Add bigtileimagefilter GM & improvements to toString
This is all the ancillary code from https://codereview.chromium.org/1152553006/ (Fix dst bound reported by SkTileImageFilter).
TBR=reed@google.com, senorblanco@google.com
Review URL: https://codereview.chromium.org/1169713003
diff --git a/gm/bigtileimagefilter.cpp b/gm/bigtileimagefilter.cpp
new file mode 100644
index 0000000..97de0d2
--- /dev/null
+++ b/gm/bigtileimagefilter.cpp
@@ -0,0 +1,76 @@
+/*
+ * Copyright 2015 Google Inc.
+ *
+ * Use of this source code is governed by a BSD-style license that can be
+ * found in the LICENSE file.
+ */
+
+#include "SkBitmapSource.h"
+#include "SkTileImageFilter.h"
+#include "gm.h"
+
+namespace skiagm {
+
+class BigTileImageFilterGM : public GM {
+public:
+ BigTileImageFilterGM() {
+ this->setBGColor(0xFF000000);
+ }
+
+protected:
+
+ SkString onShortName() override {
+ return SkString("bigtileimagefilter");
+ }
+
+ SkISize onISize() override{
+ return SkISize::Make(kWidth, kHeight);
+ }
+
+ void onOnceBeforeDraw() override {
+ fBitmap.allocN32Pixels(kBitmapSize, kBitmapSize);
+
+ SkCanvas canvas(fBitmap);
+ canvas.clear(0xFF000000);
+
+ SkPaint paint;
+ paint.setColor(SK_ColorRED);
+ paint.setStrokeWidth(3);
+ paint.setStyle(SkPaint::kStroke_Style);
+
+ canvas.drawCircle(SkScalarHalf(kBitmapSize), SkScalarHalf(kBitmapSize),
+ SkScalarHalf(kBitmapSize), paint);
+ }
+
+ void onDraw(SkCanvas* canvas) override {
+ canvas->clear(SK_ColorBLACK);
+
+ SkPaint p;
+
+ SkAutoTUnref<SkBitmapSource> bms(SkBitmapSource::Create(fBitmap));
+ SkAutoTUnref<SkTileImageFilter> tif(SkTileImageFilter::Create(
+ SkRect::MakeWH(SkIntToScalar(kBitmapSize), SkIntToScalar(kBitmapSize)),
+ SkRect::MakeWH(SkIntToScalar(kWidth), SkIntToScalar(kHeight)),
+ bms));
+ p.setImageFilter(tif);
+
+ SkRect bound = SkRect::MakeWH(SkIntToScalar(kWidth), SkIntToScalar(kHeight));
+ canvas->saveLayer(&bound, &p);
+ canvas->restore();
+ }
+
+private:
+ static const int kWidth = 512;
+ static const int kHeight = 512;
+ static const int kBitmapSize = 64;
+
+ SkBitmap fBitmap;
+
+ typedef GM INHERITED;
+};
+
+//////////////////////////////////////////////////////////////////////////////
+
+DEF_GM( return SkNEW(BigTileImageFilterGM); )
+
+}