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 // wxCanvas
  79 //----------------------------------------------------------------------------
  80
  81 class wxCanvas: public wxScrolledWindow
  82 {
  83 public:
  84     // constructors and destructors
  85     wxCanvas( wxWindow *parent, wxWindowID id = -1,
  86         const wxPoint& pos = wxDefaultPosition,
  87         const wxSize& size = wxDefaultSize,
  88         long style = wxScrolledWindowStyle );
  89     virtual ~wxCanvas();
  90
  91     virtual void SetArea( int width, int height );
  92     virtual void Update( int x, int y, int width, int height );
  93     virtual void UpdateNow();
  94
  95     virtual void Prepend( wxCanvasObject* obj );
  96     virtual void Append( wxCanvasObject* obj );
  97     virtual void Insert( size_t before, wxCanvasObject* obj );
  98     virtual void Remove( wxCanvasObject* obj );
  99
 100     wxImage *GetBuffer()         { return &m_buffer; }
 101     bool NeedUpdate()            { return m_needUpdate; }
 102
 103 private:
 104     wxImage     m_buffer;
 105     bool        m_needUpdate;
 106     wxList      m_updateRects;
 107     wxList      m_objects;
 108
 109     friend class wxCanvasObject;
 110
 111 private:
 112     void OnChar( wxKeyEvent &event );
 113     void OnPaint( wxPaintEvent &event );
 114     void OnMouse( wxMouseEvent &event );
 115     void OnSize( wxSizeEvent &event );
 116     void OnIdle( wxIdleEvent &event );
 117     void OnSetFocus( wxFocusEvent &event );
 118     void OnKillFocus( wxFocusEvent &event );
 119
 120 private:
 121     DECLARE_CLASS(wxCanvas)
 122     DECLARE_EVENT_TABLE()
 123 };
 124
 125
 126 #endif
 127     // WXCANVAS
 128