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 wxHtmlLinkInfo;
  24 class WXDLLIMPEXP_HTML wxHtmlCell;
  25 class WXDLLIMPEXP_HTML wxHtmlContainerCell;
  26
  27
  28 // wxHtmlSelection is data holder with information about text selection.
  29 // Selection is defined by two positions (beginning and end of the selection)
  30 // and two leaf(!) cells at these positions.
  31 class WXDLLIMPEXP_HTML wxHtmlSelection
  32 {
  33 public:
  34     wxHtmlSelection()
  35         : m_fromPos(wxDefaultPosition), m_toPos(wxDefaultPosition),
  36           m_fromPrivPos(wxDefaultPosition), m_toPrivPos(wxDefaultPosition),
  37           m_fromCell(NULL), m_toCell(NULL) {}
  38
  39     void Set(const wxPoint& fromPos, const wxHtmlCell *fromCell,
  40              const wxPoint& toPos, const wxHtmlCell *toCell);
  41     void Set(const wxHtmlCell *fromCell, const wxHtmlCell *toCell);
  42
  43     const wxHtmlCell *GetFromCell() const { return m_fromCell; }
  44     const wxHtmlCell *GetToCell() const { return m_toCell; }
  45
  46     // these values are in absolute coordinates:
  47     const wxPoint& GetFromPos() const { return m_fromPos; }
  48     const wxPoint& GetToPos() const { return m_toPos; }
  49
  50     // these are From/ToCell's private data
  51     const wxPoint& GetFromPrivPos() const { return m_fromPrivPos; }
  52     const wxPoint& GetToPrivPos() const { return m_toPrivPos; }
  53     void SetFromPrivPos(const wxPoint& pos) { m_fromPrivPos = pos; }
  54     void SetToPrivPos(const wxPoint& pos) { m_toPrivPos = pos; }
  55     void ClearPrivPos() { m_toPrivPos = m_fromPrivPos = wxDefaultPosition; }
  56
  57     bool IsEmpty() const
  58         { return m_fromPos == wxDefaultPosition &&
  59                  m_toPos == wxDefaultPosition; }
  60
  61 private:
  62     wxPoint m_fromPos, m_toPos;
  63     wxPoint m_fromPrivPos, m_toPrivPos;
  64     const wxHtmlCell *m_fromCell, *m_toCell;
  65 };
  66
  67
  68
  69 enum wxHtmlSelectionState
  70 {
  71     wxHTML_SEL_OUT,     // currently rendered cell is outside the selection
  72     wxHTML_SEL_IN,      // ... is inside selection
  73     wxHTML_SEL_CHANGING // ... is the cell on which selection state changes
  74 };
  75
  76 // Selection state is passed to wxHtmlCell::Draw so that it can render itself
  77 // differently e.g. when inside text selection or outside it.
  78 class WXDLLIMPEXP_HTML wxHtmlRenderingState
  79 {
  80 public:
  81     wxHtmlRenderingState() : m_selState(wxHTML_SEL_OUT) {}
  82
  83     void SetSelectionState(wxHtmlSelectionState s) { m_selState = s; }
  84     wxHtmlSelectionState GetSelectionState() const { return m_selState; }
  85
  86     void SetFgColour(const wxColour& c) { m_fgColour = c; }
  87     const wxColour& GetFgColour() const { return m_fgColour; }
  88     void SetBgColour(const wxColour& c) { m_bgColour = c; }
  89     const wxColour& GetBgColour() const { return m_bgColour; }
  90
  91 private:
  92     wxHtmlSelectionState  m_selState;
  93     wxColour              m_fgColour, m_bgColour;
  94 };
  95
  96
  97 // HTML rendering customization. This class is used when rendering wxHtmlCells
  98 // as a callback:
  99 class WXDLLIMPEXP_HTML wxHtmlRenderingStyle
 100 {
 101 public:
 102     virtual ~wxHtmlRenderingStyle() {}
 103     virtual wxColour GetSelectedTextColour(const wxColour& clr) = 0;
 104     virtual wxColour GetSelectedTextBgColour(const wxColour& clr) = 0;
 105 };
 106
 107 // Standard style:
 108 class WXDLLIMPEXP_HTML wxDefaultHtmlRenderingStyle : public wxHtmlRenderingStyle
 109 {
 110 public:
 111     virtual wxColour GetSelectedTextColour(const wxColour& clr);
 112     virtual wxColour GetSelectedTextBgColour(const wxColour& clr);
 113 };
 114
 115
 116 // Information given to cells when drawing them. Contains rendering state,
 117 // selection information and rendering style object that can be used to
 118 // customize the output.
 119 class WXDLLIMPEXP_HTML wxHtmlRenderingInfo
 120 {
 121 public:
 122     wxHtmlRenderingInfo() : m_selection(NULL), m_style(NULL) {}
 123
 124     void SetSelection(wxHtmlSelection *s) { m_selection = s; }
 125     wxHtmlSelection *GetSelection() const { return m_selection; }
 126
 127     void SetStyle(wxHtmlRenderingStyle *style) { m_style = style; }
 128     wxHtmlRenderingStyle& GetStyle() { return *m_style; }
 129
 130     wxHtmlRenderingState& GetState() { return m_state; }
 131
 132 protected:
 133     wxHtmlSelection      *m_selection;
 134     wxHtmlRenderingStyle *m_style;
 135     wxHtmlRenderingState m_state;
 136 };
 137
 138
 139 // Flags for wxHtmlCell::FindCellByPos
 140 enum
 141 {
 142     wxHTML_FIND_EXACT             = 1,
 143     wxHTML_FIND_NEAREST_BEFORE    = 2,
 144     wxHTML_FIND_NEAREST_AFTER     = 4
 145 };
 146
 147
 148 // Superscript/subscript/normal script mode of a cell
 149 enum wxHtmlScriptMode
 150 {
 151     wxHTML_SCRIPT_NORMAL,
 152     wxHTML_SCRIPT_SUB,
 153     wxHTML_SCRIPT_SUP
 154 };
 155
 156
 157 // ---------------------------------------------------------------------------
 158 // wxHtmlCell
 159 //                  Internal data structure. It represents fragments of parsed
 160 //                  HTML page - a word, picture, table, horizontal line and so
 161 //                  on.  It is used by wxHtmlWindow to represent HTML page in
 162 //                  memory.
 163 // ---------------------------------------------------------------------------
 164
 165
 166 class WXDLLIMPEXP_HTML wxHtmlCell : public wxObject
 167 {
 168 public:
 169     wxHtmlCell();
 170     virtual ~wxHtmlCell();
 171
 172     void SetParent(wxHtmlContainerCell *p) {m_Parent = p;}
 173     wxHtmlContainerCell *GetParent() const {return m_Parent;}
 174
 175     int GetPosX() const {return m_PosX;}
 176     int GetPosY() const {return m_PosY;}
 177     int GetWidth() const {return m_Width;}
 178
 179     // Returns the maximum possible length of the cell.
 180     // Call Layout at least once before using GetMaxTotalWidth()
 181     virtual int GetMaxTotalWidth() const { return m_Width; }
 182
 183     int GetHeight() const {return m_Height;}
 184     int GetDescent() const {return m_Descent;}
 185
 186     void SetScriptMode(wxHtmlScriptMode mode, long previousBase);
 187     wxHtmlScriptMode GetScriptMode() const { return m_ScriptMode; }
 188     long GetScriptBaseline() { return m_ScriptBaseline; }
 189
 190     // Formatting cells are not visible on the screen, they only alter
 191     // renderer's state.
 192     bool IsFormattingCell() const { return m_Width == 0 && m_Height == 0; }
 193
 194     const wxString& GetId() const { return m_id; }
 195     void SetId(const wxString& id) { m_id = id; }
 196
 197     // returns the link associated with this cell. The position is position
 198     // within the cell so it varies from 0 to m_Width, from 0 to m_Height
 199     virtual wxHtmlLinkInfo* GetLink(int WXUNUSED(x) = 0,
 200                                     int WXUNUSED(y) = 0) const
 201         { return m_Link; }
 202
 203     // Returns cursor to be used when mouse is over the cell:
 204     virtual wxCursor GetCursor() const;
 205
 206     // return next cell among parent's cells
 207     wxHtmlCell *GetNext() const {return m_Next;}
 208     // returns first child cell (if there are any, i.e. if this is container):
 209     virtual wxHtmlCell* GetFirstChild() const { return NULL; }
 210
 211     // members writing methods
 212     virtual void SetPos(int x, int y) {m_PosX = x, m_PosY = y;}
 213     void SetLink(const wxHtmlLinkInfo& link);
 214     void SetNext(wxHtmlCell *cell) {m_Next = cell;}
 215
 216     // 1. adjust cell's width according to the fact that maximal possible width
 217     //    is w.  (this has sense when working with horizontal lines, tables
 218     //    etc.)
 219     // 2. prepare layout (=fill-in m_PosX, m_PosY (and sometime m_Height)
 220     //    members) = place items to fit window, according to the width w
 221     virtual void Layout(int w);
 222
 223     // renders the cell
 224     virtual void Draw(wxDC& WXUNUSED(dc),
 225                       int WXUNUSED(x), int WXUNUSED(y),
 226                       int WXUNUSED(view_y1), int WXUNUSED(view_y2),
 227                       wxHtmlRenderingInfo& WXUNUSED(info)) {}
 228
 229     // proceed drawing actions in case the cell is not visible (scrolled out of
 230     // screen).  This is needed to change fonts, colors and so on.
 231     virtual void DrawInvisible(wxDC& WXUNUSED(dc),
 232                                int WXUNUSED(x), int WXUNUSED(y),
 233                                wxHtmlRenderingInfo& WXUNUSED(info)) {}
 234
 235     // This method returns pointer to the FIRST cell for that
 236     // the condition
 237     // is true. It first checks if the condition is true for this
 238     // cell and then calls m_Next->Find(). (Note: it checks
 239     // all subcells if the cell is container)
 240     // Condition is unique condition identifier (see htmldefs.h)
 241     // (user-defined condition IDs should start from 10000)
 242     // and param is optional parameter
 243     // Example : m_Cell->Find(wxHTML_COND_ISANCHOR, "news");
 244     //   returns pointer to anchor news
 245     virtual const wxHtmlCell* Find(int condition, const void* param) const;
 246
 247     // This function is called when mouse button is clicked over the cell.
 248     //
 249     // Parent is pointer to wxHtmlWindow that generated the event
 250     // HINT: if this handling is not enough for you you should use
 251     //       wxHtmlWidgetCell
 252     virtual void OnMouseClick(wxWindow *parent, int x, int y, const wxMouseEvent& event);
 253
 254     // This method used to adjust pagebreak position. The parameter is variable
 255     // that contains y-coordinate of page break (= horizontal line that should
 256     // not be crossed by words, images etc.). If this cell cannot be divided
 257     // into two pieces (each one on another page) then it moves the pagebreak
 258     // few pixels up.
 259     //
 260     // Returned value : true if pagebreak was modified, false otherwise
 261     // Usage : while (container->AdjustPagebreak(&p)) {}
 262     virtual bool AdjustPagebreak(int *pagebreak,
 263                                  int *known_pagebreaks = NULL,
 264                                  int number_of_pages = 0) const;
 265
 266     // Sets cell's behaviour on pagebreaks (see AdjustPagebreak). Default
 267     // is true - the cell can be split on two pages
 268     void SetCanLiveOnPagebreak(bool can) { m_CanLiveOnPagebreak = can; }
 269
 270     // Can the line be broken before this cell?
 271     virtual bool IsLinebreakAllowed() const
 272         { return !IsFormattingCell(); }
 273
 274     // Returns true for simple == terminal cells, i.e. not composite ones.
 275     // This if for internal usage only and may disappear in future versions!
 276     virtual bool IsTerminalCell() const { return true; }
 277
 278     // Find a cell inside this cell positioned at the given coordinates
 279     // (relative to this's positions). Returns NULL if no such cell exists.
 280     // The flag can be used to specify whether to look for terminal or
 281     // nonterminal cells or both. In either case, returned cell is deepest
 282     // cell in cells tree that contains [x,y].
 283     virtual wxHtmlCell *FindCellByPos(wxCoord x, wxCoord y,
 284                                   unsigned flags = wxHTML_FIND_EXACT) const;
 285
 286     // Returns absolute position of the cell on HTML canvas
 287     wxPoint GetAbsPos() const;
 288
 289     // Returns first (last) terminal cell inside this cell. It may return NULL,
 290     // but it is rare -- only if there are no terminals in the tree.
 291     virtual wxHtmlCell *GetFirstTerminal() const
 292         { return wxConstCast(this, wxHtmlCell); }
 293     virtual wxHtmlCell *GetLastTerminal() const
 294         { return wxConstCast(this, wxHtmlCell); }
 295
 296     // Returns cell's depth, i.e. how far under the root cell it is
 297     // (if it is the root, depth is 0)
 298     unsigned GetDepth() const;
 299
 300     // Returns true if the cell appears before 'cell' in natural order of
 301     // cells (= as they are read). If cell A is (grand)parent of cell B,
 302     // then both A.IsBefore(B) and B.IsBefore(A) always return true.
 303     bool IsBefore(wxHtmlCell *cell) const;
 304
 305     // Converts the cell into text representation. If sel != NULL then
 306     // only part of the cell inside the selection is converted.
 307     virtual wxString ConvertToText(wxHtmlSelection *WXUNUSED(sel)) const
 308         { return wxEmptyString; }
 309
 310 protected:
 311     // pointer to the next cell
 312     wxHtmlCell *m_Next;
 313     // pointer to parent cell
 314     wxHtmlContainerCell *m_Parent;
 315
 316     // dimensions of fragment (m_Descent is used to position text & images)
 317     long m_Width, m_Height, m_Descent;
 318     // position where the fragment is drawn:
 319     long m_PosX, m_PosY;
 320
 321     // superscript/subscript/normal:
 322     wxHtmlScriptMode m_ScriptMode;
 323     long m_ScriptBaseline;
 324
 325     // destination address if this fragment is hypertext link, NULL otherwise
 326     wxHtmlLinkInfo *m_Link;
 327     // true if this cell can be placed on pagebreak, false otherwise
 328     bool m_CanLiveOnPagebreak;
 329     // unique identifier of the cell, generated from "id" property of tags
 330     wxString m_id;
 331
 332     DECLARE_ABSTRACT_CLASS(wxHtmlCell)
 333     DECLARE_NO_COPY_CLASS(wxHtmlCell)
 334 };
 335
 336
 337
 338
 339 // ----------------------------------------------------------------------------
 340 // Inherited cells:
 341 // ----------------------------------------------------------------------------
 342
 343
 344 // ----------------------------------------------------------------------------
 345 // wxHtmlWordCell
 346 //                  Single word in input stream.
 347 // ----------------------------------------------------------------------------
 348
 349 class WXDLLIMPEXP_HTML wxHtmlWordCell : public wxHtmlCell
 350 {
 351 public:
 352     wxHtmlWordCell(const wxString& word, const wxDC& dc);
 353     void Draw(wxDC& dc, int x, int y, int view_y1, int view_y2,
 354               wxHtmlRenderingInfo& info);
 355     wxCursor GetCursor() const;
 356     wxString ConvertToText(wxHtmlSelection *sel) const;
 357     bool IsLinebreakAllowed() const { return m_allowLinebreak; }
 358
 359     void SetPreviousWord(wxHtmlWordCell *cell);
 360
 361 protected:
 362     void SetSelectionPrivPos(const wxDC& dc, wxHtmlSelection *s) const;
 363     void Split(const wxDC& dc,
 364                const wxPoint& selFrom, const wxPoint& selTo,
 365                unsigned& pos1, unsigned& pos2) const;
 366
 367     wxString m_Word;
 368     bool     m_allowLinebreak;
 369
 370     DECLARE_ABSTRACT_CLASS(wxHtmlWordCell)
 371     DECLARE_NO_COPY_CLASS(wxHtmlWordCell)
 372 };
 373
 374
 375
 376
 377
 378 // Container contains other cells, thus forming tree structure of rendering
 379 // elements. Basic code of layout algorithm is contained in this class.
 380 class WXDLLIMPEXP_HTML wxHtmlContainerCell : public wxHtmlCell
 381 {
 382 public:
 383     wxHtmlContainerCell(wxHtmlContainerCell *parent);
 384     ~wxHtmlContainerCell();
 385
 386     virtual void Layout(int w);
 387     virtual void Draw(wxDC& dc, int x, int y, int view_y1, int view_y2,
 388                       wxHtmlRenderingInfo& info);
 389     virtual void DrawInvisible(wxDC& dc, int x, int y,
 390                                wxHtmlRenderingInfo& info);
 391     virtual bool AdjustPagebreak(int *pagebreak, int *known_pagebreaks = NULL, int number_of_pages = 0) const;
 392
 393     // insert cell at the end of m_Cells list
 394     void InsertCell(wxHtmlCell *cell);
 395
 396     // sets horizontal/vertical alignment
 397     void SetAlignHor(int al) {m_AlignHor = al; m_LastLayout = -1;}
 398     int GetAlignHor() const {return m_AlignHor;}
 399     void SetAlignVer(int al) {m_AlignVer = al; m_LastLayout = -1;}
 400     int GetAlignVer() const {return m_AlignVer;}
 401
 402     // sets left-border indentation. units is one of wxHTML_UNITS_* constants
 403     // what is combination of wxHTML_INDENT_*
 404     void SetIndent(int i, int what, int units = wxHTML_UNITS_PIXELS);
 405     // returns the indentation. ind is one of wxHTML_INDENT_* constants
 406     int GetIndent(int ind) const;
 407     // returns type of value returned by GetIndent(ind)
 408     int GetIndentUnits(int ind) const;
 409
 410     // sets alignment info based on given tag's params
 411     void SetAlign(const wxHtmlTag& tag);
 412     // sets floating width adjustment
 413     // (examples : 32 percent of parent container,
 414     // -15 pixels percent (this means 100 % - 15 pixels)
 415     void SetWidthFloat(int w, int units) {m_WidthFloat = w; m_WidthFloatUnits = units; m_LastLayout = -1;}
 416     void SetWidthFloat(const wxHtmlTag& tag, double pixel_scale = 1.0);
 417     // sets minimal height of this container.
 418     void SetMinHeight(int h, int align = wxHTML_ALIGN_TOP) {m_MinHeight = h; m_MinHeightAlign = align; m_LastLayout = -1;}
 419
 420     void SetBackgroundColour(const wxColour& clr) {m_UseBkColour = true; m_BkColour = clr;}
 421     // returns background colour (of wxNullColour if none set), so that widgets can
 422     // adapt to it:
 423     wxColour GetBackgroundColour();
 424     void SetBorder(const wxColour& clr1, const wxColour& clr2) {m_UseBorder = true; m_BorderColour1 = clr1, m_BorderColour2 = clr2;}
 425     virtual wxHtmlLinkInfo* GetLink(int x = 0, int y = 0) const;
 426     virtual const wxHtmlCell* Find(int condition, const void* param) const;
 427     virtual void OnMouseClick(wxWindow *parent, int x, int y, const wxMouseEvent& event);
 428
 429     virtual wxHtmlCell* GetFirstChild() const { return m_Cells; }
 430 #if WXWIN_COMPATIBILITY_2_4
 431     wxDEPRECATED( wxHtmlCell* GetFirstCell() const );
 432 #endif
 433     // returns last child cell:
 434     wxHtmlCell* GetLastChild() const { return m_LastCell; }
 435
 436     // see comment in wxHtmlCell about this method
 437     virtual bool IsTerminalCell() const { return false; }
 438
 439     virtual wxHtmlCell *FindCellByPos(wxCoord x, wxCoord y,
 440                                   unsigned flags = wxHTML_FIND_EXACT) const;
 441
 442     virtual wxHtmlCell *GetFirstTerminal() const;
 443     virtual wxHtmlCell *GetLastTerminal() const;
 444
 445
 446     // Removes indentation on top or bottom of the container (i.e. above or
 447     // below first/last terminal cell). For internal use only.
 448     virtual void RemoveExtraSpacing(bool top, bool bottom);
 449
 450     // Returns the maximum possible length of the container.
 451     // Call Layout at least once before using GetMaxTotalWidth()
 452     virtual int GetMaxTotalWidth() const { return m_MaxTotalWidth; }
 453
 454 protected:
 455     void UpdateRenderingStatePre(wxHtmlRenderingInfo& info,
 456                                  wxHtmlCell *cell) const;
 457     void UpdateRenderingStatePost(wxHtmlRenderingInfo& info,
 458                                   wxHtmlCell *cell) const;
 459
 460 protected:
 461     int m_IndentLeft, m_IndentRight, m_IndentTop, m_IndentBottom;
 462             // indentation of subcells. There is always m_Indent pixels
 463             // big space between given border of the container and the subcells
 464             // it m_Indent < 0 it is in PERCENTS, otherwise it is in pixels
 465     int m_MinHeight, m_MinHeightAlign;
 466         // minimal height.
 467     wxHtmlCell *m_Cells, *m_LastCell;
 468             // internal cells, m_Cells points to the first of them, m_LastCell to the last one.
 469             // (LastCell is needed only to speed-up InsertCell)
 470     int m_AlignHor, m_AlignVer;
 471             // alignment horizontal and vertical (left, center, right)
 472     int m_WidthFloat, m_WidthFloatUnits;
 473             // width float is used in adjustWidth
 474     bool m_UseBkColour;
 475     wxColour m_BkColour;
 476             // background color of this container
 477     bool m_UseBorder;
 478     wxColour m_BorderColour1, m_BorderColour2;
 479             // borders color of this container
 480     int m_LastLayout;
 481             // if != -1 then call to Layout may be no-op
 482             // if previous call to Layout has same argument
 483     int m_MaxTotalWidth;
 484             // Maximum possible length if ignoring line wrap
 485
 486
 487     DECLARE_ABSTRACT_CLASS(wxHtmlContainerCell)
 488     DECLARE_NO_COPY_CLASS(wxHtmlContainerCell)
 489 };
 490
 491 #if WXWIN_COMPATIBILITY_2_4
 492 inline wxHtmlCell* wxHtmlContainerCell::GetFirstCell() const
 493     { return GetFirstChild(); }
 494 #endif
 495
 496
 497
 498
 499 // ---------------------------------------------------------------------------
 500 // wxHtmlColourCell
 501 //                  Color changer.
 502 // ---------------------------------------------------------------------------
 503
 504 class WXDLLIMPEXP_HTML wxHtmlColourCell : public wxHtmlCell
 505 {
 506 public:
 507     wxHtmlColourCell(const wxColour& clr, int flags = wxHTML_CLR_FOREGROUND) : wxHtmlCell() {m_Colour = clr; m_Flags = flags;}
 508     virtual void Draw(wxDC& dc, int x, int y, int view_y1, int view_y2,
 509                       wxHtmlRenderingInfo& info);
 510     virtual void DrawInvisible(wxDC& dc, int x, int y,
 511                                wxHtmlRenderingInfo& info);
 512
 513 protected:
 514     wxColour m_Colour;
 515     unsigned m_Flags;
 516
 517     DECLARE_ABSTRACT_CLASS(wxHtmlColourCell)
 518     DECLARE_NO_COPY_CLASS(wxHtmlColourCell)
 519 };
 520
 521
 522
 523
 524 //--------------------------------------------------------------------------------
 525 // wxHtmlFontCell
 526 //                  Sets actual font used for text rendering
 527 //--------------------------------------------------------------------------------
 528
 529 class WXDLLIMPEXP_HTML wxHtmlFontCell : public wxHtmlCell
 530 {
 531 public:
 532     wxHtmlFontCell(wxFont *font) : wxHtmlCell() { m_Font = (*font); }
 533     virtual void Draw(wxDC& dc, int x, int y, int view_y1, int view_y2,
 534                       wxHtmlRenderingInfo& info);
 535     virtual void DrawInvisible(wxDC& dc, int x, int y,
 536                                wxHtmlRenderingInfo& info);
 537
 538 protected:
 539     wxFont m_Font;
 540
 541     DECLARE_ABSTRACT_CLASS(wxHtmlFontCell)
 542     DECLARE_NO_COPY_CLASS(wxHtmlFontCell)
 543 };
 544
 545
 546
 547
 548
 549
 550 //--------------------------------------------------------------------------------
 551 // wxHtmlwidgetCell
 552 //                  This cell is connected with wxWindow object
 553 //                  You can use it to insert windows into HTML page
 554 //                  (buttons, input boxes etc.)
 555 //--------------------------------------------------------------------------------
 556
 557 class WXDLLIMPEXP_HTML wxHtmlWidgetCell : public wxHtmlCell
 558 {
 559 public:
 560     // !!! wnd must have correct parent!
 561     // if w != 0 then the m_Wnd has 'floating' width - it adjust
 562     // it's width according to parent container's width
 563     // (w is percent of parent's width)
 564     wxHtmlWidgetCell(wxWindow *wnd, int w = 0);
 565     ~wxHtmlWidgetCell() { m_Wnd->Destroy(); }
 566     virtual void Draw(wxDC& dc, int x, int y, int view_y1, int view_y2,
 567                       wxHtmlRenderingInfo& info);
 568     virtual void DrawInvisible(wxDC& dc, int x, int y,
 569                                wxHtmlRenderingInfo& info);
 570     virtual void Layout(int w);
 571
 572 protected:
 573     wxWindow* m_Wnd;
 574     int m_WidthFloat;
 575             // width float is used in adjustWidth (it is in percents)
 576
 577     DECLARE_ABSTRACT_CLASS(wxHtmlWidgetCell)
 578     DECLARE_NO_COPY_CLASS(wxHtmlWidgetCell)
 579 };
 580
 581
 582
 583 //--------------------------------------------------------------------------------
 584 // wxHtmlLinkInfo
 585 //                  Internal data structure. It represents hypertext link
 586 //--------------------------------------------------------------------------------
 587
 588 class WXDLLIMPEXP_HTML wxHtmlLinkInfo : public wxObject
 589 {
 590 public:
 591     wxHtmlLinkInfo() : wxObject()
 592           { m_Href = m_Target = wxEmptyString; m_Event = NULL, m_Cell = NULL; }
 593     wxHtmlLinkInfo(const wxString& href, const wxString& target = wxEmptyString) : wxObject()
 594           { m_Href = href; m_Target = target; m_Event = NULL, m_Cell = NULL; }
 595     wxHtmlLinkInfo(const wxHtmlLinkInfo& l) : wxObject()
 596           { m_Href = l.m_Href, m_Target = l.m_Target, m_Event = l.m_Event;
 597             m_Cell = l.m_Cell; }
 598     wxHtmlLinkInfo& operator=(const wxHtmlLinkInfo& l)
 599           { m_Href = l.m_Href, m_Target = l.m_Target, m_Event = l.m_Event;
 600             m_Cell = l.m_Cell; return *this; }
 601
 602     void SetEvent(const wxMouseEvent *e) { m_Event = e; }
 603     void SetHtmlCell(const wxHtmlCell *e) { m_Cell = e; }
 604
 605     wxString GetHref() const { return m_Href; }
 606     wxString GetTarget() const { return m_Target; }
 607     const wxMouseEvent* GetEvent() const { return m_Event; }
 608     const wxHtmlCell* GetHtmlCell() const { return m_Cell; }
 609
 610 private:
 611     wxString m_Href, m_Target;
 612     const wxMouseEvent *m_Event;
 613     const wxHtmlCell *m_Cell;
 614 };
 615
 616
 617
 618 // ----------------------------------------------------------------------------
 619 // wxHtmlTerminalCellsInterator
 620 // ----------------------------------------------------------------------------
 621
 622 class WXDLLIMPEXP_HTML wxHtmlTerminalCellsInterator
 623 {
 624 public:
 625     wxHtmlTerminalCellsInterator(const wxHtmlCell *from, const wxHtmlCell *to)
 626         : m_to(to), m_pos(from) {}
 627
 628     operator bool() const { return m_pos != NULL; }
 629     const wxHtmlCell* operator++();
 630     const wxHtmlCell* operator->() const { return m_pos; }
 631     const wxHtmlCell* operator*() const { return m_pos; }
 632
 633 private:
 634     const wxHtmlCell *m_to, *m_pos;
 635 };
 636
 637
 638
 639 #endif // wxUSE_HTML
 640
 641 #endif // _WX_HTMLCELL_H_
 642