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user32: Also ignore dynamic DPI awareness changes when DPI scaling is disabled.
[wine.git] / dlls / user32 / edit.c
blob6f8f41238e3496df7b9d0ae0199997429442add4
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;
1803
1804 if (es->flags & EF_FOCUSED)
1805 {
1806 res = EDIT_EM_PosFromChar(es, pos, after_wrap);
1807 TRACE("%d - %dx%d\n", pos, (short)LOWORD(res), (short)HIWORD(res));
1808 SetCaretPos((short)LOWORD(res), (short)HIWORD(res));
1809 }
1810 }
1811
1812
1813 /*********************************************************************
1814 *
1815 * EM_SCROLLCARET
1816 *
1817 */
1818 static void EDIT_EM_ScrollCaret(EDITSTATE *es)
1819 {
1820 if (es->style & ES_MULTILINE) {
1821 INT l;
1822 INT vlc;
1823 INT ww;
1824 INT cw = es->char_width;
1825 INT x;
1826 INT dy = 0;
1827 INT dx = 0;
1828
1829 l = EDIT_EM_LineFromChar(es, es->selection_end);
1830 x = (short)LOWORD(EDIT_EM_PosFromChar(es, es->selection_end, es->flags & EF_AFTER_WRAP));
1831 vlc = get_vertical_line_count(es);
1832 if (l >= es->y_offset + vlc)
1833 dy = l - vlc + 1 - es->y_offset;
1834 if (l < es->y_offset)
1835 dy = l - es->y_offset;
1836 ww = es->format_rect.right - es->format_rect.left;
1837 if (x < es->format_rect.left)
1838 dx = x - es->format_rect.left - ww / HSCROLL_FRACTION / cw * cw;
1839 if (x > es->format_rect.right)
1840 dx = x - es->format_rect.left - (HSCROLL_FRACTION - 1) * ww / HSCROLL_FRACTION / cw * cw;
1841 if (dy || dx || (es->y_offset && (es->line_count - es->y_offset < vlc)))
1842 {
1843 /* check if we are going to move too far */
1844 if(es->x_offset + dx + ww > es->text_width)
1845 dx = es->text_width - ww - es->x_offset;
1846 if(dx || dy || (es->y_offset && (es->line_count - es->y_offset < vlc)))
1847 EDIT_EM_LineScroll_internal(es, dx, dy);
1848 }
1849 } else {
1850 INT x;
1851 INT goal;
1852 INT format_width;
1853
1854 x = (short)LOWORD(EDIT_EM_PosFromChar(es, es->selection_end, FALSE));
1855 format_width = es->format_rect.right - es->format_rect.left;
1856 if (x < es->format_rect.left) {
1857 goal = es->format_rect.left + format_width / HSCROLL_FRACTION;
1858 do {
1859 es->x_offset--;
1860 x = (short)LOWORD(EDIT_EM_PosFromChar(es, es->selection_end, FALSE));
1861 } while ((x < goal) && es->x_offset);
1862 /* FIXME: use ScrollWindow() somehow to improve performance */
1863 EDIT_UpdateText(es, NULL, TRUE);
1864 } else if (x > es->format_rect.right) {
1865 INT x_last;
1866 INT len = get_text_length(es);
1867 goal = es->format_rect.right - format_width / HSCROLL_FRACTION;
1868 do {
1869 es->x_offset++;
1870 x = (short)LOWORD(EDIT_EM_PosFromChar(es, es->selection_end, FALSE));
1871 x_last = (short)LOWORD(EDIT_EM_PosFromChar(es, len, FALSE));
1872 } while ((x > goal) && (x_last > es->format_rect.right));
1873 /* FIXME: use ScrollWindow() somehow to improve performance */
1874 EDIT_UpdateText(es, NULL, TRUE);
1875 }
1876 }
1877
1878 EDIT_SetCaretPos(es, es->selection_end, es->flags & EF_AFTER_WRAP);
1879 }
1880
1881
1882 /*********************************************************************
1883 *
1884 * EDIT_MoveBackward
1885 *
1886 */
1887 static void EDIT_MoveBackward(EDITSTATE *es, BOOL extend)
1888 {
1889 INT e = es->selection_end;
1890
1891 if (e) {
1892 e--;
1893 if ((es->style & ES_MULTILINE) && e &&
1894 (es->text[e - 1] == '\r') && (es->text[e] == '\n')) {
1895 e--;
1896 if (e && (es->text[e - 1] == '\r'))
1897 e--;
1898 }
1899 }
1900 EDIT_EM_SetSel(es, extend ? es->selection_start : e, e, FALSE);
1901 EDIT_EM_ScrollCaret(es);
1902 }
1903
1904
1905 /*********************************************************************
1906 *
1907 * EDIT_MoveDown_ML
1908 *
1909 * Only for multi line controls
1910 * Move the caret one line down, on a column with the nearest
1911 * x coordinate on the screen (might be a different column).
1912 *
1913 */
1914 static void EDIT_MoveDown_ML(EDITSTATE *es, BOOL extend)
1915 {
1916 INT s = es->selection_start;
1917 INT e = es->selection_end;
1918 BOOL after_wrap = (es->flags & EF_AFTER_WRAP);
1919 LRESULT pos = EDIT_EM_PosFromChar(es, e, after_wrap);
1920 INT x = (short)LOWORD(pos);
1921 INT y = (short)HIWORD(pos);
1922
1923 e = EDIT_CharFromPos(es, x, y + es->line_height, &after_wrap);
1924 if (!extend)
1925 s = e;
1926 EDIT_EM_SetSel(es, s, e, after_wrap);
1927 EDIT_EM_ScrollCaret(es);
1928 }
1929
1930
1931 /*********************************************************************
1932 *
1933 * EDIT_MoveEnd
1934 *
1935 */
1936 static void EDIT_MoveEnd(EDITSTATE *es, BOOL extend, BOOL ctrl)
1937 {
1938 BOOL after_wrap = FALSE;
1939 INT e;
1940
1941 /* Pass a high value in x to make sure of receiving the end of the line */
1942 if (!ctrl && (es->style & ES_MULTILINE))
1943 e = EDIT_CharFromPos(es, 0x3fffffff,
1944 HIWORD(EDIT_EM_PosFromChar(es, es->selection_end, es->flags & EF_AFTER_WRAP)), &after_wrap);
1945 else
1946 e = get_text_length(es);
1947 EDIT_EM_SetSel(es, extend ? es->selection_start : e, e, after_wrap);
1948 EDIT_EM_ScrollCaret(es);
1949 }
1950
1951
1952 /*********************************************************************
1953 *
1954 * EDIT_MoveForward
1955 *
1956 */
1957 static void EDIT_MoveForward(EDITSTATE *es, BOOL extend)
1958 {
1959 INT e = es->selection_end;
1960
1961 if (es->text[e]) {
1962 e++;
1963 if ((es->style & ES_MULTILINE) && (es->text[e - 1] == '\r')) {
1964 if (es->text[e] == '\n')
1965 e++;
1966 else if ((es->text[e] == '\r') && (es->text[e + 1] == '\n'))
1967 e += 2;
1968 }
1969 }
1970 EDIT_EM_SetSel(es, extend ? es->selection_start : e, e, FALSE);
1971 EDIT_EM_ScrollCaret(es);
1972 }
1973
1974
1975 /*********************************************************************
1976 *
1977 * EDIT_MoveHome
1978 *
1979 * Home key: move to beginning of line.
1980 *
1981 */
1982 static void EDIT_MoveHome(EDITSTATE *es, BOOL extend, BOOL ctrl)
1983 {
1984 INT e;
1985
1986 /* Pass the x_offset in x to make sure of receiving the first position of the line */
1987 if (!ctrl && (es->style & ES_MULTILINE))
1988 e = EDIT_CharFromPos(es, -es->x_offset,
1989 HIWORD(EDIT_EM_PosFromChar(es, es->selection_end, es->flags & EF_AFTER_WRAP)), NULL);
1990 else
1991 e = 0;
1992 EDIT_EM_SetSel(es, extend ? es->selection_start : e, e, FALSE);
1993 EDIT_EM_ScrollCaret(es);
1994 }
1995
1996
1997 /*********************************************************************
1998 *
1999 * EDIT_MovePageDown_ML
2000 *
2001 * Only for multi line controls
2002 * Move the caret one page down, on a column with the nearest
2003 * x coordinate on the screen (might be a different column).
2004 *
2005 */
2006 static void EDIT_MovePageDown_ML(EDITSTATE *es, BOOL extend)
2007 {
2008 INT s = es->selection_start;
2009 INT e = es->selection_end;
2010 BOOL after_wrap = (es->flags & EF_AFTER_WRAP);
2011 LRESULT pos = EDIT_EM_PosFromChar(es, e, after_wrap);
2012 INT x = (short)LOWORD(pos);
2013 INT y = (short)HIWORD(pos);
2014
2015 e = EDIT_CharFromPos(es, x,
2016 y + (es->format_rect.bottom - es->format_rect.top),
2017 &after_wrap);
2018 if (!extend)
2019 s = e;
2020 EDIT_EM_SetSel(es, s, e, after_wrap);
2021 EDIT_EM_ScrollCaret(es);
2022 }
2023
2024
2025 /*********************************************************************
2026 *
2027 * EDIT_MovePageUp_ML
2028 *
2029 * Only for multi line controls
2030 * Move the caret one page up, on a column with the nearest
2031 * x coordinate on the screen (might be a different column).
2032 *
2033 */
2034 static void EDIT_MovePageUp_ML(EDITSTATE *es, BOOL extend)
2035 {
2036 INT s = es->selection_start;
2037 INT e = es->selection_end;
2038 BOOL after_wrap = (es->flags & EF_AFTER_WRAP);
2039 LRESULT pos = EDIT_EM_PosFromChar(es, e, after_wrap);
2040 INT x = (short)LOWORD(pos);
2041 INT y = (short)HIWORD(pos);
2042
2043 e = EDIT_CharFromPos(es, x,
2044 y - (es->format_rect.bottom - es->format_rect.top),
2045 &after_wrap);
2046 if (!extend)
2047 s = e;
2048 EDIT_EM_SetSel(es, s, e, after_wrap);
2049 EDIT_EM_ScrollCaret(es);
2050 }
2051
2052
2053 /*********************************************************************
2054 *
2055 * EDIT_MoveUp_ML
2056 *
2057 * Only for multi line controls
2058 * Move the caret one line up, on a column with the nearest
2059 * x coordinate on the screen (might be a different column).
2060 *
2061 */
2062 static void EDIT_MoveUp_ML(EDITSTATE *es, BOOL extend)
2063 {
2064 INT s = es->selection_start;
2065 INT e = es->selection_end;
2066 BOOL after_wrap = (es->flags & EF_AFTER_WRAP);
2067 LRESULT pos = EDIT_EM_PosFromChar(es, e, after_wrap);
2068 INT x = (short)LOWORD(pos);
2069 INT y = (short)HIWORD(pos);
2070
2071 e = EDIT_CharFromPos(es, x, y - es->line_height, &after_wrap);
2072 if (!extend)
2073 s = e;
2074 EDIT_EM_SetSel(es, s, e, after_wrap);
2075 EDIT_EM_ScrollCaret(es);
2076 }
2077
2078
2079 /*********************************************************************
2080 *
2081 * EDIT_MoveWordBackward
2082 *
2083 */
2084 static void EDIT_MoveWordBackward(EDITSTATE *es, BOOL extend)
2085 {
2086 INT s = es->selection_start;
2087 INT e = es->selection_end;
2088 INT l;
2089 INT ll;
2090 INT li;
2091
2092 l = EDIT_EM_LineFromChar(es, e);
2093 ll = EDIT_EM_LineLength(es, e);
2094 li = EDIT_EM_LineIndex(es, l);
2095 if (e - li == 0) {
2096 if (l) {
2097 li = EDIT_EM_LineIndex(es, l - 1);
2098 e = li + EDIT_EM_LineLength(es, li);
2099 }
2100 } else {
2101 e = li + EDIT_CallWordBreakProc(es, li, e - li, ll, WB_LEFT);
2102 }
2103 if (!extend)
2104 s = e;
2105 EDIT_EM_SetSel(es, s, e, FALSE);
2106 EDIT_EM_ScrollCaret(es);
2107 }
2108
2109
2110 /*********************************************************************
2111 *
2112 * EDIT_MoveWordForward
2113 *
2114 */
2115 static void EDIT_MoveWordForward(EDITSTATE *es, BOOL extend)
2116 {
2117 INT s = es->selection_start;
2118 INT e = es->selection_end;
2119 INT l;
2120 INT ll;
2121 INT li;
2122
2123 l = EDIT_EM_LineFromChar(es, e);
2124 ll = EDIT_EM_LineLength(es, e);
2125 li = EDIT_EM_LineIndex(es, l);
2126 if (e - li == ll) {
2127 if ((es->style & ES_MULTILINE) && (l != es->line_count - 1))
2128 e = EDIT_EM_LineIndex(es, l + 1);
2129 } else {
2130 e = li + EDIT_CallWordBreakProc(es,
2131 li, e - li + 1, ll, WB_RIGHT);
2132 }
2133 if (!extend)
2134 s = e;
2135 EDIT_EM_SetSel(es, s, e, FALSE);
2136 EDIT_EM_ScrollCaret(es);
2137 }
2138
2139
2140 /*********************************************************************
2141 *
2142 * EDIT_PaintText
2143 *
2144 */
2145 static INT EDIT_PaintText(EDITSTATE *es, HDC dc, INT x, INT y, INT line, INT col, INT count, BOOL rev)
2146 {
2147 COLORREF BkColor;
2148 COLORREF TextColor;
2149 LOGFONTW underline_font;
2150 HFONT hUnderline = 0;
2151 HFONT old_font = 0;
2152 INT ret;
2153 INT li;
2154 INT BkMode;
2155 SIZE size;
2156
2157 if (!count)
2158 return 0;
2159 BkMode = GetBkMode(dc);
2160 BkColor = GetBkColor(dc);
2161 TextColor = GetTextColor(dc);
2162 if (rev) {
2163 if (es->composition_len == 0)
2164 {
2165 SetBkColor(dc, GetSysColor(COLOR_HIGHLIGHT));
2166 SetTextColor(dc, GetSysColor(COLOR_HIGHLIGHTTEXT));
2167 SetBkMode( dc, OPAQUE);
2168 }
2169 else
2170 {
2171 HFONT current = GetCurrentObject(dc,OBJ_FONT);
2172 GetObjectW(current,sizeof(LOGFONTW),&underline_font);
2173 underline_font.lfUnderline = TRUE;
2174 hUnderline = CreateFontIndirectW(&underline_font);
2175 old_font = SelectObject(dc,hUnderline);
2176 }
2177 }
2178 li = EDIT_EM_LineIndex(es, line);
2179 if (es->style & ES_MULTILINE) {
2180 ret = (INT)LOWORD(TabbedTextOutW(dc, x, y, es->text + li + col, count,
2181 es->tabs_count, es->tabs, es->format_rect.left - es->x_offset));
2182 } else {
2183 TextOutW(dc, x, y, es->text + li + col, count);
2184 GetTextExtentPoint32W(dc, es->text + li + col, count, &size);
2185 ret = size.cx;
2186 }
2187 if (rev) {
2188 if (es->composition_len == 0)
2189 {
2190 SetBkColor(dc, BkColor);
2191 SetTextColor(dc, TextColor);
2192 SetBkMode( dc, BkMode);
2193 }
2194 else
2195 {
2196 if (old_font)
2197 SelectObject(dc,old_font);
2198 if (hUnderline)
2199 DeleteObject(hUnderline);
2200 }
2201 }
2202 return ret;
2203 }
2204
2205
2206 /*********************************************************************
2207 *
2208 * EDIT_PaintLine
2209 *
2210 */
2211 static void EDIT_PaintLine(EDITSTATE *es, HDC dc, INT line, BOOL rev)
2212 {
2213 INT s = 0;
2214 INT e = 0;
2215 INT li = 0;
2216 INT ll = 0;
2217 INT x;
2218 INT y;
2219 LRESULT pos;
2220 SCRIPT_STRING_ANALYSIS ssa;
2221
2222 if (es->style & ES_MULTILINE) {
2223 INT vlc = get_vertical_line_count(es);
2224
2225 if ((line < es->y_offset) || (line > es->y_offset + vlc) || (line >= es->line_count))
2226 return;
2227 } else if (line)
2228 return;
2229
2230 TRACE("line=%d\n", line);
2231
2232 ssa = EDIT_UpdateUniscribeData(es, dc, line);
2233 pos = EDIT_EM_PosFromChar(es, EDIT_EM_LineIndex(es, line), FALSE);
2234 x = (short)LOWORD(pos);
2235 y = (short)HIWORD(pos);
2236
2237 if (es->style & ES_MULTILINE)
2238 {
2239 int line_idx = line;
2240 x = -es->x_offset;
2241 if (es->style & ES_RIGHT || es->style & ES_CENTER)
2242 {
2243 LINEDEF *line_def = es->first_line_def;
2244 int w, lw;
2245
2246 while (line_def && line_idx)
2247 {
2248 line_def = line_def->next;
2249 line_idx--;
2250 }
2251 w = es->format_rect.right - es->format_rect.left;
2252 lw = line_def->width;
2253
2254 if (es->style & ES_RIGHT)
2255 x = w - (lw - x);
2256 else if (es->style & ES_CENTER)
2257 x += (w - lw) / 2;
2258 }
2259 x += es->format_rect.left;
2260 }
2261
2262 if (rev)
2263 {
2264 li = EDIT_EM_LineIndex(es, line);
2265 ll = EDIT_EM_LineLength(es, li);
2266 s = min(es->selection_start, es->selection_end);
2267 e = max(es->selection_start, es->selection_end);
2268 s = min(li + ll, max(li, s));
2269 e = min(li + ll, max(li, e));
2270 }
2271
2272 if (ssa)
2273 ScriptStringOut(ssa, x, y, 0, &es->format_rect, s - li, e - li, FALSE);
2274 else if (rev && (s != e) &&
2275 ((es->flags & EF_FOCUSED) || (es->style & ES_NOHIDESEL))) {
2276 x += EDIT_PaintText(es, dc, x, y, line, 0, s - li, FALSE);
2277 x += EDIT_PaintText(es, dc, x, y, line, s - li, e - s, TRUE);
2278 x += EDIT_PaintText(es, dc, x, y, line, e - li, li + ll - e, FALSE);
2279 } else
2280 x += EDIT_PaintText(es, dc, x, y, line, 0, ll, FALSE);
2281 }
2282
2283
2284 /*********************************************************************
2285 *
2286 * EDIT_AdjustFormatRect
2287 *
2288 * Adjusts the format rectangle for the current font and the
2289 * current client rectangle.
2290 *
2291 */
2292 static void EDIT_AdjustFormatRect(EDITSTATE *es)
2293 {
2294 RECT ClientRect;
2295
2296 es->format_rect.right = max(es->format_rect.right, es->format_rect.left + es->char_width);
2297 if (es->style & ES_MULTILINE)
2298 {
2299 INT fw, vlc, max_x_offset, max_y_offset;
2300
2301 vlc = get_vertical_line_count(es);
2302 es->format_rect.bottom = es->format_rect.top + vlc * es->line_height;
2303
2304 /* correct es->x_offset */
2305 fw = es->format_rect.right - es->format_rect.left;
2306 max_x_offset = es->text_width - fw;
2307 if(max_x_offset < 0) max_x_offset = 0;
2308 if(es->x_offset > max_x_offset)
2309 es->x_offset = max_x_offset;
2310
2311 /* correct es->y_offset */
2312 max_y_offset = es->line_count - vlc;
2313 if(max_y_offset < 0) max_y_offset = 0;
2314 if(es->y_offset > max_y_offset)
2315 es->y_offset = max_y_offset;
2316
2317 /* force scroll info update */
2318 EDIT_UpdateScrollInfo(es);
2319 }
2320 else
2321 /* Windows doesn't care to fix text placement for SL controls */
2322 es->format_rect.bottom = es->format_rect.top + es->line_height;
2323
2324 /* Always stay within the client area */
2325 GetClientRect(es->hwndSelf, &ClientRect);
2326 es->format_rect.bottom = min(es->format_rect.bottom, ClientRect.bottom);
2327
2328 if ((es->style & ES_MULTILINE) && !(es->style & ES_AUTOHSCROLL))
2329 EDIT_BuildLineDefs_ML(es, 0, get_text_length(es), 0, NULL);
2330
2331 EDIT_SetCaretPos(es, es->selection_end, es->flags & EF_AFTER_WRAP);
2332 }
2333
2334
2335 /*********************************************************************
2336 *
2337 * EDIT_SetRectNP
2338 *
2339 * note: this is not (exactly) the handler called on EM_SETRECTNP
2340 * it is also used to set the rect of a single line control
2341 *
2342 */
2343 static void EDIT_SetRectNP(EDITSTATE *es, const RECT *rc)
2344 {
2345 LONG_PTR ExStyle;
2346 INT bw, bh;
2347 ExStyle = GetWindowLongPtrW(es->hwndSelf, GWL_EXSTYLE);
2348
2349 CopyRect(&es->format_rect, rc);
2350
2351 if (ExStyle & WS_EX_CLIENTEDGE) {
2352 es->format_rect.left++;
2353 es->format_rect.right--;
2354
2355 if (es->format_rect.bottom - es->format_rect.top
2356 >= es->line_height + 2)
2357 {
2358 es->format_rect.top++;
2359 es->format_rect.bottom--;
2360 }
2361 }
2362 else if (es->style & WS_BORDER) {
2363 bw = GetSystemMetrics(SM_CXBORDER) + 1;
2364 bh = GetSystemMetrics(SM_CYBORDER) + 1;
2365 InflateRect(&es->format_rect, -bw, 0);
2366 if (es->format_rect.bottom - es->format_rect.top >= es->line_height + 2 * bh)
2367 InflateRect(&es->format_rect, 0, -bh);
2368 }
2369
2370 es->format_rect.left += es->left_margin;
2371 es->format_rect.right -= es->right_margin;
2372 EDIT_AdjustFormatRect(es);
2373 }
2374
2375
2376 /*********************************************************************
2377 *
2378 * EM_CHARFROMPOS
2379 *
2380 * returns line number (not index) in high-order word of result.
2381 * NB : Q137805 is unclear about this. POINT * pointer in lParam apply
2382 * to Richedit, not to the edit control. Original documentation is valid.
2383 * FIXME: do the specs mean to return -1 if outside client area or
2384 * if outside formatting rectangle ???
2385 *
2386 */
2387 static LRESULT EDIT_EM_CharFromPos(EDITSTATE *es, INT x, INT y)
2388 {
2389 POINT pt;
2390 RECT rc;
2391 INT index;
2392
2393 pt.x = x;
2394 pt.y = y;
2395 GetClientRect(es->hwndSelf, &rc);
2396 if (!PtInRect(&rc, pt))
2397 return -1;
2398
2399 index = EDIT_CharFromPos(es, x, y, NULL);
2400 return MAKELONG(index, EDIT_EM_LineFromChar(es, index));
2401 }
2402
2403
2404 /*********************************************************************
2405 *
2406 * EM_FMTLINES
2407 *
2408 * Enable or disable soft breaks.
2409 *
2410 * This means: insert or remove the soft linebreak character (\r\r\n).
2411 * Take care to check if the text still fits the buffer after insertion.
2412 * If not, notify with EN_ERRSPACE.
2413 *
2414 */
2415 static BOOL EDIT_EM_FmtLines(EDITSTATE *es, BOOL add_eol)
2416 {
2417 es->flags &= ~EF_USE_SOFTBRK;
2418 if (add_eol) {
2419 es->flags |= EF_USE_SOFTBRK;
2420 FIXME("soft break enabled, not implemented\n");
2421 }
2422 return add_eol;
2423 }
2424
2425
2426 /*********************************************************************
2427 *
2428 * EM_GETHANDLE
2429 *
2430 * Hopefully this won't fire back at us.
2431 * We always start with a fixed buffer in the local heap.
2432 * Despite of the documentation says that the local heap is used
2433 * only if DS_LOCALEDIT flag is set, NT and 2000 always allocate
2434 * buffer on the local heap.
2435 *
2436 */
2437 static HLOCAL EDIT_EM_GetHandle(EDITSTATE *es)
2438 {
2439 HLOCAL hLocal;
2440
2441 if (!(es->style & ES_MULTILINE))
2442 return 0;
2443
2444 if(es->is_unicode)
2445 hLocal = es->hloc32W;
2446 else
2447 {
2448 if(!es->hloc32A)
2449 {
2450 CHAR *textA;
2451 UINT countA, alloc_size;
2452 TRACE("Allocating 32-bit ANSI alias buffer\n");
2453 countA = WideCharToMultiByte(CP_ACP, 0, es->text, -1, NULL, 0, NULL, NULL);
2454 alloc_size = ROUND_TO_GROW(countA);
2455 if(!(es->hloc32A = LocalAlloc(LMEM_MOVEABLE | LMEM_ZEROINIT, alloc_size)))
2456 {
2457 ERR("Could not allocate %d bytes for 32-bit ANSI alias buffer\n", alloc_size);
2458 return 0;
2459 }
2460 textA = LocalLock(es->hloc32A);
2461 WideCharToMultiByte(CP_ACP, 0, es->text, -1, textA, countA, NULL, NULL);
2462 LocalUnlock(es->hloc32A);
2463 }
2464 hLocal = es->hloc32A;
2465 }
2466
2467 EDIT_UnlockBuffer(es, TRUE);
2468
2469 /* The text buffer handle belongs to the app */
2470 es->hlocapp = hLocal;
2471
2472 TRACE("Returning %p, LocalSize() = %ld\n", hLocal, LocalSize(hLocal));
2473 return hLocal;
2474 }
2475
2476
2477 /*********************************************************************
2478 *
2479 * EM_GETLINE
2480 *
2481 */
2482 static INT EDIT_EM_GetLine(EDITSTATE *es, INT line, LPWSTR dst, BOOL unicode)
2483 {
2484 LPWSTR src;
2485 INT line_len, dst_len;
2486 INT i;
2487
2488 if (es->style & ES_MULTILINE) {
2489 if (line >= es->line_count)
2490 return 0;
2491 } else
2492 line = 0;
2493 i = EDIT_EM_LineIndex(es, line);
2494 src = es->text + i;
2495 line_len = EDIT_EM_LineLength(es, i);
2496 dst_len = *(WORD *)dst;
2497 if(unicode)
2498 {
2499 if(dst_len <= line_len)
2500 {
2501 memcpy(dst, src, dst_len * sizeof(WCHAR));
2502 return dst_len;
2503 }
2504 else /* Append 0 if enough space */
2505 {
2506 memcpy(dst, src, line_len * sizeof(WCHAR));
2507 dst[line_len] = 0;
2508 return line_len;
2509 }
2510 }
2511 else
2512 {
2513 INT ret = WideCharToMultiByte(CP_ACP, 0, src, line_len, (LPSTR)dst, dst_len, NULL, NULL);
2514 if(!ret && line_len) /* Insufficient buffer size */
2515 return dst_len;
2516 if(ret < dst_len) /* Append 0 if enough space */
2517 ((LPSTR)dst)[ret] = 0;
2518 return ret;
2519 }
2520 }
2521
2522
2523 /*********************************************************************
2524 *
2525 * EM_GETSEL
2526 *
2527 */
2528 static LRESULT EDIT_EM_GetSel(const EDITSTATE *es, PUINT start, PUINT end)
2529 {
2530 UINT s = es->selection_start;
2531 UINT e = es->selection_end;
2532
2533 ORDER_UINT(s, e);
2534 if (start)
2535 *start = s;
2536 if (end)
2537 *end = e;
2538 return MAKELONG(s, e);
2539 }
2540
2541
2542 /*********************************************************************
2543 *
2544 * EM_REPLACESEL
2545 *
2546 * FIXME: handle ES_NUMBER and ES_OEMCONVERT here
2547 *
2548 */
2549 static void EDIT_EM_ReplaceSel(EDITSTATE *es, BOOL can_undo, const WCHAR *lpsz_replace, UINT strl,
2550 BOOL send_update, BOOL honor_limit)
2551 {
2552 UINT tl = get_text_length(es);
2553 UINT utl;
2554 UINT s;
2555 UINT e;
2556 UINT i;
2557 UINT size;
2558 LPWSTR p;
2559 HRGN hrgn = 0;
2560 LPWSTR buf = NULL;
2561 UINT bufl;
2562
2563 TRACE("%s, can_undo %d, send_update %d\n",
2564 debugstr_wn(lpsz_replace, strl), can_undo, send_update);
2565
2566 s = es->selection_start;
2567 e = es->selection_end;
2568
2569 EDIT_InvalidateUniscribeData(es);
2570 if ((s == e) && !strl)
2571 return;
2572
2573 ORDER_UINT(s, e);
2574
2575 size = tl - (e - s) + strl;
2576 if (!size)
2577 es->text_width = 0;
2578
2579 /* Issue the EN_MAXTEXT notification and continue with replacing text
2580 * so that buffer limit is honored. */
2581 if ((honor_limit) && (size > es->buffer_limit)) {
2582 EDIT_NOTIFY_PARENT(es, EN_MAXTEXT);
2583 /* Buffer limit can be smaller than the actual length of text in combobox */
2584 if (es->buffer_limit < (tl - (e-s)))
2585 strl = 0;
2586 else
2587 strl = min(strl, es->buffer_limit - (tl - (e-s)));
2588 }
2589
2590 if (!EDIT_MakeFit(es, tl - (e - s) + strl))
2591 return;
2592
2593 if (e != s) {
2594 /* there is something to be deleted */
2595 TRACE("deleting stuff.\n");
2596 bufl = e - s;
2597 buf = HeapAlloc(GetProcessHeap(), 0, (bufl + 1) * sizeof(WCHAR));
2598 if (!buf) return;
2599 memcpy(buf, es->text + s, bufl * sizeof(WCHAR));
2600 buf[bufl] = 0; /* ensure 0 termination */
2601 /* now delete */
2602 strcpyW(es->text + s, es->text + e);
2603 text_buffer_changed(es);
2604 }
2605 if (strl) {
2606 /* there is an insertion */
2607 tl = get_text_length(es);
2608 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));
2609 for (p = es->text + tl ; p >= es->text + s ; p--)
2610 p[strl] = p[0];
2611 for (i = 0 , p = es->text + s ; i < strl ; i++)
2612 p[i] = lpsz_replace[i];
2613 if(es->style & ES_UPPERCASE)
2614 CharUpperBuffW(p, strl);
2615 else if(es->style & ES_LOWERCASE)
2616 CharLowerBuffW(p, strl);
2617 text_buffer_changed(es);
2618 }
2619 if (es->style & ES_MULTILINE)
2620 {
2621 INT st = min(es->selection_start, es->selection_end);
2622 INT vlc = get_vertical_line_count(es);
2623
2624 hrgn = CreateRectRgn(0, 0, 0, 0);
2625 EDIT_BuildLineDefs_ML(es, st, st + strl,
2626 strl - abs(es->selection_end - es->selection_start), hrgn);
2627 /* if text is too long undo all changes */
2628 if (honor_limit && !(es->style & ES_AUTOVSCROLL) && (es->line_count > vlc)) {
2629 if (strl)
2630 strcpyW(es->text + e, es->text + e + strl);
2631 if (e != s)
2632 for (i = 0 , p = es->text ; i < e - s ; i++)
2633 p[i + s] = buf[i];
2634 text_buffer_changed(es);
2635 EDIT_BuildLineDefs_ML(es, s, e,
2636 abs(es->selection_end - es->selection_start) - strl, hrgn);
2637 strl = 0;
2638 e = s;
2639 hrgn = CreateRectRgn(0, 0, 0, 0);
2640 EDIT_NOTIFY_PARENT(es, EN_MAXTEXT);
2641 }
2642 }
2643 else {
2644 INT fw = es->format_rect.right - es->format_rect.left;
2645 EDIT_InvalidateUniscribeData(es);
2646 EDIT_CalcLineWidth_SL(es);
2647 /* remove chars that don't fit */
2648 if (honor_limit && !(es->style & ES_AUTOHSCROLL) && (es->text_width > fw)) {
2649 while ((es->text_width > fw) && s + strl >= s) {
2650 strcpyW(es->text + s + strl - 1, es->text + s + strl);
2651 strl--;
2652 es->text_length = -1;
2653 EDIT_InvalidateUniscribeData(es);
2654 EDIT_CalcLineWidth_SL(es);
2655 }
2656 text_buffer_changed(es);
2657 EDIT_NOTIFY_PARENT(es, EN_MAXTEXT);
2658 }
2659 }
2660
2661 if (e != s) {
2662 if (can_undo) {
2663 utl = strlenW(es->undo_text);
2664 if (!es->undo_insert_count && (*es->undo_text && (s == es->undo_position))) {
2665 /* undo-buffer is extended to the right */
2666 EDIT_MakeUndoFit(es, utl + e - s);
2667 memcpy(es->undo_text + utl, buf, (e - s)*sizeof(WCHAR));
2668 (es->undo_text + utl)[e - s] = 0; /* ensure 0 termination */
2669 } else if (!es->undo_insert_count && (*es->undo_text && (e == es->undo_position))) {
2670 /* undo-buffer is extended to the left */
2671 EDIT_MakeUndoFit(es, utl + e - s);
2672 for (p = es->undo_text + utl ; p >= es->undo_text ; p--)
2673 p[e - s] = p[0];
2674 for (i = 0 , p = es->undo_text ; i < e - s ; i++)
2675 p[i] = buf[i];
2676 es->undo_position = s;
2677 } else {
2678 /* new undo-buffer */
2679 EDIT_MakeUndoFit(es, e - s);
2680 memcpy(es->undo_text, buf, (e - s)*sizeof(WCHAR));
2681 es->undo_text[e - s] = 0; /* ensure 0 termination */
2682 es->undo_position = s;
2683 }
2684 /* any deletion makes the old insertion-undo invalid */
2685 es->undo_insert_count = 0;
2686 } else
2687 EDIT_EM_EmptyUndoBuffer(es);
2688 }
2689 if (strl) {
2690 if (can_undo) {
2691 if ((s == es->undo_position) ||
2692 ((es->undo_insert_count) &&
2693 (s == es->undo_position + es->undo_insert_count)))
2694 /*
2695 * insertion is new and at delete position or
2696 * an extension to either left or right
2697 */
2698 es->undo_insert_count += strl;
2699 else {
2700 /* new insertion undo */
2701 es->undo_position = s;
2702 es->undo_insert_count = strl;
2703 /* new insertion makes old delete-buffer invalid */
2704 *es->undo_text = '\0';
2705 }
2706 } else
2707 EDIT_EM_EmptyUndoBuffer(es);
2708 }
2709
2710 HeapFree(GetProcessHeap(), 0, buf);
2711
2712 s += strl;
2713
2714 /* If text has been deleted and we're right or center aligned then scroll rightward */
2715 if (es->style & (ES_RIGHT | ES_CENTER))
2716 {
2717 INT delta = strl - abs(es->selection_end - es->selection_start);
2718
2719 if (delta < 0 && es->x_offset)
2720 {
2721 if (abs(delta) > es->x_offset)
2722 es->x_offset = 0;
2723 else
2724 es->x_offset += delta;
2725 }
2726 }
2727
2728 EDIT_EM_SetSel(es, s, s, FALSE);
2729 es->flags |= EF_MODIFIED;
2730 if (send_update) es->flags |= EF_UPDATE;
2731 if (hrgn)
2732 {
2733 EDIT_UpdateTextRegion(es, hrgn, TRUE);
2734 DeleteObject(hrgn);
2735 }
2736 else
2737 EDIT_UpdateText(es, NULL, TRUE);
2738
2739 EDIT_EM_ScrollCaret(es);
2740
2741 /* force scroll info update */
2742 EDIT_UpdateScrollInfo(es);
2743
2744
2745 if(send_update || (es->flags & EF_UPDATE))
2746 {
2747 es->flags &= ~EF_UPDATE;
2748 EDIT_NOTIFY_PARENT(es, EN_CHANGE);
2749 }
2750 EDIT_InvalidateUniscribeData(es);
2751 }
2752
2753
2754 /*********************************************************************
2755 *
2756 * EM_SETHANDLE
2757 *
2758 * FIXME: ES_LOWERCASE, ES_UPPERCASE, ES_OEMCONVERT, ES_NUMBER ???
2759 *
2760 */
2761 static void EDIT_EM_SetHandle(EDITSTATE *es, HLOCAL hloc)
2762 {
2763 if (!(es->style & ES_MULTILINE))
2764 return;
2765
2766 if (!hloc) {
2767 WARN("called with NULL handle\n");
2768 return;
2769 }
2770
2771 EDIT_UnlockBuffer(es, TRUE);
2772
2773 if(es->is_unicode)
2774 {
2775 if(es->hloc32A)
2776 {
2777 LocalFree(es->hloc32A);
2778 es->hloc32A = NULL;
2779 }
2780 es->hloc32W = hloc;
2781 }
2782 else
2783 {
2784 INT countW, countA;
2785 HLOCAL hloc32W_new;
2786 WCHAR *textW;
2787 CHAR *textA;
2788
2789 countA = LocalSize(hloc);
2790 textA = LocalLock(hloc);
2791 countW = MultiByteToWideChar(CP_ACP, 0, textA, countA, NULL, 0);
2792 if(!(hloc32W_new = LocalAlloc(LMEM_MOVEABLE | LMEM_ZEROINIT, countW * sizeof(WCHAR))))
2793 {
2794 ERR("Could not allocate new unicode buffer\n");
2795 return;
2796 }
2797 textW = LocalLock(hloc32W_new);
2798 MultiByteToWideChar(CP_ACP, 0, textA, countA, textW, countW);
2799 LocalUnlock(hloc32W_new);
2800 LocalUnlock(hloc);
2801
2802 if(es->hloc32W)
2803 LocalFree(es->hloc32W);
2804
2805 es->hloc32W = hloc32W_new;
2806 es->hloc32A = hloc;
2807 }
2808
2809 es->buffer_size = LocalSize(es->hloc32W)/sizeof(WCHAR) - 1;
2810
2811 /* The text buffer handle belongs to the control */
2812 es->hlocapp = NULL;
2813
2814 EDIT_LockBuffer(es);
2815 text_buffer_changed(es);
2816
2817 es->x_offset = es->y_offset = 0;
2818 es->selection_start = es->selection_end = 0;
2819 EDIT_EM_EmptyUndoBuffer(es);
2820 es->flags &= ~EF_MODIFIED;
2821 es->flags &= ~EF_UPDATE;
2822 EDIT_BuildLineDefs_ML(es, 0, get_text_length(es), 0, NULL);
2823 EDIT_UpdateText(es, NULL, TRUE);
2824 EDIT_EM_ScrollCaret(es);
2825 /* force scroll info update */
2826 EDIT_UpdateScrollInfo(es);
2827 }
2828
2829
2830 /*********************************************************************
2831 *
2832 * EM_SETLIMITTEXT
2833 *
2834 * NOTE: this version currently implements WinNT limits
2835 *
2836 */
2837 static void EDIT_EM_SetLimitText(EDITSTATE *es, UINT limit)
2838 {
2839 if (!limit) limit = ~0u;
2840 if (!(es->style & ES_MULTILINE)) limit = min(limit, 0x7ffffffe);
2841 es->buffer_limit = limit;
2842 }
2843
2844
2845 /*********************************************************************
2846 *
2847 * EM_SETMARGINS
2848 *
2849 * EC_USEFONTINFO is used as a left or right value i.e. lParam and not as an
2850 * action wParam despite what the docs say. EC_USEFONTINFO calculates the
2851 * margin according to the textmetrics of the current font.
2852 *
2853 * When EC_USEFONTINFO is used in the non_cjk case the margins only
2854 * change if the edit control is equal to or larger than a certain
2855 * size. Though there is an exception for the empty client rect case
2856 * with small font sizes.
2857 */
2858 static BOOL is_cjk(UINT charset)
2859 {
2860 switch(charset)
2861 {
2862 case SHIFTJIS_CHARSET:
2863 case HANGUL_CHARSET:
2864 case GB2312_CHARSET:
2865 case CHINESEBIG5_CHARSET:
2866 return TRUE;
2867 }
2868 /* HANGUL_CHARSET is strange, though treated as CJK by Win 8, it is
2869 * not by other versions including Win 10. */
2870 return FALSE;
2871 }
2872
2873 static void EDIT_EM_SetMargins(EDITSTATE *es, INT action,
2874 WORD left, WORD right, BOOL repaint)
2875 {
2876 TEXTMETRICW tm;
2877 INT default_left_margin = 0; /* in pixels */
2878 INT default_right_margin = 0; /* in pixels */
2879
2880 /* Set the default margins depending on the font */
2881 if (es->font && (left == EC_USEFONTINFO || right == EC_USEFONTINFO)) {
2882 HDC dc = GetDC(es->hwndSelf);
2883 HFONT old_font = SelectObject(dc, es->font);
2884 LONG width = GdiGetCharDimensions(dc, &tm, NULL);
2885 RECT rc;
2886
2887 /* The default margins are only non zero for TrueType or Vector fonts */
2888 if (tm.tmPitchAndFamily & ( TMPF_VECTOR | TMPF_TRUETYPE )) {
2889 if (!is_cjk(tm.tmCharSet)) {
2890 default_left_margin = width / 2;
2891 default_right_margin = width / 2;
2892
2893 GetClientRect(es->hwndSelf, &rc);
2894 if (rc.right - rc.left < (width / 2 + width) * 2 &&
2895 (width >= 28 || !IsRectEmpty(&rc)) ) {
2896 default_left_margin = es->left_margin;
2897 default_right_margin = es->right_margin;
2898 }
2899 } else {
2900 /* FIXME: figure out the CJK values. They are not affected by the client rect. */
2901 default_left_margin = width / 2;
2902 default_right_margin = width / 2;
2903 }
2904 }
2905 SelectObject(dc, old_font);
2906 ReleaseDC(es->hwndSelf, dc);
2907 }
2908
2909 if (action & EC_LEFTMARGIN) {
2910 es->format_rect.left -= es->left_margin;
2911 if (left != EC_USEFONTINFO)
2912 es->left_margin = left;
2913 else
2914 es->left_margin = default_left_margin;
2915 es->format_rect.left += es->left_margin;
2916 }
2917
2918 if (action & EC_RIGHTMARGIN) {
2919 es->format_rect.right += es->right_margin;
2920 if (right != EC_USEFONTINFO)
2921 es->right_margin = right;
2922 else
2923 es->right_margin = default_right_margin;
2924 es->format_rect.right -= es->right_margin;
2925 }
2926
2927 if (action & (EC_LEFTMARGIN | EC_RIGHTMARGIN)) {
2928 EDIT_AdjustFormatRect(es);
2929 if (repaint) EDIT_UpdateText(es, NULL, TRUE);
2930 }
2931
2932 TRACE("left=%d, right=%d\n", es->left_margin, es->right_margin);
2933 }
2934
2935
2936 /*********************************************************************
2937 *
2938 * EM_SETPASSWORDCHAR
2939 *
2940 */
2941 static void EDIT_EM_SetPasswordChar(EDITSTATE *es, WCHAR c)
2942 {
2943 LONG style;
2944
2945 if (es->style & ES_MULTILINE)
2946 return;
2947
2948 if (es->password_char == c)
2949 return;
2950
2951 style = GetWindowLongW( es->hwndSelf, GWL_STYLE );
2952 es->password_char = c;
2953 if (c) {
2954 SetWindowLongW( es->hwndSelf, GWL_STYLE, style | ES_PASSWORD );
2955 es->style |= ES_PASSWORD;
2956 } else {
2957 SetWindowLongW( es->hwndSelf, GWL_STYLE, style & ~ES_PASSWORD );
2958 es->style &= ~ES_PASSWORD;
2959 }
2960 EDIT_InvalidateUniscribeData(es);
2961 EDIT_UpdateText(es, NULL, TRUE);
2962 }
2963
2964
2965 /*********************************************************************
2966 *
2967 * EM_SETTABSTOPS
2968 *
2969 */
2970 static BOOL EDIT_EM_SetTabStops(EDITSTATE *es, INT count, const INT *tabs)
2971 {
2972 if (!(es->style & ES_MULTILINE))
2973 return FALSE;
2974 HeapFree(GetProcessHeap(), 0, es->tabs);
2975 es->tabs_count = count;
2976 if (!count)
2977 es->tabs = NULL;
2978 else {
2979 es->tabs = HeapAlloc(GetProcessHeap(), 0, count * sizeof(INT));
2980 memcpy(es->tabs, tabs, count * sizeof(INT));
2981 }
2982 EDIT_InvalidateUniscribeData(es);
2983 return TRUE;
2984 }
2985
2986
2987 /*********************************************************************
2988 *
2989 * EM_SETWORDBREAKPROC
2990 *
2991 */
2992 static void EDIT_EM_SetWordBreakProc(EDITSTATE *es, void *wbp)
2993 {
2994 if (es->word_break_proc == wbp)
2995 return;
2996
2997 es->word_break_proc = wbp;
2998
2999 if ((es->style & ES_MULTILINE) && !(es->style & ES_AUTOHSCROLL)) {
3000 EDIT_BuildLineDefs_ML(es, 0, get_text_length(es), 0, NULL);
3001 EDIT_UpdateText(es, NULL, TRUE);
3002 }
3003 }
3004
3005
3006 /*********************************************************************
3007 *
3008 * EM_UNDO / WM_UNDO
3009 *
3010 */
3011 static BOOL EDIT_EM_Undo(EDITSTATE *es)
3012 {
3013 INT ulength;
3014 LPWSTR utext;
3015
3016 /* As per MSDN spec, for a single-line edit control,
3017 the return value is always TRUE */
3018 if( es->style & ES_READONLY )
3019 return !(es->style & ES_MULTILINE);
3020
3021 ulength = strlenW(es->undo_text);
3022
3023 utext = HeapAlloc(GetProcessHeap(), 0, (ulength + 1) * sizeof(WCHAR));
3024
3025 strcpyW(utext, es->undo_text);
3026
3027 TRACE("before UNDO:insertion length = %d, deletion buffer = %s\n",
3028 es->undo_insert_count, debugstr_w(utext));
3029
3030 EDIT_EM_SetSel(es, es->undo_position, es->undo_position + es->undo_insert_count, FALSE);
3031 EDIT_EM_EmptyUndoBuffer(es);
3032 EDIT_EM_ReplaceSel(es, TRUE, utext, ulength, TRUE, TRUE);
3033 EDIT_EM_SetSel(es, es->undo_position, es->undo_position + es->undo_insert_count, FALSE);
3034 /* send the notification after the selection start and end are set */
3035 EDIT_NOTIFY_PARENT(es, EN_CHANGE);
3036 EDIT_EM_ScrollCaret(es);
3037 HeapFree(GetProcessHeap(), 0, utext);
3038
3039 TRACE("after UNDO:insertion length = %d, deletion buffer = %s\n",
3040 es->undo_insert_count, debugstr_w(es->undo_text));
3041 return TRUE;
3042 }
3043
3044
3045 /* Helper function for WM_CHAR
3046 *
3047 * According to an MSDN blog article titled "Just because you're a control
3048 * doesn't mean that you're necessarily inside a dialog box," multiline edit
3049 * controls without ES_WANTRETURN would attempt to detect whether it is inside
3050 * a dialog box or not.
3051 */
3052 static inline BOOL EDIT_IsInsideDialog(EDITSTATE *es)
3053 {
3054 return (es->flags & EF_DIALOGMODE);
3055 }
3056
3057
3058 /*********************************************************************
3059 *
3060 * WM_PASTE
3061 *
3062 */
3063 static void EDIT_WM_Paste(EDITSTATE *es)
3064 {
3065 HGLOBAL hsrc;
3066 LPWSTR src, ptr;
3067 int len;
3068
3069 /* Protect read-only edit control from modification */
3070 if(es->style & ES_READONLY)
3071 return;
3072
3073 OpenClipboard(es->hwndSelf);
3074 if ((hsrc = GetClipboardData(CF_UNICODETEXT))) {
3075 src = GlobalLock(hsrc);
3076 len = strlenW(src);
3077 /* Protect single-line edit against pasting new line character */
3078 if (!(es->style & ES_MULTILINE) && ((ptr = strchrW(src, '\n')))) {
3079 len = ptr - src;
3080 if (len && src[len - 1] == '\r')
3081 --len;
3082 }
3083 EDIT_EM_ReplaceSel(es, TRUE, src, len, TRUE, TRUE);
3084 GlobalUnlock(hsrc);
3085 }
3086 else if (es->style & ES_PASSWORD) {
3087 /* clear selected text in password edit box even with empty clipboard */
3088 EDIT_EM_ReplaceSel(es, TRUE, NULL, 0, TRUE, TRUE);
3089 }
3090 CloseClipboard();
3091 }
3092
3093
3094 /*********************************************************************
3095 *
3096 * WM_COPY
3097 *
3098 */
3099 static void EDIT_WM_Copy(EDITSTATE *es)
3100 {
3101 INT s = min(es->selection_start, es->selection_end);
3102 INT e = max(es->selection_start, es->selection_end);
3103 HGLOBAL hdst;
3104 LPWSTR dst;
3105 DWORD len;
3106
3107 if (e == s) return;
3108
3109 len = e - s;
3110 hdst = GlobalAlloc(GMEM_MOVEABLE | GMEM_DDESHARE, (len + 1) * sizeof(WCHAR));
3111 dst = GlobalLock(hdst);
3112 memcpy(dst, es->text + s, len * sizeof(WCHAR));
3113 dst[len] = 0; /* ensure 0 termination */
3114 TRACE("%s\n", debugstr_w(dst));
3115 GlobalUnlock(hdst);
3116 OpenClipboard(es->hwndSelf);
3117 EmptyClipboard();
3118 SetClipboardData(CF_UNICODETEXT, hdst);
3119 CloseClipboard();
3120 }
3121
3122
3123 /*********************************************************************
3124 *
3125 * WM_CLEAR
3126 *
3127 */
3128 static inline void EDIT_WM_Clear(EDITSTATE *es)
3129 {
3130 /* Protect read-only edit control from modification */
3131 if(es->style & ES_READONLY)
3132 return;
3133
3134 EDIT_EM_ReplaceSel(es, TRUE, NULL, 0, TRUE, TRUE);
3135 }
3136
3137
3138 /*********************************************************************
3139 *
3140 * WM_CUT
3141 *
3142 */
3143 static inline void EDIT_WM_Cut(EDITSTATE *es)
3144 {
3145 EDIT_WM_Copy(es);
3146 EDIT_WM_Clear(es);
3147 }
3148
3149
3150 /*********************************************************************
3151 *
3152 * WM_CHAR
3153 *
3154 */
3155 static LRESULT EDIT_WM_Char(EDITSTATE *es, WCHAR c)
3156 {
3157 BOOL control;
3158
3159 control = GetKeyState(VK_CONTROL) & 0x8000;
3160
3161 switch (c) {
3162 case '\r':
3163 /* If it's not a multiline edit box, it would be ignored below.
3164 * For multiline edit without ES_WANTRETURN, we have to make a
3165 * special case.
3166 */
3167 if ((es->style & ES_MULTILINE) && !(es->style & ES_WANTRETURN))
3168 if (EDIT_IsInsideDialog(es))
3169 break;
3170 case '\n':
3171 if (es->style & ES_MULTILINE) {
3172 if (es->style & ES_READONLY) {
3173 EDIT_MoveHome(es, FALSE, FALSE);
3174 EDIT_MoveDown_ML(es, FALSE);
3175 } else {
3176 static const WCHAR cr_lfW[] = {'\r','\n'};
3177 EDIT_EM_ReplaceSel(es, TRUE, cr_lfW, 2, TRUE, TRUE);
3178 }
3179 }
3180 break;
3181 case '\t':
3182 if ((es->style & ES_MULTILINE) && !(es->style & ES_READONLY))
3183 {
3184 static const WCHAR tabW[] = {'\t'};
3185 if (EDIT_IsInsideDialog(es))
3186 break;
3187 EDIT_EM_ReplaceSel(es, TRUE, tabW, 1, TRUE, TRUE);
3188 }
3189 break;
3190 case VK_BACK:
3191 if (!(es->style & ES_READONLY) && !control) {
3192 if (es->selection_start != es->selection_end)
3193 EDIT_WM_Clear(es);
3194 else {
3195 /* delete character left of caret */
3196 EDIT_EM_SetSel(es, (UINT)-1, 0, FALSE);
3197 EDIT_MoveBackward(es, TRUE);
3198 EDIT_WM_Clear(es);
3199 }
3200 }
3201 break;
3202 case 0x03: /* ^C */
3203 if (!(es->style & ES_PASSWORD))
3204 SendMessageW(es->hwndSelf, WM_COPY, 0, 0);
3205 break;
3206 case 0x16: /* ^V */
3207 if (!(es->style & ES_READONLY))
3208 SendMessageW(es->hwndSelf, WM_PASTE, 0, 0);
3209 break;
3210 case 0x18: /* ^X */
3211 if (!((es->style & ES_READONLY) || (es->style & ES_PASSWORD)))
3212 SendMessageW(es->hwndSelf, WM_CUT, 0, 0);
3213 break;
3214 case 0x1A: /* ^Z */
3215 if (!(es->style & ES_READONLY))
3216 SendMessageW(es->hwndSelf, WM_UNDO, 0, 0);
3217 break;
3218
3219 default:
3220 /*If Edit control style is ES_NUMBER allow users to key in only numeric values*/
3221 if( (es->style & ES_NUMBER) && !( c >= '0' && c <= '9') )
3222 break;
3223
3224 if (!(es->style & ES_READONLY) && (c >= ' ') && (c != 127))
3225 EDIT_EM_ReplaceSel(es, TRUE, &c, 1, TRUE, TRUE);
3226 break;
3227 }
3228 return 1;
3229 }
3230
3231
3232 /*********************************************************************
3233 *
3234 * EDIT_ContextMenuCommand
3235 *
3236 */
3237 static void EDIT_ContextMenuCommand(EDITSTATE *es, UINT id)
3238 {
3239 switch (id) {
3240 case EM_UNDO:
3241 SendMessageW(es->hwndSelf, WM_UNDO, 0, 0);
3242 break;
3243 case WM_CUT:
3244 SendMessageW(es->hwndSelf, WM_CUT, 0, 0);
3245 break;
3246 case WM_COPY:
3247 SendMessageW(es->hwndSelf, WM_COPY, 0, 0);
3248 break;
3249 case WM_PASTE:
3250 SendMessageW(es->hwndSelf, WM_PASTE, 0, 0);
3251 break;
3252 case WM_CLEAR:
3253 SendMessageW(es->hwndSelf, WM_CLEAR, 0, 0);
3254 break;
3255 case EM_SETSEL:
3256 SendMessageW(es->hwndSelf, EM_SETSEL, 0, -1);
3257 break;
3258 default:
3259 ERR("unknown menu item, please report\n");
3260 break;
3261 }
3262 }
3263
3264
3265 /*********************************************************************
3266 *
3267 * WM_CONTEXTMENU
3268 *
3269 * Note: the resource files resource/sysres_??.rc cannot define a
3270 * single popup menu. Hence we use a (dummy) menubar
3271 * containing the single popup menu as its first item.
3272 *
3273 * FIXME: the message identifiers have been chosen arbitrarily,
3274 * hence we use MF_BYPOSITION.
3275 * We might as well use the "real" values (anybody knows ?)
3276 * The menu definition is in resources/sysres_??.rc.
3277 * Once these are OK, we better use MF_BYCOMMAND here
3278 * (as we do in EDIT_WM_Command()).
3279 *
3280 */
3281 static void EDIT_WM_ContextMenu(EDITSTATE *es, INT x, INT y)
3282 {
3283 HMENU menu = LoadMenuA(user32_module, "EDITMENU");
3284 HMENU popup = GetSubMenu(menu, 0);
3285 UINT start = es->selection_start;
3286 UINT end = es->selection_end;
3287 UINT cmd;
3288
3289 ORDER_UINT(start, end);
3290
3291 /* undo */
3292 EnableMenuItem(popup, 0, MF_BYPOSITION | (EDIT_EM_CanUndo(es) && !(es->style & ES_READONLY) ? MF_ENABLED : MF_GRAYED));
3293 /* cut */
3294 EnableMenuItem(popup, 2, MF_BYPOSITION | ((end - start) && !(es->style & ES_PASSWORD) && !(es->style & ES_READONLY) ? MF_ENABLED : MF_GRAYED));
3295 /* copy */
3296 EnableMenuItem(popup, 3, MF_BYPOSITION | ((end - start) && !(es->style & ES_PASSWORD) ? MF_ENABLED : MF_GRAYED));
3297 /* paste */
3298 EnableMenuItem(popup, 4, MF_BYPOSITION | (IsClipboardFormatAvailable(CF_UNICODETEXT) && !(es->style & ES_READONLY) ? MF_ENABLED : MF_GRAYED));
3299 /* delete */
3300 EnableMenuItem(popup, 5, MF_BYPOSITION | ((end - start) && !(es->style & ES_READONLY) ? MF_ENABLED : MF_GRAYED));
3301 /* select all */
3302 EnableMenuItem(popup, 7, MF_BYPOSITION | (start || (end != get_text_length(es)) ? MF_ENABLED : MF_GRAYED));
3303
3304 if (x == -1 && y == -1) /* passed via VK_APPS press/release */
3305 {
3306 RECT rc;
3307 /* Windows places the menu at the edit's center in this case */
3308 WIN_GetRectangles( es->hwndSelf, COORDS_SCREEN, NULL, &rc );
3309 x = rc.left + (rc.right - rc.left) / 2;
3310 y = rc.top + (rc.bottom - rc.top) / 2;
3311 }
3312
3313 if (!(es->flags & EF_FOCUSED))
3314 SetFocus(es->hwndSelf);
3315
3316 cmd = TrackPopupMenu(popup, TPM_LEFTALIGN | TPM_RIGHTBUTTON | TPM_RETURNCMD | TPM_NONOTIFY,
3317 x, y, 0, es->hwndSelf, NULL);
3318
3319 if (cmd)
3320 EDIT_ContextMenuCommand(es, cmd);
3321
3322 DestroyMenu(menu);
3323 }
3324
3325
3326 /*********************************************************************
3327 *
3328 * WM_GETTEXT
3329 *
3330 */
3331 static INT EDIT_WM_GetText(const EDITSTATE *es, INT count, LPWSTR dst, BOOL unicode)
3332 {
3333 if(!count) return 0;
3334
3335 if(unicode)
3336 {
3337 lstrcpynW(dst, es->text, count);
3338 return strlenW(dst);
3339 }
3340 else
3341 {
3342 LPSTR textA = (LPSTR)dst;
3343 if (!WideCharToMultiByte(CP_ACP, 0, es->text, -1, textA, count, NULL, NULL))
3344 textA[count - 1] = 0; /* ensure 0 termination */
3345 return strlen(textA);
3346 }
3347 }
3348
3349 /*********************************************************************
3350 *
3351 * EDIT_CheckCombo
3352 *
3353 */
3354 static BOOL EDIT_CheckCombo(EDITSTATE *es, UINT msg, INT key)
3355 {
3356 HWND hLBox = es->hwndListBox;
3357 HWND hCombo;
3358 BOOL bDropped;
3359 int nEUI;
3360
3361 if (!hLBox)
3362 return FALSE;
3363
3364 hCombo = GetParent(es->hwndSelf);
3365 bDropped = TRUE;
3366 nEUI = 0;
3367
3368 TRACE_(combo)("[%p]: handling msg %x (%x)\n", es->hwndSelf, msg, key);
3369
3370 if (key == VK_UP || key == VK_DOWN)
3371 {
3372 if (SendMessageW(hCombo, CB_GETEXTENDEDUI, 0, 0))
3373 nEUI = 1;
3374
3375 if (msg == WM_KEYDOWN || nEUI)
3376 bDropped = (BOOL)SendMessageW(hCombo, CB_GETDROPPEDSTATE, 0, 0);
3377 }
3378
3379 switch (msg)
3380 {
3381 case WM_KEYDOWN:
3382 if (!bDropped && nEUI && (key == VK_UP || key == VK_DOWN))
3383 {
3384 /* make sure ComboLBox pops up */
3385 SendMessageW(hCombo, CB_SETEXTENDEDUI, FALSE, 0);
3386 key = VK_F4;
3387 nEUI = 2;
3388 }
3389
3390 SendMessageW(hLBox, WM_KEYDOWN, key, 0);
3391 break;
3392
3393 case WM_SYSKEYDOWN: /* Handle Alt+up/down arrows */
3394 if (nEUI)
3395 SendMessageW(hCombo, CB_SHOWDROPDOWN, !bDropped, 0);
3396 else
3397 SendMessageW(hLBox, WM_KEYDOWN, VK_F4, 0);
3398 break;
3399 }
3400
3401 if(nEUI == 2)
3402 SendMessageW(hCombo, CB_SETEXTENDEDUI, TRUE, 0);
3403
3404 return TRUE;
3405 }
3406
3407
3408 /*********************************************************************
3409 *
3410 * WM_KEYDOWN
3411 *
3412 * Handling of special keys that don't produce a WM_CHAR
3413 * (i.e. non-printable keys) & Backspace & Delete
3414 *
3415 */
3416 static LRESULT EDIT_WM_KeyDown(EDITSTATE *es, INT key)
3417 {
3418 BOOL shift;
3419 BOOL control;
3420
3421 if (GetKeyState(VK_MENU) & 0x8000)
3422 return 0;
3423
3424 shift = GetKeyState(VK_SHIFT) & 0x8000;
3425 control = GetKeyState(VK_CONTROL) & 0x8000;
3426
3427 switch (key) {
3428 case VK_F4:
3429 case VK_UP:
3430 if (EDIT_CheckCombo(es, WM_KEYDOWN, key) || key == VK_F4)
3431 break;
3432
3433 /* fall through */
3434 case VK_LEFT:
3435 if ((es->style & ES_MULTILINE) && (key == VK_UP))
3436 EDIT_MoveUp_ML(es, shift);
3437 else
3438 if (control)
3439 EDIT_MoveWordBackward(es, shift);
3440 else
3441 EDIT_MoveBackward(es, shift);
3442 break;
3443 case VK_DOWN:
3444 if (EDIT_CheckCombo(es, WM_KEYDOWN, key))
3445 break;
3446 /* fall through */
3447 case VK_RIGHT:
3448 if ((es->style & ES_MULTILINE) && (key == VK_DOWN))
3449 EDIT_MoveDown_ML(es, shift);
3450 else if (control)
3451 EDIT_MoveWordForward(es, shift);
3452 else
3453 EDIT_MoveForward(es, shift);
3454 break;
3455 case VK_HOME:
3456 EDIT_MoveHome(es, shift, control);
3457 break;
3458 case VK_END:
3459 EDIT_MoveEnd(es, shift, control);
3460 break;
3461 case VK_PRIOR:
3462 if (es->style & ES_MULTILINE)
3463 EDIT_MovePageUp_ML(es, shift);
3464 else
3465 EDIT_CheckCombo(es, WM_KEYDOWN, key);
3466 break;
3467 case VK_NEXT:
3468 if (es->style & ES_MULTILINE)
3469 EDIT_MovePageDown_ML(es, shift);
3470 else
3471 EDIT_CheckCombo(es, WM_KEYDOWN, key);
3472 break;
3473 case VK_DELETE:
3474 if (!(es->style & ES_READONLY) && !(shift && control)) {
3475 if (es->selection_start != es->selection_end) {
3476 if (shift)
3477 EDIT_WM_Cut(es);
3478 else
3479 EDIT_WM_Clear(es);
3480 } else {
3481 EDIT_EM_SetSel(es, ~0u, 0, FALSE);
3482 if (shift)
3483 /* delete character left of caret */
3484 EDIT_MoveBackward(es, TRUE);
3485 else if (control)
3486 /* delete to end of line */
3487 EDIT_MoveEnd(es, TRUE, FALSE);
3488 else
3489 /* delete character right of caret */
3490 EDIT_MoveForward(es, TRUE);
3491 EDIT_WM_Clear(es);
3492 }
3493 }
3494 break;
3495 case VK_INSERT:
3496 if (shift) {
3497 if (!(es->style & ES_READONLY))
3498 EDIT_WM_Paste(es);
3499 } else if (control)
3500 EDIT_WM_Copy(es);
3501 break;
3502 case VK_RETURN:
3503 /* If the edit doesn't want the return send a message to the default object */
3504 if(!(es->style & ES_MULTILINE) || !(es->style & ES_WANTRETURN))
3505 {
3506 DWORD dw;
3507
3508 if (!EDIT_IsInsideDialog(es)) break;
3509 if (control) break;
3510 dw = SendMessageW(es->hwndParent, DM_GETDEFID, 0, 0);
3511 if (HIWORD(dw) == DC_HASDEFID)
3512 {
3513 HWND hwDefCtrl = GetDlgItem(es->hwndParent, LOWORD(dw));
3514 if (hwDefCtrl)
3515 {
3516 SendMessageW(es->hwndParent, WM_NEXTDLGCTL, (WPARAM)hwDefCtrl, TRUE);
3517 PostMessageW(hwDefCtrl, WM_KEYDOWN, VK_RETURN, 0);
3518 }
3519 }
3520 }
3521 break;
3522 case VK_ESCAPE:
3523 if ((es->style & ES_MULTILINE) && EDIT_IsInsideDialog(es))
3524 PostMessageW(es->hwndParent, WM_CLOSE, 0, 0);
3525 break;
3526 case VK_TAB:
3527 if ((es->style & ES_MULTILINE) && EDIT_IsInsideDialog(es))
3528 SendMessageW(es->hwndParent, WM_NEXTDLGCTL, shift, 0);
3529 break;
3530 }
3531 return TRUE;
3532 }
3533
3534
3535 /*********************************************************************
3536 *
3537 * WM_KILLFOCUS
3538 *
3539 */
3540 static LRESULT EDIT_WM_KillFocus(EDITSTATE *es)
3541 {
3542 es->flags &= ~EF_FOCUSED;
3543 DestroyCaret();
3544 if(!(es->style & ES_NOHIDESEL))
3545 EDIT_InvalidateText(es, es->selection_start, es->selection_end);
3546 EDIT_NOTIFY_PARENT(es, EN_KILLFOCUS);
3547 /* throw away left over scroll when we lose focus */
3548 es->wheelDeltaRemainder = 0;
3549 return 0;
3550 }
3551
3552
3553 /*********************************************************************
3554 *
3555 * WM_LBUTTONDBLCLK
3556 *
3557 * The caret position has been set on the WM_LBUTTONDOWN message
3558 *
3559 */
3560 static LRESULT EDIT_WM_LButtonDblClk(EDITSTATE *es)
3561 {
3562 INT s;
3563 INT e = es->selection_end;
3564 INT l;
3565 INT li;
3566 INT ll;
3567
3568 es->bCaptureState = TRUE;
3569 SetCapture(es->hwndSelf);
3570
3571 l = EDIT_EM_LineFromChar(es, e);
3572 li = EDIT_EM_LineIndex(es, l);
3573 ll = EDIT_EM_LineLength(es, e);
3574 s = li + EDIT_CallWordBreakProc(es, li, e - li, ll, WB_LEFT);
3575 e = li + EDIT_CallWordBreakProc(es, li, e - li, ll, WB_RIGHT);
3576 EDIT_EM_SetSel(es, s, e, FALSE);
3577 EDIT_EM_ScrollCaret(es);
3578 es->region_posx = es->region_posy = 0;
3579 SetTimer(es->hwndSelf, 0, 100, NULL);
3580 return 0;
3581 }
3582
3583
3584 /*********************************************************************
3585 *
3586 * WM_LBUTTONDOWN
3587 *
3588 */
3589 static LRESULT EDIT_WM_LButtonDown(EDITSTATE *es, DWORD keys, INT x, INT y)
3590 {
3591 INT e;
3592 BOOL after_wrap;
3593
3594 es->bCaptureState = TRUE;
3595 SetCapture(es->hwndSelf);
3596 EDIT_ConfinePoint(es, &x, &y);
3597 e = EDIT_CharFromPos(es, x, y, &after_wrap);
3598 EDIT_EM_SetSel(es, (keys & MK_SHIFT) ? es->selection_start : e, e, after_wrap);
3599 EDIT_EM_ScrollCaret(es);
3600 es->region_posx = es->region_posy = 0;
3601 SetTimer(es->hwndSelf, 0, 100, NULL);
3602
3603 if (!(es->flags & EF_FOCUSED))
3604 SetFocus(es->hwndSelf);
3605
3606 return 0;
3607 }
3608
3609
3610 /*********************************************************************
3611 *
3612 * WM_LBUTTONUP
3613 *
3614 */
3615 static LRESULT EDIT_WM_LButtonUp(EDITSTATE *es)
3616 {
3617 if (es->bCaptureState) {
3618 KillTimer(es->hwndSelf, 0);
3619 if (GetCapture() == es->hwndSelf) ReleaseCapture();
3620 }
3621 es->bCaptureState = FALSE;
3622 return 0;
3623 }
3624
3625
3626 /*********************************************************************
3627 *
3628 * WM_MBUTTONDOWN
3629 *
3630 */
3631 static LRESULT EDIT_WM_MButtonDown(EDITSTATE *es)
3632 {
3633 SendMessageW(es->hwndSelf, WM_PASTE, 0, 0);
3634 return 0;
3635 }
3636
3637
3638 /*********************************************************************
3639 *
3640 * WM_MOUSEMOVE
3641 *
3642 */
3643 static LRESULT EDIT_WM_MouseMove(EDITSTATE *es, INT x, INT y)
3644 {
3645 INT e;
3646 BOOL after_wrap;
3647 INT prex, prey;
3648
3649 /* If the mouse has been captured by process other than the edit control itself,
3650 * the windows edit controls will not select the strings with mouse move.
3651 */
3652 if (!es->bCaptureState || GetCapture() != es->hwndSelf)
3653 return 0;
3654
3655 /*
3656 * FIXME: gotta do some scrolling if outside client
3657 * area. Maybe reset the timer ?
3658 */
3659 prex = x; prey = y;
3660 EDIT_ConfinePoint(es, &x, &y);
3661 es->region_posx = (prex < x) ? -1 : ((prex > x) ? 1 : 0);
3662 es->region_posy = (prey < y) ? -1 : ((prey > y) ? 1 : 0);
3663 e = EDIT_CharFromPos(es, x, y, &after_wrap);
3664 EDIT_EM_SetSel(es, es->selection_start, e, after_wrap);
3665 EDIT_SetCaretPos(es,es->selection_end,es->flags & EF_AFTER_WRAP);
3666 return 0;
3667 }
3668
3669
3670 /*********************************************************************
3671 *
3672 * WM_PAINT
3673 *
3674 */
3675 static void EDIT_WM_Paint(EDITSTATE *es, HDC hdc)
3676 {
3677 PAINTSTRUCT ps;
3678 INT i;
3679 HDC dc;
3680 HFONT old_font = 0;
3681 RECT rc;
3682 RECT rcClient;
3683 RECT rcLine;
3684 RECT rcRgn;
3685 HBRUSH brush;
3686 HBRUSH old_brush;
3687 INT bw, bh;
3688 BOOL rev = es->bEnableState &&
3689 ((es->flags & EF_FOCUSED) ||
3690 (es->style & ES_NOHIDESEL));
3691 dc = hdc ? hdc : BeginPaint(es->hwndSelf, &ps);
3692
3693 /* The dc we use for calculating may not be the one we paint into.
3694 This is the safest action. */
3695 EDIT_InvalidateUniscribeData(es);
3696 GetClientRect(es->hwndSelf, &rcClient);
3697
3698 /* get the background brush */
3699 brush = EDIT_NotifyCtlColor(es, dc);
3700
3701 /* paint the border and the background */
3702 IntersectClipRect(dc, rcClient.left, rcClient.top, rcClient.right, rcClient.bottom);
3703
3704 if(es->style & WS_BORDER) {
3705 bw = GetSystemMetrics(SM_CXBORDER);
3706 bh = GetSystemMetrics(SM_CYBORDER);
3707 rc = rcClient;
3708 if(es->style & ES_MULTILINE) {
3709 if(es->style & WS_HSCROLL) rc.bottom+=bh;
3710 if(es->style & WS_VSCROLL) rc.right+=bw;
3711 }
3712
3713 /* Draw the frame. Same code as in nonclient.c */
3714 old_brush = SelectObject(dc, GetSysColorBrush(COLOR_WINDOWFRAME));
3715 PatBlt(dc, rc.left, rc.top, rc.right - rc.left, bh, PATCOPY);
3716 PatBlt(dc, rc.left, rc.top, bw, rc.bottom - rc.top, PATCOPY);
3717 PatBlt(dc, rc.left, rc.bottom - 1, rc.right - rc.left, -bw, PATCOPY);
3718 PatBlt(dc, rc.right - 1, rc.top, -bw, rc.bottom - rc.top, PATCOPY);
3719 SelectObject(dc, old_brush);
3720
3721 /* Keep the border clean */
3722 IntersectClipRect(dc, rc.left+bw, rc.top+bh,
3723 max(rc.right-bw, rc.left+bw), max(rc.bottom-bh, rc.top+bh));
3724 }
3725
3726 GetClipBox(dc, &rc);
3727 FillRect(dc, &rc, brush);
3728
3729 IntersectClipRect(dc, es->format_rect.left,
3730 es->format_rect.top,
3731 es->format_rect.right,
3732 es->format_rect.bottom);
3733 if (es->style & ES_MULTILINE) {
3734 rc = rcClient;
3735 IntersectClipRect(dc, rc.left, rc.top, rc.right, rc.bottom);
3736 }
3737 if (es->font)
3738 old_font = SelectObject(dc, es->font);
3739
3740 if (!es->bEnableState)
3741 SetTextColor(dc, GetSysColor(COLOR_GRAYTEXT));
3742 GetClipBox(dc, &rcRgn);
3743 if (es->style & ES_MULTILINE) {
3744 INT vlc = get_vertical_line_count(es);
3745 for (i = es->y_offset ; i <= min(es->y_offset + vlc, es->y_offset + es->line_count - 1) ; i++) {
3746 EDIT_UpdateUniscribeData(es, dc, i);
3747 EDIT_GetLineRect(es, i, 0, -1, &rcLine);
3748 if (IntersectRect(&rc, &rcRgn, &rcLine))
3749 EDIT_PaintLine(es, dc, i, rev);
3750 }
3751 } else {
3752 EDIT_UpdateUniscribeData(es, dc, 0);
3753 EDIT_GetLineRect(es, 0, 0, -1, &rcLine);
3754 if (IntersectRect(&rc, &rcRgn, &rcLine))
3755 EDIT_PaintLine(es, dc, 0, rev);
3756 }
3757 if (es->font)
3758 SelectObject(dc, old_font);
3759
3760 if (!hdc)
3761 EndPaint(es->hwndSelf, &ps);
3762 }
3763
3764
3765 /*********************************************************************
3766 *
3767 * WM_SETFOCUS
3768 *
3769 */
3770 static void EDIT_WM_SetFocus(EDITSTATE *es)
3771 {
3772 es->flags |= EF_FOCUSED;
3773
3774 if (!(es->style & ES_NOHIDESEL))
3775 EDIT_InvalidateText(es, es->selection_start, es->selection_end);
3776
3777 /* single line edit updates itself */
3778 if (IsWindowVisible(es->hwndSelf) && !(es->style & ES_MULTILINE))
3779 {
3780 HDC hdc = GetDC(es->hwndSelf);
3781 EDIT_WM_Paint(es, hdc);
3782 ReleaseDC(es->hwndSelf, hdc);
3783 }
3784
3785 CreateCaret(es->hwndSelf, 0, 1, es->line_height);
3786 EDIT_SetCaretPos(es, es->selection_end,
3787 es->flags & EF_AFTER_WRAP);
3788 ShowCaret(es->hwndSelf);
3789 EDIT_NOTIFY_PARENT(es, EN_SETFOCUS);
3790 }
3791
3792
3793 /*********************************************************************
3794 *
3795 * WM_SETFONT
3796 *
3797 * With Win95 look the margins are set to default font value unless
3798 * the system font (font == 0) is being set, in which case they are left
3799 * unchanged.
3800 *
3801 */
3802 static void EDIT_WM_SetFont(EDITSTATE *es, HFONT font, BOOL redraw)
3803 {
3804 TEXTMETRICW tm;
3805 HDC dc;
3806 HFONT old_font = 0;
3807 RECT clientRect;
3808
3809 es->font = font;
3810 EDIT_InvalidateUniscribeData(es);
3811 dc = GetDC(es->hwndSelf);
3812 if (font)
3813 old_font = SelectObject(dc, font);
3814 GetTextMetricsW(dc, &tm);
3815 es->line_height = tm.tmHeight;
3816 es->char_width = tm.tmAveCharWidth;
3817 if (font)
3818 SelectObject(dc, old_font);
3819 ReleaseDC(es->hwndSelf, dc);
3820
3821 /* Reset the format rect and the margins */
3822 GetClientRect(es->hwndSelf, &clientRect);
3823 EDIT_SetRectNP(es, &clientRect);
3824 EDIT_EM_SetMargins(es, EC_LEFTMARGIN | EC_RIGHTMARGIN,
3825 EC_USEFONTINFO, EC_USEFONTINFO, FALSE);
3826
3827 if (es->style & ES_MULTILINE)
3828 EDIT_BuildLineDefs_ML(es, 0, get_text_length(es), 0, NULL);
3829 else
3830 EDIT_CalcLineWidth_SL(es);
3831
3832 if (redraw)
3833 EDIT_UpdateText(es, NULL, TRUE);
3834 if (es->flags & EF_FOCUSED) {
3835 DestroyCaret();
3836 CreateCaret(es->hwndSelf, 0, 1, es->line_height);
3837 EDIT_SetCaretPos(es, es->selection_end,
3838 es->flags & EF_AFTER_WRAP);
3839 ShowCaret(es->hwndSelf);
3840 }
3841 }
3842
3843
3844 /*********************************************************************
3845 *
3846 * WM_SETTEXT
3847 *
3848 * NOTES
3849 * For multiline controls (ES_MULTILINE), reception of WM_SETTEXT triggers:
3850 * The modified flag is reset. No notifications are sent.
3851 *
3852 * For single-line controls, reception of WM_SETTEXT triggers:
3853 * The modified flag is reset. EN_UPDATE and EN_CHANGE notifications are sent.
3854 *
3855 */
3856 static void EDIT_WM_SetText(EDITSTATE *es, LPCWSTR text, BOOL unicode)
3857 {
3858 LPWSTR textW = NULL;
3859 if (!unicode && text)
3860 {
3861 LPCSTR textA = (LPCSTR)text;
3862 INT countW = MultiByteToWideChar(CP_ACP, 0, textA, -1, NULL, 0);
3863 textW = HeapAlloc(GetProcessHeap(), 0, countW * sizeof(WCHAR));
3864 if (textW)
3865 MultiByteToWideChar(CP_ACP, 0, textA, -1, textW, countW);
3866 text = textW;
3867 }
3868
3869 if (es->flags & EF_UPDATE)
3870 /* fixed this bug once; complain if we see it about to happen again. */
3871 ERR("SetSel may generate UPDATE message whose handler may reset "
3872 "selection.\n");
3873
3874 EDIT_EM_SetSel(es, 0, (UINT)-1, FALSE);
3875 if (text)
3876 {
3877 TRACE("%s\n", debugstr_w(text));
3878 EDIT_EM_ReplaceSel(es, FALSE, text, strlenW(text), FALSE, FALSE);
3879 if(!unicode)
3880 HeapFree(GetProcessHeap(), 0, textW);
3881 }
3882 else
3883 {
3884 TRACE("<NULL>\n");
3885 EDIT_EM_ReplaceSel(es, FALSE, NULL, 0, FALSE, FALSE);
3886 }
3887 es->x_offset = 0;
3888 es->flags &= ~EF_MODIFIED;
3889 EDIT_EM_SetSel(es, 0, 0, FALSE);
3890
3891 /* Send the notification after the selection start and end have been set
3892 * edit control doesn't send notification on WM_SETTEXT
3893 * if it is multiline, or it is part of combobox
3894 */
3895 if( !((es->style & ES_MULTILINE) || es->hwndListBox))
3896 {
3897 EDIT_NOTIFY_PARENT(es, EN_UPDATE);
3898 EDIT_NOTIFY_PARENT(es, EN_CHANGE);
3899 }
3900 EDIT_EM_ScrollCaret(es);
3901 EDIT_UpdateScrollInfo(es);
3902 EDIT_InvalidateUniscribeData(es);
3903 }
3904
3905
3906 /*********************************************************************
3907 *
3908 * WM_SIZE
3909 *
3910 */
3911 static void EDIT_WM_Size(EDITSTATE *es, UINT action)
3912 {
3913 if ((action == SIZE_MAXIMIZED) || (action == SIZE_RESTORED)) {
3914 RECT rc;
3915 GetClientRect(es->hwndSelf, &rc);
3916 EDIT_SetRectNP(es, &rc);
3917 EDIT_UpdateText(es, NULL, TRUE);
3918 }
3919 }
3920
3921
3922 /*********************************************************************
3923 *
3924 * WM_STYLECHANGED
3925 *
3926 * This message is sent by SetWindowLong on having changed either the Style
3927 * or the extended style.
3928 *
3929 * We ensure that the window's version of the styles and the EDITSTATE's agree.
3930 *
3931 * See also EDIT_WM_NCCreate
3932 *
3933 * It appears that the Windows version of the edit control allows the style
3934 * (as retrieved by GetWindowLong) to be any value and maintains an internal
3935 * style variable which will generally be different. In this function we
3936 * update the internal style based on what changed in the externally visible
3937 * style.
3938 *
3939 * Much of this content as based upon the MSDN, especially:
3940 * Platform SDK Documentation -> User Interface Services ->
3941 * Windows User Interface -> Edit Controls -> Edit Control Reference ->
3942 * Edit Control Styles
3943 */
3944 static LRESULT EDIT_WM_StyleChanged ( EDITSTATE *es, WPARAM which, const STYLESTRUCT *style)
3945 {
3946 if (GWL_STYLE == which) {
3947 DWORD style_change_mask;
3948 DWORD new_style;
3949 /* Only a subset of changes can be applied after the control
3950 * has been created.
3951 */
3952 style_change_mask = ES_UPPERCASE | ES_LOWERCASE |
3953 ES_NUMBER;
3954 if (es->style & ES_MULTILINE)
3955 style_change_mask |= ES_WANTRETURN;
3956
3957 new_style = style->styleNew & style_change_mask;
3958
3959 /* Number overrides lowercase overrides uppercase (at least it
3960 * does in Win95). However I'll bet that ES_NUMBER would be
3961 * invalid under Win 3.1.
3962 */
3963 if (new_style & ES_NUMBER) {
3964 ; /* do not override the ES_NUMBER */
3965 } else if (new_style & ES_LOWERCASE) {
3966 new_style &= ~ES_UPPERCASE;
3967 }
3968
3969 es->style = (es->style & ~style_change_mask) | new_style;
3970 } else if (GWL_EXSTYLE == which) {
3971 ; /* FIXME - what is needed here */
3972 } else {
3973 WARN ("Invalid style change %ld\n",which);
3974 }
3975
3976 return 0;
3977 }
3978
3979 /*********************************************************************
3980 *
3981 * WM_SYSKEYDOWN
3982 *
3983 */
3984 static LRESULT EDIT_WM_SysKeyDown(EDITSTATE *es, INT key, DWORD key_data)
3985 {
3986 if ((key == VK_BACK) && (key_data & 0x2000)) {
3987 if (EDIT_EM_CanUndo(es))
3988 EDIT_EM_Undo(es);
3989 return 0;
3990 } else if (key == VK_UP || key == VK_DOWN) {
3991 if (EDIT_CheckCombo(es, WM_SYSKEYDOWN, key))
3992 return 0;
3993 }
3994 return DefWindowProcW(es->hwndSelf, WM_SYSKEYDOWN, key, key_data);
3995 }
3996
3997
3998 /*********************************************************************
3999 *
4000 * WM_TIMER
4001 *
4002 */
4003 static void EDIT_WM_Timer(EDITSTATE *es)
4004 {
4005 if (es->region_posx < 0) {
4006 EDIT_MoveBackward(es, TRUE);
4007 } else if (es->region_posx > 0) {
4008 EDIT_MoveForward(es, TRUE);
4009 }
4010 /*
4011 * FIXME: gotta do some vertical scrolling here, like
4012 * EDIT_EM_LineScroll(hwnd, 0, 1);
4013 */
4014 }
4015
4016 /*********************************************************************
4017 *
4018 * WM_HSCROLL
4019 *
4020 */
4021 static LRESULT EDIT_WM_HScroll(EDITSTATE *es, INT action, INT pos)
4022 {
4023 INT dx;
4024 INT fw;
4025
4026 if (!(es->style & ES_MULTILINE))
4027 return 0;
4028
4029 if (!(es->style & ES_AUTOHSCROLL))
4030 return 0;
4031
4032 dx = 0;
4033 fw = es->format_rect.right - es->format_rect.left;
4034 switch (action) {
4035 case SB_LINELEFT:
4036 TRACE("SB_LINELEFT\n");
4037 if (es->x_offset)
4038 dx = -es->char_width;
4039 break;
4040 case SB_LINERIGHT:
4041 TRACE("SB_LINERIGHT\n");
4042 if (es->x_offset < es->text_width)
4043 dx = es->char_width;
4044 break;
4045 case SB_PAGELEFT:
4046 TRACE("SB_PAGELEFT\n");
4047 if (es->x_offset)
4048 dx = -fw / HSCROLL_FRACTION / es->char_width * es->char_width;
4049 break;
4050 case SB_PAGERIGHT:
4051 TRACE("SB_PAGERIGHT\n");
4052 if (es->x_offset < es->text_width)
4053 dx = fw / HSCROLL_FRACTION / es->char_width * es->char_width;
4054 break;
4055 case SB_LEFT:
4056 TRACE("SB_LEFT\n");
4057 if (es->x_offset)
4058 dx = -es->x_offset;
4059 break;
4060 case SB_RIGHT:
4061 TRACE("SB_RIGHT\n");
4062 if (es->x_offset < es->text_width)
4063 dx = es->text_width - es->x_offset;
4064 break;
4065 case SB_THUMBTRACK:
4066 TRACE("SB_THUMBTRACK %d\n", pos);
4067 es->flags |= EF_HSCROLL_TRACK;
4068 if(es->style & WS_HSCROLL)
4069 dx = pos - es->x_offset;
4070 else
4071 {
4072 INT fw, new_x;
4073 /* Sanity check */
4074 if(pos < 0 || pos > 100) return 0;
4075 /* Assume default scroll range 0-100 */
4076 fw = es->format_rect.right - es->format_rect.left;
4077 new_x = pos * (es->text_width - fw) / 100;
4078 dx = es->text_width ? (new_x - es->x_offset) : 0;
4079 }
4080 break;
4081 case SB_THUMBPOSITION:
4082 TRACE("SB_THUMBPOSITION %d\n", pos);
4083 es->flags &= ~EF_HSCROLL_TRACK;
4084 if(GetWindowLongW( es->hwndSelf, GWL_STYLE ) & WS_HSCROLL)
4085 dx = pos - es->x_offset;
4086 else
4087 {
4088 INT fw, new_x;
4089 /* Sanity check */
4090 if(pos < 0 || pos > 100) return 0;
4091 /* Assume default scroll range 0-100 */
4092 fw = es->format_rect.right - es->format_rect.left;
4093 new_x = pos * (es->text_width - fw) / 100;
4094 dx = es->text_width ? (new_x - es->x_offset) : 0;
4095 }
4096 if (!dx) {
4097 /* force scroll info update */
4098 EDIT_UpdateScrollInfo(es);
4099 EDIT_NOTIFY_PARENT(es, EN_HSCROLL);
4100 }
4101 break;
4102 case SB_ENDSCROLL:
4103 TRACE("SB_ENDSCROLL\n");
4104 break;
4105 /*
4106 * FIXME : the next two are undocumented !
4107 * Are we doing the right thing ?
4108 * At least Win 3.1 Notepad makes use of EM_GETTHUMB this way,
4109 * although it's also a regular control message.
4110 */
4111 case EM_GETTHUMB: /* this one is used by NT notepad */
4112 {
4113 LRESULT ret;
4114 if(GetWindowLongW( es->hwndSelf, GWL_STYLE ) & WS_HSCROLL)
4115 ret = GetScrollPos(es->hwndSelf, SB_HORZ);
4116 else
4117 {
4118 /* Assume default scroll range 0-100 */
4119 INT fw = es->format_rect.right - es->format_rect.left;
4120 ret = es->text_width ? es->x_offset * 100 / (es->text_width - fw) : 0;
4121 }
4122 TRACE("EM_GETTHUMB: returning %ld\n", ret);
4123 return ret;
4124 }
4125 case EM_LINESCROLL:
4126 TRACE("EM_LINESCROLL16\n");
4127 dx = pos;
4128 break;
4129
4130 default:
4131 ERR("undocumented WM_HSCROLL action %d (0x%04x), please report\n",
4132 action, action);
4133 return 0;
4134 }
4135 if (dx)
4136 {
4137 INT fw = es->format_rect.right - es->format_rect.left;
4138 /* check if we are going to move too far */
4139 if(es->x_offset + dx + fw > es->text_width)
4140 dx = es->text_width - fw - es->x_offset;
4141 if(dx)
4142 EDIT_EM_LineScroll_internal(es, dx, 0);
4143 }
4144 return 0;
4145 }
4146
4147
4148 /*********************************************************************
4149 *
4150 * WM_VSCROLL
4151 *
4152 */
4153 static LRESULT EDIT_WM_VScroll(EDITSTATE *es, INT action, INT pos)
4154 {
4155 INT dy;
4156
4157 if (!(es->style & ES_MULTILINE))
4158 return 0;
4159
4160 if (!(es->style & ES_AUTOVSCROLL))
4161 return 0;
4162
4163 dy = 0;
4164 switch (action) {
4165 case SB_LINEUP:
4166 case SB_LINEDOWN:
4167 case SB_PAGEUP:
4168 case SB_PAGEDOWN:
4169 TRACE("action %d (%s)\n", action, (action == SB_LINEUP ? "SB_LINEUP" :
4170 (action == SB_LINEDOWN ? "SB_LINEDOWN" :
4171 (action == SB_PAGEUP ? "SB_PAGEUP" :
4172 "SB_PAGEDOWN"))));
4173 EDIT_EM_Scroll(es, action);
4174 return 0;
4175 case SB_TOP:
4176 TRACE("SB_TOP\n");
4177 dy = -es->y_offset;
4178 break;
4179 case SB_BOTTOM:
4180 TRACE("SB_BOTTOM\n");
4181 dy = es->line_count - 1 - es->y_offset;
4182 break;
4183 case SB_THUMBTRACK:
4184 TRACE("SB_THUMBTRACK %d\n", pos);
4185 es->flags |= EF_VSCROLL_TRACK;
4186 if(es->style & WS_VSCROLL)
4187 dy = pos - es->y_offset;
4188 else
4189 {
4190 /* Assume default scroll range 0-100 */
4191 INT vlc, new_y;
4192 /* Sanity check */
4193 if(pos < 0 || pos > 100) return 0;
4194 vlc = get_vertical_line_count(es);
4195 new_y = pos * (es->line_count - vlc) / 100;
4196 dy = es->line_count ? (new_y - es->y_offset) : 0;
4197 TRACE("line_count=%d, y_offset=%d, pos=%d, dy = %d\n",
4198 es->line_count, es->y_offset, pos, dy);
4199 }
4200 break;
4201 case SB_THUMBPOSITION:
4202 TRACE("SB_THUMBPOSITION %d\n", pos);
4203 es->flags &= ~EF_VSCROLL_TRACK;
4204 if(es->style & WS_VSCROLL)
4205 dy = pos - es->y_offset;
4206 else
4207 {
4208 /* Assume default scroll range 0-100 */
4209 INT vlc, new_y;
4210 /* Sanity check */
4211 if(pos < 0 || pos > 100) return 0;
4212 vlc = get_vertical_line_count(es);
4213 new_y = pos * (es->line_count - vlc) / 100;
4214 dy = es->line_count ? (new_y - es->y_offset) : 0;
4215 TRACE("line_count=%d, y_offset=%d, pos=%d, dy = %d\n",
4216 es->line_count, es->y_offset, pos, dy);
4217 }
4218 if (!dy)
4219 {
4220 /* force scroll info update */
4221 EDIT_UpdateScrollInfo(es);
4222 EDIT_NOTIFY_PARENT(es, EN_VSCROLL);
4223 }
4224 break;
4225 case SB_ENDSCROLL:
4226 TRACE("SB_ENDSCROLL\n");
4227 break;
4228 /*
4229 * FIXME : the next two are undocumented !
4230 * Are we doing the right thing ?
4231 * At least Win 3.1 Notepad makes use of EM_GETTHUMB this way,
4232 * although it's also a regular control message.
4233 */
4234 case EM_GETTHUMB: /* this one is used by NT notepad */
4235 {
4236 LRESULT ret;
4237 if(GetWindowLongW( es->hwndSelf, GWL_STYLE ) & WS_VSCROLL)
4238 ret = GetScrollPos(es->hwndSelf, SB_VERT);
4239 else
4240 {
4241 /* Assume default scroll range 0-100 */
4242 INT vlc = get_vertical_line_count(es);
4243 ret = es->line_count ? es->y_offset * 100 / (es->line_count - vlc) : 0;
4244 }
4245 TRACE("EM_GETTHUMB: returning %ld\n", ret);
4246 return ret;
4247 }
4248 case EM_LINESCROLL:
4249 TRACE("EM_LINESCROLL %d\n", pos);
4250 dy = pos;
4251 break;
4252
4253 default:
4254 ERR("undocumented WM_VSCROLL action %d (0x%04x), please report\n",
4255 action, action);
4256 return 0;
4257 }
4258 if (dy)
4259 EDIT_EM_LineScroll(es, 0, dy);
4260 return 0;
4261 }
4262
4263 /*********************************************************************
4264 *
4265 * EM_GETTHUMB
4266 *
4267 * FIXME: is this right ? (or should it be only VSCROLL)
4268 * (and maybe only for edit controls that really have their
4269 * own scrollbars) (and maybe only for multiline controls ?)
4270 * All in all: very poorly documented
4271 *
4272 */
4273 static LRESULT EDIT_EM_GetThumb(EDITSTATE *es)
4274 {
4275 return MAKELONG(EDIT_WM_VScroll(es, EM_GETTHUMB, 0),
4276 EDIT_WM_HScroll(es, EM_GETTHUMB, 0));
4277 }
4278
4279
4280 /********************************************************************
4281 *
4282 * The Following code is to handle inline editing from IMEs
4283 */
4284
4285 static void EDIT_GetCompositionStr(HIMC hIMC, LPARAM CompFlag, EDITSTATE *es)
4286 {
4287 LONG buflen;
4288 LPWSTR lpCompStr;
4289 LPSTR lpCompStrAttr = NULL;
4290 DWORD dwBufLenAttr;
4291
4292 buflen = ImmGetCompositionStringW(hIMC, GCS_COMPSTR, NULL, 0);
4293
4294 if (buflen < 0)
4295 {
4296 return;
4297 }
4298
4299 lpCompStr = HeapAlloc(GetProcessHeap(),0,buflen);
4300 if (!lpCompStr)
4301 {
4302 ERR("Unable to allocate IME CompositionString\n");
4303 return;
4304 }
4305
4306 if (buflen)
4307 ImmGetCompositionStringW(hIMC, GCS_COMPSTR, lpCompStr, buflen);
4308
4309 if (CompFlag & GCS_COMPATTR)
4310 {
4311 /*
4312 * We do not use the attributes yet. it would tell us what characters
4313 * are in transition and which are converted or decided upon
4314 */
4315 dwBufLenAttr = ImmGetCompositionStringW(hIMC, GCS_COMPATTR, NULL, 0);
4316 if (dwBufLenAttr)
4317 {
4318 dwBufLenAttr ++;
4319 lpCompStrAttr = HeapAlloc(GetProcessHeap(),0,dwBufLenAttr+1);
4320 if (!lpCompStrAttr)
4321 {
4322 ERR("Unable to allocate IME Attribute String\n");
4323 HeapFree(GetProcessHeap(),0,lpCompStr);
4324 return;
4325 }
4326 ImmGetCompositionStringW(hIMC,GCS_COMPATTR, lpCompStrAttr,
4327 dwBufLenAttr);
4328 lpCompStrAttr[dwBufLenAttr] = 0;
4329 }
4330 }
4331
4332 /* check for change in composition start */
4333 if (es->selection_end < es->composition_start)
4334 es->composition_start = es->selection_end;
4335
4336 /* replace existing selection string */
4337 es->selection_start = es->composition_start;
4338
4339 if (es->composition_len > 0)
4340 es->selection_end = es->composition_start + es->composition_len;
4341 else
4342 es->selection_end = es->selection_start;
4343
4344 EDIT_EM_ReplaceSel(es, FALSE, lpCompStr, buflen / sizeof(WCHAR), TRUE, TRUE);
4345 es->composition_len = abs(es->composition_start - es->selection_end);
4346
4347 es->selection_start = es->composition_start;
4348 es->selection_end = es->selection_start + es->composition_len;
4349
4350 HeapFree(GetProcessHeap(),0,lpCompStrAttr);
4351 HeapFree(GetProcessHeap(),0,lpCompStr);
4352 }
4353
4354 static void EDIT_GetResultStr(HIMC hIMC, EDITSTATE *es)
4355 {
4356 LONG buflen;
4357 LPWSTR lpResultStr;
4358
4359 buflen = ImmGetCompositionStringW(hIMC, GCS_RESULTSTR, NULL, 0);
4360 if (buflen <= 0)
4361 {
4362 return;
4363 }
4364
4365 lpResultStr = HeapAlloc(GetProcessHeap(),0, buflen);
4366 if (!lpResultStr)
4367 {
4368 ERR("Unable to alloc buffer for IME string\n");
4369 return;
4370 }
4371
4372 ImmGetCompositionStringW(hIMC, GCS_RESULTSTR, lpResultStr, buflen);
4373
4374 /* check for change in composition start */
4375 if (es->selection_end < es->composition_start)
4376 es->composition_start = es->selection_end;
4377
4378 es->selection_start = es->composition_start;
4379 es->selection_end = es->composition_start + es->composition_len;
4380 EDIT_EM_ReplaceSel(es, TRUE, lpResultStr, buflen / sizeof(WCHAR), TRUE, TRUE);
4381 es->composition_start = es->selection_end;
4382 es->composition_len = 0;
4383
4384 HeapFree(GetProcessHeap(),0,lpResultStr);
4385 }
4386
4387 static void EDIT_ImeComposition(HWND hwnd, LPARAM CompFlag, EDITSTATE *es)
4388 {
4389 HIMC hIMC;
4390 int cursor;
4391
4392 if (es->composition_len == 0 && es->selection_start != es->selection_end)
4393 {
4394 EDIT_EM_ReplaceSel(es, TRUE, NULL, 0, TRUE, TRUE);
4395 es->composition_start = es->selection_end;
4396 }
4397
4398 hIMC = ImmGetContext(hwnd);
4399 if (!hIMC)
4400 return;
4401
4402 if (CompFlag & GCS_RESULTSTR)
4403 {
4404 EDIT_GetResultStr(hIMC, es);
4405 cursor = 0;
4406 }
4407 else
4408 {
4409 if (CompFlag & GCS_COMPSTR)
4410 EDIT_GetCompositionStr(hIMC, CompFlag, es);
4411 cursor = ImmGetCompositionStringW(hIMC, GCS_CURSORPOS, 0, 0);
4412 }
4413 ImmReleaseContext(hwnd, hIMC);
4414 EDIT_SetCaretPos(es, es->selection_start + cursor, es->flags & EF_AFTER_WRAP);
4415 }
4416
4417
4418 /*********************************************************************
4419 *
4420 * WM_NCCREATE
4421 *
4422 * See also EDIT_WM_StyleChanged
4423 */
4424 static LRESULT EDIT_WM_NCCreate(HWND hwnd, LPCREATESTRUCTW lpcs, BOOL unicode)
4425 {
4426 EDITSTATE *es;
4427 UINT alloc_size;
4428
4429 TRACE("Creating %s edit control, style = %08x\n",
4430 unicode ? "Unicode" : "ANSI", lpcs->style);
4431
4432 if (!(es = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, sizeof(*es))))
4433 return FALSE;
4434 SetWindowLongPtrW( hwnd, 0, (LONG_PTR)es );
4435
4436 /*
4437 * Note: since the EDITSTATE has not been fully initialized yet,
4438 * we can't use any API calls that may send
4439 * WM_XXX messages before WM_NCCREATE is completed.
4440 */
4441
4442 es->is_unicode = unicode;
4443 es->style = lpcs->style;
4444
4445 es->bEnableState = !(es->style & WS_DISABLED);
4446
4447 es->hwndSelf = hwnd;
4448 /* Save parent, which will be notified by EN_* messages */
4449 es->hwndParent = lpcs->hwndParent;
4450
4451 if (es->style & ES_COMBO)
4452 es->hwndListBox = GetDlgItem(es->hwndParent, ID_CB_LISTBOX);
4453
4454 /* FIXME: should we handle changes to WS_EX_RIGHT style after creation? */
4455 if (lpcs->dwExStyle & WS_EX_RIGHT) es->style |= ES_RIGHT;
4456
4457 /* Number overrides lowercase overrides uppercase (at least it
4458 * does in Win95). However I'll bet that ES_NUMBER would be
4459 * invalid under Win 3.1.
4460 */
4461 if (es->style & ES_NUMBER) {
4462 ; /* do not override the ES_NUMBER */
4463 } else if (es->style & ES_LOWERCASE) {
4464 es->style &= ~ES_UPPERCASE;
4465 }
4466 if (es->style & ES_MULTILINE) {
4467 es->buffer_limit = BUFLIMIT_INITIAL;
4468 if (es->style & WS_VSCROLL)
4469 es->style |= ES_AUTOVSCROLL;
4470 if (es->style & WS_HSCROLL)
4471 es->style |= ES_AUTOHSCROLL;
4472 es->style &= ~ES_PASSWORD;
4473 if ((es->style & ES_CENTER) || (es->style & ES_RIGHT)) {
4474 /* Confirmed - RIGHT overrides CENTER */
4475 if (es->style & ES_RIGHT)
4476 es->style &= ~ES_CENTER;
4477 es->style &= ~WS_HSCROLL;
4478 es->style &= ~ES_AUTOHSCROLL;
4479 }
4480 } else {
4481 es->buffer_limit = BUFLIMIT_INITIAL;
4482 if ((es->style & ES_RIGHT) && (es->style & ES_CENTER))
4483 es->style &= ~ES_CENTER;
4484 es->style &= ~WS_HSCROLL;
4485 es->style &= ~WS_VSCROLL;
4486 if (es->style & ES_PASSWORD)
4487 es->password_char = '*';
4488 }
4489
4490 alloc_size = ROUND_TO_GROW((es->buffer_size + 1) * sizeof(WCHAR));
4491 if(!(es->hloc32W = LocalAlloc(LMEM_MOVEABLE | LMEM_ZEROINIT, alloc_size)))
4492 goto cleanup;
4493 es->buffer_size = LocalSize(es->hloc32W)/sizeof(WCHAR) - 1;
4494
4495 if (!(es->undo_text = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, (es->buffer_size + 1) * sizeof(WCHAR))))
4496 goto cleanup;
4497 es->undo_buffer_size = es->buffer_size;
4498
4499 if (es->style & ES_MULTILINE)
4500 if (!(es->first_line_def = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, sizeof(LINEDEF))))
4501 goto cleanup;
4502 es->line_count = 1;
4503
4504 /*
4505 * In Win95 look and feel, the WS_BORDER style is replaced by the
4506 * WS_EX_CLIENTEDGE style for the edit control. This gives the edit
4507 * control a nonclient area so we don't need to draw the border.
4508 * If WS_BORDER without WS_EX_CLIENTEDGE is specified we shouldn't have
4509 * a nonclient area and we should handle painting the border ourselves.
4510 *
4511 * When making modifications please ensure that the code still works
4512 * for edit controls created directly with style 0x50800000, exStyle 0
4513 * (which should have a single pixel border)
4514 */
4515 if (lpcs->dwExStyle & WS_EX_CLIENTEDGE)
4516 es->style &= ~WS_BORDER;
4517 else if (es->style & WS_BORDER)
4518 SetWindowLongW(hwnd, GWL_STYLE, es->style & ~WS_BORDER);
4519
4520 return TRUE;
4521
4522 cleanup:
4523 SetWindowLongPtrW(es->hwndSelf, 0, 0);
4524 EDIT_InvalidateUniscribeData(es);
4525 HeapFree(GetProcessHeap(), 0, es->first_line_def);
4526 HeapFree(GetProcessHeap(), 0, es->undo_text);
4527 if (es->hloc32W) LocalFree(es->hloc32W);
4528 HeapFree(GetProcessHeap(), 0, es->logAttr);
4529 HeapFree(GetProcessHeap(), 0, es);
4530 return FALSE;
4531 }
4532
4533
4534 /*********************************************************************
4535 *
4536 * WM_CREATE
4537 *
4538 */
4539 static LRESULT EDIT_WM_Create(EDITSTATE *es, LPCWSTR name)
4540 {
4541 RECT clientRect;
4542
4543 TRACE("%s\n", debugstr_w(name));
4544 /*
4545 * To initialize some final structure members, we call some helper
4546 * functions. However, since the EDITSTATE is not consistent (i.e.
4547 * not fully initialized), we should be very careful which
4548 * functions can be called, and in what order.
4549 */
4550 EDIT_WM_SetFont(es, 0, FALSE);
4551 EDIT_EM_EmptyUndoBuffer(es);
4552
4553 /* We need to calculate the format rect
4554 (applications may send EM_SETMARGINS before the control gets visible) */
4555 GetClientRect(es->hwndSelf, &clientRect);
4556 EDIT_SetRectNP(es, &clientRect);
4557
4558 if (name && *name) {
4559 EDIT_EM_ReplaceSel(es, FALSE, name, strlenW(name), FALSE, FALSE);
4560 /* if we insert text to the editline, the text scrolls out
4561 * of the window, as the caret is placed after the insert
4562 * pos normally; thus we reset es->selection... to 0 and
4563 * update caret
4564 */
4565 es->selection_start = es->selection_end = 0;
4566 /* Adobe Photoshop does NOT like this. and MSDN says that EN_CHANGE
4567 * Messages are only to be sent when the USER does something to
4568 * change the contents. So I am removing this EN_CHANGE
4569 *
4570 * EDIT_NOTIFY_PARENT(es, EN_CHANGE);
4571 */
4572 EDIT_EM_ScrollCaret(es);
4573 }
4574 /* force scroll info update */
4575 EDIT_UpdateScrollInfo(es);
4576 /* The rule seems to return 1 here for success */
4577 /* Power Builder masked edit controls will crash */
4578 /* if not. */
4579 /* FIXME: is that in all cases so ? */
4580 return 1;
4581 }
4582
4583
4584 /*********************************************************************
4585 *
4586 * WM_NCDESTROY
4587 *
4588 */
4589 static LRESULT EDIT_WM_NCDestroy(EDITSTATE *es)
4590 {
4591 LINEDEF *pc, *pp;
4592
4593 /* The app can own the text buffer handle */
4594 if (es->hloc32W && (es->hloc32W != es->hlocapp)) {
4595 LocalFree(es->hloc32W);
4596 }
4597 if (es->hloc32A && (es->hloc32A != es->hlocapp)) {
4598 LocalFree(es->hloc32A);
4599 }
4600 EDIT_InvalidateUniscribeData(es);
4601 pc = es->first_line_def;
4602 while (pc)
4603 {
4604 pp = pc->next;
4605 HeapFree(GetProcessHeap(), 0, pc);
4606 pc = pp;
4607 }
4608
4609 SetWindowLongPtrW( es->hwndSelf, 0, 0 );
4610 HeapFree(GetProcessHeap(), 0, es->undo_text);
4611 HeapFree(GetProcessHeap(), 0, es);
4612
4613 return 0;
4614 }
4615
4616
4617 static inline LRESULT DefWindowProcT(HWND hwnd, UINT msg, WPARAM wParam, LPARAM lParam, BOOL unicode)
4618 {
4619 if(unicode)
4620 return DefWindowProcW(hwnd, msg, wParam, lParam);
4621 else
4622 return DefWindowProcA(hwnd, msg, wParam, lParam);
4623 }
4624
4625 /*********************************************************************
4626 *
4627 * EditWndProc_common
4628 *
4629 * The messages are in the order of the actual integer values
4630 * (which can be found in include/windows.h)
4631 */
4632 LRESULT EditWndProc_common( HWND hwnd, UINT msg, WPARAM wParam, LPARAM lParam, BOOL unicode )
4633 {
4634 EDITSTATE *es = (EDITSTATE *)GetWindowLongPtrW( hwnd, 0 );
4635 LRESULT result = 0;
4636
4637 TRACE("hwnd=%p msg=%x (%s) wparam=%lx lparam=%lx\n", hwnd, msg, SPY_GetMsgName(msg, hwnd), wParam, lParam);
4638
4639 if (!es && msg != WM_NCCREATE)
4640 return DefWindowProcT(hwnd, msg, wParam, lParam, unicode);
4641
4642 if (es && (msg != WM_NCDESTROY)) EDIT_LockBuffer(es);
4643
4644 switch (msg) {
4645 case EM_GETSEL:
4646 result = EDIT_EM_GetSel(es, (PUINT)wParam, (PUINT)lParam);
4647 break;
4648
4649 case EM_SETSEL:
4650 EDIT_EM_SetSel(es, wParam, lParam, FALSE);
4651 EDIT_EM_ScrollCaret(es);
4652 result = 1;
4653 break;
4654
4655 case EM_GETRECT:
4656 if (lParam)
4657 *((LPRECT)lParam) = es->format_rect;
4658 break;
4659
4660 case EM_SETRECT:
4661 if ((es->style & ES_MULTILINE) && lParam) {
4662 EDIT_SetRectNP(es, (LPRECT)lParam);
4663 EDIT_UpdateText(es, NULL, TRUE);
4664 }
4665 break;
4666
4667 case EM_SETRECTNP:
4668 if ((es->style & ES_MULTILINE) && lParam)
4669 EDIT_SetRectNP(es, (LPRECT)lParam);
4670 break;
4671
4672 case EM_SCROLL:
4673 result = EDIT_EM_Scroll(es, (INT)wParam);
4674 break;
4675
4676 case EM_LINESCROLL:
4677 result = (LRESULT)EDIT_EM_LineScroll(es, (INT)wParam, (INT)lParam);
4678 break;
4679
4680 case EM_SCROLLCARET:
4681 EDIT_EM_ScrollCaret(es);
4682 result = 1;
4683 break;
4684
4685 case EM_GETMODIFY:
4686 result = ((es->flags & EF_MODIFIED) != 0);
4687 break;
4688
4689 case EM_SETMODIFY:
4690 if (wParam)
4691 es->flags |= EF_MODIFIED;
4692 else
4693 es->flags &= ~(EF_MODIFIED | EF_UPDATE); /* reset pending updates */
4694 break;
4695
4696 case EM_GETLINECOUNT:
4697 result = (es->style & ES_MULTILINE) ? es->line_count : 1;
4698 break;
4699
4700 case EM_LINEINDEX:
4701 result = (LRESULT)EDIT_EM_LineIndex(es, (INT)wParam);
4702 break;
4703
4704 case EM_SETHANDLE:
4705 EDIT_EM_SetHandle(es, (HLOCAL)wParam);
4706 break;
4707
4708 case EM_GETHANDLE:
4709 result = (LRESULT)EDIT_EM_GetHandle(es);
4710 break;
4711
4712 case EM_GETTHUMB:
4713 result = EDIT_EM_GetThumb(es);
4714 break;
4715
4716 /* these messages missing from specs */
4717 case 0x00bf:
4718 case 0x00c0:
4719 case 0x00c3:
4720 case 0x00ca:
4721 FIXME("undocumented message 0x%x, please report\n", msg);
4722 result = DefWindowProcW(hwnd, msg, wParam, lParam);
4723 break;
4724
4725 case EM_LINELENGTH:
4726 result = (LRESULT)EDIT_EM_LineLength(es, (INT)wParam);
4727 break;
4728
4729 case EM_REPLACESEL:
4730 {
4731 LPWSTR textW;
4732
4733 if(unicode)
4734 textW = (LPWSTR)lParam;
4735 else
4736 {
4737 LPSTR textA = (LPSTR)lParam;
4738 INT countW = MultiByteToWideChar(CP_ACP, 0, textA, -1, NULL, 0);
4739 if (!(textW = HeapAlloc(GetProcessHeap(), 0, countW * sizeof(WCHAR)))) break;
4740 MultiByteToWideChar(CP_ACP, 0, textA, -1, textW, countW);
4741 }
4742
4743 EDIT_EM_ReplaceSel(es, (BOOL)wParam, textW, strlenW(textW), TRUE, TRUE);
4744 result = 1;
4745
4746 if(!unicode)
4747 HeapFree(GetProcessHeap(), 0, textW);
4748 break;
4749 }
4750
4751 case EM_GETLINE:
4752 result = (LRESULT)EDIT_EM_GetLine(es, (INT)wParam, (LPWSTR)lParam, unicode);
4753 break;
4754
4755 case EM_SETLIMITTEXT:
4756 EDIT_EM_SetLimitText(es, wParam);
4757 break;
4758
4759 case EM_CANUNDO:
4760 result = (LRESULT)EDIT_EM_CanUndo(es);
4761 break;
4762
4763 case EM_UNDO:
4764 case WM_UNDO:
4765 result = (LRESULT)EDIT_EM_Undo(es);
4766 break;
4767
4768 case EM_FMTLINES:
4769 result = (LRESULT)EDIT_EM_FmtLines(es, (BOOL)wParam);
4770 break;
4771
4772 case EM_LINEFROMCHAR:
4773 result = (LRESULT)EDIT_EM_LineFromChar(es, (INT)wParam);
4774 break;
4775
4776 case EM_SETTABSTOPS:
4777 result = (LRESULT)EDIT_EM_SetTabStops(es, (INT)wParam, (LPINT)lParam);
4778 break;
4779
4780 case EM_SETPASSWORDCHAR:
4781 {
4782 WCHAR charW = 0;
4783
4784 if(unicode)
4785 charW = (WCHAR)wParam;
4786 else
4787 {
4788 CHAR charA = wParam;
4789 MultiByteToWideChar(CP_ACP, 0, &charA, 1, &charW, 1);
4790 }
4791
4792 EDIT_EM_SetPasswordChar(es, charW);
4793 break;
4794 }
4795
4796 case EM_EMPTYUNDOBUFFER:
4797 EDIT_EM_EmptyUndoBuffer(es);
4798 break;
4799
4800 case EM_GETFIRSTVISIBLELINE:
4801 result = (es->style & ES_MULTILINE) ? es->y_offset : es->x_offset;
4802 break;
4803
4804 case EM_SETREADONLY:
4805 {
4806 DWORD old_style = es->style;
4807
4808 if (wParam) {
4809 SetWindowLongW( hwnd, GWL_STYLE,
4810 GetWindowLongW( hwnd, GWL_STYLE ) | ES_READONLY );
4811 es->style |= ES_READONLY;
4812 } else {
4813 SetWindowLongW( hwnd, GWL_STYLE,
4814 GetWindowLongW( hwnd, GWL_STYLE ) & ~ES_READONLY );
4815 es->style &= ~ES_READONLY;
4816 }
4817
4818 if (old_style ^ es->style)
4819 InvalidateRect(es->hwndSelf, NULL, TRUE);
4820
4821 result = 1;
4822 break;
4823 }
4824
4825 case EM_SETWORDBREAKPROC:
4826 EDIT_EM_SetWordBreakProc(es, (void *)lParam);
4827 result = 1;
4828 break;
4829
4830 case EM_GETWORDBREAKPROC:
4831 result = (LRESULT)es->word_break_proc;
4832 break;
4833
4834 case EM_GETPASSWORDCHAR:
4835 {
4836 if(unicode)
4837 result = es->password_char;
4838 else
4839 {
4840 WCHAR charW = es->password_char;
4841 CHAR charA = 0;
4842 WideCharToMultiByte(CP_ACP, 0, &charW, 1, &charA, 1, NULL, NULL);
4843 result = charA;
4844 }
4845 break;
4846 }
4847
4848 case EM_SETMARGINS:
4849 EDIT_EM_SetMargins(es, (INT)wParam, LOWORD(lParam), HIWORD(lParam), TRUE);
4850 break;
4851
4852 case EM_GETMARGINS:
4853 result = MAKELONG(es->left_margin, es->right_margin);
4854 break;
4855
4856 case EM_GETLIMITTEXT:
4857 result = es->buffer_limit;
4858 break;
4859
4860 case EM_POSFROMCHAR:
4861 if ((INT)wParam >= get_text_length(es)) result = -1;
4862 else result = EDIT_EM_PosFromChar(es, (INT)wParam, FALSE);
4863 break;
4864
4865 case EM_CHARFROMPOS:
4866 result = EDIT_EM_CharFromPos(es, (short)LOWORD(lParam), (short)HIWORD(lParam));
4867 break;
4868
4869 /* End of the EM_ messages which were in numerical order; what order
4870 * are these in? vaguely alphabetical?
4871 */
4872
4873 case WM_NCCREATE:
4874 result = EDIT_WM_NCCreate(hwnd, (LPCREATESTRUCTW)lParam, unicode);
4875 break;
4876
4877 case WM_NCDESTROY:
4878 result = EDIT_WM_NCDestroy(es);
4879 es = NULL;
4880 break;
4881
4882 case WM_GETDLGCODE:
4883 result = DLGC_HASSETSEL | DLGC_WANTCHARS | DLGC_WANTARROWS;
4884
4885 if (es->style & ES_MULTILINE)
4886 result |= DLGC_WANTALLKEYS;
4887
4888 if (lParam)
4889 {
4890 es->flags|=EF_DIALOGMODE;
4891
4892 if (((LPMSG)lParam)->message == WM_KEYDOWN)
4893 {
4894 int vk = (int)((LPMSG)lParam)->wParam;
4895
4896 if (es->hwndListBox)
4897 {
4898 if (vk == VK_RETURN || vk == VK_ESCAPE)
4899 if (SendMessageW(GetParent(hwnd), CB_GETDROPPEDSTATE, 0, 0))
4900 result |= DLGC_WANTMESSAGE;
4901 }
4902 }
4903 }
4904 break;
4905
4906 case WM_IME_CHAR:
4907 if (!unicode)
4908 {
4909 WCHAR charW;
4910 CHAR strng[2];
4911
4912 strng[0] = wParam >> 8;
4913 strng[1] = wParam & 0xff;
4914 if (strng[0]) MultiByteToWideChar(CP_ACP, 0, strng, 2, &charW, 1);
4915 else MultiByteToWideChar(CP_ACP, 0, &strng[1], 1, &charW, 1);
4916 result = EDIT_WM_Char(es, charW);
4917 break;
4918 }
4919 /* fall through */
4920 case WM_CHAR:
4921 {
4922 WCHAR charW;
4923
4924 if(unicode)
4925 charW = wParam;
4926 else
4927 {
4928 CHAR charA = wParam;
4929 MultiByteToWideChar(CP_ACP, 0, &charA, 1, &charW, 1);
4930 }
4931
4932 if (es->hwndListBox)
4933 {
4934 if (charW == VK_RETURN || charW == VK_ESCAPE)
4935 {
4936 if (SendMessageW(GetParent(hwnd), CB_GETDROPPEDSTATE, 0, 0))
4937 SendMessageW(GetParent(hwnd), WM_KEYDOWN, charW, 0);
4938 break;
4939 }
4940 }
4941 result = EDIT_WM_Char(es, charW);
4942 break;
4943 }
4944
4945 case WM_UNICHAR:
4946 if (unicode)
4947 {
4948 if (wParam == UNICODE_NOCHAR) return TRUE;
4949 if (wParam <= 0x000fffff)
4950 {
4951 if(wParam > 0xffff) /* convert to surrogates */
4952 {
4953 wParam -= 0x10000;
4954 EDIT_WM_Char(es, (wParam >> 10) + 0xd800);
4955 EDIT_WM_Char(es, (wParam & 0x03ff) + 0xdc00);
4956 }
4957 else EDIT_WM_Char(es, wParam);
4958 }
4959 return 0;
4960 }
4961 break;
4962
4963 case WM_CLEAR:
4964 EDIT_WM_Clear(es);
4965 break;
4966
4967 case WM_CONTEXTMENU:
4968 EDIT_WM_ContextMenu(es, (short)LOWORD(lParam), (short)HIWORD(lParam));
4969 break;
4970
4971 case WM_COPY:
4972 EDIT_WM_Copy(es);
4973 break;
4974
4975 case WM_CREATE:
4976 if(unicode)
4977 result = EDIT_WM_Create(es, ((LPCREATESTRUCTW)lParam)->lpszName);
4978 else
4979 {
4980 LPCSTR nameA = ((LPCREATESTRUCTA)lParam)->lpszName;
4981 LPWSTR nameW = NULL;
4982 if(nameA)
4983 {
4984 INT countW = MultiByteToWideChar(CP_ACP, 0, nameA, -1, NULL, 0);
4985 if((nameW = HeapAlloc(GetProcessHeap(), 0, countW * sizeof(WCHAR))))
4986 MultiByteToWideChar(CP_ACP, 0, nameA, -1, nameW, countW);
4987 }
4988 result = EDIT_WM_Create(es, nameW);
4989 HeapFree(GetProcessHeap(), 0, nameW);
4990 }
4991 break;
4992
4993 case WM_CUT:
4994 EDIT_WM_Cut(es);
4995 break;
4996
4997 case WM_ENABLE:
4998 es->bEnableState = (BOOL) wParam;
4999 EDIT_UpdateText(es, NULL, TRUE);
5000 break;
5001
5002 case WM_ERASEBKGND:
5003 /* we do the proper erase in EDIT_WM_Paint */
5004 result = 1;
5005 break;
5006
5007 case WM_GETFONT:
5008 result = (LRESULT)es->font;
5009 break;
5010
5011 case WM_GETTEXT:
5012 result = (LRESULT)EDIT_WM_GetText(es, (INT)wParam, (LPWSTR)lParam, unicode);
5013 break;
5014
5015 case WM_GETTEXTLENGTH:
5016 if (unicode) result = get_text_length(es);
5017 else result = WideCharToMultiByte( CP_ACP, 0, es->text, get_text_length(es),
5018 NULL, 0, NULL, NULL );
5019 break;
5020
5021 case WM_HSCROLL:
5022 result = EDIT_WM_HScroll(es, LOWORD(wParam), (short)HIWORD(wParam));
5023 break;
5024
5025 case WM_KEYDOWN:
5026 result = EDIT_WM_KeyDown(es, (INT)wParam);
5027 break;
5028
5029 case WM_KILLFOCUS:
5030 result = EDIT_WM_KillFocus(es);
5031 break;
5032
5033 case WM_LBUTTONDBLCLK:
5034 result = EDIT_WM_LButtonDblClk(es);
5035 break;
5036
5037 case WM_LBUTTONDOWN:
5038 result = EDIT_WM_LButtonDown(es, wParam, (short)LOWORD(lParam), (short)HIWORD(lParam));
5039 break;
5040
5041 case WM_LBUTTONUP:
5042 result = EDIT_WM_LButtonUp(es);
5043 break;
5044
5045 case WM_MBUTTONDOWN:
5046 result = EDIT_WM_MButtonDown(es);
5047 break;
5048
5049 case WM_MOUSEMOVE:
5050 result = EDIT_WM_MouseMove(es, (short)LOWORD(lParam), (short)HIWORD(lParam));
5051 break;
5052
5053 case WM_PRINTCLIENT:
5054 case WM_PAINT:
5055 EDIT_WM_Paint(es, (HDC)wParam);
5056 break;
5057
5058 case WM_PASTE:
5059 EDIT_WM_Paste(es);
5060 break;
5061
5062 case WM_SETFOCUS:
5063 EDIT_WM_SetFocus(es);
5064 break;
5065
5066 case WM_SETFONT:
5067 EDIT_WM_SetFont(es, (HFONT)wParam, LOWORD(lParam) != 0);
5068 break;
5069
5070 case WM_SETREDRAW:
5071 /* FIXME: actually set an internal flag and behave accordingly */
5072 break;
5073
5074 case WM_SETTEXT:
5075 EDIT_WM_SetText(es, (LPCWSTR)lParam, unicode);
5076 result = TRUE;
5077 break;
5078
5079 case WM_SIZE:
5080 EDIT_WM_Size(es, (UINT)wParam);
5081 break;
5082
5083 case WM_STYLECHANGED:
5084 result = EDIT_WM_StyleChanged(es, wParam, (const STYLESTRUCT *)lParam);
5085 break;
5086
5087 case WM_STYLECHANGING:
5088 result = 0; /* See EDIT_WM_StyleChanged */
5089 break;
5090
5091 case WM_SYSKEYDOWN:
5092 result = EDIT_WM_SysKeyDown(es, (INT)wParam, (DWORD)lParam);
5093 break;
5094
5095 case WM_TIMER:
5096 EDIT_WM_Timer(es);
5097 break;
5098
5099 case WM_VSCROLL:
5100 result = EDIT_WM_VScroll(es, LOWORD(wParam), (short)HIWORD(wParam));
5101 break;
5102
5103 case WM_MOUSEWHEEL:
5104 {
5105 int wheelDelta;
5106 UINT pulScrollLines = 3;
5107 SystemParametersInfoW(SPI_GETWHEELSCROLLLINES,0, &pulScrollLines, 0);
5108
5109 if (wParam & (MK_SHIFT | MK_CONTROL)) {
5110 result = DefWindowProcW(hwnd, msg, wParam, lParam);
5111 break;
5112 }
5113 wheelDelta = GET_WHEEL_DELTA_WPARAM(wParam);
5114 /* if scrolling changes direction, ignore left overs */
5115 if ((wheelDelta < 0 && es->wheelDeltaRemainder < 0) ||
5116 (wheelDelta > 0 && es->wheelDeltaRemainder > 0))
5117 es->wheelDeltaRemainder += wheelDelta;
5118 else
5119 es->wheelDeltaRemainder = wheelDelta;
5120 if (es->wheelDeltaRemainder && pulScrollLines)
5121 {
5122 int cLineScroll;
5123 pulScrollLines = (int) min((UINT) es->line_count, pulScrollLines);
5124 cLineScroll = pulScrollLines * (float)es->wheelDeltaRemainder / WHEEL_DELTA;
5125 es->wheelDeltaRemainder -= WHEEL_DELTA * cLineScroll / (int)pulScrollLines;
5126 result = EDIT_EM_LineScroll(es, 0, -cLineScroll);
5127 }
5128 }
5129 break;
5130
5131
5132 /* IME messages to make the edit control IME aware */
5133 case WM_IME_SETCONTEXT:
5134 break;
5135
5136 case WM_IME_STARTCOMPOSITION:
5137 es->composition_start = es->selection_end;
5138 es->composition_len = 0;
5139 break;
5140
5141 case WM_IME_COMPOSITION:
5142 EDIT_ImeComposition(hwnd, lParam, es);
5143 break;
5144
5145 case WM_IME_ENDCOMPOSITION:
5146 if (es->composition_len > 0)
5147 {
5148 EDIT_EM_ReplaceSel(es, TRUE, NULL, 0, TRUE, TRUE);
5149 es->selection_end = es->selection_start;
5150 es->composition_len= 0;
5151 }
5152 break;
5153
5154 case WM_IME_COMPOSITIONFULL:
5155 break;
5156
5157 case WM_IME_SELECT:
5158 break;
5159
5160 case WM_IME_CONTROL:
5161 break;
5162
5163 case WM_IME_REQUEST:
5164 switch (wParam)
5165 {
5166 case IMR_QUERYCHARPOSITION:
5167 {
5168 LRESULT pos;
5169 IMECHARPOSITION *chpos = (IMECHARPOSITION *)lParam;
5170
5171 pos = EDIT_EM_PosFromChar(es, es->selection_start + chpos->dwCharPos, FALSE);
5172 chpos->pt.x = LOWORD(pos);
5173 chpos->pt.y = HIWORD(pos);
5174 chpos->cLineHeight = es->line_height;
5175 chpos->rcDocument = es->format_rect;
5176 MapWindowPoints(hwnd, 0, &chpos->pt, 1);
5177 MapWindowPoints(hwnd, 0, (POINT*)&chpos->rcDocument, 2);
5178 result = 1;
5179 break;
5180 }
5181 }
5182 break;
5183
5184 default:
5185 result = DefWindowProcT(hwnd, msg, wParam, lParam, unicode);
5186 break;
5187 }
5188
5189 if (IsWindow(hwnd) && es && msg != EM_GETHANDLE)
5190 EDIT_UnlockBuffer(es, FALSE);
5191
5192 TRACE("hwnd=%p msg=%x (%s) -- 0x%08lx\n", hwnd, msg, SPY_GetMsgName(msg, hwnd), result);
5193
5194 return result;
5195 }
5196
5197
5198 /*********************************************************************
5199 * edit class descriptor
5200 */
5201 static const WCHAR editW[] = {'E','d','i','t',0};
5202 const struct builtin_class_descr EDIT_builtin_class =
5203 {
5204 editW, /* name */
5205 CS_DBLCLKS | CS_PARENTDC, /* style */
5206 WINPROC_EDIT, /* proc */
5207 #ifdef __i386__
5208 sizeof(EDITSTATE *) + sizeof(WORD), /* extra */
5209 #else
5210 sizeof(EDITSTATE *), /* extra */
5211 #endif
5212 IDC_IBEAM, /* cursor */
5213 0 /* brush */
5214 };
Windows API implementation