Add SkCanvas::writePixels that takes info+pixels directly
add corresponding methods to device (w/ diff name to avoid colliding with exising virtuals)
BUG=skia:
R=bsalomon@google.com, robertphillips@google.com, junov@google.com, junov@chromium.org
Author: reed@google.com
Review URL: https://codereview.chromium.org/180113010
git-svn-id: http://skia.googlecode.com/svn/trunk@13697 2bbb7eff-a529-9590-31e7-b0007b416f81
diff --git a/tools/sk_tool_utils.cpp b/tools/sk_tool_utils.cpp
new file mode 100644
index 0000000..f5b8b9f
--- /dev/null
+++ b/tools/sk_tool_utils.cpp
@@ -0,0 +1,48 @@
+#include "sk_tool_utils.h"
+
+namespace sk_tool_utils {
+
+void config8888_to_imagetypes(SkCanvas::Config8888 config, SkColorType* ct, SkAlphaType* at) {
+ switch (config) {
+ case SkCanvas::kNative_Premul_Config8888:
+ *ct = kPMColor_SkColorType;
+ *at = kPremul_SkAlphaType;
+ break;
+ case SkCanvas::kNative_Unpremul_Config8888:
+ *ct = kPMColor_SkColorType;
+ *at = kUnpremul_SkAlphaType;
+ break;
+ case SkCanvas::kBGRA_Premul_Config8888:
+ *ct = kBGRA_8888_SkColorType;
+ *at = kPremul_SkAlphaType;
+ break;
+ case SkCanvas::kBGRA_Unpremul_Config8888:
+ *ct = kBGRA_8888_SkColorType;
+ *at = kUnpremul_SkAlphaType;
+ break;
+ case SkCanvas::kRGBA_Premul_Config8888:
+ *ct = kRGBA_8888_SkColorType;
+ *at = kPremul_SkAlphaType;
+ break;
+ case SkCanvas::kRGBA_Unpremul_Config8888:
+ *ct = kRGBA_8888_SkColorType;
+ *at = kUnpremul_SkAlphaType;
+ break;
+ default:
+ SkASSERT(0);
+ }
+}
+
+void write_pixels(SkCanvas* canvas, const SkBitmap& bitmap, int x, int y,
+ SkColorType colorType, SkAlphaType alphaType) {
+ SkBitmap tmp(bitmap);
+ tmp.lockPixels();
+
+ SkImageInfo info = tmp.info();
+ info.fColorType = colorType;
+ info.fAlphaType = alphaType;
+
+ canvas->writePixels(info, tmp.getPixels(), tmp.rowBytes(), x, y);
+}
+
+}