#include "wx/geometry.h"
#include "wx/dynarray.h"
#include "wx/dc.h"
+#include "wx/image.h"
#include "wx/vector.h"
enum wxAntialiasMode
{
wxANTIALIAS_NONE, // should be 0
- 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
// 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_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;
public:
wxGraphicsBitmap() {}
virtual ~wxGraphicsBitmap() {}
+
+ // Convert bitmap to wxImage: this is more efficient than converting to
+ // wxBitmap first and then to wxImage and also works without X server
+ // connection under Unix that wxBitmap requires.
+#if wxUSE_IMAGE
+ wxImage ConvertToImage() const;
+#endif // wxUSE_IMAGE
+
private:
DECLARE_DYNAMIC_CLASS(wxGraphicsBitmap)
};
static wxGraphicsContext* Create( wxWindow* window );
+#if wxUSE_IMAGE
+ // Create a context for drawing onto a wxImage. The image life time must be
+ // greater than that of the context itself as when the context is destroyed
+ // it will copy its contents to the specified image.
+ static wxGraphicsContext* Create(wxImage& image);
+#endif // wxUSE_IMAGE
+
// create a context that can be used for measuring texts only, no drawing allowed
static wxGraphicsContext * Create();
wxDouble xc, wxDouble yc, wxDouble radius,
const wxGraphicsGradientStops& stops) const;
- // sets the font
+ // creates a font
virtual wxGraphicsFont CreateFont( const wxFont &font , const wxColour &col = *wxBLACK ) const;
+ virtual wxGraphicsFont CreateFont(double sizeInPixels,
+ const wxString& facename,
+ int flags = wxFONTFLAG_DEFAULT,
+ const wxColour& col = *wxBLACK) const;
// create a native bitmap representation
virtual wxGraphicsBitmap CreateBitmap( const wxBitmap &bitmap ) const;
+#if wxUSE_IMAGE
+ wxGraphicsBitmap CreateBitmapFromImage(const wxImage& image) const;
+#endif // wxUSE_IMAGE
// create a native bitmap representation
virtual wxGraphicsBitmap CreateSubBitmap( const wxGraphicsBitmap &bitmap, wxDouble x, wxDouble y, wxDouble w, wxDouble h ) const;
// 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; }
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);
// 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:
+ // 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;
+ wxInterpolationQuality m_interpolation;
+ bool m_enableOffset;
protected:
// implementations of overloaded public functions: we use different names
virtual wxGraphicsContext * CreateContext( wxWindow* window ) = 0;
+#if wxUSE_IMAGE
+ virtual wxGraphicsContext * CreateContextFromImage(wxImage& image) = 0;
+#endif // wxUSE_IMAGE
+
// create a context that can be used for measuring texts only, no drawing allowed
virtual wxGraphicsContext * CreateMeasuringContext() = 0;
// sets the font
virtual wxGraphicsFont CreateFont( const wxFont &font , const wxColour &col = *wxBLACK ) = 0;
+ virtual wxGraphicsFont CreateFont(double sizeInPixels,
+ const wxString& facename,
+ int flags = wxFONTFLAG_DEFAULT,
+ const wxColour& col = *wxBLACK) = 0;
// create a native bitmap representation
virtual wxGraphicsBitmap CreateBitmap( const wxBitmap &bitmap ) = 0;
+#if wxUSE_IMAGE
+ virtual wxGraphicsBitmap CreateBitmapFromImage(const wxImage& image) = 0;
+ virtual wxImage CreateImageFromBitmap(const wxGraphicsBitmap& bmp) = 0;
+#endif // wxUSE_IMAGE
// create a graphics bitmap from a native bitmap
virtual wxGraphicsBitmap CreateBitmapFromNativeBitmap( void* bitmap ) = 0;
DECLARE_ABSTRACT_CLASS(wxGraphicsRenderer)
};
-#endif
+
+#if wxUSE_IMAGE
+inline
+wxImage wxGraphicsBitmap::ConvertToImage() const
+{
+ wxGraphicsRenderer* renderer = GetRenderer();
+ return renderer ? renderer->CreateImageFromBitmap(*this) : wxNullImage;
+}
+#endif // wxUSE_IMAGE
+
+#endif // wxUSE_GRAPHICS_CONTEXT
#endif // _WX_GRAPHICS_H_
projects / wxWidgets.git / blobdiff