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