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 will be a single box representing the document,
  26   and this box will a wxRichTextParagraphLayoutBox which contains further
  27   wxRichTextParagraph 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   Layout
  38   ======
  39
  40   When Layout is called on an object, it is given a size which the object
  41   must limit itself to, or one or more flexible directions (vertical
  42   or horizontal). So for example a centered paragraph is given the page
  43   width to play with (minus any margins), but can extend indefinitely
  44   in the vertical direction. The implementation of Layout can then
  45   cache the calculated size and position within the parent.
  46
  47   Note that position and size should be calculated separately, because
  48   for example inserting a paragraph may result in the following paragraphs
  49   moving down, but not changing in size.
  50
  51   Need to determine how objects specify their position. Absolute coordinates,
  52   or relative to last object? May be hard to determine that. So should probably
  53   be in absolute coordinates, in which case we'll need a Move virtual function
  54   that allows quick movement of all elements without layout.
  55
  56   Let's work through a simple example of layout. Say we're laying out
  57   a document with the buffer as the top box, with a wxRichTextParagraphLayoutBox
  58   inside that that consists of wxRichTextParagraph objects.
  59
  60   We're in a mode whereby changes of window size change the width of the
  61   page (useful for text editors, as opposed to word processors). The
  62   window width is 600.
  63
  64   We pass (600, -1) to the top-level Layout (i.e. restrict size in horizontal
  65   direction only). The wxRichTextBuffer box doesn't currently have
  66   well-defined layout behaviour so we simply assume it has one child
  67   that fills its parent (later we can define sizer-like box layout behaviour).
  68   So it passes the same dimensions to the child, which is a wxRichTextParagraphLayoutBox.
  69   This then looks at each child in turn (wxRichTextParagraph) and determines
  70   the size the paragraph will take up, setting the cached size, and
  71   splitting the paragraph into lines.
  72
  73   When the layout for one paragraph returns, the next paragraph is
  74   fed the position of the previous, so it can position itself.
  75
  76   Each time Layout is called, the cached list of lines for each paragraph
  77   is recreated, since it can change for example if the parent object width
  78   changes.
  79
  80   Reporting size
  81   ==============
  82
  83   Each object can report its size for a given range. It's important that
  84   it can report a partial size, so that wrapping can be implemented,
  85   hit test calculations performed, etc. So GetRangeSize must be implemented
  86   for each object.
  87
  88  */
  89
  90 /*!
  91  * Includes
  92  */
  93
  94 #include "wx/defs.h"
  95
  96 #if wxUSE_RICHTEXT
  97
  98 #include "wx/list.h"
  99 #include "wx/textctrl.h"
 100 #include "wx/bitmap.h"
 101 #include "wx/image.h"
 102 #include "wx/cmdproc.h"
 103 #include "wx/txtstrm.h"
 104
 105 /*!
 106  * File types
 107  */
 108
 109 #define wxRICHTEXT_TYPE_ANY             0
 110 #define wxRICHTEXT_TYPE_TEXT            1
 111 #define wxRICHTEXT_TYPE_XML             2
 112 #define wxRICHTEXT_TYPE_HTML            3
 113 #define wxRICHTEXT_TYPE_RTF             4
 114 #define wxRICHTEXT_TYPE_PDF             5
 115
 116 /*!
 117  * Forward declarations
 118  */
 119
 120 class WXDLLIMPEXP_RICHTEXT wxRichTextCtrl;
 121 class WXDLLIMPEXP_RICHTEXT wxRichTextObject;
 122 class WXDLLIMPEXP_RICHTEXT wxRichTextCacheObject;
 123 class WXDLLIMPEXP_RICHTEXT wxRichTextObjectList;
 124 class WXDLLIMPEXP_RICHTEXT wxRichTextLine;
 125 class WXDLLIMPEXP_RICHTEXT wxRichTextParagraph;
 126 class WXDLLIMPEXP_RICHTEXT wxRichTextFragment;
 127 class WXDLLIMPEXP_RICHTEXT wxRichTextFileHandler;
 128 class WXDLLIMPEXP_RICHTEXT wxRichTextStyleSheet;
 129 class WXDLLIMPEXP_RICHTEXT wxTextAttrEx;
 130
 131 /*!
 132  * Flags determining the available space, passed to Layout
 133  */
 134
 135 #define wxRICHTEXT_FIXED_WIDTH      0x01
 136 #define wxRICHTEXT_FIXED_HEIGHT     0x02
 137 #define wxRICHTEXT_VARIABLE_WIDTH   0x04
 138 #define wxRICHTEXT_VARIABLE_HEIGHT  0x08
 139
 140 // Only lay out the part of the buffer that lies within
 141 // the rect passed to Layout.
 142 #define wxRICHTEXT_LAYOUT_SPECIFIED_RECT 0x10
 143
 144 /*!
 145  * Flags returned from hit-testing
 146  */
 147
 148 // The point was not on this object
 149 #define wxRICHTEXT_HITTEST_NONE     0x01
 150 // The point was before the position returned from HitTest
 151 #define wxRICHTEXT_HITTEST_BEFORE   0x02
 152 // The point was after the position returned from HitTest
 153 #define wxRICHTEXT_HITTEST_AFTER    0x04
 154 // The point was on the position returned from HitTest
 155 #define wxRICHTEXT_HITTEST_ON       0x08
 156
 157 /*!
 158  * Flags for GetRangeSize
 159  */
 160
 161 #define wxRICHTEXT_FORMATTED        0x01
 162 #define wxRICHTEXT_UNFORMATTED      0x02
 163
 164 /*!
 165  * Extra formatting flags not in wxTextAttr
 166  */
 167
 168 #define wxTEXT_ATTR_PARA_SPACING_AFTER      0x00000800
 169 #define wxTEXT_ATTR_PARA_SPACING_BEFORE     0x00001000
 170 #define wxTEXT_ATTR_LINE_SPACING            0x00002000
 171 #define wxTEXT_ATTR_CHARACTER_STYLE_NAME    0x00004000
 172 #define wxTEXT_ATTR_PARAGRAPH_STYLE_NAME    0x00008000
 173 #define wxTEXT_ATTR_BULLET_STYLE            0x00010000
 174 #define wxTEXT_ATTR_BULLET_NUMBER           0x00020000
 175 #define wxTEXT_ATTR_BULLET_SYMBOL           0x00040000
 176
 177 /*!
 178  * Styles for wxTextAttrEx::SetBulletStyle
 179  */
 180
 181 #define wxTEXT_ATTR_BULLET_STYLE_NONE           0x0000
 182 #define wxTEXT_ATTR_BULLET_STYLE_ARABIC         0x0001
 183 #define wxTEXT_ATTR_BULLET_STYLE_LETTERS_UPPER  0x0002
 184 #define wxTEXT_ATTR_BULLET_STYLE_LETTERS_LOWER  0x0004
 185 #define wxTEXT_ATTR_BULLET_STYLE_ROMAN_UPPER    0x0008
 186 #define wxTEXT_ATTR_BULLET_STYLE_ROMAN_LOWER    0x0010
 187 #define wxTEXT_ATTR_BULLET_STYLE_SYMBOL         0x0020
 188 #define wxTEXT_ATTR_BULLET_STYLE_BITMAP         0x0040
 189 #define wxTEXT_ATTR_BULLET_STYLE_PARENTHESES    0x0080
 190 #define wxTEXT_ATTR_BULLET_STYLE_PERIOD         0x0100
 191
 192 /*!
 193  * Line spacing values
 194  */
 195
 196 #define wxTEXT_ATTR_LINE_SPACING_NORMAL         10
 197 #define wxTEXT_ATTR_LINE_SPACING_HALF           15
 198 #define wxTEXT_ATTR_LINE_SPACING_TWICE          20
 199
 200 /*!
 201  * wxRichTextRange class declaration
 202  * This stores beginning and end positions for a range of data.
 203  */
 204
 205 class WXDLLIMPEXP_RICHTEXT wxRichTextRange
 206 {
 207 public:
 208 // Constructors
 209
 210     wxRichTextRange() { m_start = 0; m_end = 0; }
 211     wxRichTextRange(long start, long end) { m_start = start; m_end = end; }
 212     wxRichTextRange(const wxRichTextRange& range) { m_start = range.m_start; m_end = range.m_end; }
 213     ~wxRichTextRange() {}
 214
 215     void operator =(const wxRichTextRange& range) { m_start = range.m_start; m_end = range.m_end; }
 216     bool operator ==(const wxRichTextRange& range) const { return (m_start == range.m_start && m_end == range.m_end); }
 217     bool operator !=(const wxRichTextRange& range) const { return (m_start != range.m_start && m_end != range.m_end); }
 218     wxRichTextRange operator -(const wxRichTextRange& range) const { return wxRichTextRange(m_start - range.m_start, m_end - range.m_end); }
 219     wxRichTextRange operator +(const wxRichTextRange& range) const { return wxRichTextRange(m_start + range.m_start, m_end + range.m_end); }
 220
 221     void SetRange(long start, long end) { m_start = start; m_end = end; }
 222
 223     void SetStart(long start) { m_start = start; }
 224     long GetStart() const { return m_start; }
 225
 226     void SetEnd(long end) { m_end = end; }
 227     long GetEnd() const { return m_end; }
 228
 229     /// Returns true if this range is completely outside 'range'
 230     bool IsOutside(const wxRichTextRange& range) const { return range.m_start > m_end || range.m_end < m_start; }
 231
 232     /// Returns true if this range is completely within 'range'
 233     bool IsWithin(const wxRichTextRange& range) const { return m_start >= range.m_start && m_end <= range.m_end; }
 234
 235     /// Returns true if the given position is within this range. Allow
 236     /// for the possibility of an empty range - assume the position
 237     /// is within this empty range. NO, I think we should not match with an empty range.
 238     // bool Contains(long pos) const { return pos >= m_start && (pos <= m_end || GetLength() == 0); }
 239     bool Contains(long pos) const { return pos >= m_start && pos <= m_end ; }
 240
 241     /// Limit this range to be within 'range'
 242     bool LimitTo(const wxRichTextRange& range) ;
 243
 244     /// Gets the length of the range
 245     long GetLength() const { return m_end - m_start + 1; }
 246
 247     /// Swaps the start and end
 248     void Swap() { long tmp = m_start; m_start = m_end; m_end = tmp; }
 249
 250     /// Convert to internal form: (n, n) is the range of a single character.
 251     wxRichTextRange ToInternal() const { return wxRichTextRange(m_start, m_end-1); }
 252
 253     /// Convert from internal to public API form: (n, n+1) is the range of a single character.
 254     wxRichTextRange FromInternal() const { return wxRichTextRange(m_start, m_end+1); }
 255
 256 protected:
 257     long m_start;
 258     long m_end;
 259 };
 260
 261 #define wxRICHTEXT_ALL  wxRichTextRange(-2, -2)
 262 #define wxRICHTEXT_NONE  wxRichTextRange(-1, -1)
 263
 264 /*!
 265  * wxTextAttrEx is an extended version of wxTextAttr with more paragraph attributes.
 266  */
 267
 268 class WXDLLIMPEXP_RICHTEXT wxTextAttrEx: public wxTextAttr
 269 {
 270 public:
 271     // ctors
 272     wxTextAttrEx(const wxTextAttrEx& attr);
 273     wxTextAttrEx(const wxTextAttr& attr) { Init(); (*this) = attr; }
 274     wxTextAttrEx() { Init(); }
 275
 276     // Initialise this object.
 277     void Init();
 278
 279     // Assignment from a wxTextAttrEx object
 280     void operator= (const wxTextAttrEx& attr);
 281
 282     // Assignment from a wxTextAttr object.
 283     void operator= (const wxTextAttr& attr);
 284
 285     // setters
 286     void SetCharacterStyleName(const wxString& name) { m_characterStyleName = name; SetFlags(GetFlags() | wxTEXT_ATTR_CHARACTER_STYLE_NAME); }
 287     void SetParagraphStyleName(const wxString& name) { m_paragraphStyleName = name; SetFlags(GetFlags() | wxTEXT_ATTR_PARAGRAPH_STYLE_NAME); }
 288     void SetParagraphSpacingAfter(int spacing) { m_paragraphSpacingAfter = spacing; SetFlags(GetFlags() | wxTEXT_ATTR_PARA_SPACING_AFTER); }
 289     void SetParagraphSpacingBefore(int spacing) { m_paragraphSpacingBefore = spacing; SetFlags(GetFlags() | wxTEXT_ATTR_PARA_SPACING_BEFORE); }
 290     void SetLineSpacing(int spacing) { m_lineSpacing = spacing; SetFlags(GetFlags() | wxTEXT_ATTR_LINE_SPACING); }
 291     void SetBulletStyle(int style) { m_bulletStyle = style; SetFlags(GetFlags() | wxTEXT_ATTR_BULLET_STYLE); }
 292     void SetBulletNumber(int n) { m_bulletNumber = n; SetFlags(GetFlags() | wxTEXT_ATTR_BULLET_NUMBER); }
 293     void SetBulletSymbol(wxChar symbol) { m_bulletSymbol = symbol; SetFlags(GetFlags() | wxTEXT_ATTR_BULLET_SYMBOL); }
 294
 295     const wxString& GetCharacterStyleName() const { return m_characterStyleName; }
 296     const wxString& GetParagraphStyleName() const { return m_paragraphStyleName; }
 297     int GetParagraphSpacingAfter() const { return m_paragraphSpacingAfter; }
 298     int GetParagraphSpacingBefore() const { return m_paragraphSpacingBefore; }
 299     int GetLineSpacing() const { return m_lineSpacing; }
 300     int GetBulletStyle() const { return m_bulletStyle; }
 301     int GetBulletNumber() const { return m_bulletNumber; }
 302     wxChar GetBulletSymbol() const { return m_bulletSymbol; }
 303
 304     bool HasWeight() const { return (GetFlags() & wxTEXT_ATTR_FONT_WEIGHT) != 0; }
 305     bool HasSize() const { return (GetFlags() & wxTEXT_ATTR_FONT_SIZE) != 0; }
 306     bool HasItalic() const { return (GetFlags() & wxTEXT_ATTR_FONT_ITALIC) != 0; }
 307     bool HasUnderlined() const { return (GetFlags() & wxTEXT_ATTR_FONT_UNDERLINE) != 0; }
 308     bool HasFaceName() const { return (GetFlags() & wxTEXT_ATTR_FONT_FACE) != 0; }
 309
 310     bool HasParagraphSpacingAfter() const { return HasFlag(wxTEXT_ATTR_PARA_SPACING_AFTER); }
 311     bool HasParagraphSpacingBefore() const { return HasFlag(wxTEXT_ATTR_PARA_SPACING_BEFORE); }
 312     bool HasLineSpacing() const { return HasFlag(wxTEXT_ATTR_LINE_SPACING); }
 313     bool HasCharacterStyleName() const { return HasFlag(wxTEXT_ATTR_CHARACTER_STYLE_NAME) || !m_characterStyleName.IsEmpty(); }
 314     bool HasParagraphStyleName() const { return HasFlag(wxTEXT_ATTR_PARAGRAPH_STYLE_NAME) || !m_paragraphStyleName.IsEmpty(); }
 315     bool HasBulletStyle() const { return HasFlag(wxTEXT_ATTR_BULLET_STYLE); }
 316     bool HasBulletNumber() const { return HasFlag(wxTEXT_ATTR_BULLET_NUMBER); }
 317     bool HasBulletSymbol() const { return HasFlag(wxTEXT_ATTR_BULLET_SYMBOL); }
 318
 319     // Is this a character style?
 320     bool IsCharacterStyle() const { return (0 != (GetFlags() & (wxTEXT_ATTR_FONT | wxTEXT_ATTR_BACKGROUND_COLOUR | wxTEXT_ATTR_TEXT_COLOUR))); }
 321     bool IsParagraphStyle() const { return (0 != (GetFlags() & (wxTEXT_ATTR_ALIGNMENT|wxTEXT_ATTR_LEFT_INDENT|wxTEXT_ATTR_RIGHT_INDENT|wxTEXT_ATTR_TABS|
 322                             wxTEXT_ATTR_PARA_SPACING_BEFORE|wxTEXT_ATTR_PARA_SPACING_AFTER|wxTEXT_ATTR_LINE_SPACING|
 323                             wxTEXT_ATTR_BULLET_STYLE|wxTEXT_ATTR_BULLET_NUMBER))); }
 324
 325     // returns false if we have any attributes set, true otherwise
 326     bool IsDefault() const
 327     {
 328         return !HasTextColour() && !HasBackgroundColour() && !HasFont() && !HasAlignment() &&
 329                !HasTabs() && !HasLeftIndent() && !HasRightIndent() &&
 330                !HasParagraphSpacingAfter() && !HasParagraphSpacingBefore() && !HasLineSpacing() &&
 331                !HasCharacterStyleName() && !HasParagraphStyleName() && !HasBulletNumber() && !HasBulletStyle() && !HasBulletSymbol();
 332     }
 333
 334     // return the attribute having the valid font and colours: it uses the
 335     // attributes set in attr and falls back first to attrDefault and then to
 336     // the text control font/colours for those attributes which are not set
 337     static wxTextAttrEx CombineEx(const wxTextAttrEx& attr,
 338                               const wxTextAttrEx& attrDef,
 339                               const wxTextCtrlBase *text);
 340
 341 private:
 342     // Paragraph styles
 343     int                 m_paragraphSpacingAfter;
 344     int                 m_paragraphSpacingBefore;
 345     int                 m_lineSpacing;
 346     int                 m_bulletStyle;
 347     int                 m_bulletNumber;
 348     wxChar              m_bulletSymbol;
 349
 350     // Character style
 351     wxString            m_characterStyleName;
 352
 353     // Paragraph style
 354     wxString            m_paragraphStyleName;
 355 };
 356
 357 /*!
 358  * wxRichTextAttr stores attributes without a wxFont object, so is a much more
 359  * efficient way to query styles.
 360  */
 361
 362 class WXDLLIMPEXP_RICHTEXT wxRichTextAttr
 363 {
 364 public:
 365     // ctors
 366     wxRichTextAttr(const wxTextAttrEx& attr);
 367     wxRichTextAttr() { Init(); }
 368     wxRichTextAttr(const wxColour& colText,
 369                const wxColour& colBack = wxNullColour,
 370                wxTextAttrAlignment alignment = wxTEXT_ALIGNMENT_DEFAULT);
 371
 372     // Initialise this object.
 373     void Init();
 374
 375     // Assignment from a wxRichTextAttr object.
 376     void operator= (const wxRichTextAttr& attr);
 377
 378     // Assignment from a wxTextAttrEx object.
 379     void operator= (const wxTextAttrEx& attr);
 380
 381     // Making a wxTextAttrEx object.
 382     operator wxTextAttrEx () const ;
 383
 384     // Copy to a wxTextAttr
 385     void CopyTo(wxTextAttrEx& attr) const;
 386
 387     // Create font from font attributes.
 388     wxFont CreateFont() const;
 389
 390     // Get attributes from font.
 391     bool GetFontAttributes(const wxFont& font);
 392
 393     // setters
 394     void SetTextColour(const wxColour& colText) { m_colText = colText; m_flags |= wxTEXT_ATTR_TEXT_COLOUR; }
 395     void SetBackgroundColour(const wxColour& colBack) { m_colBack = colBack; m_flags |= wxTEXT_ATTR_BACKGROUND_COLOUR; }
 396     void SetAlignment(wxTextAttrAlignment alignment) { m_textAlignment = alignment; m_flags |= wxTEXT_ATTR_ALIGNMENT; }
 397     void SetTabs(const wxArrayInt& tabs) { m_tabs = tabs; m_flags |= wxTEXT_ATTR_TABS; }
 398     void SetLeftIndent(int indent, int subIndent = 0) { m_leftIndent = indent; m_leftSubIndent = subIndent; m_flags |= wxTEXT_ATTR_LEFT_INDENT; }
 399     void SetRightIndent(int indent) { m_rightIndent = indent; m_flags |= wxTEXT_ATTR_RIGHT_INDENT; }
 400
 401     void SetFontSize(int pointSize) { m_fontSize = pointSize; m_flags |= wxTEXT_ATTR_FONT_SIZE; }
 402     void SetFontStyle(int fontStyle) { m_fontStyle = fontStyle; m_flags |= wxTEXT_ATTR_FONT_ITALIC; }
 403     void SetFontWeight(int fontWeight) { m_fontWeight = fontWeight; m_flags |= wxTEXT_ATTR_FONT_WEIGHT; }
 404     void SetFontFaceName(const wxString& faceName) { m_fontFaceName = faceName; m_flags |= wxTEXT_ATTR_FONT_FACE; }
 405     void SetFontUnderlined(bool underlined) { m_fontUnderlined = underlined; m_flags |= wxTEXT_ATTR_FONT_UNDERLINE; }
 406
 407     void SetFlags(long flags) { m_flags = flags; }
 408
 409     void SetCharacterStyleName(const wxString& name) { m_characterStyleName = name; m_flags |= wxTEXT_ATTR_CHARACTER_STYLE_NAME; }
 410     void SetParagraphStyleName(const wxString& name) { m_paragraphStyleName = name; m_flags |= wxTEXT_ATTR_PARAGRAPH_STYLE_NAME; }
 411     void SetParagraphSpacingAfter(int spacing) { m_paragraphSpacingAfter = spacing; m_flags |= wxTEXT_ATTR_PARA_SPACING_AFTER; }
 412     void SetParagraphSpacingBefore(int spacing) { m_paragraphSpacingBefore = spacing; m_flags |= wxTEXT_ATTR_PARA_SPACING_BEFORE; }
 413     void SetLineSpacing(int spacing) { m_lineSpacing = spacing; m_flags |= wxTEXT_ATTR_LINE_SPACING; }
 414     void SetBulletStyle(int style) { m_bulletStyle = style; m_flags |= wxTEXT_ATTR_BULLET_STYLE; }
 415     void SetBulletNumber(int n) { m_bulletNumber = n; m_flags |= wxTEXT_ATTR_BULLET_NUMBER; }
 416     void SetBulletSymbol(wxChar symbol) { m_bulletSymbol = symbol; m_flags |= wxTEXT_ATTR_BULLET_NUMBER; }
 417
 418     const wxColour& GetTextColour() const { return m_colText; }
 419     const wxColour& GetBackgroundColour() const { return m_colBack; }
 420     wxTextAttrAlignment GetAlignment() const { return m_textAlignment; }
 421     const wxArrayInt& GetTabs() const { return m_tabs; }
 422     long GetLeftIndent() const { return m_leftIndent; }
 423     long GetLeftSubIndent() const { return m_leftSubIndent; }
 424     long GetRightIndent() const { return m_rightIndent; }
 425     long GetFlags() const { return m_flags; }
 426
 427     int GetFontSize() const { return m_fontSize; }
 428     int GetFontStyle() const { return m_fontStyle; }
 429     int GetFontWeight() const { return m_fontWeight; }
 430     bool GetFontUnderlined() const { return m_fontUnderlined; }
 431     const wxString& GetFontFaceName() const { return m_fontFaceName; }
 432
 433     const wxString& GetCharacterStyleName() const { return m_characterStyleName; }
 434     const wxString& GetParagraphStyleName() const { return m_paragraphStyleName; }
 435     int GetParagraphSpacingAfter() const { return m_paragraphSpacingAfter; }
 436     int GetParagraphSpacingBefore() const { return m_paragraphSpacingBefore; }
 437     int GetLineSpacing() const { return m_lineSpacing; }
 438     int GetBulletStyle() const { return m_bulletStyle; }
 439     int GetBulletNumber() const { return m_bulletNumber; }
 440     wxChar GetBulletSymbol() const { return m_bulletSymbol; }
 441
 442     // accessors
 443     bool HasTextColour() const { return m_colText.Ok() && HasFlag(wxTEXT_ATTR_TEXT_COLOUR) ; }
 444     bool HasBackgroundColour() const { return m_colBack.Ok() && HasFlag(wxTEXT_ATTR_BACKGROUND_COLOUR) ; }
 445     bool HasAlignment() const { return (m_textAlignment != wxTEXT_ALIGNMENT_DEFAULT) || ((m_flags & wxTEXT_ATTR_ALIGNMENT) != 0) ; }
 446     bool HasTabs() const { return (m_flags & wxTEXT_ATTR_TABS) != 0 ; }
 447     bool HasLeftIndent() const { return (m_flags & wxTEXT_ATTR_LEFT_INDENT) != 0 ; }
 448     bool HasRightIndent() const { return (m_flags & wxTEXT_ATTR_RIGHT_INDENT) != 0 ; }
 449     bool HasWeight() const { return (m_flags & wxTEXT_ATTR_FONT_WEIGHT) != 0; }
 450     bool HasSize() const { return (m_flags & wxTEXT_ATTR_FONT_SIZE) != 0; }
 451     bool HasItalic() const { return (m_flags & wxTEXT_ATTR_FONT_ITALIC) != 0; }
 452     bool HasUnderlined() const { return (m_flags & wxTEXT_ATTR_FONT_UNDERLINE) != 0; }
 453     bool HasFaceName() const { return (m_flags & wxTEXT_ATTR_FONT_FACE) != 0; }
 454     bool HasFont() const { return (m_flags & (wxTEXT_ATTR_FONT)) != 0; }
 455
 456     bool HasParagraphSpacingAfter() const { return (m_flags & wxTEXT_ATTR_PARA_SPACING_AFTER) != 0; }
 457     bool HasParagraphSpacingBefore() const { return (m_flags & wxTEXT_ATTR_PARA_SPACING_BEFORE) != 0; }
 458     bool HasLineSpacing() const { return (m_flags & wxTEXT_ATTR_LINE_SPACING) != 0; }
 459     bool HasCharacterStyleName() const { return (m_flags & wxTEXT_ATTR_CHARACTER_STYLE_NAME) != 0 || !m_characterStyleName.IsEmpty(); }
 460     bool HasParagraphStyleName() const { return (m_flags & wxTEXT_ATTR_PARAGRAPH_STYLE_NAME) != 0 || !m_paragraphStyleName.IsEmpty(); }
 461     bool HasBulletStyle() const { return (m_flags & wxTEXT_ATTR_BULLET_STYLE) != 0; }
 462     bool HasBulletNumber() const { return (m_flags & wxTEXT_ATTR_BULLET_NUMBER) != 0; }
 463     bool HasBulletSymbol() const { return (m_flags & wxTEXT_ATTR_BULLET_SYMBOL) != 0; }
 464
 465     bool HasFlag(long flag) const { return (m_flags & flag) != 0; }
 466
 467     // Is this a character style?
 468     bool IsCharacterStyle() const { return (0 != (GetFlags() & (wxTEXT_ATTR_FONT | wxTEXT_ATTR_BACKGROUND_COLOUR | wxTEXT_ATTR_TEXT_COLOUR))); }
 469     bool IsParagraphStyle() const { return (0 != (GetFlags() & (wxTEXT_ATTR_ALIGNMENT|wxTEXT_ATTR_LEFT_INDENT|wxTEXT_ATTR_RIGHT_INDENT|wxTEXT_ATTR_TABS|
 470                             wxTEXT_ATTR_PARA_SPACING_BEFORE|wxTEXT_ATTR_PARA_SPACING_AFTER|wxTEXT_ATTR_LINE_SPACING|
 471                             wxTEXT_ATTR_BULLET_STYLE|wxTEXT_ATTR_BULLET_NUMBER))); }
 472
 473     // returns false if we have any attributes set, true otherwise
 474     bool IsDefault() const
 475     {
 476         return !HasTextColour() && !HasBackgroundColour() && !HasFont() && !HasAlignment() &&
 477                !HasTabs() && !HasLeftIndent() && !HasRightIndent() &&
 478                !HasParagraphSpacingAfter() && !HasParagraphSpacingBefore() && !HasLineSpacing() &&
 479                !HasCharacterStyleName() && !HasParagraphStyleName() && !HasBulletNumber() && !HasBulletStyle() && !HasBulletSymbol();
 480     }
 481
 482     // return the attribute having the valid font and colours: it uses the
 483     // attributes set in attr and falls back first to attrDefault and then to
 484     // the text control font/colours for those attributes which are not set
 485     static wxRichTextAttr Combine(const wxRichTextAttr& attr,
 486                               const wxRichTextAttr& attrDef,
 487                               const wxTextCtrlBase *text);
 488 private:
 489     long                m_flags;
 490
 491     // Paragraph styles
 492     wxArrayInt          m_tabs; // array of int: tab stops in 1/10 mm
 493     int                 m_leftIndent; // left indent in 1/10 mm
 494     int                 m_leftSubIndent; // left indent for all but the first
 495                                          // line in a paragraph relative to the
 496                                          // first line, in 1/10 mm
 497     int                 m_rightIndent; // right indent in 1/10 mm
 498     wxTextAttrAlignment m_textAlignment;
 499
 500     int                 m_paragraphSpacingAfter;
 501     int                 m_paragraphSpacingBefore;
 502     int                 m_lineSpacing;
 503     int                 m_bulletStyle;
 504     int                 m_bulletNumber;
 505     wxChar              m_bulletSymbol;
 506
 507     // Character styles
 508     wxColour            m_colText,
 509                         m_colBack;
 510     int                 m_fontSize;
 511     int                 m_fontStyle;
 512     int                 m_fontWeight;
 513     bool                m_fontUnderlined;
 514     wxString            m_fontFaceName;
 515
 516     // Character style
 517     wxString            m_characterStyleName;
 518
 519     // Paragraph style
 520     wxString            m_paragraphStyleName;
 521 };
 522
 523 #define wxTEXT_ATTR_CHARACTER (wxTEXT_ATTR_FONT | wxTEXT_ATTR_BACKGROUND_COLOUR | wxTEXT_ATTR_TEXT_COLOUR)
 524
 525 #define wxTEXT_ATTR_PARAGRAPH (wxTEXT_ATTR_ALIGNMENT|wxTEXT_ATTR_LEFT_INDENT|wxTEXT_ATTR_RIGHT_INDENT|wxTEXT_ATTR_TABS|\
 526     wxTEXT_ATTR_PARA_SPACING_BEFORE|wxTEXT_ATTR_PARA_SPACING_AFTER|wxTEXT_ATTR_LINE_SPACING|\
 527     wxTEXT_ATTR_BULLET_STYLE|wxTEXT_ATTR_BULLET_NUMBER|wxTEXT_ATTR_BULLET_SYMBOL)
 528
 529 #define wxTEXT_ATTR_ALL (wxTEXT_ATTR_CHARACTER|wxTEXT_ATTR_PARAGRAPH)
 530
 531 /*!
 532  * wxRichTextObject class declaration
 533  * This is the base for drawable objects.
 534  */
 535
 536 class WXDLLIMPEXP_RICHTEXT wxRichTextObject: public wxObject
 537 {
 538     DECLARE_CLASS(wxRichTextObject)
 539 public:
 540 // Constructors
 541
 542     wxRichTextObject(wxRichTextObject* parent = NULL);
 543     virtual ~wxRichTextObject();
 544
 545 // Overrideables
 546
 547     /// Draw the item, within the given range. Some objects may ignore the range (for
 548     /// example paragraphs) while others must obey it (lines, to implement wrapping)
 549     virtual bool Draw(wxDC& dc, const wxRichTextRange& range, const wxRichTextRange& selectionRange, const wxRect& rect, int descent, int style) = 0;
 550
 551     /// Lay the item out at the specified position with the given size constraint.
 552     /// Layout must set the cached size.
 553     virtual bool Layout(wxDC& dc, const wxRect& rect, int style) = 0;
 554
 555     /// Hit-testing: returns a flag indicating hit test details, plus
 556     /// information about position
 557     virtual int HitTest(wxDC& WXUNUSED(dc), const wxPoint& WXUNUSED(pt), long& WXUNUSED(textPosition)) { return false; }
 558
 559     /// Finds the absolute position and row height for the given character position
 560     virtual bool FindPosition(wxDC& WXUNUSED(dc), long WXUNUSED(index), wxPoint& WXUNUSED(pt), int* WXUNUSED(height), bool WXUNUSED(forceLineStart)) { return false; }
 561
 562     /// Get the best size, i.e. the ideal starting size for this object irrespective
 563     /// of available space. For a short text string, it will be the size that exactly encloses
 564     /// the text. For a longer string, it might use the parent width for example.
 565     virtual wxSize GetBestSize() const { return m_size; }
 566
 567     /// Get the object size for the given range. Returns false if the range
 568     /// is invalid for this object.
 569     virtual bool GetRangeSize(const wxRichTextRange& range, wxSize& size, int& descent, wxDC& dc, int flags, wxPoint position = wxPoint(0,0)) const  = 0;
 570
 571     /// Do a split, returning an object containing the second part, and setting
 572     /// the first part in 'this'.
 573     virtual wxRichTextObject* DoSplit(long WXUNUSED(pos)) { return NULL; }
 574
 575     /// Calculate range. By default, guess that the object is 1 unit long.
 576     virtual void CalculateRange(long start, long& end) { end = start ; m_range.SetRange(start, end); }
 577
 578     /// Delete range
 579     virtual bool DeleteRange(const wxRichTextRange& WXUNUSED(range)) { return false; }
 580
 581     /// Returns true if the object is empty
 582     virtual bool IsEmpty() const { return false; }
 583
 584     /// Get any text in this object for the given range
 585     virtual wxString GetTextForRange(const wxRichTextRange& WXUNUSED(range)) const { return wxEmptyString; }
 586
 587     /// Returns true if this object can merge itself with the given one.
 588     virtual bool CanMerge(wxRichTextObject* WXUNUSED(object)) const { return false; }
 589
 590     /// Returns true if this object merged itself with the given one.
 591     /// The calling code will then delete the given object.
 592     virtual bool Merge(wxRichTextObject* WXUNUSED(object)) { return false; }
 593
 594     /// Dump to output stream for debugging
 595     virtual void Dump(wxTextOutputStream& stream);
 596
 597 // Accessors
 598
 599     /// Get/set the cached object size as calculated by Layout.
 600     virtual wxSize GetCachedSize() const { return m_size; }
 601     virtual void SetCachedSize(const wxSize& sz) { m_size = sz; }
 602
 603     /// Get/set the object position
 604     virtual wxPoint GetPosition() const { return m_pos; }
 605     virtual void SetPosition(const wxPoint& pos) { m_pos = pos; }
 606
 607     /// Get the rectangle enclosing the object
 608     virtual wxRect GetRect() const { return wxRect(GetPosition(), GetCachedSize()); }
 609
 610     /// Set the range
 611     void SetRange(const wxRichTextRange& range) { m_range = range; }
 612
 613     /// Get the range
 614     const wxRichTextRange& GetRange() const { return m_range; }
 615     wxRichTextRange& GetRange() { return m_range; }
 616
 617     /// Get/set dirty flag (whether the object needs Layout to be called)
 618     virtual bool GetDirty() const { return m_dirty; }
 619     virtual void SetDirty(bool dirty) { m_dirty = dirty; }
 620
 621     /// Is this composite?
 622     virtual bool IsComposite() const { return false; }
 623
 624     /// Get/set the parent.
 625     virtual wxRichTextObject* GetParent() const { return m_parent; }
 626     virtual void SetParent(wxRichTextObject* parent) { m_parent = parent; }
 627
 628     /// Set the margin around the object
 629     virtual void SetMargins(int margin);
 630     virtual void SetMargins(int leftMargin, int rightMargin, int topMargin, int bottomMargin);
 631     virtual int GetLeftMargin() const { return m_leftMargin; }
 632     virtual int GetRightMargin() const { return m_rightMargin; }
 633     virtual int GetTopMargin() const { return m_topMargin; }
 634     virtual int GetBottomMargin() const { return m_bottomMargin; }
 635
 636     /// Set attributes object
 637     void SetAttributes(const wxTextAttrEx& attr) { m_attributes = attr; }
 638     const wxTextAttrEx& GetAttributes() const { return m_attributes; }
 639     wxTextAttrEx& GetAttributes() { return m_attributes; }
 640
 641     /// Set/get stored descent
 642     void SetDescent(int descent) { m_descent = descent; }
 643     int GetDescent() const { return m_descent; }
 644
 645 // Operations
 646
 647     /// Clone the object
 648     virtual wxRichTextObject* Clone() const { return NULL; }
 649
 650     /// Copy
 651     void Copy(const wxRichTextObject& obj);
 652
 653     /// Reference-counting allows us to use the same object in multiple
 654     /// lists (not yet used)
 655     void Reference() { m_refCount ++; }
 656     void Dereference();
 657
 658     /// Convert units in tends of a millimetre to device units
 659     int ConvertTenthsMMToPixels(wxDC& dc, int units);
 660
 661 protected:
 662     wxSize                  m_size;
 663     wxPoint                 m_pos;
 664     int                     m_descent; // Descent for this object (if any)
 665     bool                    m_dirty;
 666     int                     m_refCount;
 667     wxRichTextObject*       m_parent;
 668
 669     /// The range of this object (start position to end position)
 670     wxRichTextRange         m_range;
 671
 672     /// Margins
 673     int                     m_leftMargin;
 674     int                     m_rightMargin;
 675     int                     m_topMargin;
 676     int                     m_bottomMargin;
 677
 678     /// Attributes
 679     wxTextAttrEx            m_attributes;
 680 };
 681
 682 WX_DECLARE_LIST_WITH_DECL( wxRichTextObject, wxRichTextObjectList, class WXDLLIMPEXP_RICHTEXT );
 683
 684 /*!
 685  * wxRichTextCompositeObject class declaration
 686  * Objects of this class can contain other objects.
 687  */
 688
 689 class WXDLLIMPEXP_RICHTEXT wxRichTextCompositeObject: public wxRichTextObject
 690 {
 691     DECLARE_CLASS(wxRichTextCompositeObject)
 692 public:
 693 // Constructors
 694
 695     wxRichTextCompositeObject(wxRichTextObject* parent = NULL);
 696     virtual ~wxRichTextCompositeObject();
 697
 698 // Overrideables
 699
 700     /// Hit-testing: returns a flag indicating hit test details, plus
 701     /// information about position
 702     virtual int HitTest(wxDC& dc, const wxPoint& pt, long& textPosition);
 703
 704     /// Finds the absolute position and row height for the given character position
 705     virtual bool FindPosition(wxDC& dc, long index, wxPoint& pt, int* height, bool forceLineStart);
 706
 707     /// Calculate range
 708     virtual void CalculateRange(long start, long& end);
 709
 710     /// Delete range
 711     virtual bool DeleteRange(const wxRichTextRange& range);
 712
 713     /// Get any text in this object for the given range
 714     virtual wxString GetTextForRange(const wxRichTextRange& range) const;
 715
 716     /// Dump to output stream for debugging
 717     virtual void Dump(wxTextOutputStream& stream);
 718
 719 // Accessors
 720
 721     /// Get the children
 722     wxRichTextObjectList& GetChildren() { return m_children; }
 723     const wxRichTextObjectList& GetChildren() const { return m_children; }
 724
 725     /// Get the child count
 726     size_t GetChildCount() const ;
 727
 728     /// Get the nth child
 729     wxRichTextObject* GetChild(size_t n) const ;
 730
 731     /// Get/set dirty flag
 732     virtual bool GetDirty() const { return m_dirty; }
 733     virtual void SetDirty(bool dirty) { m_dirty = dirty; }
 734
 735     /// Is this composite?
 736     virtual bool IsComposite() const { return true; }
 737
 738     /// Returns true if the buffer is empty
 739     virtual bool IsEmpty() const { return GetChildCount() == 0; }
 740
 741 // Operations
 742
 743     /// Copy
 744     void Copy(const wxRichTextCompositeObject& obj);
 745
 746     /// Append a child, returning the position
 747     size_t AppendChild(wxRichTextObject* child) ;
 748
 749     /// Insert the child in front of the given object, or at the beginning
 750     bool InsertChild(wxRichTextObject* child, wxRichTextObject* inFrontOf) ;
 751
 752     /// Delete the child
 753     bool RemoveChild(wxRichTextObject* child, bool deleteChild = false) ;
 754
 755     /// Delete all children
 756     bool DeleteChildren() ;
 757
 758     /// Recursively merge all pieces that can be merged.
 759     bool Defragment();
 760
 761 protected:
 762     wxRichTextObjectList    m_children;
 763 };
 764
 765 /*!
 766  * wxRichTextBox class declaration
 767  * This defines a 2D space to lay out objects
 768  */
 769
 770 class WXDLLIMPEXP_RICHTEXT wxRichTextBox: public wxRichTextCompositeObject
 771 {
 772     DECLARE_DYNAMIC_CLASS(wxRichTextBox)
 773 public:
 774 // Constructors
 775
 776     wxRichTextBox(wxRichTextObject* parent = NULL);
 777     wxRichTextBox(const wxRichTextBox& obj): wxRichTextCompositeObject() { Copy(obj); }
 778
 779 // Overrideables
 780
 781     /// Draw the item
 782     virtual bool Draw(wxDC& dc, const wxRichTextRange& range, const wxRichTextRange& selectionRange, const wxRect& rect, int descent, int style);
 783
 784     /// Lay the item out
 785     virtual bool Layout(wxDC& dc, const wxRect& rect, int style);
 786
 787     /// Get/set the object size for the given range. Returns false if the range
 788     /// is invalid for this object.
 789     virtual bool GetRangeSize(const wxRichTextRange& range, wxSize& size, int& descent, wxDC& dc, int flags, wxPoint position = wxPoint(0,0)) const;
 790
 791 // Accessors
 792
 793 // Operations
 794
 795     /// Clone
 796     virtual wxRichTextObject* Clone() const { return new wxRichTextBox(*this); }
 797
 798     /// Copy
 799     void Copy(const wxRichTextBox& obj);
 800
 801 protected:
 802 };
 803
 804 /*!
 805  * wxRichTextParagraphBox class declaration
 806  * This box knows how to lay out paragraphs.
 807  */
 808
 809 class WXDLLIMPEXP_RICHTEXT wxRichTextParagraphLayoutBox: public wxRichTextBox
 810 {
 811     DECLARE_DYNAMIC_CLASS(wxRichTextParagraphLayoutBox)
 812 public:
 813 // Constructors
 814
 815     wxRichTextParagraphLayoutBox(wxRichTextObject* parent = NULL);
 816     wxRichTextParagraphLayoutBox(const wxRichTextParagraphLayoutBox& obj):wxRichTextBox() { Init(); Copy(obj); }
 817
 818 // Overrideables
 819
 820     /// Draw the item
 821     virtual bool Draw(wxDC& dc, const wxRichTextRange& range, const wxRichTextRange& selectionRange, const wxRect& rect, int descent, int style);
 822
 823     /// Lay the item out
 824     virtual bool Layout(wxDC& dc, const wxRect& rect, int style);
 825
 826     /// Get/set the object size for the given range. Returns false if the range
 827     /// is invalid for this object.
 828     virtual bool GetRangeSize(const wxRichTextRange& range, wxSize& size, int& descent, wxDC& dc, int flags, wxPoint position = wxPoint(0,0)) const;
 829
 830     /// Delete range
 831     virtual bool DeleteRange(const wxRichTextRange& range);
 832
 833     /// Get any text in this object for the given range
 834     virtual wxString GetTextForRange(const wxRichTextRange& range) const;
 835
 836 // Accessors
 837
 838     /// Associate a control with the buffer, for operations that for example require refreshing the window.
 839     void SetRichTextCtrl(wxRichTextCtrl* ctrl) { m_ctrl = ctrl; }
 840
 841     /// Get the associated control.
 842     wxRichTextCtrl* GetRichTextCtrl() const { return m_ctrl; }
 843
 844 // Operations
 845
 846     /// Initialize the object.
 847     void Init();
 848
 849     /// Clear all children
 850     virtual void Clear();
 851
 852     /// Clear and initialize with one blank paragraph
 853     virtual void Reset();
 854
 855     /// Convenience function to add a paragraph of text
 856     virtual wxRichTextRange AddParagraph(const wxString& text);
 857
 858     /// Convenience function to add an image
 859     virtual wxRichTextRange AddImage(const wxImage& image);
 860
 861     /// Adds multiple paragraphs, based on newlines.
 862     virtual wxRichTextRange AddParagraphs(const wxString& text);
 863
 864     /// Get the line at the given position. If caretPosition is true, the position is
 865     /// a caret position, which is normally a smaller number.
 866     virtual wxRichTextLine* GetLineAtPosition(long pos, bool caretPosition = false) const;
 867
 868     /// Get the line at the given y pixel position, or the last line.
 869     virtual wxRichTextLine* GetLineAtYPosition(int y) const;
 870
 871     /// Get the paragraph at the given character or caret position
 872     virtual wxRichTextParagraph* GetParagraphAtPosition(long pos, bool caretPosition = false) const;
 873
 874     /// Get the line size at the given position
 875     virtual wxSize GetLineSizeAtPosition(long pos, bool caretPosition = false) const;
 876
 877     /// Given a position, get the number of the visible line (potentially many to a paragraph),
 878     /// starting from zero at the start of the buffer. We also have to pass a bool (startOfLine)
 879     /// that indicates whether the caret is being shown at the end of the previous line or at the start
 880     /// of the next, since the caret can be shown at 2 visible positions for the same underlying
 881     /// position.
 882     virtual long GetVisibleLineNumber(long pos, bool caretPosition = false, bool startOfLine = false) const;
 883
 884     /// Given a line number, get the corresponding wxRichTextLine object.
 885     virtual wxRichTextLine* GetLineForVisibleLineNumber(long lineNumber) const;
 886
 887     /// Get the leaf object in a paragraph at this position.
 888     /// Given a line number, get the corresponding wxRichTextLine object.
 889     virtual wxRichTextObject* GetLeafObjectAtPosition(long position) const;
 890
 891     /// Get the paragraph by number
 892     virtual wxRichTextParagraph* GetParagraphAtLine(long paragraphNumber) const;
 893
 894     /// Get the paragraph for a given line
 895     virtual wxRichTextParagraph* GetParagraphForLine(wxRichTextLine* line) const;
 896
 897     /// Get the length of the paragraph
 898     virtual int GetParagraphLength(long paragraphNumber) const;
 899
 900     /// Get the number of paragraphs
 901     virtual int GetParagraphCount() const { return GetChildCount(); }
 902
 903     /// Get the number of visible lines
 904     virtual int GetLineCount() const;
 905
 906     /// Get the text of the paragraph
 907     virtual wxString GetParagraphText(long paragraphNumber) const;
 908
 909     /// Convert zero-based line column and paragraph number to a position.
 910     virtual long XYToPosition(long x, long y) const;
 911
 912     /// Convert zero-based position to line column and paragraph number
 913     virtual bool PositionToXY(long pos, long* x, long* y) const;
 914
 915     /// Set text attributes: character and/or paragraph styles.
 916     virtual bool SetStyle(const wxRichTextRange& range, const wxRichTextAttr& style, bool withUndo = true);
 917     virtual bool SetStyle(const wxRichTextRange& range, const wxTextAttrEx& style, bool withUndo = true);
 918
 919     /// Get the text attributes for this position.
 920     virtual bool GetStyle(long position, wxTextAttrEx& style) const;
 921     virtual bool GetStyle(long position, wxRichTextAttr& style) const;
 922
 923     /// Test if this whole range has character attributes of the specified kind. If any
 924     /// of the attributes are different within the range, the test fails. You
 925     /// can use this to implement, for example, bold button updating. style must have
 926     /// flags indicating which attributes are of interest.
 927     virtual bool HasCharacterAttributes(const wxRichTextRange& range, const wxTextAttrEx& style) const;
 928     virtual bool HasCharacterAttributes(const wxRichTextRange& range, const wxRichTextAttr& style) const;
 929
 930     /// Test if this whole range has paragraph attributes of the specified kind. If any
 931     /// of the attributes are different within the range, the test fails. You
 932     /// can use this to implement, for example, centering button updating. style must have
 933     /// flags indicating which attributes are of interest.
 934     virtual bool HasParagraphAttributes(const wxRichTextRange& range, const wxTextAttrEx& style) const;
 935     virtual bool HasParagraphAttributes(const wxRichTextRange& range, const wxRichTextAttr& style) const;
 936
 937     /// Clone
 938     virtual wxRichTextObject* Clone() const { return new wxRichTextParagraphLayoutBox(*this); }
 939
 940     /// Insert fragment into this box at the given position. If partialParagraph is true,
 941     /// it is assumed that the last (or only) paragraph is just a piece of data with no paragraph
 942     /// marker.
 943     virtual bool InsertFragment(long position, wxRichTextFragment& fragment);
 944
 945     /// Make a copy of the fragment corresponding to the given range, putting it in 'fragment'.
 946     virtual bool CopyFragment(const wxRichTextRange& range, wxRichTextFragment& fragment);
 947
 948     /// Copy
 949     void Copy(const wxRichTextParagraphLayoutBox& obj);
 950
 951     /// Calculate ranges
 952     virtual void UpdateRanges() { long end; CalculateRange(0, end); }
 953
 954     /// Get all the text
 955     virtual wxString GetText() const;
 956
 957     /// Set default style for new content. Setting it to a default attribute
 958     /// makes new content take on the 'basic' style.
 959     virtual bool SetDefaultStyle(const wxTextAttrEx& style);
 960
 961     /// Get default style
 962     virtual const wxTextAttrEx& GetDefaultStyle() const { return m_defaultAttributes; }
 963
 964     /// Set basic (overall) style
 965     virtual void SetBasicStyle(const wxTextAttrEx& style) { m_attributes = style; }
 966     virtual void SetBasicStyle(const wxRichTextAttr& style) { style.CopyTo(m_attributes); }
 967
 968     /// Get basic (overall) style
 969     virtual const wxTextAttrEx& GetBasicStyle() const { return m_attributes; }
 970
 971     /// Invalidate the buffer. With no argument, invalidates whole buffer.
 972     void Invalidate(const wxRichTextRange& invalidRange = wxRICHTEXT_ALL);
 973
 974     /// Get invalid range, rounding to entire paragraphs if argument is true.
 975     wxRichTextRange GetInvalidRange(bool wholeParagraphs = false) const;
 976
 977 protected:
 978     wxRichTextCtrl* m_ctrl;
 979     wxTextAttrEx    m_defaultAttributes;
 980
 981     /// The invalidated range that will need full layout
 982     wxRichTextRange         m_invalidRange;
 983 };
 984
 985 /*!
 986  * wxRichTextFragment class declaration
 987  * This is a lind of paragraph layout box used for storing
 988  * paragraphs for Undo/Redo, for example.
 989  */
 990
 991 class WXDLLIMPEXP_RICHTEXT wxRichTextFragment: public wxRichTextParagraphLayoutBox
 992 {
 993     DECLARE_DYNAMIC_CLASS(wxRichTextFragment)
 994 public:
 995 // Constructors
 996
 997     wxRichTextFragment() { Init(); }
 998     wxRichTextFragment(const wxRichTextFragment& obj):wxRichTextParagraphLayoutBox() { Init(); Copy(obj); }
 999
1000 // Accessors
1001
1002     /// Get/set whether the last paragraph is partial or complete
1003     void SetPartialParagraph(bool partialPara) { m_partialParagraph = partialPara; }
1004     bool GetPartialParagraph() const { return m_partialParagraph; }
1005
1006 // Overrideables
1007
1008 // Operations
1009
1010     /// Initialise
1011     void Init();
1012
1013     /// Copy
1014     void Copy(const wxRichTextFragment& obj);
1015
1016     /// Clone
1017     virtual wxRichTextObject* Clone() const { return new wxRichTextFragment(*this); }
1018
1019 protected:
1020
1021     // Is the last paragraph partial or complete?
1022     bool        m_partialParagraph;
1023 };
1024
1025 /*!
1026  * wxRichTextLine class declaration
1027  * This object represents a line in a paragraph, and stores
1028  * offsets from the start of the paragraph representing the
1029  * start and end positions of the line.
1030  */
1031
1032 class WXDLLIMPEXP_RICHTEXT wxRichTextLine
1033 {
1034 public:
1035 // Constructors
1036
1037     wxRichTextLine(wxRichTextParagraph* parent);
1038     wxRichTextLine(const wxRichTextLine& obj) { Init( NULL); Copy(obj); }
1039     virtual ~wxRichTextLine() {}
1040
1041 // Overrideables
1042
1043 // Accessors
1044
1045     /// Set the range
1046     void SetRange(const wxRichTextRange& range) { m_range = range; }
1047     void SetRange(long from, long to) { m_range = wxRichTextRange(from, to); }
1048
1049     /// Get the parent paragraph
1050     wxRichTextParagraph* GetParent() { return m_parent; }
1051
1052     /// Get the range
1053     const wxRichTextRange& GetRange() const { return m_range; }
1054     wxRichTextRange& GetRange() { return m_range; }
1055
1056     /// Get the absolute range
1057     wxRichTextRange GetAbsoluteRange() const;
1058
1059     /// Get/set the line size as calculated by Layout.
1060     virtual wxSize GetSize() const { return m_size; }
1061     virtual void SetSize(const wxSize& sz) { m_size = sz; }
1062
1063     /// Get/set the object position relative to the parent
1064     virtual wxPoint GetPosition() const { return m_pos; }
1065     virtual void SetPosition(const wxPoint& pos) { m_pos = pos; }
1066
1067     /// Get the absolute object position
1068     virtual wxPoint GetAbsolutePosition() const;
1069
1070     /// Get the rectangle enclosing the line
1071     virtual wxRect GetRect() const { return wxRect(GetAbsolutePosition(), GetSize()); }
1072
1073     /// Set/get stored descent
1074     void SetDescent(int descent) { m_descent = descent; }
1075     int GetDescent() const { return m_descent; }
1076
1077 // Operations
1078
1079     /// Initialisation
1080     void Init(wxRichTextParagraph* parent);
1081
1082     /// Copy
1083     void Copy(const wxRichTextLine& obj);
1084
1085     /// Clone
1086     virtual wxRichTextLine* Clone() const { return new wxRichTextLine(*this); }
1087
1088 protected:
1089
1090     /// The range of the line (start position to end position)
1091     /// This is relative to the parent paragraph.
1092     wxRichTextRange     m_range;
1093
1094     /// Size and position measured relative to top of paragraph
1095     wxPoint             m_pos;
1096     wxSize              m_size;
1097
1098     /// Maximum descent for this line (location of text baseline)
1099     int                 m_descent;
1100
1101     // The parent object
1102     wxRichTextParagraph* m_parent;
1103 };
1104
1105 WX_DECLARE_LIST_WITH_DECL( wxRichTextLine, wxRichTextLineList , class WXDLLIMPEXP_RICHTEXT );
1106
1107 /*!
1108  * wxRichTextParagraph class declaration
1109  * This object represents a single paragraph (or in a straight text editor, a line).
1110  */
1111
1112 class WXDLLIMPEXP_RICHTEXT wxRichTextParagraph: public wxRichTextBox
1113 {
1114     DECLARE_DYNAMIC_CLASS(wxRichTextParagraph)
1115 public:
1116 // Constructors
1117
1118     wxRichTextParagraph(wxRichTextObject* parent = NULL, wxTextAttrEx* style = NULL);
1119     wxRichTextParagraph(const wxString& text, wxRichTextObject* parent = NULL, wxTextAttrEx* style = NULL);
1120     virtual ~wxRichTextParagraph();
1121     wxRichTextParagraph(const wxRichTextParagraph& obj):wxRichTextBox() { Copy(obj); }
1122
1123 // Overrideables
1124
1125     /// Draw the item
1126     virtual bool Draw(wxDC& dc, const wxRichTextRange& range, const wxRichTextRange& selectionRange, const wxRect& rect, int descent, int style);
1127
1128     /// Lay the item out
1129     virtual bool Layout(wxDC& dc, const wxRect& rect, int style);
1130
1131     /// Get/set the object size for the given range. Returns false if the range
1132     /// is invalid for this object.
1133     virtual bool GetRangeSize(const wxRichTextRange& range, wxSize& size, int& descent, wxDC& dc, int flags, wxPoint position = wxPoint(0,0)) const;
1134
1135     /// Finds the absolute position and row height for the given character position
1136     virtual bool FindPosition(wxDC& dc, long index, wxPoint& pt, int* height, bool forceLineStart);
1137
1138     /// Hit-testing: returns a flag indicating hit test details, plus
1139     /// information about position
1140     virtual int HitTest(wxDC& dc, const wxPoint& pt, long& textPosition);
1141
1142     /// Calculate range
1143     virtual void CalculateRange(long start, long& end);
1144
1145 // Accessors
1146
1147     /// Get the cached lines
1148     wxRichTextLineList& GetLines() { return m_cachedLines; }
1149
1150 // Operations
1151
1152     /// Copy
1153     void Copy(const wxRichTextParagraph& obj);
1154
1155     /// Clone
1156     virtual wxRichTextObject* Clone() const { return new wxRichTextParagraph(*this); }
1157
1158     /// Clear the cached lines
1159     void ClearLines();
1160
1161 // Implementation
1162
1163     /// Apply paragraph styles such as centering to the wrapped lines
1164     virtual void ApplyParagraphStyle(const wxRect& rect);
1165
1166     /// Insert text at the given position
1167     virtual bool InsertText(long pos, const wxString& text);
1168
1169     /// Split an object at this position if necessary, and return
1170     /// the previous object, or NULL if inserting at beginning.
1171     virtual wxRichTextObject* SplitAt(long pos, wxRichTextObject** previousObject = NULL);
1172
1173     /// Move content to a list from this point
1174     virtual void MoveToList(wxRichTextObject* obj, wxList& list);
1175
1176     /// Add content back from list
1177     virtual void MoveFromList(wxList& list);
1178
1179     /// Get the plain text searching from the start or end of the range.
1180     /// The resulting string may be shorter than the range given.
1181     bool GetContiguousPlainText(wxString& text, const wxRichTextRange& range, bool fromStart = true);
1182
1183     /// Find a suitable wrap position. wrapPosition is the last position in the line to the left
1184     /// of the split.
1185     bool FindWrapPosition(const wxRichTextRange& range, wxDC& dc, int availableSpace, long& wrapPosition);
1186
1187     /// Find the object at the given position
1188     wxRichTextObject* FindObjectAtPosition(long position);
1189
1190     /// Get the bullet text for this paragraph.
1191     wxString GetBulletText();
1192
1193     /// Allocate or reuse a line object
1194     wxRichTextLine* AllocateLine(int pos);
1195
1196     /// Clear remaining unused line objects, if any
1197     bool ClearUnusedLines(int lineCount);
1198
1199 protected:
1200     /// The lines that make up the wrapped paragraph
1201     wxRichTextLineList m_cachedLines;
1202 };
1203
1204 /*!
1205  * wxRichTextPlainText class declaration
1206  * This object represents a single piece of text.
1207  */
1208
1209 class WXDLLIMPEXP_RICHTEXT wxRichTextPlainText: public wxRichTextObject
1210 {
1211     DECLARE_DYNAMIC_CLASS(wxRichTextPlainText)
1212 public:
1213 // Constructors
1214
1215     wxRichTextPlainText(const wxString& text = wxEmptyString, wxRichTextObject* parent = NULL, wxTextAttrEx* style = NULL);
1216     wxRichTextPlainText(const wxRichTextPlainText& obj):wxRichTextObject() { Copy(obj); }
1217
1218 // Overrideables
1219
1220     /// Draw the item
1221     virtual bool Draw(wxDC& dc, const wxRichTextRange& range, const wxRichTextRange& selectionRange, const wxRect& rect, int descent, int style);
1222
1223     /// Lay the item out
1224     virtual bool Layout(wxDC& dc, const wxRect& rect, int style);
1225
1226     /// Get/set the object size for the given range. Returns false if the range
1227     /// is invalid for this object.
1228     virtual bool GetRangeSize(const wxRichTextRange& range, wxSize& size, int& descent, wxDC& dc, int flags, wxPoint position/* = wxPoint(0,0)*/) const;
1229
1230     /// Get any text in this object for the given range
1231     virtual wxString GetTextForRange(const wxRichTextRange& range) const;
1232
1233     /// Do a split, returning an object containing the second part, and setting
1234     /// the first part in 'this'.
1235     virtual wxRichTextObject* DoSplit(long pos);
1236
1237     /// Calculate range
1238     virtual void CalculateRange(long start, long& end);
1239
1240     /// Delete range
1241     virtual bool DeleteRange(const wxRichTextRange& range);
1242
1243     /// Returns true if the object is empty
1244     virtual bool IsEmpty() const { return m_text.empty(); }
1245
1246     /// Returns true if this object can merge itself with the given one.
1247     virtual bool CanMerge(wxRichTextObject* object) const;
1248
1249     /// Returns true if this object merged itself with the given one.
1250     /// The calling code will then delete the given object.
1251     virtual bool Merge(wxRichTextObject* object);
1252
1253     /// Dump to output stream for debugging
1254     virtual void Dump(wxTextOutputStream& stream);
1255
1256 // Accessors
1257
1258     /// Get the text
1259     const wxString& GetText() const { return m_text; }
1260
1261     /// Set the text
1262     void SetText(const wxString& text) { m_text = text; }
1263
1264 // Operations
1265
1266     /// Copy
1267     void Copy(const wxRichTextPlainText& obj);
1268
1269     /// Clone
1270     virtual wxRichTextObject* Clone() const { return new wxRichTextPlainText(*this); }
1271 private:
1272     bool DrawTabbedString(wxDC& dc,const wxRect& rect,wxString& str, wxCoord& x, wxCoord& y, bool selected);
1273
1274 protected:
1275     wxString    m_text;
1276 };
1277
1278 /*!
1279  * wxRichTextImageBlock stores information about an image, in binary in-memory form
1280  */
1281
1282 class WXDLLIMPEXP_BASE wxDataInputStream;
1283 class WXDLLIMPEXP_BASE wxDataOutputStream;
1284
1285 class WXDLLIMPEXP_RICHTEXT wxRichTextImageBlock: public wxObject
1286 {
1287 public:
1288     wxRichTextImageBlock();
1289     wxRichTextImageBlock(const wxRichTextImageBlock& block);
1290     virtual ~wxRichTextImageBlock();
1291
1292     void Init();
1293     void Clear();
1294
1295     // Load the original image into a memory block.
1296     // If the image is not a JPEG, we must convert it into a JPEG
1297     // to conserve space.
1298     // If it's not a JPEG we can make use of 'image', already scaled, so we don't have to
1299     // load the image a 2nd time.
1300     virtual bool MakeImageBlock(const wxString& filename, int imageType, wxImage& image, bool convertToJPEG = true);
1301
1302     // Make an image block from the wxImage in the given
1303     // format.
1304     virtual bool MakeImageBlock(wxImage& image, int imageType, int quality = 80);
1305
1306     // Write to a file
1307     bool Write(const wxString& filename);
1308
1309     // Write data in hex to a stream
1310     bool WriteHex(wxOutputStream& stream);
1311
1312     // Read data in hex from a stream
1313     bool ReadHex(wxInputStream& stream, int length, int imageType);
1314
1315     // Copy from 'block'
1316     void Copy(const wxRichTextImageBlock& block);
1317
1318     // Load a wxImage from the block
1319     bool Load(wxImage& image);
1320
1321 //// Operators
1322     void operator=(const wxRichTextImageBlock& block);
1323
1324 //// Accessors
1325
1326     unsigned char* GetData() const { return m_data; }
1327     size_t GetDataSize() const { return m_dataSize; }
1328     int GetImageType() const { return m_imageType; }
1329
1330     void SetData(unsigned char* image) { m_data = image; }
1331     void SetDataSize(size_t size) { m_dataSize = size; }
1332     void SetImageType(int imageType) { m_imageType = imageType; }
1333
1334     bool Ok() const { return GetData() != NULL; }
1335
1336 /// Implementation
1337
1338     /// Allocate and read from stream as a block of memory
1339     static unsigned char* ReadBlock(wxInputStream& stream, size_t size);
1340     static unsigned char* ReadBlock(const wxString& filename, size_t size);
1341
1342     // Write memory block to stream
1343     static bool WriteBlock(wxOutputStream& stream, unsigned char* block, size_t size);
1344
1345     // Write memory block to file
1346     static bool WriteBlock(const wxString& filename, unsigned char* block, size_t size);
1347
1348 protected:
1349     // Size in bytes of the image stored.
1350     // This is in the raw, original form such as a JPEG file.
1351     unsigned char*      m_data;
1352     size_t              m_dataSize;
1353     int                 m_imageType; // wxWin type id
1354 };
1355
1356
1357 /*!
1358  * wxRichTextImage class declaration
1359  * This object represents an image.
1360  */
1361
1362 class WXDLLIMPEXP_RICHTEXT wxRichTextImage: public wxRichTextObject
1363 {
1364     DECLARE_DYNAMIC_CLASS(wxRichTextImage)
1365 public:
1366 // Constructors
1367
1368     wxRichTextImage(wxRichTextObject* parent = NULL):wxRichTextObject(parent) { }
1369     wxRichTextImage(const wxImage& image, wxRichTextObject* parent = NULL);
1370     wxRichTextImage(const wxRichTextImageBlock& imageBlock, wxRichTextObject* parent = NULL);
1371     wxRichTextImage(const wxRichTextImage& obj):wxRichTextObject() { Copy(obj); }
1372
1373 // Overrideables
1374
1375     /// Draw the item
1376     virtual bool Draw(wxDC& dc, const wxRichTextRange& range, const wxRichTextRange& selectionRange, const wxRect& rect, int descent, int style);
1377
1378     /// Lay the item out
1379     virtual bool Layout(wxDC& dc, const wxRect& rect, int style);
1380
1381     /// Get the object size for the given range. Returns false if the range
1382     /// is invalid for this object.
1383     virtual bool GetRangeSize(const wxRichTextRange& range, wxSize& size, int& descent, wxDC& dc, int flags, wxPoint position = wxPoint(0,0)) const;
1384
1385     /// Returns true if the object is empty
1386     virtual bool IsEmpty() const { return !m_image.Ok(); }
1387
1388 // Accessors
1389
1390     /// Get the image
1391     const wxImage& GetImage() const { return m_image; }
1392
1393     /// Set the image
1394     void SetImage(const wxImage& image) { m_image = image; }
1395
1396     /// Get the image block containing the raw data
1397     wxRichTextImageBlock& GetImageBlock() { return m_imageBlock; }
1398
1399 // Operations
1400
1401     /// Copy
1402     void Copy(const wxRichTextImage& obj);
1403
1404     /// Clone
1405     virtual wxRichTextObject* Clone() const { return new wxRichTextImage(*this); }
1406
1407     /// Load wxImage from the block
1408     virtual bool LoadFromBlock();
1409
1410     /// Make block from the wxImage
1411     virtual bool MakeBlock();
1412
1413 protected:
1414     // TODO: reduce the multiple representations of data
1415     wxImage                 m_image;
1416     wxBitmap                m_bitmap;
1417     wxRichTextImageBlock    m_imageBlock;
1418 };
1419
1420
1421 /*!
1422  * wxRichTextBuffer class declaration
1423  * This is a kind of box, used to represent the whole buffer
1424  */
1425
1426 class WXDLLIMPEXP_RICHTEXT wxRichTextCommand;
1427 class WXDLLIMPEXP_RICHTEXT wxRichTextAction;
1428
1429 class WXDLLIMPEXP_RICHTEXT wxRichTextBuffer: public wxRichTextParagraphLayoutBox
1430 {
1431     DECLARE_DYNAMIC_CLASS(wxRichTextBuffer)
1432 public:
1433 // Constructors
1434
1435     wxRichTextBuffer() { Init(); }
1436     wxRichTextBuffer(const wxRichTextBuffer& obj):wxRichTextParagraphLayoutBox() { Init(); Copy(obj); }
1437     virtual ~wxRichTextBuffer() ;
1438
1439 // Accessors
1440
1441     /// Gets the command processor
1442     wxCommandProcessor* GetCommandProcessor() const { return m_commandProcessor; }
1443
1444     /// Set style sheet, if any.
1445     void SetStyleSheet(wxRichTextStyleSheet* styleSheet) { m_styleSheet = styleSheet; }
1446     wxRichTextStyleSheet* GetStyleSheet() const { return m_styleSheet; }
1447
1448 // Operations
1449
1450     /// Initialisation
1451     void Init();
1452
1453     /// Clears the buffer and resets the command processor
1454     virtual void Clear();
1455
1456     /// The same as Clear, and adds an empty paragraph.
1457     virtual void Reset();
1458
1459     /// Load a file
1460     virtual bool LoadFile(const wxString& filename, int type = wxRICHTEXT_TYPE_ANY);
1461
1462     /// Save a file
1463     virtual bool SaveFile(const wxString& filename, int type = wxRICHTEXT_TYPE_ANY);
1464
1465     /// Load from a stream
1466     virtual bool LoadFile(wxInputStream& stream, int type = wxRICHTEXT_TYPE_ANY);
1467
1468     /// Save to a stream
1469     virtual bool SaveFile(wxOutputStream& stream, int type = wxRICHTEXT_TYPE_ANY);
1470
1471     /// Convenience function to add a paragraph of text
1472     virtual wxRichTextRange AddParagraph(const wxString& text) { Modify(); return wxRichTextParagraphLayoutBox::AddParagraph(text); }
1473
1474     /// Begin collapsing undo/redo commands. Note that this may not work properly
1475     /// if combining commands that delete or insert content, changing ranges for
1476     /// subsequent actions.
1477     virtual bool BeginBatchUndo(const wxString& cmdName);
1478
1479     /// End collapsing undo/redo commands
1480     virtual bool EndBatchUndo();
1481
1482     /// Collapsing commands?
1483     virtual bool BatchingUndo() const { return m_batchedCommandDepth > 0; }
1484
1485     /// Submit immediately, or delay according to whether collapsing is on
1486     virtual bool SubmitAction(wxRichTextAction* action);
1487
1488     /// Get collapsed command
1489     virtual wxRichTextCommand* GetBatchedCommand() const { return m_batchedCommand; }
1490
1491     /// Begin suppressing undo/redo commands. The way undo is suppressed may be implemented
1492     /// differently by each command. If not dealt with by a command implementation, then
1493     /// it will be implemented automatically by not storing the command in the undo history
1494     /// when the action is submitted to the command processor.
1495     virtual bool BeginSuppressUndo();
1496
1497     /// End suppressing undo/redo commands.
1498     virtual bool EndSuppressUndo();
1499
1500     /// Collapsing commands?
1501     virtual bool SuppressingUndo() const { return m_suppressUndo > 0; }
1502
1503     /// Copy the range to the clipboard
1504     virtual bool CopyToClipboard(const wxRichTextRange& range);
1505
1506     /// Paste the clipboard content to the buffer
1507     virtual bool PasteFromClipboard(long position);
1508
1509     /// Can we paste from the clipboard?
1510     virtual bool CanPasteFromClipboard() const;
1511
1512     /// Begin using a style
1513     virtual bool BeginStyle(const wxTextAttrEx& style);
1514
1515     /// End the style
1516     virtual bool EndStyle();
1517
1518     /// End all styles
1519     virtual bool EndAllStyles();
1520
1521     /// Clear the style stack
1522     virtual void ClearStyleStack();
1523
1524     /// Get the size of the style stack, for example to check correct nesting
1525     virtual size_t GetStyleStackSize() const { return m_attributeStack.GetCount(); }
1526
1527     /// Begin using bold
1528     bool BeginBold();
1529
1530     /// End using bold
1531     bool EndBold() { return EndStyle(); }
1532
1533     /// Begin using italic
1534     bool BeginItalic();
1535
1536     /// End using italic
1537     bool EndItalic() { return EndStyle(); }
1538
1539     /// Begin using underline
1540     bool BeginUnderline();
1541
1542     /// End using underline
1543     bool EndUnderline() { return EndStyle(); }
1544
1545     /// Begin using point size
1546     bool BeginFontSize(int pointSize);
1547
1548     /// End using point size
1549     bool EndFontSize() { return EndStyle(); }
1550
1551     /// Begin using this font
1552     bool BeginFont(const wxFont& font);
1553
1554     /// End using a font
1555     bool EndFont() { return EndStyle(); }
1556
1557     /// Begin using this colour
1558     bool BeginTextColour(const wxColour& colour);
1559
1560     /// End using a colour
1561     bool EndTextColour() { return EndStyle(); }
1562
1563     /// Begin using alignment
1564     bool BeginAlignment(wxTextAttrAlignment alignment);
1565
1566     /// End alignment
1567     bool EndAlignment() { return EndStyle(); }
1568
1569     /// Begin left indent
1570     bool BeginLeftIndent(int leftIndent, int leftSubIndent = 0);
1571
1572     /// End left indent
1573     bool EndLeftIndent() { return EndStyle(); }
1574
1575     /// Begin right indent
1576     bool BeginRightIndent(int rightIndent);
1577
1578     /// End right indent
1579     bool EndRightIndent() { return EndStyle(); }
1580
1581     /// Begin paragraph spacing
1582     bool BeginParagraphSpacing(int before, int after);
1583
1584     /// End paragraph spacing
1585     bool EndParagraphSpacing() { return EndStyle(); }
1586
1587     /// Begin line spacing
1588     bool BeginLineSpacing(int lineSpacing);
1589
1590     /// End line spacing
1591     bool EndLineSpacing() { return EndStyle(); }
1592
1593     /// Begin numbered bullet
1594     bool BeginNumberedBullet(int bulletNumber, int leftIndent, int leftSubIndent, int bulletStyle = wxTEXT_ATTR_BULLET_STYLE_ARABIC|wxTEXT_ATTR_BULLET_STYLE_PERIOD);
1595
1596     /// End numbered bullet
1597     bool EndNumberedBullet() { return EndStyle(); }
1598
1599     /// Begin symbol bullet
1600     bool BeginSymbolBullet(wxChar symbol, int leftIndent, int leftSubIndent, int bulletStyle = wxTEXT_ATTR_BULLET_STYLE_SYMBOL);
1601
1602     /// End symbol bullet
1603     bool EndSymbolBullet() { return EndStyle(); }
1604
1605     /// Begin named character style
1606     bool BeginCharacterStyle(const wxString& characterStyle);
1607
1608     /// End named character style
1609     bool EndCharacterStyle() { return EndStyle(); }
1610
1611     /// Begin named paragraph style
1612     bool BeginParagraphStyle(const wxString& paragraphStyle);
1613
1614     /// End named character style
1615     bool EndParagraphStyle() { return EndStyle(); }
1616
1617 // Implementation
1618
1619     /// Copy
1620     void Copy(const wxRichTextBuffer& obj) { wxRichTextBox::Copy(obj); }
1621
1622     /// Clone
1623     virtual wxRichTextObject* Clone() const { return new wxRichTextBuffer(*this); }
1624
1625     /// Submit command to insert the given text
1626     bool InsertTextWithUndo(long pos, const wxString& text, wxRichTextCtrl* ctrl);
1627
1628     /// Submit command to insert a newline
1629     bool InsertNewlineWithUndo(long pos, wxRichTextCtrl* ctrl);
1630
1631     /// Submit command to insert the given image
1632     bool InsertImageWithUndo(long pos, const wxRichTextImageBlock& imageBlock, wxRichTextCtrl* ctrl);
1633
1634     /// Submit command to delete this range
1635     bool DeleteRangeWithUndo(const wxRichTextRange& range, long initialCaretPosition, long newCaretPositon, wxRichTextCtrl* ctrl);
1636
1637     /// Mark modified
1638     void Modify(bool modify = true) { m_modified = modify; }
1639     bool IsModified() const { return m_modified; }
1640
1641     /// Dumps contents of buffer for debugging purposes
1642     virtual void Dump();
1643     virtual void Dump(wxTextOutputStream& stream) { wxRichTextParagraphLayoutBox::Dump(stream); }
1644
1645     /// Returns the file handlers
1646     static wxList& GetHandlers() { return sm_handlers; }
1647
1648     /// Adds a handler to the end
1649     static void AddHandler(wxRichTextFileHandler *handler);
1650
1651     /// Inserts a handler at the front
1652     static void InsertHandler(wxRichTextFileHandler *handler);
1653
1654     /// Removes a handler
1655     static bool RemoveHandler(const wxString& name);
1656
1657     /// Finds a handler by name
1658     static wxRichTextFileHandler *FindHandler(const wxString& name);
1659
1660     /// Finds a handler by extension and type
1661     static wxRichTextFileHandler *FindHandler(const wxString& extension, int imageType);
1662
1663     /// Finds a handler by filename or, if supplied, type
1664     static wxRichTextFileHandler *FindHandlerFilenameOrType(const wxString& filename, int imageType);
1665
1666     /// Finds a handler by type
1667     static wxRichTextFileHandler *FindHandler(int imageType);
1668
1669     /// Gets a wildcard incorporating all visible handlers. If 'types' is present,
1670     /// will be filled with the file type corresponding to each filter. This can be
1671     /// used to determine the type to pass to LoadFile given a selected filter.
1672     static wxString GetExtWildcard(bool combine = false, bool save = false, wxArrayInt* types = NULL);
1673
1674     /// Clean up handlers
1675     static void CleanUpHandlers();
1676
1677     /// Initialise the standard handlers
1678     static void InitStandardHandlers();
1679
1680 protected:
1681
1682     /// Command processor
1683     wxCommandProcessor*     m_commandProcessor;
1684
1685     /// Has been modified?
1686     bool                    m_modified;
1687
1688     /// Collapsed command stack
1689     int                     m_batchedCommandDepth;
1690
1691     /// Name for collapsed command
1692     wxString                m_batchedCommandsName;
1693
1694     /// Current collapsed command accumulating actions
1695     wxRichTextCommand*      m_batchedCommand;
1696
1697     /// Whether to suppress undo
1698     int                     m_suppressUndo;
1699
1700     /// Style sheet, if any
1701     wxRichTextStyleSheet*   m_styleSheet;
1702
1703     /// Stack of attributes for convenience functions
1704     wxList                  m_attributeStack;
1705
1706     /// File handlers
1707     static wxList           sm_handlers;
1708 };
1709
1710 /*!
1711  * The command identifiers
1712  *
1713  */
1714
1715 enum wxRichTextCommandId
1716 {
1717     wxRICHTEXT_INSERT,
1718     wxRICHTEXT_DELETE,
1719     wxRICHTEXT_CHANGE_STYLE
1720 };
1721
1722 /*!
1723  * Command classes for undo/redo
1724  *
1725  */
1726
1727 class WXDLLIMPEXP_RICHTEXT wxRichTextAction;
1728 class WXDLLIMPEXP_RICHTEXT wxRichTextCommand: public wxCommand
1729 {
1730 public:
1731     // Ctor for one action
1732     wxRichTextCommand(const wxString& name, wxRichTextCommandId id, wxRichTextBuffer* buffer,
1733         wxRichTextCtrl* ctrl, bool ignoreFirstTime = false);
1734
1735     // Ctor for multiple actions
1736     wxRichTextCommand(const wxString& name);
1737
1738     virtual ~wxRichTextCommand();
1739
1740     bool Do();
1741     bool Undo();
1742
1743     void AddAction(wxRichTextAction* action);
1744     void ClearActions();
1745
1746     wxList& GetActions() { return m_actions; }
1747
1748 protected:
1749
1750     wxList  m_actions;
1751 };
1752
1753 /*!
1754  * wxRichTextAction class declaration
1755  * There can be more than one action in a command.
1756  */
1757
1758 class WXDLLIMPEXP_RICHTEXT wxRichTextAction: public wxObject
1759 {
1760 public:
1761     wxRichTextAction(wxRichTextCommand* cmd, const wxString& name, wxRichTextCommandId id, wxRichTextBuffer* buffer,
1762         wxRichTextCtrl* ctrl, bool ignoreFirstTime = false);
1763
1764     virtual ~wxRichTextAction();
1765
1766     bool Do();
1767     bool Undo();
1768
1769     /// Update the control appearance
1770     void UpdateAppearance(long caretPosition, bool sendUpdateEvent = false);
1771
1772     /// Replace the buffer paragraphs with the given fragment.
1773     void ApplyParagraphs(const wxRichTextFragment& fragment);
1774
1775     /// Get the fragments
1776     wxRichTextFragment& GetNewParagraphs() { return m_newParagraphs; }
1777     wxRichTextFragment& GetOldParagraphs() { return m_oldParagraphs; }
1778
1779     /// Set/get the position used for e.g. insertion
1780     void SetPosition(long pos) { m_position = pos; }
1781     long GetPosition() const { return m_position; }
1782
1783     /// Set/get the range for e.g. deletion
1784     void SetRange(const wxRichTextRange& range) { m_range = range; }
1785     const wxRichTextRange& GetRange() const { return m_range; }
1786
1787     /// Get name
1788     const wxString& GetName() const { return m_name; }
1789
1790 protected:
1791     // Action name
1792     wxString                        m_name;
1793
1794     // Buffer
1795     wxRichTextBuffer*               m_buffer;
1796
1797     // Control
1798     wxRichTextCtrl*                 m_ctrl;
1799
1800     // Stores the new paragraphs
1801     wxRichTextFragment              m_newParagraphs;
1802
1803     // Stores the old paragraphs
1804     wxRichTextFragment              m_oldParagraphs;
1805
1806     // The affected range
1807     wxRichTextRange                 m_range;
1808
1809     // The insertion point for this command
1810     long                            m_position;
1811
1812     // Ignore 1st 'Do' operation because we already did it
1813     bool                            m_ignoreThis;
1814
1815     // The command identifier
1816     wxRichTextCommandId             m_cmdId;
1817 };
1818
1819 /*!
1820  * wxRichTextFileHandler
1821  * Base class for file handlers
1822  */
1823
1824 class WXDLLIMPEXP_RICHTEXT wxRichTextFileHandler: public wxObject
1825 {
1826     DECLARE_CLASS(wxRichTextFileHandler)
1827 public:
1828     wxRichTextFileHandler(const wxString& name = wxEmptyString, const wxString& ext = wxEmptyString, int type = 0)
1829         : m_name(name), m_extension(ext), m_type(type), m_visible(true)
1830         { }
1831
1832 #if wxUSE_STREAMS
1833     bool LoadFile(wxRichTextBuffer *buffer, wxInputStream& stream)
1834     { return DoLoadFile(buffer, stream); }
1835     bool SaveFile(wxRichTextBuffer *buffer, wxOutputStream& stream)
1836     { return DoSaveFile(buffer, stream); }
1837 #endif
1838
1839     bool LoadFile(wxRichTextBuffer *buffer, const wxString& filename);
1840     bool SaveFile(wxRichTextBuffer *buffer, const wxString& filename);
1841
1842     /// Can we handle this filename (if using files)? By default, checks the extension.
1843     virtual bool CanHandle(const wxString& filename) const;
1844
1845     /// Can we save using this handler?
1846     virtual bool CanSave() const { return false; }
1847
1848     /// Can we load using this handler?
1849     virtual bool CanLoad() const { return false; }
1850
1851     /// Should this handler be visible to the user?
1852     virtual bool IsVisible() const { return m_visible; }
1853     virtual void SetVisible(bool visible) { m_visible = visible; }
1854
1855     /// The name of the nandler
1856     void SetName(const wxString& name) { m_name = name; }
1857     wxString GetName() const { return m_name; }
1858
1859     /// The default extension to recognise
1860     void SetExtension(const wxString& ext) { m_extension = ext; }
1861     wxString GetExtension() const { return m_extension; }
1862
1863     /// The handler type
1864     void SetType(int type) { m_type = type; }
1865     int GetType() const { return m_type; }
1866
1867     /// Encoding to use when saving a file. If empty, a suitable encoding is chosen
1868     void SetEncoding(const wxString& encoding) { m_encoding = encoding; }
1869     const wxString& GetEncoding() const { return m_encoding; }
1870
1871 protected:
1872
1873 #if wxUSE_STREAMS
1874     virtual bool DoLoadFile(wxRichTextBuffer *buffer, wxInputStream& stream) = 0;
1875     virtual bool DoSaveFile(wxRichTextBuffer *buffer, wxOutputStream& stream) = 0;
1876 #endif
1877
1878     wxString  m_name;
1879     wxString  m_encoding;
1880     wxString  m_extension;
1881     int       m_type;
1882     bool      m_visible;
1883 };
1884
1885 /*!
1886  * wxRichTextPlainTextHandler
1887  * Plain text handler
1888  */
1889
1890 class WXDLLIMPEXP_RICHTEXT wxRichTextPlainTextHandler: public wxRichTextFileHandler
1891 {
1892     DECLARE_CLASS(wxRichTextPlainTextHandler)
1893 public:
1894     wxRichTextPlainTextHandler(const wxString& name = wxT("Text"), const wxString& ext = wxT("txt"), int type = wxRICHTEXT_TYPE_TEXT)
1895         : wxRichTextFileHandler(name, ext, type)
1896         { }
1897
1898     /// Can we save using this handler?
1899     virtual bool CanSave() const { return true; }
1900
1901     /// Can we load using this handler?
1902     virtual bool CanLoad() const { return true; }
1903
1904 protected:
1905
1906 #if wxUSE_STREAMS
1907     virtual bool DoLoadFile(wxRichTextBuffer *buffer, wxInputStream& stream);
1908     virtual bool DoSaveFile(wxRichTextBuffer *buffer, wxOutputStream& stream);
1909 #endif
1910
1911 };
1912
1913 /*!
1914  * Utilities
1915  *
1916  */
1917
1918 inline bool wxRichTextHasStyle(int flags, int style)
1919 {
1920     return ((flags & style) == style);
1921 }
1922
1923 /// Compare two attribute objects
1924 bool wxTextAttrEq(const wxTextAttrEx& attr1, const wxTextAttrEx& attr2);
1925 bool wxTextAttrEq(const wxTextAttr& attr1, const wxRichTextAttr& attr2);
1926
1927 /// Compare two attribute objects, but take into account the flags
1928 /// specifying attributes of interest.
1929 bool wxTextAttrEqPartial(const wxTextAttrEx& attr1, const wxTextAttrEx& attr2, int flags);
1930 bool wxTextAttrEqPartial(const wxTextAttrEx& attr1, const wxRichTextAttr& attr2, int flags);
1931
1932 /// Apply one style to another
1933 bool wxRichTextApplyStyle(wxTextAttrEx& destStyle, const wxTextAttrEx& style);
1934 bool wxRichTextApplyStyle(wxRichTextAttr& destStyle, const wxTextAttrEx& style);
1935 bool wxRichTextApplyStyle(wxTextAttrEx& destStyle, const wxRichTextAttr& style);
1936
1937 #endif
1938     // wxUSE_RICHTEXT
1939
1940 #endif
1941     // _WX_RICHTEXTBUFFER_H_