contrib/include/wx/canvas/canvas.h

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        canvas.h
   3 // Author:      Robert Roebling
   4 // Created:     XX/XX/XX
   5 // Copyright:   2000 (c) Robert Roebling
   6 // Licence:     wxWindows Licence
   7 /////////////////////////////////////////////////////////////////////////////
   8
   9 #ifndef __WXCANVAS_H__
  10 #define __WXCANVAS_H__
  11
  12 #ifdef __GNUG__
  13     #pragma interface "canvas.cpp"
  14 #endif
  15
  16 #ifndef WX_PRECOMP
  17     #include "wx/wx.h"
  18 #endif
  19
  20 #include "wx/image.h"
  21 #include "wx/txtstrm.h"
  22
  23 class wxCanvas;
  24
  25 // WDR: class declarations
  26
  27 //----------------------------------------------------------------------------
  28 // wxCanvasObject
  29 //----------------------------------------------------------------------------
  30
  31 class wxCanvasObject: public wxEvtHandler
  32 {
  33 public:
  34     wxCanvasObject( int x, int y, int width, int height );
  35
  36     virtual void Move( int x, int y );
  37     virtual void Render( int clip_x, int clip_y, int clip_width, int clip_height );
  38     virtual void WriteSVG( wxTextOutputStream &stream );
  39
  40     wxCanvas   *GetOwner()              { return m_owner; }
  41     void SetOwner( wxCanvas *owner )    { m_owner = owner; }
  42
  43     bool        IsControl()     { return m_isControl; }
  44     bool        IsVector()      { return m_isVector; }
  45     bool        IsImage()       { return m_isImage; }
  46     inline int  GetX()          { return m_area.x; }
  47     inline int  GetY()          { return m_area.y; }
  48     inline int  GetWidth()      { return m_area.width; }
  49     inline int  GetHeight()     { return m_area.height; }
  50
  51 protected:
  52     wxCanvas   *m_owner;
  53     bool        m_isControl;
  54     bool        m_isVector;
  55     bool        m_isImage;
  56     wxRect      m_area;
  57
  58     friend class wxCanvas;
  59 };
  60
  61 //----------------------------------------------------------------------------
  62 // wxCanvasImage
  63 //----------------------------------------------------------------------------
  64
  65 class wxCanvasImage: public wxCanvasObject
  66 {
  67 public:
  68     wxCanvasImage( const wxImage &image, int x, int y );
  69
  70     virtual void Render( int clip_x, int clip_y, int clip_width, int clip_height );
  71     virtual void WriteSVG( wxTextOutputStream &stream );
  72
  73 private:
  74     wxImage     m_image;
  75 };
  76
  77 //----------------------------------------------------------------------------
  78 // wxCanvasControl
  79 //----------------------------------------------------------------------------
  80
  81 class wxCanvasControl: public wxCanvasObject
  82 {
  83 public:
  84     wxCanvasControl( wxWindow *control );
  85     ~wxCanvasControl();
  86
  87     virtual void Move( int x, int y );
  88     void UpdateSize();
  89
  90 private:
  91     wxWindow     *m_control;
  92 };
  93
  94 //----------------------------------------------------------------------------
  95 // wxCanvasText
  96 //----------------------------------------------------------------------------
  97
  98 class wxCanvasText: public wxCanvasObject
  99 {
 100 public:
 101     wxCanvasText( const wxString &text, int x, int y );
 102     ~wxCanvasText();
 103
 104     virtual void Render( int clip_x, int clip_y, int clip_width, int clip_height );
 105     virtual void WriteSVG( wxTextOutputStream &stream );
 106
 107     void CreateBuffer();
 108     void SetRGB( unsigned char red, unsigned char green, unsigned char blue );
 109     void SetFlag( int flag );
 110
 111 private:
 112     wxString        m_text;
 113     unsigned char  *m_alpha;
 114     void           *m_faceData;
 115     int             m_flag;
 116     int             m_red;
 117     int             m_green;
 118     int             m_blue;
 119 };
 120
 121 //----------------------------------------------------------------------------
 122 // wxCanvas
 123 //----------------------------------------------------------------------------
 124
 125 class wxCanvas: public wxScrolledWindow
 126 {
 127 public:
 128     // constructors and destructors
 129     wxCanvas( wxWindow *parent, wxWindowID id = -1,
 130         const wxPoint& pos = wxDefaultPosition,
 131         const wxSize& size = wxDefaultSize,
 132         long style = wxScrolledWindowStyle );
 133     virtual ~wxCanvas();
 134
 135     virtual void SetArea( int width, int height );
 136     virtual void Update( int x, int y, int width, int height );
 137     virtual void UpdateNow();
 138
 139     virtual void Prepend( wxCanvasObject* obj );
 140     virtual void Append( wxCanvasObject* obj );
 141     virtual void Insert( size_t before, wxCanvasObject* obj );
 142     virtual void Remove( wxCanvasObject* obj );
 143
 144     wxImage *GetBuffer()         { return &m_buffer; }
 145     bool NeedUpdate()            { return m_needUpdate; }
 146
 147     void BlitBuffer( wxDC &dc );
 148
 149 private:
 150     wxImage     m_buffer;
 151     bool        m_needUpdate;
 152     wxList      m_updateRects;
 153     wxList      m_objects;
 154
 155     friend class wxCanvasObject;
 156
 157 private:
 158     void OnChar( wxKeyEvent &event );
 159     void OnPaint( wxPaintEvent &event );
 160     void OnMouse( wxMouseEvent &event );
 161     void OnSize( wxSizeEvent &event );
 162     void OnIdle( wxIdleEvent &event );
 163     void OnSetFocus( wxFocusEvent &event );
 164     void OnKillFocus( wxFocusEvent &event );
 165
 166 private:
 167     DECLARE_CLASS(wxCanvas)
 168     DECLARE_EVENT_TABLE()
 169 };
 170
 171
 172 #endif
 173     // WXCANVAS
 174