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msxml3: Try IStream if IPersistStream save failed.
[wine/multimedia.git] / dlls / user32 / edit.c
blob81cb6cce5e283227d926b3404d1c2728affd9feb
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 only
272 * allows to 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 * Additional 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
407 if (!udc)
408 udc = GetDC(es->hwndSelf);
409 if (es->font)
410 old_font = SelectObject(udc, es->font);
411
412 tabdef.cTabStops = es->tabs_count;
413 tabdef.iScale = 0;
414 tabdef.pTabStops = es->tabs;
415 tabdef.iTabOrigin = 0;
416
417 ScriptStringAnalyse(udc, &es->text[index], line_def->net_length, (1.5*line_def->net_length+16), -1, SSA_LINK|SSA_FALLBACK|SSA_GLYPHS|SSA_TAB, -1, NULL, NULL, NULL, &tabdef, NULL, &line_def->ssa);
418
419 if (es->font)
420 SelectObject(udc, old_font);
421 if (udc != dc)
422 ReleaseDC(es->hwndSelf, udc);
423 }
424
425 return line_def->ssa;
426 }
427
428 static SCRIPT_STRING_ANALYSIS EDIT_UpdateUniscribeData(EDITSTATE *es, HDC dc, INT line)
429 {
430 LINEDEF *line_def;
431
432 if (!(es->style & ES_MULTILINE))
433 {
434 if (!es->ssa)
435 {
436 INT length = get_text_length(es);
437 HFONT old_font = NULL;
438 HDC udc = dc;
439
440 if (!udc)
441 udc = GetDC(es->hwndSelf);
442 if (es->font)
443 old_font = SelectObject(udc, es->font);
444
445 if (es->style & ES_PASSWORD)
446 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);
447 else
448 ScriptStringAnalyse(udc, es->text, length, (1.5*length+16), -1, SSA_LINK|SSA_FALLBACK|SSA_GLYPHS, -1, NULL, NULL, NULL, NULL, NULL, &es->ssa);
449
450 if (es->font)
451 SelectObject(udc, old_font);
452 if (udc != dc)
453 ReleaseDC(es->hwndSelf, udc);
454 }
455 return es->ssa;
456 }
457 else
458 {
459 line_def = es->first_line_def;
460 while (line_def && line)
461 {
462 line_def = line_def->next;
463 line--;
464 }
465
466 return EDIT_UpdateUniscribeData_linedef(es,dc,line_def);
467 }
468 }
469
470 /*********************************************************************
471 *
472 * EDIT_BuildLineDefs_ML
473 *
474 * Build linked list of text lines.
475 * Lines can end with '\0' (last line), a character (if it is wrapped),
476 * a soft return '\r\r\n' or a hard return '\r\n'
477 *
478 */
479 static void EDIT_BuildLineDefs_ML(EDITSTATE *es, INT istart, INT iend, INT delta, HRGN hrgn)
480 {
481 LPWSTR current_position, cp;
482 INT fw;
483 LINEDEF *current_line;
484 LINEDEF *previous_line;
485 LINEDEF *start_line;
486 INT line_index = 0, nstart_line = 0, nstart_index = 0;
487 INT line_count = es->line_count;
488 INT orig_net_length;
489 RECT rc;
490
491 if (istart == iend && delta == 0)
492 return;
493
494 previous_line = NULL;
495 current_line = es->first_line_def;
496
497 /* Find starting line. istart must lie inside an existing line or
498 * at the end of buffer */
499 do {
500 if (istart < current_line->index + current_line->length ||
501 current_line->ending == END_0)
502 break;
503
504 previous_line = current_line;
505 current_line = current_line->next;
506 line_index++;
507 } while (current_line);
508
509 if (!current_line) /* Error occurred start is not inside previous buffer */
510 {
511 FIXME(" modification occurred outside buffer\n");
512 return;
513 }
514
515 /* Remember start of modifications in order to calculate update region */
516 nstart_line = line_index;
517 nstart_index = current_line->index;
518
519 /* We must start to reformat from the previous line since the modifications
520 * may have caused the line to wrap upwards. */
521 if (!(es->style & ES_AUTOHSCROLL) && line_index > 0)
522 {
523 line_index--;
524 current_line = previous_line;
525 }
526 start_line = current_line;
527
528 fw = es->format_rect.right - es->format_rect.left;
529 current_position = es->text + current_line->index;
530 do {
531 if (current_line != start_line)
532 {
533 if (!current_line || current_line->index + delta > current_position - es->text)
534 {
535 /* The buffer has been expanded, create a new line and
536 insert it into the link list */
537 LINEDEF *new_line = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, sizeof(LINEDEF));
538 new_line->next = previous_line->next;
539 previous_line->next = new_line;
540 current_line = new_line;
541 es->line_count++;
542 }
543 else if (current_line->index + delta < current_position - es->text)
544 {
545 /* The previous line merged with this line so we delete this extra entry */
546 previous_line->next = current_line->next;
547 HeapFree(GetProcessHeap(), 0, current_line);
548 current_line = previous_line->next;
549 es->line_count--;
550 continue;
551 }
552 else /* current_line->index + delta == current_position */
553 {
554 if (current_position - es->text > iend)
555 break; /* We reached end of line modifications */
556 /* else recalculate this line */
557 }
558 }
559
560 current_line->index = current_position - es->text;
561 orig_net_length = current_line->net_length;
562
563 /* Find end of line */
564 cp = current_position;
565 while (*cp) {
566 if (*cp == '\n') break;
567 if ((*cp == '\r') && (*(cp + 1) == '\n'))
568 break;
569 cp++;
570 }
571
572 /* Mark type of line termination */
573 if (!(*cp)) {
574 current_line->ending = END_0;
575 current_line->net_length = strlenW(current_position);
576 } else if ((cp > current_position) && (*(cp - 1) == '\r')) {
577 current_line->ending = END_SOFT;
578 current_line->net_length = cp - current_position - 1;
579 } else if (*cp == '\n') {
580 current_line->ending = END_RICH;
581 current_line->net_length = cp - current_position;
582 } else {
583 current_line->ending = END_HARD;
584 current_line->net_length = cp - current_position;
585 }
586
587 if (current_line->net_length)
588 {
589 const SIZE *sz;
590 EDIT_InvalidateUniscribeData_linedef(current_line);
591 EDIT_UpdateUniscribeData_linedef(es, NULL, current_line);
592 sz = ScriptString_pSize(current_line->ssa);
593 /* Calculate line width */
594 current_line->width = sz->cx;
595 }
596 else current_line->width = 0;
597
598 /* FIXME: check here for lines that are too wide even in AUTOHSCROLL (> 32767 ???) */
599
600 /* Line breaks just look back from the end and find the next break and try that. */
601
602 if (!(es->style & ES_AUTOHSCROLL)) {
603 if (current_line->width > fw && fw > es->char_width) {
604
605 INT prev, next;
606 int w;
607 const SIZE *sz;
608 float d;
609
610 prev = current_line->net_length - 1;
611 w = current_line->net_length;
612 d = (float)current_line->width/(float)fw;
613 if (d > 1.2) d -= 0.2;
614 next = prev/d;
615 if (next >= prev) next = prev-1;
616 do {
617 prev = EDIT_CallWordBreakProc(es, current_position - es->text,
618 next, current_line->net_length, WB_LEFT);
619 current_line->net_length = prev;
620 EDIT_InvalidateUniscribeData_linedef(current_line);
621 EDIT_UpdateUniscribeData_linedef(es, NULL, current_line);
622 sz = ScriptString_pSize(current_line->ssa);
623 if (sz)
624 current_line->width = sz->cx;
625 else
626 prev = 0;
627 next = prev - 1;
628 } while (prev && current_line->width > fw);
629 current_line->net_length = w;
630
631 if (prev == 0) { /* Didn't find a line break so force a break */
632 INT *piDx;
633 const INT *count;
634
635 EDIT_InvalidateUniscribeData_linedef(current_line);
636 EDIT_UpdateUniscribeData_linedef(es, NULL, current_line);
637
638 count = ScriptString_pcOutChars(current_line->ssa);
639 piDx = HeapAlloc(GetProcessHeap(),0,sizeof(INT) * (*count));
640 ScriptStringGetLogicalWidths(current_line->ssa,piDx);
641
642 prev = current_line->net_length-1;
643 do {
644 current_line->width -= piDx[prev];
645 prev--;
646 } while ( prev > 0 && current_line->width > fw);
647 if (prev<=0)
648 prev = 1;
649 HeapFree(GetProcessHeap(),0,piDx);
650 }
651
652 /* If the first line we are calculating, wrapped before istart, we must
653 * adjust istart in order for this to be reflected in the update region. */
654 if (current_line->index == nstart_index && istart > current_line->index + prev)
655 istart = current_line->index + prev;
656 /* else if we are updating the previous line before the first line we
657 * are re-calculating and it expanded */
658 else if (current_line == start_line &&
659 current_line->index != nstart_index && orig_net_length < prev)
660 {
661 /* Line expanded due to an upwards line wrap so we must partially include
662 * previous line in update region */
663 nstart_line = line_index;
664 nstart_index = current_line->index;
665 istart = current_line->index + orig_net_length;
666 }
667
668 current_line->net_length = prev;
669 current_line->ending = END_WRAP;
670
671 if (current_line->net_length > 0)
672 {
673 EDIT_UpdateUniscribeData_linedef(es, NULL, current_line);
674 sz = ScriptString_pSize(current_line->ssa);
675 current_line->width = sz->cx;
676 }
677 else current_line->width = 0;
678 }
679 else if (current_line == start_line &&
680 current_line->index != nstart_index &&
681 orig_net_length < current_line->net_length) {
682 /* The previous line expanded but it's still not as wide as the client rect */
683 /* The expansion is due to an upwards line wrap so we must partially include
684 it in the update region */
685 nstart_line = line_index;
686 nstart_index = current_line->index;
687 istart = current_line->index + orig_net_length;
688 }
689 }
690
691
692 /* Adjust length to include line termination */
693 switch (current_line->ending) {
694 case END_SOFT:
695 current_line->length = current_line->net_length + 3;
696 break;
697 case END_RICH:
698 current_line->length = current_line->net_length + 1;
699 break;
700 case END_HARD:
701 current_line->length = current_line->net_length + 2;
702 break;
703 case END_WRAP:
704 case END_0:
705 current_line->length = current_line->net_length;
706 break;
707 }
708 es->text_width = max(es->text_width, current_line->width);
709 current_position += current_line->length;
710 previous_line = current_line;
711 current_line = current_line->next;
712 line_index++;
713 } while (previous_line->ending != END_0);
714
715 /* Finish adjusting line indexes by delta or remove hanging lines */
716 if (previous_line->ending == END_0)
717 {
718 LINEDEF *pnext = NULL;
719
720 previous_line->next = NULL;
721 while (current_line)
722 {
723 pnext = current_line->next;
724 EDIT_InvalidateUniscribeData_linedef(current_line);
725 HeapFree(GetProcessHeap(), 0, current_line);
726 current_line = pnext;
727 es->line_count--;
728 }
729 }
730 else if (delta != 0)
731 {
732 while (current_line)
733 {
734 current_line->index += delta;
735 current_line = current_line->next;
736 }
737 }
738
739 /* Calculate rest of modification rectangle */
740 if (hrgn)
741 {
742 HRGN tmphrgn;
743 /*
744 * We calculate two rectangles. One for the first line which may have
745 * an indent with respect to the format rect. The other is a format-width
746 * rectangle that spans the rest of the lines that changed or moved.
747 */
748 rc.top = es->format_rect.top + nstart_line * es->line_height -
749 (es->y_offset * es->line_height); /* Adjust for vertical scrollbar */
750 rc.bottom = rc.top + es->line_height;
751 if ((es->style & ES_CENTER) || (es->style & ES_RIGHT))
752 rc.left = es->format_rect.left;
753 else
754 rc.left = LOWORD(EDIT_EM_PosFromChar(es, nstart_index, FALSE));
755 rc.right = es->format_rect.right;
756 SetRectRgn(hrgn, rc.left, rc.top, rc.right, rc.bottom);
757
758 rc.top = rc.bottom;
759 rc.left = es->format_rect.left;
760 rc.right = es->format_rect.right;
761 /*
762 * If lines were added or removed we must re-paint the remainder of the
763 * lines since the remaining lines were either shifted up or down.
764 */
765 if (line_count < es->line_count) /* We added lines */
766 rc.bottom = es->line_count * es->line_height;
767 else if (line_count > es->line_count) /* We removed lines */
768 rc.bottom = line_count * es->line_height;
769 else
770 rc.bottom = line_index * es->line_height;
771 rc.bottom += es->format_rect.top;
772 rc.bottom -= (es->y_offset * es->line_height); /* Adjust for vertical scrollbar */
773 tmphrgn = CreateRectRgn(rc.left, rc.top, rc.right, rc.bottom);
774 CombineRgn(hrgn, hrgn, tmphrgn, RGN_OR);
775 DeleteObject(tmphrgn);
776 }
777 }
778
779 /*********************************************************************
780 *
781 * EDIT_CalcLineWidth_SL
782 *
783 */
784 static void EDIT_CalcLineWidth_SL(EDITSTATE *es)
785 {
786 EDIT_UpdateUniscribeData(es, NULL, 0);
787 if (es->ssa)
788 {
789 const SIZE *size;
790 size = ScriptString_pSize(es->ssa);
791 es->text_width = size->cx;
792 }
793 else
794 es->text_width = 0;
795 }
796
797 /*********************************************************************
798 *
799 * EDIT_CharFromPos
800 *
801 * Beware: This is not the function called on EM_CHARFROMPOS
802 * The position _can_ be outside the formatting / client
803 * rectangle
804 * The return value is only the character index
805 *
806 */
807 static INT EDIT_CharFromPos(EDITSTATE *es, INT x, INT y, LPBOOL after_wrap)
808 {
809 INT index;
810
811 if (es->style & ES_MULTILINE) {
812 int trailing;
813 INT line = (y - es->format_rect.top) / es->line_height + es->y_offset;
814 INT line_index = 0;
815 LINEDEF *line_def = es->first_line_def;
816 EDIT_UpdateUniscribeData(es, NULL, line);
817 while ((line > 0) && line_def->next) {
818 line_index += line_def->length;
819 line_def = line_def->next;
820 line--;
821 }
822
823 x += es->x_offset - es->format_rect.left;
824 if (es->style & ES_RIGHT)
825 x -= (es->format_rect.right - es->format_rect.left) - line_def->width;
826 else if (es->style & ES_CENTER)
827 x -= ((es->format_rect.right - es->format_rect.left) - line_def->width) / 2;
828 if (x >= line_def->width) {
829 if (after_wrap)
830 *after_wrap = (line_def->ending == END_WRAP);
831 return line_index + line_def->net_length;
832 }
833 if (x <= 0 || !line_def->ssa) {
834 if (after_wrap)
835 *after_wrap = FALSE;
836 return line_index;
837 }
838
839 ScriptStringXtoCP(line_def->ssa, x , &index, &trailing);
840 if (trailing) index++;
841 index += line_index;
842 if (after_wrap)
843 *after_wrap = ((index == line_index + line_def->net_length) &&
844 (line_def->ending == END_WRAP));
845 } else {
846 INT xoff = 0;
847 INT trailing;
848 if (after_wrap)
849 *after_wrap = FALSE;
850 x -= es->format_rect.left;
851 if (!x)
852 return es->x_offset;
853
854 if (!es->x_offset)
855 {
856 INT indent = (es->format_rect.right - es->format_rect.left) - es->text_width;
857 if (es->style & ES_RIGHT)
858 x -= indent;
859 else if (es->style & ES_CENTER)
860 x -= indent / 2;
861 }
862
863 EDIT_UpdateUniscribeData(es, NULL, 0);
864 if (es->x_offset)
865 {
866 if (es->ssa)
867 {
868 if (es->x_offset>= get_text_length(es))
869 {
870 const SIZE *size;
871 size = ScriptString_pSize(es->ssa);
872 xoff = size->cx;
873 }
874 ScriptStringCPtoX(es->ssa, es->x_offset, FALSE, &xoff);
875 }
876 else
877 xoff = 0;
878 }
879 if (x < 0)
880 {
881 if (x + xoff > 0 || !es->ssa)
882 {
883 ScriptStringXtoCP(es->ssa, x+xoff, &index, &trailing);
884 if (trailing) index++;
885 }
886 else
887 index = 0;
888 }
889 else
890 {
891 if (x)
892 {
893 const SIZE *size = NULL;
894 if (es->ssa)
895 size = ScriptString_pSize(es->ssa);
896 if (!size)
897 index = 0;
898 else if (x > size->cx)
899 index = get_text_length(es);
900 else if (es->ssa)
901 {
902 ScriptStringXtoCP(es->ssa, x+xoff, &index, &trailing);
903 if (trailing) index++;
904 }
905 else
906 index = 0;
907 }
908 else
909 index = es->x_offset;
910 }
911 }
912 return index;
913 }
914
915
916 /*********************************************************************
917 *
918 * EDIT_ConfinePoint
919 *
920 * adjusts the point to be within the formatting rectangle
921 * (so CharFromPos returns the nearest _visible_ character)
922 *
923 */
924 static void EDIT_ConfinePoint(const EDITSTATE *es, LPINT x, LPINT y)
925 {
926 *x = min(max(*x, es->format_rect.left), es->format_rect.right - 1);
927 *y = min(max(*y, es->format_rect.top), es->format_rect.bottom - 1);
928 }
929
930
931 /*********************************************************************
932 *
933 * EM_LINEFROMCHAR
934 *
935 */
936 static INT EDIT_EM_LineFromChar(EDITSTATE *es, INT index)
937 {
938 INT line;
939 LINEDEF *line_def;
940
941 if (!(es->style & ES_MULTILINE))
942 return 0;
943 if (index > (INT)get_text_length(es))
944 return es->line_count - 1;
945 if (index == -1)
946 index = min(es->selection_start, es->selection_end);
947
948 line = 0;
949 line_def = es->first_line_def;
950 index -= line_def->length;
951 while ((index >= 0) && line_def->next) {
952 line++;
953 line_def = line_def->next;
954 index -= line_def->length;
955 }
956 return line;
957 }
958
959
960 /*********************************************************************
961 *
962 * EM_LINEINDEX
963 *
964 */
965 static INT EDIT_EM_LineIndex(const EDITSTATE *es, INT line)
966 {
967 INT line_index;
968 const LINEDEF *line_def;
969
970 if (!(es->style & ES_MULTILINE))
971 return 0;
972 if (line >= es->line_count)
973 return -1;
974
975 line_index = 0;
976 line_def = es->first_line_def;
977 if (line == -1) {
978 INT index = es->selection_end - line_def->length;
979 while ((index >= 0) && line_def->next) {
980 line_index += line_def->length;
981 line_def = line_def->next;
982 index -= line_def->length;
983 }
984 } else {
985 while (line > 0) {
986 line_index += line_def->length;
987 line_def = line_def->next;
988 line--;
989 }
990 }
991 return line_index;
992 }
993
994
995 /*********************************************************************
996 *
997 * EM_LINELENGTH
998 *
999 */
1000 static INT EDIT_EM_LineLength(EDITSTATE *es, INT index)
1001 {
1002 LINEDEF *line_def;
1003
1004 if (!(es->style & ES_MULTILINE))
1005 return get_text_length(es);
1006
1007 if (index == -1) {
1008 /* get the number of remaining non-selected chars of selected lines */
1009 INT32 l; /* line number */
1010 INT32 li; /* index of first char in line */
1011 INT32 count;
1012 l = EDIT_EM_LineFromChar(es, es->selection_start);
1013 /* # chars before start of selection area */
1014 count = es->selection_start - EDIT_EM_LineIndex(es, l);
1015 l = EDIT_EM_LineFromChar(es, es->selection_end);
1016 /* # chars after end of selection */
1017 li = EDIT_EM_LineIndex(es, l);
1018 count += li + EDIT_EM_LineLength(es, li) - es->selection_end;
1019 return count;
1020 }
1021 line_def = es->first_line_def;
1022 index -= line_def->length;
1023 while ((index >= 0) && line_def->next) {
1024 line_def = line_def->next;
1025 index -= line_def->length;
1026 }
1027 return line_def->net_length;
1028 }
1029
1030
1031 /*********************************************************************
1032 *
1033 * EM_POSFROMCHAR
1034 *
1035 */
1036 static LRESULT EDIT_EM_PosFromChar(EDITSTATE *es, INT index, BOOL after_wrap)
1037 {
1038 INT len = get_text_length(es);
1039 INT l;
1040 INT li;
1041 INT x = 0;
1042 INT y = 0;
1043 INT w;
1044 INT lw = 0;
1045 LINEDEF *line_def;
1046
1047 index = min(index, len);
1048 if (es->style & ES_MULTILINE) {
1049 l = EDIT_EM_LineFromChar(es, index);
1050 EDIT_UpdateUniscribeData(es, NULL, l);
1051
1052 y = (l - es->y_offset) * es->line_height;
1053 li = EDIT_EM_LineIndex(es, l);
1054 if (after_wrap && (li == index) && l) {
1055 INT l2 = l - 1;
1056 line_def = es->first_line_def;
1057 while (l2) {
1058 line_def = line_def->next;
1059 l2--;
1060 }
1061 if (line_def->ending == END_WRAP) {
1062 l--;
1063 y -= es->line_height;
1064 li = EDIT_EM_LineIndex(es, l);
1065 }
1066 }
1067
1068 line_def = es->first_line_def;
1069 while (line_def->index != li)
1070 line_def = line_def->next;
1071
1072 lw = line_def->width;
1073 w = es->format_rect.right - es->format_rect.left;
1074 if (line_def->ssa)
1075 {
1076 ScriptStringCPtoX(line_def->ssa, (index - 1) - li, TRUE, &x);
1077 x -= es->x_offset;
1078 }
1079 else
1080 x = es->x_offset;
1081
1082 if (es->style & ES_RIGHT)
1083 x = w - (lw - x);
1084 else if (es->style & ES_CENTER)
1085 x += (w - lw) / 2;
1086 } else {
1087 INT xoff = 0;
1088 INT xi = 0;
1089 EDIT_UpdateUniscribeData(es, NULL, 0);
1090 if (es->x_offset)
1091 {
1092 if (es->ssa)
1093 {
1094 if (es->x_offset >= get_text_length(es))
1095 {
1096 int leftover = es->x_offset - get_text_length(es);
1097 if (es->ssa)
1098 {
1099 const SIZE *size;
1100 size = ScriptString_pSize(es->ssa);
1101 xoff = size->cx;
1102 }
1103 else
1104 xoff = 0;
1105 xoff += es->char_width * leftover;
1106 }
1107 else
1108 ScriptStringCPtoX(es->ssa, es->x_offset, FALSE, &xoff);
1109 }
1110 else
1111 xoff = 0;
1112 }
1113 if (index)
1114 {
1115 if (index >= get_text_length(es))
1116 {
1117 if (es->ssa)
1118 {
1119 const SIZE *size;
1120 size = ScriptString_pSize(es->ssa);
1121 xi = size->cx;
1122 }
1123 else
1124 xi = 0;
1125 }
1126 else if (es->ssa)
1127 ScriptStringCPtoX(es->ssa, index, FALSE, &xi);
1128 else
1129 xi = 0;
1130 }
1131 x = xi - xoff;
1132
1133 if (index >= es->x_offset) {
1134 if (!es->x_offset && (es->style & (ES_RIGHT | ES_CENTER)))
1135 {
1136 w = es->format_rect.right - es->format_rect.left;
1137 if (w > es->text_width)
1138 {
1139 if (es->style & ES_RIGHT)
1140 x += w - es->text_width;
1141 else if (es->style & ES_CENTER)
1142 x += (w - es->text_width) / 2;
1143 }
1144 }
1145 }
1146 y = 0;
1147 }
1148 x += es->format_rect.left;
1149 y += es->format_rect.top;
1150 return MAKELONG((INT16)x, (INT16)y);
1151 }
1152
1153
1154 /*********************************************************************
1155 *
1156 * EDIT_GetLineRect
1157 *
1158 * Calculates the bounding rectangle for a line from a starting
1159 * column to an ending column.
1160 *
1161 */
1162 static void EDIT_GetLineRect(EDITSTATE *es, INT line, INT scol, INT ecol, LPRECT rc)
1163 {
1164 SCRIPT_STRING_ANALYSIS ssa;
1165 INT line_index = 0;
1166 INT pt1, pt2, pt3;
1167
1168 if (es->style & ES_MULTILINE)
1169 {
1170 const LINEDEF *line_def = NULL;
1171 rc->top = es->format_rect.top + (line - es->y_offset) * es->line_height;
1172 if (line >= es->line_count)
1173 return;
1174
1175 line_def = es->first_line_def;
1176 if (line == -1) {
1177 INT index = es->selection_end - line_def->length;
1178 while ((index >= 0) && line_def->next) {
1179 line_index += line_def->length;
1180 line_def = line_def->next;
1181 index -= line_def->length;
1182 }
1183 } else {
1184 while (line > 0) {
1185 line_index += line_def->length;
1186 line_def = line_def->next;
1187 line--;
1188 }
1189 }
1190 ssa = line_def->ssa;
1191 }
1192 else
1193 {
1194 line_index = 0;
1195 rc->top = es->format_rect.top;
1196 ssa = es->ssa;
1197 }
1198
1199 rc->bottom = rc->top + es->line_height;
1200 pt1 = (scol == 0) ? es->format_rect.left : (short)LOWORD(EDIT_EM_PosFromChar(es, line_index + scol, TRUE));
1201 pt2 = (ecol == -1) ? es->format_rect.right : (short)LOWORD(EDIT_EM_PosFromChar(es, line_index + ecol, TRUE));
1202 if (ssa)
1203 {
1204 ScriptStringCPtoX(ssa, scol, FALSE, &pt3);
1205 pt3+=es->format_rect.left;
1206 }
1207 else pt3 = pt1;
1208 rc->right = max(max(pt1 , pt2),pt3);
1209 rc->left = min(min(pt1, pt2),pt3);
1210 }
1211
1212
1213 static inline void text_buffer_changed(EDITSTATE *es)
1214 {
1215 es->text_length = (UINT)-1;
1216
1217 HeapFree( GetProcessHeap(), 0, es->logAttr );
1218 es->logAttr = NULL;
1219 EDIT_InvalidateUniscribeData(es);
1220 }
1221
1222 /*********************************************************************
1223 * EDIT_LockBuffer
1224 *
1225 */
1226 static void EDIT_LockBuffer(EDITSTATE *es)
1227 {
1228 if (!es->text) {
1229
1230 if(!es->hloc32W) return;
1231
1232 if(es->hloc32A)
1233 {
1234 CHAR *textA = LocalLock(es->hloc32A);
1235 HLOCAL hloc32W_new;
1236 UINT countW_new = MultiByteToWideChar(CP_ACP, 0, textA, -1, NULL, 0);
1237 if(countW_new > es->buffer_size + 1)
1238 {
1239 UINT alloc_size = ROUND_TO_GROW(countW_new * sizeof(WCHAR));
1240 TRACE("Resizing 32-bit UNICODE buffer from %d+1 to %d WCHARs\n", es->buffer_size, countW_new);
1241 hloc32W_new = LocalReAlloc(es->hloc32W, alloc_size, LMEM_MOVEABLE | LMEM_ZEROINIT);
1242 if(hloc32W_new)
1243 {
1244 es->hloc32W = hloc32W_new;
1245 es->buffer_size = LocalSize(hloc32W_new)/sizeof(WCHAR) - 1;
1246 TRACE("Real new size %d+1 WCHARs\n", es->buffer_size);
1247 }
1248 else
1249 WARN("FAILED! Will synchronize partially\n");
1250 }
1251 es->text = LocalLock(es->hloc32W);
1252 MultiByteToWideChar(CP_ACP, 0, textA, -1, es->text, es->buffer_size + 1);
1253 LocalUnlock(es->hloc32A);
1254 }
1255 else es->text = LocalLock(es->hloc32W);
1256 }
1257 if(es->flags & EF_APP_HAS_HANDLE) text_buffer_changed(es);
1258 es->lock_count++;
1259 }
1260
1261
1262 /*********************************************************************
1263 *
1264 * EDIT_UnlockBuffer
1265 *
1266 */
1267 static void EDIT_UnlockBuffer(EDITSTATE *es, BOOL force)
1268 {
1269
1270 /* Edit window might be already destroyed */
1271 if(!IsWindow(es->hwndSelf))
1272 {
1273 WARN("edit hwnd %p already destroyed\n", es->hwndSelf);
1274 return;
1275 }
1276
1277 if (!es->lock_count) {
1278 ERR("lock_count == 0 ... please report\n");
1279 return;
1280 }
1281 if (!es->text) {
1282 ERR("es->text == 0 ... please report\n");
1283 return;
1284 }
1285
1286 if (force || (es->lock_count == 1)) {
1287 if (es->hloc32W) {
1288 UINT countA = 0;
1289 UINT countW = get_text_length(es) + 1;
1290
1291 if(es->hloc32A)
1292 {
1293 UINT countA_new = WideCharToMultiByte(CP_ACP, 0, es->text, countW, NULL, 0, NULL, NULL);
1294 TRACE("Synchronizing with 32-bit ANSI buffer\n");
1295 TRACE("%d WCHARs translated to %d bytes\n", countW, countA_new);
1296 countA = LocalSize(es->hloc32A);
1297 if(countA_new > countA)
1298 {
1299 HLOCAL hloc32A_new;
1300 UINT alloc_size = ROUND_TO_GROW(countA_new);
1301 TRACE("Resizing 32-bit ANSI buffer from %d to %d bytes\n", countA, alloc_size);
1302 hloc32A_new = LocalReAlloc(es->hloc32A, alloc_size, LMEM_MOVEABLE | LMEM_ZEROINIT);
1303 if(hloc32A_new)
1304 {
1305 es->hloc32A = hloc32A_new;
1306 countA = LocalSize(hloc32A_new);
1307 TRACE("Real new size %d bytes\n", countA);
1308 }
1309 else
1310 WARN("FAILED! Will synchronize partially\n");
1311 }
1312 WideCharToMultiByte(CP_ACP, 0, es->text, countW,
1313 LocalLock(es->hloc32A), countA, NULL, NULL);
1314 LocalUnlock(es->hloc32A);
1315 }
1316
1317 LocalUnlock(es->hloc32W);
1318 es->text = NULL;
1319 }
1320 else {
1321 ERR("no buffer ... please report\n");
1322 return;
1323 }
1324 }
1325 es->lock_count--;
1326 }
1327
1328
1329 /*********************************************************************
1330 *
1331 * EDIT_MakeFit
1332 *
1333 * Try to fit size + 1 characters in the buffer.
1334 */
1335 static BOOL EDIT_MakeFit(EDITSTATE *es, UINT size)
1336 {
1337 HLOCAL hNew32W;
1338
1339 if (size <= es->buffer_size)
1340 return TRUE;
1341
1342 TRACE("trying to ReAlloc to %d+1 characters\n", size);
1343
1344 /* Force edit to unlock it's buffer. es->text now NULL */
1345 EDIT_UnlockBuffer(es, TRUE);
1346
1347 if (es->hloc32W) {
1348 UINT alloc_size = ROUND_TO_GROW((size + 1) * sizeof(WCHAR));
1349 if ((hNew32W = LocalReAlloc(es->hloc32W, alloc_size, LMEM_MOVEABLE | LMEM_ZEROINIT))) {
1350 TRACE("Old 32 bit handle %p, new handle %p\n", es->hloc32W, hNew32W);
1351 es->hloc32W = hNew32W;
1352 es->buffer_size = LocalSize(hNew32W)/sizeof(WCHAR) - 1;
1353 }
1354 }
1355
1356 EDIT_LockBuffer(es);
1357
1358 if (es->buffer_size < size) {
1359 WARN("FAILED ! We now have %d+1\n", es->buffer_size);
1360 EDIT_NOTIFY_PARENT(es, EN_ERRSPACE);
1361 return FALSE;
1362 } else {
1363 TRACE("We now have %d+1\n", es->buffer_size);
1364 return TRUE;
1365 }
1366 }
1367
1368
1369 /*********************************************************************
1370 *
1371 * EDIT_MakeUndoFit
1372 *
1373 * Try to fit size + 1 bytes in the undo buffer.
1374 *
1375 */
1376 static BOOL EDIT_MakeUndoFit(EDITSTATE *es, UINT size)
1377 {
1378 UINT alloc_size;
1379
1380 if (size <= es->undo_buffer_size)
1381 return TRUE;
1382
1383 TRACE("trying to ReAlloc to %d+1\n", size);
1384
1385 alloc_size = ROUND_TO_GROW((size + 1) * sizeof(WCHAR));
1386 if ((es->undo_text = HeapReAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, es->undo_text, alloc_size))) {
1387 es->undo_buffer_size = alloc_size/sizeof(WCHAR) - 1;
1388 return TRUE;
1389 }
1390 else
1391 {
1392 WARN("FAILED ! We now have %d+1\n", es->undo_buffer_size);
1393 return FALSE;
1394 }
1395 }
1396
1397
1398 /*********************************************************************
1399 *
1400 * EDIT_UpdateTextRegion
1401 *
1402 */
1403 static void EDIT_UpdateTextRegion(EDITSTATE *es, HRGN hrgn, BOOL bErase)
1404 {
1405 if (es->flags & EF_UPDATE) {
1406 es->flags &= ~EF_UPDATE;
1407 EDIT_NOTIFY_PARENT(es, EN_UPDATE);
1408 }
1409 InvalidateRgn(es->hwndSelf, hrgn, bErase);
1410 }
1411
1412
1413 /*********************************************************************
1414 *
1415 * EDIT_UpdateText
1416 *
1417 */
1418 static void EDIT_UpdateText(EDITSTATE *es, const RECT *rc, BOOL bErase)
1419 {
1420 if (es->flags & EF_UPDATE) {
1421 es->flags &= ~EF_UPDATE;
1422 EDIT_NOTIFY_PARENT(es, EN_UPDATE);
1423 }
1424 InvalidateRect(es->hwndSelf, rc, bErase);
1425 }
1426
1427 /*********************************************************************
1428 *
1429 * EDIT_SL_InvalidateText
1430 *
1431 * Called from EDIT_InvalidateText().
1432 * Does the job for single-line controls only.
1433 *
1434 */
1435 static void EDIT_SL_InvalidateText(EDITSTATE *es, INT start, INT end)
1436 {
1437 RECT line_rect;
1438 RECT rc;
1439
1440 EDIT_GetLineRect(es, 0, start, end, &line_rect);
1441 if (IntersectRect(&rc, &line_rect, &es->format_rect))
1442 EDIT_UpdateText(es, &rc, TRUE);
1443 }
1444
1445
1446 static inline INT get_vertical_line_count(EDITSTATE *es)
1447 {
1448 INT vlc = (es->format_rect.bottom - es->format_rect.top) / es->line_height;
1449 return max(1,vlc);
1450 }
1451
1452 /*********************************************************************
1453 *
1454 * EDIT_ML_InvalidateText
1455 *
1456 * Called from EDIT_InvalidateText().
1457 * Does the job for multi-line controls only.
1458 *
1459 */
1460 static void EDIT_ML_InvalidateText(EDITSTATE *es, INT start, INT end)
1461 {
1462 INT vlc = get_vertical_line_count(es);
1463 INT sl = EDIT_EM_LineFromChar(es, start);
1464 INT el = EDIT_EM_LineFromChar(es, end);
1465 INT sc;
1466 INT ec;
1467 RECT rc1;
1468 RECT rcWnd;
1469 RECT rcLine;
1470 RECT rcUpdate;
1471 INT l;
1472
1473 if ((el < es->y_offset) || (sl > es->y_offset + vlc))
1474 return;
1475
1476 sc = start - EDIT_EM_LineIndex(es, sl);
1477 ec = end - EDIT_EM_LineIndex(es, el);
1478 if (sl < es->y_offset) {
1479 sl = es->y_offset;
1480 sc = 0;
1481 }
1482 if (el > es->y_offset + vlc) {
1483 el = es->y_offset + vlc;
1484 ec = EDIT_EM_LineLength(es, EDIT_EM_LineIndex(es, el));
1485 }
1486 GetClientRect(es->hwndSelf, &rc1);
1487 IntersectRect(&rcWnd, &rc1, &es->format_rect);
1488 if (sl == el) {
1489 EDIT_GetLineRect(es, sl, sc, ec, &rcLine);
1490 if (IntersectRect(&rcUpdate, &rcWnd, &rcLine))
1491 EDIT_UpdateText(es, &rcUpdate, TRUE);
1492 } else {
1493 EDIT_GetLineRect(es, sl, sc,
1494 EDIT_EM_LineLength(es,
1495 EDIT_EM_LineIndex(es, sl)),
1496 &rcLine);
1497 if (IntersectRect(&rcUpdate, &rcWnd, &rcLine))
1498 EDIT_UpdateText(es, &rcUpdate, TRUE);
1499 for (l = sl + 1 ; l < el ; l++) {
1500 EDIT_GetLineRect(es, l, 0,
1501 EDIT_EM_LineLength(es,
1502 EDIT_EM_LineIndex(es, l)),
1503 &rcLine);
1504 if (IntersectRect(&rcUpdate, &rcWnd, &rcLine))
1505 EDIT_UpdateText(es, &rcUpdate, TRUE);
1506 }
1507 EDIT_GetLineRect(es, el, 0, ec, &rcLine);
1508 if (IntersectRect(&rcUpdate, &rcWnd, &rcLine))
1509 EDIT_UpdateText(es, &rcUpdate, TRUE);
1510 }
1511 }
1512
1513
1514 /*********************************************************************
1515 *
1516 * EDIT_InvalidateText
1517 *
1518 * Invalidate the text from offset start up to, but not including,
1519 * offset end. Useful for (re)painting the selection.
1520 * Regions outside the linewidth are not invalidated.
1521 * end == -1 means end == TextLength.
1522 * start and end need not be ordered.
1523 *
1524 */
1525 static void EDIT_InvalidateText(EDITSTATE *es, INT start, INT end)
1526 {
1527 if (end == start)
1528 return;
1529
1530 if (end == -1)
1531 end = get_text_length(es);
1532
1533 if (end < start) {
1534 INT tmp = start;
1535 start = end;
1536 end = tmp;
1537 }
1538
1539 if (es->style & ES_MULTILINE)
1540 EDIT_ML_InvalidateText(es, start, end);
1541 else
1542 EDIT_SL_InvalidateText(es, start, end);
1543 }
1544
1545
1546 /*********************************************************************
1547 *
1548 * EDIT_EM_SetSel
1549 *
1550 * note: unlike the specs say: the order of start and end
1551 * _is_ preserved in Windows. (i.e. start can be > end)
1552 * In other words: this handler is OK
1553 *
1554 */
1555 static void EDIT_EM_SetSel(EDITSTATE *es, UINT start, UINT end, BOOL after_wrap)
1556 {
1557 UINT old_start = es->selection_start;
1558 UINT old_end = es->selection_end;
1559 UINT len = get_text_length(es);
1560
1561 if (start == (UINT)-1) {
1562 start = es->selection_end;
1563 end = es->selection_end;
1564 } else {
1565 start = min(start, len);
1566 end = min(end, len);
1567 }
1568 es->selection_start = start;
1569 es->selection_end = end;
1570 if (after_wrap)
1571 es->flags |= EF_AFTER_WRAP;
1572 else
1573 es->flags &= ~EF_AFTER_WRAP;
1574 /* Compute the necessary invalidation region. */
1575 /* Note that we don't need to invalidate regions which have
1576 * "never" been selected, or those which are "still" selected.
1577 * In fact, every time we hit a selection boundary, we can
1578 * *toggle* whether we need to invalidate. Thus we can optimize by
1579 * *sorting* the interval endpoints. Let's assume that we sort them
1580 * in this order:
1581 * start <= end <= old_start <= old_end
1582 * Knuth 5.3.1 (p 183) assures us that this can be done optimally
1583 * in 5 comparisons; i.e. it is impossible to do better than the
1584 * following: */
1585 ORDER_UINT(end, old_end);
1586 ORDER_UINT(start, old_start);
1587 ORDER_UINT(old_start, old_end);
1588 ORDER_UINT(start, end);
1589 /* Note that at this point 'end' and 'old_start' are not in order, but
1590 * start is definitely the min. and old_end is definitely the max. */
1591 if (end != old_start)
1592 {
1593 /*
1594 * One can also do
1595 * ORDER_UINT32(end, old_start);
1596 * EDIT_InvalidateText(es, start, end);
1597 * EDIT_InvalidateText(es, old_start, old_end);
1598 * in place of the following if statement.
1599 * (That would complete the optimal five-comparison four-element sort.)
1600 */
1601 if (old_start > end )
1602 {
1603 EDIT_InvalidateText(es, start, end);
1604 EDIT_InvalidateText(es, old_start, old_end);
1605 }
1606 else
1607 {
1608 EDIT_InvalidateText(es, start, old_start);
1609 EDIT_InvalidateText(es, end, old_end);
1610 }
1611 }
1612 else EDIT_InvalidateText(es, start, old_end);
1613 }
1614
1615
1616 /*********************************************************************
1617 *
1618 * EDIT_UpdateScrollInfo
1619 *
1620 */
1621 static void EDIT_UpdateScrollInfo(EDITSTATE *es)
1622 {
1623 if ((es->style & WS_VSCROLL) && !(es->flags & EF_VSCROLL_TRACK))
1624 {
1625 SCROLLINFO si;
1626 si.cbSize = sizeof(SCROLLINFO);
1627 si.fMask = SIF_PAGE | SIF_POS | SIF_RANGE | SIF_DISABLENOSCROLL;
1628 si.nMin = 0;
1629 si.nMax = es->line_count - 1;
1630 si.nPage = (es->format_rect.bottom - es->format_rect.top) / es->line_height;
1631 si.nPos = es->y_offset;
1632 TRACE("SB_VERT, nMin=%d, nMax=%d, nPage=%d, nPos=%d\n",
1633 si.nMin, si.nMax, si.nPage, si.nPos);
1634 SetScrollInfo(es->hwndSelf, SB_VERT, &si, TRUE);
1635 }
1636
1637 if ((es->style & WS_HSCROLL) && !(es->flags & EF_HSCROLL_TRACK))
1638 {
1639 SCROLLINFO si;
1640 si.cbSize = sizeof(SCROLLINFO);
1641 si.fMask = SIF_PAGE | SIF_POS | SIF_RANGE | SIF_DISABLENOSCROLL;
1642 si.nMin = 0;
1643 si.nMax = es->text_width - 1;
1644 si.nPage = es->format_rect.right - es->format_rect.left;
1645 si.nPos = es->x_offset;
1646 TRACE("SB_HORZ, nMin=%d, nMax=%d, nPage=%d, nPos=%d\n",
1647 si.nMin, si.nMax, si.nPage, si.nPos);
1648 SetScrollInfo(es->hwndSelf, SB_HORZ, &si, TRUE);
1649 }
1650 }
1651
1652
1653 /*********************************************************************
1654 *
1655 * EDIT_EM_LineScroll_internal
1656 *
1657 * Version of EDIT_EM_LineScroll for internal use.
1658 * It doesn't refuse if ES_MULTILINE is set and assumes that
1659 * dx is in pixels, dy - in lines.
1660 *
1661 */
1662 static BOOL EDIT_EM_LineScroll_internal(EDITSTATE *es, INT dx, INT dy)
1663 {
1664 INT nyoff;
1665 INT x_offset_in_pixels;
1666 INT lines_per_page = (es->format_rect.bottom - es->format_rect.top) /
1667 es->line_height;
1668
1669 if (es->style & ES_MULTILINE)
1670 {
1671 x_offset_in_pixels = es->x_offset;
1672 }
1673 else
1674 {
1675 dy = 0;
1676 x_offset_in_pixels = (short)LOWORD(EDIT_EM_PosFromChar(es, es->x_offset, FALSE));
1677 }
1678
1679 if (-dx > x_offset_in_pixels)
1680 dx = -x_offset_in_pixels;
1681 if (dx > es->text_width - x_offset_in_pixels)
1682 dx = es->text_width - x_offset_in_pixels;
1683 nyoff = max(0, es->y_offset + dy);
1684 if (nyoff >= es->line_count - lines_per_page)
1685 nyoff = max(0, es->line_count - lines_per_page);
1686 dy = (es->y_offset - nyoff) * es->line_height;
1687 if (dx || dy) {
1688 RECT rc1;
1689 RECT rc;
1690
1691 es->y_offset = nyoff;
1692 if(es->style & ES_MULTILINE)
1693 es->x_offset += dx;
1694 else
1695 es->x_offset += dx / es->char_width;
1696
1697 GetClientRect(es->hwndSelf, &rc1);
1698 IntersectRect(&rc, &rc1, &es->format_rect);
1699 ScrollWindowEx(es->hwndSelf, -dx, dy,
1700 NULL, &rc, NULL, NULL, SW_INVALIDATE);
1701 /* force scroll info update */
1702 EDIT_UpdateScrollInfo(es);
1703 }
1704 if (dx && !(es->flags & EF_HSCROLL_TRACK))
1705 EDIT_NOTIFY_PARENT(es, EN_HSCROLL);
1706 if (dy && !(es->flags & EF_VSCROLL_TRACK))
1707 EDIT_NOTIFY_PARENT(es, EN_VSCROLL);
1708 return TRUE;
1709 }
1710
1711 /*********************************************************************
1712 *
1713 * EM_LINESCROLL
1714 *
1715 * NOTE: dx is in average character widths, dy - in lines;
1716 *
1717 */
1718 static BOOL EDIT_EM_LineScroll(EDITSTATE *es, INT dx, INT dy)
1719 {
1720 if (!(es->style & ES_MULTILINE))
1721 return FALSE;
1722
1723 dx *= es->char_width;
1724 return EDIT_EM_LineScroll_internal(es, dx, dy);
1725 }
1726
1727
1728 /*********************************************************************
1729 *
1730 * EM_SCROLL
1731 *
1732 */
1733 static LRESULT EDIT_EM_Scroll(EDITSTATE *es, INT action)
1734 {
1735 INT dy;
1736
1737 if (!(es->style & ES_MULTILINE))
1738 return (LRESULT)FALSE;
1739
1740 dy = 0;
1741
1742 switch (action) {
1743 case SB_LINEUP:
1744 if (es->y_offset)
1745 dy = -1;
1746 break;
1747 case SB_LINEDOWN:
1748 if (es->y_offset < es->line_count - 1)
1749 dy = 1;
1750 break;
1751 case SB_PAGEUP:
1752 if (es->y_offset)
1753 dy = -(es->format_rect.bottom - es->format_rect.top) / es->line_height;
1754 break;
1755 case SB_PAGEDOWN:
1756 if (es->y_offset < es->line_count - 1)
1757 dy = (es->format_rect.bottom - es->format_rect.top) / es->line_height;
1758 break;
1759 default:
1760 return (LRESULT)FALSE;
1761 }
1762 if (dy) {
1763 INT vlc = get_vertical_line_count(es);
1764 /* check if we are going to move too far */
1765 if(es->y_offset + dy > es->line_count - vlc)
1766 dy = max(es->line_count - vlc, 0) - es->y_offset;
1767
1768 /* Notification is done in EDIT_EM_LineScroll */
1769 if(dy) {
1770 EDIT_EM_LineScroll(es, 0, dy);
1771 return MAKELONG(dy, TRUE);
1772 }
1773
1774 }
1775 return (LRESULT)FALSE;
1776 }
1777
1778
1779 /*********************************************************************
1780 *
1781 * EDIT_SetCaretPos
1782 *
1783 */
1784 static void EDIT_SetCaretPos(EDITSTATE *es, INT pos,
1785 BOOL after_wrap)
1786 {
1787 LRESULT res = EDIT_EM_PosFromChar(es, pos, after_wrap);
1788 TRACE("%d - %dx%d\n", pos, (short)LOWORD(res), (short)HIWORD(res));
1789 SetCaretPos((short)LOWORD(res), (short)HIWORD(res));
1790 }
1791
1792
1793 /*********************************************************************
1794 *
1795 * EM_SCROLLCARET
1796 *
1797 */
1798 static void EDIT_EM_ScrollCaret(EDITSTATE *es)
1799 {
1800 if (es->style & ES_MULTILINE) {
1801 INT l;
1802 INT vlc;
1803 INT ww;
1804 INT cw = es->char_width;
1805 INT x;
1806 INT dy = 0;
1807 INT dx = 0;
1808
1809 l = EDIT_EM_LineFromChar(es, es->selection_end);
1810 x = (short)LOWORD(EDIT_EM_PosFromChar(es, es->selection_end, es->flags & EF_AFTER_WRAP));
1811 vlc = get_vertical_line_count(es);
1812 if (l >= es->y_offset + vlc)
1813 dy = l - vlc + 1 - es->y_offset;
1814 if (l < es->y_offset)
1815 dy = l - es->y_offset;
1816 ww = es->format_rect.right - es->format_rect.left;
1817 if (x < es->format_rect.left)
1818 dx = x - es->format_rect.left - ww / HSCROLL_FRACTION / cw * cw;
1819 if (x > es->format_rect.right)
1820 dx = x - es->format_rect.left - (HSCROLL_FRACTION - 1) * ww / HSCROLL_FRACTION / cw * cw;
1821 if (dy || dx || (es->y_offset && (es->line_count - es->y_offset < vlc)))
1822 {
1823 /* check if we are going to move too far */
1824 if(es->x_offset + dx + ww > es->text_width)
1825 dx = es->text_width - ww - es->x_offset;
1826 if(dx || dy || (es->y_offset && (es->line_count - es->y_offset < vlc)))
1827 EDIT_EM_LineScroll_internal(es, dx, dy);
1828 }
1829 } else {
1830 INT x;
1831 INT goal;
1832 INT format_width;
1833
1834 x = (short)LOWORD(EDIT_EM_PosFromChar(es, es->selection_end, FALSE));
1835 format_width = es->format_rect.right - es->format_rect.left;
1836 if (x < es->format_rect.left) {
1837 goal = es->format_rect.left + format_width / HSCROLL_FRACTION;
1838 do {
1839 es->x_offset--;
1840 x = (short)LOWORD(EDIT_EM_PosFromChar(es, es->selection_end, FALSE));
1841 } while ((x < goal) && es->x_offset);
1842 /* FIXME: use ScrollWindow() somehow to improve performance */
1843 EDIT_UpdateText(es, NULL, TRUE);
1844 } else if (x > es->format_rect.right) {
1845 INT x_last;
1846 INT len = get_text_length(es);
1847 goal = es->format_rect.right - format_width / HSCROLL_FRACTION;
1848 do {
1849 es->x_offset++;
1850 x = (short)LOWORD(EDIT_EM_PosFromChar(es, es->selection_end, FALSE));
1851 x_last = (short)LOWORD(EDIT_EM_PosFromChar(es, len, FALSE));
1852 } while ((x > goal) && (x_last > es->format_rect.right));
1853 /* FIXME: use ScrollWindow() somehow to improve performance */
1854 EDIT_UpdateText(es, NULL, TRUE);
1855 }
1856 }
1857
1858 if(es->flags & EF_FOCUSED)
1859 EDIT_SetCaretPos(es, es->selection_end, es->flags & EF_AFTER_WRAP);
1860 }
1861
1862
1863 /*********************************************************************
1864 *
1865 * EDIT_MoveBackward
1866 *
1867 */
1868 static void EDIT_MoveBackward(EDITSTATE *es, BOOL extend)
1869 {
1870 INT e = es->selection_end;
1871
1872 if (e) {
1873 e--;
1874 if ((es->style & ES_MULTILINE) && e &&
1875 (es->text[e - 1] == '\r') && (es->text[e] == '\n')) {
1876 e--;
1877 if (e && (es->text[e - 1] == '\r'))
1878 e--;
1879 }
1880 }
1881 EDIT_EM_SetSel(es, extend ? es->selection_start : e, e, FALSE);
1882 EDIT_EM_ScrollCaret(es);
1883 }
1884
1885
1886 /*********************************************************************
1887 *
1888 * EDIT_MoveDown_ML
1889 *
1890 * Only for multi line controls
1891 * Move the caret one line down, on a column with the nearest
1892 * x coordinate on the screen (might be a different column).
1893 *
1894 */
1895 static void EDIT_MoveDown_ML(EDITSTATE *es, BOOL extend)
1896 {
1897 INT s = es->selection_start;
1898 INT e = es->selection_end;
1899 BOOL after_wrap = (es->flags & EF_AFTER_WRAP);
1900 LRESULT pos = EDIT_EM_PosFromChar(es, e, after_wrap);
1901 INT x = (short)LOWORD(pos);
1902 INT y = (short)HIWORD(pos);
1903
1904 e = EDIT_CharFromPos(es, x, y + es->line_height, &after_wrap);
1905 if (!extend)
1906 s = e;
1907 EDIT_EM_SetSel(es, s, e, after_wrap);
1908 EDIT_EM_ScrollCaret(es);
1909 }
1910
1911
1912 /*********************************************************************
1913 *
1914 * EDIT_MoveEnd
1915 *
1916 */
1917 static void EDIT_MoveEnd(EDITSTATE *es, BOOL extend, BOOL ctrl)
1918 {
1919 BOOL after_wrap = FALSE;
1920 INT e;
1921
1922 /* Pass a high value in x to make sure of receiving the end of the line */
1923 if (!ctrl && (es->style & ES_MULTILINE))
1924 e = EDIT_CharFromPos(es, 0x3fffffff,
1925 HIWORD(EDIT_EM_PosFromChar(es, es->selection_end, es->flags & EF_AFTER_WRAP)), &after_wrap);
1926 else
1927 e = get_text_length(es);
1928 EDIT_EM_SetSel(es, extend ? es->selection_start : e, e, after_wrap);
1929 EDIT_EM_ScrollCaret(es);
1930 }
1931
1932
1933 /*********************************************************************
1934 *
1935 * EDIT_MoveForward
1936 *
1937 */
1938 static void EDIT_MoveForward(EDITSTATE *es, BOOL extend)
1939 {
1940 INT e = es->selection_end;
1941
1942 if (es->text[e]) {
1943 e++;
1944 if ((es->style & ES_MULTILINE) && (es->text[e - 1] == '\r')) {
1945 if (es->text[e] == '\n')
1946 e++;
1947 else if ((es->text[e] == '\r') && (es->text[e + 1] == '\n'))
1948 e += 2;
1949 }
1950 }
1951 EDIT_EM_SetSel(es, extend ? es->selection_start : e, e, FALSE);
1952 EDIT_EM_ScrollCaret(es);
1953 }
1954
1955
1956 /*********************************************************************
1957 *
1958 * EDIT_MoveHome
1959 *
1960 * Home key: move to beginning of line.
1961 *
1962 */
1963 static void EDIT_MoveHome(EDITSTATE *es, BOOL extend, BOOL ctrl)
1964 {
1965 INT e;
1966
1967 /* Pass the x_offset in x to make sure of receiving the first position of the line */
1968 if (!ctrl && (es->style & ES_MULTILINE))
1969 e = EDIT_CharFromPos(es, -es->x_offset,
1970 HIWORD(EDIT_EM_PosFromChar(es, es->selection_end, es->flags & EF_AFTER_WRAP)), NULL);
1971 else
1972 e = 0;
1973 EDIT_EM_SetSel(es, extend ? es->selection_start : e, e, FALSE);
1974 EDIT_EM_ScrollCaret(es);
1975 }
1976
1977
1978 /*********************************************************************
1979 *
1980 * EDIT_MovePageDown_ML
1981 *
1982 * Only for multi line controls
1983 * Move the caret one page down, on a column with the nearest
1984 * x coordinate on the screen (might be a different column).
1985 *
1986 */
1987 static void EDIT_MovePageDown_ML(EDITSTATE *es, BOOL extend)
1988 {
1989 INT s = es->selection_start;
1990 INT e = es->selection_end;
1991 BOOL after_wrap = (es->flags & EF_AFTER_WRAP);
1992 LRESULT pos = EDIT_EM_PosFromChar(es, e, after_wrap);
1993 INT x = (short)LOWORD(pos);
1994 INT y = (short)HIWORD(pos);
1995
1996 e = EDIT_CharFromPos(es, x,
1997 y + (es->format_rect.bottom - es->format_rect.top),
1998 &after_wrap);
1999 if (!extend)
2000 s = e;
2001 EDIT_EM_SetSel(es, s, e, after_wrap);
2002 EDIT_EM_ScrollCaret(es);
2003 }
2004
2005
2006 /*********************************************************************
2007 *
2008 * EDIT_MovePageUp_ML
2009 *
2010 * Only for multi line controls
2011 * Move the caret one page up, on a column with the nearest
2012 * x coordinate on the screen (might be a different column).
2013 *
2014 */
2015 static void EDIT_MovePageUp_ML(EDITSTATE *es, BOOL extend)
2016 {
2017 INT s = es->selection_start;
2018 INT e = es->selection_end;
2019 BOOL after_wrap = (es->flags & EF_AFTER_WRAP);
2020 LRESULT pos = EDIT_EM_PosFromChar(es, e, after_wrap);
2021 INT x = (short)LOWORD(pos);
2022 INT y = (short)HIWORD(pos);
2023
2024 e = EDIT_CharFromPos(es, x,
2025 y - (es->format_rect.bottom - es->format_rect.top),
2026 &after_wrap);
2027 if (!extend)
2028 s = e;
2029 EDIT_EM_SetSel(es, s, e, after_wrap);
2030 EDIT_EM_ScrollCaret(es);
2031 }
2032
2033
2034 /*********************************************************************
2035 *
2036 * EDIT_MoveUp_ML
2037 *
2038 * Only for multi line controls
2039 * Move the caret one line up, on a column with the nearest
2040 * x coordinate on the screen (might be a different column).
2041 *
2042 */
2043 static void EDIT_MoveUp_ML(EDITSTATE *es, BOOL extend)
2044 {
2045 INT s = es->selection_start;
2046 INT e = es->selection_end;
2047 BOOL after_wrap = (es->flags & EF_AFTER_WRAP);
2048 LRESULT pos = EDIT_EM_PosFromChar(es, e, after_wrap);
2049 INT x = (short)LOWORD(pos);
2050 INT y = (short)HIWORD(pos);
2051
2052 e = EDIT_CharFromPos(es, x, y - es->line_height, &after_wrap);
2053 if (!extend)
2054 s = e;
2055 EDIT_EM_SetSel(es, s, e, after_wrap);
2056 EDIT_EM_ScrollCaret(es);
2057 }
2058
2059
2060 /*********************************************************************
2061 *
2062 * EDIT_MoveWordBackward
2063 *
2064 */
2065 static void EDIT_MoveWordBackward(EDITSTATE *es, BOOL extend)
2066 {
2067 INT s = es->selection_start;
2068 INT e = es->selection_end;
2069 INT l;
2070 INT ll;
2071 INT li;
2072
2073 l = EDIT_EM_LineFromChar(es, e);
2074 ll = EDIT_EM_LineLength(es, e);
2075 li = EDIT_EM_LineIndex(es, l);
2076 if (e - li == 0) {
2077 if (l) {
2078 li = EDIT_EM_LineIndex(es, l - 1);
2079 e = li + EDIT_EM_LineLength(es, li);
2080 }
2081 } else {
2082 e = li + EDIT_CallWordBreakProc(es, li, e - li, ll, WB_LEFT);
2083 }
2084 if (!extend)
2085 s = e;
2086 EDIT_EM_SetSel(es, s, e, FALSE);
2087 EDIT_EM_ScrollCaret(es);
2088 }
2089
2090
2091 /*********************************************************************
2092 *
2093 * EDIT_MoveWordForward
2094 *
2095 */
2096 static void EDIT_MoveWordForward(EDITSTATE *es, BOOL extend)
2097 {
2098 INT s = es->selection_start;
2099 INT e = es->selection_end;
2100 INT l;
2101 INT ll;
2102 INT li;
2103
2104 l = EDIT_EM_LineFromChar(es, e);
2105 ll = EDIT_EM_LineLength(es, e);
2106 li = EDIT_EM_LineIndex(es, l);
2107 if (e - li == ll) {
2108 if ((es->style & ES_MULTILINE) && (l != es->line_count - 1))
2109 e = EDIT_EM_LineIndex(es, l + 1);
2110 } else {
2111 e = li + EDIT_CallWordBreakProc(es,
2112 li, e - li + 1, ll, WB_RIGHT);
2113 }
2114 if (!extend)
2115 s = e;
2116 EDIT_EM_SetSel(es, s, e, FALSE);
2117 EDIT_EM_ScrollCaret(es);
2118 }
2119
2120
2121 /*********************************************************************
2122 *
2123 * EDIT_PaintText
2124 *
2125 */
2126 static INT EDIT_PaintText(EDITSTATE *es, HDC dc, INT x, INT y, INT line, INT col, INT count, BOOL rev)
2127 {
2128 COLORREF BkColor;
2129 COLORREF TextColor;
2130 LOGFONTW underline_font;
2131 HFONT hUnderline = 0;
2132 HFONT old_font = 0;
2133 INT ret;
2134 INT li;
2135 INT BkMode;
2136 SIZE size;
2137
2138 if (!count)
2139 return 0;
2140 BkMode = GetBkMode(dc);
2141 BkColor = GetBkColor(dc);
2142 TextColor = GetTextColor(dc);
2143 if (rev) {
2144 if (es->composition_len == 0)
2145 {
2146 SetBkColor(dc, GetSysColor(COLOR_HIGHLIGHT));
2147 SetTextColor(dc, GetSysColor(COLOR_HIGHLIGHTTEXT));
2148 SetBkMode( dc, OPAQUE);
2149 }
2150 else
2151 {
2152 HFONT current = GetCurrentObject(dc,OBJ_FONT);
2153 GetObjectW(current,sizeof(LOGFONTW),&underline_font);
2154 underline_font.lfUnderline = TRUE;
2155 hUnderline = CreateFontIndirectW(&underline_font);
2156 old_font = SelectObject(dc,hUnderline);
2157 }
2158 }
2159 li = EDIT_EM_LineIndex(es, line);
2160 if (es->style & ES_MULTILINE) {
2161 ret = (INT)LOWORD(TabbedTextOutW(dc, x, y, es->text + li + col, count,
2162 es->tabs_count, es->tabs, es->format_rect.left - es->x_offset));
2163 } else {
2164 LPWSTR text = es->text;
2165 TextOutW(dc, x, y, text + li + col, count);
2166 GetTextExtentPoint32W(dc, text + li + col, count, &size);
2167 ret = size.cx;
2168 if (es->style & ES_PASSWORD)
2169 HeapFree(GetProcessHeap(), 0, text);
2170 }
2171 if (rev) {
2172 if (es->composition_len == 0)
2173 {
2174 SetBkColor(dc, BkColor);
2175 SetTextColor(dc, TextColor);
2176 SetBkMode( dc, BkMode);
2177 }
2178 else
2179 {
2180 if (old_font)
2181 SelectObject(dc,old_font);
2182 if (hUnderline)
2183 DeleteObject(hUnderline);
2184 }
2185 }
2186 return ret;
2187 }
2188
2189
2190 /*********************************************************************
2191 *
2192 * EDIT_PaintLine
2193 *
2194 */
2195 static void EDIT_PaintLine(EDITSTATE *es, HDC dc, INT line, BOOL rev)
2196 {
2197 INT s = 0;
2198 INT e = 0;
2199 INT li = 0;
2200 INT ll = 0;
2201 INT x;
2202 INT y;
2203 LRESULT pos;
2204 SCRIPT_STRING_ANALYSIS ssa;
2205
2206 if (es->style & ES_MULTILINE) {
2207 INT vlc = get_vertical_line_count(es);
2208
2209 if ((line < es->y_offset) || (line > es->y_offset + vlc) || (line >= es->line_count))
2210 return;
2211 } else if (line)
2212 return;
2213
2214 TRACE("line=%d\n", line);
2215
2216 ssa = EDIT_UpdateUniscribeData(es, dc, line);
2217 pos = EDIT_EM_PosFromChar(es, EDIT_EM_LineIndex(es, line), FALSE);
2218 x = (short)LOWORD(pos);
2219 y = (short)HIWORD(pos);
2220
2221 if (es->style & ES_MULTILINE)
2222 {
2223 int line_idx = line;
2224 x = -es->x_offset;
2225 if (es->style & ES_RIGHT || es->style & ES_CENTER)
2226 {
2227 LINEDEF *line_def = es->first_line_def;
2228 int w, lw;
2229
2230 while (line_def && line_idx)
2231 {
2232 line_def = line_def->next;
2233 line_idx--;
2234 }
2235 w = es->format_rect.right - es->format_rect.left;
2236 lw = line_def->width;
2237
2238 if (es->style & ES_RIGHT)
2239 x = w - (lw - x);
2240 else if (es->style & ES_CENTER)
2241 x += (w - lw) / 2;
2242 }
2243 x += es->format_rect.left;
2244 }
2245
2246 if (rev)
2247 {
2248 li = EDIT_EM_LineIndex(es, line);
2249 ll = EDIT_EM_LineLength(es, li);
2250 s = min(es->selection_start, es->selection_end);
2251 e = max(es->selection_start, es->selection_end);
2252 s = min(li + ll, max(li, s));
2253 e = min(li + ll, max(li, e));
2254 }
2255
2256 if (ssa)
2257 ScriptStringOut(ssa, x, y, 0, &es->format_rect, s - li, e - li, FALSE);
2258 else if (rev && (s != e) &&
2259 ((es->flags & EF_FOCUSED) || (es->style & ES_NOHIDESEL))) {
2260 x += EDIT_PaintText(es, dc, x, y, line, 0, s - li, FALSE);
2261 x += EDIT_PaintText(es, dc, x, y, line, s - li, e - s, TRUE);
2262 x += EDIT_PaintText(es, dc, x, y, line, e - li, li + ll - e, FALSE);
2263 } else
2264 x += EDIT_PaintText(es, dc, x, y, line, 0, ll, FALSE);
2265 }
2266
2267
2268 /*********************************************************************
2269 *
2270 * EDIT_AdjustFormatRect
2271 *
2272 * Adjusts the format rectangle for the current font and the
2273 * current client rectangle.
2274 *
2275 */
2276 static void EDIT_AdjustFormatRect(EDITSTATE *es)
2277 {
2278 RECT ClientRect;
2279
2280 es->format_rect.right = max(es->format_rect.right, es->format_rect.left + es->char_width);
2281 if (es->style & ES_MULTILINE)
2282 {
2283 INT fw, vlc, max_x_offset, max_y_offset;
2284
2285 vlc = get_vertical_line_count(es);
2286 es->format_rect.bottom = es->format_rect.top + vlc * es->line_height;
2287
2288 /* correct es->x_offset */
2289 fw = es->format_rect.right - es->format_rect.left;
2290 max_x_offset = es->text_width - fw;
2291 if(max_x_offset < 0) max_x_offset = 0;
2292 if(es->x_offset > max_x_offset)
2293 es->x_offset = max_x_offset;
2294
2295 /* correct es->y_offset */
2296 max_y_offset = es->line_count - vlc;
2297 if(max_y_offset < 0) max_y_offset = 0;
2298 if(es->y_offset > max_y_offset)
2299 es->y_offset = max_y_offset;
2300
2301 /* force scroll info update */
2302 EDIT_UpdateScrollInfo(es);
2303 }
2304 else
2305 /* Windows doesn't care to fix text placement for SL controls */
2306 es->format_rect.bottom = es->format_rect.top + es->line_height;
2307
2308 /* Always stay within the client area */
2309 GetClientRect(es->hwndSelf, &ClientRect);
2310 es->format_rect.bottom = min(es->format_rect.bottom, ClientRect.bottom);
2311
2312 if ((es->style & ES_MULTILINE) && !(es->style & ES_AUTOHSCROLL))
2313 EDIT_BuildLineDefs_ML(es, 0, get_text_length(es), 0, NULL);
2314
2315 EDIT_SetCaretPos(es, es->selection_end, es->flags & EF_AFTER_WRAP);
2316 }
2317
2318
2319 /*********************************************************************
2320 *
2321 * EDIT_SetRectNP
2322 *
2323 * note: this is not (exactly) the handler called on EM_SETRECTNP
2324 * it is also used to set the rect of a single line control
2325 *
2326 */
2327 static void EDIT_SetRectNP(EDITSTATE *es, const RECT *rc)
2328 {
2329 LONG_PTR ExStyle;
2330 INT bw, bh;
2331 ExStyle = GetWindowLongPtrW(es->hwndSelf, GWL_EXSTYLE);
2332
2333 CopyRect(&es->format_rect, rc);
2334
2335 if (ExStyle & WS_EX_CLIENTEDGE) {
2336 es->format_rect.left++;
2337 es->format_rect.right--;
2338
2339 if (es->format_rect.bottom - es->format_rect.top
2340 >= es->line_height + 2)
2341 {
2342 es->format_rect.top++;
2343 es->format_rect.bottom--;
2344 }
2345 }
2346 else if (es->style & WS_BORDER) {
2347 bw = GetSystemMetrics(SM_CXBORDER) + 1;
2348 bh = GetSystemMetrics(SM_CYBORDER) + 1;
2349 es->format_rect.left += bw;
2350 es->format_rect.right -= bw;
2351 if (es->format_rect.bottom - es->format_rect.top
2352 >= es->line_height + 2 * bh)
2353 {
2354 es->format_rect.top += bh;
2355 es->format_rect.bottom -= bh;
2356 }
2357 }
2358
2359 es->format_rect.left += es->left_margin;
2360 es->format_rect.right -= es->right_margin;
2361 EDIT_AdjustFormatRect(es);
2362 }
2363
2364
2365 /*********************************************************************
2366 *
2367 * EM_CHARFROMPOS
2368 *
2369 * returns line number (not index) in high-order word of result.
2370 * NB : Q137805 is unclear about this. POINT * pointer in lParam apply
2371 * to Richedit, not to the edit control. Original documentation is valid.
2372 * FIXME: do the specs mean to return -1 if outside client area or
2373 * if outside formatting rectangle ???
2374 *
2375 */
2376 static LRESULT EDIT_EM_CharFromPos(EDITSTATE *es, INT x, INT y)
2377 {
2378 POINT pt;
2379 RECT rc;
2380 INT index;
2381
2382 pt.x = x;
2383 pt.y = y;
2384 GetClientRect(es->hwndSelf, &rc);
2385 if (!PtInRect(&rc, pt))
2386 return -1;
2387
2388 index = EDIT_CharFromPos(es, x, y, NULL);
2389 return MAKELONG(index, EDIT_EM_LineFromChar(es, index));
2390 }
2391
2392
2393 /*********************************************************************
2394 *
2395 * EM_FMTLINES
2396 *
2397 * Enable or disable soft breaks.
2398 *
2399 * This means: insert or remove the soft linebreak character (\r\r\n).
2400 * Take care to check if the text still fits the buffer after insertion.
2401 * If not, notify with EN_ERRSPACE.
2402 *
2403 */
2404 static BOOL EDIT_EM_FmtLines(EDITSTATE *es, BOOL add_eol)
2405 {
2406 es->flags &= ~EF_USE_SOFTBRK;
2407 if (add_eol) {
2408 es->flags |= EF_USE_SOFTBRK;
2409 FIXME("soft break enabled, not implemented\n");
2410 }
2411 return add_eol;
2412 }
2413
2414
2415 /*********************************************************************
2416 *
2417 * EM_GETHANDLE
2418 *
2419 * Hopefully this won't fire back at us.
2420 * We always start with a fixed buffer in the local heap.
2421 * Despite of the documentation says that the local heap is used
2422 * only if DS_LOCALEDIT flag is set, NT and 2000 always allocate
2423 * buffer on the local heap.
2424 *
2425 */
2426 static HLOCAL EDIT_EM_GetHandle(EDITSTATE *es)
2427 {
2428 HLOCAL hLocal;
2429
2430 if (!(es->style & ES_MULTILINE))
2431 return 0;
2432
2433 if(es->is_unicode)
2434 hLocal = es->hloc32W;
2435 else
2436 {
2437 if(!es->hloc32A)
2438 {
2439 CHAR *textA;
2440 UINT countA, alloc_size;
2441 TRACE("Allocating 32-bit ANSI alias buffer\n");
2442 countA = WideCharToMultiByte(CP_ACP, 0, es->text, -1, NULL, 0, NULL, NULL);
2443 alloc_size = ROUND_TO_GROW(countA);
2444 if(!(es->hloc32A = LocalAlloc(LMEM_MOVEABLE | LMEM_ZEROINIT, alloc_size)))
2445 {
2446 ERR("Could not allocate %d bytes for 32-bit ANSI alias buffer\n", alloc_size);
2447 return 0;
2448 }
2449 textA = LocalLock(es->hloc32A);
2450 WideCharToMultiByte(CP_ACP, 0, es->text, -1, textA, countA, NULL, NULL);
2451 LocalUnlock(es->hloc32A);
2452 }
2453 hLocal = es->hloc32A;
2454 }
2455
2456 es->flags |= EF_APP_HAS_HANDLE;
2457 TRACE("Returning %p, LocalSize() = %ld\n", hLocal, LocalSize(hLocal));
2458 return hLocal;
2459 }
2460
2461
2462 /*********************************************************************
2463 *
2464 * EM_GETLINE
2465 *
2466 */
2467 static INT EDIT_EM_GetLine(EDITSTATE *es, INT line, LPWSTR dst, BOOL unicode)
2468 {
2469 LPWSTR src;
2470 INT line_len, dst_len;
2471 INT i;
2472
2473 if (es->style & ES_MULTILINE) {
2474 if (line >= es->line_count)
2475 return 0;
2476 } else
2477 line = 0;
2478 i = EDIT_EM_LineIndex(es, line);
2479 src = es->text + i;
2480 line_len = EDIT_EM_LineLength(es, i);
2481 dst_len = *(WORD *)dst;
2482 if(unicode)
2483 {
2484 if(dst_len <= line_len)
2485 {
2486 memcpy(dst, src, dst_len * sizeof(WCHAR));
2487 return dst_len;
2488 }
2489 else /* Append 0 if enough space */
2490 {
2491 memcpy(dst, src, line_len * sizeof(WCHAR));
2492 dst[line_len] = 0;
2493 return line_len;
2494 }
2495 }
2496 else
2497 {
2498 INT ret = WideCharToMultiByte(CP_ACP, 0, src, line_len, (LPSTR)dst, dst_len, NULL, NULL);
2499 if(!ret && line_len) /* Insufficient buffer size */
2500 return dst_len;
2501 if(ret < dst_len) /* Append 0 if enough space */
2502 ((LPSTR)dst)[ret] = 0;
2503 return ret;
2504 }
2505 }
2506
2507
2508 /*********************************************************************
2509 *
2510 * EM_GETSEL
2511 *
2512 */
2513 static LRESULT EDIT_EM_GetSel(const EDITSTATE *es, PUINT start, PUINT end)
2514 {
2515 UINT s = es->selection_start;
2516 UINT e = es->selection_end;
2517
2518 ORDER_UINT(s, e);
2519 if (start)
2520 *start = s;
2521 if (end)
2522 *end = e;
2523 return MAKELONG(s, e);
2524 }
2525
2526
2527 /*********************************************************************
2528 *
2529 * EM_REPLACESEL
2530 *
2531 * FIXME: handle ES_NUMBER and ES_OEMCONVERT here
2532 *
2533 */
2534 static void EDIT_EM_ReplaceSel(EDITSTATE *es, BOOL can_undo, LPCWSTR lpsz_replace, BOOL send_update, BOOL honor_limit)
2535 {
2536 UINT strl = strlenW(lpsz_replace);
2537 UINT tl = get_text_length(es);
2538 UINT utl;
2539 UINT s;
2540 UINT e;
2541 UINT i;
2542 UINT size;
2543 LPWSTR p;
2544 HRGN hrgn = 0;
2545 LPWSTR buf = NULL;
2546 UINT bufl = 0;
2547
2548 TRACE("%s, can_undo %d, send_update %d\n",
2549 debugstr_w(lpsz_replace), can_undo, send_update);
2550
2551 s = es->selection_start;
2552 e = es->selection_end;
2553
2554 EDIT_InvalidateUniscribeData(es);
2555 if ((s == e) && !strl)
2556 return;
2557
2558 ORDER_UINT(s, e);
2559
2560 size = tl - (e - s) + strl;
2561 if (!size)
2562 es->text_width = 0;
2563
2564 /* Issue the EN_MAXTEXT notification and continue with replacing text
2565 * such that buffer limit is honored. */
2566 if ((honor_limit) && (size > es->buffer_limit)) {
2567 EDIT_NOTIFY_PARENT(es, EN_MAXTEXT);
2568 /* Buffer limit can be smaller than the actual length of text in combobox */
2569 if (es->buffer_limit < (tl - (e-s)))
2570 strl = 0;
2571 else
2572 strl = es->buffer_limit - (tl - (e-s));
2573 }
2574
2575 if (!EDIT_MakeFit(es, tl - (e - s) + strl))
2576 return;
2577
2578 if (e != s) {
2579 /* there is something to be deleted */
2580 TRACE("deleting stuff.\n");
2581 bufl = e - s;
2582 buf = HeapAlloc(GetProcessHeap(), 0, (bufl + 1) * sizeof(WCHAR));
2583 if (!buf) return;
2584 memcpy(buf, es->text + s, bufl * sizeof(WCHAR));
2585 buf[bufl] = 0; /* ensure 0 termination */
2586 /* now delete */
2587 strcpyW(es->text + s, es->text + e);
2588 text_buffer_changed(es);
2589 }
2590 if (strl) {
2591 /* there is an insertion */
2592 tl = get_text_length(es);
2593 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));
2594 for (p = es->text + tl ; p >= es->text + s ; p--)
2595 p[strl] = p[0];
2596 for (i = 0 , p = es->text + s ; i < strl ; i++)
2597 p[i] = lpsz_replace[i];
2598 if(es->style & ES_UPPERCASE)
2599 CharUpperBuffW(p, strl);
2600 else if(es->style & ES_LOWERCASE)
2601 CharLowerBuffW(p, strl);
2602 text_buffer_changed(es);
2603 }
2604 if (es->style & ES_MULTILINE)
2605 {
2606 INT st = min(es->selection_start, es->selection_end);
2607 INT vlc = get_vertical_line_count(es);
2608
2609 hrgn = CreateRectRgn(0, 0, 0, 0);
2610 EDIT_BuildLineDefs_ML(es, st, st + strl,
2611 strl - abs(es->selection_end - es->selection_start), hrgn);
2612 /* if text is too long undo all changes */
2613 if (honor_limit && !(es->style & ES_AUTOVSCROLL) && (es->line_count > vlc)) {
2614 if (strl)
2615 strcpyW(es->text + e, es->text + e + strl);
2616 if (e != s)
2617 for (i = 0 , p = es->text ; i < e - s ; i++)
2618 p[i + s] = buf[i];
2619 text_buffer_changed(es);
2620 EDIT_BuildLineDefs_ML(es, s, e,
2621 abs(es->selection_end - es->selection_start) - strl, hrgn);
2622 strl = 0;
2623 e = s;
2624 hrgn = CreateRectRgn(0, 0, 0, 0);
2625 EDIT_NOTIFY_PARENT(es, EN_MAXTEXT);
2626 }
2627 }
2628 else {
2629 INT fw = es->format_rect.right - es->format_rect.left;
2630 EDIT_InvalidateUniscribeData(es);
2631 EDIT_CalcLineWidth_SL(es);
2632 /* remove chars that don't fit */
2633 if (honor_limit && !(es->style & ES_AUTOHSCROLL) && (es->text_width > fw)) {
2634 while ((es->text_width > fw) && s + strl >= s) {
2635 strcpyW(es->text + s + strl - 1, es->text + s + strl);
2636 strl--;
2637 es->text_length = -1;
2638 EDIT_InvalidateUniscribeData(es);
2639 EDIT_CalcLineWidth_SL(es);
2640 }
2641 text_buffer_changed(es);
2642 EDIT_NOTIFY_PARENT(es, EN_MAXTEXT);
2643 }
2644 }
2645
2646 if (e != s) {
2647 if (can_undo) {
2648 utl = strlenW(es->undo_text);
2649 if (!es->undo_insert_count && (*es->undo_text && (s == es->undo_position))) {
2650 /* undo-buffer is extended to the right */
2651 EDIT_MakeUndoFit(es, utl + e - s);
2652 memcpy(es->undo_text + utl, buf, (e - s)*sizeof(WCHAR));
2653 (es->undo_text + utl)[e - s] = 0; /* ensure 0 termination */
2654 } else if (!es->undo_insert_count && (*es->undo_text && (e == es->undo_position))) {
2655 /* undo-buffer is extended to the left */
2656 EDIT_MakeUndoFit(es, utl + e - s);
2657 for (p = es->undo_text + utl ; p >= es->undo_text ; p--)
2658 p[e - s] = p[0];
2659 for (i = 0 , p = es->undo_text ; i < e - s ; i++)
2660 p[i] = buf[i];
2661 es->undo_position = s;
2662 } else {
2663 /* new undo-buffer */
2664 EDIT_MakeUndoFit(es, e - s);
2665 memcpy(es->undo_text, buf, (e - s)*sizeof(WCHAR));
2666 es->undo_text[e - s] = 0; /* ensure 0 termination */
2667 es->undo_position = s;
2668 }
2669 /* any deletion makes the old insertion-undo invalid */
2670 es->undo_insert_count = 0;
2671 } else
2672 EDIT_EM_EmptyUndoBuffer(es);
2673 }
2674 if (strl) {
2675 if (can_undo) {
2676 if ((s == es->undo_position) ||
2677 ((es->undo_insert_count) &&
2678 (s == es->undo_position + es->undo_insert_count)))
2679 /*
2680 * insertion is new and at delete position or
2681 * an extension to either left or right
2682 */
2683 es->undo_insert_count += strl;
2684 else {
2685 /* new insertion undo */
2686 es->undo_position = s;
2687 es->undo_insert_count = strl;
2688 /* new insertion makes old delete-buffer invalid */
2689 *es->undo_text = '\0';
2690 }
2691 } else
2692 EDIT_EM_EmptyUndoBuffer(es);
2693 }
2694
2695 if (bufl)
2696 HeapFree(GetProcessHeap(), 0, buf);
2697
2698 s += strl;
2699
2700 /* If text has been deleted and we're right or center aligned then scroll rightward */
2701 if (es->style & (ES_RIGHT | ES_CENTER))
2702 {
2703 INT delta = strl - abs(es->selection_end - es->selection_start);
2704
2705 if (delta < 0 && es->x_offset)
2706 {
2707 if (abs(delta) > es->x_offset)
2708 es->x_offset = 0;
2709 else
2710 es->x_offset += delta;
2711 }
2712 }
2713
2714 EDIT_EM_SetSel(es, s, s, FALSE);
2715 es->flags |= EF_MODIFIED;
2716 if (send_update) es->flags |= EF_UPDATE;
2717 if (hrgn)
2718 {
2719 EDIT_UpdateTextRegion(es, hrgn, TRUE);
2720 DeleteObject(hrgn);
2721 }
2722 else
2723 EDIT_UpdateText(es, NULL, TRUE);
2724
2725 EDIT_EM_ScrollCaret(es);
2726
2727 /* force scroll info update */
2728 EDIT_UpdateScrollInfo(es);
2729
2730
2731 if(send_update || (es->flags & EF_UPDATE))
2732 {
2733 es->flags &= ~EF_UPDATE;
2734 EDIT_NOTIFY_PARENT(es, EN_CHANGE);
2735 }
2736 EDIT_InvalidateUniscribeData(es);
2737 }
2738
2739
2740 /*********************************************************************
2741 *
2742 * EM_SETHANDLE
2743 *
2744 * FIXME: ES_LOWERCASE, ES_UPPERCASE, ES_OEMCONVERT, ES_NUMBER ???
2745 *
2746 */
2747 static void EDIT_EM_SetHandle(EDITSTATE *es, HLOCAL hloc)
2748 {
2749 if (!(es->style & ES_MULTILINE))
2750 return;
2751
2752 if (!hloc) {
2753 WARN("called with NULL handle\n");
2754 return;
2755 }
2756
2757 EDIT_UnlockBuffer(es, TRUE);
2758
2759 if(es->is_unicode)
2760 {
2761 if(es->hloc32A)
2762 {
2763 LocalFree(es->hloc32A);
2764 es->hloc32A = NULL;
2765 }
2766 es->hloc32W = hloc;
2767 }
2768 else
2769 {
2770 INT countW, countA;
2771 HLOCAL hloc32W_new;
2772 WCHAR *textW;
2773 CHAR *textA;
2774
2775 countA = LocalSize(hloc);
2776 textA = LocalLock(hloc);
2777 countW = MultiByteToWideChar(CP_ACP, 0, textA, countA, NULL, 0);
2778 if(!(hloc32W_new = LocalAlloc(LMEM_MOVEABLE | LMEM_ZEROINIT, countW * sizeof(WCHAR))))
2779 {
2780 ERR("Could not allocate new unicode buffer\n");
2781 return;
2782 }
2783 textW = LocalLock(hloc32W_new);
2784 MultiByteToWideChar(CP_ACP, 0, textA, countA, textW, countW);
2785 LocalUnlock(hloc32W_new);
2786 LocalUnlock(hloc);
2787
2788 if(es->hloc32W)
2789 LocalFree(es->hloc32W);
2790
2791 es->hloc32W = hloc32W_new;
2792 es->hloc32A = hloc;
2793 }
2794
2795 es->buffer_size = LocalSize(es->hloc32W)/sizeof(WCHAR) - 1;
2796
2797 es->flags |= EF_APP_HAS_HANDLE;
2798 EDIT_LockBuffer(es);
2799
2800 es->x_offset = es->y_offset = 0;
2801 es->selection_start = es->selection_end = 0;
2802 EDIT_EM_EmptyUndoBuffer(es);
2803 es->flags &= ~EF_MODIFIED;
2804 es->flags &= ~EF_UPDATE;
2805 EDIT_BuildLineDefs_ML(es, 0, get_text_length(es), 0, NULL);
2806 EDIT_UpdateText(es, NULL, TRUE);
2807 EDIT_EM_ScrollCaret(es);
2808 /* force scroll info update */
2809 EDIT_UpdateScrollInfo(es);
2810 }
2811
2812
2813 /*********************************************************************
2814 *
2815 * EM_SETLIMITTEXT
2816 *
2817 * NOTE: this version currently implements WinNT limits
2818 *
2819 */
2820 static void EDIT_EM_SetLimitText(EDITSTATE *es, UINT limit)
2821 {
2822 if (!limit) limit = ~0u;
2823 if (!(es->style & ES_MULTILINE)) limit = min(limit, 0x7ffffffe);
2824 es->buffer_limit = limit;
2825 }
2826
2827
2828 /*********************************************************************
2829 *
2830 * EM_SETMARGINS
2831 *
2832 * EC_USEFONTINFO is used as a left or right value i.e. lParam and not as an
2833 * action wParam despite what the docs say. EC_USEFONTINFO calculates the
2834 * margin according to the textmetrics of the current font.
2835 *
2836 * FIXME - With TrueType or vector fonts EC_USEFONTINFO currently sets one third
2837 * of the char's width as the margin, but this is not how Windows handles this.
2838 * For all other fonts Windows sets the margins to zero.
2839 *
2840 * FIXME - When EC_USEFONTINFO is used the margins only change if the
2841 * edit control is equal to or larger than a certain size.
2842 * Interestingly if one subtracts both the left and right margins from
2843 * this size one always seems to get an even number. The extents of
2844 * the (four character) string "'**'" match this quite closely, so
2845 * we'll use this until we come up with a better idea.
2846 */
2847 static int calc_min_set_margin_size(HDC dc, INT left, INT right)
2848 {
2849 WCHAR magic_string[] = {'\'','*','*','\'', 0};
2850 SIZE sz;
2851
2852 GetTextExtentPointW(dc, magic_string, sizeof(magic_string)/sizeof(WCHAR) - 1, &sz);
2853 return sz.cx + left + right;
2854 }
2855
2856 static void EDIT_EM_SetMargins(EDITSTATE *es, INT action,
2857 WORD left, WORD right, BOOL repaint)
2858 {
2859 TEXTMETRICW tm;
2860 INT default_left_margin = 0; /* in pixels */
2861 INT default_right_margin = 0; /* in pixels */
2862
2863 /* Set the default margins depending on the font */
2864 if (es->font && (left == EC_USEFONTINFO || right == EC_USEFONTINFO)) {
2865 HDC dc = GetDC(es->hwndSelf);
2866 HFONT old_font = SelectObject(dc, es->font);
2867 GetTextMetricsW(dc, &tm);
2868 /* The default margins are only non zero for TrueType or Vector fonts */
2869 if (tm.tmPitchAndFamily & ( TMPF_VECTOR | TMPF_TRUETYPE )) {
2870 int min_size;
2871 RECT rc;
2872 /* This must be calculated more exactly! But how? */
2873 default_left_margin = tm.tmAveCharWidth / 2;
2874 default_right_margin = tm.tmAveCharWidth / 2;
2875 min_size = calc_min_set_margin_size(dc, default_left_margin, default_right_margin);
2876 GetClientRect(es->hwndSelf, &rc);
2877 if(rc.right - rc.left < min_size) {
2878 default_left_margin = es->left_margin;
2879 default_right_margin = es->right_margin;
2880 }
2881 }
2882 SelectObject(dc, old_font);
2883 ReleaseDC(es->hwndSelf, dc);
2884 }
2885
2886 if (action & EC_LEFTMARGIN) {
2887 es->format_rect.left -= es->left_margin;
2888 if (left != EC_USEFONTINFO)
2889 es->left_margin = left;
2890 else
2891 es->left_margin = default_left_margin;
2892 es->format_rect.left += es->left_margin;
2893 }
2894
2895 if (action & EC_RIGHTMARGIN) {
2896 es->format_rect.right += es->right_margin;
2897 if (right != EC_USEFONTINFO)
2898 es->right_margin = right;
2899 else
2900 es->right_margin = default_right_margin;
2901 es->format_rect.right -= es->right_margin;
2902 }
2903
2904 if (action & (EC_LEFTMARGIN | EC_RIGHTMARGIN)) {
2905 EDIT_AdjustFormatRect(es);
2906 if (repaint) EDIT_UpdateText(es, NULL, TRUE);
2907 }
2908
2909 TRACE("left=%d, right=%d\n", es->left_margin, es->right_margin);
2910 }
2911
2912
2913 /*********************************************************************
2914 *
2915 * EM_SETPASSWORDCHAR
2916 *
2917 */
2918 static void EDIT_EM_SetPasswordChar(EDITSTATE *es, WCHAR c)
2919 {
2920 LONG style;
2921
2922 if (es->style & ES_MULTILINE)
2923 return;
2924
2925 if (es->password_char == c)
2926 return;
2927
2928 style = GetWindowLongW( es->hwndSelf, GWL_STYLE );
2929 es->password_char = c;
2930 if (c) {
2931 SetWindowLongW( es->hwndSelf, GWL_STYLE, style | ES_PASSWORD );
2932 es->style |= ES_PASSWORD;
2933 } else {
2934 SetWindowLongW( es->hwndSelf, GWL_STYLE, style & ~ES_PASSWORD );
2935 es->style &= ~ES_PASSWORD;
2936 }
2937 EDIT_InvalidateUniscribeData(es);
2938 EDIT_UpdateText(es, NULL, TRUE);
2939 }
2940
2941
2942 /*********************************************************************
2943 *
2944 * EM_SETTABSTOPS
2945 *
2946 */
2947 static BOOL EDIT_EM_SetTabStops(EDITSTATE *es, INT count, const INT *tabs)
2948 {
2949 if (!(es->style & ES_MULTILINE))
2950 return FALSE;
2951 HeapFree(GetProcessHeap(), 0, es->tabs);
2952 es->tabs_count = count;
2953 if (!count)
2954 es->tabs = NULL;
2955 else {
2956 es->tabs = HeapAlloc(GetProcessHeap(), 0, count * sizeof(INT));
2957 memcpy(es->tabs, tabs, count * sizeof(INT));
2958 }
2959 EDIT_InvalidateUniscribeData(es);
2960 return TRUE;
2961 }
2962
2963
2964 /*********************************************************************
2965 *
2966 * EM_SETWORDBREAKPROC
2967 *
2968 */
2969 static void EDIT_EM_SetWordBreakProc(EDITSTATE *es, void *wbp)
2970 {
2971 if (es->word_break_proc == wbp)
2972 return;
2973
2974 es->word_break_proc = wbp;
2975
2976 if ((es->style & ES_MULTILINE) && !(es->style & ES_AUTOHSCROLL)) {
2977 EDIT_BuildLineDefs_ML(es, 0, get_text_length(es), 0, NULL);
2978 EDIT_UpdateText(es, NULL, TRUE);
2979 }
2980 }
2981
2982
2983 /*********************************************************************
2984 *
2985 * EM_UNDO / WM_UNDO
2986 *
2987 */
2988 static BOOL EDIT_EM_Undo(EDITSTATE *es)
2989 {
2990 INT ulength;
2991 LPWSTR utext;
2992
2993 /* As per MSDN spec, for a single-line edit control,
2994 the return value is always TRUE */
2995 if( es->style & ES_READONLY )
2996 return !(es->style & ES_MULTILINE);
2997
2998 ulength = strlenW(es->undo_text);
2999
3000 utext = HeapAlloc(GetProcessHeap(), 0, (ulength + 1) * sizeof(WCHAR));
3001
3002 strcpyW(utext, es->undo_text);
3003
3004 TRACE("before UNDO:insertion length = %d, deletion buffer = %s\n",
3005 es->undo_insert_count, debugstr_w(utext));
3006
3007 EDIT_EM_SetSel(es, es->undo_position, es->undo_position + es->undo_insert_count, FALSE);
3008 EDIT_EM_EmptyUndoBuffer(es);
3009 EDIT_EM_ReplaceSel(es, TRUE, utext, TRUE, TRUE);
3010 EDIT_EM_SetSel(es, es->undo_position, es->undo_position + es->undo_insert_count, FALSE);
3011 /* send the notification after the selection start and end are set */
3012 EDIT_NOTIFY_PARENT(es, EN_CHANGE);
3013 EDIT_EM_ScrollCaret(es);
3014 HeapFree(GetProcessHeap(), 0, utext);
3015
3016 TRACE("after UNDO:insertion length = %d, deletion buffer = %s\n",
3017 es->undo_insert_count, debugstr_w(es->undo_text));
3018 return TRUE;
3019 }
3020
3021
3022 /* Helper function for WM_CHAR
3023 *
3024 * According to an MSDN blog article titled "Just because you're a control
3025 * doesn't mean that you're necessarily inside a dialog box," multiline edit
3026 * controls without ES_WANTRETURN would attempt to detect whether it is inside
3027 * a dialog box or not.
3028 */
3029 static inline BOOL EDIT_IsInsideDialog(EDITSTATE *es)
3030 {
3031 return (es->flags & EF_DIALOGMODE);
3032 }
3033
3034
3035 /*********************************************************************
3036 *
3037 * WM_PASTE
3038 *
3039 */
3040 static void EDIT_WM_Paste(EDITSTATE *es)
3041 {
3042 HGLOBAL hsrc;
3043 LPWSTR src;
3044
3045 /* Protect read-only edit control from modification */
3046 if(es->style & ES_READONLY)
3047 return;
3048
3049 OpenClipboard(es->hwndSelf);
3050 if ((hsrc = GetClipboardData(CF_UNICODETEXT))) {
3051 src = GlobalLock(hsrc);
3052 EDIT_EM_ReplaceSel(es, TRUE, src, TRUE, TRUE);
3053 GlobalUnlock(hsrc);
3054 }
3055 else if (es->style & ES_PASSWORD) {
3056 /* clear selected text in password edit box even with empty clipboard */
3057 EDIT_EM_ReplaceSel(es, TRUE, empty_stringW, TRUE, TRUE);
3058 }
3059 CloseClipboard();
3060 }
3061
3062
3063 /*********************************************************************
3064 *
3065 * WM_COPY
3066 *
3067 */
3068 static void EDIT_WM_Copy(EDITSTATE *es)
3069 {
3070 INT s = min(es->selection_start, es->selection_end);
3071 INT e = max(es->selection_start, es->selection_end);
3072 HGLOBAL hdst;
3073 LPWSTR dst;
3074 DWORD len;
3075
3076 if (e == s) return;
3077
3078 len = e - s;
3079 hdst = GlobalAlloc(GMEM_MOVEABLE | GMEM_DDESHARE, (len + 1) * sizeof(WCHAR));
3080 dst = GlobalLock(hdst);
3081 memcpy(dst, es->text + s, len * sizeof(WCHAR));
3082 dst[len] = 0; /* ensure 0 termination */
3083 TRACE("%s\n", debugstr_w(dst));
3084 GlobalUnlock(hdst);
3085 OpenClipboard(es->hwndSelf);
3086 EmptyClipboard();
3087 SetClipboardData(CF_UNICODETEXT, hdst);
3088 CloseClipboard();
3089 }
3090
3091
3092 /*********************************************************************
3093 *
3094 * WM_CLEAR
3095 *
3096 */
3097 static inline void EDIT_WM_Clear(EDITSTATE *es)
3098 {
3099 /* Protect read-only edit control from modification */
3100 if(es->style & ES_READONLY)
3101 return;
3102
3103 EDIT_EM_ReplaceSel(es, TRUE, empty_stringW, TRUE, TRUE);
3104 }
3105
3106
3107 /*********************************************************************
3108 *
3109 * WM_CUT
3110 *
3111 */
3112 static inline void EDIT_WM_Cut(EDITSTATE *es)
3113 {
3114 EDIT_WM_Copy(es);
3115 EDIT_WM_Clear(es);
3116 }
3117
3118
3119 /*********************************************************************
3120 *
3121 * WM_CHAR
3122 *
3123 */
3124 static LRESULT EDIT_WM_Char(EDITSTATE *es, WCHAR c)
3125 {
3126 BOOL control;
3127
3128 control = GetKeyState(VK_CONTROL) & 0x8000;
3129
3130 switch (c) {
3131 case '\r':
3132 /* If it's not a multiline edit box, it would be ignored below.
3133 * For multiline edit without ES_WANTRETURN, we have to make a
3134 * special case.
3135 */
3136 if ((es->style & ES_MULTILINE) && !(es->style & ES_WANTRETURN))
3137 if (EDIT_IsInsideDialog(es))
3138 break;
3139 case '\n':
3140 if (es->style & ES_MULTILINE) {
3141 if (es->style & ES_READONLY) {
3142 EDIT_MoveHome(es, FALSE, FALSE);
3143 EDIT_MoveDown_ML(es, FALSE);
3144 } else {
3145 static const WCHAR cr_lfW[] = {'\r','\n',0};
3146 EDIT_EM_ReplaceSel(es, TRUE, cr_lfW, TRUE, TRUE);
3147 }
3148 }
3149 break;
3150 case '\t':
3151 if ((es->style & ES_MULTILINE) && !(es->style & ES_READONLY))
3152 {
3153 static const WCHAR tabW[] = {'\t',0};
3154 if (EDIT_IsInsideDialog(es))
3155 break;
3156 EDIT_EM_ReplaceSel(es, TRUE, tabW, TRUE, TRUE);
3157 }
3158 break;
3159 case VK_BACK:
3160 if (!(es->style & ES_READONLY) && !control) {
3161 if (es->selection_start != es->selection_end)
3162 EDIT_WM_Clear(es);
3163 else {
3164 /* delete character left of caret */
3165 EDIT_EM_SetSel(es, (UINT)-1, 0, FALSE);
3166 EDIT_MoveBackward(es, TRUE);
3167 EDIT_WM_Clear(es);
3168 }
3169 }
3170 break;
3171 case 0x03: /* ^C */
3172 if (!(es->style & ES_PASSWORD))
3173 SendMessageW(es->hwndSelf, WM_COPY, 0, 0);
3174 break;
3175 case 0x16: /* ^V */
3176 if (!(es->style & ES_READONLY))
3177 SendMessageW(es->hwndSelf, WM_PASTE, 0, 0);
3178 break;
3179 case 0x18: /* ^X */
3180 if (!((es->style & ES_READONLY) || (es->style & ES_PASSWORD)))
3181 SendMessageW(es->hwndSelf, WM_CUT, 0, 0);
3182 break;
3183 case 0x1A: /* ^Z */
3184 if (!(es->style & ES_READONLY))
3185 SendMessageW(es->hwndSelf, WM_UNDO, 0, 0);
3186 break;
3187
3188 default:
3189 /*If Edit control style is ES_NUMBER allow users to key in only numeric values*/
3190 if( (es->style & ES_NUMBER) && !( c >= '0' && c <= '9') )
3191 break;
3192
3193 if (!(es->style & ES_READONLY) && (c >= ' ') && (c != 127)) {
3194 WCHAR str[2];
3195 str[0] = c;
3196 str[1] = '\0';
3197 EDIT_EM_ReplaceSel(es, TRUE, str, TRUE, TRUE);
3198 }
3199 break;
3200 }
3201 return 1;
3202 }
3203
3204
3205 /*********************************************************************
3206 *
3207 * WM_COMMAND
3208 *
3209 */
3210 static void EDIT_WM_Command(EDITSTATE *es, INT code, INT id, HWND control)
3211 {
3212 if (code || control)
3213 return;
3214
3215 switch (id) {
3216 case EM_UNDO:
3217 SendMessageW(es->hwndSelf, WM_UNDO, 0, 0);
3218 break;
3219 case WM_CUT:
3220 SendMessageW(es->hwndSelf, WM_CUT, 0, 0);
3221 break;
3222 case WM_COPY:
3223 SendMessageW(es->hwndSelf, WM_COPY, 0, 0);
3224 break;
3225 case WM_PASTE:
3226 SendMessageW(es->hwndSelf, WM_PASTE, 0, 0);
3227 break;
3228 case WM_CLEAR:
3229 SendMessageW(es->hwndSelf, WM_CLEAR, 0, 0);
3230 break;
3231 case EM_SETSEL:
3232 EDIT_EM_SetSel(es, 0, (UINT)-1, FALSE);
3233 EDIT_EM_ScrollCaret(es);
3234 break;
3235 default:
3236 ERR("unknown menu item, please report\n");
3237 break;
3238 }
3239 }
3240
3241
3242 /*********************************************************************
3243 *
3244 * WM_CONTEXTMENU
3245 *
3246 * Note: the resource files resource/sysres_??.rc cannot define a
3247 * single popup menu. Hence we use a (dummy) menubar
3248 * containing the single popup menu as its first item.
3249 *
3250 * FIXME: the message identifiers have been chosen arbitrarily,
3251 * hence we use MF_BYPOSITION.
3252 * We might as well use the "real" values (anybody knows ?)
3253 * The menu definition is in resources/sysres_??.rc.
3254 * Once these are OK, we better use MF_BYCOMMAND here
3255 * (as we do in EDIT_WM_Command()).
3256 *
3257 */
3258 static void EDIT_WM_ContextMenu(EDITSTATE *es, INT x, INT y)
3259 {
3260 HMENU menu = LoadMenuA(user32_module, "EDITMENU");
3261 HMENU popup = GetSubMenu(menu, 0);
3262 UINT start = es->selection_start;
3263 UINT end = es->selection_end;
3264
3265 ORDER_UINT(start, end);
3266
3267 /* undo */
3268 EnableMenuItem(popup, 0, MF_BYPOSITION | (EDIT_EM_CanUndo(es) && !(es->style & ES_READONLY) ? MF_ENABLED : MF_GRAYED));
3269 /* cut */
3270 EnableMenuItem(popup, 2, MF_BYPOSITION | ((end - start) && !(es->style & ES_PASSWORD) && !(es->style & ES_READONLY) ? MF_ENABLED : MF_GRAYED));
3271 /* copy */
3272 EnableMenuItem(popup, 3, MF_BYPOSITION | ((end - start) && !(es->style & ES_PASSWORD) ? MF_ENABLED : MF_GRAYED));
3273 /* paste */
3274 EnableMenuItem(popup, 4, MF_BYPOSITION | (IsClipboardFormatAvailable(CF_UNICODETEXT) && !(es->style & ES_READONLY) ? MF_ENABLED : MF_GRAYED));
3275 /* delete */
3276 EnableMenuItem(popup, 5, MF_BYPOSITION | ((end - start) && !(es->style & ES_READONLY) ? MF_ENABLED : MF_GRAYED));
3277 /* select all */
3278 EnableMenuItem(popup, 7, MF_BYPOSITION | (start || (end != get_text_length(es)) ? MF_ENABLED : MF_GRAYED));
3279
3280 if (x == -1 && y == -1) /* passed via VK_APPS press/release */
3281 {
3282 RECT rc;
3283 /* Windows places the menu at the edit's center in this case */
3284 WIN_GetRectangles( es->hwndSelf, COORDS_SCREEN, NULL, &rc );
3285 x = rc.left + (rc.right - rc.left) / 2;
3286 y = rc.top + (rc.bottom - rc.top) / 2;
3287 }
3288
3289 if (!(es->flags & EF_FOCUSED))
3290 SetFocus(es->hwndSelf);
3291
3292 TrackPopupMenu(popup, TPM_LEFTALIGN | TPM_RIGHTBUTTON, x, y, 0, es->hwndSelf, NULL);
3293 DestroyMenu(menu);
3294 }
3295
3296
3297 /*********************************************************************
3298 *
3299 * WM_GETTEXT
3300 *
3301 */
3302 static INT EDIT_WM_GetText(const EDITSTATE *es, INT count, LPWSTR dst, BOOL unicode)
3303 {
3304 if(!count) return 0;
3305
3306 if(unicode)
3307 {
3308 lstrcpynW(dst, es->text, count);
3309 return strlenW(dst);
3310 }
3311 else
3312 {
3313 LPSTR textA = (LPSTR)dst;
3314 if (!WideCharToMultiByte(CP_ACP, 0, es->text, -1, textA, count, NULL, NULL))
3315 textA[count - 1] = 0; /* ensure 0 termination */
3316 return strlen(textA);
3317 }
3318 }
3319
3320 /*********************************************************************
3321 *
3322 * EDIT_CheckCombo
3323 *
3324 */
3325 static BOOL EDIT_CheckCombo(EDITSTATE *es, UINT msg, INT key)
3326 {
3327 HWND hLBox = es->hwndListBox;
3328 HWND hCombo;
3329 BOOL bDropped;
3330 int nEUI;
3331
3332 if (!hLBox)
3333 return FALSE;
3334
3335 hCombo = GetParent(es->hwndSelf);
3336 bDropped = TRUE;
3337 nEUI = 0;
3338
3339 TRACE_(combo)("[%p]: handling msg %x (%x)\n", es->hwndSelf, msg, key);
3340
3341 if (key == VK_UP || key == VK_DOWN)
3342 {
3343 if (SendMessageW(hCombo, CB_GETEXTENDEDUI, 0, 0))
3344 nEUI = 1;
3345
3346 if (msg == WM_KEYDOWN || nEUI)
3347 bDropped = (BOOL)SendMessageW(hCombo, CB_GETDROPPEDSTATE, 0, 0);
3348 }
3349
3350 switch (msg)
3351 {
3352 case WM_KEYDOWN:
3353 if (!bDropped && nEUI && (key == VK_UP || key == VK_DOWN))
3354 {
3355 /* make sure ComboLBox pops up */
3356 SendMessageW(hCombo, CB_SETEXTENDEDUI, FALSE, 0);
3357 key = VK_F4;
3358 nEUI = 2;
3359 }
3360
3361 SendMessageW(hLBox, WM_KEYDOWN, key, 0);
3362 break;
3363
3364 case WM_SYSKEYDOWN: /* Handle Alt+up/down arrows */
3365 if (nEUI)
3366 SendMessageW(hCombo, CB_SHOWDROPDOWN, bDropped ? FALSE : TRUE, 0);
3367 else
3368 SendMessageW(hLBox, WM_KEYDOWN, VK_F4, 0);
3369 break;
3370 }
3371
3372 if(nEUI == 2)
3373 SendMessageW(hCombo, CB_SETEXTENDEDUI, TRUE, 0);
3374
3375 return TRUE;
3376 }
3377
3378
3379 /*********************************************************************
3380 *
3381 * WM_KEYDOWN
3382 *
3383 * Handling of special keys that don't produce a WM_CHAR
3384 * (i.e. non-printable keys) & Backspace & Delete
3385 *
3386 */
3387 static LRESULT EDIT_WM_KeyDown(EDITSTATE *es, INT key)
3388 {
3389 BOOL shift;
3390 BOOL control;
3391
3392 if (GetKeyState(VK_MENU) & 0x8000)
3393 return 0;
3394
3395 shift = GetKeyState(VK_SHIFT) & 0x8000;
3396 control = GetKeyState(VK_CONTROL) & 0x8000;
3397
3398 switch (key) {
3399 case VK_F4:
3400 case VK_UP:
3401 if (EDIT_CheckCombo(es, WM_KEYDOWN, key) || key == VK_F4)
3402 break;
3403
3404 /* fall through */
3405 case VK_LEFT:
3406 if ((es->style & ES_MULTILINE) && (key == VK_UP))
3407 EDIT_MoveUp_ML(es, shift);
3408 else
3409 if (control)
3410 EDIT_MoveWordBackward(es, shift);
3411 else
3412 EDIT_MoveBackward(es, shift);
3413 break;
3414 case VK_DOWN:
3415 if (EDIT_CheckCombo(es, WM_KEYDOWN, key))
3416 break;
3417 /* fall through */
3418 case VK_RIGHT:
3419 if ((es->style & ES_MULTILINE) && (key == VK_DOWN))
3420 EDIT_MoveDown_ML(es, shift);
3421 else if (control)
3422 EDIT_MoveWordForward(es, shift);
3423 else
3424 EDIT_MoveForward(es, shift);
3425 break;
3426 case VK_HOME:
3427 EDIT_MoveHome(es, shift, control);
3428 break;
3429 case VK_END:
3430 EDIT_MoveEnd(es, shift, control);
3431 break;
3432 case VK_PRIOR:
3433 if (es->style & ES_MULTILINE)
3434 EDIT_MovePageUp_ML(es, shift);
3435 else
3436 EDIT_CheckCombo(es, WM_KEYDOWN, key);
3437 break;
3438 case VK_NEXT:
3439 if (es->style & ES_MULTILINE)
3440 EDIT_MovePageDown_ML(es, shift);
3441 else
3442 EDIT_CheckCombo(es, WM_KEYDOWN, key);
3443 break;
3444 case VK_DELETE:
3445 if (!(es->style & ES_READONLY) && !(shift && control)) {
3446 if (es->selection_start != es->selection_end) {
3447 if (shift)
3448 EDIT_WM_Cut(es);
3449 else
3450 EDIT_WM_Clear(es);
3451 } else {
3452 if (shift) {
3453 /* delete character left of caret */
3454 EDIT_EM_SetSel(es, (UINT)-1, 0, FALSE);
3455 EDIT_MoveBackward(es, TRUE);
3456 EDIT_WM_Clear(es);
3457 } else if (control) {
3458 /* delete to end of line */
3459 EDIT_EM_SetSel(es, (UINT)-1, 0, FALSE);
3460 EDIT_MoveEnd(es, TRUE, FALSE);
3461 EDIT_WM_Clear(es);
3462 } else {
3463 /* delete character right of caret */
3464 EDIT_EM_SetSel(es, (UINT)-1, 0, FALSE);
3465 EDIT_MoveForward(es, TRUE);
3466 EDIT_WM_Clear(es);
3467 }
3468 }
3469 }
3470 break;
3471 case VK_INSERT:
3472 if (shift) {
3473 if (!(es->style & ES_READONLY))
3474 EDIT_WM_Paste(es);
3475 } else if (control)
3476 EDIT_WM_Copy(es);
3477 break;
3478 case VK_RETURN:
3479 /* If the edit doesn't want the return send a message to the default object */
3480 if(!(es->style & ES_MULTILINE) || !(es->style & ES_WANTRETURN))
3481 {
3482 DWORD dw;
3483
3484 if (!EDIT_IsInsideDialog(es)) break;
3485 if (control) break;
3486 dw = SendMessageW(es->hwndParent, DM_GETDEFID, 0, 0);
3487 if (HIWORD(dw) == DC_HASDEFID)
3488 {
3489 HWND hwDefCtrl = GetDlgItem(es->hwndParent, LOWORD(dw));
3490 if (hwDefCtrl)
3491 {
3492 SendMessageW(es->hwndParent, WM_NEXTDLGCTL, (WPARAM)hwDefCtrl, TRUE);
3493 PostMessageW(hwDefCtrl, WM_KEYDOWN, VK_RETURN, 0);
3494 }
3495 }
3496 }
3497 break;
3498 case VK_ESCAPE:
3499 if ((es->style & ES_MULTILINE) && EDIT_IsInsideDialog(es))
3500 PostMessageW(es->hwndParent, WM_CLOSE, 0, 0);
3501 break;
3502 case VK_TAB:
3503 if ((es->style & ES_MULTILINE) && EDIT_IsInsideDialog(es))
3504 SendMessageW(es->hwndParent, WM_NEXTDLGCTL, shift, 0);
3505 break;
3506 }
3507 return TRUE;
3508 }
3509
3510
3511 /*********************************************************************
3512 *
3513 * WM_KILLFOCUS
3514 *
3515 */
3516 static LRESULT EDIT_WM_KillFocus(EDITSTATE *es)
3517 {
3518 es->flags &= ~EF_FOCUSED;
3519 DestroyCaret();
3520 if(!(es->style & ES_NOHIDESEL))
3521 EDIT_InvalidateText(es, es->selection_start, es->selection_end);
3522 EDIT_NOTIFY_PARENT(es, EN_KILLFOCUS);
3523 return 0;
3524 }
3525
3526
3527 /*********************************************************************
3528 *
3529 * WM_LBUTTONDBLCLK
3530 *
3531 * The caret position has been set on the WM_LBUTTONDOWN message
3532 *
3533 */
3534 static LRESULT EDIT_WM_LButtonDblClk(EDITSTATE *es)
3535 {
3536 INT s;
3537 INT e = es->selection_end;
3538 INT l;
3539 INT li;
3540 INT ll;
3541
3542 es->bCaptureState = TRUE;
3543 SetCapture(es->hwndSelf);
3544
3545 l = EDIT_EM_LineFromChar(es, e);
3546 li = EDIT_EM_LineIndex(es, l);
3547 ll = EDIT_EM_LineLength(es, e);
3548 s = li + EDIT_CallWordBreakProc(es, li, e - li, ll, WB_LEFT);
3549 e = li + EDIT_CallWordBreakProc(es, li, e - li, ll, WB_RIGHT);
3550 EDIT_EM_SetSel(es, s, e, FALSE);
3551 EDIT_EM_ScrollCaret(es);
3552 es->region_posx = es->region_posy = 0;
3553 SetTimer(es->hwndSelf, 0, 100, NULL);
3554 return 0;
3555 }
3556
3557
3558 /*********************************************************************
3559 *
3560 * WM_LBUTTONDOWN
3561 *
3562 */
3563 static LRESULT EDIT_WM_LButtonDown(EDITSTATE *es, DWORD keys, INT x, INT y)
3564 {
3565 INT e;
3566 BOOL after_wrap;
3567
3568 es->bCaptureState = TRUE;
3569 SetCapture(es->hwndSelf);
3570 EDIT_ConfinePoint(es, &x, &y);
3571 e = EDIT_CharFromPos(es, x, y, &after_wrap);
3572 EDIT_EM_SetSel(es, (keys & MK_SHIFT) ? es->selection_start : e, e, after_wrap);
3573 EDIT_EM_ScrollCaret(es);
3574 es->region_posx = es->region_posy = 0;
3575 SetTimer(es->hwndSelf, 0, 100, NULL);
3576
3577 if (!(es->flags & EF_FOCUSED))
3578 SetFocus(es->hwndSelf);
3579
3580 return 0;
3581 }
3582
3583
3584 /*********************************************************************
3585 *
3586 * WM_LBUTTONUP
3587 *
3588 */
3589 static LRESULT EDIT_WM_LButtonUp(EDITSTATE *es)
3590 {
3591 if (es->bCaptureState) {
3592 KillTimer(es->hwndSelf, 0);
3593 if (GetCapture() == es->hwndSelf) ReleaseCapture();
3594 }
3595 es->bCaptureState = FALSE;
3596 return 0;
3597 }
3598
3599
3600 /*********************************************************************
3601 *
3602 * WM_MBUTTONDOWN
3603 *
3604 */
3605 static LRESULT EDIT_WM_MButtonDown(EDITSTATE *es)
3606 {
3607 SendMessageW(es->hwndSelf, WM_PASTE, 0, 0);
3608 return 0;
3609 }
3610
3611
3612 /*********************************************************************
3613 *
3614 * WM_MOUSEMOVE
3615 *
3616 */
3617 static LRESULT EDIT_WM_MouseMove(EDITSTATE *es, INT x, INT y)
3618 {
3619 INT e;
3620 BOOL after_wrap;
3621 INT prex, prey;
3622
3623 /* If the mouse has been captured by process other than the edit control itself,
3624 * the windows edit controls will not select the strings with mouse move.
3625 */
3626 if (!es->bCaptureState || GetCapture() != es->hwndSelf)
3627 return 0;
3628
3629 /*
3630 * FIXME: gotta do some scrolling if outside client
3631 * area. Maybe reset the timer ?
3632 */
3633 prex = x; prey = y;
3634 EDIT_ConfinePoint(es, &x, &y);
3635 es->region_posx = (prex < x) ? -1 : ((prex > x) ? 1 : 0);
3636 es->region_posy = (prey < y) ? -1 : ((prey > y) ? 1 : 0);
3637 e = EDIT_CharFromPos(es, x, y, &after_wrap);
3638 EDIT_EM_SetSel(es, es->selection_start, e, after_wrap);
3639 EDIT_SetCaretPos(es,es->selection_end,es->flags & EF_AFTER_WRAP);
3640 return 0;
3641 }
3642
3643
3644 /*********************************************************************
3645 *
3646 * WM_PAINT
3647 *
3648 */
3649 static void EDIT_WM_Paint(EDITSTATE *es, HDC hdc)
3650 {
3651 PAINTSTRUCT ps;
3652 INT i;
3653 HDC dc;
3654 HFONT old_font = 0;
3655 RECT rc;
3656 RECT rcClient;
3657 RECT rcLine;
3658 RECT rcRgn;
3659 HBRUSH brush;
3660 HBRUSH old_brush;
3661 INT bw, bh;
3662 BOOL rev = es->bEnableState &&
3663 ((es->flags & EF_FOCUSED) ||
3664 (es->style & ES_NOHIDESEL));
3665 dc = hdc ? hdc : BeginPaint(es->hwndSelf, &ps);
3666
3667 /* The dc we use for calculating may not be the one we paint into.
3668 This is the safest action. */
3669 EDIT_InvalidateUniscribeData(es);
3670 GetClientRect(es->hwndSelf, &rcClient);
3671
3672 /* get the background brush */
3673 brush = EDIT_NotifyCtlColor(es, dc);
3674
3675 /* paint the border and the background */
3676 IntersectClipRect(dc, rcClient.left, rcClient.top, rcClient.right, rcClient.bottom);
3677
3678 if(es->style & WS_BORDER) {
3679 bw = GetSystemMetrics(SM_CXBORDER);
3680 bh = GetSystemMetrics(SM_CYBORDER);
3681 rc = rcClient;
3682 if(es->style & ES_MULTILINE) {
3683 if(es->style & WS_HSCROLL) rc.bottom+=bh;
3684 if(es->style & WS_VSCROLL) rc.right+=bw;
3685 }
3686
3687 /* Draw the frame. Same code as in nonclient.c */
3688 old_brush = SelectObject(dc, GetSysColorBrush(COLOR_WINDOWFRAME));
3689 PatBlt(dc, rc.left, rc.top, rc.right - rc.left, bh, PATCOPY);
3690 PatBlt(dc, rc.left, rc.top, bw, rc.bottom - rc.top, PATCOPY);
3691 PatBlt(dc, rc.left, rc.bottom - 1, rc.right - rc.left, -bw, PATCOPY);
3692 PatBlt(dc, rc.right - 1, rc.top, -bw, rc.bottom - rc.top, PATCOPY);
3693 SelectObject(dc, old_brush);
3694
3695 /* Keep the border clean */
3696 IntersectClipRect(dc, rc.left+bw, rc.top+bh,
3697 max(rc.right-bw, rc.left+bw), max(rc.bottom-bh, rc.top+bh));
3698 }
3699
3700 GetClipBox(dc, &rc);
3701 FillRect(dc, &rc, brush);
3702
3703 IntersectClipRect(dc, es->format_rect.left,
3704 es->format_rect.top,
3705 es->format_rect.right,
3706 es->format_rect.bottom);
3707 if (es->style & ES_MULTILINE) {
3708 rc = rcClient;
3709 IntersectClipRect(dc, rc.left, rc.top, rc.right, rc.bottom);
3710 }
3711 if (es->font)
3712 old_font = SelectObject(dc, es->font);
3713
3714 if (!es->bEnableState)
3715 SetTextColor(dc, GetSysColor(COLOR_GRAYTEXT));
3716 GetClipBox(dc, &rcRgn);
3717 if (es->style & ES_MULTILINE) {
3718 INT vlc = get_vertical_line_count(es);
3719 for (i = es->y_offset ; i <= min(es->y_offset + vlc, es->y_offset + es->line_count - 1) ; i++) {
3720 EDIT_UpdateUniscribeData(es, dc, i);
3721 EDIT_GetLineRect(es, i, 0, -1, &rcLine);
3722 if (IntersectRect(&rc, &rcRgn, &rcLine))
3723 EDIT_PaintLine(es, dc, i, rev);
3724 }
3725 } else {
3726 EDIT_UpdateUniscribeData(es, dc, 0);
3727 EDIT_GetLineRect(es, 0, 0, -1, &rcLine);
3728 if (IntersectRect(&rc, &rcRgn, &rcLine))
3729 EDIT_PaintLine(es, dc, 0, rev);
3730 }
3731 if (es->font)
3732 SelectObject(dc, old_font);
3733
3734 if (!hdc)
3735 EndPaint(es->hwndSelf, &ps);
3736 }
3737
3738
3739 /*********************************************************************
3740 *
3741 * WM_SETFOCUS
3742 *
3743 */
3744 static void EDIT_WM_SetFocus(EDITSTATE *es)
3745 {
3746 es->flags |= EF_FOCUSED;
3747
3748 if (!(es->style & ES_NOHIDESEL))
3749 EDIT_InvalidateText(es, es->selection_start, es->selection_end);
3750
3751 /* single line edit updates itself */
3752 if (!(es->style & ES_MULTILINE))
3753 {
3754 HDC hdc = GetDC(es->hwndSelf);
3755 EDIT_WM_Paint(es, hdc);
3756 ReleaseDC(es->hwndSelf, hdc);
3757 }
3758
3759 CreateCaret(es->hwndSelf, 0, 1, es->line_height);
3760 EDIT_SetCaretPos(es, es->selection_end,
3761 es->flags & EF_AFTER_WRAP);
3762 ShowCaret(es->hwndSelf);
3763 EDIT_NOTIFY_PARENT(es, EN_SETFOCUS);
3764 }
3765
3766
3767 /*********************************************************************
3768 *
3769 * WM_SETFONT
3770 *
3771 * With Win95 look the margins are set to default font value unless
3772 * the system font (font == 0) is being set, in which case they are left
3773 * unchanged.
3774 *
3775 */
3776 static void EDIT_WM_SetFont(EDITSTATE *es, HFONT font, BOOL redraw)
3777 {
3778 TEXTMETRICW tm;
3779 HDC dc;
3780 HFONT old_font = 0;
3781 RECT clientRect;
3782
3783 es->font = font;
3784 EDIT_InvalidateUniscribeData(es);
3785 dc = GetDC(es->hwndSelf);
3786 if (font)
3787 old_font = SelectObject(dc, font);
3788 GetTextMetricsW(dc, &tm);
3789 es->line_height = tm.tmHeight;
3790 es->char_width = tm.tmAveCharWidth;
3791 if (font)
3792 SelectObject(dc, old_font);
3793 ReleaseDC(es->hwndSelf, dc);
3794
3795 /* Reset the format rect and the margins */
3796 GetClientRect(es->hwndSelf, &clientRect);
3797 EDIT_SetRectNP(es, &clientRect);
3798 EDIT_EM_SetMargins(es, EC_LEFTMARGIN | EC_RIGHTMARGIN,
3799 EC_USEFONTINFO, EC_USEFONTINFO, FALSE);
3800
3801 if (es->style & ES_MULTILINE)
3802 EDIT_BuildLineDefs_ML(es, 0, get_text_length(es), 0, NULL);
3803 else
3804 EDIT_CalcLineWidth_SL(es);
3805
3806 if (redraw)
3807 EDIT_UpdateText(es, NULL, TRUE);
3808 if (es->flags & EF_FOCUSED) {
3809 DestroyCaret();
3810 CreateCaret(es->hwndSelf, 0, 1, es->line_height);
3811 EDIT_SetCaretPos(es, es->selection_end,
3812 es->flags & EF_AFTER_WRAP);
3813 ShowCaret(es->hwndSelf);
3814 }
3815 }
3816
3817
3818 /*********************************************************************
3819 *
3820 * WM_SETTEXT
3821 *
3822 * NOTES
3823 * For multiline controls (ES_MULTILINE), reception of WM_SETTEXT triggers:
3824 * The modified flag is reset. No notifications are sent.
3825 *
3826 * For single-line controls, reception of WM_SETTEXT triggers:
3827 * The modified flag is reset. EN_UPDATE and EN_CHANGE notifications are sent.
3828 *
3829 */
3830 static void EDIT_WM_SetText(EDITSTATE *es, LPCWSTR text, BOOL unicode)
3831 {
3832 LPWSTR textW = NULL;
3833 if (!unicode && text)
3834 {
3835 LPCSTR textA = (LPCSTR)text;
3836 INT countW = MultiByteToWideChar(CP_ACP, 0, textA, -1, NULL, 0);
3837 textW = HeapAlloc(GetProcessHeap(), 0, countW * sizeof(WCHAR));
3838 if (textW)
3839 MultiByteToWideChar(CP_ACP, 0, textA, -1, textW, countW);
3840 text = textW;
3841 }
3842
3843 if (es->flags & EF_UPDATE)
3844 /* fixed this bug once; complain if we see it about to happen again. */
3845 ERR("SetSel may generate UPDATE message whose handler may reset "
3846 "selection.\n");
3847
3848 EDIT_EM_SetSel(es, 0, (UINT)-1, FALSE);
3849 if (text)
3850 {
3851 TRACE("%s\n", debugstr_w(text));
3852 EDIT_EM_ReplaceSel(es, FALSE, text, FALSE, FALSE);
3853 if(!unicode)
3854 HeapFree(GetProcessHeap(), 0, textW);
3855 }
3856 else
3857 {
3858 TRACE("<NULL>\n");
3859 EDIT_EM_ReplaceSel(es, FALSE, empty_stringW, FALSE, FALSE);
3860 }
3861 es->x_offset = 0;
3862 es->flags &= ~EF_MODIFIED;
3863 EDIT_EM_SetSel(es, 0, 0, FALSE);
3864
3865 /* Send the notification after the selection start and end have been set
3866 * edit control doesn't send notification on WM_SETTEXT
3867 * if it is multiline, or it is part of combobox
3868 */
3869 if( !((es->style & ES_MULTILINE) || es->hwndListBox))
3870 {
3871 EDIT_NOTIFY_PARENT(es, EN_UPDATE);
3872 EDIT_NOTIFY_PARENT(es, EN_CHANGE);
3873 }
3874 EDIT_EM_ScrollCaret(es);
3875 EDIT_UpdateScrollInfo(es);
3876 EDIT_InvalidateUniscribeData(es);
3877 }
3878
3879
3880 /*********************************************************************
3881 *
3882 * WM_SIZE
3883 *
3884 */
3885 static void EDIT_WM_Size(EDITSTATE *es, UINT action, INT width, INT height)
3886 {
3887 if ((action == SIZE_MAXIMIZED) || (action == SIZE_RESTORED)) {
3888 RECT rc;
3889 TRACE("width = %d, height = %d\n", width, height);
3890 SetRect(&rc, 0, 0, width, height);
3891 EDIT_SetRectNP(es, &rc);
3892 EDIT_UpdateText(es, NULL, TRUE);
3893 }
3894 }
3895
3896
3897 /*********************************************************************
3898 *
3899 * WM_STYLECHANGED
3900 *
3901 * This message is sent by SetWindowLong on having changed either the Style
3902 * or the extended style.
3903 *
3904 * We ensure that the window's version of the styles and the EDITSTATE's agree.
3905 *
3906 * See also EDIT_WM_NCCreate
3907 *
3908 * It appears that the Windows version of the edit control allows the style
3909 * (as retrieved by GetWindowLong) to be any value and maintains an internal
3910 * style variable which will generally be different. In this function we
3911 * update the internal style based on what changed in the externally visible
3912 * style.
3913 *
3914 * Much of this content as based upon the MSDN, especially:
3915 * Platform SDK Documentation -> User Interface Services ->
3916 * Windows User Interface -> Edit Controls -> Edit Control Reference ->
3917 * Edit Control Styles
3918 */
3919 static LRESULT EDIT_WM_StyleChanged ( EDITSTATE *es, WPARAM which, const STYLESTRUCT *style)
3920 {
3921 if (GWL_STYLE == which) {
3922 DWORD style_change_mask;
3923 DWORD new_style;
3924 /* Only a subset of changes can be applied after the control
3925 * has been created.
3926 */
3927 style_change_mask = ES_UPPERCASE | ES_LOWERCASE |
3928 ES_NUMBER;
3929 if (es->style & ES_MULTILINE)
3930 style_change_mask |= ES_WANTRETURN;
3931
3932 new_style = style->styleNew & style_change_mask;
3933
3934 /* Number overrides lowercase overrides uppercase (at least it
3935 * does in Win95). However I'll bet that ES_NUMBER would be
3936 * invalid under Win 3.1.
3937 */
3938 if (new_style & ES_NUMBER) {
3939 ; /* do not override the ES_NUMBER */
3940 } else if (new_style & ES_LOWERCASE) {
3941 new_style &= ~ES_UPPERCASE;
3942 }
3943
3944 es->style = (es->style & ~style_change_mask) | new_style;
3945 } else if (GWL_EXSTYLE == which) {
3946 ; /* FIXME - what is needed here */
3947 } else {
3948 WARN ("Invalid style change %ld\n",which);
3949 }
3950
3951 return 0;
3952 }
3953
3954 /*********************************************************************
3955 *
3956 * WM_SYSKEYDOWN
3957 *
3958 */
3959 static LRESULT EDIT_WM_SysKeyDown(EDITSTATE *es, INT key, DWORD key_data)
3960 {
3961 if ((key == VK_BACK) && (key_data & 0x2000)) {
3962 if (EDIT_EM_CanUndo(es))
3963 EDIT_EM_Undo(es);
3964 return 0;
3965 } else if (key == VK_UP || key == VK_DOWN) {
3966 if (EDIT_CheckCombo(es, WM_SYSKEYDOWN, key))
3967 return 0;
3968 }
3969 return DefWindowProcW(es->hwndSelf, WM_SYSKEYDOWN, key, key_data);
3970 }
3971
3972
3973 /*********************************************************************
3974 *
3975 * WM_TIMER
3976 *
3977 */
3978 static void EDIT_WM_Timer(EDITSTATE *es)
3979 {
3980 if (es->region_posx < 0) {
3981 EDIT_MoveBackward(es, TRUE);
3982 } else if (es->region_posx > 0) {
3983 EDIT_MoveForward(es, TRUE);
3984 }
3985 /*
3986 * FIXME: gotta do some vertical scrolling here, like
3987 * EDIT_EM_LineScroll(hwnd, 0, 1);
3988 */
3989 }
3990
3991 /*********************************************************************
3992 *
3993 * WM_HSCROLL
3994 *
3995 */
3996 static LRESULT EDIT_WM_HScroll(EDITSTATE *es, INT action, INT pos)
3997 {
3998 INT dx;
3999 INT fw;
4000
4001 if (!(es->style & ES_MULTILINE))
4002 return 0;
4003
4004 if (!(es->style & ES_AUTOHSCROLL))
4005 return 0;
4006
4007 dx = 0;
4008 fw = es->format_rect.right - es->format_rect.left;
4009 switch (action) {
4010 case SB_LINELEFT:
4011 TRACE("SB_LINELEFT\n");
4012 if (es->x_offset)
4013 dx = -es->char_width;
4014 break;
4015 case SB_LINERIGHT:
4016 TRACE("SB_LINERIGHT\n");
4017 if (es->x_offset < es->text_width)
4018 dx = es->char_width;
4019 break;
4020 case SB_PAGELEFT:
4021 TRACE("SB_PAGELEFT\n");
4022 if (es->x_offset)
4023 dx = -fw / HSCROLL_FRACTION / es->char_width * es->char_width;
4024 break;
4025 case SB_PAGERIGHT:
4026 TRACE("SB_PAGERIGHT\n");
4027 if (es->x_offset < es->text_width)
4028 dx = fw / HSCROLL_FRACTION / es->char_width * es->char_width;
4029 break;
4030 case SB_LEFT:
4031 TRACE("SB_LEFT\n");
4032 if (es->x_offset)
4033 dx = -es->x_offset;
4034 break;
4035 case SB_RIGHT:
4036 TRACE("SB_RIGHT\n");
4037 if (es->x_offset < es->text_width)
4038 dx = es->text_width - es->x_offset;
4039 break;
4040 case SB_THUMBTRACK:
4041 TRACE("SB_THUMBTRACK %d\n", pos);
4042 es->flags |= EF_HSCROLL_TRACK;
4043 if(es->style & WS_HSCROLL)
4044 dx = pos - es->x_offset;
4045 else
4046 {
4047 INT fw, new_x;
4048 /* Sanity check */
4049 if(pos < 0 || pos > 100) return 0;
4050 /* Assume default scroll range 0-100 */
4051 fw = es->format_rect.right - es->format_rect.left;
4052 new_x = pos * (es->text_width - fw) / 100;
4053 dx = es->text_width ? (new_x - es->x_offset) : 0;
4054 }
4055 break;
4056 case SB_THUMBPOSITION:
4057 TRACE("SB_THUMBPOSITION %d\n", pos);
4058 es->flags &= ~EF_HSCROLL_TRACK;
4059 if(GetWindowLongW( es->hwndSelf, GWL_STYLE ) & WS_HSCROLL)
4060 dx = pos - es->x_offset;
4061 else
4062 {
4063 INT fw, new_x;
4064 /* Sanity check */
4065 if(pos < 0 || pos > 100) return 0;
4066 /* Assume default scroll range 0-100 */
4067 fw = es->format_rect.right - es->format_rect.left;
4068 new_x = pos * (es->text_width - fw) / 100;
4069 dx = es->text_width ? (new_x - es->x_offset) : 0;
4070 }
4071 if (!dx) {
4072 /* force scroll info update */
4073 EDIT_UpdateScrollInfo(es);
4074 EDIT_NOTIFY_PARENT(es, EN_HSCROLL);
4075 }
4076 break;
4077 case SB_ENDSCROLL:
4078 TRACE("SB_ENDSCROLL\n");
4079 break;
4080 /*
4081 * FIXME : the next two are undocumented !
4082 * Are we doing the right thing ?
4083 * At least Win 3.1 Notepad makes use of EM_GETTHUMB this way,
4084 * although it's also a regular control message.
4085 */
4086 case EM_GETTHUMB: /* this one is used by NT notepad */
4087 {
4088 LRESULT ret;
4089 if(GetWindowLongW( es->hwndSelf, GWL_STYLE ) & WS_HSCROLL)
4090 ret = GetScrollPos(es->hwndSelf, SB_HORZ);
4091 else
4092 {
4093 /* Assume default scroll range 0-100 */
4094 INT fw = es->format_rect.right - es->format_rect.left;
4095 ret = es->text_width ? es->x_offset * 100 / (es->text_width - fw) : 0;
4096 }
4097 TRACE("EM_GETTHUMB: returning %ld\n", ret);
4098 return ret;
4099 }
4100 case EM_LINESCROLL:
4101 TRACE("EM_LINESCROLL16\n");
4102 dx = pos;
4103 break;
4104
4105 default:
4106 ERR("undocumented WM_HSCROLL action %d (0x%04x), please report\n",
4107 action, action);
4108 return 0;
4109 }
4110 if (dx)
4111 {
4112 INT fw = es->format_rect.right - es->format_rect.left;
4113 /* check if we are going to move too far */
4114 if(es->x_offset + dx + fw > es->text_width)
4115 dx = es->text_width - fw - es->x_offset;
4116 if(dx)
4117 EDIT_EM_LineScroll_internal(es, dx, 0);
4118 }
4119 return 0;
4120 }
4121
4122
4123 /*********************************************************************
4124 *
4125 * WM_VSCROLL
4126 *
4127 */
4128 static LRESULT EDIT_WM_VScroll(EDITSTATE *es, INT action, INT pos)
4129 {
4130 INT dy;
4131
4132 if (!(es->style & ES_MULTILINE))
4133 return 0;
4134
4135 if (!(es->style & ES_AUTOVSCROLL))
4136 return 0;
4137
4138 dy = 0;
4139 switch (action) {
4140 case SB_LINEUP:
4141 case SB_LINEDOWN:
4142 case SB_PAGEUP:
4143 case SB_PAGEDOWN:
4144 TRACE("action %d (%s)\n", action, (action == SB_LINEUP ? "SB_LINEUP" :
4145 (action == SB_LINEDOWN ? "SB_LINEDOWN" :
4146 (action == SB_PAGEUP ? "SB_PAGEUP" :
4147 "SB_PAGEDOWN"))));
4148 EDIT_EM_Scroll(es, action);
4149 return 0;
4150 case SB_TOP:
4151 TRACE("SB_TOP\n");
4152 dy = -es->y_offset;
4153 break;
4154 case SB_BOTTOM:
4155 TRACE("SB_BOTTOM\n");
4156 dy = es->line_count - 1 - es->y_offset;
4157 break;
4158 case SB_THUMBTRACK:
4159 TRACE("SB_THUMBTRACK %d\n", pos);
4160 es->flags |= EF_VSCROLL_TRACK;
4161 if(es->style & WS_VSCROLL)
4162 dy = pos - es->y_offset;
4163 else
4164 {
4165 /* Assume default scroll range 0-100 */
4166 INT vlc, new_y;
4167 /* Sanity check */
4168 if(pos < 0 || pos > 100) return 0;
4169 vlc = get_vertical_line_count(es);
4170 new_y = pos * (es->line_count - vlc) / 100;
4171 dy = es->line_count ? (new_y - es->y_offset) : 0;
4172 TRACE("line_count=%d, y_offset=%d, pos=%d, dy = %d\n",
4173 es->line_count, es->y_offset, pos, dy);
4174 }
4175 break;
4176 case SB_THUMBPOSITION:
4177 TRACE("SB_THUMBPOSITION %d\n", pos);
4178 es->flags &= ~EF_VSCROLL_TRACK;
4179 if(es->style & WS_VSCROLL)
4180 dy = pos - es->y_offset;
4181 else
4182 {
4183 /* Assume default scroll range 0-100 */
4184 INT vlc, new_y;
4185 /* Sanity check */
4186 if(pos < 0 || pos > 100) return 0;
4187 vlc = get_vertical_line_count(es);
4188 new_y = pos * (es->line_count - vlc) / 100;
4189 dy = es->line_count ? (new_y - es->y_offset) : 0;
4190 TRACE("line_count=%d, y_offset=%d, pos=%d, dy = %d\n",
4191 es->line_count, es->y_offset, pos, dy);
4192 }
4193 if (!dy)
4194 {
4195 /* force scroll info update */
4196 EDIT_UpdateScrollInfo(es);
4197 EDIT_NOTIFY_PARENT(es, EN_VSCROLL);
4198 }
4199 break;
4200 case SB_ENDSCROLL:
4201 TRACE("SB_ENDSCROLL\n");
4202 break;
4203 /*
4204 * FIXME : the next two are undocumented !
4205 * Are we doing the right thing ?
4206 * At least Win 3.1 Notepad makes use of EM_GETTHUMB this way,
4207 * although it's also a regular control message.
4208 */
4209 case EM_GETTHUMB: /* this one is used by NT notepad */
4210 {
4211 LRESULT ret;
4212 if(GetWindowLongW( es->hwndSelf, GWL_STYLE ) & WS_VSCROLL)
4213 ret = GetScrollPos(es->hwndSelf, SB_VERT);
4214 else
4215 {
4216 /* Assume default scroll range 0-100 */
4217 INT vlc = get_vertical_line_count(es);
4218 ret = es->line_count ? es->y_offset * 100 / (es->line_count - vlc) : 0;
4219 }
4220 TRACE("EM_GETTHUMB: returning %ld\n", ret);
4221 return ret;
4222 }
4223 case EM_LINESCROLL:
4224 TRACE("EM_LINESCROLL %d\n", pos);
4225 dy = pos;
4226 break;
4227
4228 default:
4229 ERR("undocumented WM_VSCROLL action %d (0x%04x), please report\n",
4230 action, action);
4231 return 0;
4232 }
4233 if (dy)
4234 EDIT_EM_LineScroll(es, 0, dy);
4235 return 0;
4236 }
4237
4238 /*********************************************************************
4239 *
4240 * EM_GETTHUMB
4241 *
4242 * FIXME: is this right ? (or should it be only VSCROLL)
4243 * (and maybe only for edit controls that really have their
4244 * own scrollbars) (and maybe only for multiline controls ?)
4245 * All in all: very poorly documented
4246 *
4247 */
4248 static LRESULT EDIT_EM_GetThumb(EDITSTATE *es)
4249 {
4250 return MAKELONG(EDIT_WM_VScroll(es, EM_GETTHUMB, 0),
4251 EDIT_WM_HScroll(es, EM_GETTHUMB, 0));
4252 }
4253
4254
4255 /********************************************************************
4256 *
4257 * The Following code is to handle inline editing from IMEs
4258 */
4259
4260 static void EDIT_GetCompositionStr(HIMC hIMC, LPARAM CompFlag, EDITSTATE *es)
4261 {
4262 LONG buflen;
4263 LPWSTR lpCompStr = NULL;
4264 LPSTR lpCompStrAttr = NULL;
4265 DWORD dwBufLenAttr;
4266
4267 buflen = ImmGetCompositionStringW(hIMC, GCS_COMPSTR, NULL, 0);
4268
4269 if (buflen < 0)
4270 {
4271 return;
4272 }
4273
4274 lpCompStr = HeapAlloc(GetProcessHeap(),0,buflen + sizeof(WCHAR));
4275 if (!lpCompStr)
4276 {
4277 ERR("Unable to allocate IME CompositionString\n");
4278 return;
4279 }
4280
4281 if (buflen)
4282 ImmGetCompositionStringW(hIMC, GCS_COMPSTR, lpCompStr, buflen);
4283 lpCompStr[buflen/sizeof(WCHAR)] = 0;
4284
4285 if (CompFlag & GCS_COMPATTR)
4286 {
4287 /*
4288 * We do not use the attributes yet. it would tell us what characters
4289 * are in transition and which are converted or decided upon
4290 */
4291 dwBufLenAttr = ImmGetCompositionStringW(hIMC, GCS_COMPATTR, NULL, 0);
4292 if (dwBufLenAttr)
4293 {
4294 dwBufLenAttr ++;
4295 lpCompStrAttr = HeapAlloc(GetProcessHeap(),0,dwBufLenAttr+1);
4296 if (!lpCompStrAttr)
4297 {
4298 ERR("Unable to allocate IME Attribute String\n");
4299 HeapFree(GetProcessHeap(),0,lpCompStr);
4300 return;
4301 }
4302 ImmGetCompositionStringW(hIMC,GCS_COMPATTR, lpCompStrAttr,
4303 dwBufLenAttr);
4304 lpCompStrAttr[dwBufLenAttr] = 0;
4305 }
4306 else
4307 lpCompStrAttr = NULL;
4308 }
4309
4310 /* check for change in composition start */
4311 if (es->selection_end < es->composition_start)
4312 es->composition_start = es->selection_end;
4313
4314 /* replace existing selection string */
4315 es->selection_start = es->composition_start;
4316
4317 if (es->composition_len > 0)
4318 es->selection_end = es->composition_start + es->composition_len;
4319 else
4320 es->selection_end = es->selection_start;
4321
4322 EDIT_EM_ReplaceSel(es, FALSE, lpCompStr, TRUE, TRUE);
4323 es->composition_len = abs(es->composition_start - es->selection_end);
4324
4325 es->selection_start = es->composition_start;
4326 es->selection_end = es->selection_start + es->composition_len;
4327
4328 HeapFree(GetProcessHeap(),0,lpCompStrAttr);
4329 HeapFree(GetProcessHeap(),0,lpCompStr);
4330 }
4331
4332 static void EDIT_GetResultStr(HIMC hIMC, EDITSTATE *es)
4333 {
4334 LONG buflen;
4335 LPWSTR lpResultStr;
4336
4337 buflen = ImmGetCompositionStringW(hIMC, GCS_RESULTSTR, NULL, 0);
4338 if (buflen <= 0)
4339 {
4340 return;
4341 }
4342
4343 lpResultStr = HeapAlloc(GetProcessHeap(),0, buflen+sizeof(WCHAR));
4344 if (!lpResultStr)
4345 {
4346 ERR("Unable to alloc buffer for IME string\n");
4347 return;
4348 }
4349
4350 ImmGetCompositionStringW(hIMC, GCS_RESULTSTR, lpResultStr, buflen);
4351 lpResultStr[buflen/sizeof(WCHAR)] = 0;
4352
4353 /* check for change in composition start */
4354 if (es->selection_end < es->composition_start)
4355 es->composition_start = es->selection_end;
4356
4357 es->selection_start = es->composition_start;
4358 es->selection_end = es->composition_start + es->composition_len;
4359 EDIT_EM_ReplaceSel(es, TRUE, lpResultStr, TRUE, TRUE);
4360 es->composition_start = es->selection_end;
4361 es->composition_len = 0;
4362
4363 HeapFree(GetProcessHeap(),0,lpResultStr);
4364 }
4365
4366 static void EDIT_ImeComposition(HWND hwnd, LPARAM CompFlag, EDITSTATE *es)
4367 {
4368 HIMC hIMC;
4369 int cursor;
4370
4371 if (es->composition_len == 0 && es->selection_start != es->selection_end)
4372 {
4373 EDIT_EM_ReplaceSel(es, TRUE, empty_stringW, TRUE, TRUE);
4374 es->composition_start = es->selection_end;
4375 }
4376
4377 hIMC = ImmGetContext(hwnd);
4378 if (!hIMC)
4379 return;
4380
4381 if (CompFlag & GCS_RESULTSTR)
4382 EDIT_GetResultStr(hIMC, es);
4383 if (CompFlag & GCS_COMPSTR)
4384 EDIT_GetCompositionStr(hIMC, CompFlag, es);
4385 cursor = ImmGetCompositionStringW(hIMC, GCS_CURSORPOS, 0, 0);
4386 ImmReleaseContext(hwnd, hIMC);
4387 EDIT_SetCaretPos(es, es->selection_start + cursor, es->flags & EF_AFTER_WRAP);
4388 }
4389
4390
4391 /*********************************************************************
4392 *
4393 * WM_NCCREATE
4394 *
4395 * See also EDIT_WM_StyleChanged
4396 */
4397 static LRESULT EDIT_WM_NCCreate(HWND hwnd, LPCREATESTRUCTW lpcs, BOOL unicode)
4398 {
4399 EDITSTATE *es;
4400 UINT alloc_size;
4401
4402 TRACE("Creating %s edit control, style = %08x\n",
4403 unicode ? "Unicode" : "ANSI", lpcs->style);
4404
4405 if (!(es = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, sizeof(*es))))
4406 return FALSE;
4407 SetWindowLongPtrW( hwnd, 0, (LONG_PTR)es );
4408
4409 /*
4410 * Note: since the EDITSTATE has not been fully initialized yet,
4411 * we can't use any API calls that may send
4412 * WM_XXX messages before WM_NCCREATE is completed.
4413 */
4414
4415 es->is_unicode = unicode;
4416 es->style = lpcs->style;
4417
4418 es->bEnableState = !(es->style & WS_DISABLED);
4419
4420 es->hwndSelf = hwnd;
4421 /* Save parent, which will be notified by EN_* messages */
4422 es->hwndParent = lpcs->hwndParent;
4423
4424 if (es->style & ES_COMBO)
4425 es->hwndListBox = GetDlgItem(es->hwndParent, ID_CB_LISTBOX);
4426
4427 /* FIXME: should we handle changes to WS_EX_RIGHT style after creation? */
4428 if (lpcs->dwExStyle & WS_EX_RIGHT) es->style |= ES_RIGHT;
4429
4430 /* Number overrides lowercase overrides uppercase (at least it
4431 * does in Win95). However I'll bet that ES_NUMBER would be
4432 * invalid under Win 3.1.
4433 */
4434 if (es->style & ES_NUMBER) {
4435 ; /* do not override the ES_NUMBER */
4436 } else if (es->style & ES_LOWERCASE) {
4437 es->style &= ~ES_UPPERCASE;
4438 }
4439 if (es->style & ES_MULTILINE) {
4440 es->buffer_limit = BUFLIMIT_INITIAL;
4441 if (es->style & WS_VSCROLL)
4442 es->style |= ES_AUTOVSCROLL;
4443 if (es->style & WS_HSCROLL)
4444 es->style |= ES_AUTOHSCROLL;
4445 es->style &= ~ES_PASSWORD;
4446 if ((es->style & ES_CENTER) || (es->style & ES_RIGHT)) {
4447 /* Confirmed - RIGHT overrides CENTER */
4448 if (es->style & ES_RIGHT)
4449 es->style &= ~ES_CENTER;
4450 es->style &= ~WS_HSCROLL;
4451 es->style &= ~ES_AUTOHSCROLL;
4452 }
4453 } else {
4454 es->buffer_limit = BUFLIMIT_INITIAL;
4455 if ((es->style & ES_RIGHT) && (es->style & ES_CENTER))
4456 es->style &= ~ES_CENTER;
4457 es->style &= ~WS_HSCROLL;
4458 es->style &= ~WS_VSCROLL;
4459 if (es->style & ES_PASSWORD)
4460 es->password_char = '*';
4461 }
4462
4463 alloc_size = ROUND_TO_GROW((es->buffer_size + 1) * sizeof(WCHAR));
4464 if(!(es->hloc32W = LocalAlloc(LMEM_MOVEABLE | LMEM_ZEROINIT, alloc_size)))
4465 goto cleanup;
4466 es->buffer_size = LocalSize(es->hloc32W)/sizeof(WCHAR) - 1;
4467
4468 if (!(es->undo_text = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, (es->buffer_size + 1) * sizeof(WCHAR))))
4469 goto cleanup;
4470 es->undo_buffer_size = es->buffer_size;
4471
4472 if (es->style & ES_MULTILINE)
4473 if (!(es->first_line_def = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, sizeof(LINEDEF))))
4474 goto cleanup;
4475 es->line_count = 1;
4476
4477 /*
4478 * In Win95 look and feel, the WS_BORDER style is replaced by the
4479 * WS_EX_CLIENTEDGE style for the edit control. This gives the edit
4480 * control a nonclient area so we don't need to draw the border.
4481 * If WS_BORDER without WS_EX_CLIENTEDGE is specified we shouldn't have
4482 * a nonclient area and we should handle painting the border ourselves.
4483 *
4484 * When making modifications please ensure that the code still works
4485 * for edit controls created directly with style 0x50800000, exStyle 0
4486 * (which should have a single pixel border)
4487 */
4488 if (lpcs->dwExStyle & WS_EX_CLIENTEDGE)
4489 es->style &= ~WS_BORDER;
4490 else if (es->style & WS_BORDER)
4491 SetWindowLongW(hwnd, GWL_STYLE, es->style & ~WS_BORDER);
4492
4493 return TRUE;
4494
4495 cleanup:
4496 SetWindowLongPtrW(es->hwndSelf, 0, 0);
4497 EDIT_InvalidateUniscribeData(es);
4498 HeapFree(GetProcessHeap(), 0, es->first_line_def);
4499 HeapFree(GetProcessHeap(), 0, es->undo_text);
4500 if (es->hloc32W) LocalFree(es->hloc32W);
4501 HeapFree(GetProcessHeap(), 0, es->logAttr);
4502 HeapFree(GetProcessHeap(), 0, es);
4503 return FALSE;
4504 }
4505
4506
4507 /*********************************************************************
4508 *
4509 * WM_CREATE
4510 *
4511 */
4512 static LRESULT EDIT_WM_Create(EDITSTATE *es, LPCWSTR name)
4513 {
4514 RECT clientRect;
4515
4516 TRACE("%s\n", debugstr_w(name));
4517 /*
4518 * To initialize some final structure members, we call some helper
4519 * functions. However, since the EDITSTATE is not consistent (i.e.
4520 * not fully initialized), we should be very careful which
4521 * functions can be called, and in what order.
4522 */
4523 EDIT_WM_SetFont(es, 0, FALSE);
4524 EDIT_EM_EmptyUndoBuffer(es);
4525
4526 /* We need to calculate the format rect
4527 (applications may send EM_SETMARGINS before the control gets visible) */
4528 GetClientRect(es->hwndSelf, &clientRect);
4529 EDIT_SetRectNP(es, &clientRect);
4530
4531 if (name && *name) {
4532 EDIT_EM_ReplaceSel(es, FALSE, name, FALSE, FALSE);
4533 /* if we insert text to the editline, the text scrolls out
4534 * of the window, as the caret is placed after the insert
4535 * pos normally; thus we reset es->selection... to 0 and
4536 * update caret
4537 */
4538 es->selection_start = es->selection_end = 0;
4539 /* Adobe Photoshop does NOT like this. and MSDN says that EN_CHANGE
4540 * Messages are only to be sent when the USER does something to
4541 * change the contents. So I am removing this EN_CHANGE
4542 *
4543 * EDIT_NOTIFY_PARENT(es, EN_CHANGE);
4544 */
4545 EDIT_EM_ScrollCaret(es);
4546 }
4547 /* force scroll info update */
4548 EDIT_UpdateScrollInfo(es);
4549 /* The rule seems to return 1 here for success */
4550 /* Power Builder masked edit controls will crash */
4551 /* if not. */
4552 /* FIXME: is that in all cases so ? */
4553 return 1;
4554 }
4555
4556
4557 /*********************************************************************
4558 *
4559 * WM_NCDESTROY
4560 *
4561 */
4562 static LRESULT EDIT_WM_NCDestroy(EDITSTATE *es)
4563 {
4564 LINEDEF *pc, *pp;
4565
4566 if (es->hloc32W) {
4567 LocalFree(es->hloc32W);
4568 }
4569 if (es->hloc32A) {
4570 LocalFree(es->hloc32A);
4571 }
4572 pc = es->first_line_def;
4573 while (pc)
4574 {
4575 pp = pc->next;
4576 HeapFree(GetProcessHeap(), 0, pc);
4577 pc = pp;
4578 }
4579
4580 SetWindowLongPtrW( es->hwndSelf, 0, 0 );
4581 HeapFree(GetProcessHeap(), 0, es->undo_text);
4582 HeapFree(GetProcessHeap(), 0, es);
4583
4584 return 0;
4585 }
4586
4587
4588 static inline LRESULT DefWindowProcT(HWND hwnd, UINT msg, WPARAM wParam, LPARAM lParam, BOOL unicode)
4589 {
4590 if(unicode)
4591 return DefWindowProcW(hwnd, msg, wParam, lParam);
4592 else
4593 return DefWindowProcA(hwnd, msg, wParam, lParam);
4594 }
4595
4596 /*********************************************************************
4597 *
4598 * EditWndProc_common
4599 *
4600 * The messages are in the order of the actual integer values
4601 * (which can be found in include/windows.h)
4602 */
4603 LRESULT EditWndProc_common( HWND hwnd, UINT msg, WPARAM wParam, LPARAM lParam, BOOL unicode )
4604 {
4605 EDITSTATE *es = (EDITSTATE *)GetWindowLongPtrW( hwnd, 0 );
4606 LRESULT result = 0;
4607
4608 TRACE("hwnd=%p msg=%x (%s) wparam=%lx lparam=%lx\n", hwnd, msg, SPY_GetMsgName(msg, hwnd), wParam, lParam);
4609
4610 if (!es && msg != WM_NCCREATE)
4611 return DefWindowProcT(hwnd, msg, wParam, lParam, unicode);
4612
4613 if (es && (msg != WM_NCDESTROY)) EDIT_LockBuffer(es);
4614
4615 switch (msg) {
4616 case EM_GETSEL:
4617 result = EDIT_EM_GetSel(es, (PUINT)wParam, (PUINT)lParam);
4618 break;
4619
4620 case EM_SETSEL:
4621 EDIT_EM_SetSel(es, wParam, lParam, FALSE);
4622 EDIT_EM_ScrollCaret(es);
4623 result = 1;
4624 break;
4625
4626 case EM_GETRECT:
4627 if (lParam)
4628 CopyRect((LPRECT)lParam, &es->format_rect);
4629 break;
4630
4631 case EM_SETRECT:
4632 if ((es->style & ES_MULTILINE) && lParam) {
4633 EDIT_SetRectNP(es, (LPRECT)lParam);
4634 EDIT_UpdateText(es, NULL, TRUE);
4635 }
4636 break;
4637
4638 case EM_SETRECTNP:
4639 if ((es->style & ES_MULTILINE) && lParam)
4640 EDIT_SetRectNP(es, (LPRECT)lParam);
4641 break;
4642
4643 case EM_SCROLL:
4644 result = EDIT_EM_Scroll(es, (INT)wParam);
4645 break;
4646
4647 case EM_LINESCROLL:
4648 result = (LRESULT)EDIT_EM_LineScroll(es, (INT)wParam, (INT)lParam);
4649 break;
4650
4651 case EM_SCROLLCARET:
4652 EDIT_EM_ScrollCaret(es);
4653 result = 1;
4654 break;
4655
4656 case EM_GETMODIFY:
4657 result = ((es->flags & EF_MODIFIED) != 0);
4658 break;
4659
4660 case EM_SETMODIFY:
4661 if (wParam)
4662 es->flags |= EF_MODIFIED;
4663 else
4664 es->flags &= ~(EF_MODIFIED | EF_UPDATE); /* reset pending updates */
4665 break;
4666
4667 case EM_GETLINECOUNT:
4668 result = (es->style & ES_MULTILINE) ? es->line_count : 1;
4669 break;
4670
4671 case EM_LINEINDEX:
4672 result = (LRESULT)EDIT_EM_LineIndex(es, (INT)wParam);
4673 break;
4674
4675 case EM_SETHANDLE:
4676 EDIT_EM_SetHandle(es, (HLOCAL)wParam);
4677 break;
4678
4679 case EM_GETHANDLE:
4680 result = (LRESULT)EDIT_EM_GetHandle(es);
4681 break;
4682
4683 case EM_GETTHUMB:
4684 result = EDIT_EM_GetThumb(es);
4685 break;
4686
4687 /* these messages missing from specs */
4688 case 0x00bf:
4689 case 0x00c0:
4690 case 0x00c3:
4691 case 0x00ca:
4692 FIXME("undocumented message 0x%x, please report\n", msg);
4693 result = DefWindowProcW(hwnd, msg, wParam, lParam);
4694 break;
4695
4696 case EM_LINELENGTH:
4697 result = (LRESULT)EDIT_EM_LineLength(es, (INT)wParam);
4698 break;
4699
4700 case EM_REPLACESEL:
4701 {
4702 LPWSTR textW;
4703
4704 if(unicode)
4705 textW = (LPWSTR)lParam;
4706 else
4707 {
4708 LPSTR textA = (LPSTR)lParam;
4709 INT countW = MultiByteToWideChar(CP_ACP, 0, textA, -1, NULL, 0);
4710 if (!(textW = HeapAlloc(GetProcessHeap(), 0, countW * sizeof(WCHAR)))) break;
4711 MultiByteToWideChar(CP_ACP, 0, textA, -1, textW, countW);
4712 }
4713
4714 EDIT_EM_ReplaceSel(es, (BOOL)wParam, textW, TRUE, TRUE);
4715 result = 1;
4716
4717 if(!unicode)
4718 HeapFree(GetProcessHeap(), 0, textW);
4719 break;
4720 }
4721
4722 case EM_GETLINE:
4723 result = (LRESULT)EDIT_EM_GetLine(es, (INT)wParam, (LPWSTR)lParam, unicode);
4724 break;
4725
4726 case EM_SETLIMITTEXT:
4727 EDIT_EM_SetLimitText(es, wParam);
4728 break;
4729
4730 case EM_CANUNDO:
4731 result = (LRESULT)EDIT_EM_CanUndo(es);
4732 break;
4733
4734 case EM_UNDO:
4735 case WM_UNDO:
4736 result = (LRESULT)EDIT_EM_Undo(es);
4737 break;
4738
4739 case EM_FMTLINES:
4740 result = (LRESULT)EDIT_EM_FmtLines(es, (BOOL)wParam);
4741 break;
4742
4743 case EM_LINEFROMCHAR:
4744 result = (LRESULT)EDIT_EM_LineFromChar(es, (INT)wParam);
4745 break;
4746
4747 case EM_SETTABSTOPS:
4748 result = (LRESULT)EDIT_EM_SetTabStops(es, (INT)wParam, (LPINT)lParam);
4749 break;
4750
4751 case EM_SETPASSWORDCHAR:
4752 {
4753 WCHAR charW = 0;
4754
4755 if(unicode)
4756 charW = (WCHAR)wParam;
4757 else
4758 {
4759 CHAR charA = wParam;
4760 MultiByteToWideChar(CP_ACP, 0, &charA, 1, &charW, 1);
4761 }
4762
4763 EDIT_EM_SetPasswordChar(es, charW);
4764 break;
4765 }
4766
4767 case EM_EMPTYUNDOBUFFER:
4768 EDIT_EM_EmptyUndoBuffer(es);
4769 break;
4770
4771 case EM_GETFIRSTVISIBLELINE:
4772 result = (es->style & ES_MULTILINE) ? es->y_offset : es->x_offset;
4773 break;
4774
4775 case EM_SETREADONLY:
4776 {
4777 DWORD old_style = es->style;
4778
4779 if (wParam) {
4780 SetWindowLongW( hwnd, GWL_STYLE,
4781 GetWindowLongW( hwnd, GWL_STYLE ) | ES_READONLY );
4782 es->style |= ES_READONLY;
4783 } else {
4784 SetWindowLongW( hwnd, GWL_STYLE,
4785 GetWindowLongW( hwnd, GWL_STYLE ) & ~ES_READONLY );
4786 es->style &= ~ES_READONLY;
4787 }
4788
4789 if (old_style ^ es->style)
4790 InvalidateRect(es->hwndSelf, NULL, TRUE);
4791
4792 result = 1;
4793 break;
4794 }
4795
4796 case EM_SETWORDBREAKPROC:
4797 EDIT_EM_SetWordBreakProc(es, (void *)lParam);
4798 break;
4799
4800 case EM_GETWORDBREAKPROC:
4801 result = (LRESULT)es->word_break_proc;
4802 break;
4803
4804 case EM_GETPASSWORDCHAR:
4805 {
4806 if(unicode)
4807 result = es->password_char;
4808 else
4809 {
4810 WCHAR charW = es->password_char;
4811 CHAR charA = 0;
4812 WideCharToMultiByte(CP_ACP, 0, &charW, 1, &charA, 1, NULL, NULL);
4813 result = charA;
4814 }
4815 break;
4816 }
4817
4818 case EM_SETMARGINS:
4819 EDIT_EM_SetMargins(es, (INT)wParam, LOWORD(lParam), HIWORD(lParam), TRUE);
4820 break;
4821
4822 case EM_GETMARGINS:
4823 result = MAKELONG(es->left_margin, es->right_margin);
4824 break;
4825
4826 case EM_GETLIMITTEXT:
4827 result = es->buffer_limit;
4828 break;
4829
4830 case EM_POSFROMCHAR:
4831 if ((INT)wParam >= get_text_length(es)) result = -1;
4832 else result = EDIT_EM_PosFromChar(es, (INT)wParam, FALSE);
4833 break;
4834
4835 case EM_CHARFROMPOS:
4836 result = EDIT_EM_CharFromPos(es, (short)LOWORD(lParam), (short)HIWORD(lParam));
4837 break;
4838
4839 /* End of the EM_ messages which were in numerical order; what order
4840 * are these in? vaguely alphabetical?
4841 */
4842
4843 case WM_NCCREATE:
4844 result = EDIT_WM_NCCreate(hwnd, (LPCREATESTRUCTW)lParam, unicode);
4845 break;
4846
4847 case WM_NCDESTROY:
4848 result = EDIT_WM_NCDestroy(es);
4849 es = NULL;
4850 break;
4851
4852 case WM_GETDLGCODE:
4853 result = DLGC_HASSETSEL | DLGC_WANTCHARS | DLGC_WANTARROWS;
4854
4855 if (es->style & ES_MULTILINE)
4856 result |= DLGC_WANTALLKEYS;
4857
4858 if (lParam)
4859 {
4860 es->flags|=EF_DIALOGMODE;
4861
4862 if (((LPMSG)lParam)->message == WM_KEYDOWN)
4863 {
4864 int vk = (int)((LPMSG)lParam)->wParam;
4865
4866 if (es->hwndListBox)
4867 {
4868 if (vk == VK_RETURN || vk == VK_ESCAPE)
4869 if (SendMessageW(GetParent(hwnd), CB_GETDROPPEDSTATE, 0, 0))
4870 result |= DLGC_WANTMESSAGE;
4871 }
4872 }
4873 }
4874 break;
4875
4876 case WM_IME_CHAR:
4877 if (!unicode)
4878 {
4879 WCHAR charW;
4880 CHAR strng[2];
4881
4882 strng[0] = wParam >> 8;
4883 strng[1] = wParam & 0xff;
4884 if (strng[0]) MultiByteToWideChar(CP_ACP, 0, strng, 2, &charW, 1);
4885 else MultiByteToWideChar(CP_ACP, 0, &strng[1], 1, &charW, 1);
4886 result = EDIT_WM_Char(es, charW);
4887 break;
4888 }
4889 /* fall through */
4890 case WM_CHAR:
4891 {
4892 WCHAR charW;
4893
4894 if(unicode)
4895 charW = wParam;
4896 else
4897 {
4898 CHAR charA = wParam;
4899 MultiByteToWideChar(CP_ACP, 0, &charA, 1, &charW, 1);
4900 }
4901
4902 if (es->hwndListBox)
4903 {
4904 if (charW == VK_RETURN || charW == VK_ESCAPE)
4905 {
4906 if (SendMessageW(GetParent(hwnd), CB_GETDROPPEDSTATE, 0, 0))
4907 SendMessageW(GetParent(hwnd), WM_KEYDOWN, charW, 0);
4908 break;
4909 }
4910 }
4911 result = EDIT_WM_Char(es, charW);
4912 break;
4913 }
4914
4915 case WM_UNICHAR:
4916 if (unicode)
4917 {
4918 if (wParam == UNICODE_NOCHAR) return TRUE;
4919 if (wParam <= 0x000fffff)
4920 {
4921 if(wParam > 0xffff) /* convert to surrogates */
4922 {
4923 wParam -= 0x10000;
4924 EDIT_WM_Char(es, (wParam >> 10) + 0xd800);
4925 EDIT_WM_Char(es, (wParam & 0x03ff) + 0xdc00);
4926 }
4927 else EDIT_WM_Char(es, wParam);
4928 }
4929 return 0;
4930 }
4931 break;
4932
4933 case WM_CLEAR:
4934 EDIT_WM_Clear(es);
4935 break;
4936
4937 case WM_COMMAND:
4938 EDIT_WM_Command(es, HIWORD(wParam), LOWORD(wParam), (HWND)lParam);
4939 break;
4940
4941 case WM_CONTEXTMENU:
4942 EDIT_WM_ContextMenu(es, (short)LOWORD(lParam), (short)HIWORD(lParam));
4943 break;
4944
4945 case WM_COPY:
4946 EDIT_WM_Copy(es);
4947 break;
4948
4949 case WM_CREATE:
4950 if(unicode)
4951 result = EDIT_WM_Create(es, ((LPCREATESTRUCTW)lParam)->lpszName);
4952 else
4953 {
4954 LPCSTR nameA = ((LPCREATESTRUCTA)lParam)->lpszName;
4955 LPWSTR nameW = NULL;
4956 if(nameA)
4957 {
4958 INT countW = MultiByteToWideChar(CP_ACP, 0, nameA, -1, NULL, 0);
4959 if((nameW = HeapAlloc(GetProcessHeap(), 0, countW * sizeof(WCHAR))))
4960 MultiByteToWideChar(CP_ACP, 0, nameA, -1, nameW, countW);
4961 }
4962 result = EDIT_WM_Create(es, nameW);
4963 HeapFree(GetProcessHeap(), 0, nameW);
4964 }
4965 break;
4966
4967 case WM_CUT:
4968 EDIT_WM_Cut(es);
4969 break;
4970
4971 case WM_ENABLE:
4972 es->bEnableState = (BOOL) wParam;
4973 EDIT_UpdateText(es, NULL, TRUE);
4974 break;
4975
4976 case WM_ERASEBKGND:
4977 /* we do the proper erase in EDIT_WM_Paint */
4978 result = 1;
4979 break;
4980
4981 case WM_GETFONT:
4982 result = (LRESULT)es->font;
4983 break;
4984
4985 case WM_GETTEXT:
4986 result = (LRESULT)EDIT_WM_GetText(es, (INT)wParam, (LPWSTR)lParam, unicode);
4987 break;
4988
4989 case WM_GETTEXTLENGTH:
4990 if (unicode) result = get_text_length(es);
4991 else result = WideCharToMultiByte( CP_ACP, 0, es->text, get_text_length(es),
4992 NULL, 0, NULL, NULL );
4993 break;
4994
4995 case WM_HSCROLL:
4996 result = EDIT_WM_HScroll(es, LOWORD(wParam), (short)HIWORD(wParam));
4997 break;
4998
4999 case WM_KEYDOWN:
5000 result = EDIT_WM_KeyDown(es, (INT)wParam);
5001 break;
5002
5003 case WM_KILLFOCUS:
5004 result = EDIT_WM_KillFocus(es);
5005 break;
5006
5007 case WM_LBUTTONDBLCLK:
5008 result = EDIT_WM_LButtonDblClk(es);
5009 break;
5010
5011 case WM_LBUTTONDOWN:
5012 result = EDIT_WM_LButtonDown(es, wParam, (short)LOWORD(lParam), (short)HIWORD(lParam));
5013 break;
5014
5015 case WM_LBUTTONUP:
5016 result = EDIT_WM_LButtonUp(es);
5017 break;
5018
5019 case WM_MBUTTONDOWN:
5020 result = EDIT_WM_MButtonDown(es);
5021 break;
5022
5023 case WM_MOUSEMOVE:
5024 result = EDIT_WM_MouseMove(es, (short)LOWORD(lParam), (short)HIWORD(lParam));
5025 break;
5026
5027 case WM_PRINTCLIENT:
5028 case WM_PAINT:
5029 EDIT_WM_Paint(es, (HDC)wParam);
5030 break;
5031
5032 case WM_PASTE:
5033 EDIT_WM_Paste(es);
5034 break;
5035
5036 case WM_SETFOCUS:
5037 EDIT_WM_SetFocus(es);
5038 break;
5039
5040 case WM_SETFONT:
5041 EDIT_WM_SetFont(es, (HFONT)wParam, LOWORD(lParam) != 0);
5042 break;
5043
5044 case WM_SETREDRAW:
5045 /* FIXME: actually set an internal flag and behave accordingly */
5046 break;
5047
5048 case WM_SETTEXT:
5049 EDIT_WM_SetText(es, (LPCWSTR)lParam, unicode);
5050 result = TRUE;
5051 break;
5052
5053 case WM_SIZE:
5054 EDIT_WM_Size(es, (UINT)wParam, LOWORD(lParam), HIWORD(lParam));
5055 break;
5056
5057 case WM_STYLECHANGED:
5058 result = EDIT_WM_StyleChanged(es, wParam, (const STYLESTRUCT *)lParam);
5059 break;
5060
5061 case WM_STYLECHANGING:
5062 result = 0; /* See EDIT_WM_StyleChanged */
5063 break;
5064
5065 case WM_SYSKEYDOWN:
5066 result = EDIT_WM_SysKeyDown(es, (INT)wParam, (DWORD)lParam);
5067 break;
5068
5069 case WM_TIMER:
5070 EDIT_WM_Timer(es);
5071 break;
5072
5073 case WM_VSCROLL:
5074 result = EDIT_WM_VScroll(es, LOWORD(wParam), (short)HIWORD(wParam));
5075 break;
5076
5077 case WM_MOUSEWHEEL:
5078 {
5079 int gcWheelDelta = 0;
5080 UINT pulScrollLines = 3;
5081 SystemParametersInfoW(SPI_GETWHEELSCROLLLINES,0, &pulScrollLines, 0);
5082
5083 if (wParam & (MK_SHIFT | MK_CONTROL)) {
5084 result = DefWindowProcW(hwnd, msg, wParam, lParam);
5085 break;
5086 }
5087 gcWheelDelta -= GET_WHEEL_DELTA_WPARAM(wParam);
5088 if (abs(gcWheelDelta) >= WHEEL_DELTA && pulScrollLines)
5089 {
5090 int cLineScroll= (int) min((UINT) es->line_count, pulScrollLines);
5091 cLineScroll *= (gcWheelDelta / WHEEL_DELTA);
5092 result = EDIT_EM_LineScroll(es, 0, cLineScroll);
5093 }
5094 }
5095 break;
5096
5097
5098 /* IME messages to make the edit control IME aware */
5099 case WM_IME_SETCONTEXT:
5100 break;
5101
5102 case WM_IME_STARTCOMPOSITION:
5103 es->composition_start = es->selection_end;
5104 es->composition_len = 0;
5105 break;
5106
5107 case WM_IME_COMPOSITION:
5108 EDIT_ImeComposition(hwnd, lParam, es);
5109 break;
5110
5111 case WM_IME_ENDCOMPOSITION:
5112 if (es->composition_len > 0)
5113 {
5114 EDIT_EM_ReplaceSel(es, TRUE, empty_stringW, TRUE, TRUE);
5115 es->selection_end = es->selection_start;
5116 es->composition_len= 0;
5117 }
5118 break;
5119
5120 case WM_IME_COMPOSITIONFULL:
5121 break;
5122
5123 case WM_IME_SELECT:
5124 break;
5125
5126 case WM_IME_CONTROL:
5127 break;
5128
5129 default:
5130 result = DefWindowProcT(hwnd, msg, wParam, lParam, unicode);
5131 break;
5132 }
5133
5134 if (IsWindow(hwnd) && es) EDIT_UnlockBuffer(es, FALSE);
5135
5136 TRACE("hwnd=%p msg=%x (%s) -- 0x%08lx\n", hwnd, msg, SPY_GetMsgName(msg, hwnd), result);
5137
5138 return result;
5139 }
5140
5141
5142 /*********************************************************************
5143 * edit class descriptor
5144 */
5145 static const WCHAR editW[] = {'E','d','i','t',0};
5146 const struct builtin_class_descr EDIT_builtin_class =
5147 {
5148 editW, /* name */
5149 CS_DBLCLKS | CS_PARENTDC, /* style */
5150 WINPROC_EDIT, /* proc */
5151 #ifdef __i386__
5152 sizeof(EDITSTATE *) + sizeof(WORD), /* extra */
5153 #else
5154 sizeof(EDITSTATE *), /* extra */
5155 #endif
5156 IDC_IBEAM, /* cursor */
5157 0 /* brush */
5158 };
Maarten's multimedia branch