include/wx/richtext/richtextbuffer.h

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        wx/richtext/richtextbuffer.h
   3 // Purpose:     Buffer for wxRichTextCtrl
   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_RICHTEXTBUFFER_H_
  13 #define _WX_RICHTEXTBUFFER_H_
  14
  15 /*
  16
  17   Data structures
  18   ===============
  19
  20   Data is represented by a hierarchy of objects, all derived from
  21   wxRichTextObject.
  22
  23   The top of the hierarchy is the buffer, a kind of wxRichTextParagraphLayoutBox.
  24   These boxes will allow flexible placement of text boxes on a page, but
  25   for now there is a single box representing the document, and this box is
  26   a wxRichTextParagraphLayoutBox which contains further wxRichTextParagraph
  27   objects, each of which can include text and images.
  28
  29   Each object maintains a range (start and end position) measured
  30   from the start of the main parent box.
  31   A paragraph object knows its range, and a text fragment knows its range
  32   too. So, a character or image in a page has a position relative to the
  33   start of the document, and a character in an embedded text box has
  34   a position relative to that text box. For now, we will not be dealing with
  35   embedded objects but it's something to bear in mind for later.
  36
  37   Note that internally, a range (5,5) represents a range of one character.
  38   In the public wx[Rich]TextCtrl API, this would be passed to e.g. SetSelection
  39   as (5,6). A paragraph with one character might have an internal range of (0, 1)
  40   since the end of the paragraph takes up one position.
  41
  42   Layout
  43   ======
  44
  45   When Layout is called on an object, it is given a size which the object
  46   must limit itself to, or one or more flexible directions (vertical
  47   or horizontal). So for example a centered paragraph is given the page
  48   width to play with (minus any margins), but can extend indefinitely
  49   in the vertical direction. The implementation of Layout can then
  50   cache the calculated size and position within the parent.
  51
  52  */
  53
  54 /*!
  55  * Includes
  56  */
  57
  58 #include "wx/defs.h"
  59
  60 #if wxUSE_RICHTEXT
  61
  62 #include "wx/list.h"
  63 #include "wx/textctrl.h"
  64 #include "wx/bitmap.h"
  65 #include "wx/image.h"
  66 #include "wx/cmdproc.h"
  67 #include "wx/txtstrm.h"
  68
  69 #if wxUSE_DATAOBJ
  70 #include "wx/dataobj.h"
  71 #endif
  72
  73 // Experimental dynamic styles to avoid user-specific character styles from being
  74 // overwritten by paragraph styles.
  75 #define wxRICHTEXT_USE_DYNAMIC_STYLES 1
  76
  77 /*!
  78  * File types
  79  */
  80
  81 #define wxRICHTEXT_TYPE_ANY             0
  82 #define wxRICHTEXT_TYPE_TEXT            1
  83 #define wxRICHTEXT_TYPE_XML             2
  84 #define wxRICHTEXT_TYPE_HTML            3
  85 #define wxRICHTEXT_TYPE_RTF             4
  86 #define wxRICHTEXT_TYPE_PDF             5
  87
  88 /*!
  89  * Forward declarations
  90  */
  91
  92 class WXDLLIMPEXP_RICHTEXT wxRichTextCtrl;
  93 class WXDLLIMPEXP_RICHTEXT wxRichTextObject;
  94 class WXDLLIMPEXP_RICHTEXT wxRichTextCacheObject;
  95 class WXDLLIMPEXP_RICHTEXT wxRichTextObjectList;
  96 class WXDLLIMPEXP_RICHTEXT wxRichTextLine;
  97 class WXDLLIMPEXP_RICHTEXT wxRichTextParagraph;
  98 class WXDLLIMPEXP_RICHTEXT wxRichTextFileHandler;
  99 class WXDLLIMPEXP_RICHTEXT wxRichTextStyleSheet;
 100 class WXDLLIMPEXP_RICHTEXT wxTextAttrEx;
 101 class WXDLLIMPEXP_RICHTEXT wxRichTextListStyleDefinition;
 102 class WXDLLIMPEXP_RICHTEXT wxRichTextEvent;
 103 class WXDLLIMPEXP_RICHTEXT wxRichTextRenderer;
 104
 105 /*!
 106  * Flags determining the available space, passed to Layout
 107  */
 108
 109 #define wxRICHTEXT_FIXED_WIDTH      0x01
 110 #define wxRICHTEXT_FIXED_HEIGHT     0x02
 111 #define wxRICHTEXT_VARIABLE_WIDTH   0x04
 112 #define wxRICHTEXT_VARIABLE_HEIGHT  0x08
 113
 114 // Only lay out the part of the buffer that lies within
 115 // the rect passed to Layout.
 116 #define wxRICHTEXT_LAYOUT_SPECIFIED_RECT 0x10
 117
 118 /*!
 119  * Flags returned from hit-testing
 120  */
 121
 122 // The point was not on this object
 123 #define wxRICHTEXT_HITTEST_NONE     0x01
 124 // The point was before the position returned from HitTest
 125 #define wxRICHTEXT_HITTEST_BEFORE   0x02
 126 // The point was after the position returned from HitTest
 127 #define wxRICHTEXT_HITTEST_AFTER    0x04
 128 // The point was on the position returned from HitTest
 129 #define wxRICHTEXT_HITTEST_ON       0x08
 130
 131 /*!
 132  * Flags for GetRangeSize
 133  */
 134
 135 #define wxRICHTEXT_FORMATTED        0x01
 136 #define wxRICHTEXT_UNFORMATTED      0x02
 137
 138 /*!
 139  * Flags for SetStyle/SetListStyle
 140  */
 141
 142 #define wxRICHTEXT_SETSTYLE_NONE            0x00
 143
 144 // Specifies that this operation should be undoable
 145 #define wxRICHTEXT_SETSTYLE_WITH_UNDO       0x01
 146
 147 // Specifies that the style should not be applied if the
 148 // combined style at this point is already the style in question.
 149 #define wxRICHTEXT_SETSTYLE_OPTIMIZE        0x02
 150
 151 // Specifies that the style should only be applied to paragraphs,
 152 // and not the content. This allows content styling to be
 153 // preserved independently from that of e.g. a named paragraph style.
 154 #define wxRICHTEXT_SETSTYLE_PARAGRAPHS_ONLY 0x04
 155
 156 // Specifies that the style should only be applied to characters,
 157 // and not the paragraph. This allows content styling to be
 158 // preserved independently from that of e.g. a named paragraph style.
 159 #define wxRICHTEXT_SETSTYLE_CHARACTERS_ONLY 0x08
 160
 161 // For SetListStyle only: specifies starting from the given number, otherwise
 162 // deduces number from existing attributes
 163 #define wxRICHTEXT_SETSTYLE_RENUMBER        0x10
 164
 165 // For SetListStyle only: specifies the list level for all paragraphs, otherwise
 166 // the current indentation will be used
 167 #define wxRICHTEXT_SETSTYLE_SPECIFY_LEVEL   0x20
 168
 169 /*!
 170  * Flags for text insertion
 171  */
 172
 173 #define wxRICHTEXT_INSERT_NONE                              0x00
 174 #define wxRICHTEXT_INSERT_WITH_PREVIOUS_PARAGRAPH_STYLE     0x01
 175
 176 /*!
 177  * Extra formatting flags not in wxTextAttr
 178  */
 179
 180 #define wxTEXT_ATTR_PARA_SPACING_AFTER      0x00000800
 181 #define wxTEXT_ATTR_PARA_SPACING_BEFORE     0x00001000
 182 #define wxTEXT_ATTR_LINE_SPACING            0x00002000
 183 #define wxTEXT_ATTR_CHARACTER_STYLE_NAME    0x00004000
 184 #define wxTEXT_ATTR_PARAGRAPH_STYLE_NAME    0x00008000
 185 #define wxTEXT_ATTR_LIST_STYLE_NAME         0x00010000
 186 #define wxTEXT_ATTR_BULLET_STYLE            0x00020000
 187 #define wxTEXT_ATTR_BULLET_NUMBER           0x00040000
 188 #define wxTEXT_ATTR_BULLET_TEXT             0x00080000
 189 #define wxTEXT_ATTR_BULLET_NAME             0x00100000
 190 #define wxTEXT_ATTR_URL                     0x00200000
 191
 192 /*!
 193  * Styles for wxTextAttrEx::SetBulletStyle
 194  */
 195
 196 #define wxTEXT_ATTR_BULLET_STYLE_NONE               0x00000000
 197 #define wxTEXT_ATTR_BULLET_STYLE_ARABIC             0x00000001
 198 #define wxTEXT_ATTR_BULLET_STYLE_LETTERS_UPPER      0x00000002
 199 #define wxTEXT_ATTR_BULLET_STYLE_LETTERS_LOWER      0x00000004
 200 #define wxTEXT_ATTR_BULLET_STYLE_ROMAN_UPPER        0x00000008
 201 #define wxTEXT_ATTR_BULLET_STYLE_ROMAN_LOWER        0x00000010
 202 #define wxTEXT_ATTR_BULLET_STYLE_SYMBOL             0x00000020
 203 #define wxTEXT_ATTR_BULLET_STYLE_BITMAP             0x00000040
 204 #define wxTEXT_ATTR_BULLET_STYLE_PARENTHESES        0x00000080
 205 #define wxTEXT_ATTR_BULLET_STYLE_PERIOD             0x00000100
 206 #define wxTEXT_ATTR_BULLET_STYLE_STANDARD           0x00000200
 207 #define wxTEXT_ATTR_BULLET_STYLE_RIGHT_PARENTHESIS  0x00000400
 208 #define wxTEXT_ATTR_BULLET_STYLE_OUTLINE            0x00000800
 209
 210 #define wxTEXT_ATTR_BULLET_STYLE_ALIGN_LEFT         0x00000000
 211 #define wxTEXT_ATTR_BULLET_STYLE_ALIGN_RIGHT        0x00001000
 212 #define wxTEXT_ATTR_BULLET_STYLE_ALIGN_CENTRE       0x00002000
 213
 214 /*!
 215  * Line spacing values
 216  */
 217
 218 #define wxTEXT_ATTR_LINE_SPACING_NORMAL         10
 219 #define wxTEXT_ATTR_LINE_SPACING_HALF           15
 220 #define wxTEXT_ATTR_LINE_SPACING_TWICE          20
 221
 222 /*!
 223  * Character and paragraph combined styles
 224  */
 225
 226 #define wxTEXT_ATTR_CHARACTER (wxTEXT_ATTR_FONT | wxTEXT_ATTR_BACKGROUND_COLOUR | wxTEXT_ATTR_TEXT_COLOUR | wxTEXT_ATTR_CHARACTER_STYLE_NAME | wxTEXT_ATTR_URL)
 227
 228 #define wxTEXT_ATTR_PARAGRAPH (wxTEXT_ATTR_ALIGNMENT|wxTEXT_ATTR_LEFT_INDENT|wxTEXT_ATTR_RIGHT_INDENT|wxTEXT_ATTR_TABS|\
 229     wxTEXT_ATTR_PARA_SPACING_BEFORE|wxTEXT_ATTR_PARA_SPACING_AFTER|wxTEXT_ATTR_LINE_SPACING|\
 230     wxTEXT_ATTR_BULLET_STYLE|wxTEXT_ATTR_BULLET_NUMBER|wxTEXT_ATTR_BULLET_TEXT|wxTEXT_ATTR_BULLET_NAME|\
 231     wxTEXT_ATTR_PARAGRAPH_STYLE_NAME|wxTEXT_ATTR_LIST_STYLE_NAME)
 232
 233 #define wxTEXT_ATTR_ALL (wxTEXT_ATTR_CHARACTER|wxTEXT_ATTR_PARAGRAPH)
 234
 235 /*!
 236  * wxRichTextRange class declaration
 237  * This stores beginning and end positions for a range of data.
 238  */
 239
 240 class WXDLLIMPEXP_RICHTEXT wxRichTextRange
 241 {
 242 public:
 243 // Constructors
 244
 245     wxRichTextRange() { m_start = 0; m_end = 0; }
 246     wxRichTextRange(long start, long end) { m_start = start; m_end = end; }
 247     wxRichTextRange(const wxRichTextRange& range) { m_start = range.m_start; m_end = range.m_end; }
 248     ~wxRichTextRange() {}
 249
 250     void operator =(const wxRichTextRange& range) { m_start = range.m_start; m_end = range.m_end; }
 251     bool operator ==(const wxRichTextRange& range) const { return (m_start == range.m_start && m_end == range.m_end); }
 252     bool operator !=(const wxRichTextRange& range) const { return (m_start != range.m_start && m_end != range.m_end); }
 253     wxRichTextRange operator -(const wxRichTextRange& range) const { return wxRichTextRange(m_start - range.m_start, m_end - range.m_end); }
 254     wxRichTextRange operator +(const wxRichTextRange& range) const { return wxRichTextRange(m_start + range.m_start, m_end + range.m_end); }
 255
 256     void SetRange(long start, long end) { m_start = start; m_end = end; }
 257
 258     void SetStart(long start) { m_start = start; }
 259     long GetStart() const { return m_start; }
 260
 261     void SetEnd(long end) { m_end = end; }
 262     long GetEnd() const { return m_end; }
 263
 264     /// Returns true if this range is completely outside 'range'
 265     bool IsOutside(const wxRichTextRange& range) const { return range.m_start > m_end || range.m_end < m_start; }
 266
 267     /// Returns true if this range is completely within 'range'
 268     bool IsWithin(const wxRichTextRange& range) const { return m_start >= range.m_start && m_end <= range.m_end; }
 269
 270     /// Returns true if the given position is within this range. Allow
 271     /// for the possibility of an empty range - assume the position
 272     /// is within this empty range. NO, I think we should not match with an empty range.
 273     // bool Contains(long pos) const { return pos >= m_start && (pos <= m_end || GetLength() == 0); }
 274     bool Contains(long pos) const { return pos >= m_start && pos <= m_end ; }
 275
 276     /// Limit this range to be within 'range'
 277     bool LimitTo(const wxRichTextRange& range) ;
 278
 279     /// Gets the length of the range
 280     long GetLength() const { return m_end - m_start + 1; }
 281
 282     /// Swaps the start and end
 283     void Swap() { long tmp = m_start; m_start = m_end; m_end = tmp; }
 284
 285     /// Convert to internal form: (n, n) is the range of a single character.
 286     wxRichTextRange ToInternal() const { return wxRichTextRange(m_start, m_end-1); }
 287
 288     /// Convert from internal to public API form: (n, n+1) is the range of a single character.
 289     wxRichTextRange FromInternal() const { return wxRichTextRange(m_start, m_end+1); }
 290
 291 protected:
 292     long m_start;
 293     long m_end;
 294 };
 295
 296 #define wxRICHTEXT_ALL  wxRichTextRange(-2, -2)
 297 #define wxRICHTEXT_NONE  wxRichTextRange(-1, -1)
 298
 299 /*!
 300  * wxTextAttrEx is an extended version of wxTextAttr with more paragraph attributes.
 301  */
 302
 303 class WXDLLIMPEXP_RICHTEXT wxTextAttrEx: public wxTextAttr
 304 {
 305 public:
 306     // ctors
 307     wxTextAttrEx(const wxTextAttrEx& attr);
 308     wxTextAttrEx(const wxTextAttr& attr) { Init(); (*this) = attr; }
 309     wxTextAttrEx() { Init(); }
 310
 311     // Initialise this object
 312     void Init();
 313
 314     // Copy
 315     void Copy(const wxTextAttrEx& attr);
 316
 317     // Assignment from a wxTextAttrEx object
 318     void operator= (const wxTextAttrEx& attr);
 319
 320     // Assignment from a wxTextAttr object
 321     void operator= (const wxTextAttr& attr);
 322
 323     // Equality test
 324     bool operator== (const wxTextAttrEx& attr) const;
 325
 326     // setters
 327     void SetCharacterStyleName(const wxString& name) { m_characterStyleName = name; SetFlags(GetFlags() | wxTEXT_ATTR_CHARACTER_STYLE_NAME); }
 328     void SetParagraphStyleName(const wxString& name) { m_paragraphStyleName = name; SetFlags(GetFlags() | wxTEXT_ATTR_PARAGRAPH_STYLE_NAME); }
 329     void SetListStyleName(const wxString& name) { m_listStyleName = name; SetFlags(GetFlags() | wxTEXT_ATTR_LIST_STYLE_NAME); }
 330     void SetParagraphSpacingAfter(int spacing) { m_paragraphSpacingAfter = spacing; SetFlags(GetFlags() | wxTEXT_ATTR_PARA_SPACING_AFTER); }
 331     void SetParagraphSpacingBefore(int spacing) { m_paragraphSpacingBefore = spacing; SetFlags(GetFlags() | wxTEXT_ATTR_PARA_SPACING_BEFORE); }
 332     void SetLineSpacing(int spacing) { m_lineSpacing = spacing; SetFlags(GetFlags() | wxTEXT_ATTR_LINE_SPACING); }
 333     void SetBulletStyle(int style) { m_bulletStyle = style; SetFlags(GetFlags() | wxTEXT_ATTR_BULLET_STYLE); }
 334     void SetBulletNumber(int n) { m_bulletNumber = n; SetFlags(GetFlags() | wxTEXT_ATTR_BULLET_NUMBER); }
 335     void SetBulletText(const wxString& text) { m_bulletText = text; SetFlags(GetFlags() | wxTEXT_ATTR_BULLET_TEXT); }
 336     void SetBulletName(const wxString& name) { m_bulletName = name; SetFlags(GetFlags() | wxTEXT_ATTR_BULLET_NAME); }
 337     void SetBulletFont(const wxString& bulletFont) { m_bulletFont = bulletFont; }
 338     void SetURL(const wxString& url) { m_urlTarget = url; SetFlags(GetFlags() | wxTEXT_ATTR_URL); }
 339
 340     const wxString& GetCharacterStyleName() const { return m_characterStyleName; }
 341     const wxString& GetParagraphStyleName() const { return m_paragraphStyleName; }
 342     const wxString& GetListStyleName() const { return m_listStyleName; }
 343     int GetParagraphSpacingAfter() const { return m_paragraphSpacingAfter; }
 344     int GetParagraphSpacingBefore() const { return m_paragraphSpacingBefore; }
 345     int GetLineSpacing() const { return m_lineSpacing; }
 346     int GetBulletStyle() const { return m_bulletStyle; }
 347     int GetBulletNumber() const { return m_bulletNumber; }
 348     const wxString& GetBulletText() const { return m_bulletText; }
 349     const wxString& GetBulletName() const { return m_bulletName; }
 350     const wxString& GetBulletFont() const { return m_bulletFont; }
 351     const wxString& GetURL() const { return m_urlTarget; }
 352
 353     bool HasWeight() const { return (GetFlags() & wxTEXT_ATTR_FONT_WEIGHT) != 0; }
 354     bool HasSize() const { return (GetFlags() & wxTEXT_ATTR_FONT_SIZE) != 0; }
 355     bool HasItalic() const { return (GetFlags() & wxTEXT_ATTR_FONT_ITALIC) != 0; }
 356     bool HasUnderlined() const { return (GetFlags() & wxTEXT_ATTR_FONT_UNDERLINE) != 0; }
 357     bool HasFaceName() const { return (GetFlags() & wxTEXT_ATTR_FONT_FACE) != 0; }
 358
 359     bool HasParagraphSpacingAfter() const { return HasFlag(wxTEXT_ATTR_PARA_SPACING_AFTER); }
 360     bool HasParagraphSpacingBefore() const { return HasFlag(wxTEXT_ATTR_PARA_SPACING_BEFORE); }
 361     bool HasLineSpacing() const { return HasFlag(wxTEXT_ATTR_LINE_SPACING); }
 362     bool HasCharacterStyleName() const { return HasFlag(wxTEXT_ATTR_CHARACTER_STYLE_NAME) || !m_characterStyleName.IsEmpty(); }
 363     bool HasParagraphStyleName() const { return HasFlag(wxTEXT_ATTR_PARAGRAPH_STYLE_NAME) || !m_paragraphStyleName.IsEmpty(); }
 364     bool HasListStyleName() const { return HasFlag(wxTEXT_ATTR_LIST_STYLE_NAME) || !m_listStyleName.IsEmpty(); }
 365     bool HasBulletStyle() const { return HasFlag(wxTEXT_ATTR_BULLET_STYLE); }
 366     bool HasBulletNumber() const { return HasFlag(wxTEXT_ATTR_BULLET_NUMBER); }
 367     bool HasBulletText() const { return HasFlag(wxTEXT_ATTR_BULLET_TEXT); }
 368     bool HasBulletName() const { return HasFlag(wxTEXT_ATTR_BULLET_NAME); }
 369     bool HasURL() const { return HasFlag(wxTEXT_ATTR_URL); }
 370
 371     // Is this a character style?
 372     bool IsCharacterStyle() const { return (0 != (GetFlags() & wxTEXT_ATTR_CHARACTER)); }
 373     bool IsParagraphStyle() const { return (0 != (GetFlags() & wxTEXT_ATTR_PARAGRAPH)); }
 374
 375     // returns false if we have any attributes set, true otherwise
 376     bool IsDefault() const
 377     {
 378         return !HasTextColour() && !HasBackgroundColour() && !HasFont() && !HasAlignment() &&
 379                !HasTabs() && !HasLeftIndent() && !HasRightIndent() &&
 380                !HasParagraphSpacingAfter() && !HasParagraphSpacingBefore() && !HasLineSpacing() &&
 381                !HasCharacterStyleName() && !HasParagraphStyleName() && !HasListStyleName() &&
 382                !HasBulletNumber() && !HasBulletStyle() && !HasBulletText() && !HasBulletName() && !HasURL();
 383     }
 384
 385     // return the attribute having the valid font and colours: it uses the
 386     // attributes set in attr and falls back first to attrDefault and then to
 387     // the text control font/colours for those attributes which are not set
 388     static wxTextAttrEx CombineEx(const wxTextAttrEx& attr,
 389                               const wxTextAttrEx& attrDef,
 390                               const wxTextCtrlBase *text);
 391
 392 private:
 393     // Paragraph styles
 394     int                 m_paragraphSpacingAfter;
 395     int                 m_paragraphSpacingBefore;
 396     int                 m_lineSpacing;
 397     int                 m_bulletStyle;
 398     int                 m_bulletNumber;
 399     wxString            m_bulletText;
 400     wxString            m_bulletFont;
 401     wxString            m_bulletName;
 402     wxString            m_urlTarget;
 403
 404     // Character style
 405     wxString            m_characterStyleName;
 406
 407     // Paragraph style
 408     wxString            m_paragraphStyleName;
 409
 410     // List style
 411     wxString            m_listStyleName;
 412 };
 413
 414 /*!
 415  * wxRichTextAttr stores attributes without a wxFont object, so is a much more
 416  * efficient way to query styles.
 417  */
 418
 419 class WXDLLIMPEXP_RICHTEXT wxRichTextAttr
 420 {
 421 public:
 422     // ctors
 423     wxRichTextAttr(const wxTextAttrEx& attr);
 424     wxRichTextAttr(const wxRichTextAttr& attr);
 425     wxRichTextAttr() { Init(); }
 426     wxRichTextAttr(const wxColour& colText,
 427                const wxColour& colBack = wxNullColour,
 428                wxTextAttrAlignment alignment = wxTEXT_ALIGNMENT_DEFAULT);
 429
 430     // Initialise this object.
 431     void Init();
 432
 433     // Copy
 434     void Copy(const wxRichTextAttr& attr);
 435
 436     // Assignment from a wxRichTextAttr object.
 437     void operator= (const wxRichTextAttr& attr);
 438
 439     // Assignment from a wxTextAttrEx object.
 440     void operator= (const wxTextAttrEx& attr);
 441
 442     // Equality test
 443     bool operator== (const wxRichTextAttr& attr) const;
 444
 445     // Making a wxTextAttrEx object.
 446     operator wxTextAttrEx () const ;
 447
 448     // Copy to a wxTextAttr
 449     void CopyTo(wxTextAttrEx& attr) const;
 450
 451     // Create font from font attributes.
 452     wxFont CreateFont() const;
 453
 454     // Get attributes from font.
 455     bool GetFontAttributes(const wxFont& font);
 456
 457     // setters
 458     void SetTextColour(const wxColour& colText) { m_colText = colText; m_flags |= wxTEXT_ATTR_TEXT_COLOUR; }
 459     void SetBackgroundColour(const wxColour& colBack) { m_colBack = colBack; m_flags |= wxTEXT_ATTR_BACKGROUND_COLOUR; }
 460     void SetAlignment(wxTextAttrAlignment alignment) { m_textAlignment = alignment; m_flags |= wxTEXT_ATTR_ALIGNMENT; }
 461     void SetTabs(const wxArrayInt& tabs) { m_tabs = tabs; m_flags |= wxTEXT_ATTR_TABS; }
 462     void SetLeftIndent(int indent, int subIndent = 0) { m_leftIndent = indent; m_leftSubIndent = subIndent; m_flags |= wxTEXT_ATTR_LEFT_INDENT; }
 463     void SetRightIndent(int indent) { m_rightIndent = indent; m_flags |= wxTEXT_ATTR_RIGHT_INDENT; }
 464
 465     void SetFontSize(int pointSize) { m_fontSize = pointSize; m_flags |= wxTEXT_ATTR_FONT_SIZE; }
 466     void SetFontStyle(int fontStyle) { m_fontStyle = fontStyle; m_flags |= wxTEXT_ATTR_FONT_ITALIC; }
 467     void SetFontWeight(int fontWeight) { m_fontWeight = fontWeight; m_flags |= wxTEXT_ATTR_FONT_WEIGHT; }
 468     void SetFontFaceName(const wxString& faceName) { m_fontFaceName = faceName; m_flags |= wxTEXT_ATTR_FONT_FACE; }
 469     void SetFontUnderlined(bool underlined) { m_fontUnderlined = underlined; m_flags |= wxTEXT_ATTR_FONT_UNDERLINE; }
 470
 471     void SetFlags(long flags) { m_flags = flags; }
 472
 473     void SetCharacterStyleName(const wxString& name) { m_characterStyleName = name; m_flags |= wxTEXT_ATTR_CHARACTER_STYLE_NAME; }
 474     void SetParagraphStyleName(const wxString& name) { m_paragraphStyleName = name; m_flags |= wxTEXT_ATTR_PARAGRAPH_STYLE_NAME; }
 475     void SetListStyleName(const wxString& name) { m_listStyleName = name; SetFlags(GetFlags() | wxTEXT_ATTR_LIST_STYLE_NAME); }
 476     void SetParagraphSpacingAfter(int spacing) { m_paragraphSpacingAfter = spacing; m_flags |= wxTEXT_ATTR_PARA_SPACING_AFTER; }
 477     void SetParagraphSpacingBefore(int spacing) { m_paragraphSpacingBefore = spacing; m_flags |= wxTEXT_ATTR_PARA_SPACING_BEFORE; }
 478     void SetLineSpacing(int spacing) { m_lineSpacing = spacing; m_flags |= wxTEXT_ATTR_LINE_SPACING; }
 479     void SetBulletStyle(int style) { m_bulletStyle = style; m_flags |= wxTEXT_ATTR_BULLET_STYLE; }
 480     void SetBulletNumber(int n) { m_bulletNumber = n; m_flags |= wxTEXT_ATTR_BULLET_NUMBER; }
 481     void SetBulletText(const wxString& text) { m_bulletText = text; m_flags |= wxTEXT_ATTR_BULLET_TEXT; }
 482     void SetBulletFont(const wxString& bulletFont) { m_bulletFont = bulletFont; }
 483     void SetBulletName(const wxString& name) { m_bulletName = name; m_flags |= wxTEXT_ATTR_BULLET_NAME; }
 484     void SetURL(const wxString& url) { m_urlTarget = url; m_flags |= wxTEXT_ATTR_URL; }
 485
 486     const wxColour& GetTextColour() const { return m_colText; }
 487     const wxColour& GetBackgroundColour() const { return m_colBack; }
 488     wxTextAttrAlignment GetAlignment() const { return m_textAlignment; }
 489     const wxArrayInt& GetTabs() const { return m_tabs; }
 490     long GetLeftIndent() const { return m_leftIndent; }
 491     long GetLeftSubIndent() const { return m_leftSubIndent; }
 492     long GetRightIndent() const { return m_rightIndent; }
 493     long GetFlags() const { return m_flags; }
 494
 495     int GetFontSize() const { return m_fontSize; }
 496     int GetFontStyle() const { return m_fontStyle; }
 497     int GetFontWeight() const { return m_fontWeight; }
 498     bool GetFontUnderlined() const { return m_fontUnderlined; }
 499     const wxString& GetFontFaceName() const { return m_fontFaceName; }
 500
 501     const wxString& GetCharacterStyleName() const { return m_characterStyleName; }
 502     const wxString& GetParagraphStyleName() const { return m_paragraphStyleName; }
 503     const wxString& GetListStyleName() const { return m_listStyleName; }
 504     int GetParagraphSpacingAfter() const { return m_paragraphSpacingAfter; }
 505     int GetParagraphSpacingBefore() const { return m_paragraphSpacingBefore; }
 506     int GetLineSpacing() const { return m_lineSpacing; }
 507     int GetBulletStyle() const { return m_bulletStyle; }
 508     int GetBulletNumber() const { return m_bulletNumber; }
 509     const wxString& GetBulletText() const { return m_bulletText; }
 510     const wxString& GetBulletFont() const { return m_bulletFont; }
 511     const wxString& GetBulletName() const { return m_bulletName; }
 512     const wxString& GetURL() const { return m_urlTarget; }
 513
 514     // accessors
 515     bool HasTextColour() const { return m_colText.Ok() && HasFlag(wxTEXT_ATTR_TEXT_COLOUR) ; }
 516     bool HasBackgroundColour() const { return m_colBack.Ok() && HasFlag(wxTEXT_ATTR_BACKGROUND_COLOUR) ; }
 517     bool HasAlignment() const { return (m_textAlignment != wxTEXT_ALIGNMENT_DEFAULT) || ((m_flags & wxTEXT_ATTR_ALIGNMENT) != 0) ; }
 518     bool HasTabs() const { return (m_flags & wxTEXT_ATTR_TABS) != 0 ; }
 519     bool HasLeftIndent() const { return (m_flags & wxTEXT_ATTR_LEFT_INDENT) != 0 ; }
 520     bool HasRightIndent() const { return (m_flags & wxTEXT_ATTR_RIGHT_INDENT) != 0 ; }
 521     bool HasWeight() const { return (m_flags & wxTEXT_ATTR_FONT_WEIGHT) != 0; }
 522     bool HasSize() const { return (m_flags & wxTEXT_ATTR_FONT_SIZE) != 0; }
 523     bool HasItalic() const { return (m_flags & wxTEXT_ATTR_FONT_ITALIC) != 0; }
 524     bool HasUnderlined() const { return (m_flags & wxTEXT_ATTR_FONT_UNDERLINE) != 0; }
 525     bool HasFaceName() const { return (m_flags & wxTEXT_ATTR_FONT_FACE) != 0; }
 526     bool HasFont() const { return (m_flags & (wxTEXT_ATTR_FONT)) != 0; }
 527
 528     bool HasParagraphSpacingAfter() const { return (m_flags & wxTEXT_ATTR_PARA_SPACING_AFTER) != 0; }
 529     bool HasParagraphSpacingBefore() const { return (m_flags & wxTEXT_ATTR_PARA_SPACING_BEFORE) != 0; }
 530     bool HasLineSpacing() const { return (m_flags & wxTEXT_ATTR_LINE_SPACING) != 0; }
 531     bool HasCharacterStyleName() const { return (m_flags & wxTEXT_ATTR_CHARACTER_STYLE_NAME) != 0 || !m_characterStyleName.IsEmpty(); }
 532     bool HasParagraphStyleName() const { return (m_flags & wxTEXT_ATTR_PARAGRAPH_STYLE_NAME) != 0 || !m_paragraphStyleName.IsEmpty(); }
 533     bool HasListStyleName() const { return HasFlag(wxTEXT_ATTR_LIST_STYLE_NAME) || !m_listStyleName.IsEmpty(); }
 534     bool HasBulletStyle() const { return (m_flags & wxTEXT_ATTR_BULLET_STYLE) != 0; }
 535     bool HasBulletNumber() const { return (m_flags & wxTEXT_ATTR_BULLET_NUMBER) != 0; }
 536     bool HasBulletText() const { return (m_flags & wxTEXT_ATTR_BULLET_TEXT) != 0; }
 537     bool HasBulletName() const { return (m_flags & wxTEXT_ATTR_BULLET_NAME) != 0; }
 538     bool HasURL() const { return HasFlag(wxTEXT_ATTR_URL); }
 539
 540     bool HasFlag(long flag) const { return (m_flags & flag) != 0; }
 541
 542     // Is this a character style?
 543     bool IsCharacterStyle() const { return (0 != (GetFlags() & wxTEXT_ATTR_CHARACTER)); }
 544     bool IsParagraphStyle() const { return (0 != (GetFlags() & wxTEXT_ATTR_PARAGRAPH)); }
 545
 546     // returns false if we have any attributes set, true otherwise
 547     bool IsDefault() const
 548     {
 549         return !HasTextColour() && !HasBackgroundColour() && !HasFont() && !HasAlignment() &&
 550                !HasTabs() && !HasLeftIndent() && !HasRightIndent() &&
 551                !HasParagraphSpacingAfter() && !HasParagraphSpacingBefore() && !HasLineSpacing() &&
 552                !HasCharacterStyleName() && !HasParagraphStyleName() && !HasListStyleName() &&
 553                !HasBulletNumber() && !HasBulletStyle() && !HasBulletText() && !HasBulletName() && !HasURL();
 554     }
 555
 556     // return the attribute having the valid font and colours: it uses the
 557     // attributes set in attr and falls back first to attrDefault and then to
 558     // the text control font/colours for those attributes which are not set
 559     static wxRichTextAttr Combine(const wxRichTextAttr& attr,
 560                               const wxRichTextAttr& attrDef,
 561                               const wxTextCtrlBase *text);
 562 private:
 563     long                m_flags;
 564
 565     // Paragraph styles
 566     wxArrayInt          m_tabs; // array of int: tab stops in 1/10 mm
 567     int                 m_leftIndent; // left indent in 1/10 mm
 568     int                 m_leftSubIndent; // left indent for all but the first
 569                                          // line in a paragraph relative to the
 570                                          // first line, in 1/10 mm
 571     int                 m_rightIndent; // right indent in 1/10 mm
 572     wxTextAttrAlignment m_textAlignment;
 573
 574     int                 m_paragraphSpacingAfter;
 575     int                 m_paragraphSpacingBefore;
 576     int                 m_lineSpacing;
 577     int                 m_bulletStyle;
 578     int                 m_bulletNumber;
 579     wxString            m_bulletText;
 580     wxString            m_bulletFont;
 581     wxString            m_bulletName;
 582     wxString            m_urlTarget;
 583
 584     // Character styles
 585     wxColour            m_colText,
 586                         m_colBack;
 587     int                 m_fontSize;
 588     int                 m_fontStyle;
 589     int                 m_fontWeight;
 590     bool                m_fontUnderlined;
 591     wxString            m_fontFaceName;
 592
 593     // Character style
 594     wxString            m_characterStyleName;
 595
 596     // Paragraph style
 597     wxString            m_paragraphStyleName;
 598
 599     // List style
 600     wxString            m_listStyleName;
 601 };
 602
 603 /*!
 604  * wxRichTextObject class declaration
 605  * This is the base for drawable objects.
 606  */
 607
 608 class WXDLLIMPEXP_RICHTEXT wxRichTextObject: public wxObject
 609 {
 610     DECLARE_CLASS(wxRichTextObject)
 611 public:
 612 // Constructors
 613
 614     wxRichTextObject(wxRichTextObject* parent = NULL);
 615     virtual ~wxRichTextObject();
 616
 617 // Overrideables
 618
 619     /// Draw the item, within the given range. Some objects may ignore the range (for
 620     /// example paragraphs) while others must obey it (lines, to implement wrapping)
 621     virtual bool Draw(wxDC& dc, const wxRichTextRange& range, const wxRichTextRange& selectionRange, const wxRect& rect, int descent, int style) = 0;
 622
 623     /// Lay the item out at the specified position with the given size constraint.
 624     /// Layout must set the cached size.
 625     virtual bool Layout(wxDC& dc, const wxRect& rect, int style) = 0;
 626
 627     /// Hit-testing: returns a flag indicating hit test details, plus
 628     /// information about position
 629     virtual int HitTest(wxDC& WXUNUSED(dc), const wxPoint& WXUNUSED(pt), long& WXUNUSED(textPosition)) { return false; }
 630
 631     /// Finds the absolute position and row height for the given character position
 632     virtual bool FindPosition(wxDC& WXUNUSED(dc), long WXUNUSED(index), wxPoint& WXUNUSED(pt), int* WXUNUSED(height), bool WXUNUSED(forceLineStart)) { return false; }
 633
 634     /// Get the best size, i.e. the ideal starting size for this object irrespective
 635     /// of available space. For a short text string, it will be the size that exactly encloses
 636     /// the text. For a longer string, it might use the parent width for example.
 637     virtual wxSize GetBestSize() const { return m_size; }
 638
 639     /// Get the object size for the given range. Returns false if the range
 640     /// is invalid for this object.
 641     virtual bool GetRangeSize(const wxRichTextRange& range, wxSize& size, int& descent, wxDC& dc, int flags, wxPoint position = wxPoint(0,0)) const  = 0;
 642
 643     /// Do a split, returning an object containing the second part, and setting
 644     /// the first part in 'this'.
 645     virtual wxRichTextObject* DoSplit(long WXUNUSED(pos)) { return NULL; }
 646
 647     /// Calculate range. By default, guess that the object is 1 unit long.
 648     virtual void CalculateRange(long start, long& end) { end = start ; m_range.SetRange(start, end); }
 649
 650     /// Delete range
 651     virtual bool DeleteRange(const wxRichTextRange& WXUNUSED(range)) { return false; }
 652
 653     /// Returns true if the object is empty
 654     virtual bool IsEmpty() const { return false; }
 655
 656     /// Get any text in this object for the given range
 657     virtual wxString GetTextForRange(const wxRichTextRange& WXUNUSED(range)) const { return wxEmptyString; }
 658
 659     /// Returns true if this object can merge itself with the given one.
 660     virtual bool CanMerge(wxRichTextObject* WXUNUSED(object)) const { return false; }
 661
 662     /// Returns true if this object merged itself with the given one.
 663     /// The calling code will then delete the given object.
 664     virtual bool Merge(wxRichTextObject* WXUNUSED(object)) { return false; }
 665
 666     /// Dump to output stream for debugging
 667     virtual void Dump(wxTextOutputStream& stream);
 668
 669 // Accessors
 670
 671     /// Get/set the cached object size as calculated by Layout.
 672     virtual wxSize GetCachedSize() const { return m_size; }
 673     virtual void SetCachedSize(const wxSize& sz) { m_size = sz; }
 674
 675     /// Get/set the object position
 676     virtual wxPoint GetPosition() const { return m_pos; }
 677     virtual void SetPosition(const wxPoint& pos) { m_pos = pos; }
 678
 679     /// Get the rectangle enclosing the object
 680     virtual wxRect GetRect() const { return wxRect(GetPosition(), GetCachedSize()); }
 681
 682     /// Set the range
 683     void SetRange(const wxRichTextRange& range) { m_range = range; }
 684
 685     /// Get the range
 686     const wxRichTextRange& GetRange() const { return m_range; }
 687     wxRichTextRange& GetRange() { return m_range; }
 688
 689     /// Get/set dirty flag (whether the object needs Layout to be called)
 690     virtual bool GetDirty() const { return m_dirty; }
 691     virtual void SetDirty(bool dirty) { m_dirty = dirty; }
 692
 693     /// Is this composite?
 694     virtual bool IsComposite() const { return false; }
 695
 696     /// Get/set the parent.
 697     virtual wxRichTextObject* GetParent() const { return m_parent; }
 698     virtual void SetParent(wxRichTextObject* parent) { m_parent = parent; }
 699
 700     /// Set the margin around the object
 701     virtual void SetMargins(int margin);
 702     virtual void SetMargins(int leftMargin, int rightMargin, int topMargin, int bottomMargin);
 703     virtual int GetLeftMargin() const { return m_leftMargin; }
 704     virtual int GetRightMargin() const { return m_rightMargin; }
 705     virtual int GetTopMargin() const { return m_topMargin; }
 706     virtual int GetBottomMargin() const { return m_bottomMargin; }
 707
 708     /// Set attributes object
 709     void SetAttributes(const wxTextAttrEx& attr) { m_attributes = attr; }
 710     const wxTextAttrEx& GetAttributes() const { return m_attributes; }
 711     wxTextAttrEx& GetAttributes() { return m_attributes; }
 712
 713     /// Set/get stored descent
 714     void SetDescent(int descent) { m_descent = descent; }
 715     int GetDescent() const { return m_descent; }
 716
 717 // Operations
 718
 719     /// Clone the object
 720     virtual wxRichTextObject* Clone() const { return NULL; }
 721
 722     /// Copy
 723     void Copy(const wxRichTextObject& obj);
 724
 725     /// Reference-counting allows us to use the same object in multiple
 726     /// lists (not yet used)
 727     void Reference() { m_refCount ++; }
 728     void Dereference();
 729
 730     /// Convert units in tends of a millimetre to device units
 731     static int ConvertTenthsMMToPixels(wxDC& dc, int units);
 732
 733 protected:
 734     wxSize                  m_size;
 735     wxPoint                 m_pos;
 736     int                     m_descent; // Descent for this object (if any)
 737     bool                    m_dirty;
 738     int                     m_refCount;
 739     wxRichTextObject*       m_parent;
 740
 741     /// The range of this object (start position to end position)
 742     wxRichTextRange         m_range;
 743
 744     /// Margins
 745     int                     m_leftMargin;
 746     int                     m_rightMargin;
 747     int                     m_topMargin;
 748     int                     m_bottomMargin;
 749
 750     /// Attributes
 751     wxTextAttrEx            m_attributes;
 752 };
 753
 754 WX_DECLARE_LIST_WITH_DECL( wxRichTextObject, wxRichTextObjectList, class WXDLLIMPEXP_RICHTEXT );
 755
 756 /*!
 757  * wxRichTextCompositeObject class declaration
 758  * Objects of this class can contain other objects.
 759  */
 760
 761 class WXDLLIMPEXP_RICHTEXT wxRichTextCompositeObject: public wxRichTextObject
 762 {
 763     DECLARE_CLASS(wxRichTextCompositeObject)
 764 public:
 765 // Constructors
 766
 767     wxRichTextCompositeObject(wxRichTextObject* parent = NULL);
 768     virtual ~wxRichTextCompositeObject();
 769
 770 // Overrideables
 771
 772     /// Hit-testing: returns a flag indicating hit test details, plus
 773     /// information about position
 774     virtual int HitTest(wxDC& dc, const wxPoint& pt, long& textPosition);
 775
 776     /// Finds the absolute position and row height for the given character position
 777     virtual bool FindPosition(wxDC& dc, long index, wxPoint& pt, int* height, bool forceLineStart);
 778
 779     /// Calculate range
 780     virtual void CalculateRange(long start, long& end);
 781
 782     /// Delete range
 783     virtual bool DeleteRange(const wxRichTextRange& range);
 784
 785     /// Get any text in this object for the given range
 786     virtual wxString GetTextForRange(const wxRichTextRange& range) const;
 787
 788     /// Dump to output stream for debugging
 789     virtual void Dump(wxTextOutputStream& stream);
 790
 791 // Accessors
 792
 793     /// Get the children
 794     wxRichTextObjectList& GetChildren() { return m_children; }
 795     const wxRichTextObjectList& GetChildren() const { return m_children; }
 796
 797     /// Get the child count
 798     size_t GetChildCount() const ;
 799
 800     /// Get the nth child
 801     wxRichTextObject* GetChild(size_t n) const ;
 802
 803     /// Get/set dirty flag
 804     virtual bool GetDirty() const { return m_dirty; }
 805     virtual void SetDirty(bool dirty) { m_dirty = dirty; }
 806
 807     /// Is this composite?
 808     virtual bool IsComposite() const { return true; }
 809
 810     /// Returns true if the buffer is empty
 811     virtual bool IsEmpty() const { return GetChildCount() == 0; }
 812
 813 // Operations
 814
 815     /// Copy
 816     void Copy(const wxRichTextCompositeObject& obj);
 817
 818     /// Assignment
 819     void operator= (const wxRichTextCompositeObject& obj) { Copy(obj); }
 820
 821     /// Append a child, returning the position
 822     size_t AppendChild(wxRichTextObject* child) ;
 823
 824     /// Insert the child in front of the given object, or at the beginning
 825     bool InsertChild(wxRichTextObject* child, wxRichTextObject* inFrontOf) ;
 826
 827     /// Delete the child
 828     bool RemoveChild(wxRichTextObject* child, bool deleteChild = false) ;
 829
 830     /// Delete all children
 831     bool DeleteChildren() ;
 832
 833     /// Recursively merge all pieces that can be merged.
 834     bool Defragment();
 835
 836 protected:
 837     wxRichTextObjectList    m_children;
 838 };
 839
 840 /*!
 841  * wxRichTextBox class declaration
 842  * This defines a 2D space to lay out objects
 843  */
 844
 845 class WXDLLIMPEXP_RICHTEXT wxRichTextBox: public wxRichTextCompositeObject
 846 {
 847     DECLARE_DYNAMIC_CLASS(wxRichTextBox)
 848 public:
 849 // Constructors
 850
 851     wxRichTextBox(wxRichTextObject* parent = NULL);
 852     wxRichTextBox(const wxRichTextBox& obj): wxRichTextCompositeObject() { Copy(obj); }
 853
 854 // Overrideables
 855
 856     /// Draw the item
 857     virtual bool Draw(wxDC& dc, const wxRichTextRange& range, const wxRichTextRange& selectionRange, const wxRect& rect, int descent, int style);
 858
 859     /// Lay the item out
 860     virtual bool Layout(wxDC& dc, const wxRect& rect, int style);
 861
 862     /// Get/set the object size for the given range. Returns false if the range
 863     /// is invalid for this object.
 864     virtual bool GetRangeSize(const wxRichTextRange& range, wxSize& size, int& descent, wxDC& dc, int flags, wxPoint position = wxPoint(0,0)) const;
 865
 866 // Accessors
 867
 868 // Operations
 869
 870     /// Clone
 871     virtual wxRichTextObject* Clone() const { return new wxRichTextBox(*this); }
 872
 873     /// Copy
 874     void Copy(const wxRichTextBox& obj);
 875
 876 protected:
 877 };
 878
 879 /*!
 880  * wxRichTextParagraphBox class declaration
 881  * This box knows how to lay out paragraphs.
 882  */
 883
 884 class WXDLLIMPEXP_RICHTEXT wxRichTextParagraphLayoutBox: public wxRichTextBox
 885 {
 886     DECLARE_DYNAMIC_CLASS(wxRichTextParagraphLayoutBox)
 887 public:
 888 // Constructors
 889
 890     wxRichTextParagraphLayoutBox(wxRichTextObject* parent = NULL);
 891     wxRichTextParagraphLayoutBox(const wxRichTextParagraphLayoutBox& obj): wxRichTextBox() { Init(); Copy(obj); }
 892
 893 // Overrideables
 894
 895     /// Draw the item
 896     virtual bool Draw(wxDC& dc, const wxRichTextRange& range, const wxRichTextRange& selectionRange, const wxRect& rect, int descent, int style);
 897
 898     /// Lay the item out
 899     virtual bool Layout(wxDC& dc, const wxRect& rect, int style);
 900
 901     /// Get/set the object size for the given range. Returns false if the range
 902     /// is invalid for this object.
 903     virtual bool GetRangeSize(const wxRichTextRange& range, wxSize& size, int& descent, wxDC& dc, int flags, wxPoint position = wxPoint(0,0)) const;
 904
 905     /// Delete range
 906     virtual bool DeleteRange(const wxRichTextRange& range);
 907
 908     /// Get any text in this object for the given range
 909     virtual wxString GetTextForRange(const wxRichTextRange& range) const;
 910
 911 // Accessors
 912
 913     /// Associate a control with the buffer, for operations that for example require refreshing the window.
 914     void SetRichTextCtrl(wxRichTextCtrl* ctrl) { m_ctrl = ctrl; }
 915
 916     /// Get the associated control.
 917     wxRichTextCtrl* GetRichTextCtrl() const { return m_ctrl; }
 918
 919     /// Get/set whether the last paragraph is partial or complete
 920     void SetPartialParagraph(bool partialPara) { m_partialParagraph = partialPara; }
 921     bool GetPartialParagraph() const { return m_partialParagraph; }
 922
 923     /// If this is a buffer, returns the current style sheet. The base layout box
 924     /// class doesn't have an associated style sheet.
 925     virtual wxRichTextStyleSheet* GetStyleSheet() const { return NULL; }
 926
 927 // Operations
 928
 929     /// Initialize the object.
 930     void Init();
 931
 932     /// Clear all children
 933     virtual void Clear();
 934
 935     /// Clear and initialize with one blank paragraph
 936     virtual void Reset();
 937
 938     /// Convenience function to add a paragraph of text
 939     virtual wxRichTextRange AddParagraph(const wxString& text, wxTextAttrEx* paraStyle = NULL);
 940
 941     /// Convenience function to add an image
 942     virtual wxRichTextRange AddImage(const wxImage& image, wxTextAttrEx* paraStyle = NULL);
 943
 944     /// Adds multiple paragraphs, based on newlines.
 945     virtual wxRichTextRange AddParagraphs(const wxString& text, wxTextAttrEx* paraStyle = NULL);
 946
 947     /// Get the line at the given position. If caretPosition is true, the position is
 948     /// a caret position, which is normally a smaller number.
 949     virtual wxRichTextLine* GetLineAtPosition(long pos, bool caretPosition = false) const;
 950
 951     /// Get the line at the given y pixel position, or the last line.
 952     virtual wxRichTextLine* GetLineAtYPosition(int y) const;
 953
 954     /// Get the paragraph at the given character or caret position
 955     virtual wxRichTextParagraph* GetParagraphAtPosition(long pos, bool caretPosition = false) const;
 956
 957     /// Get the line size at the given position
 958     virtual wxSize GetLineSizeAtPosition(long pos, bool caretPosition = false) const;
 959
 960     /// Given a position, get the number of the visible line (potentially many to a paragraph),
 961     /// starting from zero at the start of the buffer. We also have to pass a bool (startOfLine)
 962     /// that indicates whether the caret is being shown at the end of the previous line or at the start
 963     /// of the next, since the caret can be shown at 2 visible positions for the same underlying
 964     /// position.
 965     virtual long GetVisibleLineNumber(long pos, bool caretPosition = false, bool startOfLine = false) const;
 966
 967     /// Given a line number, get the corresponding wxRichTextLine object.
 968     virtual wxRichTextLine* GetLineForVisibleLineNumber(long lineNumber) const;
 969
 970     /// Get the leaf object in a paragraph at this position.
 971     /// Given a line number, get the corresponding wxRichTextLine object.
 972     virtual wxRichTextObject* GetLeafObjectAtPosition(long position) const;
 973
 974     /// Get the paragraph by number
 975     virtual wxRichTextParagraph* GetParagraphAtLine(long paragraphNumber) const;
 976
 977     /// Get the paragraph for a given line
 978     virtual wxRichTextParagraph* GetParagraphForLine(wxRichTextLine* line) const;
 979
 980     /// Get the length of the paragraph
 981     virtual int GetParagraphLength(long paragraphNumber) const;
 982
 983     /// Get the number of paragraphs
 984     virtual int GetParagraphCount() const { return GetChildCount(); }
 985
 986     /// Get the number of visible lines
 987     virtual int GetLineCount() const;
 988
 989     /// Get the text of the paragraph
 990     virtual wxString GetParagraphText(long paragraphNumber) const;
 991
 992     /// Convert zero-based line column and paragraph number to a position.
 993     virtual long XYToPosition(long x, long y) const;
 994
 995     /// Convert zero-based position to line column and paragraph number
 996     virtual bool PositionToXY(long pos, long* x, long* y) const;
 997
 998     /// Set text attributes: character and/or paragraph styles.
 999     virtual bool SetStyle(const wxRichTextRange& range, const wxRichTextAttr& style, int flags = wxRICHTEXT_SETSTYLE_WITH_UNDO);
1000     virtual bool SetStyle(const wxRichTextRange& range, const wxTextAttrEx& style, int flags = wxRICHTEXT_SETSTYLE_WITH_UNDO);
1001
1002     /// Get the conbined text attributes for this position.
1003     virtual bool GetStyle(long position, wxTextAttrEx& style);
1004     virtual bool GetStyle(long position, wxRichTextAttr& style);
1005
1006     /// Get the content (uncombined) attributes for this position.
1007     virtual bool GetUncombinedStyle(long position, wxTextAttrEx& style);
1008     virtual bool GetUncombinedStyle(long position, wxRichTextAttr& style);
1009
1010     /// Implementation helper for GetStyle. If combineStyles is true, combine base, paragraph and
1011     /// context attributes.
1012     virtual bool DoGetStyle(long position, wxTextAttrEx& style, bool combineStyles = true);
1013
1014     /// Get the combined style for a range - if any attribute is different within the range,
1015     /// that attribute is not present within the flags
1016     virtual bool GetStyleForRange(const wxRichTextRange& range, wxTextAttrEx& style);
1017
1018     /// Combines 'style' with 'currentStyle' for the purpose of summarising the attributes of a range of
1019     /// content.
1020     bool CollectStyle(wxTextAttrEx& currentStyle, const wxTextAttrEx& style, long& multipleStyleAttributes);
1021
1022     /// Set list style
1023     virtual bool SetListStyle(const wxRichTextRange& range, wxRichTextListStyleDefinition* def, int flags = wxRICHTEXT_SETSTYLE_WITH_UNDO, int startFrom = 1, int specifiedLevel = -1);
1024     virtual bool SetListStyle(const wxRichTextRange& range, const wxString& defName, int flags = wxRICHTEXT_SETSTYLE_WITH_UNDO, int startFrom = 1, int specifiedLevel = -1);
1025
1026     /// Clear list for given range
1027     virtual bool ClearListStyle(const wxRichTextRange& range, int flags = wxRICHTEXT_SETSTYLE_WITH_UNDO);
1028
1029     /// Number/renumber any list elements in the given range.
1030     /// def/defName can be NULL/empty to indicate that the existing list style should be used.
1031     virtual bool NumberList(const wxRichTextRange& range, wxRichTextListStyleDefinition* def = NULL, int flags = wxRICHTEXT_SETSTYLE_WITH_UNDO, int startFrom = 1, int specifiedLevel = -1);
1032     virtual bool NumberList(const wxRichTextRange& range, const wxString& defName, int flags = wxRICHTEXT_SETSTYLE_WITH_UNDO, int startFrom = 1, int specifiedLevel = -1);
1033
1034     /// Promote the list items within the given range. promoteBy can be a positive or negative number, e.g. 1 or -1
1035     /// def/defName can be NULL/empty to indicate that the existing list style should be used.
1036     virtual bool PromoteList(int promoteBy, const wxRichTextRange& range, wxRichTextListStyleDefinition* def = NULL, int flags = wxRICHTEXT_SETSTYLE_WITH_UNDO, int specifiedLevel = -1);
1037     virtual bool PromoteList(int promoteBy, const wxRichTextRange& range, const wxString& defName, int flags = wxRICHTEXT_SETSTYLE_WITH_UNDO, int specifiedLevel = -1);
1038
1039     /// Helper for NumberList and PromoteList, that does renumbering and promotion simultaneously
1040     /// def/defName can be NULL/empty to indicate that the existing list style should be used.
1041     virtual bool DoNumberList(const wxRichTextRange& range, const wxRichTextRange& promotionRange, int promoteBy, wxRichTextListStyleDefinition* def, int flags = wxRICHTEXT_SETSTYLE_WITH_UNDO, int startFrom = 1, int specifiedLevel = -1);
1042
1043     /// Fills in the attributes for numbering a paragraph after previousParagraph.
1044     virtual bool FindNextParagraphNumber(wxRichTextParagraph* previousParagraph, wxRichTextAttr& attr) const;
1045
1046     /// Test if this whole range has character attributes of the specified kind. If any
1047     /// of the attributes are different within the range, the test fails. You
1048     /// can use this to implement, for example, bold button updating. style must have
1049     /// flags indicating which attributes are of interest.
1050     virtual bool HasCharacterAttributes(const wxRichTextRange& range, const wxTextAttrEx& style) const;
1051     virtual bool HasCharacterAttributes(const wxRichTextRange& range, const wxRichTextAttr& style) const;
1052
1053     /// Test if this whole range has paragraph attributes of the specified kind. If any
1054     /// of the attributes are different within the range, the test fails. You
1055     /// can use this to implement, for example, centering button updating. style must have
1056     /// flags indicating which attributes are of interest.
1057     virtual bool HasParagraphAttributes(const wxRichTextRange& range, const wxTextAttrEx& style) const;
1058     virtual bool HasParagraphAttributes(const wxRichTextRange& range, const wxRichTextAttr& style) const;
1059
1060     /// Clone
1061     virtual wxRichTextObject* Clone() const { return new wxRichTextParagraphLayoutBox(*this); }
1062
1063     /// Insert fragment into this box at the given position. If partialParagraph is true,
1064     /// it is assumed that the last (or only) paragraph is just a piece of data with no paragraph
1065     /// marker.
1066     virtual bool InsertFragment(long position, wxRichTextParagraphLayoutBox& fragment);
1067
1068     /// Make a copy of the fragment corresponding to the given range, putting it in 'fragment'.
1069     virtual bool CopyFragment(const wxRichTextRange& range, wxRichTextParagraphLayoutBox& fragment);
1070
1071     /// Apply the style sheet to the buffer, for example if the styles have changed.
1072     virtual bool ApplyStyleSheet(wxRichTextStyleSheet* styleSheet);
1073
1074     /// Copy
1075     void Copy(const wxRichTextParagraphLayoutBox& obj);
1076
1077     /// Assignment
1078     void operator= (const wxRichTextParagraphLayoutBox& obj) { Copy(obj); }
1079
1080     /// Calculate ranges
1081     virtual void UpdateRanges() { long end; CalculateRange(0, end); }
1082
1083     /// Get all the text
1084     virtual wxString GetText() const;
1085
1086     /// Set default style for new content. Setting it to a default attribute
1087     /// makes new content take on the 'basic' style.
1088     virtual bool SetDefaultStyle(const wxTextAttrEx& style);
1089
1090     /// Get default style
1091     virtual const wxTextAttrEx& GetDefaultStyle() const { return m_defaultAttributes; }
1092
1093     /// Set basic (overall) style
1094     virtual void SetBasicStyle(const wxTextAttrEx& style) { m_attributes = style; }
1095     virtual void SetBasicStyle(const wxRichTextAttr& style) { style.CopyTo(m_attributes); }
1096
1097     /// Get basic (overall) style
1098     virtual const wxTextAttrEx& GetBasicStyle() const { return m_attributes; }
1099
1100     /// Invalidate the buffer. With no argument, invalidates whole buffer.
1101     void Invalidate(const wxRichTextRange& invalidRange = wxRICHTEXT_ALL);
1102
1103     /// Get invalid range, rounding to entire paragraphs if argument is true.
1104     wxRichTextRange GetInvalidRange(bool wholeParagraphs = false) const;
1105
1106 protected:
1107     wxRichTextCtrl* m_ctrl;
1108     wxTextAttrEx    m_defaultAttributes;
1109
1110     /// The invalidated range that will need full layout
1111     wxRichTextRange m_invalidRange;
1112
1113     // Is the last paragraph partial or complete?
1114     bool            m_partialParagraph;
1115 };
1116
1117 /*!
1118  * wxRichTextLine class declaration
1119  * This object represents a line in a paragraph, and stores
1120  * offsets from the start of the paragraph representing the
1121  * start and end positions of the line.
1122  */
1123
1124 class WXDLLIMPEXP_RICHTEXT wxRichTextLine
1125 {
1126 public:
1127 // Constructors
1128
1129     wxRichTextLine(wxRichTextParagraph* parent);
1130     wxRichTextLine(const wxRichTextLine& obj) { Init( NULL); Copy(obj); }
1131     virtual ~wxRichTextLine() {}
1132
1133 // Overrideables
1134
1135 // Accessors
1136
1137     /// Set the range
1138     void SetRange(const wxRichTextRange& range) { m_range = range; }
1139     void SetRange(long from, long to) { m_range = wxRichTextRange(from, to); }
1140
1141     /// Get the parent paragraph
1142     wxRichTextParagraph* GetParent() { return m_parent; }
1143
1144     /// Get the range
1145     const wxRichTextRange& GetRange() const { return m_range; }
1146     wxRichTextRange& GetRange() { return m_range; }
1147
1148     /// Get the absolute range
1149     wxRichTextRange GetAbsoluteRange() const;
1150
1151     /// Get/set the line size as calculated by Layout.
1152     virtual wxSize GetSize() const { return m_size; }
1153     virtual void SetSize(const wxSize& sz) { m_size = sz; }
1154
1155     /// Get/set the object position relative to the parent
1156     virtual wxPoint GetPosition() const { return m_pos; }
1157     virtual void SetPosition(const wxPoint& pos) { m_pos = pos; }
1158
1159     /// Get the absolute object position
1160     virtual wxPoint GetAbsolutePosition() const;
1161
1162     /// Get the rectangle enclosing the line
1163     virtual wxRect GetRect() const { return wxRect(GetAbsolutePosition(), GetSize()); }
1164
1165     /// Set/get stored descent
1166     void SetDescent(int descent) { m_descent = descent; }
1167     int GetDescent() const { return m_descent; }
1168
1169 // Operations
1170
1171     /// Initialisation
1172     void Init(wxRichTextParagraph* parent);
1173
1174     /// Copy
1175     void Copy(const wxRichTextLine& obj);
1176
1177     /// Clone
1178     virtual wxRichTextLine* Clone() const { return new wxRichTextLine(*this); }
1179
1180 protected:
1181
1182     /// The range of the line (start position to end position)
1183     /// This is relative to the parent paragraph.
1184     wxRichTextRange     m_range;
1185
1186     /// Size and position measured relative to top of paragraph
1187     wxPoint             m_pos;
1188     wxSize              m_size;
1189
1190     /// Maximum descent for this line (location of text baseline)
1191     int                 m_descent;
1192
1193     // The parent object
1194     wxRichTextParagraph* m_parent;
1195 };
1196
1197 WX_DECLARE_LIST_WITH_DECL( wxRichTextLine, wxRichTextLineList , class WXDLLIMPEXP_RICHTEXT );
1198
1199 /*!
1200  * wxRichTextParagraph class declaration
1201  * This object represents a single paragraph (or in a straight text editor, a line).
1202  */
1203
1204 class WXDLLIMPEXP_RICHTEXT wxRichTextParagraph: public wxRichTextBox
1205 {
1206     DECLARE_DYNAMIC_CLASS(wxRichTextParagraph)
1207 public:
1208 // Constructors
1209
1210     wxRichTextParagraph(wxRichTextObject* parent = NULL, wxTextAttrEx* style = NULL);
1211     wxRichTextParagraph(const wxString& text, wxRichTextObject* parent = NULL, wxTextAttrEx* style = NULL);
1212     virtual ~wxRichTextParagraph();
1213     wxRichTextParagraph(const wxRichTextParagraph& obj): wxRichTextBox() { Copy(obj); }
1214
1215 // Overrideables
1216
1217     /// Draw the item
1218     virtual bool Draw(wxDC& dc, const wxRichTextRange& range, const wxRichTextRange& selectionRange, const wxRect& rect, int descent, int style);
1219
1220     /// Lay the item out
1221     virtual bool Layout(wxDC& dc, const wxRect& rect, int style);
1222
1223     /// Get/set the object size for the given range. Returns false if the range
1224     /// is invalid for this object.
1225     virtual bool GetRangeSize(const wxRichTextRange& range, wxSize& size, int& descent, wxDC& dc, int flags, wxPoint position = wxPoint(0,0)) const;
1226
1227     /// Finds the absolute position and row height for the given character position
1228     virtual bool FindPosition(wxDC& dc, long index, wxPoint& pt, int* height, bool forceLineStart);
1229
1230     /// Hit-testing: returns a flag indicating hit test details, plus
1231     /// information about position
1232     virtual int HitTest(wxDC& dc, const wxPoint& pt, long& textPosition);
1233
1234     /// Calculate range
1235     virtual void CalculateRange(long start, long& end);
1236
1237 // Accessors
1238
1239     /// Get the cached lines
1240     wxRichTextLineList& GetLines() { return m_cachedLines; }
1241
1242 // Operations
1243
1244     /// Copy
1245     void Copy(const wxRichTextParagraph& obj);
1246
1247     /// Clone
1248     virtual wxRichTextObject* Clone() const { return new wxRichTextParagraph(*this); }
1249
1250     /// Clear the cached lines
1251     void ClearLines();
1252
1253 // Implementation
1254
1255     /// Apply paragraph styles such as centering to the wrapped lines
1256     virtual void ApplyParagraphStyle(const wxTextAttrEx& attr, const wxRect& rect);
1257
1258     /// Insert text at the given position
1259     virtual bool InsertText(long pos, const wxString& text);
1260
1261     /// Split an object at this position if necessary, and return
1262     /// the previous object, or NULL if inserting at beginning.
1263     virtual wxRichTextObject* SplitAt(long pos, wxRichTextObject** previousObject = NULL);
1264
1265     /// Move content to a list from this point
1266     virtual void MoveToList(wxRichTextObject* obj, wxList& list);
1267
1268     /// Add content back from list
1269     virtual void MoveFromList(wxList& list);
1270
1271     /// Get the plain text searching from the start or end of the range.
1272     /// The resulting string may be shorter than the range given.
1273     bool GetContiguousPlainText(wxString& text, const wxRichTextRange& range, bool fromStart = true);
1274
1275     /// Find a suitable wrap position. wrapPosition is the last position in the line to the left
1276     /// of the split.
1277     bool FindWrapPosition(const wxRichTextRange& range, wxDC& dc, int availableSpace, long& wrapPosition);
1278
1279     /// Find the object at the given position
1280     wxRichTextObject* FindObjectAtPosition(long position);
1281
1282     /// Get the bullet text for this paragraph.
1283     wxString GetBulletText();
1284
1285     /// Allocate or reuse a line object
1286     wxRichTextLine* AllocateLine(int pos);
1287
1288     /// Clear remaining unused line objects, if any
1289     bool ClearUnusedLines(int lineCount);
1290
1291     /// Get combined attributes of the base style, paragraph style and character style. We use this to dynamically
1292     /// retrieve the actual style.
1293     wxTextAttrEx GetCombinedAttributes(const wxTextAttrEx& contentStyle) const;
1294
1295     /// Get combined attributes of the base style and paragraph style.
1296     wxTextAttrEx GetCombinedAttributes() const;
1297
1298     /// Create default tabstop array
1299     static void InitDefaultTabs();
1300
1301     /// Clear default tabstop array
1302     static void ClearDefaultTabs();
1303
1304     /// Get default tabstop array
1305     static const wxArrayInt& GetDefaultTabs() { return sm_defaultTabs; }
1306
1307 protected:
1308     /// The lines that make up the wrapped paragraph
1309     wxRichTextLineList m_cachedLines;
1310
1311     /// Default tabstops
1312     static wxArrayInt  sm_defaultTabs;
1313 };
1314
1315 /*!
1316  * wxRichTextPlainText class declaration
1317  * This object represents a single piece of text.
1318  */
1319
1320 class WXDLLIMPEXP_RICHTEXT wxRichTextPlainText: public wxRichTextObject
1321 {
1322     DECLARE_DYNAMIC_CLASS(wxRichTextPlainText)
1323 public:
1324 // Constructors
1325
1326     wxRichTextPlainText(const wxString& text = wxEmptyString, wxRichTextObject* parent = NULL, wxTextAttrEx* style = NULL);
1327     wxRichTextPlainText(const wxRichTextPlainText& obj): wxRichTextObject() { Copy(obj); }
1328
1329 // Overrideables
1330
1331     /// Draw the item
1332     virtual bool Draw(wxDC& dc, const wxRichTextRange& range, const wxRichTextRange& selectionRange, const wxRect& rect, int descent, int style);
1333
1334     /// Lay the item out
1335     virtual bool Layout(wxDC& dc, const wxRect& rect, int style);
1336
1337     /// Get/set the object size for the given range. Returns false if the range
1338     /// is invalid for this object.
1339     virtual bool GetRangeSize(const wxRichTextRange& range, wxSize& size, int& descent, wxDC& dc, int flags, wxPoint position/* = wxPoint(0,0)*/) const;
1340
1341     /// Get any text in this object for the given range
1342     virtual wxString GetTextForRange(const wxRichTextRange& range) const;
1343
1344     /// Do a split, returning an object containing the second part, and setting
1345     /// the first part in 'this'.
1346     virtual wxRichTextObject* DoSplit(long pos);
1347
1348     /// Calculate range
1349     virtual void CalculateRange(long start, long& end);
1350
1351     /// Delete range
1352     virtual bool DeleteRange(const wxRichTextRange& range);
1353
1354     /// Returns true if the object is empty
1355     virtual bool IsEmpty() const { return m_text.empty(); }
1356
1357     /// Returns true if this object can merge itself with the given one.
1358     virtual bool CanMerge(wxRichTextObject* object) const;
1359
1360     /// Returns true if this object merged itself with the given one.
1361     /// The calling code will then delete the given object.
1362     virtual bool Merge(wxRichTextObject* object);
1363
1364     /// Dump to output stream for debugging
1365     virtual void Dump(wxTextOutputStream& stream);
1366
1367 // Accessors
1368
1369     /// Get the text
1370     const wxString& GetText() const { return m_text; }
1371
1372     /// Set the text
1373     void SetText(const wxString& text) { m_text = text; }
1374
1375 // Operations
1376
1377     /// Copy
1378     void Copy(const wxRichTextPlainText& obj);
1379
1380     /// Clone
1381     virtual wxRichTextObject* Clone() const { return new wxRichTextPlainText(*this); }
1382 private:
1383     bool DrawTabbedString(wxDC& dc, const wxTextAttrEx& attr, const wxRect& rect, wxString& str, wxCoord& x, wxCoord& y, bool selected);
1384
1385 protected:
1386     wxString    m_text;
1387 };
1388
1389 /*!
1390  * wxRichTextImageBlock stores information about an image, in binary in-memory form
1391  */
1392
1393 class WXDLLIMPEXP_BASE wxDataInputStream;
1394 class WXDLLIMPEXP_BASE wxDataOutputStream;
1395
1396 class WXDLLIMPEXP_RICHTEXT wxRichTextImageBlock: public wxObject
1397 {
1398 public:
1399     wxRichTextImageBlock();
1400     wxRichTextImageBlock(const wxRichTextImageBlock& block);
1401     virtual ~wxRichTextImageBlock();
1402
1403     void Init();
1404     void Clear();
1405
1406     // Load the original image into a memory block.
1407     // If the image is not a JPEG, we must convert it into a JPEG
1408     // to conserve space.
1409     // If it's not a JPEG we can make use of 'image', already scaled, so we don't have to
1410     // load the image a 2nd time.
1411     virtual bool MakeImageBlock(const wxString& filename, int imageType, wxImage& image, bool convertToJPEG = true);
1412
1413     // Make an image block from the wxImage in the given
1414     // format.
1415     virtual bool MakeImageBlock(wxImage& image, int imageType, int quality = 80);
1416
1417     // Write to a file
1418     bool Write(const wxString& filename);
1419
1420     // Write data in hex to a stream
1421     bool WriteHex(wxOutputStream& stream);
1422
1423     // Read data in hex from a stream
1424     bool ReadHex(wxInputStream& stream, int length, int imageType);
1425
1426     // Copy from 'block'
1427     void Copy(const wxRichTextImageBlock& block);
1428
1429     // Load a wxImage from the block
1430     bool Load(wxImage& image);
1431
1432 //// Operators
1433     void operator=(const wxRichTextImageBlock& block);
1434
1435 //// Accessors
1436
1437     unsigned char* GetData() const { return m_data; }
1438     size_t GetDataSize() const { return m_dataSize; }
1439     int GetImageType() const { return m_imageType; }
1440
1441     void SetData(unsigned char* image) { m_data = image; }
1442     void SetDataSize(size_t size) { m_dataSize = size; }
1443     void SetImageType(int imageType) { m_imageType = imageType; }
1444
1445     bool Ok() const { return IsOk(); }
1446     bool IsOk() const { return GetData() != NULL; }
1447
1448     // Gets the extension for the block's type
1449     wxString GetExtension() const;
1450
1451 /// Implementation
1452
1453     // Allocate and read from stream as a block of memory
1454     static unsigned char* ReadBlock(wxInputStream& stream, size_t size);
1455     static unsigned char* ReadBlock(const wxString& filename, size_t size);
1456
1457     // Write memory block to stream
1458     static bool WriteBlock(wxOutputStream& stream, unsigned char* block, size_t size);
1459
1460     // Write memory block to file
1461     static bool WriteBlock(const wxString& filename, unsigned char* block, size_t size);
1462
1463 protected:
1464     // Size in bytes of the image stored.
1465     // This is in the raw, original form such as a JPEG file.
1466     unsigned char*      m_data;
1467     size_t              m_dataSize;
1468     int                 m_imageType; // wxWin type id
1469 };
1470
1471
1472 /*!
1473  * wxRichTextImage class declaration
1474  * This object represents an image.
1475  */
1476
1477 class WXDLLIMPEXP_RICHTEXT wxRichTextImage: public wxRichTextObject
1478 {
1479     DECLARE_DYNAMIC_CLASS(wxRichTextImage)
1480 public:
1481 // Constructors
1482
1483     wxRichTextImage(wxRichTextObject* parent = NULL): wxRichTextObject(parent) { }
1484     wxRichTextImage(const wxImage& image, wxRichTextObject* parent = NULL);
1485     wxRichTextImage(const wxRichTextImageBlock& imageBlock, wxRichTextObject* parent = NULL);
1486     wxRichTextImage(const wxRichTextImage& obj): wxRichTextObject() { Copy(obj); }
1487
1488 // Overrideables
1489
1490     /// Draw the item
1491     virtual bool Draw(wxDC& dc, const wxRichTextRange& range, const wxRichTextRange& selectionRange, const wxRect& rect, int descent, int style);
1492
1493     /// Lay the item out
1494     virtual bool Layout(wxDC& dc, const wxRect& rect, int style);
1495
1496     /// Get the object size for the given range. Returns false if the range
1497     /// is invalid for this object.
1498     virtual bool GetRangeSize(const wxRichTextRange& range, wxSize& size, int& descent, wxDC& dc, int flags, wxPoint position = wxPoint(0,0)) const;
1499
1500     /// Returns true if the object is empty
1501     virtual bool IsEmpty() const { return !m_image.Ok(); }
1502
1503 // Accessors
1504
1505     /// Get the image
1506     const wxImage& GetImage() const { return m_image; }
1507
1508     /// Set the image
1509     void SetImage(const wxImage& image) { m_image = image; }
1510
1511     /// Get the image block containing the raw data
1512     wxRichTextImageBlock& GetImageBlock() { return m_imageBlock; }
1513
1514 // Operations
1515
1516     /// Copy
1517     void Copy(const wxRichTextImage& obj);
1518
1519     /// Clone
1520     virtual wxRichTextObject* Clone() const { return new wxRichTextImage(*this); }
1521
1522     /// Load wxImage from the block
1523     virtual bool LoadFromBlock();
1524
1525     /// Make block from the wxImage
1526     virtual bool MakeBlock();
1527
1528 protected:
1529     // TODO: reduce the multiple representations of data
1530     wxImage                 m_image;
1531     wxBitmap                m_bitmap;
1532     wxRichTextImageBlock    m_imageBlock;
1533 };
1534
1535
1536 /*!
1537  * wxRichTextBuffer class declaration
1538  * This is a kind of box, used to represent the whole buffer
1539  */
1540
1541 class WXDLLIMPEXP_RICHTEXT wxRichTextCommand;
1542 class WXDLLIMPEXP_RICHTEXT wxRichTextAction;
1543
1544 class WXDLLIMPEXP_RICHTEXT wxRichTextBuffer: public wxRichTextParagraphLayoutBox
1545 {
1546     DECLARE_DYNAMIC_CLASS(wxRichTextBuffer)
1547 public:
1548 // Constructors
1549
1550     wxRichTextBuffer() { Init(); }
1551     wxRichTextBuffer(const wxRichTextBuffer& obj): wxRichTextParagraphLayoutBox() { Init(); Copy(obj); }
1552     virtual ~wxRichTextBuffer() ;
1553
1554 // Accessors
1555
1556     /// Gets the command processor
1557     wxCommandProcessor* GetCommandProcessor() const { return m_commandProcessor; }
1558
1559     /// Set style sheet, if any.
1560     void SetStyleSheet(wxRichTextStyleSheet* styleSheet) { m_styleSheet = styleSheet; }
1561     virtual wxRichTextStyleSheet* GetStyleSheet() const { return m_styleSheet; }
1562
1563     /// Set style sheet and notify of the change
1564     bool SetStyleSheetAndNotify(wxRichTextStyleSheet* sheet);
1565
1566     /// Push style sheet to top of stack
1567     bool PushStyleSheet(wxRichTextStyleSheet* styleSheet);
1568
1569     /// Pop style sheet from top of stack
1570     wxRichTextStyleSheet* PopStyleSheet();
1571
1572 // Operations
1573
1574     /// Initialisation
1575     void Init();
1576
1577     /// Clears the buffer and resets the command processor
1578     virtual void Clear();
1579
1580     /// The same as Clear, and adds an empty paragraph.
1581     virtual void Reset();
1582
1583     /// Load a file
1584     virtual bool LoadFile(const wxString& filename, int type = wxRICHTEXT_TYPE_ANY);
1585
1586     /// Save a file
1587     virtual bool SaveFile(const wxString& filename, int type = wxRICHTEXT_TYPE_ANY);
1588
1589     /// Load from a stream
1590     virtual bool LoadFile(wxInputStream& stream, int type = wxRICHTEXT_TYPE_ANY);
1591
1592     /// Save to a stream
1593     virtual bool SaveFile(wxOutputStream& stream, int type = wxRICHTEXT_TYPE_ANY);
1594
1595     /// Set the handler flags, controlling loading and saving
1596     void SetHandlerFlags(int flags) { m_handlerFlags = flags; }
1597
1598     /// Get the handler flags, controlling loading and saving
1599     int GetHandlerFlags() const { return m_handlerFlags; }
1600
1601     /// Convenience function to add a paragraph of text
1602     virtual wxRichTextRange AddParagraph(const wxString& text, wxTextAttrEx* paraStyle = NULL) { Modify(); return wxRichTextParagraphLayoutBox::AddParagraph(text, paraStyle); }
1603
1604     /// Begin collapsing undo/redo commands. Note that this may not work properly
1605     /// if combining commands that delete or insert content, changing ranges for
1606     /// subsequent actions.
1607     virtual bool BeginBatchUndo(const wxString& cmdName);
1608
1609     /// End collapsing undo/redo commands
1610     virtual bool EndBatchUndo();
1611
1612     /// Collapsing commands?
1613     virtual bool BatchingUndo() const { return m_batchedCommandDepth > 0; }
1614
1615     /// Submit immediately, or delay according to whether collapsing is on
1616     virtual bool SubmitAction(wxRichTextAction* action);
1617
1618     /// Get collapsed command
1619     virtual wxRichTextCommand* GetBatchedCommand() const { return m_batchedCommand; }
1620
1621     /// Begin suppressing undo/redo commands. The way undo is suppressed may be implemented
1622     /// differently by each command. If not dealt with by a command implementation, then
1623     /// it will be implemented automatically by not storing the command in the undo history
1624     /// when the action is submitted to the command processor.
1625     virtual bool BeginSuppressUndo();
1626
1627     /// End suppressing undo/redo commands.
1628     virtual bool EndSuppressUndo();
1629
1630     /// Collapsing commands?
1631     virtual bool SuppressingUndo() const { return m_suppressUndo > 0; }
1632
1633     /// Copy the range to the clipboard
1634     virtual bool CopyToClipboard(const wxRichTextRange& range);
1635
1636     /// Paste the clipboard content to the buffer
1637     virtual bool PasteFromClipboard(long position);
1638
1639     /// Can we paste from the clipboard?
1640     virtual bool CanPasteFromClipboard() const;
1641
1642     /// Begin using a style
1643     virtual bool BeginStyle(const wxTextAttrEx& style);
1644
1645     /// End the style
1646     virtual bool EndStyle();
1647
1648     /// End all styles
1649     virtual bool EndAllStyles();
1650
1651     /// Clear the style stack
1652     virtual void ClearStyleStack();
1653
1654     /// Get the size of the style stack, for example to check correct nesting
1655     virtual size_t GetStyleStackSize() const { return m_attributeStack.GetCount(); }
1656
1657     /// Begin using bold
1658     bool BeginBold();
1659
1660     /// End using bold
1661     bool EndBold() { return EndStyle(); }
1662
1663     /// Begin using italic
1664     bool BeginItalic();
1665
1666     /// End using italic
1667     bool EndItalic() { return EndStyle(); }
1668
1669     /// Begin using underline
1670     bool BeginUnderline();
1671
1672     /// End using underline
1673     bool EndUnderline() { return EndStyle(); }
1674
1675     /// Begin using point size
1676     bool BeginFontSize(int pointSize);
1677
1678     /// End using point size
1679     bool EndFontSize() { return EndStyle(); }
1680
1681     /// Begin using this font
1682     bool BeginFont(const wxFont& font);
1683
1684     /// End using a font
1685     bool EndFont() { return EndStyle(); }
1686
1687     /// Begin using this colour
1688     bool BeginTextColour(const wxColour& colour);
1689
1690     /// End using a colour
1691     bool EndTextColour() { return EndStyle(); }
1692
1693     /// Begin using alignment
1694     bool BeginAlignment(wxTextAttrAlignment alignment);
1695
1696     /// End alignment
1697     bool EndAlignment() { return EndStyle(); }
1698
1699     /// Begin left indent
1700     bool BeginLeftIndent(int leftIndent, int leftSubIndent = 0);
1701
1702     /// End left indent
1703     bool EndLeftIndent() { return EndStyle(); }
1704
1705     /// Begin right indent
1706     bool BeginRightIndent(int rightIndent);
1707
1708     /// End right indent
1709     bool EndRightIndent() { return EndStyle(); }
1710
1711     /// Begin paragraph spacing
1712     bool BeginParagraphSpacing(int before, int after);
1713
1714     /// End paragraph spacing
1715     bool EndParagraphSpacing() { return EndStyle(); }
1716
1717     /// Begin line spacing
1718     bool BeginLineSpacing(int lineSpacing);
1719
1720     /// End line spacing
1721     bool EndLineSpacing() { return EndStyle(); }
1722
1723     /// Begin numbered bullet
1724     bool BeginNumberedBullet(int bulletNumber, int leftIndent, int leftSubIndent, int bulletStyle = wxTEXT_ATTR_BULLET_STYLE_ARABIC|wxTEXT_ATTR_BULLET_STYLE_PERIOD);
1725
1726     /// End numbered bullet
1727     bool EndNumberedBullet() { return EndStyle(); }
1728
1729     /// Begin symbol bullet
1730     bool BeginSymbolBullet(const wxString& symbol, int leftIndent, int leftSubIndent, int bulletStyle = wxTEXT_ATTR_BULLET_STYLE_SYMBOL);
1731
1732     /// End symbol bullet
1733     bool EndSymbolBullet() { return EndStyle(); }
1734
1735     /// Begin standard bullet
1736     bool BeginStandardBullet(const wxString& bulletName, int leftIndent, int leftSubIndent, int bulletStyle = wxTEXT_ATTR_BULLET_STYLE_STANDARD);
1737
1738     /// End standard bullet
1739     bool EndStandardBullet() { return EndStyle(); }
1740
1741     /// Begin named character style
1742     bool BeginCharacterStyle(const wxString& characterStyle);
1743
1744     /// End named character style
1745     bool EndCharacterStyle() { return EndStyle(); }
1746
1747     /// Begin named paragraph style
1748     bool BeginParagraphStyle(const wxString& paragraphStyle);
1749
1750     /// End named character style
1751     bool EndParagraphStyle() { return EndStyle(); }
1752
1753     /// Begin named list style
1754     bool BeginListStyle(const wxString& listStyle, int level = 1, int number = 1);
1755
1756     /// End named character style
1757     bool EndListStyle() { return EndStyle(); }
1758
1759     /// Begin URL
1760     bool BeginURL(const wxString& url, const wxString& characterStyle = wxEmptyString);
1761
1762     /// End URL
1763     bool EndURL() { return EndStyle(); }
1764
1765 // Event handling
1766
1767     /// Add an event handler
1768     bool AddEventHandler(wxEvtHandler* handler);
1769
1770     /// Remove an event handler
1771     bool RemoveEventHandler(wxEvtHandler* handler, bool deleteHandler = false);
1772
1773     /// Clear event handlers
1774     void ClearEventHandlers();
1775
1776     /// Send event to event handlers. If sendToAll is true, will send to all event handlers,
1777     /// otherwise will stop at the first successful one.
1778     bool SendEvent(wxEvent& event, bool sendToAll = true);
1779
1780 // Implementation
1781
1782     /// Copy
1783     void Copy(const wxRichTextBuffer& obj);
1784
1785     /// Clone
1786     virtual wxRichTextObject* Clone() const { return new wxRichTextBuffer(*this); }
1787
1788     /// Submit command to insert paragraphs
1789     bool InsertParagraphsWithUndo(long pos, const wxRichTextParagraphLayoutBox& paragraphs, wxRichTextCtrl* ctrl, int flags = 0);
1790
1791     /// Submit command to insert the given text
1792     bool InsertTextWithUndo(long pos, const wxString& text, wxRichTextCtrl* ctrl, int flags = 0);
1793
1794     /// Submit command to insert a newline
1795     bool InsertNewlineWithUndo(long pos, wxRichTextCtrl* ctrl, int flags = 0);
1796
1797     /// Submit command to insert the given image
1798     bool InsertImageWithUndo(long pos, const wxRichTextImageBlock& imageBlock, wxRichTextCtrl* ctrl, int flags = 0);
1799
1800     /// Submit command to delete this range
1801     bool DeleteRangeWithUndo(const wxRichTextRange& range, long initialCaretPosition, long newCaretPositon, wxRichTextCtrl* ctrl);
1802
1803     /// Mark modified
1804     void Modify(bool modify = true) { m_modified = modify; }
1805     bool IsModified() const { return m_modified; }
1806
1807     /// Get the style that is appropriate for a new paragraph at this position.
1808     /// If the previous paragraph has a paragraph style name, look up the next-paragraph
1809     /// style.
1810     wxRichTextAttr GetStyleForNewParagraph(long pos, bool caretPosition = false) const;
1811
1812     /// Dumps contents of buffer for debugging purposes
1813     virtual void Dump();
1814     virtual void Dump(wxTextOutputStream& stream) { wxRichTextParagraphLayoutBox::Dump(stream); }
1815
1816     /// Returns the file handlers
1817     static wxList& GetHandlers() { return sm_handlers; }
1818
1819     /// Adds a handler to the end
1820     static void AddHandler(wxRichTextFileHandler *handler);
1821
1822     /// Inserts a handler at the front
1823     static void InsertHandler(wxRichTextFileHandler *handler);
1824
1825     /// Removes a handler
1826     static bool RemoveHandler(const wxString& name);
1827
1828     /// Finds a handler by name
1829     static wxRichTextFileHandler *FindHandler(const wxString& name);
1830
1831     /// Finds a handler by extension and type
1832     static wxRichTextFileHandler *FindHandler(const wxString& extension, int imageType);
1833
1834     /// Finds a handler by filename or, if supplied, type
1835     static wxRichTextFileHandler *FindHandlerFilenameOrType(const wxString& filename, int imageType);
1836
1837     /// Finds a handler by type
1838     static wxRichTextFileHandler *FindHandler(int imageType);
1839
1840     /// Gets a wildcard incorporating all visible handlers. If 'types' is present,
1841     /// will be filled with the file type corresponding to each filter. This can be
1842     /// used to determine the type to pass to LoadFile given a selected filter.
1843     static wxString GetExtWildcard(bool combine = false, bool save = false, wxArrayInt* types = NULL);
1844
1845     /// Clean up handlers
1846     static void CleanUpHandlers();
1847
1848     /// Initialise the standard handlers
1849     static void InitStandardHandlers();
1850
1851     /// Get renderer
1852     static wxRichTextRenderer* GetRenderer() { return sm_renderer; }
1853
1854     /// Set renderer, deleting old one
1855     static void SetRenderer(wxRichTextRenderer* renderer);
1856
1857     /// Minimum margin between bullet and paragraph in 10ths of a mm
1858     static int GetBulletRightMargin() { return sm_bulletRightMargin; }
1859     static void SetBulletRightMargin(int margin) { sm_bulletRightMargin = margin; }
1860
1861     /// Factor to multiply by character height to get a reasonable bullet size
1862     static float GetBulletProportion() { return sm_bulletProportion; }
1863     static void SetBulletProportion(float prop) { sm_bulletProportion = prop; }
1864 protected:
1865
1866     /// Command processor
1867     wxCommandProcessor*     m_commandProcessor;
1868
1869     /// Has been modified?
1870     bool                    m_modified;
1871
1872     /// Collapsed command stack
1873     int                     m_batchedCommandDepth;
1874
1875     /// Name for collapsed command
1876     wxString                m_batchedCommandsName;
1877
1878     /// Current collapsed command accumulating actions
1879     wxRichTextCommand*      m_batchedCommand;
1880
1881     /// Whether to suppress undo
1882     int                     m_suppressUndo;
1883
1884     /// Style sheet, if any
1885     wxRichTextStyleSheet*   m_styleSheet;
1886
1887     /// List of event handlers that will be notified of events
1888     wxList                  m_eventHandlers;
1889
1890     /// Stack of attributes for convenience functions
1891     wxList                  m_attributeStack;
1892
1893     /// Flags to be passed to handlers
1894     int                     m_handlerFlags;
1895
1896     /// File handlers
1897     static wxList           sm_handlers;
1898
1899     /// Renderer
1900     static wxRichTextRenderer* sm_renderer;
1901
1902     /// Minimum margin between bullet and paragraph in 10ths of a mm
1903     static int              sm_bulletRightMargin;
1904
1905     /// Factor to multiply by character height to get a reasonable bullet size
1906     static float            sm_bulletProportion;
1907 };
1908
1909 /*!
1910  * The command identifiers
1911  *
1912  */
1913
1914 enum wxRichTextCommandId
1915 {
1916     wxRICHTEXT_INSERT,
1917     wxRICHTEXT_DELETE,
1918     wxRICHTEXT_CHANGE_STYLE
1919 };
1920
1921 /*!
1922  * Command classes for undo/redo
1923  *
1924  */
1925
1926 class WXDLLIMPEXP_RICHTEXT wxRichTextAction;
1927 class WXDLLIMPEXP_RICHTEXT wxRichTextCommand: public wxCommand
1928 {
1929 public:
1930     // Ctor for one action
1931     wxRichTextCommand(const wxString& name, wxRichTextCommandId id, wxRichTextBuffer* buffer,
1932         wxRichTextCtrl* ctrl, bool ignoreFirstTime = false);
1933
1934     // Ctor for multiple actions
1935     wxRichTextCommand(const wxString& name);
1936
1937     virtual ~wxRichTextCommand();
1938
1939     bool Do();
1940     bool Undo();
1941
1942     void AddAction(wxRichTextAction* action);
1943     void ClearActions();
1944
1945     wxList& GetActions() { return m_actions; }
1946
1947 protected:
1948
1949     wxList  m_actions;
1950 };
1951
1952 /*!
1953  * wxRichTextAction class declaration
1954  * There can be more than one action in a command.
1955  */
1956
1957 class WXDLLIMPEXP_RICHTEXT wxRichTextAction: public wxObject
1958 {
1959 public:
1960     wxRichTextAction(wxRichTextCommand* cmd, const wxString& name, wxRichTextCommandId id, wxRichTextBuffer* buffer,
1961         wxRichTextCtrl* ctrl, bool ignoreFirstTime = false);
1962
1963     virtual ~wxRichTextAction();
1964
1965     bool Do();
1966     bool Undo();
1967
1968     /// Update the control appearance
1969     void UpdateAppearance(long caretPosition, bool sendUpdateEvent = false);
1970
1971     /// Replace the buffer paragraphs with the given fragment.
1972     void ApplyParagraphs(const wxRichTextParagraphLayoutBox& fragment);
1973
1974     /// Get the fragments
1975     wxRichTextParagraphLayoutBox& GetNewParagraphs() { return m_newParagraphs; }
1976     wxRichTextParagraphLayoutBox& GetOldParagraphs() { return m_oldParagraphs; }
1977
1978     /// Set/get the position used for e.g. insertion
1979     void SetPosition(long pos) { m_position = pos; }
1980     long GetPosition() const { return m_position; }
1981
1982     /// Set/get the range for e.g. deletion
1983     void SetRange(const wxRichTextRange& range) { m_range = range; }
1984     const wxRichTextRange& GetRange() const { return m_range; }
1985
1986     /// Get name
1987     const wxString& GetName() const { return m_name; }
1988
1989 protected:
1990     // Action name
1991     wxString                        m_name;
1992
1993     // Buffer
1994     wxRichTextBuffer*               m_buffer;
1995
1996     // Control
1997     wxRichTextCtrl*                 m_ctrl;
1998
1999     // Stores the new paragraphs
2000     wxRichTextParagraphLayoutBox    m_newParagraphs;
2001
2002     // Stores the old paragraphs
2003     wxRichTextParagraphLayoutBox    m_oldParagraphs;
2004
2005     // The affected range
2006     wxRichTextRange                 m_range;
2007
2008     // The insertion point for this command
2009     long                            m_position;
2010
2011     // Ignore 1st 'Do' operation because we already did it
2012     bool                            m_ignoreThis;
2013
2014     // The command identifier
2015     wxRichTextCommandId             m_cmdId;
2016 };
2017
2018 /*!
2019  * Handler flags
2020  */
2021
2022 // Include style sheet when loading and saving
2023 #define wxRICHTEXT_HANDLER_INCLUDE_STYLESHEET       0x0001
2024
2025 // Save images to memory file system in HTML handler
2026 #define wxRICHTEXT_HANDLER_SAVE_IMAGES_TO_MEMORY    0x0010
2027
2028 // Save images to files in HTML handler
2029 #define wxRICHTEXT_HANDLER_SAVE_IMAGES_TO_FILES     0x0020
2030
2031 // Save images as inline base64 data in HTML handler
2032 #define wxRICHTEXT_HANDLER_SAVE_IMAGES_TO_BASE64    0x0040
2033
2034 /*!
2035  * wxRichTextFileHandler
2036  * Base class for file handlers
2037  */
2038
2039 class WXDLLIMPEXP_RICHTEXT wxRichTextFileHandler: public wxObject
2040 {
2041     DECLARE_CLASS(wxRichTextFileHandler)
2042 public:
2043     wxRichTextFileHandler(const wxString& name = wxEmptyString, const wxString& ext = wxEmptyString, int type = 0)
2044         : m_name(name), m_extension(ext), m_type(type), m_flags(0), m_visible(true)
2045         { }
2046
2047 #if wxUSE_STREAMS
2048     bool LoadFile(wxRichTextBuffer *buffer, wxInputStream& stream)
2049     { return DoLoadFile(buffer, stream); }
2050     bool SaveFile(wxRichTextBuffer *buffer, wxOutputStream& stream)
2051     { return DoSaveFile(buffer, stream); }
2052 #endif
2053
2054     bool LoadFile(wxRichTextBuffer *buffer, const wxString& filename);
2055     bool SaveFile(wxRichTextBuffer *buffer, const wxString& filename);
2056
2057     /// Can we handle this filename (if using files)? By default, checks the extension.
2058     virtual bool CanHandle(const wxString& filename) const;
2059
2060     /// Can we save using this handler?
2061     virtual bool CanSave() const { return false; }
2062
2063     /// Can we load using this handler?
2064     virtual bool CanLoad() const { return false; }
2065
2066     /// Should this handler be visible to the user?
2067     virtual bool IsVisible() const { return m_visible; }
2068     virtual void SetVisible(bool visible) { m_visible = visible; }
2069
2070     /// The name of the nandler
2071     void SetName(const wxString& name) { m_name = name; }
2072     wxString GetName() const { return m_name; }
2073
2074     /// The default extension to recognise
2075     void SetExtension(const wxString& ext) { m_extension = ext; }
2076     wxString GetExtension() const { return m_extension; }
2077
2078     /// The handler type
2079     void SetType(int type) { m_type = type; }
2080     int GetType() const { return m_type; }
2081
2082     /// Flags controlling how loading and saving is done
2083     void SetFlags(int flags) { m_flags = flags; }
2084     int GetFlags() const { return m_flags; }
2085
2086     /// Encoding to use when saving a file. If empty, a suitable encoding is chosen
2087     void SetEncoding(const wxString& encoding) { m_encoding = encoding; }
2088     const wxString& GetEncoding() const { return m_encoding; }
2089
2090 protected:
2091
2092 #if wxUSE_STREAMS
2093     virtual bool DoLoadFile(wxRichTextBuffer *buffer, wxInputStream& stream) = 0;
2094     virtual bool DoSaveFile(wxRichTextBuffer *buffer, wxOutputStream& stream) = 0;
2095 #endif
2096
2097     wxString  m_name;
2098     wxString  m_encoding;
2099     wxString  m_extension;
2100     int       m_type;
2101     int       m_flags;
2102     bool      m_visible;
2103 };
2104
2105 /*!
2106  * wxRichTextPlainTextHandler
2107  * Plain text handler
2108  */
2109
2110 class WXDLLIMPEXP_RICHTEXT wxRichTextPlainTextHandler: public wxRichTextFileHandler
2111 {
2112     DECLARE_CLASS(wxRichTextPlainTextHandler)
2113 public:
2114     wxRichTextPlainTextHandler(const wxString& name = wxT("Text"), const wxString& ext = wxT("txt"), int type = wxRICHTEXT_TYPE_TEXT)
2115         : wxRichTextFileHandler(name, ext, type)
2116         { }
2117
2118     /// Can we save using this handler?
2119     virtual bool CanSave() const { return true; }
2120
2121     /// Can we load using this handler?
2122     virtual bool CanLoad() const { return true; }
2123
2124 protected:
2125
2126 #if wxUSE_STREAMS
2127     virtual bool DoLoadFile(wxRichTextBuffer *buffer, wxInputStream& stream);
2128     virtual bool DoSaveFile(wxRichTextBuffer *buffer, wxOutputStream& stream);
2129 #endif
2130
2131 };
2132
2133 #if wxUSE_DATAOBJ
2134
2135 /*!
2136  * The data object for a wxRichTextBuffer
2137  */
2138
2139 class WXDLLIMPEXP_RICHTEXT wxRichTextBufferDataObject: public wxDataObjectSimple
2140 {
2141 public:
2142     // ctor doesn't copy the pointer, so it shouldn't go away while this object
2143     // is alive
2144     wxRichTextBufferDataObject(wxRichTextBuffer* richTextBuffer = (wxRichTextBuffer*) NULL);
2145     virtual ~wxRichTextBufferDataObject();
2146
2147     // after a call to this function, the buffer is owned by the caller and it
2148     // is responsible for deleting it
2149     wxRichTextBuffer* GetRichTextBuffer();
2150
2151     // Returns the id for the new data format
2152     static const wxChar* GetRichTextBufferFormatId() { return ms_richTextBufferFormatId; }
2153
2154     // base class pure virtuals
2155
2156     virtual wxDataFormat GetPreferredFormat(Direction dir) const;
2157     virtual size_t GetDataSize() const;
2158     virtual bool GetDataHere(void *pBuf) const;
2159     virtual bool SetData(size_t len, const void *buf);
2160
2161     // prevent warnings
2162
2163     virtual size_t GetDataSize(const wxDataFormat&) const { return GetDataSize(); }
2164     virtual bool GetDataHere(const wxDataFormat&, void *buf) const { return GetDataHere(buf); }
2165     virtual bool SetData(const wxDataFormat&, size_t len, const void *buf) { return SetData(len, buf); }
2166
2167 private:
2168     wxDataFormat            m_formatRichTextBuffer;     // our custom format
2169     wxRichTextBuffer*       m_richTextBuffer;           // our data
2170     static const wxChar*    ms_richTextBufferFormatId;  // our format id
2171 };
2172
2173 #endif
2174
2175 /*!
2176  * wxRichTextRenderer isolates common drawing functionality
2177  */
2178
2179 class WXDLLIMPEXP_RICHTEXT wxRichTextRenderer: public wxObject
2180 {
2181 public:
2182     wxRichTextRenderer() {}
2183     virtual ~wxRichTextRenderer() {}
2184
2185     /// Draw a standard bullet, as specified by the value of GetBulletName
2186     virtual bool DrawStandardBullet(wxRichTextParagraph* paragraph, wxDC& dc, const wxTextAttrEx& attr, const wxRect& rect) = 0;
2187
2188     /// Draw a bullet that can be described by text, such as numbered or symbol bullets
2189     virtual bool DrawTextBullet(wxRichTextParagraph* paragraph, wxDC& dc, const wxTextAttrEx& attr, const wxRect& rect, const wxString& text) = 0;
2190
2191     /// Draw a bitmap bullet, where the bullet bitmap is specified by the value of GetBulletName
2192     virtual bool DrawBitmapBullet(wxRichTextParagraph* paragraph, wxDC& dc, const wxTextAttrEx& attr, const wxRect& rect) = 0;
2193
2194     /// Enumerate the standard bullet names currently supported
2195     virtual bool EnumerateStandardBulletNames(wxArrayString& bulletNames) = 0;
2196 };
2197
2198 /*!
2199  * wxRichTextStdRenderer: standard renderer
2200  */
2201
2202 class WXDLLIMPEXP_RICHTEXT wxRichTextStdRenderer: public wxRichTextRenderer
2203 {
2204 public:
2205     wxRichTextStdRenderer() {}
2206
2207     /// Draw a standard bullet, as specified by the value of GetBulletName
2208     virtual bool DrawStandardBullet(wxRichTextParagraph* paragraph, wxDC& dc, const wxTextAttrEx& attr, const wxRect& rect);
2209
2210     /// Draw a bullet that can be described by text, such as numbered or symbol bullets
2211     virtual bool DrawTextBullet(wxRichTextParagraph* paragraph, wxDC& dc, const wxTextAttrEx& attr, const wxRect& rect, const wxString& text);
2212
2213     /// Draw a bitmap bullet, where the bullet bitmap is specified by the value of GetBulletName
2214     virtual bool DrawBitmapBullet(wxRichTextParagraph* paragraph, wxDC& dc, const wxTextAttrEx& attr, const wxRect& rect);
2215
2216     /// Enumerate the standard bullet names currently supported
2217     virtual bool EnumerateStandardBulletNames(wxArrayString& bulletNames);
2218 };
2219
2220 /*!
2221  * Utilities
2222  *
2223  */
2224
2225 inline bool wxRichTextHasStyle(int flags, int style)
2226 {
2227     return ((flags & style) == style);
2228 }
2229
2230 /// Compare two attribute objects
2231 WXDLLIMPEXP_RICHTEXT bool wxTextAttrEq(const wxTextAttrEx& attr1, const wxTextAttrEx& attr2);
2232 WXDLLIMPEXP_RICHTEXT bool wxTextAttrEq(const wxTextAttr& attr1, const wxRichTextAttr& attr2);
2233
2234 /// Compare two attribute objects, but take into account the flags
2235 /// specifying attributes of interest.
2236 WXDLLIMPEXP_RICHTEXT bool wxTextAttrEqPartial(const wxTextAttrEx& attr1, const wxTextAttrEx& attr2, int flags);
2237 WXDLLIMPEXP_RICHTEXT bool wxTextAttrEqPartial(const wxTextAttrEx& attr1, const wxRichTextAttr& attr2, int flags);
2238
2239 /// Apply one style to another
2240 WXDLLIMPEXP_RICHTEXT bool wxRichTextApplyStyle(wxTextAttrEx& destStyle, const wxTextAttrEx& style);
2241 WXDLLIMPEXP_RICHTEXT bool wxRichTextApplyStyle(wxRichTextAttr& destStyle, const wxTextAttrEx& style);
2242 WXDLLIMPEXP_RICHTEXT bool wxRichTextApplyStyle(wxTextAttrEx& destStyle, const wxRichTextAttr& style, wxRichTextAttr* compareWith = NULL);
2243
2244 /// Compare tabs
2245 WXDLLIMPEXP_RICHTEXT bool wxRichTextTabsEq(const wxArrayInt& tabs1, const wxArrayInt& tabs2);
2246
2247 /// Set the font without changing the font attributes
2248 WXDLLIMPEXP_RICHTEXT void wxSetFontPreservingStyles(wxTextAttr& attr, const wxFont& font);
2249
2250 /// Convert a decimal to Roman numerals
2251 WXDLLIMPEXP_RICHTEXT wxString wxRichTextDecimalToRoman(long n);
2252
2253 WXDLLIMPEXP_RICHTEXT void wxRichTextModuleInit();
2254
2255 #endif
2256     // wxUSE_RICHTEXT
2257
2258 #endif
2259     // _WX_RICHTEXTBUFFER_H_
2260