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added support for wxTE_NO_VSCROLL (patch 1588605) and documented its behaviour
[wxWidgets.git] / src / richtext / richtextctrl.cpp
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1/////////////////////////////////////////////////////////////////////////////
2// Name: src/richtext/richeditctrl.cpp
3// Purpose: A rich edit control
4// Author: Julian Smart
5// Modified by:
6// Created: 2005-09-30
7// RCS-ID: $Id$
8// Copyright: (c) Julian Smart
9// Licence: wxWindows licence
10/////////////////////////////////////////////////////////////////////////////
11
12// For compilers that support precompilation, includes "wx.h".
13#include "wx/wxprec.h"
14
15#ifdef __BORLANDC__
16 #pragma hdrstop
17#endif
18
19#if wxUSE_RICHTEXT
20
21#include "wx/richtext/richtextctrl.h"
22#include "wx/richtext/richtextstyles.h"
23
24#ifndef WX_PRECOMP
25 #include "wx/wx.h"
26 #include "wx/settings.h"
27#endif
28
29#include "wx/textfile.h"
30#include "wx/ffile.h"
31#include "wx/filename.h"
32#include "wx/dcbuffer.h"
33#include "wx/arrimpl.cpp"
34#include "wx/fontenum.h"
35
36// DLL options compatibility check:
37#include "wx/app.h"
38WX_CHECK_BUILD_OPTIONS("wxRichTextCtrl")
39
40DEFINE_EVENT_TYPE(wxEVT_COMMAND_RICHTEXT_LEFT_CLICK)
41DEFINE_EVENT_TYPE(wxEVT_COMMAND_RICHTEXT_MIDDLE_CLICK)
42DEFINE_EVENT_TYPE(wxEVT_COMMAND_RICHTEXT_RIGHT_CLICK)
43DEFINE_EVENT_TYPE(wxEVT_COMMAND_RICHTEXT_LEFT_DCLICK)
44DEFINE_EVENT_TYPE(wxEVT_COMMAND_RICHTEXT_RETURN)
45DEFINE_EVENT_TYPE(wxEVT_COMMAND_RICHTEXT_CHARACTER)
46DEFINE_EVENT_TYPE(wxEVT_COMMAND_RICHTEXT_DELETE)
47
48DEFINE_EVENT_TYPE(wxEVT_COMMAND_RICHTEXT_STYLESHEET_REPLACING)
49DEFINE_EVENT_TYPE(wxEVT_COMMAND_RICHTEXT_STYLESHEET_REPLACED)
50DEFINE_EVENT_TYPE(wxEVT_COMMAND_RICHTEXT_STYLESHEET_CHANGING)
51DEFINE_EVENT_TYPE(wxEVT_COMMAND_RICHTEXT_STYLESHEET_CHANGED)
52
53DEFINE_EVENT_TYPE(wxEVT_COMMAND_RICHTEXT_CONTENT_INSERTED)
54DEFINE_EVENT_TYPE(wxEVT_COMMAND_RICHTEXT_CONTENT_DELETED)
55DEFINE_EVENT_TYPE(wxEVT_COMMAND_RICHTEXT_STYLE_CHANGED)
56DEFINE_EVENT_TYPE(wxEVT_COMMAND_RICHTEXT_SELECTION_CHANGED)
57
58IMPLEMENT_CLASS( wxRichTextCtrl, wxControl )
59
60IMPLEMENT_CLASS( wxRichTextEvent, wxNotifyEvent )
61
62BEGIN_EVENT_TABLE( wxRichTextCtrl, wxControl )
63 EVT_PAINT(wxRichTextCtrl::OnPaint)
64 EVT_ERASE_BACKGROUND(wxRichTextCtrl::OnEraseBackground)
65 EVT_IDLE(wxRichTextCtrl::OnIdle)
66 EVT_SCROLLWIN(wxRichTextCtrl::OnScroll)
67 EVT_LEFT_DOWN(wxRichTextCtrl::OnLeftClick)
68 EVT_MOTION(wxRichTextCtrl::OnMoveMouse)
69 EVT_LEFT_UP(wxRichTextCtrl::OnLeftUp)
70 EVT_RIGHT_DOWN(wxRichTextCtrl::OnRightClick)
71 EVT_MIDDLE_DOWN(wxRichTextCtrl::OnMiddleClick)
72 EVT_LEFT_DCLICK(wxRichTextCtrl::OnLeftDClick)
73 EVT_CHAR(wxRichTextCtrl::OnChar)
74 EVT_SIZE(wxRichTextCtrl::OnSize)
75 EVT_SET_FOCUS(wxRichTextCtrl::OnSetFocus)
76 EVT_KILL_FOCUS(wxRichTextCtrl::OnKillFocus)
77 EVT_MOUSE_CAPTURE_LOST(wxRichTextCtrl::OnCaptureLost)
78 EVT_CONTEXT_MENU(wxRichTextCtrl::OnContextMenu)
79
80 EVT_MENU(wxID_UNDO, wxRichTextCtrl::OnUndo)
81 EVT_UPDATE_UI(wxID_UNDO, wxRichTextCtrl::OnUpdateUndo)
82
83 EVT_MENU(wxID_REDO, wxRichTextCtrl::OnRedo)
84 EVT_UPDATE_UI(wxID_REDO, wxRichTextCtrl::OnUpdateRedo)
85
86 EVT_MENU(wxID_COPY, wxRichTextCtrl::OnCopy)
87 EVT_UPDATE_UI(wxID_COPY, wxRichTextCtrl::OnUpdateCopy)
88
89 EVT_MENU(wxID_PASTE, wxRichTextCtrl::OnPaste)
90 EVT_UPDATE_UI(wxID_PASTE, wxRichTextCtrl::OnUpdatePaste)
91
92 EVT_MENU(wxID_CUT, wxRichTextCtrl::OnCut)
93 EVT_UPDATE_UI(wxID_CUT, wxRichTextCtrl::OnUpdateCut)
94
95 EVT_MENU(wxID_CLEAR, wxRichTextCtrl::OnClear)
96 EVT_UPDATE_UI(wxID_CLEAR, wxRichTextCtrl::OnUpdateClear)
97
98 EVT_MENU(wxID_SELECTALL, wxRichTextCtrl::OnSelectAll)
99 EVT_UPDATE_UI(wxID_SELECTALL, wxRichTextCtrl::OnUpdateSelectAll)
100END_EVENT_TABLE()
101
102/*!
103 * wxRichTextCtrl
104 */
105
106wxArrayString wxRichTextCtrl::sm_availableFontNames;
107
108wxRichTextCtrl::wxRichTextCtrl()
109 : wxScrollHelper(this)
110{
111 Init();
112}
113
114wxRichTextCtrl::wxRichTextCtrl(wxWindow* parent,
115 wxWindowID id,
116 const wxString& value,
117 const wxPoint& pos,
118 const wxSize& size,
119 long style,
120 const wxValidator& validator,
121 const wxString& name)
122 : wxScrollHelper(this)
123{
124 Init();
125 Create(parent, id, value, pos, size, style, validator, name);
126}
127
128/// Creation
129bool wxRichTextCtrl::Create( wxWindow* parent, wxWindowID id, const wxString& value, const wxPoint& pos, const wxSize& size, long style,
130 const wxValidator& validator, const wxString& name)
131{
132 if (!wxTextCtrlBase::Create(parent, id, pos, size,
133 style|wxFULL_REPAINT_ON_RESIZE,
134 validator, name))
135 return false;
136
137 if (!GetFont().Ok())
138 {
139 SetFont(wxSystemSettings::GetFont(wxSYS_DEFAULT_GUI_FONT));
140 }
141
142 GetBuffer().Reset();
143 GetBuffer().SetRichTextCtrl(this);
144
145 SetCaret(new wxCaret(this, wxRICHTEXT_DEFAULT_CARET_WIDTH, 16));
146 GetCaret()->Show();
147
148 if (style & wxTE_READONLY)
149 SetEditable(false);
150
151 // The base attributes must all have default values
152 wxTextAttrEx attributes;
153 attributes.SetFont(GetFont());
154 attributes.SetTextColour(*wxBLACK);
155 attributes.SetAlignment(wxTEXT_ALIGNMENT_LEFT);
156 attributes.SetLineSpacing(10);
157 attributes.SetParagraphSpacingAfter(10);
158 attributes.SetParagraphSpacingBefore(0);
159 attributes.SetTextEffects(0);
160 attributes.SetTextEffectFlags(wxTEXT_ATTR_EFFECT_STRIKETHROUGH|wxTEXT_ATTR_EFFECT_CAPITALS);
161
162 SetBasicStyle(attributes);
163
164 // The default attributes will be merged with base attributes, so
165 // can be empty to begin with
166 wxTextAttrEx defaultAttributes;
167 SetDefaultStyle(defaultAttributes);
168
169 SetBackgroundColour(*wxWHITE);
170 SetBackgroundStyle(wxBG_STYLE_CUSTOM);
171
172 // Tell the sizers to use the given or best size
173 SetInitialSize(size);
174
175#if wxRICHTEXT_BUFFERED_PAINTING
176 // Create a buffer
177 RecreateBuffer(size);
178#endif
179
180 m_textCursor = wxCursor(wxCURSOR_IBEAM);
181 m_urlCursor = wxCursor(wxCURSOR_HAND);
182
183 SetCursor(m_textCursor);
184
185 if (!value.IsEmpty())
186 SetValue(value);
187
188 GetBuffer().AddEventHandler(this);
189
190 return true;
191}
192
193wxRichTextCtrl::~wxRichTextCtrl()
194{
195 GetBuffer().RemoveEventHandler(this);
196
197 delete m_contextMenu;
198}
199
200/// Member initialisation
201void wxRichTextCtrl::Init()
202{
203 m_freezeCount = 0;
204 m_contextMenu = NULL;
205 m_caret = NULL;
206 m_caretPosition = -1;
207 m_selectionRange.SetRange(-2, -2);
208 m_selectionAnchor = -2;
209 m_editable = true;
210 m_caretAtLineStart = false;
211 m_dragging = false;
212 m_fullLayoutRequired = false;
213 m_fullLayoutTime = 0;
214 m_fullLayoutSavedPosition = 0;
215 m_delayedLayoutThreshold = wxRICHTEXT_DEFAULT_DELAYED_LAYOUT_THRESHOLD;
216 m_caretPositionForDefaultStyle = -2;
217}
218
219/// Call Freeze to prevent refresh
220void wxRichTextCtrl::Freeze()
221{
222 m_freezeCount ++;
223}
224
225/// Call Thaw to refresh
226void wxRichTextCtrl::Thaw()
227{
228 m_freezeCount --;
229
230 if (m_freezeCount == 0)
231 {
232 SetupScrollbars();
233 Refresh(false);
234 }
235}
236
237/// Clear all text
238void wxRichTextCtrl::Clear()
239{
240 m_buffer.ResetAndClearCommands();
241 m_buffer.SetDirty(true);
242 m_caretPosition = -1;
243 m_caretPositionForDefaultStyle = -2;
244 m_caretAtLineStart = false;
245 m_selectionRange.SetRange(-2, -2);
246
247 SetScrollbars(0, 0, 0, 0, 0, 0);
248
249 if (m_freezeCount == 0)
250 {
251 SetupScrollbars();
252 Refresh(false);
253 }
254 SendTextUpdatedEvent();
255}
256
257/// Painting
258void wxRichTextCtrl::OnPaint(wxPaintEvent& WXUNUSED(event))
259{
260 if (GetCaret() && GetCaret()->IsVisible())
261 GetCaret()->Hide();
262
263 {
264#if wxRICHTEXT_BUFFERED_PAINTING
265 wxBufferedPaintDC dc(this, m_bufferBitmap);
266#else
267 wxPaintDC dc(this);
268#endif
269 PrepareDC(dc);
270
271 if (m_freezeCount > 0)
272 return;
273
274 dc.SetFont(GetFont());
275
276 // Paint the background
277 PaintBackground(dc);
278
279 // wxRect drawingArea(GetLogicalPoint(wxPoint(0, 0)), GetClientSize());
280
281 wxRect drawingArea(GetUpdateRegion().GetBox());
282 drawingArea.SetPosition(GetLogicalPoint(drawingArea.GetPosition()));
283
284 wxRect availableSpace(GetClientSize());
285 if (GetBuffer().GetDirty())
286 {
287 GetBuffer().Layout(dc, availableSpace, wxRICHTEXT_FIXED_WIDTH|wxRICHTEXT_VARIABLE_HEIGHT);
288 GetBuffer().SetDirty(false);
289 SetupScrollbars();
290 }
291
292 GetBuffer().Draw(dc, GetBuffer().GetRange(), GetInternalSelectionRange(), drawingArea, 0 /* descent */, 0 /* flags */);
293 }
294
295 if (GetCaret() && !GetCaret()->IsVisible())
296 GetCaret()->Show();
297
298 PositionCaret();
299}
300
301// Empty implementation, to prevent flicker
302void wxRichTextCtrl::OnEraseBackground(wxEraseEvent& WXUNUSED(event))
303{
304}
305
306void wxRichTextCtrl::OnSetFocus(wxFocusEvent& WXUNUSED(event))
307{
308 if (GetCaret())
309 {
310 if (!GetCaret()->IsVisible())
311 GetCaret()->Show();
312 PositionCaret();
313 }
314
315 // if (!IsFrozen())
316 // Refresh(false);
317}
318
319void wxRichTextCtrl::OnKillFocus(wxFocusEvent& WXUNUSED(event))
320{
321 if (GetCaret() && GetCaret()->IsVisible())
322 GetCaret()->Hide();
323
324 // if (!IsFrozen())
325 // Refresh(false);
326}
327
328void wxRichTextCtrl::OnCaptureLost(wxMouseCaptureLostEvent& WXUNUSED(event))
329{
330 m_dragging = false;
331}
332
333/// Left-click
334void wxRichTextCtrl::OnLeftClick(wxMouseEvent& event)
335{
336 SetFocus();
337
338 wxClientDC dc(this);
339 PrepareDC(dc);
340 dc.SetFont(GetFont());
341
342 long position = 0;
343 int hit = GetBuffer().HitTest(dc, event.GetLogicalPosition(dc), position);
344
345 if (hit != wxRICHTEXT_HITTEST_NONE)
346 {
347 m_dragStart = event.GetLogicalPosition(dc);
348 m_dragging = true;
349 CaptureMouse();
350
351 SelectNone();
352
353 bool caretAtLineStart = false;
354
355 if (hit & wxRICHTEXT_HITTEST_BEFORE)
356 {
357 // If we're at the start of a line (but not first in para)
358 // then we should keep the caret showing at the start of the line
359 // by showing the m_caretAtLineStart flag.
360 wxRichTextParagraph* para = GetBuffer().GetParagraphAtPosition(position);
361 wxRichTextLine* line = GetBuffer().GetLineAtPosition(position);
362
363 if (line && para && line->GetAbsoluteRange().GetStart() == position && para->GetRange().GetStart() != position)
364 caretAtLineStart = true;
365 position --;
366 }
367
368 MoveCaret(position, caretAtLineStart);
369 SetDefaultStyleToCursorStyle();
370 }
371
372 event.Skip();
373}
374
375/// Left-up
376void wxRichTextCtrl::OnLeftUp(wxMouseEvent& event)
377{
378 if (m_dragging)
379 {
380 m_dragging = false;
381 if (GetCapture() == this)
382 ReleaseMouse();
383
384 // See if we clicked on a URL
385 wxClientDC dc(this);
386 PrepareDC(dc);
387 dc.SetFont(GetFont());
388
389 long position = 0;
390 wxPoint logicalPt = event.GetLogicalPosition(dc);
391 int hit = GetBuffer().HitTest(dc, logicalPt, position);
392
393 if (hit != wxRICHTEXT_HITTEST_NONE)
394 {
395 wxTextAttrEx attr;
396 if (GetStyle(position, attr))
397 {
398 if (attr.HasFlag(wxTEXT_ATTR_URL))
399 {
400 wxString urlTarget = attr.GetURL();
401 if (!urlTarget.IsEmpty())
402 {
403 wxMouseEvent mouseEvent(event);
404
405 long startPos = 0, endPos = 0;
406 wxRichTextObject* obj = GetBuffer().GetLeafObjectAtPosition(position);
407 if (obj)
408 {
409 startPos = obj->GetRange().GetStart();
410 endPos = obj->GetRange().GetEnd();
411 }
412
413 wxTextUrlEvent urlEvent(GetId(), mouseEvent, startPos, endPos);
414 InitCommandEvent(urlEvent);
415
416 urlEvent.SetString(urlTarget);
417
418 GetEventHandler()->ProcessEvent(urlEvent);
419 }
420 }
421 }
422 }
423 }
424}
425
426/// Left-click
427void wxRichTextCtrl::OnMoveMouse(wxMouseEvent& event)
428{
429 wxClientDC dc(this);
430 PrepareDC(dc);
431 dc.SetFont(GetFont());
432
433 long position = 0;
434 wxPoint logicalPt = event.GetLogicalPosition(dc);
435 int hit = GetBuffer().HitTest(dc, logicalPt, position);
436
437 // See if we need to change the cursor
438
439 {
440 if (hit != wxRICHTEXT_HITTEST_NONE && !(hit & wxRICHTEXT_HITTEST_OUTSIDE))
441 {
442 wxTextAttrEx attr;
443 if (GetStyle(position, attr))
444 {
445 if (attr.HasFlag(wxTEXT_ATTR_URL))
446 {
447 SetCursor(m_urlCursor);
448 }
449 else if (!attr.HasFlag(wxTEXT_ATTR_URL))
450 {
451 SetCursor(m_textCursor);
452 }
453 }
454 }
455 else
456 SetCursor(m_textCursor);
457 }
458
459 if (!event.Dragging())
460 {
461 event.Skip();
462 return;
463 }
464
465 if (m_dragging && hit != wxRICHTEXT_HITTEST_NONE)
466 {
467 // TODO: test closeness
468
469 bool caretAtLineStart = false;
470
471 if (hit & wxRICHTEXT_HITTEST_BEFORE)
472 {
473 // If we're at the start of a line (but not first in para)
474 // then we should keep the caret showing at the start of the line
475 // by showing the m_caretAtLineStart flag.
476 wxRichTextParagraph* para = GetBuffer().GetParagraphAtPosition(position);
477 wxRichTextLine* line = GetBuffer().GetLineAtPosition(position);
478
479 if (line && para && line->GetAbsoluteRange().GetStart() == position && para->GetRange().GetStart() != position)
480 caretAtLineStart = true;
481 position --;
482 }
483
484 if (m_caretPosition != position)
485 {
486 bool extendSel = ExtendSelection(m_caretPosition, position, wxRICHTEXT_SHIFT_DOWN);
487
488 MoveCaret(position, caretAtLineStart);
489 SetDefaultStyleToCursorStyle();
490
491 if (extendSel)
492 Refresh(false);
493 }
494 }
495}
496
497/// Right-click
498void wxRichTextCtrl::OnRightClick(wxMouseEvent& event)
499{
500 SetFocus();
501 event.Skip();
502}
503
504/// Left-double-click
505void wxRichTextCtrl::OnLeftDClick(wxMouseEvent& event)
506{
507 SelectWord(GetCaretPosition()+1);
508 event.Skip();
509}
510
511/// Middle-click
512void wxRichTextCtrl::OnMiddleClick(wxMouseEvent& event)
513{
514 event.Skip();
515}
516
517/// Key press
518void wxRichTextCtrl::OnChar(wxKeyEvent& event)
519{
520 int flags = 0;
521 if (event.CmdDown())
522 flags |= wxRICHTEXT_CTRL_DOWN;
523 if (event.ShiftDown())
524 flags |= wxRICHTEXT_SHIFT_DOWN;
525 if (event.AltDown())
526 flags |= wxRICHTEXT_ALT_DOWN;
527
528 if (event.GetKeyCode() == WXK_LEFT ||
529 event.GetKeyCode() == WXK_RIGHT ||
530 event.GetKeyCode() == WXK_UP ||
531 event.GetKeyCode() == WXK_DOWN ||
532 event.GetKeyCode() == WXK_HOME ||
533 event.GetKeyCode() == WXK_PAGEUP ||
534 event.GetKeyCode() == WXK_PAGEDOWN ||
535 event.GetKeyCode() == WXK_END ||
536
537 event.GetKeyCode() == WXK_NUMPAD_LEFT ||
538 event.GetKeyCode() == WXK_NUMPAD_RIGHT ||
539 event.GetKeyCode() == WXK_NUMPAD_UP ||
540 event.GetKeyCode() == WXK_NUMPAD_DOWN ||
541 event.GetKeyCode() == WXK_NUMPAD_HOME ||
542 event.GetKeyCode() == WXK_NUMPAD_PAGEUP ||
543 event.GetKeyCode() == WXK_NUMPAD_PAGEDOWN ||
544 event.GetKeyCode() == WXK_NUMPAD_END)
545 {
546 KeyboardNavigate(event.GetKeyCode(), flags);
547 return;
548 }
549
550 // all the other keys modify the controls contents which shouldn't be
551 // possible if we're read-only
552 if ( !IsEditable() )
553 {
554 event.Skip();
555 return;
556 }
557
558 if (event.GetKeyCode() == WXK_RETURN)
559 {
560 BeginBatchUndo(_("Insert Text"));
561
562 long newPos = m_caretPosition;
563
564 DeleteSelectedContent(& newPos);
565
566 if (event.ShiftDown())
567 {
568 wxString text;
569 text = wxRichTextLineBreakChar;
570 GetBuffer().InsertTextWithUndo(newPos+1, text, this);
571 }
572 else
573 GetBuffer().InsertNewlineWithUndo(newPos+1, this, wxRICHTEXT_INSERT_WITH_PREVIOUS_PARAGRAPH_STYLE);
574
575 EndBatchUndo();
576 SetDefaultStyleToCursorStyle();
577
578 ScrollIntoView(m_caretPosition, WXK_RIGHT);
579
580 wxRichTextEvent cmdEvent(
581 wxEVT_COMMAND_RICHTEXT_RETURN,
582 GetId());
583 cmdEvent.SetEventObject(this);
584 cmdEvent.SetFlags(flags);
585 cmdEvent.SetPosition(newPos+1);
586
587 if (!GetEventHandler()->ProcessEvent(cmdEvent))
588 {
589 // Generate conventional event
590 wxCommandEvent textEvent(wxEVT_COMMAND_TEXT_ENTER, GetId());
591 InitCommandEvent(textEvent);
592
593 GetEventHandler()->ProcessEvent(textEvent);
594 }
595 Update();
596 }
597 else if (event.GetKeyCode() == WXK_BACK)
598 {
599 BeginBatchUndo(_("Delete Text"));
600
601 // Submit range in character positions, which are greater than caret positions,
602 // so subtract 1 for deleted character and add 1 for conversion to character position.
603 if (m_caretPosition > -1 && !HasSelection())
604 {
605 GetBuffer().DeleteRangeWithUndo(wxRichTextRange(m_caretPosition, m_caretPosition), this);
606 }
607 else
608 DeleteSelectedContent();
609
610 EndBatchUndo();
611
612 if (GetLastPosition() == -1)
613 {
614 GetBuffer().Reset();
615
616 m_caretPosition = -1;
617 PositionCaret();
618 SetDefaultStyleToCursorStyle();
619 }
620
621 ScrollIntoView(m_caretPosition, WXK_LEFT);
622
623 wxRichTextEvent cmdEvent(
624 wxEVT_COMMAND_RICHTEXT_DELETE,
625 GetId());
626 cmdEvent.SetEventObject(this);
627 cmdEvent.SetFlags(flags);
628 cmdEvent.SetPosition(m_caretPosition+1);
629 GetEventHandler()->ProcessEvent(cmdEvent);
630
631 Update();
632 }
633 else if (event.GetKeyCode() == WXK_DELETE)
634 {
635 BeginBatchUndo(_("Delete Text"));
636
637 // Submit range in character positions, which are greater than caret positions,
638 if (m_caretPosition < GetBuffer().GetRange().GetEnd()+1 && !HasSelection())
639 {
640 GetBuffer().DeleteRangeWithUndo(wxRichTextRange(m_caretPosition+1, m_caretPosition+1), this);
641 }
642 else
643 DeleteSelectedContent();
644
645 EndBatchUndo();
646
647 if (GetLastPosition() == -1)
648 {
649 GetBuffer().Reset();
650
651 m_caretPosition = -1;
652 PositionCaret();
653 SetDefaultStyleToCursorStyle();
654 }
655
656 wxRichTextEvent cmdEvent(
657 wxEVT_COMMAND_RICHTEXT_DELETE,
658 GetId());
659 cmdEvent.SetEventObject(this);
660 cmdEvent.SetFlags(flags);
661 cmdEvent.SetPosition(m_caretPosition+1);
662 GetEventHandler()->ProcessEvent(cmdEvent);
663
664 Update();
665 }
666 else
667 {
668 long keycode = event.GetKeyCode();
669 switch ( keycode )
670 {
671 case WXK_ESCAPE:
672 case WXK_DELETE:
673 case WXK_START:
674 case WXK_LBUTTON:
675 case WXK_RBUTTON:
676 case WXK_CANCEL:
677 case WXK_MBUTTON:
678 case WXK_CLEAR:
679 case WXK_SHIFT:
680 case WXK_ALT:
681 case WXK_CONTROL:
682 case WXK_MENU:
683 case WXK_PAUSE:
684 case WXK_CAPITAL:
685 case WXK_END:
686 case WXK_HOME:
687 case WXK_LEFT:
688 case WXK_UP:
689 case WXK_RIGHT:
690 case WXK_DOWN:
691 case WXK_SELECT:
692 case WXK_PRINT:
693 case WXK_EXECUTE:
694 case WXK_SNAPSHOT:
695 case WXK_INSERT:
696 case WXK_HELP:
697 case WXK_NUMPAD0:
698 case WXK_NUMPAD1:
699 case WXK_NUMPAD2:
700 case WXK_NUMPAD3:
701 case WXK_NUMPAD4:
702 case WXK_NUMPAD5:
703 case WXK_NUMPAD6:
704 case WXK_NUMPAD7:
705 case WXK_NUMPAD8:
706 case WXK_NUMPAD9:
707 case WXK_MULTIPLY:
708 case WXK_ADD:
709 case WXK_SEPARATOR:
710 case WXK_SUBTRACT:
711 case WXK_DECIMAL:
712 case WXK_DIVIDE:
713 case WXK_F1:
714 case WXK_F2:
715 case WXK_F3:
716 case WXK_F4:
717 case WXK_F5:
718 case WXK_F6:
719 case WXK_F7:
720 case WXK_F8:
721 case WXK_F9:
722 case WXK_F10:
723 case WXK_F11:
724 case WXK_F12:
725 case WXK_F13:
726 case WXK_F14:
727 case WXK_F15:
728 case WXK_F16:
729 case WXK_F17:
730 case WXK_F18:
731 case WXK_F19:
732 case WXK_F20:
733 case WXK_F21:
734 case WXK_F22:
735 case WXK_F23:
736 case WXK_F24:
737 case WXK_NUMLOCK:
738 case WXK_SCROLL:
739 case WXK_PAGEUP:
740 case WXK_PAGEDOWN:
741 case WXK_NUMPAD_SPACE:
742 case WXK_NUMPAD_TAB:
743 case WXK_NUMPAD_ENTER:
744 case WXK_NUMPAD_F1:
745 case WXK_NUMPAD_F2:
746 case WXK_NUMPAD_F3:
747 case WXK_NUMPAD_F4:
748 case WXK_NUMPAD_HOME:
749 case WXK_NUMPAD_LEFT:
750 case WXK_NUMPAD_UP:
751 case WXK_NUMPAD_RIGHT:
752 case WXK_NUMPAD_DOWN:
753 case WXK_NUMPAD_PAGEUP:
754 case WXK_NUMPAD_PAGEDOWN:
755 case WXK_NUMPAD_END:
756 case WXK_NUMPAD_BEGIN:
757 case WXK_NUMPAD_INSERT:
758 case WXK_NUMPAD_DELETE:
759 case WXK_NUMPAD_EQUAL:
760 case WXK_NUMPAD_MULTIPLY:
761 case WXK_NUMPAD_ADD:
762 case WXK_NUMPAD_SEPARATOR:
763 case WXK_NUMPAD_SUBTRACT:
764 case WXK_NUMPAD_DECIMAL:
765 case WXK_WINDOWS_LEFT:
766 {
767 event.Skip();
768 return;
769 }
770
771 default:
772 {
773 if (event.CmdDown() || event.AltDown())
774 {
775 event.Skip();
776 return;
777 }
778
779 wxRichTextEvent cmdEvent(
780 wxEVT_COMMAND_RICHTEXT_CHARACTER,
781 GetId());
782 cmdEvent.SetEventObject(this);
783 cmdEvent.SetFlags(flags);
784 cmdEvent.SetCharacter((wxChar) keycode);
785 cmdEvent.SetPosition(m_caretPosition+1);
786
787 if (keycode == wxT('\t'))
788 {
789 // See if we need to promote or demote the selection or paragraph at the cursor
790 // position, instead of inserting a tab.
791 long pos = GetAdjustedCaretPosition(GetCaretPosition());
792 wxRichTextParagraph* para = GetBuffer().GetParagraphAtPosition(pos);
793 if (para && para->GetRange().GetStart() == pos && para->GetAttributes().HasListStyleName())
794 {
795 wxRichTextRange range;
796 if (HasSelection())
797 range = GetSelectionRange();
798 else
799 range = para->GetRange().FromInternal();
800
801 int promoteBy = event.ShiftDown() ? 1 : -1;
802
803 PromoteList(promoteBy, range, NULL);
804
805 GetEventHandler()->ProcessEvent(cmdEvent);
806
807 return;
808 }
809 }
810
811 BeginBatchUndo(_("Insert Text"));
812
813 long newPos = m_caretPosition;
814 DeleteSelectedContent(& newPos);
815
816 wxString str = (wxChar) event.GetKeyCode();
817 GetBuffer().InsertTextWithUndo(newPos+1, str, this, 0);
818
819 EndBatchUndo();
820
821 SetDefaultStyleToCursorStyle();
822 ScrollIntoView(m_caretPosition, WXK_RIGHT);
823
824 GetEventHandler()->ProcessEvent(cmdEvent);
825
826 Update();
827 }
828 }
829 }
830}
831
832/// Delete content if there is a selection, e.g. when pressing a key.
833bool wxRichTextCtrl::DeleteSelectedContent(long* newPos)
834{
835 if (HasSelection())
836 {
837 long pos = m_selectionRange.GetStart();
838 GetBuffer().DeleteRangeWithUndo(m_selectionRange, this);
839 m_selectionRange.SetRange(-2, -2);
840
841 if (newPos)
842 *newPos = pos-1;
843 return true;
844 }
845 else
846 return false;
847}
848
849/// Keyboard navigation
850
851/*
852
853Left: left one character
854Right: right one character
855Up: up one line
856Down: down one line
857Ctrl-Left: left one word
858Ctrl-Right: right one word
859Ctrl-Up: previous paragraph start
860Ctrl-Down: next start of paragraph
861Home: start of line
862End: end of line
863Ctrl-Home: start of document
864Ctrl-End: end of document
865Page-Up: Up a screen
866Page-Down: Down a screen
867
868Maybe:
869
870Ctrl-Alt-PgUp: Start of window
871Ctrl-Alt-PgDn: End of window
872F8: Start selection mode
873Esc: End selection mode
874
875Adding Shift does the above but starts/extends selection.
876
877
878 */
879
880bool wxRichTextCtrl::KeyboardNavigate(int keyCode, int flags)
881{
882 bool success = false;
883
884 if (keyCode == WXK_RIGHT || keyCode == WXK_NUMPAD_RIGHT)
885 {
886 if (flags & wxRICHTEXT_CTRL_DOWN)
887 success = WordRight(1, flags);
888 else
889 success = MoveRight(1, flags);
890 }
891 else if (keyCode == WXK_LEFT || keyCode == WXK_NUMPAD_LEFT)
892 {
893 if (flags & wxRICHTEXT_CTRL_DOWN)
894 success = WordLeft(1, flags);
895 else
896 success = MoveLeft(1, flags);
897 }
898 else if (keyCode == WXK_UP || keyCode == WXK_NUMPAD_UP)
899 {
900 if (flags & wxRICHTEXT_CTRL_DOWN)
901 success = MoveToParagraphStart(flags);
902 else
903 success = MoveUp(1, flags);
904 }
905 else if (keyCode == WXK_DOWN || keyCode == WXK_NUMPAD_DOWN)
906 {
907 if (flags & wxRICHTEXT_CTRL_DOWN)
908 success = MoveToParagraphEnd(flags);
909 else
910 success = MoveDown(1, flags);
911 }
912 else if (keyCode == WXK_PAGEUP || keyCode == WXK_NUMPAD_PAGEUP)
913 {
914 success = PageUp(1, flags);
915 }
916 else if (keyCode == WXK_PAGEDOWN || keyCode == WXK_NUMPAD_PAGEDOWN)
917 {
918 success = PageDown(1, flags);
919 }
920 else if (keyCode == WXK_HOME || keyCode == WXK_NUMPAD_HOME)
921 {
922 if (flags & wxRICHTEXT_CTRL_DOWN)
923 success = MoveHome(flags);
924 else
925 success = MoveToLineStart(flags);
926 }
927 else if (keyCode == WXK_END || keyCode == WXK_NUMPAD_END)
928 {
929 if (flags & wxRICHTEXT_CTRL_DOWN)
930 success = MoveEnd(flags);
931 else
932 success = MoveToLineEnd(flags);
933 }
934
935 if (success)
936 {
937 ScrollIntoView(m_caretPosition, keyCode);
938 SetDefaultStyleToCursorStyle();
939 }
940
941 return success;
942}
943
944/// Extend the selection. Selections are in caret positions.
945bool wxRichTextCtrl::ExtendSelection(long oldPos, long newPos, int flags)
946{
947 if (flags & wxRICHTEXT_SHIFT_DOWN)
948 {
949 // If not currently selecting, start selecting
950 if (m_selectionRange.GetStart() == -2)
951 {
952 m_selectionAnchor = oldPos;
953
954 if (oldPos > newPos)
955 m_selectionRange.SetRange(newPos+1, oldPos);
956 else
957 m_selectionRange.SetRange(oldPos+1, newPos);
958 }
959 else
960 {
961 // Always ensure that the selection range start is greater than
962 // the end.
963 if (newPos > m_selectionAnchor)
964 m_selectionRange.SetRange(m_selectionAnchor+1, newPos);
965 else
966 m_selectionRange.SetRange(newPos+1, m_selectionAnchor);
967 }
968
969 if (m_selectionRange.GetStart() > m_selectionRange.GetEnd())
970 {
971 wxLogDebug(wxT("Strange selection range"));
972 }
973
974 return true;
975 }
976 else
977 return false;
978}
979
980/// Scroll into view, returning true if we scrolled.
981/// This takes a _caret_ position.
982bool wxRichTextCtrl::ScrollIntoView(long position, int keyCode)
983{
984 wxRichTextLine* line = GetVisibleLineForCaretPosition(position);
985
986 if (!line)
987 return false;
988
989 int ppuX, ppuY;
990 GetScrollPixelsPerUnit(& ppuX, & ppuY);
991
992 int startXUnits, startYUnits;
993 GetViewStart(& startXUnits, & startYUnits);
994 int startY = startYUnits * ppuY;
995
996 int sx = 0, sy = 0;
997 GetVirtualSize(& sx, & sy);
998 int sxUnits = 0;
999 int syUnits = 0;
1000 if (ppuY != 0)
1001 syUnits = sy/ppuY;
1002
1003 wxRect rect = line->GetRect();
1004
1005 bool scrolled = false;
1006
1007 wxSize clientSize = GetClientSize();
1008
1009 // Going down
1010 if (keyCode == WXK_DOWN || keyCode == WXK_NUMPAD_DOWN ||
1011 keyCode == WXK_RIGHT || keyCode == WXK_NUMPAD_DOWN ||
1012 keyCode == WXK_END || keyCode == WXK_NUMPAD_END ||
1013 keyCode == WXK_PAGEDOWN || keyCode == WXK_NUMPAD_PAGEDOWN)
1014 {
1015 if ((rect.y + rect.height) > (clientSize.y + startY))
1016 {
1017 // Make it scroll so this item is at the bottom
1018 // of the window
1019 int y = rect.y - (clientSize.y - rect.height);
1020 int yUnits = (int) (0.5 + ((float) y)/(float) ppuY);
1021
1022 // If we're still off the screen, scroll another line down
1023 if ((rect.y + rect.height) > (clientSize.y + (yUnits*ppuY)))
1024 yUnits ++;
1025
1026 if (startYUnits != yUnits)
1027 {
1028 SetScrollbars(ppuX, ppuY, sxUnits, syUnits, 0, yUnits);
1029 scrolled = true;
1030 }
1031 }
1032 else if (rect.y < startY)
1033 {
1034 // Make it scroll so this item is at the top
1035 // of the window
1036 int y = rect.y ;
1037 int yUnits = (int) (0.5 + ((float) y)/(float) ppuY);
1038
1039 if (startYUnits != yUnits)
1040 {
1041 SetScrollbars(ppuX, ppuY, sxUnits, syUnits, 0, yUnits);
1042 scrolled = true;
1043 }
1044 }
1045 }
1046 // Going up
1047 else if (keyCode == WXK_UP || keyCode == WXK_NUMPAD_UP ||
1048 keyCode == WXK_LEFT || keyCode == WXK_NUMPAD_LEFT ||
1049 keyCode == WXK_HOME || keyCode == WXK_NUMPAD_HOME ||
1050 keyCode == WXK_PAGEUP || keyCode == WXK_NUMPAD_PAGEUP )
1051 {
1052 if (rect.y < startY)
1053 {
1054 // Make it scroll so this item is at the top
1055 // of the window
1056 int y = rect.y ;
1057 int yUnits = (int) (0.5 + ((float) y)/(float) ppuY);
1058
1059 if (startYUnits != yUnits)
1060 {
1061 SetScrollbars(ppuX, ppuY, sxUnits, syUnits, 0, yUnits);
1062 scrolled = true;
1063 }
1064 }
1065 else if ((rect.y + rect.height) > (clientSize.y + startY))
1066 {
1067 // Make it scroll so this item is at the bottom
1068 // of the window
1069 int y = rect.y - (clientSize.y - rect.height);
1070 int yUnits = (int) (0.5 + ((float) y)/(float) ppuY);
1071
1072 // If we're still off the screen, scroll another line down
1073 if ((rect.y + rect.height) > (clientSize.y + (yUnits*ppuY)))
1074 yUnits ++;
1075
1076 if (startYUnits != yUnits)
1077 {
1078 SetScrollbars(ppuX, ppuY, sxUnits, syUnits, 0, yUnits);
1079 scrolled = true;
1080 }
1081 }
1082 }
1083 PositionCaret();
1084
1085 return scrolled;
1086}
1087
1088/// Is the given position visible on the screen?
1089bool wxRichTextCtrl::IsPositionVisible(long pos) const
1090{
1091 wxRichTextLine* line = GetVisibleLineForCaretPosition(pos-1);
1092
1093 if (!line)
1094 return false;
1095
1096 int ppuX, ppuY;
1097 GetScrollPixelsPerUnit(& ppuX, & ppuY);
1098
1099 int startX, startY;
1100 GetViewStart(& startX, & startY);
1101 startX = 0;
1102 startY = startY * ppuY;
1103
1104 int sx = 0, sy = 0;
1105 GetVirtualSize(& sx, & sy);
1106 sx = 0;
1107 if (ppuY != 0)
1108 sy = sy/ppuY;
1109
1110 wxRect rect = line->GetRect();
1111
1112 wxSize clientSize = GetClientSize();
1113
1114 return !(((rect.y + rect.height) > (clientSize.y + startY)) || rect.y < startY);
1115}
1116
1117void wxRichTextCtrl::SetCaretPosition(long position, bool showAtLineStart)
1118{
1119 m_caretPosition = position;
1120 m_caretAtLineStart = showAtLineStart;
1121}
1122
1123/// Move caret one visual step forward: this may mean setting a flag
1124/// and keeping the same position if we're going from the end of one line
1125/// to the start of the next, which may be the exact same caret position.
1126void wxRichTextCtrl::MoveCaretForward(long oldPosition)
1127{
1128 wxRichTextParagraph* para = GetBuffer().GetParagraphAtPosition(oldPosition);
1129
1130 // Only do the check if we're not at the end of the paragraph (where things work OK
1131 // anyway)
1132 if (para && (oldPosition != para->GetRange().GetEnd() - 1))
1133 {
1134 wxRichTextLine* line = GetBuffer().GetLineAtPosition(oldPosition);
1135
1136 if (line)
1137 {
1138 wxRichTextRange lineRange = line->GetAbsoluteRange();
1139
1140 // We're at the end of a line. See whether we need to
1141 // stay at the same actual caret position but change visual
1142 // position, or not.
1143 if (oldPosition == lineRange.GetEnd())
1144 {
1145 if (m_caretAtLineStart)
1146 {
1147 // We're already at the start of the line, so actually move on now.
1148 m_caretPosition = oldPosition + 1;
1149 m_caretAtLineStart = false;
1150 }
1151 else
1152 {
1153 // We're showing at the end of the line, so keep to
1154 // the same position but indicate that we're to show
1155 // at the start of the next line.
1156 m_caretPosition = oldPosition;
1157 m_caretAtLineStart = true;
1158 }
1159 SetDefaultStyleToCursorStyle();
1160 return;
1161 }
1162 }
1163 }
1164 m_caretPosition ++;
1165 SetDefaultStyleToCursorStyle();
1166}
1167
1168/// Move caret one visual step backward: this may mean setting a flag
1169/// and keeping the same position if we're going from the end of one line
1170/// to the start of the next, which may be the exact same caret position.
1171void wxRichTextCtrl::MoveCaretBack(long oldPosition)
1172{
1173 wxRichTextParagraph* para = GetBuffer().GetParagraphAtPosition(oldPosition);
1174
1175 // Only do the check if we're not at the start of the paragraph (where things work OK
1176 // anyway)
1177 if (para && (oldPosition != para->GetRange().GetStart()))
1178 {
1179 wxRichTextLine* line = GetBuffer().GetLineAtPosition(oldPosition);
1180
1181 if (line)
1182 {
1183 wxRichTextRange lineRange = line->GetAbsoluteRange();
1184
1185 // We're at the start of a line. See whether we need to
1186 // stay at the same actual caret position but change visual
1187 // position, or not.
1188 if (oldPosition == lineRange.GetStart())
1189 {
1190 m_caretPosition = oldPosition-1;
1191 m_caretAtLineStart = true;
1192 return;
1193 }
1194 else if (oldPosition == lineRange.GetEnd())
1195 {
1196 if (m_caretAtLineStart)
1197 {
1198 // We're at the start of the line, so keep the same caret position
1199 // but clear the start-of-line flag.
1200 m_caretPosition = oldPosition;
1201 m_caretAtLineStart = false;
1202 }
1203 else
1204 {
1205 // We're showing at the end of the line, so go back
1206 // to the previous character position.
1207 m_caretPosition = oldPosition - 1;
1208 }
1209 SetDefaultStyleToCursorStyle();
1210 return;
1211 }
1212 }
1213 }
1214 m_caretPosition --;
1215 SetDefaultStyleToCursorStyle();
1216}
1217
1218/// Move right
1219bool wxRichTextCtrl::MoveRight(int noPositions, int flags)
1220{
1221 long endPos = GetBuffer().GetRange().GetEnd();
1222
1223 if (m_caretPosition + noPositions < endPos)
1224 {
1225 long oldPos = m_caretPosition;
1226 long newPos = m_caretPosition + noPositions;
1227
1228 bool extendSel = ExtendSelection(m_caretPosition, newPos, flags);
1229 if (!extendSel)
1230 SelectNone();
1231
1232 // Determine by looking at oldPos and m_caretPosition whether
1233 // we moved from the end of a line to the start of the next line, in which case
1234 // we want to adjust the caret position such that it is positioned at the
1235 // start of the next line, rather than jumping past the first character of the
1236 // line.
1237 if (noPositions == 1 && !extendSel)
1238 MoveCaretForward(oldPos);
1239 else
1240 SetCaretPosition(newPos);
1241
1242 PositionCaret();
1243 SetDefaultStyleToCursorStyle();
1244
1245 if (extendSel)
1246 Refresh(false);
1247 return true;
1248 }
1249 else
1250 return false;
1251}
1252
1253/// Move left
1254bool wxRichTextCtrl::MoveLeft(int noPositions, int flags)
1255{
1256 long startPos = -1;
1257
1258 if (m_caretPosition > startPos - noPositions + 1)
1259 {
1260 long oldPos = m_caretPosition;
1261 long newPos = m_caretPosition - noPositions;
1262 bool extendSel = ExtendSelection(m_caretPosition, newPos, flags);
1263 if (!extendSel)
1264 SelectNone();
1265
1266 if (noPositions == 1 && !extendSel)
1267 MoveCaretBack(oldPos);
1268 else
1269 SetCaretPosition(newPos);
1270
1271 PositionCaret();
1272 SetDefaultStyleToCursorStyle();
1273
1274 if (extendSel)
1275 Refresh(false);
1276 return true;
1277 }
1278 else
1279 return false;
1280}
1281
1282/// Move up
1283bool wxRichTextCtrl::MoveUp(int noLines, int flags)
1284{
1285 return MoveDown(- noLines, flags);
1286}
1287
1288/// Move up
1289bool wxRichTextCtrl::MoveDown(int noLines, int flags)
1290{
1291 if (!GetCaret())
1292 return false;
1293
1294 long lineNumber = GetBuffer().GetVisibleLineNumber(m_caretPosition, true, m_caretAtLineStart);
1295 wxPoint pt = GetCaret()->GetPosition();
1296 long newLine = lineNumber + noLines;
1297
1298 if (lineNumber != -1)
1299 {
1300 if (noLines > 0)
1301 {
1302 long lastLine = GetBuffer().GetVisibleLineNumber(GetBuffer().GetRange().GetEnd());
1303
1304 if (newLine > lastLine)
1305 return false;
1306 }
1307 else
1308 {
1309 if (newLine < 0)
1310 return false;
1311 }
1312 }
1313
1314 wxRichTextLine* lineObj = GetBuffer().GetLineForVisibleLineNumber(newLine);
1315 if (lineObj)
1316 {
1317 pt.y = lineObj->GetAbsolutePosition().y + 2;
1318 }
1319 else
1320 return false;
1321
1322 long newPos = 0;
1323 wxClientDC dc(this);
1324 PrepareDC(dc);
1325 dc.SetFont(GetFont());
1326
1327 int hitTest = GetBuffer().HitTest(dc, pt, newPos);
1328
1329 if (hitTest != wxRICHTEXT_HITTEST_NONE)
1330 {
1331 // If end of previous line, and hitTest is wxRICHTEXT_HITTEST_BEFORE,
1332 // we want to be at the end of the last line but with m_caretAtLineStart set to true,
1333 // so we view the caret at the start of the line.
1334 bool caretLineStart = false;
1335 if (hitTest & wxRICHTEXT_HITTEST_BEFORE)
1336 {
1337 wxRichTextLine* thisLine = GetBuffer().GetLineAtPosition(newPos-1);
1338 wxRichTextRange lineRange;
1339 if (thisLine)
1340 lineRange = thisLine->GetAbsoluteRange();
1341
1342 if (thisLine && (newPos-1) == lineRange.GetEnd())
1343 {
1344 newPos --;
1345 caretLineStart = true;
1346 }
1347 else
1348 {
1349 wxRichTextParagraph* para = GetBuffer().GetParagraphAtPosition(newPos);
1350 if (para && para->GetRange().GetStart() == newPos)
1351 newPos --;
1352 }
1353 }
1354
1355 long newSelEnd = newPos;
1356
1357 bool extendSel = ExtendSelection(m_caretPosition, newSelEnd, flags);
1358 if (!extendSel)
1359 SelectNone();
1360
1361 SetCaretPosition(newPos, caretLineStart);
1362 PositionCaret();
1363 SetDefaultStyleToCursorStyle();
1364
1365 if (extendSel)
1366 Refresh(false);
1367 return true;
1368 }
1369
1370 return false;
1371}
1372
1373/// Move to the end of the paragraph
1374bool wxRichTextCtrl::MoveToParagraphEnd(int flags)
1375{
1376 wxRichTextParagraph* para = GetBuffer().GetParagraphAtPosition(m_caretPosition, true);
1377 if (para)
1378 {
1379 long newPos = para->GetRange().GetEnd() - 1;
1380 bool extendSel = ExtendSelection(m_caretPosition, newPos, flags);
1381 if (!extendSel)
1382 SelectNone();
1383
1384 SetCaretPosition(newPos);
1385 PositionCaret();
1386 SetDefaultStyleToCursorStyle();
1387
1388 if (extendSel)
1389 Refresh(false);
1390 return true;
1391 }
1392
1393 return false;
1394}
1395
1396/// Move to the start of the paragraph
1397bool wxRichTextCtrl::MoveToParagraphStart(int flags)
1398{
1399 wxRichTextParagraph* para = GetBuffer().GetParagraphAtPosition(m_caretPosition, true);
1400 if (para)
1401 {
1402 long newPos = para->GetRange().GetStart() - 1;
1403 bool extendSel = ExtendSelection(m_caretPosition, newPos, flags);
1404 if (!extendSel)
1405 SelectNone();
1406
1407 SetCaretPosition(newPos);
1408 PositionCaret();
1409 SetDefaultStyleToCursorStyle();
1410
1411 if (extendSel)
1412 Refresh(false);
1413 return true;
1414 }
1415
1416 return false;
1417}
1418
1419/// Move to the end of the line
1420bool wxRichTextCtrl::MoveToLineEnd(int flags)
1421{
1422 wxRichTextLine* line = GetVisibleLineForCaretPosition(m_caretPosition);
1423
1424 if (line)
1425 {
1426 wxRichTextRange lineRange = line->GetAbsoluteRange();
1427 long newPos = lineRange.GetEnd();
1428 bool extendSel = ExtendSelection(m_caretPosition, newPos, flags);
1429 if (!extendSel)
1430 SelectNone();
1431
1432 SetCaretPosition(newPos);
1433 PositionCaret();
1434 SetDefaultStyleToCursorStyle();
1435
1436 if (extendSel)
1437 Refresh(false);
1438 return true;
1439 }
1440
1441 return false;
1442}
1443
1444/// Move to the start of the line
1445bool wxRichTextCtrl::MoveToLineStart(int flags)
1446{
1447 wxRichTextLine* line = GetVisibleLineForCaretPosition(m_caretPosition);
1448 if (line)
1449 {
1450 wxRichTextRange lineRange = line->GetAbsoluteRange();
1451 long newPos = lineRange.GetStart()-1;
1452
1453 bool extendSel = ExtendSelection(m_caretPosition, newPos, flags);
1454 if (!extendSel)
1455 SelectNone();
1456
1457 wxRichTextParagraph* para = GetBuffer().GetParagraphForLine(line);
1458
1459 SetCaretPosition(newPos, para->GetRange().GetStart() != lineRange.GetStart());
1460 PositionCaret();
1461 SetDefaultStyleToCursorStyle();
1462
1463 if (extendSel)
1464 Refresh(false);
1465 return true;
1466 }
1467
1468 return false;
1469}
1470
1471/// Move to the start of the buffer
1472bool wxRichTextCtrl::MoveHome(int flags)
1473{
1474 if (m_caretPosition != -1)
1475 {
1476 bool extendSel = ExtendSelection(m_caretPosition, -1, flags);
1477 if (!extendSel)
1478 SelectNone();
1479
1480 SetCaretPosition(-1);
1481 PositionCaret();
1482 SetDefaultStyleToCursorStyle();
1483
1484 if (extendSel)
1485 Refresh(false);
1486 return true;
1487 }
1488 else
1489 return false;
1490}
1491
1492/// Move to the end of the buffer
1493bool wxRichTextCtrl::MoveEnd(int flags)
1494{
1495 long endPos = GetBuffer().GetRange().GetEnd()-1;
1496
1497 if (m_caretPosition != endPos)
1498 {
1499 bool extendSel = ExtendSelection(m_caretPosition, endPos, flags);
1500 if (!extendSel)
1501 SelectNone();
1502
1503 SetCaretPosition(endPos);
1504 PositionCaret();
1505 SetDefaultStyleToCursorStyle();
1506
1507 if (extendSel)
1508 Refresh(false);
1509 return true;
1510 }
1511 else
1512 return false;
1513}
1514
1515/// Move noPages pages up
1516bool wxRichTextCtrl::PageUp(int noPages, int flags)
1517{
1518 return PageDown(- noPages, flags);
1519}
1520
1521/// Move noPages pages down
1522bool wxRichTextCtrl::PageDown(int noPages, int flags)
1523{
1524 // Calculate which line occurs noPages * screen height further down.
1525 wxRichTextLine* line = GetVisibleLineForCaretPosition(m_caretPosition);
1526 if (line)
1527 {
1528 wxSize clientSize = GetClientSize();
1529 int newY = line->GetAbsolutePosition().y + noPages*clientSize.y;
1530
1531 wxRichTextLine* newLine = GetBuffer().GetLineAtYPosition(newY);
1532 if (newLine)
1533 {
1534 wxRichTextRange lineRange = newLine->GetAbsoluteRange();
1535 long pos = lineRange.GetStart()-1;
1536 if (pos != m_caretPosition)
1537 {
1538 wxRichTextParagraph* para = GetBuffer().GetParagraphForLine(newLine);
1539
1540 bool extendSel = ExtendSelection(m_caretPosition, pos, flags);
1541 if (!extendSel)
1542 SelectNone();
1543
1544 SetCaretPosition(pos, para->GetRange().GetStart() != lineRange.GetStart());
1545 PositionCaret();
1546 SetDefaultStyleToCursorStyle();
1547
1548 if (extendSel)
1549 Refresh(false);
1550 return true;
1551 }
1552 }
1553 }
1554
1555 return false;
1556}
1557
1558static bool wxRichTextCtrlIsWhitespace(const wxString& str)
1559{
1560 return str == wxT(" ") || str == wxT("\t");
1561}
1562
1563// Finds the caret position for the next word
1564long wxRichTextCtrl::FindNextWordPosition(int direction) const
1565{
1566 long endPos = GetBuffer().GetRange().GetEnd();
1567
1568 if (direction > 0)
1569 {
1570 long i = m_caretPosition+1+direction; // +1 for conversion to character pos
1571
1572 // First skip current text to space
1573 while (i < endPos && i > -1)
1574 {
1575 // i is in character, not caret positions
1576 wxString text = GetBuffer().GetTextForRange(wxRichTextRange(i, i));
1577 wxRichTextLine* line = GetBuffer().GetLineAtPosition(i, false);
1578 if (line && (i == line->GetAbsoluteRange().GetEnd()))
1579 {
1580 break;
1581 }
1582 else if (!wxRichTextCtrlIsWhitespace(text) && !text.empty())
1583 i += direction;
1584 else
1585 {
1586 break;
1587 }
1588 }
1589 while (i < endPos && i > -1)
1590 {
1591 // i is in character, not caret positions
1592 wxString text = GetBuffer().GetTextForRange(wxRichTextRange(i, i));
1593 wxRichTextLine* line = GetBuffer().GetLineAtPosition(i, false);
1594 if (line && (i == line->GetAbsoluteRange().GetEnd()))
1595 return wxMax(-1, i);
1596
1597 if (text.empty()) // End of paragraph, or maybe an image
1598 return wxMax(-1, i - 1);
1599 else if (wxRichTextCtrlIsWhitespace(text) || text.empty())
1600 i += direction;
1601 else
1602 {
1603 // Convert to caret position
1604 return wxMax(-1, i - 1);
1605 }
1606 }
1607 if (i >= endPos)
1608 return endPos-1;
1609 return i-1;
1610 }
1611 else
1612 {
1613 long i = m_caretPosition;
1614
1615 // First skip white space
1616 while (i < endPos && i > -1)
1617 {
1618 // i is in character, not caret positions
1619 wxString text = GetBuffer().GetTextForRange(wxRichTextRange(i, i));
1620 wxRichTextLine* line = GetBuffer().GetLineAtPosition(i, false);
1621
1622 if (text.empty() || (line && (i == line->GetAbsoluteRange().GetStart()))) // End of paragraph, or maybe an image
1623 break;
1624 else if (wxRichTextCtrlIsWhitespace(text) || text.empty())
1625 i += direction;
1626 else
1627 break;
1628 }
1629 // Next skip current text to space
1630 while (i < endPos && i > -1)
1631 {
1632 // i is in character, not caret positions
1633 wxString text = GetBuffer().GetTextForRange(wxRichTextRange(i, i));
1634 wxRichTextLine* line = GetBuffer().GetLineAtPosition(i, false);
1635 if (line && line->GetAbsoluteRange().GetStart() == i)
1636 return i-1;
1637
1638 if (!wxRichTextCtrlIsWhitespace(text) /* && !text.empty() */)
1639 i += direction;
1640 else
1641 {
1642 return i;
1643 }
1644 }
1645 if (i < -1)
1646 return -1;
1647 return i;
1648 }
1649}
1650
1651/// Move n words left
1652bool wxRichTextCtrl::WordLeft(int WXUNUSED(n), int flags)
1653{
1654 long pos = FindNextWordPosition(-1);
1655 if (pos != m_caretPosition)
1656 {
1657 wxRichTextParagraph* para = GetBuffer().GetParagraphAtPosition(pos, true);
1658
1659 bool extendSel = ExtendSelection(m_caretPosition, pos, flags);
1660 if (!extendSel)
1661 SelectNone();
1662
1663 SetCaretPosition(pos, para->GetRange().GetStart() != pos);
1664 PositionCaret();
1665 SetDefaultStyleToCursorStyle();
1666
1667 if (extendSel)
1668 Refresh(false);
1669 return true;
1670 }
1671
1672 return false;
1673}
1674
1675/// Move n words right
1676bool wxRichTextCtrl::WordRight(int WXUNUSED(n), int flags)
1677{
1678 long pos = FindNextWordPosition(1);
1679 if (pos != m_caretPosition)
1680 {
1681 wxRichTextParagraph* para = GetBuffer().GetParagraphAtPosition(pos, true);
1682
1683 bool extendSel = ExtendSelection(m_caretPosition, pos, flags);
1684 if (!extendSel)
1685 SelectNone();
1686
1687 SetCaretPosition(pos, para->GetRange().GetStart() != pos);
1688 PositionCaret();
1689 SetDefaultStyleToCursorStyle();
1690
1691 if (extendSel)
1692 Refresh(false);
1693 return true;
1694 }
1695
1696 return false;
1697}
1698
1699/// Sizing
1700void wxRichTextCtrl::OnSize(wxSizeEvent& event)
1701{
1702 // Only do sizing optimization for large buffers
1703 if (GetBuffer().GetRange().GetEnd() > m_delayedLayoutThreshold)
1704 {
1705 m_fullLayoutRequired = true;
1706 m_fullLayoutTime = wxGetLocalTimeMillis();
1707 m_fullLayoutSavedPosition = GetFirstVisiblePosition();
1708 LayoutContent(true /* onlyVisibleRect */);
1709 }
1710 else
1711 GetBuffer().Invalidate(wxRICHTEXT_ALL);
1712
1713#if wxRICHTEXT_BUFFERED_PAINTING
1714 RecreateBuffer();
1715#endif
1716
1717 event.Skip();
1718}
1719
1720
1721/// Idle-time processing
1722void wxRichTextCtrl::OnIdle(wxIdleEvent& event)
1723{
1724 const int layoutInterval = wxRICHTEXT_DEFAULT_LAYOUT_INTERVAL;
1725
1726 if (m_fullLayoutRequired && (wxGetLocalTimeMillis() > (m_fullLayoutTime + layoutInterval)))
1727 {
1728 m_fullLayoutRequired = false;
1729 m_fullLayoutTime = 0;
1730 GetBuffer().Invalidate(wxRICHTEXT_ALL);
1731 ShowPosition(m_fullLayoutSavedPosition);
1732 Refresh(false);
1733 }
1734
1735 if (m_caretPositionForDefaultStyle != -2)
1736 {
1737 // If the caret position has changed, no longer reflect the default style
1738 // in the UI.
1739 if (GetCaretPosition() != m_caretPositionForDefaultStyle)
1740 m_caretPositionForDefaultStyle = -2;
1741 }
1742
1743 event.Skip();
1744}
1745
1746/// Scrolling
1747void wxRichTextCtrl::OnScroll(wxScrollWinEvent& event)
1748{
1749 // Not used
1750 event.Skip();
1751}
1752
1753/// Set up scrollbars, e.g. after a resize
1754void wxRichTextCtrl::SetupScrollbars(bool atTop)
1755{
1756 if (m_freezeCount)
1757 return;
1758
1759 if (GetBuffer().IsEmpty())
1760 {
1761 SetScrollbars(0, 0, 0, 0, 0, 0);
1762 return;
1763 }
1764
1765 // TODO: reimplement scrolling so we scroll by line, not by fixed number
1766 // of pixels. See e.g. wxVScrolledWindow for ideas.
1767 int pixelsPerUnit = 5;
1768 wxSize clientSize = GetClientSize();
1769
1770 int maxHeight = GetBuffer().GetCachedSize().y;
1771
1772 // Round up so we have at least maxHeight pixels
1773 int unitsY = (int) (((float)maxHeight/(float)pixelsPerUnit) + 0.5);
1774
1775 int startX = 0, startY = 0;
1776 if (!atTop)
1777 GetViewStart(& startX, & startY);
1778
1779 int maxPositionX = 0; // wxMax(sz.x - clientSize.x, 0);
1780 int maxPositionY = (int) ((((float)(wxMax((unitsY*pixelsPerUnit) - clientSize.y, 0)))/((float)pixelsPerUnit)) + 0.5);
1781
1782 // Move to previous scroll position if
1783 // possible
1784 SetScrollbars(0, pixelsPerUnit,
1785 0, unitsY,
1786 wxMin(maxPositionX, startX), wxMin(maxPositionY, startY));
1787}
1788
1789/// Paint the background
1790void wxRichTextCtrl::PaintBackground(wxDC& dc)
1791{
1792 wxColour backgroundColour = GetBackgroundColour();
1793 if (!backgroundColour.Ok())
1794 backgroundColour = wxSystemSettings::GetColour(wxSYS_COLOUR_3DFACE);
1795
1796 // Clear the background
1797 dc.SetBrush(wxBrush(backgroundColour));
1798 dc.SetPen(*wxTRANSPARENT_PEN);
1799 wxRect windowRect(GetClientSize());
1800 windowRect.x -= 2; windowRect.y -= 2;
1801 windowRect.width += 4; windowRect.height += 4;
1802
1803 // We need to shift the rectangle to take into account
1804 // scrolling. Converting device to logical coordinates.
1805 CalcUnscrolledPosition(windowRect.x, windowRect.y, & windowRect.x, & windowRect.y);
1806 dc.DrawRectangle(windowRect);
1807}
1808
1809#if wxRICHTEXT_BUFFERED_PAINTING
1810/// Recreate buffer bitmap if necessary
1811bool wxRichTextCtrl::RecreateBuffer(const wxSize& size)
1812{
1813 wxSize sz = size;
1814 if (sz == wxDefaultSize)
1815 sz = GetClientSize();
1816
1817 if (sz.x < 1 || sz.y < 1)
1818 return false;
1819
1820 if (!m_bufferBitmap.Ok() || m_bufferBitmap.GetWidth() < sz.x || m_bufferBitmap.GetHeight() < sz.y)
1821 m_bufferBitmap = wxBitmap(sz.x, sz.y);
1822 return m_bufferBitmap.Ok();
1823}
1824#endif
1825
1826// ----------------------------------------------------------------------------
1827// file IO functions
1828// ----------------------------------------------------------------------------
1829
1830bool wxRichTextCtrl::DoLoadFile(const wxString& filename, int fileType)
1831{
1832 bool success = GetBuffer().LoadFile(filename, fileType);
1833 if (success)
1834 m_filename = filename;
1835
1836 DiscardEdits();
1837 SetInsertionPoint(0);
1838 LayoutContent();
1839 PositionCaret();
1840 SetupScrollbars(true);
1841 Refresh(false);
1842 SendTextUpdatedEvent();
1843
1844 if (success)
1845 return true;
1846 else
1847 {
1848 wxLogError(_("File couldn't be loaded."));
1849
1850 return false;
1851 }
1852}
1853
1854bool wxRichTextCtrl::DoSaveFile(const wxString& filename, int fileType)
1855{
1856 if (GetBuffer().SaveFile(filename, fileType))
1857 {
1858 m_filename = filename;
1859
1860 DiscardEdits();
1861
1862 return true;
1863 }
1864
1865 wxLogError(_("The text couldn't be saved."));
1866
1867 return false;
1868}
1869
1870// ----------------------------------------------------------------------------
1871// wxRichTextCtrl specific functionality
1872// ----------------------------------------------------------------------------
1873
1874/// Add a new paragraph of text to the end of the buffer
1875wxRichTextRange wxRichTextCtrl::AddParagraph(const wxString& text)
1876{
1877 return GetBuffer().AddParagraph(text);
1878}
1879
1880/// Add an image
1881wxRichTextRange wxRichTextCtrl::AddImage(const wxImage& image)
1882{
1883 return GetBuffer().AddImage(image);
1884}
1885
1886// ----------------------------------------------------------------------------
1887// selection and ranges
1888// ----------------------------------------------------------------------------
1889
1890void wxRichTextCtrl::SelectAll()
1891{
1892 SetSelection(0, GetLastPosition()+1);
1893 m_selectionAnchor = -1;
1894}
1895
1896/// Select none
1897void wxRichTextCtrl::SelectNone()
1898{
1899 if (!(GetSelectionRange() == wxRichTextRange(-2, -2)))
1900 SetSelection(-2, -2);
1901 m_selectionAnchor = -2;
1902}
1903
1904static bool wxIsWordDelimiter(const wxString& text)
1905{
1906 return !text.IsEmpty() && !wxIsalnum(text[0]);
1907}
1908
1909/// Select the word at the given character position
1910bool wxRichTextCtrl::SelectWord(long position)
1911{
1912 if (position < 0 || position > GetBuffer().GetRange().GetEnd())
1913 return false;
1914
1915 wxRichTextParagraph* para = GetBuffer().GetParagraphAtPosition(position);
1916 if (!para)
1917 return false;
1918
1919 long positionStart = position;
1920 long positionEnd = position;
1921
1922 for (positionStart = position; positionStart >= para->GetRange().GetStart(); positionStart --)
1923 {
1924 wxString text = GetBuffer().GetTextForRange(wxRichTextRange(positionStart, positionStart));
1925 if (wxIsWordDelimiter(text))
1926 {
1927 positionStart ++;
1928 break;
1929 }
1930 }
1931 if (positionStart < para->GetRange().GetStart())
1932 positionStart = para->GetRange().GetStart();
1933
1934 for (positionEnd = position; positionEnd < para->GetRange().GetEnd(); positionEnd ++)
1935 {
1936 wxString text = GetBuffer().GetTextForRange(wxRichTextRange(positionEnd, positionEnd));
1937 if (wxIsWordDelimiter(text))
1938 {
1939 positionEnd --;
1940 break;
1941 }
1942 }
1943 if (positionEnd >= para->GetRange().GetEnd())
1944 positionEnd = para->GetRange().GetEnd();
1945
1946 SetSelection(positionStart, positionEnd+1);
1947
1948 if (positionStart >= 0)
1949 {
1950 MoveCaret(positionStart-1, true);
1951 SetDefaultStyleToCursorStyle();
1952 }
1953
1954 return true;
1955}
1956
1957wxString wxRichTextCtrl::GetStringSelection() const
1958{
1959 long from, to;
1960 GetSelection(&from, &to);
1961
1962 return GetRange(from, to);
1963}
1964
1965// ----------------------------------------------------------------------------
1966// hit testing
1967// ----------------------------------------------------------------------------
1968
1969wxTextCtrlHitTestResult
1970wxRichTextCtrl::HitTest(const wxPoint& pt, wxTextCoord *x, wxTextCoord *y) const
1971{
1972 // implement in terms of the other overload as the native ports typically
1973 // can get the position and not (x, y) pair directly (although wxUniv
1974 // directly gets x and y -- and so overrides this method as well)
1975 long pos;
1976 wxTextCtrlHitTestResult rc = HitTest(pt, &pos);
1977
1978 if ( rc != wxTE_HT_UNKNOWN )
1979 {
1980 PositionToXY(pos, x, y);
1981 }
1982
1983 return rc;
1984}
1985
1986wxTextCtrlHitTestResult
1987wxRichTextCtrl::HitTest(const wxPoint& pt,
1988 long * pos) const
1989{
1990 wxClientDC dc((wxRichTextCtrl*) this);
1991 ((wxRichTextCtrl*)this)->PrepareDC(dc);
1992
1993 // Buffer uses logical position (relative to start of buffer)
1994 // so convert
1995 wxPoint pt2 = GetLogicalPoint(pt);
1996
1997 int hit = ((wxRichTextCtrl*)this)->GetBuffer().HitTest(dc, pt2, *pos);
1998
1999 if ((hit & wxRICHTEXT_HITTEST_BEFORE) && (hit & wxRICHTEXT_HITTEST_OUTSIDE))
2000 return wxTE_HT_BEFORE;
2001 else if ((hit & wxRICHTEXT_HITTEST_AFTER) && (hit & wxRICHTEXT_HITTEST_OUTSIDE))
2002 return wxTE_HT_BEYOND;
2003 else if (hit & wxRICHTEXT_HITTEST_BEFORE|wxRICHTEXT_HITTEST_AFTER)
2004 return wxTE_HT_ON_TEXT;
2005
2006 return wxTE_HT_UNKNOWN;
2007}
2008
2009// ----------------------------------------------------------------------------
2010// set/get the controls text
2011// ----------------------------------------------------------------------------
2012
2013wxString wxRichTextCtrl::GetValue() const
2014{
2015 return GetBuffer().GetText();
2016}
2017
2018wxString wxRichTextCtrl::GetRange(long from, long to) const
2019{
2020 // Public API for range is different from internals
2021 return GetBuffer().GetTextForRange(wxRichTextRange(from, to-1));
2022}
2023
2024void wxRichTextCtrl::DoSetValue(const wxString& value, int flags)
2025{
2026 Clear();
2027
2028 // if the text is long enough, it's faster to just set it instead of first
2029 // comparing it with the old one (chances are that it will be different
2030 // anyhow, this comparison is there to avoid flicker for small single-line
2031 // edit controls mostly)
2032 if ( (value.length() > 0x400) || (value != GetValue()) )
2033 {
2034 DoWriteText(value);
2035
2036 // for compatibility, don't move the cursor when doing SetValue()
2037 SetInsertionPoint(0);
2038 }
2039 else // same text
2040 {
2041 if ( flags & SetValue_SendEvent )
2042 {
2043 // still send an event for consistency
2044 SendTextUpdatedEvent();
2045 }
2046 }
2047
2048 // we should reset the modified flag even if the value didn't really change
2049
2050 // mark the control as being not dirty - we changed its text, not the
2051 // user
2052 DiscardEdits();
2053}
2054
2055void wxRichTextCtrl::WriteText(const wxString& value)
2056{
2057 DoWriteText(value);
2058}
2059
2060void wxRichTextCtrl::DoWriteText(const wxString& value, int flags)
2061{
2062 wxString valueUnix = wxTextFile::Translate(value, wxTextFileType_Unix);
2063
2064 GetBuffer().InsertTextWithUndo(m_caretPosition+1, valueUnix, this, wxRICHTEXT_INSERT_WITH_PREVIOUS_PARAGRAPH_STYLE);
2065
2066 if ( flags & SetValue_SendEvent )
2067 SendTextUpdatedEvent();
2068}
2069
2070void wxRichTextCtrl::AppendText(const wxString& text)
2071{
2072 SetInsertionPointEnd();
2073
2074 WriteText(text);
2075}
2076
2077/// Write an image at the current insertion point
2078bool wxRichTextCtrl::WriteImage(const wxImage& image, int bitmapType)
2079{
2080 wxRichTextImageBlock imageBlock;
2081
2082 wxImage image2 = image;
2083 if (imageBlock.MakeImageBlock(image2, bitmapType))
2084 return WriteImage(imageBlock);
2085
2086 return false;
2087}
2088
2089bool wxRichTextCtrl::WriteImage(const wxString& filename, int bitmapType)
2090{
2091 wxRichTextImageBlock imageBlock;
2092
2093 wxImage image;
2094 if (imageBlock.MakeImageBlock(filename, bitmapType, image, false))
2095 return WriteImage(imageBlock);
2096
2097 return false;
2098}
2099
2100bool wxRichTextCtrl::WriteImage(const wxRichTextImageBlock& imageBlock)
2101{
2102 return GetBuffer().InsertImageWithUndo(m_caretPosition+1, imageBlock, this);
2103}
2104
2105bool wxRichTextCtrl::WriteImage(const wxBitmap& bitmap, int bitmapType)
2106{
2107 if (bitmap.Ok())
2108 {
2109 wxRichTextImageBlock imageBlock;
2110
2111 wxImage image = bitmap.ConvertToImage();
2112 if (image.Ok() && imageBlock.MakeImageBlock(image, bitmapType))
2113 return WriteImage(imageBlock);
2114 }
2115
2116 return false;
2117}
2118
2119/// Insert a newline (actually paragraph) at the current insertion point.
2120bool wxRichTextCtrl::Newline()
2121{
2122 return GetBuffer().InsertNewlineWithUndo(m_caretPosition+1, this);
2123}
2124
2125/// Insert a line break at the current insertion point.
2126bool wxRichTextCtrl::LineBreak()
2127{
2128 wxString text;
2129 text = wxRichTextLineBreakChar;
2130 return GetBuffer().InsertTextWithUndo(m_caretPosition+1, text, this);
2131}
2132
2133// ----------------------------------------------------------------------------
2134// Clipboard operations
2135// ----------------------------------------------------------------------------
2136
2137void wxRichTextCtrl::Copy()
2138{
2139 if (CanCopy())
2140 {
2141 wxRichTextRange range = GetInternalSelectionRange();
2142 GetBuffer().CopyToClipboard(range);
2143 }
2144}
2145
2146void wxRichTextCtrl::Cut()
2147{
2148 if (CanCut())
2149 {
2150 wxRichTextRange range = GetInternalSelectionRange();
2151 GetBuffer().CopyToClipboard(range);
2152
2153 DeleteSelectedContent();
2154 LayoutContent();
2155 Refresh(false);
2156 }
2157}
2158
2159void wxRichTextCtrl::Paste()
2160{
2161 if (CanPaste())
2162 {
2163 BeginBatchUndo(_("Paste"));
2164
2165 long newPos = m_caretPosition;
2166 DeleteSelectedContent(& newPos);
2167
2168 GetBuffer().PasteFromClipboard(newPos);
2169
2170 EndBatchUndo();
2171 }
2172}
2173
2174void wxRichTextCtrl::DeleteSelection()
2175{
2176 if (CanDeleteSelection())
2177 {
2178 DeleteSelectedContent();
2179 }
2180}
2181
2182bool wxRichTextCtrl::HasSelection() const
2183{
2184 return m_selectionRange.GetStart() != -2 && m_selectionRange.GetEnd() != -2;
2185}
2186
2187bool wxRichTextCtrl::CanCopy() const
2188{
2189 // Can copy if there's a selection
2190 return HasSelection();
2191}
2192
2193bool wxRichTextCtrl::CanCut() const
2194{
2195 return HasSelection() && IsEditable();
2196}
2197
2198bool wxRichTextCtrl::CanPaste() const
2199{
2200 if ( !IsEditable() )
2201 return false;
2202
2203 return GetBuffer().CanPasteFromClipboard();
2204}
2205
2206bool wxRichTextCtrl::CanDeleteSelection() const
2207{
2208 return HasSelection() && IsEditable();
2209}
2210
2211
2212// ----------------------------------------------------------------------------
2213// Accessors
2214// ----------------------------------------------------------------------------
2215
2216void wxRichTextCtrl::SetEditable(bool editable)
2217{
2218 m_editable = editable;
2219}
2220
2221void wxRichTextCtrl::SetInsertionPoint(long pos)
2222{
2223 SelectNone();
2224
2225 m_caretPosition = pos - 1;
2226}
2227
2228void wxRichTextCtrl::SetInsertionPointEnd()
2229{
2230 long pos = GetLastPosition();
2231 SetInsertionPoint(pos);
2232}
2233
2234long wxRichTextCtrl::GetInsertionPoint() const
2235{
2236 return m_caretPosition+1;
2237}
2238
2239wxTextPos wxRichTextCtrl::GetLastPosition() const
2240{
2241 return GetBuffer().GetRange().GetEnd();
2242}
2243
2244// If the return values from and to are the same, there is no
2245// selection.
2246void wxRichTextCtrl::GetSelection(long* from, long* to) const
2247{
2248 *from = m_selectionRange.GetStart();
2249 *to = m_selectionRange.GetEnd();
2250 if ((*to) != -1 && (*to) != -2)
2251 (*to) ++;
2252}
2253
2254bool wxRichTextCtrl::IsEditable() const
2255{
2256 return m_editable;
2257}
2258
2259// ----------------------------------------------------------------------------
2260// selection
2261// ----------------------------------------------------------------------------
2262
2263void wxRichTextCtrl::SetSelection(long from, long to)
2264{
2265 // if from and to are both -1, it means (in wxWidgets) that all text should
2266 // be selected.
2267 if ( (from == -1) && (to == -1) )
2268 {
2269 from = 0;
2270 to = GetLastPosition()+1;
2271 }
2272
2273 DoSetSelection(from, to);
2274}
2275
2276void wxRichTextCtrl::DoSetSelection(long from, long to, bool WXUNUSED(scrollCaret))
2277{
2278 m_selectionAnchor = from;
2279 m_selectionRange.SetRange(from, to-1);
2280 if (from > -2)
2281 m_caretPosition = from-1;
2282
2283 Refresh(false);
2284 PositionCaret();
2285}
2286
2287// ----------------------------------------------------------------------------
2288// Editing
2289// ----------------------------------------------------------------------------
2290
2291void wxRichTextCtrl::Replace(long WXUNUSED(from), long WXUNUSED(to),
2292 const wxString& value)
2293{
2294 BeginBatchUndo(_("Replace"));
2295
2296 DeleteSelectedContent();
2297
2298 DoWriteText(value, SetValue_SelectionOnly);
2299
2300 EndBatchUndo();
2301}
2302
2303void wxRichTextCtrl::Remove(long from, long to)
2304{
2305 SelectNone();
2306
2307 GetBuffer().DeleteRangeWithUndo(wxRichTextRange(from, to), this);
2308
2309 LayoutContent();
2310 if (!IsFrozen())
2311 Refresh(false);
2312}
2313
2314bool wxRichTextCtrl::IsModified() const
2315{
2316 return m_buffer.IsModified();
2317}
2318
2319void wxRichTextCtrl::MarkDirty()
2320{
2321 m_buffer.Modify(true);
2322}
2323
2324void wxRichTextCtrl::DiscardEdits()
2325{
2326 m_caretPositionForDefaultStyle = -2;
2327 m_buffer.Modify(false);
2328 m_buffer.GetCommandProcessor()->ClearCommands();
2329}
2330
2331int wxRichTextCtrl::GetNumberOfLines() const
2332{
2333 return GetBuffer().GetParagraphCount();
2334}
2335
2336// ----------------------------------------------------------------------------
2337// Positions <-> coords
2338// ----------------------------------------------------------------------------
2339
2340long wxRichTextCtrl::XYToPosition(long x, long y) const
2341{
2342 return GetBuffer().XYToPosition(x, y);
2343}
2344
2345bool wxRichTextCtrl::PositionToXY(long pos, long *x, long *y) const
2346{
2347 return GetBuffer().PositionToXY(pos, x, y);
2348}
2349
2350// ----------------------------------------------------------------------------
2351//
2352// ----------------------------------------------------------------------------
2353
2354void wxRichTextCtrl::ShowPosition(long pos)
2355{
2356 if (!IsPositionVisible(pos))
2357 ScrollIntoView(pos-1, WXK_DOWN);
2358}
2359
2360int wxRichTextCtrl::GetLineLength(long lineNo) const
2361{
2362 return GetBuffer().GetParagraphLength(lineNo);
2363}
2364
2365wxString wxRichTextCtrl::GetLineText(long lineNo) const
2366{
2367 return GetBuffer().GetParagraphText(lineNo);
2368}
2369
2370// ----------------------------------------------------------------------------
2371// Undo/redo
2372// ----------------------------------------------------------------------------
2373
2374void wxRichTextCtrl::Undo()
2375{
2376 if (CanUndo())
2377 {
2378 GetCommandProcessor()->Undo();
2379 }
2380}
2381
2382void wxRichTextCtrl::Redo()
2383{
2384 if (CanRedo())
2385 {
2386 GetCommandProcessor()->Redo();
2387 }
2388}
2389
2390bool wxRichTextCtrl::CanUndo() const
2391{
2392 return GetCommandProcessor()->CanUndo();
2393}
2394
2395bool wxRichTextCtrl::CanRedo() const
2396{
2397 return GetCommandProcessor()->CanRedo();
2398}
2399
2400// ----------------------------------------------------------------------------
2401// implementation details
2402// ----------------------------------------------------------------------------
2403
2404void wxRichTextCtrl::Command(wxCommandEvent& event)
2405{
2406 SetValue(event.GetString());
2407 GetEventHandler()->ProcessEvent(event);
2408}
2409
2410void wxRichTextCtrl::OnDropFiles(wxDropFilesEvent& event)
2411{
2412 // By default, load the first file into the text window.
2413 if (event.GetNumberOfFiles() > 0)
2414 {
2415 LoadFile(event.GetFiles()[0]);
2416 }
2417}
2418
2419wxSize wxRichTextCtrl::DoGetBestSize() const
2420{
2421 return wxSize(10, 10);
2422}
2423
2424// ----------------------------------------------------------------------------
2425// standard handlers for standard edit menu events
2426// ----------------------------------------------------------------------------
2427
2428void wxRichTextCtrl::OnCut(wxCommandEvent& WXUNUSED(event))
2429{
2430 Cut();
2431}
2432
2433void wxRichTextCtrl::OnClear(wxCommandEvent& WXUNUSED(event))
2434{
2435 DeleteSelection();
2436}
2437
2438void wxRichTextCtrl::OnCopy(wxCommandEvent& WXUNUSED(event))
2439{
2440 Copy();
2441}
2442
2443void wxRichTextCtrl::OnPaste(wxCommandEvent& WXUNUSED(event))
2444{
2445 Paste();
2446}
2447
2448void wxRichTextCtrl::OnUndo(wxCommandEvent& WXUNUSED(event))
2449{
2450 Undo();
2451}
2452
2453void wxRichTextCtrl::OnRedo(wxCommandEvent& WXUNUSED(event))
2454{
2455 Redo();
2456}
2457
2458void wxRichTextCtrl::OnUpdateCut(wxUpdateUIEvent& event)
2459{
2460 event.Enable( CanCut() );
2461}
2462
2463void wxRichTextCtrl::OnUpdateCopy(wxUpdateUIEvent& event)
2464{
2465 event.Enable( CanCopy() );
2466}
2467
2468void wxRichTextCtrl::OnUpdateClear(wxUpdateUIEvent& event)
2469{
2470 event.Enable( CanDeleteSelection() );
2471}
2472
2473void wxRichTextCtrl::OnUpdatePaste(wxUpdateUIEvent& event)
2474{
2475 event.Enable( CanPaste() );
2476}
2477
2478void wxRichTextCtrl::OnUpdateUndo(wxUpdateUIEvent& event)
2479{
2480 event.Enable( CanUndo() );
2481 event.SetText( GetCommandProcessor()->GetUndoMenuLabel() );
2482}
2483
2484void wxRichTextCtrl::OnUpdateRedo(wxUpdateUIEvent& event)
2485{
2486 event.Enable( CanRedo() );
2487 event.SetText( GetCommandProcessor()->GetRedoMenuLabel() );
2488}
2489
2490void wxRichTextCtrl::OnSelectAll(wxCommandEvent& WXUNUSED(event))
2491{
2492 SelectAll();
2493}
2494
2495void wxRichTextCtrl::OnUpdateSelectAll(wxUpdateUIEvent& event)
2496{
2497 event.Enable(GetLastPosition() > 0);
2498}
2499
2500void wxRichTextCtrl::OnContextMenu(wxContextMenuEvent& WXUNUSED(event))
2501{
2502 if (!m_contextMenu)
2503 {
2504 m_contextMenu = new wxMenu;
2505 m_contextMenu->Append(wxID_UNDO, _("&Undo"));
2506 m_contextMenu->Append(wxID_REDO, _("&Redo"));
2507 m_contextMenu->AppendSeparator();
2508 m_contextMenu->Append(wxID_CUT, _("Cu&t"));
2509 m_contextMenu->Append(wxID_COPY, _("&Copy"));
2510 m_contextMenu->Append(wxID_PASTE, _("&Paste"));
2511 m_contextMenu->Append(wxID_CLEAR, _("&Delete"));
2512 m_contextMenu->AppendSeparator();
2513 m_contextMenu->Append(wxID_SELECTALL, _("Select &All"));
2514 }
2515 PopupMenu(m_contextMenu);
2516 return;
2517}
2518
2519bool wxRichTextCtrl::SetStyle(long start, long end, const wxTextAttrEx& style)
2520{
2521 return GetBuffer().SetStyle(wxRichTextRange(start, end-1), style);
2522}
2523
2524bool wxRichTextCtrl::SetStyle(long start, long end, const wxTextAttr& style)
2525{
2526 return GetBuffer().SetStyle(wxRichTextRange(start, end-1), wxTextAttrEx(style));
2527}
2528
2529bool wxRichTextCtrl::SetStyle(const wxRichTextRange& range, const wxRichTextAttr& style)
2530{
2531 return GetBuffer().SetStyle(range.ToInternal(), style);
2532}
2533
2534// extended style setting operation with flags including:
2535// wxRICHTEXT_SETSTYLE_WITH_UNDO, wxRICHTEXT_SETSTYLE_OPTIMIZE, wxRICHTEXT_SETSTYLE_PARAGRAPHS_ONLY.
2536// see richtextbuffer.h for more details.
2537bool wxRichTextCtrl::SetStyleEx(long start, long end, const wxTextAttrEx& style, int flags)
2538{
2539 return GetBuffer().SetStyle(wxRichTextRange(start, end-1), style, flags);
2540}
2541
2542bool wxRichTextCtrl::SetStyleEx(const wxRichTextRange& range, const wxTextAttrEx& style, int flags)
2543{
2544 return GetBuffer().SetStyle(range.ToInternal(), style, flags);
2545}
2546
2547bool wxRichTextCtrl::SetStyleEx(const wxRichTextRange& range, const wxRichTextAttr& style, int flags)
2548{
2549 return GetBuffer().SetStyle(range.ToInternal(), style, flags);
2550}
2551
2552bool wxRichTextCtrl::SetDefaultStyle(const wxTextAttrEx& style)
2553{
2554 return GetBuffer().SetDefaultStyle(style);
2555}
2556
2557bool wxRichTextCtrl::SetDefaultStyle(const wxTextAttr& style)
2558{
2559 return GetBuffer().SetDefaultStyle(wxTextAttrEx(style));
2560}
2561
2562const wxTextAttrEx& wxRichTextCtrl::GetDefaultStyleEx() const
2563{
2564 return GetBuffer().GetDefaultStyle();
2565}
2566
2567const wxTextAttr& wxRichTextCtrl::GetDefaultStyle() const
2568{
2569 return GetBuffer().GetDefaultStyle();
2570}
2571
2572bool wxRichTextCtrl::GetStyle(long position, wxTextAttr& style)
2573{
2574 wxTextAttrEx attr(style);
2575 if (GetBuffer().GetStyle(position, attr))
2576 {
2577 style = attr;
2578 return true;
2579 }
2580 else
2581 return false;
2582}
2583
2584bool wxRichTextCtrl::GetStyle(long position, wxTextAttrEx& style)
2585{
2586 return GetBuffer().GetStyle(position, style);
2587}
2588
2589bool wxRichTextCtrl::GetStyle(long position, wxRichTextAttr& style)
2590{
2591 return GetBuffer().GetStyle(position, style);
2592}
2593
2594// get the common set of styles for the range
2595bool wxRichTextCtrl::GetStyleForRange(const wxRichTextRange& range, wxRichTextAttr& style)
2596{
2597 wxTextAttrEx styleEx;
2598 if (GetBuffer().GetStyleForRange(range.ToInternal(), styleEx))
2599 {
2600 style = styleEx;
2601 return true;
2602 }
2603 else
2604 return false;
2605}
2606
2607bool wxRichTextCtrl::GetStyleForRange(const wxRichTextRange& range, wxTextAttrEx& style)
2608{
2609 return GetBuffer().GetStyleForRange(range.ToInternal(), style);
2610}
2611
2612/// Get the content (uncombined) attributes for this position.
2613
2614bool wxRichTextCtrl::GetUncombinedStyle(long position, wxTextAttr& style)
2615{
2616 wxTextAttrEx attr(style);
2617 if (GetBuffer().GetUncombinedStyle(position, attr))
2618 {
2619 style = attr;
2620 return true;
2621 }
2622 else
2623 return false;
2624}
2625
2626bool wxRichTextCtrl::GetUncombinedStyle(long position, wxTextAttrEx& style)
2627{
2628 return GetBuffer().GetUncombinedStyle(position, style);
2629}
2630
2631bool wxRichTextCtrl::GetUncombinedStyle(long position, wxRichTextAttr& style)
2632{
2633 return GetBuffer().GetUncombinedStyle(position, style);
2634}
2635
2636/// Set font, and also the buffer attributes
2637bool wxRichTextCtrl::SetFont(const wxFont& font)
2638{
2639 wxControl::SetFont(font);
2640
2641 wxTextAttrEx attr = GetBuffer().GetAttributes();
2642 attr.SetFont(font);
2643 GetBuffer().SetBasicStyle(attr);
2644
2645 GetBuffer().Invalidate(wxRICHTEXT_ALL);
2646 Refresh(false);
2647
2648 return true;
2649}
2650
2651/// Transform logical to physical
2652wxPoint wxRichTextCtrl::GetPhysicalPoint(const wxPoint& ptLogical) const
2653{
2654 wxPoint pt;
2655 CalcScrolledPosition(ptLogical.x, ptLogical.y, & pt.x, & pt.y);
2656
2657 return pt;
2658}
2659
2660/// Transform physical to logical
2661wxPoint wxRichTextCtrl::GetLogicalPoint(const wxPoint& ptPhysical) const
2662{
2663 wxPoint pt;
2664 CalcUnscrolledPosition(ptPhysical.x, ptPhysical.y, & pt.x, & pt.y);
2665
2666 return pt;
2667}
2668
2669/// Position the caret
2670void wxRichTextCtrl::PositionCaret()
2671{
2672 if (!GetCaret())
2673 return;
2674
2675 //wxLogDebug(wxT("PositionCaret"));
2676
2677 wxRect caretRect;
2678 if (GetCaretPositionForIndex(GetCaretPosition(), caretRect))
2679 {
2680 wxPoint originalPt = caretRect.GetPosition();
2681 wxPoint pt = GetPhysicalPoint(originalPt);
2682 if (GetCaret()->GetPosition() != pt)
2683 {
2684 GetCaret()->Move(pt);
2685 GetCaret()->SetSize(caretRect.GetSize());
2686 }
2687 }
2688}
2689
2690/// Get the caret height and position for the given character position
2691bool wxRichTextCtrl::GetCaretPositionForIndex(long position, wxRect& rect)
2692{
2693 wxClientDC dc(this);
2694 dc.SetFont(GetFont());
2695
2696 PrepareDC(dc);
2697
2698 wxPoint pt;
2699 int height = 0;
2700
2701 if (GetBuffer().FindPosition(dc, position, pt, & height, m_caretAtLineStart))
2702 {
2703 // Caret height can't be zero
2704 if (height == 0)
2705 height = dc.GetCharHeight();
2706
2707 rect = wxRect(pt, wxSize(wxRICHTEXT_DEFAULT_CARET_WIDTH, height));
2708 return true;
2709 }
2710
2711 return false;
2712}
2713
2714/// Gets the line for the visible caret position. If the caret is
2715/// shown at the very end of the line, it means the next character is actually
2716/// on the following line. So let's get the line we're expecting to find
2717/// if this is the case.
2718wxRichTextLine* wxRichTextCtrl::GetVisibleLineForCaretPosition(long caretPosition) const
2719{
2720 wxRichTextLine* line = GetBuffer().GetLineAtPosition(caretPosition, true);
2721 wxRichTextParagraph* para = GetBuffer().GetParagraphAtPosition(caretPosition, true);
2722 if (line)
2723 {
2724 wxRichTextRange lineRange = line->GetAbsoluteRange();
2725 if (caretPosition == lineRange.GetStart()-1 &&
2726 (para->GetRange().GetStart() != lineRange.GetStart()))
2727 {
2728 if (!m_caretAtLineStart)
2729 line = GetBuffer().GetLineAtPosition(caretPosition-1, true);
2730 }
2731 }
2732 return line;
2733}
2734
2735
2736/// Move the caret to the given character position
2737bool wxRichTextCtrl::MoveCaret(long pos, bool showAtLineStart)
2738{
2739 if (GetBuffer().GetDirty())
2740 LayoutContent();
2741
2742 if (pos <= GetBuffer().GetRange().GetEnd())
2743 {
2744 SetCaretPosition(pos, showAtLineStart);
2745
2746 PositionCaret();
2747
2748 return true;
2749 }
2750 else
2751 return false;
2752}
2753
2754/// Layout the buffer: which we must do before certain operations, such as
2755/// setting the caret position.
2756bool wxRichTextCtrl::LayoutContent(bool onlyVisibleRect)
2757{
2758 if (GetBuffer().GetDirty() || onlyVisibleRect)
2759 {
2760 wxRect availableSpace(GetClientSize());
2761 if (availableSpace.width == 0)
2762 availableSpace.width = 10;
2763 if (availableSpace.height == 0)
2764 availableSpace.height = 10;
2765
2766 int flags = wxRICHTEXT_FIXED_WIDTH|wxRICHTEXT_VARIABLE_HEIGHT;
2767 if (onlyVisibleRect)
2768 {
2769 flags |= wxRICHTEXT_LAYOUT_SPECIFIED_RECT;
2770 availableSpace.SetPosition(GetLogicalPoint(wxPoint(0, 0)));
2771 }
2772
2773 wxClientDC dc(this);
2774 dc.SetFont(GetFont());
2775
2776 PrepareDC(dc);
2777
2778 GetBuffer().Defragment();
2779 GetBuffer().UpdateRanges(); // If items were deleted, ranges need recalculation
2780 GetBuffer().Layout(dc, availableSpace, flags);
2781 GetBuffer().SetDirty(false);
2782
2783 if (!IsFrozen())
2784 SetupScrollbars();
2785 }
2786
2787 return true;
2788}
2789
2790/// Is all of the selection bold?
2791bool wxRichTextCtrl::IsSelectionBold()
2792{
2793 if (HasSelection())
2794 {
2795 wxRichTextAttr attr;
2796 wxRichTextRange range = GetSelectionRange();
2797 attr.SetFlags(wxTEXT_ATTR_FONT_WEIGHT);
2798 attr.SetFontWeight(wxBOLD);
2799
2800 return HasCharacterAttributes(range, attr);
2801 }
2802 else
2803 {
2804 // If no selection, then we need to combine current style with default style
2805 // to see what the effect would be if we started typing.
2806 wxRichTextAttr attr;
2807 attr.SetFlags(wxTEXT_ATTR_FONT_WEIGHT);
2808
2809 long pos = GetAdjustedCaretPosition(GetCaretPosition());
2810 if (GetStyle(pos, attr))
2811 {
2812 if (IsDefaultStyleShowing())
2813 wxRichTextApplyStyle(attr, GetDefaultStyleEx());
2814 return attr.GetFontWeight() == wxBOLD;
2815 }
2816 }
2817 return false;
2818}
2819
2820/// Is all of the selection italics?
2821bool wxRichTextCtrl::IsSelectionItalics()
2822{
2823 if (HasSelection())
2824 {
2825 wxRichTextRange range = GetSelectionRange();
2826 wxRichTextAttr attr;
2827 attr.SetFlags(wxTEXT_ATTR_FONT_ITALIC);
2828 attr.SetFontStyle(wxITALIC);
2829
2830 return HasCharacterAttributes(range, attr);
2831 }
2832 else
2833 {
2834 // If no selection, then we need to combine current style with default style
2835 // to see what the effect would be if we started typing.
2836 wxRichTextAttr attr;
2837 attr.SetFlags(wxTEXT_ATTR_FONT_ITALIC);
2838
2839 long pos = GetAdjustedCaretPosition(GetCaretPosition());
2840 if (GetStyle(pos, attr))
2841 {
2842 if (IsDefaultStyleShowing())
2843 wxRichTextApplyStyle(attr, GetDefaultStyleEx());
2844 return attr.GetFontStyle() == wxITALIC;
2845 }
2846 }
2847 return false;
2848}
2849
2850/// Is all of the selection underlined?
2851bool wxRichTextCtrl::IsSelectionUnderlined()
2852{
2853 if (HasSelection())
2854 {
2855 wxRichTextRange range = GetSelectionRange();
2856 wxRichTextAttr attr;
2857 attr.SetFlags(wxTEXT_ATTR_FONT_UNDERLINE);
2858 attr.SetFontUnderlined(true);
2859
2860 return HasCharacterAttributes(range, attr);
2861 }
2862 else
2863 {
2864 // If no selection, then we need to combine current style with default style
2865 // to see what the effect would be if we started typing.
2866 wxRichTextAttr attr;
2867 attr.SetFlags(wxTEXT_ATTR_FONT_UNDERLINE);
2868 long pos = GetAdjustedCaretPosition(GetCaretPosition());
2869
2870 if (GetStyle(pos, attr))
2871 {
2872 if (IsDefaultStyleShowing())
2873 wxRichTextApplyStyle(attr, GetDefaultStyleEx());
2874 return attr.GetFontUnderlined();
2875 }
2876 }
2877 return false;
2878}
2879
2880/// Apply bold to the selection
2881bool wxRichTextCtrl::ApplyBoldToSelection()
2882{
2883 wxRichTextAttr attr;
2884 attr.SetFlags(wxTEXT_ATTR_FONT_WEIGHT);
2885 attr.SetFontWeight(IsSelectionBold() ? wxNORMAL : wxBOLD);
2886
2887 if (HasSelection())
2888 return SetStyleEx(GetSelectionRange(), attr, wxRICHTEXT_SETSTYLE_WITH_UNDO|wxRICHTEXT_SETSTYLE_OPTIMIZE|wxRICHTEXT_SETSTYLE_CHARACTERS_ONLY);
2889 else
2890 SetAndShowDefaultStyle(attr);
2891 return true;
2892}
2893
2894/// Apply italic to the selection
2895bool wxRichTextCtrl::ApplyItalicToSelection()
2896{
2897 wxRichTextAttr attr;
2898 attr.SetFlags(wxTEXT_ATTR_FONT_ITALIC);
2899 attr.SetFontStyle(IsSelectionItalics() ? wxNORMAL : wxITALIC);
2900
2901 if (HasSelection())
2902 return SetStyleEx(GetSelectionRange(), attr, wxRICHTEXT_SETSTYLE_WITH_UNDO|wxRICHTEXT_SETSTYLE_OPTIMIZE|wxRICHTEXT_SETSTYLE_CHARACTERS_ONLY);
2903 else
2904 SetAndShowDefaultStyle(attr);
2905 return true;
2906}
2907
2908/// Apply underline to the selection
2909bool wxRichTextCtrl::ApplyUnderlineToSelection()
2910{
2911 wxRichTextAttr attr;
2912 attr.SetFlags(wxTEXT_ATTR_FONT_UNDERLINE);
2913 attr.SetFontUnderlined(!IsSelectionUnderlined());
2914
2915 if (HasSelection())
2916 return SetStyleEx(GetSelectionRange(), attr, wxRICHTEXT_SETSTYLE_WITH_UNDO|wxRICHTEXT_SETSTYLE_OPTIMIZE|wxRICHTEXT_SETSTYLE_CHARACTERS_ONLY);
2917 else
2918 SetAndShowDefaultStyle(attr);
2919 return true;
2920}
2921
2922/// Is all of the selection aligned according to the specified flag?
2923bool wxRichTextCtrl::IsSelectionAligned(wxTextAttrAlignment alignment)
2924{
2925 wxRichTextRange range;
2926 if (HasSelection())
2927 range = GetSelectionRange();
2928 else
2929 range = wxRichTextRange(GetCaretPosition()+1, GetCaretPosition()+2);
2930
2931 wxRichTextAttr attr;
2932 attr.SetAlignment(alignment);
2933
2934 return HasParagraphAttributes(range, attr);
2935}
2936
2937/// Apply alignment to the selection
2938bool wxRichTextCtrl::ApplyAlignmentToSelection(wxTextAttrAlignment alignment)
2939{
2940 wxRichTextAttr attr;
2941 attr.SetAlignment(alignment);
2942 if (HasSelection())
2943 return SetStyle(GetSelectionRange(), attr);
2944 else
2945 {
2946 wxRichTextParagraph* para = GetBuffer().GetParagraphAtPosition(GetCaretPosition()+1);
2947 if (para)
2948 return SetStyleEx(para->GetRange().FromInternal(), attr, wxRICHTEXT_SETSTYLE_WITH_UNDO|wxRICHTEXT_SETSTYLE_OPTIMIZE|wxRICHTEXT_SETSTYLE_PARAGRAPHS_ONLY);
2949 }
2950 return true;
2951}
2952
2953/// Apply a named style to the selection
2954bool wxRichTextCtrl::ApplyStyle(wxRichTextStyleDefinition* def)
2955{
2956 // Flags are defined within each definition, so only certain
2957 // attributes are applied.
2958 wxRichTextAttr attr(GetStyleSheet() ? def->GetStyleMergedWithBase(GetStyleSheet()) : def->GetStyle());
2959
2960 int flags = wxRICHTEXT_SETSTYLE_WITH_UNDO|wxRICHTEXT_SETSTYLE_OPTIMIZE;
2961
2962 if (def->IsKindOf(CLASSINFO(wxRichTextListStyleDefinition)))
2963 {
2964 flags |= wxRICHTEXT_SETSTYLE_PARAGRAPHS_ONLY;
2965
2966 wxRichTextRange range;
2967
2968 if (HasSelection())
2969 range = GetSelectionRange();
2970 else
2971 {
2972 long pos = GetAdjustedCaretPosition(GetCaretPosition());
2973 range = wxRichTextRange(pos, pos+1);
2974 }
2975
2976 return SetListStyle(range, (wxRichTextListStyleDefinition*) def, flags);
2977 }
2978
2979 // Make sure the attr has the style name
2980 if (def->IsKindOf(CLASSINFO(wxRichTextParagraphStyleDefinition)))
2981 {
2982 attr.SetParagraphStyleName(def->GetName());
2983
2984 // If applying a paragraph style, we only want the paragraph nodes to adopt these
2985 // attributes, and not the leaf nodes. This will allow the content (e.g. text)
2986 // to change its style independently.
2987 flags |= wxRICHTEXT_SETSTYLE_PARAGRAPHS_ONLY;
2988 }
2989 else
2990 attr.SetCharacterStyleName(def->GetName());
2991
2992 if (HasSelection())
2993 return SetStyleEx(GetSelectionRange(), attr, flags);
2994 else
2995 {
2996 SetAndShowDefaultStyle(attr);
2997 return true;
2998 }
2999}
3000
3001/// Apply the style sheet to the buffer, for example if the styles have changed.
3002bool wxRichTextCtrl::ApplyStyleSheet(wxRichTextStyleSheet* styleSheet)
3003{
3004 if (!styleSheet)
3005 styleSheet = GetBuffer().GetStyleSheet();
3006 if (!styleSheet)
3007 return false;
3008
3009 if (GetBuffer().ApplyStyleSheet(styleSheet))
3010 {
3011 GetBuffer().Invalidate(wxRICHTEXT_ALL);
3012 Refresh(false);
3013 return true;
3014 }
3015 else
3016 return false;
3017}
3018
3019/// Sets the default style to the style under the cursor
3020bool wxRichTextCtrl::SetDefaultStyleToCursorStyle()
3021{
3022 wxTextAttrEx attr;
3023 attr.SetFlags(wxTEXT_ATTR_CHARACTER);
3024
3025 // If at the start of a paragraph, use the next position.
3026 long pos = GetAdjustedCaretPosition(GetCaretPosition());
3027
3028 if (GetUncombinedStyle(pos, attr))
3029 {
3030 SetDefaultStyle(attr);
3031 return true;
3032 }
3033
3034 return false;
3035}
3036
3037/// Returns the first visible position in the current view
3038long wxRichTextCtrl::GetFirstVisiblePosition() const
3039{
3040 wxRichTextLine* line = GetBuffer().GetLineAtYPosition(GetLogicalPoint(wxPoint(0, 0)).y);
3041 if (line)
3042 return line->GetAbsoluteRange().GetStart();
3043 else
3044 return 0;
3045}
3046
3047/// Get the first visible point in the window
3048wxPoint wxRichTextCtrl::GetFirstVisiblePoint() const
3049{
3050 int ppuX, ppuY;
3051 int startXUnits, startYUnits;
3052
3053 GetScrollPixelsPerUnit(& ppuX, & ppuY);
3054 GetViewStart(& startXUnits, & startYUnits);
3055
3056 return wxPoint(startXUnits * ppuX, startYUnits * ppuY);
3057}
3058
3059/// The adjusted caret position is the character position adjusted to take
3060/// into account whether we're at the start of a paragraph, in which case
3061/// style information should be taken from the next position, not current one.
3062long wxRichTextCtrl::GetAdjustedCaretPosition(long caretPos) const
3063{
3064 wxRichTextParagraph* para = GetBuffer().GetParagraphAtPosition(caretPos+1);
3065
3066 if (para && (caretPos+1 == para->GetRange().GetStart()))
3067 caretPos ++;
3068 return caretPos;
3069}
3070
3071/// Get/set the selection range in character positions. -1, -1 means no selection.
3072/// The range is in API convention, i.e. a single character selection is denoted
3073/// by (n, n+1)
3074wxRichTextRange wxRichTextCtrl::GetSelectionRange() const
3075{
3076 wxRichTextRange range = GetInternalSelectionRange();
3077 if (range != wxRichTextRange(-2,-2) && range != wxRichTextRange(-1,-1))
3078 range.SetEnd(range.GetEnd() + 1);
3079 return range;
3080}
3081
3082void wxRichTextCtrl::SetSelectionRange(const wxRichTextRange& range)
3083{
3084 wxRichTextRange range1(range);
3085 if (range1 != wxRichTextRange(-2,-2) && range1 != wxRichTextRange(-1,-1) )
3086 range1.SetEnd(range1.GetEnd() - 1);
3087
3088 wxASSERT( range1.GetStart() > range1.GetEnd() );
3089
3090 SetInternalSelectionRange(range1);
3091}
3092
3093/// Set list style
3094bool wxRichTextCtrl::SetListStyle(const wxRichTextRange& range, wxRichTextListStyleDefinition* def, int flags, int startFrom, int specifiedLevel)
3095{
3096 return GetBuffer().SetListStyle(range.ToInternal(), def, flags, startFrom, specifiedLevel);
3097}
3098
3099bool wxRichTextCtrl::SetListStyle(const wxRichTextRange& range, const wxString& defName, int flags, int startFrom, int specifiedLevel)
3100{
3101 return GetBuffer().SetListStyle(range.ToInternal(), defName, flags, startFrom, specifiedLevel);
3102}
3103
3104/// Clear list for given range
3105bool wxRichTextCtrl::ClearListStyle(const wxRichTextRange& range, int flags)
3106{
3107 return GetBuffer().ClearListStyle(range.ToInternal(), flags);
3108}
3109
3110/// Number/renumber any list elements in the given range
3111bool wxRichTextCtrl::NumberList(const wxRichTextRange& range, wxRichTextListStyleDefinition* def, int flags, int startFrom, int specifiedLevel)
3112{
3113 return GetBuffer().NumberList(range.ToInternal(), def, flags, startFrom, specifiedLevel);
3114}
3115
3116bool wxRichTextCtrl::NumberList(const wxRichTextRange& range, const wxString& defName, int flags, int startFrom, int specifiedLevel)
3117{
3118 return GetBuffer().NumberList(range.ToInternal(), defName, flags, startFrom, specifiedLevel);
3119}
3120
3121/// Promote the list items within the given range. promoteBy can be a positive or negative number, e.g. 1 or -1
3122bool wxRichTextCtrl::PromoteList(int promoteBy, const wxRichTextRange& range, wxRichTextListStyleDefinition* def, int flags, int specifiedLevel)
3123{
3124 return GetBuffer().PromoteList(promoteBy, range.ToInternal(), def, flags, specifiedLevel);
3125}
3126
3127bool wxRichTextCtrl::PromoteList(int promoteBy, const wxRichTextRange& range, const wxString& defName, int flags, int specifiedLevel)
3128{
3129 return GetBuffer().PromoteList(promoteBy, range.ToInternal(), defName, flags, specifiedLevel);
3130}
3131
3132/// Deletes the content in the given range
3133bool wxRichTextCtrl::Delete(const wxRichTextRange& range)
3134{
3135 return GetBuffer().DeleteRangeWithUndo(range.ToInternal(), this);
3136}
3137
3138const wxArrayString& wxRichTextCtrl::GetAvailableFontNames()
3139{
3140 if (sm_availableFontNames.GetCount() == 0)
3141 {
3142 sm_availableFontNames = wxFontEnumerator::GetFacenames();
3143 sm_availableFontNames.Sort();
3144 }
3145 return sm_availableFontNames;
3146}
3147
3148void wxRichTextCtrl::ClearAvailableFontNames()
3149{
3150 sm_availableFontNames.Clear();
3151}
3152
3153#endif
3154 // wxUSE_RICHTEXT
wxWidgets (Impactor)