1 files changed, 119 insertions, 0 deletions
diff --git a/chromium/third_party/skia/gm/matrixconvolution.cpp b/chromium/third_party/skia/gm/matrixconvolution.cpp
new file mode 100644
index 00000000000..592489c6e85
--- /dev/null
+++ b/chromium/third_party/skia/gm/matrixconvolution.cpp
@@ -0,0 +1,119 @@
+/*
+ * 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 "SkColor.h"
+#include "SkMatrixConvolutionImageFilter.h"
+#include "SkGradientShader.h"
+
+namespace skiagm {
+
+class MatrixConvolutionGM : public GM {
+public:
+    MatrixConvolutionGM() : fInitialized(false) {
+        this->setBGColor(0x00000000);
+    }
+
+protected:
+    virtual uint32_t onGetFlags() const SK_OVERRIDE {
+        return kSkipTiled_Flag;
+    }
+
+    virtual SkString onShortName() {
+        return SkString("matrixconvolution");
+    }
+
+    void make_bitmap() {
+        fBitmap.allocN32Pixels(80, 80);
+        SkCanvas canvas(fBitmap);
+        canvas.clear(0x00000000);
+        SkPaint paint;
+        paint.setAntiAlias(true);
+        paint.setColor(0xFFFFFFFF);
+        paint.setTextSize(SkIntToScalar(180));
+        SkPoint pts[2] = { SkPoint::Make(0, 0),
+                           SkPoint::Make(0, SkIntToScalar(80)) };
+        SkColor colors[2] = { 0xFFFFFFFF, 0x40404040 };
+        SkScalar pos[2] = { 0, SkIntToScalar(80) };
+        paint.setShader(SkGradientShader::CreateLinear(
+            pts, colors, pos, 2, SkShader::kClamp_TileMode))->unref();
+        const char* str = "e";
+        canvas.drawText(str, strlen(str), SkIntToScalar(-10), SkIntToScalar(80), paint);
+    }
+
+    virtual SkISize onISize() {
+        return SkISize::Make(500, 300);
+    }
+
+    void draw(SkCanvas* canvas, int x, int y, const SkIPoint& kernelOffset,
+              SkMatrixConvolutionImageFilter::TileMode tileMode, bool convolveAlpha,
+              const SkImageFilter::CropRect* cropRect = NULL) {
+        SkScalar kernel[9] = {
+            SkIntToScalar( 1), SkIntToScalar( 1), SkIntToScalar( 1),
+            SkIntToScalar( 1), SkIntToScalar(-7), SkIntToScalar( 1),
+            SkIntToScalar( 1), SkIntToScalar( 1), SkIntToScalar( 1),
+        };
+        SkISize kernelSize = SkISize::Make(3, 3);
+        SkScalar gain = 0.3f, bias = SkIntToScalar(100);
+        SkPaint paint;
+        SkAutoTUnref<SkImageFilter> filter(
+            SkMatrixConvolutionImageFilter::Create(kernelSize,
+                                                   kernel,
+                                                   gain,
+                                                   bias,
+                                                   kernelOffset,
+                                                   tileMode,
+                                                   convolveAlpha,
+                                                   NULL,
+                                                   cropRect));
+        paint.setImageFilter(filter);
+        canvas->save();
+        canvas->translate(SkIntToScalar(x), SkIntToScalar(y));
+        canvas->clipRect(SkRect::MakeWH(SkIntToScalar(fBitmap.width()),
+                                        SkIntToScalar(fBitmap.height())));
+        canvas->drawBitmap(fBitmap, 0, 0, &paint);
+        canvas->restore();
+    }
+
+    typedef SkMatrixConvolutionImageFilter MCIF;
+
+    virtual void onDraw(SkCanvas* canvas) {
+        if (!fInitialized) {
+            make_bitmap();
+            fInitialized = true;
+        }
+        canvas->clear(0x00000000);
+        SkIPoint kernelOffset = SkIPoint::Make(1, 0);
+        for (int x = 10; x < 310; x += 100) {
+            this->draw(canvas, x, 10, kernelOffset, MCIF::kClamp_TileMode, true);
+            this->draw(canvas, x, 110, kernelOffset, MCIF::kClampToBlack_TileMode, true);
+            this->draw(canvas, x, 210, kernelOffset, MCIF::kRepeat_TileMode, true);
+            kernelOffset.fY++;
+        }
+        kernelOffset.fY = 1;
+        SkImageFilter::CropRect rect(SkRect::MakeXYWH(10, 5, 60, 60));
+        this->draw(canvas, 310, 10, kernelOffset, MCIF::kClamp_TileMode, true, &rect);
+        this->draw(canvas, 310, 110, kernelOffset, MCIF::kClampToBlack_TileMode, true, &rect);
+        this->draw(canvas, 310, 210, kernelOffset, MCIF::kRepeat_TileMode, true, &rect);
+
+        this->draw(canvas, 410, 10, kernelOffset, MCIF::kClamp_TileMode, false);
+        this->draw(canvas, 410, 110, kernelOffset, MCIF::kClampToBlack_TileMode, false);
+        this->draw(canvas, 410, 210, kernelOffset, MCIF::kRepeat_TileMode, false);
+    }
+
+private:
+    typedef GM INHERITED;
+    SkBitmap fBitmap;
+    bool fInitialized;
+};
+
+//////////////////////////////////////////////////////////////////////////////
+
+static GM* MyFactory(void*) { return new MatrixConvolutionGM; }
+static GMRegistry reg(MyFactory);
+
+}