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// Copyright 2012 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "config.h"
#include "cc/test/layer_test_common.h"
#include "cc/draw_quad.h"
#include "cc/math_util.h"
#include "testing/gtest/include/gtest/gtest.h"
namespace LayerTestCommon {
// Align with expected and actual output
const char* quadString = " Quad: ";
bool floatRectCanBeSafelyRoundedToIntRect(const cc::FloatRect& r)
{
// Ensure that range of float values is not beyond integer range.
if (!r.isExpressibleAsIntRect())
return false;
// Ensure that the values are actually integers.
if (floorf(r.x()) == r.x()
&& floorf(r.y()) == r.y()
&& floorf(r.width()) == r.width()
&& floorf(r.height()) == r.height())
return true;
return false;
}
void verifyQuadsExactlyCoverRect(const cc::QuadList& quads,
const cc::IntRect& rect) {
cc::Region remaining(rect);
for (size_t i = 0; i < quads.size(); ++i) {
cc::DrawQuad* quad = quads[i];
cc::FloatRect floatQuadRect = cc::MathUtil::mapClippedRect(quad->sharedQuadState()->quadTransform, cc::FloatRect(quad->quadRect()));
// Before testing for exact coverage in the integer world, assert that rounding
// will not round the rect incorrectly.
ASSERT_TRUE(floatRectCanBeSafelyRoundedToIntRect(floatQuadRect));
cc::IntRect quadRect = enclosingIntRect(floatQuadRect);
EXPECT_TRUE(rect.contains(quadRect)) << quadString << i;
EXPECT_TRUE(remaining.contains(quadRect)) << quadString << i;
remaining.subtract(cc::Region(quadRect));
}
EXPECT_TRUE(remaining.isEmpty());
}
} // namespace LayerTestCommon
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