add peekPixels to SkCanvas and SkSurface
fix reference to SkBaseDevice, which was only a problem in no-gpu build
This reverts commit 4fa44a6bf73891b21917fb90d02beef9143bffa3.
R=reed@google.com
Author: reed@chromium.org
Review URL: https://codereview.chromium.org/163603003
git-svn-id: http://skia.googlecode.com/svn/trunk@13432 2bbb7eff-a529-9590-31e7-b0007b416f81
diff --git a/gm/peekpixels.cpp b/gm/peekpixels.cpp
new file mode 100644
index 0000000..c6744d3
--- /dev/null
+++ b/gm/peekpixels.cpp
@@ -0,0 +1,78 @@
+/*
+ * Copyright 2011 Google Inc.
+ *
+ * Use of this source code is governed by a BSD-style license that can be
+ * found in the LICENSE file.
+ */
+
+#include "gm.h"
+#include "SkCanvas.h"
+#include "SkPath.h"
+#include "SkSurface.h"
+#include "SkPicture.h"
+
+static void draw_content(SkCanvas* canvas) {
+ SkImageInfo info = canvas->imageInfo();
+ SkPaint paint;
+ paint.setAntiAlias(true);
+ canvas->drawCircle(SkScalarHalf(info.width()), SkScalarHalf(info.height()),
+ SkScalarHalf(info.width()), paint);
+}
+
+class PeekPixelsGM : public skiagm::GM {
+public:
+ PeekPixelsGM() {}
+
+protected:
+ virtual SkString onShortName() SK_OVERRIDE {
+ return SkString("peekpixels");
+ }
+
+ virtual SkISize onISize() SK_OVERRIDE {
+ return SkISize::Make(640, 480);
+ }
+
+ virtual void onDraw(SkCanvas* canvas) SK_OVERRIDE {
+ SkImageInfo info = SkImageInfo::MakeN32Premul(100, 100);
+ SkAutoTUnref<SkSurface> surface(canvas->newSurface(info));
+ if (surface.get()) {
+ SkCanvas* surfCanvas = surface->getCanvas();
+
+ draw_content(surfCanvas);
+ SkBitmap bitmap;
+
+ // test peekPixels
+ {
+ SkImageInfo info;
+ size_t rowBytes;
+ const void* addr = surfCanvas->peekPixels(&info, &rowBytes);
+ if (addr && bitmap.installPixels(info, const_cast<void*>(addr),
+ rowBytes, NULL, NULL)) {
+ canvas->drawBitmap(bitmap, 0, 0, NULL);
+ }
+ }
+
+ // test ROCanvasPixels
+ canvas->translate(120, 0);
+ SkAutoROCanvasPixels ropixels(surfCanvas);
+ if (ropixels.asROBitmap(&bitmap)) {
+ canvas->drawBitmap(bitmap, 0, 0, NULL);
+ }
+
+ // test Surface
+ canvas->translate(120, 0);
+ surface->draw(canvas, 0, 0, NULL);
+ }
+ }
+
+ virtual uint32_t onGetFlags() const {
+ // we explicitly test peekPixels and readPixels, neither of which
+ // return something for a picture-backed canvas, so we skip that test.
+ return kSkipPicture_Flag;
+ }
+
+private:
+ typedef skiagm::GM INHERITED;
+};
+
+DEF_GM( return SkNEW(PeekPixelsGM); )