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windowscodecs: Add more tests for PNG metadata.
[wine/multimedia.git] / dlls / user32 / edit.c
blob278aa384a9369206a4a517ccf530d32972f16158
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_APP_HAS_HANDLE 0x0200 /* Set when an app sends EM_[G|S]ETHANDLE. We are in sole control of
83 the text buffer if this is clear. */
84 #define EF_DIALOGMODE 0x0400 /* Indicates that we are inside a dialog window */
85
86 typedef enum
87 {
88 END_0 = 0, /* line ends with terminating '\0' character */
89 END_WRAP, /* line is wrapped */
90 END_HARD, /* line ends with a hard return '\r\n' */
91 END_SOFT, /* line ends with a soft return '\r\r\n' */
92 END_RICH /* line ends with a single '\n' */
93 } LINE_END;
94
95 typedef struct tagLINEDEF {
96 INT length; /* bruto length of a line in bytes */
97 INT net_length; /* netto length of a line in visible characters */
98 LINE_END ending;
99 INT width; /* width of the line in pixels */
100 INT index; /* line index into the buffer */
101 SCRIPT_STRING_ANALYSIS ssa; /* Uniscribe Data */
102 struct tagLINEDEF *next;
103 } LINEDEF;
104
105 typedef struct
106 {
107 BOOL is_unicode; /* how the control was created */
108 LPWSTR text; /* the actual contents of the control */
109 UINT text_length; /* cached length of text buffer (in WCHARs) - use get_text_length() to retrieve */
110 UINT buffer_size; /* the size of the buffer in characters */
111 UINT buffer_limit; /* the maximum size to which the buffer may grow in characters */
112 HFONT font; /* NULL means standard system font */
113 INT x_offset; /* scroll offset for multi lines this is in pixels
114 for single lines it's in characters */
115 INT line_height; /* height of a screen line in pixels */
116 INT char_width; /* average character width in pixels */
117 DWORD style; /* sane version of wnd->dwStyle */
118 WORD flags; /* flags that are not in es->style or wnd->flags (EF_XXX) */
119 INT undo_insert_count; /* number of characters inserted in sequence */
120 UINT undo_position; /* character index of the insertion and deletion */
121 LPWSTR undo_text; /* deleted text */
122 UINT undo_buffer_size; /* size of the deleted text buffer */
123 INT selection_start; /* == selection_end if no selection */
124 INT selection_end; /* == current caret position */
125 WCHAR password_char; /* == 0 if no password char, and for multi line controls */
126 INT left_margin; /* in pixels */
127 INT right_margin; /* in pixels */
128 RECT format_rect;
129 INT text_width; /* width of the widest line in pixels for multi line controls
130 and just line width for single line controls */
131 INT region_posx; /* Position of cursor relative to region: */
132 INT region_posy; /* -1: to left, 0: within, 1: to right */
133 void *word_break_proc; /* 32-bit word break proc: ANSI or Unicode */
134 INT line_count; /* number of lines */
135 INT y_offset; /* scroll offset in number of lines */
136 BOOL bCaptureState; /* flag indicating whether mouse was captured */
137 BOOL bEnableState; /* flag keeping the enable state */
138 HWND hwndSelf; /* the our window handle */
139 HWND hwndParent; /* Handle of parent for sending EN_* messages.
140 Even if parent will change, EN_* messages
141 should be sent to the first parent. */
142 HWND hwndListBox; /* handle of ComboBox's listbox or NULL */
143 /*
144 * only for multi line controls
145 */
146 INT lock_count; /* amount of re-entries in the EditWndProc */
147 INT tabs_count;
148 LPINT tabs;
149 LINEDEF *first_line_def; /* linked list of (soft) linebreaks */
150 HLOCAL hloc32W; /* our unicode local memory block */
151 HLOCAL hloc32A; /* alias for ANSI control receiving EM_GETHANDLE
152 or EM_SETHANDLE */
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 sz = ScriptString_pSize(current_line->ssa);
644 if (sz)
645 current_line->width = sz->cx;
646 else
647 prev = 0;
648 next = prev - 1;
649 } while (prev && current_line->width > fw);
650 current_line->net_length = w;
651
652 if (prev == 0) { /* Didn't find a line break so force a break */
653 INT *piDx;
654 const INT *count;
655
656 EDIT_InvalidateUniscribeData_linedef(current_line);
657 EDIT_UpdateUniscribeData_linedef(es, NULL, current_line);
658
659 if (current_line->ssa)
660 {
661 count = ScriptString_pcOutChars(current_line->ssa);
662 piDx = HeapAlloc(GetProcessHeap(),0,sizeof(INT) * (*count));
663 ScriptStringGetLogicalWidths(current_line->ssa,piDx);
664
665 prev = current_line->net_length-1;
666 do {
667 current_line->width -= piDx[prev];
668 prev--;
669 } while ( prev > 0 && current_line->width > fw);
670 if (prev<=0)
671 prev = 1;
672 HeapFree(GetProcessHeap(),0,piDx);
673 }
674 else
675 prev = (fw / es->char_width);
676 }
677
678 /* If the first line we are calculating, wrapped before istart, we must
679 * adjust istart in order for this to be reflected in the update region. */
680 if (current_line->index == nstart_index && istart > current_line->index + prev)
681 istart = current_line->index + prev;
682 /* else if we are updating the previous line before the first line we
683 * are re-calculating and it expanded */
684 else if (current_line == start_line &&
685 current_line->index != nstart_index && orig_net_length < prev)
686 {
687 /* Line expanded due to an upwards line wrap so we must partially include
688 * previous line in update region */
689 nstart_line = line_index;
690 nstart_index = current_line->index;
691 istart = current_line->index + orig_net_length;
692 }
693
694 current_line->net_length = prev;
695 current_line->ending = END_WRAP;
696
697 if (current_line->net_length > 0)
698 {
699 EDIT_UpdateUniscribeData_linedef(es, NULL, current_line);
700 sz = ScriptString_pSize(current_line->ssa);
701 current_line->width = sz->cx;
702 }
703 else current_line->width = 0;
704 }
705 else if (current_line == start_line &&
706 current_line->index != nstart_index &&
707 orig_net_length < current_line->net_length) {
708 /* The previous line expanded but it's still not as wide as the client rect */
709 /* The expansion is due to an upwards line wrap so we must partially include
710 it in the update region */
711 nstart_line = line_index;
712 nstart_index = current_line->index;
713 istart = current_line->index + orig_net_length;
714 }
715 }
716
717
718 /* Adjust length to include line termination */
719 switch (current_line->ending) {
720 case END_SOFT:
721 current_line->length = current_line->net_length + 3;
722 break;
723 case END_RICH:
724 current_line->length = current_line->net_length + 1;
725 break;
726 case END_HARD:
727 current_line->length = current_line->net_length + 2;
728 break;
729 case END_WRAP:
730 case END_0:
731 current_line->length = current_line->net_length;
732 break;
733 }
734 es->text_width = max(es->text_width, current_line->width);
735 current_position += current_line->length;
736 previous_line = current_line;
737
738 /* Discard data for non-visible lines. It will be calculated as needed */
739 if ((line_index < es->y_offset) || (line_index > es->y_offset + vlc))
740 EDIT_InvalidateUniscribeData_linedef(current_line);
741
742 current_line = current_line->next;
743 line_index++;
744 } while (previous_line->ending != END_0);
745
746 /* Finish adjusting line indexes by delta or remove hanging lines */
747 if (previous_line->ending == END_0)
748 {
749 LINEDEF *pnext = NULL;
750
751 previous_line->next = NULL;
752 while (current_line)
753 {
754 pnext = current_line->next;
755 EDIT_InvalidateUniscribeData_linedef(current_line);
756 HeapFree(GetProcessHeap(), 0, current_line);
757 current_line = pnext;
758 es->line_count--;
759 }
760 }
761 else if (delta != 0)
762 {
763 while (current_line)
764 {
765 current_line->index += delta;
766 current_line = current_line->next;
767 }
768 }
769
770 /* Calculate rest of modification rectangle */
771 if (hrgn)
772 {
773 HRGN tmphrgn;
774 /*
775 * We calculate two rectangles. One for the first line which may have
776 * an indent with respect to the format rect. The other is a format-width
777 * rectangle that spans the rest of the lines that changed or moved.
778 */
779 rc.top = es->format_rect.top + nstart_line * es->line_height -
780 (es->y_offset * es->line_height); /* Adjust for vertical scrollbar */
781 rc.bottom = rc.top + es->line_height;
782 if ((es->style & ES_CENTER) || (es->style & ES_RIGHT))
783 rc.left = es->format_rect.left;
784 else
785 rc.left = LOWORD(EDIT_EM_PosFromChar(es, nstart_index, FALSE));
786 rc.right = es->format_rect.right;
787 SetRectRgn(hrgn, rc.left, rc.top, rc.right, rc.bottom);
788
789 rc.top = rc.bottom;
790 rc.left = es->format_rect.left;
791 rc.right = es->format_rect.right;
792 /*
793 * If lines were added or removed we must re-paint the remainder of the
794 * lines since the remaining lines were either shifted up or down.
795 */
796 if (line_count < es->line_count) /* We added lines */
797 rc.bottom = es->line_count * es->line_height;
798 else if (line_count > es->line_count) /* We removed lines */
799 rc.bottom = line_count * es->line_height;
800 else
801 rc.bottom = line_index * es->line_height;
802 rc.bottom += es->format_rect.top;
803 rc.bottom -= (es->y_offset * es->line_height); /* Adjust for vertical scrollbar */
804 tmphrgn = CreateRectRgn(rc.left, rc.top, rc.right, rc.bottom);
805 CombineRgn(hrgn, hrgn, tmphrgn, RGN_OR);
806 DeleteObject(tmphrgn);
807 }
808 }
809
810 /*********************************************************************
811 *
812 * EDIT_CalcLineWidth_SL
813 *
814 */
815 static void EDIT_CalcLineWidth_SL(EDITSTATE *es)
816 {
817 EDIT_UpdateUniscribeData(es, NULL, 0);
818 if (es->ssa)
819 {
820 const SIZE *size;
821 size = ScriptString_pSize(es->ssa);
822 es->text_width = size->cx;
823 }
824 else
825 es->text_width = 0;
826 }
827
828 /*********************************************************************
829 *
830 * EDIT_CharFromPos
831 *
832 * Beware: This is not the function called on EM_CHARFROMPOS
833 * The position _can_ be outside the formatting / client
834 * rectangle
835 * The return value is only the character index
836 *
837 */
838 static INT EDIT_CharFromPos(EDITSTATE *es, INT x, INT y, LPBOOL after_wrap)
839 {
840 INT index;
841
842 if (es->style & ES_MULTILINE) {
843 int trailing;
844 INT line = (y - es->format_rect.top) / es->line_height + es->y_offset;
845 INT line_index = 0;
846 LINEDEF *line_def = es->first_line_def;
847 EDIT_UpdateUniscribeData(es, NULL, line);
848 while ((line > 0) && line_def->next) {
849 line_index += line_def->length;
850 line_def = line_def->next;
851 line--;
852 }
853
854 x += es->x_offset - es->format_rect.left;
855 if (es->style & ES_RIGHT)
856 x -= (es->format_rect.right - es->format_rect.left) - line_def->width;
857 else if (es->style & ES_CENTER)
858 x -= ((es->format_rect.right - es->format_rect.left) - line_def->width) / 2;
859 if (x >= line_def->width) {
860 if (after_wrap)
861 *after_wrap = (line_def->ending == END_WRAP);
862 return line_index + line_def->net_length;
863 }
864 if (x <= 0 || !line_def->ssa) {
865 if (after_wrap)
866 *after_wrap = FALSE;
867 return line_index;
868 }
869
870 ScriptStringXtoCP(line_def->ssa, x , &index, &trailing);
871 if (trailing) index++;
872 index += line_index;
873 if (after_wrap)
874 *after_wrap = ((index == line_index + line_def->net_length) &&
875 (line_def->ending == END_WRAP));
876 } else {
877 INT xoff = 0;
878 INT trailing;
879 if (after_wrap)
880 *after_wrap = FALSE;
881 x -= es->format_rect.left;
882 if (!x)
883 return es->x_offset;
884
885 if (!es->x_offset)
886 {
887 INT indent = (es->format_rect.right - es->format_rect.left) - es->text_width;
888 if (es->style & ES_RIGHT)
889 x -= indent;
890 else if (es->style & ES_CENTER)
891 x -= indent / 2;
892 }
893
894 EDIT_UpdateUniscribeData(es, NULL, 0);
895 if (es->x_offset)
896 {
897 if (es->ssa)
898 {
899 if (es->x_offset>= get_text_length(es))
900 {
901 const SIZE *size;
902 size = ScriptString_pSize(es->ssa);
903 xoff = size->cx;
904 }
905 ScriptStringCPtoX(es->ssa, es->x_offset, FALSE, &xoff);
906 }
907 else
908 xoff = 0;
909 }
910 if (x < 0)
911 {
912 if (x + xoff > 0 || !es->ssa)
913 {
914 ScriptStringXtoCP(es->ssa, x+xoff, &index, &trailing);
915 if (trailing) index++;
916 }
917 else
918 index = 0;
919 }
920 else
921 {
922 if (x)
923 {
924 const SIZE *size = NULL;
925 if (es->ssa)
926 size = ScriptString_pSize(es->ssa);
927 if (!size)
928 index = 0;
929 else if (x > size->cx)
930 index = get_text_length(es);
931 else if (es->ssa)
932 {
933 ScriptStringXtoCP(es->ssa, x+xoff, &index, &trailing);
934 if (trailing) index++;
935 }
936 else
937 index = 0;
938 }
939 else
940 index = es->x_offset;
941 }
942 }
943 return index;
944 }
945
946
947 /*********************************************************************
948 *
949 * EDIT_ConfinePoint
950 *
951 * adjusts the point to be within the formatting rectangle
952 * (so CharFromPos returns the nearest _visible_ character)
953 *
954 */
955 static void EDIT_ConfinePoint(const EDITSTATE *es, LPINT x, LPINT y)
956 {
957 *x = min(max(*x, es->format_rect.left), es->format_rect.right - 1);
958 *y = min(max(*y, es->format_rect.top), es->format_rect.bottom - 1);
959 }
960
961
962 /*********************************************************************
963 *
964 * EM_LINEFROMCHAR
965 *
966 */
967 static INT EDIT_EM_LineFromChar(EDITSTATE *es, INT index)
968 {
969 INT line;
970 LINEDEF *line_def;
971
972 if (!(es->style & ES_MULTILINE))
973 return 0;
974 if (index > (INT)get_text_length(es))
975 return es->line_count - 1;
976 if (index == -1)
977 index = min(es->selection_start, es->selection_end);
978
979 line = 0;
980 line_def = es->first_line_def;
981 index -= line_def->length;
982 while ((index >= 0) && line_def->next) {
983 line++;
984 line_def = line_def->next;
985 index -= line_def->length;
986 }
987 return line;
988 }
989
990
991 /*********************************************************************
992 *
993 * EM_LINEINDEX
994 *
995 */
996 static INT EDIT_EM_LineIndex(const EDITSTATE *es, INT line)
997 {
998 INT line_index;
999 const LINEDEF *line_def;
1000
1001 if (!(es->style & ES_MULTILINE))
1002 return 0;
1003 if (line >= es->line_count)
1004 return -1;
1005
1006 line_index = 0;
1007 line_def = es->first_line_def;
1008 if (line == -1) {
1009 INT index = es->selection_end - line_def->length;
1010 while ((index >= 0) && line_def->next) {
1011 line_index += line_def->length;
1012 line_def = line_def->next;
1013 index -= line_def->length;
1014 }
1015 } else {
1016 while (line > 0) {
1017 line_index += line_def->length;
1018 line_def = line_def->next;
1019 line--;
1020 }
1021 }
1022 return line_index;
1023 }
1024
1025
1026 /*********************************************************************
1027 *
1028 * EM_LINELENGTH
1029 *
1030 */
1031 static INT EDIT_EM_LineLength(EDITSTATE *es, INT index)
1032 {
1033 LINEDEF *line_def;
1034
1035 if (!(es->style & ES_MULTILINE))
1036 return get_text_length(es);
1037
1038 if (index == -1) {
1039 /* get the number of remaining non-selected chars of selected lines */
1040 INT32 l; /* line number */
1041 INT32 li; /* index of first char in line */
1042 INT32 count;
1043 l = EDIT_EM_LineFromChar(es, es->selection_start);
1044 /* # chars before start of selection area */
1045 count = es->selection_start - EDIT_EM_LineIndex(es, l);
1046 l = EDIT_EM_LineFromChar(es, es->selection_end);
1047 /* # chars after end of selection */
1048 li = EDIT_EM_LineIndex(es, l);
1049 count += li + EDIT_EM_LineLength(es, li) - es->selection_end;
1050 return count;
1051 }
1052 line_def = es->first_line_def;
1053 index -= line_def->length;
1054 while ((index >= 0) && line_def->next) {
1055 line_def = line_def->next;
1056 index -= line_def->length;
1057 }
1058 return line_def->net_length;
1059 }
1060
1061
1062 /*********************************************************************
1063 *
1064 * EM_POSFROMCHAR
1065 *
1066 */
1067 static LRESULT EDIT_EM_PosFromChar(EDITSTATE *es, INT index, BOOL after_wrap)
1068 {
1069 INT len = get_text_length(es);
1070 INT l;
1071 INT li;
1072 INT x = 0;
1073 INT y = 0;
1074 INT w;
1075 INT lw = 0;
1076 LINEDEF *line_def;
1077
1078 index = min(index, len);
1079 if (es->style & ES_MULTILINE) {
1080 l = EDIT_EM_LineFromChar(es, index);
1081 EDIT_UpdateUniscribeData(es, NULL, l);
1082
1083 y = (l - es->y_offset) * es->line_height;
1084 li = EDIT_EM_LineIndex(es, l);
1085 if (after_wrap && (li == index) && l) {
1086 INT l2 = l - 1;
1087 line_def = es->first_line_def;
1088 while (l2) {
1089 line_def = line_def->next;
1090 l2--;
1091 }
1092 if (line_def->ending == END_WRAP) {
1093 l--;
1094 y -= es->line_height;
1095 li = EDIT_EM_LineIndex(es, l);
1096 }
1097 }
1098
1099 line_def = es->first_line_def;
1100 while (line_def->index != li)
1101 line_def = line_def->next;
1102
1103 lw = line_def->width;
1104 w = es->format_rect.right - es->format_rect.left;
1105 if (line_def->ssa)
1106 {
1107 ScriptStringCPtoX(line_def->ssa, (index - 1) - li, TRUE, &x);
1108 x -= es->x_offset;
1109 }
1110 else
1111 x = es->x_offset;
1112
1113 if (es->style & ES_RIGHT)
1114 x = w - (lw - x);
1115 else if (es->style & ES_CENTER)
1116 x += (w - lw) / 2;
1117 } else {
1118 INT xoff = 0;
1119 INT xi = 0;
1120 EDIT_UpdateUniscribeData(es, NULL, 0);
1121 if (es->x_offset)
1122 {
1123 if (es->ssa)
1124 {
1125 if (es->x_offset >= get_text_length(es))
1126 {
1127 int leftover = es->x_offset - get_text_length(es);
1128 if (es->ssa)
1129 {
1130 const SIZE *size;
1131 size = ScriptString_pSize(es->ssa);
1132 xoff = size->cx;
1133 }
1134 else
1135 xoff = 0;
1136 xoff += es->char_width * leftover;
1137 }
1138 else
1139 ScriptStringCPtoX(es->ssa, es->x_offset, FALSE, &xoff);
1140 }
1141 else
1142 xoff = 0;
1143 }
1144 if (index)
1145 {
1146 if (index >= get_text_length(es))
1147 {
1148 if (es->ssa)
1149 {
1150 const SIZE *size;
1151 size = ScriptString_pSize(es->ssa);
1152 xi = size->cx;
1153 }
1154 else
1155 xi = 0;
1156 }
1157 else if (es->ssa)
1158 ScriptStringCPtoX(es->ssa, index, FALSE, &xi);
1159 else
1160 xi = 0;
1161 }
1162 x = xi - xoff;
1163
1164 if (index >= es->x_offset) {
1165 if (!es->x_offset && (es->style & (ES_RIGHT | ES_CENTER)))
1166 {
1167 w = es->format_rect.right - es->format_rect.left;
1168 if (w > es->text_width)
1169 {
1170 if (es->style & ES_RIGHT)
1171 x += w - es->text_width;
1172 else if (es->style & ES_CENTER)
1173 x += (w - es->text_width) / 2;
1174 }
1175 }
1176 }
1177 y = 0;
1178 }
1179 x += es->format_rect.left;
1180 y += es->format_rect.top;
1181 return MAKELONG((INT16)x, (INT16)y);
1182 }
1183
1184
1185 /*********************************************************************
1186 *
1187 * EDIT_GetLineRect
1188 *
1189 * Calculates the bounding rectangle for a line from a starting
1190 * column to an ending column.
1191 *
1192 */
1193 static void EDIT_GetLineRect(EDITSTATE *es, INT line, INT scol, INT ecol, LPRECT rc)
1194 {
1195 SCRIPT_STRING_ANALYSIS ssa;
1196 INT line_index = 0;
1197 INT pt1, pt2, pt3;
1198
1199 if (es->style & ES_MULTILINE)
1200 {
1201 const LINEDEF *line_def = NULL;
1202 rc->top = es->format_rect.top + (line - es->y_offset) * es->line_height;
1203 if (line >= es->line_count)
1204 return;
1205
1206 line_def = es->first_line_def;
1207 if (line == -1) {
1208 INT index = es->selection_end - line_def->length;
1209 while ((index >= 0) && line_def->next) {
1210 line_index += line_def->length;
1211 line_def = line_def->next;
1212 index -= line_def->length;
1213 }
1214 } else {
1215 while (line > 0) {
1216 line_index += line_def->length;
1217 line_def = line_def->next;
1218 line--;
1219 }
1220 }
1221 ssa = line_def->ssa;
1222 }
1223 else
1224 {
1225 line_index = 0;
1226 rc->top = es->format_rect.top;
1227 ssa = es->ssa;
1228 }
1229
1230 rc->bottom = rc->top + es->line_height;
1231 pt1 = (scol == 0) ? es->format_rect.left : (short)LOWORD(EDIT_EM_PosFromChar(es, line_index + scol, TRUE));
1232 pt2 = (ecol == -1) ? es->format_rect.right : (short)LOWORD(EDIT_EM_PosFromChar(es, line_index + ecol, TRUE));
1233 if (ssa)
1234 {
1235 ScriptStringCPtoX(ssa, scol, FALSE, &pt3);
1236 pt3+=es->format_rect.left;
1237 }
1238 else pt3 = pt1;
1239 rc->right = max(max(pt1 , pt2),pt3);
1240 rc->left = min(min(pt1, pt2),pt3);
1241 }
1242
1243
1244 static inline void text_buffer_changed(EDITSTATE *es)
1245 {
1246 es->text_length = (UINT)-1;
1247
1248 HeapFree( GetProcessHeap(), 0, es->logAttr );
1249 es->logAttr = NULL;
1250 EDIT_InvalidateUniscribeData(es);
1251 }
1252
1253 /*********************************************************************
1254 * EDIT_LockBuffer
1255 *
1256 */
1257 static void EDIT_LockBuffer(EDITSTATE *es)
1258 {
1259 if (!es->text) {
1260
1261 if(!es->hloc32W) return;
1262
1263 if(es->hloc32A)
1264 {
1265 CHAR *textA = LocalLock(es->hloc32A);
1266 HLOCAL hloc32W_new;
1267 UINT countW_new = MultiByteToWideChar(CP_ACP, 0, textA, -1, NULL, 0);
1268 if(countW_new > es->buffer_size + 1)
1269 {
1270 UINT alloc_size = ROUND_TO_GROW(countW_new * sizeof(WCHAR));
1271 TRACE("Resizing 32-bit UNICODE buffer from %d+1 to %d WCHARs\n", es->buffer_size, countW_new);
1272 hloc32W_new = LocalReAlloc(es->hloc32W, alloc_size, LMEM_MOVEABLE | LMEM_ZEROINIT);
1273 if(hloc32W_new)
1274 {
1275 es->hloc32W = hloc32W_new;
1276 es->buffer_size = LocalSize(hloc32W_new)/sizeof(WCHAR) - 1;
1277 TRACE("Real new size %d+1 WCHARs\n", es->buffer_size);
1278 }
1279 else
1280 WARN("FAILED! Will synchronize partially\n");
1281 }
1282 es->text = LocalLock(es->hloc32W);
1283 MultiByteToWideChar(CP_ACP, 0, textA, -1, es->text, es->buffer_size + 1);
1284 LocalUnlock(es->hloc32A);
1285 }
1286 else es->text = LocalLock(es->hloc32W);
1287 }
1288 if(es->flags & EF_APP_HAS_HANDLE) text_buffer_changed(es);
1289 es->lock_count++;
1290 }
1291
1292
1293 /*********************************************************************
1294 *
1295 * EDIT_UnlockBuffer
1296 *
1297 */
1298 static void EDIT_UnlockBuffer(EDITSTATE *es, BOOL force)
1299 {
1300
1301 /* Edit window might be already destroyed */
1302 if(!IsWindow(es->hwndSelf))
1303 {
1304 WARN("edit hwnd %p already destroyed\n", es->hwndSelf);
1305 return;
1306 }
1307
1308 if (!es->lock_count) {
1309 ERR("lock_count == 0 ... please report\n");
1310 return;
1311 }
1312 if (!es->text) {
1313 ERR("es->text == 0 ... please report\n");
1314 return;
1315 }
1316
1317 if (force || (es->lock_count == 1)) {
1318 if (es->hloc32W) {
1319 UINT countA = 0;
1320 UINT countW = get_text_length(es) + 1;
1321
1322 if(es->hloc32A)
1323 {
1324 UINT countA_new = WideCharToMultiByte(CP_ACP, 0, es->text, countW, NULL, 0, NULL, NULL);
1325 TRACE("Synchronizing with 32-bit ANSI buffer\n");
1326 TRACE("%d WCHARs translated to %d bytes\n", countW, countA_new);
1327 countA = LocalSize(es->hloc32A);
1328 if(countA_new > countA)
1329 {
1330 HLOCAL hloc32A_new;
1331 UINT alloc_size = ROUND_TO_GROW(countA_new);
1332 TRACE("Resizing 32-bit ANSI buffer from %d to %d bytes\n", countA, alloc_size);
1333 hloc32A_new = LocalReAlloc(es->hloc32A, alloc_size, LMEM_MOVEABLE | LMEM_ZEROINIT);
1334 if(hloc32A_new)
1335 {
1336 es->hloc32A = hloc32A_new;
1337 countA = LocalSize(hloc32A_new);
1338 TRACE("Real new size %d bytes\n", countA);
1339 }
1340 else
1341 WARN("FAILED! Will synchronize partially\n");
1342 }
1343 WideCharToMultiByte(CP_ACP, 0, es->text, countW,
1344 LocalLock(es->hloc32A), countA, NULL, NULL);
1345 LocalUnlock(es->hloc32A);
1346 }
1347
1348 LocalUnlock(es->hloc32W);
1349 es->text = NULL;
1350 }
1351 else {
1352 ERR("no buffer ... please report\n");
1353 return;
1354 }
1355 }
1356 es->lock_count--;
1357 }
1358
1359
1360 /*********************************************************************
1361 *
1362 * EDIT_MakeFit
1363 *
1364 * Try to fit size + 1 characters in the buffer.
1365 */
1366 static BOOL EDIT_MakeFit(EDITSTATE *es, UINT size)
1367 {
1368 HLOCAL hNew32W;
1369
1370 if (size <= es->buffer_size)
1371 return TRUE;
1372
1373 TRACE("trying to ReAlloc to %d+1 characters\n", size);
1374
1375 /* Force edit to unlock it's buffer. es->text now NULL */
1376 EDIT_UnlockBuffer(es, TRUE);
1377
1378 if (es->hloc32W) {
1379 UINT alloc_size = ROUND_TO_GROW((size + 1) * sizeof(WCHAR));
1380 if ((hNew32W = LocalReAlloc(es->hloc32W, alloc_size, LMEM_MOVEABLE | LMEM_ZEROINIT))) {
1381 TRACE("Old 32 bit handle %p, new handle %p\n", es->hloc32W, hNew32W);
1382 es->hloc32W = hNew32W;
1383 es->buffer_size = LocalSize(hNew32W)/sizeof(WCHAR) - 1;
1384 }
1385 }
1386
1387 EDIT_LockBuffer(es);
1388
1389 if (es->buffer_size < size) {
1390 WARN("FAILED ! We now have %d+1\n", es->buffer_size);
1391 EDIT_NOTIFY_PARENT(es, EN_ERRSPACE);
1392 return FALSE;
1393 } else {
1394 TRACE("We now have %d+1\n", es->buffer_size);
1395 return TRUE;
1396 }
1397 }
1398
1399
1400 /*********************************************************************
1401 *
1402 * EDIT_MakeUndoFit
1403 *
1404 * Try to fit size + 1 bytes in the undo buffer.
1405 *
1406 */
1407 static BOOL EDIT_MakeUndoFit(EDITSTATE *es, UINT size)
1408 {
1409 UINT alloc_size;
1410
1411 if (size <= es->undo_buffer_size)
1412 return TRUE;
1413
1414 TRACE("trying to ReAlloc to %d+1\n", size);
1415
1416 alloc_size = ROUND_TO_GROW((size + 1) * sizeof(WCHAR));
1417 if ((es->undo_text = HeapReAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, es->undo_text, alloc_size))) {
1418 es->undo_buffer_size = alloc_size/sizeof(WCHAR) - 1;
1419 return TRUE;
1420 }
1421 else
1422 {
1423 WARN("FAILED ! We now have %d+1\n", es->undo_buffer_size);
1424 return FALSE;
1425 }
1426 }
1427
1428
1429 /*********************************************************************
1430 *
1431 * EDIT_UpdateTextRegion
1432 *
1433 */
1434 static void EDIT_UpdateTextRegion(EDITSTATE *es, HRGN hrgn, BOOL bErase)
1435 {
1436 if (es->flags & EF_UPDATE) {
1437 es->flags &= ~EF_UPDATE;
1438 EDIT_NOTIFY_PARENT(es, EN_UPDATE);
1439 }
1440 InvalidateRgn(es->hwndSelf, hrgn, bErase);
1441 }
1442
1443
1444 /*********************************************************************
1445 *
1446 * EDIT_UpdateText
1447 *
1448 */
1449 static void EDIT_UpdateText(EDITSTATE *es, const RECT *rc, BOOL bErase)
1450 {
1451 if (es->flags & EF_UPDATE) {
1452 es->flags &= ~EF_UPDATE;
1453 EDIT_NOTIFY_PARENT(es, EN_UPDATE);
1454 }
1455 InvalidateRect(es->hwndSelf, rc, bErase);
1456 }
1457
1458 /*********************************************************************
1459 *
1460 * EDIT_SL_InvalidateText
1461 *
1462 * Called from EDIT_InvalidateText().
1463 * Does the job for single-line controls only.
1464 *
1465 */
1466 static void EDIT_SL_InvalidateText(EDITSTATE *es, INT start, INT end)
1467 {
1468 RECT line_rect;
1469 RECT rc;
1470
1471 EDIT_GetLineRect(es, 0, start, end, &line_rect);
1472 if (IntersectRect(&rc, &line_rect, &es->format_rect))
1473 EDIT_UpdateText(es, &rc, TRUE);
1474 }
1475
1476 /*********************************************************************
1477 *
1478 * EDIT_ML_InvalidateText
1479 *
1480 * Called from EDIT_InvalidateText().
1481 * Does the job for multi-line controls only.
1482 *
1483 */
1484 static void EDIT_ML_InvalidateText(EDITSTATE *es, INT start, INT end)
1485 {
1486 INT vlc = get_vertical_line_count(es);
1487 INT sl = EDIT_EM_LineFromChar(es, start);
1488 INT el = EDIT_EM_LineFromChar(es, end);
1489 INT sc;
1490 INT ec;
1491 RECT rc1;
1492 RECT rcWnd;
1493 RECT rcLine;
1494 RECT rcUpdate;
1495 INT l;
1496
1497 if ((el < es->y_offset) || (sl > es->y_offset + vlc))
1498 return;
1499
1500 sc = start - EDIT_EM_LineIndex(es, sl);
1501 ec = end - EDIT_EM_LineIndex(es, el);
1502 if (sl < es->y_offset) {
1503 sl = es->y_offset;
1504 sc = 0;
1505 }
1506 if (el > es->y_offset + vlc) {
1507 el = es->y_offset + vlc;
1508 ec = EDIT_EM_LineLength(es, EDIT_EM_LineIndex(es, el));
1509 }
1510 GetClientRect(es->hwndSelf, &rc1);
1511 IntersectRect(&rcWnd, &rc1, &es->format_rect);
1512 if (sl == el) {
1513 EDIT_GetLineRect(es, sl, sc, ec, &rcLine);
1514 if (IntersectRect(&rcUpdate, &rcWnd, &rcLine))
1515 EDIT_UpdateText(es, &rcUpdate, TRUE);
1516 } else {
1517 EDIT_GetLineRect(es, sl, sc,
1518 EDIT_EM_LineLength(es,
1519 EDIT_EM_LineIndex(es, sl)),
1520 &rcLine);
1521 if (IntersectRect(&rcUpdate, &rcWnd, &rcLine))
1522 EDIT_UpdateText(es, &rcUpdate, TRUE);
1523 for (l = sl + 1 ; l < el ; l++) {
1524 EDIT_GetLineRect(es, l, 0,
1525 EDIT_EM_LineLength(es,
1526 EDIT_EM_LineIndex(es, l)),
1527 &rcLine);
1528 if (IntersectRect(&rcUpdate, &rcWnd, &rcLine))
1529 EDIT_UpdateText(es, &rcUpdate, TRUE);
1530 }
1531 EDIT_GetLineRect(es, el, 0, ec, &rcLine);
1532 if (IntersectRect(&rcUpdate, &rcWnd, &rcLine))
1533 EDIT_UpdateText(es, &rcUpdate, TRUE);
1534 }
1535 }
1536
1537
1538 /*********************************************************************
1539 *
1540 * EDIT_InvalidateText
1541 *
1542 * Invalidate the text from offset start up to, but not including,
1543 * offset end. Useful for (re)painting the selection.
1544 * Regions outside the linewidth are not invalidated.
1545 * end == -1 means end == TextLength.
1546 * start and end need not be ordered.
1547 *
1548 */
1549 static void EDIT_InvalidateText(EDITSTATE *es, INT start, INT end)
1550 {
1551 if (end == start)
1552 return;
1553
1554 if (end == -1)
1555 end = get_text_length(es);
1556
1557 if (end < start) {
1558 INT tmp = start;
1559 start = end;
1560 end = tmp;
1561 }
1562
1563 if (es->style & ES_MULTILINE)
1564 EDIT_ML_InvalidateText(es, start, end);
1565 else
1566 EDIT_SL_InvalidateText(es, start, end);
1567 }
1568
1569
1570 /*********************************************************************
1571 *
1572 * EDIT_EM_SetSel
1573 *
1574 * note: unlike the specs say: the order of start and end
1575 * _is_ preserved in Windows. (i.e. start can be > end)
1576 * In other words: this handler is OK
1577 *
1578 */
1579 static void EDIT_EM_SetSel(EDITSTATE *es, UINT start, UINT end, BOOL after_wrap)
1580 {
1581 UINT old_start = es->selection_start;
1582 UINT old_end = es->selection_end;
1583 UINT len = get_text_length(es);
1584
1585 if (start == (UINT)-1) {
1586 start = es->selection_end;
1587 end = es->selection_end;
1588 } else {
1589 start = min(start, len);
1590 end = min(end, len);
1591 }
1592 es->selection_start = start;
1593 es->selection_end = end;
1594 if (after_wrap)
1595 es->flags |= EF_AFTER_WRAP;
1596 else
1597 es->flags &= ~EF_AFTER_WRAP;
1598 /* Compute the necessary invalidation region. */
1599 /* Note that we don't need to invalidate regions which have
1600 * "never" been selected, or those which are "still" selected.
1601 * In fact, every time we hit a selection boundary, we can
1602 * *toggle* whether we need to invalidate. Thus we can optimize by
1603 * *sorting* the interval endpoints. Let's assume that we sort them
1604 * in this order:
1605 * start <= end <= old_start <= old_end
1606 * Knuth 5.3.1 (p 183) assures us that this can be done optimally
1607 * in 5 comparisons; i.e. it is impossible to do better than the
1608 * following: */
1609 ORDER_UINT(end, old_end);
1610 ORDER_UINT(start, old_start);
1611 ORDER_UINT(old_start, old_end);
1612 ORDER_UINT(start, end);
1613 /* Note that at this point 'end' and 'old_start' are not in order, but
1614 * start is definitely the min. and old_end is definitely the max. */
1615 if (end != old_start)
1616 {
1617 /*
1618 * One can also do
1619 * ORDER_UINT32(end, old_start);
1620 * EDIT_InvalidateText(es, start, end);
1621 * EDIT_InvalidateText(es, old_start, old_end);
1622 * in place of the following if statement.
1623 * (That would complete the optimal five-comparison four-element sort.)
1624 */
1625 if (old_start > end )
1626 {
1627 EDIT_InvalidateText(es, start, end);
1628 EDIT_InvalidateText(es, old_start, old_end);
1629 }
1630 else
1631 {
1632 EDIT_InvalidateText(es, start, old_start);
1633 EDIT_InvalidateText(es, end, old_end);
1634 }
1635 }
1636 else EDIT_InvalidateText(es, start, old_end);
1637 }
1638
1639
1640 /*********************************************************************
1641 *
1642 * EDIT_UpdateScrollInfo
1643 *
1644 */
1645 static void EDIT_UpdateScrollInfo(EDITSTATE *es)
1646 {
1647 if ((es->style & WS_VSCROLL) && !(es->flags & EF_VSCROLL_TRACK))
1648 {
1649 SCROLLINFO si;
1650 si.cbSize = sizeof(SCROLLINFO);
1651 si.fMask = SIF_PAGE | SIF_POS | SIF_RANGE | SIF_DISABLENOSCROLL;
1652 si.nMin = 0;
1653 si.nMax = es->line_count - 1;
1654 si.nPage = (es->format_rect.bottom - es->format_rect.top) / es->line_height;
1655 si.nPos = es->y_offset;
1656 TRACE("SB_VERT, nMin=%d, nMax=%d, nPage=%d, nPos=%d\n",
1657 si.nMin, si.nMax, si.nPage, si.nPos);
1658 SetScrollInfo(es->hwndSelf, SB_VERT, &si, TRUE);
1659 }
1660
1661 if ((es->style & WS_HSCROLL) && !(es->flags & EF_HSCROLL_TRACK))
1662 {
1663 SCROLLINFO si;
1664 si.cbSize = sizeof(SCROLLINFO);
1665 si.fMask = SIF_PAGE | SIF_POS | SIF_RANGE | SIF_DISABLENOSCROLL;
1666 si.nMin = 0;
1667 si.nMax = es->text_width - 1;
1668 si.nPage = es->format_rect.right - es->format_rect.left;
1669 si.nPos = es->x_offset;
1670 TRACE("SB_HORZ, nMin=%d, nMax=%d, nPage=%d, nPos=%d\n",
1671 si.nMin, si.nMax, si.nPage, si.nPos);
1672 SetScrollInfo(es->hwndSelf, SB_HORZ, &si, TRUE);
1673 }
1674 }
1675
1676
1677 /*********************************************************************
1678 *
1679 * EDIT_EM_LineScroll_internal
1680 *
1681 * Version of EDIT_EM_LineScroll for internal use.
1682 * It doesn't refuse if ES_MULTILINE is set and assumes that
1683 * dx is in pixels, dy - in lines.
1684 *
1685 */
1686 static BOOL EDIT_EM_LineScroll_internal(EDITSTATE *es, INT dx, INT dy)
1687 {
1688 INT nyoff;
1689 INT x_offset_in_pixels;
1690 INT lines_per_page = (es->format_rect.bottom - es->format_rect.top) /
1691 es->line_height;
1692
1693 if (es->style & ES_MULTILINE)
1694 {
1695 x_offset_in_pixels = es->x_offset;
1696 }
1697 else
1698 {
1699 dy = 0;
1700 x_offset_in_pixels = (short)LOWORD(EDIT_EM_PosFromChar(es, es->x_offset, FALSE));
1701 }
1702
1703 if (-dx > x_offset_in_pixels)
1704 dx = -x_offset_in_pixels;
1705 if (dx > es->text_width - x_offset_in_pixels)
1706 dx = es->text_width - x_offset_in_pixels;
1707 nyoff = max(0, es->y_offset + dy);
1708 if (nyoff >= es->line_count - lines_per_page)
1709 nyoff = max(0, es->line_count - lines_per_page);
1710 dy = (es->y_offset - nyoff) * es->line_height;
1711 if (dx || dy) {
1712 RECT rc1;
1713 RECT rc;
1714
1715 es->y_offset = nyoff;
1716 if(es->style & ES_MULTILINE)
1717 es->x_offset += dx;
1718 else
1719 es->x_offset += dx / es->char_width;
1720
1721 GetClientRect(es->hwndSelf, &rc1);
1722 IntersectRect(&rc, &rc1, &es->format_rect);
1723 ScrollWindowEx(es->hwndSelf, -dx, dy,
1724 NULL, &rc, NULL, NULL, SW_INVALIDATE);
1725 /* force scroll info update */
1726 EDIT_UpdateScrollInfo(es);
1727 }
1728 if (dx && !(es->flags & EF_HSCROLL_TRACK))
1729 EDIT_NOTIFY_PARENT(es, EN_HSCROLL);
1730 if (dy && !(es->flags & EF_VSCROLL_TRACK))
1731 EDIT_NOTIFY_PARENT(es, EN_VSCROLL);
1732 return TRUE;
1733 }
1734
1735 /*********************************************************************
1736 *
1737 * EM_LINESCROLL
1738 *
1739 * NOTE: dx is in average character widths, dy - in lines;
1740 *
1741 */
1742 static BOOL EDIT_EM_LineScroll(EDITSTATE *es, INT dx, INT dy)
1743 {
1744 if (!(es->style & ES_MULTILINE))
1745 return FALSE;
1746
1747 dx *= es->char_width;
1748 return EDIT_EM_LineScroll_internal(es, dx, dy);
1749 }
1750
1751
1752 /*********************************************************************
1753 *
1754 * EM_SCROLL
1755 *
1756 */
1757 static LRESULT EDIT_EM_Scroll(EDITSTATE *es, INT action)
1758 {
1759 INT dy;
1760
1761 if (!(es->style & ES_MULTILINE))
1762 return (LRESULT)FALSE;
1763
1764 dy = 0;
1765
1766 switch (action) {
1767 case SB_LINEUP:
1768 if (es->y_offset)
1769 dy = -1;
1770 break;
1771 case SB_LINEDOWN:
1772 if (es->y_offset < es->line_count - 1)
1773 dy = 1;
1774 break;
1775 case SB_PAGEUP:
1776 if (es->y_offset)
1777 dy = -(es->format_rect.bottom - es->format_rect.top) / es->line_height;
1778 break;
1779 case SB_PAGEDOWN:
1780 if (es->y_offset < es->line_count - 1)
1781 dy = (es->format_rect.bottom - es->format_rect.top) / es->line_height;
1782 break;
1783 default:
1784 return (LRESULT)FALSE;
1785 }
1786 if (dy) {
1787 INT vlc = get_vertical_line_count(es);
1788 /* check if we are going to move too far */
1789 if(es->y_offset + dy > es->line_count - vlc)
1790 dy = max(es->line_count - vlc, 0) - es->y_offset;
1791
1792 /* Notification is done in EDIT_EM_LineScroll */
1793 if(dy) {
1794 EDIT_EM_LineScroll(es, 0, dy);
1795 return MAKELONG(dy, TRUE);
1796 }
1797
1798 }
1799 return (LRESULT)FALSE;
1800 }
1801
1802
1803 /*********************************************************************
1804 *
1805 * EDIT_SetCaretPos
1806 *
1807 */
1808 static void EDIT_SetCaretPos(EDITSTATE *es, INT pos,
1809 BOOL after_wrap)
1810 {
1811 LRESULT res = EDIT_EM_PosFromChar(es, pos, after_wrap);
1812 TRACE("%d - %dx%d\n", pos, (short)LOWORD(res), (short)HIWORD(res));
1813 SetCaretPos((short)LOWORD(res), (short)HIWORD(res));
1814 }
1815
1816
1817 /*********************************************************************
1818 *
1819 * EM_SCROLLCARET
1820 *
1821 */
1822 static void EDIT_EM_ScrollCaret(EDITSTATE *es)
1823 {
1824 if (es->style & ES_MULTILINE) {
1825 INT l;
1826 INT vlc;
1827 INT ww;
1828 INT cw = es->char_width;
1829 INT x;
1830 INT dy = 0;
1831 INT dx = 0;
1832
1833 l = EDIT_EM_LineFromChar(es, es->selection_end);
1834 x = (short)LOWORD(EDIT_EM_PosFromChar(es, es->selection_end, es->flags & EF_AFTER_WRAP));
1835 vlc = get_vertical_line_count(es);
1836 if (l >= es->y_offset + vlc)
1837 dy = l - vlc + 1 - es->y_offset;
1838 if (l < es->y_offset)
1839 dy = l - es->y_offset;
1840 ww = es->format_rect.right - es->format_rect.left;
1841 if (x < es->format_rect.left)
1842 dx = x - es->format_rect.left - ww / HSCROLL_FRACTION / cw * cw;
1843 if (x > es->format_rect.right)
1844 dx = x - es->format_rect.left - (HSCROLL_FRACTION - 1) * ww / HSCROLL_FRACTION / cw * cw;
1845 if (dy || dx || (es->y_offset && (es->line_count - es->y_offset < vlc)))
1846 {
1847 /* check if we are going to move too far */
1848 if(es->x_offset + dx + ww > es->text_width)
1849 dx = es->text_width - ww - es->x_offset;
1850 if(dx || dy || (es->y_offset && (es->line_count - es->y_offset < vlc)))
1851 EDIT_EM_LineScroll_internal(es, dx, dy);
1852 }
1853 } else {
1854 INT x;
1855 INT goal;
1856 INT format_width;
1857
1858 x = (short)LOWORD(EDIT_EM_PosFromChar(es, es->selection_end, FALSE));
1859 format_width = es->format_rect.right - es->format_rect.left;
1860 if (x < es->format_rect.left) {
1861 goal = es->format_rect.left + format_width / HSCROLL_FRACTION;
1862 do {
1863 es->x_offset--;
1864 x = (short)LOWORD(EDIT_EM_PosFromChar(es, es->selection_end, FALSE));
1865 } while ((x < goal) && es->x_offset);
1866 /* FIXME: use ScrollWindow() somehow to improve performance */
1867 EDIT_UpdateText(es, NULL, TRUE);
1868 } else if (x > es->format_rect.right) {
1869 INT x_last;
1870 INT len = get_text_length(es);
1871 goal = es->format_rect.right - format_width / HSCROLL_FRACTION;
1872 do {
1873 es->x_offset++;
1874 x = (short)LOWORD(EDIT_EM_PosFromChar(es, es->selection_end, FALSE));
1875 x_last = (short)LOWORD(EDIT_EM_PosFromChar(es, len, FALSE));
1876 } while ((x > goal) && (x_last > es->format_rect.right));
1877 /* FIXME: use ScrollWindow() somehow to improve performance */
1878 EDIT_UpdateText(es, NULL, TRUE);
1879 }
1880 }
1881
1882 if(es->flags & EF_FOCUSED)
1883 EDIT_SetCaretPos(es, es->selection_end, es->flags & EF_AFTER_WRAP);
1884 }
1885
1886
1887 /*********************************************************************
1888 *
1889 * EDIT_MoveBackward
1890 *
1891 */
1892 static void EDIT_MoveBackward(EDITSTATE *es, BOOL extend)
1893 {
1894 INT e = es->selection_end;
1895
1896 if (e) {
1897 e--;
1898 if ((es->style & ES_MULTILINE) && e &&
1899 (es->text[e - 1] == '\r') && (es->text[e] == '\n')) {
1900 e--;
1901 if (e && (es->text[e - 1] == '\r'))
1902 e--;
1903 }
1904 }
1905 EDIT_EM_SetSel(es, extend ? es->selection_start : e, e, FALSE);
1906 EDIT_EM_ScrollCaret(es);
1907 }
1908
1909
1910 /*********************************************************************
1911 *
1912 * EDIT_MoveDown_ML
1913 *
1914 * Only for multi line controls
1915 * Move the caret one line down, on a column with the nearest
1916 * x coordinate on the screen (might be a different column).
1917 *
1918 */
1919 static void EDIT_MoveDown_ML(EDITSTATE *es, BOOL extend)
1920 {
1921 INT s = es->selection_start;
1922 INT e = es->selection_end;
1923 BOOL after_wrap = (es->flags & EF_AFTER_WRAP);
1924 LRESULT pos = EDIT_EM_PosFromChar(es, e, after_wrap);
1925 INT x = (short)LOWORD(pos);
1926 INT y = (short)HIWORD(pos);
1927
1928 e = EDIT_CharFromPos(es, x, y + es->line_height, &after_wrap);
1929 if (!extend)
1930 s = e;
1931 EDIT_EM_SetSel(es, s, e, after_wrap);
1932 EDIT_EM_ScrollCaret(es);
1933 }
1934
1935
1936 /*********************************************************************
1937 *
1938 * EDIT_MoveEnd
1939 *
1940 */
1941 static void EDIT_MoveEnd(EDITSTATE *es, BOOL extend, BOOL ctrl)
1942 {
1943 BOOL after_wrap = FALSE;
1944 INT e;
1945
1946 /* Pass a high value in x to make sure of receiving the end of the line */
1947 if (!ctrl && (es->style & ES_MULTILINE))
1948 e = EDIT_CharFromPos(es, 0x3fffffff,
1949 HIWORD(EDIT_EM_PosFromChar(es, es->selection_end, es->flags & EF_AFTER_WRAP)), &after_wrap);
1950 else
1951 e = get_text_length(es);
1952 EDIT_EM_SetSel(es, extend ? es->selection_start : e, e, after_wrap);
1953 EDIT_EM_ScrollCaret(es);
1954 }
1955
1956
1957 /*********************************************************************
1958 *
1959 * EDIT_MoveForward
1960 *
1961 */
1962 static void EDIT_MoveForward(EDITSTATE *es, BOOL extend)
1963 {
1964 INT e = es->selection_end;
1965
1966 if (es->text[e]) {
1967 e++;
1968 if ((es->style & ES_MULTILINE) && (es->text[e - 1] == '\r')) {
1969 if (es->text[e] == '\n')
1970 e++;
1971 else if ((es->text[e] == '\r') && (es->text[e + 1] == '\n'))
1972 e += 2;
1973 }
1974 }
1975 EDIT_EM_SetSel(es, extend ? es->selection_start : e, e, FALSE);
1976 EDIT_EM_ScrollCaret(es);
1977 }
1978
1979
1980 /*********************************************************************
1981 *
1982 * EDIT_MoveHome
1983 *
1984 * Home key: move to beginning of line.
1985 *
1986 */
1987 static void EDIT_MoveHome(EDITSTATE *es, BOOL extend, BOOL ctrl)
1988 {
1989 INT e;
1990
1991 /* Pass the x_offset in x to make sure of receiving the first position of the line */
1992 if (!ctrl && (es->style & ES_MULTILINE))
1993 e = EDIT_CharFromPos(es, -es->x_offset,
1994 HIWORD(EDIT_EM_PosFromChar(es, es->selection_end, es->flags & EF_AFTER_WRAP)), NULL);
1995 else
1996 e = 0;
1997 EDIT_EM_SetSel(es, extend ? es->selection_start : e, e, FALSE);
1998 EDIT_EM_ScrollCaret(es);
1999 }
2000
2001
2002 /*********************************************************************
2003 *
2004 * EDIT_MovePageDown_ML
2005 *
2006 * Only for multi line controls
2007 * Move the caret one page down, on a column with the nearest
2008 * x coordinate on the screen (might be a different column).
2009 *
2010 */
2011 static void EDIT_MovePageDown_ML(EDITSTATE *es, BOOL extend)
2012 {
2013 INT s = es->selection_start;
2014 INT e = es->selection_end;
2015 BOOL after_wrap = (es->flags & EF_AFTER_WRAP);
2016 LRESULT pos = EDIT_EM_PosFromChar(es, e, after_wrap);
2017 INT x = (short)LOWORD(pos);
2018 INT y = (short)HIWORD(pos);
2019
2020 e = EDIT_CharFromPos(es, x,
2021 y + (es->format_rect.bottom - es->format_rect.top),
2022 &after_wrap);
2023 if (!extend)
2024 s = e;
2025 EDIT_EM_SetSel(es, s, e, after_wrap);
2026 EDIT_EM_ScrollCaret(es);
2027 }
2028
2029
2030 /*********************************************************************
2031 *
2032 * EDIT_MovePageUp_ML
2033 *
2034 * Only for multi line controls
2035 * Move the caret one page up, on a column with the nearest
2036 * x coordinate on the screen (might be a different column).
2037 *
2038 */
2039 static void EDIT_MovePageUp_ML(EDITSTATE *es, BOOL extend)
2040 {
2041 INT s = es->selection_start;
2042 INT e = es->selection_end;
2043 BOOL after_wrap = (es->flags & EF_AFTER_WRAP);
2044 LRESULT pos = EDIT_EM_PosFromChar(es, e, after_wrap);
2045 INT x = (short)LOWORD(pos);
2046 INT y = (short)HIWORD(pos);
2047
2048 e = EDIT_CharFromPos(es, x,
2049 y - (es->format_rect.bottom - es->format_rect.top),
2050 &after_wrap);
2051 if (!extend)
2052 s = e;
2053 EDIT_EM_SetSel(es, s, e, after_wrap);
2054 EDIT_EM_ScrollCaret(es);
2055 }
2056
2057
2058 /*********************************************************************
2059 *
2060 * EDIT_MoveUp_ML
2061 *
2062 * Only for multi line controls
2063 * Move the caret one line up, on a column with the nearest
2064 * x coordinate on the screen (might be a different column).
2065 *
2066 */
2067 static void EDIT_MoveUp_ML(EDITSTATE *es, BOOL extend)
2068 {
2069 INT s = es->selection_start;
2070 INT e = es->selection_end;
2071 BOOL after_wrap = (es->flags & EF_AFTER_WRAP);
2072 LRESULT pos = EDIT_EM_PosFromChar(es, e, after_wrap);
2073 INT x = (short)LOWORD(pos);
2074 INT y = (short)HIWORD(pos);
2075
2076 e = EDIT_CharFromPos(es, x, y - es->line_height, &after_wrap);
2077 if (!extend)
2078 s = e;
2079 EDIT_EM_SetSel(es, s, e, after_wrap);
2080 EDIT_EM_ScrollCaret(es);
2081 }
2082
2083
2084 /*********************************************************************
2085 *
2086 * EDIT_MoveWordBackward
2087 *
2088 */
2089 static void EDIT_MoveWordBackward(EDITSTATE *es, BOOL extend)
2090 {
2091 INT s = es->selection_start;
2092 INT e = es->selection_end;
2093 INT l;
2094 INT ll;
2095 INT li;
2096
2097 l = EDIT_EM_LineFromChar(es, e);
2098 ll = EDIT_EM_LineLength(es, e);
2099 li = EDIT_EM_LineIndex(es, l);
2100 if (e - li == 0) {
2101 if (l) {
2102 li = EDIT_EM_LineIndex(es, l - 1);
2103 e = li + EDIT_EM_LineLength(es, li);
2104 }
2105 } else {
2106 e = li + EDIT_CallWordBreakProc(es, li, e - li, ll, WB_LEFT);
2107 }
2108 if (!extend)
2109 s = e;
2110 EDIT_EM_SetSel(es, s, e, FALSE);
2111 EDIT_EM_ScrollCaret(es);
2112 }
2113
2114
2115 /*********************************************************************
2116 *
2117 * EDIT_MoveWordForward
2118 *
2119 */
2120 static void EDIT_MoveWordForward(EDITSTATE *es, BOOL extend)
2121 {
2122 INT s = es->selection_start;
2123 INT e = es->selection_end;
2124 INT l;
2125 INT ll;
2126 INT li;
2127
2128 l = EDIT_EM_LineFromChar(es, e);
2129 ll = EDIT_EM_LineLength(es, e);
2130 li = EDIT_EM_LineIndex(es, l);
2131 if (e - li == ll) {
2132 if ((es->style & ES_MULTILINE) && (l != es->line_count - 1))
2133 e = EDIT_EM_LineIndex(es, l + 1);
2134 } else {
2135 e = li + EDIT_CallWordBreakProc(es,
2136 li, e - li + 1, ll, WB_RIGHT);
2137 }
2138 if (!extend)
2139 s = e;
2140 EDIT_EM_SetSel(es, s, e, FALSE);
2141 EDIT_EM_ScrollCaret(es);
2142 }
2143
2144
2145 /*********************************************************************
2146 *
2147 * EDIT_PaintText
2148 *
2149 */
2150 static INT EDIT_PaintText(EDITSTATE *es, HDC dc, INT x, INT y, INT line, INT col, INT count, BOOL rev)
2151 {
2152 COLORREF BkColor;
2153 COLORREF TextColor;
2154 LOGFONTW underline_font;
2155 HFONT hUnderline = 0;
2156 HFONT old_font = 0;
2157 INT ret;
2158 INT li;
2159 INT BkMode;
2160 SIZE size;
2161
2162 if (!count)
2163 return 0;
2164 BkMode = GetBkMode(dc);
2165 BkColor = GetBkColor(dc);
2166 TextColor = GetTextColor(dc);
2167 if (rev) {
2168 if (es->composition_len == 0)
2169 {
2170 SetBkColor(dc, GetSysColor(COLOR_HIGHLIGHT));
2171 SetTextColor(dc, GetSysColor(COLOR_HIGHLIGHTTEXT));
2172 SetBkMode( dc, OPAQUE);
2173 }
2174 else
2175 {
2176 HFONT current = GetCurrentObject(dc,OBJ_FONT);
2177 GetObjectW(current,sizeof(LOGFONTW),&underline_font);
2178 underline_font.lfUnderline = TRUE;
2179 hUnderline = CreateFontIndirectW(&underline_font);
2180 old_font = SelectObject(dc,hUnderline);
2181 }
2182 }
2183 li = EDIT_EM_LineIndex(es, line);
2184 if (es->style & ES_MULTILINE) {
2185 ret = (INT)LOWORD(TabbedTextOutW(dc, x, y, es->text + li + col, count,
2186 es->tabs_count, es->tabs, es->format_rect.left - es->x_offset));
2187 } else {
2188 LPWSTR text = es->text;
2189 TextOutW(dc, x, y, text + li + col, count);
2190 GetTextExtentPoint32W(dc, text + li + col, count, &size);
2191 ret = size.cx;
2192 if (es->style & ES_PASSWORD)
2193 HeapFree(GetProcessHeap(), 0, text);
2194 }
2195 if (rev) {
2196 if (es->composition_len == 0)
2197 {
2198 SetBkColor(dc, BkColor);
2199 SetTextColor(dc, TextColor);
2200 SetBkMode( dc, BkMode);
2201 }
2202 else
2203 {
2204 if (old_font)
2205 SelectObject(dc,old_font);
2206 if (hUnderline)
2207 DeleteObject(hUnderline);
2208 }
2209 }
2210 return ret;
2211 }
2212
2213
2214 /*********************************************************************
2215 *
2216 * EDIT_PaintLine
2217 *
2218 */
2219 static void EDIT_PaintLine(EDITSTATE *es, HDC dc, INT line, BOOL rev)
2220 {
2221 INT s = 0;
2222 INT e = 0;
2223 INT li = 0;
2224 INT ll = 0;
2225 INT x;
2226 INT y;
2227 LRESULT pos;
2228 SCRIPT_STRING_ANALYSIS ssa;
2229
2230 if (es->style & ES_MULTILINE) {
2231 INT vlc = get_vertical_line_count(es);
2232
2233 if ((line < es->y_offset) || (line > es->y_offset + vlc) || (line >= es->line_count))
2234 return;
2235 } else if (line)
2236 return;
2237
2238 TRACE("line=%d\n", line);
2239
2240 ssa = EDIT_UpdateUniscribeData(es, dc, line);
2241 pos = EDIT_EM_PosFromChar(es, EDIT_EM_LineIndex(es, line), FALSE);
2242 x = (short)LOWORD(pos);
2243 y = (short)HIWORD(pos);
2244
2245 if (es->style & ES_MULTILINE)
2246 {
2247 int line_idx = line;
2248 x = -es->x_offset;
2249 if (es->style & ES_RIGHT || es->style & ES_CENTER)
2250 {
2251 LINEDEF *line_def = es->first_line_def;
2252 int w, lw;
2253
2254 while (line_def && line_idx)
2255 {
2256 line_def = line_def->next;
2257 line_idx--;
2258 }
2259 w = es->format_rect.right - es->format_rect.left;
2260 lw = line_def->width;
2261
2262 if (es->style & ES_RIGHT)
2263 x = w - (lw - x);
2264 else if (es->style & ES_CENTER)
2265 x += (w - lw) / 2;
2266 }
2267 x += es->format_rect.left;
2268 }
2269
2270 if (rev)
2271 {
2272 li = EDIT_EM_LineIndex(es, line);
2273 ll = EDIT_EM_LineLength(es, li);
2274 s = min(es->selection_start, es->selection_end);
2275 e = max(es->selection_start, es->selection_end);
2276 s = min(li + ll, max(li, s));
2277 e = min(li + ll, max(li, e));
2278 }
2279
2280 if (ssa)
2281 ScriptStringOut(ssa, x, y, 0, &es->format_rect, s - li, e - li, FALSE);
2282 else if (rev && (s != e) &&
2283 ((es->flags & EF_FOCUSED) || (es->style & ES_NOHIDESEL))) {
2284 x += EDIT_PaintText(es, dc, x, y, line, 0, s - li, FALSE);
2285 x += EDIT_PaintText(es, dc, x, y, line, s - li, e - s, TRUE);
2286 x += EDIT_PaintText(es, dc, x, y, line, e - li, li + ll - e, FALSE);
2287 } else
2288 x += EDIT_PaintText(es, dc, x, y, line, 0, ll, FALSE);
2289 }
2290
2291
2292 /*********************************************************************
2293 *
2294 * EDIT_AdjustFormatRect
2295 *
2296 * Adjusts the format rectangle for the current font and the
2297 * current client rectangle.
2298 *
2299 */
2300 static void EDIT_AdjustFormatRect(EDITSTATE *es)
2301 {
2302 RECT ClientRect;
2303
2304 es->format_rect.right = max(es->format_rect.right, es->format_rect.left + es->char_width);
2305 if (es->style & ES_MULTILINE)
2306 {
2307 INT fw, vlc, max_x_offset, max_y_offset;
2308
2309 vlc = get_vertical_line_count(es);
2310 es->format_rect.bottom = es->format_rect.top + vlc * es->line_height;
2311
2312 /* correct es->x_offset */
2313 fw = es->format_rect.right - es->format_rect.left;
2314 max_x_offset = es->text_width - fw;
2315 if(max_x_offset < 0) max_x_offset = 0;
2316 if(es->x_offset > max_x_offset)
2317 es->x_offset = max_x_offset;
2318
2319 /* correct es->y_offset */
2320 max_y_offset = es->line_count - vlc;
2321 if(max_y_offset < 0) max_y_offset = 0;
2322 if(es->y_offset > max_y_offset)
2323 es->y_offset = max_y_offset;
2324
2325 /* force scroll info update */
2326 EDIT_UpdateScrollInfo(es);
2327 }
2328 else
2329 /* Windows doesn't care to fix text placement for SL controls */
2330 es->format_rect.bottom = es->format_rect.top + es->line_height;
2331
2332 /* Always stay within the client area */
2333 GetClientRect(es->hwndSelf, &ClientRect);
2334 es->format_rect.bottom = min(es->format_rect.bottom, ClientRect.bottom);
2335
2336 if ((es->style & ES_MULTILINE) && !(es->style & ES_AUTOHSCROLL))
2337 EDIT_BuildLineDefs_ML(es, 0, get_text_length(es), 0, NULL);
2338
2339 EDIT_SetCaretPos(es, es->selection_end, es->flags & EF_AFTER_WRAP);
2340 }
2341
2342
2343 /*********************************************************************
2344 *
2345 * EDIT_SetRectNP
2346 *
2347 * note: this is not (exactly) the handler called on EM_SETRECTNP
2348 * it is also used to set the rect of a single line control
2349 *
2350 */
2351 static void EDIT_SetRectNP(EDITSTATE *es, const RECT *rc)
2352 {
2353 LONG_PTR ExStyle;
2354 INT bw, bh;
2355 ExStyle = GetWindowLongPtrW(es->hwndSelf, GWL_EXSTYLE);
2356
2357 CopyRect(&es->format_rect, rc);
2358
2359 if (ExStyle & WS_EX_CLIENTEDGE) {
2360 es->format_rect.left++;
2361 es->format_rect.right--;
2362
2363 if (es->format_rect.bottom - es->format_rect.top
2364 >= es->line_height + 2)
2365 {
2366 es->format_rect.top++;
2367 es->format_rect.bottom--;
2368 }
2369 }
2370 else if (es->style & WS_BORDER) {
2371 bw = GetSystemMetrics(SM_CXBORDER) + 1;
2372 bh = GetSystemMetrics(SM_CYBORDER) + 1;
2373 es->format_rect.left += bw;
2374 es->format_rect.right -= bw;
2375 if (es->format_rect.bottom - es->format_rect.top
2376 >= es->line_height + 2 * bh)
2377 {
2378 es->format_rect.top += bh;
2379 es->format_rect.bottom -= bh;
2380 }
2381 }
2382
2383 es->format_rect.left += es->left_margin;
2384 es->format_rect.right -= es->right_margin;
2385 EDIT_AdjustFormatRect(es);
2386 }
2387
2388
2389 /*********************************************************************
2390 *
2391 * EM_CHARFROMPOS
2392 *
2393 * returns line number (not index) in high-order word of result.
2394 * NB : Q137805 is unclear about this. POINT * pointer in lParam apply
2395 * to Richedit, not to the edit control. Original documentation is valid.
2396 * FIXME: do the specs mean to return -1 if outside client area or
2397 * if outside formatting rectangle ???
2398 *
2399 */
2400 static LRESULT EDIT_EM_CharFromPos(EDITSTATE *es, INT x, INT y)
2401 {
2402 POINT pt;
2403 RECT rc;
2404 INT index;
2405
2406 pt.x = x;
2407 pt.y = y;
2408 GetClientRect(es->hwndSelf, &rc);
2409 if (!PtInRect(&rc, pt))
2410 return -1;
2411
2412 index = EDIT_CharFromPos(es, x, y, NULL);
2413 return MAKELONG(index, EDIT_EM_LineFromChar(es, index));
2414 }
2415
2416
2417 /*********************************************************************
2418 *
2419 * EM_FMTLINES
2420 *
2421 * Enable or disable soft breaks.
2422 *
2423 * This means: insert or remove the soft linebreak character (\r\r\n).
2424 * Take care to check if the text still fits the buffer after insertion.
2425 * If not, notify with EN_ERRSPACE.
2426 *
2427 */
2428 static BOOL EDIT_EM_FmtLines(EDITSTATE *es, BOOL add_eol)
2429 {
2430 es->flags &= ~EF_USE_SOFTBRK;
2431 if (add_eol) {
2432 es->flags |= EF_USE_SOFTBRK;
2433 FIXME("soft break enabled, not implemented\n");
2434 }
2435 return add_eol;
2436 }
2437
2438
2439 /*********************************************************************
2440 *
2441 * EM_GETHANDLE
2442 *
2443 * Hopefully this won't fire back at us.
2444 * We always start with a fixed buffer in the local heap.
2445 * Despite of the documentation says that the local heap is used
2446 * only if DS_LOCALEDIT flag is set, NT and 2000 always allocate
2447 * buffer on the local heap.
2448 *
2449 */
2450 static HLOCAL EDIT_EM_GetHandle(EDITSTATE *es)
2451 {
2452 HLOCAL hLocal;
2453
2454 if (!(es->style & ES_MULTILINE))
2455 return 0;
2456
2457 if(es->is_unicode)
2458 hLocal = es->hloc32W;
2459 else
2460 {
2461 if(!es->hloc32A)
2462 {
2463 CHAR *textA;
2464 UINT countA, alloc_size;
2465 TRACE("Allocating 32-bit ANSI alias buffer\n");
2466 countA = WideCharToMultiByte(CP_ACP, 0, es->text, -1, NULL, 0, NULL, NULL);
2467 alloc_size = ROUND_TO_GROW(countA);
2468 if(!(es->hloc32A = LocalAlloc(LMEM_MOVEABLE | LMEM_ZEROINIT, alloc_size)))
2469 {
2470 ERR("Could not allocate %d bytes for 32-bit ANSI alias buffer\n", alloc_size);
2471 return 0;
2472 }
2473 textA = LocalLock(es->hloc32A);
2474 WideCharToMultiByte(CP_ACP, 0, es->text, -1, textA, countA, NULL, NULL);
2475 LocalUnlock(es->hloc32A);
2476 }
2477 hLocal = es->hloc32A;
2478 }
2479
2480 es->flags |= EF_APP_HAS_HANDLE;
2481 TRACE("Returning %p, LocalSize() = %ld\n", hLocal, LocalSize(hLocal));
2482 return hLocal;
2483 }
2484
2485
2486 /*********************************************************************
2487 *
2488 * EM_GETLINE
2489 *
2490 */
2491 static INT EDIT_EM_GetLine(EDITSTATE *es, INT line, LPWSTR dst, BOOL unicode)
2492 {
2493 LPWSTR src;
2494 INT line_len, dst_len;
2495 INT i;
2496
2497 if (es->style & ES_MULTILINE) {
2498 if (line >= es->line_count)
2499 return 0;
2500 } else
2501 line = 0;
2502 i = EDIT_EM_LineIndex(es, line);
2503 src = es->text + i;
2504 line_len = EDIT_EM_LineLength(es, i);
2505 dst_len = *(WORD *)dst;
2506 if(unicode)
2507 {
2508 if(dst_len <= line_len)
2509 {
2510 memcpy(dst, src, dst_len * sizeof(WCHAR));
2511 return dst_len;
2512 }
2513 else /* Append 0 if enough space */
2514 {
2515 memcpy(dst, src, line_len * sizeof(WCHAR));
2516 dst[line_len] = 0;
2517 return line_len;
2518 }
2519 }
2520 else
2521 {
2522 INT ret = WideCharToMultiByte(CP_ACP, 0, src, line_len, (LPSTR)dst, dst_len, NULL, NULL);
2523 if(!ret && line_len) /* Insufficient buffer size */
2524 return dst_len;
2525 if(ret < dst_len) /* Append 0 if enough space */
2526 ((LPSTR)dst)[ret] = 0;
2527 return ret;
2528 }
2529 }
2530
2531
2532 /*********************************************************************
2533 *
2534 * EM_GETSEL
2535 *
2536 */
2537 static LRESULT EDIT_EM_GetSel(const EDITSTATE *es, PUINT start, PUINT end)
2538 {
2539 UINT s = es->selection_start;
2540 UINT e = es->selection_end;
2541
2542 ORDER_UINT(s, e);
2543 if (start)
2544 *start = s;
2545 if (end)
2546 *end = e;
2547 return MAKELONG(s, e);
2548 }
2549
2550
2551 /*********************************************************************
2552 *
2553 * EM_REPLACESEL
2554 *
2555 * FIXME: handle ES_NUMBER and ES_OEMCONVERT here
2556 *
2557 */
2558 static void EDIT_EM_ReplaceSel(EDITSTATE *es, BOOL can_undo, LPCWSTR lpsz_replace, BOOL send_update, BOOL honor_limit)
2559 {
2560 UINT strl = strlenW(lpsz_replace);
2561 UINT tl = get_text_length(es);
2562 UINT utl;
2563 UINT s;
2564 UINT e;
2565 UINT i;
2566 UINT size;
2567 LPWSTR p;
2568 HRGN hrgn = 0;
2569 LPWSTR buf = NULL;
2570 UINT bufl = 0;
2571
2572 TRACE("%s, can_undo %d, send_update %d\n",
2573 debugstr_w(lpsz_replace), can_undo, send_update);
2574
2575 s = es->selection_start;
2576 e = es->selection_end;
2577
2578 EDIT_InvalidateUniscribeData(es);
2579 if ((s == e) && !strl)
2580 return;
2581
2582 ORDER_UINT(s, e);
2583
2584 size = tl - (e - s) + strl;
2585 if (!size)
2586 es->text_width = 0;
2587
2588 /* Issue the EN_MAXTEXT notification and continue with replacing text
2589 * such that buffer limit is honored. */
2590 if ((honor_limit) && (size > es->buffer_limit)) {
2591 EDIT_NOTIFY_PARENT(es, EN_MAXTEXT);
2592 /* Buffer limit can be smaller than the actual length of text in combobox */
2593 if (es->buffer_limit < (tl - (e-s)))
2594 strl = 0;
2595 else
2596 strl = es->buffer_limit - (tl - (e-s));
2597 }
2598
2599 if (!EDIT_MakeFit(es, tl - (e - s) + strl))
2600 return;
2601
2602 if (e != s) {
2603 /* there is something to be deleted */
2604 TRACE("deleting stuff.\n");
2605 bufl = e - s;
2606 buf = HeapAlloc(GetProcessHeap(), 0, (bufl + 1) * sizeof(WCHAR));
2607 if (!buf) return;
2608 memcpy(buf, es->text + s, bufl * sizeof(WCHAR));
2609 buf[bufl] = 0; /* ensure 0 termination */
2610 /* now delete */
2611 strcpyW(es->text + s, es->text + e);
2612 text_buffer_changed(es);
2613 }
2614 if (strl) {
2615 /* there is an insertion */
2616 tl = get_text_length(es);
2617 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));
2618 for (p = es->text + tl ; p >= es->text + s ; p--)
2619 p[strl] = p[0];
2620 for (i = 0 , p = es->text + s ; i < strl ; i++)
2621 p[i] = lpsz_replace[i];
2622 if(es->style & ES_UPPERCASE)
2623 CharUpperBuffW(p, strl);
2624 else if(es->style & ES_LOWERCASE)
2625 CharLowerBuffW(p, strl);
2626 text_buffer_changed(es);
2627 }
2628 if (es->style & ES_MULTILINE)
2629 {
2630 INT st = min(es->selection_start, es->selection_end);
2631 INT vlc = get_vertical_line_count(es);
2632
2633 hrgn = CreateRectRgn(0, 0, 0, 0);
2634 EDIT_BuildLineDefs_ML(es, st, st + strl,
2635 strl - abs(es->selection_end - es->selection_start), hrgn);
2636 /* if text is too long undo all changes */
2637 if (honor_limit && !(es->style & ES_AUTOVSCROLL) && (es->line_count > vlc)) {
2638 if (strl)
2639 strcpyW(es->text + e, es->text + e + strl);
2640 if (e != s)
2641 for (i = 0 , p = es->text ; i < e - s ; i++)
2642 p[i + s] = buf[i];
2643 text_buffer_changed(es);
2644 EDIT_BuildLineDefs_ML(es, s, e,
2645 abs(es->selection_end - es->selection_start) - strl, hrgn);
2646 strl = 0;
2647 e = s;
2648 hrgn = CreateRectRgn(0, 0, 0, 0);
2649 EDIT_NOTIFY_PARENT(es, EN_MAXTEXT);
2650 }
2651 }
2652 else {
2653 INT fw = es->format_rect.right - es->format_rect.left;
2654 EDIT_InvalidateUniscribeData(es);
2655 EDIT_CalcLineWidth_SL(es);
2656 /* remove chars that don't fit */
2657 if (honor_limit && !(es->style & ES_AUTOHSCROLL) && (es->text_width > fw)) {
2658 while ((es->text_width > fw) && s + strl >= s) {
2659 strcpyW(es->text + s + strl - 1, es->text + s + strl);
2660 strl--;
2661 es->text_length = -1;
2662 EDIT_InvalidateUniscribeData(es);
2663 EDIT_CalcLineWidth_SL(es);
2664 }
2665 text_buffer_changed(es);
2666 EDIT_NOTIFY_PARENT(es, EN_MAXTEXT);
2667 }
2668 }
2669
2670 if (e != s) {
2671 if (can_undo) {
2672 utl = strlenW(es->undo_text);
2673 if (!es->undo_insert_count && (*es->undo_text && (s == es->undo_position))) {
2674 /* undo-buffer is extended to the right */
2675 EDIT_MakeUndoFit(es, utl + e - s);
2676 memcpy(es->undo_text + utl, buf, (e - s)*sizeof(WCHAR));
2677 (es->undo_text + utl)[e - s] = 0; /* ensure 0 termination */
2678 } else if (!es->undo_insert_count && (*es->undo_text && (e == es->undo_position))) {
2679 /* undo-buffer is extended to the left */
2680 EDIT_MakeUndoFit(es, utl + e - s);
2681 for (p = es->undo_text + utl ; p >= es->undo_text ; p--)
2682 p[e - s] = p[0];
2683 for (i = 0 , p = es->undo_text ; i < e - s ; i++)
2684 p[i] = buf[i];
2685 es->undo_position = s;
2686 } else {
2687 /* new undo-buffer */
2688 EDIT_MakeUndoFit(es, e - s);
2689 memcpy(es->undo_text, buf, (e - s)*sizeof(WCHAR));
2690 es->undo_text[e - s] = 0; /* ensure 0 termination */
2691 es->undo_position = s;
2692 }
2693 /* any deletion makes the old insertion-undo invalid */
2694 es->undo_insert_count = 0;
2695 } else
2696 EDIT_EM_EmptyUndoBuffer(es);
2697 }
2698 if (strl) {
2699 if (can_undo) {
2700 if ((s == es->undo_position) ||
2701 ((es->undo_insert_count) &&
2702 (s == es->undo_position + es->undo_insert_count)))
2703 /*
2704 * insertion is new and at delete position or
2705 * an extension to either left or right
2706 */
2707 es->undo_insert_count += strl;
2708 else {
2709 /* new insertion undo */
2710 es->undo_position = s;
2711 es->undo_insert_count = strl;
2712 /* new insertion makes old delete-buffer invalid */
2713 *es->undo_text = '\0';
2714 }
2715 } else
2716 EDIT_EM_EmptyUndoBuffer(es);
2717 }
2718
2719 if (bufl)
2720 HeapFree(GetProcessHeap(), 0, buf);
2721
2722 s += strl;
2723
2724 /* If text has been deleted and we're right or center aligned then scroll rightward */
2725 if (es->style & (ES_RIGHT | ES_CENTER))
2726 {
2727 INT delta = strl - abs(es->selection_end - es->selection_start);
2728
2729 if (delta < 0 && es->x_offset)
2730 {
2731 if (abs(delta) > es->x_offset)
2732 es->x_offset = 0;
2733 else
2734 es->x_offset += delta;
2735 }
2736 }
2737
2738 EDIT_EM_SetSel(es, s, s, FALSE);
2739 es->flags |= EF_MODIFIED;
2740 if (send_update) es->flags |= EF_UPDATE;
2741 if (hrgn)
2742 {
2743 EDIT_UpdateTextRegion(es, hrgn, TRUE);
2744 DeleteObject(hrgn);
2745 }
2746 else
2747 EDIT_UpdateText(es, NULL, TRUE);
2748
2749 EDIT_EM_ScrollCaret(es);
2750
2751 /* force scroll info update */
2752 EDIT_UpdateScrollInfo(es);
2753
2754
2755 if(send_update || (es->flags & EF_UPDATE))
2756 {
2757 es->flags &= ~EF_UPDATE;
2758 EDIT_NOTIFY_PARENT(es, EN_CHANGE);
2759 }
2760 EDIT_InvalidateUniscribeData(es);
2761 }
2762
2763
2764 /*********************************************************************
2765 *
2766 * EM_SETHANDLE
2767 *
2768 * FIXME: ES_LOWERCASE, ES_UPPERCASE, ES_OEMCONVERT, ES_NUMBER ???
2769 *
2770 */
2771 static void EDIT_EM_SetHandle(EDITSTATE *es, HLOCAL hloc)
2772 {
2773 if (!(es->style & ES_MULTILINE))
2774 return;
2775
2776 if (!hloc) {
2777 WARN("called with NULL handle\n");
2778 return;
2779 }
2780
2781 EDIT_UnlockBuffer(es, TRUE);
2782
2783 if(es->is_unicode)
2784 {
2785 if(es->hloc32A)
2786 {
2787 LocalFree(es->hloc32A);
2788 es->hloc32A = NULL;
2789 }
2790 es->hloc32W = hloc;
2791 }
2792 else
2793 {
2794 INT countW, countA;
2795 HLOCAL hloc32W_new;
2796 WCHAR *textW;
2797 CHAR *textA;
2798
2799 countA = LocalSize(hloc);
2800 textA = LocalLock(hloc);
2801 countW = MultiByteToWideChar(CP_ACP, 0, textA, countA, NULL, 0);
2802 if(!(hloc32W_new = LocalAlloc(LMEM_MOVEABLE | LMEM_ZEROINIT, countW * sizeof(WCHAR))))
2803 {
2804 ERR("Could not allocate new unicode buffer\n");
2805 return;
2806 }
2807 textW = LocalLock(hloc32W_new);
2808 MultiByteToWideChar(CP_ACP, 0, textA, countA, textW, countW);
2809 LocalUnlock(hloc32W_new);
2810 LocalUnlock(hloc);
2811
2812 if(es->hloc32W)
2813 LocalFree(es->hloc32W);
2814
2815 es->hloc32W = hloc32W_new;
2816 es->hloc32A = hloc;
2817 }
2818
2819 es->buffer_size = LocalSize(es->hloc32W)/sizeof(WCHAR) - 1;
2820
2821 es->flags |= EF_APP_HAS_HANDLE;
2822 EDIT_LockBuffer(es);
2823
2824 es->x_offset = es->y_offset = 0;
2825 es->selection_start = es->selection_end = 0;
2826 EDIT_EM_EmptyUndoBuffer(es);
2827 es->flags &= ~EF_MODIFIED;
2828 es->flags &= ~EF_UPDATE;
2829 EDIT_BuildLineDefs_ML(es, 0, get_text_length(es), 0, NULL);
2830 EDIT_UpdateText(es, NULL, TRUE);
2831 EDIT_EM_ScrollCaret(es);
2832 /* force scroll info update */
2833 EDIT_UpdateScrollInfo(es);
2834 }
2835
2836
2837 /*********************************************************************
2838 *
2839 * EM_SETLIMITTEXT
2840 *
2841 * NOTE: this version currently implements WinNT limits
2842 *
2843 */
2844 static void EDIT_EM_SetLimitText(EDITSTATE *es, UINT limit)
2845 {
2846 if (!limit) limit = ~0u;
2847 if (!(es->style & ES_MULTILINE)) limit = min(limit, 0x7ffffffe);
2848 es->buffer_limit = limit;
2849 }
2850
2851
2852 /*********************************************************************
2853 *
2854 * EM_SETMARGINS
2855 *
2856 * EC_USEFONTINFO is used as a left or right value i.e. lParam and not as an
2857 * action wParam despite what the docs say. EC_USEFONTINFO calculates the
2858 * margin according to the textmetrics of the current font.
2859 *
2860 * FIXME - With TrueType or vector fonts EC_USEFONTINFO currently sets one third
2861 * of the char's width as the margin, but this is not how Windows handles this.
2862 * For all other fonts Windows sets the margins to zero.
2863 *
2864 * FIXME - When EC_USEFONTINFO is used the margins only change if the
2865 * edit control is equal to or larger than a certain size.
2866 * Interestingly if one subtracts both the left and right margins from
2867 * this size one always seems to get an even number. The extents of
2868 * the (four character) string "'**'" match this quite closely, so
2869 * we'll use this until we come up with a better idea.
2870 */
2871 static int calc_min_set_margin_size(HDC dc, INT left, INT right)
2872 {
2873 WCHAR magic_string[] = {'\'','*','*','\'', 0};
2874 SIZE sz;
2875
2876 GetTextExtentPointW(dc, magic_string, sizeof(magic_string)/sizeof(WCHAR) - 1, &sz);
2877 return sz.cx + left + right;
2878 }
2879
2880 static void EDIT_EM_SetMargins(EDITSTATE *es, INT action,
2881 WORD left, WORD right, BOOL repaint)
2882 {
2883 TEXTMETRICW tm;
2884 INT default_left_margin = 0; /* in pixels */
2885 INT default_right_margin = 0; /* in pixels */
2886
2887 /* Set the default margins depending on the font */
2888 if (es->font && (left == EC_USEFONTINFO || right == EC_USEFONTINFO)) {
2889 HDC dc = GetDC(es->hwndSelf);
2890 HFONT old_font = SelectObject(dc, es->font);
2891 GetTextMetricsW(dc, &tm);
2892 /* The default margins are only non zero for TrueType or Vector fonts */
2893 if (tm.tmPitchAndFamily & ( TMPF_VECTOR | TMPF_TRUETYPE )) {
2894 int min_size;
2895 RECT rc;
2896 /* This must be calculated more exactly! But how? */
2897 default_left_margin = tm.tmAveCharWidth / 2;
2898 default_right_margin = tm.tmAveCharWidth / 2;
2899 min_size = calc_min_set_margin_size(dc, default_left_margin, default_right_margin);
2900 GetClientRect(es->hwndSelf, &rc);
2901 if(rc.right - rc.left < min_size) {
2902 default_left_margin = es->left_margin;
2903 default_right_margin = es->right_margin;
2904 }
2905 }
2906 SelectObject(dc, old_font);
2907 ReleaseDC(es->hwndSelf, dc);
2908 }
2909
2910 if (action & EC_LEFTMARGIN) {
2911 es->format_rect.left -= es->left_margin;
2912 if (left != EC_USEFONTINFO)
2913 es->left_margin = left;
2914 else
2915 es->left_margin = default_left_margin;
2916 es->format_rect.left += es->left_margin;
2917 }
2918
2919 if (action & EC_RIGHTMARGIN) {
2920 es->format_rect.right += es->right_margin;
2921 if (right != EC_USEFONTINFO)
2922 es->right_margin = right;
2923 else
2924 es->right_margin = default_right_margin;
2925 es->format_rect.right -= es->right_margin;
2926 }
2927
2928 if (action & (EC_LEFTMARGIN | EC_RIGHTMARGIN)) {
2929 EDIT_AdjustFormatRect(es);
2930 if (repaint) EDIT_UpdateText(es, NULL, TRUE);
2931 }
2932
2933 TRACE("left=%d, right=%d\n", es->left_margin, es->right_margin);
2934 }
2935
2936
2937 /*********************************************************************
2938 *
2939 * EM_SETPASSWORDCHAR
2940 *
2941 */
2942 static void EDIT_EM_SetPasswordChar(EDITSTATE *es, WCHAR c)
2943 {
2944 LONG style;
2945
2946 if (es->style & ES_MULTILINE)
2947 return;
2948
2949 if (es->password_char == c)
2950 return;
2951
2952 style = GetWindowLongW( es->hwndSelf, GWL_STYLE );
2953 es->password_char = c;
2954 if (c) {
2955 SetWindowLongW( es->hwndSelf, GWL_STYLE, style | ES_PASSWORD );
2956 es->style |= ES_PASSWORD;
2957 } else {
2958 SetWindowLongW( es->hwndSelf, GWL_STYLE, style & ~ES_PASSWORD );
2959 es->style &= ~ES_PASSWORD;
2960 }
2961 EDIT_InvalidateUniscribeData(es);
2962 EDIT_UpdateText(es, NULL, TRUE);
2963 }
2964
2965
2966 /*********************************************************************
2967 *
2968 * EM_SETTABSTOPS
2969 *
2970 */
2971 static BOOL EDIT_EM_SetTabStops(EDITSTATE *es, INT count, const INT *tabs)
2972 {
2973 if (!(es->style & ES_MULTILINE))
2974 return FALSE;
2975 HeapFree(GetProcessHeap(), 0, es->tabs);
2976 es->tabs_count = count;
2977 if (!count)
2978 es->tabs = NULL;
2979 else {
2980 es->tabs = HeapAlloc(GetProcessHeap(), 0, count * sizeof(INT));
2981 memcpy(es->tabs, tabs, count * sizeof(INT));
2982 }
2983 EDIT_InvalidateUniscribeData(es);
2984 return TRUE;
2985 }
2986
2987
2988 /*********************************************************************
2989 *
2990 * EM_SETWORDBREAKPROC
2991 *
2992 */
2993 static void EDIT_EM_SetWordBreakProc(EDITSTATE *es, void *wbp)
2994 {
2995 if (es->word_break_proc == wbp)
2996 return;
2997
2998 es->word_break_proc = wbp;
2999
3000 if ((es->style & ES_MULTILINE) && !(es->style & ES_AUTOHSCROLL)) {
3001 EDIT_BuildLineDefs_ML(es, 0, get_text_length(es), 0, NULL);
3002 EDIT_UpdateText(es, NULL, TRUE);
3003 }
3004 }
3005
3006
3007 /*********************************************************************
3008 *
3009 * EM_UNDO / WM_UNDO
3010 *
3011 */
3012 static BOOL EDIT_EM_Undo(EDITSTATE *es)
3013 {
3014 INT ulength;
3015 LPWSTR utext;
3016
3017 /* As per MSDN spec, for a single-line edit control,
3018 the return value is always TRUE */
3019 if( es->style & ES_READONLY )
3020 return !(es->style & ES_MULTILINE);
3021
3022 ulength = strlenW(es->undo_text);
3023
3024 utext = HeapAlloc(GetProcessHeap(), 0, (ulength + 1) * sizeof(WCHAR));
3025
3026 strcpyW(utext, es->undo_text);
3027
3028 TRACE("before UNDO:insertion length = %d, deletion buffer = %s\n",
3029 es->undo_insert_count, debugstr_w(utext));
3030
3031 EDIT_EM_SetSel(es, es->undo_position, es->undo_position + es->undo_insert_count, FALSE);
3032 EDIT_EM_EmptyUndoBuffer(es);
3033 EDIT_EM_ReplaceSel(es, TRUE, utext, TRUE, TRUE);
3034 EDIT_EM_SetSel(es, es->undo_position, es->undo_position + es->undo_insert_count, FALSE);
3035 /* send the notification after the selection start and end are set */
3036 EDIT_NOTIFY_PARENT(es, EN_CHANGE);
3037 EDIT_EM_ScrollCaret(es);
3038 HeapFree(GetProcessHeap(), 0, utext);
3039
3040 TRACE("after UNDO:insertion length = %d, deletion buffer = %s\n",
3041 es->undo_insert_count, debugstr_w(es->undo_text));
3042 return TRUE;
3043 }
3044
3045
3046 /* Helper function for WM_CHAR
3047 *
3048 * According to an MSDN blog article titled "Just because you're a control
3049 * doesn't mean that you're necessarily inside a dialog box," multiline edit
3050 * controls without ES_WANTRETURN would attempt to detect whether it is inside
3051 * a dialog box or not.
3052 */
3053 static inline BOOL EDIT_IsInsideDialog(EDITSTATE *es)
3054 {
3055 return (es->flags & EF_DIALOGMODE);
3056 }
3057
3058
3059 /*********************************************************************
3060 *
3061 * WM_PASTE
3062 *
3063 */
3064 static void EDIT_WM_Paste(EDITSTATE *es)
3065 {
3066 HGLOBAL hsrc;
3067 LPWSTR src;
3068
3069 /* Protect read-only edit control from modification */
3070 if(es->style & ES_READONLY)
3071 return;
3072
3073 OpenClipboard(es->hwndSelf);
3074 if ((hsrc = GetClipboardData(CF_UNICODETEXT))) {
3075 src = GlobalLock(hsrc);
3076 EDIT_EM_ReplaceSel(es, TRUE, src, TRUE, TRUE);
3077 GlobalUnlock(hsrc);
3078 }
3079 else if (es->style & ES_PASSWORD) {
3080 /* clear selected text in password edit box even with empty clipboard */
3081 EDIT_EM_ReplaceSel(es, TRUE, empty_stringW, TRUE, TRUE);
3082 }
3083 CloseClipboard();
3084 }
3085
3086
3087 /*********************************************************************
3088 *
3089 * WM_COPY
3090 *
3091 */
3092 static void EDIT_WM_Copy(EDITSTATE *es)
3093 {
3094 INT s = min(es->selection_start, es->selection_end);
3095 INT e = max(es->selection_start, es->selection_end);
3096 HGLOBAL hdst;
3097 LPWSTR dst;
3098 DWORD len;
3099
3100 if (e == s) return;
3101
3102 len = e - s;
3103 hdst = GlobalAlloc(GMEM_MOVEABLE | GMEM_DDESHARE, (len + 1) * sizeof(WCHAR));
3104 dst = GlobalLock(hdst);
3105 memcpy(dst, es->text + s, len * sizeof(WCHAR));
3106 dst[len] = 0; /* ensure 0 termination */
3107 TRACE("%s\n", debugstr_w(dst));
3108 GlobalUnlock(hdst);
3109 OpenClipboard(es->hwndSelf);
3110 EmptyClipboard();
3111 SetClipboardData(CF_UNICODETEXT, hdst);
3112 CloseClipboard();
3113 }
3114
3115
3116 /*********************************************************************
3117 *
3118 * WM_CLEAR
3119 *
3120 */
3121 static inline void EDIT_WM_Clear(EDITSTATE *es)
3122 {
3123 /* Protect read-only edit control from modification */
3124 if(es->style & ES_READONLY)
3125 return;
3126
3127 EDIT_EM_ReplaceSel(es, TRUE, empty_stringW, TRUE, TRUE);
3128 }
3129
3130
3131 /*********************************************************************
3132 *
3133 * WM_CUT
3134 *
3135 */
3136 static inline void EDIT_WM_Cut(EDITSTATE *es)
3137 {
3138 EDIT_WM_Copy(es);
3139 EDIT_WM_Clear(es);
3140 }
3141
3142
3143 /*********************************************************************
3144 *
3145 * WM_CHAR
3146 *
3147 */
3148 static LRESULT EDIT_WM_Char(EDITSTATE *es, WCHAR c)
3149 {
3150 BOOL control;
3151
3152 control = GetKeyState(VK_CONTROL) & 0x8000;
3153
3154 switch (c) {
3155 case '\r':
3156 /* If it's not a multiline edit box, it would be ignored below.
3157 * For multiline edit without ES_WANTRETURN, we have to make a
3158 * special case.
3159 */
3160 if ((es->style & ES_MULTILINE) && !(es->style & ES_WANTRETURN))
3161 if (EDIT_IsInsideDialog(es))
3162 break;
3163 case '\n':
3164 if (es->style & ES_MULTILINE) {
3165 if (es->style & ES_READONLY) {
3166 EDIT_MoveHome(es, FALSE, FALSE);
3167 EDIT_MoveDown_ML(es, FALSE);
3168 } else {
3169 static const WCHAR cr_lfW[] = {'\r','\n',0};
3170 EDIT_EM_ReplaceSel(es, TRUE, cr_lfW, TRUE, TRUE);
3171 }
3172 }
3173 break;
3174 case '\t':
3175 if ((es->style & ES_MULTILINE) && !(es->style & ES_READONLY))
3176 {
3177 static const WCHAR tabW[] = {'\t',0};
3178 if (EDIT_IsInsideDialog(es))
3179 break;
3180 EDIT_EM_ReplaceSel(es, TRUE, tabW, TRUE, TRUE);
3181 }
3182 break;
3183 case VK_BACK:
3184 if (!(es->style & ES_READONLY) && !control) {
3185 if (es->selection_start != es->selection_end)
3186 EDIT_WM_Clear(es);
3187 else {
3188 /* delete character left of caret */
3189 EDIT_EM_SetSel(es, (UINT)-1, 0, FALSE);
3190 EDIT_MoveBackward(es, TRUE);
3191 EDIT_WM_Clear(es);
3192 }
3193 }
3194 break;
3195 case 0x03: /* ^C */
3196 if (!(es->style & ES_PASSWORD))
3197 SendMessageW(es->hwndSelf, WM_COPY, 0, 0);
3198 break;
3199 case 0x16: /* ^V */
3200 if (!(es->style & ES_READONLY))
3201 SendMessageW(es->hwndSelf, WM_PASTE, 0, 0);
3202 break;
3203 case 0x18: /* ^X */
3204 if (!((es->style & ES_READONLY) || (es->style & ES_PASSWORD)))
3205 SendMessageW(es->hwndSelf, WM_CUT, 0, 0);
3206 break;
3207 case 0x1A: /* ^Z */
3208 if (!(es->style & ES_READONLY))
3209 SendMessageW(es->hwndSelf, WM_UNDO, 0, 0);
3210 break;
3211
3212 default:
3213 /*If Edit control style is ES_NUMBER allow users to key in only numeric values*/
3214 if( (es->style & ES_NUMBER) && !( c >= '0' && c <= '9') )
3215 break;
3216
3217 if (!(es->style & ES_READONLY) && (c >= ' ') && (c != 127)) {
3218 WCHAR str[2];
3219 str[0] = c;
3220 str[1] = '\0';
3221 EDIT_EM_ReplaceSel(es, TRUE, str, TRUE, TRUE);
3222 }
3223 break;
3224 }
3225 return 1;
3226 }
3227
3228
3229 /*********************************************************************
3230 *
3231 * WM_COMMAND
3232 *
3233 */
3234 static void EDIT_WM_Command(EDITSTATE *es, INT code, INT id, HWND control)
3235 {
3236 if (code || control)
3237 return;
3238
3239 switch (id) {
3240 case EM_UNDO:
3241 SendMessageW(es->hwndSelf, WM_UNDO, 0, 0);
3242 break;
3243 case WM_CUT:
3244 SendMessageW(es->hwndSelf, WM_CUT, 0, 0);
3245 break;
3246 case WM_COPY:
3247 SendMessageW(es->hwndSelf, WM_COPY, 0, 0);
3248 break;
3249 case WM_PASTE:
3250 SendMessageW(es->hwndSelf, WM_PASTE, 0, 0);
3251 break;
3252 case WM_CLEAR:
3253 SendMessageW(es->hwndSelf, WM_CLEAR, 0, 0);
3254 break;
3255 case EM_SETSEL:
3256 EDIT_EM_SetSel(es, 0, (UINT)-1, FALSE);
3257 EDIT_EM_ScrollCaret(es);
3258 break;
3259 default:
3260 ERR("unknown menu item, please report\n");
3261 break;
3262 }
3263 }
3264
3265
3266 /*********************************************************************
3267 *
3268 * WM_CONTEXTMENU
3269 *
3270 * Note: the resource files resource/sysres_??.rc cannot define a
3271 * single popup menu. Hence we use a (dummy) menubar
3272 * containing the single popup menu as its first item.
3273 *
3274 * FIXME: the message identifiers have been chosen arbitrarily,
3275 * hence we use MF_BYPOSITION.
3276 * We might as well use the "real" values (anybody knows ?)
3277 * The menu definition is in resources/sysres_??.rc.
3278 * Once these are OK, we better use MF_BYCOMMAND here
3279 * (as we do in EDIT_WM_Command()).
3280 *
3281 */
3282 static void EDIT_WM_ContextMenu(EDITSTATE *es, INT x, INT y)
3283 {
3284 HMENU menu = LoadMenuA(user32_module, "EDITMENU");
3285 HMENU popup = GetSubMenu(menu, 0);
3286 UINT start = es->selection_start;
3287 UINT end = es->selection_end;
3288
3289 ORDER_UINT(start, end);
3290
3291 /* undo */
3292 EnableMenuItem(popup, 0, MF_BYPOSITION | (EDIT_EM_CanUndo(es) && !(es->style & ES_READONLY) ? MF_ENABLED : MF_GRAYED));
3293 /* cut */
3294 EnableMenuItem(popup, 2, MF_BYPOSITION | ((end - start) && !(es->style & ES_PASSWORD) && !(es->style & ES_READONLY) ? MF_ENABLED : MF_GRAYED));
3295 /* copy */
3296 EnableMenuItem(popup, 3, MF_BYPOSITION | ((end - start) && !(es->style & ES_PASSWORD) ? MF_ENABLED : MF_GRAYED));
3297 /* paste */
3298 EnableMenuItem(popup, 4, MF_BYPOSITION | (IsClipboardFormatAvailable(CF_UNICODETEXT) && !(es->style & ES_READONLY) ? MF_ENABLED : MF_GRAYED));
3299 /* delete */
3300 EnableMenuItem(popup, 5, MF_BYPOSITION | ((end - start) && !(es->style & ES_READONLY) ? MF_ENABLED : MF_GRAYED));
3301 /* select all */
3302 EnableMenuItem(popup, 7, MF_BYPOSITION | (start || (end != get_text_length(es)) ? MF_ENABLED : MF_GRAYED));
3303
3304 if (x == -1 && y == -1) /* passed via VK_APPS press/release */
3305 {
3306 RECT rc;
3307 /* Windows places the menu at the edit's center in this case */
3308 WIN_GetRectangles( es->hwndSelf, COORDS_SCREEN, NULL, &rc );
3309 x = rc.left + (rc.right - rc.left) / 2;
3310 y = rc.top + (rc.bottom - rc.top) / 2;
3311 }
3312
3313 if (!(es->flags & EF_FOCUSED))
3314 SetFocus(es->hwndSelf);
3315
3316 TrackPopupMenu(popup, TPM_LEFTALIGN | TPM_RIGHTBUTTON, x, y, 0, es->hwndSelf, NULL);
3317 DestroyMenu(menu);
3318 }
3319
3320
3321 /*********************************************************************
3322 *
3323 * WM_GETTEXT
3324 *
3325 */
3326 static INT EDIT_WM_GetText(const EDITSTATE *es, INT count, LPWSTR dst, BOOL unicode)
3327 {
3328 if(!count) return 0;
3329
3330 if(unicode)
3331 {
3332 lstrcpynW(dst, es->text, count);
3333 return strlenW(dst);
3334 }
3335 else
3336 {
3337 LPSTR textA = (LPSTR)dst;
3338 if (!WideCharToMultiByte(CP_ACP, 0, es->text, -1, textA, count, NULL, NULL))
3339 textA[count - 1] = 0; /* ensure 0 termination */
3340 return strlen(textA);
3341 }
3342 }
3343
3344 /*********************************************************************
3345 *
3346 * EDIT_CheckCombo
3347 *
3348 */
3349 static BOOL EDIT_CheckCombo(EDITSTATE *es, UINT msg, INT key)
3350 {
3351 HWND hLBox = es->hwndListBox;
3352 HWND hCombo;
3353 BOOL bDropped;
3354 int nEUI;
3355
3356 if (!hLBox)
3357 return FALSE;
3358
3359 hCombo = GetParent(es->hwndSelf);
3360 bDropped = TRUE;
3361 nEUI = 0;
3362
3363 TRACE_(combo)("[%p]: handling msg %x (%x)\n", es->hwndSelf, msg, key);
3364
3365 if (key == VK_UP || key == VK_DOWN)
3366 {
3367 if (SendMessageW(hCombo, CB_GETEXTENDEDUI, 0, 0))
3368 nEUI = 1;
3369
3370 if (msg == WM_KEYDOWN || nEUI)
3371 bDropped = (BOOL)SendMessageW(hCombo, CB_GETDROPPEDSTATE, 0, 0);
3372 }
3373
3374 switch (msg)
3375 {
3376 case WM_KEYDOWN:
3377 if (!bDropped && nEUI && (key == VK_UP || key == VK_DOWN))
3378 {
3379 /* make sure ComboLBox pops up */
3380 SendMessageW(hCombo, CB_SETEXTENDEDUI, FALSE, 0);
3381 key = VK_F4;
3382 nEUI = 2;
3383 }
3384
3385 SendMessageW(hLBox, WM_KEYDOWN, key, 0);
3386 break;
3387
3388 case WM_SYSKEYDOWN: /* Handle Alt+up/down arrows */
3389 if (nEUI)
3390 SendMessageW(hCombo, CB_SHOWDROPDOWN, !bDropped, 0);
3391 else
3392 SendMessageW(hLBox, WM_KEYDOWN, VK_F4, 0);
3393 break;
3394 }
3395
3396 if(nEUI == 2)
3397 SendMessageW(hCombo, CB_SETEXTENDEDUI, TRUE, 0);
3398
3399 return TRUE;
3400 }
3401
3402
3403 /*********************************************************************
3404 *
3405 * WM_KEYDOWN
3406 *
3407 * Handling of special keys that don't produce a WM_CHAR
3408 * (i.e. non-printable keys) & Backspace & Delete
3409 *
3410 */
3411 static LRESULT EDIT_WM_KeyDown(EDITSTATE *es, INT key)
3412 {
3413 BOOL shift;
3414 BOOL control;
3415
3416 if (GetKeyState(VK_MENU) & 0x8000)
3417 return 0;
3418
3419 shift = GetKeyState(VK_SHIFT) & 0x8000;
3420 control = GetKeyState(VK_CONTROL) & 0x8000;
3421
3422 switch (key) {
3423 case VK_F4:
3424 case VK_UP:
3425 if (EDIT_CheckCombo(es, WM_KEYDOWN, key) || key == VK_F4)
3426 break;
3427
3428 /* fall through */
3429 case VK_LEFT:
3430 if ((es->style & ES_MULTILINE) && (key == VK_UP))
3431 EDIT_MoveUp_ML(es, shift);
3432 else
3433 if (control)
3434 EDIT_MoveWordBackward(es, shift);
3435 else
3436 EDIT_MoveBackward(es, shift);
3437 break;
3438 case VK_DOWN:
3439 if (EDIT_CheckCombo(es, WM_KEYDOWN, key))
3440 break;
3441 /* fall through */
3442 case VK_RIGHT:
3443 if ((es->style & ES_MULTILINE) && (key == VK_DOWN))
3444 EDIT_MoveDown_ML(es, shift);
3445 else if (control)
3446 EDIT_MoveWordForward(es, shift);
3447 else
3448 EDIT_MoveForward(es, shift);
3449 break;
3450 case VK_HOME:
3451 EDIT_MoveHome(es, shift, control);
3452 break;
3453 case VK_END:
3454 EDIT_MoveEnd(es, shift, control);
3455 break;
3456 case VK_PRIOR:
3457 if (es->style & ES_MULTILINE)
3458 EDIT_MovePageUp_ML(es, shift);
3459 else
3460 EDIT_CheckCombo(es, WM_KEYDOWN, key);
3461 break;
3462 case VK_NEXT:
3463 if (es->style & ES_MULTILINE)
3464 EDIT_MovePageDown_ML(es, shift);
3465 else
3466 EDIT_CheckCombo(es, WM_KEYDOWN, key);
3467 break;
3468 case VK_DELETE:
3469 if (!(es->style & ES_READONLY) && !(shift && control)) {
3470 if (es->selection_start != es->selection_end) {
3471 if (shift)
3472 EDIT_WM_Cut(es);
3473 else
3474 EDIT_WM_Clear(es);
3475 } else {
3476 if (shift) {
3477 /* delete character left of caret */
3478 EDIT_EM_SetSel(es, (UINT)-1, 0, FALSE);
3479 EDIT_MoveBackward(es, TRUE);
3480 EDIT_WM_Clear(es);
3481 } else if (control) {
3482 /* delete to end of line */
3483 EDIT_EM_SetSel(es, (UINT)-1, 0, FALSE);
3484 EDIT_MoveEnd(es, TRUE, FALSE);
3485 EDIT_WM_Clear(es);
3486 } else {
3487 /* delete character right of caret */
3488 EDIT_EM_SetSel(es, (UINT)-1, 0, FALSE);
3489 EDIT_MoveForward(es, TRUE);
3490 EDIT_WM_Clear(es);
3491 }
3492 }
3493 }
3494 break;
3495 case VK_INSERT:
3496 if (shift) {
3497 if (!(es->style & ES_READONLY))
3498 EDIT_WM_Paste(es);
3499 } else if (control)
3500 EDIT_WM_Copy(es);
3501 break;
3502 case VK_RETURN:
3503 /* If the edit doesn't want the return send a message to the default object */
3504 if(!(es->style & ES_MULTILINE) || !(es->style & ES_WANTRETURN))
3505 {
3506 DWORD dw;
3507
3508 if (!EDIT_IsInsideDialog(es)) break;
3509 if (control) break;
3510 dw = SendMessageW(es->hwndParent, DM_GETDEFID, 0, 0);
3511 if (HIWORD(dw) == DC_HASDEFID)
3512 {
3513 HWND hwDefCtrl = GetDlgItem(es->hwndParent, LOWORD(dw));
3514 if (hwDefCtrl)
3515 {
3516 SendMessageW(es->hwndParent, WM_NEXTDLGCTL, (WPARAM)hwDefCtrl, TRUE);
3517 PostMessageW(hwDefCtrl, WM_KEYDOWN, VK_RETURN, 0);
3518 }
3519 }
3520 }
3521 break;
3522 case VK_ESCAPE:
3523 if ((es->style & ES_MULTILINE) && EDIT_IsInsideDialog(es))
3524 PostMessageW(es->hwndParent, WM_CLOSE, 0, 0);
3525 break;
3526 case VK_TAB:
3527 if ((es->style & ES_MULTILINE) && EDIT_IsInsideDialog(es))
3528 SendMessageW(es->hwndParent, WM_NEXTDLGCTL, shift, 0);
3529 break;
3530 }
3531 return TRUE;
3532 }
3533
3534
3535 /*********************************************************************
3536 *
3537 * WM_KILLFOCUS
3538 *
3539 */
3540 static LRESULT EDIT_WM_KillFocus(EDITSTATE *es)
3541 {
3542 es->flags &= ~EF_FOCUSED;
3543 DestroyCaret();
3544 if(!(es->style & ES_NOHIDESEL))
3545 EDIT_InvalidateText(es, es->selection_start, es->selection_end);
3546 EDIT_NOTIFY_PARENT(es, EN_KILLFOCUS);
3547 return 0;
3548 }
3549
3550
3551 /*********************************************************************
3552 *
3553 * WM_LBUTTONDBLCLK
3554 *
3555 * The caret position has been set on the WM_LBUTTONDOWN message
3556 *
3557 */
3558 static LRESULT EDIT_WM_LButtonDblClk(EDITSTATE *es)
3559 {
3560 INT s;
3561 INT e = es->selection_end;
3562 INT l;
3563 INT li;
3564 INT ll;
3565
3566 es->bCaptureState = TRUE;
3567 SetCapture(es->hwndSelf);
3568
3569 l = EDIT_EM_LineFromChar(es, e);
3570 li = EDIT_EM_LineIndex(es, l);
3571 ll = EDIT_EM_LineLength(es, e);
3572 s = li + EDIT_CallWordBreakProc(es, li, e - li, ll, WB_LEFT);
3573 e = li + EDIT_CallWordBreakProc(es, li, e - li, ll, WB_RIGHT);
3574 EDIT_EM_SetSel(es, s, e, FALSE);
3575 EDIT_EM_ScrollCaret(es);
3576 es->region_posx = es->region_posy = 0;
3577 SetTimer(es->hwndSelf, 0, 100, NULL);
3578 return 0;
3579 }
3580
3581
3582 /*********************************************************************
3583 *
3584 * WM_LBUTTONDOWN
3585 *
3586 */
3587 static LRESULT EDIT_WM_LButtonDown(EDITSTATE *es, DWORD keys, INT x, INT y)
3588 {
3589 INT e;
3590 BOOL after_wrap;
3591
3592 es->bCaptureState = TRUE;
3593 SetCapture(es->hwndSelf);
3594 EDIT_ConfinePoint(es, &x, &y);
3595 e = EDIT_CharFromPos(es, x, y, &after_wrap);
3596 EDIT_EM_SetSel(es, (keys & MK_SHIFT) ? es->selection_start : e, e, after_wrap);
3597 EDIT_EM_ScrollCaret(es);
3598 es->region_posx = es->region_posy = 0;
3599 SetTimer(es->hwndSelf, 0, 100, NULL);
3600
3601 if (!(es->flags & EF_FOCUSED))
3602 SetFocus(es->hwndSelf);
3603
3604 return 0;
3605 }
3606
3607
3608 /*********************************************************************
3609 *
3610 * WM_LBUTTONUP
3611 *
3612 */
3613 static LRESULT EDIT_WM_LButtonUp(EDITSTATE *es)
3614 {
3615 if (es->bCaptureState) {
3616 KillTimer(es->hwndSelf, 0);
3617 if (GetCapture() == es->hwndSelf) ReleaseCapture();
3618 }
3619 es->bCaptureState = FALSE;
3620 return 0;
3621 }
3622
3623
3624 /*********************************************************************
3625 *
3626 * WM_MBUTTONDOWN
3627 *
3628 */
3629 static LRESULT EDIT_WM_MButtonDown(EDITSTATE *es)
3630 {
3631 SendMessageW(es->hwndSelf, WM_PASTE, 0, 0);
3632 return 0;
3633 }
3634
3635
3636 /*********************************************************************
3637 *
3638 * WM_MOUSEMOVE
3639 *
3640 */
3641 static LRESULT EDIT_WM_MouseMove(EDITSTATE *es, INT x, INT y)
3642 {
3643 INT e;
3644 BOOL after_wrap;
3645 INT prex, prey;
3646
3647 /* If the mouse has been captured by process other than the edit control itself,
3648 * the windows edit controls will not select the strings with mouse move.
3649 */
3650 if (!es->bCaptureState || GetCapture() != es->hwndSelf)
3651 return 0;
3652
3653 /*
3654 * FIXME: gotta do some scrolling if outside client
3655 * area. Maybe reset the timer ?
3656 */
3657 prex = x; prey = y;
3658 EDIT_ConfinePoint(es, &x, &y);
3659 es->region_posx = (prex < x) ? -1 : ((prex > x) ? 1 : 0);
3660 es->region_posy = (prey < y) ? -1 : ((prey > y) ? 1 : 0);
3661 e = EDIT_CharFromPos(es, x, y, &after_wrap);
3662 EDIT_EM_SetSel(es, es->selection_start, e, after_wrap);
3663 EDIT_SetCaretPos(es,es->selection_end,es->flags & EF_AFTER_WRAP);
3664 return 0;
3665 }
3666
3667
3668 /*********************************************************************
3669 *
3670 * WM_PAINT
3671 *
3672 */
3673 static void EDIT_WM_Paint(EDITSTATE *es, HDC hdc)
3674 {
3675 PAINTSTRUCT ps;
3676 INT i;
3677 HDC dc;
3678 HFONT old_font = 0;
3679 RECT rc;
3680 RECT rcClient;
3681 RECT rcLine;
3682 RECT rcRgn;
3683 HBRUSH brush;
3684 HBRUSH old_brush;
3685 INT bw, bh;
3686 BOOL rev = es->bEnableState &&
3687 ((es->flags & EF_FOCUSED) ||
3688 (es->style & ES_NOHIDESEL));
3689 dc = hdc ? hdc : BeginPaint(es->hwndSelf, &ps);
3690
3691 /* The dc we use for calculating may not be the one we paint into.
3692 This is the safest action. */
3693 EDIT_InvalidateUniscribeData(es);
3694 GetClientRect(es->hwndSelf, &rcClient);
3695
3696 /* get the background brush */
3697 brush = EDIT_NotifyCtlColor(es, dc);
3698
3699 /* paint the border and the background */
3700 IntersectClipRect(dc, rcClient.left, rcClient.top, rcClient.right, rcClient.bottom);
3701
3702 if(es->style & WS_BORDER) {
3703 bw = GetSystemMetrics(SM_CXBORDER);
3704 bh = GetSystemMetrics(SM_CYBORDER);
3705 rc = rcClient;
3706 if(es->style & ES_MULTILINE) {
3707 if(es->style & WS_HSCROLL) rc.bottom+=bh;
3708 if(es->style & WS_VSCROLL) rc.right+=bw;
3709 }
3710
3711 /* Draw the frame. Same code as in nonclient.c */
3712 old_brush = SelectObject(dc, GetSysColorBrush(COLOR_WINDOWFRAME));
3713 PatBlt(dc, rc.left, rc.top, rc.right - rc.left, bh, PATCOPY);
3714 PatBlt(dc, rc.left, rc.top, bw, rc.bottom - rc.top, PATCOPY);
3715 PatBlt(dc, rc.left, rc.bottom - 1, rc.right - rc.left, -bw, PATCOPY);
3716 PatBlt(dc, rc.right - 1, rc.top, -bw, rc.bottom - rc.top, PATCOPY);
3717 SelectObject(dc, old_brush);
3718
3719 /* Keep the border clean */
3720 IntersectClipRect(dc, rc.left+bw, rc.top+bh,
3721 max(rc.right-bw, rc.left+bw), max(rc.bottom-bh, rc.top+bh));
3722 }
3723
3724 GetClipBox(dc, &rc);
3725 FillRect(dc, &rc, brush);
3726
3727 IntersectClipRect(dc, es->format_rect.left,
3728 es->format_rect.top,
3729 es->format_rect.right,
3730 es->format_rect.bottom);
3731 if (es->style & ES_MULTILINE) {
3732 rc = rcClient;
3733 IntersectClipRect(dc, rc.left, rc.top, rc.right, rc.bottom);
3734 }
3735 if (es->font)
3736 old_font = SelectObject(dc, es->font);
3737
3738 if (!es->bEnableState)
3739 SetTextColor(dc, GetSysColor(COLOR_GRAYTEXT));
3740 GetClipBox(dc, &rcRgn);
3741 if (es->style & ES_MULTILINE) {
3742 INT vlc = get_vertical_line_count(es);
3743 for (i = es->y_offset ; i <= min(es->y_offset + vlc, es->y_offset + es->line_count - 1) ; i++) {
3744 EDIT_UpdateUniscribeData(es, dc, i);
3745 EDIT_GetLineRect(es, i, 0, -1, &rcLine);
3746 if (IntersectRect(&rc, &rcRgn, &rcLine))
3747 EDIT_PaintLine(es, dc, i, rev);
3748 }
3749 } else {
3750 EDIT_UpdateUniscribeData(es, dc, 0);
3751 EDIT_GetLineRect(es, 0, 0, -1, &rcLine);
3752 if (IntersectRect(&rc, &rcRgn, &rcLine))
3753 EDIT_PaintLine(es, dc, 0, rev);
3754 }
3755 if (es->font)
3756 SelectObject(dc, old_font);
3757
3758 if (!hdc)
3759 EndPaint(es->hwndSelf, &ps);
3760 }
3761
3762
3763 /*********************************************************************
3764 *
3765 * WM_SETFOCUS
3766 *
3767 */
3768 static void EDIT_WM_SetFocus(EDITSTATE *es)
3769 {
3770 es->flags |= EF_FOCUSED;
3771
3772 if (!(es->style & ES_NOHIDESEL))
3773 EDIT_InvalidateText(es, es->selection_start, es->selection_end);
3774
3775 /* single line edit updates itself */
3776 if (!(es->style & ES_MULTILINE))
3777 {
3778 HDC hdc = GetDC(es->hwndSelf);
3779 EDIT_WM_Paint(es, hdc);
3780 ReleaseDC(es->hwndSelf, hdc);
3781 }
3782
3783 CreateCaret(es->hwndSelf, 0, 1, es->line_height);
3784 EDIT_SetCaretPos(es, es->selection_end,
3785 es->flags & EF_AFTER_WRAP);
3786 ShowCaret(es->hwndSelf);
3787 EDIT_NOTIFY_PARENT(es, EN_SETFOCUS);
3788 }
3789
3790
3791 /*********************************************************************
3792 *
3793 * WM_SETFONT
3794 *
3795 * With Win95 look the margins are set to default font value unless
3796 * the system font (font == 0) is being set, in which case they are left
3797 * unchanged.
3798 *
3799 */
3800 static void EDIT_WM_SetFont(EDITSTATE *es, HFONT font, BOOL redraw)
3801 {
3802 TEXTMETRICW tm;
3803 HDC dc;
3804 HFONT old_font = 0;
3805 RECT clientRect;
3806
3807 es->font = font;
3808 EDIT_InvalidateUniscribeData(es);
3809 dc = GetDC(es->hwndSelf);
3810 if (font)
3811 old_font = SelectObject(dc, font);
3812 GetTextMetricsW(dc, &tm);
3813 es->line_height = tm.tmHeight;
3814 es->char_width = tm.tmAveCharWidth;
3815 if (font)
3816 SelectObject(dc, old_font);
3817 ReleaseDC(es->hwndSelf, dc);
3818
3819 /* Reset the format rect and the margins */
3820 GetClientRect(es->hwndSelf, &clientRect);
3821 EDIT_SetRectNP(es, &clientRect);
3822 EDIT_EM_SetMargins(es, EC_LEFTMARGIN | EC_RIGHTMARGIN,
3823 EC_USEFONTINFO, EC_USEFONTINFO, FALSE);
3824
3825 if (es->style & ES_MULTILINE)
3826 EDIT_BuildLineDefs_ML(es, 0, get_text_length(es), 0, NULL);
3827 else
3828 EDIT_CalcLineWidth_SL(es);
3829
3830 if (redraw)
3831 EDIT_UpdateText(es, NULL, TRUE);
3832 if (es->flags & EF_FOCUSED) {
3833 DestroyCaret();
3834 CreateCaret(es->hwndSelf, 0, 1, es->line_height);
3835 EDIT_SetCaretPos(es, es->selection_end,
3836 es->flags & EF_AFTER_WRAP);
3837 ShowCaret(es->hwndSelf);
3838 }
3839 }
3840
3841
3842 /*********************************************************************
3843 *
3844 * WM_SETTEXT
3845 *
3846 * NOTES
3847 * For multiline controls (ES_MULTILINE), reception of WM_SETTEXT triggers:
3848 * The modified flag is reset. No notifications are sent.
3849 *
3850 * For single-line controls, reception of WM_SETTEXT triggers:
3851 * The modified flag is reset. EN_UPDATE and EN_CHANGE notifications are sent.
3852 *
3853 */
3854 static void EDIT_WM_SetText(EDITSTATE *es, LPCWSTR text, BOOL unicode)
3855 {
3856 LPWSTR textW = NULL;
3857 if (!unicode && text)
3858 {
3859 LPCSTR textA = (LPCSTR)text;
3860 INT countW = MultiByteToWideChar(CP_ACP, 0, textA, -1, NULL, 0);
3861 textW = HeapAlloc(GetProcessHeap(), 0, countW * sizeof(WCHAR));
3862 if (textW)
3863 MultiByteToWideChar(CP_ACP, 0, textA, -1, textW, countW);
3864 text = textW;
3865 }
3866
3867 if (es->flags & EF_UPDATE)
3868 /* fixed this bug once; complain if we see it about to happen again. */
3869 ERR("SetSel may generate UPDATE message whose handler may reset "
3870 "selection.\n");
3871
3872 EDIT_EM_SetSel(es, 0, (UINT)-1, FALSE);
3873 if (text)
3874 {
3875 TRACE("%s\n", debugstr_w(text));
3876 EDIT_EM_ReplaceSel(es, FALSE, text, FALSE, FALSE);
3877 if(!unicode)
3878 HeapFree(GetProcessHeap(), 0, textW);
3879 }
3880 else
3881 {
3882 TRACE("<NULL>\n");
3883 EDIT_EM_ReplaceSel(es, FALSE, empty_stringW, FALSE, FALSE);
3884 }
3885 es->x_offset = 0;
3886 es->flags &= ~EF_MODIFIED;
3887 EDIT_EM_SetSel(es, 0, 0, FALSE);
3888
3889 /* Send the notification after the selection start and end have been set
3890 * edit control doesn't send notification on WM_SETTEXT
3891 * if it is multiline, or it is part of combobox
3892 */
3893 if( !((es->style & ES_MULTILINE) || es->hwndListBox))
3894 {
3895 EDIT_NOTIFY_PARENT(es, EN_UPDATE);
3896 EDIT_NOTIFY_PARENT(es, EN_CHANGE);
3897 }
3898 EDIT_EM_ScrollCaret(es);
3899 EDIT_UpdateScrollInfo(es);
3900 EDIT_InvalidateUniscribeData(es);
3901 }
3902
3903
3904 /*********************************************************************
3905 *
3906 * WM_SIZE
3907 *
3908 */
3909 static void EDIT_WM_Size(EDITSTATE *es, UINT action, INT width, INT height)
3910 {
3911 if ((action == SIZE_MAXIMIZED) || (action == SIZE_RESTORED)) {
3912 RECT rc;
3913 TRACE("width = %d, height = %d\n", width, height);
3914 SetRect(&rc, 0, 0, width, height);
3915 EDIT_SetRectNP(es, &rc);
3916 EDIT_UpdateText(es, NULL, TRUE);
3917 }
3918 }
3919
3920
3921 /*********************************************************************
3922 *
3923 * WM_STYLECHANGED
3924 *
3925 * This message is sent by SetWindowLong on having changed either the Style
3926 * or the extended style.
3927 *
3928 * We ensure that the window's version of the styles and the EDITSTATE's agree.
3929 *
3930 * See also EDIT_WM_NCCreate
3931 *
3932 * It appears that the Windows version of the edit control allows the style
3933 * (as retrieved by GetWindowLong) to be any value and maintains an internal
3934 * style variable which will generally be different. In this function we
3935 * update the internal style based on what changed in the externally visible
3936 * style.
3937 *
3938 * Much of this content as based upon the MSDN, especially:
3939 * Platform SDK Documentation -> User Interface Services ->
3940 * Windows User Interface -> Edit Controls -> Edit Control Reference ->
3941 * Edit Control Styles
3942 */
3943 static LRESULT EDIT_WM_StyleChanged ( EDITSTATE *es, WPARAM which, const STYLESTRUCT *style)
3944 {
3945 if (GWL_STYLE == which) {
3946 DWORD style_change_mask;
3947 DWORD new_style;
3948 /* Only a subset of changes can be applied after the control
3949 * has been created.
3950 */
3951 style_change_mask = ES_UPPERCASE | ES_LOWERCASE |
3952 ES_NUMBER;
3953 if (es->style & ES_MULTILINE)
3954 style_change_mask |= ES_WANTRETURN;
3955
3956 new_style = style->styleNew & style_change_mask;
3957
3958 /* Number overrides lowercase overrides uppercase (at least it
3959 * does in Win95). However I'll bet that ES_NUMBER would be
3960 * invalid under Win 3.1.
3961 */
3962 if (new_style & ES_NUMBER) {
3963 ; /* do not override the ES_NUMBER */
3964 } else if (new_style & ES_LOWERCASE) {
3965 new_style &= ~ES_UPPERCASE;
3966 }
3967
3968 es->style = (es->style & ~style_change_mask) | new_style;
3969 } else if (GWL_EXSTYLE == which) {
3970 ; /* FIXME - what is needed here */
3971 } else {
3972 WARN ("Invalid style change %ld\n",which);
3973 }
3974
3975 return 0;
3976 }
3977
3978 /*********************************************************************
3979 *
3980 * WM_SYSKEYDOWN
3981 *
3982 */
3983 static LRESULT EDIT_WM_SysKeyDown(EDITSTATE *es, INT key, DWORD key_data)
3984 {
3985 if ((key == VK_BACK) && (key_data & 0x2000)) {
3986 if (EDIT_EM_CanUndo(es))
3987 EDIT_EM_Undo(es);
3988 return 0;
3989 } else if (key == VK_UP || key == VK_DOWN) {
3990 if (EDIT_CheckCombo(es, WM_SYSKEYDOWN, key))
3991 return 0;
3992 }
3993 return DefWindowProcW(es->hwndSelf, WM_SYSKEYDOWN, key, key_data);
3994 }
3995
3996
3997 /*********************************************************************
3998 *
3999 * WM_TIMER
4000 *
4001 */
4002 static void EDIT_WM_Timer(EDITSTATE *es)
4003 {
4004 if (es->region_posx < 0) {
4005 EDIT_MoveBackward(es, TRUE);
4006 } else if (es->region_posx > 0) {
4007 EDIT_MoveForward(es, TRUE);
4008 }
4009 /*
4010 * FIXME: gotta do some vertical scrolling here, like
4011 * EDIT_EM_LineScroll(hwnd, 0, 1);
4012 */
4013 }
4014
4015 /*********************************************************************
4016 *
4017 * WM_HSCROLL
4018 *
4019 */
4020 static LRESULT EDIT_WM_HScroll(EDITSTATE *es, INT action, INT pos)
4021 {
4022 INT dx;
4023 INT fw;
4024
4025 if (!(es->style & ES_MULTILINE))
4026 return 0;
4027
4028 if (!(es->style & ES_AUTOHSCROLL))
4029 return 0;
4030
4031 dx = 0;
4032 fw = es->format_rect.right - es->format_rect.left;
4033 switch (action) {
4034 case SB_LINELEFT:
4035 TRACE("SB_LINELEFT\n");
4036 if (es->x_offset)
4037 dx = -es->char_width;
4038 break;
4039 case SB_LINERIGHT:
4040 TRACE("SB_LINERIGHT\n");
4041 if (es->x_offset < es->text_width)
4042 dx = es->char_width;
4043 break;
4044 case SB_PAGELEFT:
4045 TRACE("SB_PAGELEFT\n");
4046 if (es->x_offset)
4047 dx = -fw / HSCROLL_FRACTION / es->char_width * es->char_width;
4048 break;
4049 case SB_PAGERIGHT:
4050 TRACE("SB_PAGERIGHT\n");
4051 if (es->x_offset < es->text_width)
4052 dx = fw / HSCROLL_FRACTION / es->char_width * es->char_width;
4053 break;
4054 case SB_LEFT:
4055 TRACE("SB_LEFT\n");
4056 if (es->x_offset)
4057 dx = -es->x_offset;
4058 break;
4059 case SB_RIGHT:
4060 TRACE("SB_RIGHT\n");
4061 if (es->x_offset < es->text_width)
4062 dx = es->text_width - es->x_offset;
4063 break;
4064 case SB_THUMBTRACK:
4065 TRACE("SB_THUMBTRACK %d\n", pos);
4066 es->flags |= EF_HSCROLL_TRACK;
4067 if(es->style & WS_HSCROLL)
4068 dx = pos - es->x_offset;
4069 else
4070 {
4071 INT fw, new_x;
4072 /* Sanity check */
4073 if(pos < 0 || pos > 100) return 0;
4074 /* Assume default scroll range 0-100 */
4075 fw = es->format_rect.right - es->format_rect.left;
4076 new_x = pos * (es->text_width - fw) / 100;
4077 dx = es->text_width ? (new_x - es->x_offset) : 0;
4078 }
4079 break;
4080 case SB_THUMBPOSITION:
4081 TRACE("SB_THUMBPOSITION %d\n", pos);
4082 es->flags &= ~EF_HSCROLL_TRACK;
4083 if(GetWindowLongW( es->hwndSelf, GWL_STYLE ) & WS_HSCROLL)
4084 dx = pos - es->x_offset;
4085 else
4086 {
4087 INT fw, new_x;
4088 /* Sanity check */
4089 if(pos < 0 || pos > 100) return 0;
4090 /* Assume default scroll range 0-100 */
4091 fw = es->format_rect.right - es->format_rect.left;
4092 new_x = pos * (es->text_width - fw) / 100;
4093 dx = es->text_width ? (new_x - es->x_offset) : 0;
4094 }
4095 if (!dx) {
4096 /* force scroll info update */
4097 EDIT_UpdateScrollInfo(es);
4098 EDIT_NOTIFY_PARENT(es, EN_HSCROLL);
4099 }
4100 break;
4101 case SB_ENDSCROLL:
4102 TRACE("SB_ENDSCROLL\n");
4103 break;
4104 /*
4105 * FIXME : the next two are undocumented !
4106 * Are we doing the right thing ?
4107 * At least Win 3.1 Notepad makes use of EM_GETTHUMB this way,
4108 * although it's also a regular control message.
4109 */
4110 case EM_GETTHUMB: /* this one is used by NT notepad */
4111 {
4112 LRESULT ret;
4113 if(GetWindowLongW( es->hwndSelf, GWL_STYLE ) & WS_HSCROLL)
4114 ret = GetScrollPos(es->hwndSelf, SB_HORZ);
4115 else
4116 {
4117 /* Assume default scroll range 0-100 */
4118 INT fw = es->format_rect.right - es->format_rect.left;
4119 ret = es->text_width ? es->x_offset * 100 / (es->text_width - fw) : 0;
4120 }
4121 TRACE("EM_GETTHUMB: returning %ld\n", ret);
4122 return ret;
4123 }
4124 case EM_LINESCROLL:
4125 TRACE("EM_LINESCROLL16\n");
4126 dx = pos;
4127 break;
4128
4129 default:
4130 ERR("undocumented WM_HSCROLL action %d (0x%04x), please report\n",
4131 action, action);
4132 return 0;
4133 }
4134 if (dx)
4135 {
4136 INT fw = es->format_rect.right - es->format_rect.left;
4137 /* check if we are going to move too far */
4138 if(es->x_offset + dx + fw > es->text_width)
4139 dx = es->text_width - fw - es->x_offset;
4140 if(dx)
4141 EDIT_EM_LineScroll_internal(es, dx, 0);
4142 }
4143 return 0;
4144 }
4145
4146
4147 /*********************************************************************
4148 *
4149 * WM_VSCROLL
4150 *
4151 */
4152 static LRESULT EDIT_WM_VScroll(EDITSTATE *es, INT action, INT pos)
4153 {
4154 INT dy;
4155
4156 if (!(es->style & ES_MULTILINE))
4157 return 0;
4158
4159 if (!(es->style & ES_AUTOVSCROLL))
4160 return 0;
4161
4162 dy = 0;
4163 switch (action) {
4164 case SB_LINEUP:
4165 case SB_LINEDOWN:
4166 case SB_PAGEUP:
4167 case SB_PAGEDOWN:
4168 TRACE("action %d (%s)\n", action, (action == SB_LINEUP ? "SB_LINEUP" :
4169 (action == SB_LINEDOWN ? "SB_LINEDOWN" :
4170 (action == SB_PAGEUP ? "SB_PAGEUP" :
4171 "SB_PAGEDOWN"))));
4172 EDIT_EM_Scroll(es, action);
4173 return 0;
4174 case SB_TOP:
4175 TRACE("SB_TOP\n");
4176 dy = -es->y_offset;
4177 break;
4178 case SB_BOTTOM:
4179 TRACE("SB_BOTTOM\n");
4180 dy = es->line_count - 1 - es->y_offset;
4181 break;
4182 case SB_THUMBTRACK:
4183 TRACE("SB_THUMBTRACK %d\n", pos);
4184 es->flags |= EF_VSCROLL_TRACK;
4185 if(es->style & WS_VSCROLL)
4186 dy = pos - es->y_offset;
4187 else
4188 {
4189 /* Assume default scroll range 0-100 */
4190 INT vlc, new_y;
4191 /* Sanity check */
4192 if(pos < 0 || pos > 100) return 0;
4193 vlc = get_vertical_line_count(es);
4194 new_y = pos * (es->line_count - vlc) / 100;
4195 dy = es->line_count ? (new_y - es->y_offset) : 0;
4196 TRACE("line_count=%d, y_offset=%d, pos=%d, dy = %d\n",
4197 es->line_count, es->y_offset, pos, dy);
4198 }
4199 break;
4200 case SB_THUMBPOSITION:
4201 TRACE("SB_THUMBPOSITION %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 if (!dy)
4218 {
4219 /* force scroll info update */
4220 EDIT_UpdateScrollInfo(es);
4221 EDIT_NOTIFY_PARENT(es, EN_VSCROLL);
4222 }
4223 break;
4224 case SB_ENDSCROLL:
4225 TRACE("SB_ENDSCROLL\n");
4226 break;
4227 /*
4228 * FIXME : the next two are undocumented !
4229 * Are we doing the right thing ?
4230 * At least Win 3.1 Notepad makes use of EM_GETTHUMB this way,
4231 * although it's also a regular control message.
4232 */
4233 case EM_GETTHUMB: /* this one is used by NT notepad */
4234 {
4235 LRESULT ret;
4236 if(GetWindowLongW( es->hwndSelf, GWL_STYLE ) & WS_VSCROLL)
4237 ret = GetScrollPos(es->hwndSelf, SB_VERT);
4238 else
4239 {
4240 /* Assume default scroll range 0-100 */
4241 INT vlc = get_vertical_line_count(es);
4242 ret = es->line_count ? es->y_offset * 100 / (es->line_count - vlc) : 0;
4243 }
4244 TRACE("EM_GETTHUMB: returning %ld\n", ret);
4245 return ret;
4246 }
4247 case EM_LINESCROLL:
4248 TRACE("EM_LINESCROLL %d\n", pos);
4249 dy = pos;
4250 break;
4251
4252 default:
4253 ERR("undocumented WM_VSCROLL action %d (0x%04x), please report\n",
4254 action, action);
4255 return 0;
4256 }
4257 if (dy)
4258 EDIT_EM_LineScroll(es, 0, dy);
4259 return 0;
4260 }
4261
4262 /*********************************************************************
4263 *
4264 * EM_GETTHUMB
4265 *
4266 * FIXME: is this right ? (or should it be only VSCROLL)
4267 * (and maybe only for edit controls that really have their
4268 * own scrollbars) (and maybe only for multiline controls ?)
4269 * All in all: very poorly documented
4270 *
4271 */
4272 static LRESULT EDIT_EM_GetThumb(EDITSTATE *es)
4273 {
4274 return MAKELONG(EDIT_WM_VScroll(es, EM_GETTHUMB, 0),
4275 EDIT_WM_HScroll(es, EM_GETTHUMB, 0));
4276 }
4277
4278
4279 /********************************************************************
4280 *
4281 * The Following code is to handle inline editing from IMEs
4282 */
4283
4284 static void EDIT_GetCompositionStr(HIMC hIMC, LPARAM CompFlag, EDITSTATE *es)
4285 {
4286 LONG buflen;
4287 LPWSTR lpCompStr = NULL;
4288 LPSTR lpCompStrAttr = NULL;
4289 DWORD dwBufLenAttr;
4290
4291 buflen = ImmGetCompositionStringW(hIMC, GCS_COMPSTR, NULL, 0);
4292
4293 if (buflen < 0)
4294 {
4295 return;
4296 }
4297
4298 lpCompStr = HeapAlloc(GetProcessHeap(),0,buflen + sizeof(WCHAR));
4299 if (!lpCompStr)
4300 {
4301 ERR("Unable to allocate IME CompositionString\n");
4302 return;
4303 }
4304
4305 if (buflen)
4306 ImmGetCompositionStringW(hIMC, GCS_COMPSTR, lpCompStr, buflen);
4307 lpCompStr[buflen/sizeof(WCHAR)] = 0;
4308
4309 if (CompFlag & GCS_COMPATTR)
4310 {
4311 /*
4312 * We do not use the attributes yet. it would tell us what characters
4313 * are in transition and which are converted or decided upon
4314 */
4315 dwBufLenAttr = ImmGetCompositionStringW(hIMC, GCS_COMPATTR, NULL, 0);
4316 if (dwBufLenAttr)
4317 {
4318 dwBufLenAttr ++;
4319 lpCompStrAttr = HeapAlloc(GetProcessHeap(),0,dwBufLenAttr+1);
4320 if (!lpCompStrAttr)
4321 {
4322 ERR("Unable to allocate IME Attribute String\n");
4323 HeapFree(GetProcessHeap(),0,lpCompStr);
4324 return;
4325 }
4326 ImmGetCompositionStringW(hIMC,GCS_COMPATTR, lpCompStrAttr,
4327 dwBufLenAttr);
4328 lpCompStrAttr[dwBufLenAttr] = 0;
4329 }
4330 else
4331 lpCompStrAttr = NULL;
4332 }
4333
4334 /* check for change in composition start */
4335 if (es->selection_end < es->composition_start)
4336 es->composition_start = es->selection_end;
4337
4338 /* replace existing selection string */
4339 es->selection_start = es->composition_start;
4340
4341 if (es->composition_len > 0)
4342 es->selection_end = es->composition_start + es->composition_len;
4343 else
4344 es->selection_end = es->selection_start;
4345
4346 EDIT_EM_ReplaceSel(es, FALSE, lpCompStr, TRUE, TRUE);
4347 es->composition_len = abs(es->composition_start - es->selection_end);
4348
4349 es->selection_start = es->composition_start;
4350 es->selection_end = es->selection_start + es->composition_len;
4351
4352 HeapFree(GetProcessHeap(),0,lpCompStrAttr);
4353 HeapFree(GetProcessHeap(),0,lpCompStr);
4354 }
4355
4356 static void EDIT_GetResultStr(HIMC hIMC, EDITSTATE *es)
4357 {
4358 LONG buflen;
4359 LPWSTR lpResultStr;
4360
4361 buflen = ImmGetCompositionStringW(hIMC, GCS_RESULTSTR, NULL, 0);
4362 if (buflen <= 0)
4363 {
4364 return;
4365 }
4366
4367 lpResultStr = HeapAlloc(GetProcessHeap(),0, buflen+sizeof(WCHAR));
4368 if (!lpResultStr)
4369 {
4370 ERR("Unable to alloc buffer for IME string\n");
4371 return;
4372 }
4373
4374 ImmGetCompositionStringW(hIMC, GCS_RESULTSTR, lpResultStr, buflen);
4375 lpResultStr[buflen/sizeof(WCHAR)] = 0;
4376
4377 /* check for change in composition start */
4378 if (es->selection_end < es->composition_start)
4379 es->composition_start = es->selection_end;
4380
4381 es->selection_start = es->composition_start;
4382 es->selection_end = es->composition_start + es->composition_len;
4383 EDIT_EM_ReplaceSel(es, TRUE, lpResultStr, TRUE, TRUE);
4384 es->composition_start = es->selection_end;
4385 es->composition_len = 0;
4386
4387 HeapFree(GetProcessHeap(),0,lpResultStr);
4388 }
4389
4390 static void EDIT_ImeComposition(HWND hwnd, LPARAM CompFlag, EDITSTATE *es)
4391 {
4392 HIMC hIMC;
4393 int cursor;
4394
4395 if (es->composition_len == 0 && es->selection_start != es->selection_end)
4396 {
4397 EDIT_EM_ReplaceSel(es, TRUE, empty_stringW, TRUE, TRUE);
4398 es->composition_start = es->selection_end;
4399 }
4400
4401 hIMC = ImmGetContext(hwnd);
4402 if (!hIMC)
4403 return;
4404
4405 if (CompFlag & GCS_RESULTSTR)
4406 EDIT_GetResultStr(hIMC, es);
4407 if (CompFlag & GCS_COMPSTR)
4408 EDIT_GetCompositionStr(hIMC, CompFlag, es);
4409 cursor = ImmGetCompositionStringW(hIMC, GCS_CURSORPOS, 0, 0);
4410 ImmReleaseContext(hwnd, hIMC);
4411 EDIT_SetCaretPos(es, es->selection_start + cursor, es->flags & EF_AFTER_WRAP);
4412 }
4413
4414
4415 /*********************************************************************
4416 *
4417 * WM_NCCREATE
4418 *
4419 * See also EDIT_WM_StyleChanged
4420 */
4421 static LRESULT EDIT_WM_NCCreate(HWND hwnd, LPCREATESTRUCTW lpcs, BOOL unicode)
4422 {
4423 EDITSTATE *es;
4424 UINT alloc_size;
4425
4426 TRACE("Creating %s edit control, style = %08x\n",
4427 unicode ? "Unicode" : "ANSI", lpcs->style);
4428
4429 if (!(es = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, sizeof(*es))))
4430 return FALSE;
4431 SetWindowLongPtrW( hwnd, 0, (LONG_PTR)es );
4432
4433 /*
4434 * Note: since the EDITSTATE has not been fully initialized yet,
4435 * we can't use any API calls that may send
4436 * WM_XXX messages before WM_NCCREATE is completed.
4437 */
4438
4439 es->is_unicode = unicode;
4440 es->style = lpcs->style;
4441
4442 es->bEnableState = !(es->style & WS_DISABLED);
4443
4444 es->hwndSelf = hwnd;
4445 /* Save parent, which will be notified by EN_* messages */
4446 es->hwndParent = lpcs->hwndParent;
4447
4448 if (es->style & ES_COMBO)
4449 es->hwndListBox = GetDlgItem(es->hwndParent, ID_CB_LISTBOX);
4450
4451 /* FIXME: should we handle changes to WS_EX_RIGHT style after creation? */
4452 if (lpcs->dwExStyle & WS_EX_RIGHT) es->style |= ES_RIGHT;
4453
4454 /* Number overrides lowercase overrides uppercase (at least it
4455 * does in Win95). However I'll bet that ES_NUMBER would be
4456 * invalid under Win 3.1.
4457 */
4458 if (es->style & ES_NUMBER) {
4459 ; /* do not override the ES_NUMBER */
4460 } else if (es->style & ES_LOWERCASE) {
4461 es->style &= ~ES_UPPERCASE;
4462 }
4463 if (es->style & ES_MULTILINE) {
4464 es->buffer_limit = BUFLIMIT_INITIAL;
4465 if (es->style & WS_VSCROLL)
4466 es->style |= ES_AUTOVSCROLL;
4467 if (es->style & WS_HSCROLL)
4468 es->style |= ES_AUTOHSCROLL;
4469 es->style &= ~ES_PASSWORD;
4470 if ((es->style & ES_CENTER) || (es->style & ES_RIGHT)) {
4471 /* Confirmed - RIGHT overrides CENTER */
4472 if (es->style & ES_RIGHT)
4473 es->style &= ~ES_CENTER;
4474 es->style &= ~WS_HSCROLL;
4475 es->style &= ~ES_AUTOHSCROLL;
4476 }
4477 } else {
4478 es->buffer_limit = BUFLIMIT_INITIAL;
4479 if ((es->style & ES_RIGHT) && (es->style & ES_CENTER))
4480 es->style &= ~ES_CENTER;
4481 es->style &= ~WS_HSCROLL;
4482 es->style &= ~WS_VSCROLL;
4483 if (es->style & ES_PASSWORD)
4484 es->password_char = '*';
4485 }
4486
4487 alloc_size = ROUND_TO_GROW((es->buffer_size + 1) * sizeof(WCHAR));
4488 if(!(es->hloc32W = LocalAlloc(LMEM_MOVEABLE | LMEM_ZEROINIT, alloc_size)))
4489 goto cleanup;
4490 es->buffer_size = LocalSize(es->hloc32W)/sizeof(WCHAR) - 1;
4491
4492 if (!(es->undo_text = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, (es->buffer_size + 1) * sizeof(WCHAR))))
4493 goto cleanup;
4494 es->undo_buffer_size = es->buffer_size;
4495
4496 if (es->style & ES_MULTILINE)
4497 if (!(es->first_line_def = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, sizeof(LINEDEF))))
4498 goto cleanup;
4499 es->line_count = 1;
4500
4501 /*
4502 * In Win95 look and feel, the WS_BORDER style is replaced by the
4503 * WS_EX_CLIENTEDGE style for the edit control. This gives the edit
4504 * control a nonclient area so we don't need to draw the border.
4505 * If WS_BORDER without WS_EX_CLIENTEDGE is specified we shouldn't have
4506 * a nonclient area and we should handle painting the border ourselves.
4507 *
4508 * When making modifications please ensure that the code still works
4509 * for edit controls created directly with style 0x50800000, exStyle 0
4510 * (which should have a single pixel border)
4511 */
4512 if (lpcs->dwExStyle & WS_EX_CLIENTEDGE)
4513 es->style &= ~WS_BORDER;
4514 else if (es->style & WS_BORDER)
4515 SetWindowLongW(hwnd, GWL_STYLE, es->style & ~WS_BORDER);
4516
4517 return TRUE;
4518
4519 cleanup:
4520 SetWindowLongPtrW(es->hwndSelf, 0, 0);
4521 EDIT_InvalidateUniscribeData(es);
4522 HeapFree(GetProcessHeap(), 0, es->first_line_def);
4523 HeapFree(GetProcessHeap(), 0, es->undo_text);
4524 if (es->hloc32W) LocalFree(es->hloc32W);
4525 HeapFree(GetProcessHeap(), 0, es->logAttr);
4526 HeapFree(GetProcessHeap(), 0, es);
4527 return FALSE;
4528 }
4529
4530
4531 /*********************************************************************
4532 *
4533 * WM_CREATE
4534 *
4535 */
4536 static LRESULT EDIT_WM_Create(EDITSTATE *es, LPCWSTR name)
4537 {
4538 RECT clientRect;
4539
4540 TRACE("%s\n", debugstr_w(name));
4541 /*
4542 * To initialize some final structure members, we call some helper
4543 * functions. However, since the EDITSTATE is not consistent (i.e.
4544 * not fully initialized), we should be very careful which
4545 * functions can be called, and in what order.
4546 */
4547 EDIT_WM_SetFont(es, 0, FALSE);
4548 EDIT_EM_EmptyUndoBuffer(es);
4549
4550 /* We need to calculate the format rect
4551 (applications may send EM_SETMARGINS before the control gets visible) */
4552 GetClientRect(es->hwndSelf, &clientRect);
4553 EDIT_SetRectNP(es, &clientRect);
4554
4555 if (name && *name) {
4556 EDIT_EM_ReplaceSel(es, FALSE, name, FALSE, FALSE);
4557 /* if we insert text to the editline, the text scrolls out
4558 * of the window, as the caret is placed after the insert
4559 * pos normally; thus we reset es->selection... to 0 and
4560 * update caret
4561 */
4562 es->selection_start = es->selection_end = 0;
4563 /* Adobe Photoshop does NOT like this. and MSDN says that EN_CHANGE
4564 * Messages are only to be sent when the USER does something to
4565 * change the contents. So I am removing this EN_CHANGE
4566 *
4567 * EDIT_NOTIFY_PARENT(es, EN_CHANGE);
4568 */
4569 EDIT_EM_ScrollCaret(es);
4570 }
4571 /* force scroll info update */
4572 EDIT_UpdateScrollInfo(es);
4573 /* The rule seems to return 1 here for success */
4574 /* Power Builder masked edit controls will crash */
4575 /* if not. */
4576 /* FIXME: is that in all cases so ? */
4577 return 1;
4578 }
4579
4580
4581 /*********************************************************************
4582 *
4583 * WM_NCDESTROY
4584 *
4585 */
4586 static LRESULT EDIT_WM_NCDestroy(EDITSTATE *es)
4587 {
4588 LINEDEF *pc, *pp;
4589
4590 if (es->hloc32W) {
4591 LocalFree(es->hloc32W);
4592 }
4593 if (es->hloc32A) {
4594 LocalFree(es->hloc32A);
4595 }
4596 pc = es->first_line_def;
4597 while (pc)
4598 {
4599 pp = pc->next;
4600 HeapFree(GetProcessHeap(), 0, pc);
4601 pc = pp;
4602 }
4603
4604 EDIT_InvalidateUniscribeData(es);
4605 SetWindowLongPtrW( es->hwndSelf, 0, 0 );
4606 HeapFree(GetProcessHeap(), 0, es->undo_text);
4607 HeapFree(GetProcessHeap(), 0, es);
4608
4609 return 0;
4610 }
4611
4612
4613 static inline LRESULT DefWindowProcT(HWND hwnd, UINT msg, WPARAM wParam, LPARAM lParam, BOOL unicode)
4614 {
4615 if(unicode)
4616 return DefWindowProcW(hwnd, msg, wParam, lParam);
4617 else
4618 return DefWindowProcA(hwnd, msg, wParam, lParam);
4619 }
4620
4621 /*********************************************************************
4622 *
4623 * EditWndProc_common
4624 *
4625 * The messages are in the order of the actual integer values
4626 * (which can be found in include/windows.h)
4627 */
4628 LRESULT EditWndProc_common( HWND hwnd, UINT msg, WPARAM wParam, LPARAM lParam, BOOL unicode )
4629 {
4630 EDITSTATE *es = (EDITSTATE *)GetWindowLongPtrW( hwnd, 0 );
4631 LRESULT result = 0;
4632
4633 TRACE("hwnd=%p msg=%x (%s) wparam=%lx lparam=%lx\n", hwnd, msg, SPY_GetMsgName(msg, hwnd), wParam, lParam);
4634
4635 if (!es && msg != WM_NCCREATE)
4636 return DefWindowProcT(hwnd, msg, wParam, lParam, unicode);
4637
4638 if (es && (msg != WM_NCDESTROY)) EDIT_LockBuffer(es);
4639
4640 switch (msg) {
4641 case EM_GETSEL:
4642 result = EDIT_EM_GetSel(es, (PUINT)wParam, (PUINT)lParam);
4643 break;
4644
4645 case EM_SETSEL:
4646 EDIT_EM_SetSel(es, wParam, lParam, FALSE);
4647 EDIT_EM_ScrollCaret(es);
4648 result = 1;
4649 break;
4650
4651 case EM_GETRECT:
4652 if (lParam)
4653 CopyRect((LPRECT)lParam, &es->format_rect);
4654 break;
4655
4656 case EM_SETRECT:
4657 if ((es->style & ES_MULTILINE) && lParam) {
4658 EDIT_SetRectNP(es, (LPRECT)lParam);
4659 EDIT_UpdateText(es, NULL, TRUE);
4660 }
4661 break;
4662
4663 case EM_SETRECTNP:
4664 if ((es->style & ES_MULTILINE) && lParam)
4665 EDIT_SetRectNP(es, (LPRECT)lParam);
4666 break;
4667
4668 case EM_SCROLL:
4669 result = EDIT_EM_Scroll(es, (INT)wParam);
4670 break;
4671
4672 case EM_LINESCROLL:
4673 result = (LRESULT)EDIT_EM_LineScroll(es, (INT)wParam, (INT)lParam);
4674 break;
4675
4676 case EM_SCROLLCARET:
4677 EDIT_EM_ScrollCaret(es);
4678 result = 1;
4679 break;
4680
4681 case EM_GETMODIFY:
4682 result = ((es->flags & EF_MODIFIED) != 0);
4683 break;
4684
4685 case EM_SETMODIFY:
4686 if (wParam)
4687 es->flags |= EF_MODIFIED;
4688 else
4689 es->flags &= ~(EF_MODIFIED | EF_UPDATE); /* reset pending updates */
4690 break;
4691
4692 case EM_GETLINECOUNT:
4693 result = (es->style & ES_MULTILINE) ? es->line_count : 1;
4694 break;
4695
4696 case EM_LINEINDEX:
4697 result = (LRESULT)EDIT_EM_LineIndex(es, (INT)wParam);
4698 break;
4699
4700 case EM_SETHANDLE:
4701 EDIT_EM_SetHandle(es, (HLOCAL)wParam);
4702 break;
4703
4704 case EM_GETHANDLE:
4705 result = (LRESULT)EDIT_EM_GetHandle(es);
4706 break;
4707
4708 case EM_GETTHUMB:
4709 result = EDIT_EM_GetThumb(es);
4710 break;
4711
4712 /* these messages missing from specs */
4713 case 0x00bf:
4714 case 0x00c0:
4715 case 0x00c3:
4716 case 0x00ca:
4717 FIXME("undocumented message 0x%x, please report\n", msg);
4718 result = DefWindowProcW(hwnd, msg, wParam, lParam);
4719 break;
4720
4721 case EM_LINELENGTH:
4722 result = (LRESULT)EDIT_EM_LineLength(es, (INT)wParam);
4723 break;
4724
4725 case EM_REPLACESEL:
4726 {
4727 LPWSTR textW;
4728
4729 if(unicode)
4730 textW = (LPWSTR)lParam;
4731 else
4732 {
4733 LPSTR textA = (LPSTR)lParam;
4734 INT countW = MultiByteToWideChar(CP_ACP, 0, textA, -1, NULL, 0);
4735 if (!(textW = HeapAlloc(GetProcessHeap(), 0, countW * sizeof(WCHAR)))) break;
4736 MultiByteToWideChar(CP_ACP, 0, textA, -1, textW, countW);
4737 }
4738
4739 EDIT_EM_ReplaceSel(es, (BOOL)wParam, textW, TRUE, TRUE);
4740 result = 1;
4741
4742 if(!unicode)
4743 HeapFree(GetProcessHeap(), 0, textW);
4744 break;
4745 }
4746
4747 case EM_GETLINE:
4748 result = (LRESULT)EDIT_EM_GetLine(es, (INT)wParam, (LPWSTR)lParam, unicode);
4749 break;
4750
4751 case EM_SETLIMITTEXT:
4752 EDIT_EM_SetLimitText(es, wParam);
4753 break;
4754
4755 case EM_CANUNDO:
4756 result = (LRESULT)EDIT_EM_CanUndo(es);
4757 break;
4758
4759 case EM_UNDO:
4760 case WM_UNDO:
4761 result = (LRESULT)EDIT_EM_Undo(es);
4762 break;
4763
4764 case EM_FMTLINES:
4765 result = (LRESULT)EDIT_EM_FmtLines(es, (BOOL)wParam);
4766 break;
4767
4768 case EM_LINEFROMCHAR:
4769 result = (LRESULT)EDIT_EM_LineFromChar(es, (INT)wParam);
4770 break;
4771
4772 case EM_SETTABSTOPS:
4773 result = (LRESULT)EDIT_EM_SetTabStops(es, (INT)wParam, (LPINT)lParam);
4774 break;
4775
4776 case EM_SETPASSWORDCHAR:
4777 {
4778 WCHAR charW = 0;
4779
4780 if(unicode)
4781 charW = (WCHAR)wParam;
4782 else
4783 {
4784 CHAR charA = wParam;
4785 MultiByteToWideChar(CP_ACP, 0, &charA, 1, &charW, 1);
4786 }
4787
4788 EDIT_EM_SetPasswordChar(es, charW);
4789 break;
4790 }
4791
4792 case EM_EMPTYUNDOBUFFER:
4793 EDIT_EM_EmptyUndoBuffer(es);
4794 break;
4795
4796 case EM_GETFIRSTVISIBLELINE:
4797 result = (es->style & ES_MULTILINE) ? es->y_offset : es->x_offset;
4798 break;
4799
4800 case EM_SETREADONLY:
4801 {
4802 DWORD old_style = es->style;
4803
4804 if (wParam) {
4805 SetWindowLongW( hwnd, GWL_STYLE,
4806 GetWindowLongW( hwnd, GWL_STYLE ) | ES_READONLY );
4807 es->style |= ES_READONLY;
4808 } else {
4809 SetWindowLongW( hwnd, GWL_STYLE,
4810 GetWindowLongW( hwnd, GWL_STYLE ) & ~ES_READONLY );
4811 es->style &= ~ES_READONLY;
4812 }
4813
4814 if (old_style ^ es->style)
4815 InvalidateRect(es->hwndSelf, NULL, TRUE);
4816
4817 result = 1;
4818 break;
4819 }
4820
4821 case EM_SETWORDBREAKPROC:
4822 EDIT_EM_SetWordBreakProc(es, (void *)lParam);
4823 break;
4824
4825 case EM_GETWORDBREAKPROC:
4826 result = (LRESULT)es->word_break_proc;
4827 break;
4828
4829 case EM_GETPASSWORDCHAR:
4830 {
4831 if(unicode)
4832 result = es->password_char;
4833 else
4834 {
4835 WCHAR charW = es->password_char;
4836 CHAR charA = 0;
4837 WideCharToMultiByte(CP_ACP, 0, &charW, 1, &charA, 1, NULL, NULL);
4838 result = charA;
4839 }
4840 break;
4841 }
4842
4843 case EM_SETMARGINS:
4844 EDIT_EM_SetMargins(es, (INT)wParam, LOWORD(lParam), HIWORD(lParam), TRUE);
4845 break;
4846
4847 case EM_GETMARGINS:
4848 result = MAKELONG(es->left_margin, es->right_margin);
4849 break;
4850
4851 case EM_GETLIMITTEXT:
4852 result = es->buffer_limit;
4853 break;
4854
4855 case EM_POSFROMCHAR:
4856 if ((INT)wParam >= get_text_length(es)) result = -1;
4857 else result = EDIT_EM_PosFromChar(es, (INT)wParam, FALSE);
4858 break;
4859
4860 case EM_CHARFROMPOS:
4861 result = EDIT_EM_CharFromPos(es, (short)LOWORD(lParam), (short)HIWORD(lParam));
4862 break;
4863
4864 /* End of the EM_ messages which were in numerical order; what order
4865 * are these in? vaguely alphabetical?
4866 */
4867
4868 case WM_NCCREATE:
4869 result = EDIT_WM_NCCreate(hwnd, (LPCREATESTRUCTW)lParam, unicode);
4870 break;
4871
4872 case WM_NCDESTROY:
4873 result = EDIT_WM_NCDestroy(es);
4874 es = NULL;
4875 break;
4876
4877 case WM_GETDLGCODE:
4878 result = DLGC_HASSETSEL | DLGC_WANTCHARS | DLGC_WANTARROWS;
4879
4880 if (es->style & ES_MULTILINE)
4881 result |= DLGC_WANTALLKEYS;
4882
4883 if (lParam)
4884 {
4885 es->flags|=EF_DIALOGMODE;
4886
4887 if (((LPMSG)lParam)->message == WM_KEYDOWN)
4888 {
4889 int vk = (int)((LPMSG)lParam)->wParam;
4890
4891 if (es->hwndListBox)
4892 {
4893 if (vk == VK_RETURN || vk == VK_ESCAPE)
4894 if (SendMessageW(GetParent(hwnd), CB_GETDROPPEDSTATE, 0, 0))
4895 result |= DLGC_WANTMESSAGE;
4896 }
4897 }
4898 }
4899 break;
4900
4901 case WM_IME_CHAR:
4902 if (!unicode)
4903 {
4904 WCHAR charW;
4905 CHAR strng[2];
4906
4907 strng[0] = wParam >> 8;
4908 strng[1] = wParam & 0xff;
4909 if (strng[0]) MultiByteToWideChar(CP_ACP, 0, strng, 2, &charW, 1);
4910 else MultiByteToWideChar(CP_ACP, 0, &strng[1], 1, &charW, 1);
4911 result = EDIT_WM_Char(es, charW);
4912 break;
4913 }
4914 /* fall through */
4915 case WM_CHAR:
4916 {
4917 WCHAR charW;
4918
4919 if(unicode)
4920 charW = wParam;
4921 else
4922 {
4923 CHAR charA = wParam;
4924 MultiByteToWideChar(CP_ACP, 0, &charA, 1, &charW, 1);
4925 }
4926
4927 if (es->hwndListBox)
4928 {
4929 if (charW == VK_RETURN || charW == VK_ESCAPE)
4930 {
4931 if (SendMessageW(GetParent(hwnd), CB_GETDROPPEDSTATE, 0, 0))
4932 SendMessageW(GetParent(hwnd), WM_KEYDOWN, charW, 0);
4933 break;
4934 }
4935 }
4936 result = EDIT_WM_Char(es, charW);
4937 break;
4938 }
4939
4940 case WM_UNICHAR:
4941 if (unicode)
4942 {
4943 if (wParam == UNICODE_NOCHAR) return TRUE;
4944 if (wParam <= 0x000fffff)
4945 {
4946 if(wParam > 0xffff) /* convert to surrogates */
4947 {
4948 wParam -= 0x10000;
4949 EDIT_WM_Char(es, (wParam >> 10) + 0xd800);
4950 EDIT_WM_Char(es, (wParam & 0x03ff) + 0xdc00);
4951 }
4952 else EDIT_WM_Char(es, wParam);
4953 }
4954 return 0;
4955 }
4956 break;
4957
4958 case WM_CLEAR:
4959 EDIT_WM_Clear(es);
4960 break;
4961
4962 case WM_COMMAND:
4963 EDIT_WM_Command(es, HIWORD(wParam), LOWORD(wParam), (HWND)lParam);
4964 break;
4965
4966 case WM_CONTEXTMENU:
4967 EDIT_WM_ContextMenu(es, (short)LOWORD(lParam), (short)HIWORD(lParam));
4968 break;
4969
4970 case WM_COPY:
4971 EDIT_WM_Copy(es);
4972 break;
4973
4974 case WM_CREATE:
4975 if(unicode)
4976 result = EDIT_WM_Create(es, ((LPCREATESTRUCTW)lParam)->lpszName);
4977 else
4978 {
4979 LPCSTR nameA = ((LPCREATESTRUCTA)lParam)->lpszName;
4980 LPWSTR nameW = NULL;
4981 if(nameA)
4982 {
4983 INT countW = MultiByteToWideChar(CP_ACP, 0, nameA, -1, NULL, 0);
4984 if((nameW = HeapAlloc(GetProcessHeap(), 0, countW * sizeof(WCHAR))))
4985 MultiByteToWideChar(CP_ACP, 0, nameA, -1, nameW, countW);
4986 }
4987 result = EDIT_WM_Create(es, nameW);
4988 HeapFree(GetProcessHeap(), 0, nameW);
4989 }
4990 break;
4991
4992 case WM_CUT:
4993 EDIT_WM_Cut(es);
4994 break;
4995
4996 case WM_ENABLE:
4997 es->bEnableState = (BOOL) wParam;
4998 EDIT_UpdateText(es, NULL, TRUE);
4999 break;
5000
5001 case WM_ERASEBKGND:
5002 /* we do the proper erase in EDIT_WM_Paint */
5003 result = 1;
5004 break;
5005
5006 case WM_GETFONT:
5007 result = (LRESULT)es->font;
5008 break;
5009
5010 case WM_GETTEXT:
5011 result = (LRESULT)EDIT_WM_GetText(es, (INT)wParam, (LPWSTR)lParam, unicode);
5012 break;
5013
5014 case WM_GETTEXTLENGTH:
5015 if (unicode) result = get_text_length(es);
5016 else result = WideCharToMultiByte( CP_ACP, 0, es->text, get_text_length(es),
5017 NULL, 0, NULL, NULL );
5018 break;
5019
5020 case WM_HSCROLL:
5021 result = EDIT_WM_HScroll(es, LOWORD(wParam), (short)HIWORD(wParam));
5022 break;
5023
5024 case WM_KEYDOWN:
5025 result = EDIT_WM_KeyDown(es, (INT)wParam);
5026 break;
5027
5028 case WM_KILLFOCUS:
5029 result = EDIT_WM_KillFocus(es);
5030 break;
5031
5032 case WM_LBUTTONDBLCLK:
5033 result = EDIT_WM_LButtonDblClk(es);
5034 break;
5035
5036 case WM_LBUTTONDOWN:
5037 result = EDIT_WM_LButtonDown(es, wParam, (short)LOWORD(lParam), (short)HIWORD(lParam));
5038 break;
5039
5040 case WM_LBUTTONUP:
5041 result = EDIT_WM_LButtonUp(es);
5042 break;
5043
5044 case WM_MBUTTONDOWN:
5045 result = EDIT_WM_MButtonDown(es);
5046 break;
5047
5048 case WM_MOUSEMOVE:
5049 result = EDIT_WM_MouseMove(es, (short)LOWORD(lParam), (short)HIWORD(lParam));
5050 break;
5051
5052 case WM_PRINTCLIENT:
5053 case WM_PAINT:
5054 EDIT_WM_Paint(es, (HDC)wParam);
5055 break;
5056
5057 case WM_PASTE:
5058 EDIT_WM_Paste(es);
5059 break;
5060
5061 case WM_SETFOCUS:
5062 EDIT_WM_SetFocus(es);
5063 break;
5064
5065 case WM_SETFONT:
5066 EDIT_WM_SetFont(es, (HFONT)wParam, LOWORD(lParam) != 0);
5067 break;
5068
5069 case WM_SETREDRAW:
5070 /* FIXME: actually set an internal flag and behave accordingly */
5071 break;
5072
5073 case WM_SETTEXT:
5074 EDIT_WM_SetText(es, (LPCWSTR)lParam, unicode);
5075 result = TRUE;
5076 break;
5077
5078 case WM_SIZE:
5079 EDIT_WM_Size(es, (UINT)wParam, LOWORD(lParam), HIWORD(lParam));
5080 break;
5081
5082 case WM_STYLECHANGED:
5083 result = EDIT_WM_StyleChanged(es, wParam, (const STYLESTRUCT *)lParam);
5084 break;
5085
5086 case WM_STYLECHANGING:
5087 result = 0; /* See EDIT_WM_StyleChanged */
5088 break;
5089
5090 case WM_SYSKEYDOWN:
5091 result = EDIT_WM_SysKeyDown(es, (INT)wParam, (DWORD)lParam);
5092 break;
5093
5094 case WM_TIMER:
5095 EDIT_WM_Timer(es);
5096 break;
5097
5098 case WM_VSCROLL:
5099 result = EDIT_WM_VScroll(es, LOWORD(wParam), (short)HIWORD(wParam));
5100 break;
5101
5102 case WM_MOUSEWHEEL:
5103 {
5104 int gcWheelDelta = 0;
5105 UINT pulScrollLines = 3;
5106 SystemParametersInfoW(SPI_GETWHEELSCROLLLINES,0, &pulScrollLines, 0);
5107
5108 if (wParam & (MK_SHIFT | MK_CONTROL)) {
5109 result = DefWindowProcW(hwnd, msg, wParam, lParam);
5110 break;
5111 }
5112 gcWheelDelta -= GET_WHEEL_DELTA_WPARAM(wParam);
5113 if (abs(gcWheelDelta) >= WHEEL_DELTA && pulScrollLines)
5114 {
5115 int cLineScroll= (int) min((UINT) es->line_count, pulScrollLines);
5116 cLineScroll *= (gcWheelDelta / WHEEL_DELTA);
5117 result = EDIT_EM_LineScroll(es, 0, cLineScroll);
5118 }
5119 }
5120 break;
5121
5122
5123 /* IME messages to make the edit control IME aware */
5124 case WM_IME_SETCONTEXT:
5125 break;
5126
5127 case WM_IME_STARTCOMPOSITION:
5128 es->composition_start = es->selection_end;
5129 es->composition_len = 0;
5130 break;
5131
5132 case WM_IME_COMPOSITION:
5133 EDIT_ImeComposition(hwnd, lParam, es);
5134 break;
5135
5136 case WM_IME_ENDCOMPOSITION:
5137 if (es->composition_len > 0)
5138 {
5139 EDIT_EM_ReplaceSel(es, TRUE, empty_stringW, TRUE, TRUE);
5140 es->selection_end = es->selection_start;
5141 es->composition_len= 0;
5142 }
5143 break;
5144
5145 case WM_IME_COMPOSITIONFULL:
5146 break;
5147
5148 case WM_IME_SELECT:
5149 break;
5150
5151 case WM_IME_CONTROL:
5152 break;
5153
5154 default:
5155 result = DefWindowProcT(hwnd, msg, wParam, lParam, unicode);
5156 break;
5157 }
5158
5159 if (IsWindow(hwnd) && es) EDIT_UnlockBuffer(es, FALSE);
5160
5161 TRACE("hwnd=%p msg=%x (%s) -- 0x%08lx\n", hwnd, msg, SPY_GetMsgName(msg, hwnd), result);
5162
5163 return result;
5164 }
5165
5166
5167 /*********************************************************************
5168 * edit class descriptor
5169 */
5170 static const WCHAR editW[] = {'E','d','i','t',0};
5171 const struct builtin_class_descr EDIT_builtin_class =
5172 {
5173 editW, /* name */
5174 CS_DBLCLKS | CS_PARENTDC, /* style */
5175 WINPROC_EDIT, /* proc */
5176 #ifdef __i386__
5177 sizeof(EDITSTATE *) + sizeof(WORD), /* extra */
5178 #else
5179 sizeof(EDITSTATE *), /* extra */
5180 #endif
5181 IDC_IBEAM, /* cursor */
5182 0 /* brush */
5183 };
Maarten's multimedia branch