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winemac: Activate an app if it sets focus on a window shortly after a hot key is...
[wine.git] / dlls / user32 / edit.c
blob3634710866e5b7f115c7ab3049a832fb9880ba42
1 /*
2 * Edit control
3 *
4 * Copyright David W. Metcalfe, 1994
5 * Copyright William Magro, 1995, 1996
6 * Copyright Frans van Dorsselaer, 1996, 1997
7 *
8 *
9 * This library is free software; you can redistribute it and/or
10 * modify it under the terms of the GNU Lesser General Public
11 * License as published by the Free Software Foundation; either
12 * version 2.1 of the License, or (at your option) any later version.
13 *
14 * This library is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
17 * Lesser General Public License for more details.
18 *
19 * You should have received a copy of the GNU Lesser General Public
20 * License along with this library; if not, write to the Free Software
21 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
22 *
23 * NOTES
24 *
25 * This code was audited for completeness against the documented features
26 * of Comctl32.dll version 6.0 on Oct. 8, 2004, by Dimitrie O. Paun.
27 *
28 * Unless otherwise noted, we believe this code to be complete, as per
29 * the specification mentioned above.
30 * If you discover missing features, or bugs, please note them below.
31 *
32 * TODO:
33 * - EDITBALLOONTIP structure
34 * - EM_GETCUEBANNER/Edit_GetCueBannerText
35 * - EM_HIDEBALLOONTIP/Edit_HideBalloonTip
36 * - EM_SETCUEBANNER/Edit_SetCueBannerText
37 * - EM_SHOWBALLOONTIP/Edit_ShowBalloonTip
38 * - EM_GETIMESTATUS, EM_SETIMESTATUS
39 * - EN_ALIGN_LTR_EC
40 * - EN_ALIGN_RTL_EC
41 * - ES_OEMCONVERT
42 *
43 */
44
45 #include "config.h"
46
47 #include <stdarg.h>
48 #include <string.h>
49 #include <stdlib.h>
50
51 #include "windef.h"
52 #include "winbase.h"
53 #include "winnt.h"
54 #include "win.h"
55 #include "imm.h"
56 #include "usp10.h"
57 #include "wine/unicode.h"
58 #include "controls.h"
59 #include "user_private.h"
60 #include "wine/debug.h"
61
62 WINE_DEFAULT_DEBUG_CHANNEL(edit);
63 WINE_DECLARE_DEBUG_CHANNEL(combo);
64 WINE_DECLARE_DEBUG_CHANNEL(relay);
65
66 #define BUFLIMIT_INITIAL 30000 /* initial buffer size */
67 #define GROWLENGTH 32 /* buffers granularity in bytes: must be power of 2 */
68 #define ROUND_TO_GROW(size) (((size) + (GROWLENGTH - 1)) & ~(GROWLENGTH - 1))
69 #define HSCROLL_FRACTION 3 /* scroll window by 1/3 width */
70
71 /*
72 * extra flags for EDITSTATE.flags field
73 */
74 #define EF_MODIFIED 0x0001 /* text has been modified */
75 #define EF_FOCUSED 0x0002 /* we have input focus */
76 #define EF_UPDATE 0x0004 /* notify parent of changed state */
77 #define EF_VSCROLL_TRACK 0x0008 /* don't SetScrollPos() since we are tracking the thumb */
78 #define EF_HSCROLL_TRACK 0x0010 /* don't SetScrollPos() since we are tracking the thumb */
79 #define EF_AFTER_WRAP 0x0080 /* the caret is displayed after the last character of a
80 wrapped line, instead of in front of the next character */
81 #define EF_USE_SOFTBRK 0x0100 /* Enable soft breaks in text. */
82 #define EF_DIALOGMODE 0x0200 /* Indicates that we are inside a dialog window */
83
84 typedef enum
85 {
86 END_0 = 0, /* line ends with terminating '\0' character */
87 END_WRAP, /* line is wrapped */
88 END_HARD, /* line ends with a hard return '\r\n' */
89 END_SOFT, /* line ends with a soft return '\r\r\n' */
90 END_RICH /* line ends with a single '\n' */
91 } LINE_END;
92
93 typedef struct tagLINEDEF {
94 INT length; /* bruto length of a line in bytes */
95 INT net_length; /* netto length of a line in visible characters */
96 LINE_END ending;
97 INT width; /* width of the line in pixels */
98 INT index; /* line index into the buffer */
99 SCRIPT_STRING_ANALYSIS ssa; /* Uniscribe Data */
100 struct tagLINEDEF *next;
101 } LINEDEF;
102
103 typedef struct
104 {
105 BOOL is_unicode; /* how the control was created */
106 LPWSTR text; /* the actual contents of the control */
107 UINT text_length; /* cached length of text buffer (in WCHARs) - use get_text_length() to retrieve */
108 UINT buffer_size; /* the size of the buffer in characters */
109 UINT buffer_limit; /* the maximum size to which the buffer may grow in characters */
110 HFONT font; /* NULL means standard system font */
111 INT x_offset; /* scroll offset for multi lines this is in pixels
112 for single lines it's in characters */
113 INT line_height; /* height of a screen line in pixels */
114 INT char_width; /* average character width in pixels */
115 DWORD style; /* sane version of wnd->dwStyle */
116 WORD flags; /* flags that are not in es->style or wnd->flags (EF_XXX) */
117 INT undo_insert_count; /* number of characters inserted in sequence */
118 UINT undo_position; /* character index of the insertion and deletion */
119 LPWSTR undo_text; /* deleted text */
120 UINT undo_buffer_size; /* size of the deleted text buffer */
121 INT selection_start; /* == selection_end if no selection */
122 INT selection_end; /* == current caret position */
123 WCHAR password_char; /* == 0 if no password char, and for multi line controls */
124 INT left_margin; /* in pixels */
125 INT right_margin; /* in pixels */
126 RECT format_rect;
127 INT text_width; /* width of the widest line in pixels for multi line controls
128 and just line width for single line controls */
129 INT region_posx; /* Position of cursor relative to region: */
130 INT region_posy; /* -1: to left, 0: within, 1: to right */
131 void *word_break_proc; /* 32-bit word break proc: ANSI or Unicode */
132 INT line_count; /* number of lines */
133 INT y_offset; /* scroll offset in number of lines */
134 BOOL bCaptureState; /* flag indicating whether mouse was captured */
135 BOOL bEnableState; /* flag keeping the enable state */
136 HWND hwndSelf; /* the our window handle */
137 HWND hwndParent; /* Handle of parent for sending EN_* messages.
138 Even if parent will change, EN_* messages
139 should be sent to the first parent. */
140 HWND hwndListBox; /* handle of ComboBox's listbox or NULL */
141 INT wheelDeltaRemainder; /* scroll wheel delta left over after scrolling whole lines */
142 /*
143 * only for multi line controls
144 */
145 INT lock_count; /* amount of re-entries in the EditWndProc */
146 INT tabs_count;
147 LPINT tabs;
148 LINEDEF *first_line_def; /* linked list of (soft) linebreaks */
149 HLOCAL hloc32W; /* our unicode local memory block */
150 HLOCAL hloc32A; /* alias for ANSI control receiving EM_GETHANDLE
151 or EM_SETHANDLE */
152 HLOCAL hlocapp; /* The text buffer handle belongs to the app */
153 /*
154 * IME Data
155 */
156 UINT composition_len; /* length of composition, 0 == no composition */
157 int composition_start; /* the character position for the composition */
158 /*
159 * Uniscribe Data
160 */
161 SCRIPT_LOGATTR *logAttr;
162 SCRIPT_STRING_ANALYSIS ssa; /* Uniscribe Data for single line controls */
163 } EDITSTATE;
164
165
166 #define SWAP_UINT32(x,y) do { UINT temp = (UINT)(x); (x) = (UINT)(y); (y) = temp; } while(0)
167 #define ORDER_UINT(x,y) do { if ((UINT)(y) < (UINT)(x)) SWAP_UINT32((x),(y)); } while(0)
168
169 /* used for disabled or read-only edit control */
170 #define EDIT_NOTIFY_PARENT(es, wNotifyCode) \
171 do \
172 { /* Notify parent which has created this edit control */ \
173 TRACE("notification " #wNotifyCode " sent to hwnd=%p\n", es->hwndParent); \
174 SendMessageW(es->hwndParent, WM_COMMAND, \
175 MAKEWPARAM(GetWindowLongPtrW((es->hwndSelf),GWLP_ID), wNotifyCode), \
176 (LPARAM)(es->hwndSelf)); \
177 } while(0)
178
179 static const WCHAR empty_stringW[] = {0};
180 static LRESULT EDIT_EM_PosFromChar(EDITSTATE *es, INT index, BOOL after_wrap);
181
182 /*********************************************************************
183 *
184 * EM_CANUNDO
185 *
186 */
187 static inline BOOL EDIT_EM_CanUndo(const EDITSTATE *es)
188 {
189 return (es->undo_insert_count || strlenW(es->undo_text));
190 }
191
192
193 /*********************************************************************
194 *
195 * EM_EMPTYUNDOBUFFER
196 *
197 */
198 static inline void EDIT_EM_EmptyUndoBuffer(EDITSTATE *es)
199 {
200 es->undo_insert_count = 0;
201 *es->undo_text = '\0';
202 }
203
204
205 /**********************************************************************
206 * get_app_version
207 *
208 * Returns the window version in case Wine emulates a later version
209 * of windows than the application expects.
210 *
211 * In a number of cases when windows runs an application that was
212 * designed for an earlier windows version, windows reverts
213 * to "old" behaviour of that earlier version.
214 *
215 * An example is a disabled edit control that needs to be painted.
216 * Old style behaviour is to send a WM_CTLCOLOREDIT message. This was
217 * changed in Win95, NT4.0 by a WM_CTLCOLORSTATIC message _only_ for
218 * applications with an expected version 0f 4.0 or higher.
219 *
220 */
221 static DWORD get_app_version(void)
222 {
223 static DWORD version;
224 if (!version)
225 {
226 DWORD dwEmulatedVersion;
227 OSVERSIONINFOW info;
228 DWORD dwProcVersion = GetProcessVersion(0);
229
230 info.dwOSVersionInfoSize = sizeof(OSVERSIONINFOW);
231 GetVersionExW( &info );
232 dwEmulatedVersion = MAKELONG( info.dwMinorVersion, info.dwMajorVersion );
233 /* FIXME: this may not be 100% correct; see discussion on the
234 * wine developer list in Nov 1999 */
235 version = dwProcVersion < dwEmulatedVersion ? dwProcVersion : dwEmulatedVersion;
236 }
237 return version;
238 }
239
240 static HBRUSH EDIT_NotifyCtlColor(EDITSTATE *es, HDC hdc)
241 {
242 HBRUSH hbrush;
243 UINT msg;
244
245 if ( get_app_version() >= 0x40000 && (!es->bEnableState || (es->style & ES_READONLY)))
246 msg = WM_CTLCOLORSTATIC;
247 else
248 msg = WM_CTLCOLOREDIT;
249
250 /* why do we notify to es->hwndParent, and we send this one to GetParent()? */
251 hbrush = (HBRUSH)SendMessageW(GetParent(es->hwndSelf), msg, (WPARAM)hdc, (LPARAM)es->hwndSelf);
252 if (!hbrush)
253 hbrush = (HBRUSH)DefWindowProcW(GetParent(es->hwndSelf), msg, (WPARAM)hdc, (LPARAM)es->hwndSelf);
254 return hbrush;
255 }
256
257
258 static inline UINT get_text_length(EDITSTATE *es)
259 {
260 if(es->text_length == (UINT)-1)
261 es->text_length = strlenW(es->text);
262 return es->text_length;
263 }
264
265
266 /*********************************************************************
267 *
268 * EDIT_WordBreakProc
269 *
270 * Find the beginning of words.
271 * Note: unlike the specs for a WordBreakProc, this function can
272 * only be called without linebreaks between s[0] up to
273 * s[count - 1]. Remember it is only called
274 * internally, so we can decide this for ourselves.
275 * Additionally we will always be breaking the full string.
276 *
277 */
278 static INT EDIT_WordBreakProc(EDITSTATE *es, LPWSTR s, INT index, INT count, INT action)
279 {
280 INT ret = 0;
281
282 TRACE("s=%p, index=%d, count=%d, action=%d\n", s, index, count, action);
283
284 if(!s) return 0;
285
286 if (!es->logAttr)
287 {
288 SCRIPT_ANALYSIS psa;
289
290 memset(&psa,0,sizeof(SCRIPT_ANALYSIS));
291 psa.eScript = SCRIPT_UNDEFINED;
292
293 es->logAttr = HeapAlloc(GetProcessHeap(), 0, sizeof(SCRIPT_LOGATTR) * get_text_length(es));
294 ScriptBreak(es->text, get_text_length(es), &psa, es->logAttr);
295 }
296
297 switch (action) {
298 case WB_LEFT:
299 if (index)
300 index--;
301 while (index && !es->logAttr[index].fSoftBreak)
302 index--;
303 ret = index;
304 break;
305 case WB_RIGHT:
306 if (!count)
307 break;
308 while (s[index] && index < count && !es->logAttr[index].fSoftBreak)
309 index++;
310 ret = index;
311 break;
312 case WB_ISDELIMITER:
313 ret = es->logAttr[index].fWhiteSpace;
314 break;
315 default:
316 ERR("unknown action code, please report !\n");
317 break;
318 }
319 return ret;
320 }
321
322
323 /*********************************************************************
324 *
325 * EDIT_CallWordBreakProc
326 *
327 * Call appropriate WordBreakProc (internal or external).
328 *
329 * Note: The "start" argument should always be an index referring
330 * to es->text. The actual wordbreak proc might be
331 * 16 bit, so we can't always pass any 32 bit LPSTR.
332 * Hence we assume that es->text is the buffer that holds
333 * the string under examination (we can decide this for ourselves).
334 *
335 */
336 static INT EDIT_CallWordBreakProc(EDITSTATE *es, INT start, INT index, INT count, INT action)
337 {
338 INT ret;
339
340 if (es->word_break_proc)
341 {
342 if(es->is_unicode)
343 {
344 EDITWORDBREAKPROCW wbpW = (EDITWORDBREAKPROCW)es->word_break_proc;
345
346 TRACE_(relay)("(UNICODE wordbrk=%p,str=%s,idx=%d,cnt=%d,act=%d)\n",
347 es->word_break_proc, debugstr_wn(es->text + start, count), index, count, action);
348 ret = wbpW(es->text + start, index, count, action);
349 }
350 else
351 {
352 EDITWORDBREAKPROCA wbpA = (EDITWORDBREAKPROCA)es->word_break_proc;
353 INT countA;
354 CHAR *textA;
355
356 countA = WideCharToMultiByte(CP_ACP, 0, es->text + start, count, NULL, 0, NULL, NULL);
357 textA = HeapAlloc(GetProcessHeap(), 0, countA);
358 WideCharToMultiByte(CP_ACP, 0, es->text + start, count, textA, countA, NULL, NULL);
359 TRACE_(relay)("(ANSI wordbrk=%p,str=%s,idx=%d,cnt=%d,act=%d)\n",
360 es->word_break_proc, debugstr_an(textA, countA), index, countA, action);
361 ret = wbpA(textA, index, countA, action);
362 HeapFree(GetProcessHeap(), 0, textA);
363 }
364 }
365 else
366 ret = EDIT_WordBreakProc(es, es->text, index+start, count+start, action) - start;
367
368 return ret;
369 }
370
371 static inline void EDIT_InvalidateUniscribeData_linedef(LINEDEF *line_def)
372 {
373 if (line_def->ssa)
374 {
375 ScriptStringFree(&line_def->ssa);
376 line_def->ssa = NULL;
377 }
378 }
379
380 static inline void EDIT_InvalidateUniscribeData(EDITSTATE *es)
381 {
382 LINEDEF *line_def = es->first_line_def;
383 while (line_def)
384 {
385 EDIT_InvalidateUniscribeData_linedef(line_def);
386 line_def = line_def->next;
387 }
388 if (es->ssa)
389 {
390 ScriptStringFree(&es->ssa);
391 es->ssa = NULL;
392 }
393 }
394
395 static SCRIPT_STRING_ANALYSIS EDIT_UpdateUniscribeData_linedef(EDITSTATE *es, HDC dc, LINEDEF *line_def)
396 {
397 if (!line_def)
398 return NULL;
399
400 if (line_def->net_length && !line_def->ssa)
401 {
402 int index = line_def->index;
403 HFONT old_font = NULL;
404 HDC udc = dc;
405 SCRIPT_TABDEF tabdef;
406 HRESULT hr;
407
408 if (!udc)
409 udc = GetDC(es->hwndSelf);
410 if (es->font)
411 old_font = SelectObject(udc, es->font);
412
413 tabdef.cTabStops = es->tabs_count;
414 tabdef.iScale = 0;
415 tabdef.pTabStops = es->tabs;
416 tabdef.iTabOrigin = 0;
417
418 hr = ScriptStringAnalyse(udc, &es->text[index], line_def->net_length,
419 (1.5*line_def->net_length+16), -1,
420 SSA_LINK|SSA_FALLBACK|SSA_GLYPHS|SSA_TAB, -1,
421 NULL, NULL, NULL, &tabdef, NULL, &line_def->ssa);
422 if (FAILED(hr))
423 {
424 WARN("ScriptStringAnalyse failed (%x)\n",hr);
425 line_def->ssa = NULL;
426 }
427
428 if (es->font)
429 SelectObject(udc, old_font);
430 if (udc != dc)
431 ReleaseDC(es->hwndSelf, udc);
432 }
433
434 return line_def->ssa;
435 }
436
437 static SCRIPT_STRING_ANALYSIS EDIT_UpdateUniscribeData(EDITSTATE *es, HDC dc, INT line)
438 {
439 LINEDEF *line_def;
440
441 if (!(es->style & ES_MULTILINE))
442 {
443 if (!es->ssa)
444 {
445 INT length = get_text_length(es);
446 HFONT old_font = NULL;
447 HDC udc = dc;
448
449 if (!udc)
450 udc = GetDC(es->hwndSelf);
451 if (es->font)
452 old_font = SelectObject(udc, es->font);
453
454 if (es->style & ES_PASSWORD)
455 ScriptStringAnalyse(udc, &es->password_char, length, (1.5*length+16), -1, SSA_LINK|SSA_FALLBACK|SSA_GLYPHS|SSA_PASSWORD, -1, NULL, NULL, NULL, NULL, NULL, &es->ssa);
456 else
457 ScriptStringAnalyse(udc, es->text, length, (1.5*length+16), -1, SSA_LINK|SSA_FALLBACK|SSA_GLYPHS, -1, NULL, NULL, NULL, NULL, NULL, &es->ssa);
458
459 if (es->font)
460 SelectObject(udc, old_font);
461 if (udc != dc)
462 ReleaseDC(es->hwndSelf, udc);
463 }
464 return es->ssa;
465 }
466 else
467 {
468 line_def = es->first_line_def;
469 while (line_def && line)
470 {
471 line_def = line_def->next;
472 line--;
473 }
474
475 return EDIT_UpdateUniscribeData_linedef(es,dc,line_def);
476 }
477 }
478
479 static inline INT get_vertical_line_count(EDITSTATE *es)
480 {
481 INT vlc = (es->format_rect.bottom - es->format_rect.top) / es->line_height;
482 return max(1,vlc);
483 }
484
485 /*********************************************************************
486 *
487 * EDIT_BuildLineDefs_ML
488 *
489 * Build linked list of text lines.
490 * Lines can end with '\0' (last line), a character (if it is wrapped),
491 * a soft return '\r\r\n' or a hard return '\r\n'
492 *
493 */
494 static void EDIT_BuildLineDefs_ML(EDITSTATE *es, INT istart, INT iend, INT delta, HRGN hrgn)
495 {
496 LPWSTR current_position, cp;
497 INT fw;
498 LINEDEF *current_line;
499 LINEDEF *previous_line;
500 LINEDEF *start_line;
501 INT line_index = 0, nstart_line = 0, nstart_index = 0;
502 INT line_count = es->line_count;
503 INT orig_net_length;
504 RECT rc;
505 INT vlc;
506
507 if (istart == iend && delta == 0)
508 return;
509
510 previous_line = NULL;
511 current_line = es->first_line_def;
512
513 /* Find starting line. istart must lie inside an existing line or
514 * at the end of buffer */
515 do {
516 if (istart < current_line->index + current_line->length ||
517 current_line->ending == END_0)
518 break;
519
520 previous_line = current_line;
521 current_line = current_line->next;
522 line_index++;
523 } while (current_line);
524
525 if (!current_line) /* Error occurred start is not inside previous buffer */
526 {
527 FIXME(" modification occurred outside buffer\n");
528 return;
529 }
530
531 /* Remember start of modifications in order to calculate update region */
532 nstart_line = line_index;
533 nstart_index = current_line->index;
534
535 /* We must start to reformat from the previous line since the modifications
536 * may have caused the line to wrap upwards. */
537 if (!(es->style & ES_AUTOHSCROLL) && line_index > 0)
538 {
539 line_index--;
540 current_line = previous_line;
541 }
542 start_line = current_line;
543
544 fw = es->format_rect.right - es->format_rect.left;
545 current_position = es->text + current_line->index;
546 vlc = get_vertical_line_count(es);
547 do {
548 if (current_line != start_line)
549 {
550 if (!current_line || current_line->index + delta > current_position - es->text)
551 {
552 /* The buffer has been expanded, create a new line and
553 insert it into the link list */
554 LINEDEF *new_line = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, sizeof(LINEDEF));
555 new_line->next = previous_line->next;
556 previous_line->next = new_line;
557 current_line = new_line;
558 es->line_count++;
559 }
560 else if (current_line->index + delta < current_position - es->text)
561 {
562 /* The previous line merged with this line so we delete this extra entry */
563 previous_line->next = current_line->next;
564 HeapFree(GetProcessHeap(), 0, current_line);
565 current_line = previous_line->next;
566 es->line_count--;
567 continue;
568 }
569 else /* current_line->index + delta == current_position */
570 {
571 if (current_position - es->text > iend)
572 break; /* We reached end of line modifications */
573 /* else recalculate this line */
574 }
575 }
576
577 current_line->index = current_position - es->text;
578 orig_net_length = current_line->net_length;
579
580 /* Find end of line */
581 cp = current_position;
582 while (*cp) {
583 if (*cp == '\n') break;
584 if ((*cp == '\r') && (*(cp + 1) == '\n'))
585 break;
586 cp++;
587 }
588
589 /* Mark type of line termination */
590 if (!(*cp)) {
591 current_line->ending = END_0;
592 current_line->net_length = strlenW(current_position);
593 } else if ((cp > current_position) && (*(cp - 1) == '\r')) {
594 current_line->ending = END_SOFT;
595 current_line->net_length = cp - current_position - 1;
596 } else if (*cp == '\n') {
597 current_line->ending = END_RICH;
598 current_line->net_length = cp - current_position;
599 } else {
600 current_line->ending = END_HARD;
601 current_line->net_length = cp - current_position;
602 }
603
604 if (current_line->net_length)
605 {
606 const SIZE *sz;
607 EDIT_InvalidateUniscribeData_linedef(current_line);
608 EDIT_UpdateUniscribeData_linedef(es, NULL, current_line);
609 if (current_line->ssa)
610 {
611 sz = ScriptString_pSize(current_line->ssa);
612 /* Calculate line width */
613 current_line->width = sz->cx;
614 }
615 else current_line->width = es->char_width * current_line->net_length;
616 }
617 else current_line->width = 0;
618
619 /* FIXME: check here for lines that are too wide even in AUTOHSCROLL (> 32767 ???) */
620
621 /* Line breaks just look back from the end and find the next break and try that. */
622
623 if (!(es->style & ES_AUTOHSCROLL)) {
624 if (current_line->width > fw && fw > es->char_width) {
625
626 INT prev, next;
627 int w;
628 const SIZE *sz;
629 float d;
630
631 prev = current_line->net_length - 1;
632 w = current_line->net_length;
633 d = (float)current_line->width/(float)fw;
634 if (d > 1.2) d -= 0.2;
635 next = prev/d;
636 if (next >= prev) next = prev-1;
637 do {
638 prev = EDIT_CallWordBreakProc(es, current_position - es->text,
639 next, current_line->net_length, WB_LEFT);
640 current_line->net_length = prev;
641 EDIT_InvalidateUniscribeData_linedef(current_line);
642 EDIT_UpdateUniscribeData_linedef(es, NULL, current_line);
643 if (current_line->ssa)
644 sz = ScriptString_pSize(current_line->ssa);
645 else sz = 0;
646 if (sz)
647 current_line->width = sz->cx;
648 else
649 prev = 0;
650 next = prev - 1;
651 } while (prev && current_line->width > fw);
652 current_line->net_length = w;
653
654 if (prev == 0) { /* Didn't find a line break so force a break */
655 INT *piDx;
656 const INT *count;
657
658 EDIT_InvalidateUniscribeData_linedef(current_line);
659 EDIT_UpdateUniscribeData_linedef(es, NULL, current_line);
660
661 if (current_line->ssa)
662 {
663 count = ScriptString_pcOutChars(current_line->ssa);
664 piDx = HeapAlloc(GetProcessHeap(),0,sizeof(INT) * (*count));
665 ScriptStringGetLogicalWidths(current_line->ssa,piDx);
666
667 prev = current_line->net_length-1;
668 do {
669 current_line->width -= piDx[prev];
670 prev--;
671 } while ( prev > 0 && current_line->width > fw);
672 if (prev<=0)
673 prev = 1;
674 HeapFree(GetProcessHeap(),0,piDx);
675 }
676 else
677 prev = (fw / es->char_width);
678 }
679
680 /* If the first line we are calculating, wrapped before istart, we must
681 * adjust istart in order for this to be reflected in the update region. */
682 if (current_line->index == nstart_index && istart > current_line->index + prev)
683 istart = current_line->index + prev;
684 /* else if we are updating the previous line before the first line we
685 * are re-calculating and it expanded */
686 else if (current_line == start_line &&
687 current_line->index != nstart_index && orig_net_length < prev)
688 {
689 /* Line expanded due to an upwards line wrap so we must partially include
690 * previous line in update region */
691 nstart_line = line_index;
692 nstart_index = current_line->index;
693 istart = current_line->index + orig_net_length;
694 }
695
696 current_line->net_length = prev;
697 current_line->ending = END_WRAP;
698
699 if (current_line->net_length > 0)
700 {
701 EDIT_UpdateUniscribeData_linedef(es, NULL, current_line);
702 if (current_line->ssa)
703 {
704 sz = ScriptString_pSize(current_line->ssa);
705 current_line->width = sz->cx;
706 }
707 else
708 current_line->width = 0;
709 }
710 else current_line->width = 0;
711 }
712 else if (current_line == start_line &&
713 current_line->index != nstart_index &&
714 orig_net_length < current_line->net_length) {
715 /* The previous line expanded but it's still not as wide as the client rect */
716 /* The expansion is due to an upwards line wrap so we must partially include
717 it in the update region */
718 nstart_line = line_index;
719 nstart_index = current_line->index;
720 istart = current_line->index + orig_net_length;
721 }
722 }
723
724
725 /* Adjust length to include line termination */
726 switch (current_line->ending) {
727 case END_SOFT:
728 current_line->length = current_line->net_length + 3;
729 break;
730 case END_RICH:
731 current_line->length = current_line->net_length + 1;
732 break;
733 case END_HARD:
734 current_line->length = current_line->net_length + 2;
735 break;
736 case END_WRAP:
737 case END_0:
738 current_line->length = current_line->net_length;
739 break;
740 }
741 es->text_width = max(es->text_width, current_line->width);
742 current_position += current_line->length;
743 previous_line = current_line;
744
745 /* Discard data for non-visible lines. It will be calculated as needed */
746 if ((line_index < es->y_offset) || (line_index > es->y_offset + vlc))
747 EDIT_InvalidateUniscribeData_linedef(current_line);
748
749 current_line = current_line->next;
750 line_index++;
751 } while (previous_line->ending != END_0);
752
753 /* Finish adjusting line indexes by delta or remove hanging lines */
754 if (previous_line->ending == END_0)
755 {
756 LINEDEF *pnext = NULL;
757
758 previous_line->next = NULL;
759 while (current_line)
760 {
761 pnext = current_line->next;
762 EDIT_InvalidateUniscribeData_linedef(current_line);
763 HeapFree(GetProcessHeap(), 0, current_line);
764 current_line = pnext;
765 es->line_count--;
766 }
767 }
768 else if (delta != 0)
769 {
770 while (current_line)
771 {
772 current_line->index += delta;
773 current_line = current_line->next;
774 }
775 }
776
777 /* Calculate rest of modification rectangle */
778 if (hrgn)
779 {
780 HRGN tmphrgn;
781 /*
782 * We calculate two rectangles. One for the first line which may have
783 * an indent with respect to the format rect. The other is a format-width
784 * rectangle that spans the rest of the lines that changed or moved.
785 */
786 rc.top = es->format_rect.top + nstart_line * es->line_height -
787 (es->y_offset * es->line_height); /* Adjust for vertical scrollbar */
788 rc.bottom = rc.top + es->line_height;
789 if ((es->style & ES_CENTER) || (es->style & ES_RIGHT))
790 rc.left = es->format_rect.left;
791 else
792 rc.left = LOWORD(EDIT_EM_PosFromChar(es, nstart_index, FALSE));
793 rc.right = es->format_rect.right;
794 SetRectRgn(hrgn, rc.left, rc.top, rc.right, rc.bottom);
795
796 rc.top = rc.bottom;
797 rc.left = es->format_rect.left;
798 rc.right = es->format_rect.right;
799 /*
800 * If lines were added or removed we must re-paint the remainder of the
801 * lines since the remaining lines were either shifted up or down.
802 */
803 if (line_count < es->line_count) /* We added lines */
804 rc.bottom = es->line_count * es->line_height;
805 else if (line_count > es->line_count) /* We removed lines */
806 rc.bottom = line_count * es->line_height;
807 else
808 rc.bottom = line_index * es->line_height;
809 rc.bottom += es->format_rect.top;
810 rc.bottom -= (es->y_offset * es->line_height); /* Adjust for vertical scrollbar */
811 tmphrgn = CreateRectRgn(rc.left, rc.top, rc.right, rc.bottom);
812 CombineRgn(hrgn, hrgn, tmphrgn, RGN_OR);
813 DeleteObject(tmphrgn);
814 }
815 }
816
817 /*********************************************************************
818 *
819 * EDIT_CalcLineWidth_SL
820 *
821 */
822 static void EDIT_CalcLineWidth_SL(EDITSTATE *es)
823 {
824 EDIT_UpdateUniscribeData(es, NULL, 0);
825 if (es->ssa)
826 {
827 const SIZE *size;
828 size = ScriptString_pSize(es->ssa);
829 es->text_width = size->cx;
830 }
831 else
832 es->text_width = 0;
833 }
834
835 /*********************************************************************
836 *
837 * EDIT_CharFromPos
838 *
839 * Beware: This is not the function called on EM_CHARFROMPOS
840 * The position _can_ be outside the formatting / client
841 * rectangle
842 * The return value is only the character index
843 *
844 */
845 static INT EDIT_CharFromPos(EDITSTATE *es, INT x, INT y, LPBOOL after_wrap)
846 {
847 INT index;
848
849 if (es->style & ES_MULTILINE) {
850 int trailing;
851 INT line = (y - es->format_rect.top) / es->line_height + es->y_offset;
852 INT line_index = 0;
853 LINEDEF *line_def = es->first_line_def;
854 EDIT_UpdateUniscribeData(es, NULL, line);
855 while ((line > 0) && line_def->next) {
856 line_index += line_def->length;
857 line_def = line_def->next;
858 line--;
859 }
860
861 x += es->x_offset - es->format_rect.left;
862 if (es->style & ES_RIGHT)
863 x -= (es->format_rect.right - es->format_rect.left) - line_def->width;
864 else if (es->style & ES_CENTER)
865 x -= ((es->format_rect.right - es->format_rect.left) - line_def->width) / 2;
866 if (x >= line_def->width) {
867 if (after_wrap)
868 *after_wrap = (line_def->ending == END_WRAP);
869 return line_index + line_def->net_length;
870 }
871 if (x <= 0 || !line_def->ssa) {
872 if (after_wrap)
873 *after_wrap = FALSE;
874 return line_index;
875 }
876
877 ScriptStringXtoCP(line_def->ssa, x , &index, &trailing);
878 if (trailing) index++;
879 index += line_index;
880 if (after_wrap)
881 *after_wrap = ((index == line_index + line_def->net_length) &&
882 (line_def->ending == END_WRAP));
883 } else {
884 INT xoff = 0;
885 INT trailing;
886 if (after_wrap)
887 *after_wrap = FALSE;
888 x -= es->format_rect.left;
889 if (!x)
890 return es->x_offset;
891
892 if (!es->x_offset)
893 {
894 INT indent = (es->format_rect.right - es->format_rect.left) - es->text_width;
895 if (es->style & ES_RIGHT)
896 x -= indent;
897 else if (es->style & ES_CENTER)
898 x -= indent / 2;
899 }
900
901 EDIT_UpdateUniscribeData(es, NULL, 0);
902 if (es->x_offset)
903 {
904 if (es->ssa)
905 {
906 if (es->x_offset>= get_text_length(es))
907 {
908 const SIZE *size;
909 size = ScriptString_pSize(es->ssa);
910 xoff = size->cx;
911 }
912 ScriptStringCPtoX(es->ssa, es->x_offset, FALSE, &xoff);
913 }
914 else
915 xoff = 0;
916 }
917 if (x < 0)
918 {
919 if (x + xoff > 0 || !es->ssa)
920 {
921 ScriptStringXtoCP(es->ssa, x+xoff, &index, &trailing);
922 if (trailing) index++;
923 }
924 else
925 index = 0;
926 }
927 else
928 {
929 if (x)
930 {
931 const SIZE *size = NULL;
932 if (es->ssa)
933 size = ScriptString_pSize(es->ssa);
934 if (!size)
935 index = 0;
936 else if (x > size->cx)
937 index = get_text_length(es);
938 else if (es->ssa)
939 {
940 ScriptStringXtoCP(es->ssa, x+xoff, &index, &trailing);
941 if (trailing) index++;
942 }
943 else
944 index = 0;
945 }
946 else
947 index = es->x_offset;
948 }
949 }
950 return index;
951 }
952
953
954 /*********************************************************************
955 *
956 * EDIT_ConfinePoint
957 *
958 * adjusts the point to be within the formatting rectangle
959 * (so CharFromPos returns the nearest _visible_ character)
960 *
961 */
962 static void EDIT_ConfinePoint(const EDITSTATE *es, LPINT x, LPINT y)
963 {
964 *x = min(max(*x, es->format_rect.left), es->format_rect.right - 1);
965 *y = min(max(*y, es->format_rect.top), es->format_rect.bottom - 1);
966 }
967
968
969 /*********************************************************************
970 *
971 * EM_LINEFROMCHAR
972 *
973 */
974 static INT EDIT_EM_LineFromChar(EDITSTATE *es, INT index)
975 {
976 INT line;
977 LINEDEF *line_def;
978
979 if (!(es->style & ES_MULTILINE))
980 return 0;
981 if (index > (INT)get_text_length(es))
982 return es->line_count - 1;
983 if (index == -1)
984 index = min(es->selection_start, es->selection_end);
985
986 line = 0;
987 line_def = es->first_line_def;
988 index -= line_def->length;
989 while ((index >= 0) && line_def->next) {
990 line++;
991 line_def = line_def->next;
992 index -= line_def->length;
993 }
994 return line;
995 }
996
997
998 /*********************************************************************
999 *
1000 * EM_LINEINDEX
1001 *
1002 */
1003 static INT EDIT_EM_LineIndex(const EDITSTATE *es, INT line)
1004 {
1005 INT line_index;
1006 const LINEDEF *line_def;
1007
1008 if (!(es->style & ES_MULTILINE))
1009 return 0;
1010 if (line >= es->line_count)
1011 return -1;
1012
1013 line_index = 0;
1014 line_def = es->first_line_def;
1015 if (line == -1) {
1016 INT index = es->selection_end - line_def->length;
1017 while ((index >= 0) && line_def->next) {
1018 line_index += line_def->length;
1019 line_def = line_def->next;
1020 index -= line_def->length;
1021 }
1022 } else {
1023 while (line > 0) {
1024 line_index += line_def->length;
1025 line_def = line_def->next;
1026 line--;
1027 }
1028 }
1029 return line_index;
1030 }
1031
1032
1033 /*********************************************************************
1034 *
1035 * EM_LINELENGTH
1036 *
1037 */
1038 static INT EDIT_EM_LineLength(EDITSTATE *es, INT index)
1039 {
1040 LINEDEF *line_def;
1041
1042 if (!(es->style & ES_MULTILINE))
1043 return get_text_length(es);
1044
1045 if (index == -1) {
1046 /* get the number of remaining non-selected chars of selected lines */
1047 INT32 l; /* line number */
1048 INT32 li; /* index of first char in line */
1049 INT32 count;
1050 l = EDIT_EM_LineFromChar(es, es->selection_start);
1051 /* # chars before start of selection area */
1052 count = es->selection_start - EDIT_EM_LineIndex(es, l);
1053 l = EDIT_EM_LineFromChar(es, es->selection_end);
1054 /* # chars after end of selection */
1055 li = EDIT_EM_LineIndex(es, l);
1056 count += li + EDIT_EM_LineLength(es, li) - es->selection_end;
1057 return count;
1058 }
1059 line_def = es->first_line_def;
1060 index -= line_def->length;
1061 while ((index >= 0) && line_def->next) {
1062 line_def = line_def->next;
1063 index -= line_def->length;
1064 }
1065 return line_def->net_length;
1066 }
1067
1068
1069 /*********************************************************************
1070 *
1071 * EM_POSFROMCHAR
1072 *
1073 */
1074 static LRESULT EDIT_EM_PosFromChar(EDITSTATE *es, INT index, BOOL after_wrap)
1075 {
1076 INT len = get_text_length(es);
1077 INT l;
1078 INT li;
1079 INT x = 0;
1080 INT y = 0;
1081 INT w;
1082 INT lw = 0;
1083 LINEDEF *line_def;
1084
1085 index = min(index, len);
1086 if (es->style & ES_MULTILINE) {
1087 l = EDIT_EM_LineFromChar(es, index);
1088 EDIT_UpdateUniscribeData(es, NULL, l);
1089
1090 y = (l - es->y_offset) * es->line_height;
1091 li = EDIT_EM_LineIndex(es, l);
1092 if (after_wrap && (li == index) && l) {
1093 INT l2 = l - 1;
1094 line_def = es->first_line_def;
1095 while (l2) {
1096 line_def = line_def->next;
1097 l2--;
1098 }
1099 if (line_def->ending == END_WRAP) {
1100 l--;
1101 y -= es->line_height;
1102 li = EDIT_EM_LineIndex(es, l);
1103 }
1104 }
1105
1106 line_def = es->first_line_def;
1107 while (line_def->index != li)
1108 line_def = line_def->next;
1109
1110 lw = line_def->width;
1111 w = es->format_rect.right - es->format_rect.left;
1112 if (line_def->ssa)
1113 {
1114 ScriptStringCPtoX(line_def->ssa, (index - 1) - li, TRUE, &x);
1115 x -= es->x_offset;
1116 }
1117 else
1118 x = es->x_offset;
1119
1120 if (es->style & ES_RIGHT)
1121 x = w - (lw - x);
1122 else if (es->style & ES_CENTER)
1123 x += (w - lw) / 2;
1124 } else {
1125 INT xoff = 0;
1126 INT xi = 0;
1127 EDIT_UpdateUniscribeData(es, NULL, 0);
1128 if (es->x_offset)
1129 {
1130 if (es->ssa)
1131 {
1132 if (es->x_offset >= get_text_length(es))
1133 {
1134 int leftover = es->x_offset - get_text_length(es);
1135 if (es->ssa)
1136 {
1137 const SIZE *size;
1138 size = ScriptString_pSize(es->ssa);
1139 xoff = size->cx;
1140 }
1141 else
1142 xoff = 0;
1143 xoff += es->char_width * leftover;
1144 }
1145 else
1146 ScriptStringCPtoX(es->ssa, es->x_offset, FALSE, &xoff);
1147 }
1148 else
1149 xoff = 0;
1150 }
1151 if (index)
1152 {
1153 if (index >= get_text_length(es))
1154 {
1155 if (es->ssa)
1156 {
1157 const SIZE *size;
1158 size = ScriptString_pSize(es->ssa);
1159 xi = size->cx;
1160 }
1161 else
1162 xi = 0;
1163 }
1164 else if (es->ssa)
1165 ScriptStringCPtoX(es->ssa, index, FALSE, &xi);
1166 else
1167 xi = 0;
1168 }
1169 x = xi - xoff;
1170
1171 if (index >= es->x_offset) {
1172 if (!es->x_offset && (es->style & (ES_RIGHT | ES_CENTER)))
1173 {
1174 w = es->format_rect.right - es->format_rect.left;
1175 if (w > es->text_width)
1176 {
1177 if (es->style & ES_RIGHT)
1178 x += w - es->text_width;
1179 else if (es->style & ES_CENTER)
1180 x += (w - es->text_width) / 2;
1181 }
1182 }
1183 }
1184 y = 0;
1185 }
1186 x += es->format_rect.left;
1187 y += es->format_rect.top;
1188 return MAKELONG((INT16)x, (INT16)y);
1189 }
1190
1191
1192 /*********************************************************************
1193 *
1194 * EDIT_GetLineRect
1195 *
1196 * Calculates the bounding rectangle for a line from a starting
1197 * column to an ending column.
1198 *
1199 */
1200 static void EDIT_GetLineRect(EDITSTATE *es, INT line, INT scol, INT ecol, LPRECT rc)
1201 {
1202 SCRIPT_STRING_ANALYSIS ssa;
1203 INT line_index = 0;
1204 INT pt1, pt2, pt3;
1205
1206 if (es->style & ES_MULTILINE)
1207 {
1208 const LINEDEF *line_def = NULL;
1209 rc->top = es->format_rect.top + (line - es->y_offset) * es->line_height;
1210 if (line >= es->line_count)
1211 return;
1212
1213 line_def = es->first_line_def;
1214 if (line == -1) {
1215 INT index = es->selection_end - line_def->length;
1216 while ((index >= 0) && line_def->next) {
1217 line_index += line_def->length;
1218 line_def = line_def->next;
1219 index -= line_def->length;
1220 }
1221 } else {
1222 while (line > 0) {
1223 line_index += line_def->length;
1224 line_def = line_def->next;
1225 line--;
1226 }
1227 }
1228 ssa = line_def->ssa;
1229 }
1230 else
1231 {
1232 line_index = 0;
1233 rc->top = es->format_rect.top;
1234 ssa = es->ssa;
1235 }
1236
1237 rc->bottom = rc->top + es->line_height;
1238 pt1 = (scol == 0) ? es->format_rect.left : (short)LOWORD(EDIT_EM_PosFromChar(es, line_index + scol, TRUE));
1239 pt2 = (ecol == -1) ? es->format_rect.right : (short)LOWORD(EDIT_EM_PosFromChar(es, line_index + ecol, TRUE));
1240 if (ssa)
1241 {
1242 ScriptStringCPtoX(ssa, scol, FALSE, &pt3);
1243 pt3+=es->format_rect.left;
1244 }
1245 else pt3 = pt1;
1246 rc->right = max(max(pt1 , pt2),pt3);
1247 rc->left = min(min(pt1, pt2),pt3);
1248 }
1249
1250
1251 static inline void text_buffer_changed(EDITSTATE *es)
1252 {
1253 es->text_length = (UINT)-1;
1254
1255 HeapFree( GetProcessHeap(), 0, es->logAttr );
1256 es->logAttr = NULL;
1257 EDIT_InvalidateUniscribeData(es);
1258 }
1259
1260 /*********************************************************************
1261 * EDIT_LockBuffer
1262 *
1263 */
1264 static void EDIT_LockBuffer(EDITSTATE *es)
1265 {
1266 if (es->hlocapp) return;
1267
1268 if (!es->text) {
1269
1270 if(!es->hloc32W) return;
1271
1272 if(es->hloc32A)
1273 {
1274 CHAR *textA = LocalLock(es->hloc32A);
1275 HLOCAL hloc32W_new;
1276 UINT countW_new = MultiByteToWideChar(CP_ACP, 0, textA, -1, NULL, 0);
1277 if(countW_new > es->buffer_size + 1)
1278 {
1279 UINT alloc_size = ROUND_TO_GROW(countW_new * sizeof(WCHAR));
1280 TRACE("Resizing 32-bit UNICODE buffer from %d+1 to %d WCHARs\n", es->buffer_size, countW_new);
1281 hloc32W_new = LocalReAlloc(es->hloc32W, alloc_size, LMEM_MOVEABLE | LMEM_ZEROINIT);
1282 if(hloc32W_new)
1283 {
1284 es->hloc32W = hloc32W_new;
1285 es->buffer_size = LocalSize(hloc32W_new)/sizeof(WCHAR) - 1;
1286 TRACE("Real new size %d+1 WCHARs\n", es->buffer_size);
1287 }
1288 else
1289 WARN("FAILED! Will synchronize partially\n");
1290 }
1291 es->text = LocalLock(es->hloc32W);
1292 MultiByteToWideChar(CP_ACP, 0, textA, -1, es->text, es->buffer_size + 1);
1293 LocalUnlock(es->hloc32A);
1294 }
1295 else es->text = LocalLock(es->hloc32W);
1296 }
1297 es->lock_count++;
1298 }
1299
1300
1301 /*********************************************************************
1302 *
1303 * EDIT_UnlockBuffer
1304 *
1305 */
1306 static void EDIT_UnlockBuffer(EDITSTATE *es, BOOL force)
1307 {
1308 if (es->hlocapp) return;
1309
1310 /* Edit window might be already destroyed */
1311 if(!IsWindow(es->hwndSelf))
1312 {
1313 WARN("edit hwnd %p already destroyed\n", es->hwndSelf);
1314 return;
1315 }
1316
1317 if (!es->lock_count) {
1318 ERR("lock_count == 0 ... please report\n");
1319 return;
1320 }
1321 if (!es->text) {
1322 ERR("es->text == 0 ... please report\n");
1323 return;
1324 }
1325
1326 if (force || (es->lock_count == 1)) {
1327 if (es->hloc32W) {
1328 UINT countA = 0;
1329 UINT countW = get_text_length(es) + 1;
1330
1331 if(es->hloc32A)
1332 {
1333 UINT countA_new = WideCharToMultiByte(CP_ACP, 0, es->text, countW, NULL, 0, NULL, NULL);
1334 TRACE("Synchronizing with 32-bit ANSI buffer\n");
1335 TRACE("%d WCHARs translated to %d bytes\n", countW, countA_new);
1336 countA = LocalSize(es->hloc32A);
1337 if(countA_new > countA)
1338 {
1339 HLOCAL hloc32A_new;
1340 UINT alloc_size = ROUND_TO_GROW(countA_new);
1341 TRACE("Resizing 32-bit ANSI buffer from %d to %d bytes\n", countA, alloc_size);
1342 hloc32A_new = LocalReAlloc(es->hloc32A, alloc_size, LMEM_MOVEABLE | LMEM_ZEROINIT);
1343 if(hloc32A_new)
1344 {
1345 es->hloc32A = hloc32A_new;
1346 countA = LocalSize(hloc32A_new);
1347 TRACE("Real new size %d bytes\n", countA);
1348 }
1349 else
1350 WARN("FAILED! Will synchronize partially\n");
1351 }
1352 WideCharToMultiByte(CP_ACP, 0, es->text, countW,
1353 LocalLock(es->hloc32A), countA, NULL, NULL);
1354 LocalUnlock(es->hloc32A);
1355 }
1356
1357 LocalUnlock(es->hloc32W);
1358 es->text = NULL;
1359 }
1360 else {
1361 ERR("no buffer ... please report\n");
1362 return;
1363 }
1364 }
1365 es->lock_count--;
1366 }
1367
1368
1369 /*********************************************************************
1370 *
1371 * EDIT_MakeFit
1372 *
1373 * Try to fit size + 1 characters in the buffer.
1374 */
1375 static BOOL EDIT_MakeFit(EDITSTATE *es, UINT size)
1376 {
1377 HLOCAL hNew32W;
1378
1379 if (size <= es->buffer_size)
1380 return TRUE;
1381
1382 TRACE("trying to ReAlloc to %d+1 characters\n", size);
1383
1384 /* Force edit to unlock it's buffer. es->text now NULL */
1385 EDIT_UnlockBuffer(es, TRUE);
1386
1387 if (es->hloc32W) {
1388 UINT alloc_size = ROUND_TO_GROW((size + 1) * sizeof(WCHAR));
1389 if ((hNew32W = LocalReAlloc(es->hloc32W, alloc_size, LMEM_MOVEABLE | LMEM_ZEROINIT))) {
1390 TRACE("Old 32 bit handle %p, new handle %p\n", es->hloc32W, hNew32W);
1391 es->hloc32W = hNew32W;
1392 es->buffer_size = LocalSize(hNew32W)/sizeof(WCHAR) - 1;
1393 }
1394 }
1395
1396 EDIT_LockBuffer(es);
1397
1398 if (es->buffer_size < size) {
1399 WARN("FAILED ! We now have %d+1\n", es->buffer_size);
1400 EDIT_NOTIFY_PARENT(es, EN_ERRSPACE);
1401 return FALSE;
1402 } else {
1403 TRACE("We now have %d+1\n", es->buffer_size);
1404 return TRUE;
1405 }
1406 }
1407
1408
1409 /*********************************************************************
1410 *
1411 * EDIT_MakeUndoFit
1412 *
1413 * Try to fit size + 1 bytes in the undo buffer.
1414 *
1415 */
1416 static BOOL EDIT_MakeUndoFit(EDITSTATE *es, UINT size)
1417 {
1418 UINT alloc_size;
1419
1420 if (size <= es->undo_buffer_size)
1421 return TRUE;
1422
1423 TRACE("trying to ReAlloc to %d+1\n", size);
1424
1425 alloc_size = ROUND_TO_GROW((size + 1) * sizeof(WCHAR));
1426 if ((es->undo_text = HeapReAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, es->undo_text, alloc_size))) {
1427 es->undo_buffer_size = alloc_size/sizeof(WCHAR) - 1;
1428 return TRUE;
1429 }
1430 else
1431 {
1432 WARN("FAILED ! We now have %d+1\n", es->undo_buffer_size);
1433 return FALSE;
1434 }
1435 }
1436
1437
1438 /*********************************************************************
1439 *
1440 * EDIT_UpdateTextRegion
1441 *
1442 */
1443 static void EDIT_UpdateTextRegion(EDITSTATE *es, HRGN hrgn, BOOL bErase)
1444 {
1445 if (es->flags & EF_UPDATE) {
1446 es->flags &= ~EF_UPDATE;
1447 EDIT_NOTIFY_PARENT(es, EN_UPDATE);
1448 }
1449 InvalidateRgn(es->hwndSelf, hrgn, bErase);
1450 }
1451
1452
1453 /*********************************************************************
1454 *
1455 * EDIT_UpdateText
1456 *
1457 */
1458 static void EDIT_UpdateText(EDITSTATE *es, const RECT *rc, BOOL bErase)
1459 {
1460 if (es->flags & EF_UPDATE) {
1461 es->flags &= ~EF_UPDATE;
1462 EDIT_NOTIFY_PARENT(es, EN_UPDATE);
1463 }
1464 InvalidateRect(es->hwndSelf, rc, bErase);
1465 }
1466
1467 /*********************************************************************
1468 *
1469 * EDIT_SL_InvalidateText
1470 *
1471 * Called from EDIT_InvalidateText().
1472 * Does the job for single-line controls only.
1473 *
1474 */
1475 static void EDIT_SL_InvalidateText(EDITSTATE *es, INT start, INT end)
1476 {
1477 RECT line_rect;
1478 RECT rc;
1479
1480 EDIT_GetLineRect(es, 0, start, end, &line_rect);
1481 if (IntersectRect(&rc, &line_rect, &es->format_rect))
1482 EDIT_UpdateText(es, &rc, TRUE);
1483 }
1484
1485 /*********************************************************************
1486 *
1487 * EDIT_ML_InvalidateText
1488 *
1489 * Called from EDIT_InvalidateText().
1490 * Does the job for multi-line controls only.
1491 *
1492 */
1493 static void EDIT_ML_InvalidateText(EDITSTATE *es, INT start, INT end)
1494 {
1495 INT vlc = get_vertical_line_count(es);
1496 INT sl = EDIT_EM_LineFromChar(es, start);
1497 INT el = EDIT_EM_LineFromChar(es, end);
1498 INT sc;
1499 INT ec;
1500 RECT rc1;
1501 RECT rcWnd;
1502 RECT rcLine;
1503 RECT rcUpdate;
1504 INT l;
1505
1506 if ((el < es->y_offset) || (sl > es->y_offset + vlc))
1507 return;
1508
1509 sc = start - EDIT_EM_LineIndex(es, sl);
1510 ec = end - EDIT_EM_LineIndex(es, el);
1511 if (sl < es->y_offset) {
1512 sl = es->y_offset;
1513 sc = 0;
1514 }
1515 if (el > es->y_offset + vlc) {
1516 el = es->y_offset + vlc;
1517 ec = EDIT_EM_LineLength(es, EDIT_EM_LineIndex(es, el));
1518 }
1519 GetClientRect(es->hwndSelf, &rc1);
1520 IntersectRect(&rcWnd, &rc1, &es->format_rect);
1521 if (sl == el) {
1522 EDIT_GetLineRect(es, sl, sc, ec, &rcLine);
1523 if (IntersectRect(&rcUpdate, &rcWnd, &rcLine))
1524 EDIT_UpdateText(es, &rcUpdate, TRUE);
1525 } else {
1526 EDIT_GetLineRect(es, sl, sc,
1527 EDIT_EM_LineLength(es,
1528 EDIT_EM_LineIndex(es, sl)),
1529 &rcLine);
1530 if (IntersectRect(&rcUpdate, &rcWnd, &rcLine))
1531 EDIT_UpdateText(es, &rcUpdate, TRUE);
1532 for (l = sl + 1 ; l < el ; l++) {
1533 EDIT_GetLineRect(es, l, 0,
1534 EDIT_EM_LineLength(es,
1535 EDIT_EM_LineIndex(es, l)),
1536 &rcLine);
1537 if (IntersectRect(&rcUpdate, &rcWnd, &rcLine))
1538 EDIT_UpdateText(es, &rcUpdate, TRUE);
1539 }
1540 EDIT_GetLineRect(es, el, 0, ec, &rcLine);
1541 if (IntersectRect(&rcUpdate, &rcWnd, &rcLine))
1542 EDIT_UpdateText(es, &rcUpdate, TRUE);
1543 }
1544 }
1545
1546
1547 /*********************************************************************
1548 *
1549 * EDIT_InvalidateText
1550 *
1551 * Invalidate the text from offset start up to, but not including,
1552 * offset end. Useful for (re)painting the selection.
1553 * Regions outside the linewidth are not invalidated.
1554 * end == -1 means end == TextLength.
1555 * start and end need not be ordered.
1556 *
1557 */
1558 static void EDIT_InvalidateText(EDITSTATE *es, INT start, INT end)
1559 {
1560 if (end == start)
1561 return;
1562
1563 if (end == -1)
1564 end = get_text_length(es);
1565
1566 if (end < start) {
1567 INT tmp = start;
1568 start = end;
1569 end = tmp;
1570 }
1571
1572 if (es->style & ES_MULTILINE)
1573 EDIT_ML_InvalidateText(es, start, end);
1574 else
1575 EDIT_SL_InvalidateText(es, start, end);
1576 }
1577
1578
1579 /*********************************************************************
1580 *
1581 * EDIT_EM_SetSel
1582 *
1583 * note: unlike the specs say: the order of start and end
1584 * _is_ preserved in Windows. (i.e. start can be > end)
1585 * In other words: this handler is OK
1586 *
1587 */
1588 static void EDIT_EM_SetSel(EDITSTATE *es, UINT start, UINT end, BOOL after_wrap)
1589 {
1590 UINT old_start = es->selection_start;
1591 UINT old_end = es->selection_end;
1592 UINT len = get_text_length(es);
1593
1594 if (start == (UINT)-1) {
1595 start = es->selection_end;
1596 end = es->selection_end;
1597 } else {
1598 start = min(start, len);
1599 end = min(end, len);
1600 }
1601 es->selection_start = start;
1602 es->selection_end = end;
1603 if (after_wrap)
1604 es->flags |= EF_AFTER_WRAP;
1605 else
1606 es->flags &= ~EF_AFTER_WRAP;
1607 /* Compute the necessary invalidation region. */
1608 /* Note that we don't need to invalidate regions which have
1609 * "never" been selected, or those which are "still" selected.
1610 * In fact, every time we hit a selection boundary, we can
1611 * *toggle* whether we need to invalidate. Thus we can optimize by
1612 * *sorting* the interval endpoints. Let's assume that we sort them
1613 * in this order:
1614 * start <= end <= old_start <= old_end
1615 * Knuth 5.3.1 (p 183) assures us that this can be done optimally
1616 * in 5 comparisons; i.e. it is impossible to do better than the
1617 * following: */
1618 ORDER_UINT(end, old_end);
1619 ORDER_UINT(start, old_start);
1620 ORDER_UINT(old_start, old_end);
1621 ORDER_UINT(start, end);
1622 /* Note that at this point 'end' and 'old_start' are not in order, but
1623 * start is definitely the min. and old_end is definitely the max. */
1624 if (end != old_start)
1625 {
1626 /*
1627 * One can also do
1628 * ORDER_UINT32(end, old_start);
1629 * EDIT_InvalidateText(es, start, end);
1630 * EDIT_InvalidateText(es, old_start, old_end);
1631 * in place of the following if statement.
1632 * (That would complete the optimal five-comparison four-element sort.)
1633 */
1634 if (old_start > end )
1635 {
1636 EDIT_InvalidateText(es, start, end);
1637 EDIT_InvalidateText(es, old_start, old_end);
1638 }
1639 else
1640 {
1641 EDIT_InvalidateText(es, start, old_start);
1642 EDIT_InvalidateText(es, end, old_end);
1643 }
1644 }
1645 else EDIT_InvalidateText(es, start, old_end);
1646 }
1647
1648
1649 /*********************************************************************
1650 *
1651 * EDIT_UpdateScrollInfo
1652 *
1653 */
1654 static void EDIT_UpdateScrollInfo(EDITSTATE *es)
1655 {
1656 if ((es->style & WS_VSCROLL) && !(es->flags & EF_VSCROLL_TRACK))
1657 {
1658 SCROLLINFO si;
1659 si.cbSize = sizeof(SCROLLINFO);
1660 si.fMask = SIF_PAGE | SIF_POS | SIF_RANGE | SIF_DISABLENOSCROLL;
1661 si.nMin = 0;
1662 si.nMax = es->line_count - 1;
1663 si.nPage = (es->format_rect.bottom - es->format_rect.top) / es->line_height;
1664 si.nPos = es->y_offset;
1665 TRACE("SB_VERT, nMin=%d, nMax=%d, nPage=%d, nPos=%d\n",
1666 si.nMin, si.nMax, si.nPage, si.nPos);
1667 SetScrollInfo(es->hwndSelf, SB_VERT, &si, TRUE);
1668 }
1669
1670 if ((es->style & WS_HSCROLL) && !(es->flags & EF_HSCROLL_TRACK))
1671 {
1672 SCROLLINFO si;
1673 si.cbSize = sizeof(SCROLLINFO);
1674 si.fMask = SIF_PAGE | SIF_POS | SIF_RANGE | SIF_DISABLENOSCROLL;
1675 si.nMin = 0;
1676 si.nMax = es->text_width - 1;
1677 si.nPage = es->format_rect.right - es->format_rect.left;
1678 si.nPos = es->x_offset;
1679 TRACE("SB_HORZ, nMin=%d, nMax=%d, nPage=%d, nPos=%d\n",
1680 si.nMin, si.nMax, si.nPage, si.nPos);
1681 SetScrollInfo(es->hwndSelf, SB_HORZ, &si, TRUE);
1682 }
1683 }
1684
1685
1686 /*********************************************************************
1687 *
1688 * EDIT_EM_LineScroll_internal
1689 *
1690 * Version of EDIT_EM_LineScroll for internal use.
1691 * It doesn't refuse if ES_MULTILINE is set and assumes that
1692 * dx is in pixels, dy - in lines.
1693 *
1694 */
1695 static BOOL EDIT_EM_LineScroll_internal(EDITSTATE *es, INT dx, INT dy)
1696 {
1697 INT nyoff;
1698 INT x_offset_in_pixels;
1699 INT lines_per_page = (es->format_rect.bottom - es->format_rect.top) /
1700 es->line_height;
1701
1702 if (es->style & ES_MULTILINE)
1703 {
1704 x_offset_in_pixels = es->x_offset;
1705 }
1706 else
1707 {
1708 dy = 0;
1709 x_offset_in_pixels = (short)LOWORD(EDIT_EM_PosFromChar(es, es->x_offset, FALSE));
1710 }
1711
1712 if (-dx > x_offset_in_pixels)
1713 dx = -x_offset_in_pixels;
1714 if (dx > es->text_width - x_offset_in_pixels)
1715 dx = es->text_width - x_offset_in_pixels;
1716 nyoff = max(0, es->y_offset + dy);
1717 if (nyoff >= es->line_count - lines_per_page)
1718 nyoff = max(0, es->line_count - lines_per_page);
1719 dy = (es->y_offset - nyoff) * es->line_height;
1720 if (dx || dy) {
1721 RECT rc1;
1722 RECT rc;
1723
1724 es->y_offset = nyoff;
1725 if(es->style & ES_MULTILINE)
1726 es->x_offset += dx;
1727 else
1728 es->x_offset += dx / es->char_width;
1729
1730 GetClientRect(es->hwndSelf, &rc1);
1731 IntersectRect(&rc, &rc1, &es->format_rect);
1732 ScrollWindowEx(es->hwndSelf, -dx, dy,
1733 NULL, &rc, NULL, NULL, SW_INVALIDATE);
1734 /* force scroll info update */
1735 EDIT_UpdateScrollInfo(es);
1736 }
1737 if (dx && !(es->flags & EF_HSCROLL_TRACK))
1738 EDIT_NOTIFY_PARENT(es, EN_HSCROLL);
1739 if (dy && !(es->flags & EF_VSCROLL_TRACK))
1740 EDIT_NOTIFY_PARENT(es, EN_VSCROLL);
1741 return TRUE;
1742 }
1743
1744 /*********************************************************************
1745 *
1746 * EM_LINESCROLL
1747 *
1748 * NOTE: dx is in average character widths, dy - in lines;
1749 *
1750 */
1751 static BOOL EDIT_EM_LineScroll(EDITSTATE *es, INT dx, INT dy)
1752 {
1753 if (!(es->style & ES_MULTILINE))
1754 return FALSE;
1755
1756 dx *= es->char_width;
1757 return EDIT_EM_LineScroll_internal(es, dx, dy);
1758 }
1759
1760
1761 /*********************************************************************
1762 *
1763 * EM_SCROLL
1764 *
1765 */
1766 static LRESULT EDIT_EM_Scroll(EDITSTATE *es, INT action)
1767 {
1768 INT dy;
1769
1770 if (!(es->style & ES_MULTILINE))
1771 return (LRESULT)FALSE;
1772
1773 dy = 0;
1774
1775 switch (action) {
1776 case SB_LINEUP:
1777 if (es->y_offset)
1778 dy = -1;
1779 break;
1780 case SB_LINEDOWN:
1781 if (es->y_offset < es->line_count - 1)
1782 dy = 1;
1783 break;
1784 case SB_PAGEUP:
1785 if (es->y_offset)
1786 dy = -(es->format_rect.bottom - es->format_rect.top) / es->line_height;
1787 break;
1788 case SB_PAGEDOWN:
1789 if (es->y_offset < es->line_count - 1)
1790 dy = (es->format_rect.bottom - es->format_rect.top) / es->line_height;
1791 break;
1792 default:
1793 return (LRESULT)FALSE;
1794 }
1795 if (dy) {
1796 INT vlc = get_vertical_line_count(es);
1797 /* check if we are going to move too far */
1798 if(es->y_offset + dy > es->line_count - vlc)
1799 dy = max(es->line_count - vlc, 0) - es->y_offset;
1800
1801 /* Notification is done in EDIT_EM_LineScroll */
1802 if(dy) {
1803 EDIT_EM_LineScroll(es, 0, dy);
1804 return MAKELONG(dy, TRUE);
1805 }
1806
1807 }
1808 return (LRESULT)FALSE;
1809 }
1810
1811
1812 /*********************************************************************
1813 *
1814 * EDIT_SetCaretPos
1815 *
1816 */
1817 static void EDIT_SetCaretPos(EDITSTATE *es, INT pos,
1818 BOOL after_wrap)
1819 {
1820 LRESULT res = EDIT_EM_PosFromChar(es, pos, after_wrap);
1821 TRACE("%d - %dx%d\n", pos, (short)LOWORD(res), (short)HIWORD(res));
1822 SetCaretPos((short)LOWORD(res), (short)HIWORD(res));
1823 }
1824
1825
1826 /*********************************************************************
1827 *
1828 * EM_SCROLLCARET
1829 *
1830 */
1831 static void EDIT_EM_ScrollCaret(EDITSTATE *es)
1832 {
1833 if (es->style & ES_MULTILINE) {
1834 INT l;
1835 INT vlc;
1836 INT ww;
1837 INT cw = es->char_width;
1838 INT x;
1839 INT dy = 0;
1840 INT dx = 0;
1841
1842 l = EDIT_EM_LineFromChar(es, es->selection_end);
1843 x = (short)LOWORD(EDIT_EM_PosFromChar(es, es->selection_end, es->flags & EF_AFTER_WRAP));
1844 vlc = get_vertical_line_count(es);
1845 if (l >= es->y_offset + vlc)
1846 dy = l - vlc + 1 - es->y_offset;
1847 if (l < es->y_offset)
1848 dy = l - es->y_offset;
1849 ww = es->format_rect.right - es->format_rect.left;
1850 if (x < es->format_rect.left)
1851 dx = x - es->format_rect.left - ww / HSCROLL_FRACTION / cw * cw;
1852 if (x > es->format_rect.right)
1853 dx = x - es->format_rect.left - (HSCROLL_FRACTION - 1) * ww / HSCROLL_FRACTION / cw * cw;
1854 if (dy || dx || (es->y_offset && (es->line_count - es->y_offset < vlc)))
1855 {
1856 /* check if we are going to move too far */
1857 if(es->x_offset + dx + ww > es->text_width)
1858 dx = es->text_width - ww - es->x_offset;
1859 if(dx || dy || (es->y_offset && (es->line_count - es->y_offset < vlc)))
1860 EDIT_EM_LineScroll_internal(es, dx, dy);
1861 }
1862 } else {
1863 INT x;
1864 INT goal;
1865 INT format_width;
1866
1867 x = (short)LOWORD(EDIT_EM_PosFromChar(es, es->selection_end, FALSE));
1868 format_width = es->format_rect.right - es->format_rect.left;
1869 if (x < es->format_rect.left) {
1870 goal = es->format_rect.left + format_width / HSCROLL_FRACTION;
1871 do {
1872 es->x_offset--;
1873 x = (short)LOWORD(EDIT_EM_PosFromChar(es, es->selection_end, FALSE));
1874 } while ((x < goal) && es->x_offset);
1875 /* FIXME: use ScrollWindow() somehow to improve performance */
1876 EDIT_UpdateText(es, NULL, TRUE);
1877 } else if (x > es->format_rect.right) {
1878 INT x_last;
1879 INT len = get_text_length(es);
1880 goal = es->format_rect.right - format_width / HSCROLL_FRACTION;
1881 do {
1882 es->x_offset++;
1883 x = (short)LOWORD(EDIT_EM_PosFromChar(es, es->selection_end, FALSE));
1884 x_last = (short)LOWORD(EDIT_EM_PosFromChar(es, len, FALSE));
1885 } while ((x > goal) && (x_last > es->format_rect.right));
1886 /* FIXME: use ScrollWindow() somehow to improve performance */
1887 EDIT_UpdateText(es, NULL, TRUE);
1888 }
1889 }
1890
1891 if(es->flags & EF_FOCUSED)
1892 EDIT_SetCaretPos(es, es->selection_end, es->flags & EF_AFTER_WRAP);
1893 }
1894
1895
1896 /*********************************************************************
1897 *
1898 * EDIT_MoveBackward
1899 *
1900 */
1901 static void EDIT_MoveBackward(EDITSTATE *es, BOOL extend)
1902 {
1903 INT e = es->selection_end;
1904
1905 if (e) {
1906 e--;
1907 if ((es->style & ES_MULTILINE) && e &&
1908 (es->text[e - 1] == '\r') && (es->text[e] == '\n')) {
1909 e--;
1910 if (e && (es->text[e - 1] == '\r'))
1911 e--;
1912 }
1913 }
1914 EDIT_EM_SetSel(es, extend ? es->selection_start : e, e, FALSE);
1915 EDIT_EM_ScrollCaret(es);
1916 }
1917
1918
1919 /*********************************************************************
1920 *
1921 * EDIT_MoveDown_ML
1922 *
1923 * Only for multi line controls
1924 * Move the caret one line down, on a column with the nearest
1925 * x coordinate on the screen (might be a different column).
1926 *
1927 */
1928 static void EDIT_MoveDown_ML(EDITSTATE *es, BOOL extend)
1929 {
1930 INT s = es->selection_start;
1931 INT e = es->selection_end;
1932 BOOL after_wrap = (es->flags & EF_AFTER_WRAP);
1933 LRESULT pos = EDIT_EM_PosFromChar(es, e, after_wrap);
1934 INT x = (short)LOWORD(pos);
1935 INT y = (short)HIWORD(pos);
1936
1937 e = EDIT_CharFromPos(es, x, y + es->line_height, &after_wrap);
1938 if (!extend)
1939 s = e;
1940 EDIT_EM_SetSel(es, s, e, after_wrap);
1941 EDIT_EM_ScrollCaret(es);
1942 }
1943
1944
1945 /*********************************************************************
1946 *
1947 * EDIT_MoveEnd
1948 *
1949 */
1950 static void EDIT_MoveEnd(EDITSTATE *es, BOOL extend, BOOL ctrl)
1951 {
1952 BOOL after_wrap = FALSE;
1953 INT e;
1954
1955 /* Pass a high value in x to make sure of receiving the end of the line */
1956 if (!ctrl && (es->style & ES_MULTILINE))
1957 e = EDIT_CharFromPos(es, 0x3fffffff,
1958 HIWORD(EDIT_EM_PosFromChar(es, es->selection_end, es->flags & EF_AFTER_WRAP)), &after_wrap);
1959 else
1960 e = get_text_length(es);
1961 EDIT_EM_SetSel(es, extend ? es->selection_start : e, e, after_wrap);
1962 EDIT_EM_ScrollCaret(es);
1963 }
1964
1965
1966 /*********************************************************************
1967 *
1968 * EDIT_MoveForward
1969 *
1970 */
1971 static void EDIT_MoveForward(EDITSTATE *es, BOOL extend)
1972 {
1973 INT e = es->selection_end;
1974
1975 if (es->text[e]) {
1976 e++;
1977 if ((es->style & ES_MULTILINE) && (es->text[e - 1] == '\r')) {
1978 if (es->text[e] == '\n')
1979 e++;
1980 else if ((es->text[e] == '\r') && (es->text[e + 1] == '\n'))
1981 e += 2;
1982 }
1983 }
1984 EDIT_EM_SetSel(es, extend ? es->selection_start : e, e, FALSE);
1985 EDIT_EM_ScrollCaret(es);
1986 }
1987
1988
1989 /*********************************************************************
1990 *
1991 * EDIT_MoveHome
1992 *
1993 * Home key: move to beginning of line.
1994 *
1995 */
1996 static void EDIT_MoveHome(EDITSTATE *es, BOOL extend, BOOL ctrl)
1997 {
1998 INT e;
1999
2000 /* Pass the x_offset in x to make sure of receiving the first position of the line */
2001 if (!ctrl && (es->style & ES_MULTILINE))
2002 e = EDIT_CharFromPos(es, -es->x_offset,
2003 HIWORD(EDIT_EM_PosFromChar(es, es->selection_end, es->flags & EF_AFTER_WRAP)), NULL);
2004 else
2005 e = 0;
2006 EDIT_EM_SetSel(es, extend ? es->selection_start : e, e, FALSE);
2007 EDIT_EM_ScrollCaret(es);
2008 }
2009
2010
2011 /*********************************************************************
2012 *
2013 * EDIT_MovePageDown_ML
2014 *
2015 * Only for multi line controls
2016 * Move the caret one page down, on a column with the nearest
2017 * x coordinate on the screen (might be a different column).
2018 *
2019 */
2020 static void EDIT_MovePageDown_ML(EDITSTATE *es, BOOL extend)
2021 {
2022 INT s = es->selection_start;
2023 INT e = es->selection_end;
2024 BOOL after_wrap = (es->flags & EF_AFTER_WRAP);
2025 LRESULT pos = EDIT_EM_PosFromChar(es, e, after_wrap);
2026 INT x = (short)LOWORD(pos);
2027 INT y = (short)HIWORD(pos);
2028
2029 e = EDIT_CharFromPos(es, x,
2030 y + (es->format_rect.bottom - es->format_rect.top),
2031 &after_wrap);
2032 if (!extend)
2033 s = e;
2034 EDIT_EM_SetSel(es, s, e, after_wrap);
2035 EDIT_EM_ScrollCaret(es);
2036 }
2037
2038
2039 /*********************************************************************
2040 *
2041 * EDIT_MovePageUp_ML
2042 *
2043 * Only for multi line controls
2044 * Move the caret one page up, on a column with the nearest
2045 * x coordinate on the screen (might be a different column).
2046 *
2047 */
2048 static void EDIT_MovePageUp_ML(EDITSTATE *es, BOOL extend)
2049 {
2050 INT s = es->selection_start;
2051 INT e = es->selection_end;
2052 BOOL after_wrap = (es->flags & EF_AFTER_WRAP);
2053 LRESULT pos = EDIT_EM_PosFromChar(es, e, after_wrap);
2054 INT x = (short)LOWORD(pos);
2055 INT y = (short)HIWORD(pos);
2056
2057 e = EDIT_CharFromPos(es, x,
2058 y - (es->format_rect.bottom - es->format_rect.top),
2059 &after_wrap);
2060 if (!extend)
2061 s = e;
2062 EDIT_EM_SetSel(es, s, e, after_wrap);
2063 EDIT_EM_ScrollCaret(es);
2064 }
2065
2066
2067 /*********************************************************************
2068 *
2069 * EDIT_MoveUp_ML
2070 *
2071 * Only for multi line controls
2072 * Move the caret one line up, on a column with the nearest
2073 * x coordinate on the screen (might be a different column).
2074 *
2075 */
2076 static void EDIT_MoveUp_ML(EDITSTATE *es, BOOL extend)
2077 {
2078 INT s = es->selection_start;
2079 INT e = es->selection_end;
2080 BOOL after_wrap = (es->flags & EF_AFTER_WRAP);
2081 LRESULT pos = EDIT_EM_PosFromChar(es, e, after_wrap);
2082 INT x = (short)LOWORD(pos);
2083 INT y = (short)HIWORD(pos);
2084
2085 e = EDIT_CharFromPos(es, x, y - es->line_height, &after_wrap);
2086 if (!extend)
2087 s = e;
2088 EDIT_EM_SetSel(es, s, e, after_wrap);
2089 EDIT_EM_ScrollCaret(es);
2090 }
2091
2092
2093 /*********************************************************************
2094 *
2095 * EDIT_MoveWordBackward
2096 *
2097 */
2098 static void EDIT_MoveWordBackward(EDITSTATE *es, BOOL extend)
2099 {
2100 INT s = es->selection_start;
2101 INT e = es->selection_end;
2102 INT l;
2103 INT ll;
2104 INT li;
2105
2106 l = EDIT_EM_LineFromChar(es, e);
2107 ll = EDIT_EM_LineLength(es, e);
2108 li = EDIT_EM_LineIndex(es, l);
2109 if (e - li == 0) {
2110 if (l) {
2111 li = EDIT_EM_LineIndex(es, l - 1);
2112 e = li + EDIT_EM_LineLength(es, li);
2113 }
2114 } else {
2115 e = li + EDIT_CallWordBreakProc(es, li, e - li, ll, WB_LEFT);
2116 }
2117 if (!extend)
2118 s = e;
2119 EDIT_EM_SetSel(es, s, e, FALSE);
2120 EDIT_EM_ScrollCaret(es);
2121 }
2122
2123
2124 /*********************************************************************
2125 *
2126 * EDIT_MoveWordForward
2127 *
2128 */
2129 static void EDIT_MoveWordForward(EDITSTATE *es, BOOL extend)
2130 {
2131 INT s = es->selection_start;
2132 INT e = es->selection_end;
2133 INT l;
2134 INT ll;
2135 INT li;
2136
2137 l = EDIT_EM_LineFromChar(es, e);
2138 ll = EDIT_EM_LineLength(es, e);
2139 li = EDIT_EM_LineIndex(es, l);
2140 if (e - li == ll) {
2141 if ((es->style & ES_MULTILINE) && (l != es->line_count - 1))
2142 e = EDIT_EM_LineIndex(es, l + 1);
2143 } else {
2144 e = li + EDIT_CallWordBreakProc(es,
2145 li, e - li + 1, ll, WB_RIGHT);
2146 }
2147 if (!extend)
2148 s = e;
2149 EDIT_EM_SetSel(es, s, e, FALSE);
2150 EDIT_EM_ScrollCaret(es);
2151 }
2152
2153
2154 /*********************************************************************
2155 *
2156 * EDIT_PaintText
2157 *
2158 */
2159 static INT EDIT_PaintText(EDITSTATE *es, HDC dc, INT x, INT y, INT line, INT col, INT count, BOOL rev)
2160 {
2161 COLORREF BkColor;
2162 COLORREF TextColor;
2163 LOGFONTW underline_font;
2164 HFONT hUnderline = 0;
2165 HFONT old_font = 0;
2166 INT ret;
2167 INT li;
2168 INT BkMode;
2169 SIZE size;
2170
2171 if (!count)
2172 return 0;
2173 BkMode = GetBkMode(dc);
2174 BkColor = GetBkColor(dc);
2175 TextColor = GetTextColor(dc);
2176 if (rev) {
2177 if (es->composition_len == 0)
2178 {
2179 SetBkColor(dc, GetSysColor(COLOR_HIGHLIGHT));
2180 SetTextColor(dc, GetSysColor(COLOR_HIGHLIGHTTEXT));
2181 SetBkMode( dc, OPAQUE);
2182 }
2183 else
2184 {
2185 HFONT current = GetCurrentObject(dc,OBJ_FONT);
2186 GetObjectW(current,sizeof(LOGFONTW),&underline_font);
2187 underline_font.lfUnderline = TRUE;
2188 hUnderline = CreateFontIndirectW(&underline_font);
2189 old_font = SelectObject(dc,hUnderline);
2190 }
2191 }
2192 li = EDIT_EM_LineIndex(es, line);
2193 if (es->style & ES_MULTILINE) {
2194 ret = (INT)LOWORD(TabbedTextOutW(dc, x, y, es->text + li + col, count,
2195 es->tabs_count, es->tabs, es->format_rect.left - es->x_offset));
2196 } else {
2197 LPWSTR text = es->text;
2198 TextOutW(dc, x, y, text + li + col, count);
2199 GetTextExtentPoint32W(dc, text + li + col, count, &size);
2200 ret = size.cx;
2201 if (es->style & ES_PASSWORD)
2202 HeapFree(GetProcessHeap(), 0, text);
2203 }
2204 if (rev) {
2205 if (es->composition_len == 0)
2206 {
2207 SetBkColor(dc, BkColor);
2208 SetTextColor(dc, TextColor);
2209 SetBkMode( dc, BkMode);
2210 }
2211 else
2212 {
2213 if (old_font)
2214 SelectObject(dc,old_font);
2215 if (hUnderline)
2216 DeleteObject(hUnderline);
2217 }
2218 }
2219 return ret;
2220 }
2221
2222
2223 /*********************************************************************
2224 *
2225 * EDIT_PaintLine
2226 *
2227 */
2228 static void EDIT_PaintLine(EDITSTATE *es, HDC dc, INT line, BOOL rev)
2229 {
2230 INT s = 0;
2231 INT e = 0;
2232 INT li = 0;
2233 INT ll = 0;
2234 INT x;
2235 INT y;
2236 LRESULT pos;
2237 SCRIPT_STRING_ANALYSIS ssa;
2238
2239 if (es->style & ES_MULTILINE) {
2240 INT vlc = get_vertical_line_count(es);
2241
2242 if ((line < es->y_offset) || (line > es->y_offset + vlc) || (line >= es->line_count))
2243 return;
2244 } else if (line)
2245 return;
2246
2247 TRACE("line=%d\n", line);
2248
2249 ssa = EDIT_UpdateUniscribeData(es, dc, line);
2250 pos = EDIT_EM_PosFromChar(es, EDIT_EM_LineIndex(es, line), FALSE);
2251 x = (short)LOWORD(pos);
2252 y = (short)HIWORD(pos);
2253
2254 if (es->style & ES_MULTILINE)
2255 {
2256 int line_idx = line;
2257 x = -es->x_offset;
2258 if (es->style & ES_RIGHT || es->style & ES_CENTER)
2259 {
2260 LINEDEF *line_def = es->first_line_def;
2261 int w, lw;
2262
2263 while (line_def && line_idx)
2264 {
2265 line_def = line_def->next;
2266 line_idx--;
2267 }
2268 w = es->format_rect.right - es->format_rect.left;
2269 lw = line_def->width;
2270
2271 if (es->style & ES_RIGHT)
2272 x = w - (lw - x);
2273 else if (es->style & ES_CENTER)
2274 x += (w - lw) / 2;
2275 }
2276 x += es->format_rect.left;
2277 }
2278
2279 if (rev)
2280 {
2281 li = EDIT_EM_LineIndex(es, line);
2282 ll = EDIT_EM_LineLength(es, li);
2283 s = min(es->selection_start, es->selection_end);
2284 e = max(es->selection_start, es->selection_end);
2285 s = min(li + ll, max(li, s));
2286 e = min(li + ll, max(li, e));
2287 }
2288
2289 if (ssa)
2290 ScriptStringOut(ssa, x, y, 0, &es->format_rect, s - li, e - li, FALSE);
2291 else if (rev && (s != e) &&
2292 ((es->flags & EF_FOCUSED) || (es->style & ES_NOHIDESEL))) {
2293 x += EDIT_PaintText(es, dc, x, y, line, 0, s - li, FALSE);
2294 x += EDIT_PaintText(es, dc, x, y, line, s - li, e - s, TRUE);
2295 x += EDIT_PaintText(es, dc, x, y, line, e - li, li + ll - e, FALSE);
2296 } else
2297 x += EDIT_PaintText(es, dc, x, y, line, 0, ll, FALSE);
2298 }
2299
2300
2301 /*********************************************************************
2302 *
2303 * EDIT_AdjustFormatRect
2304 *
2305 * Adjusts the format rectangle for the current font and the
2306 * current client rectangle.
2307 *
2308 */
2309 static void EDIT_AdjustFormatRect(EDITSTATE *es)
2310 {
2311 RECT ClientRect;
2312
2313 es->format_rect.right = max(es->format_rect.right, es->format_rect.left + es->char_width);
2314 if (es->style & ES_MULTILINE)
2315 {
2316 INT fw, vlc, max_x_offset, max_y_offset;
2317
2318 vlc = get_vertical_line_count(es);
2319 es->format_rect.bottom = es->format_rect.top + vlc * es->line_height;
2320
2321 /* correct es->x_offset */
2322 fw = es->format_rect.right - es->format_rect.left;
2323 max_x_offset = es->text_width - fw;
2324 if(max_x_offset < 0) max_x_offset = 0;
2325 if(es->x_offset > max_x_offset)
2326 es->x_offset = max_x_offset;
2327
2328 /* correct es->y_offset */
2329 max_y_offset = es->line_count - vlc;
2330 if(max_y_offset < 0) max_y_offset = 0;
2331 if(es->y_offset > max_y_offset)
2332 es->y_offset = max_y_offset;
2333
2334 /* force scroll info update */
2335 EDIT_UpdateScrollInfo(es);
2336 }
2337 else
2338 /* Windows doesn't care to fix text placement for SL controls */
2339 es->format_rect.bottom = es->format_rect.top + es->line_height;
2340
2341 /* Always stay within the client area */
2342 GetClientRect(es->hwndSelf, &ClientRect);
2343 es->format_rect.bottom = min(es->format_rect.bottom, ClientRect.bottom);
2344
2345 if ((es->style & ES_MULTILINE) && !(es->style & ES_AUTOHSCROLL))
2346 EDIT_BuildLineDefs_ML(es, 0, get_text_length(es), 0, NULL);
2347
2348 EDIT_SetCaretPos(es, es->selection_end, es->flags & EF_AFTER_WRAP);
2349 }
2350
2351
2352 /*********************************************************************
2353 *
2354 * EDIT_SetRectNP
2355 *
2356 * note: this is not (exactly) the handler called on EM_SETRECTNP
2357 * it is also used to set the rect of a single line control
2358 *
2359 */
2360 static void EDIT_SetRectNP(EDITSTATE *es, const RECT *rc)
2361 {
2362 LONG_PTR ExStyle;
2363 INT bw, bh;
2364 ExStyle = GetWindowLongPtrW(es->hwndSelf, GWL_EXSTYLE);
2365
2366 CopyRect(&es->format_rect, rc);
2367
2368 if (ExStyle & WS_EX_CLIENTEDGE) {
2369 es->format_rect.left++;
2370 es->format_rect.right--;
2371
2372 if (es->format_rect.bottom - es->format_rect.top
2373 >= es->line_height + 2)
2374 {
2375 es->format_rect.top++;
2376 es->format_rect.bottom--;
2377 }
2378 }
2379 else if (es->style & WS_BORDER) {
2380 bw = GetSystemMetrics(SM_CXBORDER) + 1;
2381 bh = GetSystemMetrics(SM_CYBORDER) + 1;
2382 es->format_rect.left += bw;
2383 es->format_rect.right -= bw;
2384 if (es->format_rect.bottom - es->format_rect.top
2385 >= es->line_height + 2 * bh)
2386 {
2387 es->format_rect.top += bh;
2388 es->format_rect.bottom -= bh;
2389 }
2390 }
2391
2392 es->format_rect.left += es->left_margin;
2393 es->format_rect.right -= es->right_margin;
2394 EDIT_AdjustFormatRect(es);
2395 }
2396
2397
2398 /*********************************************************************
2399 *
2400 * EM_CHARFROMPOS
2401 *
2402 * returns line number (not index) in high-order word of result.
2403 * NB : Q137805 is unclear about this. POINT * pointer in lParam apply
2404 * to Richedit, not to the edit control. Original documentation is valid.
2405 * FIXME: do the specs mean to return -1 if outside client area or
2406 * if outside formatting rectangle ???
2407 *
2408 */
2409 static LRESULT EDIT_EM_CharFromPos(EDITSTATE *es, INT x, INT y)
2410 {
2411 POINT pt;
2412 RECT rc;
2413 INT index;
2414
2415 pt.x = x;
2416 pt.y = y;
2417 GetClientRect(es->hwndSelf, &rc);
2418 if (!PtInRect(&rc, pt))
2419 return -1;
2420
2421 index = EDIT_CharFromPos(es, x, y, NULL);
2422 return MAKELONG(index, EDIT_EM_LineFromChar(es, index));
2423 }
2424
2425
2426 /*********************************************************************
2427 *
2428 * EM_FMTLINES
2429 *
2430 * Enable or disable soft breaks.
2431 *
2432 * This means: insert or remove the soft linebreak character (\r\r\n).
2433 * Take care to check if the text still fits the buffer after insertion.
2434 * If not, notify with EN_ERRSPACE.
2435 *
2436 */
2437 static BOOL EDIT_EM_FmtLines(EDITSTATE *es, BOOL add_eol)
2438 {
2439 es->flags &= ~EF_USE_SOFTBRK;
2440 if (add_eol) {
2441 es->flags |= EF_USE_SOFTBRK;
2442 FIXME("soft break enabled, not implemented\n");
2443 }
2444 return add_eol;
2445 }
2446
2447
2448 /*********************************************************************
2449 *
2450 * EM_GETHANDLE
2451 *
2452 * Hopefully this won't fire back at us.
2453 * We always start with a fixed buffer in the local heap.
2454 * Despite of the documentation says that the local heap is used
2455 * only if DS_LOCALEDIT flag is set, NT and 2000 always allocate
2456 * buffer on the local heap.
2457 *
2458 */
2459 static HLOCAL EDIT_EM_GetHandle(EDITSTATE *es)
2460 {
2461 HLOCAL hLocal;
2462
2463 if (!(es->style & ES_MULTILINE))
2464 return 0;
2465
2466 if(es->is_unicode)
2467 hLocal = es->hloc32W;
2468 else
2469 {
2470 if(!es->hloc32A)
2471 {
2472 CHAR *textA;
2473 UINT countA, alloc_size;
2474 TRACE("Allocating 32-bit ANSI alias buffer\n");
2475 countA = WideCharToMultiByte(CP_ACP, 0, es->text, -1, NULL, 0, NULL, NULL);
2476 alloc_size = ROUND_TO_GROW(countA);
2477 if(!(es->hloc32A = LocalAlloc(LMEM_MOVEABLE | LMEM_ZEROINIT, alloc_size)))
2478 {
2479 ERR("Could not allocate %d bytes for 32-bit ANSI alias buffer\n", alloc_size);
2480 return 0;
2481 }
2482 textA = LocalLock(es->hloc32A);
2483 WideCharToMultiByte(CP_ACP, 0, es->text, -1, textA, countA, NULL, NULL);
2484 LocalUnlock(es->hloc32A);
2485 }
2486 hLocal = es->hloc32A;
2487 }
2488
2489 EDIT_UnlockBuffer(es, TRUE);
2490
2491 /* The text buffer handle belongs to the app */
2492 es->hlocapp = hLocal;
2493
2494 TRACE("Returning %p, LocalSize() = %ld\n", hLocal, LocalSize(hLocal));
2495 return hLocal;
2496 }
2497
2498
2499 /*********************************************************************
2500 *
2501 * EM_GETLINE
2502 *
2503 */
2504 static INT EDIT_EM_GetLine(EDITSTATE *es, INT line, LPWSTR dst, BOOL unicode)
2505 {
2506 LPWSTR src;
2507 INT line_len, dst_len;
2508 INT i;
2509
2510 if (es->style & ES_MULTILINE) {
2511 if (line >= es->line_count)
2512 return 0;
2513 } else
2514 line = 0;
2515 i = EDIT_EM_LineIndex(es, line);
2516 src = es->text + i;
2517 line_len = EDIT_EM_LineLength(es, i);
2518 dst_len = *(WORD *)dst;
2519 if(unicode)
2520 {
2521 if(dst_len <= line_len)
2522 {
2523 memcpy(dst, src, dst_len * sizeof(WCHAR));
2524 return dst_len;
2525 }
2526 else /* Append 0 if enough space */
2527 {
2528 memcpy(dst, src, line_len * sizeof(WCHAR));
2529 dst[line_len] = 0;
2530 return line_len;
2531 }
2532 }
2533 else
2534 {
2535 INT ret = WideCharToMultiByte(CP_ACP, 0, src, line_len, (LPSTR)dst, dst_len, NULL, NULL);
2536 if(!ret && line_len) /* Insufficient buffer size */
2537 return dst_len;
2538 if(ret < dst_len) /* Append 0 if enough space */
2539 ((LPSTR)dst)[ret] = 0;
2540 return ret;
2541 }
2542 }
2543
2544
2545 /*********************************************************************
2546 *
2547 * EM_GETSEL
2548 *
2549 */
2550 static LRESULT EDIT_EM_GetSel(const EDITSTATE *es, PUINT start, PUINT end)
2551 {
2552 UINT s = es->selection_start;
2553 UINT e = es->selection_end;
2554
2555 ORDER_UINT(s, e);
2556 if (start)
2557 *start = s;
2558 if (end)
2559 *end = e;
2560 return MAKELONG(s, e);
2561 }
2562
2563
2564 /*********************************************************************
2565 *
2566 * EM_REPLACESEL
2567 *
2568 * FIXME: handle ES_NUMBER and ES_OEMCONVERT here
2569 *
2570 */
2571 static void EDIT_EM_ReplaceSel(EDITSTATE *es, BOOL can_undo, LPCWSTR lpsz_replace, BOOL send_update, BOOL honor_limit)
2572 {
2573 UINT strl = strlenW(lpsz_replace);
2574 UINT tl = get_text_length(es);
2575 UINT utl;
2576 UINT s;
2577 UINT e;
2578 UINT i;
2579 UINT size;
2580 LPWSTR p;
2581 HRGN hrgn = 0;
2582 LPWSTR buf = NULL;
2583 UINT bufl = 0;
2584
2585 TRACE("%s, can_undo %d, send_update %d\n",
2586 debugstr_w(lpsz_replace), can_undo, send_update);
2587
2588 s = es->selection_start;
2589 e = es->selection_end;
2590
2591 EDIT_InvalidateUniscribeData(es);
2592 if ((s == e) && !strl)
2593 return;
2594
2595 ORDER_UINT(s, e);
2596
2597 size = tl - (e - s) + strl;
2598 if (!size)
2599 es->text_width = 0;
2600
2601 /* Issue the EN_MAXTEXT notification and continue with replacing text
2602 * such that buffer limit is honored. */
2603 if ((honor_limit) && (size > es->buffer_limit)) {
2604 EDIT_NOTIFY_PARENT(es, EN_MAXTEXT);
2605 /* Buffer limit can be smaller than the actual length of text in combobox */
2606 if (es->buffer_limit < (tl - (e-s)))
2607 strl = 0;
2608 else
2609 strl = es->buffer_limit - (tl - (e-s));
2610 }
2611
2612 if (!EDIT_MakeFit(es, tl - (e - s) + strl))
2613 return;
2614
2615 if (e != s) {
2616 /* there is something to be deleted */
2617 TRACE("deleting stuff.\n");
2618 bufl = e - s;
2619 buf = HeapAlloc(GetProcessHeap(), 0, (bufl + 1) * sizeof(WCHAR));
2620 if (!buf) return;
2621 memcpy(buf, es->text + s, bufl * sizeof(WCHAR));
2622 buf[bufl] = 0; /* ensure 0 termination */
2623 /* now delete */
2624 strcpyW(es->text + s, es->text + e);
2625 text_buffer_changed(es);
2626 }
2627 if (strl) {
2628 /* there is an insertion */
2629 tl = get_text_length(es);
2630 TRACE("inserting stuff (tl %d, strl %d, selstart %d (%s), text %s)\n", tl, strl, s, debugstr_w(es->text + s), debugstr_w(es->text));
2631 for (p = es->text + tl ; p >= es->text + s ; p--)
2632 p[strl] = p[0];
2633 for (i = 0 , p = es->text + s ; i < strl ; i++)
2634 p[i] = lpsz_replace[i];
2635 if(es->style & ES_UPPERCASE)
2636 CharUpperBuffW(p, strl);
2637 else if(es->style & ES_LOWERCASE)
2638 CharLowerBuffW(p, strl);
2639 text_buffer_changed(es);
2640 }
2641 if (es->style & ES_MULTILINE)
2642 {
2643 INT st = min(es->selection_start, es->selection_end);
2644 INT vlc = get_vertical_line_count(es);
2645
2646 hrgn = CreateRectRgn(0, 0, 0, 0);
2647 EDIT_BuildLineDefs_ML(es, st, st + strl,
2648 strl - abs(es->selection_end - es->selection_start), hrgn);
2649 /* if text is too long undo all changes */
2650 if (honor_limit && !(es->style & ES_AUTOVSCROLL) && (es->line_count > vlc)) {
2651 if (strl)
2652 strcpyW(es->text + e, es->text + e + strl);
2653 if (e != s)
2654 for (i = 0 , p = es->text ; i < e - s ; i++)
2655 p[i + s] = buf[i];
2656 text_buffer_changed(es);
2657 EDIT_BuildLineDefs_ML(es, s, e,
2658 abs(es->selection_end - es->selection_start) - strl, hrgn);
2659 strl = 0;
2660 e = s;
2661 hrgn = CreateRectRgn(0, 0, 0, 0);
2662 EDIT_NOTIFY_PARENT(es, EN_MAXTEXT);
2663 }
2664 }
2665 else {
2666 INT fw = es->format_rect.right - es->format_rect.left;
2667 EDIT_InvalidateUniscribeData(es);
2668 EDIT_CalcLineWidth_SL(es);
2669 /* remove chars that don't fit */
2670 if (honor_limit && !(es->style & ES_AUTOHSCROLL) && (es->text_width > fw)) {
2671 while ((es->text_width > fw) && s + strl >= s) {
2672 strcpyW(es->text + s + strl - 1, es->text + s + strl);
2673 strl--;
2674 es->text_length = -1;
2675 EDIT_InvalidateUniscribeData(es);
2676 EDIT_CalcLineWidth_SL(es);
2677 }
2678 text_buffer_changed(es);
2679 EDIT_NOTIFY_PARENT(es, EN_MAXTEXT);
2680 }
2681 }
2682
2683 if (e != s) {
2684 if (can_undo) {
2685 utl = strlenW(es->undo_text);
2686 if (!es->undo_insert_count && (*es->undo_text && (s == es->undo_position))) {
2687 /* undo-buffer is extended to the right */
2688 EDIT_MakeUndoFit(es, utl + e - s);
2689 memcpy(es->undo_text + utl, buf, (e - s)*sizeof(WCHAR));
2690 (es->undo_text + utl)[e - s] = 0; /* ensure 0 termination */
2691 } else if (!es->undo_insert_count && (*es->undo_text && (e == es->undo_position))) {
2692 /* undo-buffer is extended to the left */
2693 EDIT_MakeUndoFit(es, utl + e - s);
2694 for (p = es->undo_text + utl ; p >= es->undo_text ; p--)
2695 p[e - s] = p[0];
2696 for (i = 0 , p = es->undo_text ; i < e - s ; i++)
2697 p[i] = buf[i];
2698 es->undo_position = s;
2699 } else {
2700 /* new undo-buffer */
2701 EDIT_MakeUndoFit(es, e - s);
2702 memcpy(es->undo_text, buf, (e - s)*sizeof(WCHAR));
2703 es->undo_text[e - s] = 0; /* ensure 0 termination */
2704 es->undo_position = s;
2705 }
2706 /* any deletion makes the old insertion-undo invalid */
2707 es->undo_insert_count = 0;
2708 } else
2709 EDIT_EM_EmptyUndoBuffer(es);
2710 }
2711 if (strl) {
2712 if (can_undo) {
2713 if ((s == es->undo_position) ||
2714 ((es->undo_insert_count) &&
2715 (s == es->undo_position + es->undo_insert_count)))
2716 /*
2717 * insertion is new and at delete position or
2718 * an extension to either left or right
2719 */
2720 es->undo_insert_count += strl;
2721 else {
2722 /* new insertion undo */
2723 es->undo_position = s;
2724 es->undo_insert_count = strl;
2725 /* new insertion makes old delete-buffer invalid */
2726 *es->undo_text = '\0';
2727 }
2728 } else
2729 EDIT_EM_EmptyUndoBuffer(es);
2730 }
2731
2732 if (bufl)
2733 HeapFree(GetProcessHeap(), 0, buf);
2734
2735 s += strl;
2736
2737 /* If text has been deleted and we're right or center aligned then scroll rightward */
2738 if (es->style & (ES_RIGHT | ES_CENTER))
2739 {
2740 INT delta = strl - abs(es->selection_end - es->selection_start);
2741
2742 if (delta < 0 && es->x_offset)
2743 {
2744 if (abs(delta) > es->x_offset)
2745 es->x_offset = 0;
2746 else
2747 es->x_offset += delta;
2748 }
2749 }
2750
2751 EDIT_EM_SetSel(es, s, s, FALSE);
2752 es->flags |= EF_MODIFIED;
2753 if (send_update) es->flags |= EF_UPDATE;
2754 if (hrgn)
2755 {
2756 EDIT_UpdateTextRegion(es, hrgn, TRUE);
2757 DeleteObject(hrgn);
2758 }
2759 else
2760 EDIT_UpdateText(es, NULL, TRUE);
2761
2762 EDIT_EM_ScrollCaret(es);
2763
2764 /* force scroll info update */
2765 EDIT_UpdateScrollInfo(es);
2766
2767
2768 if(send_update || (es->flags & EF_UPDATE))
2769 {
2770 es->flags &= ~EF_UPDATE;
2771 EDIT_NOTIFY_PARENT(es, EN_CHANGE);
2772 }
2773 EDIT_InvalidateUniscribeData(es);
2774 }
2775
2776
2777 /*********************************************************************
2778 *
2779 * EM_SETHANDLE
2780 *
2781 * FIXME: ES_LOWERCASE, ES_UPPERCASE, ES_OEMCONVERT, ES_NUMBER ???
2782 *
2783 */
2784 static void EDIT_EM_SetHandle(EDITSTATE *es, HLOCAL hloc)
2785 {
2786 if (!(es->style & ES_MULTILINE))
2787 return;
2788
2789 if (!hloc) {
2790 WARN("called with NULL handle\n");
2791 return;
2792 }
2793
2794 EDIT_UnlockBuffer(es, TRUE);
2795
2796 if(es->is_unicode)
2797 {
2798 if(es->hloc32A)
2799 {
2800 LocalFree(es->hloc32A);
2801 es->hloc32A = NULL;
2802 }
2803 es->hloc32W = hloc;
2804 }
2805 else
2806 {
2807 INT countW, countA;
2808 HLOCAL hloc32W_new;
2809 WCHAR *textW;
2810 CHAR *textA;
2811
2812 countA = LocalSize(hloc);
2813 textA = LocalLock(hloc);
2814 countW = MultiByteToWideChar(CP_ACP, 0, textA, countA, NULL, 0);
2815 if(!(hloc32W_new = LocalAlloc(LMEM_MOVEABLE | LMEM_ZEROINIT, countW * sizeof(WCHAR))))
2816 {
2817 ERR("Could not allocate new unicode buffer\n");
2818 return;
2819 }
2820 textW = LocalLock(hloc32W_new);
2821 MultiByteToWideChar(CP_ACP, 0, textA, countA, textW, countW);
2822 LocalUnlock(hloc32W_new);
2823 LocalUnlock(hloc);
2824
2825 if(es->hloc32W)
2826 LocalFree(es->hloc32W);
2827
2828 es->hloc32W = hloc32W_new;
2829 es->hloc32A = hloc;
2830 }
2831
2832 es->buffer_size = LocalSize(es->hloc32W)/sizeof(WCHAR) - 1;
2833
2834 /* The text buffer handle belongs to the control */
2835 es->hlocapp = NULL;
2836
2837 EDIT_LockBuffer(es);
2838 text_buffer_changed(es);
2839
2840 es->x_offset = es->y_offset = 0;
2841 es->selection_start = es->selection_end = 0;
2842 EDIT_EM_EmptyUndoBuffer(es);
2843 es->flags &= ~EF_MODIFIED;
2844 es->flags &= ~EF_UPDATE;
2845 EDIT_BuildLineDefs_ML(es, 0, get_text_length(es), 0, NULL);
2846 EDIT_UpdateText(es, NULL, TRUE);
2847 EDIT_EM_ScrollCaret(es);
2848 /* force scroll info update */
2849 EDIT_UpdateScrollInfo(es);
2850 }
2851
2852
2853 /*********************************************************************
2854 *
2855 * EM_SETLIMITTEXT
2856 *
2857 * NOTE: this version currently implements WinNT limits
2858 *
2859 */
2860 static void EDIT_EM_SetLimitText(EDITSTATE *es, UINT limit)
2861 {
2862 if (!limit) limit = ~0u;
2863 if (!(es->style & ES_MULTILINE)) limit = min(limit, 0x7ffffffe);
2864 es->buffer_limit = limit;
2865 }
2866
2867
2868 /*********************************************************************
2869 *
2870 * EM_SETMARGINS
2871 *
2872 * EC_USEFONTINFO is used as a left or right value i.e. lParam and not as an
2873 * action wParam despite what the docs say. EC_USEFONTINFO calculates the
2874 * margin according to the textmetrics of the current font.
2875 *
2876 * FIXME - With TrueType or vector fonts EC_USEFONTINFO currently sets one third
2877 * of the char's width as the margin, but this is not how Windows handles this.
2878 * For all other fonts Windows sets the margins to zero.
2879 *
2880 * FIXME - When EC_USEFONTINFO is used the margins only change if the
2881 * edit control is equal to or larger than a certain size.
2882 * Interestingly if one subtracts both the left and right margins from
2883 * this size one always seems to get an even number. The extents of
2884 * the (four character) string "'**'" match this quite closely, so
2885 * we'll use this until we come up with a better idea.
2886 */
2887 static int calc_min_set_margin_size(HDC dc, INT left, INT right)
2888 {
2889 WCHAR magic_string[] = {'\'','*','*','\'', 0};
2890 SIZE sz;
2891
2892 GetTextExtentPointW(dc, magic_string, sizeof(magic_string)/sizeof(WCHAR) - 1, &sz);
2893 return sz.cx + left + right;
2894 }
2895
2896 static void EDIT_EM_SetMargins(EDITSTATE *es, INT action,
2897 WORD left, WORD right, BOOL repaint)
2898 {
2899 TEXTMETRICW tm;
2900 INT default_left_margin = 0; /* in pixels */
2901 INT default_right_margin = 0; /* in pixels */
2902
2903 /* Set the default margins depending on the font */
2904 if (es->font && (left == EC_USEFONTINFO || right == EC_USEFONTINFO)) {
2905 HDC dc = GetDC(es->hwndSelf);
2906 HFONT old_font = SelectObject(dc, es->font);
2907 GetTextMetricsW(dc, &tm);
2908 /* The default margins are only non zero for TrueType or Vector fonts */
2909 if (tm.tmPitchAndFamily & ( TMPF_VECTOR | TMPF_TRUETYPE )) {
2910 int min_size;
2911 RECT rc;
2912 /* This must be calculated more exactly! But how? */
2913 default_left_margin = tm.tmAveCharWidth / 2;
2914 default_right_margin = tm.tmAveCharWidth / 2;
2915 min_size = calc_min_set_margin_size(dc, default_left_margin, default_right_margin);
2916 GetClientRect(es->hwndSelf, &rc);
2917 if(rc.right - rc.left < min_size) {
2918 default_left_margin = es->left_margin;
2919 default_right_margin = es->right_margin;
2920 }
2921 }
2922 SelectObject(dc, old_font);
2923 ReleaseDC(es->hwndSelf, dc);
2924 }
2925
2926 if (action & EC_LEFTMARGIN) {
2927 es->format_rect.left -= es->left_margin;
2928 if (left != EC_USEFONTINFO)
2929 es->left_margin = left;
2930 else
2931 es->left_margin = default_left_margin;
2932 es->format_rect.left += es->left_margin;
2933 }
2934
2935 if (action & EC_RIGHTMARGIN) {
2936 es->format_rect.right += es->right_margin;
2937 if (right != EC_USEFONTINFO)
2938 es->right_margin = right;
2939 else
2940 es->right_margin = default_right_margin;
2941 es->format_rect.right -= es->right_margin;
2942 }
2943
2944 if (action & (EC_LEFTMARGIN | EC_RIGHTMARGIN)) {
2945 EDIT_AdjustFormatRect(es);
2946 if (repaint) EDIT_UpdateText(es, NULL, TRUE);
2947 }
2948
2949 TRACE("left=%d, right=%d\n", es->left_margin, es->right_margin);
2950 }
2951
2952
2953 /*********************************************************************
2954 *
2955 * EM_SETPASSWORDCHAR
2956 *
2957 */
2958 static void EDIT_EM_SetPasswordChar(EDITSTATE *es, WCHAR c)
2959 {
2960 LONG style;
2961
2962 if (es->style & ES_MULTILINE)
2963 return;
2964
2965 if (es->password_char == c)
2966 return;
2967
2968 style = GetWindowLongW( es->hwndSelf, GWL_STYLE );
2969 es->password_char = c;
2970 if (c) {
2971 SetWindowLongW( es->hwndSelf, GWL_STYLE, style | ES_PASSWORD );
2972 es->style |= ES_PASSWORD;
2973 } else {
2974 SetWindowLongW( es->hwndSelf, GWL_STYLE, style & ~ES_PASSWORD );
2975 es->style &= ~ES_PASSWORD;
2976 }
2977 EDIT_InvalidateUniscribeData(es);
2978 EDIT_UpdateText(es, NULL, TRUE);
2979 }
2980
2981
2982 /*********************************************************************
2983 *
2984 * EM_SETTABSTOPS
2985 *
2986 */
2987 static BOOL EDIT_EM_SetTabStops(EDITSTATE *es, INT count, const INT *tabs)
2988 {
2989 if (!(es->style & ES_MULTILINE))
2990 return FALSE;
2991 HeapFree(GetProcessHeap(), 0, es->tabs);
2992 es->tabs_count = count;
2993 if (!count)
2994 es->tabs = NULL;
2995 else {
2996 es->tabs = HeapAlloc(GetProcessHeap(), 0, count * sizeof(INT));
2997 memcpy(es->tabs, tabs, count * sizeof(INT));
2998 }
2999 EDIT_InvalidateUniscribeData(es);
3000 return TRUE;
3001 }
3002
3003
3004 /*********************************************************************
3005 *
3006 * EM_SETWORDBREAKPROC
3007 *
3008 */
3009 static void EDIT_EM_SetWordBreakProc(EDITSTATE *es, void *wbp)
3010 {
3011 if (es->word_break_proc == wbp)
3012 return;
3013
3014 es->word_break_proc = wbp;
3015
3016 if ((es->style & ES_MULTILINE) && !(es->style & ES_AUTOHSCROLL)) {
3017 EDIT_BuildLineDefs_ML(es, 0, get_text_length(es), 0, NULL);
3018 EDIT_UpdateText(es, NULL, TRUE);
3019 }
3020 }
3021
3022
3023 /*********************************************************************
3024 *
3025 * EM_UNDO / WM_UNDO
3026 *
3027 */
3028 static BOOL EDIT_EM_Undo(EDITSTATE *es)
3029 {
3030 INT ulength;
3031 LPWSTR utext;
3032
3033 /* As per MSDN spec, for a single-line edit control,
3034 the return value is always TRUE */
3035 if( es->style & ES_READONLY )
3036 return !(es->style & ES_MULTILINE);
3037
3038 ulength = strlenW(es->undo_text);
3039
3040 utext = HeapAlloc(GetProcessHeap(), 0, (ulength + 1) * sizeof(WCHAR));
3041
3042 strcpyW(utext, es->undo_text);
3043
3044 TRACE("before UNDO:insertion length = %d, deletion buffer = %s\n",
3045 es->undo_insert_count, debugstr_w(utext));
3046
3047 EDIT_EM_SetSel(es, es->undo_position, es->undo_position + es->undo_insert_count, FALSE);
3048 EDIT_EM_EmptyUndoBuffer(es);
3049 EDIT_EM_ReplaceSel(es, TRUE, utext, TRUE, TRUE);
3050 EDIT_EM_SetSel(es, es->undo_position, es->undo_position + es->undo_insert_count, FALSE);
3051 /* send the notification after the selection start and end are set */
3052 EDIT_NOTIFY_PARENT(es, EN_CHANGE);
3053 EDIT_EM_ScrollCaret(es);
3054 HeapFree(GetProcessHeap(), 0, utext);
3055
3056 TRACE("after UNDO:insertion length = %d, deletion buffer = %s\n",
3057 es->undo_insert_count, debugstr_w(es->undo_text));
3058 return TRUE;
3059 }
3060
3061
3062 /* Helper function for WM_CHAR
3063 *
3064 * According to an MSDN blog article titled "Just because you're a control
3065 * doesn't mean that you're necessarily inside a dialog box," multiline edit
3066 * controls without ES_WANTRETURN would attempt to detect whether it is inside
3067 * a dialog box or not.
3068 */
3069 static inline BOOL EDIT_IsInsideDialog(EDITSTATE *es)
3070 {
3071 return (es->flags & EF_DIALOGMODE);
3072 }
3073
3074
3075 /*********************************************************************
3076 *
3077 * WM_PASTE
3078 *
3079 */
3080 static void EDIT_WM_Paste(EDITSTATE *es)
3081 {
3082 HGLOBAL hsrc;
3083 LPWSTR src;
3084
3085 /* Protect read-only edit control from modification */
3086 if(es->style & ES_READONLY)
3087 return;
3088
3089 OpenClipboard(es->hwndSelf);
3090 if ((hsrc = GetClipboardData(CF_UNICODETEXT))) {
3091 src = GlobalLock(hsrc);
3092 EDIT_EM_ReplaceSel(es, TRUE, src, TRUE, TRUE);
3093 GlobalUnlock(hsrc);
3094 }
3095 else if (es->style & ES_PASSWORD) {
3096 /* clear selected text in password edit box even with empty clipboard */
3097 EDIT_EM_ReplaceSel(es, TRUE, empty_stringW, TRUE, TRUE);
3098 }
3099 CloseClipboard();
3100 }
3101
3102
3103 /*********************************************************************
3104 *
3105 * WM_COPY
3106 *
3107 */
3108 static void EDIT_WM_Copy(EDITSTATE *es)
3109 {
3110 INT s = min(es->selection_start, es->selection_end);
3111 INT e = max(es->selection_start, es->selection_end);
3112 HGLOBAL hdst;
3113 LPWSTR dst;
3114 DWORD len;
3115
3116 if (e == s) return;
3117
3118 len = e - s;
3119 hdst = GlobalAlloc(GMEM_MOVEABLE | GMEM_DDESHARE, (len + 1) * sizeof(WCHAR));
3120 dst = GlobalLock(hdst);
3121 memcpy(dst, es->text + s, len * sizeof(WCHAR));
3122 dst[len] = 0; /* ensure 0 termination */
3123 TRACE("%s\n", debugstr_w(dst));
3124 GlobalUnlock(hdst);
3125 OpenClipboard(es->hwndSelf);
3126 EmptyClipboard();
3127 SetClipboardData(CF_UNICODETEXT, hdst);
3128 CloseClipboard();
3129 }
3130
3131
3132 /*********************************************************************
3133 *
3134 * WM_CLEAR
3135 *
3136 */
3137 static inline void EDIT_WM_Clear(EDITSTATE *es)
3138 {
3139 /* Protect read-only edit control from modification */
3140 if(es->style & ES_READONLY)
3141 return;
3142
3143 EDIT_EM_ReplaceSel(es, TRUE, empty_stringW, TRUE, TRUE);
3144 }
3145
3146
3147 /*********************************************************************
3148 *
3149 * WM_CUT
3150 *
3151 */
3152 static inline void EDIT_WM_Cut(EDITSTATE *es)
3153 {
3154 EDIT_WM_Copy(es);
3155 EDIT_WM_Clear(es);
3156 }
3157
3158
3159 /*********************************************************************
3160 *
3161 * WM_CHAR
3162 *
3163 */
3164 static LRESULT EDIT_WM_Char(EDITSTATE *es, WCHAR c)
3165 {
3166 BOOL control;
3167
3168 control = GetKeyState(VK_CONTROL) & 0x8000;
3169
3170 switch (c) {
3171 case '\r':
3172 /* If it's not a multiline edit box, it would be ignored below.
3173 * For multiline edit without ES_WANTRETURN, we have to make a
3174 * special case.
3175 */
3176 if ((es->style & ES_MULTILINE) && !(es->style & ES_WANTRETURN))
3177 if (EDIT_IsInsideDialog(es))
3178 break;
3179 case '\n':
3180 if (es->style & ES_MULTILINE) {
3181 if (es->style & ES_READONLY) {
3182 EDIT_MoveHome(es, FALSE, FALSE);
3183 EDIT_MoveDown_ML(es, FALSE);
3184 } else {
3185 static const WCHAR cr_lfW[] = {'\r','\n',0};
3186 EDIT_EM_ReplaceSel(es, TRUE, cr_lfW, TRUE, TRUE);
3187 }
3188 }
3189 break;
3190 case '\t':
3191 if ((es->style & ES_MULTILINE) && !(es->style & ES_READONLY))
3192 {
3193 static const WCHAR tabW[] = {'\t',0};
3194 if (EDIT_IsInsideDialog(es))
3195 break;
3196 EDIT_EM_ReplaceSel(es, TRUE, tabW, TRUE, TRUE);
3197 }
3198 break;
3199 case VK_BACK:
3200 if (!(es->style & ES_READONLY) && !control) {
3201 if (es->selection_start != es->selection_end)
3202 EDIT_WM_Clear(es);
3203 else {
3204 /* delete character left of caret */
3205 EDIT_EM_SetSel(es, (UINT)-1, 0, FALSE);
3206 EDIT_MoveBackward(es, TRUE);
3207 EDIT_WM_Clear(es);
3208 }
3209 }
3210 break;
3211 case 0x03: /* ^C */
3212 if (!(es->style & ES_PASSWORD))
3213 SendMessageW(es->hwndSelf, WM_COPY, 0, 0);
3214 break;
3215 case 0x16: /* ^V */
3216 if (!(es->style & ES_READONLY))
3217 SendMessageW(es->hwndSelf, WM_PASTE, 0, 0);
3218 break;
3219 case 0x18: /* ^X */
3220 if (!((es->style & ES_READONLY) || (es->style & ES_PASSWORD)))
3221 SendMessageW(es->hwndSelf, WM_CUT, 0, 0);
3222 break;
3223 case 0x1A: /* ^Z */
3224 if (!(es->style & ES_READONLY))
3225 SendMessageW(es->hwndSelf, WM_UNDO, 0, 0);
3226 break;
3227
3228 default:
3229 /*If Edit control style is ES_NUMBER allow users to key in only numeric values*/
3230 if( (es->style & ES_NUMBER) && !( c >= '0' && c <= '9') )
3231 break;
3232
3233 if (!(es->style & ES_READONLY) && (c >= ' ') && (c != 127)) {
3234 WCHAR str[2];
3235 str[0] = c;
3236 str[1] = '\0';
3237 EDIT_EM_ReplaceSel(es, TRUE, str, TRUE, TRUE);
3238 }
3239 break;
3240 }
3241 return 1;
3242 }
3243
3244
3245 /*********************************************************************
3246 *
3247 * WM_COMMAND
3248 *
3249 */
3250 static void EDIT_WM_Command(EDITSTATE *es, INT code, INT id, HWND control)
3251 {
3252 if (code || control)
3253 return;
3254
3255 switch (id) {
3256 case EM_UNDO:
3257 SendMessageW(es->hwndSelf, WM_UNDO, 0, 0);
3258 break;
3259 case WM_CUT:
3260 SendMessageW(es->hwndSelf, WM_CUT, 0, 0);
3261 break;
3262 case WM_COPY:
3263 SendMessageW(es->hwndSelf, WM_COPY, 0, 0);
3264 break;
3265 case WM_PASTE:
3266 SendMessageW(es->hwndSelf, WM_PASTE, 0, 0);
3267 break;
3268 case WM_CLEAR:
3269 SendMessageW(es->hwndSelf, WM_CLEAR, 0, 0);
3270 break;
3271 case EM_SETSEL:
3272 EDIT_EM_SetSel(es, 0, (UINT)-1, FALSE);
3273 EDIT_EM_ScrollCaret(es);
3274 break;
3275 default:
3276 ERR("unknown menu item, please report\n");
3277 break;
3278 }
3279 }
3280
3281
3282 /*********************************************************************
3283 *
3284 * WM_CONTEXTMENU
3285 *
3286 * Note: the resource files resource/sysres_??.rc cannot define a
3287 * single popup menu. Hence we use a (dummy) menubar
3288 * containing the single popup menu as its first item.
3289 *
3290 * FIXME: the message identifiers have been chosen arbitrarily,
3291 * hence we use MF_BYPOSITION.
3292 * We might as well use the "real" values (anybody knows ?)
3293 * The menu definition is in resources/sysres_??.rc.
3294 * Once these are OK, we better use MF_BYCOMMAND here
3295 * (as we do in EDIT_WM_Command()).
3296 *
3297 */
3298 static void EDIT_WM_ContextMenu(EDITSTATE *es, INT x, INT y)
3299 {
3300 HMENU menu = LoadMenuA(user32_module, "EDITMENU");
3301 HMENU popup = GetSubMenu(menu, 0);
3302 UINT start = es->selection_start;
3303 UINT end = es->selection_end;
3304
3305 ORDER_UINT(start, end);
3306
3307 /* undo */
3308 EnableMenuItem(popup, 0, MF_BYPOSITION | (EDIT_EM_CanUndo(es) && !(es->style & ES_READONLY) ? MF_ENABLED : MF_GRAYED));
3309 /* cut */
3310 EnableMenuItem(popup, 2, MF_BYPOSITION | ((end - start) && !(es->style & ES_PASSWORD) && !(es->style & ES_READONLY) ? MF_ENABLED : MF_GRAYED));
3311 /* copy */
3312 EnableMenuItem(popup, 3, MF_BYPOSITION | ((end - start) && !(es->style & ES_PASSWORD) ? MF_ENABLED : MF_GRAYED));
3313 /* paste */
3314 EnableMenuItem(popup, 4, MF_BYPOSITION | (IsClipboardFormatAvailable(CF_UNICODETEXT) && !(es->style & ES_READONLY) ? MF_ENABLED : MF_GRAYED));
3315 /* delete */
3316 EnableMenuItem(popup, 5, MF_BYPOSITION | ((end - start) && !(es->style & ES_READONLY) ? MF_ENABLED : MF_GRAYED));
3317 /* select all */
3318 EnableMenuItem(popup, 7, MF_BYPOSITION | (start || (end != get_text_length(es)) ? MF_ENABLED : MF_GRAYED));
3319
3320 if (x == -1 && y == -1) /* passed via VK_APPS press/release */
3321 {
3322 RECT rc;
3323 /* Windows places the menu at the edit's center in this case */
3324 WIN_GetRectangles( es->hwndSelf, COORDS_SCREEN, NULL, &rc );
3325 x = rc.left + (rc.right - rc.left) / 2;
3326 y = rc.top + (rc.bottom - rc.top) / 2;
3327 }
3328
3329 if (!(es->flags & EF_FOCUSED))
3330 SetFocus(es->hwndSelf);
3331
3332 TrackPopupMenu(popup, TPM_LEFTALIGN | TPM_RIGHTBUTTON, x, y, 0, es->hwndSelf, NULL);
3333 DestroyMenu(menu);
3334 }
3335
3336
3337 /*********************************************************************
3338 *
3339 * WM_GETTEXT
3340 *
3341 */
3342 static INT EDIT_WM_GetText(const EDITSTATE *es, INT count, LPWSTR dst, BOOL unicode)
3343 {
3344 if(!count) return 0;
3345
3346 if(unicode)
3347 {
3348 lstrcpynW(dst, es->text, count);
3349 return strlenW(dst);
3350 }
3351 else
3352 {
3353 LPSTR textA = (LPSTR)dst;
3354 if (!WideCharToMultiByte(CP_ACP, 0, es->text, -1, textA, count, NULL, NULL))
3355 textA[count - 1] = 0; /* ensure 0 termination */
3356 return strlen(textA);
3357 }
3358 }
3359
3360 /*********************************************************************
3361 *
3362 * EDIT_CheckCombo
3363 *
3364 */
3365 static BOOL EDIT_CheckCombo(EDITSTATE *es, UINT msg, INT key)
3366 {
3367 HWND hLBox = es->hwndListBox;
3368 HWND hCombo;
3369 BOOL bDropped;
3370 int nEUI;
3371
3372 if (!hLBox)
3373 return FALSE;
3374
3375 hCombo = GetParent(es->hwndSelf);
3376 bDropped = TRUE;
3377 nEUI = 0;
3378
3379 TRACE_(combo)("[%p]: handling msg %x (%x)\n", es->hwndSelf, msg, key);
3380
3381 if (key == VK_UP || key == VK_DOWN)
3382 {
3383 if (SendMessageW(hCombo, CB_GETEXTENDEDUI, 0, 0))
3384 nEUI = 1;
3385
3386 if (msg == WM_KEYDOWN || nEUI)
3387 bDropped = (BOOL)SendMessageW(hCombo, CB_GETDROPPEDSTATE, 0, 0);
3388 }
3389
3390 switch (msg)
3391 {
3392 case WM_KEYDOWN:
3393 if (!bDropped && nEUI && (key == VK_UP || key == VK_DOWN))
3394 {
3395 /* make sure ComboLBox pops up */
3396 SendMessageW(hCombo, CB_SETEXTENDEDUI, FALSE, 0);
3397 key = VK_F4;
3398 nEUI = 2;
3399 }
3400
3401 SendMessageW(hLBox, WM_KEYDOWN, key, 0);
3402 break;
3403
3404 case WM_SYSKEYDOWN: /* Handle Alt+up/down arrows */
3405 if (nEUI)
3406 SendMessageW(hCombo, CB_SHOWDROPDOWN, !bDropped, 0);
3407 else
3408 SendMessageW(hLBox, WM_KEYDOWN, VK_F4, 0);
3409 break;
3410 }
3411
3412 if(nEUI == 2)
3413 SendMessageW(hCombo, CB_SETEXTENDEDUI, TRUE, 0);
3414
3415 return TRUE;
3416 }
3417
3418
3419 /*********************************************************************
3420 *
3421 * WM_KEYDOWN
3422 *
3423 * Handling of special keys that don't produce a WM_CHAR
3424 * (i.e. non-printable keys) & Backspace & Delete
3425 *
3426 */
3427 static LRESULT EDIT_WM_KeyDown(EDITSTATE *es, INT key)
3428 {
3429 BOOL shift;
3430 BOOL control;
3431
3432 if (GetKeyState(VK_MENU) & 0x8000)
3433 return 0;
3434
3435 shift = GetKeyState(VK_SHIFT) & 0x8000;
3436 control = GetKeyState(VK_CONTROL) & 0x8000;
3437
3438 switch (key) {
3439 case VK_F4:
3440 case VK_UP:
3441 if (EDIT_CheckCombo(es, WM_KEYDOWN, key) || key == VK_F4)
3442 break;
3443
3444 /* fall through */
3445 case VK_LEFT:
3446 if ((es->style & ES_MULTILINE) && (key == VK_UP))
3447 EDIT_MoveUp_ML(es, shift);
3448 else
3449 if (control)
3450 EDIT_MoveWordBackward(es, shift);
3451 else
3452 EDIT_MoveBackward(es, shift);
3453 break;
3454 case VK_DOWN:
3455 if (EDIT_CheckCombo(es, WM_KEYDOWN, key))
3456 break;
3457 /* fall through */
3458 case VK_RIGHT:
3459 if ((es->style & ES_MULTILINE) && (key == VK_DOWN))
3460 EDIT_MoveDown_ML(es, shift);
3461 else if (control)
3462 EDIT_MoveWordForward(es, shift);
3463 else
3464 EDIT_MoveForward(es, shift);
3465 break;
3466 case VK_HOME:
3467 EDIT_MoveHome(es, shift, control);
3468 break;
3469 case VK_END:
3470 EDIT_MoveEnd(es, shift, control);
3471 break;
3472 case VK_PRIOR:
3473 if (es->style & ES_MULTILINE)
3474 EDIT_MovePageUp_ML(es, shift);
3475 else
3476 EDIT_CheckCombo(es, WM_KEYDOWN, key);
3477 break;
3478 case VK_NEXT:
3479 if (es->style & ES_MULTILINE)
3480 EDIT_MovePageDown_ML(es, shift);
3481 else
3482 EDIT_CheckCombo(es, WM_KEYDOWN, key);
3483 break;
3484 case VK_DELETE:
3485 if (!(es->style & ES_READONLY) && !(shift && control)) {
3486 if (es->selection_start != es->selection_end) {
3487 if (shift)
3488 EDIT_WM_Cut(es);
3489 else
3490 EDIT_WM_Clear(es);
3491 } else {
3492 if (shift) {
3493 /* delete character left of caret */
3494 EDIT_EM_SetSel(es, (UINT)-1, 0, FALSE);
3495 EDIT_MoveBackward(es, TRUE);
3496 EDIT_WM_Clear(es);
3497 } else if (control) {
3498 /* delete to end of line */
3499 EDIT_EM_SetSel(es, (UINT)-1, 0, FALSE);
3500 EDIT_MoveEnd(es, TRUE, FALSE);
3501 EDIT_WM_Clear(es);
3502 } else {
3503 /* delete character right of caret */
3504 EDIT_EM_SetSel(es, (UINT)-1, 0, FALSE);
3505 EDIT_MoveForward(es, TRUE);
3506 EDIT_WM_Clear(es);
3507 }
3508 }
3509 }
3510 break;
3511 case VK_INSERT:
3512 if (shift) {
3513 if (!(es->style & ES_READONLY))
3514 EDIT_WM_Paste(es);
3515 } else if (control)
3516 EDIT_WM_Copy(es);
3517 break;
3518 case VK_RETURN:
3519 /* If the edit doesn't want the return send a message to the default object */
3520 if(!(es->style & ES_MULTILINE) || !(es->style & ES_WANTRETURN))
3521 {
3522 DWORD dw;
3523
3524 if (!EDIT_IsInsideDialog(es)) break;
3525 if (control) break;
3526 dw = SendMessageW(es->hwndParent, DM_GETDEFID, 0, 0);
3527 if (HIWORD(dw) == DC_HASDEFID)
3528 {
3529 HWND hwDefCtrl = GetDlgItem(es->hwndParent, LOWORD(dw));
3530 if (hwDefCtrl)
3531 {
3532 SendMessageW(es->hwndParent, WM_NEXTDLGCTL, (WPARAM)hwDefCtrl, TRUE);
3533 PostMessageW(hwDefCtrl, WM_KEYDOWN, VK_RETURN, 0);
3534 }
3535 }
3536 }
3537 break;
3538 case VK_ESCAPE:
3539 if ((es->style & ES_MULTILINE) && EDIT_IsInsideDialog(es))
3540 PostMessageW(es->hwndParent, WM_CLOSE, 0, 0);
3541 break;
3542 case VK_TAB:
3543 if ((es->style & ES_MULTILINE) && EDIT_IsInsideDialog(es))
3544 SendMessageW(es->hwndParent, WM_NEXTDLGCTL, shift, 0);
3545 break;
3546 }
3547 return TRUE;
3548 }
3549
3550
3551 /*********************************************************************
3552 *
3553 * WM_KILLFOCUS
3554 *
3555 */
3556 static LRESULT EDIT_WM_KillFocus(EDITSTATE *es)
3557 {
3558 es->flags &= ~EF_FOCUSED;
3559 DestroyCaret();
3560 if(!(es->style & ES_NOHIDESEL))
3561 EDIT_InvalidateText(es, es->selection_start, es->selection_end);
3562 EDIT_NOTIFY_PARENT(es, EN_KILLFOCUS);
3563 /* throw away left over scroll when we lose focus */
3564 es->wheelDeltaRemainder = 0;
3565 return 0;
3566 }
3567
3568
3569 /*********************************************************************
3570 *
3571 * WM_LBUTTONDBLCLK
3572 *
3573 * The caret position has been set on the WM_LBUTTONDOWN message
3574 *
3575 */
3576 static LRESULT EDIT_WM_LButtonDblClk(EDITSTATE *es)
3577 {
3578 INT s;
3579 INT e = es->selection_end;
3580 INT l;
3581 INT li;
3582 INT ll;
3583
3584 es->bCaptureState = TRUE;
3585 SetCapture(es->hwndSelf);
3586
3587 l = EDIT_EM_LineFromChar(es, e);
3588 li = EDIT_EM_LineIndex(es, l);
3589 ll = EDIT_EM_LineLength(es, e);
3590 s = li + EDIT_CallWordBreakProc(es, li, e - li, ll, WB_LEFT);
3591 e = li + EDIT_CallWordBreakProc(es, li, e - li, ll, WB_RIGHT);
3592 EDIT_EM_SetSel(es, s, e, FALSE);
3593 EDIT_EM_ScrollCaret(es);
3594 es->region_posx = es->region_posy = 0;
3595 SetTimer(es->hwndSelf, 0, 100, NULL);
3596 return 0;
3597 }
3598
3599
3600 /*********************************************************************
3601 *
3602 * WM_LBUTTONDOWN
3603 *
3604 */
3605 static LRESULT EDIT_WM_LButtonDown(EDITSTATE *es, DWORD keys, INT x, INT y)
3606 {
3607 INT e;
3608 BOOL after_wrap;
3609
3610 es->bCaptureState = TRUE;
3611 SetCapture(es->hwndSelf);
3612 EDIT_ConfinePoint(es, &x, &y);
3613 e = EDIT_CharFromPos(es, x, y, &after_wrap);
3614 EDIT_EM_SetSel(es, (keys & MK_SHIFT) ? es->selection_start : e, e, after_wrap);
3615 EDIT_EM_ScrollCaret(es);
3616 es->region_posx = es->region_posy = 0;
3617 SetTimer(es->hwndSelf, 0, 100, NULL);
3618
3619 if (!(es->flags & EF_FOCUSED))
3620 SetFocus(es->hwndSelf);
3621
3622 return 0;
3623 }
3624
3625
3626 /*********************************************************************
3627 *
3628 * WM_LBUTTONUP
3629 *
3630 */
3631 static LRESULT EDIT_WM_LButtonUp(EDITSTATE *es)
3632 {
3633 if (es->bCaptureState) {
3634 KillTimer(es->hwndSelf, 0);
3635 if (GetCapture() == es->hwndSelf) ReleaseCapture();
3636 }
3637 es->bCaptureState = FALSE;
3638 return 0;
3639 }
3640
3641
3642 /*********************************************************************
3643 *
3644 * WM_MBUTTONDOWN
3645 *
3646 */
3647 static LRESULT EDIT_WM_MButtonDown(EDITSTATE *es)
3648 {
3649 SendMessageW(es->hwndSelf, WM_PASTE, 0, 0);
3650 return 0;
3651 }
3652
3653
3654 /*********************************************************************
3655 *
3656 * WM_MOUSEMOVE
3657 *
3658 */
3659 static LRESULT EDIT_WM_MouseMove(EDITSTATE *es, INT x, INT y)
3660 {
3661 INT e;
3662 BOOL after_wrap;
3663 INT prex, prey;
3664
3665 /* If the mouse has been captured by process other than the edit control itself,
3666 * the windows edit controls will not select the strings with mouse move.
3667 */
3668 if (!es->bCaptureState || GetCapture() != es->hwndSelf)
3669 return 0;
3670
3671 /*
3672 * FIXME: gotta do some scrolling if outside client
3673 * area. Maybe reset the timer ?
3674 */
3675 prex = x; prey = y;
3676 EDIT_ConfinePoint(es, &x, &y);
3677 es->region_posx = (prex < x) ? -1 : ((prex > x) ? 1 : 0);
3678 es->region_posy = (prey < y) ? -1 : ((prey > y) ? 1 : 0);
3679 e = EDIT_CharFromPos(es, x, y, &after_wrap);
3680 EDIT_EM_SetSel(es, es->selection_start, e, after_wrap);
3681 EDIT_SetCaretPos(es,es->selection_end,es->flags & EF_AFTER_WRAP);
3682 return 0;
3683 }
3684
3685
3686 /*********************************************************************
3687 *
3688 * WM_PAINT
3689 *
3690 */
3691 static void EDIT_WM_Paint(EDITSTATE *es, HDC hdc)
3692 {
3693 PAINTSTRUCT ps;
3694 INT i;
3695 HDC dc;
3696 HFONT old_font = 0;
3697 RECT rc;
3698 RECT rcClient;
3699 RECT rcLine;
3700 RECT rcRgn;
3701 HBRUSH brush;
3702 HBRUSH old_brush;
3703 INT bw, bh;
3704 BOOL rev = es->bEnableState &&
3705 ((es->flags & EF_FOCUSED) ||
3706 (es->style & ES_NOHIDESEL));
3707 dc = hdc ? hdc : BeginPaint(es->hwndSelf, &ps);
3708
3709 /* The dc we use for calculating may not be the one we paint into.
3710 This is the safest action. */
3711 EDIT_InvalidateUniscribeData(es);
3712 GetClientRect(es->hwndSelf, &rcClient);
3713
3714 /* get the background brush */
3715 brush = EDIT_NotifyCtlColor(es, dc);
3716
3717 /* paint the border and the background */
3718 IntersectClipRect(dc, rcClient.left, rcClient.top, rcClient.right, rcClient.bottom);
3719
3720 if(es->style & WS_BORDER) {
3721 bw = GetSystemMetrics(SM_CXBORDER);
3722 bh = GetSystemMetrics(SM_CYBORDER);
3723 rc = rcClient;
3724 if(es->style & ES_MULTILINE) {
3725 if(es->style & WS_HSCROLL) rc.bottom+=bh;
3726 if(es->style & WS_VSCROLL) rc.right+=bw;
3727 }
3728
3729 /* Draw the frame. Same code as in nonclient.c */
3730 old_brush = SelectObject(dc, GetSysColorBrush(COLOR_WINDOWFRAME));
3731 PatBlt(dc, rc.left, rc.top, rc.right - rc.left, bh, PATCOPY);
3732 PatBlt(dc, rc.left, rc.top, bw, rc.bottom - rc.top, PATCOPY);
3733 PatBlt(dc, rc.left, rc.bottom - 1, rc.right - rc.left, -bw, PATCOPY);
3734 PatBlt(dc, rc.right - 1, rc.top, -bw, rc.bottom - rc.top, PATCOPY);
3735 SelectObject(dc, old_brush);
3736
3737 /* Keep the border clean */
3738 IntersectClipRect(dc, rc.left+bw, rc.top+bh,
3739 max(rc.right-bw, rc.left+bw), max(rc.bottom-bh, rc.top+bh));
3740 }
3741
3742 GetClipBox(dc, &rc);
3743 FillRect(dc, &rc, brush);
3744
3745 IntersectClipRect(dc, es->format_rect.left,
3746 es->format_rect.top,
3747 es->format_rect.right,
3748 es->format_rect.bottom);
3749 if (es->style & ES_MULTILINE) {
3750 rc = rcClient;
3751 IntersectClipRect(dc, rc.left, rc.top, rc.right, rc.bottom);
3752 }
3753 if (es->font)
3754 old_font = SelectObject(dc, es->font);
3755
3756 if (!es->bEnableState)
3757 SetTextColor(dc, GetSysColor(COLOR_GRAYTEXT));
3758 GetClipBox(dc, &rcRgn);
3759 if (es->style & ES_MULTILINE) {
3760 INT vlc = get_vertical_line_count(es);
3761 for (i = es->y_offset ; i <= min(es->y_offset + vlc, es->y_offset + es->line_count - 1) ; i++) {
3762 EDIT_UpdateUniscribeData(es, dc, i);
3763 EDIT_GetLineRect(es, i, 0, -1, &rcLine);
3764 if (IntersectRect(&rc, &rcRgn, &rcLine))
3765 EDIT_PaintLine(es, dc, i, rev);
3766 }
3767 } else {
3768 EDIT_UpdateUniscribeData(es, dc, 0);
3769 EDIT_GetLineRect(es, 0, 0, -1, &rcLine);
3770 if (IntersectRect(&rc, &rcRgn, &rcLine))
3771 EDIT_PaintLine(es, dc, 0, rev);
3772 }
3773 if (es->font)
3774 SelectObject(dc, old_font);
3775
3776 if (!hdc)
3777 EndPaint(es->hwndSelf, &ps);
3778 }
3779
3780
3781 /*********************************************************************
3782 *
3783 * WM_SETFOCUS
3784 *
3785 */
3786 static void EDIT_WM_SetFocus(EDITSTATE *es)
3787 {
3788 es->flags |= EF_FOCUSED;
3789
3790 if (!(es->style & ES_NOHIDESEL))
3791 EDIT_InvalidateText(es, es->selection_start, es->selection_end);
3792
3793 /* single line edit updates itself */
3794 if (!(es->style & ES_MULTILINE))
3795 {
3796 HDC hdc = GetDC(es->hwndSelf);
3797 EDIT_WM_Paint(es, hdc);
3798 ReleaseDC(es->hwndSelf, hdc);
3799 }
3800
3801 CreateCaret(es->hwndSelf, 0, 1, es->line_height);
3802 EDIT_SetCaretPos(es, es->selection_end,
3803 es->flags & EF_AFTER_WRAP);
3804 ShowCaret(es->hwndSelf);
3805 EDIT_NOTIFY_PARENT(es, EN_SETFOCUS);
3806 }
3807
3808
3809 /*********************************************************************
3810 *
3811 * WM_SETFONT
3812 *
3813 * With Win95 look the margins are set to default font value unless
3814 * the system font (font == 0) is being set, in which case they are left
3815 * unchanged.
3816 *
3817 */
3818 static void EDIT_WM_SetFont(EDITSTATE *es, HFONT font, BOOL redraw)
3819 {
3820 TEXTMETRICW tm;
3821 HDC dc;
3822 HFONT old_font = 0;
3823 RECT clientRect;
3824
3825 es->font = font;
3826 EDIT_InvalidateUniscribeData(es);
3827 dc = GetDC(es->hwndSelf);
3828 if (font)
3829 old_font = SelectObject(dc, font);
3830 GetTextMetricsW(dc, &tm);
3831 es->line_height = tm.tmHeight;
3832 es->char_width = tm.tmAveCharWidth;
3833 if (font)
3834 SelectObject(dc, old_font);
3835 ReleaseDC(es->hwndSelf, dc);
3836
3837 /* Reset the format rect and the margins */
3838 GetClientRect(es->hwndSelf, &clientRect);
3839 EDIT_SetRectNP(es, &clientRect);
3840 EDIT_EM_SetMargins(es, EC_LEFTMARGIN | EC_RIGHTMARGIN,
3841 EC_USEFONTINFO, EC_USEFONTINFO, FALSE);
3842
3843 if (es->style & ES_MULTILINE)
3844 EDIT_BuildLineDefs_ML(es, 0, get_text_length(es), 0, NULL);
3845 else
3846 EDIT_CalcLineWidth_SL(es);
3847
3848 if (redraw)
3849 EDIT_UpdateText(es, NULL, TRUE);
3850 if (es->flags & EF_FOCUSED) {
3851 DestroyCaret();
3852 CreateCaret(es->hwndSelf, 0, 1, es->line_height);
3853 EDIT_SetCaretPos(es, es->selection_end,
3854 es->flags & EF_AFTER_WRAP);
3855 ShowCaret(es->hwndSelf);
3856 }
3857 }
3858
3859
3860 /*********************************************************************
3861 *
3862 * WM_SETTEXT
3863 *
3864 * NOTES
3865 * For multiline controls (ES_MULTILINE), reception of WM_SETTEXT triggers:
3866 * The modified flag is reset. No notifications are sent.
3867 *
3868 * For single-line controls, reception of WM_SETTEXT triggers:
3869 * The modified flag is reset. EN_UPDATE and EN_CHANGE notifications are sent.
3870 *
3871 */
3872 static void EDIT_WM_SetText(EDITSTATE *es, LPCWSTR text, BOOL unicode)
3873 {
3874 LPWSTR textW = NULL;
3875 if (!unicode && text)
3876 {
3877 LPCSTR textA = (LPCSTR)text;
3878 INT countW = MultiByteToWideChar(CP_ACP, 0, textA, -1, NULL, 0);
3879 textW = HeapAlloc(GetProcessHeap(), 0, countW * sizeof(WCHAR));
3880 if (textW)
3881 MultiByteToWideChar(CP_ACP, 0, textA, -1, textW, countW);
3882 text = textW;
3883 }
3884
3885 if (es->flags & EF_UPDATE)
3886 /* fixed this bug once; complain if we see it about to happen again. */
3887 ERR("SetSel may generate UPDATE message whose handler may reset "
3888 "selection.\n");
3889
3890 EDIT_EM_SetSel(es, 0, (UINT)-1, FALSE);
3891 if (text)
3892 {
3893 TRACE("%s\n", debugstr_w(text));
3894 EDIT_EM_ReplaceSel(es, FALSE, text, FALSE, FALSE);
3895 if(!unicode)
3896 HeapFree(GetProcessHeap(), 0, textW);
3897 }
3898 else
3899 {
3900 TRACE("<NULL>\n");
3901 EDIT_EM_ReplaceSel(es, FALSE, empty_stringW, FALSE, FALSE);
3902 }
3903 es->x_offset = 0;
3904 es->flags &= ~EF_MODIFIED;
3905 EDIT_EM_SetSel(es, 0, 0, FALSE);
3906
3907 /* Send the notification after the selection start and end have been set
3908 * edit control doesn't send notification on WM_SETTEXT
3909 * if it is multiline, or it is part of combobox
3910 */
3911 if( !((es->style & ES_MULTILINE) || es->hwndListBox))
3912 {
3913 EDIT_NOTIFY_PARENT(es, EN_UPDATE);
3914 EDIT_NOTIFY_PARENT(es, EN_CHANGE);
3915 }
3916 EDIT_EM_ScrollCaret(es);
3917 EDIT_UpdateScrollInfo(es);
3918 EDIT_InvalidateUniscribeData(es);
3919 }
3920
3921
3922 /*********************************************************************
3923 *
3924 * WM_SIZE
3925 *
3926 */
3927 static void EDIT_WM_Size(EDITSTATE *es, UINT action, INT width, INT height)
3928 {
3929 if ((action == SIZE_MAXIMIZED) || (action == SIZE_RESTORED)) {
3930 RECT rc;
3931 TRACE("width = %d, height = %d\n", width, height);
3932 SetRect(&rc, 0, 0, width, height);
3933 EDIT_SetRectNP(es, &rc);
3934 EDIT_UpdateText(es, NULL, TRUE);
3935 }
3936 }
3937
3938
3939 /*********************************************************************
3940 *
3941 * WM_STYLECHANGED
3942 *
3943 * This message is sent by SetWindowLong on having changed either the Style
3944 * or the extended style.
3945 *
3946 * We ensure that the window's version of the styles and the EDITSTATE's agree.
3947 *
3948 * See also EDIT_WM_NCCreate
3949 *
3950 * It appears that the Windows version of the edit control allows the style
3951 * (as retrieved by GetWindowLong) to be any value and maintains an internal
3952 * style variable which will generally be different. In this function we
3953 * update the internal style based on what changed in the externally visible
3954 * style.
3955 *
3956 * Much of this content as based upon the MSDN, especially:
3957 * Platform SDK Documentation -> User Interface Services ->
3958 * Windows User Interface -> Edit Controls -> Edit Control Reference ->
3959 * Edit Control Styles
3960 */
3961 static LRESULT EDIT_WM_StyleChanged ( EDITSTATE *es, WPARAM which, const STYLESTRUCT *style)
3962 {
3963 if (GWL_STYLE == which) {
3964 DWORD style_change_mask;
3965 DWORD new_style;
3966 /* Only a subset of changes can be applied after the control
3967 * has been created.
3968 */
3969 style_change_mask = ES_UPPERCASE | ES_LOWERCASE |
3970 ES_NUMBER;
3971 if (es->style & ES_MULTILINE)
3972 style_change_mask |= ES_WANTRETURN;
3973
3974 new_style = style->styleNew & style_change_mask;
3975
3976 /* Number overrides lowercase overrides uppercase (at least it
3977 * does in Win95). However I'll bet that ES_NUMBER would be
3978 * invalid under Win 3.1.
3979 */
3980 if (new_style & ES_NUMBER) {
3981 ; /* do not override the ES_NUMBER */
3982 } else if (new_style & ES_LOWERCASE) {
3983 new_style &= ~ES_UPPERCASE;
3984 }
3985
3986 es->style = (es->style & ~style_change_mask) | new_style;
3987 } else if (GWL_EXSTYLE == which) {
3988 ; /* FIXME - what is needed here */
3989 } else {
3990 WARN ("Invalid style change %ld\n",which);
3991 }
3992
3993 return 0;
3994 }
3995
3996 /*********************************************************************
3997 *
3998 * WM_SYSKEYDOWN
3999 *
4000 */
4001 static LRESULT EDIT_WM_SysKeyDown(EDITSTATE *es, INT key, DWORD key_data)
4002 {
4003 if ((key == VK_BACK) && (key_data & 0x2000)) {
4004 if (EDIT_EM_CanUndo(es))
4005 EDIT_EM_Undo(es);
4006 return 0;
4007 } else if (key == VK_UP || key == VK_DOWN) {
4008 if (EDIT_CheckCombo(es, WM_SYSKEYDOWN, key))
4009 return 0;
4010 }
4011 return DefWindowProcW(es->hwndSelf, WM_SYSKEYDOWN, key, key_data);
4012 }
4013
4014
4015 /*********************************************************************
4016 *
4017 * WM_TIMER
4018 *
4019 */
4020 static void EDIT_WM_Timer(EDITSTATE *es)
4021 {
4022 if (es->region_posx < 0) {
4023 EDIT_MoveBackward(es, TRUE);
4024 } else if (es->region_posx > 0) {
4025 EDIT_MoveForward(es, TRUE);
4026 }
4027 /*
4028 * FIXME: gotta do some vertical scrolling here, like
4029 * EDIT_EM_LineScroll(hwnd, 0, 1);
4030 */
4031 }
4032
4033 /*********************************************************************
4034 *
4035 * WM_HSCROLL
4036 *
4037 */
4038 static LRESULT EDIT_WM_HScroll(EDITSTATE *es, INT action, INT pos)
4039 {
4040 INT dx;
4041 INT fw;
4042
4043 if (!(es->style & ES_MULTILINE))
4044 return 0;
4045
4046 if (!(es->style & ES_AUTOHSCROLL))
4047 return 0;
4048
4049 dx = 0;
4050 fw = es->format_rect.right - es->format_rect.left;
4051 switch (action) {
4052 case SB_LINELEFT:
4053 TRACE("SB_LINELEFT\n");
4054 if (es->x_offset)
4055 dx = -es->char_width;
4056 break;
4057 case SB_LINERIGHT:
4058 TRACE("SB_LINERIGHT\n");
4059 if (es->x_offset < es->text_width)
4060 dx = es->char_width;
4061 break;
4062 case SB_PAGELEFT:
4063 TRACE("SB_PAGELEFT\n");
4064 if (es->x_offset)
4065 dx = -fw / HSCROLL_FRACTION / es->char_width * es->char_width;
4066 break;
4067 case SB_PAGERIGHT:
4068 TRACE("SB_PAGERIGHT\n");
4069 if (es->x_offset < es->text_width)
4070 dx = fw / HSCROLL_FRACTION / es->char_width * es->char_width;
4071 break;
4072 case SB_LEFT:
4073 TRACE("SB_LEFT\n");
4074 if (es->x_offset)
4075 dx = -es->x_offset;
4076 break;
4077 case SB_RIGHT:
4078 TRACE("SB_RIGHT\n");
4079 if (es->x_offset < es->text_width)
4080 dx = es->text_width - es->x_offset;
4081 break;
4082 case SB_THUMBTRACK:
4083 TRACE("SB_THUMBTRACK %d\n", pos);
4084 es->flags |= EF_HSCROLL_TRACK;
4085 if(es->style & WS_HSCROLL)
4086 dx = pos - es->x_offset;
4087 else
4088 {
4089 INT fw, new_x;
4090 /* Sanity check */
4091 if(pos < 0 || pos > 100) return 0;
4092 /* Assume default scroll range 0-100 */
4093 fw = es->format_rect.right - es->format_rect.left;
4094 new_x = pos * (es->text_width - fw) / 100;
4095 dx = es->text_width ? (new_x - es->x_offset) : 0;
4096 }
4097 break;
4098 case SB_THUMBPOSITION:
4099 TRACE("SB_THUMBPOSITION %d\n", pos);
4100 es->flags &= ~EF_HSCROLL_TRACK;
4101 if(GetWindowLongW( es->hwndSelf, GWL_STYLE ) & WS_HSCROLL)
4102 dx = pos - es->x_offset;
4103 else
4104 {
4105 INT fw, new_x;
4106 /* Sanity check */
4107 if(pos < 0 || pos > 100) return 0;
4108 /* Assume default scroll range 0-100 */
4109 fw = es->format_rect.right - es->format_rect.left;
4110 new_x = pos * (es->text_width - fw) / 100;
4111 dx = es->text_width ? (new_x - es->x_offset) : 0;
4112 }
4113 if (!dx) {
4114 /* force scroll info update */
4115 EDIT_UpdateScrollInfo(es);
4116 EDIT_NOTIFY_PARENT(es, EN_HSCROLL);
4117 }
4118 break;
4119 case SB_ENDSCROLL:
4120 TRACE("SB_ENDSCROLL\n");
4121 break;
4122 /*
4123 * FIXME : the next two are undocumented !
4124 * Are we doing the right thing ?
4125 * At least Win 3.1 Notepad makes use of EM_GETTHUMB this way,
4126 * although it's also a regular control message.
4127 */
4128 case EM_GETTHUMB: /* this one is used by NT notepad */
4129 {
4130 LRESULT ret;
4131 if(GetWindowLongW( es->hwndSelf, GWL_STYLE ) & WS_HSCROLL)
4132 ret = GetScrollPos(es->hwndSelf, SB_HORZ);
4133 else
4134 {
4135 /* Assume default scroll range 0-100 */
4136 INT fw = es->format_rect.right - es->format_rect.left;
4137 ret = es->text_width ? es->x_offset * 100 / (es->text_width - fw) : 0;
4138 }
4139 TRACE("EM_GETTHUMB: returning %ld\n", ret);
4140 return ret;
4141 }
4142 case EM_LINESCROLL:
4143 TRACE("EM_LINESCROLL16\n");
4144 dx = pos;
4145 break;
4146
4147 default:
4148 ERR("undocumented WM_HSCROLL action %d (0x%04x), please report\n",
4149 action, action);
4150 return 0;
4151 }
4152 if (dx)
4153 {
4154 INT fw = es->format_rect.right - es->format_rect.left;
4155 /* check if we are going to move too far */
4156 if(es->x_offset + dx + fw > es->text_width)
4157 dx = es->text_width - fw - es->x_offset;
4158 if(dx)
4159 EDIT_EM_LineScroll_internal(es, dx, 0);
4160 }
4161 return 0;
4162 }
4163
4164
4165 /*********************************************************************
4166 *
4167 * WM_VSCROLL
4168 *
4169 */
4170 static LRESULT EDIT_WM_VScroll(EDITSTATE *es, INT action, INT pos)
4171 {
4172 INT dy;
4173
4174 if (!(es->style & ES_MULTILINE))
4175 return 0;
4176
4177 if (!(es->style & ES_AUTOVSCROLL))
4178 return 0;
4179
4180 dy = 0;
4181 switch (action) {
4182 case SB_LINEUP:
4183 case SB_LINEDOWN:
4184 case SB_PAGEUP:
4185 case SB_PAGEDOWN:
4186 TRACE("action %d (%s)\n", action, (action == SB_LINEUP ? "SB_LINEUP" :
4187 (action == SB_LINEDOWN ? "SB_LINEDOWN" :
4188 (action == SB_PAGEUP ? "SB_PAGEUP" :
4189 "SB_PAGEDOWN"))));
4190 EDIT_EM_Scroll(es, action);
4191 return 0;
4192 case SB_TOP:
4193 TRACE("SB_TOP\n");
4194 dy = -es->y_offset;
4195 break;
4196 case SB_BOTTOM:
4197 TRACE("SB_BOTTOM\n");
4198 dy = es->line_count - 1 - es->y_offset;
4199 break;
4200 case SB_THUMBTRACK:
4201 TRACE("SB_THUMBTRACK %d\n", pos);
4202 es->flags |= EF_VSCROLL_TRACK;
4203 if(es->style & WS_VSCROLL)
4204 dy = pos - es->y_offset;
4205 else
4206 {
4207 /* Assume default scroll range 0-100 */
4208 INT vlc, new_y;
4209 /* Sanity check */
4210 if(pos < 0 || pos > 100) return 0;
4211 vlc = get_vertical_line_count(es);
4212 new_y = pos * (es->line_count - vlc) / 100;
4213 dy = es->line_count ? (new_y - es->y_offset) : 0;
4214 TRACE("line_count=%d, y_offset=%d, pos=%d, dy = %d\n",
4215 es->line_count, es->y_offset, pos, dy);
4216 }
4217 break;
4218 case SB_THUMBPOSITION:
4219 TRACE("SB_THUMBPOSITION %d\n", pos);
4220 es->flags &= ~EF_VSCROLL_TRACK;
4221 if(es->style & WS_VSCROLL)
4222 dy = pos - es->y_offset;
4223 else
4224 {
4225 /* Assume default scroll range 0-100 */
4226 INT vlc, new_y;
4227 /* Sanity check */
4228 if(pos < 0 || pos > 100) return 0;
4229 vlc = get_vertical_line_count(es);
4230 new_y = pos * (es->line_count - vlc) / 100;
4231 dy = es->line_count ? (new_y - es->y_offset) : 0;
4232 TRACE("line_count=%d, y_offset=%d, pos=%d, dy = %d\n",
4233 es->line_count, es->y_offset, pos, dy);
4234 }
4235 if (!dy)
4236 {
4237 /* force scroll info update */
4238 EDIT_UpdateScrollInfo(es);
4239 EDIT_NOTIFY_PARENT(es, EN_VSCROLL);
4240 }
4241 break;
4242 case SB_ENDSCROLL:
4243 TRACE("SB_ENDSCROLL\n");
4244 break;
4245 /*
4246 * FIXME : the next two are undocumented !
4247 * Are we doing the right thing ?
4248 * At least Win 3.1 Notepad makes use of EM_GETTHUMB this way,
4249 * although it's also a regular control message.
4250 */
4251 case EM_GETTHUMB: /* this one is used by NT notepad */
4252 {
4253 LRESULT ret;
4254 if(GetWindowLongW( es->hwndSelf, GWL_STYLE ) & WS_VSCROLL)
4255 ret = GetScrollPos(es->hwndSelf, SB_VERT);
4256 else
4257 {
4258 /* Assume default scroll range 0-100 */
4259 INT vlc = get_vertical_line_count(es);
4260 ret = es->line_count ? es->y_offset * 100 / (es->line_count - vlc) : 0;
4261 }
4262 TRACE("EM_GETTHUMB: returning %ld\n", ret);
4263 return ret;
4264 }
4265 case EM_LINESCROLL:
4266 TRACE("EM_LINESCROLL %d\n", pos);
4267 dy = pos;
4268 break;
4269
4270 default:
4271 ERR("undocumented WM_VSCROLL action %d (0x%04x), please report\n",
4272 action, action);
4273 return 0;
4274 }
4275 if (dy)
4276 EDIT_EM_LineScroll(es, 0, dy);
4277 return 0;
4278 }
4279
4280 /*********************************************************************
4281 *
4282 * EM_GETTHUMB
4283 *
4284 * FIXME: is this right ? (or should it be only VSCROLL)
4285 * (and maybe only for edit controls that really have their
4286 * own scrollbars) (and maybe only for multiline controls ?)
4287 * All in all: very poorly documented
4288 *
4289 */
4290 static LRESULT EDIT_EM_GetThumb(EDITSTATE *es)
4291 {
4292 return MAKELONG(EDIT_WM_VScroll(es, EM_GETTHUMB, 0),
4293 EDIT_WM_HScroll(es, EM_GETTHUMB, 0));
4294 }
4295
4296
4297 /********************************************************************
4298 *
4299 * The Following code is to handle inline editing from IMEs
4300 */
4301
4302 static void EDIT_GetCompositionStr(HIMC hIMC, LPARAM CompFlag, EDITSTATE *es)
4303 {
4304 LONG buflen;
4305 LPWSTR lpCompStr = NULL;
4306 LPSTR lpCompStrAttr = NULL;
4307 DWORD dwBufLenAttr;
4308
4309 buflen = ImmGetCompositionStringW(hIMC, GCS_COMPSTR, NULL, 0);
4310
4311 if (buflen < 0)
4312 {
4313 return;
4314 }
4315
4316 lpCompStr = HeapAlloc(GetProcessHeap(),0,buflen + sizeof(WCHAR));
4317 if (!lpCompStr)
4318 {
4319 ERR("Unable to allocate IME CompositionString\n");
4320 return;
4321 }
4322
4323 if (buflen)
4324 ImmGetCompositionStringW(hIMC, GCS_COMPSTR, lpCompStr, buflen);
4325 lpCompStr[buflen/sizeof(WCHAR)] = 0;
4326
4327 if (CompFlag & GCS_COMPATTR)
4328 {
4329 /*
4330 * We do not use the attributes yet. it would tell us what characters
4331 * are in transition and which are converted or decided upon
4332 */
4333 dwBufLenAttr = ImmGetCompositionStringW(hIMC, GCS_COMPATTR, NULL, 0);
4334 if (dwBufLenAttr)
4335 {
4336 dwBufLenAttr ++;
4337 lpCompStrAttr = HeapAlloc(GetProcessHeap(),0,dwBufLenAttr+1);
4338 if (!lpCompStrAttr)
4339 {
4340 ERR("Unable to allocate IME Attribute String\n");
4341 HeapFree(GetProcessHeap(),0,lpCompStr);
4342 return;
4343 }
4344 ImmGetCompositionStringW(hIMC,GCS_COMPATTR, lpCompStrAttr,
4345 dwBufLenAttr);
4346 lpCompStrAttr[dwBufLenAttr] = 0;
4347 }
4348 else
4349 lpCompStrAttr = NULL;
4350 }
4351
4352 /* check for change in composition start */
4353 if (es->selection_end < es->composition_start)
4354 es->composition_start = es->selection_end;
4355
4356 /* replace existing selection string */
4357 es->selection_start = es->composition_start;
4358
4359 if (es->composition_len > 0)
4360 es->selection_end = es->composition_start + es->composition_len;
4361 else
4362 es->selection_end = es->selection_start;
4363
4364 EDIT_EM_ReplaceSel(es, FALSE, lpCompStr, TRUE, TRUE);
4365 es->composition_len = abs(es->composition_start - es->selection_end);
4366
4367 es->selection_start = es->composition_start;
4368 es->selection_end = es->selection_start + es->composition_len;
4369
4370 HeapFree(GetProcessHeap(),0,lpCompStrAttr);
4371 HeapFree(GetProcessHeap(),0,lpCompStr);
4372 }
4373
4374 static void EDIT_GetResultStr(HIMC hIMC, EDITSTATE *es)
4375 {
4376 LONG buflen;
4377 LPWSTR lpResultStr;
4378
4379 buflen = ImmGetCompositionStringW(hIMC, GCS_RESULTSTR, NULL, 0);
4380 if (buflen <= 0)
4381 {
4382 return;
4383 }
4384
4385 lpResultStr = HeapAlloc(GetProcessHeap(),0, buflen+sizeof(WCHAR));
4386 if (!lpResultStr)
4387 {
4388 ERR("Unable to alloc buffer for IME string\n");
4389 return;
4390 }
4391
4392 ImmGetCompositionStringW(hIMC, GCS_RESULTSTR, lpResultStr, buflen);
4393 lpResultStr[buflen/sizeof(WCHAR)] = 0;
4394
4395 /* check for change in composition start */
4396 if (es->selection_end < es->composition_start)
4397 es->composition_start = es->selection_end;
4398
4399 es->selection_start = es->composition_start;
4400 es->selection_end = es->composition_start + es->composition_len;
4401 EDIT_EM_ReplaceSel(es, TRUE, lpResultStr, TRUE, TRUE);
4402 es->composition_start = es->selection_end;
4403 es->composition_len = 0;
4404
4405 HeapFree(GetProcessHeap(),0,lpResultStr);
4406 }
4407
4408 static void EDIT_ImeComposition(HWND hwnd, LPARAM CompFlag, EDITSTATE *es)
4409 {
4410 HIMC hIMC;
4411 int cursor;
4412
4413 if (es->composition_len == 0 && es->selection_start != es->selection_end)
4414 {
4415 EDIT_EM_ReplaceSel(es, TRUE, empty_stringW, TRUE, TRUE);
4416 es->composition_start = es->selection_end;
4417 }
4418
4419 hIMC = ImmGetContext(hwnd);
4420 if (!hIMC)
4421 return;
4422
4423 if (CompFlag & GCS_RESULTSTR)
4424 {
4425 EDIT_GetResultStr(hIMC, es);
4426 cursor = 0;
4427 }
4428 else
4429 {
4430 if (CompFlag & GCS_COMPSTR)
4431 EDIT_GetCompositionStr(hIMC, CompFlag, es);
4432 cursor = ImmGetCompositionStringW(hIMC, GCS_CURSORPOS, 0, 0);
4433 }
4434 ImmReleaseContext(hwnd, hIMC);
4435 EDIT_SetCaretPos(es, es->selection_start + cursor, es->flags & EF_AFTER_WRAP);
4436 }
4437
4438
4439 /*********************************************************************
4440 *
4441 * WM_NCCREATE
4442 *
4443 * See also EDIT_WM_StyleChanged
4444 */
4445 static LRESULT EDIT_WM_NCCreate(HWND hwnd, LPCREATESTRUCTW lpcs, BOOL unicode)
4446 {
4447 EDITSTATE *es;
4448 UINT alloc_size;
4449
4450 TRACE("Creating %s edit control, style = %08x\n",
4451 unicode ? "Unicode" : "ANSI", lpcs->style);
4452
4453 if (!(es = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, sizeof(*es))))
4454 return FALSE;
4455 SetWindowLongPtrW( hwnd, 0, (LONG_PTR)es );
4456
4457 /*
4458 * Note: since the EDITSTATE has not been fully initialized yet,
4459 * we can't use any API calls that may send
4460 * WM_XXX messages before WM_NCCREATE is completed.
4461 */
4462
4463 es->is_unicode = unicode;
4464 es->style = lpcs->style;
4465
4466 es->bEnableState = !(es->style & WS_DISABLED);
4467
4468 es->hwndSelf = hwnd;
4469 /* Save parent, which will be notified by EN_* messages */
4470 es->hwndParent = lpcs->hwndParent;
4471
4472 if (es->style & ES_COMBO)
4473 es->hwndListBox = GetDlgItem(es->hwndParent, ID_CB_LISTBOX);
4474
4475 /* FIXME: should we handle changes to WS_EX_RIGHT style after creation? */
4476 if (lpcs->dwExStyle & WS_EX_RIGHT) es->style |= ES_RIGHT;
4477
4478 /* Number overrides lowercase overrides uppercase (at least it
4479 * does in Win95). However I'll bet that ES_NUMBER would be
4480 * invalid under Win 3.1.
4481 */
4482 if (es->style & ES_NUMBER) {
4483 ; /* do not override the ES_NUMBER */
4484 } else if (es->style & ES_LOWERCASE) {
4485 es->style &= ~ES_UPPERCASE;
4486 }
4487 if (es->style & ES_MULTILINE) {
4488 es->buffer_limit = BUFLIMIT_INITIAL;
4489 if (es->style & WS_VSCROLL)
4490 es->style |= ES_AUTOVSCROLL;
4491 if (es->style & WS_HSCROLL)
4492 es->style |= ES_AUTOHSCROLL;
4493 es->style &= ~ES_PASSWORD;
4494 if ((es->style & ES_CENTER) || (es->style & ES_RIGHT)) {
4495 /* Confirmed - RIGHT overrides CENTER */
4496 if (es->style & ES_RIGHT)
4497 es->style &= ~ES_CENTER;
4498 es->style &= ~WS_HSCROLL;
4499 es->style &= ~ES_AUTOHSCROLL;
4500 }
4501 } else {
4502 es->buffer_limit = BUFLIMIT_INITIAL;
4503 if ((es->style & ES_RIGHT) && (es->style & ES_CENTER))
4504 es->style &= ~ES_CENTER;
4505 es->style &= ~WS_HSCROLL;
4506 es->style &= ~WS_VSCROLL;
4507 if (es->style & ES_PASSWORD)
4508 es->password_char = '*';
4509 }
4510
4511 alloc_size = ROUND_TO_GROW((es->buffer_size + 1) * sizeof(WCHAR));
4512 if(!(es->hloc32W = LocalAlloc(LMEM_MOVEABLE | LMEM_ZEROINIT, alloc_size)))
4513 goto cleanup;
4514 es->buffer_size = LocalSize(es->hloc32W)/sizeof(WCHAR) - 1;
4515
4516 if (!(es->undo_text = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, (es->buffer_size + 1) * sizeof(WCHAR))))
4517 goto cleanup;
4518 es->undo_buffer_size = es->buffer_size;
4519
4520 if (es->style & ES_MULTILINE)
4521 if (!(es->first_line_def = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, sizeof(LINEDEF))))
4522 goto cleanup;
4523 es->line_count = 1;
4524
4525 /*
4526 * In Win95 look and feel, the WS_BORDER style is replaced by the
4527 * WS_EX_CLIENTEDGE style for the edit control. This gives the edit
4528 * control a nonclient area so we don't need to draw the border.
4529 * If WS_BORDER without WS_EX_CLIENTEDGE is specified we shouldn't have
4530 * a nonclient area and we should handle painting the border ourselves.
4531 *
4532 * When making modifications please ensure that the code still works
4533 * for edit controls created directly with style 0x50800000, exStyle 0
4534 * (which should have a single pixel border)
4535 */
4536 if (lpcs->dwExStyle & WS_EX_CLIENTEDGE)
4537 es->style &= ~WS_BORDER;
4538 else if (es->style & WS_BORDER)
4539 SetWindowLongW(hwnd, GWL_STYLE, es->style & ~WS_BORDER);
4540
4541 return TRUE;
4542
4543 cleanup:
4544 SetWindowLongPtrW(es->hwndSelf, 0, 0);
4545 EDIT_InvalidateUniscribeData(es);
4546 HeapFree(GetProcessHeap(), 0, es->first_line_def);
4547 HeapFree(GetProcessHeap(), 0, es->undo_text);
4548 if (es->hloc32W) LocalFree(es->hloc32W);
4549 HeapFree(GetProcessHeap(), 0, es->logAttr);
4550 HeapFree(GetProcessHeap(), 0, es);
4551 return FALSE;
4552 }
4553
4554
4555 /*********************************************************************
4556 *
4557 * WM_CREATE
4558 *
4559 */
4560 static LRESULT EDIT_WM_Create(EDITSTATE *es, LPCWSTR name)
4561 {
4562 RECT clientRect;
4563
4564 TRACE("%s\n", debugstr_w(name));
4565 /*
4566 * To initialize some final structure members, we call some helper
4567 * functions. However, since the EDITSTATE is not consistent (i.e.
4568 * not fully initialized), we should be very careful which
4569 * functions can be called, and in what order.
4570 */
4571 EDIT_WM_SetFont(es, 0, FALSE);
4572 EDIT_EM_EmptyUndoBuffer(es);
4573
4574 /* We need to calculate the format rect
4575 (applications may send EM_SETMARGINS before the control gets visible) */
4576 GetClientRect(es->hwndSelf, &clientRect);
4577 EDIT_SetRectNP(es, &clientRect);
4578
4579 if (name && *name) {
4580 EDIT_EM_ReplaceSel(es, FALSE, name, FALSE, FALSE);
4581 /* if we insert text to the editline, the text scrolls out
4582 * of the window, as the caret is placed after the insert
4583 * pos normally; thus we reset es->selection... to 0 and
4584 * update caret
4585 */
4586 es->selection_start = es->selection_end = 0;
4587 /* Adobe Photoshop does NOT like this. and MSDN says that EN_CHANGE
4588 * Messages are only to be sent when the USER does something to
4589 * change the contents. So I am removing this EN_CHANGE
4590 *
4591 * EDIT_NOTIFY_PARENT(es, EN_CHANGE);
4592 */
4593 EDIT_EM_ScrollCaret(es);
4594 }
4595 /* force scroll info update */
4596 EDIT_UpdateScrollInfo(es);
4597 /* The rule seems to return 1 here for success */
4598 /* Power Builder masked edit controls will crash */
4599 /* if not. */
4600 /* FIXME: is that in all cases so ? */
4601 return 1;
4602 }
4603
4604
4605 /*********************************************************************
4606 *
4607 * WM_NCDESTROY
4608 *
4609 */
4610 static LRESULT EDIT_WM_NCDestroy(EDITSTATE *es)
4611 {
4612 LINEDEF *pc, *pp;
4613
4614 /* The app can own the text buffer handle */
4615 if (es->hloc32W && (es->hloc32W != es->hlocapp)) {
4616 LocalFree(es->hloc32W);
4617 }
4618 if (es->hloc32A && (es->hloc32A != es->hlocapp)) {
4619 LocalFree(es->hloc32A);
4620 }
4621 EDIT_InvalidateUniscribeData(es);
4622 pc = es->first_line_def;
4623 while (pc)
4624 {
4625 pp = pc->next;
4626 HeapFree(GetProcessHeap(), 0, pc);
4627 pc = pp;
4628 }
4629
4630 SetWindowLongPtrW( es->hwndSelf, 0, 0 );
4631 HeapFree(GetProcessHeap(), 0, es->undo_text);
4632 HeapFree(GetProcessHeap(), 0, es);
4633
4634 return 0;
4635 }
4636
4637
4638 static inline LRESULT DefWindowProcT(HWND hwnd, UINT msg, WPARAM wParam, LPARAM lParam, BOOL unicode)
4639 {
4640 if(unicode)
4641 return DefWindowProcW(hwnd, msg, wParam, lParam);
4642 else
4643 return DefWindowProcA(hwnd, msg, wParam, lParam);
4644 }
4645
4646 /*********************************************************************
4647 *
4648 * EditWndProc_common
4649 *
4650 * The messages are in the order of the actual integer values
4651 * (which can be found in include/windows.h)
4652 */
4653 LRESULT EditWndProc_common( HWND hwnd, UINT msg, WPARAM wParam, LPARAM lParam, BOOL unicode )
4654 {
4655 EDITSTATE *es = (EDITSTATE *)GetWindowLongPtrW( hwnd, 0 );
4656 LRESULT result = 0;
4657
4658 TRACE("hwnd=%p msg=%x (%s) wparam=%lx lparam=%lx\n", hwnd, msg, SPY_GetMsgName(msg, hwnd), wParam, lParam);
4659
4660 if (!es && msg != WM_NCCREATE)
4661 return DefWindowProcT(hwnd, msg, wParam, lParam, unicode);
4662
4663 if (es && (msg != WM_NCDESTROY)) EDIT_LockBuffer(es);
4664
4665 switch (msg) {
4666 case EM_GETSEL:
4667 result = EDIT_EM_GetSel(es, (PUINT)wParam, (PUINT)lParam);
4668 break;
4669
4670 case EM_SETSEL:
4671 EDIT_EM_SetSel(es, wParam, lParam, FALSE);
4672 EDIT_EM_ScrollCaret(es);
4673 result = 1;
4674 break;
4675
4676 case EM_GETRECT:
4677 if (lParam)
4678 CopyRect((LPRECT)lParam, &es->format_rect);
4679 break;
4680
4681 case EM_SETRECT:
4682 if ((es->style & ES_MULTILINE) && lParam) {
4683 EDIT_SetRectNP(es, (LPRECT)lParam);
4684 EDIT_UpdateText(es, NULL, TRUE);
4685 }
4686 break;
4687
4688 case EM_SETRECTNP:
4689 if ((es->style & ES_MULTILINE) && lParam)
4690 EDIT_SetRectNP(es, (LPRECT)lParam);
4691 break;
4692
4693 case EM_SCROLL:
4694 result = EDIT_EM_Scroll(es, (INT)wParam);
4695 break;
4696
4697 case EM_LINESCROLL:
4698 result = (LRESULT)EDIT_EM_LineScroll(es, (INT)wParam, (INT)lParam);
4699 break;
4700
4701 case EM_SCROLLCARET:
4702 EDIT_EM_ScrollCaret(es);
4703 result = 1;
4704 break;
4705
4706 case EM_GETMODIFY:
4707 result = ((es->flags & EF_MODIFIED) != 0);
4708 break;
4709
4710 case EM_SETMODIFY:
4711 if (wParam)
4712 es->flags |= EF_MODIFIED;
4713 else
4714 es->flags &= ~(EF_MODIFIED | EF_UPDATE); /* reset pending updates */
4715 break;
4716
4717 case EM_GETLINECOUNT:
4718 result = (es->style & ES_MULTILINE) ? es->line_count : 1;
4719 break;
4720
4721 case EM_LINEINDEX:
4722 result = (LRESULT)EDIT_EM_LineIndex(es, (INT)wParam);
4723 break;
4724
4725 case EM_SETHANDLE:
4726 EDIT_EM_SetHandle(es, (HLOCAL)wParam);
4727 break;
4728
4729 case EM_GETHANDLE:
4730 result = (LRESULT)EDIT_EM_GetHandle(es);
4731 break;
4732
4733 case EM_GETTHUMB:
4734 result = EDIT_EM_GetThumb(es);
4735 break;
4736
4737 /* these messages missing from specs */
4738 case 0x00bf:
4739 case 0x00c0:
4740 case 0x00c3:
4741 case 0x00ca:
4742 FIXME("undocumented message 0x%x, please report\n", msg);
4743 result = DefWindowProcW(hwnd, msg, wParam, lParam);
4744 break;
4745
4746 case EM_LINELENGTH:
4747 result = (LRESULT)EDIT_EM_LineLength(es, (INT)wParam);
4748 break;
4749
4750 case EM_REPLACESEL:
4751 {
4752 LPWSTR textW;
4753
4754 if(unicode)
4755 textW = (LPWSTR)lParam;
4756 else
4757 {
4758 LPSTR textA = (LPSTR)lParam;
4759 INT countW = MultiByteToWideChar(CP_ACP, 0, textA, -1, NULL, 0);
4760 if (!(textW = HeapAlloc(GetProcessHeap(), 0, countW * sizeof(WCHAR)))) break;
4761 MultiByteToWideChar(CP_ACP, 0, textA, -1, textW, countW);
4762 }
4763
4764 EDIT_EM_ReplaceSel(es, (BOOL)wParam, textW, TRUE, TRUE);
4765 result = 1;
4766
4767 if(!unicode)
4768 HeapFree(GetProcessHeap(), 0, textW);
4769 break;
4770 }
4771
4772 case EM_GETLINE:
4773 result = (LRESULT)EDIT_EM_GetLine(es, (INT)wParam, (LPWSTR)lParam, unicode);
4774 break;
4775
4776 case EM_SETLIMITTEXT:
4777 EDIT_EM_SetLimitText(es, wParam);
4778 break;
4779
4780 case EM_CANUNDO:
4781 result = (LRESULT)EDIT_EM_CanUndo(es);
4782 break;
4783
4784 case EM_UNDO:
4785 case WM_UNDO:
4786 result = (LRESULT)EDIT_EM_Undo(es);
4787 break;
4788
4789 case EM_FMTLINES:
4790 result = (LRESULT)EDIT_EM_FmtLines(es, (BOOL)wParam);
4791 break;
4792
4793 case EM_LINEFROMCHAR:
4794 result = (LRESULT)EDIT_EM_LineFromChar(es, (INT)wParam);
4795 break;
4796
4797 case EM_SETTABSTOPS:
4798 result = (LRESULT)EDIT_EM_SetTabStops(es, (INT)wParam, (LPINT)lParam);
4799 break;
4800
4801 case EM_SETPASSWORDCHAR:
4802 {
4803 WCHAR charW = 0;
4804
4805 if(unicode)
4806 charW = (WCHAR)wParam;
4807 else
4808 {
4809 CHAR charA = wParam;
4810 MultiByteToWideChar(CP_ACP, 0, &charA, 1, &charW, 1);
4811 }
4812
4813 EDIT_EM_SetPasswordChar(es, charW);
4814 break;
4815 }
4816
4817 case EM_EMPTYUNDOBUFFER:
4818 EDIT_EM_EmptyUndoBuffer(es);
4819 break;
4820
4821 case EM_GETFIRSTVISIBLELINE:
4822 result = (es->style & ES_MULTILINE) ? es->y_offset : es->x_offset;
4823 break;
4824
4825 case EM_SETREADONLY:
4826 {
4827 DWORD old_style = es->style;
4828
4829 if (wParam) {
4830 SetWindowLongW( hwnd, GWL_STYLE,
4831 GetWindowLongW( hwnd, GWL_STYLE ) | ES_READONLY );
4832 es->style |= ES_READONLY;
4833 } else {
4834 SetWindowLongW( hwnd, GWL_STYLE,
4835 GetWindowLongW( hwnd, GWL_STYLE ) & ~ES_READONLY );
4836 es->style &= ~ES_READONLY;
4837 }
4838
4839 if (old_style ^ es->style)
4840 InvalidateRect(es->hwndSelf, NULL, TRUE);
4841
4842 result = 1;
4843 break;
4844 }
4845
4846 case EM_SETWORDBREAKPROC:
4847 EDIT_EM_SetWordBreakProc(es, (void *)lParam);
4848 break;
4849
4850 case EM_GETWORDBREAKPROC:
4851 result = (LRESULT)es->word_break_proc;
4852 break;
4853
4854 case EM_GETPASSWORDCHAR:
4855 {
4856 if(unicode)
4857 result = es->password_char;
4858 else
4859 {
4860 WCHAR charW = es->password_char;
4861 CHAR charA = 0;
4862 WideCharToMultiByte(CP_ACP, 0, &charW, 1, &charA, 1, NULL, NULL);
4863 result = charA;
4864 }
4865 break;
4866 }
4867
4868 case EM_SETMARGINS:
4869 EDIT_EM_SetMargins(es, (INT)wParam, LOWORD(lParam), HIWORD(lParam), TRUE);
4870 break;
4871
4872 case EM_GETMARGINS:
4873 result = MAKELONG(es->left_margin, es->right_margin);
4874 break;
4875
4876 case EM_GETLIMITTEXT:
4877 result = es->buffer_limit;
4878 break;
4879
4880 case EM_POSFROMCHAR:
4881 if ((INT)wParam >= get_text_length(es)) result = -1;
4882 else result = EDIT_EM_PosFromChar(es, (INT)wParam, FALSE);
4883 break;
4884
4885 case EM_CHARFROMPOS:
4886 result = EDIT_EM_CharFromPos(es, (short)LOWORD(lParam), (short)HIWORD(lParam));
4887 break;
4888
4889 /* End of the EM_ messages which were in numerical order; what order
4890 * are these in? vaguely alphabetical?
4891 */
4892
4893 case WM_NCCREATE:
4894 result = EDIT_WM_NCCreate(hwnd, (LPCREATESTRUCTW)lParam, unicode);
4895 break;
4896
4897 case WM_NCDESTROY:
4898 result = EDIT_WM_NCDestroy(es);
4899 es = NULL;
4900 break;
4901
4902 case WM_GETDLGCODE:
4903 result = DLGC_HASSETSEL | DLGC_WANTCHARS | DLGC_WANTARROWS;
4904
4905 if (es->style & ES_MULTILINE)
4906 result |= DLGC_WANTALLKEYS;
4907
4908 if (lParam)
4909 {
4910 es->flags|=EF_DIALOGMODE;
4911
4912 if (((LPMSG)lParam)->message == WM_KEYDOWN)
4913 {
4914 int vk = (int)((LPMSG)lParam)->wParam;
4915
4916 if (es->hwndListBox)
4917 {
4918 if (vk == VK_RETURN || vk == VK_ESCAPE)
4919 if (SendMessageW(GetParent(hwnd), CB_GETDROPPEDSTATE, 0, 0))
4920 result |= DLGC_WANTMESSAGE;
4921 }
4922 }
4923 }
4924 break;
4925
4926 case WM_IME_CHAR:
4927 if (!unicode)
4928 {
4929 WCHAR charW;
4930 CHAR strng[2];
4931
4932 strng[0] = wParam >> 8;
4933 strng[1] = wParam & 0xff;
4934 if (strng[0]) MultiByteToWideChar(CP_ACP, 0, strng, 2, &charW, 1);
4935 else MultiByteToWideChar(CP_ACP, 0, &strng[1], 1, &charW, 1);
4936 result = EDIT_WM_Char(es, charW);
4937 break;
4938 }
4939 /* fall through */
4940 case WM_CHAR:
4941 {
4942 WCHAR charW;
4943
4944 if(unicode)
4945 charW = wParam;
4946 else
4947 {
4948 CHAR charA = wParam;
4949 MultiByteToWideChar(CP_ACP, 0, &charA, 1, &charW, 1);
4950 }
4951
4952 if (es->hwndListBox)
4953 {
4954 if (charW == VK_RETURN || charW == VK_ESCAPE)
4955 {
4956 if (SendMessageW(GetParent(hwnd), CB_GETDROPPEDSTATE, 0, 0))
4957 SendMessageW(GetParent(hwnd), WM_KEYDOWN, charW, 0);
4958 break;
4959 }
4960 }
4961 result = EDIT_WM_Char(es, charW);
4962 break;
4963 }
4964
4965 case WM_UNICHAR:
4966 if (unicode)
4967 {
4968 if (wParam == UNICODE_NOCHAR) return TRUE;
4969 if (wParam <= 0x000fffff)
4970 {
4971 if(wParam > 0xffff) /* convert to surrogates */
4972 {
4973 wParam -= 0x10000;
4974 EDIT_WM_Char(es, (wParam >> 10) + 0xd800);
4975 EDIT_WM_Char(es, (wParam & 0x03ff) + 0xdc00);
4976 }
4977 else EDIT_WM_Char(es, wParam);
4978 }
4979 return 0;
4980 }
4981 break;
4982
4983 case WM_CLEAR:
4984 EDIT_WM_Clear(es);
4985 break;
4986
4987 case WM_COMMAND:
4988 EDIT_WM_Command(es, HIWORD(wParam), LOWORD(wParam), (HWND)lParam);
4989 break;
4990
4991 case WM_CONTEXTMENU:
4992 EDIT_WM_ContextMenu(es, (short)LOWORD(lParam), (short)HIWORD(lParam));
4993 break;
4994
4995 case WM_COPY:
4996 EDIT_WM_Copy(es);
4997 break;
4998
4999 case WM_CREATE:
5000 if(unicode)
5001 result = EDIT_WM_Create(es, ((LPCREATESTRUCTW)lParam)->lpszName);
5002 else
5003 {
5004 LPCSTR nameA = ((LPCREATESTRUCTA)lParam)->lpszName;
5005 LPWSTR nameW = NULL;
5006 if(nameA)
5007 {
5008 INT countW = MultiByteToWideChar(CP_ACP, 0, nameA, -1, NULL, 0);
5009 if((nameW = HeapAlloc(GetProcessHeap(), 0, countW * sizeof(WCHAR))))
5010 MultiByteToWideChar(CP_ACP, 0, nameA, -1, nameW, countW);
5011 }
5012 result = EDIT_WM_Create(es, nameW);
5013 HeapFree(GetProcessHeap(), 0, nameW);
5014 }
5015 break;
5016
5017 case WM_CUT:
5018 EDIT_WM_Cut(es);
5019 break;
5020
5021 case WM_ENABLE:
5022 es->bEnableState = (BOOL) wParam;
5023 EDIT_UpdateText(es, NULL, TRUE);
5024 break;
5025
5026 case WM_ERASEBKGND:
5027 /* we do the proper erase in EDIT_WM_Paint */
5028 result = 1;
5029 break;
5030
5031 case WM_GETFONT:
5032 result = (LRESULT)es->font;
5033 break;
5034
5035 case WM_GETTEXT:
5036 result = (LRESULT)EDIT_WM_GetText(es, (INT)wParam, (LPWSTR)lParam, unicode);
5037 break;
5038
5039 case WM_GETTEXTLENGTH:
5040 if (unicode) result = get_text_length(es);
5041 else result = WideCharToMultiByte( CP_ACP, 0, es->text, get_text_length(es),
5042 NULL, 0, NULL, NULL );
5043 break;
5044
5045 case WM_HSCROLL:
5046 result = EDIT_WM_HScroll(es, LOWORD(wParam), (short)HIWORD(wParam));
5047 break;
5048
5049 case WM_KEYDOWN:
5050 result = EDIT_WM_KeyDown(es, (INT)wParam);
5051 break;
5052
5053 case WM_KILLFOCUS:
5054 result = EDIT_WM_KillFocus(es);
5055 break;
5056
5057 case WM_LBUTTONDBLCLK:
5058 result = EDIT_WM_LButtonDblClk(es);
5059 break;
5060
5061 case WM_LBUTTONDOWN:
5062 result = EDIT_WM_LButtonDown(es, wParam, (short)LOWORD(lParam), (short)HIWORD(lParam));
5063 break;
5064
5065 case WM_LBUTTONUP:
5066 result = EDIT_WM_LButtonUp(es);
5067 break;
5068
5069 case WM_MBUTTONDOWN:
5070 result = EDIT_WM_MButtonDown(es);
5071 break;
5072
5073 case WM_MOUSEMOVE:
5074 result = EDIT_WM_MouseMove(es, (short)LOWORD(lParam), (short)HIWORD(lParam));
5075 break;
5076
5077 case WM_PRINTCLIENT:
5078 case WM_PAINT:
5079 EDIT_WM_Paint(es, (HDC)wParam);
5080 break;
5081
5082 case WM_PASTE:
5083 EDIT_WM_Paste(es);
5084 break;
5085
5086 case WM_SETFOCUS:
5087 EDIT_WM_SetFocus(es);
5088 break;
5089
5090 case WM_SETFONT:
5091 EDIT_WM_SetFont(es, (HFONT)wParam, LOWORD(lParam) != 0);
5092 break;
5093
5094 case WM_SETREDRAW:
5095 /* FIXME: actually set an internal flag and behave accordingly */
5096 break;
5097
5098 case WM_SETTEXT:
5099 EDIT_WM_SetText(es, (LPCWSTR)lParam, unicode);
5100 result = TRUE;
5101 break;
5102
5103 case WM_SIZE:
5104 EDIT_WM_Size(es, (UINT)wParam, LOWORD(lParam), HIWORD(lParam));
5105 break;
5106
5107 case WM_STYLECHANGED:
5108 result = EDIT_WM_StyleChanged(es, wParam, (const STYLESTRUCT *)lParam);
5109 break;
5110
5111 case WM_STYLECHANGING:
5112 result = 0; /* See EDIT_WM_StyleChanged */
5113 break;
5114
5115 case WM_SYSKEYDOWN:
5116 result = EDIT_WM_SysKeyDown(es, (INT)wParam, (DWORD)lParam);
5117 break;
5118
5119 case WM_TIMER:
5120 EDIT_WM_Timer(es);
5121 break;
5122
5123 case WM_VSCROLL:
5124 result = EDIT_WM_VScroll(es, LOWORD(wParam), (short)HIWORD(wParam));
5125 break;
5126
5127 case WM_MOUSEWHEEL:
5128 {
5129 int wheelDelta;
5130 UINT pulScrollLines = 3;
5131 SystemParametersInfoW(SPI_GETWHEELSCROLLLINES,0, &pulScrollLines, 0);
5132
5133 if (wParam & (MK_SHIFT | MK_CONTROL)) {
5134 result = DefWindowProcW(hwnd, msg, wParam, lParam);
5135 break;
5136 }
5137 wheelDelta = GET_WHEEL_DELTA_WPARAM(wParam);
5138 /* if scrolling changes direction, ignore left overs */
5139 if ((wheelDelta < 0 && es->wheelDeltaRemainder < 0) ||
5140 (wheelDelta > 0 && es->wheelDeltaRemainder > 0))
5141 es->wheelDeltaRemainder += wheelDelta;
5142 else
5143 es->wheelDeltaRemainder = wheelDelta;
5144 if (es->wheelDeltaRemainder && pulScrollLines)
5145 {
5146 int cLineScroll;
5147 pulScrollLines = (int) min((UINT) es->line_count, pulScrollLines);
5148 cLineScroll = pulScrollLines * (float)es->wheelDeltaRemainder / WHEEL_DELTA;
5149 es->wheelDeltaRemainder -= WHEEL_DELTA * cLineScroll / (int)pulScrollLines;
5150 result = EDIT_EM_LineScroll(es, 0, -cLineScroll);
5151 }
5152 }
5153 break;
5154
5155
5156 /* IME messages to make the edit control IME aware */
5157 case WM_IME_SETCONTEXT:
5158 break;
5159
5160 case WM_IME_STARTCOMPOSITION:
5161 es->composition_start = es->selection_end;
5162 es->composition_len = 0;
5163 break;
5164
5165 case WM_IME_COMPOSITION:
5166 EDIT_ImeComposition(hwnd, lParam, es);
5167 break;
5168
5169 case WM_IME_ENDCOMPOSITION:
5170 if (es->composition_len > 0)
5171 {
5172 EDIT_EM_ReplaceSel(es, TRUE, empty_stringW, TRUE, TRUE);
5173 es->selection_end = es->selection_start;
5174 es->composition_len= 0;
5175 }
5176 break;
5177
5178 case WM_IME_COMPOSITIONFULL:
5179 break;
5180
5181 case WM_IME_SELECT:
5182 break;
5183
5184 case WM_IME_CONTROL:
5185 break;
5186
5187 case WM_IME_REQUEST:
5188 switch (wParam)
5189 {
5190 case IMR_QUERYCHARPOSITION:
5191 {
5192 LRESULT pos;
5193 IMECHARPOSITION *chpos = (IMECHARPOSITION *)lParam;
5194
5195 pos = EDIT_EM_PosFromChar(es, es->selection_start + chpos->dwCharPos, FALSE);
5196 chpos->pt.x = LOWORD(pos);
5197 chpos->pt.y = HIWORD(pos);
5198 chpos->cLineHeight = es->line_height;
5199 chpos->rcDocument = es->format_rect;
5200 MapWindowPoints(hwnd, 0, &chpos->pt, 1);
5201 MapWindowPoints(hwnd, 0, (POINT*)&chpos->rcDocument, 2);
5202 result = 1;
5203 break;
5204 }
5205 }
5206 break;
5207
5208 default:
5209 result = DefWindowProcT(hwnd, msg, wParam, lParam, unicode);
5210 break;
5211 }
5212
5213 if (IsWindow(hwnd) && es) EDIT_UnlockBuffer(es, FALSE);
5214
5215 TRACE("hwnd=%p msg=%x (%s) -- 0x%08lx\n", hwnd, msg, SPY_GetMsgName(msg, hwnd), result);
5216
5217 return result;
5218 }
5219
5220
5221 /*********************************************************************
5222 * edit class descriptor
5223 */
5224 static const WCHAR editW[] = {'E','d','i','t',0};
5225 const struct builtin_class_descr EDIT_builtin_class =
5226 {
5227 editW, /* name */
5228 CS_DBLCLKS | CS_PARENTDC, /* style */
5229 WINPROC_EDIT, /* proc */
5230 #ifdef __i386__
5231 sizeof(EDITSTATE *) + sizeof(WORD), /* extra */
5232 #else
5233 sizeof(EDITSTATE *), /* extra */
5234 #endif
5235 IDC_IBEAM, /* cursor */
5236 0 /* brush */
5237 };
Windows API implementation