Add an alternate paintContents method to WebContentLayerClient.

Source/platform/graphics/OpaqueRectTrackingContentLayerDelegateTest.cpp

-/*
- * Copyright (C) 2012 Google Inc. All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1.  Redistributions of source code must retain the above copyright
- *     notice, this list of conditions and the following disclaimer.
- * 2.  Redistributions in binary form must reproduce the above copyright
- *     notice, this list of conditions and the following disclaimer in the
- *     documentation and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS'' AND ANY
- * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
- * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- * DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS BE LIABLE FOR ANY
- * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
- * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
- * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
- * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
- * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
- * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#include "config.h"
-
-#include "platform/graphics/OpaqueRectTrackingContentLayerDelegate.h"
-
-#include "platform/geometry/IntRect.h"
-#include "platform/graphics/Color.h"
-#include "platform/graphics/GraphicsContext.h"
-#include "public/platform/WebFloatRect.h"
-#include "public/platform/WebRect.h"
-#include "skia/ext/platform_canvas.h"
-
-#include <gtest/gtest.h>
-
-using namespace blink;
-
-namespace {
-
-struct PaintCallback {
-    virtual void operator()(GraphicsContext&, const IntRect&) = 0;
-};
-
-class TestLayerPainterChromium : public GraphicsContextPainter {
-public:
-    TestLayerPainterChromium(PaintCallback& callback) : m_callback(callback) { }
-
-    virtual void paint(GraphicsContext& context, const IntRect& contentRect) OVERRIDE
-    {
-        m_callback(context, contentRect);
-    }
-
-private:
-    PaintCallback& m_callback;
-};
-
-// Paint callback functions
-
-struct PaintFillOpaque : public PaintCallback {
-    virtual void operator()(GraphicsContext& context, const IntRect& contentRect) OVERRIDE
-    {
-        Color opaque(255, 0, 0, 255);
-        IntRect top(contentRect.x(), contentRect.y(), contentRect.width(), contentRect.height() / 2);
-        IntRect bottom(contentRect.x(), contentRect.y() + contentRect.height() / 2, contentRect.width(), contentRect.height() / 2);
-        context.fillRect(top, opaque);
-        context.fillRect(bottom, opaque);
-    }
-};
-
-struct PaintFillAlpha : public PaintCallback {
-    virtual void operator()(GraphicsContext& context, const IntRect& contentRect)
-    {
-        Color alpha(0, 0, 0, 0);
-        context.fillRect(contentRect, alpha);
-    }
-};
-
-struct PaintFillPartialOpaque : public PaintCallback {
-    PaintFillPartialOpaque(IntRect opaqueRect)
-        : m_opaqueRect(opaqueRect)
-    {
-    }
-
-    virtual void operator()(GraphicsContext& context, const IntRect& contentRect)
-    {
-        Color alpha(0, 0, 0, 0);
-        context.fillRect(contentRect, alpha);
-
-        IntRect fillOpaque = m_opaqueRect;
-        fillOpaque.intersect(contentRect);
-
-        Color opaque(255, 255, 255, 255);
-        context.fillRect(fillOpaque, opaque);
-    }
-
-    IntRect m_opaqueRect;
-};
-
-#define EXPECT_EQ_RECT(a, b) \
-    EXPECT_EQ(a.x, b.x); \
-    EXPECT_EQ(a.width, b.width); \
-    EXPECT_EQ(a.y, b.y); \
-    EXPECT_EQ(a.height, b.height);
-
-class OpaqueRectTrackingContentLayerDelegateTest : public testing::Test {
-public:
-    OpaqueRectTrackingContentLayerDelegateTest()
-        : m_skCanvas(adoptPtr(skia::CreateBitmapCanvas(canvasRect().width, canvasRect().height, false)))
-    {
-    }
-
-    SkCanvas* skCanvas() { return m_skCanvas.get(); }
-    WebRect canvasRect() { return WebRect(0, 0, 400, 400); }
-
-private:
-    OwnPtr<SkCanvas> m_skCanvas;
-};
-
-TEST_F(OpaqueRectTrackingContentLayerDelegateTest, testOpaqueRectPresentAfterOpaquePaint)
-{
-    PaintFillOpaque fillOpaque;
-    TestLayerPainterChromium painter(fillOpaque);
-
-    OpaqueRectTrackingContentLayerDelegate delegate(&painter);
-
-    WebFloatRect opaqueRect;
-    delegate.paintContents(skCanvas(), canvasRect(), false, opaqueRect);
-    EXPECT_EQ_RECT(WebFloatRect(0, 0, 400, 400), opaqueRect);
-}
-
-TEST_F(OpaqueRectTrackingContentLayerDelegateTest, testOpaqueRectNotPresentAfterNonOpaquePaint)
-{
-    PaintFillAlpha fillAlpha;
-    TestLayerPainterChromium painter(fillAlpha);
-    OpaqueRectTrackingContentLayerDelegate delegate(&painter);
-
-    WebFloatRect opaqueRect;
-    delegate.paintContents(skCanvas(), canvasRect(), false, opaqueRect);
-    EXPECT_EQ_RECT(WebFloatRect(0, 0, 0, 0), opaqueRect);
-}
-
-TEST_F(OpaqueRectTrackingContentLayerDelegateTest, testOpaqueRectNotPresentForOpaqueLayerWithOpaquePaint)
-{
-    PaintFillOpaque fillOpaque;
-    TestLayerPainterChromium painter(fillOpaque);
-    OpaqueRectTrackingContentLayerDelegate delegate(&painter);
-
-    delegate.setOpaque(true);
-
-    WebFloatRect opaqueRect;
-    delegate.paintContents(skCanvas(), canvasRect(), false, opaqueRect);
-    EXPECT_EQ_RECT(WebFloatRect(0, 0, 0, 0), opaqueRect);
-}
-
-TEST_F(OpaqueRectTrackingContentLayerDelegateTest, testOpaqueRectNotPresentForOpaqueLayerWithNonOpaquePaint)
-{
-    PaintFillOpaque fillAlpha;
-    TestLayerPainterChromium painter(fillAlpha);
-    OpaqueRectTrackingContentLayerDelegate delegate(&painter);
-
-    delegate.setOpaque(true);
-
-    WebFloatRect opaqueRect;
-    delegate.paintContents(skCanvas(), canvasRect(), false, opaqueRect);
-    EXPECT_EQ_RECT(WebFloatRect(0, 0, 0, 0), opaqueRect);
-}
-
-TEST_F(OpaqueRectTrackingContentLayerDelegateTest, testPartialOpaqueRectNoTransform)
-{
-    IntRect partialRect(100, 200, 50, 75);
-    PaintFillPartialOpaque fillPartial(partialRect);
-    TestLayerPainterChromium painter(fillPartial);
-    OpaqueRectTrackingContentLayerDelegate delegate(&painter);
-
-    WebFloatRect opaqueRect;
-    delegate.paintContents(skCanvas(), canvasRect(), false, opaqueRect);
-    EXPECT_EQ_RECT(WebFloatRect(partialRect.x(), partialRect.y(), partialRect.width(), partialRect.height()), opaqueRect);
-}
-
-TEST_F(OpaqueRectTrackingContentLayerDelegateTest, testPartialOpaqueRectTranslation)
-{
-    IntRect partialRect(100, 200, 50, 75);
-    PaintFillPartialOpaque fillPartial(partialRect);
-    TestLayerPainterChromium painter(fillPartial);
-    OpaqueRectTrackingContentLayerDelegate delegate(&painter);
-
-    WebFloatRect opaqueRect;
-    WebRect contentRect(11, 12, 389, 388);
-    delegate.paintContents(skCanvas(), contentRect, false, opaqueRect);
-    EXPECT_EQ_RECT(WebFloatRect(partialRect.x(), partialRect.y(), partialRect.width(), partialRect.height()), opaqueRect);
-}
-
-} // namespace