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_HTML wxHtmlWindowInterface;
  24 class WXDLLIMPEXP_HTML wxHtmlLinkInfo;
  25 class WXDLLIMPEXP_HTML wxHtmlCell;
  26 class WXDLLIMPEXP_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 GetCursor() const;
 206
 207     // return next cell among parent's cells
 208     wxHtmlCell *GetNext() const {return m_Next;}
 209     // returns first child cell (if there are any, i.e. if this is container):
 210     virtual wxHtmlCell* GetFirstChild() const { return NULL; }
 211
 212     // members writing methods
 213     virtual void SetPos(int x, int y) {m_PosX = x, m_PosY = y;}
 214     void SetLink(const wxHtmlLinkInfo& link);
 215     void SetNext(wxHtmlCell *cell) {m_Next = cell;}
 216
 217     // 1. adjust cell's width according to the fact that maximal possible width
 218     //    is w.  (this has sense when working with horizontal lines, tables
 219     //    etc.)
 220     // 2. prepare layout (=fill-in m_PosX, m_PosY (and sometime m_Height)
 221     //    members) = place items to fit window, according to the width w
 222     virtual void Layout(int w);
 223
 224     // renders the cell
 225     virtual void Draw(wxDC& WXUNUSED(dc),
 226                       int WXUNUSED(x), int WXUNUSED(y),
 227                       int WXUNUSED(view_y1), int WXUNUSED(view_y2),
 228                       wxHtmlRenderingInfo& WXUNUSED(info)) {}
 229
 230     // proceed drawing actions in case the cell is not visible (scrolled out of
 231     // screen).  This is needed to change fonts, colors and so on.
 232     virtual void DrawInvisible(wxDC& WXUNUSED(dc),
 233                                int WXUNUSED(x), int WXUNUSED(y),
 234                                wxHtmlRenderingInfo& WXUNUSED(info)) {}
 235
 236     // This method returns pointer to the FIRST cell for that
 237     // the condition
 238     // is true. It first checks if the condition is true for this
 239     // cell and then calls m_Next->Find(). (Note: it checks
 240     // all subcells if the cell is container)
 241     // Condition is unique condition identifier (see htmldefs.h)
 242     // (user-defined condition IDs should start from 10000)
 243     // and param is optional parameter
 244     // Example : m_Cell->Find(wxHTML_COND_ISANCHOR, "news");
 245     //   returns pointer to anchor news
 246     virtual const wxHtmlCell* Find(int condition, const void* param) const;
 247
 248
 249     // This function is called when mouse button is clicked over the cell.
 250     // Returns true if a link is clicked, false otherwise.
 251     //
 252     // 'window' is pointer to wxHtmlWindowInterface of the window which
 253     // generated the event.
 254     // HINT: if this handling is not enough for you you should use
 255     //       wxHtmlWidgetCell
 256     virtual bool ProcessMouseClick(wxHtmlWindowInterface *window,
 257                                    const wxPoint& pos,
 258                                    const wxMouseEvent& event);
 259
 260 #if WXWIN_COMPATIBILITY_2_6
 261     // this was replaced by ProcessMouseClick, don't use in new code!
 262     virtual void OnMouseClick(wxWindow *window,
 263                               int x, int y, const wxMouseEvent& event);
 264 #endif
 265
 266     // This method used to adjust pagebreak position. The parameter is variable
 267     // that contains y-coordinate of page break (= horizontal line that should
 268     // not be crossed by words, images etc.). If this cell cannot be divided
 269     // into two pieces (each one on another page) then it moves the pagebreak
 270     // few pixels up.
 271     //
 272     // Returned value : true if pagebreak was modified, false otherwise
 273     // Usage : while (container->AdjustPagebreak(&p)) {}
 274     virtual bool AdjustPagebreak(int *pagebreak,
 275                                  int *known_pagebreaks = NULL,
 276                                  int number_of_pages = 0) const;
 277
 278     // Sets cell's behaviour on pagebreaks (see AdjustPagebreak). Default
 279     // is true - the cell can be split on two pages
 280     void SetCanLiveOnPagebreak(bool can) { m_CanLiveOnPagebreak = can; }
 281
 282     // Can the line be broken before this cell?
 283     virtual bool IsLinebreakAllowed() const
 284         { return !IsFormattingCell(); }
 285
 286     // Returns true for simple == terminal cells, i.e. not composite ones.
 287     // This if for internal usage only and may disappear in future versions!
 288     virtual bool IsTerminalCell() const { return true; }
 289
 290     // Find a cell inside this cell positioned at the given coordinates
 291     // (relative to this's positions). Returns NULL if no such cell exists.
 292     // The flag can be used to specify whether to look for terminal or
 293     // nonterminal cells or both. In either case, returned cell is deepest
 294     // cell in cells tree that contains [x,y].
 295     virtual wxHtmlCell *FindCellByPos(wxCoord x, wxCoord y,
 296                                   unsigned flags = wxHTML_FIND_EXACT) const;
 297
 298     // Returns absolute position of the cell on HTML canvas.
 299     // If rootCell is provided, then it's considered to be the root of the
 300     // hierarchy and the returned value is relative to it.
 301     wxPoint GetAbsPos(wxHtmlCell *rootCell = NULL) const;
 302
 303     // Returns root cell of the hierarchy (i.e. grand-grand-...-parent that
 304     // doesn't have a parent itself)
 305     wxHtmlCell *GetRootCell() const;
 306
 307     // Returns first (last) terminal cell inside this cell. It may return NULL,
 308     // but it is rare -- only if there are no terminals in the tree.
 309     virtual wxHtmlCell *GetFirstTerminal() const
 310         { return wxConstCast(this, wxHtmlCell); }
 311     virtual wxHtmlCell *GetLastTerminal() const
 312         { return wxConstCast(this, wxHtmlCell); }
 313
 314     // Returns cell's depth, i.e. how far under the root cell it is
 315     // (if it is the root, depth is 0)
 316     unsigned GetDepth() const;
 317
 318     // Returns true if the cell appears before 'cell' in natural order of
 319     // cells (= as they are read). If cell A is (grand)parent of cell B,
 320     // then both A.IsBefore(B) and B.IsBefore(A) always return true.
 321     bool IsBefore(wxHtmlCell *cell) const;
 322
 323     // Converts the cell into text representation. If sel != NULL then
 324     // only part of the cell inside the selection is converted.
 325     virtual wxString ConvertToText(wxHtmlSelection *WXUNUSED(sel)) const
 326         { return wxEmptyString; }
 327
 328 protected:
 329     // pointer to the next cell
 330     wxHtmlCell *m_Next;
 331     // pointer to parent cell
 332     wxHtmlContainerCell *m_Parent;
 333
 334     // dimensions of fragment (m_Descent is used to position text & images)
 335     long m_Width, m_Height, m_Descent;
 336     // position where the fragment is drawn:
 337     long m_PosX, m_PosY;
 338
 339     // superscript/subscript/normal:
 340     wxHtmlScriptMode m_ScriptMode;
 341     long m_ScriptBaseline;
 342
 343     // destination address if this fragment is hypertext link, NULL otherwise
 344     wxHtmlLinkInfo *m_Link;
 345     // true if this cell can be placed on pagebreak, false otherwise
 346     bool m_CanLiveOnPagebreak;
 347     // unique identifier of the cell, generated from "id" property of tags
 348     wxString m_id;
 349
 350     DECLARE_ABSTRACT_CLASS(wxHtmlCell)
 351     DECLARE_NO_COPY_CLASS(wxHtmlCell)
 352 };
 353
 354
 355
 356
 357 // ----------------------------------------------------------------------------
 358 // Inherited cells:
 359 // ----------------------------------------------------------------------------
 360
 361
 362 // ----------------------------------------------------------------------------
 363 // wxHtmlWordCell
 364 //                  Single word in input stream.
 365 // ----------------------------------------------------------------------------
 366
 367 class WXDLLIMPEXP_HTML wxHtmlWordCell : public wxHtmlCell
 368 {
 369 public:
 370     wxHtmlWordCell(const wxString& word, const wxDC& dc);
 371     void Draw(wxDC& dc, int x, int y, int view_y1, int view_y2,
 372               wxHtmlRenderingInfo& info);
 373     wxCursor GetCursor() const;
 374     wxString ConvertToText(wxHtmlSelection *sel) const;
 375     bool IsLinebreakAllowed() const { return m_allowLinebreak; }
 376
 377     void SetPreviousWord(wxHtmlWordCell *cell);
 378
 379 protected:
 380     void SetSelectionPrivPos(const wxDC& dc, wxHtmlSelection *s) const;
 381     void Split(const wxDC& dc,
 382                const wxPoint& selFrom, const wxPoint& selTo,
 383                unsigned& pos1, unsigned& pos2) const;
 384
 385     wxString m_Word;
 386     bool     m_allowLinebreak;
 387
 388     DECLARE_ABSTRACT_CLASS(wxHtmlWordCell)
 389     DECLARE_NO_COPY_CLASS(wxHtmlWordCell)
 390 };
 391
 392
 393
 394
 395
 396 // Container contains other cells, thus forming tree structure of rendering
 397 // elements. Basic code of layout algorithm is contained in this class.
 398 class WXDLLIMPEXP_HTML wxHtmlContainerCell : public wxHtmlCell
 399 {
 400 public:
 401     wxHtmlContainerCell(wxHtmlContainerCell *parent);
 402     ~wxHtmlContainerCell();
 403
 404     virtual void Layout(int w);
 405     virtual void Draw(wxDC& dc, int x, int y, int view_y1, int view_y2,
 406                       wxHtmlRenderingInfo& info);
 407     virtual void DrawInvisible(wxDC& dc, int x, int y,
 408                                wxHtmlRenderingInfo& info);
 409     virtual bool AdjustPagebreak(int *pagebreak, int *known_pagebreaks = NULL, int number_of_pages = 0) const;
 410
 411     // insert cell at the end of m_Cells list
 412     void InsertCell(wxHtmlCell *cell);
 413
 414     // sets horizontal/vertical alignment
 415     void SetAlignHor(int al) {m_AlignHor = al; m_LastLayout = -1;}
 416     int GetAlignHor() const {return m_AlignHor;}
 417     void SetAlignVer(int al) {m_AlignVer = al; m_LastLayout = -1;}
 418     int GetAlignVer() const {return m_AlignVer;}
 419
 420     // sets left-border indentation. units is one of wxHTML_UNITS_* constants
 421     // what is combination of wxHTML_INDENT_*
 422     void SetIndent(int i, int what, int units = wxHTML_UNITS_PIXELS);
 423     // returns the indentation. ind is one of wxHTML_INDENT_* constants
 424     int GetIndent(int ind) const;
 425     // returns type of value returned by GetIndent(ind)
 426     int GetIndentUnits(int ind) const;
 427
 428     // sets alignment info based on given tag's params
 429     void SetAlign(const wxHtmlTag& tag);
 430     // sets floating width adjustment
 431     // (examples : 32 percent of parent container,
 432     // -15 pixels percent (this means 100 % - 15 pixels)
 433     void SetWidthFloat(int w, int units) {m_WidthFloat = w; m_WidthFloatUnits = units; m_LastLayout = -1;}
 434     void SetWidthFloat(const wxHtmlTag& tag, double pixel_scale = 1.0);
 435     // sets minimal height of this container.
 436     void SetMinHeight(int h, int align = wxHTML_ALIGN_TOP) {m_MinHeight = h; m_MinHeightAlign = align; m_LastLayout = -1;}
 437
 438     void SetBackgroundColour(const wxColour& clr) {m_UseBkColour = true; m_BkColour = clr;}
 439     // returns background colour (of wxNullColour if none set), so that widgets can
 440     // adapt to it:
 441     wxColour GetBackgroundColour();
 442     void SetBorder(const wxColour& clr1, const wxColour& clr2) {m_UseBorder = true; m_BorderColour1 = clr1, m_BorderColour2 = clr2;}
 443     virtual wxHtmlLinkInfo* GetLink(int x = 0, int y = 0) const;
 444     virtual const wxHtmlCell* Find(int condition, const void* param) const;
 445
 446 #if WXWIN_COMPATIBILITY_2_6
 447     // this was replaced by ProcessMouseClick, don't use in new code!
 448     virtual void OnMouseClick(wxWindow *window,
 449                               int x, int y, const wxMouseEvent& event);
 450 #endif
 451     virtual bool ProcessMouseClick(wxHtmlWindowInterface *window,
 452                                    const wxPoint& pos,
 453                                    const wxMouseEvent& event);
 454
 455     virtual wxHtmlCell* GetFirstChild() const { return m_Cells; }
 456 #if WXWIN_COMPATIBILITY_2_4
 457     wxDEPRECATED( wxHtmlCell* GetFirstCell() const );
 458 #endif
 459     // returns last child cell:
 460     wxHtmlCell* GetLastChild() const { return m_LastCell; }
 461
 462     // see comment in wxHtmlCell about this method
 463     virtual bool IsTerminalCell() const { return false; }
 464
 465     virtual wxHtmlCell *FindCellByPos(wxCoord x, wxCoord y,
 466                                   unsigned flags = wxHTML_FIND_EXACT) const;
 467
 468     virtual wxHtmlCell *GetFirstTerminal() const;
 469     virtual wxHtmlCell *GetLastTerminal() const;
 470
 471
 472     // Removes indentation on top or bottom of the container (i.e. above or
 473     // below first/last terminal cell). For internal use only.
 474     virtual void RemoveExtraSpacing(bool top, bool bottom);
 475
 476     // Returns the maximum possible length of the container.
 477     // Call Layout at least once before using GetMaxTotalWidth()
 478     virtual int GetMaxTotalWidth() const { return m_MaxTotalWidth; }
 479
 480 protected:
 481     void UpdateRenderingStatePre(wxHtmlRenderingInfo& info,
 482                                  wxHtmlCell *cell) const;
 483     void UpdateRenderingStatePost(wxHtmlRenderingInfo& info,
 484                                   wxHtmlCell *cell) const;
 485
 486 protected:
 487     int m_IndentLeft, m_IndentRight, m_IndentTop, m_IndentBottom;
 488             // indentation of subcells. There is always m_Indent pixels
 489             // big space between given border of the container and the subcells
 490             // it m_Indent < 0 it is in PERCENTS, otherwise it is in pixels
 491     int m_MinHeight, m_MinHeightAlign;
 492         // minimal height.
 493     wxHtmlCell *m_Cells, *m_LastCell;
 494             // internal cells, m_Cells points to the first of them, m_LastCell to the last one.
 495             // (LastCell is needed only to speed-up InsertCell)
 496     int m_AlignHor, m_AlignVer;
 497             // alignment horizontal and vertical (left, center, right)
 498     int m_WidthFloat, m_WidthFloatUnits;
 499             // width float is used in adjustWidth
 500     bool m_UseBkColour;
 501     wxColour m_BkColour;
 502             // background color of this container
 503     bool m_UseBorder;
 504     wxColour m_BorderColour1, m_BorderColour2;
 505             // borders color of this container
 506     int m_LastLayout;
 507             // if != -1 then call to Layout may be no-op
 508             // if previous call to Layout has same argument
 509     int m_MaxTotalWidth;
 510             // Maximum possible length if ignoring line wrap
 511
 512
 513     DECLARE_ABSTRACT_CLASS(wxHtmlContainerCell)
 514     DECLARE_NO_COPY_CLASS(wxHtmlContainerCell)
 515 };
 516
 517 #if WXWIN_COMPATIBILITY_2_4
 518 inline wxHtmlCell* wxHtmlContainerCell::GetFirstCell() const
 519     { return GetFirstChild(); }
 520 #endif
 521
 522
 523
 524
 525 // ---------------------------------------------------------------------------
 526 // wxHtmlColourCell
 527 //                  Color changer.
 528 // ---------------------------------------------------------------------------
 529
 530 class WXDLLIMPEXP_HTML wxHtmlColourCell : public wxHtmlCell
 531 {
 532 public:
 533     wxHtmlColourCell(const wxColour& clr, int flags = wxHTML_CLR_FOREGROUND) : wxHtmlCell() {m_Colour = clr; m_Flags = flags;}
 534     virtual void Draw(wxDC& dc, int x, int y, int view_y1, int view_y2,
 535                       wxHtmlRenderingInfo& info);
 536     virtual void DrawInvisible(wxDC& dc, int x, int y,
 537                                wxHtmlRenderingInfo& info);
 538
 539 protected:
 540     wxColour m_Colour;
 541     unsigned m_Flags;
 542
 543     DECLARE_ABSTRACT_CLASS(wxHtmlColourCell)
 544     DECLARE_NO_COPY_CLASS(wxHtmlColourCell)
 545 };
 546
 547
 548
 549
 550 //--------------------------------------------------------------------------------
 551 // wxHtmlFontCell
 552 //                  Sets actual font used for text rendering
 553 //--------------------------------------------------------------------------------
 554
 555 class WXDLLIMPEXP_HTML wxHtmlFontCell : public wxHtmlCell
 556 {
 557 public:
 558     wxHtmlFontCell(wxFont *font) : wxHtmlCell() { m_Font = (*font); }
 559     virtual void Draw(wxDC& dc, int x, int y, int view_y1, int view_y2,
 560                       wxHtmlRenderingInfo& info);
 561     virtual void DrawInvisible(wxDC& dc, int x, int y,
 562                                wxHtmlRenderingInfo& info);
 563
 564 protected:
 565     wxFont m_Font;
 566
 567     DECLARE_ABSTRACT_CLASS(wxHtmlFontCell)
 568     DECLARE_NO_COPY_CLASS(wxHtmlFontCell)
 569 };
 570
 571
 572
 573
 574
 575
 576 //--------------------------------------------------------------------------------
 577 // wxHtmlwidgetCell
 578 //                  This cell is connected with wxWindow object
 579 //                  You can use it to insert windows into HTML page
 580 //                  (buttons, input boxes etc.)
 581 //--------------------------------------------------------------------------------
 582
 583 class WXDLLIMPEXP_HTML wxHtmlWidgetCell : public wxHtmlCell
 584 {
 585 public:
 586     // !!! wnd must have correct parent!
 587     // if w != 0 then the m_Wnd has 'floating' width - it adjust
 588     // it's width according to parent container's width
 589     // (w is percent of parent's width)
 590     wxHtmlWidgetCell(wxWindow *wnd, int w = 0);
 591     ~wxHtmlWidgetCell() { m_Wnd->Destroy(); }
 592     virtual void Draw(wxDC& dc, int x, int y, int view_y1, int view_y2,
 593                       wxHtmlRenderingInfo& info);
 594     virtual void DrawInvisible(wxDC& dc, int x, int y,
 595                                wxHtmlRenderingInfo& info);
 596     virtual void Layout(int w);
 597
 598 protected:
 599     wxWindow* m_Wnd;
 600     int m_WidthFloat;
 601             // width float is used in adjustWidth (it is in percents)
 602
 603     DECLARE_ABSTRACT_CLASS(wxHtmlWidgetCell)
 604     DECLARE_NO_COPY_CLASS(wxHtmlWidgetCell)
 605 };
 606
 607
 608
 609 //--------------------------------------------------------------------------------
 610 // wxHtmlLinkInfo
 611 //                  Internal data structure. It represents hypertext link
 612 //--------------------------------------------------------------------------------
 613
 614 class WXDLLIMPEXP_HTML wxHtmlLinkInfo : public wxObject
 615 {
 616 public:
 617     wxHtmlLinkInfo() : wxObject()
 618           { m_Href = m_Target = wxEmptyString; m_Event = NULL, m_Cell = NULL; }
 619     wxHtmlLinkInfo(const wxString& href, const wxString& target = wxEmptyString) : wxObject()
 620           { m_Href = href; m_Target = target; m_Event = NULL, m_Cell = NULL; }
 621     wxHtmlLinkInfo(const wxHtmlLinkInfo& l) : wxObject()
 622           { m_Href = l.m_Href, m_Target = l.m_Target, m_Event = l.m_Event;
 623             m_Cell = l.m_Cell; }
 624     wxHtmlLinkInfo& operator=(const wxHtmlLinkInfo& l)
 625           { m_Href = l.m_Href, m_Target = l.m_Target, m_Event = l.m_Event;
 626             m_Cell = l.m_Cell; return *this; }
 627
 628     void SetEvent(const wxMouseEvent *e) { m_Event = e; }
 629     void SetHtmlCell(const wxHtmlCell *e) { m_Cell = e; }
 630
 631     wxString GetHref() const { return m_Href; }
 632     wxString GetTarget() const { return m_Target; }
 633     const wxMouseEvent* GetEvent() const { return m_Event; }
 634     const wxHtmlCell* GetHtmlCell() const { return m_Cell; }
 635
 636 private:
 637     wxString m_Href, m_Target;
 638     const wxMouseEvent *m_Event;
 639     const wxHtmlCell *m_Cell;
 640 };
 641
 642
 643
 644 // ----------------------------------------------------------------------------
 645 // wxHtmlTerminalCellsInterator
 646 // ----------------------------------------------------------------------------
 647
 648 class WXDLLIMPEXP_HTML wxHtmlTerminalCellsInterator
 649 {
 650 public:
 651     wxHtmlTerminalCellsInterator(const wxHtmlCell *from, const wxHtmlCell *to)
 652         : m_to(to), m_pos(from) {}
 653
 654     operator bool() const { return m_pos != NULL; }
 655     const wxHtmlCell* operator++();
 656     const wxHtmlCell* operator->() const { return m_pos; }
 657     const wxHtmlCell* operator*() const { return m_pos; }
 658
 659 private:
 660     const wxHtmlCell *m_to, *m_pos;
 661 };
 662
 663
 664
 665 #endif // wxUSE_HTML
 666
 667 #endif // _WX_HTMLCELL_H_
 668