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 // Copyright:   (c) 1999-2003 Vaclav Slavik
   7 // Licence:     wxWindows licence
   8 /////////////////////////////////////////////////////////////////////////////
   9
  10 #ifndef _WX_HTMLCELL_H_
  11 #define _WX_HTMLCELL_H_
  12
  13 #include "wx/defs.h"
  14
  15 #if wxUSE_HTML
  16
  17 #include "wx/html/htmltag.h"
  18 #include "wx/html/htmldefs.h"
  19 #include "wx/window.h"
  20
  21
  22 class WXDLLIMPEXP_FWD_HTML wxHtmlWindowInterface;
  23 class WXDLLIMPEXP_FWD_HTML wxHtmlLinkInfo;
  24 class WXDLLIMPEXP_FWD_HTML wxHtmlCell;
  25 class WXDLLIMPEXP_FWD_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_fromCharacterPos(-1), m_toCharacterPos(-1),
  37           m_fromCell(NULL), m_toCell(NULL) {}
  38
  39     // this version is used for the user selection defined with the mouse
  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     void ClearFromToCharacterPos() { m_toCharacterPos = m_fromCharacterPos = -1; }
  53     bool AreFromToCharacterPosSet() const { return m_toCharacterPos != -1 && m_fromCharacterPos != -1; }
  54
  55     void SetFromCharacterPos (wxCoord pos) { m_fromCharacterPos = pos; }
  56     void SetToCharacterPos (wxCoord pos) { m_toCharacterPos = pos; }
  57     wxCoord GetFromCharacterPos () const { return m_fromCharacterPos; }
  58     wxCoord GetToCharacterPos () const { return m_toCharacterPos; }
  59
  60     bool IsEmpty() const
  61         { return m_fromPos == wxDefaultPosition &&
  62                  m_toPos == wxDefaultPosition; }
  63
  64 private:
  65     wxPoint m_fromPos, m_toPos;
  66     wxCoord m_fromCharacterPos, m_toCharacterPos;
  67     const wxHtmlCell *m_fromCell, *m_toCell;
  68 };
  69
  70
  71
  72 enum wxHtmlSelectionState
  73 {
  74     wxHTML_SEL_OUT,     // currently rendered cell is outside the selection
  75     wxHTML_SEL_IN,      // ... is inside selection
  76     wxHTML_SEL_CHANGING // ... is the cell on which selection state changes
  77 };
  78
  79 // Selection state is passed to wxHtmlCell::Draw so that it can render itself
  80 // differently e.g. when inside text selection or outside it.
  81 class WXDLLIMPEXP_HTML wxHtmlRenderingState
  82 {
  83 public:
  84     wxHtmlRenderingState() : m_selState(wxHTML_SEL_OUT) {}
  85
  86     void SetSelectionState(wxHtmlSelectionState s) { m_selState = s; }
  87     wxHtmlSelectionState GetSelectionState() const { return m_selState; }
  88
  89     void SetFgColour(const wxColour& c) { m_fgColour = c; }
  90     const wxColour& GetFgColour() const { return m_fgColour; }
  91     void SetBgColour(const wxColour& c) { m_bgColour = c; }
  92     const wxColour& GetBgColour() const { return m_bgColour; }
  93     void SetBgMode(int m) { m_bgMode = m; }
  94     int GetBgMode() const { return m_bgMode; }
  95
  96 private:
  97     wxHtmlSelectionState  m_selState;
  98     wxColour              m_fgColour, m_bgColour;
  99     int                   m_bgMode;
 100 };
 101
 102
 103 // HTML rendering customization. This class is used when rendering wxHtmlCells
 104 // as a callback:
 105 class WXDLLIMPEXP_HTML wxHtmlRenderingStyle
 106 {
 107 public:
 108     virtual ~wxHtmlRenderingStyle() {}
 109     virtual wxColour GetSelectedTextColour(const wxColour& clr) = 0;
 110     virtual wxColour GetSelectedTextBgColour(const wxColour& clr) = 0;
 111 };
 112
 113 // Standard style:
 114 class WXDLLIMPEXP_HTML wxDefaultHtmlRenderingStyle : public wxHtmlRenderingStyle
 115 {
 116 public:
 117     virtual wxColour GetSelectedTextColour(const wxColour& clr);
 118     virtual wxColour GetSelectedTextBgColour(const wxColour& clr);
 119 };
 120
 121
 122 // Information given to cells when drawing them. Contains rendering state,
 123 // selection information and rendering style object that can be used to
 124 // customize the output.
 125 class WXDLLIMPEXP_HTML wxHtmlRenderingInfo
 126 {
 127 public:
 128     wxHtmlRenderingInfo() : m_selection(NULL), m_style(NULL) {}
 129
 130     void SetSelection(wxHtmlSelection *s) { m_selection = s; }
 131     wxHtmlSelection *GetSelection() const { return m_selection; }
 132
 133     void SetStyle(wxHtmlRenderingStyle *style) { m_style = style; }
 134     wxHtmlRenderingStyle& GetStyle() { return *m_style; }
 135
 136     wxHtmlRenderingState& GetState() { return m_state; }
 137
 138 protected:
 139     wxHtmlSelection      *m_selection;
 140     wxHtmlRenderingStyle *m_style;
 141     wxHtmlRenderingState m_state;
 142 };
 143
 144
 145 // Flags for wxHtmlCell::FindCellByPos
 146 enum
 147 {
 148     wxHTML_FIND_EXACT             = 1,
 149     wxHTML_FIND_NEAREST_BEFORE    = 2,
 150     wxHTML_FIND_NEAREST_AFTER     = 4
 151 };
 152
 153
 154 // Superscript/subscript/normal script mode of a cell
 155 enum wxHtmlScriptMode
 156 {
 157     wxHTML_SCRIPT_NORMAL,
 158     wxHTML_SCRIPT_SUB,
 159     wxHTML_SCRIPT_SUP
 160 };
 161
 162
 163 // ---------------------------------------------------------------------------
 164 // wxHtmlCell
 165 //                  Internal data structure. It represents fragments of parsed
 166 //                  HTML page - a word, picture, table, horizontal line and so
 167 //                  on.  It is used by wxHtmlWindow to represent HTML page in
 168 //                  memory.
 169 // ---------------------------------------------------------------------------
 170
 171
 172 class WXDLLIMPEXP_HTML wxHtmlCell : public wxObject
 173 {
 174 public:
 175     wxHtmlCell();
 176     virtual ~wxHtmlCell();
 177
 178     void SetParent(wxHtmlContainerCell *p) {m_Parent = p;}
 179     wxHtmlContainerCell *GetParent() const {return m_Parent;}
 180
 181     int GetPosX() const {return m_PosX;}
 182     int GetPosY() const {return m_PosY;}
 183     int GetWidth() const {return m_Width;}
 184
 185     // Returns the maximum possible length of the cell.
 186     // Call Layout at least once before using GetMaxTotalWidth()
 187     virtual int GetMaxTotalWidth() const { return m_Width; }
 188
 189     int GetHeight() const {return m_Height;}
 190     int GetDescent() const {return m_Descent;}
 191
 192     void SetScriptMode(wxHtmlScriptMode mode, long previousBase);
 193     wxHtmlScriptMode GetScriptMode() const { return m_ScriptMode; }
 194     long GetScriptBaseline() { return m_ScriptBaseline; }
 195
 196     // Formatting cells are not visible on the screen, they only alter
 197     // renderer's state.
 198     bool IsFormattingCell() const { return m_Width == 0 && m_Height == 0; }
 199
 200     const wxString& GetId() const { return m_id; }
 201     void SetId(const wxString& id) { m_id = id; }
 202
 203     // returns the link associated with this cell. The position is position
 204     // within the cell so it varies from 0 to m_Width, from 0 to m_Height
 205     virtual wxHtmlLinkInfo* GetLink(int WXUNUSED(x) = 0,
 206                                     int WXUNUSED(y) = 0) const
 207         { return m_Link; }
 208
 209     // Returns cursor to be used when mouse is over the cell, can be
 210     // overridden by the derived classes to use a different cursor whenever the
 211     // mouse is over this cell.
 212     virtual wxCursor GetMouseCursor(wxHtmlWindowInterface *window) const;
 213
 214     // Returns cursor to be used when mouse is over the given point, can be
 215     // overridden if the cursor should change depending on where exactly inside
 216     // the cell the mouse is.
 217     virtual wxCursor GetMouseCursorAt(wxHtmlWindowInterface *window,
 218                                       const wxPoint& relPos) const;
 219
 220 #if WXWIN_COMPATIBILITY_2_6
 221     // this was replaced by GetMouseCursor, don't use in new code!
 222     virtual wxCursor GetCursor() const;
 223 #endif
 224
 225     // return next cell among parent's cells
 226     wxHtmlCell *GetNext() const {return m_Next;}
 227     // returns first child cell (if there are any, i.e. if this is container):
 228     virtual wxHtmlCell* GetFirstChild() const { return NULL; }
 229
 230     // members writing methods
 231     virtual void SetPos(int x, int y) {m_PosX = x, m_PosY = y;}
 232     void SetLink(const wxHtmlLinkInfo& link);
 233     void SetNext(wxHtmlCell *cell) {m_Next = cell;}
 234
 235     // 1. adjust cell's width according to the fact that maximal possible width
 236     //    is w.  (this has sense when working with horizontal lines, tables
 237     //    etc.)
 238     // 2. prepare layout (=fill-in m_PosX, m_PosY (and sometime m_Height)
 239     //    members) = place items to fit window, according to the width w
 240     virtual void Layout(int w);
 241
 242     // renders the cell
 243     virtual void Draw(wxDC& WXUNUSED(dc),
 244                       int WXUNUSED(x), int WXUNUSED(y),
 245                       int WXUNUSED(view_y1), int WXUNUSED(view_y2),
 246                       wxHtmlRenderingInfo& WXUNUSED(info)) {}
 247
 248     // proceed drawing actions in case the cell is not visible (scrolled out of
 249     // screen).  This is needed to change fonts, colors and so on.
 250     virtual void DrawInvisible(wxDC& WXUNUSED(dc),
 251                                int WXUNUSED(x), int WXUNUSED(y),
 252                                wxHtmlRenderingInfo& WXUNUSED(info)) {}
 253
 254     // This method returns pointer to the FIRST cell for that
 255     // the condition
 256     // is true. It first checks if the condition is true for this
 257     // cell and then calls m_Next->Find(). (Note: it checks
 258     // all subcells if the cell is container)
 259     // Condition is unique condition identifier (see htmldefs.h)
 260     // (user-defined condition IDs should start from 10000)
 261     // and param is optional parameter
 262     // Example : m_Cell->Find(wxHTML_COND_ISANCHOR, "news");
 263     //   returns pointer to anchor news
 264     virtual const wxHtmlCell* Find(int condition, const void* param) const;
 265
 266
 267     // This function is called when mouse button is clicked over the cell.
 268     // Returns true if a link is clicked, false otherwise.
 269     //
 270     // 'window' is pointer to wxHtmlWindowInterface of the window which
 271     // generated the event.
 272     // HINT: if this handling is not enough for you you should use
 273     //       wxHtmlWidgetCell
 274     virtual bool ProcessMouseClick(wxHtmlWindowInterface *window,
 275                                    const wxPoint& pos,
 276                                    const wxMouseEvent& event);
 277
 278 #if WXWIN_COMPATIBILITY_2_6
 279     // this was replaced by ProcessMouseClick, don't use in new code!
 280     virtual void OnMouseClick(wxWindow *window,
 281                               int x, int y, const wxMouseEvent& event);
 282 #endif
 283
 284     // This method used to adjust pagebreak position. The parameter is variable
 285     // that contains y-coordinate of page break (= horizontal line that should
 286     // not be crossed by words, images etc.). If this cell cannot be divided
 287     // into two pieces (each one on another page) then it moves the pagebreak
 288     // few pixels up.
 289     //
 290     // Returned value : true if pagebreak was modified, false otherwise
 291     // Usage : while (container->AdjustPagebreak(&p)) {}
 292     virtual bool AdjustPagebreak(int *pagebreak,
 293                                  const wxArrayInt& known_pagebreaks,
 294                                  int pageHeight) const;
 295
 296     // Sets cell's behaviour on pagebreaks (see AdjustPagebreak). Default
 297     // is true - the cell can be split on two pages
 298     // If there is no way to fit a cell in the current page size, the cell
 299     // is always split, ignoring this setting.
 300     void SetCanLiveOnPagebreak(bool can) { m_CanLiveOnPagebreak = can; }
 301
 302     // Can the line be broken before this cell?
 303     virtual bool IsLinebreakAllowed() const
 304         { return !IsFormattingCell(); }
 305
 306     // Returns true for simple == terminal cells, i.e. not composite ones.
 307     // This if for internal usage only and may disappear in future versions!
 308     virtual bool IsTerminalCell() const { return true; }
 309
 310     // Find a cell inside this cell positioned at the given coordinates
 311     // (relative to this's positions). Returns NULL if no such cell exists.
 312     // The flag can be used to specify whether to look for terminal or
 313     // nonterminal cells or both. In either case, returned cell is deepest
 314     // cell in cells tree that contains [x,y].
 315     virtual wxHtmlCell *FindCellByPos(wxCoord x, wxCoord y,
 316                                   unsigned flags = wxHTML_FIND_EXACT) const;
 317
 318     // Returns absolute position of the cell on HTML canvas.
 319     // If rootCell is provided, then it's considered to be the root of the
 320     // hierarchy and the returned value is relative to it.
 321     wxPoint GetAbsPos(wxHtmlCell *rootCell = NULL) const;
 322
 323     // Returns root cell of the hierarchy (i.e. grand-grand-...-parent that
 324     // doesn't have a parent itself)
 325     wxHtmlCell *GetRootCell() const;
 326
 327     // Returns first (last) terminal cell inside this cell. It may return NULL,
 328     // but it is rare -- only if there are no terminals in the tree.
 329     virtual wxHtmlCell *GetFirstTerminal() const
 330         { return wxConstCast(this, wxHtmlCell); }
 331     virtual wxHtmlCell *GetLastTerminal() const
 332         { return wxConstCast(this, wxHtmlCell); }
 333
 334     // Returns cell's depth, i.e. how far under the root cell it is
 335     // (if it is the root, depth is 0)
 336     unsigned GetDepth() const;
 337
 338     // Returns true if the cell appears before 'cell' in natural order of
 339     // cells (= as they are read). If cell A is (grand)parent of cell B,
 340     // then both A.IsBefore(B) and B.IsBefore(A) always return true.
 341     bool IsBefore(wxHtmlCell *cell) const;
 342
 343     // Converts the cell into text representation. If sel != NULL then
 344     // only part of the cell inside the selection is converted.
 345     virtual wxString ConvertToText(wxHtmlSelection *WXUNUSED(sel)) const
 346         { return wxEmptyString; }
 347
 348 protected:
 349     // pointer to the next cell
 350     wxHtmlCell *m_Next;
 351     // pointer to parent cell
 352     wxHtmlContainerCell *m_Parent;
 353
 354     // dimensions of fragment (m_Descent is used to position text & images)
 355     int m_Width, m_Height, m_Descent;
 356     // position where the fragment is drawn:
 357     int m_PosX, m_PosY;
 358
 359     // superscript/subscript/normal:
 360     wxHtmlScriptMode m_ScriptMode;
 361     long m_ScriptBaseline;
 362
 363     // destination address if this fragment is hypertext link, NULL otherwise
 364     wxHtmlLinkInfo *m_Link;
 365     // true if this cell can be placed on pagebreak, false otherwise
 366     bool m_CanLiveOnPagebreak;
 367     // unique identifier of the cell, generated from "id" property of tags
 368     wxString m_id;
 369
 370     DECLARE_ABSTRACT_CLASS(wxHtmlCell)
 371     wxDECLARE_NO_COPY_CLASS(wxHtmlCell);
 372 };
 373
 374
 375
 376
 377 // ----------------------------------------------------------------------------
 378 // Inherited cells:
 379 // ----------------------------------------------------------------------------
 380
 381
 382 // ----------------------------------------------------------------------------
 383 // wxHtmlWordCell
 384 //                  Single word in input stream.
 385 // ----------------------------------------------------------------------------
 386
 387 class WXDLLIMPEXP_HTML wxHtmlWordCell : public wxHtmlCell
 388 {
 389 public:
 390     wxHtmlWordCell(const wxString& word, const wxDC& dc);
 391     void Draw(wxDC& dc, int x, int y, int view_y1, int view_y2,
 392               wxHtmlRenderingInfo& info);
 393     virtual wxCursor GetMouseCursor(wxHtmlWindowInterface *window) const;
 394     virtual wxString ConvertToText(wxHtmlSelection *sel) const;
 395     bool IsLinebreakAllowed() const { return m_allowLinebreak; }
 396
 397     void SetPreviousWord(wxHtmlWordCell *cell);
 398
 399 protected:
 400     virtual wxString GetAllAsText() const
 401         { return m_Word; }
 402     virtual wxString GetPartAsText(int begin, int end) const
 403         { return m_Word.Mid(begin, end - begin); }
 404
 405     void SetSelectionPrivPos(const wxDC& dc, wxHtmlSelection *s) const;
 406     void Split(const wxDC& dc,
 407                const wxPoint& selFrom, const wxPoint& selTo,
 408                unsigned& pos1, unsigned& pos2) const;
 409
 410     wxString m_Word;
 411     bool     m_allowLinebreak;
 412
 413     DECLARE_ABSTRACT_CLASS(wxHtmlWordCell)
 414     wxDECLARE_NO_COPY_CLASS(wxHtmlWordCell);
 415 };
 416
 417
 418 // wxHtmlWordCell specialization for storing text fragments with embedded
 419 // '\t's; these differ from normal words in that the displayed text is
 420 // different from the text copied to clipboard
 421 class WXDLLIMPEXP_HTML wxHtmlWordWithTabsCell : public wxHtmlWordCell
 422 {
 423 public:
 424     wxHtmlWordWithTabsCell(const wxString& word,
 425                            const wxString& wordOrig,
 426                            size_t linepos,
 427                            const wxDC& dc)
 428         : wxHtmlWordCell(word, dc),
 429           m_wordOrig(wordOrig),
 430           m_linepos(linepos)
 431     {}
 432
 433 protected:
 434     virtual wxString GetAllAsText() const;
 435     virtual wxString GetPartAsText(int begin, int end) const;
 436
 437     wxString m_wordOrig;
 438     size_t   m_linepos;
 439 };
 440
 441
 442 // Container contains other cells, thus forming tree structure of rendering
 443 // elements. Basic code of layout algorithm is contained in this class.
 444 class WXDLLIMPEXP_HTML wxHtmlContainerCell : public wxHtmlCell
 445 {
 446 public:
 447     wxHtmlContainerCell(wxHtmlContainerCell *parent);
 448     virtual ~wxHtmlContainerCell();
 449
 450     virtual void Layout(int w);
 451     virtual void Draw(wxDC& dc, int x, int y, int view_y1, int view_y2,
 452                       wxHtmlRenderingInfo& info);
 453     virtual void DrawInvisible(wxDC& dc, int x, int y,
 454                                wxHtmlRenderingInfo& info);
 455
 456     virtual bool AdjustPagebreak(int *pagebreak,
 457                                  const wxArrayInt& known_pagebreaks,
 458                                  int pageHeight) const;
 459
 460     // insert cell at the end of m_Cells list
 461     void InsertCell(wxHtmlCell *cell);
 462
 463     // sets horizontal/vertical alignment
 464     void SetAlignHor(int al) {m_AlignHor = al; m_LastLayout = -1;}
 465     int GetAlignHor() const {return m_AlignHor;}
 466     void SetAlignVer(int al) {m_AlignVer = al; m_LastLayout = -1;}
 467     int GetAlignVer() const {return m_AlignVer;}
 468
 469     // sets left-border indentation. units is one of wxHTML_UNITS_* constants
 470     // what is combination of wxHTML_INDENT_*
 471     void SetIndent(int i, int what, int units = wxHTML_UNITS_PIXELS);
 472     // returns the indentation. ind is one of wxHTML_INDENT_* constants
 473     int GetIndent(int ind) const;
 474     // returns type of value returned by GetIndent(ind)
 475     int GetIndentUnits(int ind) const;
 476
 477     // sets alignment info based on given tag's params
 478     void SetAlign(const wxHtmlTag& tag);
 479     // sets floating width adjustment
 480     // (examples : 32 percent of parent container,
 481     // -15 pixels percent (this means 100 % - 15 pixels)
 482     void SetWidthFloat(int w, int units) {m_WidthFloat = w; m_WidthFloatUnits = units; m_LastLayout = -1;}
 483     void SetWidthFloat(const wxHtmlTag& tag, double pixel_scale = 1.0);
 484     // sets minimal height of this container.
 485     void SetMinHeight(int h, int align = wxHTML_ALIGN_TOP) {m_MinHeight = h; m_MinHeightAlign = align; m_LastLayout = -1;}
 486
 487     void SetBackgroundColour(const wxColour& clr) {m_BkColour = clr;}
 488     // returns background colour (of wxNullColour if none set), so that widgets can
 489     // adapt to it:
 490     wxColour GetBackgroundColour();
 491     void SetBorder(const wxColour& clr1, const wxColour& clr2, int border = 1) {m_Border = border; m_BorderColour1 = clr1, m_BorderColour2 = clr2;}
 492     virtual wxHtmlLinkInfo* GetLink(int x = 0, int y = 0) const;
 493     virtual const wxHtmlCell* Find(int condition, const void* param) const;
 494
 495 #if WXWIN_COMPATIBILITY_2_6
 496     // this was replaced by ProcessMouseClick, don't use in new code!
 497     virtual void OnMouseClick(wxWindow *window,
 498                               int x, int y, const wxMouseEvent& event);
 499 #endif
 500     virtual bool ProcessMouseClick(wxHtmlWindowInterface *window,
 501                                    const wxPoint& pos,
 502                                    const wxMouseEvent& event);
 503
 504     virtual wxHtmlCell* GetFirstChild() const { return m_Cells; }
 505
 506     // returns last child cell:
 507     wxHtmlCell* GetLastChild() const { return m_LastCell; }
 508
 509     // see comment in wxHtmlCell about this method
 510     virtual bool IsTerminalCell() const { return false; }
 511
 512     virtual wxHtmlCell *FindCellByPos(wxCoord x, wxCoord y,
 513                                   unsigned flags = wxHTML_FIND_EXACT) const;
 514
 515     virtual wxHtmlCell *GetFirstTerminal() const;
 516     virtual wxHtmlCell *GetLastTerminal() const;
 517
 518
 519     // Removes indentation on top or bottom of the container (i.e. above or
 520     // below first/last terminal cell). For internal use only.
 521     virtual void RemoveExtraSpacing(bool top, bool bottom);
 522
 523     // Returns the maximum possible length of the container.
 524     // Call Layout at least once before using GetMaxTotalWidth()
 525     virtual int GetMaxTotalWidth() const { return m_MaxTotalWidth; }
 526
 527 protected:
 528     void UpdateRenderingStatePre(wxHtmlRenderingInfo& info,
 529                                  wxHtmlCell *cell) const;
 530     void UpdateRenderingStatePost(wxHtmlRenderingInfo& info,
 531                                   wxHtmlCell *cell) const;
 532
 533 protected:
 534     int m_IndentLeft, m_IndentRight, m_IndentTop, m_IndentBottom;
 535             // indentation of subcells. There is always m_Indent pixels
 536             // big space between given border of the container and the subcells
 537             // it m_Indent < 0 it is in PERCENTS, otherwise it is in pixels
 538     int m_MinHeight, m_MinHeightAlign;
 539         // minimal height.
 540     wxHtmlCell *m_Cells, *m_LastCell;
 541             // internal cells, m_Cells points to the first of them, m_LastCell to the last one.
 542             // (LastCell is needed only to speed-up InsertCell)
 543     int m_AlignHor, m_AlignVer;
 544             // alignment horizontal and vertical (left, center, right)
 545     int m_WidthFloat, m_WidthFloatUnits;
 546             // width float is used in adjustWidth
 547     wxColour m_BkColour;
 548             // background color of this container
 549     int m_Border;
 550             // border size. Draw only if m_Border > 0
 551     wxColour m_BorderColour1, m_BorderColour2;
 552             // borders color of this container
 553     int m_LastLayout;
 554             // if != -1 then call to Layout may be no-op
 555             // if previous call to Layout has same argument
 556     int m_MaxTotalWidth;
 557             // Maximum possible length if ignoring line wrap
 558
 559
 560     DECLARE_ABSTRACT_CLASS(wxHtmlContainerCell)
 561     wxDECLARE_NO_COPY_CLASS(wxHtmlContainerCell);
 562 };
 563
 564
 565
 566 // ---------------------------------------------------------------------------
 567 // wxHtmlColourCell
 568 //                  Color changer.
 569 // ---------------------------------------------------------------------------
 570
 571 class WXDLLIMPEXP_HTML wxHtmlColourCell : public wxHtmlCell
 572 {
 573 public:
 574     wxHtmlColourCell(const wxColour& clr, int flags = wxHTML_CLR_FOREGROUND) : wxHtmlCell() {m_Colour = clr; m_Flags = flags;}
 575     virtual void Draw(wxDC& dc, int x, int y, int view_y1, int view_y2,
 576                       wxHtmlRenderingInfo& info);
 577     virtual void DrawInvisible(wxDC& dc, int x, int y,
 578                                wxHtmlRenderingInfo& info);
 579
 580 protected:
 581     wxColour m_Colour;
 582     unsigned m_Flags;
 583
 584     DECLARE_ABSTRACT_CLASS(wxHtmlColourCell)
 585     wxDECLARE_NO_COPY_CLASS(wxHtmlColourCell);
 586 };
 587
 588
 589
 590
 591 //--------------------------------------------------------------------------------
 592 // wxHtmlFontCell
 593 //                  Sets actual font used for text rendering
 594 //--------------------------------------------------------------------------------
 595
 596 class WXDLLIMPEXP_HTML wxHtmlFontCell : public wxHtmlCell
 597 {
 598 public:
 599     wxHtmlFontCell(wxFont *font) : wxHtmlCell() { m_Font = (*font); }
 600     virtual void Draw(wxDC& dc, int x, int y, int view_y1, int view_y2,
 601                       wxHtmlRenderingInfo& info);
 602     virtual void DrawInvisible(wxDC& dc, int x, int y,
 603                                wxHtmlRenderingInfo& info);
 604
 605 protected:
 606     wxFont m_Font;
 607
 608     DECLARE_ABSTRACT_CLASS(wxHtmlFontCell)
 609     wxDECLARE_NO_COPY_CLASS(wxHtmlFontCell);
 610 };
 611
 612
 613
 614
 615
 616
 617 //--------------------------------------------------------------------------------
 618 // wxHtmlwidgetCell
 619 //                  This cell is connected with wxWindow object
 620 //                  You can use it to insert windows into HTML page
 621 //                  (buttons, input boxes etc.)
 622 //--------------------------------------------------------------------------------
 623
 624 class WXDLLIMPEXP_HTML wxHtmlWidgetCell : public wxHtmlCell
 625 {
 626 public:
 627     // !!! wnd must have correct parent!
 628     // if w != 0 then the m_Wnd has 'floating' width - it adjust
 629     // it's width according to parent container's width
 630     // (w is percent of parent's width)
 631     wxHtmlWidgetCell(wxWindow *wnd, int w = 0);
 632     virtual ~wxHtmlWidgetCell() { m_Wnd->Destroy(); }
 633     virtual void Draw(wxDC& dc, int x, int y, int view_y1, int view_y2,
 634                       wxHtmlRenderingInfo& info);
 635     virtual void DrawInvisible(wxDC& dc, int x, int y,
 636                                wxHtmlRenderingInfo& info);
 637     virtual void Layout(int w);
 638
 639 protected:
 640     wxWindow* m_Wnd;
 641     int m_WidthFloat;
 642             // width float is used in adjustWidth (it is in percents)
 643
 644     DECLARE_ABSTRACT_CLASS(wxHtmlWidgetCell)
 645     wxDECLARE_NO_COPY_CLASS(wxHtmlWidgetCell);
 646 };
 647
 648
 649
 650 //--------------------------------------------------------------------------------
 651 // wxHtmlLinkInfo
 652 //                  Internal data structure. It represents hypertext link
 653 //--------------------------------------------------------------------------------
 654
 655 class WXDLLIMPEXP_HTML wxHtmlLinkInfo : public wxObject
 656 {
 657 public:
 658     wxHtmlLinkInfo() : wxObject()
 659           { m_Href = m_Target = wxEmptyString; m_Event = NULL, m_Cell = NULL; }
 660     wxHtmlLinkInfo(const wxString& href, const wxString& target = wxEmptyString) : wxObject()
 661           { m_Href = href; m_Target = target; m_Event = NULL, m_Cell = NULL; }
 662     wxHtmlLinkInfo(const wxHtmlLinkInfo& l) : wxObject()
 663           { m_Href = l.m_Href, m_Target = l.m_Target, m_Event = l.m_Event;
 664             m_Cell = l.m_Cell; }
 665     wxHtmlLinkInfo& operator=(const wxHtmlLinkInfo& l)
 666           { m_Href = l.m_Href, m_Target = l.m_Target, m_Event = l.m_Event;
 667             m_Cell = l.m_Cell; return *this; }
 668
 669     void SetEvent(const wxMouseEvent *e) { m_Event = e; }
 670     void SetHtmlCell(const wxHtmlCell *e) { m_Cell = e; }
 671
 672     wxString GetHref() const { return m_Href; }
 673     wxString GetTarget() const { return m_Target; }
 674     const wxMouseEvent* GetEvent() const { return m_Event; }
 675     const wxHtmlCell* GetHtmlCell() const { return m_Cell; }
 676
 677 private:
 678     wxString m_Href, m_Target;
 679     const wxMouseEvent *m_Event;
 680     const wxHtmlCell *m_Cell;
 681 };
 682
 683
 684
 685 // ----------------------------------------------------------------------------
 686 // wxHtmlTerminalCellsInterator
 687 // ----------------------------------------------------------------------------
 688
 689 class WXDLLIMPEXP_HTML wxHtmlTerminalCellsInterator
 690 {
 691 public:
 692     wxHtmlTerminalCellsInterator(const wxHtmlCell *from, const wxHtmlCell *to)
 693         : m_to(to), m_pos(from) {}
 694
 695     operator bool() const { return m_pos != NULL; }
 696     const wxHtmlCell* operator++();
 697     const wxHtmlCell* operator->() const { return m_pos; }
 698     const wxHtmlCell* operator*() const { return m_pos; }
 699
 700 private:
 701     const wxHtmlCell *m_to, *m_pos;
 702 };
 703
 704
 705
 706 #endif // wxUSE_HTML
 707
 708 #endif // _WX_HTMLCELL_H_
 709