[[ RefactorGraphics ]] add MCGImageCreateWithRasterNoCopy function to libgraphics

livecodeian · livecodeian · commit 7bd871f5f8c7 · 2013-06-25T16:08:28.000+01:00
diff --git a/libgraphics/include/graphics.h b/libgraphics/include/graphics.h
@@ -175,8 +175,15 @@ inline MCGPoint MCGPointMake(MCGFloat p_x, MCGFloat p_y)
 
 ////////////////////////////////////////////////////////////////////////////////
 
+// Create new image with pixel data copied from raster
 bool MCGImageCreateWithRaster(const MCGRaster& raster, MCGImageRef& r_image);
+
+// Create new image with pixel data provided by raster - raster retains ownership of pixel data
+bool MCGImageCreateWithRasterNoCopy(const MCGRaster &raster, MCGImageRef &r_image);
+
+// Create new image with pixel data provided by raster - new image takes ownership of pixel data
 bool MCGImageCreateWithRasterAndRelease(const MCGRaster &raster, MCGImageRef &r_image);
+
 bool MCGImageCreateWithData(const void *bytes, uindex_t byte_count, MCGImageRef& r_image);
 bool MCGImageCreateWithFilename(const char *filename, MCGImageRef& r_image);
 
diff --git a/libgraphics/src/image.cpp b/libgraphics/src/image.cpp
@@ -55,6 +55,11 @@ bool MCGImageCreateWithRasterAndRelease(const MCGRaster &p_raster, MCGImageRef &
 	return __MCGImageCreateWithRaster(p_raster, r_image, kMCGPixelOwnershipTypeTake);
 }
 
+bool MCGImageCreateWithRasterNoCopy(const MCGRaster& p_raster, MCGImageRef& r_image)
+{
+	return __MCGImageCreateWithRaster(p_raster, r_image, kMCGPixelOwnershipTypeBorrow);
+}
+
 bool MCGImageCreateWithRaster(const MCGRaster& p_raster, MCGImageRef& r_image)
 {
 	return __MCGImageCreateWithRaster(p_raster, r_image, kMCGPixelOwnershipTypeCopy);

Original file line number	Diff line number	Diff line change
`@@ -55,6 +55,11 @@ bool MCGImageCreateWithRasterAndRelease(const MCGRaster &p_raster, MCGImageRef &`
`55`	`55`	`return __MCGImageCreateWithRaster(p_raster, r_image, kMCGPixelOwnershipTypeTake);`
`56`	`56`	`}`
`57`	`57`
	`58`	`+bool MCGImageCreateWithRasterNoCopy(const MCGRaster& p_raster, MCGImageRef& r_image)`
	`59`	`+{`
	`60`	`+ return __MCGImageCreateWithRaster(p_raster, r_image, kMCGPixelOwnershipTypeBorrow);`
	`61`	`+}`
	`62`	`+`
`58`	`63`	`bool MCGImageCreateWithRaster(const MCGRaster& p_raster, MCGImageRef& r_image)`
`59`	`64`	`{`
`60`	`65`	`return __MCGImageCreateWithRaster(p_raster, r_image, kMCGPixelOwnershipTypeCopy);`