1 files changed, 132 insertions, 0 deletions
diff --git a/chromium/third_party/skia/gm/offsetimagefilter.cpp b/chromium/third_party/skia/gm/offsetimagefilter.cpp
new file mode 100644
index 00000000000..ca8a80997e2
--- /dev/null
+++ b/chromium/third_party/skia/gm/offsetimagefilter.cpp
@@ -0,0 +1,132 @@
+/*
+ * Copyright 2013 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 "SkOffsetImageFilter.h"
+#include "SkBitmapSource.h"
+
+#define WIDTH 600
+#define HEIGHT 100
+#define MARGIN 12
+
+namespace skiagm {
+
+class OffsetImageFilterGM : public GM {
+public:
+    OffsetImageFilterGM() : fInitialized(false) {
+        this->setBGColor(0xFF000000);
+    }
+
+protected:
+    virtual SkString onShortName() {
+        return SkString("offsetimagefilter");
+    }
+
+    void make_bitmap() {
+        fBitmap.allocN32Pixels(80, 80);
+        SkCanvas canvas(fBitmap);
+        canvas.clear(0x00000000);
+        SkPaint paint;
+        paint.setAntiAlias(true);
+        paint.setColor(0xD000D000);
+        paint.setTextSize(SkIntToScalar(96));
+        const char* str = "e";
+        canvas.drawText(str, strlen(str), SkIntToScalar(15), SkIntToScalar(65), paint);
+    }
+
+    void make_checkerboard() {
+        fCheckerboard.allocN32Pixels(80, 80);
+        SkCanvas canvas(fCheckerboard);
+        canvas.clear(0x00000000);
+        SkPaint darkPaint;
+        darkPaint.setColor(0xFF404040);
+        SkPaint lightPaint;
+        lightPaint.setColor(0xFFA0A0A0);
+        for (int y = 0; y < 80; y += 16) {
+          for (int x = 0; x < 80; x += 16) {
+            canvas.save();
+            canvas.translate(SkIntToScalar(x), SkIntToScalar(y));
+            canvas.drawRect(SkRect::MakeXYWH(0, 0, 8, 8), darkPaint);
+            canvas.drawRect(SkRect::MakeXYWH(8, 0, 8, 8), lightPaint);
+            canvas.drawRect(SkRect::MakeXYWH(0, 8, 8, 8), lightPaint);
+            canvas.drawRect(SkRect::MakeXYWH(8, 8, 8, 8), darkPaint);
+            canvas.restore();
+          }
+        }
+    }
+
+    virtual SkISize onISize() {
+        return SkISize::Make(WIDTH, HEIGHT);
+    }
+
+    void drawClippedBitmap(SkCanvas* canvas, const SkBitmap& bitmap, const SkPaint& paint, SkScalar scale, const SkIRect& cropRect) {
+        canvas->save();
+        SkRect clipRect = SkRect::MakeWH(
+            SkIntToScalar(bitmap.width()), SkIntToScalar(bitmap.height()));
+        canvas->clipRect(clipRect);
+        canvas->scale(scale, scale);
+        canvas->drawBitmap(bitmap, 0, 0, &paint);
+        canvas->restore();
+        SkPaint strokePaint;
+        strokePaint.setStyle(SkPaint::kStroke_Style);
+        strokePaint.setColor(SK_ColorRED);
+
+        // Draw a boundary rect around the intersection of the clip rect
+        // and crop rect.
+        SkMatrix scaleMatrix;
+        scaleMatrix.setScale(scale, scale);
+        SkRect cropRectFloat;
+        scaleMatrix.mapRect(&cropRectFloat, SkRect::Make(cropRect));
+        clipRect.intersect(cropRectFloat);
+        canvas->drawRect(clipRect, strokePaint);
+    }
+
+    virtual void onDraw(SkCanvas* canvas) {
+        if (!fInitialized) {
+            make_bitmap();
+            make_checkerboard();
+            fInitialized = true;
+        }
+        canvas->clear(0x00000000);
+        SkPaint paint;
+
+        for (int i = 0; i < 4; i++) {
+            SkBitmap* bitmap = (i & 0x01) ? &fCheckerboard : &fBitmap;
+            SkIRect cropRect = SkIRect::MakeXYWH(i * 12,
+                                                 i * 8,
+                                                 bitmap->width() - i * 8,
+                                                 bitmap->height() - i * 12);
+            SkImageFilter::CropRect rect(SkRect::Make(cropRect));
+            SkAutoTUnref<SkImageFilter> tileInput(SkBitmapSource::Create(*bitmap));
+            SkScalar dx = SkIntToScalar(i*5);
+            SkScalar dy = SkIntToScalar(i*10);
+            SkAutoTUnref<SkImageFilter> filter(
+                SkOffsetImageFilter::Create(dx, dy, tileInput, &rect));
+            paint.setImageFilter(filter);
+            drawClippedBitmap(canvas, *bitmap, paint, SK_Scalar1, cropRect);
+            canvas->translate(SkIntToScalar(bitmap->width() + MARGIN), 0);
+        }
+
+        SkIRect cropRect = SkIRect::MakeXYWH(0, 0, 100, 100);
+        SkImageFilter::CropRect rect(SkRect::Make(cropRect));
+        SkAutoTUnref<SkImageFilter> filter(
+            SkOffsetImageFilter::Create(SkIntToScalar(-5), SkIntToScalar(-10), NULL, &rect));
+        paint.setImageFilter(filter);
+        drawClippedBitmap(canvas, fBitmap, paint, SkIntToScalar(2), cropRect);
+    }
+private:
+    typedef GM INHERITED;
+    SkBitmap fBitmap, fCheckerboard;
+    bool fInitialized;
+};
+
+//////////////////////////////////////////////////////////////////////////////
+
+static GM* MyFactory(void*) { return new OffsetImageFilterGM; }
+static GMRegistry reg(MyFactory);
+
+}