include/wx/html/htmlcell.h

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        htmlcell.h
   3 // Purpose:     wxHtmlCell class is used by wxHtmlWindow/wxHtmlWinParser
   4 //              as a basic visual element of HTML page
   5 // Author:      Vaclav Slavik
   6 // RCS-ID:      $Id$
   7 // Copyright:   (c) 1999-2003 Vaclav Slavik
   8 // Licence:     wxWindows licence
   9 /////////////////////////////////////////////////////////////////////////////
  10
  11 #ifndef _WX_HTMLCELL_H_
  12 #define _WX_HTMLCELL_H_
  13
  14 #include "wx/defs.h"
  15
  16 #if wxUSE_HTML
  17
  18 #include "wx/html/htmltag.h"
  19 #include "wx/html/htmldefs.h"
  20 #include "wx/window.h"
  21
  22
  23 class WXDLLIMPEXP_HTML wxHtmlLinkInfo;
  24 class WXDLLIMPEXP_HTML wxHtmlCell;
  25 class WXDLLIMPEXP_HTML wxHtmlContainerCell;
  26
  27
  28 // wxHtmlSelection is data holder with information about text selection.
  29 // Selection is defined by two positions (beginning and end of the selection)
  30 // and two leaf(!) cells at these positions.
  31 class WXDLLIMPEXP_HTML wxHtmlSelection
  32 {
  33 public:
  34     wxHtmlSelection()
  35         : m_fromPos(wxDefaultPosition), m_toPos(wxDefaultPosition),
  36           m_fromPrivPos(wxDefaultPosition), m_toPrivPos(wxDefaultPosition),
  37           m_fromCell(NULL), m_toCell(NULL) {}
  38
  39     void Set(const wxPoint& fromPos, const wxHtmlCell *fromCell,
  40              const wxPoint& toPos, const wxHtmlCell *toCell);
  41     void Set(const wxHtmlCell *fromCell, const wxHtmlCell *toCell);
  42
  43     const wxHtmlCell *GetFromCell() const { return m_fromCell; }
  44     const wxHtmlCell *GetToCell() const { return m_toCell; }
  45
  46     // these values are in absolute coordinates:
  47     const wxPoint& GetFromPos() const { return m_fromPos; }
  48     const wxPoint& GetToPos() const { return m_toPos; }
  49
  50     // these are From/ToCell's private data
  51     const wxPoint& GetFromPrivPos() const { return m_fromPrivPos; }
  52     const wxPoint& GetToPrivPos() const { return m_toPrivPos; }
  53     void SetFromPrivPos(const wxPoint& pos) { m_fromPrivPos = pos; }
  54     void SetToPrivPos(const wxPoint& pos) { m_toPrivPos = pos; }
  55     void ClearPrivPos() { m_toPrivPos = m_fromPrivPos = wxDefaultPosition; }
  56
  57     bool IsEmpty() const
  58         { return m_fromPos == wxDefaultPosition &&
  59                  m_toPos == wxDefaultPosition; }
  60
  61 private:
  62     wxPoint m_fromPos, m_toPos;
  63     wxPoint m_fromPrivPos, m_toPrivPos;
  64     const wxHtmlCell *m_fromCell, *m_toCell;
  65 };
  66
  67
  68
  69 enum wxHtmlSelectionState
  70 {
  71     wxHTML_SEL_OUT,     // currently rendered cell is outside the selection
  72     wxHTML_SEL_IN,      // ... is inside selection
  73     wxHTML_SEL_CHANGING // ... is the cell on which selection state changes
  74 };
  75
  76 // Selection state is passed to wxHtmlCell::Draw so that it can render itself
  77 // differently e.g. when inside text selection or outside it.
  78 class WXDLLIMPEXP_HTML wxHtmlRenderingState
  79 {
  80 public:
  81     wxHtmlRenderingState() : m_selState(wxHTML_SEL_OUT) {}
  82
  83     void SetSelectionState(wxHtmlSelectionState s) { m_selState = s; }
  84     wxHtmlSelectionState GetSelectionState() const { return m_selState; }
  85
  86     void SetFgColour(const wxColour& c) { m_fgColour = c; }
  87     const wxColour& GetFgColour() const { return m_fgColour; }
  88     void SetBgColour(const wxColour& c) { m_bgColour = c; }
  89     const wxColour& GetBgColour() const { return m_bgColour; }
  90
  91 private:
  92     wxHtmlSelectionState  m_selState;
  93     wxColour              m_fgColour, m_bgColour;
  94 };
  95
  96
  97 // HTML rendering customization. This class is used when rendering wxHtmlCells
  98 // as a callback:
  99 class WXDLLIMPEXP_HTML wxHtmlRenderingStyle
 100 {
 101 public:
 102     virtual ~wxHtmlRenderingStyle() {}
 103     virtual wxColour GetSelectedTextColour(const wxColour& clr) = 0;
 104     virtual wxColour GetSelectedTextBgColour(const wxColour& clr) = 0;
 105 };
 106
 107 // Standard style:
 108 class WXDLLIMPEXP_HTML wxDefaultHtmlRenderingStyle : public wxHtmlRenderingStyle
 109 {
 110 public:
 111     virtual wxColour GetSelectedTextColour(const wxColour& clr);
 112     virtual wxColour GetSelectedTextBgColour(const wxColour& clr);
 113 };
 114
 115
 116 // Information given to cells when drawing them. Contains rendering state,
 117 // selection information and rendering style object that can be used to
 118 // customize the output.
 119 class WXDLLIMPEXP_HTML wxHtmlRenderingInfo
 120 {
 121 public:
 122     wxHtmlRenderingInfo() : m_selection(NULL), m_style(NULL) {}
 123
 124     void SetSelection(wxHtmlSelection *s) { m_selection = s; }
 125     wxHtmlSelection *GetSelection() const { return m_selection; }
 126
 127     void SetStyle(wxHtmlRenderingStyle *style) { m_style = style; }
 128     wxHtmlRenderingStyle& GetStyle() { return *m_style; }
 129
 130     wxHtmlRenderingState& GetState() { return m_state; }
 131
 132 protected:
 133     wxHtmlSelection      *m_selection;
 134     wxHtmlRenderingStyle *m_style;
 135     wxHtmlRenderingState m_state;
 136 };
 137
 138
 139 // Flags for wxHtmlCell::FindCellByPos
 140 enum
 141 {
 142     wxHTML_FIND_EXACT             = 1,
 143     wxHTML_FIND_NEAREST_BEFORE    = 2,
 144     wxHTML_FIND_NEAREST_AFTER     = 4
 145 };
 146
 147
 148
 149
 150 // ---------------------------------------------------------------------------
 151 // wxHtmlCell
 152 //                  Internal data structure. It represents fragments of parsed
 153 //                  HTML page - a word, picture, table, horizontal line and so
 154 //                  on.  It is used by wxHtmlWindow to represent HTML page in
 155 //                  memory.
 156 // ---------------------------------------------------------------------------
 157
 158
 159 class WXDLLIMPEXP_HTML wxHtmlCell : public wxObject
 160 {
 161 public:
 162     wxHtmlCell();
 163     virtual ~wxHtmlCell();
 164
 165     void SetParent(wxHtmlContainerCell *p) {m_Parent = p;}
 166     wxHtmlContainerCell *GetParent() const {return m_Parent;}
 167
 168     int GetPosX() const {return m_PosX;}
 169     int GetPosY() const {return m_PosY;}
 170     int GetWidth() const {return m_Width;}
 171
 172     // Returns the maximum possible length of the cell.
 173     // Call Layout at least once before using GetMaxTotalWidth()
 174     virtual int GetMaxTotalWidth() const { return m_Width; }
 175
 176     int GetHeight() const {return m_Height;}
 177     int GetDescent() const {return m_Descent;}
 178
 179     // Formatting cells are not visible on the screen, they only alter
 180     // renderer's state.
 181     bool IsFormattingCell() const { return m_Width == 0 && m_Height == 0; }
 182
 183     const wxString& GetId() const { return m_id; }
 184     void SetId(const wxString& id) { m_id = id; }
 185
 186     // returns the link associated with this cell. The position is position
 187     // within the cell so it varies from 0 to m_Width, from 0 to m_Height
 188     virtual wxHtmlLinkInfo* GetLink(int WXUNUSED(x) = 0,
 189                                     int WXUNUSED(y) = 0) const
 190         { return m_Link; }
 191
 192     // Returns cursor to be used when mouse is over the cell:
 193     virtual wxCursor GetCursor() const;
 194
 195     // return next cell among parent's cells
 196     wxHtmlCell *GetNext() const {return m_Next;}
 197     // returns first child cell (if there are any, i.e. if this is container):
 198     virtual wxHtmlCell* GetFirstChild() const { return NULL; }
 199
 200     // members writing methods
 201     virtual void SetPos(int x, int y) {m_PosX = x, m_PosY = y;}
 202     void SetLink(const wxHtmlLinkInfo& link);
 203     void SetNext(wxHtmlCell *cell) {m_Next = cell;}
 204
 205     // 1. adjust cell's width according to the fact that maximal possible width
 206     //    is w.  (this has sense when working with horizontal lines, tables
 207     //    etc.)
 208     // 2. prepare layout (=fill-in m_PosX, m_PosY (and sometime m_Height)
 209     //    members) = place items to fit window, according to the width w
 210     virtual void Layout(int w);
 211
 212     // renders the cell
 213     virtual void Draw(wxDC& WXUNUSED(dc),
 214                       int WXUNUSED(x), int WXUNUSED(y),
 215                       int WXUNUSED(view_y1), int WXUNUSED(view_y2),
 216                       wxHtmlRenderingInfo& WXUNUSED(info)) {}
 217
 218     // proceed drawing actions in case the cell is not visible (scrolled out of
 219     // screen).  This is needed to change fonts, colors and so on.
 220     virtual void DrawInvisible(wxDC& WXUNUSED(dc),
 221                                int WXUNUSED(x), int WXUNUSED(y),
 222                                wxHtmlRenderingInfo& WXUNUSED(info)) {}
 223
 224     // This method returns pointer to the FIRST cell for that
 225     // the condition
 226     // is true. It first checks if the condition is true for this
 227     // cell and then calls m_Next->Find(). (Note: it checks
 228     // all subcells if the cell is container)
 229     // Condition is unique condition identifier (see htmldefs.h)
 230     // (user-defined condition IDs should start from 10000)
 231     // and param is optional parameter
 232     // Example : m_Cell->Find(wxHTML_COND_ISANCHOR, "news");
 233     //   returns pointer to anchor news
 234     virtual const wxHtmlCell* Find(int condition, const void* param) const;
 235
 236     // This function is called when mouse button is clicked over the cell.
 237     //
 238     // Parent is pointer to wxHtmlWindow that generated the event
 239     // HINT: if this handling is not enough for you you should use
 240     //       wxHtmlWidgetCell
 241     virtual void OnMouseClick(wxWindow *parent, int x, int y, const wxMouseEvent& event);
 242
 243     // This method used to adjust pagebreak position. The parameter is variable
 244     // that contains y-coordinate of page break (= horizontal line that should
 245     // not be crossed by words, images etc.). If this cell cannot be divided
 246     // into two pieces (each one on another page) then it moves the pagebreak
 247     // few pixels up.
 248     //
 249     // Returned value : true if pagebreak was modified, false otherwise
 250     // Usage : while (container->AdjustPagebreak(&p)) {}
 251     virtual bool AdjustPagebreak(int *pagebreak,
 252                                  int *known_pagebreaks = NULL,
 253                                  int number_of_pages = 0) const;
 254
 255     // Sets cell's behaviour on pagebreaks (see AdjustPagebreak). Default
 256     // is true - the cell can be split on two pages
 257     void SetCanLiveOnPagebreak(bool can) { m_CanLiveOnPagebreak = can; }
 258
 259     // Can the line be broken before this cell?
 260     virtual bool IsLinebreakAllowed() const
 261         { return !IsFormattingCell(); }
 262
 263     // Returns true for simple == terminal cells, i.e. not composite ones.
 264     // This if for internal usage only and may disappear in future versions!
 265     virtual bool IsTerminalCell() const { return true; }
 266
 267     // Find a cell inside this cell positioned at the given coordinates
 268     // (relative to this's positions). Returns NULL if no such cell exists.
 269     // The flag can be used to specify whether to look for terminal or
 270     // nonterminal cells or both. In either case, returned cell is deepest
 271     // cell in cells tree that contains [x,y].
 272     virtual wxHtmlCell *FindCellByPos(wxCoord x, wxCoord y,
 273                                   unsigned flags = wxHTML_FIND_EXACT) const;
 274
 275     // Returns absolute position of the cell on HTML canvas
 276     wxPoint GetAbsPos() const;
 277
 278     // Returns first (last) terminal cell inside this cell. It may return NULL,
 279     // but it is rare -- only if there are no terminals in the tree.
 280     virtual wxHtmlCell *GetFirstTerminal() const
 281         { return wxConstCast(this, wxHtmlCell); }
 282     virtual wxHtmlCell *GetLastTerminal() const
 283         { return wxConstCast(this, wxHtmlCell); }
 284
 285     // Returns cell's depth, i.e. how far under the root cell it is
 286     // (if it is the root, depth is 0)
 287     unsigned GetDepth() const;
 288
 289     // Returns true if the cell appears before 'cell' in natural order of
 290     // cells (= as they are read). If cell A is (grand)parent of cell B,
 291     // then both A.IsBefore(B) and B.IsBefore(A) always return true.
 292     bool IsBefore(wxHtmlCell *cell) const;
 293
 294     // Converts the cell into text representation. If sel != NULL then
 295     // only part of the cell inside the selection is converted.
 296     virtual wxString ConvertToText(wxHtmlSelection *WXUNUSED(sel)) const
 297         { return wxEmptyString; }
 298
 299 protected:
 300     wxHtmlCell *m_Next;
 301             // pointer to the next cell
 302     wxHtmlContainerCell *m_Parent;
 303             // pointer to parent cell
 304     long m_Width, m_Height, m_Descent;
 305             // dimensions of fragment
 306             // m_Descent is used to position text&images..
 307     long m_PosX, m_PosY;
 308             // position where the fragment is drawn
 309     wxHtmlLinkInfo *m_Link;
 310             // destination address if this fragment is hypertext link, NULL otherwise
 311     bool m_CanLiveOnPagebreak;
 312             // true if this cell can be placed on pagebreak, false otherwise
 313     wxString m_id;
 314             // unique identifier of the cell, generated from "id" property of tags
 315
 316     DECLARE_ABSTRACT_CLASS(wxHtmlCell)
 317     DECLARE_NO_COPY_CLASS(wxHtmlCell)
 318 };
 319
 320
 321
 322
 323 // ----------------------------------------------------------------------------
 324 // Inherited cells:
 325 // ----------------------------------------------------------------------------
 326
 327
 328 // ----------------------------------------------------------------------------
 329 // wxHtmlWordCell
 330 //                  Single word in input stream.
 331 // ----------------------------------------------------------------------------
 332
 333 class WXDLLIMPEXP_HTML wxHtmlWordCell : public wxHtmlCell
 334 {
 335 public:
 336     wxHtmlWordCell(const wxString& word, const wxDC& dc);
 337     void Draw(wxDC& dc, int x, int y, int view_y1, int view_y2,
 338               wxHtmlRenderingInfo& info);
 339     wxCursor GetCursor() const;
 340     wxString ConvertToText(wxHtmlSelection *sel) const;
 341     bool IsLinebreakAllowed() const { return m_allowLinebreak; }
 342
 343     void SetPreviousWord(wxHtmlWordCell *cell);
 344
 345 protected:
 346     void SetSelectionPrivPos(const wxDC& dc, wxHtmlSelection *s) const;
 347     void Split(const wxDC& dc,
 348                const wxPoint& selFrom, const wxPoint& selTo,
 349                unsigned& pos1, unsigned& pos2) const;
 350
 351     wxString m_Word;
 352     bool     m_allowLinebreak;
 353
 354     DECLARE_ABSTRACT_CLASS(wxHtmlWordCell)
 355     DECLARE_NO_COPY_CLASS(wxHtmlWordCell)
 356 };
 357
 358
 359
 360
 361
 362 // Container contains other cells, thus forming tree structure of rendering
 363 // elements. Basic code of layout algorithm is contained in this class.
 364 class WXDLLIMPEXP_HTML wxHtmlContainerCell : public wxHtmlCell
 365 {
 366 public:
 367     wxHtmlContainerCell(wxHtmlContainerCell *parent);
 368     ~wxHtmlContainerCell();
 369
 370     virtual void Layout(int w);
 371     virtual void Draw(wxDC& dc, int x, int y, int view_y1, int view_y2,
 372                       wxHtmlRenderingInfo& info);
 373     virtual void DrawInvisible(wxDC& dc, int x, int y,
 374                                wxHtmlRenderingInfo& info);
 375     virtual bool AdjustPagebreak(int *pagebreak, int *known_pagebreaks = NULL, int number_of_pages = 0) const;
 376
 377     // insert cell at the end of m_Cells list
 378     void InsertCell(wxHtmlCell *cell);
 379
 380     // sets horizontal/vertical alignment
 381     void SetAlignHor(int al) {m_AlignHor = al; m_LastLayout = -1;}
 382     int GetAlignHor() const {return m_AlignHor;}
 383     void SetAlignVer(int al) {m_AlignVer = al; m_LastLayout = -1;}
 384     int GetAlignVer() const {return m_AlignVer;}
 385
 386     // sets left-border indentation. units is one of wxHTML_UNITS_* constants
 387     // what is combination of wxHTML_INDENT_*
 388     void SetIndent(int i, int what, int units = wxHTML_UNITS_PIXELS);
 389     // returns the indentation. ind is one of wxHTML_INDENT_* constants
 390     int GetIndent(int ind) const;
 391     // returns type of value returned by GetIndent(ind)
 392     int GetIndentUnits(int ind) const;
 393
 394     // sets alignment info based on given tag's params
 395     void SetAlign(const wxHtmlTag& tag);
 396     // sets floating width adjustment
 397     // (examples : 32 percent of parent container,
 398     // -15 pixels percent (this means 100 % - 15 pixels)
 399     void SetWidthFloat(int w, int units) {m_WidthFloat = w; m_WidthFloatUnits = units; m_LastLayout = -1;}
 400     void SetWidthFloat(const wxHtmlTag& tag, double pixel_scale = 1.0);
 401     // sets minimal height of this container.
 402     void SetMinHeight(int h, int align = wxHTML_ALIGN_TOP) {m_MinHeight = h; m_MinHeightAlign = align; m_LastLayout = -1;}
 403
 404     void SetBackgroundColour(const wxColour& clr) {m_UseBkColour = true; m_BkColour = clr;}
 405     // returns background colour (of wxNullColour if none set), so that widgets can
 406     // adapt to it:
 407     wxColour GetBackgroundColour();
 408     void SetBorder(const wxColour& clr1, const wxColour& clr2) {m_UseBorder = true; m_BorderColour1 = clr1, m_BorderColour2 = clr2;}
 409     virtual wxHtmlLinkInfo* GetLink(int x = 0, int y = 0) const;
 410     virtual const wxHtmlCell* Find(int condition, const void* param) const;
 411     virtual void OnMouseClick(wxWindow *parent, int x, int y, const wxMouseEvent& event);
 412
 413     virtual wxHtmlCell* GetFirstChild() const { return m_Cells; }
 414 #if WXWIN_COMPATIBILITY_2_4
 415     wxDEPRECATED( wxHtmlCell* GetFirstCell() const );
 416 #endif
 417
 418     // see comment in wxHtmlCell about this method
 419     virtual bool IsTerminalCell() const { return false; }
 420
 421     virtual wxHtmlCell *FindCellByPos(wxCoord x, wxCoord y,
 422                                   unsigned flags = wxHTML_FIND_EXACT) const;
 423
 424     virtual wxHtmlCell *GetFirstTerminal() const;
 425     virtual wxHtmlCell *GetLastTerminal() const;
 426
 427
 428     // Removes indentation on top or bottom of the container (i.e. above or
 429     // below first/last terminal cell). For internal use only.
 430     void RemoveExtraSpacing(bool top, bool bottom);
 431
 432     // Returns the maximum possible length of the container.
 433     // Call Layout at least once before using GetMaxTotalWidth()
 434     virtual int GetMaxTotalWidth() const { return m_MaxTotalWidth; }
 435
 436 protected:
 437     void UpdateRenderingStatePre(wxHtmlRenderingInfo& info,
 438                                  wxHtmlCell *cell) const;
 439     void UpdateRenderingStatePost(wxHtmlRenderingInfo& info,
 440                                   wxHtmlCell *cell) const;
 441
 442 protected:
 443     int m_IndentLeft, m_IndentRight, m_IndentTop, m_IndentBottom;
 444             // indentation of subcells. There is always m_Indent pixels
 445             // big space between given border of the container and the subcells
 446             // it m_Indent < 0 it is in PERCENTS, otherwise it is in pixels
 447     int m_MinHeight, m_MinHeightAlign;
 448         // minimal height.
 449     wxHtmlCell *m_Cells, *m_LastCell;
 450             // internal cells, m_Cells points to the first of them, m_LastCell to the last one.
 451             // (LastCell is needed only to speed-up InsertCell)
 452     int m_AlignHor, m_AlignVer;
 453             // alignment horizontal and vertical (left, center, right)
 454     int m_WidthFloat, m_WidthFloatUnits;
 455             // width float is used in adjustWidth
 456     bool m_UseBkColour;
 457     wxColour m_BkColour;
 458             // background color of this container
 459     bool m_UseBorder;
 460     wxColour m_BorderColour1, m_BorderColour2;
 461             // borders color of this container
 462     int m_LastLayout;
 463             // if != -1 then call to Layout may be no-op
 464             // if previous call to Layout has same argument
 465     int m_MaxTotalWidth;
 466             // Maximum possible length if ignoring line wrap
 467
 468
 469     DECLARE_ABSTRACT_CLASS(wxHtmlContainerCell)
 470     DECLARE_NO_COPY_CLASS(wxHtmlContainerCell)
 471 };
 472
 473 #if WXWIN_COMPATIBILITY_2_4
 474 inline wxHtmlCell* wxHtmlContainerCell::GetFirstCell() const
 475     { return GetFirstChild(); }
 476 #endif
 477
 478
 479
 480
 481 // ---------------------------------------------------------------------------
 482 // wxHtmlColourCell
 483 //                  Color changer.
 484 // ---------------------------------------------------------------------------
 485
 486 class WXDLLIMPEXP_HTML wxHtmlColourCell : public wxHtmlCell
 487 {
 488 public:
 489     wxHtmlColourCell(const wxColour& clr, int flags = wxHTML_CLR_FOREGROUND) : wxHtmlCell() {m_Colour = clr; m_Flags = flags;}
 490     virtual void Draw(wxDC& dc, int x, int y, int view_y1, int view_y2,
 491                       wxHtmlRenderingInfo& info);
 492     virtual void DrawInvisible(wxDC& dc, int x, int y,
 493                                wxHtmlRenderingInfo& info);
 494
 495 protected:
 496     wxColour m_Colour;
 497     unsigned m_Flags;
 498
 499     DECLARE_ABSTRACT_CLASS(wxHtmlColourCell)
 500     DECLARE_NO_COPY_CLASS(wxHtmlColourCell)
 501 };
 502
 503
 504
 505
 506 //--------------------------------------------------------------------------------
 507 // wxHtmlFontCell
 508 //                  Sets actual font used for text rendering
 509 //--------------------------------------------------------------------------------
 510
 511 class WXDLLIMPEXP_HTML wxHtmlFontCell : public wxHtmlCell
 512 {
 513 public:
 514     wxHtmlFontCell(wxFont *font) : wxHtmlCell() { m_Font = (*font); }
 515     virtual void Draw(wxDC& dc, int x, int y, int view_y1, int view_y2,
 516                       wxHtmlRenderingInfo& info);
 517     virtual void DrawInvisible(wxDC& dc, int x, int y,
 518                                wxHtmlRenderingInfo& info);
 519
 520 protected:
 521     wxFont m_Font;
 522
 523     DECLARE_ABSTRACT_CLASS(wxHtmlFontCell)
 524     DECLARE_NO_COPY_CLASS(wxHtmlFontCell)
 525 };
 526
 527
 528
 529
 530
 531
 532 //--------------------------------------------------------------------------------
 533 // wxHtmlwidgetCell
 534 //                  This cell is connected with wxWindow object
 535 //                  You can use it to insert windows into HTML page
 536 //                  (buttons, input boxes etc.)
 537 //--------------------------------------------------------------------------------
 538
 539 class WXDLLIMPEXP_HTML wxHtmlWidgetCell : public wxHtmlCell
 540 {
 541 public:
 542     // !!! wnd must have correct parent!
 543     // if w != 0 then the m_Wnd has 'floating' width - it adjust
 544     // it's width according to parent container's width
 545     // (w is percent of parent's width)
 546     wxHtmlWidgetCell(wxWindow *wnd, int w = 0);
 547     ~wxHtmlWidgetCell() { m_Wnd->Destroy(); }
 548     virtual void Draw(wxDC& dc, int x, int y, int view_y1, int view_y2,
 549                       wxHtmlRenderingInfo& info);
 550     virtual void DrawInvisible(wxDC& dc, int x, int y,
 551                                wxHtmlRenderingInfo& info);
 552     virtual void Layout(int w);
 553
 554 protected:
 555     wxWindow* m_Wnd;
 556     int m_WidthFloat;
 557             // width float is used in adjustWidth (it is in percents)
 558
 559     DECLARE_ABSTRACT_CLASS(wxHtmlWidgetCell)
 560     DECLARE_NO_COPY_CLASS(wxHtmlWidgetCell)
 561 };
 562
 563
 564
 565 //--------------------------------------------------------------------------------
 566 // wxHtmlLinkInfo
 567 //                  Internal data structure. It represents hypertext link
 568 //--------------------------------------------------------------------------------
 569
 570 class WXDLLIMPEXP_HTML wxHtmlLinkInfo : public wxObject
 571 {
 572 public:
 573     wxHtmlLinkInfo() : wxObject()
 574           { m_Href = m_Target = wxEmptyString; m_Event = NULL, m_Cell = NULL; }
 575     wxHtmlLinkInfo(const wxString& href, const wxString& target = wxEmptyString) : wxObject()
 576           { m_Href = href; m_Target = target; m_Event = NULL, m_Cell = NULL; }
 577     wxHtmlLinkInfo(const wxHtmlLinkInfo& l) : wxObject()
 578           { m_Href = l.m_Href, m_Target = l.m_Target, m_Event = l.m_Event;
 579             m_Cell = l.m_Cell; }
 580     wxHtmlLinkInfo& operator=(const wxHtmlLinkInfo& l)
 581           { m_Href = l.m_Href, m_Target = l.m_Target, m_Event = l.m_Event;
 582             m_Cell = l.m_Cell; return *this; }
 583
 584     void SetEvent(const wxMouseEvent *e) { m_Event = e; }
 585     void SetHtmlCell(const wxHtmlCell *e) { m_Cell = e; }
 586
 587     wxString GetHref() const { return m_Href; }
 588     wxString GetTarget() const { return m_Target; }
 589     const wxMouseEvent* GetEvent() const { return m_Event; }
 590     const wxHtmlCell* GetHtmlCell() const { return m_Cell; }
 591
 592 private:
 593     wxString m_Href, m_Target;
 594     const wxMouseEvent *m_Event;
 595     const wxHtmlCell *m_Cell;
 596 };
 597
 598
 599
 600 // ----------------------------------------------------------------------------
 601 // wxHtmlTerminalCellsInterator
 602 // ----------------------------------------------------------------------------
 603
 604 class WXDLLIMPEXP_HTML wxHtmlTerminalCellsInterator
 605 {
 606 public:
 607     wxHtmlTerminalCellsInterator(const wxHtmlCell *from, const wxHtmlCell *to)
 608         : m_to(to), m_pos(from) {}
 609
 610     operator bool() const { return m_pos != NULL; }
 611     const wxHtmlCell* operator++();
 612     const wxHtmlCell* operator->() const { return m_pos; }
 613     const wxHtmlCell* operator*() const { return m_pos; }
 614
 615 private:
 616     const wxHtmlCell *m_to, *m_pos;
 617 };
 618
 619
 620
 621 #endif // wxUSE_HTML
 622
 623 #endif // _WX_HTMLCELL_H_
 624