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                                  wxArrayInt& known_pagebreaks) const;
 284
 285     // Sets cell's behaviour on pagebreaks (see AdjustPagebreak). Default
 286     // is true - the cell can be split on two pages
 287     void SetCanLiveOnPagebreak(bool can) { m_CanLiveOnPagebreak = can; }
 288
 289     // Can the line be broken before this cell?
 290     virtual bool IsLinebreakAllowed() const
 291         { return !IsFormattingCell(); }
 292
 293     // Returns true for simple == terminal cells, i.e. not composite ones.
 294     // This if for internal usage only and may disappear in future versions!
 295     virtual bool IsTerminalCell() const { return true; }
 296
 297     // Find a cell inside this cell positioned at the given coordinates
 298     // (relative to this's positions). Returns NULL if no such cell exists.
 299     // The flag can be used to specify whether to look for terminal or
 300     // nonterminal cells or both. In either case, returned cell is deepest
 301     // cell in cells tree that contains [x,y].
 302     virtual wxHtmlCell *FindCellByPos(wxCoord x, wxCoord y,
 303                                   unsigned flags = wxHTML_FIND_EXACT) const;
 304
 305     // Returns absolute position of the cell on HTML canvas.
 306     // If rootCell is provided, then it's considered to be the root of the
 307     // hierarchy and the returned value is relative to it.
 308     wxPoint GetAbsPos(wxHtmlCell *rootCell = NULL) const;
 309
 310     // Returns root cell of the hierarchy (i.e. grand-grand-...-parent that
 311     // doesn't have a parent itself)
 312     wxHtmlCell *GetRootCell() const;
 313
 314     // Returns first (last) terminal cell inside this cell. It may return NULL,
 315     // but it is rare -- only if there are no terminals in the tree.
 316     virtual wxHtmlCell *GetFirstTerminal() const
 317         { return wxConstCast(this, wxHtmlCell); }
 318     virtual wxHtmlCell *GetLastTerminal() const
 319         { return wxConstCast(this, wxHtmlCell); }
 320
 321     // Returns cell's depth, i.e. how far under the root cell it is
 322     // (if it is the root, depth is 0)
 323     unsigned GetDepth() const;
 324
 325     // Returns true if the cell appears before 'cell' in natural order of
 326     // cells (= as they are read). If cell A is (grand)parent of cell B,
 327     // then both A.IsBefore(B) and B.IsBefore(A) always return true.
 328     bool IsBefore(wxHtmlCell *cell) const;
 329
 330     // Converts the cell into text representation. If sel != NULL then
 331     // only part of the cell inside the selection is converted.
 332     virtual wxString ConvertToText(wxHtmlSelection *WXUNUSED(sel)) const
 333         { return wxEmptyString; }
 334
 335 protected:
 336     // pointer to the next cell
 337     wxHtmlCell *m_Next;
 338     // pointer to parent cell
 339     wxHtmlContainerCell *m_Parent;
 340
 341     // dimensions of fragment (m_Descent is used to position text & images)
 342     long m_Width, m_Height, m_Descent;
 343     // position where the fragment is drawn:
 344     long m_PosX, m_PosY;
 345
 346     // superscript/subscript/normal:
 347     wxHtmlScriptMode m_ScriptMode;
 348     long m_ScriptBaseline;
 349
 350     // destination address if this fragment is hypertext link, NULL otherwise
 351     wxHtmlLinkInfo *m_Link;
 352     // true if this cell can be placed on pagebreak, false otherwise
 353     bool m_CanLiveOnPagebreak;
 354     // unique identifier of the cell, generated from "id" property of tags
 355     wxString m_id;
 356
 357     DECLARE_ABSTRACT_CLASS(wxHtmlCell)
 358     wxDECLARE_NO_COPY_CLASS(wxHtmlCell);
 359 };
 360
 361
 362
 363
 364 // ----------------------------------------------------------------------------
 365 // Inherited cells:
 366 // ----------------------------------------------------------------------------
 367
 368
 369 // ----------------------------------------------------------------------------
 370 // wxHtmlWordCell
 371 //                  Single word in input stream.
 372 // ----------------------------------------------------------------------------
 373
 374 class WXDLLIMPEXP_HTML wxHtmlWordCell : public wxHtmlCell
 375 {
 376 public:
 377     wxHtmlWordCell(const wxString& word, const wxDC& dc);
 378     void Draw(wxDC& dc, int x, int y, int view_y1, int view_y2,
 379               wxHtmlRenderingInfo& info);
 380     virtual wxCursor GetMouseCursor(wxHtmlWindowInterface *window) const;
 381     virtual wxString ConvertToText(wxHtmlSelection *sel) const;
 382     bool IsLinebreakAllowed() const { return m_allowLinebreak; }
 383
 384     void SetPreviousWord(wxHtmlWordCell *cell);
 385
 386 protected:
 387     virtual wxString GetAllAsText() const
 388         { return m_Word; }
 389     virtual wxString GetPartAsText(int begin, int end) const
 390         { return m_Word.Mid(begin, end - begin); }
 391
 392     void SetSelectionPrivPos(const wxDC& dc, wxHtmlSelection *s) const;
 393     void Split(const wxDC& dc,
 394                const wxPoint& selFrom, const wxPoint& selTo,
 395                unsigned& pos1, unsigned& pos2) const;
 396
 397     wxString m_Word;
 398     bool     m_allowLinebreak;
 399
 400     DECLARE_ABSTRACT_CLASS(wxHtmlWordCell)
 401     wxDECLARE_NO_COPY_CLASS(wxHtmlWordCell);
 402 };
 403
 404
 405 // wxHtmlWordCell specialization for storing text fragments with embedded
 406 // '\t's; these differ from normal words in that the displayed text is
 407 // different from the text copied to clipboard
 408 class WXDLLIMPEXP_HTML wxHtmlWordWithTabsCell : public wxHtmlWordCell
 409 {
 410 public:
 411     wxHtmlWordWithTabsCell(const wxString& word,
 412                            const wxString& wordOrig,
 413                            size_t linepos,
 414                            const wxDC& dc)
 415         : wxHtmlWordCell(word, dc),
 416           m_wordOrig(wordOrig),
 417           m_linepos(linepos)
 418     {}
 419
 420 protected:
 421     virtual wxString GetAllAsText() const;
 422     virtual wxString GetPartAsText(int begin, int end) const;
 423
 424     wxString m_wordOrig;
 425     size_t   m_linepos;
 426 };
 427
 428
 429 // Container contains other cells, thus forming tree structure of rendering
 430 // elements. Basic code of layout algorithm is contained in this class.
 431 class WXDLLIMPEXP_HTML wxHtmlContainerCell : public wxHtmlCell
 432 {
 433 public:
 434     wxHtmlContainerCell(wxHtmlContainerCell *parent);
 435     virtual ~wxHtmlContainerCell();
 436
 437     virtual void Layout(int w);
 438     virtual void Draw(wxDC& dc, int x, int y, int view_y1, int view_y2,
 439                       wxHtmlRenderingInfo& info);
 440     virtual void DrawInvisible(wxDC& dc, int x, int y,
 441                                wxHtmlRenderingInfo& info);
 442 /*    virtual bool AdjustPagebreak(int *pagebreak, int *known_pagebreaks = NULL, int number_of_pages = 0) const;*/
 443     virtual bool AdjustPagebreak(int *pagebreak, wxArrayInt& known_pagebreaks) const;
 444
 445     // insert cell at the end of m_Cells list
 446     void InsertCell(wxHtmlCell *cell);
 447
 448     // sets horizontal/vertical alignment
 449     void SetAlignHor(int al) {m_AlignHor = al; m_LastLayout = -1;}
 450     int GetAlignHor() const {return m_AlignHor;}
 451     void SetAlignVer(int al) {m_AlignVer = al; m_LastLayout = -1;}
 452     int GetAlignVer() const {return m_AlignVer;}
 453
 454     // sets left-border indentation. units is one of wxHTML_UNITS_* constants
 455     // what is combination of wxHTML_INDENT_*
 456     void SetIndent(int i, int what, int units = wxHTML_UNITS_PIXELS);
 457     // returns the indentation. ind is one of wxHTML_INDENT_* constants
 458     int GetIndent(int ind) const;
 459     // returns type of value returned by GetIndent(ind)
 460     int GetIndentUnits(int ind) const;
 461
 462     // sets alignment info based on given tag's params
 463     void SetAlign(const wxHtmlTag& tag);
 464     // sets floating width adjustment
 465     // (examples : 32 percent of parent container,
 466     // -15 pixels percent (this means 100 % - 15 pixels)
 467     void SetWidthFloat(int w, int units) {m_WidthFloat = w; m_WidthFloatUnits = units; m_LastLayout = -1;}
 468     void SetWidthFloat(const wxHtmlTag& tag, double pixel_scale = 1.0);
 469     // sets minimal height of this container.
 470     void SetMinHeight(int h, int align = wxHTML_ALIGN_TOP) {m_MinHeight = h; m_MinHeightAlign = align; m_LastLayout = -1;}
 471
 472     void SetBackgroundColour(const wxColour& clr) {m_UseBkColour = true; m_BkColour = clr;}
 473     // returns background colour (of wxNullColour if none set), so that widgets can
 474     // adapt to it:
 475     wxColour GetBackgroundColour();
 476     void SetBorder(const wxColour& clr1, const wxColour& clr2, int border = 1) {m_Border = border; m_BorderColour1 = clr1, m_BorderColour2 = clr2;}
 477     virtual wxHtmlLinkInfo* GetLink(int x = 0, int y = 0) const;
 478     virtual const wxHtmlCell* Find(int condition, const void* param) const;
 479
 480 #if WXWIN_COMPATIBILITY_2_6
 481     // this was replaced by ProcessMouseClick, don't use in new code!
 482     virtual void OnMouseClick(wxWindow *window,
 483                               int x, int y, const wxMouseEvent& event);
 484 #endif
 485     virtual bool ProcessMouseClick(wxHtmlWindowInterface *window,
 486                                    const wxPoint& pos,
 487                                    const wxMouseEvent& event);
 488
 489     virtual wxHtmlCell* GetFirstChild() const { return m_Cells; }
 490
 491     // returns last child cell:
 492     wxHtmlCell* GetLastChild() const { return m_LastCell; }
 493
 494     // see comment in wxHtmlCell about this method
 495     virtual bool IsTerminalCell() const { return false; }
 496
 497     virtual wxHtmlCell *FindCellByPos(wxCoord x, wxCoord y,
 498                                   unsigned flags = wxHTML_FIND_EXACT) const;
 499
 500     virtual wxHtmlCell *GetFirstTerminal() const;
 501     virtual wxHtmlCell *GetLastTerminal() const;
 502
 503
 504     // Removes indentation on top or bottom of the container (i.e. above or
 505     // below first/last terminal cell). For internal use only.
 506     virtual void RemoveExtraSpacing(bool top, bool bottom);
 507
 508     // Returns the maximum possible length of the container.
 509     // Call Layout at least once before using GetMaxTotalWidth()
 510     virtual int GetMaxTotalWidth() const { return m_MaxTotalWidth; }
 511
 512 protected:
 513     void UpdateRenderingStatePre(wxHtmlRenderingInfo& info,
 514                                  wxHtmlCell *cell) const;
 515     void UpdateRenderingStatePost(wxHtmlRenderingInfo& info,
 516                                   wxHtmlCell *cell) const;
 517
 518 protected:
 519     int m_IndentLeft, m_IndentRight, m_IndentTop, m_IndentBottom;
 520             // indentation of subcells. There is always m_Indent pixels
 521             // big space between given border of the container and the subcells
 522             // it m_Indent < 0 it is in PERCENTS, otherwise it is in pixels
 523     int m_MinHeight, m_MinHeightAlign;
 524         // minimal height.
 525     wxHtmlCell *m_Cells, *m_LastCell;
 526             // internal cells, m_Cells points to the first of them, m_LastCell to the last one.
 527             // (LastCell is needed only to speed-up InsertCell)
 528     int m_AlignHor, m_AlignVer;
 529             // alignment horizontal and vertical (left, center, right)
 530     int m_WidthFloat, m_WidthFloatUnits;
 531             // width float is used in adjustWidth
 532     bool m_UseBkColour;
 533     wxColour m_BkColour;
 534             // background color of this container
 535     int m_Border;
 536             // border size. Draw only if m_Border > 0
 537     wxColour m_BorderColour1, m_BorderColour2;
 538             // borders color of this container
 539     int m_LastLayout;
 540             // if != -1 then call to Layout may be no-op
 541             // if previous call to Layout has same argument
 542     int m_MaxTotalWidth;
 543             // Maximum possible length if ignoring line wrap
 544
 545
 546     DECLARE_ABSTRACT_CLASS(wxHtmlContainerCell)
 547     wxDECLARE_NO_COPY_CLASS(wxHtmlContainerCell);
 548 };
 549
 550
 551
 552 // ---------------------------------------------------------------------------
 553 // wxHtmlColourCell
 554 //                  Color changer.
 555 // ---------------------------------------------------------------------------
 556
 557 class WXDLLIMPEXP_HTML wxHtmlColourCell : public wxHtmlCell
 558 {
 559 public:
 560     wxHtmlColourCell(const wxColour& clr, int flags = wxHTML_CLR_FOREGROUND) : wxHtmlCell() {m_Colour = clr; m_Flags = flags;}
 561     virtual void Draw(wxDC& dc, int x, int y, int view_y1, int view_y2,
 562                       wxHtmlRenderingInfo& info);
 563     virtual void DrawInvisible(wxDC& dc, int x, int y,
 564                                wxHtmlRenderingInfo& info);
 565
 566 protected:
 567     wxColour m_Colour;
 568     unsigned m_Flags;
 569
 570     DECLARE_ABSTRACT_CLASS(wxHtmlColourCell)
 571     wxDECLARE_NO_COPY_CLASS(wxHtmlColourCell);
 572 };
 573
 574
 575
 576
 577 //--------------------------------------------------------------------------------
 578 // wxHtmlFontCell
 579 //                  Sets actual font used for text rendering
 580 //--------------------------------------------------------------------------------
 581
 582 class WXDLLIMPEXP_HTML wxHtmlFontCell : public wxHtmlCell
 583 {
 584 public:
 585     wxHtmlFontCell(wxFont *font) : wxHtmlCell() { m_Font = (*font); }
 586     virtual void Draw(wxDC& dc, int x, int y, int view_y1, int view_y2,
 587                       wxHtmlRenderingInfo& info);
 588     virtual void DrawInvisible(wxDC& dc, int x, int y,
 589                                wxHtmlRenderingInfo& info);
 590
 591 protected:
 592     wxFont m_Font;
 593
 594     DECLARE_ABSTRACT_CLASS(wxHtmlFontCell)
 595     wxDECLARE_NO_COPY_CLASS(wxHtmlFontCell);
 596 };
 597
 598
 599
 600
 601
 602
 603 //--------------------------------------------------------------------------------
 604 // wxHtmlwidgetCell
 605 //                  This cell is connected with wxWindow object
 606 //                  You can use it to insert windows into HTML page
 607 //                  (buttons, input boxes etc.)
 608 //--------------------------------------------------------------------------------
 609
 610 class WXDLLIMPEXP_HTML wxHtmlWidgetCell : public wxHtmlCell
 611 {
 612 public:
 613     // !!! wnd must have correct parent!
 614     // if w != 0 then the m_Wnd has 'floating' width - it adjust
 615     // it's width according to parent container's width
 616     // (w is percent of parent's width)
 617     wxHtmlWidgetCell(wxWindow *wnd, int w = 0);
 618     virtual ~wxHtmlWidgetCell() { m_Wnd->Destroy(); }
 619     virtual void Draw(wxDC& dc, int x, int y, int view_y1, int view_y2,
 620                       wxHtmlRenderingInfo& info);
 621     virtual void DrawInvisible(wxDC& dc, int x, int y,
 622                                wxHtmlRenderingInfo& info);
 623     virtual void Layout(int w);
 624
 625 protected:
 626     wxWindow* m_Wnd;
 627     int m_WidthFloat;
 628             // width float is used in adjustWidth (it is in percents)
 629
 630     DECLARE_ABSTRACT_CLASS(wxHtmlWidgetCell)
 631     wxDECLARE_NO_COPY_CLASS(wxHtmlWidgetCell);
 632 };
 633
 634
 635
 636 //--------------------------------------------------------------------------------
 637 // wxHtmlLinkInfo
 638 //                  Internal data structure. It represents hypertext link
 639 //--------------------------------------------------------------------------------
 640
 641 class WXDLLIMPEXP_HTML wxHtmlLinkInfo : public wxObject
 642 {
 643 public:
 644     wxHtmlLinkInfo() : wxObject()
 645           { m_Href = m_Target = wxEmptyString; m_Event = NULL, m_Cell = NULL; }
 646     wxHtmlLinkInfo(const wxString& href, const wxString& target = wxEmptyString) : wxObject()
 647           { m_Href = href; m_Target = target; m_Event = NULL, m_Cell = NULL; }
 648     wxHtmlLinkInfo(const wxHtmlLinkInfo& l) : wxObject()
 649           { m_Href = l.m_Href, m_Target = l.m_Target, m_Event = l.m_Event;
 650             m_Cell = l.m_Cell; }
 651     wxHtmlLinkInfo& operator=(const wxHtmlLinkInfo& l)
 652           { m_Href = l.m_Href, m_Target = l.m_Target, m_Event = l.m_Event;
 653             m_Cell = l.m_Cell; return *this; }
 654
 655     void SetEvent(const wxMouseEvent *e) { m_Event = e; }
 656     void SetHtmlCell(const wxHtmlCell *e) { m_Cell = e; }
 657
 658     wxString GetHref() const { return m_Href; }
 659     wxString GetTarget() const { return m_Target; }
 660     const wxMouseEvent* GetEvent() const { return m_Event; }
 661     const wxHtmlCell* GetHtmlCell() const { return m_Cell; }
 662
 663 private:
 664     wxString m_Href, m_Target;
 665     const wxMouseEvent *m_Event;
 666     const wxHtmlCell *m_Cell;
 667 };
 668
 669
 670
 671 // ----------------------------------------------------------------------------
 672 // wxHtmlTerminalCellsInterator
 673 // ----------------------------------------------------------------------------
 674
 675 class WXDLLIMPEXP_HTML wxHtmlTerminalCellsInterator
 676 {
 677 public:
 678     wxHtmlTerminalCellsInterator(const wxHtmlCell *from, const wxHtmlCell *to)
 679         : m_to(to), m_pos(from) {}
 680
 681     operator bool() const { return m_pos != NULL; }
 682     const wxHtmlCell* operator++();
 683     const wxHtmlCell* operator->() const { return m_pos; }
 684     const wxHtmlCell* operator*() const { return m_pos; }
 685
 686 private:
 687     const wxHtmlCell *m_to, *m_pos;
 688 };
 689
 690
 691
 692 #endif // wxUSE_HTML
 693
 694 #endif // _WX_HTMLCELL_H_
 695