SurfaceImage::SurfaceImage( cinder::Surface ciSurface )
: SurfaceBase( ciSurface.getWidth(), ciSurface.getHeight() )
{
bool needsManualCopy = true;
cairo_format_t format = ( ciSurface.getChannelOrder().hasAlpha() ) ? CAIRO_FORMAT_ARGB32 : CAIRO_FORMAT_RGB24;
bool legalRowBytes = cairo_format_stride_for_width( format, ciSurface.getWidth() ) == ciSurface.getRowBytes();
if( legalRowBytes && ( ciSurface.getChannelOrder() == cinder::SurfaceChannelOrder::BGRA ) ) {
mCairoSurface = cairo_image_surface_create_for_data( const_cast<unsigned char*>( ciSurface.getData() ), CAIRO_FORMAT_ARGB32, ciSurface.getWidth(), ciSurface.getHeight(), ciSurface.getRowBytes() );
needsManualCopy = false;
}
else if( legalRowBytes && ( ciSurface.getChannelOrder() == cinder::SurfaceChannelOrder::BGRX ) ) {
mCairoSurface = cairo_image_surface_create_for_data( const_cast<unsigned char*>( ciSurface.getData() ), CAIRO_FORMAT_RGB24, ciSurface.getWidth(), ciSurface.getHeight(), ciSurface.getRowBytes() );
needsManualCopy = false;
}
else { // we can't natively represent this Surface configuration, so we'll just allocate one and manually copy it
mCairoSurface = cairo_image_surface_create( ciSurface.hasAlpha() ? CAIRO_FORMAT_ARGB32 : CAIRO_FORMAT_RGB24, ciSurface.getWidth(), ciSurface.getHeight() );
}
initCinderSurface( ciSurface.hasAlpha(), cairo_image_surface_get_data( mCairoSurface ), cairo_image_surface_get_stride( mCairoSurface ) );
if( needsManualCopy )
mCinderSurface.copyFrom( ciSurface, ciSurface.getBounds(), Vec2i::zero() );
cairo_surface_mark_dirty( mCairoSurface );
}
SurfaceImage::SurfaceImage( const cinder::Surface &ciSurface )
: SurfaceBase( ciSurface.getWidth(), ciSurface.getHeight() )
{
if( ciSurface.getChannelOrder() == cinder::SurfaceChannelOrder::BGRA ) {
mCairoSurface = cairo_image_surface_create_for_data( const_cast<unsigned char*>( ciSurface.getData() ), CAIRO_FORMAT_ARGB32, ciSurface.getWidth(), ciSurface.getHeight(), ciSurface.getRowBytes() );
}
else if( ciSurface.getChannelOrder() == cinder::SurfaceChannelOrder::BGRX ) {
mCairoSurface = cairo_image_surface_create_for_data( const_cast<unsigned char*>( ciSurface.getData() ), CAIRO_FORMAT_RGB24, ciSurface.getWidth(), ciSurface.getHeight(), ciSurface.getRowBytes() );
}
else
throw;
initCinderSurface( ciSurface.hasAlpha(), cairo_image_surface_get_data( mCairoSurface ), cairo_image_surface_get_stride( mCairoSurface ) );
}