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// Copyright (c) 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 "testing/gtest/include/gtest/gtest.h"
#include "ui/base/layout.h"
#include "ui/views/border.h"
#include "ui/views/controls/button/image_button.h"
#include "ui/views/test/views_test_base.h"
namespace {
gfx::ImageSkia CreateTestImage(int width, int height) {
SkBitmap bitmap;
bitmap.allocN32Pixels(width, height);
return gfx::ImageSkia::CreateFrom1xBitmap(bitmap);
}
} // namespace
namespace views {
typedef ViewsTestBase ImageButtonTest;
TEST_F(ImageButtonTest, Basics) {
ImageButton button(NULL);
// Our image to paint starts empty.
EXPECT_TRUE(button.GetImageToPaint().isNull());
// Without an image, buttons are 16x14 by default.
EXPECT_EQ("16x14", button.GetPreferredSize().ToString());
// The minimum image size should be applied even when there is no image.
button.SetMinimumImageSize(gfx::Size(5, 15));
EXPECT_EQ("5x15", button.minimum_image_size().ToString());
EXPECT_EQ("16x15", button.GetPreferredSize().ToString());
// Set a normal image.
gfx::ImageSkia normal_image = CreateTestImage(10, 20);
button.SetImage(CustomButton::STATE_NORMAL, &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("10x20", button.GetPreferredSize().ToString());
// Set a pushed image.
gfx::ImageSkia pushed_image = CreateTestImage(11, 21);
button.SetImage(CustomButton::STATE_PRESSED, &pushed_image);
// By convention, preferred size doesn't change, even though pushed image
// is bigger.
EXPECT_EQ("10x20", button.GetPreferredSize().ToString());
// 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("15x5", button.minimum_image_size().ToString());
EXPECT_EQ("15x20", button.GetPreferredSize().ToString());
button.SetMinimumImageSize(gfx::Size(15, 25));
EXPECT_EQ("15x25", button.minimum_image_size().ToString());
EXPECT_EQ("15x25", button.GetPreferredSize().ToString());
}
TEST_F(ImageButtonTest, SetAndGetImage) {
ImageButton button(NULL);
// 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 = CreateTestImage(10, 11);
gfx::ImageSkia image2 = CreateTestImage(20, 21);
button.SetImage(Button::STATE_NORMAL, &image1);
button.SetImage(Button::STATE_HOVERED, &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.SetImage(Button::STATE_NORMAL, NULL);
EXPECT_TRUE(button.GetImage(Button::STATE_NORMAL).isNull());
}
TEST_F(ImageButtonTest, ImagePositionWithBorder) {
ImageButton button(NULL);
gfx::ImageSkia image = CreateTestImage(20, 30);
button.SetImage(CustomButton::STATE_NORMAL, &image);
// The image should be painted at the top-left corner.
EXPECT_EQ(gfx::Point().ToString(),
button.ComputeImagePaintPosition(image).ToString());
button.SetBorder(views::Border::CreateEmptyBorder(10, 5, 0, 0));
EXPECT_EQ(gfx::Point(5, 10).ToString(),
button.ComputeImagePaintPosition(image).ToString());
button.SetBorder(Border::NullBorder());
button.SetBounds(0, 0, 50, 50);
EXPECT_EQ(gfx::Point().ToString(),
button.ComputeImagePaintPosition(image).ToString());
button.SetImageAlignment(ImageButton::ALIGN_CENTER,
ImageButton::ALIGN_MIDDLE);
EXPECT_EQ(gfx::Point(15, 10).ToString(),
button.ComputeImagePaintPosition(image).ToString());
button.SetBorder(views::Border::CreateEmptyBorder(10, 10, 0, 0));
EXPECT_EQ(gfx::Point(20, 15).ToString(),
button.ComputeImagePaintPosition(image).ToString());
// The entire button's size should take the border into account.
EXPECT_EQ(gfx::Size(30, 40).ToString(), button.GetPreferredSize().ToString());
// The border should be added on top of the minimum image size.
button.SetMinimumImageSize(gfx::Size(30, 5));
EXPECT_EQ(gfx::Size(40, 40).ToString(), button.GetPreferredSize().ToString());
}
TEST_F(ImageButtonTest, LeftAlignedMirrored) {
ImageButton button(NULL);
gfx::ImageSkia image = CreateTestImage(20, 30);
button.SetImage(CustomButton::STATE_NORMAL, &image);
button.SetBounds(0, 0, 50, 30);
button.SetImageAlignment(ImageButton::ALIGN_LEFT,
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).ToString(),
button.ComputeImagePaintPosition(image).ToString());
}
TEST_F(ImageButtonTest, RightAlignedMirrored) {
ImageButton button(NULL);
gfx::ImageSkia image = CreateTestImage(20, 30);
button.SetImage(CustomButton::STATE_NORMAL, &image);
button.SetBounds(0, 0, 50, 30);
button.SetImageAlignment(ImageButton::ALIGN_RIGHT,
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).ToString(),
button.ComputeImagePaintPosition(image).ToString());
}
} // namespace views
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