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
  12 #ifndef _WX_HTMLCELL_H_
  13 #define _WX_HTMLCELL_H_
  14
  15 #if defined(__GNUG__) && !defined(NO_GCC_PRAGMA)
  16 #pragma interface "htmlcell.h"
  17 #endif
  18
  19 #include "wx/defs.h"
  20
  21 #if wxUSE_HTML
  22
  23 #include "wx/html/htmltag.h"
  24 #include "wx/html/htmldefs.h"
  25 #include "wx/window.h"
  26
  27
  28 class WXDLLIMPEXP_HTML wxHtmlLinkInfo;
  29 class WXDLLIMPEXP_HTML wxHtmlCell;
  30 class WXDLLIMPEXP_HTML wxHtmlContainerCell;
  31
  32
  33 // wxHtmlSelection is data holder with information about text selection.
  34 // Selection is defined by two positions (beginning and end of the selection)
  35 // and two leaf(!) cells at these positions.
  36 class WXDLLIMPEXP_HTML wxHtmlSelection
  37 {
  38 public:
  39     wxHtmlSelection()
  40         : m_fromPos(wxDefaultPosition), m_toPos(wxDefaultPosition),
  41           m_fromPrivPos(wxDefaultPosition), m_toPrivPos(wxDefaultPosition),
  42           m_fromCell(NULL), m_toCell(NULL) {}
  43
  44     void Set(const wxPoint& fromPos, const wxHtmlCell *fromCell,
  45              const wxPoint& toPos, const wxHtmlCell *toCell);
  46     void Set(const wxHtmlCell *fromCell, const wxHtmlCell *toCell);
  47
  48     const wxHtmlCell *GetFromCell() const { return m_fromCell; }
  49     const wxHtmlCell *GetToCell() const { return m_toCell; }
  50
  51     // these values are in absolute coordinates:
  52     const wxPoint& GetFromPos() const { return m_fromPos; }
  53     const wxPoint& GetToPos() const { return m_toPos; }
  54
  55     // these are From/ToCell's private data
  56     const wxPoint& GetFromPrivPos() const { return m_fromPrivPos; }
  57     const wxPoint& GetToPrivPos() const { return m_toPrivPos; }
  58     void SetFromPrivPos(const wxPoint& pos) { m_fromPrivPos = pos; }
  59     void SetToPrivPos(const wxPoint& pos) { m_toPrivPos = pos; }
  60     void ClearPrivPos() { m_toPrivPos = m_fromPrivPos = wxDefaultPosition; }
  61
  62     bool IsEmpty() const
  63         { return m_fromPos == wxDefaultPosition &&
  64                  m_toPos == wxDefaultPosition; }
  65
  66 private:
  67     wxPoint m_fromPos, m_toPos;
  68     wxPoint m_fromPrivPos, m_toPrivPos;
  69     const wxHtmlCell *m_fromCell, *m_toCell;
  70 };
  71
  72
  73
  74 enum wxHtmlSelectionState
  75 {
  76     wxHTML_SEL_OUT,     // currently rendered cell is outside the selection
  77     wxHTML_SEL_IN,      // ... is inside selection
  78     wxHTML_SEL_CHANGING // ... is the cell on which selection state changes
  79 };
  80
  81 // Selection state is passed to wxHtmlCell::Draw so that it can render itself
  82 // differently e.g. when inside text selection or outside it.
  83 class WXDLLIMPEXP_HTML wxHtmlRenderingState
  84 {
  85 public:
  86     wxHtmlRenderingState() : m_selState(wxHTML_SEL_OUT) {}
  87
  88     void SetSelectionState(wxHtmlSelectionState s) { m_selState = s; }
  89     wxHtmlSelectionState GetSelectionState() const { return m_selState; }
  90
  91     void SetFgColour(const wxColour& c) { m_fgColour = c; }
  92     const wxColour& GetFgColour() const { return m_fgColour; }
  93     void SetBgColour(const wxColour& c) { m_bgColour = c; }
  94     const wxColour& GetBgColour() const { return m_bgColour; }
  95
  96 private:
  97     wxHtmlSelectionState  m_selState;
  98     wxColour              m_fgColour, m_bgColour;
  99 };
 100
 101
 102 // HTML rendering customization. This class is used when rendering wxHtmlCells
 103 // as a callback:
 104 class WXDLLIMPEXP_HTML wxHtmlRenderingStyle
 105 {
 106 public:
 107     virtual ~wxHtmlRenderingStyle() {}
 108     virtual wxColour GetSelectedTextColour(const wxColour& clr) = 0;
 109     virtual wxColour GetSelectedTextBgColour(const wxColour& clr) = 0;
 110 };
 111
 112 // Standard style:
 113 class WXDLLIMPEXP_HTML wxDefaultHtmlRenderingStyle : public wxHtmlRenderingStyle
 114 {
 115 public:
 116     virtual wxColour GetSelectedTextColour(const wxColour& clr);
 117     virtual wxColour GetSelectedTextBgColour(const wxColour& clr);
 118 };
 119
 120
 121 // Information given to cells when drawing them. Contains rendering state,
 122 // selection information and rendering style object that can be used to
 123 // customize the output.
 124 class WXDLLIMPEXP_HTML wxHtmlRenderingInfo
 125 {
 126 public:
 127     wxHtmlRenderingInfo() : m_selection(NULL), m_style(NULL) {}
 128
 129     void SetSelection(wxHtmlSelection *s) { m_selection = s; }
 130     wxHtmlSelection *GetSelection() const { return m_selection; }
 131
 132     void SetStyle(wxHtmlRenderingStyle *style) { m_style = style; }
 133     wxHtmlRenderingStyle& GetStyle() { return *m_style; }
 134
 135     wxHtmlRenderingState& GetState() { return m_state; }
 136
 137 protected:
 138     wxHtmlSelection      *m_selection;
 139     wxHtmlRenderingStyle *m_style;
 140     wxHtmlRenderingState m_state;
 141 };
 142
 143
 144 // Flags for wxHtmlCell::FindCellByPos
 145 enum
 146 {
 147     wxHTML_FIND_EXACT             = 1,
 148     wxHTML_FIND_NEAREST_BEFORE    = 2,
 149     wxHTML_FIND_NEAREST_AFTER     = 4
 150 };
 151
 152
 153
 154
 155 // ---------------------------------------------------------------------------
 156 // wxHtmlCell
 157 //                  Internal data structure. It represents fragments of parsed
 158 //                  HTML page - a word, picture, table, horizontal line and so
 159 //                  on.  It is used by wxHtmlWindow to represent HTML page in
 160 //                  memory.
 161 // ---------------------------------------------------------------------------
 162
 163
 164 class WXDLLIMPEXP_HTML wxHtmlCell : public wxObject
 165 {
 166 public:
 167     wxHtmlCell();
 168     virtual ~wxHtmlCell();
 169
 170     void SetParent(wxHtmlContainerCell *p) {m_Parent = p;}
 171     wxHtmlContainerCell *GetParent() const {return m_Parent;}
 172
 173     int GetPosX() const {return m_PosX;}
 174     int GetPosY() const {return m_PosY;}
 175     int GetWidth() const {return m_Width;}
 176
 177     // Returns the maximum possible length of the cell.
 178     // Call Layout at least once before using GetMaxTotalWidth()
 179     virtual int GetMaxTotalWidth() const { return m_Width; }
 180
 181     int GetHeight() const {return m_Height;}
 182     int GetDescent() const {return m_Descent;}
 183
 184     // Formatting cells are not visible on the screen, they only alter
 185     // renderer's state.
 186     bool IsFormattingCell() const { return m_Width == 0 && m_Height == 0; }
 187
 188     const wxString& GetId() const { return m_id; }
 189     void SetId(const wxString& id) { m_id = id; }
 190
 191     // returns the link associated with this cell. The position is position
 192     // within the cell so it varies from 0 to m_Width, from 0 to m_Height
 193     virtual wxHtmlLinkInfo* GetLink(int WXUNUSED(x) = 0,
 194                                     int WXUNUSED(y) = 0) const
 195         { return m_Link; }
 196
 197     // Returns cursor to be used when mouse is over the cell:
 198     virtual wxCursor GetCursor() const;
 199
 200     // return next cell among parent's cells
 201     wxHtmlCell *GetNext() const {return m_Next;}
 202     // returns first child cell (if there are any, i.e. if this is container):
 203     virtual wxHtmlCell* GetFirstChild() const { return NULL; }
 204
 205     // members writing methods
 206     virtual void SetPos(int x, int y) {m_PosX = x, m_PosY = y;}
 207     void SetLink(const wxHtmlLinkInfo& link);
 208     void SetNext(wxHtmlCell *cell) {m_Next = cell;}
 209
 210     // 1. adjust cell's width according to the fact that maximal possible width
 211     //    is w.  (this has sense when working with horizontal lines, tables
 212     //    etc.)
 213     // 2. prepare layout (=fill-in m_PosX, m_PosY (and sometime m_Height)
 214     //    members) = place items to fit window, according to the width w
 215     virtual void Layout(int w);
 216
 217     // renders the cell
 218     virtual void Draw(wxDC& WXUNUSED(dc),
 219                       int WXUNUSED(x), int WXUNUSED(y),
 220                       int WXUNUSED(view_y1), int WXUNUSED(view_y2),
 221                       wxHtmlRenderingInfo& WXUNUSED(info)) {}
 222
 223     // proceed drawing actions in case the cell is not visible (scrolled out of
 224     // screen).  This is needed to change fonts, colors and so on.
 225     virtual void DrawInvisible(wxDC& WXUNUSED(dc),
 226                                int WXUNUSED(x), int WXUNUSED(y),
 227                                wxHtmlRenderingInfo& WXUNUSED(info)) {}
 228
 229     // This method returns pointer to the FIRST cell for that
 230     // the condition
 231     // is true. It first checks if the condition is true for this
 232     // cell and then calls m_Next->Find(). (Note: it checks
 233     // all subcells if the cell is container)
 234     // Condition is unique condition identifier (see htmldefs.h)
 235     // (user-defined condition IDs should start from 10000)
 236     // and param is optional parameter
 237     // Example : m_Cell->Find(wxHTML_COND_ISANCHOR, "news");
 238     //   returns pointer to anchor news
 239     virtual const wxHtmlCell* Find(int condition, const void* param) const;
 240
 241     // This function is called when mouse button is clicked over the cell.
 242     //
 243     // Parent is pointer to wxHtmlWindow that generated the event
 244     // HINT: if this handling is not enough for you you should use
 245     //       wxHtmlWidgetCell
 246     virtual void OnMouseClick(wxWindow *parent, int x, int y, const wxMouseEvent& event);
 247
 248     // This method used to adjust pagebreak position. The parameter is variable
 249     // that contains y-coordinate of page break (= horizontal line that should
 250     // not be crossed by words, images etc.). If this cell cannot be divided
 251     // into two pieces (each one on another page) then it moves the pagebreak
 252     // few pixels up.
 253     //
 254     // Returned value : true if pagebreak was modified, false otherwise
 255     // Usage : while (container->AdjustPagebreak(&p)) {}
 256     virtual bool AdjustPagebreak(int *pagebreak,
 257                                  int *known_pagebreaks = NULL,
 258                                  int number_of_pages = 0) const;
 259
 260     // Sets cell's behaviour on pagebreaks (see AdjustPagebreak). Default
 261     // is true - the cell can be split on two pages
 262     void SetCanLiveOnPagebreak(bool can) { m_CanLiveOnPagebreak = can; }
 263
 264     // Can the line be broken before this cell?
 265     virtual bool IsLinebreakAllowed() const
 266         { return !IsFormattingCell(); }
 267
 268     // Returns true for simple == terminal cells, i.e. not composite ones.
 269     // This if for internal usage only and may disappear in future versions!
 270     virtual bool IsTerminalCell() const { return true; }
 271
 272     // Find a cell inside this cell positioned at the given coordinates
 273     // (relative to this's positions). Returns NULL if no such cell exists.
 274     // The flag can be used to specify whether to look for terminal or
 275     // nonterminal cells or both. In either case, returned cell is deepest
 276     // cell in cells tree that contains [x,y].
 277     virtual wxHtmlCell *FindCellByPos(wxCoord x, wxCoord y,
 278                                   unsigned flags = wxHTML_FIND_EXACT) const;
 279
 280     // Returns absolute position of the cell on HTML canvas
 281     wxPoint GetAbsPos() const;
 282
 283     // Returns first (last) terminal cell inside this cell. It may return NULL,
 284     // but it is rare -- only if there are no terminals in the tree.
 285     virtual wxHtmlCell *GetFirstTerminal() const
 286         { return wxConstCast(this, wxHtmlCell); }
 287     virtual wxHtmlCell *GetLastTerminal() const
 288         { return wxConstCast(this, wxHtmlCell); }
 289
 290     // Returns cell's depth, i.e. how far under the root cell it is
 291     // (if it is the root, depth is 0)
 292     unsigned GetDepth() const;
 293
 294     // Returns true if the cell appears before 'cell' in natural order of
 295     // cells (= as they are read). If cell A is (grand)parent of cell B,
 296     // then both A.IsBefore(B) and B.IsBefore(A) always return true.
 297     bool IsBefore(wxHtmlCell *cell) const;
 298
 299     // Converts the cell into text representation. If sel != NULL then
 300     // only part of the cell inside the selection is converted.
 301     virtual wxString ConvertToText(wxHtmlSelection *WXUNUSED(sel)) const
 302         { return wxEmptyString; }
 303
 304 protected:
 305     wxHtmlCell *m_Next;
 306             // pointer to the next cell
 307     wxHtmlContainerCell *m_Parent;
 308             // pointer to parent cell
 309     long m_Width, m_Height, m_Descent;
 310             // dimensions of fragment
 311             // m_Descent is used to position text&images..
 312     long m_PosX, m_PosY;
 313             // position where the fragment is drawn
 314     wxHtmlLinkInfo *m_Link;
 315             // destination address if this fragment is hypertext link, NULL otherwise
 316     bool m_CanLiveOnPagebreak;
 317             // true if this cell can be placed on pagebreak, false otherwise
 318     wxString m_id;
 319             // unique identifier of the cell, generated from "id" property of tags
 320
 321     DECLARE_ABSTRACT_CLASS(wxHtmlCell)
 322     DECLARE_NO_COPY_CLASS(wxHtmlCell)
 323 };
 324
 325
 326
 327
 328 // ----------------------------------------------------------------------------
 329 // Inherited cells:
 330 // ----------------------------------------------------------------------------
 331
 332
 333 // ----------------------------------------------------------------------------
 334 // wxHtmlWordCell
 335 //                  Single word in input stream.
 336 // ----------------------------------------------------------------------------
 337
 338 class WXDLLIMPEXP_HTML wxHtmlWordCell : public wxHtmlCell
 339 {
 340 public:
 341     wxHtmlWordCell(const wxString& word, wxDC& dc);
 342     void Draw(wxDC& dc, int x, int y, int view_y1, int view_y2,
 343               wxHtmlRenderingInfo& info);
 344     wxCursor GetCursor() const;
 345     wxString ConvertToText(wxHtmlSelection *sel) const;
 346     bool IsLinebreakAllowed() const { return m_allowLinebreak; }
 347
 348     void SetPreviousWord(wxHtmlWordCell *cell);
 349
 350 protected:
 351     void SetSelectionPrivPos(wxDC& dc, wxHtmlSelection *s) const;
 352     void Split(wxDC& dc,
 353                const wxPoint& selFrom, const wxPoint& selTo,
 354                unsigned& pos1, unsigned& pos2) const;
 355
 356     wxString m_Word;
 357     bool     m_allowLinebreak;
 358
 359     DECLARE_ABSTRACT_CLASS(wxHtmlWordCell)
 360     DECLARE_NO_COPY_CLASS(wxHtmlWordCell)
 361 };
 362
 363
 364
 365
 366
 367 // Container contains other cells, thus forming tree structure of rendering
 368 // elements. Basic code of layout algorithm is contained in this class.
 369 class WXDLLIMPEXP_HTML wxHtmlContainerCell : public wxHtmlCell
 370 {
 371 public:
 372     wxHtmlContainerCell(wxHtmlContainerCell *parent);
 373     ~wxHtmlContainerCell();
 374
 375     virtual void Layout(int w);
 376     virtual void Draw(wxDC& dc, int x, int y, int view_y1, int view_y2,
 377                       wxHtmlRenderingInfo& info);
 378     virtual void DrawInvisible(wxDC& dc, int x, int y,
 379                                wxHtmlRenderingInfo& info);
 380     virtual bool AdjustPagebreak(int *pagebreak, int *known_pagebreaks = NULL, int number_of_pages = 0) const;
 381
 382     // insert cell at the end of m_Cells list
 383     void InsertCell(wxHtmlCell *cell);
 384
 385     // sets horizontal/vertical alignment
 386     void SetAlignHor(int al) {m_AlignHor = al; m_LastLayout = -1;}
 387     int GetAlignHor() const {return m_AlignHor;}
 388     void SetAlignVer(int al) {m_AlignVer = al; m_LastLayout = -1;}
 389     int GetAlignVer() const {return m_AlignVer;}
 390
 391     // sets left-border indentation. units is one of wxHTML_UNITS_* constants
 392     // what is combination of wxHTML_INDENT_*
 393     void SetIndent(int i, int what, int units = wxHTML_UNITS_PIXELS);
 394     // returns the indentation. ind is one of wxHTML_INDENT_* constants
 395     int GetIndent(int ind) const;
 396     // returns type of value returned by GetIndent(ind)
 397     int GetIndentUnits(int ind) const;
 398
 399     // sets alignment info based on given tag's params
 400     void SetAlign(const wxHtmlTag& tag);
 401     // sets floating width adjustment
 402     // (examples : 32 percent of parent container,
 403     // -15 pixels percent (this means 100 % - 15 pixels)
 404     void SetWidthFloat(int w, int units) {m_WidthFloat = w; m_WidthFloatUnits = units; m_LastLayout = -1;}
 405     void SetWidthFloat(const wxHtmlTag& tag, double pixel_scale = 1.0);
 406     // sets minimal height of this container.
 407     void SetMinHeight(int h, int align = wxHTML_ALIGN_TOP) {m_MinHeight = h; m_MinHeightAlign = align; m_LastLayout = -1;}
 408
 409     void SetBackgroundColour(const wxColour& clr) {m_UseBkColour = true; m_BkColour = clr;}
 410     // returns background colour (of wxNullColour if none set), so that widgets can
 411     // adapt to it:
 412     wxColour GetBackgroundColour();
 413     void SetBorder(const wxColour& clr1, const wxColour& clr2) {m_UseBorder = true; m_BorderColour1 = clr1, m_BorderColour2 = clr2;}
 414     virtual wxHtmlLinkInfo* GetLink(int x = 0, int y = 0) const;
 415     virtual const wxHtmlCell* Find(int condition, const void* param) const;
 416     virtual void OnMouseClick(wxWindow *parent, int x, int y, const wxMouseEvent& event);
 417
 418     virtual wxHtmlCell* GetFirstChild() const { return m_Cells; }
 419 #if WXWIN_COMPATIBILITY_2_4
 420     wxDEPRECATED( wxHtmlCell* GetFirstCell() const );
 421 #endif
 422
 423     // see comment in wxHtmlCell about this method
 424     virtual bool IsTerminalCell() const { return false; }
 425
 426     virtual wxHtmlCell *FindCellByPos(wxCoord x, wxCoord y,
 427                                   unsigned flags = wxHTML_FIND_EXACT) const;
 428
 429     virtual wxHtmlCell *GetFirstTerminal() const;
 430     virtual wxHtmlCell *GetLastTerminal() const;
 431
 432
 433     // Removes indentation on top or bottom of the container (i.e. above or
 434     // below first/last terminal cell). For internal use only.
 435     void RemoveExtraSpacing(bool top, bool bottom);
 436
 437     // Returns the maximum possible length of the container.
 438     // Call Layout at least once before using GetMaxTotalWidth()
 439     virtual int GetMaxTotalWidth() const { return m_MaxTotalWidth; }
 440
 441 protected:
 442     void UpdateRenderingStatePre(wxHtmlRenderingInfo& info,
 443                                  wxHtmlCell *cell) const;
 444     void UpdateRenderingStatePost(wxHtmlRenderingInfo& info,
 445                                   wxHtmlCell *cell) const;
 446
 447 protected:
 448     int m_IndentLeft, m_IndentRight, m_IndentTop, m_IndentBottom;
 449             // indentation of subcells. There is always m_Indent pixels
 450             // big space between given border of the container and the subcells
 451             // it m_Indent < 0 it is in PERCENTS, otherwise it is in pixels
 452     int m_MinHeight, m_MinHeightAlign;
 453         // minimal height.
 454     wxHtmlCell *m_Cells, *m_LastCell;
 455             // internal cells, m_Cells points to the first of them, m_LastCell to the last one.
 456             // (LastCell is needed only to speed-up InsertCell)
 457     int m_AlignHor, m_AlignVer;
 458             // alignment horizontal and vertical (left, center, right)
 459     int m_WidthFloat, m_WidthFloatUnits;
 460             // width float is used in adjustWidth
 461     bool m_UseBkColour;
 462     wxColour m_BkColour;
 463             // background color of this container
 464     bool m_UseBorder;
 465     wxColour m_BorderColour1, m_BorderColour2;
 466             // borders color of this container
 467     int m_LastLayout;
 468             // if != -1 then call to Layout may be no-op
 469             // if previous call to Layout has same argument
 470     int m_MaxTotalWidth;
 471             // Maximum possible length if ignoring line wrap
 472
 473
 474     DECLARE_ABSTRACT_CLASS(wxHtmlContainerCell)
 475     DECLARE_NO_COPY_CLASS(wxHtmlContainerCell)
 476 };
 477
 478 #if WXWIN_COMPATIBILITY_2_4
 479 inline wxHtmlCell* wxHtmlContainerCell::GetFirstCell() const
 480     { return GetFirstChild(); }
 481 #endif
 482
 483
 484
 485
 486 // ---------------------------------------------------------------------------
 487 // wxHtmlColourCell
 488 //                  Color changer.
 489 // ---------------------------------------------------------------------------
 490
 491 class WXDLLIMPEXP_HTML wxHtmlColourCell : public wxHtmlCell
 492 {
 493 public:
 494     wxHtmlColourCell(const wxColour& clr, int flags = wxHTML_CLR_FOREGROUND) : wxHtmlCell() {m_Colour = clr; m_Flags = flags;}
 495     virtual void Draw(wxDC& dc, int x, int y, int view_y1, int view_y2,
 496                       wxHtmlRenderingInfo& info);
 497     virtual void DrawInvisible(wxDC& dc, int x, int y,
 498                                wxHtmlRenderingInfo& info);
 499
 500 protected:
 501     wxColour m_Colour;
 502     unsigned m_Flags;
 503
 504     DECLARE_ABSTRACT_CLASS(wxHtmlColourCell)
 505     DECLARE_NO_COPY_CLASS(wxHtmlColourCell)
 506 };
 507
 508
 509
 510
 511 //--------------------------------------------------------------------------------
 512 // wxHtmlFontCell
 513 //                  Sets actual font used for text rendering
 514 //--------------------------------------------------------------------------------
 515
 516 class WXDLLIMPEXP_HTML wxHtmlFontCell : public wxHtmlCell
 517 {
 518 public:
 519     wxHtmlFontCell(wxFont *font) : wxHtmlCell() { m_Font = (*font); }
 520     virtual void Draw(wxDC& dc, int x, int y, int view_y1, int view_y2,
 521                       wxHtmlRenderingInfo& info);
 522     virtual void DrawInvisible(wxDC& dc, int x, int y,
 523                                wxHtmlRenderingInfo& info);
 524
 525 protected:
 526     wxFont m_Font;
 527
 528     DECLARE_ABSTRACT_CLASS(wxHtmlFontCell)
 529     DECLARE_NO_COPY_CLASS(wxHtmlFontCell)
 530 };
 531
 532
 533
 534
 535
 536
 537 //--------------------------------------------------------------------------------
 538 // wxHtmlwidgetCell
 539 //                  This cell is connected with wxWindow object
 540 //                  You can use it to insert windows into HTML page
 541 //                  (buttons, input boxes etc.)
 542 //--------------------------------------------------------------------------------
 543
 544 class WXDLLIMPEXP_HTML wxHtmlWidgetCell : public wxHtmlCell
 545 {
 546 public:
 547     // !!! wnd must have correct parent!
 548     // if w != 0 then the m_Wnd has 'floating' width - it adjust
 549     // it's width according to parent container's width
 550     // (w is percent of parent's width)
 551     wxHtmlWidgetCell(wxWindow *wnd, int w = 0);
 552     ~wxHtmlWidgetCell() { m_Wnd->Destroy(); }
 553     virtual void Draw(wxDC& dc, int x, int y, int view_y1, int view_y2,
 554                       wxHtmlRenderingInfo& info);
 555     virtual void DrawInvisible(wxDC& dc, int x, int y,
 556                                wxHtmlRenderingInfo& info);
 557     virtual void Layout(int w);
 558
 559 protected:
 560     wxWindow* m_Wnd;
 561     int m_WidthFloat;
 562             // width float is used in adjustWidth (it is in percents)
 563
 564     DECLARE_ABSTRACT_CLASS(wxHtmlWidgetCell)
 565     DECLARE_NO_COPY_CLASS(wxHtmlWidgetCell)
 566 };
 567
 568
 569
 570 //--------------------------------------------------------------------------------
 571 // wxHtmlLinkInfo
 572 //                  Internal data structure. It represents hypertext link
 573 //--------------------------------------------------------------------------------
 574
 575 class WXDLLIMPEXP_HTML wxHtmlLinkInfo : public wxObject
 576 {
 577 public:
 578     wxHtmlLinkInfo() : wxObject()
 579           { m_Href = m_Target = wxEmptyString; m_Event = NULL, m_Cell = NULL; }
 580     wxHtmlLinkInfo(const wxString& href, const wxString& target = wxEmptyString) : wxObject()
 581           { m_Href = href; m_Target = target; m_Event = NULL, m_Cell = NULL; }
 582     wxHtmlLinkInfo(const wxHtmlLinkInfo& l) : wxObject()
 583           { m_Href = l.m_Href, m_Target = l.m_Target, m_Event = l.m_Event;
 584             m_Cell = l.m_Cell; }
 585     wxHtmlLinkInfo& operator=(const wxHtmlLinkInfo& l)
 586           { m_Href = l.m_Href, m_Target = l.m_Target, m_Event = l.m_Event;
 587             m_Cell = l.m_Cell; return *this; }
 588
 589     void SetEvent(const wxMouseEvent *e) { m_Event = e; }
 590     void SetHtmlCell(const wxHtmlCell *e) { m_Cell = e; }
 591
 592     wxString GetHref() const { return m_Href; }
 593     wxString GetTarget() const { return m_Target; }
 594     const wxMouseEvent* GetEvent() const { return m_Event; }
 595     const wxHtmlCell* GetHtmlCell() const { return m_Cell; }
 596
 597 private:
 598     wxString m_Href, m_Target;
 599     const wxMouseEvent *m_Event;
 600     const wxHtmlCell *m_Cell;
 601 };
 602
 603
 604
 605 // ----------------------------------------------------------------------------
 606 // wxHtmlTerminalCellsInterator
 607 // ----------------------------------------------------------------------------
 608
 609 class WXDLLIMPEXP_HTML wxHtmlTerminalCellsInterator
 610 {
 611 public:
 612     wxHtmlTerminalCellsInterator(const wxHtmlCell *from, const wxHtmlCell *to)
 613         : m_to(to), m_pos(from) {}
 614
 615     operator bool() const { return m_pos != NULL; }
 616     const wxHtmlCell* operator++();
 617     const wxHtmlCell* operator->() const { return m_pos; }
 618     const wxHtmlCell* operator*() const { return m_pos; }
 619
 620 private:
 621     const wxHtmlCell *m_to, *m_pos;
 622 };
 623
 624
 625
 626 #endif // wxUSE_HTML
 627
 628 #endif // _WX_HTMLCELL_H_
 629