include/wx/html/htmlcell.h

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        wx/html/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_FWD_HTML wxHtmlWindowInterface;
  24 class WXDLLIMPEXP_FWD_HTML wxHtmlLinkInfo;
  25 class WXDLLIMPEXP_FWD_HTML wxHtmlCell;
  26 class WXDLLIMPEXP_FWD_HTML wxHtmlContainerCell;
  27
  28
  29 // wxHtmlSelection is data holder with information about text selection.
  30 // Selection is defined by two positions (beginning and end of the selection)
  31 // and two leaf(!) cells at these positions.
  32 class WXDLLIMPEXP_HTML wxHtmlSelection
  33 {
  34 public:
  35     wxHtmlSelection()
  36         : m_fromPos(wxDefaultPosition), m_toPos(wxDefaultPosition),
  37           m_fromCharacterPos(-1), m_toCharacterPos(-1),
  38           m_fromCell(NULL), m_toCell(NULL) {}
  39
  40     // this version is used for the user selection defined with the mouse
  41     void Set(const wxPoint& fromPos, const wxHtmlCell *fromCell,
  42              const wxPoint& toPos, const wxHtmlCell *toCell);
  43     void Set(const wxHtmlCell *fromCell, const wxHtmlCell *toCell);
  44
  45     const wxHtmlCell *GetFromCell() const { return m_fromCell; }
  46     const wxHtmlCell *GetToCell() const { return m_toCell; }
  47
  48     // these values are in absolute coordinates:
  49     const wxPoint& GetFromPos() const { return m_fromPos; }
  50     const wxPoint& GetToPos() const { return m_toPos; }
  51
  52     // these are From/ToCell's private data
  53     void ClearFromToCharacterPos() { m_toCharacterPos = m_fromCharacterPos = -1; }
  54     bool AreFromToCharacterPosSet() const { return m_toCharacterPos != -1 && m_fromCharacterPos != -1; }
  55
  56     void SetFromCharacterPos (wxCoord pos) { m_fromCharacterPos = pos; }
  57     void SetToCharacterPos (wxCoord pos) { m_toCharacterPos = pos; }
  58     wxCoord GetFromCharacterPos () const { return m_fromCharacterPos; }
  59     wxCoord GetToCharacterPos () const { return m_toCharacterPos; }
  60
  61     bool IsEmpty() const
  62         { return m_fromPos == wxDefaultPosition &&
  63                  m_toPos == wxDefaultPosition; }
  64
  65 private:
  66     wxPoint m_fromPos, m_toPos;
  67     wxCoord m_fromCharacterPos, m_toCharacterPos;
  68     const wxHtmlCell *m_fromCell, *m_toCell;
  69 };
  70
  71
  72
  73 enum wxHtmlSelectionState
  74 {
  75     wxHTML_SEL_OUT,     // currently rendered cell is outside the selection
  76     wxHTML_SEL_IN,      // ... is inside selection
  77     wxHTML_SEL_CHANGING // ... is the cell on which selection state changes
  78 };
  79
  80 // Selection state is passed to wxHtmlCell::Draw so that it can render itself
  81 // differently e.g. when inside text selection or outside it.
  82 class WXDLLIMPEXP_HTML wxHtmlRenderingState
  83 {
  84 public:
  85     wxHtmlRenderingState() : m_selState(wxHTML_SEL_OUT) {}
  86
  87     void SetSelectionState(wxHtmlSelectionState s) { m_selState = s; }
  88     wxHtmlSelectionState GetSelectionState() const { return m_selState; }
  89
  90     void SetFgColour(const wxColour& c) { m_fgColour = c; }
  91     const wxColour& GetFgColour() const { return m_fgColour; }
  92     void SetBgColour(const wxColour& c) { m_bgColour = c; }
  93     const wxColour& GetBgColour() const { return m_bgColour; }
  94
  95 private:
  96     wxHtmlSelectionState  m_selState;
  97     wxColour              m_fgColour, m_bgColour;
  98 };
  99
 100
 101 // HTML rendering customization. This class is used when rendering wxHtmlCells
 102 // as a callback:
 103 class WXDLLIMPEXP_HTML wxHtmlRenderingStyle
 104 {
 105 public:
 106     virtual ~wxHtmlRenderingStyle() {}
 107     virtual wxColour GetSelectedTextColour(const wxColour& clr) = 0;
 108     virtual wxColour GetSelectedTextBgColour(const wxColour& clr) = 0;
 109 };
 110
 111 // Standard style:
 112 class WXDLLIMPEXP_HTML wxDefaultHtmlRenderingStyle : public wxHtmlRenderingStyle
 113 {
 114 public:
 115     virtual wxColour GetSelectedTextColour(const wxColour& clr);
 116     virtual wxColour GetSelectedTextBgColour(const wxColour& clr);
 117 };
 118
 119
 120 // Information given to cells when drawing them. Contains rendering state,
 121 // selection information and rendering style object that can be used to
 122 // customize the output.
 123 class WXDLLIMPEXP_HTML wxHtmlRenderingInfo
 124 {
 125 public:
 126     wxHtmlRenderingInfo() : m_selection(NULL), m_style(NULL) {}
 127
 128     void SetSelection(wxHtmlSelection *s) { m_selection = s; }
 129     wxHtmlSelection *GetSelection() const { return m_selection; }
 130
 131     void SetStyle(wxHtmlRenderingStyle *style) { m_style = style; }
 132     wxHtmlRenderingStyle& GetStyle() { return *m_style; }
 133
 134     wxHtmlRenderingState& GetState() { return m_state; }
 135
 136 protected:
 137     wxHtmlSelection      *m_selection;
 138     wxHtmlRenderingStyle *m_style;
 139     wxHtmlRenderingState m_state;
 140 };
 141
 142
 143 // Flags for wxHtmlCell::FindCellByPos
 144 enum
 145 {
 146     wxHTML_FIND_EXACT             = 1,
 147     wxHTML_FIND_NEAREST_BEFORE    = 2,
 148     wxHTML_FIND_NEAREST_AFTER     = 4
 149 };
 150
 151
 152 // Superscript/subscript/normal script mode of a cell
 153 enum wxHtmlScriptMode
 154 {
 155     wxHTML_SCRIPT_NORMAL,
 156     wxHTML_SCRIPT_SUB,
 157     wxHTML_SCRIPT_SUP
 158 };
 159
 160
 161 // ---------------------------------------------------------------------------
 162 // wxHtmlCell
 163 //                  Internal data structure. It represents fragments of parsed
 164 //                  HTML page - a word, picture, table, horizontal line and so
 165 //                  on.  It is used by wxHtmlWindow to represent HTML page in
 166 //                  memory.
 167 // ---------------------------------------------------------------------------
 168
 169
 170 class WXDLLIMPEXP_HTML wxHtmlCell : public wxObject
 171 {
 172 public:
 173     wxHtmlCell();
 174     virtual ~wxHtmlCell();
 175
 176     void SetParent(wxHtmlContainerCell *p) {m_Parent = p;}
 177     wxHtmlContainerCell *GetParent() const {return m_Parent;}
 178
 179     int GetPosX() const {return m_PosX;}
 180     int GetPosY() const {return m_PosY;}
 181     int GetWidth() const {return m_Width;}
 182
 183     // Returns the maximum possible length of the cell.
 184     // Call Layout at least once before using GetMaxTotalWidth()
 185     virtual int GetMaxTotalWidth() const { return m_Width; }
 186
 187     int GetHeight() const {return m_Height;}
 188     int GetDescent() const {return m_Descent;}
 189
 190     void SetScriptMode(wxHtmlScriptMode mode, long previousBase);
 191     wxHtmlScriptMode GetScriptMode() const { return m_ScriptMode; }
 192     long GetScriptBaseline() { return m_ScriptBaseline; }
 193
 194     // Formatting cells are not visible on the screen, they only alter
 195     // renderer's state.
 196     bool IsFormattingCell() const { return m_Width == 0 && m_Height == 0; }
 197
 198     const wxString& GetId() const { return m_id; }
 199     void SetId(const wxString& id) { m_id = id; }
 200
 201     // returns the link associated with this cell. The position is position
 202     // within the cell so it varies from 0 to m_Width, from 0 to m_Height
 203     virtual wxHtmlLinkInfo* GetLink(int WXUNUSED(x) = 0,
 204                                     int WXUNUSED(y) = 0) const
 205         { return m_Link; }
 206
 207     // Returns cursor to be used when mouse is over the cell:
 208     virtual wxCursor GetMouseCursor(wxHtmlWindowInterface *window) const;
 209
 210 #if WXWIN_COMPATIBILITY_2_6
 211     // this was replaced by GetMouseCursor, don't use in new code!
 212     virtual wxCursor GetCursor() const;
 213 #endif
 214
 215     // return next cell among parent's cells
 216     wxHtmlCell *GetNext() const {return m_Next;}
 217     // returns first child cell (if there are any, i.e. if this is container):
 218     virtual wxHtmlCell* GetFirstChild() const { return NULL; }
 219
 220     // members writing methods
 221     virtual void SetPos(int x, int y) {m_PosX = x, m_PosY = y;}
 222     void SetLink(const wxHtmlLinkInfo& link);
 223     void SetNext(wxHtmlCell *cell) {m_Next = cell;}
 224
 225     // 1. adjust cell's width according to the fact that maximal possible width
 226     //    is w.  (this has sense when working with horizontal lines, tables
 227     //    etc.)
 228     // 2. prepare layout (=fill-in m_PosX, m_PosY (and sometime m_Height)
 229     //    members) = place items to fit window, according to the width w
 230     virtual void Layout(int w);
 231
 232     // renders the cell
 233     virtual void Draw(wxDC& WXUNUSED(dc),
 234                       int WXUNUSED(x), int WXUNUSED(y),
 235                       int WXUNUSED(view_y1), int WXUNUSED(view_y2),
 236                       wxHtmlRenderingInfo& WXUNUSED(info)) {}
 237
 238     // proceed drawing actions in case the cell is not visible (scrolled out of
 239     // screen).  This is needed to change fonts, colors and so on.
 240     virtual void DrawInvisible(wxDC& WXUNUSED(dc),
 241                                int WXUNUSED(x), int WXUNUSED(y),
 242                                wxHtmlRenderingInfo& WXUNUSED(info)) {}
 243
 244     // This method returns pointer to the FIRST cell for that
 245     // the condition
 246     // is true. It first checks if the condition is true for this
 247     // cell and then calls m_Next->Find(). (Note: it checks
 248     // all subcells if the cell is container)
 249     // Condition is unique condition identifier (see htmldefs.h)
 250     // (user-defined condition IDs should start from 10000)
 251     // and param is optional parameter
 252     // Example : m_Cell->Find(wxHTML_COND_ISANCHOR, "news");
 253     //   returns pointer to anchor news
 254     virtual const wxHtmlCell* Find(int condition, const void* param) const;
 255
 256
 257     // This function is called when mouse button is clicked over the cell.
 258     // Returns true if a link is clicked, false otherwise.
 259     //
 260     // 'window' is pointer to wxHtmlWindowInterface of the window which
 261     // generated the event.
 262     // HINT: if this handling is not enough for you you should use
 263     //       wxHtmlWidgetCell
 264     virtual bool ProcessMouseClick(wxHtmlWindowInterface *window,
 265                                    const wxPoint& pos,
 266                                    const wxMouseEvent& event);
 267
 268 #if WXWIN_COMPATIBILITY_2_6
 269     // this was replaced by ProcessMouseClick, don't use in new code!
 270     virtual void OnMouseClick(wxWindow *window,
 271                               int x, int y, const wxMouseEvent& event);
 272 #endif
 273
 274     // This method used to adjust pagebreak position. The parameter is variable
 275     // that contains y-coordinate of page break (= horizontal line that should
 276     // not be crossed by words, images etc.). If this cell cannot be divided
 277     // into two pieces (each one on another page) then it moves the pagebreak
 278     // few pixels up.
 279     //
 280     // Returned value : true if pagebreak was modified, false otherwise
 281     // Usage : while (container->AdjustPagebreak(&p)) {}
 282     virtual bool AdjustPagebreak(int *pagebreak,
 283                                  const wxArrayInt& known_pagebreaks,
 284                                  int pageHeight) const;
 285
 286     // Sets cell's behaviour on pagebreaks (see AdjustPagebreak). Default
 287     // is true - the cell can be split on two pages
 288     // If there is no way to fit a cell in the current page size, the cell
 289     // is always split, ignoring this setting.
 290     void SetCanLiveOnPagebreak(bool can) { m_CanLiveOnPagebreak = can; }
 291
 292     // Can the line be broken before this cell?
 293     virtual bool IsLinebreakAllowed() const
 294         { return !IsFormattingCell(); }
 295
 296     // Returns true for simple == terminal cells, i.e. not composite ones.
 297     // This if for internal usage only and may disappear in future versions!
 298     virtual bool IsTerminalCell() const { return true; }
 299
 300     // Find a cell inside this cell positioned at the given coordinates
 301     // (relative to this's positions). Returns NULL if no such cell exists.
 302     // The flag can be used to specify whether to look for terminal or
 303     // nonterminal cells or both. In either case, returned cell is deepest
 304     // cell in cells tree that contains [x,y].
 305     virtual wxHtmlCell *FindCellByPos(wxCoord x, wxCoord y,
 306                                   unsigned flags = wxHTML_FIND_EXACT) const;
 307
 308     // Returns absolute position of the cell on HTML canvas.
 309     // If rootCell is provided, then it's considered to be the root of the
 310     // hierarchy and the returned value is relative to it.
 311     wxPoint GetAbsPos(wxHtmlCell *rootCell = NULL) const;
 312
 313     // Returns root cell of the hierarchy (i.e. grand-grand-...-parent that
 314     // doesn't have a parent itself)
 315     wxHtmlCell *GetRootCell() const;
 316
 317     // Returns first (last) terminal cell inside this cell. It may return NULL,
 318     // but it is rare -- only if there are no terminals in the tree.
 319     virtual wxHtmlCell *GetFirstTerminal() const
 320         { return wxConstCast(this, wxHtmlCell); }
 321     virtual wxHtmlCell *GetLastTerminal() const
 322         { return wxConstCast(this, wxHtmlCell); }
 323
 324     // Returns cell's depth, i.e. how far under the root cell it is
 325     // (if it is the root, depth is 0)
 326     unsigned GetDepth() const;
 327
 328     // Returns true if the cell appears before 'cell' in natural order of
 329     // cells (= as they are read). If cell A is (grand)parent of cell B,
 330     // then both A.IsBefore(B) and B.IsBefore(A) always return true.
 331     bool IsBefore(wxHtmlCell *cell) const;
 332
 333     // Converts the cell into text representation. If sel != NULL then
 334     // only part of the cell inside the selection is converted.
 335     virtual wxString ConvertToText(wxHtmlSelection *WXUNUSED(sel)) const
 336         { return wxEmptyString; }
 337
 338 protected:
 339     // pointer to the next cell
 340     wxHtmlCell *m_Next;
 341     // pointer to parent cell
 342     wxHtmlContainerCell *m_Parent;
 343
 344     // dimensions of fragment (m_Descent is used to position text & images)
 345     long m_Width, m_Height, m_Descent;
 346     // position where the fragment is drawn:
 347     long m_PosX, m_PosY;
 348
 349     // superscript/subscript/normal:
 350     wxHtmlScriptMode m_ScriptMode;
 351     long m_ScriptBaseline;
 352
 353     // destination address if this fragment is hypertext link, NULL otherwise
 354     wxHtmlLinkInfo *m_Link;
 355     // true if this cell can be placed on pagebreak, false otherwise
 356     bool m_CanLiveOnPagebreak;
 357     // unique identifier of the cell, generated from "id" property of tags
 358     wxString m_id;
 359
 360     DECLARE_ABSTRACT_CLASS(wxHtmlCell)
 361     wxDECLARE_NO_COPY_CLASS(wxHtmlCell);
 362 };
 363
 364
 365
 366
 367 // ----------------------------------------------------------------------------
 368 // Inherited cells:
 369 // ----------------------------------------------------------------------------
 370
 371
 372 // ----------------------------------------------------------------------------
 373 // wxHtmlWordCell
 374 //                  Single word in input stream.
 375 // ----------------------------------------------------------------------------
 376
 377 class WXDLLIMPEXP_HTML wxHtmlWordCell : public wxHtmlCell
 378 {
 379 public:
 380     wxHtmlWordCell(const wxString& word, const wxDC& dc);
 381     void Draw(wxDC& dc, int x, int y, int view_y1, int view_y2,
 382               wxHtmlRenderingInfo& info);
 383     virtual wxCursor GetMouseCursor(wxHtmlWindowInterface *window) const;
 384     virtual wxString ConvertToText(wxHtmlSelection *sel) const;
 385     bool IsLinebreakAllowed() const { return m_allowLinebreak; }
 386
 387     void SetPreviousWord(wxHtmlWordCell *cell);
 388
 389 protected:
 390     virtual wxString GetAllAsText() const
 391         { return m_Word; }
 392     virtual wxString GetPartAsText(int begin, int end) const
 393         { return m_Word.Mid(begin, end - begin); }
 394
 395     void SetSelectionPrivPos(const wxDC& dc, wxHtmlSelection *s) const;
 396     void Split(const wxDC& dc,
 397                const wxPoint& selFrom, const wxPoint& selTo,
 398                unsigned& pos1, unsigned& pos2) const;
 399
 400     wxString m_Word;
 401     bool     m_allowLinebreak;
 402
 403     DECLARE_ABSTRACT_CLASS(wxHtmlWordCell)
 404     wxDECLARE_NO_COPY_CLASS(wxHtmlWordCell);
 405 };
 406
 407
 408 // wxHtmlWordCell specialization for storing text fragments with embedded
 409 // '\t's; these differ from normal words in that the displayed text is
 410 // different from the text copied to clipboard
 411 class WXDLLIMPEXP_HTML wxHtmlWordWithTabsCell : public wxHtmlWordCell
 412 {
 413 public:
 414     wxHtmlWordWithTabsCell(const wxString& word,
 415                            const wxString& wordOrig,
 416                            size_t linepos,
 417                            const wxDC& dc)
 418         : wxHtmlWordCell(word, dc),
 419           m_wordOrig(wordOrig),
 420           m_linepos(linepos)
 421     {}
 422
 423 protected:
 424     virtual wxString GetAllAsText() const;
 425     virtual wxString GetPartAsText(int begin, int end) const;
 426
 427     wxString m_wordOrig;
 428     size_t   m_linepos;
 429 };
 430
 431
 432 // Container contains other cells, thus forming tree structure of rendering
 433 // elements. Basic code of layout algorithm is contained in this class.
 434 class WXDLLIMPEXP_HTML wxHtmlContainerCell : public wxHtmlCell
 435 {
 436 public:
 437     wxHtmlContainerCell(wxHtmlContainerCell *parent);
 438     virtual ~wxHtmlContainerCell();
 439
 440     virtual void Layout(int w);
 441     virtual void Draw(wxDC& dc, int x, int y, int view_y1, int view_y2,
 442                       wxHtmlRenderingInfo& info);
 443     virtual void DrawInvisible(wxDC& dc, int x, int y,
 444                                wxHtmlRenderingInfo& info);
 445
 446     virtual bool AdjustPagebreak(int *pagebreak,
 447                                  const wxArrayInt& known_pagebreaks,
 448                                  int pageHeight) const;
 449
 450     // insert cell at the end of m_Cells list
 451     void InsertCell(wxHtmlCell *cell);
 452
 453     // sets horizontal/vertical alignment
 454     void SetAlignHor(int al) {m_AlignHor = al; m_LastLayout = -1;}
 455     int GetAlignHor() const {return m_AlignHor;}
 456     void SetAlignVer(int al) {m_AlignVer = al; m_LastLayout = -1;}
 457     int GetAlignVer() const {return m_AlignVer;}
 458
 459     // sets left-border indentation. units is one of wxHTML_UNITS_* constants
 460     // what is combination of wxHTML_INDENT_*
 461     void SetIndent(int i, int what, int units = wxHTML_UNITS_PIXELS);
 462     // returns the indentation. ind is one of wxHTML_INDENT_* constants
 463     int GetIndent(int ind) const;
 464     // returns type of value returned by GetIndent(ind)
 465     int GetIndentUnits(int ind) const;
 466
 467     // sets alignment info based on given tag's params
 468     void SetAlign(const wxHtmlTag& tag);
 469     // sets floating width adjustment
 470     // (examples : 32 percent of parent container,
 471     // -15 pixels percent (this means 100 % - 15 pixels)
 472     void SetWidthFloat(int w, int units) {m_WidthFloat = w; m_WidthFloatUnits = units; m_LastLayout = -1;}
 473     void SetWidthFloat(const wxHtmlTag& tag, double pixel_scale = 1.0);
 474     // sets minimal height of this container.
 475     void SetMinHeight(int h, int align = wxHTML_ALIGN_TOP) {m_MinHeight = h; m_MinHeightAlign = align; m_LastLayout = -1;}
 476
 477     void SetBackgroundColour(const wxColour& clr) {m_UseBkColour = true; m_BkColour = clr;}
 478     // returns background colour (of wxNullColour if none set), so that widgets can
 479     // adapt to it:
 480     wxColour GetBackgroundColour();
 481     void SetBorder(const wxColour& clr1, const wxColour& clr2, int border = 1) {m_Border = border; m_BorderColour1 = clr1, m_BorderColour2 = clr2;}
 482     virtual wxHtmlLinkInfo* GetLink(int x = 0, int y = 0) const;
 483     virtual const wxHtmlCell* Find(int condition, const void* param) const;
 484
 485 #if WXWIN_COMPATIBILITY_2_6
 486     // this was replaced by ProcessMouseClick, don't use in new code!
 487     virtual void OnMouseClick(wxWindow *window,
 488                               int x, int y, const wxMouseEvent& event);
 489 #endif
 490     virtual bool ProcessMouseClick(wxHtmlWindowInterface *window,
 491                                    const wxPoint& pos,
 492                                    const wxMouseEvent& event);
 493
 494     virtual wxHtmlCell* GetFirstChild() const { return m_Cells; }
 495
 496     // returns last child cell:
 497     wxHtmlCell* GetLastChild() const { return m_LastCell; }
 498
 499     // see comment in wxHtmlCell about this method
 500     virtual bool IsTerminalCell() const { return false; }
 501
 502     virtual wxHtmlCell *FindCellByPos(wxCoord x, wxCoord y,
 503                                   unsigned flags = wxHTML_FIND_EXACT) const;
 504
 505     virtual wxHtmlCell *GetFirstTerminal() const;
 506     virtual wxHtmlCell *GetLastTerminal() const;
 507
 508
 509     // Removes indentation on top or bottom of the container (i.e. above or
 510     // below first/last terminal cell). For internal use only.
 511     virtual void RemoveExtraSpacing(bool top, bool bottom);
 512
 513     // Returns the maximum possible length of the container.
 514     // Call Layout at least once before using GetMaxTotalWidth()
 515     virtual int GetMaxTotalWidth() const { return m_MaxTotalWidth; }
 516
 517 protected:
 518     void UpdateRenderingStatePre(wxHtmlRenderingInfo& info,
 519                                  wxHtmlCell *cell) const;
 520     void UpdateRenderingStatePost(wxHtmlRenderingInfo& info,
 521                                   wxHtmlCell *cell) const;
 522
 523 protected:
 524     int m_IndentLeft, m_IndentRight, m_IndentTop, m_IndentBottom;
 525             // indentation of subcells. There is always m_Indent pixels
 526             // big space between given border of the container and the subcells
 527             // it m_Indent < 0 it is in PERCENTS, otherwise it is in pixels
 528     int m_MinHeight, m_MinHeightAlign;
 529         // minimal height.
 530     wxHtmlCell *m_Cells, *m_LastCell;
 531             // internal cells, m_Cells points to the first of them, m_LastCell to the last one.
 532             // (LastCell is needed only to speed-up InsertCell)
 533     int m_AlignHor, m_AlignVer;
 534             // alignment horizontal and vertical (left, center, right)
 535     int m_WidthFloat, m_WidthFloatUnits;
 536             // width float is used in adjustWidth
 537     bool m_UseBkColour;
 538     wxColour m_BkColour;
 539             // background color of this container
 540     int m_Border;
 541             // border size. Draw only if m_Border > 0
 542     wxColour m_BorderColour1, m_BorderColour2;
 543             // borders color of this container
 544     int m_LastLayout;
 545             // if != -1 then call to Layout may be no-op
 546             // if previous call to Layout has same argument
 547     int m_MaxTotalWidth;
 548             // Maximum possible length if ignoring line wrap
 549
 550
 551     DECLARE_ABSTRACT_CLASS(wxHtmlContainerCell)
 552     wxDECLARE_NO_COPY_CLASS(wxHtmlContainerCell);
 553 };
 554
 555
 556
 557 // ---------------------------------------------------------------------------
 558 // wxHtmlColourCell
 559 //                  Color changer.
 560 // ---------------------------------------------------------------------------
 561
 562 class WXDLLIMPEXP_HTML wxHtmlColourCell : public wxHtmlCell
 563 {
 564 public:
 565     wxHtmlColourCell(const wxColour& clr, int flags = wxHTML_CLR_FOREGROUND) : wxHtmlCell() {m_Colour = clr; m_Flags = flags;}
 566     virtual void Draw(wxDC& dc, int x, int y, int view_y1, int view_y2,
 567                       wxHtmlRenderingInfo& info);
 568     virtual void DrawInvisible(wxDC& dc, int x, int y,
 569                                wxHtmlRenderingInfo& info);
 570
 571 protected:
 572     wxColour m_Colour;
 573     unsigned m_Flags;
 574
 575     DECLARE_ABSTRACT_CLASS(wxHtmlColourCell)
 576     wxDECLARE_NO_COPY_CLASS(wxHtmlColourCell);
 577 };
 578
 579
 580
 581
 582 //--------------------------------------------------------------------------------
 583 // wxHtmlFontCell
 584 //                  Sets actual font used for text rendering
 585 //--------------------------------------------------------------------------------
 586
 587 class WXDLLIMPEXP_HTML wxHtmlFontCell : public wxHtmlCell
 588 {
 589 public:
 590     wxHtmlFontCell(wxFont *font) : wxHtmlCell() { m_Font = (*font); }
 591     virtual void Draw(wxDC& dc, int x, int y, int view_y1, int view_y2,
 592                       wxHtmlRenderingInfo& info);
 593     virtual void DrawInvisible(wxDC& dc, int x, int y,
 594                                wxHtmlRenderingInfo& info);
 595
 596 protected:
 597     wxFont m_Font;
 598
 599     DECLARE_ABSTRACT_CLASS(wxHtmlFontCell)
 600     wxDECLARE_NO_COPY_CLASS(wxHtmlFontCell);
 601 };
 602
 603
 604
 605
 606
 607
 608 //--------------------------------------------------------------------------------
 609 // wxHtmlwidgetCell
 610 //                  This cell is connected with wxWindow object
 611 //                  You can use it to insert windows into HTML page
 612 //                  (buttons, input boxes etc.)
 613 //--------------------------------------------------------------------------------
 614
 615 class WXDLLIMPEXP_HTML wxHtmlWidgetCell : public wxHtmlCell
 616 {
 617 public:
 618     // !!! wnd must have correct parent!
 619     // if w != 0 then the m_Wnd has 'floating' width - it adjust
 620     // it's width according to parent container's width
 621     // (w is percent of parent's width)
 622     wxHtmlWidgetCell(wxWindow *wnd, int w = 0);
 623     virtual ~wxHtmlWidgetCell() { m_Wnd->Destroy(); }
 624     virtual void Draw(wxDC& dc, int x, int y, int view_y1, int view_y2,
 625                       wxHtmlRenderingInfo& info);
 626     virtual void DrawInvisible(wxDC& dc, int x, int y,
 627                                wxHtmlRenderingInfo& info);
 628     virtual void Layout(int w);
 629
 630 protected:
 631     wxWindow* m_Wnd;
 632     int m_WidthFloat;
 633             // width float is used in adjustWidth (it is in percents)
 634
 635     DECLARE_ABSTRACT_CLASS(wxHtmlWidgetCell)
 636     wxDECLARE_NO_COPY_CLASS(wxHtmlWidgetCell);
 637 };
 638
 639
 640
 641 //--------------------------------------------------------------------------------
 642 // wxHtmlLinkInfo
 643 //                  Internal data structure. It represents hypertext link
 644 //--------------------------------------------------------------------------------
 645
 646 class WXDLLIMPEXP_HTML wxHtmlLinkInfo : public wxObject
 647 {
 648 public:
 649     wxHtmlLinkInfo() : wxObject()
 650           { m_Href = m_Target = wxEmptyString; m_Event = NULL, m_Cell = NULL; }
 651     wxHtmlLinkInfo(const wxString& href, const wxString& target = wxEmptyString) : wxObject()
 652           { m_Href = href; m_Target = target; m_Event = NULL, m_Cell = NULL; }
 653     wxHtmlLinkInfo(const wxHtmlLinkInfo& l) : wxObject()
 654           { m_Href = l.m_Href, m_Target = l.m_Target, m_Event = l.m_Event;
 655             m_Cell = l.m_Cell; }
 656     wxHtmlLinkInfo& operator=(const wxHtmlLinkInfo& l)
 657           { m_Href = l.m_Href, m_Target = l.m_Target, m_Event = l.m_Event;
 658             m_Cell = l.m_Cell; return *this; }
 659
 660     void SetEvent(const wxMouseEvent *e) { m_Event = e; }
 661     void SetHtmlCell(const wxHtmlCell *e) { m_Cell = e; }
 662
 663     wxString GetHref() const { return m_Href; }
 664     wxString GetTarget() const { return m_Target; }
 665     const wxMouseEvent* GetEvent() const { return m_Event; }
 666     const wxHtmlCell* GetHtmlCell() const { return m_Cell; }
 667
 668 private:
 669     wxString m_Href, m_Target;
 670     const wxMouseEvent *m_Event;
 671     const wxHtmlCell *m_Cell;
 672 };
 673
 674
 675
 676 // ----------------------------------------------------------------------------
 677 // wxHtmlTerminalCellsInterator
 678 // ----------------------------------------------------------------------------
 679
 680 class WXDLLIMPEXP_HTML wxHtmlTerminalCellsInterator
 681 {
 682 public:
 683     wxHtmlTerminalCellsInterator(const wxHtmlCell *from, const wxHtmlCell *to)
 684         : m_to(to), m_pos(from) {}
 685
 686     operator bool() const { return m_pos != NULL; }
 687     const wxHtmlCell* operator++();
 688     const wxHtmlCell* operator->() const { return m_pos; }
 689     const wxHtmlCell* operator*() const { return m_pos; }
 690
 691 private:
 692     const wxHtmlCell *m_to, *m_pos;
 693 };
 694
 695
 696
 697 #endif // wxUSE_HTML
 698
 699 #endif // _WX_HTMLCELL_H_
 700