///////////////////////////////////////////////////////////////////////////// // Name: canvas.h // Author: Robert Roebling // Created: XX/XX/XX // Copyright: 2000 (c) Robert Roebling // Licence: wxWindows Licence ///////////////////////////////////////////////////////////////////////////// #ifndef __WXCANVAS_H__ #define __WXCANVAS_H__ #ifdef __GNUG__ #pragma interface "canvas.cpp" #endif #ifndef WX_PRECOMP #include "wx/wx.h" #endif #include "wx/image.h" #include "wx/txtstrm.h" //---------------------------------------------------------------------------- // decls //---------------------------------------------------------------------------- #define IMAGE_CANVAS 0 class wxCanvas; //---------------------------------------------------------------------------- // wxCanvasObject //---------------------------------------------------------------------------- class wxCanvasObject: public wxEvtHandler { public: wxCanvasObject(); // Area occupied by object. Used for clipping, intersection, // mouse enter etc. Screen coordinates void SetArea( int x, int y, int width, int height ); void SetArea( wxRect rect ); // These are for screen output only therefore use // int as coordinates. virtual bool IsHit( int x, int y, int margin = 0 ); virtual void Render(int xabs, int yabs, int clip_x, int clip_y, int clip_width, int clip_height ); // use doubles later virtual void Move( int x, int y ); // Once we have world coordinates in doubles, this will get // called for every object if the world coordinate system // changes (zooming). virtual void Recreate(); // Later... virtual void WriteSVG( wxTextOutputStream &stream ); wxCanvas *GetOwner() { return m_owner; } virtual void SetOwner( wxCanvas *owner ) { m_owner = owner; } bool IsControl() { return m_isControl; } bool IsVector() { return m_isVector; } bool IsImage() { return m_isImage; } inline int GetX() { return m_area.x; } inline int GetY() { return m_area.y; } inline int GetWidth() { return m_area.width; } inline int GetHeight() { return m_area.height; } void CaptureMouse(); void ReleaseMouse(); bool IsCapturedMouse(); protected: wxCanvas *m_owner; bool m_isControl; bool m_isVector; bool m_isImage; //relative boundingbox in parent in pixels wxRect m_area; friend class wxCanvas; }; //---------------------------------------------------------------------------- // wxCanvasObjectGroup //---------------------------------------------------------------------------- class wxCanvasObjectGroup { public: wxCanvasObjectGroup(); virtual ~wxCanvasObjectGroup(); void SetOwner(wxCanvas* canvas); wxCanvas *GetOwner() { return m_owner; } virtual void Prepend( wxCanvasObject* obj ); virtual void Append( wxCanvasObject* obj ); virtual void Insert( size_t before, wxCanvasObject* obj ); virtual void Remove( wxCanvasObject* obj ); virtual void Recreate(); void DeleteContents( bool ); virtual void Render(int xabs, int yabs,int x, int y, int width, int height ); virtual void WriteSVG( wxTextOutputStream &stream ); virtual bool IsHit( int x, int y, int margin ); virtual wxCanvasObject* IsHitObject( int x, int y, int margin ); void ExtendArea(int x, int y); inline int GetXMin() { return m_minx; } inline int GetYMin() { return m_miny; } inline int GetXMax() { return m_maxx; } inline int GetYMax() { return m_maxy; } protected: wxCanvas *m_owner; //bounding box double m_minx; double m_miny; double m_maxx; double m_maxy; bool m_validbounds; wxList m_objects; friend class wxCanvas; }; //---------------------------------------------------------------------------- // wxCanvasObjectGroupRef //---------------------------------------------------------------------------- class wxCanvasObjectGroupRef: public wxCanvasObject { public: wxCanvasObjectGroupRef(double x, double y,wxCanvasObjectGroup* group); void SetOwner(wxCanvas* canvas); virtual void Recreate(); virtual void Render(int xabs, int yabs,int x, int y, int width, int height ); virtual void WriteSVG( wxTextOutputStream &stream ); virtual bool IsHit( int x, int y, int margin ); void Move( int x, int y ); inline int GetPosX() { return m_x; } inline int GetPosY() { return m_y; } void ExtendArea(int x, int y); virtual wxCanvasObject* IsHitObject( int x, int y, int margin ); protected: //position of the group double m_x; double m_y; //reference to the group wxCanvasObjectGroup* m_group; //bounding box double m_minx; double m_miny; double m_maxx; double m_maxy; bool m_validbounds; }; //---------------------------------------------------------------------------- // wxCanvasRect //---------------------------------------------------------------------------- class wxCanvasRect: public wxCanvasObject { public: wxCanvasRect( double x, double y, double w, double h, unsigned char red, unsigned char green, unsigned char blue ); virtual void Recreate(); virtual void Render(int xabs, int yabs, int clip_x, int clip_y, int clip_width, int clip_height ); virtual void WriteSVG( wxTextOutputStream &stream ); private: double m_x; double m_y; double m_width; double m_height; unsigned char m_red; unsigned char m_green; unsigned char m_blue; }; //---------------------------------------------------------------------------- // wxCanvasLine //---------------------------------------------------------------------------- class wxCanvasLine: public wxCanvasObject { public: wxCanvasLine( double x1, double y1, double x2, double y2, unsigned char red, unsigned char green, unsigned char blue ); virtual void Recreate(); virtual void Render(int xabs, int yabs, int clip_x, int clip_y, int clip_width, int clip_height ); virtual void WriteSVG( wxTextOutputStream &stream ); private: double m_x1; double m_y1; double m_x2; double m_y2; unsigned char m_red; unsigned char m_green; unsigned char m_blue; }; //---------------------------------------------------------------------------- // wxCanvasImage //---------------------------------------------------------------------------- class wxCanvasImage: public wxCanvasObject { public: wxCanvasImage( const wxImage &image, double x, double y, double w, double h ); virtual void Recreate(); virtual void Render(int xabs, int yabs, int clip_x, int clip_y, int clip_width, int clip_height ); virtual void WriteSVG( wxTextOutputStream &stream ); private: double m_x; double m_y; double m_width; double m_height; wxImage m_image; #if IMAGE_CANVAS wxImage m_tmp; #else wxBitmap m_tmp; #endif }; //---------------------------------------------------------------------------- // wxCanvasControl //---------------------------------------------------------------------------- class wxCanvasControl: public wxCanvasObject { public: wxCanvasControl( wxWindow *control ); ~wxCanvasControl(); virtual void Recreate(); virtual void Move( int x, int y ); private: wxWindow *m_control; }; //---------------------------------------------------------------------------- // wxCanvasText //---------------------------------------------------------------------------- class wxCanvasText: public wxCanvasObject { public: wxCanvasText( const wxString &text, double x, double y, const wxString &foneFile, int size ); ~wxCanvasText(); void Recreate(); virtual void Render(int xabs, int yabs, int clip_x, int clip_y, int clip_width, int clip_height ); virtual void WriteSVG( wxTextOutputStream &stream ); void SetRGB( unsigned char red, unsigned char green, unsigned char blue ); void SetFlag( int flag ); int GetFlag() { return m_flag; } private: wxString m_text; double m_x; double m_y; unsigned char *m_alpha; void *m_faceData; int m_flag; int m_red; int m_green; int m_blue; wxString m_fontFileName; int m_size; }; //---------------------------------------------------------------------------- // wxCanvas //---------------------------------------------------------------------------- class wxCanvas: public wxScrolledWindow { public: // constructors and destructors wxCanvas( wxWindow *parent, wxWindowID id = -1, const wxPoint& pos = wxDefaultPosition, const wxSize& size = wxDefaultSize, long style = wxScrolledWindowStyle ); virtual ~wxCanvas(); virtual void SetArea( int width, int height ); virtual void SetColour( unsigned char red, unsigned char green, unsigned char blue ); virtual void Update( int x, int y, int width, int height, bool blit = TRUE ); virtual void UpdateNow(); virtual void Freeze(); virtual void Thaw(); virtual void Prepend( wxCanvasObject* obj ); virtual void Append( wxCanvasObject* obj ); virtual void Insert( size_t before, wxCanvasObject* obj ); virtual void Remove( wxCanvasObject* obj ); // override these to change your coordiate system ... virtual int GetDeviceX( double x ); virtual int GetDeviceY( double y ); virtual int GetDeviceWidth( double width ); virtual int GetDeviceHeight( double height ); // ... and call this to tell all objets to recreate then virtual void Recreate(); #if IMAGE_CANVAS inline wxImage *GetBuffer() { return &m_buffer; } #else inline wxBitmap *GetBuffer() { return &m_buffer; } inline wxMemoryDC *GetDC() { return m_renderDC; } #endif inline int GetBufferX() { return m_bufferX; } inline int GetBufferY() { return m_bufferY; } inline int GetBufferWidth() { return m_buffer.GetWidth(); } inline int GetBufferHeight() { return m_buffer.GetHeight(); } bool NeedUpdate() { return m_needUpdate; } bool IsFrozen() { return m_frozen; } void BlitBuffer( wxDC &dc ); void SetCaptureMouse( wxCanvasObject *obj ); virtual void ScrollWindow( int dx, int dy, const wxRect* rect = (wxRect *) NULL ); private: #if IMAGE_CANVAS wxImage m_buffer; #else wxBitmap m_buffer; wxMemoryDC *m_renderDC; #endif int m_bufferX; int m_bufferY; bool m_needUpdate; wxList m_updateRects; wxCanvasObjectGroup* m_root; unsigned char m_green,m_red,m_blue; bool m_frozen; wxCanvasObject *m_lastMouse; wxCanvasObject *m_captureMouse; friend class wxCanvasObject; private: void OnChar( wxKeyEvent &event ); void OnPaint( wxPaintEvent &event ); void OnMouse( wxMouseEvent &event ); void OnSize( wxSizeEvent &event ); void OnIdle( wxIdleEvent &event ); void OnSetFocus( wxFocusEvent &event ); void OnKillFocus( wxFocusEvent &event ); void OnEraseBackground( wxEraseEvent &event ); private: DECLARE_CLASS(wxCanvas) DECLARE_EVENT_TABLE() }; #endif // WXCANVAS