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Create a text measuring context until a real context is assigned, this allows things...
[wxWidgets.git] / src / richtext / richtextctrl.cpp
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/timer.h"
30 #include "wx/textfile.h"
31 #include "wx/ffile.h"
32 #include "wx/filename.h"
33 #include "wx/dcbuffer.h"
34 #include "wx/arrimpl.cpp"
35 #include "wx/fontenum.h"
36 #include "wx/accel.h"
37
38 // DLL options compatibility check:
39 #include "wx/app.h"
40 WX_CHECK_BUILD_OPTIONS("wxRichTextCtrl")
41
42 wxDEFINE_EVENT( wxEVT_COMMAND_RICHTEXT_LEFT_CLICK, wxRichTextEvent );
43 wxDEFINE_EVENT( wxEVT_COMMAND_RICHTEXT_MIDDLE_CLICK, wxRichTextEvent );
44 wxDEFINE_EVENT( wxEVT_COMMAND_RICHTEXT_RIGHT_CLICK, wxRichTextEvent );
45 wxDEFINE_EVENT( wxEVT_COMMAND_RICHTEXT_LEFT_DCLICK, wxRichTextEvent );
46 wxDEFINE_EVENT( wxEVT_COMMAND_RICHTEXT_RETURN, wxRichTextEvent );
47 wxDEFINE_EVENT( wxEVT_COMMAND_RICHTEXT_CHARACTER, wxRichTextEvent );
48 wxDEFINE_EVENT( wxEVT_COMMAND_RICHTEXT_DELETE, wxRichTextEvent );
49
50 wxDEFINE_EVENT( wxEVT_COMMAND_RICHTEXT_STYLESHEET_REPLACING, wxRichTextEvent );
51 wxDEFINE_EVENT( wxEVT_COMMAND_RICHTEXT_STYLESHEET_REPLACED, wxRichTextEvent );
52 wxDEFINE_EVENT( wxEVT_COMMAND_RICHTEXT_STYLESHEET_CHANGING, wxRichTextEvent );
53 wxDEFINE_EVENT( wxEVT_COMMAND_RICHTEXT_STYLESHEET_CHANGED, wxRichTextEvent );
54
55 wxDEFINE_EVENT( wxEVT_COMMAND_RICHTEXT_CONTENT_INSERTED, wxRichTextEvent );
56 wxDEFINE_EVENT( wxEVT_COMMAND_RICHTEXT_CONTENT_DELETED, wxRichTextEvent );
57 wxDEFINE_EVENT( wxEVT_COMMAND_RICHTEXT_STYLE_CHANGED, wxRichTextEvent );
58 wxDEFINE_EVENT( wxEVT_COMMAND_RICHTEXT_SELECTION_CHANGED, wxRichTextEvent );
59 wxDEFINE_EVENT( wxEVT_COMMAND_RICHTEXT_BUFFER_RESET, wxRichTextEvent );
60
61 #if wxRICHTEXT_USE_OWN_CARET
62
63 /*!
64 * wxRichTextCaret
65 *
66 * This implements a non-flashing cursor in case there
67 * are platform-specific problems with the generic caret.
68 * wxRICHTEXT_USE_OWN_CARET is set in richtextbuffer.h.
69 */
70
71 class wxRichTextCaret;
72 class wxRichTextCaretTimer: public wxTimer
73 {
74 public:
75 wxRichTextCaretTimer(wxRichTextCaret* caret)
76 {
77 m_caret = caret;
78 }
79 virtual void Notify();
80 wxRichTextCaret* m_caret;
81 };
82
83 class wxRichTextCaret: public wxCaret
84 {
85 public:
86 // ctors
87 // -----
88 // default - use Create()
89 wxRichTextCaret(): m_timer(this) { Init(); }
90 // creates a block caret associated with the given window
91 wxRichTextCaret(wxRichTextCtrl *window, int width, int height)
92 : wxCaret(window, width, height), m_timer(this) { Init(); m_richTextCtrl = window; }
93 wxRichTextCaret(wxRichTextCtrl *window, const wxSize& size)
94 : wxCaret(window, size), m_timer(this) { Init(); m_richTextCtrl = window; }
95
96 virtual ~wxRichTextCaret();
97
98 // implementation
99 // --------------
100
101 // called by wxWindow (not using the event tables)
102 virtual void OnSetFocus();
103 virtual void OnKillFocus();
104
105 // draw the caret on the given DC
106 void DoDraw(wxDC *dc);
107
108 // get the visible count
109 int GetVisibleCount() const { return m_countVisible; }
110
111 // delay repositioning
112 bool GetNeedsUpdate() const { return m_needsUpdate; }
113 void SetNeedsUpdate(bool needsUpdate = true ) { m_needsUpdate = needsUpdate; }
114
115 void Notify();
116
117 protected:
118 virtual void DoShow();
119 virtual void DoHide();
120 virtual void DoMove();
121 virtual void DoSize();
122
123 // refresh the caret
124 void Refresh();
125
126 private:
127 void Init();
128
129 int m_xOld,
130 m_yOld;
131 bool m_hasFocus; // true => our window has focus
132 bool m_needsUpdate; // must be repositioned
133 bool m_flashOn;
134 wxRichTextCaretTimer m_timer;
135 wxRichTextCtrl* m_richTextCtrl;
136 };
137 #endif
138
139 IMPLEMENT_DYNAMIC_CLASS( wxRichTextCtrl, wxTextCtrlBase )
140
141 IMPLEMENT_DYNAMIC_CLASS( wxRichTextEvent, wxNotifyEvent )
142
143 BEGIN_EVENT_TABLE( wxRichTextCtrl, wxTextCtrlBase )
144 EVT_PAINT(wxRichTextCtrl::OnPaint)
145 EVT_ERASE_BACKGROUND(wxRichTextCtrl::OnEraseBackground)
146 EVT_IDLE(wxRichTextCtrl::OnIdle)
147 EVT_SCROLLWIN(wxRichTextCtrl::OnScroll)
148 EVT_LEFT_DOWN(wxRichTextCtrl::OnLeftClick)
149 EVT_MOTION(wxRichTextCtrl::OnMoveMouse)
150 EVT_LEFT_UP(wxRichTextCtrl::OnLeftUp)
151 EVT_RIGHT_DOWN(wxRichTextCtrl::OnRightClick)
152 EVT_MIDDLE_DOWN(wxRichTextCtrl::OnMiddleClick)
153 EVT_LEFT_DCLICK(wxRichTextCtrl::OnLeftDClick)
154 EVT_CHAR(wxRichTextCtrl::OnChar)
155 EVT_KEY_DOWN(wxRichTextCtrl::OnChar)
156 EVT_SIZE(wxRichTextCtrl::OnSize)
157 EVT_SET_FOCUS(wxRichTextCtrl::OnSetFocus)
158 EVT_KILL_FOCUS(wxRichTextCtrl::OnKillFocus)
159 EVT_MOUSE_CAPTURE_LOST(wxRichTextCtrl::OnCaptureLost)
160 EVT_CONTEXT_MENU(wxRichTextCtrl::OnContextMenu)
161 EVT_SYS_COLOUR_CHANGED(wxRichTextCtrl::OnSysColourChanged)
162
163 EVT_MENU(wxID_UNDO, wxRichTextCtrl::OnUndo)
164 EVT_UPDATE_UI(wxID_UNDO, wxRichTextCtrl::OnUpdateUndo)
165
166 EVT_MENU(wxID_REDO, wxRichTextCtrl::OnRedo)
167 EVT_UPDATE_UI(wxID_REDO, wxRichTextCtrl::OnUpdateRedo)
168
169 EVT_MENU(wxID_COPY, wxRichTextCtrl::OnCopy)
170 EVT_UPDATE_UI(wxID_COPY, wxRichTextCtrl::OnUpdateCopy)
171
172 EVT_MENU(wxID_PASTE, wxRichTextCtrl::OnPaste)
173 EVT_UPDATE_UI(wxID_PASTE, wxRichTextCtrl::OnUpdatePaste)
174
175 EVT_MENU(wxID_CUT, wxRichTextCtrl::OnCut)
176 EVT_UPDATE_UI(wxID_CUT, wxRichTextCtrl::OnUpdateCut)
177
178 EVT_MENU(wxID_CLEAR, wxRichTextCtrl::OnClear)
179 EVT_UPDATE_UI(wxID_CLEAR, wxRichTextCtrl::OnUpdateClear)
180
181 EVT_MENU(wxID_SELECTALL, wxRichTextCtrl::OnSelectAll)
182 EVT_UPDATE_UI(wxID_SELECTALL, wxRichTextCtrl::OnUpdateSelectAll)
183 END_EVENT_TABLE()
184
185 /*!
186 * wxRichTextCtrl
187 */
188
189 wxArrayString wxRichTextCtrl::sm_availableFontNames;
190
191 wxRichTextCtrl::wxRichTextCtrl()
192 : wxScrollHelper(this)
193 {
194 Init();
195 }
196
197 wxRichTextCtrl::wxRichTextCtrl(wxWindow* parent,
198 wxWindowID id,
199 const wxString& value,
200 const wxPoint& pos,
201 const wxSize& size,
202 long style,
203 const wxValidator& validator,
204 const wxString& name)
205 : wxScrollHelper(this)
206 {
207 Init();
208 Create(parent, id, value, pos, size, style, validator, name);
209 }
210
211 /// Creation
212 bool wxRichTextCtrl::Create( wxWindow* parent, wxWindowID id, const wxString& value, const wxPoint& pos, const wxSize& size, long style,
213 const wxValidator& validator, const wxString& name)
214 {
215 style |= wxVSCROLL;
216
217 if (!wxTextCtrlBase::Create(parent, id, pos, size,
218 style|wxFULL_REPAINT_ON_RESIZE,
219 validator, name))
220 return false;
221
222 if (!GetFont().Ok())
223 {
224 SetFont(wxSystemSettings::GetFont(wxSYS_DEFAULT_GUI_FONT));
225 }
226
227 // No physical scrolling, so we can preserve margins
228 EnableScrolling(false, false);
229
230 if (style & wxTE_READONLY)
231 SetEditable(false);
232
233 // The base attributes must all have default values
234 wxTextAttr attributes;
235 attributes.SetFont(GetFont());
236 attributes.SetTextColour(wxSystemSettings::GetColour(wxSYS_COLOUR_WINDOWTEXT));
237 attributes.SetAlignment(wxTEXT_ALIGNMENT_LEFT);
238 attributes.SetLineSpacing(10);
239 attributes.SetParagraphSpacingAfter(10);
240 attributes.SetParagraphSpacingBefore(0);
241
242 SetBasicStyle(attributes);
243
244 // The default attributes will be merged with base attributes, so
245 // can be empty to begin with
246 wxTextAttr defaultAttributes;
247 SetDefaultStyle(defaultAttributes);
248
249 SetBackgroundColour(wxSystemSettings::GetColour(wxSYS_COLOUR_WINDOW));
250 SetBackgroundStyle(wxBG_STYLE_CUSTOM);
251
252 GetBuffer().Reset();
253 GetBuffer().SetRichTextCtrl(this);
254
255 #if wxRICHTEXT_USE_OWN_CARET
256 SetCaret(new wxRichTextCaret(this, wxRICHTEXT_DEFAULT_CARET_WIDTH, 16));
257 #else
258 SetCaret(new wxCaret(this, wxRICHTEXT_DEFAULT_CARET_WIDTH, 16));
259 #endif
260
261 // Tell the sizers to use the given or best size
262 SetInitialSize(size);
263
264 #if wxRICHTEXT_BUFFERED_PAINTING
265 // Create a buffer
266 RecreateBuffer(size);
267 #endif
268
269 m_textCursor = wxCursor(wxCURSOR_IBEAM);
270 m_urlCursor = wxCursor(wxCURSOR_HAND);
271
272 SetCursor(m_textCursor);
273
274 if (!value.IsEmpty())
275 SetValue(value);
276
277 GetBuffer().AddEventHandler(this);
278
279 // Accelerators
280 wxAcceleratorEntry entries[6];
281
282 entries[0].Set(wxACCEL_CMD, (int) 'C', wxID_COPY);
283 entries[1].Set(wxACCEL_CMD, (int) 'X', wxID_CUT);
284 entries[2].Set(wxACCEL_CMD, (int) 'V', wxID_PASTE);
285 entries[3].Set(wxACCEL_CMD, (int) 'A', wxID_SELECTALL);
286 entries[4].Set(wxACCEL_CMD, (int) 'Z', wxID_UNDO);
287 entries[5].Set(wxACCEL_CMD, (int) 'Y', wxID_REDO);
288
289 wxAcceleratorTable accel(6, entries);
290 SetAcceleratorTable(accel);
291
292 m_contextMenu = new wxMenu;
293 m_contextMenu->Append(wxID_UNDO, _("&Undo"));
294 m_contextMenu->Append(wxID_REDO, _("&Redo"));
295 m_contextMenu->AppendSeparator();
296 m_contextMenu->Append(wxID_CUT, _("Cu&t"));
297 m_contextMenu->Append(wxID_COPY, _("&Copy"));
298 m_contextMenu->Append(wxID_PASTE, _("&Paste"));
299 m_contextMenu->Append(wxID_CLEAR, _("&Delete"));
300 m_contextMenu->AppendSeparator();
301 m_contextMenu->Append(wxID_SELECTALL, _("Select &All"));
302
303 return true;
304 }
305
306 wxRichTextCtrl::~wxRichTextCtrl()
307 {
308 GetBuffer().RemoveEventHandler(this);
309
310 delete m_contextMenu;
311 }
312
313 /// Member initialisation
314 void wxRichTextCtrl::Init()
315 {
316 m_contextMenu = NULL;
317 m_caret = NULL;
318 m_caretPosition = -1;
319 m_selectionRange.SetRange(-2, -2);
320 m_selectionAnchor = -2;
321 m_editable = true;
322 m_caretAtLineStart = false;
323 m_dragging = false;
324 m_fullLayoutRequired = false;
325 m_fullLayoutTime = 0;
326 m_fullLayoutSavedPosition = 0;
327 m_delayedLayoutThreshold = wxRICHTEXT_DEFAULT_DELAYED_LAYOUT_THRESHOLD;
328 m_caretPositionForDefaultStyle = -2;
329 }
330
331 void wxRichTextCtrl::DoThaw()
332 {
333 if (GetBuffer().GetDirty())
334 LayoutContent();
335 else
336 SetupScrollbars();
337
338 wxWindow::DoThaw();
339 }
340
341 /// Clear all text
342 void wxRichTextCtrl::Clear()
343 {
344 m_buffer.ResetAndClearCommands();
345 m_buffer.SetDirty(true);
346 m_caretPosition = -1;
347 m_caretPositionForDefaultStyle = -2;
348 m_caretAtLineStart = false;
349 m_selectionRange.SetRange(-2, -2);
350
351 Scroll(0,0);
352
353 if (!IsFrozen())
354 {
355 LayoutContent();
356 Refresh(false);
357 }
358
359 wxTextCtrl::SendTextUpdatedEvent(this);
360 }
361
362 /// Painting
363 void wxRichTextCtrl::OnPaint(wxPaintEvent& WXUNUSED(event))
364 {
365 #if !wxRICHTEXT_USE_OWN_CARET
366 if (GetCaret() && !IsFrozen())
367 GetCaret()->Hide();
368 #endif
369
370 {
371 #if wxRICHTEXT_BUFFERED_PAINTING
372 wxBufferedPaintDC dc(this, m_bufferBitmap);
373 #else
374 wxPaintDC dc(this);
375 #endif
376
377 if (IsFrozen())
378 return;
379
380 PrepareDC(dc);
381
382 dc.SetFont(GetFont());
383
384 // Paint the background
385 PaintBackground(dc);
386
387 // wxRect drawingArea(GetLogicalPoint(wxPoint(0, 0)), GetClientSize());
388
389 wxRect drawingArea(GetUpdateRegion().GetBox());
390 drawingArea.SetPosition(GetLogicalPoint(drawingArea.GetPosition()));
391
392 wxRect availableSpace(GetClientSize());
393 if (GetBuffer().GetDirty())
394 {
395 GetBuffer().Layout(dc, availableSpace, wxRICHTEXT_FIXED_WIDTH|wxRICHTEXT_VARIABLE_HEIGHT);
396 GetBuffer().SetDirty(false);
397 SetupScrollbars();
398 }
399
400 wxRect clipRect(availableSpace);
401 clipRect.x += GetBuffer().GetLeftMargin();
402 clipRect.y += GetBuffer().GetTopMargin();
403 clipRect.width -= (GetBuffer().GetLeftMargin() + GetBuffer().GetRightMargin());
404 clipRect.height -= (GetBuffer().GetTopMargin() + GetBuffer().GetBottomMargin());
405 clipRect.SetPosition(GetLogicalPoint(clipRect.GetPosition()));
406 dc.SetClippingRegion(clipRect);
407
408 GetBuffer().Draw(dc, GetBuffer().GetRange(), GetInternalSelectionRange(), drawingArea, 0 /* descent */, 0 /* flags */);
409
410 dc.DestroyClippingRegion();
411
412 #if wxRICHTEXT_USE_OWN_CARET
413 if (GetCaret()->IsVisible())
414 {
415 ((wxRichTextCaret*) GetCaret())->DoDraw(& dc);
416 }
417 #endif
418 }
419
420 #if !wxRICHTEXT_USE_OWN_CARET
421 if (GetCaret())
422 GetCaret()->Show();
423 PositionCaret();
424 #endif
425 }
426
427 // Empty implementation, to prevent flicker
428 void wxRichTextCtrl::OnEraseBackground(wxEraseEvent& WXUNUSED(event))
429 {
430 }
431
432 void wxRichTextCtrl::OnSetFocus(wxFocusEvent& WXUNUSED(event))
433 {
434 if (GetCaret())
435 {
436 #if !wxRICHTEXT_USE_OWN_CARET
437 PositionCaret();
438 #endif
439 GetCaret()->Show();
440 }
441
442 #if defined(__WXGTK__) && !wxRICHTEXT_USE_OWN_CARET
443 // Work around dropouts when control is focused
444 if (!IsFrozen())
445 {
446 Refresh(false);
447 }
448 #endif
449 }
450
451 void wxRichTextCtrl::OnKillFocus(wxFocusEvent& WXUNUSED(event))
452 {
453 if (GetCaret())
454 GetCaret()->Hide();
455
456 #if defined(__WXGTK__) && !wxRICHTEXT_USE_OWN_CARET
457 // Work around dropouts when control is focused
458 if (!IsFrozen())
459 {
460 Refresh(false);
461 }
462 #endif
463 }
464
465 void wxRichTextCtrl::OnCaptureLost(wxMouseCaptureLostEvent& WXUNUSED(event))
466 {
467 m_dragging = false;
468 }
469
470 /// Left-click
471 void wxRichTextCtrl::OnLeftClick(wxMouseEvent& event)
472 {
473 SetFocus();
474
475 wxClientDC dc(this);
476 PrepareDC(dc);
477 dc.SetFont(GetFont());
478
479 long position = 0;
480 int hit = GetBuffer().HitTest(dc, event.GetLogicalPosition(dc), position);
481
482 if (hit != wxRICHTEXT_HITTEST_NONE)
483 {
484 m_dragStart = event.GetLogicalPosition(dc);
485 m_dragging = true;
486 CaptureMouse();
487
488 bool caretAtLineStart = false;
489
490 if (hit & wxRICHTEXT_HITTEST_BEFORE)
491 {
492 // If we're at the start of a line (but not first in para)
493 // then we should keep the caret showing at the start of the line
494 // by showing the m_caretAtLineStart flag.
495 wxRichTextParagraph* para = GetBuffer().GetParagraphAtPosition(position);
496 wxRichTextLine* line = GetBuffer().GetLineAtPosition(position);
497
498 if (line && para && line->GetAbsoluteRange().GetStart() == position && para->GetRange().GetStart() != position)
499 caretAtLineStart = true;
500 position --;
501 }
502
503 long oldCaretPos = m_caretPosition;
504
505 MoveCaret(position, caretAtLineStart);
506 SetDefaultStyleToCursorStyle();
507
508 if (event.ShiftDown())
509 {
510 if (m_selectionRange.GetStart() == -2)
511 ExtendSelection(oldCaretPos, m_caretPosition, wxRICHTEXT_SHIFT_DOWN);
512 else
513 ExtendSelection(m_caretPosition, m_caretPosition, wxRICHTEXT_SHIFT_DOWN);
514 }
515 else
516 SelectNone();
517 }
518
519 event.Skip();
520 }
521
522 /// Left-up
523 void wxRichTextCtrl::OnLeftUp(wxMouseEvent& event)
524 {
525 if (m_dragging)
526 {
527 m_dragging = false;
528 if (GetCapture() == this)
529 ReleaseMouse();
530
531 // See if we clicked on a URL
532 wxClientDC dc(this);
533 PrepareDC(dc);
534 dc.SetFont(GetFont());
535
536 long position = 0;
537 wxPoint logicalPt = event.GetLogicalPosition(dc);
538 int hit = GetBuffer().HitTest(dc, logicalPt, position);
539
540 if ((hit != wxRICHTEXT_HITTEST_NONE) && !(hit & wxRICHTEXT_HITTEST_OUTSIDE))
541 {
542 wxRichTextEvent cmdEvent(
543 wxEVT_COMMAND_RICHTEXT_LEFT_CLICK,
544 GetId());
545 cmdEvent.SetEventObject(this);
546 cmdEvent.SetPosition(m_caretPosition+1);
547
548 if (!GetEventHandler()->ProcessEvent(cmdEvent))
549 {
550 wxTextAttr attr;
551 if (GetStyle(position, attr))
552 {
553 if (attr.HasFlag(wxTEXT_ATTR_URL))
554 {
555 wxString urlTarget = attr.GetURL();
556 if (!urlTarget.IsEmpty())
557 {
558 wxMouseEvent mouseEvent(event);
559
560 long startPos = 0, endPos = 0;
561 wxRichTextObject* obj = GetBuffer().GetLeafObjectAtPosition(position);
562 if (obj)
563 {
564 startPos = obj->GetRange().GetStart();
565 endPos = obj->GetRange().GetEnd();
566 }
567
568 wxTextUrlEvent urlEvent(GetId(), mouseEvent, startPos, endPos);
569 InitCommandEvent(urlEvent);
570
571 urlEvent.SetString(urlTarget);
572
573 GetEventHandler()->ProcessEvent(urlEvent);
574 }
575 }
576 }
577 }
578 }
579 }
580 }
581
582 /// Left-click
583 void wxRichTextCtrl::OnMoveMouse(wxMouseEvent& event)
584 {
585 wxClientDC dc(this);
586 PrepareDC(dc);
587 dc.SetFont(GetFont());
588
589 long position = 0;
590 wxPoint logicalPt = event.GetLogicalPosition(dc);
591 int hit = GetBuffer().HitTest(dc, logicalPt, position);
592
593 // See if we need to change the cursor
594
595 {
596 if (hit != wxRICHTEXT_HITTEST_NONE && !(hit & wxRICHTEXT_HITTEST_OUTSIDE))
597 {
598 wxTextAttr attr;
599 if (GetStyle(position, attr))
600 {
601 if (attr.HasFlag(wxTEXT_ATTR_URL))
602 {
603 SetCursor(m_urlCursor);
604 }
605 else if (!attr.HasFlag(wxTEXT_ATTR_URL))
606 {
607 SetCursor(m_textCursor);
608 }
609 }
610 }
611 else
612 SetCursor(m_textCursor);
613 }
614
615 if (!event.Dragging())
616 {
617 event.Skip();
618 return;
619 }
620
621 if (m_dragging && hit != wxRICHTEXT_HITTEST_NONE)
622 {
623 // TODO: test closeness
624
625 bool caretAtLineStart = false;
626
627 if (hit & wxRICHTEXT_HITTEST_BEFORE)
628 {
629 // If we're at the start of a line (but not first in para)
630 // then we should keep the caret showing at the start of the line
631 // by showing the m_caretAtLineStart flag.
632 wxRichTextParagraph* para = GetBuffer().GetParagraphAtPosition(position);
633 wxRichTextLine* line = GetBuffer().GetLineAtPosition(position);
634
635 if (line && para && line->GetAbsoluteRange().GetStart() == position && para->GetRange().GetStart() != position)
636 caretAtLineStart = true;
637 position --;
638 }
639
640 if (m_caretPosition != position)
641 {
642 ExtendSelection(m_caretPosition, position, wxRICHTEXT_SHIFT_DOWN);
643
644 MoveCaret(position, caretAtLineStart);
645 SetDefaultStyleToCursorStyle();
646 }
647 }
648 }
649
650 /// Right-click
651 void wxRichTextCtrl::OnRightClick(wxMouseEvent& event)
652 {
653 SetFocus();
654
655 wxRichTextEvent cmdEvent(
656 wxEVT_COMMAND_RICHTEXT_RIGHT_CLICK,
657 GetId());
658 cmdEvent.SetEventObject(this);
659 cmdEvent.SetPosition(m_caretPosition+1);
660
661 if (!GetEventHandler()->ProcessEvent(cmdEvent))
662 event.Skip();
663 }
664
665 /// Left-double-click
666 void wxRichTextCtrl::OnLeftDClick(wxMouseEvent& WXUNUSED(event))
667 {
668 wxRichTextEvent cmdEvent(
669 wxEVT_COMMAND_RICHTEXT_LEFT_DCLICK,
670 GetId());
671 cmdEvent.SetEventObject(this);
672 cmdEvent.SetPosition(m_caretPosition+1);
673
674 if (!GetEventHandler()->ProcessEvent(cmdEvent))
675 {
676 SelectWord(GetCaretPosition()+1);
677 }
678 }
679
680 /// Middle-click
681 void wxRichTextCtrl::OnMiddleClick(wxMouseEvent& event)
682 {
683 wxRichTextEvent cmdEvent(
684 wxEVT_COMMAND_RICHTEXT_MIDDLE_CLICK,
685 GetId());
686 cmdEvent.SetEventObject(this);
687 cmdEvent.SetPosition(m_caretPosition+1);
688
689 if (!GetEventHandler()->ProcessEvent(cmdEvent))
690 event.Skip();
691 }
692
693 /// Key press
694 void wxRichTextCtrl::OnChar(wxKeyEvent& event)
695 {
696 int flags = 0;
697 if (event.CmdDown())
698 flags |= wxRICHTEXT_CTRL_DOWN;
699 if (event.ShiftDown())
700 flags |= wxRICHTEXT_SHIFT_DOWN;
701 if (event.AltDown())
702 flags |= wxRICHTEXT_ALT_DOWN;
703
704 if (event.GetEventType() == wxEVT_KEY_DOWN)
705 {
706 if (event.IsKeyInCategory(WXK_CATEGORY_NAVIGATION))
707 {
708 KeyboardNavigate(event.GetKeyCode(), flags);
709 return;
710 }
711
712 long keycode = event.GetKeyCode();
713 switch ( keycode )
714 {
715 case WXK_ESCAPE:
716 case WXK_START:
717 case WXK_LBUTTON:
718 case WXK_RBUTTON:
719 case WXK_CANCEL:
720 case WXK_MBUTTON:
721 case WXK_CLEAR:
722 case WXK_SHIFT:
723 case WXK_ALT:
724 case WXK_CONTROL:
725 case WXK_MENU:
726 case WXK_PAUSE:
727 case WXK_CAPITAL:
728 case WXK_END:
729 case WXK_HOME:
730 case WXK_LEFT:
731 case WXK_UP:
732 case WXK_RIGHT:
733 case WXK_DOWN:
734 case WXK_SELECT:
735 case WXK_PRINT:
736 case WXK_EXECUTE:
737 case WXK_SNAPSHOT:
738 case WXK_INSERT:
739 case WXK_HELP:
740 case WXK_F1:
741 case WXK_F2:
742 case WXK_F3:
743 case WXK_F4:
744 case WXK_F5:
745 case WXK_F6:
746 case WXK_F7:
747 case WXK_F8:
748 case WXK_F9:
749 case WXK_F10:
750 case WXK_F11:
751 case WXK_F12:
752 case WXK_F13:
753 case WXK_F14:
754 case WXK_F15:
755 case WXK_F16:
756 case WXK_F17:
757 case WXK_F18:
758 case WXK_F19:
759 case WXK_F20:
760 case WXK_F21:
761 case WXK_F22:
762 case WXK_F23:
763 case WXK_F24:
764 case WXK_NUMLOCK:
765 case WXK_SCROLL:
766 case WXK_PAGEUP:
767 case WXK_PAGEDOWN:
768 case WXK_NUMPAD_F1:
769 case WXK_NUMPAD_F2:
770 case WXK_NUMPAD_F3:
771 case WXK_NUMPAD_F4:
772 case WXK_NUMPAD_HOME:
773 case WXK_NUMPAD_LEFT:
774 case WXK_NUMPAD_UP:
775 case WXK_NUMPAD_RIGHT:
776 case WXK_NUMPAD_DOWN:
777 case WXK_NUMPAD_PAGEUP:
778 case WXK_NUMPAD_PAGEDOWN:
779 case WXK_NUMPAD_END:
780 case WXK_NUMPAD_BEGIN:
781 case WXK_NUMPAD_INSERT:
782 case WXK_WINDOWS_LEFT:
783 {
784 return;
785 }
786 default:
787 {
788 }
789 }
790
791 // Must process this before translation, otherwise it's translated into a WXK_DELETE event.
792 if (event.CmdDown() && event.GetKeyCode() == WXK_BACK)
793 {
794 BeginBatchUndo(_("Delete Text"));
795
796 long newPos = m_caretPosition;
797
798 bool processed = DeleteSelectedContent(& newPos);
799
800 // Submit range in character positions, which are greater than caret positions,
801 // so subtract 1 for deleted character and add 1 for conversion to character position.
802 if (newPos > -1)
803 {
804 if (event.CmdDown())
805 {
806 long pos = wxRichTextCtrl::FindNextWordPosition(-1);
807 if (pos < newPos)
808 {
809 GetBuffer().DeleteRangeWithUndo(wxRichTextRange(pos+1, newPos), this);
810 processed = true;
811 }
812 }
813
814 if (!processed)
815 GetBuffer().DeleteRangeWithUndo(wxRichTextRange(newPos, newPos), this);
816 }
817
818 EndBatchUndo();
819
820 if (GetLastPosition() == -1)
821 {
822 GetBuffer().Reset();
823
824 m_caretPosition = -1;
825 PositionCaret();
826 SetDefaultStyleToCursorStyle();
827 }
828
829 ScrollIntoView(m_caretPosition, WXK_LEFT);
830
831 wxRichTextEvent cmdEvent(
832 wxEVT_COMMAND_RICHTEXT_DELETE,
833 GetId());
834 cmdEvent.SetEventObject(this);
835 cmdEvent.SetFlags(flags);
836 cmdEvent.SetPosition(m_caretPosition+1);
837 GetEventHandler()->ProcessEvent(cmdEvent);
838
839 Update();
840 }
841 else
842 event.Skip();
843
844 return;
845 }
846
847 // all the other keys modify the controls contents which shouldn't be
848 // possible if we're read-only
849 if ( !IsEditable() )
850 {
851 event.Skip();
852 return;
853 }
854
855 if (event.GetKeyCode() == WXK_RETURN)
856 {
857 BeginBatchUndo(_("Insert Text"));
858
859 long newPos = m_caretPosition;
860
861 DeleteSelectedContent(& newPos);
862
863 if (event.ShiftDown())
864 {
865 wxString text;
866 text = wxRichTextLineBreakChar;
867 GetBuffer().InsertTextWithUndo(newPos+1, text, this);
868 m_caretAtLineStart = true;
869 PositionCaret();
870 }
871 else
872 GetBuffer().InsertNewlineWithUndo(newPos+1, this, wxRICHTEXT_INSERT_WITH_PREVIOUS_PARAGRAPH_STYLE|wxRICHTEXT_INSERT_INTERACTIVE);
873
874 EndBatchUndo();
875 SetDefaultStyleToCursorStyle();
876
877 ScrollIntoView(m_caretPosition, WXK_RIGHT);
878
879 wxRichTextEvent cmdEvent(
880 wxEVT_COMMAND_RICHTEXT_RETURN,
881 GetId());
882 cmdEvent.SetEventObject(this);
883 cmdEvent.SetFlags(flags);
884 cmdEvent.SetPosition(newPos+1);
885
886 if (!GetEventHandler()->ProcessEvent(cmdEvent))
887 {
888 // Generate conventional event
889 wxCommandEvent textEvent(wxEVT_COMMAND_TEXT_ENTER, GetId());
890 InitCommandEvent(textEvent);
891
892 GetEventHandler()->ProcessEvent(textEvent);
893 }
894 Update();
895 }
896 else if (event.GetKeyCode() == WXK_BACK)
897 {
898 BeginBatchUndo(_("Delete Text"));
899
900 long newPos = m_caretPosition;
901
902 bool processed = DeleteSelectedContent(& newPos);
903
904 // Submit range in character positions, which are greater than caret positions,
905 // so subtract 1 for deleted character and add 1 for conversion to character position.
906 if (newPos > -1)
907 {
908 if (event.CmdDown())
909 {
910 long pos = wxRichTextCtrl::FindNextWordPosition(-1);
911 if (pos < newPos)
912 {
913 GetBuffer().DeleteRangeWithUndo(wxRichTextRange(pos+1, newPos), this);
914 processed = true;
915 }
916 }
917
918 if (!processed)
919 GetBuffer().DeleteRangeWithUndo(wxRichTextRange(newPos, newPos), this);
920 }
921
922 EndBatchUndo();
923
924 if (GetLastPosition() == -1)
925 {
926 GetBuffer().Reset();
927
928 m_caretPosition = -1;
929 PositionCaret();
930 SetDefaultStyleToCursorStyle();
931 }
932
933 ScrollIntoView(m_caretPosition, WXK_LEFT);
934
935 wxRichTextEvent cmdEvent(
936 wxEVT_COMMAND_RICHTEXT_DELETE,
937 GetId());
938 cmdEvent.SetEventObject(this);
939 cmdEvent.SetFlags(flags);
940 cmdEvent.SetPosition(m_caretPosition+1);
941 GetEventHandler()->ProcessEvent(cmdEvent);
942
943 Update();
944 }
945 else if (event.GetKeyCode() == WXK_DELETE)
946 {
947 BeginBatchUndo(_("Delete Text"));
948
949 long newPos = m_caretPosition;
950
951 bool processed = DeleteSelectedContent(& newPos);
952
953 // Submit range in character positions, which are greater than caret positions,
954 if (newPos < GetBuffer().GetRange().GetEnd()+1)
955 {
956 if (event.CmdDown())
957 {
958 long pos = wxRichTextCtrl::FindNextWordPosition(1);
959 if (pos != -1 && (pos > newPos))
960 {
961 GetBuffer().DeleteRangeWithUndo(wxRichTextRange(newPos+1, pos), this);
962 processed = true;
963 }
964 }
965
966 if (!processed)
967 GetBuffer().DeleteRangeWithUndo(wxRichTextRange(newPos+1, newPos+1), this);
968 }
969
970 EndBatchUndo();
971
972 if (GetLastPosition() == -1)
973 {
974 GetBuffer().Reset();
975
976 m_caretPosition = -1;
977 PositionCaret();
978 SetDefaultStyleToCursorStyle();
979 }
980
981 wxRichTextEvent cmdEvent(
982 wxEVT_COMMAND_RICHTEXT_DELETE,
983 GetId());
984 cmdEvent.SetEventObject(this);
985 cmdEvent.SetFlags(flags);
986 cmdEvent.SetPosition(m_caretPosition+1);
987 GetEventHandler()->ProcessEvent(cmdEvent);
988
989 Update();
990 }
991 else
992 {
993 long keycode = event.GetKeyCode();
994 switch ( keycode )
995 {
996 case WXK_ESCAPE:
997 {
998 event.Skip();
999 return;
1000 }
1001
1002 default:
1003 {
1004 #ifdef __WXMAC__
1005 if (event.CmdDown())
1006 #else
1007 // Fixes AltGr+key with European input languages on Windows
1008 if ((event.CmdDown() && !event.AltDown()) || (event.AltDown() && !event.CmdDown()))
1009 #endif
1010 {
1011 event.Skip();
1012 return;
1013 }
1014
1015 wxRichTextEvent cmdEvent(
1016 wxEVT_COMMAND_RICHTEXT_CHARACTER,
1017 GetId());
1018 cmdEvent.SetEventObject(this);
1019 cmdEvent.SetFlags(flags);
1020 #if wxUSE_UNICODE
1021 cmdEvent.SetCharacter(event.GetUnicodeKey());
1022 #else
1023 cmdEvent.SetCharacter((wxChar) keycode);
1024 #endif
1025 cmdEvent.SetPosition(m_caretPosition+1);
1026
1027 if (keycode == wxT('\t'))
1028 {
1029 // See if we need to promote or demote the selection or paragraph at the cursor
1030 // position, instead of inserting a tab.
1031 long pos = GetAdjustedCaretPosition(GetCaretPosition());
1032 wxRichTextParagraph* para = GetBuffer().GetParagraphAtPosition(pos);
1033 if (para && para->GetRange().GetStart() == pos && para->GetAttributes().HasListStyleName())
1034 {
1035 wxRichTextRange range;
1036 if (HasSelection())
1037 range = GetSelectionRange();
1038 else
1039 range = para->GetRange().FromInternal();
1040
1041 int promoteBy = event.ShiftDown() ? 1 : -1;
1042
1043 PromoteList(promoteBy, range, NULL);
1044
1045 GetEventHandler()->ProcessEvent(cmdEvent);
1046
1047 return;
1048 }
1049 }
1050
1051 BeginBatchUndo(_("Insert Text"));
1052
1053 long newPos = m_caretPosition;
1054 DeleteSelectedContent(& newPos);
1055
1056 #if wxUSE_UNICODE
1057 wxString str = event.GetUnicodeKey();
1058 #else
1059 wxString str = (wxChar) event.GetKeyCode();
1060 #endif
1061 GetBuffer().InsertTextWithUndo(newPos+1, str, this, 0);
1062
1063 EndBatchUndo();
1064
1065 SetDefaultStyleToCursorStyle();
1066 ScrollIntoView(m_caretPosition, WXK_RIGHT);
1067
1068 GetEventHandler()->ProcessEvent(cmdEvent);
1069
1070 Update();
1071 }
1072 }
1073 }
1074 }
1075
1076 /// Delete content if there is a selection, e.g. when pressing a key.
1077 bool wxRichTextCtrl::DeleteSelectedContent(long* newPos)
1078 {
1079 if (HasSelection())
1080 {
1081 long pos = m_selectionRange.GetStart();
1082 GetBuffer().DeleteRangeWithUndo(m_selectionRange, this);
1083 m_selectionRange.SetRange(-2, -2);
1084
1085 if (newPos)
1086 *newPos = pos-1;
1087 return true;
1088 }
1089 else
1090 return false;
1091 }
1092
1093 /// Keyboard navigation
1094
1095 /*
1096
1097 Left: left one character
1098 Right: right one character
1099 Up: up one line
1100 Down: down one line
1101 Ctrl-Left: left one word
1102 Ctrl-Right: right one word
1103 Ctrl-Up: previous paragraph start
1104 Ctrl-Down: next start of paragraph
1105 Home: start of line
1106 End: end of line
1107 Ctrl-Home: start of document
1108 Ctrl-End: end of document
1109 Page-Up: Up a screen
1110 Page-Down: Down a screen
1111
1112 Maybe:
1113
1114 Ctrl-Alt-PgUp: Start of window
1115 Ctrl-Alt-PgDn: End of window
1116 F8: Start selection mode
1117 Esc: End selection mode
1118
1119 Adding Shift does the above but starts/extends selection.
1120
1121
1122 */
1123
1124 bool wxRichTextCtrl::KeyboardNavigate(int keyCode, int flags)
1125 {
1126 bool success = false;
1127
1128 if (keyCode == WXK_RIGHT || keyCode == WXK_NUMPAD_RIGHT)
1129 {
1130 if (flags & wxRICHTEXT_CTRL_DOWN)
1131 success = WordRight(1, flags);
1132 else
1133 success = MoveRight(1, flags);
1134 }
1135 else if (keyCode == WXK_LEFT || keyCode == WXK_NUMPAD_LEFT)
1136 {
1137 if (flags & wxRICHTEXT_CTRL_DOWN)
1138 success = WordLeft(1, flags);
1139 else
1140 success = MoveLeft(1, flags);
1141 }
1142 else if (keyCode == WXK_UP || keyCode == WXK_NUMPAD_UP)
1143 {
1144 if (flags & wxRICHTEXT_CTRL_DOWN)
1145 success = MoveToParagraphStart(flags);
1146 else
1147 success = MoveUp(1, flags);
1148 }
1149 else if (keyCode == WXK_DOWN || keyCode == WXK_NUMPAD_DOWN)
1150 {
1151 if (flags & wxRICHTEXT_CTRL_DOWN)
1152 success = MoveToParagraphEnd(flags);
1153 else
1154 success = MoveDown(1, flags);
1155 }
1156 else if (keyCode == WXK_PAGEUP || keyCode == WXK_NUMPAD_PAGEUP)
1157 {
1158 success = PageUp(1, flags);
1159 }
1160 else if (keyCode == WXK_PAGEDOWN || keyCode == WXK_NUMPAD_PAGEDOWN)
1161 {
1162 success = PageDown(1, flags);
1163 }
1164 else if (keyCode == WXK_HOME || keyCode == WXK_NUMPAD_HOME)
1165 {
1166 if (flags & wxRICHTEXT_CTRL_DOWN)
1167 success = MoveHome(flags);
1168 else
1169 success = MoveToLineStart(flags);
1170 }
1171 else if (keyCode == WXK_END || keyCode == WXK_NUMPAD_END)
1172 {
1173 if (flags & wxRICHTEXT_CTRL_DOWN)
1174 success = MoveEnd(flags);
1175 else
1176 success = MoveToLineEnd(flags);
1177 }
1178
1179 if (success)
1180 {
1181 ScrollIntoView(m_caretPosition, keyCode);
1182 SetDefaultStyleToCursorStyle();
1183 }
1184
1185 return success;
1186 }
1187
1188 /// Extend the selection. Selections are in caret positions.
1189 bool wxRichTextCtrl::ExtendSelection(long oldPos, long newPos, int flags)
1190 {
1191 if (flags & wxRICHTEXT_SHIFT_DOWN)
1192 {
1193 if (oldPos == newPos)
1194 return false;
1195
1196 wxRichTextRange oldSelection = m_selectionRange;
1197
1198 // If not currently selecting, start selecting
1199 if (m_selectionRange.GetStart() == -2)
1200 {
1201 m_selectionAnchor = oldPos;
1202
1203 if (oldPos > newPos)
1204 m_selectionRange.SetRange(newPos+1, oldPos);
1205 else
1206 m_selectionRange.SetRange(oldPos+1, newPos);
1207 }
1208 else
1209 {
1210 // Always ensure that the selection range start is greater than
1211 // the end.
1212 if (newPos > m_selectionAnchor)
1213 m_selectionRange.SetRange(m_selectionAnchor+1, newPos);
1214 else if (newPos == m_selectionAnchor)
1215 m_selectionRange = wxRichTextRange(-2, -2);
1216 else
1217 m_selectionRange.SetRange(newPos+1, m_selectionAnchor);
1218 }
1219
1220 RefreshForSelectionChange(oldSelection, m_selectionRange);
1221
1222 if (m_selectionRange.GetStart() > m_selectionRange.GetEnd())
1223 {
1224 wxLogDebug(wxT("Strange selection range"));
1225 }
1226
1227 return true;
1228 }
1229 else
1230 return false;
1231 }
1232
1233 /// Scroll into view, returning true if we scrolled.
1234 /// This takes a _caret_ position.
1235 bool wxRichTextCtrl::ScrollIntoView(long position, int keyCode)
1236 {
1237 wxRichTextLine* line = GetVisibleLineForCaretPosition(position);
1238
1239 if (!line)
1240 return false;
1241
1242 int ppuX, ppuY;
1243 GetScrollPixelsPerUnit(& ppuX, & ppuY);
1244
1245 int startXUnits, startYUnits;
1246 GetViewStart(& startXUnits, & startYUnits);
1247 int startY = startYUnits * ppuY;
1248
1249 int sx = 0, sy = 0;
1250 GetVirtualSize(& sx, & sy);
1251 int sxUnits = 0;
1252 int syUnits = 0;
1253 if (ppuY != 0)
1254 syUnits = sy/ppuY;
1255
1256 wxRect rect = line->GetRect();
1257
1258 bool scrolled = false;
1259
1260 wxSize clientSize = GetClientSize();
1261 clientSize.y -= GetBuffer().GetBottomMargin();
1262
1263 if (GetWindowStyle() & wxRE_CENTRE_CARET)
1264 {
1265 int y = rect.y - GetClientSize().y/2;
1266 int yUnits = (int) (0.5 + ((float) y)/(float) ppuY);
1267 if (y >= 0 && (y + clientSize.y) < GetBuffer().GetCachedSize().y)
1268 {
1269 if (startYUnits != yUnits)
1270 {
1271 SetScrollbars(ppuX, ppuY, sxUnits, syUnits, 0, yUnits);
1272 scrolled = true;
1273 }
1274 #if !wxRICHTEXT_USE_OWN_CARET
1275 if (scrolled)
1276 #endif
1277 PositionCaret();
1278
1279 return scrolled;
1280 }
1281 }
1282
1283 // Going down
1284 if (keyCode == WXK_DOWN || keyCode == WXK_NUMPAD_DOWN ||
1285 keyCode == WXK_RIGHT || keyCode == WXK_NUMPAD_RIGHT ||
1286 keyCode == WXK_END || keyCode == WXK_NUMPAD_END ||
1287 keyCode == WXK_PAGEDOWN || keyCode == WXK_NUMPAD_PAGEDOWN)
1288 {
1289 if ((rect.y + rect.height) > (clientSize.y + startY))
1290 {
1291 // Make it scroll so this item is at the bottom
1292 // of the window
1293 int y = rect.y - (clientSize.y - rect.height);
1294 int yUnits = (int) (0.5 + ((float) y)/(float) ppuY);
1295
1296 // If we're still off the screen, scroll another line down
1297 if ((rect.y + rect.height) > (clientSize.y + (yUnits*ppuY)))
1298 yUnits ++;
1299
1300 if (startYUnits != yUnits)
1301 {
1302 SetScrollbars(ppuX, ppuY, sxUnits, syUnits, 0, yUnits);
1303 scrolled = true;
1304 }
1305 }
1306 else if (rect.y < (startY + GetBuffer().GetTopMargin()))
1307 {
1308 // Make it scroll so this item is at the top
1309 // of the window
1310 int y = rect.y - GetBuffer().GetTopMargin();
1311 int yUnits = (int) (0.5 + ((float) y)/(float) ppuY);
1312
1313 if (startYUnits != yUnits)
1314 {
1315 SetScrollbars(ppuX, ppuY, sxUnits, syUnits, 0, yUnits);
1316 scrolled = true;
1317 }
1318 }
1319 }
1320 // Going up
1321 else if (keyCode == WXK_UP || keyCode == WXK_NUMPAD_UP ||
1322 keyCode == WXK_LEFT || keyCode == WXK_NUMPAD_LEFT ||
1323 keyCode == WXK_HOME || keyCode == WXK_NUMPAD_HOME ||
1324 keyCode == WXK_PAGEUP || keyCode == WXK_NUMPAD_PAGEUP )
1325 {
1326 if (rect.y < (startY + GetBuffer().GetBottomMargin()))
1327 {
1328 // Make it scroll so this item is at the top
1329 // of the window
1330 int y = rect.y - GetBuffer().GetTopMargin();
1331 int yUnits = (int) (0.5 + ((float) y)/(float) ppuY);
1332
1333 if (startYUnits != yUnits)
1334 {
1335 SetScrollbars(ppuX, ppuY, sxUnits, syUnits, 0, yUnits);
1336 scrolled = true;
1337 }
1338 }
1339 else if ((rect.y + rect.height) > (clientSize.y + startY))
1340 {
1341 // Make it scroll so this item is at the bottom
1342 // of the window
1343 int y = rect.y - (clientSize.y - rect.height);
1344 int yUnits = (int) (0.5 + ((float) y)/(float) ppuY);
1345
1346 // If we're still off the screen, scroll another line down
1347 if ((rect.y + rect.height) > (clientSize.y + (yUnits*ppuY)))
1348 yUnits ++;
1349
1350 if (startYUnits != yUnits)
1351 {
1352 SetScrollbars(ppuX, ppuY, sxUnits, syUnits, 0, yUnits);
1353 scrolled = true;
1354 }
1355 }
1356 }
1357
1358 #if !wxRICHTEXT_USE_OWN_CARET
1359 if (scrolled)
1360 #endif
1361 PositionCaret();
1362
1363 return scrolled;
1364 }
1365
1366 /// Is the given position visible on the screen?
1367 bool wxRichTextCtrl::IsPositionVisible(long pos) const
1368 {
1369 wxRichTextLine* line = GetVisibleLineForCaretPosition(pos-1);
1370
1371 if (!line)
1372 return false;
1373
1374 int ppuX, ppuY;
1375 GetScrollPixelsPerUnit(& ppuX, & ppuY);
1376
1377 int startX, startY;
1378 GetViewStart(& startX, & startY);
1379 startX = 0;
1380 startY = startY * ppuY;
1381
1382 wxRect rect = line->GetRect();
1383 wxSize clientSize = GetClientSize();
1384 clientSize.y -= GetBuffer().GetBottomMargin();
1385
1386 return (rect.GetBottom() > (startY + GetBuffer().GetTopMargin())) && (rect.GetTop() < (startY + clientSize.y));
1387 }
1388
1389 void wxRichTextCtrl::SetCaretPosition(long position, bool showAtLineStart)
1390 {
1391 m_caretPosition = position;
1392 m_caretAtLineStart = showAtLineStart;
1393 }
1394
1395 /// Move caret one visual step forward: this may mean setting a flag
1396 /// and keeping the same position if we're going from the end of one line
1397 /// to the start of the next, which may be the exact same caret position.
1398 void wxRichTextCtrl::MoveCaretForward(long oldPosition)
1399 {
1400 wxRichTextParagraph* para = GetBuffer().GetParagraphAtPosition(oldPosition);
1401
1402 // Only do the check if we're not at the end of the paragraph (where things work OK
1403 // anyway)
1404 if (para && (oldPosition != para->GetRange().GetEnd() - 1))
1405 {
1406 wxRichTextLine* line = GetBuffer().GetLineAtPosition(oldPosition);
1407
1408 if (line)
1409 {
1410 wxRichTextRange lineRange = line->GetAbsoluteRange();
1411
1412 // We're at the end of a line. See whether we need to
1413 // stay at the same actual caret position but change visual
1414 // position, or not.
1415 if (oldPosition == lineRange.GetEnd())
1416 {
1417 if (m_caretAtLineStart)
1418 {
1419 // We're already at the start of the line, so actually move on now.
1420 m_caretPosition = oldPosition + 1;
1421 m_caretAtLineStart = false;
1422 }
1423 else
1424 {
1425 // We're showing at the end of the line, so keep to
1426 // the same position but indicate that we're to show
1427 // at the start of the next line.
1428 m_caretPosition = oldPosition;
1429 m_caretAtLineStart = true;
1430 }
1431 SetDefaultStyleToCursorStyle();
1432 return;
1433 }
1434 }
1435 }
1436 m_caretPosition ++;
1437 SetDefaultStyleToCursorStyle();
1438 }
1439
1440 /// Move caret one visual step backward: this may mean setting a flag
1441 /// and keeping the same position if we're going from the end of one line
1442 /// to the start of the next, which may be the exact same caret position.
1443 void wxRichTextCtrl::MoveCaretBack(long oldPosition)
1444 {
1445 wxRichTextParagraph* para = GetBuffer().GetParagraphAtPosition(oldPosition);
1446
1447 // Only do the check if we're not at the start of the paragraph (where things work OK
1448 // anyway)
1449 if (para && (oldPosition != para->GetRange().GetStart()))
1450 {
1451 wxRichTextLine* line = GetBuffer().GetLineAtPosition(oldPosition);
1452
1453 if (line)
1454 {
1455 wxRichTextRange lineRange = line->GetAbsoluteRange();
1456
1457 // We're at the start of a line. See whether we need to
1458 // stay at the same actual caret position but change visual
1459 // position, or not.
1460 if (oldPosition == lineRange.GetStart())
1461 {
1462 m_caretPosition = oldPosition-1;
1463 m_caretAtLineStart = true;
1464 return;
1465 }
1466 else if (oldPosition == lineRange.GetEnd())
1467 {
1468 if (m_caretAtLineStart)
1469 {
1470 // We're at the start of the line, so keep the same caret position
1471 // but clear the start-of-line flag.
1472 m_caretPosition = oldPosition;
1473 m_caretAtLineStart = false;
1474 }
1475 else
1476 {
1477 // We're showing at the end of the line, so go back
1478 // to the previous character position.
1479 m_caretPosition = oldPosition - 1;
1480 }
1481 SetDefaultStyleToCursorStyle();
1482 return;
1483 }
1484 }
1485 }
1486 m_caretPosition --;
1487 SetDefaultStyleToCursorStyle();
1488 }
1489
1490 /// Move right
1491 bool wxRichTextCtrl::MoveRight(int noPositions, int flags)
1492 {
1493 long endPos = GetBuffer().GetRange().GetEnd();
1494
1495 if (m_caretPosition + noPositions < endPos)
1496 {
1497 long oldPos = m_caretPosition;
1498 long newPos = m_caretPosition + noPositions;
1499
1500 bool extendSel = ExtendSelection(m_caretPosition, newPos, flags);
1501 if (!extendSel)
1502 SelectNone();
1503
1504 // Determine by looking at oldPos and m_caretPosition whether
1505 // we moved from the end of a line to the start of the next line, in which case
1506 // we want to adjust the caret position such that it is positioned at the
1507 // start of the next line, rather than jumping past the first character of the
1508 // line.
1509 if (noPositions == 1 && !extendSel)
1510 MoveCaretForward(oldPos);
1511 else
1512 SetCaretPosition(newPos);
1513
1514 PositionCaret();
1515 SetDefaultStyleToCursorStyle();
1516
1517 return true;
1518 }
1519 else
1520 return false;
1521 }
1522
1523 /// Move left
1524 bool wxRichTextCtrl::MoveLeft(int noPositions, int flags)
1525 {
1526 long startPos = -1;
1527
1528 if (m_caretPosition > startPos - noPositions + 1)
1529 {
1530 long oldPos = m_caretPosition;
1531 long newPos = m_caretPosition - noPositions;
1532 bool extendSel = ExtendSelection(m_caretPosition, newPos, flags);
1533 if (!extendSel)
1534 SelectNone();
1535
1536 if (noPositions == 1 && !extendSel)
1537 MoveCaretBack(oldPos);
1538 else
1539 SetCaretPosition(newPos);
1540
1541 PositionCaret();
1542 SetDefaultStyleToCursorStyle();
1543
1544 return true;
1545 }
1546 else
1547 return false;
1548 }
1549
1550 /// Move up
1551 bool wxRichTextCtrl::MoveUp(int noLines, int flags)
1552 {
1553 return MoveDown(- noLines, flags);
1554 }
1555
1556 /// Move up
1557 bool wxRichTextCtrl::MoveDown(int noLines, int flags)
1558 {
1559 if (!GetCaret())
1560 return false;
1561
1562 long lineNumber = GetBuffer().GetVisibleLineNumber(m_caretPosition, true, m_caretAtLineStart);
1563 wxPoint pt = GetCaret()->GetPosition();
1564 long newLine = lineNumber + noLines;
1565
1566 if (lineNumber != -1)
1567 {
1568 if (noLines > 0)
1569 {
1570 long lastLine = GetBuffer().GetVisibleLineNumber(GetBuffer().GetRange().GetEnd());
1571
1572 if (newLine > lastLine)
1573 return false;
1574 }
1575 else
1576 {
1577 if (newLine < 0)
1578 return false;
1579 }
1580 }
1581
1582 wxRichTextLine* lineObj = GetBuffer().GetLineForVisibleLineNumber(newLine);
1583 if (lineObj)
1584 {
1585 pt.y = lineObj->GetAbsolutePosition().y + 2;
1586 }
1587 else
1588 return false;
1589
1590 long newPos = 0;
1591 wxClientDC dc(this);
1592 PrepareDC(dc);
1593 dc.SetFont(GetFont());
1594
1595 int hitTest = GetBuffer().HitTest(dc, pt, newPos);
1596
1597 if (hitTest != wxRICHTEXT_HITTEST_NONE)
1598 {
1599 // If end of previous line, and hitTest is wxRICHTEXT_HITTEST_BEFORE,
1600 // we want to be at the end of the last line but with m_caretAtLineStart set to true,
1601 // so we view the caret at the start of the line.
1602 bool caretLineStart = false;
1603 if (hitTest & wxRICHTEXT_HITTEST_BEFORE)
1604 {
1605 wxRichTextLine* thisLine = GetBuffer().GetLineAtPosition(newPos-1);
1606 wxRichTextRange lineRange;
1607 if (thisLine)
1608 lineRange = thisLine->GetAbsoluteRange();
1609
1610 if (thisLine && (newPos-1) == lineRange.GetEnd())
1611 {
1612 newPos --;
1613 caretLineStart = true;
1614 }
1615 else
1616 {
1617 wxRichTextParagraph* para = GetBuffer().GetParagraphAtPosition(newPos);
1618 if (para && para->GetRange().GetStart() == newPos)
1619 newPos --;
1620 }
1621 }
1622
1623 long newSelEnd = newPos;
1624
1625 bool extendSel = ExtendSelection(m_caretPosition, newSelEnd, flags);
1626 if (!extendSel)
1627 SelectNone();
1628
1629 SetCaretPosition(newPos, caretLineStart);
1630 PositionCaret();
1631 SetDefaultStyleToCursorStyle();
1632
1633 return true;
1634 }
1635
1636 return false;
1637 }
1638
1639 /// Move to the end of the paragraph
1640 bool wxRichTextCtrl::MoveToParagraphEnd(int flags)
1641 {
1642 wxRichTextParagraph* para = GetBuffer().GetParagraphAtPosition(m_caretPosition, true);
1643 if (para)
1644 {
1645 long newPos = para->GetRange().GetEnd() - 1;
1646 bool extendSel = ExtendSelection(m_caretPosition, newPos, flags);
1647 if (!extendSel)
1648 SelectNone();
1649
1650 SetCaretPosition(newPos);
1651 PositionCaret();
1652 SetDefaultStyleToCursorStyle();
1653
1654 return true;
1655 }
1656
1657 return false;
1658 }
1659
1660 /// Move to the start of the paragraph
1661 bool wxRichTextCtrl::MoveToParagraphStart(int flags)
1662 {
1663 wxRichTextParagraph* para = GetBuffer().GetParagraphAtPosition(m_caretPosition, true);
1664 if (para)
1665 {
1666 long newPos = para->GetRange().GetStart() - 1;
1667 bool extendSel = ExtendSelection(m_caretPosition, newPos, flags);
1668 if (!extendSel)
1669 SelectNone();
1670
1671 SetCaretPosition(newPos);
1672 PositionCaret();
1673 SetDefaultStyleToCursorStyle();
1674
1675 return true;
1676 }
1677
1678 return false;
1679 }
1680
1681 /// Move to the end of the line
1682 bool wxRichTextCtrl::MoveToLineEnd(int flags)
1683 {
1684 wxRichTextLine* line = GetVisibleLineForCaretPosition(m_caretPosition);
1685
1686 if (line)
1687 {
1688 wxRichTextRange lineRange = line->GetAbsoluteRange();
1689 long newPos = lineRange.GetEnd();
1690 bool extendSel = ExtendSelection(m_caretPosition, newPos, flags);
1691 if (!extendSel)
1692 SelectNone();
1693
1694 SetCaretPosition(newPos);
1695 PositionCaret();
1696 SetDefaultStyleToCursorStyle();
1697
1698 return true;
1699 }
1700
1701 return false;
1702 }
1703
1704 /// Move to the start of the line
1705 bool wxRichTextCtrl::MoveToLineStart(int flags)
1706 {
1707 wxRichTextLine* line = GetVisibleLineForCaretPosition(m_caretPosition);
1708 if (line)
1709 {
1710 wxRichTextRange lineRange = line->GetAbsoluteRange();
1711 long newPos = lineRange.GetStart()-1;
1712
1713 bool extendSel = ExtendSelection(m_caretPosition, newPos, flags);
1714 if (!extendSel)
1715 SelectNone();
1716
1717 wxRichTextParagraph* para = GetBuffer().GetParagraphForLine(line);
1718
1719 SetCaretPosition(newPos, para->GetRange().GetStart() != lineRange.GetStart());
1720 PositionCaret();
1721 SetDefaultStyleToCursorStyle();
1722
1723 return true;
1724 }
1725
1726 return false;
1727 }
1728
1729 /// Move to the start of the buffer
1730 bool wxRichTextCtrl::MoveHome(int flags)
1731 {
1732 if (m_caretPosition != -1)
1733 {
1734 bool extendSel = ExtendSelection(m_caretPosition, -1, flags);
1735 if (!extendSel)
1736 SelectNone();
1737
1738 SetCaretPosition(-1);
1739 PositionCaret();
1740 SetDefaultStyleToCursorStyle();
1741
1742 return true;
1743 }
1744 else
1745 return false;
1746 }
1747
1748 /// Move to the end of the buffer
1749 bool wxRichTextCtrl::MoveEnd(int flags)
1750 {
1751 long endPos = GetBuffer().GetRange().GetEnd()-1;
1752
1753 if (m_caretPosition != endPos)
1754 {
1755 bool extendSel = ExtendSelection(m_caretPosition, endPos, flags);
1756 if (!extendSel)
1757 SelectNone();
1758
1759 SetCaretPosition(endPos);
1760 PositionCaret();
1761 SetDefaultStyleToCursorStyle();
1762
1763 return true;
1764 }
1765 else
1766 return false;
1767 }
1768
1769 /// Move noPages pages up
1770 bool wxRichTextCtrl::PageUp(int noPages, int flags)
1771 {
1772 return PageDown(- noPages, flags);
1773 }
1774
1775 /// Move noPages pages down
1776 bool wxRichTextCtrl::PageDown(int noPages, int flags)
1777 {
1778 // Calculate which line occurs noPages * screen height further down.
1779 wxRichTextLine* line = GetVisibleLineForCaretPosition(m_caretPosition);
1780 if (line)
1781 {
1782 wxSize clientSize = GetClientSize();
1783 int newY = line->GetAbsolutePosition().y + noPages*clientSize.y;
1784
1785 wxRichTextLine* newLine = GetBuffer().GetLineAtYPosition(newY);
1786 if (newLine)
1787 {
1788 wxRichTextRange lineRange = newLine->GetAbsoluteRange();
1789 long pos = lineRange.GetStart()-1;
1790 if (pos != m_caretPosition)
1791 {
1792 wxRichTextParagraph* para = GetBuffer().GetParagraphForLine(newLine);
1793
1794 bool extendSel = ExtendSelection(m_caretPosition, pos, flags);
1795 if (!extendSel)
1796 SelectNone();
1797
1798 SetCaretPosition(pos, para->GetRange().GetStart() != lineRange.GetStart());
1799 PositionCaret();
1800 SetDefaultStyleToCursorStyle();
1801
1802 return true;
1803 }
1804 }
1805 }
1806
1807 return false;
1808 }
1809
1810 static bool wxRichTextCtrlIsWhitespace(const wxString& str)
1811 {
1812 return str == wxT(" ") || str == wxT("\t");
1813 }
1814
1815 // Finds the caret position for the next word
1816 long wxRichTextCtrl::FindNextWordPosition(int direction) const
1817 {
1818 long endPos = GetBuffer().GetRange().GetEnd();
1819
1820 if (direction > 0)
1821 {
1822 long i = m_caretPosition+1+direction; // +1 for conversion to character pos
1823
1824 // First skip current text to space
1825 while (i < endPos && i > -1)
1826 {
1827 // i is in character, not caret positions
1828 wxString text = GetBuffer().GetTextForRange(wxRichTextRange(i, i));
1829 wxRichTextLine* line = GetBuffer().GetLineAtPosition(i, false);
1830 if (line && (i == line->GetAbsoluteRange().GetEnd()))
1831 {
1832 break;
1833 }
1834 else if (!wxRichTextCtrlIsWhitespace(text) && !text.empty())
1835 i += direction;
1836 else
1837 {
1838 break;
1839 }
1840 }
1841 while (i < endPos && i > -1)
1842 {
1843 // i is in character, not caret positions
1844 wxString text = GetBuffer().GetTextForRange(wxRichTextRange(i, i));
1845 wxRichTextLine* line = GetBuffer().GetLineAtPosition(i, false);
1846 if (line && (i == line->GetAbsoluteRange().GetEnd()))
1847 return wxMax(-1, i);
1848
1849 if (text.empty()) // End of paragraph, or maybe an image
1850 return wxMax(-1, i - 1);
1851 else if (wxRichTextCtrlIsWhitespace(text) || text.empty())
1852 i += direction;
1853 else
1854 {
1855 // Convert to caret position
1856 return wxMax(-1, i - 1);
1857 }
1858 }
1859 if (i >= endPos)
1860 return endPos-1;
1861 return i-1;
1862 }
1863 else
1864 {
1865 long i = m_caretPosition;
1866
1867 // First skip white space
1868 while (i < endPos && i > -1)
1869 {
1870 // i is in character, not caret positions
1871 wxString text = GetBuffer().GetTextForRange(wxRichTextRange(i, i));
1872 wxRichTextLine* line = GetBuffer().GetLineAtPosition(i, false);
1873
1874 if (text.empty() || (line && (i == line->GetAbsoluteRange().GetStart()))) // End of paragraph, or maybe an image
1875 break;
1876 else if (wxRichTextCtrlIsWhitespace(text) || text.empty())
1877 i += direction;
1878 else
1879 break;
1880 }
1881 // Next skip current text to space
1882 while (i < endPos && i > -1)
1883 {
1884 // i is in character, not caret positions
1885 wxString text = GetBuffer().GetTextForRange(wxRichTextRange(i, i));
1886 wxRichTextLine* line = GetBuffer().GetLineAtPosition(i, false);
1887 if (line && line->GetAbsoluteRange().GetStart() == i)
1888 return i-1;
1889
1890 if (!wxRichTextCtrlIsWhitespace(text) /* && !text.empty() */)
1891 i += direction;
1892 else
1893 {
1894 return i;
1895 }
1896 }
1897 if (i < -1)
1898 return -1;
1899 return i;
1900 }
1901 }
1902
1903 /// Move n words left
1904 bool wxRichTextCtrl::WordLeft(int WXUNUSED(n), int flags)
1905 {
1906 long pos = FindNextWordPosition(-1);
1907 if (pos != m_caretPosition)
1908 {
1909 wxRichTextParagraph* para = GetBuffer().GetParagraphAtPosition(pos, true);
1910
1911 bool extendSel = ExtendSelection(m_caretPosition, pos, flags);
1912 if (!extendSel)
1913 SelectNone();
1914
1915 SetCaretPosition(pos, para->GetRange().GetStart() != pos);
1916 PositionCaret();
1917 SetDefaultStyleToCursorStyle();
1918
1919 return true;
1920 }
1921
1922 return false;
1923 }
1924
1925 /// Move n words right
1926 bool wxRichTextCtrl::WordRight(int WXUNUSED(n), int flags)
1927 {
1928 long pos = FindNextWordPosition(1);
1929 if (pos != m_caretPosition)
1930 {
1931 wxRichTextParagraph* para = GetBuffer().GetParagraphAtPosition(pos, true);
1932
1933 bool extendSel = ExtendSelection(m_caretPosition, pos, flags);
1934 if (!extendSel)
1935 SelectNone();
1936
1937 SetCaretPosition(pos, para->GetRange().GetStart() != pos);
1938 PositionCaret();
1939 SetDefaultStyleToCursorStyle();
1940
1941 return true;
1942 }
1943
1944 return false;
1945 }
1946
1947 /// Sizing
1948 void wxRichTextCtrl::OnSize(wxSizeEvent& event)
1949 {
1950 // Only do sizing optimization for large buffers
1951 if (GetBuffer().GetRange().GetEnd() > m_delayedLayoutThreshold)
1952 {
1953 m_fullLayoutRequired = true;
1954 m_fullLayoutTime = wxGetLocalTimeMillis();
1955 m_fullLayoutSavedPosition = GetFirstVisiblePosition();
1956 LayoutContent(true /* onlyVisibleRect */);
1957 }
1958 else
1959 GetBuffer().Invalidate(wxRICHTEXT_ALL);
1960
1961 #if wxRICHTEXT_BUFFERED_PAINTING
1962 RecreateBuffer();
1963 #endif
1964
1965 event.Skip();
1966 }
1967
1968
1969 /// Idle-time processing
1970 void wxRichTextCtrl::OnIdle(wxIdleEvent& event)
1971 {
1972 #if wxRICHTEXT_USE_OWN_CARET
1973 if (((wxRichTextCaret*) GetCaret())->GetNeedsUpdate())
1974 {
1975 ((wxRichTextCaret*) GetCaret())->SetNeedsUpdate(false);
1976 PositionCaret();
1977 GetCaret()->Show();
1978 }
1979 #endif
1980
1981 const int layoutInterval = wxRICHTEXT_DEFAULT_LAYOUT_INTERVAL;
1982
1983 if (m_fullLayoutRequired && (wxGetLocalTimeMillis() > (m_fullLayoutTime + layoutInterval)))
1984 {
1985 m_fullLayoutRequired = false;
1986 m_fullLayoutTime = 0;
1987 GetBuffer().Invalidate(wxRICHTEXT_ALL);
1988 ShowPosition(m_fullLayoutSavedPosition);
1989 Refresh(false);
1990 }
1991
1992 if (m_caretPositionForDefaultStyle != -2)
1993 {
1994 // If the caret position has changed, no longer reflect the default style
1995 // in the UI.
1996 if (GetCaretPosition() != m_caretPositionForDefaultStyle)
1997 m_caretPositionForDefaultStyle = -2;
1998 }
1999
2000 event.Skip();
2001 }
2002
2003 /// Scrolling
2004 void wxRichTextCtrl::OnScroll(wxScrollWinEvent& event)
2005 {
2006 #if wxRICHTEXT_USE_OWN_CARET
2007 if (!((wxRichTextCaret*) GetCaret())->GetNeedsUpdate())
2008 {
2009 GetCaret()->Hide();
2010 ((wxRichTextCaret*) GetCaret())->SetNeedsUpdate();
2011 }
2012 #endif
2013
2014 event.Skip();
2015 }
2016
2017 /// Set up scrollbars, e.g. after a resize
2018 void wxRichTextCtrl::SetupScrollbars(bool atTop)
2019 {
2020 if (IsFrozen())
2021 return;
2022
2023 if (GetBuffer().IsEmpty())
2024 {
2025 SetScrollbars(0, 0, 0, 0, 0, 0);
2026 return;
2027 }
2028
2029 // TODO: reimplement scrolling so we scroll by line, not by fixed number
2030 // of pixels. See e.g. wxVScrolledWindow for ideas.
2031 int pixelsPerUnit = 5;
2032 wxSize clientSize = GetClientSize();
2033
2034 int maxHeight = GetBuffer().GetCachedSize().y + GetBuffer().GetTopMargin();
2035
2036 // Round up so we have at least maxHeight pixels
2037 int unitsY = (int) (((float)maxHeight/(float)pixelsPerUnit) + 0.5);
2038
2039 int startX = 0, startY = 0;
2040 if (!atTop)
2041 GetViewStart(& startX, & startY);
2042
2043 int maxPositionX = 0;
2044 int maxPositionY = (int) ((((float)(wxMax((unitsY*pixelsPerUnit) - clientSize.y, 0)))/((float)pixelsPerUnit)) + 0.5);
2045
2046 int newStartX = wxMin(maxPositionX, startX);
2047 int newStartY = wxMin(maxPositionY, startY);
2048
2049 int oldPPUX, oldPPUY;
2050 int oldStartX, oldStartY;
2051 int oldVirtualSizeX = 0, oldVirtualSizeY = 0;
2052 GetScrollPixelsPerUnit(& oldPPUX, & oldPPUY);
2053 GetViewStart(& oldStartX, & oldStartY);
2054 GetVirtualSize(& oldVirtualSizeX, & oldVirtualSizeY);
2055 if (oldPPUY > 0)
2056 oldVirtualSizeY /= oldPPUY;
2057
2058 if (oldPPUX == 0 && oldPPUY == pixelsPerUnit && oldVirtualSizeY == unitsY && oldStartX == newStartX && oldStartY == newStartY)
2059 return;
2060
2061 // Don't set scrollbars if there were none before, and there will be none now.
2062 if (oldPPUY != 0 && (oldVirtualSizeY < clientSize.y) && (unitsY*pixelsPerUnit < clientSize.y))
2063 return;
2064
2065 // Move to previous scroll position if
2066 // possible
2067 SetScrollbars(0, pixelsPerUnit, 0, unitsY, newStartX, newStartY);
2068 }
2069
2070 /// Paint the background
2071 void wxRichTextCtrl::PaintBackground(wxDC& dc)
2072 {
2073 wxColour backgroundColour = GetBackgroundColour();
2074 if (!backgroundColour.Ok())
2075 backgroundColour = wxSystemSettings::GetColour(wxSYS_COLOUR_3DFACE);
2076
2077 // Clear the background
2078 dc.SetBrush(wxBrush(backgroundColour));
2079 dc.SetPen(*wxTRANSPARENT_PEN);
2080 wxRect windowRect(GetClientSize());
2081 windowRect.x -= 2; windowRect.y -= 2;
2082 windowRect.width += 4; windowRect.height += 4;
2083
2084 // We need to shift the rectangle to take into account
2085 // scrolling. Converting device to logical coordinates.
2086 CalcUnscrolledPosition(windowRect.x, windowRect.y, & windowRect.x, & windowRect.y);
2087 dc.DrawRectangle(windowRect);
2088 }
2089
2090 #if wxRICHTEXT_BUFFERED_PAINTING
2091 /// Recreate buffer bitmap if necessary
2092 bool wxRichTextCtrl::RecreateBuffer(const wxSize& size)
2093 {
2094 wxSize sz = size;
2095 if (sz == wxDefaultSize)
2096 sz = GetClientSize();
2097
2098 if (sz.x < 1 || sz.y < 1)
2099 return false;
2100
2101 if (!m_bufferBitmap.Ok() || m_bufferBitmap.GetWidth() < sz.x || m_bufferBitmap.GetHeight() < sz.y)
2102 m_bufferBitmap = wxBitmap(sz.x, sz.y);
2103 return m_bufferBitmap.Ok();
2104 }
2105 #endif
2106
2107 // ----------------------------------------------------------------------------
2108 // file IO functions
2109 // ----------------------------------------------------------------------------
2110
2111 bool wxRichTextCtrl::DoLoadFile(const wxString& filename, int fileType)
2112 {
2113 bool success = GetBuffer().LoadFile(filename, (wxRichTextFileType)fileType);
2114 if (success)
2115 m_filename = filename;
2116
2117 DiscardEdits();
2118 SetInsertionPoint(0);
2119 LayoutContent();
2120 PositionCaret();
2121 SetupScrollbars(true);
2122 Refresh(false);
2123 wxTextCtrl::SendTextUpdatedEvent(this);
2124
2125 if (success)
2126 return true;
2127 else
2128 {
2129 wxLogError(_("File couldn't be loaded."));
2130
2131 return false;
2132 }
2133 }
2134
2135 bool wxRichTextCtrl::DoSaveFile(const wxString& filename, int fileType)
2136 {
2137 if (GetBuffer().SaveFile(filename, (wxRichTextFileType)fileType))
2138 {
2139 m_filename = filename;
2140
2141 DiscardEdits();
2142
2143 return true;
2144 }
2145
2146 wxLogError(_("The text couldn't be saved."));
2147
2148 return false;
2149 }
2150
2151 // ----------------------------------------------------------------------------
2152 // wxRichTextCtrl specific functionality
2153 // ----------------------------------------------------------------------------
2154
2155 /// Add a new paragraph of text to the end of the buffer
2156 wxRichTextRange wxRichTextCtrl::AddParagraph(const wxString& text)
2157 {
2158 wxRichTextRange range = GetBuffer().AddParagraph(text);
2159 LayoutContent();
2160 return range;
2161 }
2162
2163 /// Add an image
2164 wxRichTextRange wxRichTextCtrl::AddImage(const wxImage& image)
2165 {
2166 wxRichTextRange range = GetBuffer().AddImage(image);
2167 LayoutContent();
2168 return range;
2169 }
2170
2171 // ----------------------------------------------------------------------------
2172 // selection and ranges
2173 // ----------------------------------------------------------------------------
2174
2175 void wxRichTextCtrl::SelectAll()
2176 {
2177 SetSelection(0, GetLastPosition()+1);
2178 m_selectionAnchor = -1;
2179 }
2180
2181 /// Select none
2182 void wxRichTextCtrl::SelectNone()
2183 {
2184 if (!(GetSelectionRange() == wxRichTextRange(-2, -2)))
2185 {
2186 wxRichTextRange oldSelection = m_selectionRange;
2187
2188 m_selectionRange = wxRichTextRange(-2, -2);
2189
2190 RefreshForSelectionChange(oldSelection, m_selectionRange);
2191 }
2192 m_selectionAnchor = -2;
2193 }
2194
2195 static bool wxIsWordDelimiter(const wxString& text)
2196 {
2197 return !text.IsEmpty() && !wxIsalnum(text[0]);
2198 }
2199
2200 /// Select the word at the given character position
2201 bool wxRichTextCtrl::SelectWord(long position)
2202 {
2203 if (position < 0 || position > GetBuffer().GetRange().GetEnd())
2204 return false;
2205
2206 wxRichTextParagraph* para = GetBuffer().GetParagraphAtPosition(position);
2207 if (!para)
2208 return false;
2209
2210 if (position == para->GetRange().GetEnd())
2211 position --;
2212
2213 long positionStart = position;
2214 long positionEnd = position;
2215
2216 for (positionStart = position; positionStart >= para->GetRange().GetStart(); positionStart --)
2217 {
2218 wxString text = GetBuffer().GetTextForRange(wxRichTextRange(positionStart, positionStart));
2219 if (wxIsWordDelimiter(text))
2220 {
2221 positionStart ++;
2222 break;
2223 }
2224 }
2225 if (positionStart < para->GetRange().GetStart())
2226 positionStart = para->GetRange().GetStart();
2227
2228 for (positionEnd = position; positionEnd < para->GetRange().GetEnd(); positionEnd ++)
2229 {
2230 wxString text = GetBuffer().GetTextForRange(wxRichTextRange(positionEnd, positionEnd));
2231 if (wxIsWordDelimiter(text))
2232 {
2233 positionEnd --;
2234 break;
2235 }
2236 }
2237 if (positionEnd >= para->GetRange().GetEnd())
2238 positionEnd = para->GetRange().GetEnd();
2239
2240 if (positionEnd < positionStart)
2241 return false;
2242
2243 SetSelection(positionStart, positionEnd+1);
2244
2245 if (positionStart >= 0)
2246 {
2247 MoveCaret(positionStart-1, true);
2248 SetDefaultStyleToCursorStyle();
2249 }
2250
2251 return true;
2252 }
2253
2254 wxString wxRichTextCtrl::GetStringSelection() const
2255 {
2256 long from, to;
2257 GetSelection(&from, &to);
2258
2259 return GetRange(from, to);
2260 }
2261
2262 // ----------------------------------------------------------------------------
2263 // hit testing
2264 // ----------------------------------------------------------------------------
2265
2266 wxTextCtrlHitTestResult
2267 wxRichTextCtrl::HitTest(const wxPoint& pt, wxTextCoord *x, wxTextCoord *y) const
2268 {
2269 // implement in terms of the other overload as the native ports typically
2270 // can get the position and not (x, y) pair directly (although wxUniv
2271 // directly gets x and y -- and so overrides this method as well)
2272 long pos;
2273 wxTextCtrlHitTestResult rc = HitTest(pt, &pos);
2274
2275 if ( rc != wxTE_HT_UNKNOWN )
2276 {
2277 PositionToXY(pos, x, y);
2278 }
2279
2280 return rc;
2281 }
2282
2283 wxTextCtrlHitTestResult
2284 wxRichTextCtrl::HitTest(const wxPoint& pt,
2285 long * pos) const
2286 {
2287 wxClientDC dc((wxRichTextCtrl*) this);
2288 ((wxRichTextCtrl*)this)->PrepareDC(dc);
2289
2290 // Buffer uses logical position (relative to start of buffer)
2291 // so convert
2292 wxPoint pt2 = GetLogicalPoint(pt);
2293
2294 int hit = ((wxRichTextCtrl*)this)->GetBuffer().HitTest(dc, pt2, *pos);
2295
2296 if ((hit & wxRICHTEXT_HITTEST_BEFORE) && (hit & wxRICHTEXT_HITTEST_OUTSIDE))
2297 return wxTE_HT_BEFORE;
2298 else if ((hit & wxRICHTEXT_HITTEST_AFTER) && (hit & wxRICHTEXT_HITTEST_OUTSIDE))
2299 return wxTE_HT_BEYOND;
2300 else if (hit & (wxRICHTEXT_HITTEST_BEFORE|wxRICHTEXT_HITTEST_AFTER))
2301 return wxTE_HT_ON_TEXT;
2302
2303 return wxTE_HT_UNKNOWN;
2304 }
2305
2306 // ----------------------------------------------------------------------------
2307 // set/get the controls text
2308 // ----------------------------------------------------------------------------
2309
2310 wxString wxRichTextCtrl::DoGetValue() const
2311 {
2312 return GetBuffer().GetText();
2313 }
2314
2315 wxString wxRichTextCtrl::GetRange(long from, long to) const
2316 {
2317 // Public API for range is different from internals
2318 return GetBuffer().GetTextForRange(wxRichTextRange(from, to-1));
2319 }
2320
2321 void wxRichTextCtrl::DoSetValue(const wxString& value, int flags)
2322 {
2323 // Don't call Clear here, since it always sends a text updated event
2324 m_buffer.ResetAndClearCommands();
2325 m_buffer.SetDirty(true);
2326 m_caretPosition = -1;
2327 m_caretPositionForDefaultStyle = -2;
2328 m_caretAtLineStart = false;
2329 m_selectionRange.SetRange(-2, -2);
2330
2331 Scroll(0,0);
2332
2333 if (!IsFrozen())
2334 {
2335 LayoutContent();
2336 Refresh(false);
2337 }
2338
2339 if (!value.IsEmpty())
2340 {
2341 // Remove empty paragraph
2342 GetBuffer().Clear();
2343 DoWriteText(value, flags);
2344
2345 // for compatibility, don't move the cursor when doing SetValue()
2346 SetInsertionPoint(0);
2347 }
2348 else
2349 {
2350 // still send an event for consistency
2351 if (flags & SetValue_SendEvent)
2352 wxTextCtrl::SendTextUpdatedEvent(this);
2353 }
2354 DiscardEdits();
2355 }
2356
2357 void wxRichTextCtrl::WriteText(const wxString& value)
2358 {
2359 DoWriteText(value);
2360 }
2361
2362 void wxRichTextCtrl::DoWriteText(const wxString& value, int flags)
2363 {
2364 wxString valueUnix = wxTextFile::Translate(value, wxTextFileType_Unix);
2365
2366 GetBuffer().InsertTextWithUndo(m_caretPosition+1, valueUnix, this, wxRICHTEXT_INSERT_WITH_PREVIOUS_PARAGRAPH_STYLE);
2367
2368 if ( flags & SetValue_SendEvent )
2369 wxTextCtrl::SendTextUpdatedEvent(this);
2370 }
2371
2372 void wxRichTextCtrl::AppendText(const wxString& text)
2373 {
2374 SetInsertionPointEnd();
2375
2376 WriteText(text);
2377 }
2378
2379 /// Write an image at the current insertion point
2380 bool wxRichTextCtrl::WriteImage(const wxImage& image, wxBitmapType bitmapType)
2381 {
2382 wxRichTextImageBlock imageBlock;
2383
2384 wxImage image2 = image;
2385 if (imageBlock.MakeImageBlock(image2, bitmapType))
2386 return WriteImage(imageBlock);
2387
2388 return false;
2389 }
2390
2391 bool wxRichTextCtrl::WriteImage(const wxString& filename, wxBitmapType bitmapType)
2392 {
2393 wxRichTextImageBlock imageBlock;
2394
2395 wxImage image;
2396 if (imageBlock.MakeImageBlock(filename, bitmapType, image, false))
2397 return WriteImage(imageBlock);
2398
2399 return false;
2400 }
2401
2402 bool wxRichTextCtrl::WriteImage(const wxRichTextImageBlock& imageBlock)
2403 {
2404 return GetBuffer().InsertImageWithUndo(m_caretPosition+1, imageBlock, this);
2405 }
2406
2407 bool wxRichTextCtrl::WriteImage(const wxBitmap& bitmap, wxBitmapType bitmapType)
2408 {
2409 if (bitmap.Ok())
2410 {
2411 wxRichTextImageBlock imageBlock;
2412
2413 wxImage image = bitmap.ConvertToImage();
2414 if (image.Ok() && imageBlock.MakeImageBlock(image, bitmapType))
2415 return WriteImage(imageBlock);
2416 }
2417
2418 return false;
2419 }
2420
2421 /// Insert a newline (actually paragraph) at the current insertion point.
2422 bool wxRichTextCtrl::Newline()
2423 {
2424 return GetBuffer().InsertNewlineWithUndo(m_caretPosition+1, this, wxRICHTEXT_INSERT_WITH_PREVIOUS_PARAGRAPH_STYLE);
2425 }
2426
2427 /// Insert a line break at the current insertion point.
2428 bool wxRichTextCtrl::LineBreak()
2429 {
2430 wxString text;
2431 text = wxRichTextLineBreakChar;
2432 return GetBuffer().InsertTextWithUndo(m_caretPosition+1, text, this);
2433 }
2434
2435 // ----------------------------------------------------------------------------
2436 // Clipboard operations
2437 // ----------------------------------------------------------------------------
2438
2439 void wxRichTextCtrl::Copy()
2440 {
2441 if (CanCopy())
2442 {
2443 wxRichTextRange range = GetInternalSelectionRange();
2444 GetBuffer().CopyToClipboard(range);
2445 }
2446 }
2447
2448 void wxRichTextCtrl::Cut()
2449 {
2450 if (CanCut())
2451 {
2452 wxRichTextRange range = GetInternalSelectionRange();
2453 GetBuffer().CopyToClipboard(range);
2454
2455 DeleteSelectedContent();
2456 LayoutContent();
2457 Refresh(false);
2458 }
2459 }
2460
2461 void wxRichTextCtrl::Paste()
2462 {
2463 if (CanPaste())
2464 {
2465 BeginBatchUndo(_("Paste"));
2466
2467 long newPos = m_caretPosition;
2468 DeleteSelectedContent(& newPos);
2469
2470 GetBuffer().PasteFromClipboard(newPos);
2471
2472 EndBatchUndo();
2473 }
2474 }
2475
2476 void wxRichTextCtrl::DeleteSelection()
2477 {
2478 if (CanDeleteSelection())
2479 {
2480 DeleteSelectedContent();
2481 }
2482 }
2483
2484 bool wxRichTextCtrl::HasSelection() const
2485 {
2486 return m_selectionRange.GetStart() != -2 && m_selectionRange.GetEnd() != -2;
2487 }
2488
2489 bool wxRichTextCtrl::CanCopy() const
2490 {
2491 // Can copy if there's a selection
2492 return HasSelection();
2493 }
2494
2495 bool wxRichTextCtrl::CanCut() const
2496 {
2497 return HasSelection() && IsEditable();
2498 }
2499
2500 bool wxRichTextCtrl::CanPaste() const
2501 {
2502 if ( !IsEditable() )
2503 return false;
2504
2505 return GetBuffer().CanPasteFromClipboard();
2506 }
2507
2508 bool wxRichTextCtrl::CanDeleteSelection() const
2509 {
2510 return HasSelection() && IsEditable();
2511 }
2512
2513
2514 // ----------------------------------------------------------------------------
2515 // Accessors
2516 // ----------------------------------------------------------------------------
2517
2518 void wxRichTextCtrl::SetContextMenu(wxMenu* menu)
2519 {
2520 if (m_contextMenu && m_contextMenu != menu)
2521 delete m_contextMenu;
2522 m_contextMenu = menu;
2523 }
2524
2525 void wxRichTextCtrl::SetEditable(bool editable)
2526 {
2527 m_editable = editable;
2528 }
2529
2530 void wxRichTextCtrl::SetInsertionPoint(long pos)
2531 {
2532 SelectNone();
2533
2534 m_caretPosition = pos - 1;
2535
2536 PositionCaret();
2537
2538 SetDefaultStyleToCursorStyle();
2539 }
2540
2541 void wxRichTextCtrl::SetInsertionPointEnd()
2542 {
2543 long pos = GetLastPosition();
2544 SetInsertionPoint(pos);
2545 }
2546
2547 long wxRichTextCtrl::GetInsertionPoint() const
2548 {
2549 return m_caretPosition+1;
2550 }
2551
2552 wxTextPos wxRichTextCtrl::GetLastPosition() const
2553 {
2554 return GetBuffer().GetRange().GetEnd();
2555 }
2556
2557 // If the return values from and to are the same, there is no
2558 // selection.
2559 void wxRichTextCtrl::GetSelection(long* from, long* to) const
2560 {
2561 *from = m_selectionRange.GetStart();
2562 *to = m_selectionRange.GetEnd();
2563 if ((*to) != -1 && (*to) != -2)
2564 (*to) ++;
2565 }
2566
2567 bool wxRichTextCtrl::IsEditable() const
2568 {
2569 return m_editable;
2570 }
2571
2572 // ----------------------------------------------------------------------------
2573 // selection
2574 // ----------------------------------------------------------------------------
2575
2576 void wxRichTextCtrl::SetSelection(long from, long to)
2577 {
2578 // if from and to are both -1, it means (in wxWidgets) that all text should
2579 // be selected.
2580 if ( (from == -1) && (to == -1) )
2581 {
2582 from = 0;
2583 to = GetLastPosition()+1;
2584 }
2585
2586 if (from == to)
2587 {
2588 SelectNone();
2589 }
2590 else
2591 {
2592 wxRichTextRange oldSelection = m_selectionRange;
2593 m_selectionAnchor = from;
2594 m_selectionRange.SetRange(from, to-1);
2595 if (from > -2)
2596 m_caretPosition = from-1;
2597
2598 RefreshForSelectionChange(oldSelection, m_selectionRange);
2599 PositionCaret();
2600 }
2601 }
2602
2603 // ----------------------------------------------------------------------------
2604 // Editing
2605 // ----------------------------------------------------------------------------
2606
2607 void wxRichTextCtrl::Replace(long WXUNUSED(from), long WXUNUSED(to),
2608 const wxString& value)
2609 {
2610 BeginBatchUndo(_("Replace"));
2611
2612 DeleteSelectedContent();
2613
2614 DoWriteText(value, SetValue_SelectionOnly);
2615
2616 EndBatchUndo();
2617 }
2618
2619 void wxRichTextCtrl::Remove(long from, long to)
2620 {
2621 SelectNone();
2622
2623 GetBuffer().DeleteRangeWithUndo(wxRichTextRange(from, to-1), this);
2624
2625 LayoutContent();
2626 if (!IsFrozen())
2627 Refresh(false);
2628 }
2629
2630 bool wxRichTextCtrl::IsModified() const
2631 {
2632 return m_buffer.IsModified();
2633 }
2634
2635 void wxRichTextCtrl::MarkDirty()
2636 {
2637 m_buffer.Modify(true);
2638 }
2639
2640 void wxRichTextCtrl::DiscardEdits()
2641 {
2642 m_caretPositionForDefaultStyle = -2;
2643 m_buffer.Modify(false);
2644 m_buffer.GetCommandProcessor()->ClearCommands();
2645 }
2646
2647 int wxRichTextCtrl::GetNumberOfLines() const
2648 {
2649 return GetBuffer().GetParagraphCount();
2650 }
2651
2652 // ----------------------------------------------------------------------------
2653 // Positions <-> coords
2654 // ----------------------------------------------------------------------------
2655
2656 long wxRichTextCtrl::XYToPosition(long x, long y) const
2657 {
2658 return GetBuffer().XYToPosition(x, y);
2659 }
2660
2661 bool wxRichTextCtrl::PositionToXY(long pos, long *x, long *y) const
2662 {
2663 return GetBuffer().PositionToXY(pos, x, y);
2664 }
2665
2666 // ----------------------------------------------------------------------------
2667 //
2668 // ----------------------------------------------------------------------------
2669
2670 void wxRichTextCtrl::ShowPosition(long pos)
2671 {
2672 if (!IsPositionVisible(pos))
2673 ScrollIntoView(pos-1, WXK_DOWN);
2674 }
2675
2676 int wxRichTextCtrl::GetLineLength(long lineNo) const
2677 {
2678 return GetBuffer().GetParagraphLength(lineNo);
2679 }
2680
2681 wxString wxRichTextCtrl::GetLineText(long lineNo) const
2682 {
2683 return GetBuffer().GetParagraphText(lineNo);
2684 }
2685
2686 // ----------------------------------------------------------------------------
2687 // Undo/redo
2688 // ----------------------------------------------------------------------------
2689
2690 void wxRichTextCtrl::Undo()
2691 {
2692 if (CanUndo())
2693 {
2694 GetCommandProcessor()->Undo();
2695 }
2696 }
2697
2698 void wxRichTextCtrl::Redo()
2699 {
2700 if (CanRedo())
2701 {
2702 GetCommandProcessor()->Redo();
2703 }
2704 }
2705
2706 bool wxRichTextCtrl::CanUndo() const
2707 {
2708 return GetCommandProcessor()->CanUndo();
2709 }
2710
2711 bool wxRichTextCtrl::CanRedo() const
2712 {
2713 return GetCommandProcessor()->CanRedo();
2714 }
2715
2716 // ----------------------------------------------------------------------------
2717 // implementation details
2718 // ----------------------------------------------------------------------------
2719
2720 void wxRichTextCtrl::Command(wxCommandEvent& event)
2721 {
2722 SetValue(event.GetString());
2723 GetEventHandler()->ProcessEvent(event);
2724 }
2725
2726 void wxRichTextCtrl::OnDropFiles(wxDropFilesEvent& event)
2727 {
2728 // By default, load the first file into the text window.
2729 if (event.GetNumberOfFiles() > 0)
2730 {
2731 LoadFile(event.GetFiles()[0]);
2732 }
2733 }
2734
2735 wxSize wxRichTextCtrl::DoGetBestSize() const
2736 {
2737 return wxSize(10, 10);
2738 }
2739
2740 // ----------------------------------------------------------------------------
2741 // standard handlers for standard edit menu events
2742 // ----------------------------------------------------------------------------
2743
2744 void wxRichTextCtrl::OnCut(wxCommandEvent& WXUNUSED(event))
2745 {
2746 Cut();
2747 }
2748
2749 void wxRichTextCtrl::OnClear(wxCommandEvent& WXUNUSED(event))
2750 {
2751 DeleteSelection();
2752 }
2753
2754 void wxRichTextCtrl::OnCopy(wxCommandEvent& WXUNUSED(event))
2755 {
2756 Copy();
2757 }
2758
2759 void wxRichTextCtrl::OnPaste(wxCommandEvent& WXUNUSED(event))
2760 {
2761 Paste();
2762 }
2763
2764 void wxRichTextCtrl::OnUndo(wxCommandEvent& WXUNUSED(event))
2765 {
2766 Undo();
2767 }
2768
2769 void wxRichTextCtrl::OnRedo(wxCommandEvent& WXUNUSED(event))
2770 {
2771 Redo();
2772 }
2773
2774 void wxRichTextCtrl::OnUpdateCut(wxUpdateUIEvent& event)
2775 {
2776 event.Enable( CanCut() );
2777 }
2778
2779 void wxRichTextCtrl::OnUpdateCopy(wxUpdateUIEvent& event)
2780 {
2781 event.Enable( CanCopy() );
2782 }
2783
2784 void wxRichTextCtrl::OnUpdateClear(wxUpdateUIEvent& event)
2785 {
2786 event.Enable( CanDeleteSelection() );
2787 }
2788
2789 void wxRichTextCtrl::OnUpdatePaste(wxUpdateUIEvent& event)
2790 {
2791 event.Enable( CanPaste() );
2792 }
2793
2794 void wxRichTextCtrl::OnUpdateUndo(wxUpdateUIEvent& event)
2795 {
2796 event.Enable( CanUndo() );
2797 event.SetText( GetCommandProcessor()->GetUndoMenuLabel() );
2798 }
2799
2800 void wxRichTextCtrl::OnUpdateRedo(wxUpdateUIEvent& event)
2801 {
2802 event.Enable( CanRedo() );
2803 event.SetText( GetCommandProcessor()->GetRedoMenuLabel() );
2804 }
2805
2806 void wxRichTextCtrl::OnSelectAll(wxCommandEvent& WXUNUSED(event))
2807 {
2808 SelectAll();
2809 }
2810
2811 void wxRichTextCtrl::OnUpdateSelectAll(wxUpdateUIEvent& event)
2812 {
2813 event.Enable(GetLastPosition() > 0);
2814 }
2815
2816 void wxRichTextCtrl::OnContextMenu(wxContextMenuEvent& event)
2817 {
2818 if (event.GetEventObject() != this)
2819 {
2820 event.Skip();
2821 return;
2822 }
2823
2824 if (m_contextMenu)
2825 PopupMenu(m_contextMenu);
2826 return;
2827 }
2828
2829 bool wxRichTextCtrl::SetStyle(long start, long end, const wxTextAttr& style)
2830 {
2831 return GetBuffer().SetStyle(wxRichTextRange(start, end-1), wxTextAttr(style));
2832 }
2833
2834 bool wxRichTextCtrl::SetStyle(const wxRichTextRange& range, const wxTextAttr& style)
2835 {
2836 return GetBuffer().SetStyle(range.ToInternal(), style);
2837 }
2838
2839 // extended style setting operation with flags including:
2840 // wxRICHTEXT_SETSTYLE_WITH_UNDO, wxRICHTEXT_SETSTYLE_OPTIMIZE, wxRICHTEXT_SETSTYLE_PARAGRAPHS_ONLY.
2841 // see richtextbuffer.h for more details.
2842
2843 bool wxRichTextCtrl::SetStyleEx(const wxRichTextRange& range, const wxTextAttr& style, int flags)
2844 {
2845 return GetBuffer().SetStyle(range.ToInternal(), style, flags);
2846 }
2847
2848 bool wxRichTextCtrl::SetDefaultStyle(const wxTextAttr& style)
2849 {
2850 return GetBuffer().SetDefaultStyle(wxTextAttr(style));
2851 }
2852
2853 const wxTextAttr& wxRichTextCtrl::GetDefaultStyle() const
2854 {
2855 return GetBuffer().GetDefaultStyle();
2856 }
2857
2858 bool wxRichTextCtrl::GetStyle(long position, wxTextAttr& style)
2859 {
2860 return GetBuffer().GetStyle(position, style);
2861 }
2862
2863 // get the common set of styles for the range
2864 bool wxRichTextCtrl::GetStyleForRange(const wxRichTextRange& range, wxTextAttr& style)
2865 {
2866 return GetBuffer().GetStyleForRange(range.ToInternal(), style);
2867 }
2868
2869 /// Get the content (uncombined) attributes for this position.
2870 bool wxRichTextCtrl::GetUncombinedStyle(long position, wxTextAttr& style)
2871 {
2872 return GetBuffer().GetUncombinedStyle(position, style);
2873 }
2874
2875 /// Set font, and also the buffer attributes
2876 bool wxRichTextCtrl::SetFont(const wxFont& font)
2877 {
2878 wxTextCtrlBase::SetFont(font);
2879
2880 wxTextAttr attr = GetBuffer().GetAttributes();
2881 attr.SetFont(font);
2882 GetBuffer().SetBasicStyle(attr);
2883
2884 GetBuffer().Invalidate(wxRICHTEXT_ALL);
2885 Refresh(false);
2886
2887 return true;
2888 }
2889
2890 /// Transform logical to physical
2891 wxPoint wxRichTextCtrl::GetPhysicalPoint(const wxPoint& ptLogical) const
2892 {
2893 wxPoint pt;
2894 CalcScrolledPosition(ptLogical.x, ptLogical.y, & pt.x, & pt.y);
2895
2896 return pt;
2897 }
2898
2899 /// Transform physical to logical
2900 wxPoint wxRichTextCtrl::GetLogicalPoint(const wxPoint& ptPhysical) const
2901 {
2902 wxPoint pt;
2903 CalcUnscrolledPosition(ptPhysical.x, ptPhysical.y, & pt.x, & pt.y);
2904
2905 return pt;
2906 }
2907
2908 /// Position the caret
2909 void wxRichTextCtrl::PositionCaret()
2910 {
2911 if (!GetCaret())
2912 return;
2913
2914 //wxLogDebug(wxT("PositionCaret"));
2915
2916 wxRect caretRect;
2917 if (GetCaretPositionForIndex(GetCaretPosition(), caretRect))
2918 {
2919 wxPoint newPt = caretRect.GetPosition();
2920 wxSize newSz = caretRect.GetSize();
2921 wxPoint pt = GetPhysicalPoint(newPt);
2922 if (GetCaret()->GetPosition() != pt || GetCaret()->GetSize() != newSz)
2923 {
2924 GetCaret()->Hide();
2925 if (GetCaret()->GetSize() != newSz)
2926 GetCaret()->SetSize(newSz);
2927
2928 int halfSize = newSz.y/2;
2929 // If the caret is beyond the margin, hide it by moving it out of the way
2930 if (((pt.y + halfSize) < GetBuffer().GetTopMargin()) || ((pt.y + halfSize) > (GetClientSize().y - GetBuffer().GetBottomMargin())))
2931 pt.y = -200;
2932
2933 GetCaret()->Move(pt);
2934 GetCaret()->Show();
2935 }
2936 }
2937 }
2938
2939 /// Get the caret height and position for the given character position
2940 bool wxRichTextCtrl::GetCaretPositionForIndex(long position, wxRect& rect)
2941 {
2942 wxClientDC dc(this);
2943 dc.SetFont(GetFont());
2944
2945 PrepareDC(dc);
2946
2947 wxPoint pt;
2948 int height = 0;
2949
2950 if (GetBuffer().FindPosition(dc, position, pt, & height, m_caretAtLineStart))
2951 {
2952 // Caret height can't be zero
2953 if (height == 0)
2954 height = dc.GetCharHeight();
2955
2956 rect = wxRect(pt, wxSize(wxRICHTEXT_DEFAULT_CARET_WIDTH, height));
2957 return true;
2958 }
2959
2960 return false;
2961 }
2962
2963 /// Gets the line for the visible caret position. If the caret is
2964 /// shown at the very end of the line, it means the next character is actually
2965 /// on the following line. So let's get the line we're expecting to find
2966 /// if this is the case.
2967 wxRichTextLine* wxRichTextCtrl::GetVisibleLineForCaretPosition(long caretPosition) const
2968 {
2969 wxRichTextLine* line = GetBuffer().GetLineAtPosition(caretPosition, true);
2970 wxRichTextParagraph* para = GetBuffer().GetParagraphAtPosition(caretPosition, true);
2971 if (line)
2972 {
2973 wxRichTextRange lineRange = line->GetAbsoluteRange();
2974 if (caretPosition == lineRange.GetStart()-1 &&
2975 (para->GetRange().GetStart() != lineRange.GetStart()))
2976 {
2977 if (!m_caretAtLineStart)
2978 line = GetBuffer().GetLineAtPosition(caretPosition-1, true);
2979 }
2980 }
2981 return line;
2982 }
2983
2984
2985 /// Move the caret to the given character position
2986 bool wxRichTextCtrl::MoveCaret(long pos, bool showAtLineStart)
2987 {
2988 if (GetBuffer().GetDirty())
2989 LayoutContent();
2990
2991 if (pos <= GetBuffer().GetRange().GetEnd())
2992 {
2993 SetCaretPosition(pos, showAtLineStart);
2994
2995 PositionCaret();
2996
2997 return true;
2998 }
2999 else
3000 return false;
3001 }
3002
3003 /// Layout the buffer: which we must do before certain operations, such as
3004 /// setting the caret position.
3005 bool wxRichTextCtrl::LayoutContent(bool onlyVisibleRect)
3006 {
3007 if (GetBuffer().GetDirty() || onlyVisibleRect)
3008 {
3009 wxRect availableSpace(GetClientSize());
3010 if (availableSpace.width == 0)
3011 availableSpace.width = 10;
3012 if (availableSpace.height == 0)
3013 availableSpace.height = 10;
3014
3015 int flags = wxRICHTEXT_FIXED_WIDTH|wxRICHTEXT_VARIABLE_HEIGHT;
3016 if (onlyVisibleRect)
3017 {
3018 flags |= wxRICHTEXT_LAYOUT_SPECIFIED_RECT;
3019 availableSpace.SetPosition(GetLogicalPoint(wxPoint(0, 0)));
3020 }
3021
3022 wxClientDC dc(this);
3023 dc.SetFont(GetFont());
3024
3025 PrepareDC(dc);
3026
3027 GetBuffer().Defragment();
3028 GetBuffer().UpdateRanges(); // If items were deleted, ranges need recalculation
3029 GetBuffer().Layout(dc, availableSpace, flags);
3030 GetBuffer().SetDirty(false);
3031
3032 if (!IsFrozen())
3033 SetupScrollbars();
3034 }
3035
3036 return true;
3037 }
3038
3039 /// Is all of the selection bold?
3040 bool wxRichTextCtrl::IsSelectionBold()
3041 {
3042 if (HasSelection())
3043 {
3044 wxTextAttr attr;
3045 wxRichTextRange range = GetSelectionRange();
3046 attr.SetFlags(wxTEXT_ATTR_FONT_WEIGHT);
3047 attr.SetFontWeight(wxFONTWEIGHT_BOLD);
3048
3049 return HasCharacterAttributes(range, attr);
3050 }
3051 else
3052 {
3053 // If no selection, then we need to combine current style with default style
3054 // to see what the effect would be if we started typing.
3055 wxTextAttr attr;
3056 attr.SetFlags(wxTEXT_ATTR_FONT_WEIGHT);
3057
3058 long pos = GetAdjustedCaretPosition(GetCaretPosition());
3059 if (GetStyle(pos, attr))
3060 {
3061 if (IsDefaultStyleShowing())
3062 wxRichTextApplyStyle(attr, GetDefaultStyleEx());
3063 return attr.GetFontWeight() == wxFONTWEIGHT_BOLD;
3064 }
3065 }
3066 return false;
3067 }
3068
3069 /// Is all of the selection italics?
3070 bool wxRichTextCtrl::IsSelectionItalics()
3071 {
3072 if (HasSelection())
3073 {
3074 wxRichTextRange range = GetSelectionRange();
3075 wxTextAttr attr;
3076 attr.SetFlags(wxTEXT_ATTR_FONT_ITALIC);
3077 attr.SetFontStyle(wxFONTSTYLE_ITALIC);
3078
3079 return HasCharacterAttributes(range, attr);
3080 }
3081 else
3082 {
3083 // If no selection, then we need to combine current style with default style
3084 // to see what the effect would be if we started typing.
3085 wxTextAttr attr;
3086 attr.SetFlags(wxTEXT_ATTR_FONT_ITALIC);
3087
3088 long pos = GetAdjustedCaretPosition(GetCaretPosition());
3089 if (GetStyle(pos, attr))
3090 {
3091 if (IsDefaultStyleShowing())
3092 wxRichTextApplyStyle(attr, GetDefaultStyleEx());
3093 return attr.GetFontStyle() == wxFONTSTYLE_ITALIC;
3094 }
3095 }
3096 return false;
3097 }
3098
3099 /// Is all of the selection underlined?
3100 bool wxRichTextCtrl::IsSelectionUnderlined()
3101 {
3102 if (HasSelection())
3103 {
3104 wxRichTextRange range = GetSelectionRange();
3105 wxTextAttr attr;
3106 attr.SetFlags(wxTEXT_ATTR_FONT_UNDERLINE);
3107 attr.SetFontUnderlined(true);
3108
3109 return HasCharacterAttributes(range, attr);
3110 }
3111 else
3112 {
3113 // If no selection, then we need to combine current style with default style
3114 // to see what the effect would be if we started typing.
3115 wxTextAttr attr;
3116 attr.SetFlags(wxTEXT_ATTR_FONT_UNDERLINE);
3117 long pos = GetAdjustedCaretPosition(GetCaretPosition());
3118
3119 if (GetStyle(pos, attr))
3120 {
3121 if (IsDefaultStyleShowing())
3122 wxRichTextApplyStyle(attr, GetDefaultStyleEx());
3123 return attr.GetFontUnderlined();
3124 }
3125 }
3126 return false;
3127 }
3128
3129 /// Apply bold to the selection
3130 bool wxRichTextCtrl::ApplyBoldToSelection()
3131 {
3132 wxTextAttr attr;
3133 attr.SetFlags(wxTEXT_ATTR_FONT_WEIGHT);
3134 attr.SetFontWeight(IsSelectionBold() ? wxFONTWEIGHT_NORMAL : wxFONTWEIGHT_BOLD);
3135
3136 if (HasSelection())
3137 return SetStyleEx(GetSelectionRange(), attr, wxRICHTEXT_SETSTYLE_WITH_UNDO|wxRICHTEXT_SETSTYLE_OPTIMIZE|wxRICHTEXT_SETSTYLE_CHARACTERS_ONLY);
3138 else
3139 {
3140 wxRichTextAttr current = GetDefaultStyleEx();
3141 current.Apply(attr);
3142 SetAndShowDefaultStyle(current);
3143 }
3144 return true;
3145 }
3146
3147 /// Apply italic to the selection
3148 bool wxRichTextCtrl::ApplyItalicToSelection()
3149 {
3150 wxTextAttr attr;
3151 attr.SetFlags(wxTEXT_ATTR_FONT_ITALIC);
3152 attr.SetFontStyle(IsSelectionItalics() ? wxFONTSTYLE_NORMAL : wxFONTSTYLE_ITALIC);
3153
3154 if (HasSelection())
3155 return SetStyleEx(GetSelectionRange(), attr, wxRICHTEXT_SETSTYLE_WITH_UNDO|wxRICHTEXT_SETSTYLE_OPTIMIZE|wxRICHTEXT_SETSTYLE_CHARACTERS_ONLY);
3156 else
3157 {
3158 wxRichTextAttr current = GetDefaultStyleEx();
3159 current.Apply(attr);
3160 SetAndShowDefaultStyle(current);
3161 }
3162 return true;
3163 }
3164
3165 /// Apply underline to the selection
3166 bool wxRichTextCtrl::ApplyUnderlineToSelection()
3167 {
3168 wxTextAttr attr;
3169 attr.SetFlags(wxTEXT_ATTR_FONT_UNDERLINE);
3170 attr.SetFontUnderlined(!IsSelectionUnderlined());
3171
3172 if (HasSelection())
3173 return SetStyleEx(GetSelectionRange(), attr, wxRICHTEXT_SETSTYLE_WITH_UNDO|wxRICHTEXT_SETSTYLE_OPTIMIZE|wxRICHTEXT_SETSTYLE_CHARACTERS_ONLY);
3174 else
3175 {
3176 wxRichTextAttr current = GetDefaultStyleEx();
3177 current.Apply(attr);
3178 SetAndShowDefaultStyle(current);
3179 }
3180 return true;
3181 }
3182
3183 /// Is all of the selection aligned according to the specified flag?
3184 bool wxRichTextCtrl::IsSelectionAligned(wxTextAttrAlignment alignment)
3185 {
3186 wxRichTextRange range;
3187 if (HasSelection())
3188 range = GetSelectionRange();
3189 else
3190 range = wxRichTextRange(GetCaretPosition()+1, GetCaretPosition()+2);
3191
3192 wxTextAttr attr;
3193 attr.SetAlignment(alignment);
3194
3195 return HasParagraphAttributes(range, attr);
3196 }
3197
3198 /// Apply alignment to the selection
3199 bool wxRichTextCtrl::ApplyAlignmentToSelection(wxTextAttrAlignment alignment)
3200 {
3201 wxTextAttr attr;
3202 attr.SetAlignment(alignment);
3203 if (HasSelection())
3204 return SetStyle(GetSelectionRange(), attr);
3205 else
3206 {
3207 wxRichTextParagraph* para = GetBuffer().GetParagraphAtPosition(GetCaretPosition()+1);
3208 if (para)
3209 return SetStyleEx(para->GetRange().FromInternal(), attr, wxRICHTEXT_SETSTYLE_WITH_UNDO|wxRICHTEXT_SETSTYLE_OPTIMIZE|wxRICHTEXT_SETSTYLE_PARAGRAPHS_ONLY);
3210 }
3211 return true;
3212 }
3213
3214 /// Apply a named style to the selection
3215 bool wxRichTextCtrl::ApplyStyle(wxRichTextStyleDefinition* def)
3216 {
3217 // Flags are defined within each definition, so only certain
3218 // attributes are applied.
3219 wxTextAttr attr(GetStyleSheet() ? def->GetStyleMergedWithBase(GetStyleSheet()) : def->GetStyle());
3220
3221 int flags = wxRICHTEXT_SETSTYLE_WITH_UNDO|wxRICHTEXT_SETSTYLE_OPTIMIZE|wxRICHTEXT_SETSTYLE_RESET;
3222
3223 if (def->IsKindOf(CLASSINFO(wxRichTextListStyleDefinition)))
3224 {
3225 flags |= wxRICHTEXT_SETSTYLE_PARAGRAPHS_ONLY;
3226
3227 wxRichTextRange range;
3228
3229 if (HasSelection())
3230 range = GetSelectionRange();
3231 else
3232 {
3233 long pos = GetAdjustedCaretPosition(GetCaretPosition());
3234 range = wxRichTextRange(pos, pos+1);
3235 }
3236
3237 return SetListStyle(range, (wxRichTextListStyleDefinition*) def, flags);
3238 }
3239
3240 // Make sure the attr has the style name
3241 if (def->IsKindOf(CLASSINFO(wxRichTextParagraphStyleDefinition)))
3242 {
3243 attr.SetParagraphStyleName(def->GetName());
3244
3245 // If applying a paragraph style, we only want the paragraph nodes to adopt these
3246 // attributes, and not the leaf nodes. This will allow the content (e.g. text)
3247 // to change its style independently.
3248 flags |= wxRICHTEXT_SETSTYLE_PARAGRAPHS_ONLY;
3249 }
3250 else
3251 attr.SetCharacterStyleName(def->GetName());
3252
3253 if (HasSelection())
3254 return SetStyleEx(GetSelectionRange(), attr, flags);
3255 else
3256 {
3257 wxRichTextAttr current = GetDefaultStyleEx();
3258 current.Apply(attr);
3259 SetAndShowDefaultStyle(current);
3260 return true;
3261 }
3262 }
3263
3264 /// Apply the style sheet to the buffer, for example if the styles have changed.
3265 bool wxRichTextCtrl::ApplyStyleSheet(wxRichTextStyleSheet* styleSheet)
3266 {
3267 if (!styleSheet)
3268 styleSheet = GetBuffer().GetStyleSheet();
3269 if (!styleSheet)
3270 return false;
3271
3272 if (GetBuffer().ApplyStyleSheet(styleSheet))
3273 {
3274 GetBuffer().Invalidate(wxRICHTEXT_ALL);
3275 Refresh(false);
3276 return true;
3277 }
3278 else
3279 return false;
3280 }
3281
3282 /// Sets the default style to the style under the cursor
3283 bool wxRichTextCtrl::SetDefaultStyleToCursorStyle()
3284 {
3285 wxTextAttr attr;
3286 attr.SetFlags(wxTEXT_ATTR_CHARACTER);
3287
3288 // If at the start of a paragraph, use the next position.
3289 long pos = GetAdjustedCaretPosition(GetCaretPosition());
3290
3291 if (GetUncombinedStyle(pos, attr))
3292 {
3293 SetDefaultStyle(attr);
3294 return true;
3295 }
3296
3297 return false;
3298 }
3299
3300 /// Returns the first visible position in the current view
3301 long wxRichTextCtrl::GetFirstVisiblePosition() const
3302 {
3303 wxRichTextLine* line = GetBuffer().GetLineAtYPosition(GetLogicalPoint(wxPoint(0, 0)).y);
3304 if (line)
3305 return line->GetAbsoluteRange().GetStart();
3306 else
3307 return 0;
3308 }
3309
3310 /// Get the first visible point in the window
3311 wxPoint wxRichTextCtrl::GetFirstVisiblePoint() const
3312 {
3313 int ppuX, ppuY;
3314 int startXUnits, startYUnits;
3315
3316 GetScrollPixelsPerUnit(& ppuX, & ppuY);
3317 GetViewStart(& startXUnits, & startYUnits);
3318
3319 return wxPoint(startXUnits * ppuX, startYUnits * ppuY);
3320 }
3321
3322 /// The adjusted caret position is the character position adjusted to take
3323 /// into account whether we're at the start of a paragraph, in which case
3324 /// style information should be taken from the next position, not current one.
3325 long wxRichTextCtrl::GetAdjustedCaretPosition(long caretPos) const
3326 {
3327 wxRichTextParagraph* para = GetBuffer().GetParagraphAtPosition(caretPos+1);
3328
3329 if (para && (caretPos+1 == para->GetRange().GetStart()))
3330 caretPos ++;
3331 return caretPos;
3332 }
3333
3334 /// Get/set the selection range in character positions. -1, -1 means no selection.
3335 /// The range is in API convention, i.e. a single character selection is denoted
3336 /// by (n, n+1)
3337 wxRichTextRange wxRichTextCtrl::GetSelectionRange() const
3338 {
3339 wxRichTextRange range = GetInternalSelectionRange();
3340 if (range != wxRichTextRange(-2,-2) && range != wxRichTextRange(-1,-1))
3341 range.SetEnd(range.GetEnd() + 1);
3342 return range;
3343 }
3344
3345 void wxRichTextCtrl::SetSelectionRange(const wxRichTextRange& range)
3346 {
3347 wxRichTextRange range1(range);
3348 if (range1 != wxRichTextRange(-2,-2) && range1 != wxRichTextRange(-1,-1) )
3349 range1.SetEnd(range1.GetEnd() - 1);
3350
3351 wxASSERT( range1.GetStart() > range1.GetEnd() );
3352
3353 SetInternalSelectionRange(range1);
3354 }
3355
3356 /// Set list style
3357 bool wxRichTextCtrl::SetListStyle(const wxRichTextRange& range, wxRichTextListStyleDefinition* def, int flags, int startFrom, int specifiedLevel)
3358 {
3359 return GetBuffer().SetListStyle(range.ToInternal(), def, flags, startFrom, specifiedLevel);
3360 }
3361
3362 bool wxRichTextCtrl::SetListStyle(const wxRichTextRange& range, const wxString& defName, int flags, int startFrom, int specifiedLevel)
3363 {
3364 return GetBuffer().SetListStyle(range.ToInternal(), defName, flags, startFrom, specifiedLevel);
3365 }
3366
3367 /// Clear list for given range
3368 bool wxRichTextCtrl::ClearListStyle(const wxRichTextRange& range, int flags)
3369 {
3370 return GetBuffer().ClearListStyle(range.ToInternal(), flags);
3371 }
3372
3373 /// Number/renumber any list elements in the given range
3374 bool wxRichTextCtrl::NumberList(const wxRichTextRange& range, wxRichTextListStyleDefinition* def, int flags, int startFrom, int specifiedLevel)
3375 {
3376 return GetBuffer().NumberList(range.ToInternal(), def, flags, startFrom, specifiedLevel);
3377 }
3378
3379 bool wxRichTextCtrl::NumberList(const wxRichTextRange& range, const wxString& defName, int flags, int startFrom, int specifiedLevel)
3380 {
3381 return GetBuffer().NumberList(range.ToInternal(), defName, flags, startFrom, specifiedLevel);
3382 }
3383
3384 /// Promote the list items within the given range. promoteBy can be a positive or negative number, e.g. 1 or -1
3385 bool wxRichTextCtrl::PromoteList(int promoteBy, const wxRichTextRange& range, wxRichTextListStyleDefinition* def, int flags, int specifiedLevel)
3386 {
3387 return GetBuffer().PromoteList(promoteBy, range.ToInternal(), def, flags, specifiedLevel);
3388 }
3389
3390 bool wxRichTextCtrl::PromoteList(int promoteBy, const wxRichTextRange& range, const wxString& defName, int flags, int specifiedLevel)
3391 {
3392 return GetBuffer().PromoteList(promoteBy, range.ToInternal(), defName, flags, specifiedLevel);
3393 }
3394
3395 /// Deletes the content in the given range
3396 bool wxRichTextCtrl::Delete(const wxRichTextRange& range)
3397 {
3398 return GetBuffer().DeleteRangeWithUndo(range.ToInternal(), this);
3399 }
3400
3401 const wxArrayString& wxRichTextCtrl::GetAvailableFontNames()
3402 {
3403 if (sm_availableFontNames.GetCount() == 0)
3404 {
3405 sm_availableFontNames = wxFontEnumerator::GetFacenames();
3406 sm_availableFontNames.Sort();
3407 }
3408 return sm_availableFontNames;
3409 }
3410
3411 void wxRichTextCtrl::ClearAvailableFontNames()
3412 {
3413 sm_availableFontNames.Clear();
3414 }
3415
3416 void wxRichTextCtrl::OnSysColourChanged(wxSysColourChangedEvent& WXUNUSED(event))
3417 {
3418 //wxLogDebug(wxT("wxRichTextCtrl::OnSysColourChanged"));
3419
3420 wxTextAttrEx basicStyle = GetBasicStyle();
3421 basicStyle.SetTextColour(wxSystemSettings::GetColour(wxSYS_COLOUR_WINDOWTEXT));
3422 SetBasicStyle(basicStyle);
3423 SetBackgroundColour(wxSystemSettings::GetColour(wxSYS_COLOUR_WINDOW));
3424
3425 Refresh();
3426 }
3427
3428 // Refresh the area affected by a selection change
3429 bool wxRichTextCtrl::RefreshForSelectionChange(const wxRichTextRange& oldSelection, const wxRichTextRange& newSelection)
3430 {
3431 // Calculate the refresh rectangle - just the affected lines
3432 long firstPos, lastPos;
3433 if (oldSelection.GetStart() == -2 && newSelection.GetStart() != -2)
3434 {
3435 firstPos = newSelection.GetStart();
3436 lastPos = newSelection.GetEnd();
3437 }
3438 else if (oldSelection.GetStart() != -2 && newSelection.GetStart() == -2)
3439 {
3440 firstPos = oldSelection.GetStart();
3441 lastPos = oldSelection.GetEnd();
3442 }
3443 else if (oldSelection.GetStart() == -2 && newSelection.GetStart() == -2)
3444 {
3445 return false;
3446 }
3447 else
3448 {
3449 firstPos = wxMin(oldSelection.GetStart(), newSelection.GetStart());
3450 lastPos = wxMax(oldSelection.GetEnd(), newSelection.GetEnd());
3451 }
3452
3453 wxRichTextLine* firstLine = GetBuffer().GetLineAtPosition(firstPos);
3454 wxRichTextLine* lastLine = GetBuffer().GetLineAtPosition(lastPos);
3455
3456 if (firstLine && lastLine)
3457 {
3458 wxSize clientSize = GetClientSize();
3459 wxPoint pt1 = GetPhysicalPoint(firstLine->GetAbsolutePosition());
3460 wxPoint pt2 = GetPhysicalPoint(lastLine->GetAbsolutePosition()) + wxPoint(0, lastLine->GetSize().y);
3461
3462 pt1.x = 0;
3463 pt1.y = wxMax(0, pt1.y);
3464 pt2.x = 0;
3465 pt2.y = wxMin(clientSize.y, pt2.y);
3466
3467 wxRect rect(pt1, wxSize(clientSize.x, pt2.y - pt1.y));
3468 RefreshRect(rect, false);
3469 }
3470 else
3471 Refresh(false);
3472
3473 return true;
3474 }
3475
3476 #if wxRICHTEXT_USE_OWN_CARET
3477
3478 // ----------------------------------------------------------------------------
3479 // initialization and destruction
3480 // ----------------------------------------------------------------------------
3481
3482 void wxRichTextCaret::Init()
3483 {
3484 m_hasFocus = true;
3485
3486 m_xOld =
3487 m_yOld = -1;
3488 m_richTextCtrl = NULL;
3489 m_needsUpdate = false;
3490 m_flashOn = true;
3491 }
3492
3493 wxRichTextCaret::~wxRichTextCaret()
3494 {
3495 if (m_timer.IsRunning())
3496 m_timer.Stop();
3497 }
3498
3499 // ----------------------------------------------------------------------------
3500 // showing/hiding/moving the caret (base class interface)
3501 // ----------------------------------------------------------------------------
3502
3503 void wxRichTextCaret::DoShow()
3504 {
3505 m_flashOn = true;
3506
3507 if (!m_timer.IsRunning())
3508 m_timer.Start(GetBlinkTime());
3509
3510 Refresh();
3511 }
3512
3513 void wxRichTextCaret::DoHide()
3514 {
3515 if (m_timer.IsRunning())
3516 m_timer.Stop();
3517
3518 Refresh();
3519 }
3520
3521 void wxRichTextCaret::DoMove()
3522 {
3523 if (IsVisible())
3524 {
3525 Refresh();
3526
3527 if (m_xOld != -1 && m_yOld != -1)
3528 {
3529 if (m_richTextCtrl)
3530 {
3531 wxRect rect(GetPosition(), GetSize());
3532 m_richTextCtrl->RefreshRect(rect, false);
3533 }
3534 }
3535 }
3536
3537 m_xOld = m_x;
3538 m_yOld = m_y;
3539 }
3540
3541 void wxRichTextCaret::DoSize()
3542 {
3543 int countVisible = m_countVisible;
3544 if (countVisible > 0)
3545 {
3546 m_countVisible = 0;
3547 DoHide();
3548 }
3549
3550 if (countVisible > 0)
3551 {
3552 m_countVisible = countVisible;
3553 DoShow();
3554 }
3555 }
3556
3557 // ----------------------------------------------------------------------------
3558 // handling the focus
3559 // ----------------------------------------------------------------------------
3560
3561 void wxRichTextCaret::OnSetFocus()
3562 {
3563 m_hasFocus = true;
3564
3565 if ( IsVisible() )
3566 Refresh();
3567 }
3568
3569 void wxRichTextCaret::OnKillFocus()
3570 {
3571 m_hasFocus = false;
3572 }
3573
3574 // ----------------------------------------------------------------------------
3575 // drawing the caret
3576 // ----------------------------------------------------------------------------
3577
3578 void wxRichTextCaret::Refresh()
3579 {
3580 if (m_richTextCtrl)
3581 {
3582 wxRect rect(GetPosition(), GetSize());
3583 m_richTextCtrl->RefreshRect(rect, false);
3584 }
3585 }
3586
3587 void wxRichTextCaret::DoDraw(wxDC *dc)
3588 {
3589 dc->SetPen( *wxBLACK_PEN );
3590
3591 dc->SetBrush(*(m_hasFocus ? wxBLACK_BRUSH : wxTRANSPARENT_BRUSH));
3592 dc->SetPen(*wxBLACK_PEN);
3593
3594 wxPoint pt(m_x, m_y);
3595
3596 if (m_richTextCtrl)
3597 {
3598 pt = m_richTextCtrl->GetLogicalPoint(pt);
3599 }
3600 if (IsVisible() && m_flashOn)
3601 dc->DrawRectangle(pt.x, pt.y, m_width, m_height);
3602 }
3603
3604 void wxRichTextCaret::Notify()
3605 {
3606 m_flashOn = !m_flashOn;
3607 Refresh();
3608 }
3609
3610 void wxRichTextCaretTimer::Notify()
3611 {
3612 m_caret->Notify();
3613 }
3614 #endif
3615 // wxRICHTEXT_USE_OWN_CARET
3616
3617 #endif
3618 // wxUSE_RICHTEXT
wxWidgets (Impactor)