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| 1 // Copyright 2013 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/corewm/tooltip_aura.h" | |
| 6 | |
| 7 #include "base/strings/utf_string_conversions.h" | |
| 8 #include "ui/aura/test/aura_test_base.h" | |
| 9 #include "ui/gfx/font_list.h" | |
| 10 #include "ui/gfx/text_elider.h" | |
| 11 #include "ui/gfx/text_utils.h" | |
| 12 | |
| 13 using base::ASCIIToUTF16; | |
| 14 using base::UTF8ToUTF16; | |
| 15 | |
| 16 namespace views { | |
| 17 namespace corewm { | |
| 18 | |
| 19 typedef aura::test::AuraTestBase TooltipAuraTest; | |
| 20 | |
| 21 TEST_F(TooltipAuraTest, TrimTooltipToFitTests) { | |
| 22 const gfx::FontList font_list; | |
| 23 const int max_width = 4000; | |
| 24 base::string16 tooltip; | |
| 25 int width, line_count, expect_lines; | |
| 26 int max_pixel_width = 400; // copied from constants in tooltip_controller.cc | |
| 27 int max_lines = 10; // copied from constants in tooltip_controller.cc | |
| 28 size_t tooltip_len; | |
| 29 | |
| 30 // Error in computed size vs. expected size should not be greater than the | |
| 31 // size of the longest word. | |
| 32 int error_in_pixel_width = gfx::GetStringWidth(ASCIIToUTF16("tooltip"), | |
| 33 font_list); | |
| 34 | |
| 35 // Long tooltips should wrap to next line | |
| 36 tooltip.clear(); | |
| 37 width = line_count = -1; | |
| 38 expect_lines = 3; | |
| 39 for (; gfx::GetStringWidth(tooltip, font_list) <= | |
| 40 (expect_lines - 1) * max_pixel_width;) | |
| 41 tooltip.append(ASCIIToUTF16("This is part of the tooltip")); | |
| 42 tooltip_len = tooltip.length(); | |
| 43 TooltipAura::TrimTooltipToFit(font_list, max_width, &tooltip, &width, | |
| 44 &line_count); | |
| 45 EXPECT_NEAR(max_pixel_width, width, error_in_pixel_width); | |
| 46 EXPECT_EQ(expect_lines, line_count); | |
| 47 EXPECT_EQ(tooltip_len + expect_lines - 1, tooltip.length()); | |
| 48 | |
| 49 // More than |max_lines| lines should get truncated at 10 lines. | |
| 50 tooltip.clear(); | |
| 51 width = line_count = -1; | |
| 52 expect_lines = 13; | |
| 53 for (; gfx::GetStringWidth(tooltip, font_list) <= | |
| 54 (expect_lines - 1) * max_pixel_width;) | |
| 55 tooltip.append(ASCIIToUTF16("This is part of the tooltip")); | |
| 56 TooltipAura::TrimTooltipToFit(font_list, max_width, &tooltip, &width, | |
| 57 &line_count); | |
| 58 EXPECT_NEAR(max_pixel_width, width, error_in_pixel_width); | |
| 59 EXPECT_EQ(max_lines, line_count); | |
| 60 | |
| 61 // Long multi line tooltips should wrap individual lines. | |
| 62 tooltip.clear(); | |
| 63 width = line_count = -1; | |
| 64 expect_lines = 4; | |
| 65 for (; gfx::GetStringWidth(tooltip, font_list) <= | |
| 66 (expect_lines - 2) * max_pixel_width;) | |
| 67 tooltip.append(ASCIIToUTF16("This is part of the tooltip")); | |
| 68 tooltip.insert(tooltip.length() / 2, ASCIIToUTF16("\n")); | |
| 69 tooltip_len = tooltip.length(); | |
| 70 TooltipAura::TrimTooltipToFit(font_list, max_width, &tooltip, &width, | |
| 71 &line_count); | |
| 72 EXPECT_NEAR(max_pixel_width, width, error_in_pixel_width); | |
| 73 EXPECT_EQ(expect_lines, line_count); | |
| 74 // We may have inserted the line break above near a space which will get | |
| 75 // trimmed. Hence we may be off by 1 in the final tooltip length calculation. | |
| 76 EXPECT_NEAR(tooltip_len + expect_lines - 2, tooltip.length(), 1); | |
| 77 | |
| 78 #if !defined(OS_WIN) | |
| 79 // Tooltip with really long word gets elided. | |
| 80 tooltip.clear(); | |
| 81 width = line_count = -1; | |
| 82 tooltip = UTF8ToUTF16(std::string('a', max_pixel_width)); | |
| 83 TooltipAura::TrimTooltipToFit(font_list, max_width, &tooltip, &width, | |
| 84 &line_count); | |
| 85 EXPECT_NEAR(max_pixel_width, width, 5); | |
| 86 EXPECT_EQ(1, line_count); | |
| 87 EXPECT_EQ(gfx::ElideText(UTF8ToUTF16(std::string('a', max_pixel_width)), | |
| 88 font_list, max_pixel_width, gfx::ELIDE_TAIL), | |
| 89 tooltip); | |
| 90 #endif | |
| 91 | |
| 92 // Normal small tooltip should stay as is. | |
| 93 tooltip.clear(); | |
| 94 width = line_count = -1; | |
| 95 tooltip = ASCIIToUTF16("Small Tooltip"); | |
| 96 TooltipAura::TrimTooltipToFit(font_list, max_width, &tooltip, &width, | |
| 97 &line_count); | |
| 98 EXPECT_EQ(gfx::GetStringWidth(ASCIIToUTF16("Small Tooltip"), font_list), | |
| 99 width); | |
| 100 EXPECT_EQ(1, line_count); | |
| 101 EXPECT_EQ(ASCIIToUTF16("Small Tooltip"), tooltip); | |
| 102 | |
| 103 // Normal small multi-line tooltip should stay as is. | |
| 104 tooltip.clear(); | |
| 105 width = line_count = -1; | |
| 106 tooltip = ASCIIToUTF16("Multi line\nTooltip"); | |
| 107 TooltipAura::TrimTooltipToFit(font_list, max_width, &tooltip, &width, | |
| 108 &line_count); | |
| 109 int expected_width = gfx::GetStringWidth(ASCIIToUTF16("Multi line"), | |
| 110 font_list); | |
| 111 expected_width = std::max(expected_width, | |
| 112 gfx::GetStringWidth(ASCIIToUTF16("Tooltip"), | |
| 113 font_list)); | |
| 114 EXPECT_EQ(expected_width, width); | |
| 115 EXPECT_EQ(2, line_count); | |
| 116 EXPECT_EQ(ASCIIToUTF16("Multi line\nTooltip"), tooltip); | |
| 117 | |
| 118 // Whitespaces in tooltips are preserved. | |
| 119 tooltip.clear(); | |
| 120 width = line_count = -1; | |
| 121 tooltip = ASCIIToUTF16("Small Tool t\tip"); | |
| 122 TooltipAura::TrimTooltipToFit(font_list, max_width, &tooltip, &width, | |
| 123 &line_count); | |
| 124 EXPECT_EQ(gfx::GetStringWidth(ASCIIToUTF16("Small Tool t\tip"), font_list), | |
| 125 width); | |
| 126 EXPECT_EQ(1, line_count); | |
| 127 EXPECT_EQ(ASCIIToUTF16("Small Tool t\tip"), tooltip); | |
| 128 } | |
| 129 | |
| 130 } // namespace corewm | |
| 131 } // namespace views | |
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