From 5598b63cd2443a608a74a222d0206bb2455383b7 Mon Sep 17 00:00:00 2001
From: fmalita <fmalita@chromium.org>
Date: Tue, 15 Sep 2015 11:26:13 -0700
Subject: Convert unit tests, GMs from SkBitmapSource to SkImagesource

This removes SkBitmapSource clients within Skia.

http://crrev.com/1334173004 does the same for Blink, so we should be
able to remove SkBitmapSource in a follow-up.

R=reed@google.com,robertphillips@google.com,mtklein@google.com

Review URL: https://codereview.chromium.org/1343123002
---
 gm/imagesource2.cpp | 93 +++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 93 insertions(+)
 create mode 100644 gm/imagesource2.cpp

(limited to 'gm/imagesource2.cpp')

diff --git a/gm/imagesource2.cpp b/gm/imagesource2.cpp
new file mode 100644
index 0000000000..7f9c2b5d43
--- /dev/null
+++ b/gm/imagesource2.cpp
@@ -0,0 +1,93 @@
+/*
+ * 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 "gm.h"
+#include "SkImage.h"
+#include "SkImageSource.h"
+#include "SkSurface.h"
+
+namespace skiagm {
+
+// This GM reproduces the issue in crbug.com/472795. The SkImageSource image
+// is shifted for high quality mode between cpu and gpu.
+class ImageSourceGM : public GM {
+public:
+    ImageSourceGM(const char* suffix, SkFilterQuality filter) : fSuffix(suffix), fFilter(filter) {
+        this->setBGColor(0xFFFFFFFF);
+    }
+
+protected:
+    SkString onShortName() override {
+        SkString name("imagesrc2_");
+        name.append(fSuffix);
+        return name;
+    }
+
+    SkISize onISize() override { return SkISize::Make(256, 256); }
+
+    // Create an image with high frequency vertical stripes
+    void onOnceBeforeDraw() override {
+        static const SkPMColor gColors[] = {
+            SK_ColorRED,     SK_ColorGRAY,
+            SK_ColorGREEN,   SK_ColorGRAY,
+            SK_ColorBLUE,    SK_ColorGRAY,
+            SK_ColorCYAN,    SK_ColorGRAY,
+            SK_ColorMAGENTA, SK_ColorGRAY,
+            SK_ColorYELLOW,  SK_ColorGRAY,
+            SK_ColorWHITE,   SK_ColorGRAY,
+        };
+
+        SkAutoTUnref<SkSurface> surface(SkSurface::NewRasterN32Premul(kImageSize, kImageSize));
+        SkCanvas* canvas = surface->getCanvas();
+
+        int curColor = 0;
+
+        for (int x = 0; x < kImageSize; x += 3) {
+            SkRect r = SkRect::MakeXYWH(SkIntToScalar(x), SkIntToScalar(0), 
+                                        SkIntToScalar(3), SkIntToScalar(kImageSize));
+            SkPaint p;
+            p.setColor(gColors[curColor]);
+            canvas->drawRect(r, p);
+
+            curColor = (curColor+1) % SK_ARRAY_COUNT(gColors);
+        }
+
+        fImage.reset(surface->newImageSnapshot());
+    }
+
+    void onDraw(SkCanvas* canvas) override {
+        SkRect srcRect = SkRect::MakeLTRB(0, 0,
+                                          SkIntToScalar(kImageSize), SkIntToScalar(kImageSize));
+        SkRect dstRect = SkRect::MakeLTRB(0.75f, 0.75f, 225.75f, 225.75f);
+
+        SkAutoTUnref<SkImageFilter> filter(
+            SkImageSource::Create(fImage, srcRect, dstRect, fFilter));
+
+        SkPaint p;
+        p.setImageFilter(filter);
+
+        canvas->saveLayer(nullptr, &p);
+        canvas->restore();
+    }
+
+private:
+    static const int kImageSize = 503;
+
+    SkString fSuffix;
+    SkFilterQuality fFilter;
+    SkAutoTUnref<SkImage> fImage;
+
+    typedef GM INHERITED;
+};
+
+//////////////////////////////////////////////////////////////////////////////
+
+DEF_GM(return new ImageSourceGM("none", kNone_SkFilterQuality);)
+DEF_GM(return new ImageSourceGM("low", kLow_SkFilterQuality);)
+DEF_GM(return new ImageSourceGM("med", kMedium_SkFilterQuality);)
+DEF_GM(return new ImageSourceGM("high", kHigh_SkFilterQuality);)
+}
-- 
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