enabling alpha on msw colour

[wxWidgets.git] / include / wx / gtk / dc.h

diff --git a/include/wx/gtk/dc.h b/include/wx/gtk/dc.h
index 1c778cfbf8474fa8037ac67a3ffbb3455ae60375..9534317f423c7ad51c41acf288352fc13d70d8d9 100644 (file)
--- a/include/wx/gtk/dc.h
+++ b/include/wx/gtk/dc.h
@@ -1,299 +1,161 @@
 /////////////////////////////////////////////////////////////////////////////
 /////////////////////////////////////////////////////////////////////////////

-// Name:        dc.h
+// Name:        wx/gtk/dc.h

 // Purpose:
 // Author:      Robert Roebling
 // Id:          $Id$
 // Copyright:   (c) 1998 Robert Roebling
 // Purpose:
 // Author:      Robert Roebling
 // Id:          $Id$
 // Copyright:   (c) 1998 Robert Roebling

-// Licence:    wxWindows licence
+// Licence:     wxWindows licence

 /////////////////////////////////////////////////////////////////////////////
 
 /////////////////////////////////////////////////////////////////////////////
 

-

 #ifndef __GTKDCH__
 #define __GTKDCH__
 
 #ifndef __GTKDCH__
 #define __GTKDCH__
 

-#ifdef __GNUG__
-#pragma interface
-#endif
-
-#include "wx/defs.h"
-#include "wx/object.h"
-#include "wx/gdicmn.h"
-#include "wx/pen.h"
-#include "wx/brush.h"
-#include "wx/icon.h"
-#include "wx/font.h"
-#include "wx/gdicmn.h"
-
-//-----------------------------------------------------------------------------
-// classes
-//-----------------------------------------------------------------------------
-
-class wxDC;
-

 //-----------------------------------------------------------------------------
 // constants
 //-----------------------------------------------------------------------------
 
 //-----------------------------------------------------------------------------
 // constants
 //-----------------------------------------------------------------------------
 

-#define MM_TEXT                        0
-#define MM_ISOTROPIC           1
-#define MM_ANISOTROPIC         2
-#define MM_LOMETRIC            3
-#define MM_HIMETRIC            4
-#define MM_TWIPS               5
-#define MM_POINTS              6
-#define MM_METRIC              7
+#ifndef MM_TEXT
+#define MM_TEXT         0
+#define MM_ISOTROPIC    1
+#define MM_ANISOTROPIC  2
+#define MM_LOMETRIC     3
+#define MM_HIMETRIC     4
+#define MM_TWIPS        5
+#define MM_POINTS       6
+#define MM_METRIC       7
+#endif

 
 //-----------------------------------------------------------------------------
 
 //-----------------------------------------------------------------------------

-// global variables
+// coordinates transformations

 //-----------------------------------------------------------------------------
 
 //-----------------------------------------------------------------------------
 

-extern int wxPageNumber;
+inline wxCoord wxDCBase::DeviceToLogicalX(wxCoord x) const
+{
+    return wxRound((x - m_deviceOriginX) / m_scaleX) * m_signX + m_logicalOriginX;
+}
+inline wxCoord wxDCBase::DeviceToLogicalY(wxCoord y) const
+{
+    return wxRound((y - m_deviceOriginY) / m_scaleY) * m_signY + m_logicalOriginY;
+}
+inline wxCoord wxDCBase::DeviceToLogicalXRel(wxCoord x) const
+{
+    return wxRound(x / m_scaleX);
+}
+inline wxCoord wxDCBase::DeviceToLogicalYRel(wxCoord y) const
+{
+    return wxRound(y / m_scaleY);
+}
+inline wxCoord wxDCBase::LogicalToDeviceX(wxCoord x) const
+{
+    return wxRound((x - m_logicalOriginX) * m_scaleX) * m_signX + m_deviceOriginX;
+}
+inline wxCoord wxDCBase::LogicalToDeviceY(wxCoord y) const
+{
+    return wxRound((y - m_logicalOriginY) * m_scaleY) * m_signY + m_deviceOriginY;
+}
+inline wxCoord wxDCBase::LogicalToDeviceXRel(wxCoord x) const
+{
+    return wxRound(x * m_scaleX);
+}
+inline wxCoord wxDCBase::LogicalToDeviceYRel(wxCoord y) const
+{
+    return wxRound(y * m_scaleY);
+}

 
 //-----------------------------------------------------------------------------
 // wxDC
 //-----------------------------------------------------------------------------
 
 
 //-----------------------------------------------------------------------------
 // wxDC
 //-----------------------------------------------------------------------------
 

-class wxDC: public wxObject
+class WXDLLIMPEXP_CORE wxDC : public wxDCBase

 {
 {

-  DECLARE_ABSTRACT_CLASS(wxDC)
-
-  public:
+public:
+    wxDC();
+    virtual ~wxDC() { }

 
 

-    wxDC(void);
-    ~wxDC(void);
-    
-    void BeginDrawing(void) {};
-    void EndDrawing(void) {};
-    
-    virtual bool Ok(void) const;
+#if wxUSE_PALETTE
+    void SetColourMap( const wxPalette& palette ) { SetPalette(palette); };
+#endif // wxUSE_PALETTE

 
 

-    virtual void FloodFill( long x1, long y1, wxColour *col, int style=wxFLOOD_SURFACE ) = 0;
-    virtual bool GetPixel( long x1, long y1, wxColour *col ) const = 0;
+    // Resolution in pixels per logical inch
+    virtual wxSize GetPPI() const;

 
 

-    virtual void DrawLine( long x1, long y1, long x2, long y2 ) = 0;
-    virtual void CrossHair( long x, long y ) = 0;
-    virtual void DrawArc( long x1, long y1, long x2, long y2, double xc, double yc );
-    virtual void DrawEllipticArc( long x, long y, long width, long height, double sa, double ea ) = 0;
-    virtual void DrawPoint( long x, long y ) = 0;
-    virtual void DrawPoint( wxPoint& point );
-    
-    virtual void DrawLines( int n, wxPoint points[], long xoffset = 0, long yoffset = 0 ) = 0;
-    virtual void DrawLines( wxList *points, long xoffset = 0, long yoffset = 0 );
-    virtual void DrawPolygon( int n, wxPoint points[], long xoffset = 0, long yoffset = 0, 
-                              int fillStyle=wxODDEVEN_RULE ) = 0;
-    virtual void DrawPolygon( wxList *lines, long xoffset = 0, long yoffset = 0, 
-                              int fillStyle=wxODDEVEN_RULE );
-    
-    virtual void DrawRectangle( long x, long y, long width, long height ) = 0;
-    virtual void DrawRoundedRectangle( long x, long y, long width, long height, double radius = 20.0 ) = 0;
-    virtual void DrawEllipse( long x, long y, long width, long height ) = 0;
-    
-    virtual void DrawSpline( long x1, long y1, long x2, long y2, long x3, long y3 );
-    virtual void DrawSpline( wxList *points ) = 0;
-    virtual void DrawSpline( int n, wxPoint points[] );
-    
-    virtual bool CanDrawBitmap(void) const = 0;
-    virtual void DrawIcon( const wxIcon &icon, long x, long y )
-      { DrawIcon( icon, x, y, TRUE ); }
-    virtual void DrawIcon( const wxIcon &icon, long x, long y, bool useMask );
-            void DrawBitmap( const wxBitmap &bmp, long x, long y, bool useMask=FALSE )
-           { DrawIcon( *((wxIcon*)(&bmp)), x, y, useMask ); }
-    virtual bool Blit( long xdest, long ydest, long width, long height,
-       wxDC *source, long xsrc, long ysrc, int logical_func = wxCOPY, bool useMask=FALSE ) = 0;
+    virtual bool StartDoc( const wxString& WXUNUSED(message) ) { return true; }
+    virtual void EndDoc() { }
+    virtual void StartPage() { }
+    virtual void EndPage() { }

 
 

-    virtual void DrawText( const wxString &text, long x, long y, bool use16 = FALSE ) = 0;
-    virtual bool CanGetTextExtent(void) const = 0;
-    virtual void GetTextExtent( const wxString &string, long *width, long *height,
-                     long *descent = (long *) NULL, long *externalLeading = (long *) NULL,
-                     wxFont *theFont = (wxFont *) NULL, bool use16 = FALSE ) = 0;
-    virtual long GetCharWidth(void) = 0;
-    virtual long GetCharHeight(void) = 0;
-    
-    virtual void Clear(void) = 0;
-            
-    virtual void SetFont( const wxFont &font ) = 0;
-    virtual wxFont *GetFont(void) { return &m_font; };
-    
-    virtual void SetPen( const wxPen &pen ) = 0;
-    virtual wxPen *GetPen(void) { return &m_pen; };
-    
-    virtual void SetBrush( const wxBrush &brush ) = 0;
-    virtual wxBrush *GetBrush(void) { return &m_brush; };
-
-    virtual void SetBackground( const wxBrush &brush ) = 0;
-    virtual wxBrush *GetBackground(void) { return &m_backgroundBrush; };
-
-    virtual void SetLogicalFunction( int function ) = 0;
-    virtual int GetLogicalFunction(void) { return m_logicalFunction; };
-    
-    virtual void SetTextForeground( const wxColour &col );
-    virtual void SetTextBackground( const wxColour &col );
-    virtual wxColour& GetTextBackground(void) const { return (wxColour&)m_textBackgroundColour; };
-    virtual wxColour& GetTextForeground(void) const { return (wxColour&)m_textForegroundColour; };
-    
-    virtual void SetBackgroundMode( int mode ) = 0;
-    virtual int GetBackgroundMode(void) { return m_backgroundMode; };
-    
-    virtual void SetPalette( const wxPalette& palette ) = 0;
-      void SetColourMap( const wxPalette& palette ) { SetPalette(palette); };
-    
-    // the first two must be overridden and called
-    virtual void SetClippingRegion( long x, long y, long width, long height );
-    virtual void DestroyClippingRegion(void);
-    virtual void GetClippingBox( long *x, long *y, long *width, long *height ) const;
-    
-    virtual inline long MinX(void) const { return m_minX; }
-    virtual inline long MaxX(void) const { return m_maxX; }
-    virtual inline long MinY(void) const { return m_minY; }
-    virtual inline long MaxY(void) const { return m_maxY; }
-
-    virtual void GetSize( int* width, int* height ) const;
-    inline wxSize GetSize(void) const { int w, h; GetSize(&w, &h); return wxSize(w, h); }
-    virtual void GetSizeMM( long* width, long* height ) const;
-    
-    virtual bool StartDoc( const wxString& WXUNUSED(message) ) { return TRUE; };
-    virtual void EndDoc(void) {};
-    virtual void StartPage(void) {};
-    virtual void EndPage(void) {};
-    

     virtual void SetMapMode( int mode );
     virtual void SetMapMode( int mode );

-    virtual int GetMapMode(void) const { return m_mappingMode; };
-    

     virtual void SetUserScale( double x, double y );
     virtual void SetUserScale( double x, double y );

-    virtual void GetUserScale( double *x, double *y );

     virtual void SetLogicalScale( double x, double y );
     virtual void SetLogicalScale( double x, double y );

-    virtual void GetLogicalScale( double *x, double *y );
-    
-    virtual void SetLogicalOrigin( long x, long y );
-    virtual void GetLogicalOrigin( long *x, long *y );
-    virtual void SetDeviceOrigin( long x, long y );
-    virtual void GetDeviceOrigin( long *x, long *y );
+    virtual void SetLogicalOrigin( wxCoord x, wxCoord y );
+    virtual void SetDeviceOrigin( wxCoord x, wxCoord y );

 
     virtual void SetAxisOrientation( bool xLeftRight, bool yBottomUp );
 
     virtual void SetAxisOrientation( bool xLeftRight, bool yBottomUp );

-    
-    virtual void SetOptimization( bool WXUNUSED(optimize) ) {};
-    virtual bool GetOptimization(void) { return m_optimize; };
-    
-    virtual long DeviceToLogicalX(long x) const;
-    virtual long DeviceToLogicalY(long y) const;
-    virtual long DeviceToLogicalXRel(long x) const;
-    virtual long DeviceToLogicalYRel(long y) const;
-    virtual long LogicalToDeviceX(long x) const;
-    virtual long LogicalToDeviceY(long y) const;
-    virtual long LogicalToDeviceXRel(long x) const;
-    virtual long LogicalToDeviceYRel(long y) const;

 
 

-  public:
-  
-    void CalcBoundingBox( long x, long y );
-    void ComputeScaleAndOrigin(void);
-    
-    long XDEV2LOG(long x) const
-       {
-         long new_x = x - m_deviceOriginX;
-         if (new_x > 0) 
-           return (long)((double)(new_x) / m_scaleX + 0.5) * m_signX + m_logicalOriginX;
-         else
-           return (long)((double)(new_x) / m_scaleX - 0.5) * m_signX + m_logicalOriginX;
-       }
-    long XDEV2LOGREL(long x) const
-       { 
-         if (x > 0) 
-           return (long)((double)(x) / m_scaleX + 0.5);
-         else
-           return (long)((double)(x) / m_scaleX - 0.5);
-       }
-    long YDEV2LOG(long y) const
-       {
-         long new_y = y - m_deviceOriginY;
-         if (new_y > 0)
-           return (long)((double)(new_y) / m_scaleY + 0.5) * m_signY + m_logicalOriginY;
-         else
-           return (long)((double)(new_y) / m_scaleY - 0.5) * m_signY + m_logicalOriginY;
-       }
-    long YDEV2LOGREL(long y) const
-       { 
-         if (y > 0)
-           return (long)((double)(y) / m_scaleY + 0.5);
-         else
-           return (long)((double)(y) / m_scaleY - 0.5);
-       }
-    long XLOG2DEV(long x) const
-       { 
-         long new_x = x - m_logicalOriginX;
-         if (new_x > 0)
-           return (long)((double)(new_x) * m_scaleX + 0.5) * m_signX + m_deviceOriginX;
-         else
-           return (long)((double)(new_x) * m_scaleX - 0.5) * m_signX + m_deviceOriginX;
-       }
-    long XLOG2DEVREL(long x) const
-       { 
-         if (x > 0)
-           return (long)((double)(x) * m_scaleX + 0.5);
-         else
-           return (long)((double)(x) * m_scaleX - 0.5);
-       }
-    long YLOG2DEV(long y) const
-       {
-         long new_y = y - m_logicalOriginY;
-         if (new_y > 0)
-           return (long)((double)(new_y) * m_scaleY + 0.5) * m_signY + m_deviceOriginY;
-         else
-           return (long)((double)(new_y) * m_scaleY - 0.5) * m_signY + m_deviceOriginY;
-       }
-    long YLOG2DEVREL(long y) const
-       { 
-         if (y > 0)
-           return (long)((double)(y) * m_scaleY + 0.5);
-         else
-           return (long)((double)(y) * m_scaleY - 0.5);
-       }
-  
-       
-  public:
-    
-    bool         m_ok;
-    bool         m_colour;
-    
-    // not sure, what these mean
-    bool         m_clipping;      // Is clipping on right now ?
-    bool         m_isInteractive; // Is GetPixel possible ?
-    bool         m_autoSetting;   // wxMSW only ?
-    bool         m_dontDelete;    // wxMSW only ?
-    bool         m_optimize;      // wxMSW only ?
-    wxString     m_filename;      // Not sure where this belongs.
-    
-    wxPen        m_pen;
-    wxBrush      m_brush;
-    wxBrush      m_backgroundBrush;
-    wxColour     m_textForegroundColour;
-    wxColour     m_textBackgroundColour;
-    wxFont       m_font;
-    
-    int          m_logicalFunction;
-    int          m_backgroundMode;
-    int          m_textAlignment;    // gone in wxWin 2.0 ?
-    
-    int          m_mappingMode;
-    
-    // not sure what for, but what is a mm on a screen you don't know the size of?
-    double       m_mm_to_pix_x,m_mm_to_pix_y; 
-    
-    long         m_deviceOriginX,m_deviceOriginY;                   // Sum of the two above.
-    
-    long         m_logicalOriginX,m_logicalOriginY;                 // User defined.
-
-    double       m_scaleX,m_scaleY;
-    double       m_logicalScaleX,m_logicalScaleY;
-    double       m_userScaleX,m_userScaleY;
-    long         m_signX,m_signY;
-    
-    bool         m_needComputeScaleX,m_needComputeScaleY;         // not yet used
-    
-    float        m_scaleFactor;  // wxPSDC wants to have this. Will disappear.
-    
-    long         m_clipX1,m_clipY1,m_clipX2,m_clipY2;
-    long         m_minX,m_maxX,m_minY,m_maxY;
+    virtual void ComputeScaleAndOrigin();
+
+protected:
+    // implementation
+    // --------------
+
+    wxCoord XDEV2LOG(wxCoord x) const
+    {
+        return DeviceToLogicalX(x);
+    }
+    wxCoord XDEV2LOGREL(wxCoord x) const
+    {
+        return DeviceToLogicalXRel(x);
+    }
+    wxCoord YDEV2LOG(wxCoord y) const
+    {
+        return DeviceToLogicalY(y);
+    }
+    wxCoord YDEV2LOGREL(wxCoord y) const
+    {
+        return DeviceToLogicalYRel(y);
+    }
+    wxCoord XLOG2DEV(wxCoord x) const
+    {
+        return LogicalToDeviceX(x);
+    }
+    wxCoord XLOG2DEVREL(wxCoord x) const
+    {
+        return LogicalToDeviceXRel(x);
+    }
+    wxCoord YLOG2DEV(wxCoord y) const
+    {
+        return LogicalToDeviceY(y);
+    }
+    wxCoord YLOG2DEVREL(wxCoord y) const
+    {
+        return LogicalToDeviceYRel(y);
+    }
+
+    // base class pure virtuals implemented here
+    virtual void DoSetClippingRegion(wxCoord x, wxCoord y, wxCoord width, wxCoord height);
+    virtual void DoGetSizeMM(int* width, int* height) const;
+
+public:
+    // GTK-specific member variables
+
+    // not sure what for, but what is a mm on a screen you don't know the size
+    // of?
+    double       m_mm_to_pix_x,
+                 m_mm_to_pix_y;
+
+    bool         m_needComputeScaleX,
+                 m_needComputeScaleY; // not yet used
+
+
+private:
+    DECLARE_ABSTRACT_CLASS(wxDC)

 };
 
 };
 

+// this must be defined when wxDC::Blit() honours the DC origian and needed to
+// allow wxUniv code in univ/winuniv.cpp to work with versions of wxGTK
+// 2.3.[23]
+#ifndef wxHAS_WORKING_GTK_DC_BLIT
+    #define wxHAS_WORKING_GTK_DC_BLIT
+#endif
+

 #endif // __GTKDCH__
 #endif // __GTKDCH__