#endif
};
+class wxCairoBitmapData : public wxGraphicsObjectRefData
+{
+public:
+ wxCairoBitmapData( wxGraphicsRenderer* renderer, const wxBitmap& bmp );
+ ~wxCairoBitmapData();
+
+ virtual cairo_surface_t* GetCairoSurface() { return m_surface; }
+ virtual cairo_pattern_t* GetCairoPattern() { return m_pattern; }
+ virtual wxSize GetSize() { return wxSize(m_width, m_height); }
+private :
+ cairo_surface_t* m_surface;
+ cairo_pattern_t* m_pattern;
+ int m_width;
+ int m_height;
+ unsigned char* m_buffer;
+};
+
class WXDLLIMPEXP_CORE wxCairoContext : public wxGraphicsContext
{
public:
return (void*) &m_matrix;
}
+// wxCairoBitmap implementation
+//-----------------------------------------------------------------------------
+
+wxCairoBitmapData::wxCairoBitmapData( wxGraphicsRenderer* renderer, const wxBitmap& bmp ) : wxGraphicsObjectRefData( renderer )
+{
+ wxCHECK_RET( bmp.IsOk(), wxT("Invalid bitmap in wxCairoContext::DrawBitmap"));
+
+ cairo_surface_t* surface;
+ int bw = bmp.GetWidth();
+ int bh = bmp.GetHeight();
+ wxBitmap bmpSource = bmp; // we need a non-const instance
+ m_buffer = new unsigned char[bw*bh*4];
+ wxUint32* data = (wxUint32*)buffer;
+
+ // Create a surface object and copy the bitmap pixel data to it. if the
+ // image has alpha (or a mask represented as alpha) then we'll use a
+ // different format and iterator than if it doesn't...
+ if (bmpSource.HasAlpha() || bmpSource.GetMask())
+ {
+ m_surface = cairo_image_surface_create_for_data(
+ m_buffer, CAIRO_FORMAT_ARGB32, bw, bh, bw*4);
+ wxAlphaPixelData pixData(bmpSource, wxPoint(0,0), wxSize(bw, bh));
+ wxCHECK_RET( pixData, wxT("Failed to gain raw access to bitmap data."));
+
+ wxAlphaPixelData::Iterator p(pixData);
+ for (int y=0; y<bh; y++)
+ {
+ wxAlphaPixelData::Iterator rowStart = p;
+ for (int x=0; x<bw; x++)
+ {
+ // Each pixel in CAIRO_FORMAT_ARGB32 is a 32-bit quantity,
+ // with alpha in the upper 8 bits, then red, then green, then
+ // blue. The 32-bit quantities are stored native-endian.
+ // Pre-multiplied alpha is used.
+ unsigned char alpha = p.Alpha();
+ if (alpha == 0)
+ *data = 0;
+ else
+ *data = ( alpha << 24
+ | (p.Red() * alpha/255) << 16
+ | (p.Green() * alpha/255) << 8
+ | (p.Blue() * alpha/255) );
+ ++data;
+ ++p;
+ }
+ p = rowStart;
+ p.OffsetY(pixData, 1);
+ }
+ }
+ else // no alpha
+ {
+ m_surface = cairo_image_surface_create_for_data(
+ m_buffer, CAIRO_FORMAT_RGB24, bw, bh, bw*4);
+ wxNativePixelData pixData(bmpSource, wxPoint(0,0), wxSize(bw, bh));
+ wxCHECK_RET( pixData, wxT("Failed to gain raw access to bitmap data."));
+
+ wxNativePixelData::Iterator p(pixData);
+ for (int y=0; y<bh; y++)
+ {
+ wxNativePixelData::Iterator rowStart = p;
+ for (int x=0; x<bw; x++)
+ {
+ // Each pixel in CAIRO_FORMAT_RGB24 is a 32-bit quantity, with
+ // the upper 8 bits unused. Red, Green, and Blue are stored in
+ // the remaining 24 bits in that order. The 32-bit quantities
+ // are stored native-endian.
+ *data = ( p.Red() << 16 | p.Green() << 8 | p.Blue() );
+ ++data;
+ ++p;
+ }
+ p = rowStart;
+ p.OffsetY(pixData, 1);
+ }
+ }
+}
+
+wxCairoBitmapData::~wxCairoBitmapData()
+{
+ cairo_pattern_destroy(m_pattern);
+ cairo_surface_destroy(m_surface);
+ delete [] m_buffer;
+}
+
+
+
//-----------------------------------------------------------------------------
// wxCairoContext implementation
//-----------------------------------------------------------------------------
void wxCairoContext::DrawBitmap( const wxBitmap &bmp, wxDouble x, wxDouble y, wxDouble w, wxDouble h )
{
- wxCHECK_RET( bmp.IsOk(), wxT("Invalid bitmap in wxCairoContext::DrawBitmap"));
-
- cairo_surface_t* surface;
- int bw = bmp.GetWidth();
- int bh = bmp.GetHeight();
- wxBitmap bmpSource = bmp; // we need a non-const instance
- unsigned char* buffer = new unsigned char[bw*bh*4];
- wxUint32* data = (wxUint32*)buffer;
-
- // Create a surface object and copy the bitmap pixel data to it. if the
- // image has alpha (or a mask represented as alpha) then we'll use a
- // different format and iterator than if it doesn't...
- if (bmpSource.HasAlpha() || bmpSource.GetMask())
- {
- surface = cairo_image_surface_create_for_data(
- buffer, CAIRO_FORMAT_ARGB32, bw, bh, bw*4);
- wxAlphaPixelData pixData(bmpSource, wxPoint(0,0), wxSize(bw, bh));
- wxCHECK_RET( pixData, wxT("Failed to gain raw access to bitmap data."));
-
- wxAlphaPixelData::Iterator p(pixData);
- for (int y=0; y<bh; y++)
- {
- wxAlphaPixelData::Iterator rowStart = p;
- for (int x=0; x<bw; x++)
- {
- // Each pixel in CAIRO_FORMAT_ARGB32 is a 32-bit quantity,
- // with alpha in the upper 8 bits, then red, then green, then
- // blue. The 32-bit quantities are stored native-endian.
- // Pre-multiplied alpha is used.
- unsigned char alpha = p.Alpha();
- if (alpha == 0)
- *data = 0;
- else
- *data = ( alpha << 24
- | (p.Red() * alpha/255) << 16
- | (p.Green() * alpha/255) << 8
- | (p.Blue() * alpha/255) );
- ++data;
- ++p;
- }
- p = rowStart;
- p.OffsetY(pixData, 1);
- }
- }
- else // no alpha
- {
- surface = cairo_image_surface_create_for_data(
- buffer, CAIRO_FORMAT_RGB24, bw, bh, bw*4);
- wxNativePixelData pixData(bmpSource, wxPoint(0,0), wxSize(bw, bh));
- wxCHECK_RET( pixData, wxT("Failed to gain raw access to bitmap data."));
-
- wxNativePixelData::Iterator p(pixData);
- for (int y=0; y<bh; y++)
- {
- wxNativePixelData::Iterator rowStart = p;
- for (int x=0; x<bw; x++)
- {
- // Each pixel in CAIRO_FORMAT_RGB24 is a 32-bit quantity, with
- // the upper 8 bits unused. Red, Green, and Blue are stored in
- // the remaining 24 bits in that order. The 32-bit quantities
- // are stored native-endian.
- *data = ( p.Red() << 16 | p.Green() << 8 | p.Blue() );
- ++data;
- ++p;
- }
- p = rowStart;
- p.OffsetY(pixData, 1);
- }
- }
+ wxGraphicsBitmap bitmap = GetRenderer()->CreateBitmap(bmp);
+ DrawGraphicsBitmapInternal(bitmap, x, y, w, h);
+}
+void wxCairoContext::DrawBitmap(const wxGraphicsBitmap &bmp, wxDouble x, wxDouble y, wxDouble w, wxDouble h )
+{
PushState();
// In case we're scaling the image by using a width and height different
// than the bitmap's size create a pattern transformation on the surface and
// draw the transformed pattern.
- cairo_pattern_t* pattern = cairo_pattern_create_for_surface(surface);
- wxDouble scaleX = w / bw;
- wxDouble scaleY = h / bh;
+ wxCairoBitmapData* data = static_cast<wxCairoBitmapData*>(bmp.GetRefData());
+ cairo_pattern_t* pattern = data->GetCairoPattern();
+ wxSize size = data->GetSize();
+
+ wxDouble scaleX = w / size.GetWidth();
+ wxDouble scaleY = h / size.GetHeight();
cairo_scale(m_context, scaleX, scaleY);
// prepare to draw the image
cairo_translate(m_context, x, y);
cairo_set_source(m_context, pattern);
// use the original size here since the context is scaled already...
- cairo_rectangle(m_context, 0, 0, bw, bh);
+ cairo_rectangle(m_context, 0, 0, size.GetWidth(), size.GetHeight());
// fill the rectangle using the pattern
cairo_fill(m_context);
- // clean up
- cairo_pattern_destroy(pattern);
- cairo_surface_destroy(surface);
- delete [] buffer;
PopState();
}
virtual wxGraphicsFont CreateFont( const wxFont &font , const wxColour &col = *wxBLACK ) ;
// create a native bitmap representation
-#if 0
- virtual wxGraphicsBitmap CreateBitmap( const wxBitmap &bitmap )
- {
- return wxGraphicsBitmap;
- }
+ virtual wxGraphicsBitmap CreateBitmap( const wxBitmap &bitmap );
// create a subimage from a native image representation
- virtual wxGraphicsBitmap CreateSubBitmap( const wxGraphicsBitmap &bitmap, wxDouble x, wxDouble y, wxDouble w, wxDouble h )
- {
- return wxGraphicsBitmap;
- }
-#endif
+ virtual wxGraphicsBitmap CreateSubBitmap( const wxGraphicsBitmap &bitmap, wxDouble x, wxDouble y, wxDouble w, wxDouble h );
private :
DECLARE_DYNAMIC_CLASS_NO_COPY(wxCairoRenderer)
return wxNullGraphicsFont;
}
+wxGraphicsBitmap wxGraphicsRenderer::CreateBitmap( const wxBitmap& bmp )
+{
+ if ( bmp.Ok() )
+ {
+ wxGraphicsBitmap p;
+ p.SetRefData(new wxCairoBitmapData( this , bmp ));
+ return p;
+ }
+ else
+ return wxNullGraphicsBitmap;
+}
+
+wxGraphicsBitmap wxGraphicsRenderer::CreateSubBitmap( const wxGraphicsBitmap &bitmap, wxDouble x, wxDouble y, wxDouble w, wxDouble h )
+{
+ wxFAIL_MSG("wxCairoRenderer::CreateSubBitmap is not implemented.");
+ return wxNullGraphicsBitmap;
+}
+
#endif // wxUSE_GRAPHICS_CONTEXT
projects / wxWidgets.git / commitdiff
