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// Copyright 2012 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/layout/fill_layout.h"
#include <memory>
#include "base/memory/raw_ptr.h"
#include "testing/gtest/include/gtest/gtest.h"
#include "ui/views/border.h"
#include "ui/views/test/test_views.h"
#include "ui/views/test/views_test_utils.h"
#include "ui/views/view.h"
#include "ui/views/view_class_properties.h"
namespace views {
namespace {
class FillLayoutTest : public testing::Test {
public:
static constexpr int kDefaultHostWidth = 100;
static constexpr int kDefaultHostHeight = 200;
FillLayoutTest() : host_(std::make_unique<View>()) {
host_->SetLayoutManager(std::make_unique<FillLayout>());
SetHostSize(kDefaultHostWidth, kDefaultHostHeight);
}
FillLayoutTest(const FillLayoutTest&) = delete;
FillLayoutTest& operator=(const FillLayoutTest&) = delete;
protected:
// Convenience function to get the preferred size from `layout()`.
gfx::Size GetPreferredSize() {
return layout()->GetPreferredSize(host_.get());
}
// Convenience function to get the preferred height for width from `layout()`.
int GetPreferredHeightForWidth(int width) {
return layout()->GetPreferredHeightForWidth(host_.get(), width);
}
// Creates a View with the given |width| and |height| and adds it to |host_|.
StaticSizedView* AddChildView(int width, int height) {
StaticSizedView* child_view = new StaticSizedView(gfx::Size(width, height));
child_view->SizeToPreferredSize();
host_->AddChildViewRaw(child_view);
return child_view;
}
void SetHostSize(int width, int height) {
host_->SetSize(gfx::Size(width, height));
}
void SetHostInsets(const gfx::Insets& insets) {
host_->SetBorder(CreateEmptyBorder(insets));
}
FillLayout* layout() {
return static_cast<FillLayout*>(host_->GetLayoutManager());
}
std::unique_ptr<View> host_;
};
} // namespace
TEST_F(FillLayoutTest, GetPreferredSizeWithNoChildren) {
EXPECT_EQ(gfx::Size(0, 0), GetPreferredSize());
SetHostSize(0, 0);
EXPECT_EQ(gfx::Size(0, 0), GetPreferredSize());
}
TEST_F(FillLayoutTest, GetPreferredSizeWithOneChild) {
AddChildView(25, 50);
EXPECT_EQ(gfx::Size(25, 50), GetPreferredSize());
}
TEST_F(FillLayoutTest, GetPreferredSizeWithInsets) {
const int kChildWidth = 25;
const int kChildHeight = 50;
const int kTopInset = 2;
const int kLeftInset = 3;
const int kBottomInset = 8;
const int kRightInset = 7;
AddChildView(kChildWidth, kChildHeight);
SetHostInsets(
gfx::Insets::TLBR(kTopInset, kLeftInset, kBottomInset, kRightInset));
EXPECT_EQ(gfx::Size(kChildWidth + kLeftInset + kRightInset,
kChildHeight + kTopInset + kBottomInset),
GetPreferredSize());
}
TEST_F(FillLayoutTest, GetPreferredSizeWithMultipleChildren) {
AddChildView(10, 50);
AddChildView(5, 5);
AddChildView(25, 10);
EXPECT_EQ(gfx::Size(25, 50), GetPreferredSize());
}
TEST_F(FillLayoutTest, GetPreferredHeightForWidthWithNoChildren) {
EXPECT_EQ(0, GetPreferredHeightForWidth(0));
EXPECT_EQ(0, GetPreferredHeightForWidth(100));
SetHostSize(0, 0);
EXPECT_EQ(0, GetPreferredHeightForWidth(0));
EXPECT_EQ(0, GetPreferredHeightForWidth(100));
}
TEST_F(FillLayoutTest, GetPreferredHeightForWidthWithOneChild) {
AddChildView(25, 50);
EXPECT_EQ(50, GetPreferredHeightForWidth(0));
EXPECT_EQ(50, GetPreferredHeightForWidth(25));
EXPECT_EQ(50, GetPreferredHeightForWidth(100));
}
TEST_F(FillLayoutTest, GetPreferredHeightForWidthWithInsets) {
const int kChildWidth = 25;
const int kChildHeight = 50;
const int kTopInset = 2;
const int kLeftInset = 3;
const int kBottomInset = 8;
const int kRightInset = 7;
const int kExpectedHeight = kChildHeight + kTopInset + kBottomInset;
AddChildView(kChildWidth, kChildHeight);
SetHostInsets(
gfx::Insets::TLBR(kTopInset, kLeftInset, kBottomInset, kRightInset));
EXPECT_EQ(kExpectedHeight, GetPreferredHeightForWidth(0));
EXPECT_EQ(kExpectedHeight, GetPreferredHeightForWidth(25));
EXPECT_EQ(kExpectedHeight, GetPreferredHeightForWidth(100));
}
TEST_F(FillLayoutTest, GetPreferredHeightForWidthWithMultipleChildren) {
AddChildView(10, 50);
AddChildView(5, 5);
AddChildView(25, 10);
EXPECT_EQ(50, GetPreferredHeightForWidth(0));
EXPECT_EQ(50, GetPreferredHeightForWidth(25));
EXPECT_EQ(50, GetPreferredHeightForWidth(100));
}
TEST_F(FillLayoutTest, LayoutWithNoChildren) {
test::RunScheduledLayout(host_.get());
// Makes sure there is no crash.
}
TEST_F(FillLayoutTest, LayoutWithOneChild) {
View* const child = AddChildView(25, 50);
test::RunScheduledLayout(host_.get());
EXPECT_EQ(gfx::Rect(0, 0, kDefaultHostWidth, kDefaultHostHeight),
child->bounds());
}
TEST_F(FillLayoutTest, LayoutWithInsets) {
const int kChildWidth = 25;
const int kChildHeight = 50;
const int kTopInset = 2;
const int kLeftInset = 3;
const int kBottomInset = 8;
const int kRightInset = 7;
View* const child = AddChildView(kChildWidth, kChildHeight);
SetHostInsets(
gfx::Insets::TLBR(kTopInset, kLeftInset, kBottomInset, kRightInset));
test::RunScheduledLayout(host_.get());
EXPECT_EQ(gfx::Rect(kLeftInset, kTopInset,
kDefaultHostWidth - kLeftInset - kRightInset,
kDefaultHostHeight - kTopInset - kBottomInset),
child->bounds());
}
TEST_F(FillLayoutTest, LayoutMultipleChildren) {
View* const child_1 = AddChildView(10, 50);
View* const child_2 = AddChildView(5, 5);
View* const child_3 = AddChildView(25, 10);
const gfx::Rect kExpectedBounds(0, 0, kDefaultHostWidth, kDefaultHostHeight);
test::RunScheduledLayout(host_.get());
EXPECT_EQ(kExpectedBounds, child_1->bounds());
EXPECT_EQ(kExpectedBounds, child_2->bounds());
EXPECT_EQ(kExpectedBounds, child_3->bounds());
}
TEST_F(FillLayoutTest, LayoutIgnoreView) {
View* const child_1 = AddChildView(10, 50);
View* const child_2 = AddChildView(5, 5);
View* const child_3 = AddChildView(25, 10);
child_3->SetProperty(kViewIgnoredByLayoutKey, true);
EXPECT_EQ(gfx::Size(10, 50), GetPreferredSize());
test::RunScheduledLayout(host_.get());
const gfx::Size kExpectedSize(kDefaultHostWidth, kDefaultHostHeight);
EXPECT_EQ(kExpectedSize, child_1->size());
EXPECT_EQ(kExpectedSize, child_2->size());
EXPECT_EQ(gfx::Size(25, 10), child_3->size());
}
TEST_F(FillLayoutTest, LayoutIncludesHiddenView) {
View* const child_1 = AddChildView(10, 50);
View* const child_2 = AddChildView(5, 5);
View* const child_3 = AddChildView(25, 10);
child_3->SetVisible(false);
EXPECT_EQ(gfx::Size(25, 50), GetPreferredSize());
test::RunScheduledLayout(host_.get());
const gfx::Size kExpectedSize(kDefaultHostWidth, kDefaultHostHeight);
EXPECT_EQ(kExpectedSize, child_1->size());
EXPECT_EQ(kExpectedSize, child_2->size());
EXPECT_EQ(kExpectedSize, child_3->size());
}
TEST_F(FillLayoutTest, MinimumSizeDisabled) {
StaticSizedView* const child_1 = AddChildView(10, 50);
StaticSizedView* const child_2 = AddChildView(5, 5);
StaticSizedView* const child_3 = AddChildView(25, 10);
child_1->set_minimum_size({1, 3});
child_2->set_minimum_size({3, 1});
child_3->set_minimum_size({2, 2});
EXPECT_EQ(host_->GetPreferredSize({}), host_->GetMinimumSize());
}
TEST_F(FillLayoutTest, MinimumSizeEnabled) {
layout()->SetMinimumSizeEnabled(true);
StaticSizedView* const child_1 = AddChildView(10, 50);
StaticSizedView* const child_2 = AddChildView(5, 5);
StaticSizedView* const child_3 = AddChildView(25, 10);
child_1->set_minimum_size({1, 3});
child_2->set_minimum_size({3, 1});
child_3->set_minimum_size({2, 2});
EXPECT_EQ(gfx::Size(3, 3), host_->GetMinimumSize());
}
TEST_F(FillLayoutTest, MinimumSizeExcludesView) {
layout()->SetMinimumSizeEnabled(true);
StaticSizedView* const child_1 = AddChildView(10, 50);
StaticSizedView* const child_2 = AddChildView(5, 5);
StaticSizedView* const child_3 = AddChildView(25, 10);
child_1->set_minimum_size({1, 3});
child_2->set_minimum_size({3, 1});
child_3->set_minimum_size({2, 2});
child_2->SetProperty(kViewIgnoredByLayoutKey, true);
EXPECT_EQ(gfx::Size(2, 3), host_->GetMinimumSize());
}
} // namespace views
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