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
 103 /*!
 104  * Flags determining the available space, passed to Layout
 105  */
 106
 107 #define wxRICHTEXT_FIXED_WIDTH      0x01
 108 #define wxRICHTEXT_FIXED_HEIGHT     0x02
 109 #define wxRICHTEXT_VARIABLE_WIDTH   0x04
 110 #define wxRICHTEXT_VARIABLE_HEIGHT  0x08
 111
 112 // Only lay out the part of the buffer that lies within
 113 // the rect passed to Layout.
 114 #define wxRICHTEXT_LAYOUT_SPECIFIED_RECT 0x10
 115
 116 /*!
 117  * Flags returned from hit-testing
 118  */
 119
 120 // The point was not on this object
 121 #define wxRICHTEXT_HITTEST_NONE     0x01
 122 // The point was before the position returned from HitTest
 123 #define wxRICHTEXT_HITTEST_BEFORE   0x02
 124 // The point was after the position returned from HitTest
 125 #define wxRICHTEXT_HITTEST_AFTER    0x04
 126 // The point was on the position returned from HitTest
 127 #define wxRICHTEXT_HITTEST_ON       0x08
 128
 129 /*!
 130  * Flags for GetRangeSize
 131  */
 132
 133 #define wxRICHTEXT_FORMATTED        0x01
 134 #define wxRICHTEXT_UNFORMATTED      0x02
 135
 136 /*!
 137  * Flags for SetStyle/SetListStyle
 138  */
 139
 140 #define wxRICHTEXT_SETSTYLE_NONE            0x00
 141
 142 // Specifies that this operation should be undoable
 143 #define wxRICHTEXT_SETSTYLE_WITH_UNDO       0x01
 144
 145 // Specifies that the style should not be applied if the
 146 // combined style at this point is already the style in question.
 147 #define wxRICHTEXT_SETSTYLE_OPTIMIZE        0x02
 148
 149 // Specifies that the style should only be applied to paragraphs,
 150 // and not the content. This allows content styling to be
 151 // preserved independently from that of e.g. a named paragraph style.
 152 #define wxRICHTEXT_SETSTYLE_PARAGRAPHS_ONLY 0x04
 153
 154 // Specifies that the style should only be applied to characters,
 155 // and not the paragraph. This allows content styling to be
 156 // preserved independently from that of e.g. a named paragraph style.
 157 #define wxRICHTEXT_SETSTYLE_CHARACTERS_ONLY 0x08
 158
 159 // For SetListStyle only: specifies starting from the given number, otherwise
 160 // deduces number from existing attributes
 161 #define wxRICHTEXT_SETSTYLE_RENUMBER        0x10
 162
 163 // For SetListStyle only: specifies the list level for all paragraphs, otherwise
 164 // the current indentation will be used
 165 #define wxRICHTEXT_SETSTYLE_SPECIFY_LEVEL   0x20
 166
 167 /*!
 168  * Flags for text insertion
 169  */
 170
 171 #define wxRICHTEXT_INSERT_NONE                              0x00
 172 #define wxRICHTEXT_INSERT_WITH_PREVIOUS_PARAGRAPH_STYLE     0x01
 173
 174 /*!
 175  * Extra formatting flags not in wxTextAttr
 176  */
 177
 178 #define wxTEXT_ATTR_PARA_SPACING_AFTER      0x00000800
 179 #define wxTEXT_ATTR_PARA_SPACING_BEFORE     0x00001000
 180 #define wxTEXT_ATTR_LINE_SPACING            0x00002000
 181 #define wxTEXT_ATTR_CHARACTER_STYLE_NAME    0x00004000
 182 #define wxTEXT_ATTR_PARAGRAPH_STYLE_NAME    0x00008000
 183 #define wxTEXT_ATTR_BULLET_STYLE            0x00010000
 184 #define wxTEXT_ATTR_BULLET_NUMBER           0x00020000
 185 #define wxTEXT_ATTR_BULLET_SYMBOL           0x00040000
 186 #define wxTEXT_ATTR_LIST_STYLE_NAME         0x00080000
 187
 188 /*!
 189  * Styles for wxTextAttrEx::SetBulletStyle
 190  */
 191
 192 #define wxTEXT_ATTR_BULLET_STYLE_NONE           0x0000
 193 #define wxTEXT_ATTR_BULLET_STYLE_ARABIC         0x0001
 194 #define wxTEXT_ATTR_BULLET_STYLE_LETTERS_UPPER  0x0002
 195 #define wxTEXT_ATTR_BULLET_STYLE_LETTERS_LOWER  0x0004
 196 #define wxTEXT_ATTR_BULLET_STYLE_ROMAN_UPPER    0x0008
 197 #define wxTEXT_ATTR_BULLET_STYLE_ROMAN_LOWER    0x0010
 198 #define wxTEXT_ATTR_BULLET_STYLE_SYMBOL         0x0020
 199 #define wxTEXT_ATTR_BULLET_STYLE_BITMAP         0x0040
 200 #define wxTEXT_ATTR_BULLET_STYLE_PARENTHESES    0x0080
 201 #define wxTEXT_ATTR_BULLET_STYLE_PERIOD         0x0100
 202
 203 /*!
 204  * Line spacing values
 205  */
 206
 207 #define wxTEXT_ATTR_LINE_SPACING_NORMAL         10
 208 #define wxTEXT_ATTR_LINE_SPACING_HALF           15
 209 #define wxTEXT_ATTR_LINE_SPACING_TWICE          20
 210
 211 /*!
 212  * wxRichTextRange class declaration
 213  * This stores beginning and end positions for a range of data.
 214  */
 215
 216 class WXDLLIMPEXP_RICHTEXT wxRichTextRange
 217 {
 218 public:
 219 // Constructors
 220
 221     wxRichTextRange() { m_start = 0; m_end = 0; }
 222     wxRichTextRange(long start, long end) { m_start = start; m_end = end; }
 223     wxRichTextRange(const wxRichTextRange& range) { m_start = range.m_start; m_end = range.m_end; }
 224     ~wxRichTextRange() {}
 225
 226     void operator =(const wxRichTextRange& range) { m_start = range.m_start; m_end = range.m_end; }
 227     bool operator ==(const wxRichTextRange& range) const { return (m_start == range.m_start && m_end == range.m_end); }
 228     bool operator !=(const wxRichTextRange& range) const { return (m_start != range.m_start && m_end != range.m_end); }
 229     wxRichTextRange operator -(const wxRichTextRange& range) const { return wxRichTextRange(m_start - range.m_start, m_end - range.m_end); }
 230     wxRichTextRange operator +(const wxRichTextRange& range) const { return wxRichTextRange(m_start + range.m_start, m_end + range.m_end); }
 231
 232     void SetRange(long start, long end) { m_start = start; m_end = end; }
 233
 234     void SetStart(long start) { m_start = start; }
 235     long GetStart() const { return m_start; }
 236
 237     void SetEnd(long end) { m_end = end; }
 238     long GetEnd() const { return m_end; }
 239
 240     /// Returns true if this range is completely outside 'range'
 241     bool IsOutside(const wxRichTextRange& range) const { return range.m_start > m_end || range.m_end < m_start; }
 242
 243     /// Returns true if this range is completely within 'range'
 244     bool IsWithin(const wxRichTextRange& range) const { return m_start >= range.m_start && m_end <= range.m_end; }
 245
 246     /// Returns true if the given position is within this range. Allow
 247     /// for the possibility of an empty range - assume the position
 248     /// is within this empty range. NO, I think we should not match with an empty range.
 249     // bool Contains(long pos) const { return pos >= m_start && (pos <= m_end || GetLength() == 0); }
 250     bool Contains(long pos) const { return pos >= m_start && pos <= m_end ; }
 251
 252     /// Limit this range to be within 'range'
 253     bool LimitTo(const wxRichTextRange& range) ;
 254
 255     /// Gets the length of the range
 256     long GetLength() const { return m_end - m_start + 1; }
 257
 258     /// Swaps the start and end
 259     void Swap() { long tmp = m_start; m_start = m_end; m_end = tmp; }
 260
 261     /// Convert to internal form: (n, n) is the range of a single character.
 262     wxRichTextRange ToInternal() const { return wxRichTextRange(m_start, m_end-1); }
 263
 264     /// Convert from internal to public API form: (n, n+1) is the range of a single character.
 265     wxRichTextRange FromInternal() const { return wxRichTextRange(m_start, m_end+1); }
 266
 267 protected:
 268     long m_start;
 269     long m_end;
 270 };
 271
 272 #define wxRICHTEXT_ALL  wxRichTextRange(-2, -2)
 273 #define wxRICHTEXT_NONE  wxRichTextRange(-1, -1)
 274
 275 /*!
 276  * wxTextAttrEx is an extended version of wxTextAttr with more paragraph attributes.
 277  */
 278
 279 class WXDLLIMPEXP_RICHTEXT wxTextAttrEx: public wxTextAttr
 280 {
 281 public:
 282     // ctors
 283     wxTextAttrEx(const wxTextAttrEx& attr);
 284     wxTextAttrEx(const wxTextAttr& attr) { Init(); (*this) = attr; }
 285     wxTextAttrEx() { Init(); }
 286
 287     // Initialise this object
 288     void Init();
 289
 290     // Assignment from a wxTextAttrEx object
 291     void operator= (const wxTextAttrEx& attr);
 292
 293     // Assignment from a wxTextAttr object
 294     void operator= (const wxTextAttr& attr);
 295
 296     // Equality test
 297     bool operator== (const wxTextAttrEx& attr) const;
 298
 299     // setters
 300     void SetCharacterStyleName(const wxString& name) { m_characterStyleName = name; SetFlags(GetFlags() | wxTEXT_ATTR_CHARACTER_STYLE_NAME); }
 301     void SetParagraphStyleName(const wxString& name) { m_paragraphStyleName = name; SetFlags(GetFlags() | wxTEXT_ATTR_PARAGRAPH_STYLE_NAME); }
 302     void SetListStyleName(const wxString& name) { m_listStyleName = name; SetFlags(GetFlags() | wxTEXT_ATTR_LIST_STYLE_NAME); }
 303     void SetParagraphSpacingAfter(int spacing) { m_paragraphSpacingAfter = spacing; SetFlags(GetFlags() | wxTEXT_ATTR_PARA_SPACING_AFTER); }
 304     void SetParagraphSpacingBefore(int spacing) { m_paragraphSpacingBefore = spacing; SetFlags(GetFlags() | wxTEXT_ATTR_PARA_SPACING_BEFORE); }
 305     void SetLineSpacing(int spacing) { m_lineSpacing = spacing; SetFlags(GetFlags() | wxTEXT_ATTR_LINE_SPACING); }
 306     void SetBulletStyle(int style) { m_bulletStyle = style; SetFlags(GetFlags() | wxTEXT_ATTR_BULLET_STYLE); }
 307     void SetBulletNumber(int n) { m_bulletNumber = n; SetFlags(GetFlags() | wxTEXT_ATTR_BULLET_NUMBER); }
 308     void SetBulletSymbol(wxChar symbol) { m_bulletSymbol = symbol; SetFlags(GetFlags() | wxTEXT_ATTR_BULLET_SYMBOL); }
 309     void SetBulletFont(const wxString& bulletFont) { m_bulletFont = bulletFont; }
 310
 311     const wxString& GetCharacterStyleName() const { return m_characterStyleName; }
 312     const wxString& GetParagraphStyleName() const { return m_paragraphStyleName; }
 313     const wxString& GetListStyleName() const { return m_listStyleName; }
 314     int GetParagraphSpacingAfter() const { return m_paragraphSpacingAfter; }
 315     int GetParagraphSpacingBefore() const { return m_paragraphSpacingBefore; }
 316     int GetLineSpacing() const { return m_lineSpacing; }
 317     int GetBulletStyle() const { return m_bulletStyle; }
 318     int GetBulletNumber() const { return m_bulletNumber; }
 319     wxChar GetBulletSymbol() const { return m_bulletSymbol; }
 320     const wxString& GetBulletFont() const { return m_bulletFont; }
 321
 322     bool HasWeight() const { return (GetFlags() & wxTEXT_ATTR_FONT_WEIGHT) != 0; }
 323     bool HasSize() const { return (GetFlags() & wxTEXT_ATTR_FONT_SIZE) != 0; }
 324     bool HasItalic() const { return (GetFlags() & wxTEXT_ATTR_FONT_ITALIC) != 0; }
 325     bool HasUnderlined() const { return (GetFlags() & wxTEXT_ATTR_FONT_UNDERLINE) != 0; }
 326     bool HasFaceName() const { return (GetFlags() & wxTEXT_ATTR_FONT_FACE) != 0; }
 327
 328     bool HasParagraphSpacingAfter() const { return HasFlag(wxTEXT_ATTR_PARA_SPACING_AFTER); }
 329     bool HasParagraphSpacingBefore() const { return HasFlag(wxTEXT_ATTR_PARA_SPACING_BEFORE); }
 330     bool HasLineSpacing() const { return HasFlag(wxTEXT_ATTR_LINE_SPACING); }
 331     bool HasCharacterStyleName() const { return HasFlag(wxTEXT_ATTR_CHARACTER_STYLE_NAME) || !m_characterStyleName.IsEmpty(); }
 332     bool HasParagraphStyleName() const { return HasFlag(wxTEXT_ATTR_PARAGRAPH_STYLE_NAME) || !m_paragraphStyleName.IsEmpty(); }
 333     bool HasListStyleName() const { return HasFlag(wxTEXT_ATTR_LIST_STYLE_NAME) || !m_listStyleName.IsEmpty(); }
 334     bool HasBulletStyle() const { return HasFlag(wxTEXT_ATTR_BULLET_STYLE); }
 335     bool HasBulletNumber() const { return HasFlag(wxTEXT_ATTR_BULLET_NUMBER); }
 336     bool HasBulletSymbol() const { return HasFlag(wxTEXT_ATTR_BULLET_SYMBOL); }
 337
 338     // Is this a character style?
 339     bool IsCharacterStyle() const { return (0 != (GetFlags() & (wxTEXT_ATTR_FONT | wxTEXT_ATTR_BACKGROUND_COLOUR | wxTEXT_ATTR_TEXT_COLOUR))); }
 340     bool IsParagraphStyle() const { return (0 != (GetFlags() & (wxTEXT_ATTR_ALIGNMENT|wxTEXT_ATTR_LEFT_INDENT|wxTEXT_ATTR_RIGHT_INDENT|wxTEXT_ATTR_TABS|
 341                             wxTEXT_ATTR_PARA_SPACING_BEFORE|wxTEXT_ATTR_PARA_SPACING_AFTER|wxTEXT_ATTR_LINE_SPACING|
 342                             wxTEXT_ATTR_BULLET_STYLE|wxTEXT_ATTR_BULLET_NUMBER))); }
 343
 344     // returns false if we have any attributes set, true otherwise
 345     bool IsDefault() const
 346     {
 347         return !HasTextColour() && !HasBackgroundColour() && !HasFont() && !HasAlignment() &&
 348                !HasTabs() && !HasLeftIndent() && !HasRightIndent() &&
 349                !HasParagraphSpacingAfter() && !HasParagraphSpacingBefore() && !HasLineSpacing() &&
 350                !HasCharacterStyleName() && !HasParagraphStyleName() && !HasListStyleName() &&
 351                !HasBulletNumber() && !HasBulletStyle() && !HasBulletSymbol();
 352     }
 353
 354     // return the attribute having the valid font and colours: it uses the
 355     // attributes set in attr and falls back first to attrDefault and then to
 356     // the text control font/colours for those attributes which are not set
 357     static wxTextAttrEx CombineEx(const wxTextAttrEx& attr,
 358                               const wxTextAttrEx& attrDef,
 359                               const wxTextCtrlBase *text);
 360
 361 private:
 362     // Paragraph styles
 363     int                 m_paragraphSpacingAfter;
 364     int                 m_paragraphSpacingBefore;
 365     int                 m_lineSpacing;
 366     int                 m_bulletStyle;
 367     int                 m_bulletNumber;
 368     wxChar              m_bulletSymbol;
 369     wxString            m_bulletFont;
 370
 371     // Character style
 372     wxString            m_characterStyleName;
 373
 374     // Paragraph style
 375     wxString            m_paragraphStyleName;
 376
 377     // List style
 378     wxString            m_listStyleName;
 379 };
 380
 381 /*!
 382  * wxRichTextAttr stores attributes without a wxFont object, so is a much more
 383  * efficient way to query styles.
 384  */
 385
 386 class WXDLLIMPEXP_RICHTEXT wxRichTextAttr
 387 {
 388 public:
 389     // ctors
 390     wxRichTextAttr(const wxTextAttrEx& attr);
 391     wxRichTextAttr() { Init(); }
 392     wxRichTextAttr(const wxColour& colText,
 393                const wxColour& colBack = wxNullColour,
 394                wxTextAttrAlignment alignment = wxTEXT_ALIGNMENT_DEFAULT);
 395
 396     // Initialise this object.
 397     void Init();
 398
 399     // Assignment from a wxRichTextAttr object.
 400     void operator= (const wxRichTextAttr& attr);
 401
 402     // Assignment from a wxTextAttrEx object.
 403     void operator= (const wxTextAttrEx& attr);
 404
 405     // Equality test
 406     bool operator== (const wxRichTextAttr& attr) const;
 407
 408     // Making a wxTextAttrEx object.
 409     operator wxTextAttrEx () const ;
 410
 411     // Copy to a wxTextAttr
 412     void CopyTo(wxTextAttrEx& attr) const;
 413
 414     // Create font from font attributes.
 415     wxFont CreateFont() const;
 416
 417     // Get attributes from font.
 418     bool GetFontAttributes(const wxFont& font);
 419
 420     // setters
 421     void SetTextColour(const wxColour& colText) { m_colText = colText; m_flags |= wxTEXT_ATTR_TEXT_COLOUR; }
 422     void SetBackgroundColour(const wxColour& colBack) { m_colBack = colBack; m_flags |= wxTEXT_ATTR_BACKGROUND_COLOUR; }
 423     void SetAlignment(wxTextAttrAlignment alignment) { m_textAlignment = alignment; m_flags |= wxTEXT_ATTR_ALIGNMENT; }
 424     void SetTabs(const wxArrayInt& tabs) { m_tabs = tabs; m_flags |= wxTEXT_ATTR_TABS; }
 425     void SetLeftIndent(int indent, int subIndent = 0) { m_leftIndent = indent; m_leftSubIndent = subIndent; m_flags |= wxTEXT_ATTR_LEFT_INDENT; }
 426     void SetRightIndent(int indent) { m_rightIndent = indent; m_flags |= wxTEXT_ATTR_RIGHT_INDENT; }
 427
 428     void SetFontSize(int pointSize) { m_fontSize = pointSize; m_flags |= wxTEXT_ATTR_FONT_SIZE; }
 429     void SetFontStyle(int fontStyle) { m_fontStyle = fontStyle; m_flags |= wxTEXT_ATTR_FONT_ITALIC; }
 430     void SetFontWeight(int fontWeight) { m_fontWeight = fontWeight; m_flags |= wxTEXT_ATTR_FONT_WEIGHT; }
 431     void SetFontFaceName(const wxString& faceName) { m_fontFaceName = faceName; m_flags |= wxTEXT_ATTR_FONT_FACE; }
 432     void SetFontUnderlined(bool underlined) { m_fontUnderlined = underlined; m_flags |= wxTEXT_ATTR_FONT_UNDERLINE; }
 433
 434     void SetFlags(long flags) { m_flags = flags; }
 435
 436     void SetCharacterStyleName(const wxString& name) { m_characterStyleName = name; m_flags |= wxTEXT_ATTR_CHARACTER_STYLE_NAME; }
 437     void SetParagraphStyleName(const wxString& name) { m_paragraphStyleName = name; m_flags |= wxTEXT_ATTR_PARAGRAPH_STYLE_NAME; }
 438     void SetListStyleName(const wxString& name) { m_listStyleName = name; SetFlags(GetFlags() | wxTEXT_ATTR_LIST_STYLE_NAME); }
 439     void SetParagraphSpacingAfter(int spacing) { m_paragraphSpacingAfter = spacing; m_flags |= wxTEXT_ATTR_PARA_SPACING_AFTER; }
 440     void SetParagraphSpacingBefore(int spacing) { m_paragraphSpacingBefore = spacing; m_flags |= wxTEXT_ATTR_PARA_SPACING_BEFORE; }
 441     void SetLineSpacing(int spacing) { m_lineSpacing = spacing; m_flags |= wxTEXT_ATTR_LINE_SPACING; }
 442     void SetBulletStyle(int style) { m_bulletStyle = style; m_flags |= wxTEXT_ATTR_BULLET_STYLE; }
 443     void SetBulletNumber(int n) { m_bulletNumber = n; m_flags |= wxTEXT_ATTR_BULLET_NUMBER; }
 444     void SetBulletSymbol(wxChar symbol) { m_bulletSymbol = symbol; m_flags |= wxTEXT_ATTR_BULLET_NUMBER; }
 445     void SetBulletFont(const wxString& bulletFont) { m_bulletFont = bulletFont; }
 446
 447     const wxColour& GetTextColour() const { return m_colText; }
 448     const wxColour& GetBackgroundColour() const { return m_colBack; }
 449     wxTextAttrAlignment GetAlignment() const { return m_textAlignment; }
 450     const wxArrayInt& GetTabs() const { return m_tabs; }
 451     long GetLeftIndent() const { return m_leftIndent; }
 452     long GetLeftSubIndent() const { return m_leftSubIndent; }
 453     long GetRightIndent() const { return m_rightIndent; }
 454     long GetFlags() const { return m_flags; }
 455
 456     int GetFontSize() const { return m_fontSize; }
 457     int GetFontStyle() const { return m_fontStyle; }
 458     int GetFontWeight() const { return m_fontWeight; }
 459     bool GetFontUnderlined() const { return m_fontUnderlined; }
 460     const wxString& GetFontFaceName() const { return m_fontFaceName; }
 461
 462     const wxString& GetCharacterStyleName() const { return m_characterStyleName; }
 463     const wxString& GetParagraphStyleName() const { return m_paragraphStyleName; }
 464     const wxString& GetListStyleName() const { return m_listStyleName; }
 465     int GetParagraphSpacingAfter() const { return m_paragraphSpacingAfter; }
 466     int GetParagraphSpacingBefore() const { return m_paragraphSpacingBefore; }
 467     int GetLineSpacing() const { return m_lineSpacing; }
 468     int GetBulletStyle() const { return m_bulletStyle; }
 469     int GetBulletNumber() const { return m_bulletNumber; }
 470     wxChar GetBulletSymbol() const { return m_bulletSymbol; }
 471     const wxString& GetBulletFont() const { return m_bulletFont; }
 472
 473     // accessors
 474     bool HasTextColour() const { return m_colText.Ok() && HasFlag(wxTEXT_ATTR_TEXT_COLOUR) ; }
 475     bool HasBackgroundColour() const { return m_colBack.Ok() && HasFlag(wxTEXT_ATTR_BACKGROUND_COLOUR) ; }
 476     bool HasAlignment() const { return (m_textAlignment != wxTEXT_ALIGNMENT_DEFAULT) || ((m_flags & wxTEXT_ATTR_ALIGNMENT) != 0) ; }
 477     bool HasTabs() const { return (m_flags & wxTEXT_ATTR_TABS) != 0 ; }
 478     bool HasLeftIndent() const { return (m_flags & wxTEXT_ATTR_LEFT_INDENT) != 0 ; }
 479     bool HasRightIndent() const { return (m_flags & wxTEXT_ATTR_RIGHT_INDENT) != 0 ; }
 480     bool HasWeight() const { return (m_flags & wxTEXT_ATTR_FONT_WEIGHT) != 0; }
 481     bool HasSize() const { return (m_flags & wxTEXT_ATTR_FONT_SIZE) != 0; }
 482     bool HasItalic() const { return (m_flags & wxTEXT_ATTR_FONT_ITALIC) != 0; }
 483     bool HasUnderlined() const { return (m_flags & wxTEXT_ATTR_FONT_UNDERLINE) != 0; }
 484     bool HasFaceName() const { return (m_flags & wxTEXT_ATTR_FONT_FACE) != 0; }
 485     bool HasFont() const { return (m_flags & (wxTEXT_ATTR_FONT)) != 0; }
 486
 487     bool HasParagraphSpacingAfter() const { return (m_flags & wxTEXT_ATTR_PARA_SPACING_AFTER) != 0; }
 488     bool HasParagraphSpacingBefore() const { return (m_flags & wxTEXT_ATTR_PARA_SPACING_BEFORE) != 0; }
 489     bool HasLineSpacing() const { return (m_flags & wxTEXT_ATTR_LINE_SPACING) != 0; }
 490     bool HasCharacterStyleName() const { return (m_flags & wxTEXT_ATTR_CHARACTER_STYLE_NAME) != 0 || !m_characterStyleName.IsEmpty(); }
 491     bool HasParagraphStyleName() const { return (m_flags & wxTEXT_ATTR_PARAGRAPH_STYLE_NAME) != 0 || !m_paragraphStyleName.IsEmpty(); }
 492     bool HasListStyleName() const { return HasFlag(wxTEXT_ATTR_LIST_STYLE_NAME) || !m_listStyleName.IsEmpty(); }
 493     bool HasBulletStyle() const { return (m_flags & wxTEXT_ATTR_BULLET_STYLE) != 0; }
 494     bool HasBulletNumber() const { return (m_flags & wxTEXT_ATTR_BULLET_NUMBER) != 0; }
 495     bool HasBulletSymbol() const { return (m_flags & wxTEXT_ATTR_BULLET_SYMBOL) != 0; }
 496
 497     bool HasFlag(long flag) const { return (m_flags & flag) != 0; }
 498
 499     // Is this a character style?
 500     bool IsCharacterStyle() const { return (0 != (GetFlags() & (wxTEXT_ATTR_FONT | wxTEXT_ATTR_BACKGROUND_COLOUR | wxTEXT_ATTR_TEXT_COLOUR))); }
 501     bool IsParagraphStyle() const { return (0 != (GetFlags() & (wxTEXT_ATTR_ALIGNMENT|wxTEXT_ATTR_LEFT_INDENT|wxTEXT_ATTR_RIGHT_INDENT|wxTEXT_ATTR_TABS|
 502                             wxTEXT_ATTR_PARA_SPACING_BEFORE|wxTEXT_ATTR_PARA_SPACING_AFTER|wxTEXT_ATTR_LINE_SPACING|
 503                             wxTEXT_ATTR_BULLET_STYLE|wxTEXT_ATTR_BULLET_NUMBER))); }
 504
 505     // returns false if we have any attributes set, true otherwise
 506     bool IsDefault() const
 507     {
 508         return !HasTextColour() && !HasBackgroundColour() && !HasFont() && !HasAlignment() &&
 509                !HasTabs() && !HasLeftIndent() && !HasRightIndent() &&
 510                !HasParagraphSpacingAfter() && !HasParagraphSpacingBefore() && !HasLineSpacing() &&
 511                !HasCharacterStyleName() && !HasParagraphStyleName() && !HasListStyleName() &&
 512                !HasBulletNumber() && !HasBulletStyle() && !HasBulletSymbol();
 513     }
 514
 515     // return the attribute having the valid font and colours: it uses the
 516     // attributes set in attr and falls back first to attrDefault and then to
 517     // the text control font/colours for those attributes which are not set
 518     static wxRichTextAttr Combine(const wxRichTextAttr& attr,
 519                               const wxRichTextAttr& attrDef,
 520                               const wxTextCtrlBase *text);
 521 private:
 522     long                m_flags;
 523
 524     // Paragraph styles
 525     wxArrayInt          m_tabs; // array of int: tab stops in 1/10 mm
 526     int                 m_leftIndent; // left indent in 1/10 mm
 527     int                 m_leftSubIndent; // left indent for all but the first
 528                                          // line in a paragraph relative to the
 529                                          // first line, in 1/10 mm
 530     int                 m_rightIndent; // right indent in 1/10 mm
 531     wxTextAttrAlignment m_textAlignment;
 532
 533     int                 m_paragraphSpacingAfter;
 534     int                 m_paragraphSpacingBefore;
 535     int                 m_lineSpacing;
 536     int                 m_bulletStyle;
 537     int                 m_bulletNumber;
 538     wxChar              m_bulletSymbol;
 539     wxString            m_bulletFont;
 540
 541     // Character styles
 542     wxColour            m_colText,
 543                         m_colBack;
 544     int                 m_fontSize;
 545     int                 m_fontStyle;
 546     int                 m_fontWeight;
 547     bool                m_fontUnderlined;
 548     wxString            m_fontFaceName;
 549
 550     // Character style
 551     wxString            m_characterStyleName;
 552
 553     // Paragraph style
 554     wxString            m_paragraphStyleName;
 555
 556     // List style
 557     wxString            m_listStyleName;
 558 };
 559
 560 #define wxTEXT_ATTR_CHARACTER (wxTEXT_ATTR_FONT | wxTEXT_ATTR_BACKGROUND_COLOUR | wxTEXT_ATTR_TEXT_COLOUR | wxTEXT_ATTR_CHARACTER_STYLE_NAME)
 561
 562 #define wxTEXT_ATTR_PARAGRAPH (wxTEXT_ATTR_ALIGNMENT|wxTEXT_ATTR_LEFT_INDENT|wxTEXT_ATTR_RIGHT_INDENT|wxTEXT_ATTR_TABS|\
 563     wxTEXT_ATTR_PARA_SPACING_BEFORE|wxTEXT_ATTR_PARA_SPACING_AFTER|wxTEXT_ATTR_LINE_SPACING|\
 564     wxTEXT_ATTR_BULLET_STYLE|wxTEXT_ATTR_BULLET_NUMBER|wxTEXT_ATTR_BULLET_SYMBOL|wxTEXT_ATTR_PARAGRAPH_STYLE_NAME|wxTEXT_ATTR_LIST_STYLE_NAME)
 565
 566 #define wxTEXT_ATTR_ALL (wxTEXT_ATTR_CHARACTER|wxTEXT_ATTR_PARAGRAPH)
 567
 568 /*!
 569  * wxRichTextObject class declaration
 570  * This is the base for drawable objects.
 571  */
 572
 573 class WXDLLIMPEXP_RICHTEXT wxRichTextObject: public wxObject
 574 {
 575     DECLARE_CLASS(wxRichTextObject)
 576 public:
 577 // Constructors
 578
 579     wxRichTextObject(wxRichTextObject* parent = NULL);
 580     virtual ~wxRichTextObject();
 581
 582 // Overrideables
 583
 584     /// Draw the item, within the given range. Some objects may ignore the range (for
 585     /// example paragraphs) while others must obey it (lines, to implement wrapping)
 586     virtual bool Draw(wxDC& dc, const wxRichTextRange& range, const wxRichTextRange& selectionRange, const wxRect& rect, int descent, int style) = 0;
 587
 588     /// Lay the item out at the specified position with the given size constraint.
 589     /// Layout must set the cached size.
 590     virtual bool Layout(wxDC& dc, const wxRect& rect, int style) = 0;
 591
 592     /// Hit-testing: returns a flag indicating hit test details, plus
 593     /// information about position
 594     virtual int HitTest(wxDC& WXUNUSED(dc), const wxPoint& WXUNUSED(pt), long& WXUNUSED(textPosition)) { return false; }
 595
 596     /// Finds the absolute position and row height for the given character position
 597     virtual bool FindPosition(wxDC& WXUNUSED(dc), long WXUNUSED(index), wxPoint& WXUNUSED(pt), int* WXUNUSED(height), bool WXUNUSED(forceLineStart)) { return false; }
 598
 599     /// Get the best size, i.e. the ideal starting size for this object irrespective
 600     /// of available space. For a short text string, it will be the size that exactly encloses
 601     /// the text. For a longer string, it might use the parent width for example.
 602     virtual wxSize GetBestSize() const { return m_size; }
 603
 604     /// Get the object size for the given range. Returns false if the range
 605     /// is invalid for this object.
 606     virtual bool GetRangeSize(const wxRichTextRange& range, wxSize& size, int& descent, wxDC& dc, int flags, wxPoint position = wxPoint(0,0)) const  = 0;
 607
 608     /// Do a split, returning an object containing the second part, and setting
 609     /// the first part in 'this'.
 610     virtual wxRichTextObject* DoSplit(long WXUNUSED(pos)) { return NULL; }
 611
 612     /// Calculate range. By default, guess that the object is 1 unit long.
 613     virtual void CalculateRange(long start, long& end) { end = start ; m_range.SetRange(start, end); }
 614
 615     /// Delete range
 616     virtual bool DeleteRange(const wxRichTextRange& WXUNUSED(range)) { return false; }
 617
 618     /// Returns true if the object is empty
 619     virtual bool IsEmpty() const { return false; }
 620
 621     /// Get any text in this object for the given range
 622     virtual wxString GetTextForRange(const wxRichTextRange& WXUNUSED(range)) const { return wxEmptyString; }
 623
 624     /// Returns true if this object can merge itself with the given one.
 625     virtual bool CanMerge(wxRichTextObject* WXUNUSED(object)) const { return false; }
 626
 627     /// Returns true if this object merged itself with the given one.
 628     /// The calling code will then delete the given object.
 629     virtual bool Merge(wxRichTextObject* WXUNUSED(object)) { return false; }
 630
 631     /// Dump to output stream for debugging
 632     virtual void Dump(wxTextOutputStream& stream);
 633
 634 // Accessors
 635
 636     /// Get/set the cached object size as calculated by Layout.
 637     virtual wxSize GetCachedSize() const { return m_size; }
 638     virtual void SetCachedSize(const wxSize& sz) { m_size = sz; }
 639
 640     /// Get/set the object position
 641     virtual wxPoint GetPosition() const { return m_pos; }
 642     virtual void SetPosition(const wxPoint& pos) { m_pos = pos; }
 643
 644     /// Get the rectangle enclosing the object
 645     virtual wxRect GetRect() const { return wxRect(GetPosition(), GetCachedSize()); }
 646
 647     /// Set the range
 648     void SetRange(const wxRichTextRange& range) { m_range = range; }
 649
 650     /// Get the range
 651     const wxRichTextRange& GetRange() const { return m_range; }
 652     wxRichTextRange& GetRange() { return m_range; }
 653
 654     /// Get/set dirty flag (whether the object needs Layout to be called)
 655     virtual bool GetDirty() const { return m_dirty; }
 656     virtual void SetDirty(bool dirty) { m_dirty = dirty; }
 657
 658     /// Is this composite?
 659     virtual bool IsComposite() const { return false; }
 660
 661     /// Get/set the parent.
 662     virtual wxRichTextObject* GetParent() const { return m_parent; }
 663     virtual void SetParent(wxRichTextObject* parent) { m_parent = parent; }
 664
 665     /// Set the margin around the object
 666     virtual void SetMargins(int margin);
 667     virtual void SetMargins(int leftMargin, int rightMargin, int topMargin, int bottomMargin);
 668     virtual int GetLeftMargin() const { return m_leftMargin; }
 669     virtual int GetRightMargin() const { return m_rightMargin; }
 670     virtual int GetTopMargin() const { return m_topMargin; }
 671     virtual int GetBottomMargin() const { return m_bottomMargin; }
 672
 673     /// Set attributes object
 674     void SetAttributes(const wxTextAttrEx& attr) { m_attributes = attr; }
 675     const wxTextAttrEx& GetAttributes() const { return m_attributes; }
 676     wxTextAttrEx& GetAttributes() { return m_attributes; }
 677
 678     /// Set/get stored descent
 679     void SetDescent(int descent) { m_descent = descent; }
 680     int GetDescent() const { return m_descent; }
 681
 682 // Operations
 683
 684     /// Clone the object
 685     virtual wxRichTextObject* Clone() const { return NULL; }
 686
 687     /// Copy
 688     void Copy(const wxRichTextObject& obj);
 689
 690     /// Reference-counting allows us to use the same object in multiple
 691     /// lists (not yet used)
 692     void Reference() { m_refCount ++; }
 693     void Dereference();
 694
 695     /// Convert units in tends of a millimetre to device units
 696     int ConvertTenthsMMToPixels(wxDC& dc, int units);
 697
 698 protected:
 699     wxSize                  m_size;
 700     wxPoint                 m_pos;
 701     int                     m_descent; // Descent for this object (if any)
 702     bool                    m_dirty;
 703     int                     m_refCount;
 704     wxRichTextObject*       m_parent;
 705
 706     /// The range of this object (start position to end position)
 707     wxRichTextRange         m_range;
 708
 709     /// Margins
 710     int                     m_leftMargin;
 711     int                     m_rightMargin;
 712     int                     m_topMargin;
 713     int                     m_bottomMargin;
 714
 715     /// Attributes
 716     wxTextAttrEx            m_attributes;
 717 };
 718
 719 WX_DECLARE_LIST_WITH_DECL( wxRichTextObject, wxRichTextObjectList, class WXDLLIMPEXP_RICHTEXT );
 720
 721 /*!
 722  * wxRichTextCompositeObject class declaration
 723  * Objects of this class can contain other objects.
 724  */
 725
 726 class WXDLLIMPEXP_RICHTEXT wxRichTextCompositeObject: public wxRichTextObject
 727 {
 728     DECLARE_CLASS(wxRichTextCompositeObject)
 729 public:
 730 // Constructors
 731
 732     wxRichTextCompositeObject(wxRichTextObject* parent = NULL);
 733     virtual ~wxRichTextCompositeObject();
 734
 735 // Overrideables
 736
 737     /// Hit-testing: returns a flag indicating hit test details, plus
 738     /// information about position
 739     virtual int HitTest(wxDC& dc, const wxPoint& pt, long& textPosition);
 740
 741     /// Finds the absolute position and row height for the given character position
 742     virtual bool FindPosition(wxDC& dc, long index, wxPoint& pt, int* height, bool forceLineStart);
 743
 744     /// Calculate range
 745     virtual void CalculateRange(long start, long& end);
 746
 747     /// Delete range
 748     virtual bool DeleteRange(const wxRichTextRange& range);
 749
 750     /// Get any text in this object for the given range
 751     virtual wxString GetTextForRange(const wxRichTextRange& range) const;
 752
 753     /// Dump to output stream for debugging
 754     virtual void Dump(wxTextOutputStream& stream);
 755
 756 // Accessors
 757
 758     /// Get the children
 759     wxRichTextObjectList& GetChildren() { return m_children; }
 760     const wxRichTextObjectList& GetChildren() const { return m_children; }
 761
 762     /// Get the child count
 763     size_t GetChildCount() const ;
 764
 765     /// Get the nth child
 766     wxRichTextObject* GetChild(size_t n) const ;
 767
 768     /// Get/set dirty flag
 769     virtual bool GetDirty() const { return m_dirty; }
 770     virtual void SetDirty(bool dirty) { m_dirty = dirty; }
 771
 772     /// Is this composite?
 773     virtual bool IsComposite() const { return true; }
 774
 775     /// Returns true if the buffer is empty
 776     virtual bool IsEmpty() const { return GetChildCount() == 0; }
 777
 778 // Operations
 779
 780     /// Copy
 781     void Copy(const wxRichTextCompositeObject& obj);
 782
 783     /// Assignment
 784     void operator= (const wxRichTextCompositeObject& obj) { Copy(obj); }
 785
 786     /// Append a child, returning the position
 787     size_t AppendChild(wxRichTextObject* child) ;
 788
 789     /// Insert the child in front of the given object, or at the beginning
 790     bool InsertChild(wxRichTextObject* child, wxRichTextObject* inFrontOf) ;
 791
 792     /// Delete the child
 793     bool RemoveChild(wxRichTextObject* child, bool deleteChild = false) ;
 794
 795     /// Delete all children
 796     bool DeleteChildren() ;
 797
 798     /// Recursively merge all pieces that can be merged.
 799     bool Defragment();
 800
 801 protected:
 802     wxRichTextObjectList    m_children;
 803 };
 804
 805 /*!
 806  * wxRichTextBox class declaration
 807  * This defines a 2D space to lay out objects
 808  */
 809
 810 class WXDLLIMPEXP_RICHTEXT wxRichTextBox: public wxRichTextCompositeObject
 811 {
 812     DECLARE_DYNAMIC_CLASS(wxRichTextBox)
 813 public:
 814 // Constructors
 815
 816     wxRichTextBox(wxRichTextObject* parent = NULL);
 817     wxRichTextBox(const wxRichTextBox& obj): wxRichTextCompositeObject() { Copy(obj); }
 818
 819 // Overrideables
 820
 821     /// Draw the item
 822     virtual bool Draw(wxDC& dc, const wxRichTextRange& range, const wxRichTextRange& selectionRange, const wxRect& rect, int descent, int style);
 823
 824     /// Lay the item out
 825     virtual bool Layout(wxDC& dc, const wxRect& rect, int style);
 826
 827     /// Get/set the object size for the given range. Returns false if the range
 828     /// is invalid for this object.
 829     virtual bool GetRangeSize(const wxRichTextRange& range, wxSize& size, int& descent, wxDC& dc, int flags, wxPoint position = wxPoint(0,0)) const;
 830
 831 // Accessors
 832
 833 // Operations
 834
 835     /// Clone
 836     virtual wxRichTextObject* Clone() const { return new wxRichTextBox(*this); }
 837
 838     /// Copy
 839     void Copy(const wxRichTextBox& obj);
 840
 841 protected:
 842 };
 843
 844 /*!
 845  * wxRichTextParagraphBox class declaration
 846  * This box knows how to lay out paragraphs.
 847  */
 848
 849 class WXDLLIMPEXP_RICHTEXT wxRichTextParagraphLayoutBox: public wxRichTextBox
 850 {
 851     DECLARE_DYNAMIC_CLASS(wxRichTextParagraphLayoutBox)
 852 public:
 853 // Constructors
 854
 855     wxRichTextParagraphLayoutBox(wxRichTextObject* parent = NULL);
 856     wxRichTextParagraphLayoutBox(const wxRichTextParagraphLayoutBox& obj): wxRichTextBox() { Init(); Copy(obj); }
 857
 858 // Overrideables
 859
 860     /// Draw the item
 861     virtual bool Draw(wxDC& dc, const wxRichTextRange& range, const wxRichTextRange& selectionRange, const wxRect& rect, int descent, int style);
 862
 863     /// Lay the item out
 864     virtual bool Layout(wxDC& dc, const wxRect& rect, int style);
 865
 866     /// Get/set the object size for the given range. Returns false if the range
 867     /// is invalid for this object.
 868     virtual bool GetRangeSize(const wxRichTextRange& range, wxSize& size, int& descent, wxDC& dc, int flags, wxPoint position = wxPoint(0,0)) const;
 869
 870     /// Delete range
 871     virtual bool DeleteRange(const wxRichTextRange& range);
 872
 873     /// Get any text in this object for the given range
 874     virtual wxString GetTextForRange(const wxRichTextRange& range) const;
 875
 876 // Accessors
 877
 878     /// Associate a control with the buffer, for operations that for example require refreshing the window.
 879     void SetRichTextCtrl(wxRichTextCtrl* ctrl) { m_ctrl = ctrl; }
 880
 881     /// Get the associated control.
 882     wxRichTextCtrl* GetRichTextCtrl() const { return m_ctrl; }
 883
 884     /// Get/set whether the last paragraph is partial or complete
 885     void SetPartialParagraph(bool partialPara) { m_partialParagraph = partialPara; }
 886     bool GetPartialParagraph() const { return m_partialParagraph; }
 887
 888     /// If this is a buffer, returns the current style sheet. The base layout box
 889     /// class doesn't have an associated style sheet.
 890     virtual wxRichTextStyleSheet* GetStyleSheet() const { return NULL; }
 891
 892 // Operations
 893
 894     /// Initialize the object.
 895     void Init();
 896
 897     /// Clear all children
 898     virtual void Clear();
 899
 900     /// Clear and initialize with one blank paragraph
 901     virtual void Reset();
 902
 903     /// Convenience function to add a paragraph of text
 904     virtual wxRichTextRange AddParagraph(const wxString& text, wxTextAttrEx* paraStyle = NULL);
 905
 906     /// Convenience function to add an image
 907     virtual wxRichTextRange AddImage(const wxImage& image, wxTextAttrEx* paraStyle = NULL);
 908
 909     /// Adds multiple paragraphs, based on newlines.
 910     virtual wxRichTextRange AddParagraphs(const wxString& text, wxTextAttrEx* paraStyle = NULL);
 911
 912     /// Get the line at the given position. If caretPosition is true, the position is
 913     /// a caret position, which is normally a smaller number.
 914     virtual wxRichTextLine* GetLineAtPosition(long pos, bool caretPosition = false) const;
 915
 916     /// Get the line at the given y pixel position, or the last line.
 917     virtual wxRichTextLine* GetLineAtYPosition(int y) const;
 918
 919     /// Get the paragraph at the given character or caret position
 920     virtual wxRichTextParagraph* GetParagraphAtPosition(long pos, bool caretPosition = false) const;
 921
 922     /// Get the line size at the given position
 923     virtual wxSize GetLineSizeAtPosition(long pos, bool caretPosition = false) const;
 924
 925     /// Given a position, get the number of the visible line (potentially many to a paragraph),
 926     /// starting from zero at the start of the buffer. We also have to pass a bool (startOfLine)
 927     /// that indicates whether the caret is being shown at the end of the previous line or at the start
 928     /// of the next, since the caret can be shown at 2 visible positions for the same underlying
 929     /// position.
 930     virtual long GetVisibleLineNumber(long pos, bool caretPosition = false, bool startOfLine = false) const;
 931
 932     /// Given a line number, get the corresponding wxRichTextLine object.
 933     virtual wxRichTextLine* GetLineForVisibleLineNumber(long lineNumber) const;
 934
 935     /// Get the leaf object in a paragraph at this position.
 936     /// Given a line number, get the corresponding wxRichTextLine object.
 937     virtual wxRichTextObject* GetLeafObjectAtPosition(long position) const;
 938
 939     /// Get the paragraph by number
 940     virtual wxRichTextParagraph* GetParagraphAtLine(long paragraphNumber) const;
 941
 942     /// Get the paragraph for a given line
 943     virtual wxRichTextParagraph* GetParagraphForLine(wxRichTextLine* line) const;
 944
 945     /// Get the length of the paragraph
 946     virtual int GetParagraphLength(long paragraphNumber) const;
 947
 948     /// Get the number of paragraphs
 949     virtual int GetParagraphCount() const { return GetChildCount(); }
 950
 951     /// Get the number of visible lines
 952     virtual int GetLineCount() const;
 953
 954     /// Get the text of the paragraph
 955     virtual wxString GetParagraphText(long paragraphNumber) const;
 956
 957     /// Convert zero-based line column and paragraph number to a position.
 958     virtual long XYToPosition(long x, long y) const;
 959
 960     /// Convert zero-based position to line column and paragraph number
 961     virtual bool PositionToXY(long pos, long* x, long* y) const;
 962
 963     /// Set text attributes: character and/or paragraph styles.
 964     virtual bool SetStyle(const wxRichTextRange& range, const wxRichTextAttr& style, int flags = wxRICHTEXT_SETSTYLE_WITH_UNDO);
 965     virtual bool SetStyle(const wxRichTextRange& range, const wxTextAttrEx& style, int flags = wxRICHTEXT_SETSTYLE_WITH_UNDO);
 966
 967     /// Get the conbined text attributes for this position.
 968     virtual bool GetStyle(long position, wxTextAttrEx& style);
 969     virtual bool GetStyle(long position, wxRichTextAttr& style);
 970
 971     /// Get the content (uncombined) attributes for this position.
 972     virtual bool GetUncombinedStyle(long position, wxTextAttrEx& style);
 973     virtual bool GetUncombinedStyle(long position, wxRichTextAttr& style);
 974
 975     /// Implementation helper for GetStyle. If combineStyles is true, combine base, paragraph and
 976     /// context attributes.
 977     virtual bool DoGetStyle(long position, wxTextAttrEx& style, bool combineStyles = true);
 978
 979     /// Get the combined style for a range - if any attribute is different within the range,
 980     /// that attribute is not present within the flags
 981     virtual bool GetStyleForRange(const wxRichTextRange& range, wxTextAttrEx& style);
 982
 983     /// Combines 'style' with 'currentStyle' for the purpose of summarising the attributes of a range of
 984     /// content.
 985     bool CollectStyle(wxTextAttrEx& currentStyle, const wxTextAttrEx& style, long& multipleStyleAttributes);
 986
 987     /// Set list style
 988     virtual bool SetListStyle(const wxRichTextRange& range, wxRichTextListStyleDefinition* def, int flags = wxRICHTEXT_SETSTYLE_WITH_UNDO, int startFrom = 1, int specifiedLevel = -1);
 989     virtual bool SetListStyle(const wxRichTextRange& range, const wxString& defName, int flags = wxRICHTEXT_SETSTYLE_WITH_UNDO, int startFrom = 1, int specifiedLevel = -1);
 990
 991     /// Clear list for given range
 992     virtual bool ClearListStyle(const wxRichTextRange& range, int flags = wxRICHTEXT_SETSTYLE_WITH_UNDO);
 993
 994     /// Number/renumber any list elements in the given range.
 995     /// def/defName can be NULL/empty to indicate that the existing list style should be used.
 996     virtual bool NumberList(const wxRichTextRange& range, wxRichTextListStyleDefinition* def = NULL, int flags = wxRICHTEXT_SETSTYLE_WITH_UNDO, int startFrom = 1, int specifiedLevel = -1);
 997     virtual bool NumberList(const wxRichTextRange& range, const wxString& defName, int flags = wxRICHTEXT_SETSTYLE_WITH_UNDO, int startFrom = 1, int specifiedLevel = -1);
 998
 999     /// Promote the list items within the given range. promoteBy can be a positive or negative number, e.g. 1 or -1
1000     /// def/defName can be NULL/empty to indicate that the existing list style should be used.
1001     virtual bool PromoteList(int promoteBy, const wxRichTextRange& range, wxRichTextListStyleDefinition* def = NULL, int flags = wxRICHTEXT_SETSTYLE_WITH_UNDO, int specifiedLevel = -1);
1002     virtual bool PromoteList(int promoteBy, const wxRichTextRange& range, const wxString& defName, int flags = wxRICHTEXT_SETSTYLE_WITH_UNDO, int specifiedLevel = -1);
1003
1004     /// Helper for NumberList and PromoteList, that does renumbering and promotion simultaneously
1005     /// def/defName can be NULL/empty to indicate that the existing list style should be used.
1006     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);
1007
1008     /// Test if this whole range has character attributes of the specified kind. If any
1009     /// of the attributes are different within the range, the test fails. You
1010     /// can use this to implement, for example, bold button updating. style must have
1011     /// flags indicating which attributes are of interest.
1012     virtual bool HasCharacterAttributes(const wxRichTextRange& range, const wxTextAttrEx& style) const;
1013     virtual bool HasCharacterAttributes(const wxRichTextRange& range, const wxRichTextAttr& style) const;
1014
1015     /// Test if this whole range has paragraph attributes of the specified kind. If any
1016     /// of the attributes are different within the range, the test fails. You
1017     /// can use this to implement, for example, centering button updating. style must have
1018     /// flags indicating which attributes are of interest.
1019     virtual bool HasParagraphAttributes(const wxRichTextRange& range, const wxTextAttrEx& style) const;
1020     virtual bool HasParagraphAttributes(const wxRichTextRange& range, const wxRichTextAttr& style) const;
1021
1022     /// Clone
1023     virtual wxRichTextObject* Clone() const { return new wxRichTextParagraphLayoutBox(*this); }
1024
1025     /// Insert fragment into this box at the given position. If partialParagraph is true,
1026     /// it is assumed that the last (or only) paragraph is just a piece of data with no paragraph
1027     /// marker.
1028     virtual bool InsertFragment(long position, wxRichTextParagraphLayoutBox& fragment);
1029
1030     /// Make a copy of the fragment corresponding to the given range, putting it in 'fragment'.
1031     virtual bool CopyFragment(const wxRichTextRange& range, wxRichTextParagraphLayoutBox& fragment);
1032
1033     /// Apply the style sheet to the buffer, for example if the styles have changed.
1034     virtual bool ApplyStyleSheet(wxRichTextStyleSheet* styleSheet);
1035
1036     /// Copy
1037     void Copy(const wxRichTextParagraphLayoutBox& obj);
1038
1039     /// Assignment
1040     void operator= (const wxRichTextParagraphLayoutBox& obj) { Copy(obj); }
1041
1042     /// Calculate ranges
1043     virtual void UpdateRanges() { long end; CalculateRange(0, end); }
1044
1045     /// Get all the text
1046     virtual wxString GetText() const;
1047
1048     /// Set default style for new content. Setting it to a default attribute
1049     /// makes new content take on the 'basic' style.
1050     virtual bool SetDefaultStyle(const wxTextAttrEx& style);
1051
1052     /// Get default style
1053     virtual const wxTextAttrEx& GetDefaultStyle() const { return m_defaultAttributes; }
1054
1055     /// Set basic (overall) style
1056     virtual void SetBasicStyle(const wxTextAttrEx& style) { m_attributes = style; }
1057     virtual void SetBasicStyle(const wxRichTextAttr& style) { style.CopyTo(m_attributes); }
1058
1059     /// Get basic (overall) style
1060     virtual const wxTextAttrEx& GetBasicStyle() const { return m_attributes; }
1061
1062     /// Invalidate the buffer. With no argument, invalidates whole buffer.
1063     void Invalidate(const wxRichTextRange& invalidRange = wxRICHTEXT_ALL);
1064
1065     /// Get invalid range, rounding to entire paragraphs if argument is true.
1066     wxRichTextRange GetInvalidRange(bool wholeParagraphs = false) const;
1067
1068 protected:
1069     wxRichTextCtrl* m_ctrl;
1070     wxTextAttrEx    m_defaultAttributes;
1071
1072     /// The invalidated range that will need full layout
1073     wxRichTextRange m_invalidRange;
1074
1075     // Is the last paragraph partial or complete?
1076     bool            m_partialParagraph;
1077 };
1078
1079 /*!
1080  * wxRichTextLine class declaration
1081  * This object represents a line in a paragraph, and stores
1082  * offsets from the start of the paragraph representing the
1083  * start and end positions of the line.
1084  */
1085
1086 class WXDLLIMPEXP_RICHTEXT wxRichTextLine
1087 {
1088 public:
1089 // Constructors
1090
1091     wxRichTextLine(wxRichTextParagraph* parent);
1092     wxRichTextLine(const wxRichTextLine& obj) { Init( NULL); Copy(obj); }
1093     virtual ~wxRichTextLine() {}
1094
1095 // Overrideables
1096
1097 // Accessors
1098
1099     /// Set the range
1100     void SetRange(const wxRichTextRange& range) { m_range = range; }
1101     void SetRange(long from, long to) { m_range = wxRichTextRange(from, to); }
1102
1103     /// Get the parent paragraph
1104     wxRichTextParagraph* GetParent() { return m_parent; }
1105
1106     /// Get the range
1107     const wxRichTextRange& GetRange() const { return m_range; }
1108     wxRichTextRange& GetRange() { return m_range; }
1109
1110     /// Get the absolute range
1111     wxRichTextRange GetAbsoluteRange() const;
1112
1113     /// Get/set the line size as calculated by Layout.
1114     virtual wxSize GetSize() const { return m_size; }
1115     virtual void SetSize(const wxSize& sz) { m_size = sz; }
1116
1117     /// Get/set the object position relative to the parent
1118     virtual wxPoint GetPosition() const { return m_pos; }
1119     virtual void SetPosition(const wxPoint& pos) { m_pos = pos; }
1120
1121     /// Get the absolute object position
1122     virtual wxPoint GetAbsolutePosition() const;
1123
1124     /// Get the rectangle enclosing the line
1125     virtual wxRect GetRect() const { return wxRect(GetAbsolutePosition(), GetSize()); }
1126
1127     /// Set/get stored descent
1128     void SetDescent(int descent) { m_descent = descent; }
1129     int GetDescent() const { return m_descent; }
1130
1131 // Operations
1132
1133     /// Initialisation
1134     void Init(wxRichTextParagraph* parent);
1135
1136     /// Copy
1137     void Copy(const wxRichTextLine& obj);
1138
1139     /// Clone
1140     virtual wxRichTextLine* Clone() const { return new wxRichTextLine(*this); }
1141
1142 protected:
1143
1144     /// The range of the line (start position to end position)
1145     /// This is relative to the parent paragraph.
1146     wxRichTextRange     m_range;
1147
1148     /// Size and position measured relative to top of paragraph
1149     wxPoint             m_pos;
1150     wxSize              m_size;
1151
1152     /// Maximum descent for this line (location of text baseline)
1153     int                 m_descent;
1154
1155     // The parent object
1156     wxRichTextParagraph* m_parent;
1157 };
1158
1159 WX_DECLARE_LIST_WITH_DECL( wxRichTextLine, wxRichTextLineList , class WXDLLIMPEXP_RICHTEXT );
1160
1161 /*!
1162  * wxRichTextParagraph class declaration
1163  * This object represents a single paragraph (or in a straight text editor, a line).
1164  */
1165
1166 class WXDLLIMPEXP_RICHTEXT wxRichTextParagraph: public wxRichTextBox
1167 {
1168     DECLARE_DYNAMIC_CLASS(wxRichTextParagraph)
1169 public:
1170 // Constructors
1171
1172     wxRichTextParagraph(wxRichTextObject* parent = NULL, wxTextAttrEx* style = NULL);
1173     wxRichTextParagraph(const wxString& text, wxRichTextObject* parent = NULL, wxTextAttrEx* style = NULL);
1174     virtual ~wxRichTextParagraph();
1175     wxRichTextParagraph(const wxRichTextParagraph& obj): wxRichTextBox() { Copy(obj); }
1176
1177 // Overrideables
1178
1179     /// Draw the item
1180     virtual bool Draw(wxDC& dc, const wxRichTextRange& range, const wxRichTextRange& selectionRange, const wxRect& rect, int descent, int style);
1181
1182     /// Lay the item out
1183     virtual bool Layout(wxDC& dc, const wxRect& rect, int style);
1184
1185     /// Get/set the object size for the given range. Returns false if the range
1186     /// is invalid for this object.
1187     virtual bool GetRangeSize(const wxRichTextRange& range, wxSize& size, int& descent, wxDC& dc, int flags, wxPoint position = wxPoint(0,0)) const;
1188
1189     /// Finds the absolute position and row height for the given character position
1190     virtual bool FindPosition(wxDC& dc, long index, wxPoint& pt, int* height, bool forceLineStart);
1191
1192     /// Hit-testing: returns a flag indicating hit test details, plus
1193     /// information about position
1194     virtual int HitTest(wxDC& dc, const wxPoint& pt, long& textPosition);
1195
1196     /// Calculate range
1197     virtual void CalculateRange(long start, long& end);
1198
1199 // Accessors
1200
1201     /// Get the cached lines
1202     wxRichTextLineList& GetLines() { return m_cachedLines; }
1203
1204 // Operations
1205
1206     /// Copy
1207     void Copy(const wxRichTextParagraph& obj);
1208
1209     /// Clone
1210     virtual wxRichTextObject* Clone() const { return new wxRichTextParagraph(*this); }
1211
1212     /// Clear the cached lines
1213     void ClearLines();
1214
1215 // Implementation
1216
1217     /// Apply paragraph styles such as centering to the wrapped lines
1218     virtual void ApplyParagraphStyle(const wxTextAttrEx& attr, const wxRect& rect);
1219
1220     /// Insert text at the given position
1221     virtual bool InsertText(long pos, const wxString& text);
1222
1223     /// Split an object at this position if necessary, and return
1224     /// the previous object, or NULL if inserting at beginning.
1225     virtual wxRichTextObject* SplitAt(long pos, wxRichTextObject** previousObject = NULL);
1226
1227     /// Move content to a list from this point
1228     virtual void MoveToList(wxRichTextObject* obj, wxList& list);
1229
1230     /// Add content back from list
1231     virtual void MoveFromList(wxList& list);
1232
1233     /// Get the plain text searching from the start or end of the range.
1234     /// The resulting string may be shorter than the range given.
1235     bool GetContiguousPlainText(wxString& text, const wxRichTextRange& range, bool fromStart = true);
1236
1237     /// Find a suitable wrap position. wrapPosition is the last position in the line to the left
1238     /// of the split.
1239     bool FindWrapPosition(const wxRichTextRange& range, wxDC& dc, int availableSpace, long& wrapPosition);
1240
1241     /// Find the object at the given position
1242     wxRichTextObject* FindObjectAtPosition(long position);
1243
1244     /// Get the bullet text for this paragraph.
1245     wxString GetBulletText();
1246
1247     /// Allocate or reuse a line object
1248     wxRichTextLine* AllocateLine(int pos);
1249
1250     /// Clear remaining unused line objects, if any
1251     bool ClearUnusedLines(int lineCount);
1252
1253     /// Get combined attributes of the base style, paragraph style and character style. We use this to dynamically
1254     /// retrieve the actual style.
1255     wxTextAttrEx GetCombinedAttributes(const wxTextAttrEx& contentStyle) const;
1256
1257     /// Get combined attributes of the base style and paragraph style.
1258     wxTextAttrEx GetCombinedAttributes() const;
1259
1260     /// Create default tabstop array
1261     static void InitDefaultTabs();
1262
1263     /// Clear default tabstop array
1264     static void ClearDefaultTabs();
1265
1266     /// Get default tabstop array
1267     static const wxArrayInt& GetDefaultTabs() { return sm_defaultTabs; }
1268
1269 protected:
1270     /// The lines that make up the wrapped paragraph
1271     wxRichTextLineList m_cachedLines;
1272
1273     /// Default tabstops
1274     static wxArrayInt  sm_defaultTabs;
1275 };
1276
1277 /*!
1278  * wxRichTextPlainText class declaration
1279  * This object represents a single piece of text.
1280  */
1281
1282 class WXDLLIMPEXP_RICHTEXT wxRichTextPlainText: public wxRichTextObject
1283 {
1284     DECLARE_DYNAMIC_CLASS(wxRichTextPlainText)
1285 public:
1286 // Constructors
1287
1288     wxRichTextPlainText(const wxString& text = wxEmptyString, wxRichTextObject* parent = NULL, wxTextAttrEx* style = NULL);
1289     wxRichTextPlainText(const wxRichTextPlainText& obj): wxRichTextObject() { Copy(obj); }
1290
1291 // Overrideables
1292
1293     /// Draw the item
1294     virtual bool Draw(wxDC& dc, const wxRichTextRange& range, const wxRichTextRange& selectionRange, const wxRect& rect, int descent, int style);
1295
1296     /// Lay the item out
1297     virtual bool Layout(wxDC& dc, const wxRect& rect, int style);
1298
1299     /// Get/set the object size for the given range. Returns false if the range
1300     /// is invalid for this object.
1301     virtual bool GetRangeSize(const wxRichTextRange& range, wxSize& size, int& descent, wxDC& dc, int flags, wxPoint position/* = wxPoint(0,0)*/) const;
1302
1303     /// Get any text in this object for the given range
1304     virtual wxString GetTextForRange(const wxRichTextRange& range) const;
1305
1306     /// Do a split, returning an object containing the second part, and setting
1307     /// the first part in 'this'.
1308     virtual wxRichTextObject* DoSplit(long pos);
1309
1310     /// Calculate range
1311     virtual void CalculateRange(long start, long& end);
1312
1313     /// Delete range
1314     virtual bool DeleteRange(const wxRichTextRange& range);
1315
1316     /// Returns true if the object is empty
1317     virtual bool IsEmpty() const { return m_text.empty(); }
1318
1319     /// Returns true if this object can merge itself with the given one.
1320     virtual bool CanMerge(wxRichTextObject* object) const;
1321
1322     /// Returns true if this object merged itself with the given one.
1323     /// The calling code will then delete the given object.
1324     virtual bool Merge(wxRichTextObject* object);
1325
1326     /// Dump to output stream for debugging
1327     virtual void Dump(wxTextOutputStream& stream);
1328
1329 // Accessors
1330
1331     /// Get the text
1332     const wxString& GetText() const { return m_text; }
1333
1334     /// Set the text
1335     void SetText(const wxString& text) { m_text = text; }
1336
1337 // Operations
1338
1339     /// Copy
1340     void Copy(const wxRichTextPlainText& obj);
1341
1342     /// Clone
1343     virtual wxRichTextObject* Clone() const { return new wxRichTextPlainText(*this); }
1344 private:
1345     bool DrawTabbedString(wxDC& dc, const wxTextAttrEx& attr, const wxRect& rect, wxString& str, wxCoord& x, wxCoord& y, bool selected);
1346
1347 protected:
1348     wxString    m_text;
1349 };
1350
1351 /*!
1352  * wxRichTextImageBlock stores information about an image, in binary in-memory form
1353  */
1354
1355 class WXDLLIMPEXP_BASE wxDataInputStream;
1356 class WXDLLIMPEXP_BASE wxDataOutputStream;
1357
1358 class WXDLLIMPEXP_RICHTEXT wxRichTextImageBlock: public wxObject
1359 {
1360 public:
1361     wxRichTextImageBlock();
1362     wxRichTextImageBlock(const wxRichTextImageBlock& block);
1363     virtual ~wxRichTextImageBlock();
1364
1365     void Init();
1366     void Clear();
1367
1368     // Load the original image into a memory block.
1369     // If the image is not a JPEG, we must convert it into a JPEG
1370     // to conserve space.
1371     // If it's not a JPEG we can make use of 'image', already scaled, so we don't have to
1372     // load the image a 2nd time.
1373     virtual bool MakeImageBlock(const wxString& filename, int imageType, wxImage& image, bool convertToJPEG = true);
1374
1375     // Make an image block from the wxImage in the given
1376     // format.
1377     virtual bool MakeImageBlock(wxImage& image, int imageType, int quality = 80);
1378
1379     // Write to a file
1380     bool Write(const wxString& filename);
1381
1382     // Write data in hex to a stream
1383     bool WriteHex(wxOutputStream& stream);
1384
1385     // Read data in hex from a stream
1386     bool ReadHex(wxInputStream& stream, int length, int imageType);
1387
1388     // Copy from 'block'
1389     void Copy(const wxRichTextImageBlock& block);
1390
1391     // Load a wxImage from the block
1392     bool Load(wxImage& image);
1393
1394 //// Operators
1395     void operator=(const wxRichTextImageBlock& block);
1396
1397 //// Accessors
1398
1399     unsigned char* GetData() const { return m_data; }
1400     size_t GetDataSize() const { return m_dataSize; }
1401     int GetImageType() const { return m_imageType; }
1402
1403     void SetData(unsigned char* image) { m_data = image; }
1404     void SetDataSize(size_t size) { m_dataSize = size; }
1405     void SetImageType(int imageType) { m_imageType = imageType; }
1406
1407     bool Ok() const { return IsOk(); }
1408     bool IsOk() const { return GetData() != NULL; }
1409
1410 /// Implementation
1411
1412     /// Allocate and read from stream as a block of memory
1413     static unsigned char* ReadBlock(wxInputStream& stream, size_t size);
1414     static unsigned char* ReadBlock(const wxString& filename, size_t size);
1415
1416     // Write memory block to stream
1417     static bool WriteBlock(wxOutputStream& stream, unsigned char* block, size_t size);
1418
1419     // Write memory block to file
1420     static bool WriteBlock(const wxString& filename, unsigned char* block, size_t size);
1421
1422 protected:
1423     // Size in bytes of the image stored.
1424     // This is in the raw, original form such as a JPEG file.
1425     unsigned char*      m_data;
1426     size_t              m_dataSize;
1427     int                 m_imageType; // wxWin type id
1428 };
1429
1430
1431 /*!
1432  * wxRichTextImage class declaration
1433  * This object represents an image.
1434  */
1435
1436 class WXDLLIMPEXP_RICHTEXT wxRichTextImage: public wxRichTextObject
1437 {
1438     DECLARE_DYNAMIC_CLASS(wxRichTextImage)
1439 public:
1440 // Constructors
1441
1442     wxRichTextImage(wxRichTextObject* parent = NULL): wxRichTextObject(parent) { }
1443     wxRichTextImage(const wxImage& image, wxRichTextObject* parent = NULL);
1444     wxRichTextImage(const wxRichTextImageBlock& imageBlock, wxRichTextObject* parent = NULL);
1445     wxRichTextImage(const wxRichTextImage& obj): wxRichTextObject() { Copy(obj); }
1446
1447 // Overrideables
1448
1449     /// Draw the item
1450     virtual bool Draw(wxDC& dc, const wxRichTextRange& range, const wxRichTextRange& selectionRange, const wxRect& rect, int descent, int style);
1451
1452     /// Lay the item out
1453     virtual bool Layout(wxDC& dc, const wxRect& rect, int style);
1454
1455     /// Get the object size for the given range. Returns false if the range
1456     /// is invalid for this object.
1457     virtual bool GetRangeSize(const wxRichTextRange& range, wxSize& size, int& descent, wxDC& dc, int flags, wxPoint position = wxPoint(0,0)) const;
1458
1459     /// Returns true if the object is empty
1460     virtual bool IsEmpty() const { return !m_image.Ok(); }
1461
1462 // Accessors
1463
1464     /// Get the image
1465     const wxImage& GetImage() const { return m_image; }
1466
1467     /// Set the image
1468     void SetImage(const wxImage& image) { m_image = image; }
1469
1470     /// Get the image block containing the raw data
1471     wxRichTextImageBlock& GetImageBlock() { return m_imageBlock; }
1472
1473 // Operations
1474
1475     /// Copy
1476     void Copy(const wxRichTextImage& obj);
1477
1478     /// Clone
1479     virtual wxRichTextObject* Clone() const { return new wxRichTextImage(*this); }
1480
1481     /// Load wxImage from the block
1482     virtual bool LoadFromBlock();
1483
1484     /// Make block from the wxImage
1485     virtual bool MakeBlock();
1486
1487 protected:
1488     // TODO: reduce the multiple representations of data
1489     wxImage                 m_image;
1490     wxBitmap                m_bitmap;
1491     wxRichTextImageBlock    m_imageBlock;
1492 };
1493
1494
1495 /*!
1496  * wxRichTextBuffer class declaration
1497  * This is a kind of box, used to represent the whole buffer
1498  */
1499
1500 class WXDLLIMPEXP_RICHTEXT wxRichTextCommand;
1501 class WXDLLIMPEXP_RICHTEXT wxRichTextAction;
1502
1503 class WXDLLIMPEXP_RICHTEXT wxRichTextBuffer: public wxRichTextParagraphLayoutBox
1504 {
1505     DECLARE_DYNAMIC_CLASS(wxRichTextBuffer)
1506 public:
1507 // Constructors
1508
1509     wxRichTextBuffer() { Init(); }
1510     wxRichTextBuffer(const wxRichTextBuffer& obj): wxRichTextParagraphLayoutBox() { Init(); Copy(obj); }
1511     virtual ~wxRichTextBuffer() ;
1512
1513 // Accessors
1514
1515     /// Gets the command processor
1516     wxCommandProcessor* GetCommandProcessor() const { return m_commandProcessor; }
1517
1518     /// Set style sheet, if any.
1519     void SetStyleSheet(wxRichTextStyleSheet* styleSheet) { m_styleSheet = styleSheet; }
1520     virtual wxRichTextStyleSheet* GetStyleSheet() const { return m_styleSheet; }
1521
1522     /// Push style sheet to top of stack
1523     bool PushStyleSheet(wxRichTextStyleSheet* styleSheet);
1524
1525     /// Pop style sheet from top of stack
1526     wxRichTextStyleSheet* PopStyleSheet();
1527
1528 // Operations
1529
1530     /// Initialisation
1531     void Init();
1532
1533     /// Clears the buffer and resets the command processor
1534     virtual void Clear();
1535
1536     /// The same as Clear, and adds an empty paragraph.
1537     virtual void Reset();
1538
1539     /// Load a file
1540     virtual bool LoadFile(const wxString& filename, int type = wxRICHTEXT_TYPE_ANY);
1541
1542     /// Save a file
1543     virtual bool SaveFile(const wxString& filename, int type = wxRICHTEXT_TYPE_ANY);
1544
1545     /// Load from a stream
1546     virtual bool LoadFile(wxInputStream& stream, int type = wxRICHTEXT_TYPE_ANY);
1547
1548     /// Save to a stream
1549     virtual bool SaveFile(wxOutputStream& stream, int type = wxRICHTEXT_TYPE_ANY);
1550
1551     /// Convenience function to add a paragraph of text
1552     virtual wxRichTextRange AddParagraph(const wxString& text, wxTextAttrEx* paraStyle = NULL) { Modify(); return wxRichTextParagraphLayoutBox::AddParagraph(text, paraStyle); }
1553
1554     /// Begin collapsing undo/redo commands. Note that this may not work properly
1555     /// if combining commands that delete or insert content, changing ranges for
1556     /// subsequent actions.
1557     virtual bool BeginBatchUndo(const wxString& cmdName);
1558
1559     /// End collapsing undo/redo commands
1560     virtual bool EndBatchUndo();
1561
1562     /// Collapsing commands?
1563     virtual bool BatchingUndo() const { return m_batchedCommandDepth > 0; }
1564
1565     /// Submit immediately, or delay according to whether collapsing is on
1566     virtual bool SubmitAction(wxRichTextAction* action);
1567
1568     /// Get collapsed command
1569     virtual wxRichTextCommand* GetBatchedCommand() const { return m_batchedCommand; }
1570
1571     /// Begin suppressing undo/redo commands. The way undo is suppressed may be implemented
1572     /// differently by each command. If not dealt with by a command implementation, then
1573     /// it will be implemented automatically by not storing the command in the undo history
1574     /// when the action is submitted to the command processor.
1575     virtual bool BeginSuppressUndo();
1576
1577     /// End suppressing undo/redo commands.
1578     virtual bool EndSuppressUndo();
1579
1580     /// Collapsing commands?
1581     virtual bool SuppressingUndo() const { return m_suppressUndo > 0; }
1582
1583     /// Copy the range to the clipboard
1584     virtual bool CopyToClipboard(const wxRichTextRange& range);
1585
1586     /// Paste the clipboard content to the buffer
1587     virtual bool PasteFromClipboard(long position);
1588
1589     /// Can we paste from the clipboard?
1590     virtual bool CanPasteFromClipboard() const;
1591
1592     /// Begin using a style
1593     virtual bool BeginStyle(const wxTextAttrEx& style);
1594
1595     /// End the style
1596     virtual bool EndStyle();
1597
1598     /// End all styles
1599     virtual bool EndAllStyles();
1600
1601     /// Clear the style stack
1602     virtual void ClearStyleStack();
1603
1604     /// Get the size of the style stack, for example to check correct nesting
1605     virtual size_t GetStyleStackSize() const { return m_attributeStack.GetCount(); }
1606
1607     /// Begin using bold
1608     bool BeginBold();
1609
1610     /// End using bold
1611     bool EndBold() { return EndStyle(); }
1612
1613     /// Begin using italic
1614     bool BeginItalic();
1615
1616     /// End using italic
1617     bool EndItalic() { return EndStyle(); }
1618
1619     /// Begin using underline
1620     bool BeginUnderline();
1621
1622     /// End using underline
1623     bool EndUnderline() { return EndStyle(); }
1624
1625     /// Begin using point size
1626     bool BeginFontSize(int pointSize);
1627
1628     /// End using point size
1629     bool EndFontSize() { return EndStyle(); }
1630
1631     /// Begin using this font
1632     bool BeginFont(const wxFont& font);
1633
1634     /// End using a font
1635     bool EndFont() { return EndStyle(); }
1636
1637     /// Begin using this colour
1638     bool BeginTextColour(const wxColour& colour);
1639
1640     /// End using a colour
1641     bool EndTextColour() { return EndStyle(); }
1642
1643     /// Begin using alignment
1644     bool BeginAlignment(wxTextAttrAlignment alignment);
1645
1646     /// End alignment
1647     bool EndAlignment() { return EndStyle(); }
1648
1649     /// Begin left indent
1650     bool BeginLeftIndent(int leftIndent, int leftSubIndent = 0);
1651
1652     /// End left indent
1653     bool EndLeftIndent() { return EndStyle(); }
1654
1655     /// Begin right indent
1656     bool BeginRightIndent(int rightIndent);
1657
1658     /// End right indent
1659     bool EndRightIndent() { return EndStyle(); }
1660
1661     /// Begin paragraph spacing
1662     bool BeginParagraphSpacing(int before, int after);
1663
1664     /// End paragraph spacing
1665     bool EndParagraphSpacing() { return EndStyle(); }
1666
1667     /// Begin line spacing
1668     bool BeginLineSpacing(int lineSpacing);
1669
1670     /// End line spacing
1671     bool EndLineSpacing() { return EndStyle(); }
1672
1673     /// Begin numbered bullet
1674     bool BeginNumberedBullet(int bulletNumber, int leftIndent, int leftSubIndent, int bulletStyle = wxTEXT_ATTR_BULLET_STYLE_ARABIC|wxTEXT_ATTR_BULLET_STYLE_PERIOD);
1675
1676     /// End numbered bullet
1677     bool EndNumberedBullet() { return EndStyle(); }
1678
1679     /// Begin symbol bullet
1680     bool BeginSymbolBullet(wxChar symbol, int leftIndent, int leftSubIndent, int bulletStyle = wxTEXT_ATTR_BULLET_STYLE_SYMBOL);
1681
1682     /// End symbol bullet
1683     bool EndSymbolBullet() { return EndStyle(); }
1684
1685     /// Begin named character style
1686     bool BeginCharacterStyle(const wxString& characterStyle);
1687
1688     /// End named character style
1689     bool EndCharacterStyle() { return EndStyle(); }
1690
1691     /// Begin named paragraph style
1692     bool BeginParagraphStyle(const wxString& paragraphStyle);
1693
1694     /// End named character style
1695     bool EndParagraphStyle() { return EndStyle(); }
1696
1697 // Implementation
1698
1699     /// Copy
1700     void Copy(const wxRichTextBuffer& obj);
1701
1702     /// Clone
1703     virtual wxRichTextObject* Clone() const { return new wxRichTextBuffer(*this); }
1704
1705     /// Submit command to insert paragraphs
1706     bool InsertParagraphsWithUndo(long pos, const wxRichTextParagraphLayoutBox& paragraphs, wxRichTextCtrl* ctrl, int flags = 0);
1707
1708     /// Submit command to insert the given text
1709     bool InsertTextWithUndo(long pos, const wxString& text, wxRichTextCtrl* ctrl, int flags = 0);
1710
1711     /// Submit command to insert a newline
1712     bool InsertNewlineWithUndo(long pos, wxRichTextCtrl* ctrl, int flags = 0);
1713
1714     /// Submit command to insert the given image
1715     bool InsertImageWithUndo(long pos, const wxRichTextImageBlock& imageBlock, wxRichTextCtrl* ctrl, int flags = 0);
1716
1717     /// Submit command to delete this range
1718     bool DeleteRangeWithUndo(const wxRichTextRange& range, long initialCaretPosition, long newCaretPositon, wxRichTextCtrl* ctrl);
1719
1720     /// Mark modified
1721     void Modify(bool modify = true) { m_modified = modify; }
1722     bool IsModified() const { return m_modified; }
1723
1724     /// Get the style that is appropriate for a new paragraph at this position.
1725     /// If the previous paragraph has a paragraph style name, look up the next-paragraph
1726     /// style.
1727     wxRichTextAttr GetStyleForNewParagraph(long pos, bool caretPosition = false) const;
1728
1729     /// Dumps contents of buffer for debugging purposes
1730     virtual void Dump();
1731     virtual void Dump(wxTextOutputStream& stream) { wxRichTextParagraphLayoutBox::Dump(stream); }
1732
1733     /// Returns the file handlers
1734     static wxList& GetHandlers() { return sm_handlers; }
1735
1736     /// Adds a handler to the end
1737     static void AddHandler(wxRichTextFileHandler *handler);
1738
1739     /// Inserts a handler at the front
1740     static void InsertHandler(wxRichTextFileHandler *handler);
1741
1742     /// Removes a handler
1743     static bool RemoveHandler(const wxString& name);
1744
1745     /// Finds a handler by name
1746     static wxRichTextFileHandler *FindHandler(const wxString& name);
1747
1748     /// Finds a handler by extension and type
1749     static wxRichTextFileHandler *FindHandler(const wxString& extension, int imageType);
1750
1751     /// Finds a handler by filename or, if supplied, type
1752     static wxRichTextFileHandler *FindHandlerFilenameOrType(const wxString& filename, int imageType);
1753
1754     /// Finds a handler by type
1755     static wxRichTextFileHandler *FindHandler(int imageType);
1756
1757     /// Gets a wildcard incorporating all visible handlers. If 'types' is present,
1758     /// will be filled with the file type corresponding to each filter. This can be
1759     /// used to determine the type to pass to LoadFile given a selected filter.
1760     static wxString GetExtWildcard(bool combine = false, bool save = false, wxArrayInt* types = NULL);
1761
1762     /// Clean up handlers
1763     static void CleanUpHandlers();
1764
1765     /// Initialise the standard handlers
1766     static void InitStandardHandlers();
1767
1768 protected:
1769
1770     /// Command processor
1771     wxCommandProcessor*     m_commandProcessor;
1772
1773     /// Has been modified?
1774     bool                    m_modified;
1775
1776     /// Collapsed command stack
1777     int                     m_batchedCommandDepth;
1778
1779     /// Name for collapsed command
1780     wxString                m_batchedCommandsName;
1781
1782     /// Current collapsed command accumulating actions
1783     wxRichTextCommand*      m_batchedCommand;
1784
1785     /// Whether to suppress undo
1786     int                     m_suppressUndo;
1787
1788     /// Style sheet, if any
1789     wxRichTextStyleSheet*   m_styleSheet;
1790
1791     /// Stack of attributes for convenience functions
1792     wxList                  m_attributeStack;
1793
1794     /// File handlers
1795     static wxList           sm_handlers;
1796 };
1797
1798 /*!
1799  * The command identifiers
1800  *
1801  */
1802
1803 enum wxRichTextCommandId
1804 {
1805     wxRICHTEXT_INSERT,
1806     wxRICHTEXT_DELETE,
1807     wxRICHTEXT_CHANGE_STYLE
1808 };
1809
1810 /*!
1811  * Command classes for undo/redo
1812  *
1813  */
1814
1815 class WXDLLIMPEXP_RICHTEXT wxRichTextAction;
1816 class WXDLLIMPEXP_RICHTEXT wxRichTextCommand: public wxCommand
1817 {
1818 public:
1819     // Ctor for one action
1820     wxRichTextCommand(const wxString& name, wxRichTextCommandId id, wxRichTextBuffer* buffer,
1821         wxRichTextCtrl* ctrl, bool ignoreFirstTime = false);
1822
1823     // Ctor for multiple actions
1824     wxRichTextCommand(const wxString& name);
1825
1826     virtual ~wxRichTextCommand();
1827
1828     bool Do();
1829     bool Undo();
1830
1831     void AddAction(wxRichTextAction* action);
1832     void ClearActions();
1833
1834     wxList& GetActions() { return m_actions; }
1835
1836 protected:
1837
1838     wxList  m_actions;
1839 };
1840
1841 /*!
1842  * wxRichTextAction class declaration
1843  * There can be more than one action in a command.
1844  */
1845
1846 class WXDLLIMPEXP_RICHTEXT wxRichTextAction: public wxObject
1847 {
1848 public:
1849     wxRichTextAction(wxRichTextCommand* cmd, const wxString& name, wxRichTextCommandId id, wxRichTextBuffer* buffer,
1850         wxRichTextCtrl* ctrl, bool ignoreFirstTime = false);
1851
1852     virtual ~wxRichTextAction();
1853
1854     bool Do();
1855     bool Undo();
1856
1857     /// Update the control appearance
1858     void UpdateAppearance(long caretPosition, bool sendUpdateEvent = false);
1859
1860     /// Replace the buffer paragraphs with the given fragment.
1861     void ApplyParagraphs(const wxRichTextParagraphLayoutBox& fragment);
1862
1863     /// Get the fragments
1864     wxRichTextParagraphLayoutBox& GetNewParagraphs() { return m_newParagraphs; }
1865     wxRichTextParagraphLayoutBox& GetOldParagraphs() { return m_oldParagraphs; }
1866
1867     /// Set/get the position used for e.g. insertion
1868     void SetPosition(long pos) { m_position = pos; }
1869     long GetPosition() const { return m_position; }
1870
1871     /// Set/get the range for e.g. deletion
1872     void SetRange(const wxRichTextRange& range) { m_range = range; }
1873     const wxRichTextRange& GetRange() const { return m_range; }
1874
1875     /// Get name
1876     const wxString& GetName() const { return m_name; }
1877
1878 protected:
1879     // Action name
1880     wxString                        m_name;
1881
1882     // Buffer
1883     wxRichTextBuffer*               m_buffer;
1884
1885     // Control
1886     wxRichTextCtrl*                 m_ctrl;
1887
1888     // Stores the new paragraphs
1889     wxRichTextParagraphLayoutBox    m_newParagraphs;
1890
1891     // Stores the old paragraphs
1892     wxRichTextParagraphLayoutBox    m_oldParagraphs;
1893
1894     // The affected range
1895     wxRichTextRange                 m_range;
1896
1897     // The insertion point for this command
1898     long                            m_position;
1899
1900     // Ignore 1st 'Do' operation because we already did it
1901     bool                            m_ignoreThis;
1902
1903     // The command identifier
1904     wxRichTextCommandId             m_cmdId;
1905 };
1906
1907 /*!
1908  * wxRichTextFileHandler
1909  * Base class for file handlers
1910  */
1911
1912 class WXDLLIMPEXP_RICHTEXT wxRichTextFileHandler: public wxObject
1913 {
1914     DECLARE_CLASS(wxRichTextFileHandler)
1915 public:
1916     wxRichTextFileHandler(const wxString& name = wxEmptyString, const wxString& ext = wxEmptyString, int type = 0)
1917         : m_name(name), m_extension(ext), m_type(type), m_visible(true)
1918         { }
1919
1920 #if wxUSE_STREAMS
1921     bool LoadFile(wxRichTextBuffer *buffer, wxInputStream& stream)
1922     { return DoLoadFile(buffer, stream); }
1923     bool SaveFile(wxRichTextBuffer *buffer, wxOutputStream& stream)
1924     { return DoSaveFile(buffer, stream); }
1925 #endif
1926
1927     bool LoadFile(wxRichTextBuffer *buffer, const wxString& filename);
1928     bool SaveFile(wxRichTextBuffer *buffer, const wxString& filename);
1929
1930     /// Can we handle this filename (if using files)? By default, checks the extension.
1931     virtual bool CanHandle(const wxString& filename) const;
1932
1933     /// Can we save using this handler?
1934     virtual bool CanSave() const { return false; }
1935
1936     /// Can we load using this handler?
1937     virtual bool CanLoad() const { return false; }
1938
1939     /// Should this handler be visible to the user?
1940     virtual bool IsVisible() const { return m_visible; }
1941     virtual void SetVisible(bool visible) { m_visible = visible; }
1942
1943     /// The name of the nandler
1944     void SetName(const wxString& name) { m_name = name; }
1945     wxString GetName() const { return m_name; }
1946
1947     /// The default extension to recognise
1948     void SetExtension(const wxString& ext) { m_extension = ext; }
1949     wxString GetExtension() const { return m_extension; }
1950
1951     /// The handler type
1952     void SetType(int type) { m_type = type; }
1953     int GetType() const { return m_type; }
1954
1955     /// Encoding to use when saving a file. If empty, a suitable encoding is chosen
1956     void SetEncoding(const wxString& encoding) { m_encoding = encoding; }
1957     const wxString& GetEncoding() const { return m_encoding; }
1958
1959 protected:
1960
1961 #if wxUSE_STREAMS
1962     virtual bool DoLoadFile(wxRichTextBuffer *buffer, wxInputStream& stream) = 0;
1963     virtual bool DoSaveFile(wxRichTextBuffer *buffer, wxOutputStream& stream) = 0;
1964 #endif
1965
1966     wxString  m_name;
1967     wxString  m_encoding;
1968     wxString  m_extension;
1969     int       m_type;
1970     bool      m_visible;
1971 };
1972
1973 /*!
1974  * wxRichTextPlainTextHandler
1975  * Plain text handler
1976  */
1977
1978 class WXDLLIMPEXP_RICHTEXT wxRichTextPlainTextHandler: public wxRichTextFileHandler
1979 {
1980     DECLARE_CLASS(wxRichTextPlainTextHandler)
1981 public:
1982     wxRichTextPlainTextHandler(const wxString& name = wxT("Text"), const wxString& ext = wxT("txt"), int type = wxRICHTEXT_TYPE_TEXT)
1983         : wxRichTextFileHandler(name, ext, type)
1984         { }
1985
1986     /// Can we save using this handler?
1987     virtual bool CanSave() const { return true; }
1988
1989     /// Can we load using this handler?
1990     virtual bool CanLoad() const { return true; }
1991
1992 protected:
1993
1994 #if wxUSE_STREAMS
1995     virtual bool DoLoadFile(wxRichTextBuffer *buffer, wxInputStream& stream);
1996     virtual bool DoSaveFile(wxRichTextBuffer *buffer, wxOutputStream& stream);
1997 #endif
1998
1999 };
2000
2001 #if wxUSE_DATAOBJ
2002
2003 /*!
2004  * The data object for a wxRichTextBuffer
2005  */
2006
2007 class wxRichTextBufferDataObject: public wxDataObjectSimple
2008 {
2009 public:
2010     // ctor doesn't copy the pointer, so it shouldn't go away while this object
2011     // is alive
2012     wxRichTextBufferDataObject(wxRichTextBuffer* richTextBuffer = (wxRichTextBuffer*) NULL);
2013     virtual ~wxRichTextBufferDataObject();
2014
2015     // after a call to this function, the buffer is owned by the caller and it
2016     // is responsible for deleting it
2017     wxRichTextBuffer* GetRichTextBuffer();
2018
2019     // Returns the id for the new data format
2020     static const wxChar* GetRichTextBufferFormatId() { return ms_richTextBufferFormatId; }
2021
2022     // base class pure virtuals
2023
2024     virtual wxDataFormat GetPreferredFormat(Direction dir) const;
2025     virtual size_t GetDataSize() const;
2026     virtual bool GetDataHere(void *pBuf) const;
2027     virtual bool SetData(size_t len, const void *buf);
2028
2029     // prevent warnings
2030
2031     virtual size_t GetDataSize(const wxDataFormat&) const { return GetDataSize(); }
2032     virtual bool GetDataHere(const wxDataFormat&, void *buf) const { return GetDataHere(buf); }
2033     virtual bool SetData(const wxDataFormat&, size_t len, const void *buf) { return SetData(len, buf); }
2034
2035 private:
2036     wxDataFormat            m_formatRichTextBuffer;     // our custom format
2037     wxRichTextBuffer*       m_richTextBuffer;           // our data
2038     static const wxChar*    ms_richTextBufferFormatId;  // our format id
2039 };
2040
2041 #endif
2042
2043 /*!
2044  * Utilities
2045  *
2046  */
2047
2048 inline bool wxRichTextHasStyle(int flags, int style)
2049 {
2050     return ((flags & style) == style);
2051 }
2052
2053 /// Compare two attribute objects
2054 bool wxTextAttrEq(const wxTextAttrEx& attr1, const wxTextAttrEx& attr2);
2055 bool wxTextAttrEq(const wxTextAttr& attr1, const wxRichTextAttr& attr2);
2056
2057 /// Compare two attribute objects, but take into account the flags
2058 /// specifying attributes of interest.
2059 bool wxTextAttrEqPartial(const wxTextAttrEx& attr1, const wxTextAttrEx& attr2, int flags);
2060 bool wxTextAttrEqPartial(const wxTextAttrEx& attr1, const wxRichTextAttr& attr2, int flags);
2061
2062 /// Apply one style to another
2063 bool wxRichTextApplyStyle(wxTextAttrEx& destStyle, const wxTextAttrEx& style);
2064 bool wxRichTextApplyStyle(wxRichTextAttr& destStyle, const wxTextAttrEx& style);
2065 bool wxRichTextApplyStyle(wxTextAttrEx& destStyle, const wxRichTextAttr& style, wxRichTextAttr* compareWith = NULL);
2066
2067 /// Compare tabs
2068 bool wxRichTextTabsEq(const wxArrayInt& tabs1, const wxArrayInt& tabs2);
2069
2070 /// Set the font without changing the font attributes
2071 void wxSetFontPreservingStyles(wxTextAttr& attr, const wxFont& font);
2072
2073 /// Convert a decimal to Roman numerals
2074 wxString wxRichTextDecimalToRoman(long n);
2075
2076
2077 WXDLLIMPEXP_RICHTEXT void wxRichTextModuleInit();
2078
2079 #endif
2080     // wxUSE_RICHTEXT
2081
2082 #endif
2083     // _WX_RICHTEXTBUFFER_H_
2084