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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/controls/button/image_button.h"
#include "testing/gtest/include/gtest/gtest.h"
#include "third_party/skia/include/core/SkBitmap.h"
#include "ui/gfx/image/image_unittest_util.h"
#include "ui/views/border.h"
#include "ui/views/style/platform_style.h"
#include "ui/views/test/views_test_base.h"
namespace {
class Parent : public views::View {
public:
Parent() = default;
Parent(const Parent&) = delete;
Parent& operator=(const Parent&) = delete;
void ChildPreferredSizeChanged(views::View* view) override {
pref_size_changed_calls_++;
}
int pref_size_changed_calls() const { return pref_size_changed_calls_; }
private:
int pref_size_changed_calls_ = 0;
};
} // namespace
namespace views {
using ImageButtonTest = ViewsTestBase;
TEST_F(ImageButtonTest, FocusBehavior) {
ImageButton button;
EXPECT_EQ(PlatformStyle::kDefaultFocusBehavior, button.GetFocusBehavior());
}
TEST_F(ImageButtonTest, Basics) {
ImageButton button;
// Our image to paint starts empty.
EXPECT_TRUE(button.GetImageToPaint().isNull());
// Without an image, buttons are 16x14 by default.
EXPECT_EQ(gfx::Size(16, 14), button.GetPreferredSize({}));
// The minimum image size should be applied even when there is no image.
button.SetMinimumImageSize(gfx::Size(5, 15));
EXPECT_EQ(gfx::Size(5, 15), button.GetMinimumImageSize());
EXPECT_EQ(gfx::Size(16, 15), button.GetPreferredSize({}));
// Set a normal image.
gfx::ImageSkia normal_image = gfx::test::CreateImageSkia(10, 20);
button.SetImageModel(Button::STATE_NORMAL,
ui::ImageModel::FromImageSkia(normal_image));
// Image uses normal image for painting.
EXPECT_FALSE(button.GetImageToPaint().isNull());
EXPECT_EQ(10, button.GetImageToPaint().width());
EXPECT_EQ(20, button.GetImageToPaint().height());
// Preferred size is the normal button size.
EXPECT_EQ(gfx::Size(10, 20), button.GetPreferredSize({}));
// Set a pushed image.
gfx::ImageSkia pushed_image = gfx::test::CreateImageSkia(11, 21);
button.SetImageModel(Button::STATE_PRESSED,
ui::ImageModel::FromImageSkia(pushed_image));
// By convention, preferred size doesn't change, even though pushed image
// is bigger.
EXPECT_EQ(gfx::Size(10, 20), button.GetPreferredSize({}));
// We're still painting the normal image.
EXPECT_FALSE(button.GetImageToPaint().isNull());
EXPECT_EQ(10, button.GetImageToPaint().width());
EXPECT_EQ(20, button.GetImageToPaint().height());
// The minimum image size should make the preferred size bigger.
button.SetMinimumImageSize(gfx::Size(15, 5));
EXPECT_EQ(gfx::Size(15, 5), button.GetMinimumImageSize());
EXPECT_EQ(gfx::Size(15, 20), button.GetPreferredSize({}));
button.SetMinimumImageSize(gfx::Size(15, 25));
EXPECT_EQ(gfx::Size(15, 25), button.GetMinimumImageSize());
EXPECT_EQ(gfx::Size(15, 25), button.GetPreferredSize({}));
}
TEST_F(ImageButtonTest, SetAndGetImage) {
ImageButton button;
// Images start as null.
EXPECT_TRUE(button.GetImage(Button::STATE_NORMAL).isNull());
EXPECT_TRUE(button.GetImage(Button::STATE_HOVERED).isNull());
EXPECT_TRUE(button.GetImage(Button::STATE_PRESSED).isNull());
EXPECT_TRUE(button.GetImage(Button::STATE_DISABLED).isNull());
// Setting images works as expected.
gfx::ImageSkia image1 = gfx::test::CreateImageSkia(10, 11);
gfx::ImageSkia image2 = gfx::test::CreateImageSkia(20, 21);
button.SetImageModel(Button::STATE_NORMAL,
ui::ImageModel::FromImageSkia(image1));
button.SetImageModel(Button::STATE_HOVERED,
ui::ImageModel::FromImageSkia(image2));
EXPECT_TRUE(
button.GetImage(Button::STATE_NORMAL).BackedBySameObjectAs(image1));
EXPECT_TRUE(
button.GetImage(Button::STATE_HOVERED).BackedBySameObjectAs(image2));
EXPECT_TRUE(button.GetImage(Button::STATE_PRESSED).isNull());
EXPECT_TRUE(button.GetImage(Button::STATE_DISABLED).isNull());
// ImageButton supports NULL image pointers.
button.SetImageModel(Button::STATE_NORMAL, ui::ImageModel());
EXPECT_TRUE(button.GetImage(Button::STATE_NORMAL).isNull());
}
TEST_F(ImageButtonTest, ImagePositionWithBorder) {
ImageButton button;
gfx::ImageSkia image = gfx::test::CreateImageSkia(20, 30);
button.SetImageModel(Button::STATE_NORMAL,
ui::ImageModel::FromImageSkia(image));
// The image should be painted at the top-left corner.
EXPECT_EQ(gfx::Point(), button.ComputeImagePaintPosition(image));
button.SetBorder(views::CreateEmptyBorder(gfx::Insets::TLBR(10, 5, 0, 0)));
EXPECT_EQ(gfx::Point(5, 10), button.ComputeImagePaintPosition(image));
button.SetBorder(NullBorder());
button.SetBounds(0, 0, 50, 50);
EXPECT_EQ(gfx::Point(), button.ComputeImagePaintPosition(image));
button.SetImageHorizontalAlignment(ImageButton::ALIGN_CENTER);
button.SetImageVerticalAlignment(ImageButton::ALIGN_MIDDLE);
EXPECT_EQ(gfx::Point(15, 10), button.ComputeImagePaintPosition(image));
button.SetBorder(views::CreateEmptyBorder(gfx::Insets::TLBR(10, 10, 0, 0)));
EXPECT_EQ(gfx::Point(20, 15), button.ComputeImagePaintPosition(image));
// The entire button's size should take the border into account.
EXPECT_EQ(gfx::Size(30, 40), button.GetPreferredSize({}));
// The border should be added on top of the minimum image size.
button.SetMinimumImageSize(gfx::Size(30, 5));
EXPECT_EQ(gfx::Size(40, 40), button.GetPreferredSize({}));
}
TEST_F(ImageButtonTest, LeftAlignedMirrored) {
ImageButton button;
gfx::ImageSkia image = gfx::test::CreateImageSkia(20, 30);
button.SetImageModel(Button::STATE_NORMAL,
ui::ImageModel::FromImageSkia(image));
button.SetBounds(0, 0, 50, 30);
button.SetImageVerticalAlignment(ImageButton::ALIGN_BOTTOM);
button.SetDrawImageMirrored(true);
// Because the coordinates are flipped, we should expect this to draw as if
// it were ALIGN_RIGHT.
EXPECT_EQ(gfx::Point(30, 0), button.ComputeImagePaintPosition(image));
}
TEST_F(ImageButtonTest, RightAlignedMirrored) {
ImageButton button;
gfx::ImageSkia image = gfx::test::CreateImageSkia(20, 30);
button.SetImageModel(Button::STATE_NORMAL,
ui::ImageModel::FromImageSkia(image));
button.SetBounds(0, 0, 50, 30);
button.SetImageHorizontalAlignment(ImageButton::ALIGN_RIGHT);
button.SetImageVerticalAlignment(ImageButton::ALIGN_BOTTOM);
button.SetDrawImageMirrored(true);
// Because the coordinates are flipped, we should expect this to draw as if
// it were ALIGN_LEFT.
EXPECT_EQ(gfx::Point(0, 0), button.ComputeImagePaintPosition(image));
}
TEST_F(ImageButtonTest, PreferredSizeInvalidation) {
Parent parent;
ImageButton button;
gfx::ImageSkia first_image = gfx::test::CreateImageSkia(20, 30);
gfx::ImageSkia second_image = gfx::test::CreateImageSkia(/*size=*/50);
button.SetImageModel(Button::STATE_NORMAL,
ui::ImageModel::FromImageSkia(first_image));
parent.AddChildViewRaw(&button);
ASSERT_EQ(0, parent.pref_size_changed_calls());
button.SetImageModel(Button::STATE_NORMAL,
ui::ImageModel::FromImageSkia(first_image));
EXPECT_EQ(0, parent.pref_size_changed_calls());
button.SetImageModel(Button::STATE_HOVERED,
ui::ImageModel::FromImageSkia(second_image));
EXPECT_EQ(0, parent.pref_size_changed_calls());
// Changing normal state image size leads to a change in preferred size.
button.SetImageModel(Button::STATE_NORMAL,
ui::ImageModel::FromImageSkia(second_image));
EXPECT_EQ(1, parent.pref_size_changed_calls());
}
} // namespace views
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