interface/wx/html/htmlcell.h

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        html/htmlcell.h
   3 // Purpose:     interface of wxHtml*Cell
   4 // Author:      wxWidgets team
   5 // Licence:     wxWindows licence
   6 /////////////////////////////////////////////////////////////////////////////
   7
   8
   9 /**
  10    @class wxHtmlRenderingStyle
  11
  12    wxHtmlSelection is data holder with information about text selection.
  13    Selection is defined by two positions (beginning and end of the selection)
  14    and two leaf(!) cells at these positions.
  15
  16    @library{wxhtml}
  17    @category{html}
  18 */
  19 class wxHtmlSelection
  20 {
  21 public:
  22     wxHtmlSelection();
  23
  24     // this version is used for the user selection defined with the mouse
  25     void Set(const wxPoint& fromPos, const wxHtmlCell *fromCell,
  26              const wxPoint& toPos, const wxHtmlCell *toCell);
  27     void Set(const wxHtmlCell *fromCell, const wxHtmlCell *toCell);
  28
  29     const wxHtmlCell *GetFromCell() const;
  30     const wxHtmlCell *GetToCell() const;
  31
  32     // these values are in absolute coordinates:
  33     const wxPoint& GetFromPos() const;
  34     const wxPoint& GetToPos() const;
  35
  36     // these are From/ToCell's private data
  37     void ClearFromToCharacterPos();
  38     bool AreFromToCharacterPosSet() const;
  39
  40     void SetFromCharacterPos (wxCoord pos);
  41     void SetToCharacterPos (wxCoord pos);
  42     wxCoord GetFromCharacterPos () const;
  43     wxCoord GetToCharacterPos () const;
  44
  45     bool IsEmpty() const;
  46 };
  47
  48
  49
  50 enum wxHtmlSelectionState
  51 {
  52     wxHTML_SEL_OUT,     // currently rendered cell is outside the selection
  53     wxHTML_SEL_IN,      // ... is inside selection
  54     wxHTML_SEL_CHANGING // ... is the cell on which selection state changes
  55 };
  56
  57
  58 /**
  59    @class wxHtmlRenderingState
  60
  61    Selection state is passed to wxHtmlCell::Draw so that it can render itself
  62    differently e.g. when inside text selection or outside it.
  63
  64    @library{wxhtml}
  65    @category{html}
  66 */
  67 class wxHtmlRenderingState
  68 {
  69 public:
  70     wxHtmlRenderingState();
  71
  72     void SetSelectionState(wxHtmlSelectionState s);
  73     wxHtmlSelectionState GetSelectionState() const;
  74
  75     void SetFgColour(const wxColour& c);
  76     const wxColour& GetFgColour() const;
  77     void SetBgColour(const wxColour& c);
  78     const wxColour& GetBgColour() const;
  79     void SetBgMode(int m);
  80     int GetBgMode() const;
  81 };
  82
  83
  84
  85 /**
  86     @class wxHtmlRenderingStyle
  87
  88     Allows HTML rendering customizations.
  89     This class is used when rendering wxHtmlCells as a callback.
  90
  91     @library{wxhtml}
  92     @category{html}
  93
  94     @see wxHtmlRenderingInfo
  95 */
  96 class wxHtmlRenderingStyle
  97 {
  98 public:
  99     /**
 100         Returns the colour to use for the selected text.
 101     */
 102     virtual wxColour GetSelectedTextColour(const wxColour& clr) = 0;
 103
 104     /**
 105         Returns the colour to use for the selected text's background.
 106     */
 107     virtual wxColour GetSelectedTextBgColour(const wxColour& clr) = 0;
 108 };
 109
 110
 111 /**
 112     @class wxHtmlRenderingInfo
 113
 114     This class contains information given to cells when drawing them.
 115     Contains rendering state, selection information and rendering style object
 116     that can be used to customize the output.
 117
 118     @library{wxhtml}
 119     @category{html}
 120
 121     @see @ref overview_html_cells, wxHtmlCell
 122 */
 123 class wxHtmlRenderingInfo
 124 {
 125 public:
 126     /**
 127         Default ctor.
 128     */
 129     wxHtmlRenderingInfo();
 130
 131     //@{
 132     /**
 133         Accessors.
 134     */
 135     void SetSelection(wxHtmlSelection *s);
 136     wxHtmlSelection *GetSelection() const;
 137
 138     void SetStyle(wxHtmlRenderingStyle *style);
 139     wxHtmlRenderingStyle& GetStyle();
 140
 141     wxHtmlRenderingState& GetState();
 142     //@}
 143 };
 144
 145
 146
 147 // Flags for wxHtmlCell::FindCellByPos
 148 enum
 149 {
 150     wxHTML_FIND_EXACT             = 1,
 151     wxHTML_FIND_NEAREST_BEFORE    = 2,
 152     wxHTML_FIND_NEAREST_AFTER     = 4
 153 };
 154
 155
 156 // Superscript/subscript/normal script mode of a cell
 157 enum wxHtmlScriptMode
 158 {
 159     wxHTML_SCRIPT_NORMAL,
 160     wxHTML_SCRIPT_SUB,
 161     wxHTML_SCRIPT_SUP
 162 };
 163
 164
 165 /**
 166     @class wxHtmlCell
 167
 168     Internal data structure. It represents fragments of parsed HTML page, the
 169     so-called @b cell - a word, picture, table, horizontal line and so on.
 170     It is used by wxHtmlWindow and wxHtmlWinParser to represent HTML page in memory.
 171
 172     You can divide cells into two groups : @e visible cells with non-zero width and
 173     height and @e helper cells (usually with zero width and height) that perform
 174     special actions such as color or font change.
 175
 176     @library{wxhtml}
 177     @category{html}
 178
 179     @see @ref overview_html_cells, wxHtmlContainerCell
 180 */
 181 class wxHtmlCell : public wxObject
 182 {
 183 public:
 184     /**
 185         Constructor.
 186     */
 187     wxHtmlCell();
 188
 189     /**
 190         This method is used to adjust pagebreak position.
 191         The first parameter is a variable that contains the y-coordinate of the page break
 192         (= horizontal line that should not be crossed by words, images etc.).
 193         If this cell cannot be divided into two pieces (each one on another page)
 194         then it either moves the pagebreak a few pixels up, if possible, or, if
 195         the cell cannot fit on the page at all, then the cell is forced to
 196         split unconditionally.
 197
 198         Returns @true if pagebreak was modified, @false otherwise.
 199
 200         @param pagebreak
 201             position in pixel of the pagebreak.
 202
 203         @param known_pagebreaks
 204             the list of the previous pagebreaks
 205
 206         @param pageHeight
 207             the height in pixel of the page drawable area
 208
 209         Usage:
 210         @code
 211         while (container->AdjustPagebreak(&p, kp, ph)) {}
 212         @endcode
 213
 214     */
 215     virtual bool AdjustPagebreak(int* pagebreak,
 216                                  const wxArrayInt& known_pagebreaks,
 217                                  int pageHeight) const;
 218
 219     /**
 220         Renders the cell.
 221
 222         @param dc
 223             Device context to which the cell is to be drawn.
 224         @param x,y
 225             Coordinates of parent's upper left corner (origin). You must
 226             add this to m_PosX,m_PosY when passing coordinates to dc's methods
 227             Example:
 228             @code
 229                 dc->DrawText("hello", x + m_PosX, y + m_PosY)
 230             @endcode
 231         @param view_y1
 232             y-coord of the first line visible in window.
 233             This is used to optimize rendering speed.
 234         @param view_y2
 235             y-coord of the last line visible in window.
 236             This is used to optimize rendering speed.
 237         @param info
 238             Additional information for the rendering of the cell.
 239     */
 240     virtual void Draw(wxDC& dc, int x, int y, int view_y1, int view_y2, wxHtmlRenderingInfo& info);
 241
 242     /**
 243         This method is called instead of Draw() when the cell is certainly out of
 244         the screen (and thus invisible). This is not nonsense - some tags (like
 245         wxHtmlColourCell or font setter) must be drawn even if they are invisible!
 246
 247         @param dc
 248             Device context to which the cell is to be drawn.
 249         @param x,y
 250             Coordinates of parent's upper left corner. You must
 251             add this to m_PosX,m_PosY when passing coordinates to dc's methods
 252             Example:
 253             @code
 254                 dc->DrawText("hello", x + m_PosX, y + m_PosY)
 255             @endcode
 256         @param info
 257             Additional information for the rendering of the cell.
 258     */
 259     virtual void DrawInvisible(wxDC& dc, int x , int y, wxHtmlRenderingInfo& info);
 260
 261     /**
 262         Returns pointer to itself if this cell matches condition (or if any of the
 263         cells following in the list matches), @NULL otherwise.
 264         (In other words if you call top-level container's Find() it will
 265         return pointer to the first cell that matches the condition)
 266
 267         It is recommended way how to obtain pointer to particular cell or
 268         to cell of some type (e.g. wxHtmlAnchorCell reacts on wxHTML_COND_ISANCHOR
 269         condition).
 270
 271         @param condition
 272             Unique integer identifier of condition
 273         @param param
 274             Optional parameters
 275     */
 276     virtual const wxHtmlCell* Find(int condition, const void* param) const;
 277
 278     /**
 279         Returns descent value of the cell (m_Descent member).
 280         See explanation:
 281         @image html htmlcell_descent.png
 282     */
 283     int GetDescent() const;
 284
 285     /**
 286         Returns pointer to the first cell in the list.
 287         You can then use child's GetNext() method to obtain pointer to the next
 288         cell in list.
 289
 290         @note This shouldn't be used by the end user. If you need some way of
 291               finding particular cell in the list, try Find() method instead.
 292     */
 293     virtual wxHtmlCell* GetFirstChild() const;
 294
 295     /**
 296         Returns height of the cell (m_Height member).
 297     */
 298     int GetHeight() const;
 299
 300     /**
 301         Returns unique cell identifier if there is any, the empty string otherwise.
 302     */
 303     const wxString& GetId() const;
 304
 305     /**
 306         Returns hypertext link if associated with this cell or @NULL otherwise.
 307         See wxHtmlLinkInfo. (Note: this makes sense only for visible tags).
 308
 309         @param x,y
 310             Coordinates of position where the user pressed mouse button.
 311             These coordinates are used e.g. by COLORMAP. Values are relative to the
 312             upper left corner of THIS cell (i.e. from 0 to m_Width or m_Height)
 313     */
 314     virtual wxHtmlLinkInfo* GetLink(int x = 0, int y = 0) const;
 315
 316     /**
 317         Returns cursor to show when mouse pointer is over the cell.
 318
 319         @param window
 320             interface to the parent HTML window
 321
 322         @see GetMouseCursorAt()
 323     */
 324     virtual wxCursor GetMouseCursor(wxHtmlWindowInterface* window) const;
 325
 326     /**
 327         Returns cursor to show when mouse pointer is over the specified point.
 328
 329         This function should be overridden instead of GetMouseCursorAt() if
 330         the cursor should depend on the exact position of the mouse in the
 331         window.
 332
 333         @param window
 334             interface to the parent HTML window
 335
 336         @since 3.0
 337      */
 338     virtual wxCursor GetMouseCursorAt(wxHtmlWindowInterface* window,
 339                                       const wxPoint& rePos) const;
 340
 341     /**
 342         Returns pointer to the next cell in list (see htmlcell.h if you're
 343         interested in details).
 344     */
 345     wxHtmlCell* GetNext() const;
 346
 347     /**
 348         Returns pointer to parent container.
 349     */
 350     wxHtmlContainerCell* GetParent() const;
 351
 352     /**
 353         Returns X position within parent (the value is relative to parent's
 354         upper left corner). The returned value is meaningful only if
 355         parent's Layout() was called before!
 356     */
 357     int GetPosX() const;
 358
 359     /**
 360         Returns Y position within parent (the value is relative to parent's
 361         upper left corner). The returned value is meaningful only if
 362         parent's Layout() was called before!
 363     */
 364     int GetPosY() const;
 365
 366     /**
 367         Returns width of the cell (m_Width member).
 368     */
 369     int GetWidth() const;
 370
 371     /**
 372         Layouts the cell.
 373
 374         This method performs two actions:
 375         -# adjusts the cell's width according to the fact that maximal possible
 376            width is @e w (this has sense when working with horizontal lines, tables etc.)
 377         -# prepares layout (=fill-in m_PosX, m_PosY (and sometimes m_Height) members)
 378            based on actual width @e w
 379
 380         It must be called before displaying cells structure because m_PosX and
 381         m_PosY are undefined (or invalid) before calling Layout().
 382     */
 383     virtual void Layout(int w);
 384
 385     /**
 386         This function is simple event handler.
 387         Each time the user clicks mouse button over a cell within wxHtmlWindow
 388         this method of that cell is called.
 389         Default behaviour is to call wxHtmlWindow::LoadPage.
 390
 391         @param window
 392             interface to the parent HTML window
 393         @param pos
 394             coordinates of mouse click (this is relative to cell's origin
 395         @param event
 396             mouse event that triggered the call
 397
 398         @return @true if a link was clicked, @false otherwise.
 399
 400         @since 2.7.0 (before OnMouseClick() method served a similar purpose).
 401
 402         @note
 403         If you need more "advanced" event handling you should use wxHtmlBinderCell instead.
 404     */
 405     virtual bool ProcessMouseClick(wxHtmlWindowInterface* window,
 406                                    const wxPoint& pos,
 407                                    const wxMouseEvent& event);
 408
 409     /**
 410         Sets unique cell identifier. Default value is no identifier, i.e. empty string.
 411     */
 412     void SetId(const wxString& id);
 413
 414     /**
 415         Sets the hypertext link associated with this cell.
 416         (Default value is wxHtmlLinkInfo("", "") (no link))
 417     */
 418     void SetLink(const wxHtmlLinkInfo& link);
 419
 420     /**
 421         Sets the next cell in the list. This shouldn't be called by user - it is
 422         to be used only by wxHtmlContainerCell::InsertCell.
 423     */
 424     void SetNext(wxHtmlCell* cell);
 425
 426     /**
 427         Sets parent container of this cell.
 428         This is called from wxHtmlContainerCell::InsertCell.
 429     */
 430     void SetParent(wxHtmlContainerCell* p);
 431
 432     /**
 433         Sets the cell's position within parent container.
 434     */
 435     virtual void SetPos(int x, int y);
 436 };
 437
 438
 439
 440 /**
 441     @class wxHtmlContainerCell
 442
 443     The wxHtmlContainerCell class is an implementation of a cell that may
 444     contain more cells in it. It is heavily used in the wxHTML layout algorithm.
 445
 446     @library{wxhtml}
 447     @category{html}
 448
 449     @see @ref overview_html_cells
 450 */
 451 class wxHtmlContainerCell : public wxHtmlCell
 452 {
 453 public:
 454     /**
 455         Constructor. @a parent is pointer to parent container or @NULL.
 456     */
 457     wxHtmlContainerCell(wxHtmlContainerCell* parent);
 458
 459     /**
 460         Returns container's horizontal alignment.
 461     */
 462     int GetAlignHor() const;
 463
 464     /**
 465         Returns container's vertical alignment.
 466     */
 467     int GetAlignVer() const;
 468
 469     /**
 470         Returns the background colour of the container or @c wxNullColour if no
 471         background colour is set.
 472     */
 473     wxColour GetBackgroundColour();
 474
 475     /**
 476         Returns the indentation. @a ind is one of the @b wxHTML_INDENT_* constants.
 477
 478         @note You must call GetIndentUnits() with same @a ind parameter in order
 479               to correctly interpret the returned integer value.
 480               It is NOT always in pixels!
 481     */
 482     int GetIndent(int ind) const;
 483
 484     /**
 485         Returns the units of indentation for @a ind where @a ind is one
 486         of the @b wxHTML_INDENT_* constants.
 487     */
 488     int GetIndentUnits(int ind) const;
 489
 490     /**
 491         Inserts a new cell into the container.
 492     */
 493     void InsertCell(wxHtmlCell* cell);
 494
 495     /**
 496         Sets the container's alignment (both horizontal and vertical) according to
 497         the values stored in @e tag. (Tags @c ALIGN parameter is extracted.)
 498         In fact it is only a front-end to SetAlignHor() and SetAlignVer().
 499     */
 500     void SetAlign(const wxHtmlTag& tag);
 501
 502     /**
 503         Sets the container's @e horizontal alignment.
 504         During wxHtmlCell::Layout each line is aligned according to @a al value.
 505
 506         @param al
 507             new horizontal alignment. May be one of these values:
 508             - wxHTML_ALIGN_LEFT: lines are left-aligned (default)
 509             - wxHTML_ALIGN_JUSTIFY: lines are justified
 510             - wxHTML_ALIGN_CENTER: lines are centered
 511             - wxHTML_ALIGN_RIGHT: lines are right-aligned
 512     */
 513     void SetAlignHor(int al);
 514
 515     /**
 516         Sets the container's @e vertical alignment. This is per-line alignment!
 517
 518         @param al
 519             new vertical alignment. May be one of these values:
 520             - wxHTML_ALIGN_BOTTOM: cells are over the line (default)
 521             - wxHTML_ALIGN_CENTER: cells are centered on line
 522             - wxHTML_ALIGN_TOP: cells are under the line
 523
 524         @image html htmlcontcell_alignv.png
 525     */
 526     void SetAlignVer(int al);
 527
 528     /**
 529         Sets the background colour for this container.
 530     */
 531     void SetBackgroundColour(const wxColour& clr);
 532
 533     /**
 534         Sets the border (frame) colours. A border is a rectangle around the container.
 535
 536         @param clr1
 537             Colour of top and left lines
 538         @param clr2
 539             Colour of bottom and right lines
 540         @param border
 541             Size of the border in pixels
 542     */
 543     void SetBorder(const wxColour& clr1, const wxColour& clr2, int border = 1);
 544
 545     /**
 546         Sets the indentation (free space between borders of container and subcells).
 547
 548         @image html htmlcontcell_indent.png
 549
 550         @param i
 551             Indentation value.
 552         @param what
 553             Determines which of the four borders we're setting. It is OR
 554             combination of following constants:
 555             - wxHTML_INDENT_TOP: top border
 556             - wxHTML_INDENT_BOTTOM: bottom
 557             - wxHTML_INDENT_LEFT: left
 558             - wxHTML_INDENT_RIGHT: right
 559             - wxHTML_INDENT_HORIZONTAL: left and right
 560             - wxHTML_INDENT_VERTICAL: top and bottom
 561             - wxHTML_INDENT_ALL: all 4 borders
 562         @param units
 563             Units of i. This parameter affects interpretation of value.
 564             - wxHTML_UNITS_PIXELS: @a i is number of pixels
 565             - wxHTML_UNITS_PERCENT: @a i is interpreted as percents of width
 566                                     of parent container
 567     */
 568     void SetIndent(int i, int what, int units = wxHTML_UNITS_PIXELS);
 569
 570     /**
 571         Sets minimal height of the container.
 572         When container's wxHtmlCell::Layout is called, m_Height is set depending
 573         on layout of subcells to the height of area covered by layed-out subcells.
 574         Calling this method guarantees you that the height of container is never
 575         smaller than @a h - even if the subcells cover much smaller area.
 576
 577         @param h
 578             The minimal height.
 579         @param align
 580             If height of the container is lower than the minimum height, empty space
 581             must be inserted somewhere in order to ensure minimal height.
 582             This parameter is one of @c wxHTML_ALIGN_TOP, @c wxHTML_ALIGN_BOTTOM,
 583             @c wxHTML_ALIGN_CENTER. It refers to the contents, not to the
 584             empty place.
 585     */
 586     void SetMinHeight(int h, int align = wxHTML_ALIGN_TOP);
 587
 588     /**
 589         Sets floating width adjustment.
 590
 591         The normal behaviour of container is that its width is the same as the width of
 592         parent container (and thus you can have only one sub-container per line).
 593         You can change this by setting the floating width adjustment.
 594
 595         @param w
 596             Width of the container. If the value is negative it means
 597             complement to full width of parent container.
 598             E.g. @code SetWidthFloat(-50, wxHTML_UNITS_PIXELS) @endcode sets the
 599             width of container to parent's width minus 50 pixels. This is useful when
 600             creating tables - you can call SetWidthFloat(50) and SetWidthFloat(-50).
 601         @param units
 602             Units of w This parameter affects the interpretation of  value.
 603             - wxHTML_UNITS_PIXELS: @a w is number of pixels
 604             - wxHTML_UNITS_PERCENT: @a w is interpreted as percents of width
 605                                     of parent container
 606     */
 607     void SetWidthFloat(int w, int units);
 608
 609     /**
 610         Sets floating width adjustment.
 611
 612         The normal behaviour of container is that its width is the same as the width of
 613         parent container (and thus you can have only one sub-container per line).
 614         You can change this by setting the floating width adjustment.
 615
 616         @param tag
 617             In the second version of method, @a w and @a units info is extracted
 618             from tag's WIDTH parameter.
 619         @param pixel_scale
 620             This is number of real pixels that equals to 1 HTML pixel.
 621     */
 622     void SetWidthFloat(const wxHtmlTag& tag,
 623                        double pixel_scale = 1.0);
 624 };
 625
 626
 627
 628 /**
 629     @class wxHtmlLinkInfo
 630
 631     This class stores all necessary information about hypertext links
 632     (as represented by \<A\> tag in HTML documents).
 633     In current implementation it stores URL and target frame name.
 634
 635     @note Frames are not currently supported by wxHTML!
 636
 637     @library{wxhtml}
 638     @category{html}
 639 */
 640 class wxHtmlLinkInfo : public wxObject
 641 {
 642 public:
 643     /**
 644         Default ctor.
 645     */
 646     wxHtmlLinkInfo();
 647
 648     /**
 649         Construct hypertext link from HREF (aka URL) and TARGET (name of target frame).
 650     */
 651     wxHtmlLinkInfo(const wxString& href,
 652                    const wxString& target = wxEmptyString);
 653
 654     /**
 655         Return pointer to event that generated OnLinkClicked() event.
 656         Valid only within wxHtmlWindow::OnLinkClicked, @NULL otherwise.
 657     */
 658     const wxMouseEvent* GetEvent() const;
 659
 660     /**
 661         Return @e HREF value of the \<A\> tag.
 662     */
 663     wxString GetHref() const;
 664
 665     /**
 666         Return pointer to the cell that was clicked.
 667         Valid only within wxHtmlWindow::OnLinkClicked, @NULL otherwise.
 668     */
 669     const wxHtmlCell* GetHtmlCell() const;
 670
 671     /**
 672         Return @e TARGET value of the \<A\> tag (this value is used to specify
 673         in which frame should be the page pointed by @ref GetHref() Href opened).
 674     */
 675     wxString GetTarget() const;
 676 };
 677
 678 /**
 679     @class wxHtmlColourCell
 680
 681     This cell changes the colour of either the background or the foreground.
 682
 683     @library{wxhtml}
 684     @category{html}
 685 */
 686 class wxHtmlColourCell : public wxHtmlCell
 687 {
 688 public:
 689     /**
 690         Constructor.
 691
 692         @param clr
 693             The color
 694         @param flags
 695             Can be one of following:
 696             - wxHTML_CLR_FOREGROUND: change color of text
 697             - wxHTML_CLR_BACKGROUND: change background color
 698     */
 699     wxHtmlColourCell(const wxColour& clr, int flags = wxHTML_CLR_FOREGROUND);
 700 };
 701
 702
 703
 704 /**
 705     @class wxHtmlWidgetCell
 706
 707     wxHtmlWidgetCell is a class that provides a connection between HTML cells and
 708     widgets (an object derived from wxWindow).
 709     You can use it to display things like forms, input boxes etc. in an HTML window.
 710
 711     wxHtmlWidgetCell takes care of resizing and moving window.
 712
 713     @library{wxhtml}
 714     @category{html}
 715 */
 716 class wxHtmlWidgetCell : public wxHtmlCell
 717 {
 718 public:
 719     /**
 720         Constructor.
 721
 722         @param wnd
 723             Connected window. It is parent window @b must be the wxHtmlWindow object
 724             within which it is displayed!
 725         @param w
 726             Floating width. If non-zero width of wnd window is adjusted so that it is
 727             always w percents of parent container's width. (For example w = 100 means
 728             that the window will always have same width as parent container).
 729     */
 730     wxHtmlWidgetCell(wxWindow* wnd, int w = 0);
 731 };
 732
 733
 734
 735 /**
 736     @class wxHtmlWordCell
 737
 738     This html cell represents a single word or text fragment in the document stream.
 739
 740     @library{wxhtml}
 741     @category{html}
 742 */
 743 class wxHtmlWordCell : public wxHtmlCell
 744 {
 745 public:
 746     wxHtmlWordCell(const wxString& word, const wxDC& dc);
 747 };
 748
 749
 750 /**
 751     @class wxHtmlWordWithTabsCell
 752
 753     wxHtmlWordCell is a specialization for storing text fragments with
 754     embedded tab characters.
 755
 756     @library{wxhtml}
 757     @category{html}
 758 */
 759 class wxHtmlWordWithTabsCell : public wxHtmlWordCell
 760 {
 761 public:
 762     wxHtmlWordWithTabsCell(const wxString& word,
 763                            const wxString& wordOrig,
 764                            size_t linepos,
 765                            const wxDC& dc);
 766 };
 767
 768
 769 /**
 770     @class wxHtmlFontCell
 771
 772     This cell represents a font change in the document stream.
 773
 774     @library{wxhtml}
 775     @category{html}
 776 */
 777 class wxHtmlFontCell : public wxHtmlCell
 778 {
 779 public:
 780     wxHtmlFontCell(wxFont *font);
 781 };