include/wx/richtext/richtextctrl.h

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        wx/richtext/richtextctrl.h
   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 #ifndef _WX_RICHTEXTCTRL_H_
  13 #define _WX_RICHTEXTCTRL_H_
  14
  15 #include "wx/richtext/richtextbuffer.h"
  16
  17 #if wxUSE_RICHTEXT
  18
  19 #include "wx/scrolwin.h"
  20 #include "wx/caret.h"
  21
  22 #include "wx/textctrl.h"
  23
  24 #if !defined(__WXGTK__) && !defined(__WXMAC__)
  25 #define wxRICHTEXT_BUFFERED_PAINTING 1
  26 #else
  27 #define wxRICHTEXT_BUFFERED_PAINTING 0
  28 #endif
  29
  30 class WXDLLIMPEXP_FWD_RICHTEXT wxRichTextStyleDefinition;
  31
  32 /*!
  33  * Styles and flags
  34  */
  35
  36 /* Styles
  37  */
  38
  39 #define wxRE_READONLY          0x0010
  40 #define wxRE_MULTILINE         0x0020
  41
  42 /* Flags
  43  */
  44
  45 #define wxRICHTEXT_SHIFT_DOWN  0x01
  46 #define wxRICHTEXT_CTRL_DOWN   0x02
  47 #define wxRICHTEXT_ALT_DOWN    0x04
  48
  49 /* Defaults
  50  */
  51
  52 #define wxRICHTEXT_DEFAULT_OVERALL_SIZE wxSize(-1, -1)
  53 #define wxRICHTEXT_DEFAULT_IMAGE_SIZE wxSize(80, 80)
  54 #define wxRICHTEXT_DEFAULT_SPACING 3
  55 #define wxRICHTEXT_DEFAULT_MARGIN 3
  56 #define wxRICHTEXT_DEFAULT_UNFOCUSSED_BACKGROUND wxColour(175, 175, 175)
  57 #define wxRICHTEXT_DEFAULT_FOCUSSED_BACKGROUND wxColour(140, 140, 140)
  58 #define wxRICHTEXT_DEFAULT_UNSELECTED_BACKGROUND wxSystemSettings::GetColour(wxSYS_COLOUR_3DFACE)
  59 #define wxRICHTEXT_DEFAULT_TYPE_COLOUR wxColour(0, 0, 200)
  60 #define wxRICHTEXT_DEFAULT_FOCUS_RECT_COLOUR wxColour(100, 80, 80)
  61 #define wxRICHTEXT_DEFAULT_CARET_WIDTH 2
  62 // Minimum buffer size before delayed layout kicks in
  63 #define wxRICHTEXT_DEFAULT_DELAYED_LAYOUT_THRESHOLD 20000
  64 // Milliseconds before layout occurs after resize
  65 #define wxRICHTEXT_DEFAULT_LAYOUT_INTERVAL 50
  66
  67 /*!
  68  * Forward declarations
  69  */
  70
  71 /*!
  72  * wxRichTextItem class declaration
  73  */
  74
  75 // Drawing styles/states
  76 #define wxRICHTEXT_SELECTED    0x01
  77 #define wxRICHTEXT_TAGGED      0x02
  78 // The control is focussed
  79 #define wxRICHTEXT_FOCUSSED    0x04
  80 // The item itself has the focus
  81 #define wxRICHTEXT_IS_FOCUS    0x08
  82
  83 /*!
  84  * wxRichTextCtrl class declaration
  85  */
  86
  87 class WXDLLIMPEXP_RICHTEXT wxRichTextCtrl : public wxControl,
  88                                             public wxTextCtrlIface,
  89                                             public wxScrollHelper
  90 {
  91     DECLARE_CLASS( wxRichTextCtrl )
  92     DECLARE_EVENT_TABLE()
  93
  94 public:
  95 // Constructors
  96
  97     wxRichTextCtrl( );
  98     wxRichTextCtrl( wxWindow* parent, wxWindowID id = -1, const wxString& value = wxEmptyString, const wxPoint& pos = wxDefaultPosition, const wxSize& size = wxDefaultSize,
  99         long style = wxRE_MULTILINE, const wxValidator& validator = wxDefaultValidator, const wxString& name = wxTextCtrlNameStr);
 100
 101     virtual ~wxRichTextCtrl( );
 102
 103 // Operations
 104
 105     /// Creation
 106     bool Create( wxWindow* parent, wxWindowID id = -1, const wxString& value = wxEmptyString, const wxPoint& pos = wxDefaultPosition, const wxSize& size = wxDefaultSize,
 107         long style = wxRE_MULTILINE, const wxValidator& validator = wxDefaultValidator, const wxString& name = wxTextCtrlNameStr );
 108
 109     /// Member initialisation
 110     void Init();
 111
 112 ///// wxTextCtrl compatibility
 113
 114 // Accessors
 115
 116     virtual wxString GetValue() const;
 117
 118     virtual wxString GetRange(long from, long to) const;
 119
 120     virtual int GetLineLength(long lineNo) const ;
 121     virtual wxString GetLineText(long lineNo) const ;
 122     virtual int GetNumberOfLines() const ;
 123
 124     virtual bool IsModified() const ;
 125     virtual bool IsEditable() const ;
 126
 127     // more readable flag testing methods
 128     bool IsSingleLine() const { return !HasFlag(wxRE_MULTILINE); }
 129     bool IsMultiLine() const { return !IsSingleLine(); }
 130
 131     // If the return values from and to are the same, there is no selection.
 132     virtual void GetSelection(long* from, long* to) const;
 133
 134     virtual wxString GetStringSelection() const;
 135
 136     /// Get filename
 137     wxString GetFilename() const { return m_filename; }
 138
 139     /// Set filename
 140     void SetFilename(const wxString& filename) { m_filename = filename; }
 141
 142     /// Set the threshold in character positions for doing layout optimization during sizing
 143     void SetDelayedLayoutThreshold(long threshold) { m_delayedLayoutThreshold = threshold; }
 144
 145     /// Get the threshold in character positions for doing layout optimization during sizing
 146     long GetDelayedLayoutThreshold() const { return m_delayedLayoutThreshold; }
 147
 148 // Operations
 149
 150     // editing
 151     virtual void Clear();
 152     virtual void Replace(long from, long to, const wxString& value);
 153     virtual void Remove(long from, long to);
 154
 155     // load/save the controls contents from/to the file
 156     virtual bool DoLoadFile(const wxString& file, int fileType);
 157     virtual bool DoSaveFile(const wxString& file = wxEmptyString, int fileType = wxRICHTEXT_TYPE_ANY);
 158
 159     /// Set the handler flags, controlling loading and saving
 160     void SetHandlerFlags(int flags) { GetBuffer().SetHandlerFlags(flags); }
 161
 162     /// Get the handler flags, controlling loading and saving
 163     int GetHandlerFlags() const { return GetBuffer().GetHandlerFlags(); }
 164
 165     // sets/clears the dirty flag
 166     virtual void MarkDirty();
 167     virtual void DiscardEdits();
 168
 169     // set the max number of characters which may be entered in a single line
 170     // text control
 171     virtual void SetMaxLength(unsigned long WXUNUSED(len)) { }
 172
 173     // writing text inserts it at the current position, appending always
 174     // inserts it at the end
 175     virtual void WriteText(const wxString& text);
 176     virtual void AppendText(const wxString& text);
 177
 178     // text control under some platforms supports the text styles: these
 179     // methods allow to apply the given text style to the given selection or to
 180     // set/get the style which will be used for all appended text
 181     virtual bool SetStyle(long start, long end, const wxTextAttr& style);
 182     virtual bool SetStyle(const wxRichTextRange& range, const wxTextAttr& style);
 183     virtual bool GetStyle(long position, wxTextAttr& style);
 184
 185     // get the common set of styles for the range
 186     virtual bool GetStyleForRange(const wxRichTextRange& range, wxTextAttr& style);
 187     // extended style setting operation with flags including:
 188     // wxRICHTEXT_SETSTYLE_WITH_UNDO, wxRICHTEXT_SETSTYLE_OPTIMIZE, wxRICHTEXT_SETSTYLE_PARAGRAPHS_ONLY, wxRICHTEXT_SETSTYLE_CHARACTERS_ONLY
 189     // see richtextbuffer.h for more details.
 190     virtual bool SetStyleEx(const wxRichTextRange& range, const wxTextAttr& style, int flags = wxRICHTEXT_SETSTYLE_WITH_UNDO);
 191
 192     /// Get the content (uncombined) attributes for this position.
 193     virtual bool GetUncombinedStyle(long position, wxTextAttr& style);
 194
 195     virtual bool SetDefaultStyle(const wxTextAttr& style);
 196
 197     virtual const wxTextAttr& GetDefaultStyleEx() const { return GetDefaultStyle(); }
 198
 199     virtual const wxTextAttr& GetDefaultStyle() const;
 200
 201     /// Set list style
 202     virtual bool SetListStyle(const wxRichTextRange& range, wxRichTextListStyleDefinition* def, int flags = wxRICHTEXT_SETSTYLE_WITH_UNDO, int startFrom = 1, int specifiedLevel = -1);
 203     virtual bool SetListStyle(const wxRichTextRange& range, const wxString& defName, int flags = wxRICHTEXT_SETSTYLE_WITH_UNDO, int startFrom = 1, int specifiedLevel = -1);
 204
 205     /// Clear list for given range
 206     virtual bool ClearListStyle(const wxRichTextRange& range, int flags = wxRICHTEXT_SETSTYLE_WITH_UNDO);
 207
 208     /// Number/renumber any list elements in the given range
 209     /// def/defName can be NULL/empty to indicate that the existing list style should be used.
 210     virtual bool NumberList(const wxRichTextRange& range, wxRichTextListStyleDefinition* def = NULL, int flags = wxRICHTEXT_SETSTYLE_WITH_UNDO, int startFrom = 1, int specifiedLevel = -1);
 211     virtual bool NumberList(const wxRichTextRange& range, const wxString& defName, int flags = wxRICHTEXT_SETSTYLE_WITH_UNDO, int startFrom = 1, int specifiedLevel = -1);
 212
 213     /// Promote the list items within the given range. promoteBy can be a positive or negative number, e.g. 1 or -1
 214     /// def/defName can be NULL/empty to indicate that the existing list style should be used.
 215     virtual bool PromoteList(int promoteBy, const wxRichTextRange& range, wxRichTextListStyleDefinition* def = NULL, int flags = wxRICHTEXT_SETSTYLE_WITH_UNDO, int specifiedLevel = -1);
 216     virtual bool PromoteList(int promoteBy, const wxRichTextRange& range, const wxString& defName, int flags = wxRICHTEXT_SETSTYLE_WITH_UNDO, int specifiedLevel = -1);
 217
 218     /// Deletes the content in the given range
 219     virtual bool Delete(const wxRichTextRange& range);
 220
 221     // translate between the position (which is just an index in the text ctrl
 222     // considering all its contents as a single strings) and (x, y) coordinates
 223     // which represent column and line.
 224     virtual long XYToPosition(long x, long y) const;
 225     virtual bool PositionToXY(long pos, long *x, long *y) const;
 226
 227     virtual void ShowPosition(long pos);
 228
 229     // find the character at position given in pixels
 230     //
 231     // NB: pt is in device coords (not adjusted for the client area origin nor
 232     //     scrolling)
 233     virtual wxTextCtrlHitTestResult HitTest(const wxPoint& pt, long *pos) const;
 234     virtual wxTextCtrlHitTestResult HitTest(const wxPoint& pt,
 235                                             wxTextCoord *col,
 236                                             wxTextCoord *row) const;
 237
 238     // Clipboard operations
 239     virtual void Copy();
 240     virtual void Cut();
 241     virtual void Paste();
 242     virtual void DeleteSelection();
 243
 244     virtual bool CanCopy() const;
 245     virtual bool CanCut() const;
 246     virtual bool CanPaste() const;
 247     virtual bool CanDeleteSelection() const;
 248
 249     // Undo/redo
 250     virtual void Undo();
 251     virtual void Redo();
 252
 253     virtual bool CanUndo() const;
 254     virtual bool CanRedo() const;
 255
 256     // Insertion point
 257     virtual void SetInsertionPoint(long pos);
 258     virtual void SetInsertionPointEnd();
 259     virtual long GetInsertionPoint() const;
 260     virtual wxTextPos GetLastPosition() const;
 261
 262     virtual void SetSelection(long from, long to);
 263     virtual void SelectAll();
 264     virtual void SetEditable(bool editable);
 265
 266     /// Call Freeze to prevent refresh
 267     virtual void Freeze();
 268
 269     /// Call Thaw to refresh
 270     virtual void Thaw();
 271
 272     /// Call Thaw to refresh
 273     virtual bool IsFrozen() const { return m_freezeCount > 0; }
 274
 275     virtual bool HasSelection() const;
 276
 277 ///// Functionality specific to wxRichTextCtrl
 278
 279     /// Write an image at the current insertion point. Supply optional type to use
 280     /// for internal and file storage of the raw data.
 281     virtual bool WriteImage(const wxImage& image, int bitmapType = wxBITMAP_TYPE_PNG);
 282
 283     /// Write a bitmap at the current insertion point. Supply optional type to use
 284     /// for internal and file storage of the raw data.
 285     virtual bool WriteImage(const wxBitmap& bitmap, int bitmapType = wxBITMAP_TYPE_PNG);
 286
 287     /// Load an image from file and write at the current insertion point.
 288     virtual bool WriteImage(const wxString& filename, int bitmapType);
 289
 290     /// Write an image block at the current insertion point.
 291     virtual bool WriteImage(const wxRichTextImageBlock& imageBlock);
 292
 293     /// Insert a newline (actually paragraph) at the current insertion point.
 294     virtual bool Newline();
 295
 296     /// Insert a line break at the current insertion point.
 297     virtual bool LineBreak();
 298
 299     /// Set basic (overall) style
 300     virtual void SetBasicStyle(const wxTextAttr& style) { GetBuffer().SetBasicStyle(style); }
 301
 302     /// Get basic (overall) style
 303     virtual const wxTextAttr& GetBasicStyle() const { return GetBuffer().GetBasicStyle(); }
 304
 305     virtual bool BeginStyle(const wxTextAttr& style) { return GetBuffer().BeginStyle(style); }
 306
 307     /// End the style
 308     virtual bool EndStyle() { return GetBuffer().EndStyle(); }
 309
 310     /// End all styles
 311     virtual bool EndAllStyles() { return GetBuffer().EndAllStyles(); }
 312
 313     /// Begin using bold
 314     bool BeginBold() { return GetBuffer().BeginBold(); }
 315
 316     /// End using bold
 317     bool EndBold()  { return GetBuffer().EndBold(); }
 318
 319     /// Begin using italic
 320     bool BeginItalic() { return GetBuffer().BeginItalic(); }
 321
 322     /// End using italic
 323     bool EndItalic() { return GetBuffer().EndItalic(); }
 324
 325     /// Begin using underline
 326     bool BeginUnderline() { return GetBuffer().BeginUnderline(); }
 327
 328     /// End using underline
 329     bool EndUnderline() { return GetBuffer().EndUnderline(); }
 330
 331     /// Begin using point size
 332     bool BeginFontSize(int pointSize) { return GetBuffer().BeginFontSize(pointSize); }
 333
 334     /// End using point size
 335     bool EndFontSize() { return GetBuffer().EndFontSize(); }
 336
 337     /// Begin using this font
 338     bool BeginFont(const wxFont& font) { return GetBuffer().BeginFont(font); }
 339
 340     /// End using a font
 341     bool EndFont() { return GetBuffer().EndFont(); }
 342
 343     /// Begin using this colour
 344     bool BeginTextColour(const wxColour& colour) { return GetBuffer().BeginTextColour(colour); }
 345
 346     /// End using a colour
 347     bool EndTextColour() { return GetBuffer().EndTextColour(); }
 348
 349     /// Begin using alignment
 350     bool BeginAlignment(wxTextAttrAlignment alignment) { return GetBuffer().BeginAlignment(alignment); }
 351
 352     /// End alignment
 353     bool EndAlignment() { return GetBuffer().EndAlignment(); }
 354
 355     /// Begin left indent
 356     bool BeginLeftIndent(int leftIndent, int leftSubIndent = 0) { return GetBuffer().BeginLeftIndent(leftIndent, leftSubIndent); }
 357
 358     /// End left indent
 359     bool EndLeftIndent() { return GetBuffer().EndLeftIndent(); }
 360
 361     /// Begin right indent
 362     bool BeginRightIndent(int rightIndent) { return GetBuffer().BeginRightIndent(rightIndent); }
 363
 364     /// End right indent
 365     bool EndRightIndent() { return GetBuffer().EndRightIndent(); }
 366
 367     /// Begin paragraph spacing
 368     bool BeginParagraphSpacing(int before, int after) { return GetBuffer().BeginParagraphSpacing(before, after); }
 369
 370     /// End paragraph spacing
 371     bool EndParagraphSpacing() { return GetBuffer().EndParagraphSpacing(); }
 372
 373     /// Begin line spacing
 374     bool BeginLineSpacing(int lineSpacing) { return GetBuffer().BeginLineSpacing(lineSpacing); }
 375
 376     /// End line spacing
 377     bool EndLineSpacing() { return GetBuffer().EndLineSpacing(); }
 378
 379     /// Begin numbered bullet
 380     bool BeginNumberedBullet(int bulletNumber, int leftIndent, int leftSubIndent, int bulletStyle = wxTEXT_ATTR_BULLET_STYLE_ARABIC|wxTEXT_ATTR_BULLET_STYLE_PERIOD)
 381     { return GetBuffer().BeginNumberedBullet(bulletNumber, leftIndent, leftSubIndent, bulletStyle); }
 382
 383     /// End numbered bullet
 384     bool EndNumberedBullet() { return GetBuffer().EndNumberedBullet(); }
 385
 386     /// Begin symbol bullet
 387     bool BeginSymbolBullet(const wxString& symbol, int leftIndent, int leftSubIndent, int bulletStyle = wxTEXT_ATTR_BULLET_STYLE_SYMBOL)
 388     { return GetBuffer().BeginSymbolBullet(symbol, leftIndent, leftSubIndent, bulletStyle); }
 389
 390     /// End symbol bullet
 391     bool EndSymbolBullet() { return GetBuffer().EndSymbolBullet(); }
 392
 393     /// Begin standard bullet
 394     bool BeginStandardBullet(const wxString& bulletName, int leftIndent, int leftSubIndent, int bulletStyle = wxTEXT_ATTR_BULLET_STYLE_STANDARD)
 395     { return GetBuffer().BeginStandardBullet(bulletName, leftIndent, leftSubIndent, bulletStyle); }
 396
 397     /// End standard bullet
 398     bool EndStandardBullet() { return GetBuffer().EndStandardBullet(); }
 399
 400     /// Begin named character style
 401     bool BeginCharacterStyle(const wxString& characterStyle) { return GetBuffer().BeginCharacterStyle(characterStyle); }
 402
 403     /// End named character style
 404     bool EndCharacterStyle() { return GetBuffer().EndCharacterStyle(); }
 405
 406     /// Begin named paragraph style
 407     bool BeginParagraphStyle(const wxString& paragraphStyle) { return GetBuffer().BeginParagraphStyle(paragraphStyle); }
 408
 409     /// End named character style
 410     bool EndParagraphStyle() { return GetBuffer().EndParagraphStyle(); }
 411
 412     /// Begin named list style
 413     bool BeginListStyle(const wxString& listStyle, int level = 1, int number = 1) { return GetBuffer().BeginListStyle(listStyle, level, number); }
 414
 415     /// End named character style
 416     bool EndListStyle() { return GetBuffer().EndListStyle(); }
 417
 418     /// Begin URL
 419     bool BeginURL(const wxString& url, const wxString& characterStyle = wxEmptyString) { return GetBuffer().BeginURL(url, characterStyle); }
 420
 421     /// End URL
 422     bool EndURL() { return GetBuffer().EndURL(); }
 423
 424     /// Sets the default style to the style under the cursor
 425     bool SetDefaultStyleToCursorStyle();
 426
 427     /// Clear the selection
 428     virtual void SelectNone();
 429
 430     /// Select the word at the given character position
 431     virtual bool SelectWord(long position);
 432
 433     /// Get/set the selection range in character positions. -1, -1 means no selection.
 434     /// The range is in API convention, i.e. a single character selection is denoted
 435     /// by (n, n+1)
 436     wxRichTextRange GetSelectionRange() const;
 437     void SetSelectionRange(const wxRichTextRange& range);
 438
 439     /// Get/set the selection range in character positions. -1, -1 means no selection.
 440     /// The range is in internal format, i.e. a single character selection is denoted
 441     /// by (n, n)
 442     const wxRichTextRange& GetInternalSelectionRange() const { return m_selectionRange; }
 443     void SetInternalSelectionRange(const wxRichTextRange& range) { m_selectionRange = range; }
 444
 445     /// Add a new paragraph of text to the end of the buffer
 446     virtual wxRichTextRange AddParagraph(const wxString& text);
 447
 448     /// Add an image
 449     virtual wxRichTextRange AddImage(const wxImage& image);
 450
 451     /// Layout the buffer: which we must do before certain operations, such as
 452     /// setting the caret position.
 453     virtual bool LayoutContent(bool onlyVisibleRect = false);
 454
 455     /// Move the caret to the given character position
 456     virtual bool MoveCaret(long pos, bool showAtLineStart = false);
 457
 458     /// Move right
 459     virtual bool MoveRight(int noPositions = 1, int flags = 0);
 460
 461     /// Move left
 462     virtual bool MoveLeft(int noPositions = 1, int flags = 0);
 463
 464     /// Move up
 465     virtual bool MoveUp(int noLines = 1, int flags = 0);
 466
 467     /// Move up
 468     virtual bool MoveDown(int noLines = 1, int flags = 0);
 469
 470     /// Move to the end of the line
 471     virtual bool MoveToLineEnd(int flags = 0);
 472
 473     /// Move to the start of the line
 474     virtual bool MoveToLineStart(int flags = 0);
 475
 476     /// Move to the end of the paragraph
 477     virtual bool MoveToParagraphEnd(int flags = 0);
 478
 479     /// Move to the start of the paragraph
 480     virtual bool MoveToParagraphStart(int flags = 0);
 481
 482     /// Move to the start of the buffer
 483     virtual bool MoveHome(int flags = 0);
 484
 485     /// Move to the end of the buffer
 486     virtual bool MoveEnd(int flags = 0);
 487
 488     /// Move n pages up
 489     virtual bool PageUp(int noPages = 1, int flags = 0);
 490
 491     /// Move n pages down
 492     virtual bool PageDown(int noPages = 1, int flags = 0);
 493
 494     /// Move n words left
 495     virtual bool WordLeft(int noPages = 1, int flags = 0);
 496
 497     /// Move n words right
 498     virtual bool WordRight(int noPages = 1, int flags = 0);
 499
 500     /// Returns the buffer associated with the control.
 501     wxRichTextBuffer& GetBuffer() { return m_buffer; }
 502     const wxRichTextBuffer& GetBuffer() const { return m_buffer; }
 503
 504     /// Start batching undo history for commands.
 505     virtual bool BeginBatchUndo(const wxString& cmdName) { return m_buffer.BeginBatchUndo(cmdName); }
 506
 507     /// End batching undo history for commands.
 508     virtual bool EndBatchUndo() { return m_buffer.EndBatchUndo(); }
 509
 510     /// Are we batching undo history for commands?
 511     virtual bool BatchingUndo() const { return m_buffer.BatchingUndo(); }
 512
 513     /// Start suppressing undo history for commands.
 514     virtual bool BeginSuppressUndo() { return m_buffer.BeginSuppressUndo(); }
 515
 516     /// End suppressing undo history for commands.
 517     virtual bool EndSuppressUndo() { return m_buffer.EndSuppressUndo(); }
 518
 519     /// Are we suppressing undo history for commands?
 520     virtual bool SuppressingUndo() const { return m_buffer.SuppressingUndo(); }
 521
 522     /// Test if this whole range has character attributes of the specified kind. If any
 523     /// of the attributes are different within the range, the test fails. You
 524     /// can use this to implement, for example, bold button updating. style must have
 525     /// flags indicating which attributes are of interest.
 526     virtual bool HasCharacterAttributes(const wxRichTextRange& range, const wxTextAttr& style) const
 527     {
 528         return GetBuffer().HasCharacterAttributes(range.ToInternal(), style);
 529     }
 530
 531     /// Test if this whole range has paragraph attributes of the specified kind. If any
 532     /// of the attributes are different within the range, the test fails. You
 533     /// can use this to implement, for example, centering button updating. style must have
 534     /// flags indicating which attributes are of interest.
 535     virtual bool HasParagraphAttributes(const wxRichTextRange& range, const wxTextAttr& style) const
 536     {
 537         return GetBuffer().HasParagraphAttributes(range.ToInternal(), style);
 538     }
 539
 540     /// Is all of the selection bold?
 541     virtual bool IsSelectionBold();
 542
 543     /// Is all of the selection italics?
 544     virtual bool IsSelectionItalics();
 545
 546     /// Is all of the selection underlined?
 547     virtual bool IsSelectionUnderlined();
 548
 549     /// Is all of the selection aligned according to the specified flag?
 550     virtual bool IsSelectionAligned(wxTextAttrAlignment alignment);
 551
 552     /// Apply bold to the selection
 553     virtual bool ApplyBoldToSelection();
 554
 555     /// Apply italic to the selection
 556     virtual bool ApplyItalicToSelection();
 557
 558     /// Apply underline to the selection
 559     virtual bool ApplyUnderlineToSelection();
 560
 561     /// Apply alignment to the selection
 562     virtual bool ApplyAlignmentToSelection(wxTextAttrAlignment alignment);
 563
 564     /// Apply a named style to the selection
 565     virtual bool ApplyStyle(wxRichTextStyleDefinition* def);
 566
 567     /// Set style sheet, if any
 568     void SetStyleSheet(wxRichTextStyleSheet* styleSheet) { GetBuffer().SetStyleSheet(styleSheet); }
 569     wxRichTextStyleSheet* GetStyleSheet() const { return GetBuffer().GetStyleSheet(); }
 570
 571     /// Push style sheet to top of stack
 572     bool PushStyleSheet(wxRichTextStyleSheet* styleSheet) { return GetBuffer().PushStyleSheet(styleSheet); }
 573
 574     /// Pop style sheet from top of stack
 575     wxRichTextStyleSheet* PopStyleSheet() { return GetBuffer().PopStyleSheet(); }
 576
 577     /// Apply the style sheet to the buffer, for example if the styles have changed.
 578     bool ApplyStyleSheet(wxRichTextStyleSheet* styleSheet = NULL);
 579
 580 // Command handlers
 581
 582     void Command(wxCommandEvent& event);
 583     void OnDropFiles(wxDropFilesEvent& event);
 584     void OnCaptureLost(wxMouseCaptureLostEvent& event);
 585     void OnSysColourChanged(wxSysColourChangedEvent& event);
 586
 587     void OnCut(wxCommandEvent& event);
 588     void OnCopy(wxCommandEvent& event);
 589     void OnPaste(wxCommandEvent& event);
 590     void OnUndo(wxCommandEvent& event);
 591     void OnRedo(wxCommandEvent& event);
 592     void OnSelectAll(wxCommandEvent& event);
 593     void OnClear(wxCommandEvent& event);
 594
 595     void OnUpdateCut(wxUpdateUIEvent& event);
 596     void OnUpdateCopy(wxUpdateUIEvent& event);
 597     void OnUpdatePaste(wxUpdateUIEvent& event);
 598     void OnUpdateUndo(wxUpdateUIEvent& event);
 599     void OnUpdateRedo(wxUpdateUIEvent& event);
 600     void OnUpdateSelectAll(wxUpdateUIEvent& event);
 601     void OnUpdateClear(wxUpdateUIEvent& event);
 602
 603     // Show a context menu for Rich Edit controls (the standard
 604     // EDIT control has one already)
 605     void OnContextMenu(wxContextMenuEvent& event);
 606
 607 // Event handlers
 608
 609     /// Painting
 610     void OnPaint(wxPaintEvent& event);
 611     void OnEraseBackground(wxEraseEvent& event);
 612
 613     /// Left-click
 614     void OnLeftClick(wxMouseEvent& event);
 615
 616     /// Left-up
 617     void OnLeftUp(wxMouseEvent& event);
 618
 619     /// Motion
 620     void OnMoveMouse(wxMouseEvent& event);
 621
 622     /// Left-double-click
 623     void OnLeftDClick(wxMouseEvent& event);
 624
 625     /// Middle-click
 626     void OnMiddleClick(wxMouseEvent& event);
 627
 628     /// Right-click
 629     void OnRightClick(wxMouseEvent& event);
 630
 631     /// Key press
 632     void OnChar(wxKeyEvent& event);
 633
 634     /// Sizing
 635     void OnSize(wxSizeEvent& event);
 636
 637     /// Setting/losing focus
 638     void OnSetFocus(wxFocusEvent& event);
 639     void OnKillFocus(wxFocusEvent& event);
 640
 641     /// Idle-time processing
 642     void OnIdle(wxIdleEvent& event);
 643
 644     /// Scrolling
 645     void OnScroll(wxScrollWinEvent& event);
 646
 647     /// Set font, and also default attributes
 648     virtual bool SetFont(const wxFont& font);
 649
 650     /// Set up scrollbars, e.g. after a resize
 651     virtual void SetupScrollbars(bool atTop = false);
 652
 653     /// Keyboard navigation
 654     virtual bool KeyboardNavigate(int keyCode, int flags);
 655
 656     /// Paint the background
 657     virtual void PaintBackground(wxDC& dc);
 658
 659 #if wxRICHTEXT_BUFFERED_PAINTING
 660     /// Recreate buffer bitmap if necessary
 661     virtual bool RecreateBuffer(const wxSize& size = wxDefaultSize);
 662 #endif
 663
 664     /// Set the selection
 665     virtual void DoSetSelection(long from, long to, bool scrollCaret = true);
 666
 667     /// Write text
 668     virtual void DoWriteText(const wxString& value, int flags = 0);
 669
 670     /// Should we inherit colours?
 671     virtual bool ShouldInheritColours() const { return false; }
 672
 673     /// Position the caret
 674     virtual void PositionCaret();
 675
 676     /// Extend the selection, returning true if the selection was
 677     /// changed. Selections are in caret positions.
 678     virtual bool ExtendSelection(long oldPosition, long newPosition, int flags);
 679
 680     /// Scroll into view. This takes a _caret_ position.
 681     virtual bool ScrollIntoView(long position, int keyCode);
 682
 683     /// The caret position is the character position just before the caret.
 684     /// A value of -1 means the caret is at the start of the buffer.
 685     void SetCaretPosition(long position, bool showAtLineStart = false) ;
 686     long GetCaretPosition() const { return m_caretPosition; }
 687
 688     /// The adjusted caret position is the character position adjusted to take
 689     /// into account whether we're at the start of a paragraph, in which case
 690     /// style information should be taken from the next position, not current one.
 691     long GetAdjustedCaretPosition(long caretPos) const;
 692
 693     /// Move caret one visual step forward: this may mean setting a flag
 694     /// and keeping the same position if we're going from the end of one line
 695     /// to the start of the next, which may be the exact same caret position.
 696     void MoveCaretForward(long oldPosition) ;
 697
 698     /// Move caret one visual step forward: this may mean setting a flag
 699     /// and keeping the same position if we're going from the end of one line
 700     /// to the start of the next, which may be the exact same caret position.
 701     void MoveCaretBack(long oldPosition) ;
 702
 703     /// Get the caret height and position for the given character position
 704     bool GetCaretPositionForIndex(long position, wxRect& rect);
 705
 706     /// Gets the line for the visible caret position. If the caret is
 707     /// shown at the very end of the line, it means the next character is actually
 708     /// on the following line. So let's get the line we're expecting to find
 709     /// if this is the case.
 710     wxRichTextLine* GetVisibleLineForCaretPosition(long caretPosition) const;
 711
 712     /// Gets the command processor
 713     wxCommandProcessor* GetCommandProcessor() const { return GetBuffer().GetCommandProcessor(); }
 714
 715     /// Delete content if there is a selection, e.g. when pressing a key.
 716     /// Returns the new caret position in newPos, or leaves it if there
 717     /// was no action.
 718     bool DeleteSelectedContent(long* newPos= NULL);
 719
 720     /// Transform logical to physical
 721     wxPoint GetPhysicalPoint(const wxPoint& ptLogical) const;
 722
 723     /// Transform physical to logical
 724     wxPoint GetLogicalPoint(const wxPoint& ptPhysical) const;
 725
 726     /// Finds the caret position for the next word. Direction
 727     /// is 1 (forward) or -1 (backwards).
 728     virtual long FindNextWordPosition(int direction = 1) const;
 729
 730     /// Is the given position visible on the screen?
 731     bool IsPositionVisible(long pos) const;
 732
 733     /// Returns the first visible position in the current view
 734     long GetFirstVisiblePosition() const;
 735
 736     /// Returns the caret position since the default formatting was changed. As
 737     /// soon as this position changes, we no longer reflect the default style
 738     /// in the UI. A value of -2 means that we should only reflect the style of the
 739     /// content under the caret.
 740     long GetCaretPositionForDefaultStyle() const { return m_caretPositionForDefaultStyle; }
 741
 742     /// Set the caret position for the default style that the user is selecting.
 743     void SetCaretPositionForDefaultStyle(long pos) { m_caretPositionForDefaultStyle = pos; }
 744
 745     /// Should the UI reflect the default style chosen by the user, rather than the style under
 746     /// the caret?
 747     bool IsDefaultStyleShowing() const { return m_caretPositionForDefaultStyle != -2; }
 748
 749     /// Convenience function that tells the control to start reflecting the default
 750     /// style, since the user is changing it.
 751     void SetAndShowDefaultStyle(const wxTextAttr& attr)
 752     {
 753         SetDefaultStyle(attr);
 754         SetCaretPositionForDefaultStyle(GetCaretPosition());
 755     }
 756
 757     /// Get the first visible point in the window
 758     wxPoint GetFirstVisiblePoint() const;
 759
 760 // Implementation
 761
 762      /// Font names take a long time to retrieve, so cache them (on demand)
 763      static const wxArrayString& GetAvailableFontNames();
 764      static void ClearAvailableFontNames();
 765
 766      WX_FORWARD_TO_SCROLL_HELPER()
 767
 768 // Overrides
 769 protected:
 770
 771     virtual wxSize DoGetBestSize() const ;
 772
 773     virtual void DoSetValue(const wxString& value, int flags = 0);
 774
 775
 776 // Data members
 777 private:
 778
 779     /// Allows nested Freeze/Thaw
 780     int                     m_freezeCount;
 781
 782 #if wxRICHTEXT_BUFFERED_PAINTING
 783     /// Buffer bitmap
 784     wxBitmap                m_bufferBitmap;
 785 #endif
 786
 787     /// Text buffer
 788     wxRichTextBuffer        m_buffer;
 789
 790     wxMenu*                 m_contextMenu;
 791
 792     /// Caret position (1 less than the character position, so -1 is the
 793     /// first caret position).
 794     long                    m_caretPosition;
 795
 796     /// Caret position when the default formatting has been changed. As
 797     /// soon as this position changes, we no longer reflect the default style
 798     /// in the UI.
 799     long                    m_caretPositionForDefaultStyle;
 800
 801     /// Selection range in character positions. -2, -2 means no selection.
 802     wxRichTextRange         m_selectionRange;
 803
 804     /// Anchor so we know how to extend the selection
 805     /// It's a caret position since it's between two characters.
 806     long                    m_selectionAnchor;
 807
 808     /// Are we editable?
 809     bool                    m_editable;
 810
 811     /// Are we showing the caret position at the start of a line
 812     /// instead of at the end of the previous one?
 813     bool                    m_caretAtLineStart;
 814
 815     /// Are we dragging a selection?
 816     bool                    m_dragging;
 817
 818     /// Start position for drag
 819     wxPoint                 m_dragStart;
 820
 821     /// Do we need full layout in idle?
 822     bool                    m_fullLayoutRequired;
 823     wxLongLong              m_fullLayoutTime;
 824     long                    m_fullLayoutSavedPosition;
 825
 826     /// Threshold for doing delayed layout
 827     long                    m_delayedLayoutThreshold;
 828
 829     /// Cursors
 830     wxCursor                m_textCursor;
 831     wxCursor                m_urlCursor;
 832
 833     static wxArrayString    sm_availableFontNames;
 834 };
 835
 836 /*!
 837  * wxRichTextEvent - the event class for wxRichTextCtrl notifications
 838  */
 839
 840 class WXDLLIMPEXP_RICHTEXT wxRichTextEvent : public wxNotifyEvent
 841 {
 842 public:
 843     wxRichTextEvent(wxEventType commandType = wxEVT_NULL, int winid = 0)
 844         : wxNotifyEvent(commandType, winid),
 845         m_flags(0), m_position(-1), m_oldStyleSheet(NULL), m_newStyleSheet(NULL),
 846         m_char((wxChar) 0)
 847         { }
 848
 849     wxRichTextEvent(const wxRichTextEvent& event)
 850         : wxNotifyEvent(event),
 851         m_flags(event.m_flags), m_position(-1),
 852         m_oldStyleSheet(event.m_oldStyleSheet), m_newStyleSheet(event.m_newStyleSheet),
 853         m_char((wxChar) 0)
 854         { }
 855
 856     long GetPosition() const { return m_position; }
 857     void SetPosition(long pos) { m_position = pos; }
 858
 859     int GetFlags() const { return m_flags; }
 860     void SetFlags(int flags) { m_flags = flags; }
 861
 862     wxRichTextStyleSheet* GetOldStyleSheet() const { return m_oldStyleSheet; }
 863     void SetOldStyleSheet(wxRichTextStyleSheet* sheet) { m_oldStyleSheet = sheet; }
 864
 865     wxRichTextStyleSheet* GetNewStyleSheet() const { return m_newStyleSheet; }
 866     void SetNewStyleSheet(wxRichTextStyleSheet* sheet) { m_newStyleSheet = sheet; }
 867
 868     const wxRichTextRange& GetRange() const { return m_range; }
 869     void SetRange(const wxRichTextRange& range) { m_range = range; }
 870
 871     wxChar GetCharacter() const { return m_char; }
 872     void SetCharacter(wxChar ch) { m_char = ch; }
 873
 874     virtual wxEvent *Clone() const { return new wxRichTextEvent(*this); }
 875
 876 protected:
 877     int                     m_flags;
 878     long                    m_position;
 879     wxRichTextStyleSheet*   m_oldStyleSheet;
 880     wxRichTextStyleSheet*   m_newStyleSheet;
 881     wxRichTextRange         m_range;
 882     wxChar                  m_char;
 883
 884 private:
 885     DECLARE_DYNAMIC_CLASS_NO_ASSIGN(wxRichTextEvent)
 886 };
 887
 888 /*!
 889  * wxRichTextCtrl event macros
 890  */
 891
 892 BEGIN_DECLARE_EVENT_TYPES()
 893     DECLARE_EXPORTED_EVENT_TYPE(WXDLLIMPEXP_RICHTEXT, wxEVT_COMMAND_RICHTEXT_LEFT_CLICK, 2602)
 894     DECLARE_EXPORTED_EVENT_TYPE(WXDLLIMPEXP_RICHTEXT, wxEVT_COMMAND_RICHTEXT_RIGHT_CLICK, 2603)
 895     DECLARE_EXPORTED_EVENT_TYPE(WXDLLIMPEXP_RICHTEXT, wxEVT_COMMAND_RICHTEXT_MIDDLE_CLICK, 2604)
 896     DECLARE_EXPORTED_EVENT_TYPE(WXDLLIMPEXP_RICHTEXT, wxEVT_COMMAND_RICHTEXT_LEFT_DCLICK, 2605)
 897     DECLARE_EXPORTED_EVENT_TYPE(WXDLLIMPEXP_RICHTEXT, wxEVT_COMMAND_RICHTEXT_RETURN, 2606)
 898     DECLARE_EXPORTED_EVENT_TYPE(WXDLLIMPEXP_RICHTEXT, wxEVT_COMMAND_RICHTEXT_CHARACTER, 2607)
 899     DECLARE_EXPORTED_EVENT_TYPE(WXDLLIMPEXP_RICHTEXT, wxEVT_COMMAND_RICHTEXT_DELETE, 2608)
 900
 901     DECLARE_EXPORTED_EVENT_TYPE(WXDLLIMPEXP_RICHTEXT, wxEVT_COMMAND_RICHTEXT_STYLESHEET_CHANGING, 2609)
 902     DECLARE_EXPORTED_EVENT_TYPE(WXDLLIMPEXP_RICHTEXT, wxEVT_COMMAND_RICHTEXT_STYLESHEET_CHANGED, 2610)
 903     DECLARE_EXPORTED_EVENT_TYPE(WXDLLIMPEXP_RICHTEXT, wxEVT_COMMAND_RICHTEXT_STYLESHEET_REPLACING, 2611)
 904     DECLARE_EXPORTED_EVENT_TYPE(WXDLLIMPEXP_RICHTEXT, wxEVT_COMMAND_RICHTEXT_STYLESHEET_REPLACED, 2612)
 905
 906     DECLARE_EXPORTED_EVENT_TYPE(WXDLLIMPEXP_RICHTEXT, wxEVT_COMMAND_RICHTEXT_CONTENT_INSERTED, 2613)
 907     DECLARE_EXPORTED_EVENT_TYPE(WXDLLIMPEXP_RICHTEXT, wxEVT_COMMAND_RICHTEXT_CONTENT_DELETED, 2614)
 908     DECLARE_EXPORTED_EVENT_TYPE(WXDLLIMPEXP_RICHTEXT, wxEVT_COMMAND_RICHTEXT_STYLE_CHANGED, 2615)
 909     DECLARE_EXPORTED_EVENT_TYPE(WXDLLIMPEXP_RICHTEXT, wxEVT_COMMAND_RICHTEXT_SELECTION_CHANGED, 2616)
 910 END_DECLARE_EVENT_TYPES()
 911
 912 typedef void (wxEvtHandler::*wxRichTextEventFunction)(wxRichTextEvent&);
 913
 914 #define EVT_RICHTEXT_LEFT_CLICK(id, fn) DECLARE_EVENT_TABLE_ENTRY( wxEVT_COMMAND_RICHTEXT_LEFT_CLICK, id, -1, (wxObjectEventFunction) (wxEventFunction)  wxStaticCastEvent( wxRichTextEventFunction, & fn ), NULL ),
 915 #define EVT_RICHTEXT_RIGHT_CLICK(id, fn) DECLARE_EVENT_TABLE_ENTRY( wxEVT_COMMAND_RICHTEXT_RIGHT_CLICK, id, -1, (wxObjectEventFunction) (wxEventFunction)  wxStaticCastEvent( wxRichTextEventFunction, & fn ), NULL ),
 916 #define EVT_RICHTEXT_MIDDLE_CLICK(id, fn) DECLARE_EVENT_TABLE_ENTRY( wxEVT_COMMAND_RICHTEXT_MIDDLE_CLICK, id, -1, (wxObjectEventFunction) (wxEventFunction)  wxStaticCastEvent( wxRichTextEventFunction, & fn ), NULL ),
 917 #define EVT_RICHTEXT_LEFT_DCLICK(id, fn) DECLARE_EVENT_TABLE_ENTRY( wxEVT_COMMAND_RICHTEXT_LEFT_DCLICK, id, -1, (wxObjectEventFunction) (wxEventFunction)  wxStaticCastEvent( wxRichTextEventFunction, & fn ), NULL ),
 918 #define EVT_RICHTEXT_RETURN(id, fn) DECLARE_EVENT_TABLE_ENTRY( wxEVT_COMMAND_RICHTEXT_RETURN, id, -1, (wxObjectEventFunction) (wxEventFunction)  wxStaticCastEvent( wxRichTextEventFunction, & fn ), NULL ),
 919 #define EVT_RICHTEXT_CHARACTER(id, fn) DECLARE_EVENT_TABLE_ENTRY( wxEVT_COMMAND_RICHTEXT_CHARACTER, id, -1, (wxObjectEventFunction) (wxEventFunction)  wxStaticCastEvent( wxRichTextEventFunction, & fn ), NULL ),
 920 #define EVT_RICHTEXT_DELETE(id, fn) DECLARE_EVENT_TABLE_ENTRY( wxEVT_COMMAND_RICHTEXT_DELETE, id, -1, (wxObjectEventFunction) (wxEventFunction)  wxStaticCastEvent( wxRichTextEventFunction, & fn ), NULL ),
 921
 922 #define EVT_RICHTEXT_STYLESHEET_CHANGING(id, fn) DECLARE_EVENT_TABLE_ENTRY( wxEVT_COMMAND_RICHTEXT_STYLESHEET_CHANGING, id, -1, (wxObjectEventFunction) (wxEventFunction)  wxStaticCastEvent( wxRichTextEventFunction, & fn ), NULL ),
 923 #define EVT_RICHTEXT_STYLESHEET_CHANGED(id, fn) DECLARE_EVENT_TABLE_ENTRY( wxEVT_COMMAND_RICHTEXT_STYLESHEET_CHANGED, id, -1, (wxObjectEventFunction) (wxEventFunction)  wxStaticCastEvent( wxRichTextEventFunction, & fn ), NULL ),
 924 #define EVT_RICHTEXT_STYLESHEET_REPLACING(id, fn) DECLARE_EVENT_TABLE_ENTRY( wxEVT_COMMAND_RICHTEXT_STYLESHEET_REPLACING, id, -1, (wxObjectEventFunction) (wxEventFunction)  wxStaticCastEvent( wxRichTextEventFunction, & fn ), NULL ),
 925 #define EVT_RICHTEXT_STYLESHEET_REPLACED(id, fn) DECLARE_EVENT_TABLE_ENTRY( wxEVT_COMMAND_RICHTEXT_STYLESHEET_REPLACED, id, -1, (wxObjectEventFunction) (wxEventFunction)  wxStaticCastEvent( wxRichTextEventFunction, & fn ), NULL ),
 926
 927 #define EVT_RICHTEXT_CONTENT_INSERTED(id, fn) DECLARE_EVENT_TABLE_ENTRY( wxEVT_COMMAND_RICHTEXT_CONTENT_INSERTED, id, -1, (wxObjectEventFunction) (wxEventFunction)  wxStaticCastEvent( wxRichTextEventFunction, & fn ), NULL ),
 928 #define EVT_RICHTEXT_CONTENT_DELETED(id, fn) DECLARE_EVENT_TABLE_ENTRY( wxEVT_COMMAND_RICHTEXT_CONTENT_DELETED, id, -1, (wxObjectEventFunction) (wxEventFunction)  wxStaticCastEvent( wxRichTextEventFunction, & fn ), NULL ),
 929 #define EVT_RICHTEXT_STYLE_CHANGED(id, fn) DECLARE_EVENT_TABLE_ENTRY( wxEVT_COMMAND_RICHTEXT_STYLE_CHANGED, id, -1, (wxObjectEventFunction) (wxEventFunction)  wxStaticCastEvent( wxRichTextEventFunction, & fn ), NULL ),
 930 #define EVT_RICHTEXT_SELECTION_CHANGED(id, fn) DECLARE_EVENT_TABLE_ENTRY( wxEVT_COMMAND_RICHTEXT_SELECTION_CHANGED, id, -1, (wxObjectEventFunction) (wxEventFunction)  wxStaticCastEvent( wxRichTextEventFunction, & fn ), NULL ),
 931
 932 #endif
 933     // wxUSE_RICHTEXT
 934
 935 #endif
 936     // _WX_RICHTEXTCTRL_H_