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// Copyright 2017 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "ui/views/paint_info.h"
#include <memory>
#include <vector>
#include "base/memory/ref_counted.h"
#include "cc/base/region.h"
#include "testing/gtest/include/gtest/gtest.h"
#include "ui/compositor/compositor_switches.h"
#include "ui/compositor/paint_context.h"
#include "ui/gfx/geometry/rect.h"
#include "ui/gfx/geometry/size.h"
namespace views {
namespace {
using PaintInfos = std::vector<std::unique_ptr<PaintInfo>>;
// Device scale factors
constexpr float DSF100 = 1.f;
constexpr float DSF125 = 1.25f;
constexpr float DSF150 = 1.5f;
constexpr float DSF160 = 1.6f;
constexpr float DSF166 = 1.66f;
const std::vector<float> kDsfList = {DSF100, DSF125, DSF150, DSF160, DSF166};
constexpr gfx::Size kLayerSize(123, 456);
// ___________
// | 1 |
// |___________|
// | 3 | 4 | 5 | <-- 2 (encapsulates 3, 4 and 5)
// |___|___|___|
// | 7 | 8 | <-- 6 (encapsulates 7 and 8)
// |_______|___|
//
// |r_0| encapsulates 1, 2 and 6.
const gfx::Rect r_0(kLayerSize);
constexpr gfx::Rect r_1(0, 0, 123, 152);
constexpr gfx::Rect r_2(0, 152, 123, 152);
constexpr gfx::Rect r_3(0, 0, 41, 152);
constexpr gfx::Rect r_4(41, 0, 41, 152);
constexpr gfx::Rect r_5(82, 0, 41, 152);
constexpr gfx::Rect r_6(0, 304, 123, 152);
constexpr gfx::Rect r_7(0, 0, 82, 152);
constexpr gfx::Rect r_8(82, 0, 41, 152);
// Verifies that the child recording bounds completely cover the parent
// recording bounds.
void VerifyChildBoundsCoversParent(const PaintInfo* parent_paint_info,
const std::vector<PaintInfo*>& info_list) {
cc::Region remaining(gfx::Rect(parent_paint_info->paint_recording_size()));
int times_empty = 0;
for (auto* const paint_info : info_list) {
const gfx::Rect& child_recording_bounds =
paint_info->paint_recording_bounds() -
parent_paint_info->paint_recording_bounds().OffsetFromOrigin();
EXPECT_TRUE(remaining.Contains(child_recording_bounds))
<< "Remaining: " << remaining.ToString()
<< " paint recording bounds: " << child_recording_bounds.ToString();
remaining.Subtract(child_recording_bounds);
times_empty += remaining.IsEmpty();
}
EXPECT_EQ(times_empty, 1);
}
void VerifyPixelCanvasCornerScaling(const PaintInfos& info_list) {
// child 1, child 2 and child 6 should completely cover child 0.
std::vector<PaintInfo*> child_info_list;
child_info_list.push_back(info_list[1].get());
child_info_list.push_back(info_list[2].get());
child_info_list.push_back(info_list[6].get());
VerifyChildBoundsCoversParent(info_list[0].get(), child_info_list);
child_info_list.clear();
// Child 3,4 and 5 should completely cover child 2.
child_info_list.push_back(info_list[3].get());
child_info_list.push_back(info_list[4].get());
child_info_list.push_back(info_list[5].get());
VerifyChildBoundsCoversParent(info_list[2].get(), child_info_list);
child_info_list.clear();
// Child 7 and 8 should completely cover child 6.
child_info_list.push_back(info_list[7].get());
child_info_list.push_back(info_list[8].get());
VerifyChildBoundsCoversParent(info_list[6].get(), child_info_list);
child_info_list.clear();
}
void VerifyPixelSizesAreSameAsDIPSize(const PaintInfos& info_list) {
EXPECT_EQ(info_list[0]->paint_recording_size(), r_0.size());
EXPECT_EQ(info_list[1]->paint_recording_size(), r_1.size());
EXPECT_EQ(info_list[2]->paint_recording_size(), r_2.size());
EXPECT_EQ(info_list[3]->paint_recording_size(), r_3.size());
EXPECT_EQ(info_list[4]->paint_recording_size(), r_4.size());
EXPECT_EQ(info_list[5]->paint_recording_size(), r_5.size());
EXPECT_EQ(info_list[6]->paint_recording_size(), r_6.size());
EXPECT_EQ(info_list[7]->paint_recording_size(), r_7.size());
EXPECT_EQ(info_list[8]->paint_recording_size(), r_8.size());
}
} // namespace
class PaintInfoTest : public ::testing::Test {
public:
PaintInfoTest() = default;
~PaintInfoTest() override = default;
// ___________
// | 1 |
// |___________|
// | 3 | 4 | 5 | <-- 2 (encapsulates 3, 4 and 5)
// |___|___|___|
// | 7 | 8 | <-- 6 (encapsulates 7 and 8)
// |_______|___|
//
// |r_0| encapsulates 1, 2 and 6.
//
// Returns the following arrangement of paint recording bounds for the given
// |dsf|
PaintInfos GetPaintInfoSetup(const ui::PaintContext& context) {
PaintInfos info_list(9);
info_list[0].reset(new PaintInfo(context, kLayerSize));
info_list[1].reset(
new PaintInfo(*info_list[0], r_1, r_0.size(),
PaintInfo::ScaleType::kScaleWithEdgeSnapping, false));
info_list[2].reset(
new PaintInfo(*info_list[0], r_2, r_0.size(),
PaintInfo::ScaleType::kScaleWithEdgeSnapping, false));
info_list[3].reset(
new PaintInfo(*info_list[2], r_3, r_2.size(),
PaintInfo::ScaleType::kScaleWithEdgeSnapping, false));
info_list[4].reset(
new PaintInfo(*info_list[2], r_4, r_2.size(),
PaintInfo::ScaleType::kScaleWithEdgeSnapping, false));
info_list[5].reset(
new PaintInfo(*info_list[2], r_5, r_2.size(),
PaintInfo::ScaleType::kScaleWithEdgeSnapping, false));
info_list[6].reset(
new PaintInfo(*info_list[0], r_6, r_0.size(),
PaintInfo::ScaleType::kScaleWithEdgeSnapping, false));
info_list[7].reset(
new PaintInfo(*info_list[6], r_7, r_6.size(),
PaintInfo::ScaleType::kScaleWithEdgeSnapping, false));
info_list[8].reset(
new PaintInfo(*info_list[6], r_8, r_6.size(),
PaintInfo::ScaleType::kScaleWithEdgeSnapping, false));
return info_list;
}
void VerifyInvalidationRects(float dsf, bool pixel_canvas_enabled) {
std::vector<gfx::Rect> invalidation_rects = {
gfx::Rect(0, 0, 123, 41), // Intersects with 0 & 1.
gfx::Rect(0, 76, 60, 152), // Intersects 0, 1, 2, 3 & 4.
gfx::Rect(41, 152, 41, 152), // Intersects with 0, 2 & 4.
gfx::Rect(80, 320, 4, 4), // Intersects with 0, 6, 7 & 8.
gfx::Rect(40, 151, 43, 154), // Intersects all
gfx::Rect(82, 304, 1, 1), // Intersects with 0, 6 & 8.
gfx::Rect(81, 303, 2, 2) // Intersects with 0, 2, 4, 5, 6, 7, 8
};
std::vector<std::vector<int>> repaint_indices = {
std::vector<int>{0, 1},
std::vector<int>{0, 1, 2, 3, 4},
std::vector<int>{0, 2, 4},
std::vector<int>{0, 6, 7, 8},
std::vector<int>{0, 1, 2, 3, 4, 5, 6, 7, 8},
std::vector<int>{0, 6, 8},
std::vector<int>{0, 2, 4, 5, 6, 7, 8}};
PaintInfos info_list;
EXPECT_EQ(repaint_indices.size(), invalidation_rects.size());
for (size_t i = 0; i < invalidation_rects.size(); i++) {
ui::PaintContext context(nullptr, dsf, invalidation_rects[i],
pixel_canvas_enabled);
info_list = GetPaintInfoSetup(context);
for (int repaint_index : repaint_indices[i]) {
EXPECT_TRUE(info_list[repaint_index]->context().IsRectInvalid(
gfx::Rect(info_list[repaint_index]->paint_recording_size())));
}
info_list.clear();
}
}
};
TEST_F(PaintInfoTest, CornerScalingPixelCanvasEnabled) {
PaintInfos info_list;
for (float dsf : kDsfList) {
ui::PaintContext context(nullptr, dsf, gfx::Rect(), true);
info_list = GetPaintInfoSetup(context);
VerifyPixelCanvasCornerScaling(info_list);
info_list.clear();
}
// More accurate testing for 1.25 dsf
ui::PaintContext context(nullptr, DSF125, gfx::Rect(), true);
info_list = GetPaintInfoSetup(context);
VerifyPixelCanvasCornerScaling(info_list);
EXPECT_EQ(info_list[0]->paint_recording_size(), gfx::Size(154, 570));
EXPECT_EQ(info_list[1]->paint_recording_size(), gfx::Size(154, 190));
EXPECT_EQ(info_list[2]->paint_recording_bounds(),
gfx::Rect(0, 190, 154, 190));
EXPECT_EQ(info_list[3]->paint_recording_size(), gfx::Size(51, 190));
EXPECT_EQ(info_list[4]->paint_recording_bounds(),
gfx::Rect(51, 190, 52, 190));
EXPECT_EQ(info_list[5]->paint_recording_bounds(),
gfx::Rect(103, 190, 51, 190));
EXPECT_EQ(info_list[6]->paint_recording_bounds(),
gfx::Rect(0, 380, 154, 190));
EXPECT_EQ(info_list[7]->paint_recording_size(), gfx::Size(103, 190));
EXPECT_EQ(info_list[8]->paint_recording_bounds(),
gfx::Rect(103, 380, 51, 190));
}
TEST_F(PaintInfoTest, ScalingWithPixelCanvasDisabled) {
for (float dsf : kDsfList) {
ui::PaintContext context(nullptr, dsf, gfx::Rect(), false);
PaintInfos info_list = GetPaintInfoSetup(context);
VerifyPixelCanvasCornerScaling(info_list);
VerifyPixelSizesAreSameAsDIPSize(info_list);
info_list.clear();
}
}
TEST_F(PaintInfoTest, Invalidation) {
for (float dsf : kDsfList) {
VerifyInvalidationRects(dsf, false);
VerifyInvalidationRects(dsf, true);
}
}
// Make sure the PaintInfo used for view's layer uses the
// corderedbounds.
TEST_F(PaintInfoTest, LayerPaintInfo) {
const gfx::Rect kViewBounds(15, 20, 7, 13);
struct TestData {
const float dsf;
const gfx::Size size;
};
const TestData kTestData[6]{
{1.0f, {7, 13}}, // rounded enclosing (if these scaling is appleid)
{1.25f, {9, 16}}, // 9x16 10x17
{1.5f, {10, 20}}, // 11x20 11x20
{1.6f, {11, 21}}, // 11x21 12x21
{1.75f, {13, 23}}, // 12x23 13x23
{2.f, {14, 26}}, // 14x26 14x26
};
for (const TestData& data : kTestData) {
SCOPED_TRACE(testing::Message() << "dsf:" << data.dsf);
ui::PaintContext context(nullptr, data.dsf, gfx::Rect(), true);
PaintInfo parent_paint_info(context, gfx::Size());
PaintInfo paint_info = PaintInfo::CreateChildPaintInfo(
parent_paint_info, kViewBounds, gfx::Size(),
PaintInfo::ScaleType::kScaleWithEdgeSnapping, true);
EXPECT_EQ(gfx::Rect(data.size), paint_info.paint_recording_bounds());
}
}
} // namespace views
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