Remove SetPageTitle and GetPageTitle and make GetCurrentTitle actually return the...

[wxWidgets.git] / include / wx / graphics.h

diff --git a/include/wx/graphics.h b/include/wx/graphics.h
index 34f92d7cd509bcf2eafffa01993128b79a36cd64..0d472b5bca736e82482c96621fc33c2b1ef75410 100644 (file)
--- a/include/wx/graphics.h
+++ b/include/wx/graphics.h
@@ -19,6 +19,7 @@
 #include "wx/geometry.h"
 #include "wx/dynarray.h"
 #include "wx/dc.h"
 #include "wx/geometry.h"
 #include "wx/dynarray.h"
 #include "wx/dc.h"

+#include "wx/vector.h"

 
 enum wxAntialiasMode
 {
 
 enum wxAntialiasMode
 {


@@ -26,6 +27,20 @@ enum wxAntialiasMode
     wxANTIALIAS_DEFAULT,
 };
 
     wxANTIALIAS_DEFAULT,
 };
 

+enum wxInterpolationQuality
+{
+    // default interpolation
+    wxINTERPOLATION_DEFAULT,
+    // no interpolation
+    wxINTERPOLATION_NONE, 
+    // fast interpolation, suited for interactivity
+    wxINTERPOLATION_FAST,
+    // better quality
+    wxINTERPOLATION_GOOD,
+    // best quality, not suited for interactivity
+    wxINTERPOLATION_BEST
+};
+

 enum wxCompositionMode
 {
     // R = Result, S = Source, D = Destination, premultiplied with alpha
 enum wxCompositionMode
 {
     // R = Result, S = Source, D = Destination, premultiplied with alpha


@@ -34,6 +49,7 @@ enum wxCompositionMode
     // classic Porter-Duff compositions
     // http://keithp.com/~keithp/porterduff/p253-porter.pdf
 
     // classic Porter-Duff compositions
     // http://keithp.com/~keithp/porterduff/p253-porter.pdf
 

+    wxCOMPOSITION_INVALID = -1, /* indicates invalid/unsupported mode */

     wxCOMPOSITION_CLEAR, /* R = 0 */
     wxCOMPOSITION_SOURCE, /* R = S */
     wxCOMPOSITION_OVER, /* R = S + D*(1 - Sa) */
     wxCOMPOSITION_CLEAR, /* R = 0 */
     wxCOMPOSITION_SOURCE, /* R = S */
     wxCOMPOSITION_OVER, /* R = S + D*(1 - Sa) */


@@ -49,7 +65,7 @@ enum wxCompositionMode
     wxCOMPOSITION_XOR, /* R = S*(1 - Da) + D*(1 - Sa) */
 
     // mathematical compositions
     wxCOMPOSITION_XOR, /* R = S*(1 - Da) + D*(1 - Sa) */
 
     // mathematical compositions

-    wxCOMPOSITION_ADD, /* R = S + D */
+    wxCOMPOSITION_ADD /* R = S + D */

 };
 
 class WXDLLIMPEXP_FWD_CORE wxWindowDC;
 };
 
 class WXDLLIMPEXP_FWD_CORE wxWindowDC;


@@ -57,6 +73,11 @@ class WXDLLIMPEXP_FWD_CORE wxMemoryDC;
 #if wxUSE_PRINTING_ARCHITECTURE
 class WXDLLIMPEXP_FWD_CORE wxPrinterDC;
 #endif
 #if wxUSE_PRINTING_ARCHITECTURE
 class WXDLLIMPEXP_FWD_CORE wxPrinterDC;
 #endif

+#ifdef __WXMSW__
+#if wxUSE_ENH_METAFILE
+class WXDLLIMPEXP_FWD_CORE wxEnhMetaFileDC;
+#endif
+#endif

 class WXDLLIMPEXP_FWD_CORE wxGraphicsContext;
 class WXDLLIMPEXP_FWD_CORE wxGraphicsPath;
 class WXDLLIMPEXP_FWD_CORE wxGraphicsMatrix;
 class WXDLLIMPEXP_FWD_CORE wxGraphicsContext;
 class WXDLLIMPEXP_FWD_CORE wxGraphicsPath;
 class WXDLLIMPEXP_FWD_CORE wxGraphicsMatrix;


@@ -304,6 +325,82 @@ private:
 extern WXDLLIMPEXP_DATA_CORE(wxGraphicsPath) wxNullGraphicsPath;
 
 
 extern WXDLLIMPEXP_DATA_CORE(wxGraphicsPath) wxNullGraphicsPath;
 
 

+// Describes a single gradient stop.
+class wxGraphicsGradientStop
+{
+public:
+    wxGraphicsGradientStop(wxColour col = wxTransparentColour,
+                           float pos = 0.)
+        : m_col(col),
+          m_pos(pos)
+    {
+    }
+
+    // default copy ctor, assignment operator and dtor are ok
+
+    const wxColour& GetColour() const { return m_col; }
+    void SetColour(const wxColour& col) { m_col = col; }
+
+    float GetPosition() const { return m_pos; }
+    void SetPosition(float pos)
+    {
+        wxASSERT_MSG( pos >= 0 && pos <= 1, "invalid gradient stop position" );
+
+        m_pos = pos;
+    }
+
+private:
+    // The colour of this gradient band.
+    wxColour m_col;
+
+    // Its starting position: 0 is the beginning and 1 is the end.
+    float m_pos;
+};
+
+// A collection of gradient stops ordered by their positions (from lowest to
+// highest). The first stop (index 0, position 0.0) is always the starting
+// colour and the last one (index GetCount() - 1, position 1.0) is the end
+// colour.
+class WXDLLIMPEXP_CORE wxGraphicsGradientStops
+{
+public:
+    wxGraphicsGradientStops(wxColour startCol = wxTransparentColour,
+                            wxColour endCol = wxTransparentColour)
+    {
+        // we can't use Add() here as it relies on having start/end stops as
+        // first/last array elements so do it manually
+        m_stops.push_back(wxGraphicsGradientStop(startCol, 0.f));
+        m_stops.push_back(wxGraphicsGradientStop(endCol, 1.f));
+    }
+
+    // default copy ctor, assignment operator and dtor are ok for this class
+
+
+    // Add a stop in correct order.
+    void Add(const wxGraphicsGradientStop& stop);
+    void Add(wxColour col, float pos) { Add(wxGraphicsGradientStop(col, pos)); }
+
+    // Get the number of stops.
+    unsigned GetCount() const { return m_stops.size(); }
+
+    // Return the stop at the given index (which must be valid).
+    wxGraphicsGradientStop Item(unsigned n) const { return m_stops.at(n); }
+
+    // Get/set start and end colours.
+    void SetStartColour(wxColour col)
+        { m_stops[0].SetColour(col); }
+    wxColour GetStartColour() const
+        { return m_stops[0].GetColour(); }
+    void SetEndColour(wxColour col)
+        { m_stops[m_stops.size() - 1].SetColour(col); }
+    wxColour GetEndColour() const
+        { return m_stops[m_stops.size() - 1].GetColour(); }
+
+private:
+    // All the stops stored in ascending order of positions.
+    wxVector<wxGraphicsGradientStop> m_stops;
+};
+

 class WXDLLIMPEXP_CORE wxGraphicsContext : public wxGraphicsObject
 {
 public:
 class WXDLLIMPEXP_CORE wxGraphicsContext : public wxGraphicsObject
 {
 public:


@@ -315,6 +412,11 @@ public:
     static wxGraphicsContext * Create( const wxMemoryDC& dc);
 #if wxUSE_PRINTING_ARCHITECTURE
     static wxGraphicsContext * Create( const wxPrinterDC& dc);
     static wxGraphicsContext * Create( const wxMemoryDC& dc);
 #if wxUSE_PRINTING_ARCHITECTURE
     static wxGraphicsContext * Create( const wxPrinterDC& dc);

+#endif
+#ifdef __WXMSW__
+#if wxUSE_ENH_METAFILE
+    static wxGraphicsContext * Create( const wxEnhMetaFileDC& dc);
+#endif

 #endif
 
     static wxGraphicsContext* CreateFromNative( void * context );
 #endif
 
     static wxGraphicsContext* CreateFromNative( void * context );


@@ -348,14 +450,29 @@ public:
 
     virtual wxGraphicsBrush CreateBrush(const wxBrush& brush ) const;
 
 
     virtual wxGraphicsBrush CreateBrush(const wxBrush& brush ) const;
 

-    // sets the brush to a linear gradient, starting at (x1,y1) with color c1 to (x2,y2) with color c2
-    virtual wxGraphicsBrush CreateLinearGradientBrush( wxDouble x1, wxDouble y1, wxDouble x2, wxDouble y2,
-        const wxColour&c1, const wxColour&c2) const;
-
-    // sets the brush to a radial gradient originating at (xo,yc) with color oColor and ends on a circle around (xc,yc)
-    // with radius r and color cColor
-    virtual wxGraphicsBrush CreateRadialGradientBrush( wxDouble xo, wxDouble yo, wxDouble xc, wxDouble yc, wxDouble radius,
-        const wxColour &oColor, const wxColour &cColor) const;
+    // sets the brush to a linear gradient, starting at (x1,y1) and ending at
+    // (x2,y2) with the given boundary colours or the specified stops
+    wxGraphicsBrush
+    CreateLinearGradientBrush(wxDouble x1, wxDouble y1,
+                              wxDouble x2, wxDouble y2,
+                              const wxColour& c1, const wxColour& c2) const;
+    wxGraphicsBrush
+    CreateLinearGradientBrush(wxDouble x1, wxDouble y1,
+                              wxDouble x2, wxDouble y2,
+                              const wxGraphicsGradientStops& stops) const;
+
+    // sets the brush to a radial gradient originating at (xo,yc) and ending
+    // on a circle around (xc,yc) with the given radius; the colours may be
+    // specified by just the two extremes or the full array of gradient stops
+    wxGraphicsBrush
+    CreateRadialGradientBrush(wxDouble xo, wxDouble yo,
+                              wxDouble xc, wxDouble yc, wxDouble radius,
+                              const wxColour& oColor, const wxColour& cColor) const;
+
+    wxGraphicsBrush
+    CreateRadialGradientBrush(wxDouble xo, wxDouble yo,
+                              wxDouble xc, wxDouble yc, wxDouble radius,
+                              const wxGraphicsGradientStops& stops) const;

 
     // sets the font
     virtual wxGraphicsFont CreateFont( const wxFont &font , const wxColour &col = *wxBLACK ) const;
 
     // sets the font
     virtual wxGraphicsFont CreateFont( const wxFont &font , const wxColour &col = *wxBLACK ) const;


@@ -394,6 +511,12 @@ public:
     // sets the antialiasing mode, returns true if it supported
     virtual bool SetAntialiasMode(wxAntialiasMode antialias) = 0;
 
     // sets the antialiasing mode, returns true if it supported
     virtual bool SetAntialiasMode(wxAntialiasMode antialias) = 0;
 

+    // returns the current interpolation quality
+    virtual wxInterpolationQuality GetInterpolationQuality() const { return m_interpolation; }
+    
+    // sets the interpolation quality, returns true if it supported
+    virtual bool SetInterpolationQuality(wxInterpolationQuality interpolation) = 0;
+    

     // returns the current compositing operator
     virtual wxCompositionMode GetCompositionMode() const { return m_composition; }
 
     // returns the current compositing operator
     virtual wxCompositionMode GetCompositionMode() const { return m_composition; }
 


@@ -401,7 +524,13 @@ public:
     virtual bool SetCompositionMode(wxCompositionMode op) = 0;
 
     // returns the size of the graphics context in device coordinates
     virtual bool SetCompositionMode(wxCompositionMode op) = 0;
 
     // returns the size of the graphics context in device coordinates

-    virtual void GetSize( wxDouble* width, wxDouble* height);
+    void GetSize(wxDouble* width, wxDouble* height)
+    {
+        if ( width )
+            *width = m_width;
+        if ( height )
+            *height = m_height;
+    }

 
     // returns the resolution of the graphics context in device points per inch
     virtual void GetDPI( wxDouble* dpiX, wxDouble* dpiY);
 
     // returns the resolution of the graphics context in device points per inch
     virtual void GetDPI( wxDouble* dpiX, wxDouble* dpiY);


@@ -534,14 +663,26 @@ public:
 
     // helper to determine if a 0.5 offset should be applied for the drawing operation
     virtual bool ShouldOffset() const { return false; }
 
     // helper to determine if a 0.5 offset should be applied for the drawing operation
     virtual bool ShouldOffset() const { return false; }

-
+    
+    // indicates whether the context should try to offset for pixel boundaries, this only makes sense on 
+    // bitmap devices like screen, by default this is turned off
+    virtual void EnableOffset(bool enable = true);
+    
+    void DisableOffset() { EnableOffset(false); }
+    bool OffsetEnabled() { return m_enableOffset; }
+    

 protected:
 protected:

+    // These fields must be initialized in the derived class ctors.
+    wxDouble m_width,
+             m_height;

 
     wxGraphicsPen m_pen;
     wxGraphicsBrush m_brush;
     wxGraphicsFont m_font;
     wxAntialiasMode m_antialias;
     wxCompositionMode m_composition;
 
     wxGraphicsPen m_pen;
     wxGraphicsBrush m_brush;
     wxGraphicsFont m_font;
     wxAntialiasMode m_antialias;
     wxCompositionMode m_composition;

+    wxInterpolationQuality m_interpolation;
+    bool m_enableOffset;

 
 protected:
     // implementations of overloaded public functions: we use different names
 
 protected:
     // implementations of overloaded public functions: we use different names


@@ -618,6 +759,11 @@ public:
     virtual wxGraphicsContext * CreateContext( const wxMemoryDC& dc) = 0;
 #if wxUSE_PRINTING_ARCHITECTURE
     virtual wxGraphicsContext * CreateContext( const wxPrinterDC& dc) = 0;
     virtual wxGraphicsContext * CreateContext( const wxMemoryDC& dc) = 0;
 #if wxUSE_PRINTING_ARCHITECTURE
     virtual wxGraphicsContext * CreateContext( const wxPrinterDC& dc) = 0;

+#endif
+#ifdef __WXMSW__
+#if wxUSE_ENH_METAFILE
+    virtual wxGraphicsContext * CreateContext( const wxEnhMetaFileDC& dc) = 0;
+#endif

 #endif
 
     virtual wxGraphicsContext * CreateContextFromNativeContext( void * context ) = 0;
 #endif
 
     virtual wxGraphicsContext * CreateContextFromNativeContext( void * context ) = 0;


@@ -644,21 +790,26 @@ public:
 
     virtual wxGraphicsBrush CreateBrush(const wxBrush& brush ) = 0;
 
 
     virtual wxGraphicsBrush CreateBrush(const wxBrush& brush ) = 0;
 

-    // sets the brush to a linear gradient, starting at (x1,y1) with color c1 to (x2,y2) with color c2
-    virtual wxGraphicsBrush CreateLinearGradientBrush( wxDouble x1, wxDouble y1, wxDouble x2, wxDouble y2,
-        const wxColour&c1, const wxColour&c2) = 0;
+    // Gradient brush creation functions may not honour all the stops specified
+    // stops and use just its boundary colours (this is currently the case
+    // under OS X)
+    virtual wxGraphicsBrush
+    CreateLinearGradientBrush(wxDouble x1, wxDouble y1,
+                              wxDouble x2, wxDouble y2,
+                              const wxGraphicsGradientStops& stops) = 0;

 
 

-    // sets the brush to a radial gradient originating at (xo,yc) with color oColor and ends on a circle around (xc,yc)
-    // with radius r and color cColor
-    virtual wxGraphicsBrush CreateRadialGradientBrush( wxDouble xo, wxDouble yo, wxDouble xc, wxDouble yc, wxDouble radius,
-        const wxColour &oColor, const wxColour &cColor) = 0;
+    virtual wxGraphicsBrush
+    CreateRadialGradientBrush(wxDouble xo, wxDouble yo,
+                              wxDouble xc, wxDouble yc,
+                              wxDouble radius,
+                              const wxGraphicsGradientStops& stops) = 0;

 
 

-   // sets the font
+    // sets the font

     virtual wxGraphicsFont CreateFont( const wxFont &font , const wxColour &col = *wxBLACK ) = 0;
 
     // create a native bitmap representation
     virtual wxGraphicsBitmap CreateBitmap( const wxBitmap &bitmap ) = 0;
     virtual wxGraphicsFont CreateFont( const wxFont &font , const wxColour &col = *wxBLACK ) = 0;
 
     // create a native bitmap representation
     virtual wxGraphicsBitmap CreateBitmap( const wxBitmap &bitmap ) = 0;

-    
+

     // create a graphics bitmap from a native bitmap
     virtual wxGraphicsBitmap CreateBitmapFromNativeBitmap( void* bitmap ) = 0;
 
     // create a graphics bitmap from a native bitmap
     virtual wxGraphicsBitmap CreateBitmapFromNativeBitmap( void* bitmap ) = 0;