1 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
2 // Use of this source code is governed by a BSD-style license that can be
3 // found in the LICENSE file.
4
5 #include "testing/gtest/include/gtest/gtest.h"
6 #include "ui/base/layout.h"
7 #include "ui/views/border.h"
8 #include "ui/views/controls/button/image_button.h"
9 #include "ui/views/test/views_test_base.h"
10
11 namespace {
12
CreateTestImage(int width,int height)13 gfx::ImageSkia CreateTestImage(int width, int height) {
14 SkBitmap bitmap;
15 bitmap.setConfig(SkBitmap::kARGB_8888_Config, width, height);
16 bitmap.allocPixels();
17 return gfx::ImageSkia::CreateFrom1xBitmap(bitmap);
18 }
19
20 } // namespace
21
22 namespace views {
23
24 typedef ViewsTestBase ImageButtonTest;
25
TEST_F(ImageButtonTest,Basics)26 TEST_F(ImageButtonTest, Basics) {
27 ImageButton button(NULL);
28
29 // Our image to paint starts empty.
30 EXPECT_TRUE(button.GetImageToPaint().isNull());
31
32 // Without a theme, buttons are 16x14 by default.
33 EXPECT_EQ("16x14", button.GetPreferredSize().ToString());
34
35 // We can set a preferred size when we have no image.
36 button.SetPreferredSize(gfx::Size(5, 15));
37 EXPECT_EQ("5x15", button.GetPreferredSize().ToString());
38
39 // Set a normal image.
40 gfx::ImageSkia normal_image = CreateTestImage(10, 20);
41 button.SetImage(CustomButton::STATE_NORMAL, &normal_image);
42
43 // Image uses normal image for painting.
44 EXPECT_FALSE(button.GetImageToPaint().isNull());
45 EXPECT_EQ(10, button.GetImageToPaint().width());
46 EXPECT_EQ(20, button.GetImageToPaint().height());
47
48 // Preferred size is the normal button size.
49 EXPECT_EQ("10x20", button.GetPreferredSize().ToString());
50
51 // Set a pushed image.
52 gfx::ImageSkia pushed_image = CreateTestImage(11, 21);
53 button.SetImage(CustomButton::STATE_PRESSED, &pushed_image);
54
55 // By convention, preferred size doesn't change, even though pushed image
56 // is bigger.
57 EXPECT_EQ("10x20", button.GetPreferredSize().ToString());
58
59 // We're still painting the normal image.
60 EXPECT_FALSE(button.GetImageToPaint().isNull());
61 EXPECT_EQ(10, button.GetImageToPaint().width());
62 EXPECT_EQ(20, button.GetImageToPaint().height());
63 }
64
TEST_F(ImageButtonTest,SetAndGetImage)65 TEST_F(ImageButtonTest, SetAndGetImage) {
66 ImageButton button(NULL);
67
68 // Images start as null.
69 EXPECT_TRUE(button.GetImage(Button::STATE_NORMAL).isNull());
70 EXPECT_TRUE(button.GetImage(Button::STATE_HOVERED).isNull());
71 EXPECT_TRUE(button.GetImage(Button::STATE_PRESSED).isNull());
72 EXPECT_TRUE(button.GetImage(Button::STATE_DISABLED).isNull());
73
74 // Setting images works as expected.
75 gfx::ImageSkia image1 = CreateTestImage(10, 11);
76 gfx::ImageSkia image2 = CreateTestImage(20, 21);
77 button.SetImage(Button::STATE_NORMAL, &image1);
78 button.SetImage(Button::STATE_HOVERED, &image2);
79 EXPECT_TRUE(
80 button.GetImage(Button::STATE_NORMAL).BackedBySameObjectAs(image1));
81 EXPECT_TRUE(
82 button.GetImage(Button::STATE_HOVERED).BackedBySameObjectAs(image2));
83 EXPECT_TRUE(button.GetImage(Button::STATE_PRESSED).isNull());
84 EXPECT_TRUE(button.GetImage(Button::STATE_DISABLED).isNull());
85
86 // ImageButton supports NULL image pointers.
87 button.SetImage(Button::STATE_NORMAL, NULL);
88 EXPECT_TRUE(button.GetImage(Button::STATE_NORMAL).isNull());
89 }
90
TEST_F(ImageButtonTest,ImagePositionWithBorder)91 TEST_F(ImageButtonTest, ImagePositionWithBorder) {
92 ImageButton button(NULL);
93 gfx::ImageSkia image = CreateTestImage(20, 30);
94 button.SetImage(CustomButton::STATE_NORMAL, &image);
95
96 // The image should be painted at the top-left corner.
97 EXPECT_EQ(gfx::Point().ToString(),
98 button.ComputeImagePaintPosition(image).ToString());
99
100 button.SetBorder(views::Border::CreateEmptyBorder(10, 5, 0, 0));
101 EXPECT_EQ(gfx::Point(5, 10).ToString(),
102 button.ComputeImagePaintPosition(image).ToString());
103
104 button.SetBorder(Border::NullBorder());
105 button.SetBounds(0, 0, 50, 50);
106 EXPECT_EQ(gfx::Point().ToString(),
107 button.ComputeImagePaintPosition(image).ToString());
108
109 button.SetImageAlignment(ImageButton::ALIGN_CENTER,
110 ImageButton::ALIGN_MIDDLE);
111 EXPECT_EQ(gfx::Point(15, 10).ToString(),
112 button.ComputeImagePaintPosition(image).ToString());
113 button.SetBorder(views::Border::CreateEmptyBorder(10, 10, 0, 0));
114 EXPECT_EQ(gfx::Point(20, 15).ToString(),
115 button.ComputeImagePaintPosition(image).ToString());
116 }
117
TEST_F(ImageButtonTest,LeftAlignedMirrored)118 TEST_F(ImageButtonTest, LeftAlignedMirrored) {
119 ImageButton button(NULL);
120 gfx::ImageSkia image = CreateTestImage(20, 30);
121 button.SetImage(CustomButton::STATE_NORMAL, &image);
122 button.SetBounds(0, 0, 50, 30);
123 button.SetImageAlignment(ImageButton::ALIGN_LEFT,
124 ImageButton::ALIGN_BOTTOM);
125 button.SetDrawImageMirrored(true);
126
127 // Because the coordinates are flipped, we should expect this to draw as if
128 // it were ALIGN_RIGHT.
129 EXPECT_EQ(gfx::Point(30, 0).ToString(),
130 button.ComputeImagePaintPosition(image).ToString());
131 }
132
TEST_F(ImageButtonTest,RightAlignedMirrored)133 TEST_F(ImageButtonTest, RightAlignedMirrored) {
134 ImageButton button(NULL);
135 gfx::ImageSkia image = CreateTestImage(20, 30);
136 button.SetImage(CustomButton::STATE_NORMAL, &image);
137 button.SetBounds(0, 0, 50, 30);
138 button.SetImageAlignment(ImageButton::ALIGN_RIGHT,
139 ImageButton::ALIGN_BOTTOM);
140 button.SetDrawImageMirrored(true);
141
142 // Because the coordinates are flipped, we should expect this to draw as if
143 // it were ALIGN_LEFT.
144 EXPECT_EQ(gfx::Point(0, 0).ToString(),
145 button.ComputeImagePaintPosition(image).ToString());
146 }
147
148 } // namespace views
149