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user32: Implement GetDpiForWindow().
[wine.git] / dlls / user32 / edit.c
blob96ecbece85f71f25fd636275058c74789f8a0c23
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 * TODO:
24 * - EM_GETIMESTATUS, EM_SETIMESTATUS
25 * - EN_ALIGN_LTR_EC
26 * - EN_ALIGN_RTL_EC
27 * - ES_OEMCONVERT
28 *
29 */
30
31 #include "config.h"
32
33 #include <stdarg.h>
34 #include <string.h>
35 #include <stdlib.h>
36
37 #include "windef.h"
38 #include "winbase.h"
39 #include "winnt.h"
40 #include "win.h"
41 #include "imm.h"
42 #include "usp10.h"
43 #include "wine/unicode.h"
44 #include "controls.h"
45 #include "user_private.h"
46 #include "wine/debug.h"
47
48 WINE_DEFAULT_DEBUG_CHANNEL(edit);
49 WINE_DECLARE_DEBUG_CHANNEL(combo);
50 WINE_DECLARE_DEBUG_CHANNEL(relay);
51
52 #define BUFLIMIT_INITIAL 30000 /* initial buffer size */
53 #define GROWLENGTH 32 /* buffers granularity in bytes: must be power of 2 */
54 #define ROUND_TO_GROW(size) (((size) + (GROWLENGTH - 1)) & ~(GROWLENGTH - 1))
55 #define HSCROLL_FRACTION 3 /* scroll window by 1/3 width */
56
57 /*
58 * extra flags for EDITSTATE.flags field
59 */
60 #define EF_MODIFIED 0x0001 /* text has been modified */
61 #define EF_FOCUSED 0x0002 /* we have input focus */
62 #define EF_UPDATE 0x0004 /* notify parent of changed state */
63 #define EF_VSCROLL_TRACK 0x0008 /* don't SetScrollPos() since we are tracking the thumb */
64 #define EF_HSCROLL_TRACK 0x0010 /* don't SetScrollPos() since we are tracking the thumb */
65 #define EF_AFTER_WRAP 0x0080 /* the caret is displayed after the last character of a
66 wrapped line, instead of in front of the next character */
67 #define EF_USE_SOFTBRK 0x0100 /* Enable soft breaks in text. */
68 #define EF_DIALOGMODE 0x0200 /* Indicates that we are inside a dialog window */
69
70 typedef enum
71 {
72 END_0 = 0, /* line ends with terminating '\0' character */
73 END_WRAP, /* line is wrapped */
74 END_HARD, /* line ends with a hard return '\r\n' */
75 END_SOFT, /* line ends with a soft return '\r\r\n' */
76 END_RICH /* line ends with a single '\n' */
77 } LINE_END;
78
79 typedef struct tagLINEDEF {
80 INT length; /* bruto length of a line in bytes */
81 INT net_length; /* netto length of a line in visible characters */
82 LINE_END ending;
83 INT width; /* width of the line in pixels */
84 INT index; /* line index into the buffer */
85 SCRIPT_STRING_ANALYSIS ssa; /* Uniscribe Data */
86 struct tagLINEDEF *next;
87 } LINEDEF;
88
89 typedef struct
90 {
91 BOOL is_unicode; /* how the control was created */
92 LPWSTR text; /* the actual contents of the control */
93 UINT text_length; /* cached length of text buffer (in WCHARs) - use get_text_length() to retrieve */
94 UINT buffer_size; /* the size of the buffer in characters */
95 UINT buffer_limit; /* the maximum size to which the buffer may grow in characters */
96 HFONT font; /* NULL means standard system font */
97 INT x_offset; /* scroll offset for multi lines this is in pixels
98 for single lines it's in characters */
99 INT line_height; /* height of a screen line in pixels */
100 INT char_width; /* average character width in pixels */
101 DWORD style; /* sane version of wnd->dwStyle */
102 WORD flags; /* flags that are not in es->style or wnd->flags (EF_XXX) */
103 INT undo_insert_count; /* number of characters inserted in sequence */
104 UINT undo_position; /* character index of the insertion and deletion */
105 LPWSTR undo_text; /* deleted text */
106 UINT undo_buffer_size; /* size of the deleted text buffer */
107 INT selection_start; /* == selection_end if no selection */
108 INT selection_end; /* == current caret position */
109 WCHAR password_char; /* == 0 if no password char, and for multi line controls */
110 INT left_margin; /* in pixels */
111 INT right_margin; /* in pixels */
112 RECT format_rect;
113 INT text_width; /* width of the widest line in pixels for multi line controls
114 and just line width for single line controls */
115 INT region_posx; /* Position of cursor relative to region: */
116 INT region_posy; /* -1: to left, 0: within, 1: to right */
117 void *word_break_proc; /* 32-bit word break proc: ANSI or Unicode */
118 INT line_count; /* number of lines */
119 INT y_offset; /* scroll offset in number of lines */
120 BOOL bCaptureState; /* flag indicating whether mouse was captured */
121 BOOL bEnableState; /* flag keeping the enable state */
122 HWND hwndSelf; /* the our window handle */
123 HWND hwndParent; /* Handle of parent for sending EN_* messages.
124 Even if parent will change, EN_* messages
125 should be sent to the first parent. */
126 HWND hwndListBox; /* handle of ComboBox's listbox or NULL */
127 INT wheelDeltaRemainder; /* scroll wheel delta left over after scrolling whole lines */
128 /*
129 * only for multi line controls
130 */
131 INT lock_count; /* amount of re-entries in the EditWndProc */
132 INT tabs_count;
133 LPINT tabs;
134 LINEDEF *first_line_def; /* linked list of (soft) linebreaks */
135 HLOCAL hloc32W; /* our unicode local memory block */
136 HLOCAL hloc32A; /* alias for ANSI control receiving EM_GETHANDLE
137 or EM_SETHANDLE */
138 HLOCAL hlocapp; /* The text buffer handle belongs to the app */
139 /*
140 * IME Data
141 */
142 UINT composition_len; /* length of composition, 0 == no composition */
143 int composition_start; /* the character position for the composition */
144 /*
145 * Uniscribe Data
146 */
147 SCRIPT_LOGATTR *logAttr;
148 SCRIPT_STRING_ANALYSIS ssa; /* Uniscribe Data for single line controls */
149 } EDITSTATE;
150
151
152 #define SWAP_UINT32(x,y) do { UINT temp = (UINT)(x); (x) = (UINT)(y); (y) = temp; } while(0)
153 #define ORDER_UINT(x,y) do { if ((UINT)(y) < (UINT)(x)) SWAP_UINT32((x),(y)); } while(0)
154
155 /* used for disabled or read-only edit control */
156 #define EDIT_NOTIFY_PARENT(es, wNotifyCode) \
157 do \
158 { /* Notify parent which has created this edit control */ \
159 TRACE("notification " #wNotifyCode " sent to hwnd=%p\n", es->hwndParent); \
160 SendMessageW(es->hwndParent, WM_COMMAND, \
161 MAKEWPARAM(GetWindowLongPtrW((es->hwndSelf),GWLP_ID), wNotifyCode), \
162 (LPARAM)(es->hwndSelf)); \
163 } while(0)
164
165 static LRESULT EDIT_EM_PosFromChar(EDITSTATE *es, INT index, BOOL after_wrap);
166
167 /*********************************************************************
168 *
169 * EM_CANUNDO
170 *
171 */
172 static inline BOOL EDIT_EM_CanUndo(const EDITSTATE *es)
173 {
174 return (es->undo_insert_count || strlenW(es->undo_text));
175 }
176
177
178 /*********************************************************************
179 *
180 * EM_EMPTYUNDOBUFFER
181 *
182 */
183 static inline void EDIT_EM_EmptyUndoBuffer(EDITSTATE *es)
184 {
185 es->undo_insert_count = 0;
186 *es->undo_text = '\0';
187 }
188
189
190 /**********************************************************************
191 * get_app_version
192 *
193 * Returns the window version in case Wine emulates a later version
194 * of windows than the application expects.
195 *
196 * In a number of cases when windows runs an application that was
197 * designed for an earlier windows version, windows reverts
198 * to "old" behaviour of that earlier version.
199 *
200 * An example is a disabled edit control that needs to be painted.
201 * Old style behaviour is to send a WM_CTLCOLOREDIT message. This was
202 * changed in Win95, NT4.0 by a WM_CTLCOLORSTATIC message _only_ for
203 * applications with an expected version 0f 4.0 or higher.
204 *
205 */
206 static DWORD get_app_version(void)
207 {
208 static DWORD version;
209 if (!version)
210 {
211 DWORD dwEmulatedVersion;
212 OSVERSIONINFOW info;
213 DWORD dwProcVersion = GetProcessVersion(0);
214
215 info.dwOSVersionInfoSize = sizeof(OSVERSIONINFOW);
216 GetVersionExW( &info );
217 dwEmulatedVersion = MAKELONG( info.dwMinorVersion, info.dwMajorVersion );
218 /* FIXME: this may not be 100% correct; see discussion on the
219 * wine developer list in Nov 1999 */
220 version = dwProcVersion < dwEmulatedVersion ? dwProcVersion : dwEmulatedVersion;
221 }
222 return version;
223 }
224
225 static HBRUSH EDIT_NotifyCtlColor(EDITSTATE *es, HDC hdc)
226 {
227 HBRUSH hbrush;
228 UINT msg;
229
230 if ( get_app_version() >= 0x40000 && (!es->bEnableState || (es->style & ES_READONLY)))
231 msg = WM_CTLCOLORSTATIC;
232 else
233 msg = WM_CTLCOLOREDIT;
234
235 /* why do we notify to es->hwndParent, and we send this one to GetParent()? */
236 hbrush = (HBRUSH)SendMessageW(GetParent(es->hwndSelf), msg, (WPARAM)hdc, (LPARAM)es->hwndSelf);
237 if (!hbrush)
238 hbrush = (HBRUSH)DefWindowProcW(GetParent(es->hwndSelf), msg, (WPARAM)hdc, (LPARAM)es->hwndSelf);
239 return hbrush;
240 }
241
242
243 static inline UINT get_text_length(EDITSTATE *es)
244 {
245 if(es->text_length == (UINT)-1)
246 es->text_length = strlenW(es->text);
247 return es->text_length;
248 }
249
250
251 /*********************************************************************
252 *
253 * EDIT_WordBreakProc
254 *
255 * Find the beginning of words.
256 * Note: unlike the specs for a WordBreakProc, this function can
257 * only be called without linebreaks between s[0] up to
258 * s[count - 1]. Remember it is only called
259 * internally, so we can decide this for ourselves.
260 * Additionally we will always be breaking the full string.
261 *
262 */
263 static INT EDIT_WordBreakProc(EDITSTATE *es, LPWSTR s, INT index, INT count, INT action)
264 {
265 INT ret = 0;
266
267 TRACE("s=%p, index=%d, count=%d, action=%d\n", s, index, count, action);
268
269 if(!s) return 0;
270
271 if (!es->logAttr)
272 {
273 SCRIPT_ANALYSIS psa;
274
275 memset(&psa,0,sizeof(SCRIPT_ANALYSIS));
276 psa.eScript = SCRIPT_UNDEFINED;
277
278 es->logAttr = HeapAlloc(GetProcessHeap(), 0, sizeof(SCRIPT_LOGATTR) * get_text_length(es));
279 ScriptBreak(es->text, get_text_length(es), &psa, es->logAttr);
280 }
281
282 switch (action) {
283 case WB_LEFT:
284 if (index)
285 index--;
286 while (index && !es->logAttr[index].fSoftBreak)
287 index--;
288 ret = index;
289 break;
290 case WB_RIGHT:
291 if (!count)
292 break;
293 while (index < count && s[index] && !es->logAttr[index].fSoftBreak)
294 index++;
295 ret = index;
296 break;
297 case WB_ISDELIMITER:
298 ret = es->logAttr[index].fWhiteSpace;
299 break;
300 default:
301 ERR("unknown action code, please report !\n");
302 break;
303 }
304 return ret;
305 }
306
307
308 /*********************************************************************
309 *
310 * EDIT_CallWordBreakProc
311 *
312 * Call appropriate WordBreakProc (internal or external).
313 *
314 * Note: The "start" argument should always be an index referring
315 * to es->text. The actual wordbreak proc might be
316 * 16 bit, so we can't always pass any 32 bit LPSTR.
317 * Hence we assume that es->text is the buffer that holds
318 * the string under examination (we can decide this for ourselves).
319 *
320 */
321 static INT EDIT_CallWordBreakProc(EDITSTATE *es, INT start, INT index, INT count, INT action)
322 {
323 INT ret;
324
325 if (es->word_break_proc)
326 {
327 if(es->is_unicode)
328 {
329 EDITWORDBREAKPROCW wbpW = (EDITWORDBREAKPROCW)es->word_break_proc;
330
331 TRACE_(relay)("\1Call wordbreakW %p (str=%s,idx=%d,cnt=%d,act=%d)\n",
332 es->word_break_proc, debugstr_wn(es->text + start, count), index, count, action);
333 ret = wbpW(es->text + start, index, count, action);
334 TRACE_(relay)("\1Ret wordbreakW %p retval=%d\n", es->word_break_proc, ret );
335 }
336 else
337 {
338 EDITWORDBREAKPROCA wbpA = (EDITWORDBREAKPROCA)es->word_break_proc;
339 INT countA;
340 CHAR *textA;
341
342 countA = WideCharToMultiByte(CP_ACP, 0, es->text + start, count, NULL, 0, NULL, NULL);
343 textA = HeapAlloc(GetProcessHeap(), 0, countA);
344 WideCharToMultiByte(CP_ACP, 0, es->text + start, count, textA, countA, NULL, NULL);
345 TRACE_(relay)("\1Call wordbreakA %p(str=%s,idx=%d,cnt=%d,act=%d)\n",
346 es->word_break_proc, debugstr_an(textA, countA), index, countA, action);
347 ret = wbpA(textA, index, countA, action);
348 HeapFree(GetProcessHeap(), 0, textA);
349 TRACE_(relay)("\1Ret wordbreakA %p retval=%d\n", es->word_break_proc, ret );
350 }
351 }
352 else
353 ret = EDIT_WordBreakProc(es, es->text, index+start, count+start, action) - start;
354
355 return ret;
356 }
357
358 static inline void EDIT_InvalidateUniscribeData_linedef(LINEDEF *line_def)
359 {
360 if (line_def->ssa)
361 {
362 ScriptStringFree(&line_def->ssa);
363 line_def->ssa = NULL;
364 }
365 }
366
367 static inline void EDIT_InvalidateUniscribeData(EDITSTATE *es)
368 {
369 LINEDEF *line_def = es->first_line_def;
370 while (line_def)
371 {
372 EDIT_InvalidateUniscribeData_linedef(line_def);
373 line_def = line_def->next;
374 }
375 if (es->ssa)
376 {
377 ScriptStringFree(&es->ssa);
378 es->ssa = NULL;
379 }
380 }
381
382 static SCRIPT_STRING_ANALYSIS EDIT_UpdateUniscribeData_linedef(EDITSTATE *es, HDC dc, LINEDEF *line_def)
383 {
384 if (!line_def)
385 return NULL;
386
387 if (line_def->net_length && !line_def->ssa)
388 {
389 int index = line_def->index;
390 HFONT old_font = NULL;
391 HDC udc = dc;
392 SCRIPT_TABDEF tabdef;
393 HRESULT hr;
394
395 if (!udc)
396 udc = GetDC(es->hwndSelf);
397 if (es->font)
398 old_font = SelectObject(udc, es->font);
399
400 tabdef.cTabStops = es->tabs_count;
401 tabdef.iScale = GdiGetCharDimensions(udc, NULL, NULL);
402 tabdef.pTabStops = es->tabs;
403 tabdef.iTabOrigin = 0;
404
405 hr = ScriptStringAnalyse(udc, &es->text[index], line_def->net_length,
406 (1.5*line_def->net_length+16), -1,
407 SSA_LINK|SSA_FALLBACK|SSA_GLYPHS|SSA_TAB, -1,
408 NULL, NULL, NULL, &tabdef, NULL, &line_def->ssa);
409 if (FAILED(hr))
410 {
411 WARN("ScriptStringAnalyse failed (%x)\n",hr);
412 line_def->ssa = NULL;
413 }
414
415 if (es->font)
416 SelectObject(udc, old_font);
417 if (udc != dc)
418 ReleaseDC(es->hwndSelf, udc);
419 }
420
421 return line_def->ssa;
422 }
423
424 static SCRIPT_STRING_ANALYSIS EDIT_UpdateUniscribeData(EDITSTATE *es, HDC dc, INT line)
425 {
426 LINEDEF *line_def;
427
428 if (!(es->style & ES_MULTILINE))
429 {
430 if (!es->ssa)
431 {
432 INT length = get_text_length(es);
433 HFONT old_font = NULL;
434 HDC udc = dc;
435
436 if (!udc)
437 udc = GetDC(es->hwndSelf);
438 if (es->font)
439 old_font = SelectObject(udc, es->font);
440
441 if (es->style & ES_PASSWORD)
442 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);
443 else
444 ScriptStringAnalyse(udc, es->text, length, (1.5*length+16), -1, SSA_LINK|SSA_FALLBACK|SSA_GLYPHS, -1, NULL, NULL, NULL, NULL, NULL, &es->ssa);
445
446 if (es->font)
447 SelectObject(udc, old_font);
448 if (udc != dc)
449 ReleaseDC(es->hwndSelf, udc);
450 }
451 return es->ssa;
452 }
453 else
454 {
455 line_def = es->first_line_def;
456 while (line_def && line)
457 {
458 line_def = line_def->next;
459 line--;
460 }
461
462 return EDIT_UpdateUniscribeData_linedef(es,dc,line_def);
463 }
464 }
465
466 static inline INT get_vertical_line_count(EDITSTATE *es)
467 {
468 INT vlc = (es->format_rect.bottom - es->format_rect.top) / es->line_height;
469 return max(1,vlc);
470 }
471
472 /*********************************************************************
473 *
474 * EDIT_BuildLineDefs_ML
475 *
476 * Build linked list of text lines.
477 * Lines can end with '\0' (last line), a character (if it is wrapped),
478 * a soft return '\r\r\n' or a hard return '\r\n'
479 *
480 */
481 static void EDIT_BuildLineDefs_ML(EDITSTATE *es, INT istart, INT iend, INT delta, HRGN hrgn)
482 {
483 LPWSTR current_position, cp;
484 INT fw;
485 LINEDEF *current_line;
486 LINEDEF *previous_line;
487 LINEDEF *start_line;
488 INT line_index = 0, nstart_line, nstart_index;
489 INT line_count = es->line_count;
490 INT orig_net_length;
491 RECT rc;
492 INT vlc;
493
494 if (istart == iend && delta == 0)
495 return;
496
497 previous_line = NULL;
498 current_line = es->first_line_def;
499
500 /* Find starting line. istart must lie inside an existing line or
501 * at the end of buffer */
502 do {
503 if (istart < current_line->index + current_line->length ||
504 current_line->ending == END_0)
505 break;
506
507 previous_line = current_line;
508 current_line = current_line->next;
509 line_index++;
510 } while (current_line);
511
512 if (!current_line) /* Error occurred start is not inside previous buffer */
513 {
514 FIXME(" modification occurred outside buffer\n");
515 return;
516 }
517
518 /* Remember start of modifications in order to calculate update region */
519 nstart_line = line_index;
520 nstart_index = current_line->index;
521
522 /* We must start to reformat from the previous line since the modifications
523 * may have caused the line to wrap upwards. */
524 if (!(es->style & ES_AUTOHSCROLL) && line_index > 0)
525 {
526 line_index--;
527 current_line = previous_line;
528 }
529 start_line = current_line;
530
531 fw = es->format_rect.right - es->format_rect.left;
532 current_position = es->text + current_line->index;
533 vlc = get_vertical_line_count(es);
534 do {
535 if (current_line != start_line)
536 {
537 if (!current_line || current_line->index + delta > current_position - es->text)
538 {
539 /* The buffer has been expanded, create a new line and
540 insert it into the link list */
541 LINEDEF *new_line = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, sizeof(LINEDEF));
542 new_line->next = previous_line->next;
543 previous_line->next = new_line;
544 current_line = new_line;
545 es->line_count++;
546 }
547 else if (current_line->index + delta < current_position - es->text)
548 {
549 /* The previous line merged with this line so we delete this extra entry */
550 previous_line->next = current_line->next;
551 HeapFree(GetProcessHeap(), 0, current_line);
552 current_line = previous_line->next;
553 es->line_count--;
554 continue;
555 }
556 else /* current_line->index + delta == current_position */
557 {
558 if (current_position - es->text > iend)
559 break; /* We reached end of line modifications */
560 /* else recalculate this line */
561 }
562 }
563
564 current_line->index = current_position - es->text;
565 orig_net_length = current_line->net_length;
566
567 /* Find end of line */
568 cp = current_position;
569 while (*cp) {
570 if (*cp == '\n') break;
571 if ((*cp == '\r') && (*(cp + 1) == '\n'))
572 break;
573 cp++;
574 }
575
576 /* Mark type of line termination */
577 if (!(*cp)) {
578 current_line->ending = END_0;
579 current_line->net_length = strlenW(current_position);
580 } else if ((cp > current_position) && (*(cp - 1) == '\r')) {
581 current_line->ending = END_SOFT;
582 current_line->net_length = cp - current_position - 1;
583 } else if (*cp == '\n') {
584 current_line->ending = END_RICH;
585 current_line->net_length = cp - current_position;
586 } else {
587 current_line->ending = END_HARD;
588 current_line->net_length = cp - current_position;
589 }
590
591 if (current_line->net_length)
592 {
593 const SIZE *sz;
594 EDIT_InvalidateUniscribeData_linedef(current_line);
595 EDIT_UpdateUniscribeData_linedef(es, NULL, current_line);
596 if (current_line->ssa)
597 {
598 sz = ScriptString_pSize(current_line->ssa);
599 /* Calculate line width */
600 current_line->width = sz->cx;
601 }
602 else current_line->width = es->char_width * current_line->net_length;
603 }
604 else current_line->width = 0;
605
606 /* FIXME: check here for lines that are too wide even in AUTOHSCROLL (> 32767 ???) */
607
608 /* Line breaks just look back from the end and find the next break and try that. */
609
610 if (!(es->style & ES_AUTOHSCROLL)) {
611 if (current_line->width > fw && fw > es->char_width) {
612
613 INT prev, next;
614 int w;
615 const SIZE *sz;
616 float d;
617
618 prev = current_line->net_length - 1;
619 w = current_line->net_length;
620 d = (float)current_line->width/(float)fw;
621 if (d > 1.2f) d -= 0.2f;
622 next = prev/d;
623 if (next >= prev) next = prev-1;
624 do {
625 prev = EDIT_CallWordBreakProc(es, current_position - es->text,
626 next, current_line->net_length, WB_LEFT);
627 current_line->net_length = prev;
628 EDIT_InvalidateUniscribeData_linedef(current_line);
629 EDIT_UpdateUniscribeData_linedef(es, NULL, current_line);
630 if (current_line->ssa)
631 sz = ScriptString_pSize(current_line->ssa);
632 else sz = 0;
633 if (sz)
634 current_line->width = sz->cx;
635 else
636 prev = 0;
637 next = prev - 1;
638 } while (prev && current_line->width > fw);
639 current_line->net_length = w;
640
641 if (prev == 0) { /* Didn't find a line break so force a break */
642 INT *piDx;
643 const INT *count;
644
645 EDIT_InvalidateUniscribeData_linedef(current_line);
646 EDIT_UpdateUniscribeData_linedef(es, NULL, current_line);
647
648 if (current_line->ssa)
649 {
650 count = ScriptString_pcOutChars(current_line->ssa);
651 piDx = HeapAlloc(GetProcessHeap(),0,sizeof(INT) * (*count));
652 ScriptStringGetLogicalWidths(current_line->ssa,piDx);
653
654 prev = current_line->net_length-1;
655 do {
656 current_line->width -= piDx[prev];
657 prev--;
658 } while ( prev > 0 && current_line->width > fw);
659 if (prev<=0)
660 prev = 1;
661 HeapFree(GetProcessHeap(),0,piDx);
662 }
663 else
664 prev = (fw / es->char_width);
665 }
666
667 /* If the first line we are calculating, wrapped before istart, we must
668 * adjust istart in order for this to be reflected in the update region. */
669 if (current_line->index == nstart_index && istart > current_line->index + prev)
670 istart = current_line->index + prev;
671 /* else if we are updating the previous line before the first line we
672 * are re-calculating and it expanded */
673 else if (current_line == start_line &&
674 current_line->index != nstart_index && orig_net_length < prev)
675 {
676 /* Line expanded due to an upwards line wrap so we must partially include
677 * previous line in update region */
678 nstart_line = line_index;
679 nstart_index = current_line->index;
680 istart = current_line->index + orig_net_length;
681 }
682
683 current_line->net_length = prev;
684 current_line->ending = END_WRAP;
685
686 if (current_line->net_length > 0)
687 {
688 EDIT_UpdateUniscribeData_linedef(es, NULL, current_line);
689 if (current_line->ssa)
690 {
691 sz = ScriptString_pSize(current_line->ssa);
692 current_line->width = sz->cx;
693 }
694 else
695 current_line->width = 0;
696 }
697 else current_line->width = 0;
698 }
699 else if (current_line == start_line &&
700 current_line->index != nstart_index &&
701 orig_net_length < current_line->net_length) {
702 /* The previous line expanded but it's still not as wide as the client rect */
703 /* The expansion is due to an upwards line wrap so we must partially include
704 it in the update region */
705 nstart_line = line_index;
706 nstart_index = current_line->index;
707 istart = current_line->index + orig_net_length;
708 }
709 }
710
711
712 /* Adjust length to include line termination */
713 switch (current_line->ending) {
714 case END_SOFT:
715 current_line->length = current_line->net_length + 3;
716 break;
717 case END_RICH:
718 current_line->length = current_line->net_length + 1;
719 break;
720 case END_HARD:
721 current_line->length = current_line->net_length + 2;
722 break;
723 case END_WRAP:
724 case END_0:
725 current_line->length = current_line->net_length;
726 break;
727 }
728 es->text_width = max(es->text_width, current_line->width);
729 current_position += current_line->length;
730 previous_line = current_line;
731
732 /* Discard data for non-visible lines. It will be calculated as needed */
733 if ((line_index < es->y_offset) || (line_index > es->y_offset + vlc))
734 EDIT_InvalidateUniscribeData_linedef(current_line);
735
736 current_line = current_line->next;
737 line_index++;
738 } while (previous_line->ending != END_0);
739
740 /* Finish adjusting line indexes by delta or remove hanging lines */
741 if (previous_line->ending == END_0)
742 {
743 LINEDEF *pnext = NULL;
744
745 previous_line->next = NULL;
746 while (current_line)
747 {
748 pnext = current_line->next;
749 EDIT_InvalidateUniscribeData_linedef(current_line);
750 HeapFree(GetProcessHeap(), 0, current_line);
751 current_line = pnext;
752 es->line_count--;
753 }
754 }
755 else if (delta != 0)
756 {
757 while (current_line)
758 {
759 current_line->index += delta;
760 current_line = current_line->next;
761 }
762 }
763
764 /* Calculate rest of modification rectangle */
765 if (hrgn)
766 {
767 HRGN tmphrgn;
768 /*
769 * We calculate two rectangles. One for the first line which may have
770 * an indent with respect to the format rect. The other is a format-width
771 * rectangle that spans the rest of the lines that changed or moved.
772 */
773 rc.top = es->format_rect.top + nstart_line * es->line_height -
774 (es->y_offset * es->line_height); /* Adjust for vertical scrollbar */
775 rc.bottom = rc.top + es->line_height;
776 if ((es->style & ES_CENTER) || (es->style & ES_RIGHT))
777 rc.left = es->format_rect.left;
778 else
779 rc.left = LOWORD(EDIT_EM_PosFromChar(es, nstart_index, FALSE));
780 rc.right = es->format_rect.right;
781 SetRectRgn(hrgn, rc.left, rc.top, rc.right, rc.bottom);
782
783 rc.top = rc.bottom;
784 rc.left = es->format_rect.left;
785 rc.right = es->format_rect.right;
786 /*
787 * If lines were added or removed we must re-paint the remainder of the
788 * lines since the remaining lines were either shifted up or down.
789 */
790 if (line_count < es->line_count) /* We added lines */
791 rc.bottom = es->line_count * es->line_height;
792 else if (line_count > es->line_count) /* We removed lines */
793 rc.bottom = line_count * es->line_height;
794 else
795 rc.bottom = line_index * es->line_height;
796 rc.bottom += es->format_rect.top;
797 rc.bottom -= (es->y_offset * es->line_height); /* Adjust for vertical scrollbar */
798 tmphrgn = CreateRectRgn(rc.left, rc.top, rc.right, rc.bottom);
799 CombineRgn(hrgn, hrgn, tmphrgn, RGN_OR);
800 DeleteObject(tmphrgn);
801 }
802 }
803
804 /*********************************************************************
805 *
806 * EDIT_CalcLineWidth_SL
807 *
808 */
809 static void EDIT_CalcLineWidth_SL(EDITSTATE *es)
810 {
811 EDIT_UpdateUniscribeData(es, NULL, 0);
812 if (es->ssa)
813 {
814 const SIZE *size;
815 size = ScriptString_pSize(es->ssa);
816 es->text_width = size->cx;
817 }
818 else
819 es->text_width = 0;
820 }
821
822 /*********************************************************************
823 *
824 * EDIT_CharFromPos
825 *
826 * Beware: This is not the function called on EM_CHARFROMPOS
827 * The position _can_ be outside the formatting / client
828 * rectangle
829 * The return value is only the character index
830 *
831 */
832 static INT EDIT_CharFromPos(EDITSTATE *es, INT x, INT y, LPBOOL after_wrap)
833 {
834 INT index;
835
836 if (es->style & ES_MULTILINE) {
837 int trailing;
838 INT line = (y - es->format_rect.top) / es->line_height + es->y_offset;
839 INT line_index = 0;
840 LINEDEF *line_def = es->first_line_def;
841 EDIT_UpdateUniscribeData(es, NULL, line);
842 while ((line > 0) && line_def->next) {
843 line_index += line_def->length;
844 line_def = line_def->next;
845 line--;
846 }
847
848 x += es->x_offset - es->format_rect.left;
849 if (es->style & ES_RIGHT)
850 x -= (es->format_rect.right - es->format_rect.left) - line_def->width;
851 else if (es->style & ES_CENTER)
852 x -= ((es->format_rect.right - es->format_rect.left) - line_def->width) / 2;
853 if (x >= line_def->width) {
854 if (after_wrap)
855 *after_wrap = (line_def->ending == END_WRAP);
856 return line_index + line_def->net_length;
857 }
858 if (x <= 0 || !line_def->ssa) {
859 if (after_wrap)
860 *after_wrap = FALSE;
861 return line_index;
862 }
863
864 ScriptStringXtoCP(line_def->ssa, x , &index, &trailing);
865 if (trailing) index++;
866 index += line_index;
867 if (after_wrap)
868 *after_wrap = ((index == line_index + line_def->net_length) &&
869 (line_def->ending == END_WRAP));
870 } else {
871 INT xoff = 0;
872 INT trailing;
873 if (after_wrap)
874 *after_wrap = FALSE;
875 x -= es->format_rect.left;
876 if (!x)
877 return es->x_offset;
878
879 if (!es->x_offset)
880 {
881 INT indent = (es->format_rect.right - es->format_rect.left) - es->text_width;
882 if (es->style & ES_RIGHT)
883 x -= indent;
884 else if (es->style & ES_CENTER)
885 x -= indent / 2;
886 }
887
888 EDIT_UpdateUniscribeData(es, NULL, 0);
889 if (es->x_offset)
890 {
891 if (es->ssa)
892 {
893 if (es->x_offset>= get_text_length(es))
894 {
895 const SIZE *size;
896 size = ScriptString_pSize(es->ssa);
897 xoff = size->cx;
898 }
899 ScriptStringCPtoX(es->ssa, es->x_offset, FALSE, &xoff);
900 }
901 else
902 xoff = 0;
903 }
904 if (x < 0)
905 {
906 if (x + xoff > 0 || !es->ssa)
907 {
908 ScriptStringXtoCP(es->ssa, x+xoff, &index, &trailing);
909 if (trailing) index++;
910 }
911 else
912 index = 0;
913 }
914 else
915 {
916 if (x)
917 {
918 const SIZE *size = NULL;
919 if (es->ssa)
920 size = ScriptString_pSize(es->ssa);
921 if (!size)
922 index = 0;
923 else if (x > size->cx)
924 index = get_text_length(es);
925 else if (es->ssa)
926 {
927 ScriptStringXtoCP(es->ssa, x+xoff, &index, &trailing);
928 if (trailing) index++;
929 }
930 else
931 index = 0;
932 }
933 else
934 index = es->x_offset;
935 }
936 }
937 return index;
938 }
939
940
941 /*********************************************************************
942 *
943 * EDIT_ConfinePoint
944 *
945 * adjusts the point to be within the formatting rectangle
946 * (so CharFromPos returns the nearest _visible_ character)
947 *
948 */
949 static void EDIT_ConfinePoint(const EDITSTATE *es, LPINT x, LPINT y)
950 {
951 *x = min(max(*x, es->format_rect.left), es->format_rect.right - 1);
952 *y = min(max(*y, es->format_rect.top), es->format_rect.bottom - 1);
953 }
954
955
956 /*********************************************************************
957 *
958 * EM_LINEFROMCHAR
959 *
960 */
961 static INT EDIT_EM_LineFromChar(EDITSTATE *es, INT index)
962 {
963 INT line;
964 LINEDEF *line_def;
965
966 if (!(es->style & ES_MULTILINE))
967 return 0;
968 if (index > (INT)get_text_length(es))
969 return es->line_count - 1;
970 if (index == -1)
971 index = min(es->selection_start, es->selection_end);
972
973 line = 0;
974 line_def = es->first_line_def;
975 index -= line_def->length;
976 while ((index >= 0) && line_def->next) {
977 line++;
978 line_def = line_def->next;
979 index -= line_def->length;
980 }
981 return line;
982 }
983
984
985 /*********************************************************************
986 *
987 * EM_LINEINDEX
988 *
989 */
990 static INT EDIT_EM_LineIndex(const EDITSTATE *es, INT line)
991 {
992 INT line_index;
993 const LINEDEF *line_def;
994
995 if (!(es->style & ES_MULTILINE))
996 return 0;
997 if (line >= es->line_count)
998 return -1;
999
1000 line_index = 0;
1001 line_def = es->first_line_def;
1002 if (line == -1) {
1003 INT index = es->selection_end - line_def->length;
1004 while ((index >= 0) && line_def->next) {
1005 line_index += line_def->length;
1006 line_def = line_def->next;
1007 index -= line_def->length;
1008 }
1009 } else {
1010 while (line > 0) {
1011 line_index += line_def->length;
1012 line_def = line_def->next;
1013 line--;
1014 }
1015 }
1016 return line_index;
1017 }
1018
1019
1020 /*********************************************************************
1021 *
1022 * EM_LINELENGTH
1023 *
1024 */
1025 static INT EDIT_EM_LineLength(EDITSTATE *es, INT index)
1026 {
1027 LINEDEF *line_def;
1028
1029 if (!(es->style & ES_MULTILINE))
1030 return get_text_length(es);
1031
1032 if (index == -1) {
1033 /* get the number of remaining non-selected chars of selected lines */
1034 INT32 l; /* line number */
1035 INT32 li; /* index of first char in line */
1036 INT32 count;
1037 l = EDIT_EM_LineFromChar(es, es->selection_start);
1038 /* # chars before start of selection area */
1039 count = es->selection_start - EDIT_EM_LineIndex(es, l);
1040 l = EDIT_EM_LineFromChar(es, es->selection_end);
1041 /* # chars after end of selection */
1042 li = EDIT_EM_LineIndex(es, l);
1043 count += li + EDIT_EM_LineLength(es, li) - es->selection_end;
1044 return count;
1045 }
1046 line_def = es->first_line_def;
1047 index -= line_def->length;
1048 while ((index >= 0) && line_def->next) {
1049 line_def = line_def->next;
1050 index -= line_def->length;
1051 }
1052 return line_def->net_length;
1053 }
1054
1055
1056 /*********************************************************************
1057 *
1058 * EM_POSFROMCHAR
1059 *
1060 */
1061 static LRESULT EDIT_EM_PosFromChar(EDITSTATE *es, INT index, BOOL after_wrap)
1062 {
1063 INT len = get_text_length(es);
1064 INT l;
1065 INT li;
1066 INT x = 0;
1067 INT y = 0;
1068 INT w;
1069 INT lw;
1070 LINEDEF *line_def;
1071
1072 index = min(index, len);
1073 if (es->style & ES_MULTILINE) {
1074 l = EDIT_EM_LineFromChar(es, index);
1075 EDIT_UpdateUniscribeData(es, NULL, l);
1076
1077 y = (l - es->y_offset) * es->line_height;
1078 li = EDIT_EM_LineIndex(es, l);
1079 if (after_wrap && (li == index) && l) {
1080 INT l2 = l - 1;
1081 line_def = es->first_line_def;
1082 while (l2) {
1083 line_def = line_def->next;
1084 l2--;
1085 }
1086 if (line_def->ending == END_WRAP) {
1087 l--;
1088 y -= es->line_height;
1089 li = EDIT_EM_LineIndex(es, l);
1090 }
1091 }
1092
1093 line_def = es->first_line_def;
1094 while (line_def->index != li)
1095 line_def = line_def->next;
1096
1097 lw = line_def->width;
1098 w = es->format_rect.right - es->format_rect.left;
1099 if (line_def->ssa)
1100 {
1101 ScriptStringCPtoX(line_def->ssa, (index - 1) - li, TRUE, &x);
1102 x -= es->x_offset;
1103 }
1104 else
1105 x = es->x_offset;
1106
1107 if (es->style & ES_RIGHT)
1108 x = w - (lw - x);
1109 else if (es->style & ES_CENTER)
1110 x += (w - lw) / 2;
1111 } else {
1112 INT xoff = 0;
1113 INT xi = 0;
1114 EDIT_UpdateUniscribeData(es, NULL, 0);
1115 if (es->x_offset)
1116 {
1117 if (es->ssa)
1118 {
1119 if (es->x_offset >= get_text_length(es))
1120 {
1121 int leftover = es->x_offset - get_text_length(es);
1122 if (es->ssa)
1123 {
1124 const SIZE *size;
1125 size = ScriptString_pSize(es->ssa);
1126 xoff = size->cx;
1127 }
1128 else
1129 xoff = 0;
1130 xoff += es->char_width * leftover;
1131 }
1132 else
1133 ScriptStringCPtoX(es->ssa, es->x_offset, FALSE, &xoff);
1134 }
1135 else
1136 xoff = 0;
1137 }
1138 if (index)
1139 {
1140 if (index >= get_text_length(es))
1141 {
1142 if (es->ssa)
1143 {
1144 const SIZE *size;
1145 size = ScriptString_pSize(es->ssa);
1146 xi = size->cx;
1147 }
1148 else
1149 xi = 0;
1150 }
1151 else if (es->ssa)
1152 ScriptStringCPtoX(es->ssa, index, FALSE, &xi);
1153 else
1154 xi = 0;
1155 }
1156 x = xi - xoff;
1157
1158 if (index >= es->x_offset) {
1159 if (!es->x_offset && (es->style & (ES_RIGHT | ES_CENTER)))
1160 {
1161 w = es->format_rect.right - es->format_rect.left;
1162 if (w > es->text_width)
1163 {
1164 if (es->style & ES_RIGHT)
1165 x += w - es->text_width;
1166 else if (es->style & ES_CENTER)
1167 x += (w - es->text_width) / 2;
1168 }
1169 }
1170 }
1171 y = 0;
1172 }
1173 x += es->format_rect.left;
1174 y += es->format_rect.top;
1175 return MAKELONG((INT16)x, (INT16)y);
1176 }
1177
1178
1179 /*********************************************************************
1180 *
1181 * EDIT_GetLineRect
1182 *
1183 * Calculates the bounding rectangle for a line from a starting
1184 * column to an ending column.
1185 *
1186 */
1187 static void EDIT_GetLineRect(EDITSTATE *es, INT line, INT scol, INT ecol, LPRECT rc)
1188 {
1189 SCRIPT_STRING_ANALYSIS ssa;
1190 INT line_index = 0;
1191 INT pt1, pt2, pt3;
1192
1193 if (es->style & ES_MULTILINE)
1194 {
1195 const LINEDEF *line_def = NULL;
1196 rc->top = es->format_rect.top + (line - es->y_offset) * es->line_height;
1197 if (line >= es->line_count)
1198 return;
1199
1200 line_def = es->first_line_def;
1201 if (line == -1) {
1202 INT index = es->selection_end - line_def->length;
1203 while ((index >= 0) && line_def->next) {
1204 line_index += line_def->length;
1205 line_def = line_def->next;
1206 index -= line_def->length;
1207 }
1208 } else {
1209 while (line > 0) {
1210 line_index += line_def->length;
1211 line_def = line_def->next;
1212 line--;
1213 }
1214 }
1215 ssa = line_def->ssa;
1216 }
1217 else
1218 {
1219 line_index = 0;
1220 rc->top = es->format_rect.top;
1221 ssa = es->ssa;
1222 }
1223
1224 rc->bottom = rc->top + es->line_height;
1225 pt1 = (scol == 0) ? es->format_rect.left : (short)LOWORD(EDIT_EM_PosFromChar(es, line_index + scol, TRUE));
1226 pt2 = (ecol == -1) ? es->format_rect.right : (short)LOWORD(EDIT_EM_PosFromChar(es, line_index + ecol, TRUE));
1227 if (ssa)
1228 {
1229 ScriptStringCPtoX(ssa, scol, FALSE, &pt3);
1230 pt3+=es->format_rect.left;
1231 }
1232 else pt3 = pt1;
1233 rc->right = max(max(pt1 , pt2),pt3);
1234 rc->left = min(min(pt1, pt2),pt3);
1235 }
1236
1237
1238 static inline void text_buffer_changed(EDITSTATE *es)
1239 {
1240 es->text_length = (UINT)-1;
1241
1242 HeapFree( GetProcessHeap(), 0, es->logAttr );
1243 es->logAttr = NULL;
1244 EDIT_InvalidateUniscribeData(es);
1245 }
1246
1247 /*********************************************************************
1248 * EDIT_LockBuffer
1249 *
1250 */
1251 static void EDIT_LockBuffer(EDITSTATE *es)
1252 {
1253 if (!es->text) {
1254
1255 if(!es->hloc32W) return;
1256
1257 if(es->hloc32A)
1258 {
1259 CHAR *textA = LocalLock(es->hloc32A);
1260 HLOCAL hloc32W_new;
1261 UINT countW_new = MultiByteToWideChar(CP_ACP, 0, textA, -1, NULL, 0);
1262 if(countW_new > es->buffer_size + 1)
1263 {
1264 UINT alloc_size = ROUND_TO_GROW(countW_new * sizeof(WCHAR));
1265 TRACE("Resizing 32-bit UNICODE buffer from %d+1 to %d WCHARs\n", es->buffer_size, countW_new);
1266 hloc32W_new = LocalReAlloc(es->hloc32W, alloc_size, LMEM_MOVEABLE | LMEM_ZEROINIT);
1267 if(hloc32W_new)
1268 {
1269 es->hloc32W = hloc32W_new;
1270 es->buffer_size = LocalSize(hloc32W_new)/sizeof(WCHAR) - 1;
1271 TRACE("Real new size %d+1 WCHARs\n", es->buffer_size);
1272 }
1273 else
1274 WARN("FAILED! Will synchronize partially\n");
1275 }
1276 es->text = LocalLock(es->hloc32W);
1277 MultiByteToWideChar(CP_ACP, 0, textA, -1, es->text, es->buffer_size + 1);
1278 LocalUnlock(es->hloc32A);
1279 }
1280 else es->text = LocalLock(es->hloc32W);
1281 }
1282 es->lock_count++;
1283 }
1284
1285
1286 /*********************************************************************
1287 *
1288 * EDIT_UnlockBuffer
1289 *
1290 */
1291 static void EDIT_UnlockBuffer(EDITSTATE *es, BOOL force)
1292 {
1293 /* Edit window might be already destroyed */
1294 if(!IsWindow(es->hwndSelf))
1295 {
1296 WARN("edit hwnd %p already destroyed\n", es->hwndSelf);
1297 return;
1298 }
1299
1300 if (!es->lock_count) {
1301 ERR("lock_count == 0 ... please report\n");
1302 return;
1303 }
1304 if (!es->text) {
1305 ERR("es->text == 0 ... please report\n");
1306 return;
1307 }
1308 if (force || (es->lock_count == 1)) {
1309 if (es->hloc32W) {
1310 UINT countA = 0;
1311 UINT countW = get_text_length(es) + 1;
1312
1313 if(es->hloc32A)
1314 {
1315 UINT countA_new = WideCharToMultiByte(CP_ACP, 0, es->text, countW, NULL, 0, NULL, NULL);
1316 TRACE("Synchronizing with 32-bit ANSI buffer\n");
1317 TRACE("%d WCHARs translated to %d bytes\n", countW, countA_new);
1318 countA = LocalSize(es->hloc32A);
1319 if(countA_new > countA)
1320 {
1321 HLOCAL hloc32A_new;
1322 UINT alloc_size = ROUND_TO_GROW(countA_new);
1323 TRACE("Resizing 32-bit ANSI buffer from %d to %d bytes\n", countA, alloc_size);
1324 hloc32A_new = LocalReAlloc(es->hloc32A, alloc_size, LMEM_MOVEABLE | LMEM_ZEROINIT);
1325 if(hloc32A_new)
1326 {
1327 es->hloc32A = hloc32A_new;
1328 countA = LocalSize(hloc32A_new);
1329 TRACE("Real new size %d bytes\n", countA);
1330 }
1331 else
1332 WARN("FAILED! Will synchronize partially\n");
1333 }
1334 WideCharToMultiByte(CP_ACP, 0, es->text, countW,
1335 LocalLock(es->hloc32A), countA, NULL, NULL);
1336 LocalUnlock(es->hloc32A);
1337 }
1338
1339 LocalUnlock(es->hloc32W);
1340 es->text = NULL;
1341 }
1342 else {
1343 ERR("no buffer ... please report\n");
1344 return;
1345 }
1346 }
1347 es->lock_count--;
1348 }
1349
1350
1351 /*********************************************************************
1352 *
1353 * EDIT_MakeFit
1354 *
1355 * Try to fit size + 1 characters in the buffer.
1356 */
1357 static BOOL EDIT_MakeFit(EDITSTATE *es, UINT size)
1358 {
1359 HLOCAL hNew32W;
1360
1361 if (size <= es->buffer_size)
1362 return TRUE;
1363
1364 TRACE("trying to ReAlloc to %d+1 characters\n", size);
1365
1366 /* Force edit to unlock its buffer. es->text now NULL */
1367 EDIT_UnlockBuffer(es, TRUE);
1368
1369 if (es->hloc32W) {
1370 UINT alloc_size = ROUND_TO_GROW((size + 1) * sizeof(WCHAR));
1371 if ((hNew32W = LocalReAlloc(es->hloc32W, alloc_size, LMEM_MOVEABLE | LMEM_ZEROINIT))) {
1372 TRACE("Old 32 bit handle %p, new handle %p\n", es->hloc32W, hNew32W);
1373 es->hloc32W = hNew32W;
1374 es->buffer_size = LocalSize(hNew32W)/sizeof(WCHAR) - 1;
1375 }
1376 }
1377
1378 EDIT_LockBuffer(es);
1379
1380 if (es->buffer_size < size) {
1381 WARN("FAILED ! We now have %d+1\n", es->buffer_size);
1382 EDIT_NOTIFY_PARENT(es, EN_ERRSPACE);
1383 return FALSE;
1384 } else {
1385 TRACE("We now have %d+1\n", es->buffer_size);
1386 return TRUE;
1387 }
1388 }
1389
1390
1391 /*********************************************************************
1392 *
1393 * EDIT_MakeUndoFit
1394 *
1395 * Try to fit size + 1 bytes in the undo buffer.
1396 *
1397 */
1398 static BOOL EDIT_MakeUndoFit(EDITSTATE *es, UINT size)
1399 {
1400 UINT alloc_size;
1401
1402 if (size <= es->undo_buffer_size)
1403 return TRUE;
1404
1405 TRACE("trying to ReAlloc to %d+1\n", size);
1406
1407 alloc_size = ROUND_TO_GROW((size + 1) * sizeof(WCHAR));
1408 if ((es->undo_text = HeapReAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, es->undo_text, alloc_size))) {
1409 es->undo_buffer_size = alloc_size/sizeof(WCHAR) - 1;
1410 return TRUE;
1411 }
1412 else
1413 {
1414 WARN("FAILED ! We now have %d+1\n", es->undo_buffer_size);
1415 return FALSE;
1416 }
1417 }
1418
1419
1420 /*********************************************************************
1421 *
1422 * EDIT_UpdateTextRegion
1423 *
1424 */
1425 static void EDIT_UpdateTextRegion(EDITSTATE *es, HRGN hrgn, BOOL bErase)
1426 {
1427 if (es->flags & EF_UPDATE) {
1428 es->flags &= ~EF_UPDATE;
1429 EDIT_NOTIFY_PARENT(es, EN_UPDATE);
1430 }
1431 InvalidateRgn(es->hwndSelf, hrgn, bErase);
1432 }
1433
1434
1435 /*********************************************************************
1436 *
1437 * EDIT_UpdateText
1438 *
1439 */
1440 static void EDIT_UpdateText(EDITSTATE *es, const RECT *rc, BOOL bErase)
1441 {
1442 if (es->flags & EF_UPDATE) {
1443 es->flags &= ~EF_UPDATE;
1444 EDIT_NOTIFY_PARENT(es, EN_UPDATE);
1445 }
1446 InvalidateRect(es->hwndSelf, rc, bErase);
1447 }
1448
1449 /*********************************************************************
1450 *
1451 * EDIT_SL_InvalidateText
1452 *
1453 * Called from EDIT_InvalidateText().
1454 * Does the job for single-line controls only.
1455 *
1456 */
1457 static void EDIT_SL_InvalidateText(EDITSTATE *es, INT start, INT end)
1458 {
1459 RECT line_rect;
1460 RECT rc;
1461
1462 EDIT_GetLineRect(es, 0, start, end, &line_rect);
1463 if (IntersectRect(&rc, &line_rect, &es->format_rect))
1464 EDIT_UpdateText(es, &rc, TRUE);
1465 }
1466
1467 /*********************************************************************
1468 *
1469 * EDIT_ML_InvalidateText
1470 *
1471 * Called from EDIT_InvalidateText().
1472 * Does the job for multi-line controls only.
1473 *
1474 */
1475 static void EDIT_ML_InvalidateText(EDITSTATE *es, INT start, INT end)
1476 {
1477 INT vlc = get_vertical_line_count(es);
1478 INT sl = EDIT_EM_LineFromChar(es, start);
1479 INT el = EDIT_EM_LineFromChar(es, end);
1480 INT sc;
1481 INT ec;
1482 RECT rc1;
1483 RECT rcWnd;
1484 RECT rcLine;
1485 RECT rcUpdate;
1486 INT l;
1487
1488 if ((el < es->y_offset) || (sl > es->y_offset + vlc))
1489 return;
1490
1491 sc = start - EDIT_EM_LineIndex(es, sl);
1492 ec = end - EDIT_EM_LineIndex(es, el);
1493 if (sl < es->y_offset) {
1494 sl = es->y_offset;
1495 sc = 0;
1496 }
1497 if (el > es->y_offset + vlc) {
1498 el = es->y_offset + vlc;
1499 ec = EDIT_EM_LineLength(es, EDIT_EM_LineIndex(es, el));
1500 }
1501 GetClientRect(es->hwndSelf, &rc1);
1502 IntersectRect(&rcWnd, &rc1, &es->format_rect);
1503 if (sl == el) {
1504 EDIT_GetLineRect(es, sl, sc, ec, &rcLine);
1505 if (IntersectRect(&rcUpdate, &rcWnd, &rcLine))
1506 EDIT_UpdateText(es, &rcUpdate, TRUE);
1507 } else {
1508 EDIT_GetLineRect(es, sl, sc,
1509 EDIT_EM_LineLength(es,
1510 EDIT_EM_LineIndex(es, sl)),
1511 &rcLine);
1512 if (IntersectRect(&rcUpdate, &rcWnd, &rcLine))
1513 EDIT_UpdateText(es, &rcUpdate, TRUE);
1514 for (l = sl + 1 ; l < el ; l++) {
1515 EDIT_GetLineRect(es, l, 0,
1516 EDIT_EM_LineLength(es,
1517 EDIT_EM_LineIndex(es, l)),
1518 &rcLine);
1519 if (IntersectRect(&rcUpdate, &rcWnd, &rcLine))
1520 EDIT_UpdateText(es, &rcUpdate, TRUE);
1521 }
1522 EDIT_GetLineRect(es, el, 0, ec, &rcLine);
1523 if (IntersectRect(&rcUpdate, &rcWnd, &rcLine))
1524 EDIT_UpdateText(es, &rcUpdate, TRUE);
1525 }
1526 }
1527
1528
1529 /*********************************************************************
1530 *
1531 * EDIT_InvalidateText
1532 *
1533 * Invalidate the text from offset start up to, but not including,
1534 * offset end. Useful for (re)painting the selection.
1535 * Regions outside the linewidth are not invalidated.
1536 * end == -1 means end == TextLength.
1537 * start and end need not be ordered.
1538 *
1539 */
1540 static void EDIT_InvalidateText(EDITSTATE *es, INT start, INT end)
1541 {
1542 if (end == start)
1543 return;
1544
1545 if (end == -1)
1546 end = get_text_length(es);
1547
1548 if (end < start) {
1549 INT tmp = start;
1550 start = end;
1551 end = tmp;
1552 }
1553
1554 if (es->style & ES_MULTILINE)
1555 EDIT_ML_InvalidateText(es, start, end);
1556 else
1557 EDIT_SL_InvalidateText(es, start, end);
1558 }
1559
1560
1561 /*********************************************************************
1562 *
1563 * EDIT_EM_SetSel
1564 *
1565 * note: unlike the specs say: the order of start and end
1566 * _is_ preserved in Windows. (i.e. start can be > end)
1567 * In other words: this handler is OK
1568 *
1569 */
1570 static void EDIT_EM_SetSel(EDITSTATE *es, UINT start, UINT end, BOOL after_wrap)
1571 {
1572 UINT old_start = es->selection_start;
1573 UINT old_end = es->selection_end;
1574 UINT len = get_text_length(es);
1575
1576 if (start == (UINT)-1) {
1577 start = es->selection_end;
1578 end = es->selection_end;
1579 } else {
1580 start = min(start, len);
1581 end = min(end, len);
1582 }
1583 es->selection_start = start;
1584 es->selection_end = end;
1585 if (after_wrap)
1586 es->flags |= EF_AFTER_WRAP;
1587 else
1588 es->flags &= ~EF_AFTER_WRAP;
1589 /* Compute the necessary invalidation region. */
1590 /* Note that we don't need to invalidate regions which have
1591 * "never" been selected, or those which are "still" selected.
1592 * In fact, every time we hit a selection boundary, we can
1593 * *toggle* whether we need to invalidate. Thus we can optimize by
1594 * *sorting* the interval endpoints. Let's assume that we sort them
1595 * in this order:
1596 * start <= end <= old_start <= old_end
1597 * Knuth 5.3.1 (p 183) assures us that this can be done optimally
1598 * in 5 comparisons; i.e. it is impossible to do better than the
1599 * following: */
1600 ORDER_UINT(end, old_end);
1601 ORDER_UINT(start, old_start);
1602 ORDER_UINT(old_start, old_end);
1603 ORDER_UINT(start, end);
1604 /* Note that at this point 'end' and 'old_start' are not in order, but
1605 * start is definitely the min. and old_end is definitely the max. */
1606 if (end != old_start)
1607 {
1608 /*
1609 * One can also do
1610 * ORDER_UINT32(end, old_start);
1611 * EDIT_InvalidateText(es, start, end);
1612 * EDIT_InvalidateText(es, old_start, old_end);
1613 * in place of the following if statement.
1614 * (That would complete the optimal five-comparison four-element sort.)
1615 */
1616 if (old_start > end )
1617 {
1618 EDIT_InvalidateText(es, start, end);
1619 EDIT_InvalidateText(es, old_start, old_end);
1620 }
1621 else
1622 {
1623 EDIT_InvalidateText(es, start, old_start);
1624 EDIT_InvalidateText(es, end, old_end);
1625 }
1626 }
1627 else EDIT_InvalidateText(es, start, old_end);
1628 }
1629
1630
1631 /*********************************************************************
1632 *
1633 * EDIT_UpdateScrollInfo
1634 *
1635 */
1636 static void EDIT_UpdateScrollInfo(EDITSTATE *es)
1637 {
1638 if ((es->style & WS_VSCROLL) && !(es->flags & EF_VSCROLL_TRACK))
1639 {
1640 SCROLLINFO si;
1641 si.cbSize = sizeof(SCROLLINFO);
1642 si.fMask = SIF_PAGE | SIF_POS | SIF_RANGE | SIF_DISABLENOSCROLL;
1643 si.nMin = 0;
1644 si.nMax = es->line_count - 1;
1645 si.nPage = (es->format_rect.bottom - es->format_rect.top) / es->line_height;
1646 si.nPos = es->y_offset;
1647 TRACE("SB_VERT, nMin=%d, nMax=%d, nPage=%d, nPos=%d\n",
1648 si.nMin, si.nMax, si.nPage, si.nPos);
1649 SetScrollInfo(es->hwndSelf, SB_VERT, &si, TRUE);
1650 }
1651
1652 if ((es->style & WS_HSCROLL) && !(es->flags & EF_HSCROLL_TRACK))
1653 {
1654 SCROLLINFO si;
1655 si.cbSize = sizeof(SCROLLINFO);
1656 si.fMask = SIF_PAGE | SIF_POS | SIF_RANGE | SIF_DISABLENOSCROLL;
1657 si.nMin = 0;
1658 si.nMax = es->text_width - 1;
1659 si.nPage = es->format_rect.right - es->format_rect.left;
1660 si.nPos = es->x_offset;
1661 TRACE("SB_HORZ, nMin=%d, nMax=%d, nPage=%d, nPos=%d\n",
1662 si.nMin, si.nMax, si.nPage, si.nPos);
1663 SetScrollInfo(es->hwndSelf, SB_HORZ, &si, TRUE);
1664 }
1665 }
1666
1667
1668 /*********************************************************************
1669 *
1670 * EDIT_EM_LineScroll_internal
1671 *
1672 * Version of EDIT_EM_LineScroll for internal use.
1673 * It doesn't refuse if ES_MULTILINE is set and assumes that
1674 * dx is in pixels, dy - in lines.
1675 *
1676 */
1677 static BOOL EDIT_EM_LineScroll_internal(EDITSTATE *es, INT dx, INT dy)
1678 {
1679 INT nyoff;
1680 INT x_offset_in_pixels;
1681 INT lines_per_page = (es->format_rect.bottom - es->format_rect.top) /
1682 es->line_height;
1683
1684 if (es->style & ES_MULTILINE)
1685 {
1686 x_offset_in_pixels = es->x_offset;
1687 }
1688 else
1689 {
1690 dy = 0;
1691 x_offset_in_pixels = (short)LOWORD(EDIT_EM_PosFromChar(es, es->x_offset, FALSE));
1692 }
1693
1694 if (-dx > x_offset_in_pixels)
1695 dx = -x_offset_in_pixels;
1696 if (dx > es->text_width - x_offset_in_pixels)
1697 dx = es->text_width - x_offset_in_pixels;
1698 nyoff = max(0, es->y_offset + dy);
1699 if (nyoff >= es->line_count - lines_per_page)
1700 nyoff = max(0, es->line_count - lines_per_page);
1701 dy = (es->y_offset - nyoff) * es->line_height;
1702 if (dx || dy) {
1703 RECT rc1;
1704 RECT rc;
1705
1706 es->y_offset = nyoff;
1707 if(es->style & ES_MULTILINE)
1708 es->x_offset += dx;
1709 else
1710 es->x_offset += dx / es->char_width;
1711
1712 GetClientRect(es->hwndSelf, &rc1);
1713 IntersectRect(&rc, &rc1, &es->format_rect);
1714 ScrollWindowEx(es->hwndSelf, -dx, dy,
1715 NULL, &rc, NULL, NULL, SW_INVALIDATE);
1716 /* force scroll info update */
1717 EDIT_UpdateScrollInfo(es);
1718 }
1719 if (dx && !(es->flags & EF_HSCROLL_TRACK))
1720 EDIT_NOTIFY_PARENT(es, EN_HSCROLL);
1721 if (dy && !(es->flags & EF_VSCROLL_TRACK))
1722 EDIT_NOTIFY_PARENT(es, EN_VSCROLL);
1723 return TRUE;
1724 }
1725
1726 /*********************************************************************
1727 *
1728 * EM_LINESCROLL
1729 *
1730 * NOTE: dx is in average character widths, dy - in lines;
1731 *
1732 */
1733 static BOOL EDIT_EM_LineScroll(EDITSTATE *es, INT dx, INT dy)
1734 {
1735 if (!(es->style & ES_MULTILINE))
1736 return FALSE;
1737
1738 dx *= es->char_width;
1739 return EDIT_EM_LineScroll_internal(es, dx, dy);
1740 }
1741
1742
1743 /*********************************************************************
1744 *
1745 * EM_SCROLL
1746 *
1747 */
1748 static LRESULT EDIT_EM_Scroll(EDITSTATE *es, INT action)
1749 {
1750 INT dy;
1751
1752 if (!(es->style & ES_MULTILINE))
1753 return (LRESULT)FALSE;
1754
1755 dy = 0;
1756
1757 switch (action) {
1758 case SB_LINEUP:
1759 if (es->y_offset)
1760 dy = -1;
1761 break;
1762 case SB_LINEDOWN:
1763 if (es->y_offset < es->line_count - 1)
1764 dy = 1;
1765 break;
1766 case SB_PAGEUP:
1767 if (es->y_offset)
1768 dy = -(es->format_rect.bottom - es->format_rect.top) / es->line_height;
1769 break;
1770 case SB_PAGEDOWN:
1771 if (es->y_offset < es->line_count - 1)
1772 dy = (es->format_rect.bottom - es->format_rect.top) / es->line_height;
1773 break;
1774 default:
1775 return (LRESULT)FALSE;
1776 }
1777 if (dy) {
1778 INT vlc = get_vertical_line_count(es);
1779 /* check if we are going to move too far */
1780 if(es->y_offset + dy > es->line_count - vlc)
1781 dy = max(es->line_count - vlc, 0) - es->y_offset;
1782
1783 /* Notification is done in EDIT_EM_LineScroll */
1784 if(dy) {
1785 EDIT_EM_LineScroll(es, 0, dy);
1786 return MAKELONG(dy, TRUE);
1787 }
1788
1789 }
1790 return (LRESULT)FALSE;
1791 }
1792
1793
1794 /*********************************************************************
1795 *
1796 * EDIT_SetCaretPos
1797 *
1798 */
1799 static void EDIT_SetCaretPos(EDITSTATE *es, INT pos,
1800 BOOL after_wrap)
1801 {
1802 LRESULT res = EDIT_EM_PosFromChar(es, pos, after_wrap);
1803 TRACE("%d - %dx%d\n", pos, (short)LOWORD(res), (short)HIWORD(res));
1804 SetCaretPos((short)LOWORD(res), (short)HIWORD(res));
1805 }
1806
1807
1808 /*********************************************************************
1809 *
1810 * EM_SCROLLCARET
1811 *
1812 */
1813 static void EDIT_EM_ScrollCaret(EDITSTATE *es)
1814 {
1815 if (es->style & ES_MULTILINE) {
1816 INT l;
1817 INT vlc;
1818 INT ww;
1819 INT cw = es->char_width;
1820 INT x;
1821 INT dy = 0;
1822 INT dx = 0;
1823
1824 l = EDIT_EM_LineFromChar(es, es->selection_end);
1825 x = (short)LOWORD(EDIT_EM_PosFromChar(es, es->selection_end, es->flags & EF_AFTER_WRAP));
1826 vlc = get_vertical_line_count(es);
1827 if (l >= es->y_offset + vlc)
1828 dy = l - vlc + 1 - es->y_offset;
1829 if (l < es->y_offset)
1830 dy = l - es->y_offset;
1831 ww = es->format_rect.right - es->format_rect.left;
1832 if (x < es->format_rect.left)
1833 dx = x - es->format_rect.left - ww / HSCROLL_FRACTION / cw * cw;
1834 if (x > es->format_rect.right)
1835 dx = x - es->format_rect.left - (HSCROLL_FRACTION - 1) * ww / HSCROLL_FRACTION / cw * cw;
1836 if (dy || dx || (es->y_offset && (es->line_count - es->y_offset < vlc)))
1837 {
1838 /* check if we are going to move too far */
1839 if(es->x_offset + dx + ww > es->text_width)
1840 dx = es->text_width - ww - es->x_offset;
1841 if(dx || dy || (es->y_offset && (es->line_count - es->y_offset < vlc)))
1842 EDIT_EM_LineScroll_internal(es, dx, dy);
1843 }
1844 } else {
1845 INT x;
1846 INT goal;
1847 INT format_width;
1848
1849 x = (short)LOWORD(EDIT_EM_PosFromChar(es, es->selection_end, FALSE));
1850 format_width = es->format_rect.right - es->format_rect.left;
1851 if (x < es->format_rect.left) {
1852 goal = es->format_rect.left + format_width / HSCROLL_FRACTION;
1853 do {
1854 es->x_offset--;
1855 x = (short)LOWORD(EDIT_EM_PosFromChar(es, es->selection_end, FALSE));
1856 } while ((x < goal) && es->x_offset);
1857 /* FIXME: use ScrollWindow() somehow to improve performance */
1858 EDIT_UpdateText(es, NULL, TRUE);
1859 } else if (x > es->format_rect.right) {
1860 INT x_last;
1861 INT len = get_text_length(es);
1862 goal = es->format_rect.right - format_width / HSCROLL_FRACTION;
1863 do {
1864 es->x_offset++;
1865 x = (short)LOWORD(EDIT_EM_PosFromChar(es, es->selection_end, FALSE));
1866 x_last = (short)LOWORD(EDIT_EM_PosFromChar(es, len, FALSE));
1867 } while ((x > goal) && (x_last > es->format_rect.right));
1868 /* FIXME: use ScrollWindow() somehow to improve performance */
1869 EDIT_UpdateText(es, NULL, TRUE);
1870 }
1871 }
1872
1873 if(es->flags & EF_FOCUSED)
1874 EDIT_SetCaretPos(es, es->selection_end, es->flags & EF_AFTER_WRAP);
1875 }
1876
1877
1878 /*********************************************************************
1879 *
1880 * EDIT_MoveBackward
1881 *
1882 */
1883 static void EDIT_MoveBackward(EDITSTATE *es, BOOL extend)
1884 {
1885 INT e = es->selection_end;
1886
1887 if (e) {
1888 e--;
1889 if ((es->style & ES_MULTILINE) && e &&
1890 (es->text[e - 1] == '\r') && (es->text[e] == '\n')) {
1891 e--;
1892 if (e && (es->text[e - 1] == '\r'))
1893 e--;
1894 }
1895 }
1896 EDIT_EM_SetSel(es, extend ? es->selection_start : e, e, FALSE);
1897 EDIT_EM_ScrollCaret(es);
1898 }
1899
1900
1901 /*********************************************************************
1902 *
1903 * EDIT_MoveDown_ML
1904 *
1905 * Only for multi line controls
1906 * Move the caret one line down, on a column with the nearest
1907 * x coordinate on the screen (might be a different column).
1908 *
1909 */
1910 static void EDIT_MoveDown_ML(EDITSTATE *es, BOOL extend)
1911 {
1912 INT s = es->selection_start;
1913 INT e = es->selection_end;
1914 BOOL after_wrap = (es->flags & EF_AFTER_WRAP);
1915 LRESULT pos = EDIT_EM_PosFromChar(es, e, after_wrap);
1916 INT x = (short)LOWORD(pos);
1917 INT y = (short)HIWORD(pos);
1918
1919 e = EDIT_CharFromPos(es, x, y + es->line_height, &after_wrap);
1920 if (!extend)
1921 s = e;
1922 EDIT_EM_SetSel(es, s, e, after_wrap);
1923 EDIT_EM_ScrollCaret(es);
1924 }
1925
1926
1927 /*********************************************************************
1928 *
1929 * EDIT_MoveEnd
1930 *
1931 */
1932 static void EDIT_MoveEnd(EDITSTATE *es, BOOL extend, BOOL ctrl)
1933 {
1934 BOOL after_wrap = FALSE;
1935 INT e;
1936
1937 /* Pass a high value in x to make sure of receiving the end of the line */
1938 if (!ctrl && (es->style & ES_MULTILINE))
1939 e = EDIT_CharFromPos(es, 0x3fffffff,
1940 HIWORD(EDIT_EM_PosFromChar(es, es->selection_end, es->flags & EF_AFTER_WRAP)), &after_wrap);
1941 else
1942 e = get_text_length(es);
1943 EDIT_EM_SetSel(es, extend ? es->selection_start : e, e, after_wrap);
1944 EDIT_EM_ScrollCaret(es);
1945 }
1946
1947
1948 /*********************************************************************
1949 *
1950 * EDIT_MoveForward
1951 *
1952 */
1953 static void EDIT_MoveForward(EDITSTATE *es, BOOL extend)
1954 {
1955 INT e = es->selection_end;
1956
1957 if (es->text[e]) {
1958 e++;
1959 if ((es->style & ES_MULTILINE) && (es->text[e - 1] == '\r')) {
1960 if (es->text[e] == '\n')
1961 e++;
1962 else if ((es->text[e] == '\r') && (es->text[e + 1] == '\n'))
1963 e += 2;
1964 }
1965 }
1966 EDIT_EM_SetSel(es, extend ? es->selection_start : e, e, FALSE);
1967 EDIT_EM_ScrollCaret(es);
1968 }
1969
1970
1971 /*********************************************************************
1972 *
1973 * EDIT_MoveHome
1974 *
1975 * Home key: move to beginning of line.
1976 *
1977 */
1978 static void EDIT_MoveHome(EDITSTATE *es, BOOL extend, BOOL ctrl)
1979 {
1980 INT e;
1981
1982 /* Pass the x_offset in x to make sure of receiving the first position of the line */
1983 if (!ctrl && (es->style & ES_MULTILINE))
1984 e = EDIT_CharFromPos(es, -es->x_offset,
1985 HIWORD(EDIT_EM_PosFromChar(es, es->selection_end, es->flags & EF_AFTER_WRAP)), NULL);
1986 else
1987 e = 0;
1988 EDIT_EM_SetSel(es, extend ? es->selection_start : e, e, FALSE);
1989 EDIT_EM_ScrollCaret(es);
1990 }
1991
1992
1993 /*********************************************************************
1994 *
1995 * EDIT_MovePageDown_ML
1996 *
1997 * Only for multi line controls
1998 * Move the caret one page down, on a column with the nearest
1999 * x coordinate on the screen (might be a different column).
2000 *
2001 */
2002 static void EDIT_MovePageDown_ML(EDITSTATE *es, BOOL extend)
2003 {
2004 INT s = es->selection_start;
2005 INT e = es->selection_end;
2006 BOOL after_wrap = (es->flags & EF_AFTER_WRAP);
2007 LRESULT pos = EDIT_EM_PosFromChar(es, e, after_wrap);
2008 INT x = (short)LOWORD(pos);
2009 INT y = (short)HIWORD(pos);
2010
2011 e = EDIT_CharFromPos(es, x,
2012 y + (es->format_rect.bottom - es->format_rect.top),
2013 &after_wrap);
2014 if (!extend)
2015 s = e;
2016 EDIT_EM_SetSel(es, s, e, after_wrap);
2017 EDIT_EM_ScrollCaret(es);
2018 }
2019
2020
2021 /*********************************************************************
2022 *
2023 * EDIT_MovePageUp_ML
2024 *
2025 * Only for multi line controls
2026 * Move the caret one page up, on a column with the nearest
2027 * x coordinate on the screen (might be a different column).
2028 *
2029 */
2030 static void EDIT_MovePageUp_ML(EDITSTATE *es, BOOL extend)
2031 {
2032 INT s = es->selection_start;
2033 INT e = es->selection_end;
2034 BOOL after_wrap = (es->flags & EF_AFTER_WRAP);
2035 LRESULT pos = EDIT_EM_PosFromChar(es, e, after_wrap);
2036 INT x = (short)LOWORD(pos);
2037 INT y = (short)HIWORD(pos);
2038
2039 e = EDIT_CharFromPos(es, x,
2040 y - (es->format_rect.bottom - es->format_rect.top),
2041 &after_wrap);
2042 if (!extend)
2043 s = e;
2044 EDIT_EM_SetSel(es, s, e, after_wrap);
2045 EDIT_EM_ScrollCaret(es);
2046 }
2047
2048
2049 /*********************************************************************
2050 *
2051 * EDIT_MoveUp_ML
2052 *
2053 * Only for multi line controls
2054 * Move the caret one line up, on a column with the nearest
2055 * x coordinate on the screen (might be a different column).
2056 *
2057 */
2058 static void EDIT_MoveUp_ML(EDITSTATE *es, BOOL extend)
2059 {
2060 INT s = es->selection_start;
2061 INT e = es->selection_end;
2062 BOOL after_wrap = (es->flags & EF_AFTER_WRAP);
2063 LRESULT pos = EDIT_EM_PosFromChar(es, e, after_wrap);
2064 INT x = (short)LOWORD(pos);
2065 INT y = (short)HIWORD(pos);
2066
2067 e = EDIT_CharFromPos(es, x, y - es->line_height, &after_wrap);
2068 if (!extend)
2069 s = e;
2070 EDIT_EM_SetSel(es, s, e, after_wrap);
2071 EDIT_EM_ScrollCaret(es);
2072 }
2073
2074
2075 /*********************************************************************
2076 *
2077 * EDIT_MoveWordBackward
2078 *
2079 */
2080 static void EDIT_MoveWordBackward(EDITSTATE *es, BOOL extend)
2081 {
2082 INT s = es->selection_start;
2083 INT e = es->selection_end;
2084 INT l;
2085 INT ll;
2086 INT li;
2087
2088 l = EDIT_EM_LineFromChar(es, e);
2089 ll = EDIT_EM_LineLength(es, e);
2090 li = EDIT_EM_LineIndex(es, l);
2091 if (e - li == 0) {
2092 if (l) {
2093 li = EDIT_EM_LineIndex(es, l - 1);
2094 e = li + EDIT_EM_LineLength(es, li);
2095 }
2096 } else {
2097 e = li + EDIT_CallWordBreakProc(es, li, e - li, ll, WB_LEFT);
2098 }
2099 if (!extend)
2100 s = e;
2101 EDIT_EM_SetSel(es, s, e, FALSE);
2102 EDIT_EM_ScrollCaret(es);
2103 }
2104
2105
2106 /*********************************************************************
2107 *
2108 * EDIT_MoveWordForward
2109 *
2110 */
2111 static void EDIT_MoveWordForward(EDITSTATE *es, BOOL extend)
2112 {
2113 INT s = es->selection_start;
2114 INT e = es->selection_end;
2115 INT l;
2116 INT ll;
2117 INT li;
2118
2119 l = EDIT_EM_LineFromChar(es, e);
2120 ll = EDIT_EM_LineLength(es, e);
2121 li = EDIT_EM_LineIndex(es, l);
2122 if (e - li == ll) {
2123 if ((es->style & ES_MULTILINE) && (l != es->line_count - 1))
2124 e = EDIT_EM_LineIndex(es, l + 1);
2125 } else {
2126 e = li + EDIT_CallWordBreakProc(es,
2127 li, e - li + 1, ll, WB_RIGHT);
2128 }
2129 if (!extend)
2130 s = e;
2131 EDIT_EM_SetSel(es, s, e, FALSE);
2132 EDIT_EM_ScrollCaret(es);
2133 }
2134
2135
2136 /*********************************************************************
2137 *
2138 * EDIT_PaintText
2139 *
2140 */
2141 static INT EDIT_PaintText(EDITSTATE *es, HDC dc, INT x, INT y, INT line, INT col, INT count, BOOL rev)
2142 {
2143 COLORREF BkColor;
2144 COLORREF TextColor;
2145 LOGFONTW underline_font;
2146 HFONT hUnderline = 0;
2147 HFONT old_font = 0;
2148 INT ret;
2149 INT li;
2150 INT BkMode;
2151 SIZE size;
2152
2153 if (!count)
2154 return 0;
2155 BkMode = GetBkMode(dc);
2156 BkColor = GetBkColor(dc);
2157 TextColor = GetTextColor(dc);
2158 if (rev) {
2159 if (es->composition_len == 0)
2160 {
2161 SetBkColor(dc, GetSysColor(COLOR_HIGHLIGHT));
2162 SetTextColor(dc, GetSysColor(COLOR_HIGHLIGHTTEXT));
2163 SetBkMode( dc, OPAQUE);
2164 }
2165 else
2166 {
2167 HFONT current = GetCurrentObject(dc,OBJ_FONT);
2168 GetObjectW(current,sizeof(LOGFONTW),&underline_font);
2169 underline_font.lfUnderline = TRUE;
2170 hUnderline = CreateFontIndirectW(&underline_font);
2171 old_font = SelectObject(dc,hUnderline);
2172 }
2173 }
2174 li = EDIT_EM_LineIndex(es, line);
2175 if (es->style & ES_MULTILINE) {
2176 ret = (INT)LOWORD(TabbedTextOutW(dc, x, y, es->text + li + col, count,
2177 es->tabs_count, es->tabs, es->format_rect.left - es->x_offset));
2178 } else {
2179 TextOutW(dc, x, y, es->text + li + col, count);
2180 GetTextExtentPoint32W(dc, es->text + li + col, count, &size);
2181 ret = size.cx;
2182 }
2183 if (rev) {
2184 if (es->composition_len == 0)
2185 {
2186 SetBkColor(dc, BkColor);
2187 SetTextColor(dc, TextColor);
2188 SetBkMode( dc, BkMode);
2189 }
2190 else
2191 {
2192 if (old_font)
2193 SelectObject(dc,old_font);
2194 if (hUnderline)
2195 DeleteObject(hUnderline);
2196 }
2197 }
2198 return ret;
2199 }
2200
2201
2202 /*********************************************************************
2203 *
2204 * EDIT_PaintLine
2205 *
2206 */
2207 static void EDIT_PaintLine(EDITSTATE *es, HDC dc, INT line, BOOL rev)
2208 {
2209 INT s = 0;
2210 INT e = 0;
2211 INT li = 0;
2212 INT ll = 0;
2213 INT x;
2214 INT y;
2215 LRESULT pos;
2216 SCRIPT_STRING_ANALYSIS ssa;
2217
2218 if (es->style & ES_MULTILINE) {
2219 INT vlc = get_vertical_line_count(es);
2220
2221 if ((line < es->y_offset) || (line > es->y_offset + vlc) || (line >= es->line_count))
2222 return;
2223 } else if (line)
2224 return;
2225
2226 TRACE("line=%d\n", line);
2227
2228 ssa = EDIT_UpdateUniscribeData(es, dc, line);
2229 pos = EDIT_EM_PosFromChar(es, EDIT_EM_LineIndex(es, line), FALSE);
2230 x = (short)LOWORD(pos);
2231 y = (short)HIWORD(pos);
2232
2233 if (es->style & ES_MULTILINE)
2234 {
2235 int line_idx = line;
2236 x = -es->x_offset;
2237 if (es->style & ES_RIGHT || es->style & ES_CENTER)
2238 {
2239 LINEDEF *line_def = es->first_line_def;
2240 int w, lw;
2241
2242 while (line_def && line_idx)
2243 {
2244 line_def = line_def->next;
2245 line_idx--;
2246 }
2247 w = es->format_rect.right - es->format_rect.left;
2248 lw = line_def->width;
2249
2250 if (es->style & ES_RIGHT)
2251 x = w - (lw - x);
2252 else if (es->style & ES_CENTER)
2253 x += (w - lw) / 2;
2254 }
2255 x += es->format_rect.left;
2256 }
2257
2258 if (rev)
2259 {
2260 li = EDIT_EM_LineIndex(es, line);
2261 ll = EDIT_EM_LineLength(es, li);
2262 s = min(es->selection_start, es->selection_end);
2263 e = max(es->selection_start, es->selection_end);
2264 s = min(li + ll, max(li, s));
2265 e = min(li + ll, max(li, e));
2266 }
2267
2268 if (ssa)
2269 ScriptStringOut(ssa, x, y, 0, &es->format_rect, s - li, e - li, FALSE);
2270 else if (rev && (s != e) &&
2271 ((es->flags & EF_FOCUSED) || (es->style & ES_NOHIDESEL))) {
2272 x += EDIT_PaintText(es, dc, x, y, line, 0, s - li, FALSE);
2273 x += EDIT_PaintText(es, dc, x, y, line, s - li, e - s, TRUE);
2274 x += EDIT_PaintText(es, dc, x, y, line, e - li, li + ll - e, FALSE);
2275 } else
2276 x += EDIT_PaintText(es, dc, x, y, line, 0, ll, FALSE);
2277 }
2278
2279
2280 /*********************************************************************
2281 *
2282 * EDIT_AdjustFormatRect
2283 *
2284 * Adjusts the format rectangle for the current font and the
2285 * current client rectangle.
2286 *
2287 */
2288 static void EDIT_AdjustFormatRect(EDITSTATE *es)
2289 {
2290 RECT ClientRect;
2291
2292 es->format_rect.right = max(es->format_rect.right, es->format_rect.left + es->char_width);
2293 if (es->style & ES_MULTILINE)
2294 {
2295 INT fw, vlc, max_x_offset, max_y_offset;
2296
2297 vlc = get_vertical_line_count(es);
2298 es->format_rect.bottom = es->format_rect.top + vlc * es->line_height;
2299
2300 /* correct es->x_offset */
2301 fw = es->format_rect.right - es->format_rect.left;
2302 max_x_offset = es->text_width - fw;
2303 if(max_x_offset < 0) max_x_offset = 0;
2304 if(es->x_offset > max_x_offset)
2305 es->x_offset = max_x_offset;
2306
2307 /* correct es->y_offset */
2308 max_y_offset = es->line_count - vlc;
2309 if(max_y_offset < 0) max_y_offset = 0;
2310 if(es->y_offset > max_y_offset)
2311 es->y_offset = max_y_offset;
2312
2313 /* force scroll info update */
2314 EDIT_UpdateScrollInfo(es);
2315 }
2316 else
2317 /* Windows doesn't care to fix text placement for SL controls */
2318 es->format_rect.bottom = es->format_rect.top + es->line_height;
2319
2320 /* Always stay within the client area */
2321 GetClientRect(es->hwndSelf, &ClientRect);
2322 es->format_rect.bottom = min(es->format_rect.bottom, ClientRect.bottom);
2323
2324 if ((es->style & ES_MULTILINE) && !(es->style & ES_AUTOHSCROLL))
2325 EDIT_BuildLineDefs_ML(es, 0, get_text_length(es), 0, NULL);
2326
2327 EDIT_SetCaretPos(es, es->selection_end, es->flags & EF_AFTER_WRAP);
2328 }
2329
2330
2331 /*********************************************************************
2332 *
2333 * EDIT_SetRectNP
2334 *
2335 * note: this is not (exactly) the handler called on EM_SETRECTNP
2336 * it is also used to set the rect of a single line control
2337 *
2338 */
2339 static void EDIT_SetRectNP(EDITSTATE *es, const RECT *rc)
2340 {
2341 LONG_PTR ExStyle;
2342 INT bw, bh;
2343 ExStyle = GetWindowLongPtrW(es->hwndSelf, GWL_EXSTYLE);
2344
2345 CopyRect(&es->format_rect, rc);
2346
2347 if (ExStyle & WS_EX_CLIENTEDGE) {
2348 es->format_rect.left++;
2349 es->format_rect.right--;
2350
2351 if (es->format_rect.bottom - es->format_rect.top
2352 >= es->line_height + 2)
2353 {
2354 es->format_rect.top++;
2355 es->format_rect.bottom--;
2356 }
2357 }
2358 else if (es->style & WS_BORDER) {
2359 bw = GetSystemMetrics(SM_CXBORDER) + 1;
2360 bh = GetSystemMetrics(SM_CYBORDER) + 1;
2361 InflateRect(&es->format_rect, -bw, 0);
2362 if (es->format_rect.bottom - es->format_rect.top >= es->line_height + 2 * bh)
2363 InflateRect(&es->format_rect, 0, -bh);
2364 }
2365
2366 es->format_rect.left += es->left_margin;
2367 es->format_rect.right -= es->right_margin;
2368 EDIT_AdjustFormatRect(es);
2369 }
2370
2371
2372 /*********************************************************************
2373 *
2374 * EM_CHARFROMPOS
2375 *
2376 * returns line number (not index) in high-order word of result.
2377 * NB : Q137805 is unclear about this. POINT * pointer in lParam apply
2378 * to Richedit, not to the edit control. Original documentation is valid.
2379 * FIXME: do the specs mean to return -1 if outside client area or
2380 * if outside formatting rectangle ???
2381 *
2382 */
2383 static LRESULT EDIT_EM_CharFromPos(EDITSTATE *es, INT x, INT y)
2384 {
2385 POINT pt;
2386 RECT rc;
2387 INT index;
2388
2389 pt.x = x;
2390 pt.y = y;
2391 GetClientRect(es->hwndSelf, &rc);
2392 if (!PtInRect(&rc, pt))
2393 return -1;
2394
2395 index = EDIT_CharFromPos(es, x, y, NULL);
2396 return MAKELONG(index, EDIT_EM_LineFromChar(es, index));
2397 }
2398
2399
2400 /*********************************************************************
2401 *
2402 * EM_FMTLINES
2403 *
2404 * Enable or disable soft breaks.
2405 *
2406 * This means: insert or remove the soft linebreak character (\r\r\n).
2407 * Take care to check if the text still fits the buffer after insertion.
2408 * If not, notify with EN_ERRSPACE.
2409 *
2410 */
2411 static BOOL EDIT_EM_FmtLines(EDITSTATE *es, BOOL add_eol)
2412 {
2413 es->flags &= ~EF_USE_SOFTBRK;
2414 if (add_eol) {
2415 es->flags |= EF_USE_SOFTBRK;
2416 FIXME("soft break enabled, not implemented\n");
2417 }
2418 return add_eol;
2419 }
2420
2421
2422 /*********************************************************************
2423 *
2424 * EM_GETHANDLE
2425 *
2426 * Hopefully this won't fire back at us.
2427 * We always start with a fixed buffer in the local heap.
2428 * Despite of the documentation says that the local heap is used
2429 * only if DS_LOCALEDIT flag is set, NT and 2000 always allocate
2430 * buffer on the local heap.
2431 *
2432 */
2433 static HLOCAL EDIT_EM_GetHandle(EDITSTATE *es)
2434 {
2435 HLOCAL hLocal;
2436
2437 if (!(es->style & ES_MULTILINE))
2438 return 0;
2439
2440 if(es->is_unicode)
2441 hLocal = es->hloc32W;
2442 else
2443 {
2444 if(!es->hloc32A)
2445 {
2446 CHAR *textA;
2447 UINT countA, alloc_size;
2448 TRACE("Allocating 32-bit ANSI alias buffer\n");
2449 countA = WideCharToMultiByte(CP_ACP, 0, es->text, -1, NULL, 0, NULL, NULL);
2450 alloc_size = ROUND_TO_GROW(countA);
2451 if(!(es->hloc32A = LocalAlloc(LMEM_MOVEABLE | LMEM_ZEROINIT, alloc_size)))
2452 {
2453 ERR("Could not allocate %d bytes for 32-bit ANSI alias buffer\n", alloc_size);
2454 return 0;
2455 }
2456 textA = LocalLock(es->hloc32A);
2457 WideCharToMultiByte(CP_ACP, 0, es->text, -1, textA, countA, NULL, NULL);
2458 LocalUnlock(es->hloc32A);
2459 }
2460 hLocal = es->hloc32A;
2461 }
2462
2463 EDIT_UnlockBuffer(es, TRUE);
2464
2465 /* The text buffer handle belongs to the app */
2466 es->hlocapp = hLocal;
2467
2468 TRACE("Returning %p, LocalSize() = %ld\n", hLocal, LocalSize(hLocal));
2469 return hLocal;
2470 }
2471
2472
2473 /*********************************************************************
2474 *
2475 * EM_GETLINE
2476 *
2477 */
2478 static INT EDIT_EM_GetLine(EDITSTATE *es, INT line, LPWSTR dst, BOOL unicode)
2479 {
2480 LPWSTR src;
2481 INT line_len, dst_len;
2482 INT i;
2483
2484 if (es->style & ES_MULTILINE) {
2485 if (line >= es->line_count)
2486 return 0;
2487 } else
2488 line = 0;
2489 i = EDIT_EM_LineIndex(es, line);
2490 src = es->text + i;
2491 line_len = EDIT_EM_LineLength(es, i);
2492 dst_len = *(WORD *)dst;
2493 if(unicode)
2494 {
2495 if(dst_len <= line_len)
2496 {
2497 memcpy(dst, src, dst_len * sizeof(WCHAR));
2498 return dst_len;
2499 }
2500 else /* Append 0 if enough space */
2501 {
2502 memcpy(dst, src, line_len * sizeof(WCHAR));
2503 dst[line_len] = 0;
2504 return line_len;
2505 }
2506 }
2507 else
2508 {
2509 INT ret = WideCharToMultiByte(CP_ACP, 0, src, line_len, (LPSTR)dst, dst_len, NULL, NULL);
2510 if(!ret && line_len) /* Insufficient buffer size */
2511 return dst_len;
2512 if(ret < dst_len) /* Append 0 if enough space */
2513 ((LPSTR)dst)[ret] = 0;
2514 return ret;
2515 }
2516 }
2517
2518
2519 /*********************************************************************
2520 *
2521 * EM_GETSEL
2522 *
2523 */
2524 static LRESULT EDIT_EM_GetSel(const EDITSTATE *es, PUINT start, PUINT end)
2525 {
2526 UINT s = es->selection_start;
2527 UINT e = es->selection_end;
2528
2529 ORDER_UINT(s, e);
2530 if (start)
2531 *start = s;
2532 if (end)
2533 *end = e;
2534 return MAKELONG(s, e);
2535 }
2536
2537
2538 /*********************************************************************
2539 *
2540 * EM_REPLACESEL
2541 *
2542 * FIXME: handle ES_NUMBER and ES_OEMCONVERT here
2543 *
2544 */
2545 static void EDIT_EM_ReplaceSel(EDITSTATE *es, BOOL can_undo, const WCHAR *lpsz_replace, UINT strl,
2546 BOOL send_update, BOOL honor_limit)
2547 {
2548 UINT tl = get_text_length(es);
2549 UINT utl;
2550 UINT s;
2551 UINT e;
2552 UINT i;
2553 UINT size;
2554 LPWSTR p;
2555 HRGN hrgn = 0;
2556 LPWSTR buf = NULL;
2557 UINT bufl;
2558
2559 TRACE("%s, can_undo %d, send_update %d\n",
2560 debugstr_wn(lpsz_replace, strl), can_undo, send_update);
2561
2562 s = es->selection_start;
2563 e = es->selection_end;
2564
2565 EDIT_InvalidateUniscribeData(es);
2566 if ((s == e) && !strl)
2567 return;
2568
2569 ORDER_UINT(s, e);
2570
2571 size = tl - (e - s) + strl;
2572 if (!size)
2573 es->text_width = 0;
2574
2575 /* Issue the EN_MAXTEXT notification and continue with replacing text
2576 * so that buffer limit is honored. */
2577 if ((honor_limit) && (size > es->buffer_limit)) {
2578 EDIT_NOTIFY_PARENT(es, EN_MAXTEXT);
2579 /* Buffer limit can be smaller than the actual length of text in combobox */
2580 if (es->buffer_limit < (tl - (e-s)))
2581 strl = 0;
2582 else
2583 strl = min(strl, es->buffer_limit - (tl - (e-s)));
2584 }
2585
2586 if (!EDIT_MakeFit(es, tl - (e - s) + strl))
2587 return;
2588
2589 if (e != s) {
2590 /* there is something to be deleted */
2591 TRACE("deleting stuff.\n");
2592 bufl = e - s;
2593 buf = HeapAlloc(GetProcessHeap(), 0, (bufl + 1) * sizeof(WCHAR));
2594 if (!buf) return;
2595 memcpy(buf, es->text + s, bufl * sizeof(WCHAR));
2596 buf[bufl] = 0; /* ensure 0 termination */
2597 /* now delete */
2598 strcpyW(es->text + s, es->text + e);
2599 text_buffer_changed(es);
2600 }
2601 if (strl) {
2602 /* there is an insertion */
2603 tl = get_text_length(es);
2604 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));
2605 for (p = es->text + tl ; p >= es->text + s ; p--)
2606 p[strl] = p[0];
2607 for (i = 0 , p = es->text + s ; i < strl ; i++)
2608 p[i] = lpsz_replace[i];
2609 if(es->style & ES_UPPERCASE)
2610 CharUpperBuffW(p, strl);
2611 else if(es->style & ES_LOWERCASE)
2612 CharLowerBuffW(p, strl);
2613 text_buffer_changed(es);
2614 }
2615 if (es->style & ES_MULTILINE)
2616 {
2617 INT st = min(es->selection_start, es->selection_end);
2618 INT vlc = get_vertical_line_count(es);
2619
2620 hrgn = CreateRectRgn(0, 0, 0, 0);
2621 EDIT_BuildLineDefs_ML(es, st, st + strl,
2622 strl - abs(es->selection_end - es->selection_start), hrgn);
2623 /* if text is too long undo all changes */
2624 if (honor_limit && !(es->style & ES_AUTOVSCROLL) && (es->line_count > vlc)) {
2625 if (strl)
2626 strcpyW(es->text + e, es->text + e + strl);
2627 if (e != s)
2628 for (i = 0 , p = es->text ; i < e - s ; i++)
2629 p[i + s] = buf[i];
2630 text_buffer_changed(es);
2631 EDIT_BuildLineDefs_ML(es, s, e,
2632 abs(es->selection_end - es->selection_start) - strl, hrgn);
2633 strl = 0;
2634 e = s;
2635 hrgn = CreateRectRgn(0, 0, 0, 0);
2636 EDIT_NOTIFY_PARENT(es, EN_MAXTEXT);
2637 }
2638 }
2639 else {
2640 INT fw = es->format_rect.right - es->format_rect.left;
2641 EDIT_InvalidateUniscribeData(es);
2642 EDIT_CalcLineWidth_SL(es);
2643 /* remove chars that don't fit */
2644 if (honor_limit && !(es->style & ES_AUTOHSCROLL) && (es->text_width > fw)) {
2645 while ((es->text_width > fw) && s + strl >= s) {
2646 strcpyW(es->text + s + strl - 1, es->text + s + strl);
2647 strl--;
2648 es->text_length = -1;
2649 EDIT_InvalidateUniscribeData(es);
2650 EDIT_CalcLineWidth_SL(es);
2651 }
2652 text_buffer_changed(es);
2653 EDIT_NOTIFY_PARENT(es, EN_MAXTEXT);
2654 }
2655 }
2656
2657 if (e != s) {
2658 if (can_undo) {
2659 utl = strlenW(es->undo_text);
2660 if (!es->undo_insert_count && (*es->undo_text && (s == es->undo_position))) {
2661 /* undo-buffer is extended to the right */
2662 EDIT_MakeUndoFit(es, utl + e - s);
2663 memcpy(es->undo_text + utl, buf, (e - s)*sizeof(WCHAR));
2664 (es->undo_text + utl)[e - s] = 0; /* ensure 0 termination */
2665 } else if (!es->undo_insert_count && (*es->undo_text && (e == es->undo_position))) {
2666 /* undo-buffer is extended to the left */
2667 EDIT_MakeUndoFit(es, utl + e - s);
2668 for (p = es->undo_text + utl ; p >= es->undo_text ; p--)
2669 p[e - s] = p[0];
2670 for (i = 0 , p = es->undo_text ; i < e - s ; i++)
2671 p[i] = buf[i];
2672 es->undo_position = s;
2673 } else {
2674 /* new undo-buffer */
2675 EDIT_MakeUndoFit(es, e - s);
2676 memcpy(es->undo_text, buf, (e - s)*sizeof(WCHAR));
2677 es->undo_text[e - s] = 0; /* ensure 0 termination */
2678 es->undo_position = s;
2679 }
2680 /* any deletion makes the old insertion-undo invalid */
2681 es->undo_insert_count = 0;
2682 } else
2683 EDIT_EM_EmptyUndoBuffer(es);
2684 }
2685 if (strl) {
2686 if (can_undo) {
2687 if ((s == es->undo_position) ||
2688 ((es->undo_insert_count) &&
2689 (s == es->undo_position + es->undo_insert_count)))
2690 /*
2691 * insertion is new and at delete position or
2692 * an extension to either left or right
2693 */
2694 es->undo_insert_count += strl;
2695 else {
2696 /* new insertion undo */
2697 es->undo_position = s;
2698 es->undo_insert_count = strl;
2699 /* new insertion makes old delete-buffer invalid */
2700 *es->undo_text = '\0';
2701 }
2702 } else
2703 EDIT_EM_EmptyUndoBuffer(es);
2704 }
2705
2706 HeapFree(GetProcessHeap(), 0, buf);
2707
2708 s += strl;
2709
2710 /* If text has been deleted and we're right or center aligned then scroll rightward */
2711 if (es->style & (ES_RIGHT | ES_CENTER))
2712 {
2713 INT delta = strl - abs(es->selection_end - es->selection_start);
2714
2715 if (delta < 0 && es->x_offset)
2716 {
2717 if (abs(delta) > es->x_offset)
2718 es->x_offset = 0;
2719 else
2720 es->x_offset += delta;
2721 }
2722 }
2723
2724 EDIT_EM_SetSel(es, s, s, FALSE);
2725 es->flags |= EF_MODIFIED;
2726 if (send_update) es->flags |= EF_UPDATE;
2727 if (hrgn)
2728 {
2729 EDIT_UpdateTextRegion(es, hrgn, TRUE);
2730 DeleteObject(hrgn);
2731 }
2732 else
2733 EDIT_UpdateText(es, NULL, TRUE);
2734
2735 EDIT_EM_ScrollCaret(es);
2736
2737 /* force scroll info update */
2738 EDIT_UpdateScrollInfo(es);
2739
2740
2741 if(send_update || (es->flags & EF_UPDATE))
2742 {
2743 es->flags &= ~EF_UPDATE;
2744 EDIT_NOTIFY_PARENT(es, EN_CHANGE);
2745 }
2746 EDIT_InvalidateUniscribeData(es);
2747 }
2748
2749
2750 /*********************************************************************
2751 *
2752 * EM_SETHANDLE
2753 *
2754 * FIXME: ES_LOWERCASE, ES_UPPERCASE, ES_OEMCONVERT, ES_NUMBER ???
2755 *
2756 */
2757 static void EDIT_EM_SetHandle(EDITSTATE *es, HLOCAL hloc)
2758 {
2759 if (!(es->style & ES_MULTILINE))
2760 return;
2761
2762 if (!hloc) {
2763 WARN("called with NULL handle\n");
2764 return;
2765 }
2766
2767 EDIT_UnlockBuffer(es, TRUE);
2768
2769 if(es->is_unicode)
2770 {
2771 if(es->hloc32A)
2772 {
2773 LocalFree(es->hloc32A);
2774 es->hloc32A = NULL;
2775 }
2776 es->hloc32W = hloc;
2777 }
2778 else
2779 {
2780 INT countW, countA;
2781 HLOCAL hloc32W_new;
2782 WCHAR *textW;
2783 CHAR *textA;
2784
2785 countA = LocalSize(hloc);
2786 textA = LocalLock(hloc);
2787 countW = MultiByteToWideChar(CP_ACP, 0, textA, countA, NULL, 0);
2788 if(!(hloc32W_new = LocalAlloc(LMEM_MOVEABLE | LMEM_ZEROINIT, countW * sizeof(WCHAR))))
2789 {
2790 ERR("Could not allocate new unicode buffer\n");
2791 return;
2792 }
2793 textW = LocalLock(hloc32W_new);
2794 MultiByteToWideChar(CP_ACP, 0, textA, countA, textW, countW);
2795 LocalUnlock(hloc32W_new);
2796 LocalUnlock(hloc);
2797
2798 if(es->hloc32W)
2799 LocalFree(es->hloc32W);
2800
2801 es->hloc32W = hloc32W_new;
2802 es->hloc32A = hloc;
2803 }
2804
2805 es->buffer_size = LocalSize(es->hloc32W)/sizeof(WCHAR) - 1;
2806
2807 /* The text buffer handle belongs to the control */
2808 es->hlocapp = NULL;
2809
2810 EDIT_LockBuffer(es);
2811 text_buffer_changed(es);
2812
2813 es->x_offset = es->y_offset = 0;
2814 es->selection_start = es->selection_end = 0;
2815 EDIT_EM_EmptyUndoBuffer(es);
2816 es->flags &= ~EF_MODIFIED;
2817 es->flags &= ~EF_UPDATE;
2818 EDIT_BuildLineDefs_ML(es, 0, get_text_length(es), 0, NULL);
2819 EDIT_UpdateText(es, NULL, TRUE);
2820 EDIT_EM_ScrollCaret(es);
2821 /* force scroll info update */
2822 EDIT_UpdateScrollInfo(es);
2823 }
2824
2825
2826 /*********************************************************************
2827 *
2828 * EM_SETLIMITTEXT
2829 *
2830 * NOTE: this version currently implements WinNT limits
2831 *
2832 */
2833 static void EDIT_EM_SetLimitText(EDITSTATE *es, UINT limit)
2834 {
2835 if (!limit) limit = ~0u;
2836 if (!(es->style & ES_MULTILINE)) limit = min(limit, 0x7ffffffe);
2837 es->buffer_limit = limit;
2838 }
2839
2840
2841 /*********************************************************************
2842 *
2843 * EM_SETMARGINS
2844 *
2845 * EC_USEFONTINFO is used as a left or right value i.e. lParam and not as an
2846 * action wParam despite what the docs say. EC_USEFONTINFO calculates the
2847 * margin according to the textmetrics of the current font.
2848 *
2849 * When EC_USEFONTINFO is used in the non_cjk case the margins only
2850 * change if the edit control is equal to or larger than a certain
2851 * size. Though there is an exception for the empty client rect case
2852 * with small font sizes.
2853 */
2854 static BOOL is_cjk(UINT charset)
2855 {
2856 switch(charset)
2857 {
2858 case SHIFTJIS_CHARSET:
2859 case HANGUL_CHARSET:
2860 case GB2312_CHARSET:
2861 case CHINESEBIG5_CHARSET:
2862 return TRUE;
2863 }
2864 /* HANGUL_CHARSET is strange, though treated as CJK by Win 8, it is
2865 * not by other versions including Win 10. */
2866 return FALSE;
2867 }
2868
2869 static void EDIT_EM_SetMargins(EDITSTATE *es, INT action,
2870 WORD left, WORD right, BOOL repaint)
2871 {
2872 TEXTMETRICW tm;
2873 INT default_left_margin = 0; /* in pixels */
2874 INT default_right_margin = 0; /* in pixels */
2875
2876 /* Set the default margins depending on the font */
2877 if (es->font && (left == EC_USEFONTINFO || right == EC_USEFONTINFO)) {
2878 HDC dc = GetDC(es->hwndSelf);
2879 HFONT old_font = SelectObject(dc, es->font);
2880 LONG width = GdiGetCharDimensions(dc, &tm, NULL);
2881 RECT rc;
2882
2883 /* The default margins are only non zero for TrueType or Vector fonts */
2884 if (tm.tmPitchAndFamily & ( TMPF_VECTOR | TMPF_TRUETYPE )) {
2885 if (!is_cjk(tm.tmCharSet)) {
2886 default_left_margin = width / 2;
2887 default_right_margin = width / 2;
2888
2889 GetClientRect(es->hwndSelf, &rc);
2890 if (rc.right - rc.left < (width / 2 + width) * 2 &&
2891 (width >= 28 || !IsRectEmpty(&rc)) ) {
2892 default_left_margin = es->left_margin;
2893 default_right_margin = es->right_margin;
2894 }
2895 } else {
2896 /* FIXME: figure out the CJK values. They are not affected by the client rect. */
2897 default_left_margin = width / 2;
2898 default_right_margin = width / 2;
2899 }
2900 }
2901 SelectObject(dc, old_font);
2902 ReleaseDC(es->hwndSelf, dc);
2903 }
2904
2905 if (action & EC_LEFTMARGIN) {
2906 es->format_rect.left -= es->left_margin;
2907 if (left != EC_USEFONTINFO)
2908 es->left_margin = left;
2909 else
2910 es->left_margin = default_left_margin;
2911 es->format_rect.left += es->left_margin;
2912 }
2913
2914 if (action & EC_RIGHTMARGIN) {
2915 es->format_rect.right += es->right_margin;
2916 if (right != EC_USEFONTINFO)
2917 es->right_margin = right;
2918 else
2919 es->right_margin = default_right_margin;
2920 es->format_rect.right -= es->right_margin;
2921 }
2922
2923 if (action & (EC_LEFTMARGIN | EC_RIGHTMARGIN)) {
2924 EDIT_AdjustFormatRect(es);
2925 if (repaint) EDIT_UpdateText(es, NULL, TRUE);
2926 }
2927
2928 TRACE("left=%d, right=%d\n", es->left_margin, es->right_margin);
2929 }
2930
2931
2932 /*********************************************************************
2933 *
2934 * EM_SETPASSWORDCHAR
2935 *
2936 */
2937 static void EDIT_EM_SetPasswordChar(EDITSTATE *es, WCHAR c)
2938 {
2939 LONG style;
2940
2941 if (es->style & ES_MULTILINE)
2942 return;
2943
2944 if (es->password_char == c)
2945 return;
2946
2947 style = GetWindowLongW( es->hwndSelf, GWL_STYLE );
2948 es->password_char = c;
2949 if (c) {
2950 SetWindowLongW( es->hwndSelf, GWL_STYLE, style | ES_PASSWORD );
2951 es->style |= ES_PASSWORD;
2952 } else {
2953 SetWindowLongW( es->hwndSelf, GWL_STYLE, style & ~ES_PASSWORD );
2954 es->style &= ~ES_PASSWORD;
2955 }
2956 EDIT_InvalidateUniscribeData(es);
2957 EDIT_UpdateText(es, NULL, TRUE);
2958 }
2959
2960
2961 /*********************************************************************
2962 *
2963 * EM_SETTABSTOPS
2964 *
2965 */
2966 static BOOL EDIT_EM_SetTabStops(EDITSTATE *es, INT count, const INT *tabs)
2967 {
2968 if (!(es->style & ES_MULTILINE))
2969 return FALSE;
2970 HeapFree(GetProcessHeap(), 0, es->tabs);
2971 es->tabs_count = count;
2972 if (!count)
2973 es->tabs = NULL;
2974 else {
2975 es->tabs = HeapAlloc(GetProcessHeap(), 0, count * sizeof(INT));
2976 memcpy(es->tabs, tabs, count * sizeof(INT));
2977 }
2978 EDIT_InvalidateUniscribeData(es);
2979 return TRUE;
2980 }
2981
2982
2983 /*********************************************************************
2984 *
2985 * EM_SETWORDBREAKPROC
2986 *
2987 */
2988 static void EDIT_EM_SetWordBreakProc(EDITSTATE *es, void *wbp)
2989 {
2990 if (es->word_break_proc == wbp)
2991 return;
2992
2993 es->word_break_proc = wbp;
2994
2995 if ((es->style & ES_MULTILINE) && !(es->style & ES_AUTOHSCROLL)) {
2996 EDIT_BuildLineDefs_ML(es, 0, get_text_length(es), 0, NULL);
2997 EDIT_UpdateText(es, NULL, TRUE);
2998 }
2999 }
3000
3001
3002 /*********************************************************************
3003 *
3004 * EM_UNDO / WM_UNDO
3005 *
3006 */
3007 static BOOL EDIT_EM_Undo(EDITSTATE *es)
3008 {
3009 INT ulength;
3010 LPWSTR utext;
3011
3012 /* As per MSDN spec, for a single-line edit control,
3013 the return value is always TRUE */
3014 if( es->style & ES_READONLY )
3015 return !(es->style & ES_MULTILINE);
3016
3017 ulength = strlenW(es->undo_text);
3018
3019 utext = HeapAlloc(GetProcessHeap(), 0, (ulength + 1) * sizeof(WCHAR));
3020
3021 strcpyW(utext, es->undo_text);
3022
3023 TRACE("before UNDO:insertion length = %d, deletion buffer = %s\n",
3024 es->undo_insert_count, debugstr_w(utext));
3025
3026 EDIT_EM_SetSel(es, es->undo_position, es->undo_position + es->undo_insert_count, FALSE);
3027 EDIT_EM_EmptyUndoBuffer(es);
3028 EDIT_EM_ReplaceSel(es, TRUE, utext, ulength, TRUE, TRUE);
3029 EDIT_EM_SetSel(es, es->undo_position, es->undo_position + es->undo_insert_count, FALSE);
3030 /* send the notification after the selection start and end are set */
3031 EDIT_NOTIFY_PARENT(es, EN_CHANGE);
3032 EDIT_EM_ScrollCaret(es);
3033 HeapFree(GetProcessHeap(), 0, utext);
3034
3035 TRACE("after UNDO:insertion length = %d, deletion buffer = %s\n",
3036 es->undo_insert_count, debugstr_w(es->undo_text));
3037 return TRUE;
3038 }
3039
3040
3041 /* Helper function for WM_CHAR
3042 *
3043 * According to an MSDN blog article titled "Just because you're a control
3044 * doesn't mean that you're necessarily inside a dialog box," multiline edit
3045 * controls without ES_WANTRETURN would attempt to detect whether it is inside
3046 * a dialog box or not.
3047 */
3048 static inline BOOL EDIT_IsInsideDialog(EDITSTATE *es)
3049 {
3050 return (es->flags & EF_DIALOGMODE);
3051 }
3052
3053
3054 /*********************************************************************
3055 *
3056 * WM_PASTE
3057 *
3058 */
3059 static void EDIT_WM_Paste(EDITSTATE *es)
3060 {
3061 HGLOBAL hsrc;
3062 LPWSTR src, ptr;
3063 int len;
3064
3065 /* Protect read-only edit control from modification */
3066 if(es->style & ES_READONLY)
3067 return;
3068
3069 OpenClipboard(es->hwndSelf);
3070 if ((hsrc = GetClipboardData(CF_UNICODETEXT))) {
3071 src = GlobalLock(hsrc);
3072 len = strlenW(src);
3073 /* Protect single-line edit against pasting new line character */
3074 if (!(es->style & ES_MULTILINE) && ((ptr = strchrW(src, '\n')))) {
3075 len = ptr - src;
3076 if (len && src[len - 1] == '\r')
3077 --len;
3078 }
3079 EDIT_EM_ReplaceSel(es, TRUE, src, len, TRUE, TRUE);
3080 GlobalUnlock(hsrc);
3081 }
3082 else if (es->style & ES_PASSWORD) {
3083 /* clear selected text in password edit box even with empty clipboard */
3084 EDIT_EM_ReplaceSel(es, TRUE, NULL, 0, TRUE, TRUE);
3085 }
3086 CloseClipboard();
3087 }
3088
3089
3090 /*********************************************************************
3091 *
3092 * WM_COPY
3093 *
3094 */
3095 static void EDIT_WM_Copy(EDITSTATE *es)
3096 {
3097 INT s = min(es->selection_start, es->selection_end);
3098 INT e = max(es->selection_start, es->selection_end);
3099 HGLOBAL hdst;
3100 LPWSTR dst;
3101 DWORD len;
3102
3103 if (e == s) return;
3104
3105 len = e - s;
3106 hdst = GlobalAlloc(GMEM_MOVEABLE | GMEM_DDESHARE, (len + 1) * sizeof(WCHAR));
3107 dst = GlobalLock(hdst);
3108 memcpy(dst, es->text + s, len * sizeof(WCHAR));
3109 dst[len] = 0; /* ensure 0 termination */
3110 TRACE("%s\n", debugstr_w(dst));
3111 GlobalUnlock(hdst);
3112 OpenClipboard(es->hwndSelf);
3113 EmptyClipboard();
3114 SetClipboardData(CF_UNICODETEXT, hdst);
3115 CloseClipboard();
3116 }
3117
3118
3119 /*********************************************************************
3120 *
3121 * WM_CLEAR
3122 *
3123 */
3124 static inline void EDIT_WM_Clear(EDITSTATE *es)
3125 {
3126 /* Protect read-only edit control from modification */
3127 if(es->style & ES_READONLY)
3128 return;
3129
3130 EDIT_EM_ReplaceSel(es, TRUE, NULL, 0, TRUE, TRUE);
3131 }
3132
3133
3134 /*********************************************************************
3135 *
3136 * WM_CUT
3137 *
3138 */
3139 static inline void EDIT_WM_Cut(EDITSTATE *es)
3140 {
3141 EDIT_WM_Copy(es);
3142 EDIT_WM_Clear(es);
3143 }
3144
3145
3146 /*********************************************************************
3147 *
3148 * WM_CHAR
3149 *
3150 */
3151 static LRESULT EDIT_WM_Char(EDITSTATE *es, WCHAR c)
3152 {
3153 BOOL control;
3154
3155 control = GetKeyState(VK_CONTROL) & 0x8000;
3156
3157 switch (c) {
3158 case '\r':
3159 /* If it's not a multiline edit box, it would be ignored below.
3160 * For multiline edit without ES_WANTRETURN, we have to make a
3161 * special case.
3162 */
3163 if ((es->style & ES_MULTILINE) && !(es->style & ES_WANTRETURN))
3164 if (EDIT_IsInsideDialog(es))
3165 break;
3166 case '\n':
3167 if (es->style & ES_MULTILINE) {
3168 if (es->style & ES_READONLY) {
3169 EDIT_MoveHome(es, FALSE, FALSE);
3170 EDIT_MoveDown_ML(es, FALSE);
3171 } else {
3172 static const WCHAR cr_lfW[] = {'\r','\n'};
3173 EDIT_EM_ReplaceSel(es, TRUE, cr_lfW, 2, TRUE, TRUE);
3174 }
3175 }
3176 break;
3177 case '\t':
3178 if ((es->style & ES_MULTILINE) && !(es->style & ES_READONLY))
3179 {
3180 static const WCHAR tabW[] = {'\t'};
3181 if (EDIT_IsInsideDialog(es))
3182 break;
3183 EDIT_EM_ReplaceSel(es, TRUE, tabW, 1, TRUE, TRUE);
3184 }
3185 break;
3186 case VK_BACK:
3187 if (!(es->style & ES_READONLY) && !control) {
3188 if (es->selection_start != es->selection_end)
3189 EDIT_WM_Clear(es);
3190 else {
3191 /* delete character left of caret */
3192 EDIT_EM_SetSel(es, (UINT)-1, 0, FALSE);
3193 EDIT_MoveBackward(es, TRUE);
3194 EDIT_WM_Clear(es);
3195 }
3196 }
3197 break;
3198 case 0x03: /* ^C */
3199 if (!(es->style & ES_PASSWORD))
3200 SendMessageW(es->hwndSelf, WM_COPY, 0, 0);
3201 break;
3202 case 0x16: /* ^V */
3203 if (!(es->style & ES_READONLY))
3204 SendMessageW(es->hwndSelf, WM_PASTE, 0, 0);
3205 break;
3206 case 0x18: /* ^X */
3207 if (!((es->style & ES_READONLY) || (es->style & ES_PASSWORD)))
3208 SendMessageW(es->hwndSelf, WM_CUT, 0, 0);
3209 break;
3210 case 0x1A: /* ^Z */
3211 if (!(es->style & ES_READONLY))
3212 SendMessageW(es->hwndSelf, WM_UNDO, 0, 0);
3213 break;
3214
3215 default:
3216 /*If Edit control style is ES_NUMBER allow users to key in only numeric values*/
3217 if( (es->style & ES_NUMBER) && !( c >= '0' && c <= '9') )
3218 break;
3219
3220 if (!(es->style & ES_READONLY) && (c >= ' ') && (c != 127))
3221 EDIT_EM_ReplaceSel(es, TRUE, &c, 1, TRUE, TRUE);
3222 break;
3223 }
3224 return 1;
3225 }
3226
3227
3228 /*********************************************************************
3229 *
3230 * EDIT_ContextMenuCommand
3231 *
3232 */
3233 static void EDIT_ContextMenuCommand(EDITSTATE *es, UINT id)
3234 {
3235 switch (id) {
3236 case EM_UNDO:
3237 SendMessageW(es->hwndSelf, WM_UNDO, 0, 0);
3238 break;
3239 case WM_CUT:
3240 SendMessageW(es->hwndSelf, WM_CUT, 0, 0);
3241 break;
3242 case WM_COPY:
3243 SendMessageW(es->hwndSelf, WM_COPY, 0, 0);
3244 break;
3245 case WM_PASTE:
3246 SendMessageW(es->hwndSelf, WM_PASTE, 0, 0);
3247 break;
3248 case WM_CLEAR:
3249 SendMessageW(es->hwndSelf, WM_CLEAR, 0, 0);
3250 break;
3251 case EM_SETSEL:
3252 SendMessageW(es->hwndSelf, EM_SETSEL, 0, -1);
3253 break;
3254 default:
3255 ERR("unknown menu item, please report\n");
3256 break;
3257 }
3258 }
3259
3260
3261 /*********************************************************************
3262 *
3263 * WM_CONTEXTMENU
3264 *
3265 * Note: the resource files resource/sysres_??.rc cannot define a
3266 * single popup menu. Hence we use a (dummy) menubar
3267 * containing the single popup menu as its first item.
3268 *
3269 * FIXME: the message identifiers have been chosen arbitrarily,
3270 * hence we use MF_BYPOSITION.
3271 * We might as well use the "real" values (anybody knows ?)
3272 * The menu definition is in resources/sysres_??.rc.
3273 * Once these are OK, we better use MF_BYCOMMAND here
3274 * (as we do in EDIT_WM_Command()).
3275 *
3276 */
3277 static void EDIT_WM_ContextMenu(EDITSTATE *es, INT x, INT y)
3278 {
3279 HMENU menu = LoadMenuA(user32_module, "EDITMENU");
3280 HMENU popup = GetSubMenu(menu, 0);
3281 UINT start = es->selection_start;
3282 UINT end = es->selection_end;
3283 UINT cmd;
3284
3285 ORDER_UINT(start, end);
3286
3287 /* undo */
3288 EnableMenuItem(popup, 0, MF_BYPOSITION | (EDIT_EM_CanUndo(es) && !(es->style & ES_READONLY) ? MF_ENABLED : MF_GRAYED));
3289 /* cut */
3290 EnableMenuItem(popup, 2, MF_BYPOSITION | ((end - start) && !(es->style & ES_PASSWORD) && !(es->style & ES_READONLY) ? MF_ENABLED : MF_GRAYED));
3291 /* copy */
3292 EnableMenuItem(popup, 3, MF_BYPOSITION | ((end - start) && !(es->style & ES_PASSWORD) ? MF_ENABLED : MF_GRAYED));
3293 /* paste */
3294 EnableMenuItem(popup, 4, MF_BYPOSITION | (IsClipboardFormatAvailable(CF_UNICODETEXT) && !(es->style & ES_READONLY) ? MF_ENABLED : MF_GRAYED));
3295 /* delete */
3296 EnableMenuItem(popup, 5, MF_BYPOSITION | ((end - start) && !(es->style & ES_READONLY) ? MF_ENABLED : MF_GRAYED));
3297 /* select all */
3298 EnableMenuItem(popup, 7, MF_BYPOSITION | (start || (end != get_text_length(es)) ? MF_ENABLED : MF_GRAYED));
3299
3300 if (x == -1 && y == -1) /* passed via VK_APPS press/release */
3301 {
3302 RECT rc;
3303 /* Windows places the menu at the edit's center in this case */
3304 WIN_GetRectangles( es->hwndSelf, COORDS_SCREEN, NULL, &rc );
3305 x = rc.left + (rc.right - rc.left) / 2;
3306 y = rc.top + (rc.bottom - rc.top) / 2;
3307 }
3308
3309 if (!(es->flags & EF_FOCUSED))
3310 SetFocus(es->hwndSelf);
3311
3312 cmd = TrackPopupMenu(popup, TPM_LEFTALIGN | TPM_RIGHTBUTTON | TPM_RETURNCMD | TPM_NONOTIFY,
3313 x, y, 0, es->hwndSelf, NULL);
3314
3315 if (cmd)
3316 EDIT_ContextMenuCommand(es, cmd);
3317
3318 DestroyMenu(menu);
3319 }
3320
3321
3322 /*********************************************************************
3323 *
3324 * WM_GETTEXT
3325 *
3326 */
3327 static INT EDIT_WM_GetText(const EDITSTATE *es, INT count, LPWSTR dst, BOOL unicode)
3328 {
3329 if(!count) return 0;
3330
3331 if(unicode)
3332 {
3333 lstrcpynW(dst, es->text, count);
3334 return strlenW(dst);
3335 }
3336 else
3337 {
3338 LPSTR textA = (LPSTR)dst;
3339 if (!WideCharToMultiByte(CP_ACP, 0, es->text, -1, textA, count, NULL, NULL))
3340 textA[count - 1] = 0; /* ensure 0 termination */
3341 return strlen(textA);
3342 }
3343 }
3344
3345 /*********************************************************************
3346 *
3347 * EDIT_CheckCombo
3348 *
3349 */
3350 static BOOL EDIT_CheckCombo(EDITSTATE *es, UINT msg, INT key)
3351 {
3352 HWND hLBox = es->hwndListBox;
3353 HWND hCombo;
3354 BOOL bDropped;
3355 int nEUI;
3356
3357 if (!hLBox)
3358 return FALSE;
3359
3360 hCombo = GetParent(es->hwndSelf);
3361 bDropped = TRUE;
3362 nEUI = 0;
3363
3364 TRACE_(combo)("[%p]: handling msg %x (%x)\n", es->hwndSelf, msg, key);
3365
3366 if (key == VK_UP || key == VK_DOWN)
3367 {
3368 if (SendMessageW(hCombo, CB_GETEXTENDEDUI, 0, 0))
3369 nEUI = 1;
3370
3371 if (msg == WM_KEYDOWN || nEUI)
3372 bDropped = (BOOL)SendMessageW(hCombo, CB_GETDROPPEDSTATE, 0, 0);
3373 }
3374
3375 switch (msg)
3376 {
3377 case WM_KEYDOWN:
3378 if (!bDropped && nEUI && (key == VK_UP || key == VK_DOWN))
3379 {
3380 /* make sure ComboLBox pops up */
3381 SendMessageW(hCombo, CB_SETEXTENDEDUI, FALSE, 0);
3382 key = VK_F4;
3383 nEUI = 2;
3384 }
3385
3386 SendMessageW(hLBox, WM_KEYDOWN, key, 0);
3387 break;
3388
3389 case WM_SYSKEYDOWN: /* Handle Alt+up/down arrows */
3390 if (nEUI)
3391 SendMessageW(hCombo, CB_SHOWDROPDOWN, !bDropped, 0);
3392 else
3393 SendMessageW(hLBox, WM_KEYDOWN, VK_F4, 0);
3394 break;
3395 }
3396
3397 if(nEUI == 2)
3398 SendMessageW(hCombo, CB_SETEXTENDEDUI, TRUE, 0);
3399
3400 return TRUE;
3401 }
3402
3403
3404 /*********************************************************************
3405 *
3406 * WM_KEYDOWN
3407 *
3408 * Handling of special keys that don't produce a WM_CHAR
3409 * (i.e. non-printable keys) & Backspace & Delete
3410 *
3411 */
3412 static LRESULT EDIT_WM_KeyDown(EDITSTATE *es, INT key)
3413 {
3414 BOOL shift;
3415 BOOL control;
3416
3417 if (GetKeyState(VK_MENU) & 0x8000)
3418 return 0;
3419
3420 shift = GetKeyState(VK_SHIFT) & 0x8000;
3421 control = GetKeyState(VK_CONTROL) & 0x8000;
3422
3423 switch (key) {
3424 case VK_F4:
3425 case VK_UP:
3426 if (EDIT_CheckCombo(es, WM_KEYDOWN, key) || key == VK_F4)
3427 break;
3428
3429 /* fall through */
3430 case VK_LEFT:
3431 if ((es->style & ES_MULTILINE) && (key == VK_UP))
3432 EDIT_MoveUp_ML(es, shift);
3433 else
3434 if (control)
3435 EDIT_MoveWordBackward(es, shift);
3436 else
3437 EDIT_MoveBackward(es, shift);
3438 break;
3439 case VK_DOWN:
3440 if (EDIT_CheckCombo(es, WM_KEYDOWN, key))
3441 break;
3442 /* fall through */
3443 case VK_RIGHT:
3444 if ((es->style & ES_MULTILINE) && (key == VK_DOWN))
3445 EDIT_MoveDown_ML(es, shift);
3446 else if (control)
3447 EDIT_MoveWordForward(es, shift);
3448 else
3449 EDIT_MoveForward(es, shift);
3450 break;
3451 case VK_HOME:
3452 EDIT_MoveHome(es, shift, control);
3453 break;
3454 case VK_END:
3455 EDIT_MoveEnd(es, shift, control);
3456 break;
3457 case VK_PRIOR:
3458 if (es->style & ES_MULTILINE)
3459 EDIT_MovePageUp_ML(es, shift);
3460 else
3461 EDIT_CheckCombo(es, WM_KEYDOWN, key);
3462 break;
3463 case VK_NEXT:
3464 if (es->style & ES_MULTILINE)
3465 EDIT_MovePageDown_ML(es, shift);
3466 else
3467 EDIT_CheckCombo(es, WM_KEYDOWN, key);
3468 break;
3469 case VK_DELETE:
3470 if (!(es->style & ES_READONLY) && !(shift && control)) {
3471 if (es->selection_start != es->selection_end) {
3472 if (shift)
3473 EDIT_WM_Cut(es);
3474 else
3475 EDIT_WM_Clear(es);
3476 } else {
3477 if (shift) {
3478 /* delete character left of caret */
3479 EDIT_EM_SetSel(es, (UINT)-1, 0, FALSE);
3480 EDIT_MoveBackward(es, TRUE);
3481 EDIT_WM_Clear(es);
3482 } else if (control) {
3483 /* delete to end of line */
3484 EDIT_EM_SetSel(es, (UINT)-1, 0, FALSE);
3485 EDIT_MoveEnd(es, TRUE, FALSE);
3486 EDIT_WM_Clear(es);
3487 } else {
3488 /* delete character right of caret */
3489 EDIT_EM_SetSel(es, (UINT)-1, 0, FALSE);
3490 EDIT_MoveForward(es, TRUE);
3491 EDIT_WM_Clear(es);
3492 }
3493 }
3494 }
3495 break;
3496 case VK_INSERT:
3497 if (shift) {
3498 if (!(es->style & ES_READONLY))
3499 EDIT_WM_Paste(es);
3500 } else if (control)
3501 EDIT_WM_Copy(es);
3502 break;
3503 case VK_RETURN:
3504 /* If the edit doesn't want the return send a message to the default object */
3505 if(!(es->style & ES_MULTILINE) || !(es->style & ES_WANTRETURN))
3506 {
3507 DWORD dw;
3508
3509 if (!EDIT_IsInsideDialog(es)) break;
3510 if (control) break;
3511 dw = SendMessageW(es->hwndParent, DM_GETDEFID, 0, 0);
3512 if (HIWORD(dw) == DC_HASDEFID)
3513 {
3514 HWND hwDefCtrl = GetDlgItem(es->hwndParent, LOWORD(dw));
3515 if (hwDefCtrl)
3516 {
3517 SendMessageW(es->hwndParent, WM_NEXTDLGCTL, (WPARAM)hwDefCtrl, TRUE);
3518 PostMessageW(hwDefCtrl, WM_KEYDOWN, VK_RETURN, 0);
3519 }
3520 }
3521 }
3522 break;
3523 case VK_ESCAPE:
3524 if ((es->style & ES_MULTILINE) && EDIT_IsInsideDialog(es))
3525 PostMessageW(es->hwndParent, WM_CLOSE, 0, 0);
3526 break;
3527 case VK_TAB:
3528 if ((es->style & ES_MULTILINE) && EDIT_IsInsideDialog(es))
3529 SendMessageW(es->hwndParent, WM_NEXTDLGCTL, shift, 0);
3530 break;
3531 }
3532 return TRUE;
3533 }
3534
3535
3536 /*********************************************************************
3537 *
3538 * WM_KILLFOCUS
3539 *
3540 */
3541 static LRESULT EDIT_WM_KillFocus(EDITSTATE *es)
3542 {
3543 es->flags &= ~EF_FOCUSED;
3544 DestroyCaret();
3545 if(!(es->style & ES_NOHIDESEL))
3546 EDIT_InvalidateText(es, es->selection_start, es->selection_end);
3547 EDIT_NOTIFY_PARENT(es, EN_KILLFOCUS);
3548 /* throw away left over scroll when we lose focus */
3549 es->wheelDeltaRemainder = 0;
3550 return 0;
3551 }
3552
3553
3554 /*********************************************************************
3555 *
3556 * WM_LBUTTONDBLCLK
3557 *
3558 * The caret position has been set on the WM_LBUTTONDOWN message
3559 *
3560 */
3561 static LRESULT EDIT_WM_LButtonDblClk(EDITSTATE *es)
3562 {
3563 INT s;
3564 INT e = es->selection_end;
3565 INT l;
3566 INT li;
3567 INT ll;
3568
3569 es->bCaptureState = TRUE;
3570 SetCapture(es->hwndSelf);
3571
3572 l = EDIT_EM_LineFromChar(es, e);
3573 li = EDIT_EM_LineIndex(es, l);
3574 ll = EDIT_EM_LineLength(es, e);
3575 s = li + EDIT_CallWordBreakProc(es, li, e - li, ll, WB_LEFT);
3576 e = li + EDIT_CallWordBreakProc(es, li, e - li, ll, WB_RIGHT);
3577 EDIT_EM_SetSel(es, s, e, FALSE);
3578 EDIT_EM_ScrollCaret(es);
3579 es->region_posx = es->region_posy = 0;
3580 SetTimer(es->hwndSelf, 0, 100, NULL);
3581 return 0;
3582 }
3583
3584
3585 /*********************************************************************
3586 *
3587 * WM_LBUTTONDOWN
3588 *
3589 */
3590 static LRESULT EDIT_WM_LButtonDown(EDITSTATE *es, DWORD keys, INT x, INT y)
3591 {
3592 INT e;
3593 BOOL after_wrap;
3594
3595 es->bCaptureState = TRUE;
3596 SetCapture(es->hwndSelf);
3597 EDIT_ConfinePoint(es, &x, &y);
3598 e = EDIT_CharFromPos(es, x, y, &after_wrap);
3599 EDIT_EM_SetSel(es, (keys & MK_SHIFT) ? es->selection_start : e, e, after_wrap);
3600 EDIT_EM_ScrollCaret(es);
3601 es->region_posx = es->region_posy = 0;
3602 SetTimer(es->hwndSelf, 0, 100, NULL);
3603
3604 if (!(es->flags & EF_FOCUSED))
3605 SetFocus(es->hwndSelf);
3606
3607 return 0;
3608 }
3609
3610
3611 /*********************************************************************
3612 *
3613 * WM_LBUTTONUP
3614 *
3615 */
3616 static LRESULT EDIT_WM_LButtonUp(EDITSTATE *es)
3617 {
3618 if (es->bCaptureState) {
3619 KillTimer(es->hwndSelf, 0);
3620 if (GetCapture() == es->hwndSelf) ReleaseCapture();
3621 }
3622 es->bCaptureState = FALSE;
3623 return 0;
3624 }
3625
3626
3627 /*********************************************************************
3628 *
3629 * WM_MBUTTONDOWN
3630 *
3631 */
3632 static LRESULT EDIT_WM_MButtonDown(EDITSTATE *es)
3633 {
3634 SendMessageW(es->hwndSelf, WM_PASTE, 0, 0);
3635 return 0;
3636 }
3637
3638
3639 /*********************************************************************
3640 *
3641 * WM_MOUSEMOVE
3642 *
3643 */
3644 static LRESULT EDIT_WM_MouseMove(EDITSTATE *es, INT x, INT y)
3645 {
3646 INT e;
3647 BOOL after_wrap;
3648 INT prex, prey;
3649
3650 /* If the mouse has been captured by process other than the edit control itself,
3651 * the windows edit controls will not select the strings with mouse move.
3652 */
3653 if (!es->bCaptureState || GetCapture() != es->hwndSelf)
3654 return 0;
3655
3656 /*
3657 * FIXME: gotta do some scrolling if outside client
3658 * area. Maybe reset the timer ?
3659 */
3660 prex = x; prey = y;
3661 EDIT_ConfinePoint(es, &x, &y);
3662 es->region_posx = (prex < x) ? -1 : ((prex > x) ? 1 : 0);
3663 es->region_posy = (prey < y) ? -1 : ((prey > y) ? 1 : 0);
3664 e = EDIT_CharFromPos(es, x, y, &after_wrap);
3665 EDIT_EM_SetSel(es, es->selection_start, e, after_wrap);
3666 EDIT_SetCaretPos(es,es->selection_end,es->flags & EF_AFTER_WRAP);
3667 return 0;
3668 }
3669
3670
3671 /*********************************************************************
3672 *
3673 * WM_PAINT
3674 *
3675 */
3676 static void EDIT_WM_Paint(EDITSTATE *es, HDC hdc)
3677 {
3678 PAINTSTRUCT ps;
3679 INT i;
3680 HDC dc;
3681 HFONT old_font = 0;
3682 RECT rc;
3683 RECT rcClient;
3684 RECT rcLine;
3685 RECT rcRgn;
3686 HBRUSH brush;
3687 HBRUSH old_brush;
3688 INT bw, bh;
3689 BOOL rev = es->bEnableState &&
3690 ((es->flags & EF_FOCUSED) ||
3691 (es->style & ES_NOHIDESEL));
3692 dc = hdc ? hdc : BeginPaint(es->hwndSelf, &ps);
3693
3694 /* The dc we use for calculating may not be the one we paint into.
3695 This is the safest action. */
3696 EDIT_InvalidateUniscribeData(es);
3697 GetClientRect(es->hwndSelf, &rcClient);
3698
3699 /* get the background brush */
3700 brush = EDIT_NotifyCtlColor(es, dc);
3701
3702 /* paint the border and the background */
3703 IntersectClipRect(dc, rcClient.left, rcClient.top, rcClient.right, rcClient.bottom);
3704
3705 if(es->style & WS_BORDER) {
3706 bw = GetSystemMetrics(SM_CXBORDER);
3707 bh = GetSystemMetrics(SM_CYBORDER);
3708 rc = rcClient;
3709 if(es->style & ES_MULTILINE) {
3710 if(es->style & WS_HSCROLL) rc.bottom+=bh;
3711 if(es->style & WS_VSCROLL) rc.right+=bw;
3712 }
3713
3714 /* Draw the frame. Same code as in nonclient.c */
3715 old_brush = SelectObject(dc, GetSysColorBrush(COLOR_WINDOWFRAME));
3716 PatBlt(dc, rc.left, rc.top, rc.right - rc.left, bh, PATCOPY);
3717 PatBlt(dc, rc.left, rc.top, bw, rc.bottom - rc.top, PATCOPY);
3718 PatBlt(dc, rc.left, rc.bottom - 1, rc.right - rc.left, -bw, PATCOPY);
3719 PatBlt(dc, rc.right - 1, rc.top, -bw, rc.bottom - rc.top, PATCOPY);
3720 SelectObject(dc, old_brush);
3721
3722 /* Keep the border clean */
3723 IntersectClipRect(dc, rc.left+bw, rc.top+bh,
3724 max(rc.right-bw, rc.left+bw), max(rc.bottom-bh, rc.top+bh));
3725 }
3726
3727 GetClipBox(dc, &rc);
3728 FillRect(dc, &rc, brush);
3729
3730 IntersectClipRect(dc, es->format_rect.left,
3731 es->format_rect.top,
3732 es->format_rect.right,
3733 es->format_rect.bottom);
3734 if (es->style & ES_MULTILINE) {
3735 rc = rcClient;
3736 IntersectClipRect(dc, rc.left, rc.top, rc.right, rc.bottom);
3737 }
3738 if (es->font)
3739 old_font = SelectObject(dc, es->font);
3740
3741 if (!es->bEnableState)
3742 SetTextColor(dc, GetSysColor(COLOR_GRAYTEXT));
3743 GetClipBox(dc, &rcRgn);
3744 if (es->style & ES_MULTILINE) {
3745 INT vlc = get_vertical_line_count(es);
3746 for (i = es->y_offset ; i <= min(es->y_offset + vlc, es->y_offset + es->line_count - 1) ; i++) {
3747 EDIT_UpdateUniscribeData(es, dc, i);
3748 EDIT_GetLineRect(es, i, 0, -1, &rcLine);
3749 if (IntersectRect(&rc, &rcRgn, &rcLine))
3750 EDIT_PaintLine(es, dc, i, rev);
3751 }
3752 } else {
3753 EDIT_UpdateUniscribeData(es, dc, 0);
3754 EDIT_GetLineRect(es, 0, 0, -1, &rcLine);
3755 if (IntersectRect(&rc, &rcRgn, &rcLine))
3756 EDIT_PaintLine(es, dc, 0, rev);
3757 }
3758 if (es->font)
3759 SelectObject(dc, old_font);
3760
3761 if (!hdc)
3762 EndPaint(es->hwndSelf, &ps);
3763 }
3764
3765
3766 /*********************************************************************
3767 *
3768 * WM_SETFOCUS
3769 *
3770 */
3771 static void EDIT_WM_SetFocus(EDITSTATE *es)
3772 {
3773 es->flags |= EF_FOCUSED;
3774
3775 if (!(es->style & ES_NOHIDESEL))
3776 EDIT_InvalidateText(es, es->selection_start, es->selection_end);
3777
3778 /* single line edit updates itself */
3779 if (IsWindowVisible(es->hwndSelf) && !(es->style & ES_MULTILINE))
3780 {
3781 HDC hdc = GetDC(es->hwndSelf);
3782 EDIT_WM_Paint(es, hdc);
3783 ReleaseDC(es->hwndSelf, hdc);
3784 }
3785
3786 CreateCaret(es->hwndSelf, 0, 1, es->line_height);
3787 EDIT_SetCaretPos(es, es->selection_end,
3788 es->flags & EF_AFTER_WRAP);
3789 ShowCaret(es->hwndSelf);
3790 EDIT_NOTIFY_PARENT(es, EN_SETFOCUS);
3791 }
3792
3793
3794 /*********************************************************************
3795 *
3796 * WM_SETFONT
3797 *
3798 * With Win95 look the margins are set to default font value unless
3799 * the system font (font == 0) is being set, in which case they are left
3800 * unchanged.
3801 *
3802 */
3803 static void EDIT_WM_SetFont(EDITSTATE *es, HFONT font, BOOL redraw)
3804 {
3805 TEXTMETRICW tm;
3806 HDC dc;
3807 HFONT old_font = 0;
3808 RECT clientRect;
3809
3810 es->font = font;
3811 EDIT_InvalidateUniscribeData(es);
3812 dc = GetDC(es->hwndSelf);
3813 if (font)
3814 old_font = SelectObject(dc, font);
3815 GetTextMetricsW(dc, &tm);
3816 es->line_height = tm.tmHeight;
3817 es->char_width = tm.tmAveCharWidth;
3818 if (font)
3819 SelectObject(dc, old_font);
3820 ReleaseDC(es->hwndSelf, dc);
3821
3822 /* Reset the format rect and the margins */
3823 GetClientRect(es->hwndSelf, &clientRect);
3824 EDIT_SetRectNP(es, &clientRect);
3825 EDIT_EM_SetMargins(es, EC_LEFTMARGIN | EC_RIGHTMARGIN,
3826 EC_USEFONTINFO, EC_USEFONTINFO, FALSE);
3827
3828 if (es->style & ES_MULTILINE)
3829 EDIT_BuildLineDefs_ML(es, 0, get_text_length(es), 0, NULL);
3830 else
3831 EDIT_CalcLineWidth_SL(es);
3832
3833 if (redraw)
3834 EDIT_UpdateText(es, NULL, TRUE);
3835 if (es->flags & EF_FOCUSED) {
3836 DestroyCaret();
3837 CreateCaret(es->hwndSelf, 0, 1, es->line_height);
3838 EDIT_SetCaretPos(es, es->selection_end,
3839 es->flags & EF_AFTER_WRAP);
3840 ShowCaret(es->hwndSelf);
3841 }
3842 }
3843
3844
3845 /*********************************************************************
3846 *
3847 * WM_SETTEXT
3848 *
3849 * NOTES
3850 * For multiline controls (ES_MULTILINE), reception of WM_SETTEXT triggers:
3851 * The modified flag is reset. No notifications are sent.
3852 *
3853 * For single-line controls, reception of WM_SETTEXT triggers:
3854 * The modified flag is reset. EN_UPDATE and EN_CHANGE notifications are sent.
3855 *
3856 */
3857 static void EDIT_WM_SetText(EDITSTATE *es, LPCWSTR text, BOOL unicode)
3858 {
3859 LPWSTR textW = NULL;
3860 if (!unicode && text)
3861 {
3862 LPCSTR textA = (LPCSTR)text;
3863 INT countW = MultiByteToWideChar(CP_ACP, 0, textA, -1, NULL, 0);
3864 textW = HeapAlloc(GetProcessHeap(), 0, countW * sizeof(WCHAR));
3865 if (textW)
3866 MultiByteToWideChar(CP_ACP, 0, textA, -1, textW, countW);
3867 text = textW;
3868 }
3869
3870 if (es->flags & EF_UPDATE)
3871 /* fixed this bug once; complain if we see it about to happen again. */
3872 ERR("SetSel may generate UPDATE message whose handler may reset "
3873 "selection.\n");
3874
3875 EDIT_EM_SetSel(es, 0, (UINT)-1, FALSE);
3876 if (text)
3877 {
3878 TRACE("%s\n", debugstr_w(text));
3879 EDIT_EM_ReplaceSel(es, FALSE, text, strlenW(text), FALSE, FALSE);
3880 if(!unicode)
3881 HeapFree(GetProcessHeap(), 0, textW);
3882 }
3883 else
3884 {
3885 TRACE("<NULL>\n");
3886 EDIT_EM_ReplaceSel(es, FALSE, NULL, 0, FALSE, FALSE);
3887 }
3888 es->x_offset = 0;
3889 es->flags &= ~EF_MODIFIED;
3890 EDIT_EM_SetSel(es, 0, 0, FALSE);
3891
3892 /* Send the notification after the selection start and end have been set
3893 * edit control doesn't send notification on WM_SETTEXT
3894 * if it is multiline, or it is part of combobox
3895 */
3896 if( !((es->style & ES_MULTILINE) || es->hwndListBox))
3897 {
3898 EDIT_NOTIFY_PARENT(es, EN_UPDATE);
3899 EDIT_NOTIFY_PARENT(es, EN_CHANGE);
3900 }
3901 EDIT_EM_ScrollCaret(es);
3902 EDIT_UpdateScrollInfo(es);
3903 EDIT_InvalidateUniscribeData(es);
3904 }
3905
3906
3907 /*********************************************************************
3908 *
3909 * WM_SIZE
3910 *
3911 */
3912 static void EDIT_WM_Size(EDITSTATE *es, UINT action)
3913 {
3914 if ((action == SIZE_MAXIMIZED) || (action == SIZE_RESTORED)) {
3915 RECT rc;
3916 GetClientRect(es->hwndSelf, &rc);
3917 EDIT_SetRectNP(es, &rc);
3918 EDIT_UpdateText(es, NULL, TRUE);
3919 }
3920 }
3921
3922
3923 /*********************************************************************
3924 *
3925 * WM_STYLECHANGED
3926 *
3927 * This message is sent by SetWindowLong on having changed either the Style
3928 * or the extended style.
3929 *
3930 * We ensure that the window's version of the styles and the EDITSTATE's agree.
3931 *
3932 * See also EDIT_WM_NCCreate
3933 *
3934 * It appears that the Windows version of the edit control allows the style
3935 * (as retrieved by GetWindowLong) to be any value and maintains an internal
3936 * style variable which will generally be different. In this function we
3937 * update the internal style based on what changed in the externally visible
3938 * style.
3939 *
3940 * Much of this content as based upon the MSDN, especially:
3941 * Platform SDK Documentation -> User Interface Services ->
3942 * Windows User Interface -> Edit Controls -> Edit Control Reference ->
3943 * Edit Control Styles
3944 */
3945 static LRESULT EDIT_WM_StyleChanged ( EDITSTATE *es, WPARAM which, const STYLESTRUCT *style)
3946 {
3947 if (GWL_STYLE == which) {
3948 DWORD style_change_mask;
3949 DWORD new_style;
3950 /* Only a subset of changes can be applied after the control
3951 * has been created.
3952 */
3953 style_change_mask = ES_UPPERCASE | ES_LOWERCASE |
3954 ES_NUMBER;
3955 if (es->style & ES_MULTILINE)
3956 style_change_mask |= ES_WANTRETURN;
3957
3958 new_style = style->styleNew & style_change_mask;
3959
3960 /* Number overrides lowercase overrides uppercase (at least it
3961 * does in Win95). However I'll bet that ES_NUMBER would be
3962 * invalid under Win 3.1.
3963 */
3964 if (new_style & ES_NUMBER) {
3965 ; /* do not override the ES_NUMBER */
3966 } else if (new_style & ES_LOWERCASE) {
3967 new_style &= ~ES_UPPERCASE;
3968 }
3969
3970 es->style = (es->style & ~style_change_mask) | new_style;
3971 } else if (GWL_EXSTYLE == which) {
3972 ; /* FIXME - what is needed here */
3973 } else {
3974 WARN ("Invalid style change %ld\n",which);
3975 }
3976
3977 return 0;
3978 }
3979
3980 /*********************************************************************
3981 *
3982 * WM_SYSKEYDOWN
3983 *
3984 */
3985 static LRESULT EDIT_WM_SysKeyDown(EDITSTATE *es, INT key, DWORD key_data)
3986 {
3987 if ((key == VK_BACK) && (key_data & 0x2000)) {
3988 if (EDIT_EM_CanUndo(es))
3989 EDIT_EM_Undo(es);
3990 return 0;
3991 } else if (key == VK_UP || key == VK_DOWN) {
3992 if (EDIT_CheckCombo(es, WM_SYSKEYDOWN, key))
3993 return 0;
3994 }
3995 return DefWindowProcW(es->hwndSelf, WM_SYSKEYDOWN, key, key_data);
3996 }
3997
3998
3999 /*********************************************************************
4000 *
4001 * WM_TIMER
4002 *
4003 */
4004 static void EDIT_WM_Timer(EDITSTATE *es)
4005 {
4006 if (es->region_posx < 0) {
4007 EDIT_MoveBackward(es, TRUE);
4008 } else if (es->region_posx > 0) {
4009 EDIT_MoveForward(es, TRUE);
4010 }
4011 /*
4012 * FIXME: gotta do some vertical scrolling here, like
4013 * EDIT_EM_LineScroll(hwnd, 0, 1);
4014 */
4015 }
4016
4017 /*********************************************************************
4018 *
4019 * WM_HSCROLL
4020 *
4021 */
4022 static LRESULT EDIT_WM_HScroll(EDITSTATE *es, INT action, INT pos)
4023 {
4024 INT dx;
4025 INT fw;
4026
4027 if (!(es->style & ES_MULTILINE))
4028 return 0;
4029
4030 if (!(es->style & ES_AUTOHSCROLL))
4031 return 0;
4032
4033 dx = 0;
4034 fw = es->format_rect.right - es->format_rect.left;
4035 switch (action) {
4036 case SB_LINELEFT:
4037 TRACE("SB_LINELEFT\n");
4038 if (es->x_offset)
4039 dx = -es->char_width;
4040 break;
4041 case SB_LINERIGHT:
4042 TRACE("SB_LINERIGHT\n");
4043 if (es->x_offset < es->text_width)
4044 dx = es->char_width;
4045 break;
4046 case SB_PAGELEFT:
4047 TRACE("SB_PAGELEFT\n");
4048 if (es->x_offset)
4049 dx = -fw / HSCROLL_FRACTION / es->char_width * es->char_width;
4050 break;
4051 case SB_PAGERIGHT:
4052 TRACE("SB_PAGERIGHT\n");
4053 if (es->x_offset < es->text_width)
4054 dx = fw / HSCROLL_FRACTION / es->char_width * es->char_width;
4055 break;
4056 case SB_LEFT:
4057 TRACE("SB_LEFT\n");
4058 if (es->x_offset)
4059 dx = -es->x_offset;
4060 break;
4061 case SB_RIGHT:
4062 TRACE("SB_RIGHT\n");
4063 if (es->x_offset < es->text_width)
4064 dx = es->text_width - es->x_offset;
4065 break;
4066 case SB_THUMBTRACK:
4067 TRACE("SB_THUMBTRACK %d\n", pos);
4068 es->flags |= EF_HSCROLL_TRACK;
4069 if(es->style & WS_HSCROLL)
4070 dx = pos - es->x_offset;
4071 else
4072 {
4073 INT fw, new_x;
4074 /* Sanity check */
4075 if(pos < 0 || pos > 100) return 0;
4076 /* Assume default scroll range 0-100 */
4077 fw = es->format_rect.right - es->format_rect.left;
4078 new_x = pos * (es->text_width - fw) / 100;
4079 dx = es->text_width ? (new_x - es->x_offset) : 0;
4080 }
4081 break;
4082 case SB_THUMBPOSITION:
4083 TRACE("SB_THUMBPOSITION %d\n", pos);
4084 es->flags &= ~EF_HSCROLL_TRACK;
4085 if(GetWindowLongW( es->hwndSelf, GWL_STYLE ) & WS_HSCROLL)
4086 dx = pos - es->x_offset;
4087 else
4088 {
4089 INT fw, new_x;
4090 /* Sanity check */
4091 if(pos < 0 || pos > 100) return 0;
4092 /* Assume default scroll range 0-100 */
4093 fw = es->format_rect.right - es->format_rect.left;
4094 new_x = pos * (es->text_width - fw) / 100;
4095 dx = es->text_width ? (new_x - es->x_offset) : 0;
4096 }
4097 if (!dx) {
4098 /* force scroll info update */
4099 EDIT_UpdateScrollInfo(es);
4100 EDIT_NOTIFY_PARENT(es, EN_HSCROLL);
4101 }
4102 break;
4103 case SB_ENDSCROLL:
4104 TRACE("SB_ENDSCROLL\n");
4105 break;
4106 /*
4107 * FIXME : the next two are undocumented !
4108 * Are we doing the right thing ?
4109 * At least Win 3.1 Notepad makes use of EM_GETTHUMB this way,
4110 * although it's also a regular control message.
4111 */
4112 case EM_GETTHUMB: /* this one is used by NT notepad */
4113 {
4114 LRESULT ret;
4115 if(GetWindowLongW( es->hwndSelf, GWL_STYLE ) & WS_HSCROLL)
4116 ret = GetScrollPos(es->hwndSelf, SB_HORZ);
4117 else
4118 {
4119 /* Assume default scroll range 0-100 */
4120 INT fw = es->format_rect.right - es->format_rect.left;
4121 ret = es->text_width ? es->x_offset * 100 / (es->text_width - fw) : 0;
4122 }
4123 TRACE("EM_GETTHUMB: returning %ld\n", ret);
4124 return ret;
4125 }
4126 case EM_LINESCROLL:
4127 TRACE("EM_LINESCROLL16\n");
4128 dx = pos;
4129 break;
4130
4131 default:
4132 ERR("undocumented WM_HSCROLL action %d (0x%04x), please report\n",
4133 action, action);
4134 return 0;
4135 }
4136 if (dx)
4137 {
4138 INT fw = es->format_rect.right - es->format_rect.left;
4139 /* check if we are going to move too far */
4140 if(es->x_offset + dx + fw > es->text_width)
4141 dx = es->text_width - fw - es->x_offset;
4142 if(dx)
4143 EDIT_EM_LineScroll_internal(es, dx, 0);
4144 }
4145 return 0;
4146 }
4147
4148
4149 /*********************************************************************
4150 *
4151 * WM_VSCROLL
4152 *
4153 */
4154 static LRESULT EDIT_WM_VScroll(EDITSTATE *es, INT action, INT pos)
4155 {
4156 INT dy;
4157
4158 if (!(es->style & ES_MULTILINE))
4159 return 0;
4160
4161 if (!(es->style & ES_AUTOVSCROLL))
4162 return 0;
4163
4164 dy = 0;
4165 switch (action) {
4166 case SB_LINEUP:
4167 case SB_LINEDOWN:
4168 case SB_PAGEUP:
4169 case SB_PAGEDOWN:
4170 TRACE("action %d (%s)\n", action, (action == SB_LINEUP ? "SB_LINEUP" :
4171 (action == SB_LINEDOWN ? "SB_LINEDOWN" :
4172 (action == SB_PAGEUP ? "SB_PAGEUP" :
4173 "SB_PAGEDOWN"))));
4174 EDIT_EM_Scroll(es, action);
4175 return 0;
4176 case SB_TOP:
4177 TRACE("SB_TOP\n");
4178 dy = -es->y_offset;
4179 break;
4180 case SB_BOTTOM:
4181 TRACE("SB_BOTTOM\n");
4182 dy = es->line_count - 1 - es->y_offset;
4183 break;
4184 case SB_THUMBTRACK:
4185 TRACE("SB_THUMBTRACK %d\n", pos);
4186 es->flags |= EF_VSCROLL_TRACK;
4187 if(es->style & WS_VSCROLL)
4188 dy = pos - es->y_offset;
4189 else
4190 {
4191 /* Assume default scroll range 0-100 */
4192 INT vlc, new_y;
4193 /* Sanity check */
4194 if(pos < 0 || pos > 100) return 0;
4195 vlc = get_vertical_line_count(es);
4196 new_y = pos * (es->line_count - vlc) / 100;
4197 dy = es->line_count ? (new_y - es->y_offset) : 0;
4198 TRACE("line_count=%d, y_offset=%d, pos=%d, dy = %d\n",
4199 es->line_count, es->y_offset, pos, dy);
4200 }
4201 break;
4202 case SB_THUMBPOSITION:
4203 TRACE("SB_THUMBPOSITION %d\n", pos);
4204 es->flags &= ~EF_VSCROLL_TRACK;
4205 if(es->style & WS_VSCROLL)
4206 dy = pos - es->y_offset;
4207 else
4208 {
4209 /* Assume default scroll range 0-100 */
4210 INT vlc, new_y;
4211 /* Sanity check */
4212 if(pos < 0 || pos > 100) return 0;
4213 vlc = get_vertical_line_count(es);
4214 new_y = pos * (es->line_count - vlc) / 100;
4215 dy = es->line_count ? (new_y - es->y_offset) : 0;
4216 TRACE("line_count=%d, y_offset=%d, pos=%d, dy = %d\n",
4217 es->line_count, es->y_offset, pos, dy);
4218 }
4219 if (!dy)
4220 {
4221 /* force scroll info update */
4222 EDIT_UpdateScrollInfo(es);
4223 EDIT_NOTIFY_PARENT(es, EN_VSCROLL);
4224 }
4225 break;
4226 case SB_ENDSCROLL:
4227 TRACE("SB_ENDSCROLL\n");
4228 break;
4229 /*
4230 * FIXME : the next two are undocumented !
4231 * Are we doing the right thing ?
4232 * At least Win 3.1 Notepad makes use of EM_GETTHUMB this way,
4233 * although it's also a regular control message.
4234 */
4235 case EM_GETTHUMB: /* this one is used by NT notepad */
4236 {
4237 LRESULT ret;
4238 if(GetWindowLongW( es->hwndSelf, GWL_STYLE ) & WS_VSCROLL)
4239 ret = GetScrollPos(es->hwndSelf, SB_VERT);
4240 else
4241 {
4242 /* Assume default scroll range 0-100 */
4243 INT vlc = get_vertical_line_count(es);
4244 ret = es->line_count ? es->y_offset * 100 / (es->line_count - vlc) : 0;
4245 }
4246 TRACE("EM_GETTHUMB: returning %ld\n", ret);
4247 return ret;
4248 }
4249 case EM_LINESCROLL:
4250 TRACE("EM_LINESCROLL %d\n", pos);
4251 dy = pos;
4252 break;
4253
4254 default:
4255 ERR("undocumented WM_VSCROLL action %d (0x%04x), please report\n",
4256 action, action);
4257 return 0;
4258 }
4259 if (dy)
4260 EDIT_EM_LineScroll(es, 0, dy);
4261 return 0;
4262 }
4263
4264 /*********************************************************************
4265 *
4266 * EM_GETTHUMB
4267 *
4268 * FIXME: is this right ? (or should it be only VSCROLL)
4269 * (and maybe only for edit controls that really have their
4270 * own scrollbars) (and maybe only for multiline controls ?)
4271 * All in all: very poorly documented
4272 *
4273 */
4274 static LRESULT EDIT_EM_GetThumb(EDITSTATE *es)
4275 {
4276 return MAKELONG(EDIT_WM_VScroll(es, EM_GETTHUMB, 0),
4277 EDIT_WM_HScroll(es, EM_GETTHUMB, 0));
4278 }
4279
4280
4281 /********************************************************************
4282 *
4283 * The Following code is to handle inline editing from IMEs
4284 */
4285
4286 static void EDIT_GetCompositionStr(HIMC hIMC, LPARAM CompFlag, EDITSTATE *es)
4287 {
4288 LONG buflen;
4289 LPWSTR lpCompStr;
4290 LPSTR lpCompStrAttr = NULL;
4291 DWORD dwBufLenAttr;
4292
4293 buflen = ImmGetCompositionStringW(hIMC, GCS_COMPSTR, NULL, 0);
4294
4295 if (buflen < 0)
4296 {
4297 return;
4298 }
4299
4300 lpCompStr = HeapAlloc(GetProcessHeap(),0,buflen);
4301 if (!lpCompStr)
4302 {
4303 ERR("Unable to allocate IME CompositionString\n");
4304 return;
4305 }
4306
4307 if (buflen)
4308 ImmGetCompositionStringW(hIMC, GCS_COMPSTR, lpCompStr, buflen);
4309
4310 if (CompFlag & GCS_COMPATTR)
4311 {
4312 /*
4313 * We do not use the attributes yet. it would tell us what characters
4314 * are in transition and which are converted or decided upon
4315 */
4316 dwBufLenAttr = ImmGetCompositionStringW(hIMC, GCS_COMPATTR, NULL, 0);
4317 if (dwBufLenAttr)
4318 {
4319 dwBufLenAttr ++;
4320 lpCompStrAttr = HeapAlloc(GetProcessHeap(),0,dwBufLenAttr+1);
4321 if (!lpCompStrAttr)
4322 {
4323 ERR("Unable to allocate IME Attribute String\n");
4324 HeapFree(GetProcessHeap(),0,lpCompStr);
4325 return;
4326 }
4327 ImmGetCompositionStringW(hIMC,GCS_COMPATTR, lpCompStrAttr,
4328 dwBufLenAttr);
4329 lpCompStrAttr[dwBufLenAttr] = 0;
4330 }
4331 }
4332
4333 /* check for change in composition start */
4334 if (es->selection_end < es->composition_start)
4335 es->composition_start = es->selection_end;
4336
4337 /* replace existing selection string */
4338 es->selection_start = es->composition_start;
4339
4340 if (es->composition_len > 0)
4341 es->selection_end = es->composition_start + es->composition_len;
4342 else
4343 es->selection_end = es->selection_start;
4344
4345 EDIT_EM_ReplaceSel(es, FALSE, lpCompStr, buflen / sizeof(WCHAR), TRUE, TRUE);
4346 es->composition_len = abs(es->composition_start - es->selection_end);
4347
4348 es->selection_start = es->composition_start;
4349 es->selection_end = es->selection_start + es->composition_len;
4350
4351 HeapFree(GetProcessHeap(),0,lpCompStrAttr);
4352 HeapFree(GetProcessHeap(),0,lpCompStr);
4353 }
4354
4355 static void EDIT_GetResultStr(HIMC hIMC, EDITSTATE *es)
4356 {
4357 LONG buflen;
4358 LPWSTR lpResultStr;
4359
4360 buflen = ImmGetCompositionStringW(hIMC, GCS_RESULTSTR, NULL, 0);
4361 if (buflen <= 0)
4362 {
4363 return;
4364 }
4365
4366 lpResultStr = HeapAlloc(GetProcessHeap(),0, buflen);
4367 if (!lpResultStr)
4368 {
4369 ERR("Unable to alloc buffer for IME string\n");
4370 return;
4371 }
4372
4373 ImmGetCompositionStringW(hIMC, GCS_RESULTSTR, lpResultStr, buflen);
4374
4375 /* check for change in composition start */
4376 if (es->selection_end < es->composition_start)
4377 es->composition_start = es->selection_end;
4378
4379 es->selection_start = es->composition_start;
4380 es->selection_end = es->composition_start + es->composition_len;
4381 EDIT_EM_ReplaceSel(es, TRUE, lpResultStr, buflen / sizeof(WCHAR), TRUE, TRUE);
4382 es->composition_start = es->selection_end;
4383 es->composition_len = 0;
4384
4385 HeapFree(GetProcessHeap(),0,lpResultStr);
4386 }
4387
4388 static void EDIT_ImeComposition(HWND hwnd, LPARAM CompFlag, EDITSTATE *es)
4389 {
4390 HIMC hIMC;
4391 int cursor;
4392
4393 if (es->composition_len == 0 && es->selection_start != es->selection_end)
4394 {
4395 EDIT_EM_ReplaceSel(es, TRUE, NULL, 0, TRUE, TRUE);
4396 es->composition_start = es->selection_end;
4397 }
4398
4399 hIMC = ImmGetContext(hwnd);
4400 if (!hIMC)
4401 return;
4402
4403 if (CompFlag & GCS_RESULTSTR)
4404 {
4405 EDIT_GetResultStr(hIMC, es);
4406 cursor = 0;
4407 }
4408 else
4409 {
4410 if (CompFlag & GCS_COMPSTR)
4411 EDIT_GetCompositionStr(hIMC, CompFlag, es);
4412 cursor = ImmGetCompositionStringW(hIMC, GCS_CURSORPOS, 0, 0);
4413 }
4414 ImmReleaseContext(hwnd, hIMC);
4415 EDIT_SetCaretPos(es, es->selection_start + cursor, es->flags & EF_AFTER_WRAP);
4416 }
4417
4418
4419 /*********************************************************************
4420 *
4421 * WM_NCCREATE
4422 *
4423 * See also EDIT_WM_StyleChanged
4424 */
4425 static LRESULT EDIT_WM_NCCreate(HWND hwnd, LPCREATESTRUCTW lpcs, BOOL unicode)
4426 {
4427 EDITSTATE *es;
4428 UINT alloc_size;
4429
4430 TRACE("Creating %s edit control, style = %08x\n",
4431 unicode ? "Unicode" : "ANSI", lpcs->style);
4432
4433 if (!(es = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, sizeof(*es))))
4434 return FALSE;
4435 SetWindowLongPtrW( hwnd, 0, (LONG_PTR)es );
4436
4437 /*
4438 * Note: since the EDITSTATE has not been fully initialized yet,
4439 * we can't use any API calls that may send
4440 * WM_XXX messages before WM_NCCREATE is completed.
4441 */
4442
4443 es->is_unicode = unicode;
4444 es->style = lpcs->style;
4445
4446 es->bEnableState = !(es->style & WS_DISABLED);
4447
4448 es->hwndSelf = hwnd;
4449 /* Save parent, which will be notified by EN_* messages */
4450 es->hwndParent = lpcs->hwndParent;
4451
4452 if (es->style & ES_COMBO)
4453 es->hwndListBox = GetDlgItem(es->hwndParent, ID_CB_LISTBOX);
4454
4455 /* FIXME: should we handle changes to WS_EX_RIGHT style after creation? */
4456 if (lpcs->dwExStyle & WS_EX_RIGHT) es->style |= ES_RIGHT;
4457
4458 /* Number overrides lowercase overrides uppercase (at least it
4459 * does in Win95). However I'll bet that ES_NUMBER would be
4460 * invalid under Win 3.1.
4461 */
4462 if (es->style & ES_NUMBER) {
4463 ; /* do not override the ES_NUMBER */
4464 } else if (es->style & ES_LOWERCASE) {
4465 es->style &= ~ES_UPPERCASE;
4466 }
4467 if (es->style & ES_MULTILINE) {
4468 es->buffer_limit = BUFLIMIT_INITIAL;
4469 if (es->style & WS_VSCROLL)
4470 es->style |= ES_AUTOVSCROLL;
4471 if (es->style & WS_HSCROLL)
4472 es->style |= ES_AUTOHSCROLL;
4473 es->style &= ~ES_PASSWORD;
4474 if ((es->style & ES_CENTER) || (es->style & ES_RIGHT)) {
4475 /* Confirmed - RIGHT overrides CENTER */
4476 if (es->style & ES_RIGHT)
4477 es->style &= ~ES_CENTER;
4478 es->style &= ~WS_HSCROLL;
4479 es->style &= ~ES_AUTOHSCROLL;
4480 }
4481 } else {
4482 es->buffer_limit = BUFLIMIT_INITIAL;
4483 if ((es->style & ES_RIGHT) && (es->style & ES_CENTER))
4484 es->style &= ~ES_CENTER;
4485 es->style &= ~WS_HSCROLL;
4486 es->style &= ~WS_VSCROLL;
4487 if (es->style & ES_PASSWORD)
4488 es->password_char = '*';
4489 }
4490
4491 alloc_size = ROUND_TO_GROW((es->buffer_size + 1) * sizeof(WCHAR));
4492 if(!(es->hloc32W = LocalAlloc(LMEM_MOVEABLE | LMEM_ZEROINIT, alloc_size)))
4493 goto cleanup;
4494 es->buffer_size = LocalSize(es->hloc32W)/sizeof(WCHAR) - 1;
4495
4496 if (!(es->undo_text = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, (es->buffer_size + 1) * sizeof(WCHAR))))
4497 goto cleanup;
4498 es->undo_buffer_size = es->buffer_size;
4499
4500 if (es->style & ES_MULTILINE)
4501 if (!(es->first_line_def = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, sizeof(LINEDEF))))
4502 goto cleanup;
4503 es->line_count = 1;
4504
4505 /*
4506 * In Win95 look and feel, the WS_BORDER style is replaced by the
4507 * WS_EX_CLIENTEDGE style for the edit control. This gives the edit
4508 * control a nonclient area so we don't need to draw the border.
4509 * If WS_BORDER without WS_EX_CLIENTEDGE is specified we shouldn't have
4510 * a nonclient area and we should handle painting the border ourselves.
4511 *
4512 * When making modifications please ensure that the code still works
4513 * for edit controls created directly with style 0x50800000, exStyle 0
4514 * (which should have a single pixel border)
4515 */
4516 if (lpcs->dwExStyle & WS_EX_CLIENTEDGE)
4517 es->style &= ~WS_BORDER;
4518 else if (es->style & WS_BORDER)
4519 SetWindowLongW(hwnd, GWL_STYLE, es->style & ~WS_BORDER);
4520
4521 return TRUE;
4522
4523 cleanup:
4524 SetWindowLongPtrW(es->hwndSelf, 0, 0);
4525 EDIT_InvalidateUniscribeData(es);
4526 HeapFree(GetProcessHeap(), 0, es->first_line_def);
4527 HeapFree(GetProcessHeap(), 0, es->undo_text);
4528 if (es->hloc32W) LocalFree(es->hloc32W);
4529 HeapFree(GetProcessHeap(), 0, es->logAttr);
4530 HeapFree(GetProcessHeap(), 0, es);
4531 return FALSE;
4532 }
4533
4534
4535 /*********************************************************************
4536 *
4537 * WM_CREATE
4538 *
4539 */
4540 static LRESULT EDIT_WM_Create(EDITSTATE *es, LPCWSTR name)
4541 {
4542 RECT clientRect;
4543
4544 TRACE("%s\n", debugstr_w(name));
4545 /*
4546 * To initialize some final structure members, we call some helper
4547 * functions. However, since the EDITSTATE is not consistent (i.e.
4548 * not fully initialized), we should be very careful which
4549 * functions can be called, and in what order.
4550 */
4551 EDIT_WM_SetFont(es, 0, FALSE);
4552 EDIT_EM_EmptyUndoBuffer(es);
4553
4554 /* We need to calculate the format rect
4555 (applications may send EM_SETMARGINS before the control gets visible) */
4556 GetClientRect(es->hwndSelf, &clientRect);
4557 EDIT_SetRectNP(es, &clientRect);
4558
4559 if (name && *name) {
4560 EDIT_EM_ReplaceSel(es, FALSE, name, strlenW(name), FALSE, FALSE);
4561 /* if we insert text to the editline, the text scrolls out
4562 * of the window, as the caret is placed after the insert
4563 * pos normally; thus we reset es->selection... to 0 and
4564 * update caret
4565 */
4566 es->selection_start = es->selection_end = 0;
4567 /* Adobe Photoshop does NOT like this. and MSDN says that EN_CHANGE
4568 * Messages are only to be sent when the USER does something to
4569 * change the contents. So I am removing this EN_CHANGE
4570 *
4571 * EDIT_NOTIFY_PARENT(es, EN_CHANGE);
4572 */
4573 EDIT_EM_ScrollCaret(es);
4574 }
4575 /* force scroll info update */
4576 EDIT_UpdateScrollInfo(es);
4577 /* The rule seems to return 1 here for success */
4578 /* Power Builder masked edit controls will crash */
4579 /* if not. */
4580 /* FIXME: is that in all cases so ? */
4581 return 1;
4582 }
4583
4584
4585 /*********************************************************************
4586 *
4587 * WM_NCDESTROY
4588 *
4589 */
4590 static LRESULT EDIT_WM_NCDestroy(EDITSTATE *es)
4591 {
4592 LINEDEF *pc, *pp;
4593
4594 /* The app can own the text buffer handle */
4595 if (es->hloc32W && (es->hloc32W != es->hlocapp)) {
4596 LocalFree(es->hloc32W);
4597 }
4598 if (es->hloc32A && (es->hloc32A != es->hlocapp)) {
4599 LocalFree(es->hloc32A);
4600 }
4601 EDIT_InvalidateUniscribeData(es);
4602 pc = es->first_line_def;
4603 while (pc)
4604 {
4605 pp = pc->next;
4606 HeapFree(GetProcessHeap(), 0, pc);
4607 pc = pp;
4608 }
4609
4610 SetWindowLongPtrW( es->hwndSelf, 0, 0 );
4611 HeapFree(GetProcessHeap(), 0, es->undo_text);
4612 HeapFree(GetProcessHeap(), 0, es);
4613
4614 return 0;
4615 }
4616
4617
4618 static inline LRESULT DefWindowProcT(HWND hwnd, UINT msg, WPARAM wParam, LPARAM lParam, BOOL unicode)
4619 {
4620 if(unicode)
4621 return DefWindowProcW(hwnd, msg, wParam, lParam);
4622 else
4623 return DefWindowProcA(hwnd, msg, wParam, lParam);
4624 }
4625
4626 /*********************************************************************
4627 *
4628 * EditWndProc_common
4629 *
4630 * The messages are in the order of the actual integer values
4631 * (which can be found in include/windows.h)
4632 */
4633 LRESULT EditWndProc_common( HWND hwnd, UINT msg, WPARAM wParam, LPARAM lParam, BOOL unicode )
4634 {
4635 EDITSTATE *es = (EDITSTATE *)GetWindowLongPtrW( hwnd, 0 );
4636 LRESULT result = 0;
4637
4638 TRACE("hwnd=%p msg=%x (%s) wparam=%lx lparam=%lx\n", hwnd, msg, SPY_GetMsgName(msg, hwnd), wParam, lParam);
4639
4640 if (!es && msg != WM_NCCREATE)
4641 return DefWindowProcT(hwnd, msg, wParam, lParam, unicode);
4642
4643 if (es && (msg != WM_NCDESTROY)) EDIT_LockBuffer(es);
4644
4645 switch (msg) {
4646 case EM_GETSEL:
4647 result = EDIT_EM_GetSel(es, (PUINT)wParam, (PUINT)lParam);
4648 break;
4649
4650 case EM_SETSEL:
4651 EDIT_EM_SetSel(es, wParam, lParam, FALSE);
4652 EDIT_EM_ScrollCaret(es);
4653 result = 1;
4654 break;
4655
4656 case EM_GETRECT:
4657 if (lParam)
4658 *((LPRECT)lParam) = es->format_rect;
4659 break;
4660
4661 case EM_SETRECT:
4662 if ((es->style & ES_MULTILINE) && lParam) {
4663 EDIT_SetRectNP(es, (LPRECT)lParam);
4664 EDIT_UpdateText(es, NULL, TRUE);
4665 }
4666 break;
4667
4668 case EM_SETRECTNP:
4669 if ((es->style & ES_MULTILINE) && lParam)
4670 EDIT_SetRectNP(es, (LPRECT)lParam);
4671 break;
4672
4673 case EM_SCROLL:
4674 result = EDIT_EM_Scroll(es, (INT)wParam);
4675 break;
4676
4677 case EM_LINESCROLL:
4678 result = (LRESULT)EDIT_EM_LineScroll(es, (INT)wParam, (INT)lParam);
4679 break;
4680
4681 case EM_SCROLLCARET:
4682 EDIT_EM_ScrollCaret(es);
4683 result = 1;
4684 break;
4685
4686 case EM_GETMODIFY:
4687 result = ((es->flags & EF_MODIFIED) != 0);
4688 break;
4689
4690 case EM_SETMODIFY:
4691 if (wParam)
4692 es->flags |= EF_MODIFIED;
4693 else
4694 es->flags &= ~(EF_MODIFIED | EF_UPDATE); /* reset pending updates */
4695 break;
4696
4697 case EM_GETLINECOUNT:
4698 result = (es->style & ES_MULTILINE) ? es->line_count : 1;
4699 break;
4700
4701 case EM_LINEINDEX:
4702 result = (LRESULT)EDIT_EM_LineIndex(es, (INT)wParam);
4703 break;
4704
4705 case EM_SETHANDLE:
4706 EDIT_EM_SetHandle(es, (HLOCAL)wParam);
4707 break;
4708
4709 case EM_GETHANDLE:
4710 result = (LRESULT)EDIT_EM_GetHandle(es);
4711 break;
4712
4713 case EM_GETTHUMB:
4714 result = EDIT_EM_GetThumb(es);
4715 break;
4716
4717 /* these messages missing from specs */
4718 case 0x00bf:
4719 case 0x00c0:
4720 case 0x00c3:
4721 case 0x00ca:
4722 FIXME("undocumented message 0x%x, please report\n", msg);
4723 result = DefWindowProcW(hwnd, msg, wParam, lParam);
4724 break;
4725
4726 case EM_LINELENGTH:
4727 result = (LRESULT)EDIT_EM_LineLength(es, (INT)wParam);
4728 break;
4729
4730 case EM_REPLACESEL:
4731 {
4732 LPWSTR textW;
4733
4734 if(unicode)
4735 textW = (LPWSTR)lParam;
4736 else
4737 {
4738 LPSTR textA = (LPSTR)lParam;
4739 INT countW = MultiByteToWideChar(CP_ACP, 0, textA, -1, NULL, 0);
4740 if (!(textW = HeapAlloc(GetProcessHeap(), 0, countW * sizeof(WCHAR)))) break;
4741 MultiByteToWideChar(CP_ACP, 0, textA, -1, textW, countW);
4742 }
4743
4744 EDIT_EM_ReplaceSel(es, (BOOL)wParam, textW, strlenW(textW), TRUE, TRUE);
4745 result = 1;
4746
4747 if(!unicode)
4748 HeapFree(GetProcessHeap(), 0, textW);
4749 break;
4750 }
4751
4752 case EM_GETLINE:
4753 result = (LRESULT)EDIT_EM_GetLine(es, (INT)wParam, (LPWSTR)lParam, unicode);
4754 break;
4755
4756 case EM_SETLIMITTEXT:
4757 EDIT_EM_SetLimitText(es, wParam);
4758 break;
4759
4760 case EM_CANUNDO:
4761 result = (LRESULT)EDIT_EM_CanUndo(es);
4762 break;
4763
4764 case EM_UNDO:
4765 case WM_UNDO:
4766 result = (LRESULT)EDIT_EM_Undo(es);
4767 break;
4768
4769 case EM_FMTLINES:
4770 result = (LRESULT)EDIT_EM_FmtLines(es, (BOOL)wParam);
4771 break;
4772
4773 case EM_LINEFROMCHAR:
4774 result = (LRESULT)EDIT_EM_LineFromChar(es, (INT)wParam);
4775 break;
4776
4777 case EM_SETTABSTOPS:
4778 result = (LRESULT)EDIT_EM_SetTabStops(es, (INT)wParam, (LPINT)lParam);
4779 break;
4780
4781 case EM_SETPASSWORDCHAR:
4782 {
4783 WCHAR charW = 0;
4784
4785 if(unicode)
4786 charW = (WCHAR)wParam;
4787 else
4788 {
4789 CHAR charA = wParam;
4790 MultiByteToWideChar(CP_ACP, 0, &charA, 1, &charW, 1);
4791 }
4792
4793 EDIT_EM_SetPasswordChar(es, charW);
4794 break;
4795 }
4796
4797 case EM_EMPTYUNDOBUFFER:
4798 EDIT_EM_EmptyUndoBuffer(es);
4799 break;
4800
4801 case EM_GETFIRSTVISIBLELINE:
4802 result = (es->style & ES_MULTILINE) ? es->y_offset : es->x_offset;
4803 break;
4804
4805 case EM_SETREADONLY:
4806 {
4807 DWORD old_style = es->style;
4808
4809 if (wParam) {
4810 SetWindowLongW( hwnd, GWL_STYLE,
4811 GetWindowLongW( hwnd, GWL_STYLE ) | ES_READONLY );
4812 es->style |= ES_READONLY;
4813 } else {
4814 SetWindowLongW( hwnd, GWL_STYLE,
4815 GetWindowLongW( hwnd, GWL_STYLE ) & ~ES_READONLY );
4816 es->style &= ~ES_READONLY;
4817 }
4818
4819 if (old_style ^ es->style)
4820 InvalidateRect(es->hwndSelf, NULL, TRUE);
4821
4822 result = 1;
4823 break;
4824 }
4825
4826 case EM_SETWORDBREAKPROC:
4827 EDIT_EM_SetWordBreakProc(es, (void *)lParam);
4828 result = 1;
4829 break;
4830
4831 case EM_GETWORDBREAKPROC:
4832 result = (LRESULT)es->word_break_proc;
4833 break;
4834
4835 case EM_GETPASSWORDCHAR:
4836 {
4837 if(unicode)
4838 result = es->password_char;
4839 else
4840 {
4841 WCHAR charW = es->password_char;
4842 CHAR charA = 0;
4843 WideCharToMultiByte(CP_ACP, 0, &charW, 1, &charA, 1, NULL, NULL);
4844 result = charA;
4845 }
4846 break;
4847 }
4848
4849 case EM_SETMARGINS:
4850 EDIT_EM_SetMargins(es, (INT)wParam, LOWORD(lParam), HIWORD(lParam), TRUE);
4851 break;
4852
4853 case EM_GETMARGINS:
4854 result = MAKELONG(es->left_margin, es->right_margin);
4855 break;
4856
4857 case EM_GETLIMITTEXT:
4858 result = es->buffer_limit;
4859 break;
4860
4861 case EM_POSFROMCHAR:
4862 if ((INT)wParam >= get_text_length(es)) result = -1;
4863 else result = EDIT_EM_PosFromChar(es, (INT)wParam, FALSE);
4864 break;
4865
4866 case EM_CHARFROMPOS:
4867 result = EDIT_EM_CharFromPos(es, (short)LOWORD(lParam), (short)HIWORD(lParam));
4868 break;
4869
4870 /* End of the EM_ messages which were in numerical order; what order
4871 * are these in? vaguely alphabetical?
4872 */
4873
4874 case WM_NCCREATE:
4875 result = EDIT_WM_NCCreate(hwnd, (LPCREATESTRUCTW)lParam, unicode);
4876 break;
4877
4878 case WM_NCDESTROY:
4879 result = EDIT_WM_NCDestroy(es);
4880 es = NULL;
4881 break;
4882
4883 case WM_GETDLGCODE:
4884 result = DLGC_HASSETSEL | DLGC_WANTCHARS | DLGC_WANTARROWS;
4885
4886 if (es->style & ES_MULTILINE)
4887 result |= DLGC_WANTALLKEYS;
4888
4889 if (lParam)
4890 {
4891 es->flags|=EF_DIALOGMODE;
4892
4893 if (((LPMSG)lParam)->message == WM_KEYDOWN)
4894 {
4895 int vk = (int)((LPMSG)lParam)->wParam;
4896
4897 if (es->hwndListBox)
4898 {
4899 if (vk == VK_RETURN || vk == VK_ESCAPE)
4900 if (SendMessageW(GetParent(hwnd), CB_GETDROPPEDSTATE, 0, 0))
4901 result |= DLGC_WANTMESSAGE;
4902 }
4903 }
4904 }
4905 break;
4906
4907 case WM_IME_CHAR:
4908 if (!unicode)
4909 {
4910 WCHAR charW;
4911 CHAR strng[2];
4912
4913 strng[0] = wParam >> 8;
4914 strng[1] = wParam & 0xff;
4915 if (strng[0]) MultiByteToWideChar(CP_ACP, 0, strng, 2, &charW, 1);
4916 else MultiByteToWideChar(CP_ACP, 0, &strng[1], 1, &charW, 1);
4917 result = EDIT_WM_Char(es, charW);
4918 break;
4919 }
4920 /* fall through */
4921 case WM_CHAR:
4922 {
4923 WCHAR charW;
4924
4925 if(unicode)
4926 charW = wParam;
4927 else
4928 {
4929 CHAR charA = wParam;
4930 MultiByteToWideChar(CP_ACP, 0, &charA, 1, &charW, 1);
4931 }
4932
4933 if (es->hwndListBox)
4934 {
4935 if (charW == VK_RETURN || charW == VK_ESCAPE)
4936 {
4937 if (SendMessageW(GetParent(hwnd), CB_GETDROPPEDSTATE, 0, 0))
4938 SendMessageW(GetParent(hwnd), WM_KEYDOWN, charW, 0);
4939 break;
4940 }
4941 }
4942 result = EDIT_WM_Char(es, charW);
4943 break;
4944 }
4945
4946 case WM_UNICHAR:
4947 if (unicode)
4948 {
4949 if (wParam == UNICODE_NOCHAR) return TRUE;
4950 if (wParam <= 0x000fffff)
4951 {
4952 if(wParam > 0xffff) /* convert to surrogates */
4953 {
4954 wParam -= 0x10000;
4955 EDIT_WM_Char(es, (wParam >> 10) + 0xd800);
4956 EDIT_WM_Char(es, (wParam & 0x03ff) + 0xdc00);
4957 }
4958 else EDIT_WM_Char(es, wParam);
4959 }
4960 return 0;
4961 }
4962 break;
4963
4964 case WM_CLEAR:
4965 EDIT_WM_Clear(es);
4966 break;
4967
4968 case WM_CONTEXTMENU:
4969 EDIT_WM_ContextMenu(es, (short)LOWORD(lParam), (short)HIWORD(lParam));
4970 break;
4971
4972 case WM_COPY:
4973 EDIT_WM_Copy(es);
4974 break;
4975
4976 case WM_CREATE:
4977 if(unicode)
4978 result = EDIT_WM_Create(es, ((LPCREATESTRUCTW)lParam)->lpszName);
4979 else
4980 {
4981 LPCSTR nameA = ((LPCREATESTRUCTA)lParam)->lpszName;
4982 LPWSTR nameW = NULL;
4983 if(nameA)
4984 {
4985 INT countW = MultiByteToWideChar(CP_ACP, 0, nameA, -1, NULL, 0);
4986 if((nameW = HeapAlloc(GetProcessHeap(), 0, countW * sizeof(WCHAR))))
4987 MultiByteToWideChar(CP_ACP, 0, nameA, -1, nameW, countW);
4988 }
4989 result = EDIT_WM_Create(es, nameW);
4990 HeapFree(GetProcessHeap(), 0, nameW);
4991 }
4992 break;
4993
4994 case WM_CUT:
4995 EDIT_WM_Cut(es);
4996 break;
4997
4998 case WM_ENABLE:
4999 es->bEnableState = (BOOL) wParam;
5000 EDIT_UpdateText(es, NULL, TRUE);
5001 break;
5002
5003 case WM_ERASEBKGND:
5004 /* we do the proper erase in EDIT_WM_Paint */
5005 result = 1;
5006 break;
5007
5008 case WM_GETFONT:
5009 result = (LRESULT)es->font;
5010 break;
5011
5012 case WM_GETTEXT:
5013 result = (LRESULT)EDIT_WM_GetText(es, (INT)wParam, (LPWSTR)lParam, unicode);
5014 break;
5015
5016 case WM_GETTEXTLENGTH:
5017 if (unicode) result = get_text_length(es);
5018 else result = WideCharToMultiByte( CP_ACP, 0, es->text, get_text_length(es),
5019 NULL, 0, NULL, NULL );
5020 break;
5021
5022 case WM_HSCROLL:
5023 result = EDIT_WM_HScroll(es, LOWORD(wParam), (short)HIWORD(wParam));
5024 break;
5025
5026 case WM_KEYDOWN:
5027 result = EDIT_WM_KeyDown(es, (INT)wParam);
5028 break;
5029
5030 case WM_KILLFOCUS:
5031 result = EDIT_WM_KillFocus(es);
5032 break;
5033
5034 case WM_LBUTTONDBLCLK:
5035 result = EDIT_WM_LButtonDblClk(es);
5036 break;
5037
5038 case WM_LBUTTONDOWN:
5039 result = EDIT_WM_LButtonDown(es, wParam, (short)LOWORD(lParam), (short)HIWORD(lParam));
5040 break;
5041
5042 case WM_LBUTTONUP:
5043 result = EDIT_WM_LButtonUp(es);
5044 break;
5045
5046 case WM_MBUTTONDOWN:
5047 result = EDIT_WM_MButtonDown(es);
5048 break;
5049
5050 case WM_MOUSEMOVE:
5051 result = EDIT_WM_MouseMove(es, (short)LOWORD(lParam), (short)HIWORD(lParam));
5052 break;
5053
5054 case WM_PRINTCLIENT:
5055 case WM_PAINT:
5056 EDIT_WM_Paint(es, (HDC)wParam);
5057 break;
5058
5059 case WM_PASTE:
5060 EDIT_WM_Paste(es);
5061 break;
5062
5063 case WM_SETFOCUS:
5064 EDIT_WM_SetFocus(es);
5065 break;
5066
5067 case WM_SETFONT:
5068 EDIT_WM_SetFont(es, (HFONT)wParam, LOWORD(lParam) != 0);
5069 break;
5070
5071 case WM_SETREDRAW:
5072 /* FIXME: actually set an internal flag and behave accordingly */
5073 break;
5074
5075 case WM_SETTEXT:
5076 EDIT_WM_SetText(es, (LPCWSTR)lParam, unicode);
5077 result = TRUE;
5078 break;
5079
5080 case WM_SIZE:
5081 EDIT_WM_Size(es, (UINT)wParam);
5082 break;
5083
5084 case WM_STYLECHANGED:
5085 result = EDIT_WM_StyleChanged(es, wParam, (const STYLESTRUCT *)lParam);
5086 break;
5087
5088 case WM_STYLECHANGING:
5089 result = 0; /* See EDIT_WM_StyleChanged */
5090 break;
5091
5092 case WM_SYSKEYDOWN:
5093 result = EDIT_WM_SysKeyDown(es, (INT)wParam, (DWORD)lParam);
5094 break;
5095
5096 case WM_TIMER:
5097 EDIT_WM_Timer(es);
5098 break;
5099
5100 case WM_VSCROLL:
5101 result = EDIT_WM_VScroll(es, LOWORD(wParam), (short)HIWORD(wParam));
5102 break;
5103
5104 case WM_MOUSEWHEEL:
5105 {
5106 int wheelDelta;
5107 UINT pulScrollLines = 3;
5108 SystemParametersInfoW(SPI_GETWHEELSCROLLLINES,0, &pulScrollLines, 0);
5109
5110 if (wParam & (MK_SHIFT | MK_CONTROL)) {
5111 result = DefWindowProcW(hwnd, msg, wParam, lParam);
5112 break;
5113 }
5114 wheelDelta = GET_WHEEL_DELTA_WPARAM(wParam);
5115 /* if scrolling changes direction, ignore left overs */
5116 if ((wheelDelta < 0 && es->wheelDeltaRemainder < 0) ||
5117 (wheelDelta > 0 && es->wheelDeltaRemainder > 0))
5118 es->wheelDeltaRemainder += wheelDelta;
5119 else
5120 es->wheelDeltaRemainder = wheelDelta;
5121 if (es->wheelDeltaRemainder && pulScrollLines)
5122 {
5123 int cLineScroll;
5124 pulScrollLines = (int) min((UINT) es->line_count, pulScrollLines);
5125 cLineScroll = pulScrollLines * (float)es->wheelDeltaRemainder / WHEEL_DELTA;
5126 es->wheelDeltaRemainder -= WHEEL_DELTA * cLineScroll / (int)pulScrollLines;
5127 result = EDIT_EM_LineScroll(es, 0, -cLineScroll);
5128 }
5129 }
5130 break;
5131
5132
5133 /* IME messages to make the edit control IME aware */
5134 case WM_IME_SETCONTEXT:
5135 break;
5136
5137 case WM_IME_STARTCOMPOSITION:
5138 es->composition_start = es->selection_end;
5139 es->composition_len = 0;
5140 break;
5141
5142 case WM_IME_COMPOSITION:
5143 EDIT_ImeComposition(hwnd, lParam, es);
5144 break;
5145
5146 case WM_IME_ENDCOMPOSITION:
5147 if (es->composition_len > 0)
5148 {
5149 EDIT_EM_ReplaceSel(es, TRUE, NULL, 0, TRUE, TRUE);
5150 es->selection_end = es->selection_start;
5151 es->composition_len= 0;
5152 }
5153 break;
5154
5155 case WM_IME_COMPOSITIONFULL:
5156 break;
5157
5158 case WM_IME_SELECT:
5159 break;
5160
5161 case WM_IME_CONTROL:
5162 break;
5163
5164 case WM_IME_REQUEST:
5165 switch (wParam)
5166 {
5167 case IMR_QUERYCHARPOSITION:
5168 {
5169 LRESULT pos;
5170 IMECHARPOSITION *chpos = (IMECHARPOSITION *)lParam;
5171
5172 pos = EDIT_EM_PosFromChar(es, es->selection_start + chpos->dwCharPos, FALSE);
5173 chpos->pt.x = LOWORD(pos);
5174 chpos->pt.y = HIWORD(pos);
5175 chpos->cLineHeight = es->line_height;
5176 chpos->rcDocument = es->format_rect;
5177 MapWindowPoints(hwnd, 0, &chpos->pt, 1);
5178 MapWindowPoints(hwnd, 0, (POINT*)&chpos->rcDocument, 2);
5179 result = 1;
5180 break;
5181 }
5182 }
5183 break;
5184
5185 default:
5186 result = DefWindowProcT(hwnd, msg, wParam, lParam, unicode);
5187 break;
5188 }
5189
5190 if (IsWindow(hwnd) && es && msg != EM_GETHANDLE)
5191 EDIT_UnlockBuffer(es, FALSE);
5192
5193 TRACE("hwnd=%p msg=%x (%s) -- 0x%08lx\n", hwnd, msg, SPY_GetMsgName(msg, hwnd), result);
5194
5195 return result;
5196 }
5197
5198
5199 /*********************************************************************
5200 * edit class descriptor
5201 */
5202 static const WCHAR editW[] = {'E','d','i','t',0};
5203 const struct builtin_class_descr EDIT_builtin_class =
5204 {
5205 editW, /* name */
5206 CS_DBLCLKS | CS_PARENTDC, /* style */
5207 WINPROC_EDIT, /* proc */
5208 #ifdef __i386__
5209 sizeof(EDITSTATE *) + sizeof(WORD), /* extra */
5210 #else
5211 sizeof(EDITSTATE *), /* extra */
5212 #endif
5213 IDC_IBEAM, /* cursor */
5214 0 /* brush */
5215 };
Windows API implementation