add blurrect gm
git-svn-id: http://skia.googlecode.com/svn/trunk@6284 2bbb7eff-a529-9590-31e7-b0007b416f81
diff --git a/gm/blurrect.cpp b/gm/blurrect.cpp
new file mode 100644
index 0000000..d6c3e7b
--- /dev/null
+++ b/gm/blurrect.cpp
@@ -0,0 +1,105 @@
+/*
+ * Copyright 2012 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 "SkBlurMaskFilter.h"
+#include "SkCanvas.h"
+#include "SkPath.h"
+
+#define STROKE_WIDTH SkIntToScalar(10)
+
+typedef void (*Proc)(SkCanvas*, const SkRect&, const SkPaint&);
+
+static void fill_rect(SkCanvas* canvas, const SkRect& r, const SkPaint& p) {
+ canvas->drawRect(r, p);
+}
+
+static void stroke_rect(SkCanvas* canvas, const SkRect& r, const SkPaint& p) {
+ SkPaint paint(p);
+ paint.setStyle(SkPaint::kStroke_Style);
+ paint.setStrokeWidth(STROKE_WIDTH);
+ canvas->drawRect(r, paint);
+}
+
+static void draw_donut(SkCanvas* canvas, const SkRect& r, const SkPaint& p) {
+ SkRect rect;
+ SkPath path;
+
+ rect = r;
+ rect.outset(STROKE_WIDTH/2, STROKE_WIDTH/2);
+ path.addRect(rect);
+ rect = r;
+ rect.inset(STROKE_WIDTH/2, STROKE_WIDTH/2);
+ path.addRect(rect);
+ path.setFillType(SkPath::kEvenOdd_FillType);
+
+ canvas->drawPath(path, p);
+}
+
+class BlurRectGM : public skiagm::GM {
+ SkAutoTUnref<SkMaskFilter> fMaskFilter;
+public:
+ BlurRectGM() :
+ fMaskFilter(SkBlurMaskFilter::Create(STROKE_WIDTH/2,
+ SkBlurMaskFilter::kNormal_BlurStyle,
+ SkBlurMaskFilter::kHighQuality_BlurFlag))
+ {}
+
+protected:
+ virtual SkString onShortName() {
+ return SkString("blurrect");
+ }
+
+ virtual SkISize onISize() {
+ return SkISize::Make(640, 480);
+ }
+
+ virtual void onDraw(SkCanvas* canvas) {
+ canvas->translate(STROKE_WIDTH*3/2, STROKE_WIDTH*3/2);
+
+ SkPaint paint;
+ paint.setMaskFilter(fMaskFilter);
+
+ static const Proc procs[] = {
+ fill_rect, stroke_rect, draw_donut
+ };
+
+ SkRect r = { 0, 0, 250, 120 };
+
+ this->drawProcs(canvas, r, paint, false, procs, SK_ARRAY_COUNT(procs));
+ canvas->translate(r.width() * 4/3, 0);
+ this->drawProcs(canvas, r, paint, true, procs, SK_ARRAY_COUNT(procs));
+ }
+
+ virtual uint32_t onGetFlags() const { return kSkipPipe_Flag; }
+
+private:
+ void drawProcs(SkCanvas* canvas, const SkRect& r, const SkPaint& paint,
+ bool doClip, const Proc procs[], size_t procsCount) {
+ SkAutoCanvasRestore acr(canvas, true);
+ for (size_t i = 0; i < procsCount; ++i) {
+ if (doClip) {
+ SkRect clipRect(r);
+ clipRect.inset(STROKE_WIDTH/2, STROKE_WIDTH/2);
+ canvas->save();
+ canvas->clipRect(r);
+ }
+ procs[i](canvas, r, paint);
+ if (doClip) {
+ canvas->restore();
+ }
+ canvas->translate(0, r.height() * 4/3);
+ }
+ }
+
+ typedef GM INHERITED;
+};
+
+//////////////////////////////////////////////////////////////////////////////
+
+DEF_GM(return new BlurRectGM;)
+