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     void SetBgMode(int m) { m_bgMode = m; }
  95     int GetBgMode() const { return m_bgMode; }
  96
  97 private:
  98     wxHtmlSelectionState  m_selState;
  99     wxColour              m_fgColour, m_bgColour;
 100     int                   m_bgMode;
 101 };
 102
 103
 104 // HTML rendering customization. This class is used when rendering wxHtmlCells
 105 // as a callback:
 106 class WXDLLIMPEXP_HTML wxHtmlRenderingStyle
 107 {
 108 public:
 109     virtual ~wxHtmlRenderingStyle() {}
 110     virtual wxColour GetSelectedTextColour(const wxColour& clr) = 0;
 111     virtual wxColour GetSelectedTextBgColour(const wxColour& clr) = 0;
 112 };
 113
 114 // Standard style:
 115 class WXDLLIMPEXP_HTML wxDefaultHtmlRenderingStyle : public wxHtmlRenderingStyle
 116 {
 117 public:
 118     virtual wxColour GetSelectedTextColour(const wxColour& clr);
 119     virtual wxColour GetSelectedTextBgColour(const wxColour& clr);
 120 };
 121
 122
 123 // Information given to cells when drawing them. Contains rendering state,
 124 // selection information and rendering style object that can be used to
 125 // customize the output.
 126 class WXDLLIMPEXP_HTML wxHtmlRenderingInfo
 127 {
 128 public:
 129     wxHtmlRenderingInfo() : m_selection(NULL), m_style(NULL) {}
 130
 131     void SetSelection(wxHtmlSelection *s) { m_selection = s; }
 132     wxHtmlSelection *GetSelection() const { return m_selection; }
 133
 134     void SetStyle(wxHtmlRenderingStyle *style) { m_style = style; }
 135     wxHtmlRenderingStyle& GetStyle() { return *m_style; }
 136
 137     wxHtmlRenderingState& GetState() { return m_state; }
 138
 139 protected:
 140     wxHtmlSelection      *m_selection;
 141     wxHtmlRenderingStyle *m_style;
 142     wxHtmlRenderingState m_state;
 143 };
 144
 145
 146 // Flags for wxHtmlCell::FindCellByPos
 147 enum
 148 {
 149     wxHTML_FIND_EXACT             = 1,
 150     wxHTML_FIND_NEAREST_BEFORE    = 2,
 151     wxHTML_FIND_NEAREST_AFTER     = 4
 152 };
 153
 154
 155 // Superscript/subscript/normal script mode of a cell
 156 enum wxHtmlScriptMode
 157 {
 158     wxHTML_SCRIPT_NORMAL,
 159     wxHTML_SCRIPT_SUB,
 160     wxHTML_SCRIPT_SUP
 161 };
 162
 163
 164 // ---------------------------------------------------------------------------
 165 // wxHtmlCell
 166 //                  Internal data structure. It represents fragments of parsed
 167 //                  HTML page - a word, picture, table, horizontal line and so
 168 //                  on.  It is used by wxHtmlWindow to represent HTML page in
 169 //                  memory.
 170 // ---------------------------------------------------------------------------
 171
 172
 173 class WXDLLIMPEXP_HTML wxHtmlCell : public wxObject
 174 {
 175 public:
 176     wxHtmlCell();
 177     virtual ~wxHtmlCell();
 178
 179     void SetParent(wxHtmlContainerCell *p) {m_Parent = p;}
 180     wxHtmlContainerCell *GetParent() const {return m_Parent;}
 181
 182     int GetPosX() const {return m_PosX;}
 183     int GetPosY() const {return m_PosY;}
 184     int GetWidth() const {return m_Width;}
 185
 186     // Returns the maximum possible length of the cell.
 187     // Call Layout at least once before using GetMaxTotalWidth()
 188     virtual int GetMaxTotalWidth() const { return m_Width; }
 189
 190     int GetHeight() const {return m_Height;}
 191     int GetDescent() const {return m_Descent;}
 192
 193     void SetScriptMode(wxHtmlScriptMode mode, long previousBase);
 194     wxHtmlScriptMode GetScriptMode() const { return m_ScriptMode; }
 195     long GetScriptBaseline() { return m_ScriptBaseline; }
 196
 197     // Formatting cells are not visible on the screen, they only alter
 198     // renderer's state.
 199     bool IsFormattingCell() const { return m_Width == 0 && m_Height == 0; }
 200
 201     const wxString& GetId() const { return m_id; }
 202     void SetId(const wxString& id) { m_id = id; }
 203
 204     // returns the link associated with this cell. The position is position
 205     // within the cell so it varies from 0 to m_Width, from 0 to m_Height
 206     virtual wxHtmlLinkInfo* GetLink(int WXUNUSED(x) = 0,
 207                                     int WXUNUSED(y) = 0) const
 208         { return m_Link; }
 209
 210     // Returns cursor to be used when mouse is over the cell:
 211     virtual wxCursor GetMouseCursor(wxHtmlWindowInterface *window) const;
 212
 213 #if WXWIN_COMPATIBILITY_2_6
 214     // this was replaced by GetMouseCursor, don't use in new code!
 215     virtual wxCursor GetCursor() const;
 216 #endif
 217
 218     // return next cell among parent's cells
 219     wxHtmlCell *GetNext() const {return m_Next;}
 220     // returns first child cell (if there are any, i.e. if this is container):
 221     virtual wxHtmlCell* GetFirstChild() const { return NULL; }
 222
 223     // members writing methods
 224     virtual void SetPos(int x, int y) {m_PosX = x, m_PosY = y;}
 225     void SetLink(const wxHtmlLinkInfo& link);
 226     void SetNext(wxHtmlCell *cell) {m_Next = cell;}
 227
 228     // 1. adjust cell's width according to the fact that maximal possible width
 229     //    is w.  (this has sense when working with horizontal lines, tables
 230     //    etc.)
 231     // 2. prepare layout (=fill-in m_PosX, m_PosY (and sometime m_Height)
 232     //    members) = place items to fit window, according to the width w
 233     virtual void Layout(int w);
 234
 235     // renders the cell
 236     virtual void Draw(wxDC& WXUNUSED(dc),
 237                       int WXUNUSED(x), int WXUNUSED(y),
 238                       int WXUNUSED(view_y1), int WXUNUSED(view_y2),
 239                       wxHtmlRenderingInfo& WXUNUSED(info)) {}
 240
 241     // proceed drawing actions in case the cell is not visible (scrolled out of
 242     // screen).  This is needed to change fonts, colors and so on.
 243     virtual void DrawInvisible(wxDC& WXUNUSED(dc),
 244                                int WXUNUSED(x), int WXUNUSED(y),
 245                                wxHtmlRenderingInfo& WXUNUSED(info)) {}
 246
 247     // This method returns pointer to the FIRST cell for that
 248     // the condition
 249     // is true. It first checks if the condition is true for this
 250     // cell and then calls m_Next->Find(). (Note: it checks
 251     // all subcells if the cell is container)
 252     // Condition is unique condition identifier (see htmldefs.h)
 253     // (user-defined condition IDs should start from 10000)
 254     // and param is optional parameter
 255     // Example : m_Cell->Find(wxHTML_COND_ISANCHOR, "news");
 256     //   returns pointer to anchor news
 257     virtual const wxHtmlCell* Find(int condition, const void* param) const;
 258
 259
 260     // This function is called when mouse button is clicked over the cell.
 261     // Returns true if a link is clicked, false otherwise.
 262     //
 263     // 'window' is pointer to wxHtmlWindowInterface of the window which
 264     // generated the event.
 265     // HINT: if this handling is not enough for you you should use
 266     //       wxHtmlWidgetCell
 267     virtual bool ProcessMouseClick(wxHtmlWindowInterface *window,
 268                                    const wxPoint& pos,
 269                                    const wxMouseEvent& event);
 270
 271 #if WXWIN_COMPATIBILITY_2_6
 272     // this was replaced by ProcessMouseClick, don't use in new code!
 273     virtual void OnMouseClick(wxWindow *window,
 274                               int x, int y, const wxMouseEvent& event);
 275 #endif
 276
 277     // This method used to adjust pagebreak position. The parameter is variable
 278     // that contains y-coordinate of page break (= horizontal line that should
 279     // not be crossed by words, images etc.). If this cell cannot be divided
 280     // into two pieces (each one on another page) then it moves the pagebreak
 281     // few pixels up.
 282     //
 283     // Returned value : true if pagebreak was modified, false otherwise
 284     // Usage : while (container->AdjustPagebreak(&p)) {}
 285     virtual bool AdjustPagebreak(int *pagebreak,
 286                                  const wxArrayInt& known_pagebreaks,
 287                                  int pageHeight) const;
 288
 289     // Sets cell's behaviour on pagebreaks (see AdjustPagebreak). Default
 290     // is true - the cell can be split on two pages
 291     // If there is no way to fit a cell in the current page size, the cell
 292     // is always split, ignoring this setting.
 293     void SetCanLiveOnPagebreak(bool can) { m_CanLiveOnPagebreak = can; }
 294
 295     // Can the line be broken before this cell?
 296     virtual bool IsLinebreakAllowed() const
 297         { return !IsFormattingCell(); }
 298
 299     // Returns true for simple == terminal cells, i.e. not composite ones.
 300     // This if for internal usage only and may disappear in future versions!
 301     virtual bool IsTerminalCell() const { return true; }
 302
 303     // Find a cell inside this cell positioned at the given coordinates
 304     // (relative to this's positions). Returns NULL if no such cell exists.
 305     // The flag can be used to specify whether to look for terminal or
 306     // nonterminal cells or both. In either case, returned cell is deepest
 307     // cell in cells tree that contains [x,y].
 308     virtual wxHtmlCell *FindCellByPos(wxCoord x, wxCoord y,
 309                                   unsigned flags = wxHTML_FIND_EXACT) const;
 310
 311     // Returns absolute position of the cell on HTML canvas.
 312     // If rootCell is provided, then it's considered to be the root of the
 313     // hierarchy and the returned value is relative to it.
 314     wxPoint GetAbsPos(wxHtmlCell *rootCell = NULL) const;
 315
 316     // Returns root cell of the hierarchy (i.e. grand-grand-...-parent that
 317     // doesn't have a parent itself)
 318     wxHtmlCell *GetRootCell() const;
 319
 320     // Returns first (last) terminal cell inside this cell. It may return NULL,
 321     // but it is rare -- only if there are no terminals in the tree.
 322     virtual wxHtmlCell *GetFirstTerminal() const
 323         { return wxConstCast(this, wxHtmlCell); }
 324     virtual wxHtmlCell *GetLastTerminal() const
 325         { return wxConstCast(this, wxHtmlCell); }
 326
 327     // Returns cell's depth, i.e. how far under the root cell it is
 328     // (if it is the root, depth is 0)
 329     unsigned GetDepth() const;
 330
 331     // Returns true if the cell appears before 'cell' in natural order of
 332     // cells (= as they are read). If cell A is (grand)parent of cell B,
 333     // then both A.IsBefore(B) and B.IsBefore(A) always return true.
 334     bool IsBefore(wxHtmlCell *cell) const;
 335
 336     // Converts the cell into text representation. If sel != NULL then
 337     // only part of the cell inside the selection is converted.
 338     virtual wxString ConvertToText(wxHtmlSelection *WXUNUSED(sel)) const
 339         { return wxEmptyString; }
 340
 341 protected:
 342     // pointer to the next cell
 343     wxHtmlCell *m_Next;
 344     // pointer to parent cell
 345     wxHtmlContainerCell *m_Parent;
 346
 347     // dimensions of fragment (m_Descent is used to position text & images)
 348     long m_Width, m_Height, m_Descent;
 349     // position where the fragment is drawn:
 350     long m_PosX, m_PosY;
 351
 352     // superscript/subscript/normal:
 353     wxHtmlScriptMode m_ScriptMode;
 354     long m_ScriptBaseline;
 355
 356     // destination address if this fragment is hypertext link, NULL otherwise
 357     wxHtmlLinkInfo *m_Link;
 358     // true if this cell can be placed on pagebreak, false otherwise
 359     bool m_CanLiveOnPagebreak;
 360     // unique identifier of the cell, generated from "id" property of tags
 361     wxString m_id;
 362
 363     DECLARE_ABSTRACT_CLASS(wxHtmlCell)
 364     wxDECLARE_NO_COPY_CLASS(wxHtmlCell);
 365 };
 366
 367
 368
 369
 370 // ----------------------------------------------------------------------------
 371 // Inherited cells:
 372 // ----------------------------------------------------------------------------
 373
 374
 375 // ----------------------------------------------------------------------------
 376 // wxHtmlWordCell
 377 //                  Single word in input stream.
 378 // ----------------------------------------------------------------------------
 379
 380 class WXDLLIMPEXP_HTML wxHtmlWordCell : public wxHtmlCell
 381 {
 382 public:
 383     wxHtmlWordCell(const wxString& word, const wxDC& dc);
 384     void Draw(wxDC& dc, int x, int y, int view_y1, int view_y2,
 385               wxHtmlRenderingInfo& info);
 386     virtual wxCursor GetMouseCursor(wxHtmlWindowInterface *window) const;
 387     virtual wxString ConvertToText(wxHtmlSelection *sel) const;
 388     bool IsLinebreakAllowed() const { return m_allowLinebreak; }
 389
 390     void SetPreviousWord(wxHtmlWordCell *cell);
 391
 392 protected:
 393     virtual wxString GetAllAsText() const
 394         { return m_Word; }
 395     virtual wxString GetPartAsText(int begin, int end) const
 396         { return m_Word.Mid(begin, end - begin); }
 397
 398     void SetSelectionPrivPos(const wxDC& dc, wxHtmlSelection *s) const;
 399     void Split(const wxDC& dc,
 400                const wxPoint& selFrom, const wxPoint& selTo,
 401                unsigned& pos1, unsigned& pos2) const;
 402
 403     wxString m_Word;
 404     bool     m_allowLinebreak;
 405
 406     DECLARE_ABSTRACT_CLASS(wxHtmlWordCell)
 407     wxDECLARE_NO_COPY_CLASS(wxHtmlWordCell);
 408 };
 409
 410
 411 // wxHtmlWordCell specialization for storing text fragments with embedded
 412 // '\t's; these differ from normal words in that the displayed text is
 413 // different from the text copied to clipboard
 414 class WXDLLIMPEXP_HTML wxHtmlWordWithTabsCell : public wxHtmlWordCell
 415 {
 416 public:
 417     wxHtmlWordWithTabsCell(const wxString& word,
 418                            const wxString& wordOrig,
 419                            size_t linepos,
 420                            const wxDC& dc)
 421         : wxHtmlWordCell(word, dc),
 422           m_wordOrig(wordOrig),
 423           m_linepos(linepos)
 424     {}
 425
 426 protected:
 427     virtual wxString GetAllAsText() const;
 428     virtual wxString GetPartAsText(int begin, int end) const;
 429
 430     wxString m_wordOrig;
 431     size_t   m_linepos;
 432 };
 433
 434
 435 // Container contains other cells, thus forming tree structure of rendering
 436 // elements. Basic code of layout algorithm is contained in this class.
 437 class WXDLLIMPEXP_HTML wxHtmlContainerCell : public wxHtmlCell
 438 {
 439 public:
 440     wxHtmlContainerCell(wxHtmlContainerCell *parent);
 441     virtual ~wxHtmlContainerCell();
 442
 443     virtual void Layout(int w);
 444     virtual void Draw(wxDC& dc, int x, int y, int view_y1, int view_y2,
 445                       wxHtmlRenderingInfo& info);
 446     virtual void DrawInvisible(wxDC& dc, int x, int y,
 447                                wxHtmlRenderingInfo& info);
 448
 449     virtual bool AdjustPagebreak(int *pagebreak,
 450                                  const wxArrayInt& known_pagebreaks,
 451                                  int pageHeight) const;
 452
 453     // insert cell at the end of m_Cells list
 454     void InsertCell(wxHtmlCell *cell);
 455
 456     // sets horizontal/vertical alignment
 457     void SetAlignHor(int al) {m_AlignHor = al; m_LastLayout = -1;}
 458     int GetAlignHor() const {return m_AlignHor;}
 459     void SetAlignVer(int al) {m_AlignVer = al; m_LastLayout = -1;}
 460     int GetAlignVer() const {return m_AlignVer;}
 461
 462     // sets left-border indentation. units is one of wxHTML_UNITS_* constants
 463     // what is combination of wxHTML_INDENT_*
 464     void SetIndent(int i, int what, int units = wxHTML_UNITS_PIXELS);
 465     // returns the indentation. ind is one of wxHTML_INDENT_* constants
 466     int GetIndent(int ind) const;
 467     // returns type of value returned by GetIndent(ind)
 468     int GetIndentUnits(int ind) const;
 469
 470     // sets alignment info based on given tag's params
 471     void SetAlign(const wxHtmlTag& tag);
 472     // sets floating width adjustment
 473     // (examples : 32 percent of parent container,
 474     // -15 pixels percent (this means 100 % - 15 pixels)
 475     void SetWidthFloat(int w, int units) {m_WidthFloat = w; m_WidthFloatUnits = units; m_LastLayout = -1;}
 476     void SetWidthFloat(const wxHtmlTag& tag, double pixel_scale = 1.0);
 477     // sets minimal height of this container.
 478     void SetMinHeight(int h, int align = wxHTML_ALIGN_TOP) {m_MinHeight = h; m_MinHeightAlign = align; m_LastLayout = -1;}
 479
 480     void SetBackgroundColour(const wxColour& clr) {m_UseBkColour = true; m_BkColour = clr;}
 481     // returns background colour (of wxNullColour if none set), so that widgets can
 482     // adapt to it:
 483     wxColour GetBackgroundColour();
 484     void SetBorder(const wxColour& clr1, const wxColour& clr2, int border = 1) {m_Border = border; m_BorderColour1 = clr1, m_BorderColour2 = clr2;}
 485     virtual wxHtmlLinkInfo* GetLink(int x = 0, int y = 0) const;
 486     virtual const wxHtmlCell* Find(int condition, const void* param) const;
 487
 488 #if WXWIN_COMPATIBILITY_2_6
 489     // this was replaced by ProcessMouseClick, don't use in new code!
 490     virtual void OnMouseClick(wxWindow *window,
 491                               int x, int y, const wxMouseEvent& event);
 492 #endif
 493     virtual bool ProcessMouseClick(wxHtmlWindowInterface *window,
 494                                    const wxPoint& pos,
 495                                    const wxMouseEvent& event);
 496
 497     virtual wxHtmlCell* GetFirstChild() const { return m_Cells; }
 498
 499     // returns last child cell:
 500     wxHtmlCell* GetLastChild() const { return m_LastCell; }
 501
 502     // see comment in wxHtmlCell about this method
 503     virtual bool IsTerminalCell() const { return false; }
 504
 505     virtual wxHtmlCell *FindCellByPos(wxCoord x, wxCoord y,
 506                                   unsigned flags = wxHTML_FIND_EXACT) const;
 507
 508     virtual wxHtmlCell *GetFirstTerminal() const;
 509     virtual wxHtmlCell *GetLastTerminal() const;
 510
 511
 512     // Removes indentation on top or bottom of the container (i.e. above or
 513     // below first/last terminal cell). For internal use only.
 514     virtual void RemoveExtraSpacing(bool top, bool bottom);
 515
 516     // Returns the maximum possible length of the container.
 517     // Call Layout at least once before using GetMaxTotalWidth()
 518     virtual int GetMaxTotalWidth() const { return m_MaxTotalWidth; }
 519
 520 protected:
 521     void UpdateRenderingStatePre(wxHtmlRenderingInfo& info,
 522                                  wxHtmlCell *cell) const;
 523     void UpdateRenderingStatePost(wxHtmlRenderingInfo& info,
 524                                   wxHtmlCell *cell) const;
 525
 526 protected:
 527     int m_IndentLeft, m_IndentRight, m_IndentTop, m_IndentBottom;
 528             // indentation of subcells. There is always m_Indent pixels
 529             // big space between given border of the container and the subcells
 530             // it m_Indent < 0 it is in PERCENTS, otherwise it is in pixels
 531     int m_MinHeight, m_MinHeightAlign;
 532         // minimal height.
 533     wxHtmlCell *m_Cells, *m_LastCell;
 534             // internal cells, m_Cells points to the first of them, m_LastCell to the last one.
 535             // (LastCell is needed only to speed-up InsertCell)
 536     int m_AlignHor, m_AlignVer;
 537             // alignment horizontal and vertical (left, center, right)
 538     int m_WidthFloat, m_WidthFloatUnits;
 539             // width float is used in adjustWidth
 540     bool m_UseBkColour;
 541     wxColour m_BkColour;
 542             // background color of this container
 543     int m_Border;
 544             // border size. Draw only if m_Border > 0
 545     wxColour m_BorderColour1, m_BorderColour2;
 546             // borders color of this container
 547     int m_LastLayout;
 548             // if != -1 then call to Layout may be no-op
 549             // if previous call to Layout has same argument
 550     int m_MaxTotalWidth;
 551             // Maximum possible length if ignoring line wrap
 552
 553
 554     DECLARE_ABSTRACT_CLASS(wxHtmlContainerCell)
 555     wxDECLARE_NO_COPY_CLASS(wxHtmlContainerCell);
 556 };
 557
 558
 559
 560 // ---------------------------------------------------------------------------
 561 // wxHtmlColourCell
 562 //                  Color changer.
 563 // ---------------------------------------------------------------------------
 564
 565 class WXDLLIMPEXP_HTML wxHtmlColourCell : public wxHtmlCell
 566 {
 567 public:
 568     wxHtmlColourCell(const wxColour& clr, int flags = wxHTML_CLR_FOREGROUND) : wxHtmlCell() {m_Colour = clr; m_Flags = flags;}
 569     virtual void Draw(wxDC& dc, int x, int y, int view_y1, int view_y2,
 570                       wxHtmlRenderingInfo& info);
 571     virtual void DrawInvisible(wxDC& dc, int x, int y,
 572                                wxHtmlRenderingInfo& info);
 573
 574 protected:
 575     wxColour m_Colour;
 576     unsigned m_Flags;
 577
 578     DECLARE_ABSTRACT_CLASS(wxHtmlColourCell)
 579     wxDECLARE_NO_COPY_CLASS(wxHtmlColourCell);
 580 };
 581
 582
 583
 584
 585 //--------------------------------------------------------------------------------
 586 // wxHtmlFontCell
 587 //                  Sets actual font used for text rendering
 588 //--------------------------------------------------------------------------------
 589
 590 class WXDLLIMPEXP_HTML wxHtmlFontCell : public wxHtmlCell
 591 {
 592 public:
 593     wxHtmlFontCell(wxFont *font) : wxHtmlCell() { m_Font = (*font); }
 594     virtual void Draw(wxDC& dc, int x, int y, int view_y1, int view_y2,
 595                       wxHtmlRenderingInfo& info);
 596     virtual void DrawInvisible(wxDC& dc, int x, int y,
 597                                wxHtmlRenderingInfo& info);
 598
 599 protected:
 600     wxFont m_Font;
 601
 602     DECLARE_ABSTRACT_CLASS(wxHtmlFontCell)
 603     wxDECLARE_NO_COPY_CLASS(wxHtmlFontCell);
 604 };
 605
 606
 607
 608
 609
 610
 611 //--------------------------------------------------------------------------------
 612 // wxHtmlwidgetCell
 613 //                  This cell is connected with wxWindow object
 614 //                  You can use it to insert windows into HTML page
 615 //                  (buttons, input boxes etc.)
 616 //--------------------------------------------------------------------------------
 617
 618 class WXDLLIMPEXP_HTML wxHtmlWidgetCell : public wxHtmlCell
 619 {
 620 public:
 621     // !!! wnd must have correct parent!
 622     // if w != 0 then the m_Wnd has 'floating' width - it adjust
 623     // it's width according to parent container's width
 624     // (w is percent of parent's width)
 625     wxHtmlWidgetCell(wxWindow *wnd, int w = 0);
 626     virtual ~wxHtmlWidgetCell() { m_Wnd->Destroy(); }
 627     virtual void Draw(wxDC& dc, int x, int y, int view_y1, int view_y2,
 628                       wxHtmlRenderingInfo& info);
 629     virtual void DrawInvisible(wxDC& dc, int x, int y,
 630                                wxHtmlRenderingInfo& info);
 631     virtual void Layout(int w);
 632
 633 protected:
 634     wxWindow* m_Wnd;
 635     int m_WidthFloat;
 636             // width float is used in adjustWidth (it is in percents)
 637
 638     DECLARE_ABSTRACT_CLASS(wxHtmlWidgetCell)
 639     wxDECLARE_NO_COPY_CLASS(wxHtmlWidgetCell);
 640 };
 641
 642
 643
 644 //--------------------------------------------------------------------------------
 645 // wxHtmlLinkInfo
 646 //                  Internal data structure. It represents hypertext link
 647 //--------------------------------------------------------------------------------
 648
 649 class WXDLLIMPEXP_HTML wxHtmlLinkInfo : public wxObject
 650 {
 651 public:
 652     wxHtmlLinkInfo() : wxObject()
 653           { m_Href = m_Target = wxEmptyString; m_Event = NULL, m_Cell = NULL; }
 654     wxHtmlLinkInfo(const wxString& href, const wxString& target = wxEmptyString) : wxObject()
 655           { m_Href = href; m_Target = target; m_Event = NULL, m_Cell = NULL; }
 656     wxHtmlLinkInfo(const wxHtmlLinkInfo& l) : wxObject()
 657           { m_Href = l.m_Href, m_Target = l.m_Target, m_Event = l.m_Event;
 658             m_Cell = l.m_Cell; }
 659     wxHtmlLinkInfo& operator=(const wxHtmlLinkInfo& l)
 660           { m_Href = l.m_Href, m_Target = l.m_Target, m_Event = l.m_Event;
 661             m_Cell = l.m_Cell; return *this; }
 662
 663     void SetEvent(const wxMouseEvent *e) { m_Event = e; }
 664     void SetHtmlCell(const wxHtmlCell *e) { m_Cell = e; }
 665
 666     wxString GetHref() const { return m_Href; }
 667     wxString GetTarget() const { return m_Target; }
 668     const wxMouseEvent* GetEvent() const { return m_Event; }
 669     const wxHtmlCell* GetHtmlCell() const { return m_Cell; }
 670
 671 private:
 672     wxString m_Href, m_Target;
 673     const wxMouseEvent *m_Event;
 674     const wxHtmlCell *m_Cell;
 675 };
 676
 677
 678
 679 // ----------------------------------------------------------------------------
 680 // wxHtmlTerminalCellsInterator
 681 // ----------------------------------------------------------------------------
 682
 683 class WXDLLIMPEXP_HTML wxHtmlTerminalCellsInterator
 684 {
 685 public:
 686     wxHtmlTerminalCellsInterator(const wxHtmlCell *from, const wxHtmlCell *to)
 687         : m_to(to), m_pos(from) {}
 688
 689     operator bool() const { return m_pos != NULL; }
 690     const wxHtmlCell* operator++();
 691     const wxHtmlCell* operator->() const { return m_pos; }
 692     const wxHtmlCell* operator*() const { return m_pos; }
 693
 694 private:
 695     const wxHtmlCell *m_to, *m_pos;
 696 };
 697
 698
 699
 700 #endif // wxUSE_HTML
 701
 702 #endif // _WX_HTMLCELL_H_
 703