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| 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 "ui/views/controls/button/label_button.h" | |
| 6 | |
| 7 #include "base/strings/utf_string_conversions.h" | |
| 8 #include "third_party/skia/include/core/SkBitmap.h" | |
| 9 #include "ui/gfx/canvas.h" | |
| 10 #include "ui/gfx/font_list.h" | |
| 11 #include "ui/gfx/size.h" | |
| 12 #include "ui/gfx/text_utils.h" | |
| 13 #include "ui/views/test/views_test_base.h" | |
| 14 | |
| 15 using base::ASCIIToUTF16; | |
| 16 | |
| 17 namespace { | |
| 18 | |
| 19 gfx::ImageSkia CreateTestImage(int width, int height) { | |
| 20 SkBitmap bitmap; | |
| 21 bitmap.allocN32Pixels(width, height); | |
| 22 return gfx::ImageSkia::CreateFrom1xBitmap(bitmap); | |
| 23 } | |
| 24 | |
| 25 } // namespace | |
| 26 | |
| 27 namespace views { | |
| 28 | |
| 29 typedef ViewsTestBase LabelButtonTest; | |
| 30 | |
| 31 TEST_F(LabelButtonTest, Init) { | |
| 32 const base::string16 text(ASCIIToUTF16("abc")); | |
| 33 LabelButton button(NULL, text); | |
| 34 | |
| 35 EXPECT_TRUE(button.GetImage(Button::STATE_NORMAL).isNull()); | |
| 36 EXPECT_TRUE(button.GetImage(Button::STATE_HOVERED).isNull()); | |
| 37 EXPECT_TRUE(button.GetImage(Button::STATE_PRESSED).isNull()); | |
| 38 EXPECT_TRUE(button.GetImage(Button::STATE_DISABLED).isNull()); | |
| 39 | |
| 40 EXPECT_EQ(text, button.GetText()); | |
| 41 EXPECT_EQ(gfx::ALIGN_LEFT, button.GetHorizontalAlignment()); | |
| 42 EXPECT_FALSE(button.is_default()); | |
| 43 EXPECT_EQ(button.style(), Button::STYLE_TEXTBUTTON); | |
| 44 EXPECT_EQ(Button::STATE_NORMAL, button.state()); | |
| 45 | |
| 46 EXPECT_EQ(button.image_->parent(), &button); | |
| 47 EXPECT_EQ(button.label_->parent(), &button); | |
| 48 } | |
| 49 | |
| 50 TEST_F(LabelButtonTest, Label) { | |
| 51 LabelButton button(NULL, base::string16()); | |
| 52 EXPECT_TRUE(button.GetText().empty()); | |
| 53 | |
| 54 const gfx::FontList font_list; | |
| 55 const base::string16 short_text(ASCIIToUTF16("abcdefghijklm")); | |
| 56 const base::string16 long_text(ASCIIToUTF16("abcdefghijklmnopqrstuvwxyz")); | |
| 57 const int short_text_width = gfx::GetStringWidth(short_text, font_list); | |
| 58 const int long_text_width = gfx::GetStringWidth(long_text, font_list); | |
| 59 | |
| 60 // The width increases monotonically with string size (it does not shrink). | |
| 61 EXPECT_LT(button.GetPreferredSize().width(), short_text_width); | |
| 62 button.SetText(short_text); | |
| 63 EXPECT_GT(button.GetPreferredSize().height(), font_list.GetHeight()); | |
| 64 EXPECT_GT(button.GetPreferredSize().width(), short_text_width); | |
| 65 EXPECT_LT(button.GetPreferredSize().width(), long_text_width); | |
| 66 button.SetText(long_text); | |
| 67 EXPECT_GT(button.GetPreferredSize().width(), long_text_width); | |
| 68 button.SetText(short_text); | |
| 69 EXPECT_GT(button.GetPreferredSize().width(), long_text_width); | |
| 70 | |
| 71 // Clamp the size to a maximum value. | |
| 72 button.SetMaxSize(gfx::Size(long_text_width, 1)); | |
| 73 EXPECT_EQ(button.GetPreferredSize(), gfx::Size(long_text_width, 1)); | |
| 74 | |
| 75 // Clear the monotonically increasing minimum size. | |
| 76 button.SetMinSize(gfx::Size()); | |
| 77 EXPECT_GT(button.GetPreferredSize().width(), short_text_width); | |
| 78 EXPECT_LT(button.GetPreferredSize().width(), long_text_width); | |
| 79 } | |
| 80 | |
| 81 TEST_F(LabelButtonTest, Image) { | |
| 82 LabelButton button(NULL, base::string16()); | |
| 83 | |
| 84 const int small_size = 50, large_size = 100; | |
| 85 const gfx::ImageSkia small_image = CreateTestImage(small_size, small_size); | |
| 86 const gfx::ImageSkia large_image = CreateTestImage(large_size, large_size); | |
| 87 | |
| 88 // The width increases monotonically with image size (it does not shrink). | |
| 89 EXPECT_LT(button.GetPreferredSize().width(), small_size); | |
| 90 EXPECT_LT(button.GetPreferredSize().height(), small_size); | |
| 91 button.SetImage(Button::STATE_NORMAL, small_image); | |
| 92 EXPECT_GT(button.GetPreferredSize().width(), small_size); | |
| 93 EXPECT_GT(button.GetPreferredSize().height(), small_size); | |
| 94 EXPECT_LT(button.GetPreferredSize().width(), large_size); | |
| 95 EXPECT_LT(button.GetPreferredSize().height(), large_size); | |
| 96 button.SetImage(Button::STATE_NORMAL, large_image); | |
| 97 EXPECT_GT(button.GetPreferredSize().width(), large_size); | |
| 98 EXPECT_GT(button.GetPreferredSize().height(), large_size); | |
| 99 button.SetImage(Button::STATE_NORMAL, small_image); | |
| 100 EXPECT_GT(button.GetPreferredSize().width(), large_size); | |
| 101 EXPECT_GT(button.GetPreferredSize().height(), large_size); | |
| 102 | |
| 103 // Clamp the size to a maximum value. | |
| 104 button.SetMaxSize(gfx::Size(large_size, 1)); | |
| 105 EXPECT_EQ(button.GetPreferredSize(), gfx::Size(large_size, 1)); | |
| 106 | |
| 107 // Clear the monotonically increasing minimum size. | |
| 108 button.SetMinSize(gfx::Size()); | |
| 109 EXPECT_GT(button.GetPreferredSize().width(), small_size); | |
| 110 EXPECT_LT(button.GetPreferredSize().width(), large_size); | |
| 111 } | |
| 112 | |
| 113 TEST_F(LabelButtonTest, LabelAndImage) { | |
| 114 LabelButton button(NULL, base::string16()); | |
| 115 | |
| 116 const gfx::FontList font_list; | |
| 117 const base::string16 text(ASCIIToUTF16("abcdefghijklm")); | |
| 118 const int text_width = gfx::GetStringWidth(text, font_list); | |
| 119 | |
| 120 const int image_size = 50; | |
| 121 const gfx::ImageSkia image = CreateTestImage(image_size, image_size); | |
| 122 ASSERT_LT(font_list.GetHeight(), image_size); | |
| 123 | |
| 124 // The width increases monotonically with content size (it does not shrink). | |
| 125 EXPECT_LT(button.GetPreferredSize().width(), text_width); | |
| 126 EXPECT_LT(button.GetPreferredSize().width(), image_size); | |
| 127 EXPECT_LT(button.GetPreferredSize().height(), image_size); | |
| 128 button.SetText(text); | |
| 129 EXPECT_GT(button.GetPreferredSize().width(), text_width); | |
| 130 EXPECT_GT(button.GetPreferredSize().height(), font_list.GetHeight()); | |
| 131 EXPECT_LT(button.GetPreferredSize().width(), text_width + image_size); | |
| 132 EXPECT_LT(button.GetPreferredSize().height(), image_size); | |
| 133 button.SetImage(Button::STATE_NORMAL, image); | |
| 134 EXPECT_GT(button.GetPreferredSize().width(), text_width + image_size); | |
| 135 EXPECT_GT(button.GetPreferredSize().height(), image_size); | |
| 136 | |
| 137 // Layout and ensure the image is left of the label except for ALIGN_RIGHT. | |
| 138 // (A proper parent view or layout manager would Layout on its invalidations). | |
| 139 button.SetSize(button.GetPreferredSize()); | |
| 140 button.Layout(); | |
| 141 EXPECT_EQ(gfx::ALIGN_LEFT, button.GetHorizontalAlignment()); | |
| 142 EXPECT_LT(button.image_->bounds().right(), button.label_->bounds().x()); | |
| 143 button.SetHorizontalAlignment(gfx::ALIGN_CENTER); | |
| 144 button.Layout(); | |
| 145 EXPECT_EQ(gfx::ALIGN_CENTER, button.GetHorizontalAlignment()); | |
| 146 EXPECT_LT(button.image_->bounds().right(), button.label_->bounds().x()); | |
| 147 button.SetHorizontalAlignment(gfx::ALIGN_RIGHT); | |
| 148 button.Layout(); | |
| 149 EXPECT_EQ(gfx::ALIGN_RIGHT, button.GetHorizontalAlignment()); | |
| 150 EXPECT_LT(button.label_->bounds().right(), button.image_->bounds().x()); | |
| 151 | |
| 152 button.SetText(base::string16()); | |
| 153 EXPECT_GT(button.GetPreferredSize().width(), text_width + image_size); | |
| 154 EXPECT_GT(button.GetPreferredSize().height(), image_size); | |
| 155 button.SetImage(Button::STATE_NORMAL, gfx::ImageSkia()); | |
| 156 EXPECT_GT(button.GetPreferredSize().width(), text_width + image_size); | |
| 157 EXPECT_GT(button.GetPreferredSize().height(), image_size); | |
| 158 | |
| 159 // Clamp the size to a maximum value. | |
| 160 button.SetMaxSize(gfx::Size(image_size, 1)); | |
| 161 EXPECT_EQ(button.GetPreferredSize(), gfx::Size(image_size, 1)); | |
| 162 | |
| 163 // Clear the monotonically increasing minimum size. | |
| 164 button.SetMinSize(gfx::Size()); | |
| 165 EXPECT_LT(button.GetPreferredSize().width(), text_width); | |
| 166 EXPECT_LT(button.GetPreferredSize().width(), image_size); | |
| 167 EXPECT_LT(button.GetPreferredSize().height(), image_size); | |
| 168 } | |
| 169 | |
| 170 TEST_F(LabelButtonTest, FontList) { | |
| 171 const base::string16 text(ASCIIToUTF16("abc")); | |
| 172 LabelButton button(NULL, text); | |
| 173 | |
| 174 const gfx::FontList original_font_list = button.GetFontList(); | |
| 175 const gfx::FontList large_font_list = | |
| 176 original_font_list.DeriveWithSizeDelta(100); | |
| 177 const int original_width = button.GetPreferredSize().width(); | |
| 178 const int original_height = button.GetPreferredSize().height(); | |
| 179 | |
| 180 // The button size increases when the font size is increased. | |
| 181 button.SetFontList(large_font_list); | |
| 182 EXPECT_GT(button.GetPreferredSize().width(), original_width); | |
| 183 EXPECT_GT(button.GetPreferredSize().height(), original_height); | |
| 184 | |
| 185 // The button returns to its original size when the minimal size is cleared | |
| 186 // and the original font size is restored. | |
| 187 button.SetMinSize(gfx::Size()); | |
| 188 button.SetFontList(original_font_list); | |
| 189 EXPECT_EQ(original_width, button.GetPreferredSize().width()); | |
| 190 EXPECT_EQ(original_height, button.GetPreferredSize().height()); | |
| 191 } | |
| 192 | |
| 193 TEST_F(LabelButtonTest, ChangeTextSize) { | |
| 194 const base::string16 text(ASCIIToUTF16("abc")); | |
| 195 const base::string16 longer_text(ASCIIToUTF16("abcdefghijklm")); | |
| 196 LabelButton button(NULL, text); | |
| 197 | |
| 198 const int original_width = button.GetPreferredSize().width(); | |
| 199 | |
| 200 // The button size increases when the text size is increased. | |
| 201 button.SetText(longer_text); | |
| 202 EXPECT_GT(button.GetPreferredSize().width(), original_width); | |
| 203 | |
| 204 // The button returns to its original size when the original text is restored. | |
| 205 button.SetMinSize(gfx::Size()); | |
| 206 button.SetText(text); | |
| 207 EXPECT_EQ(original_width, button.GetPreferredSize().width()); | |
| 208 } | |
| 209 | |
| 210 TEST_F(LabelButtonTest, ChangeLabelImageSpacing) { | |
| 211 LabelButton button(NULL, ASCIIToUTF16("abc")); | |
| 212 button.SetImage(Button::STATE_NORMAL, CreateTestImage(50, 50)); | |
| 213 | |
| 214 const int kOriginalSpacing = 5; | |
| 215 button.SetImageLabelSpacing(kOriginalSpacing); | |
| 216 const int original_width = button.GetPreferredSize().width(); | |
| 217 | |
| 218 // Increasing the spacing between the text and label should increase the size. | |
| 219 button.SetImageLabelSpacing(2 * kOriginalSpacing); | |
| 220 EXPECT_GT(button.GetPreferredSize().width(), original_width); | |
| 221 | |
| 222 // The button shrinks if the original spacing is restored. | |
| 223 button.SetMinSize(gfx::Size()); | |
| 224 button.SetImageLabelSpacing(kOriginalSpacing); | |
| 225 EXPECT_EQ(original_width, button.GetPreferredSize().width()); | |
| 226 } | |
| 227 | |
| 228 } // namespace views | |
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