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/base/resource/resource_bundle.h" 10 #include "ui/gfx/font_list.h" 11 #include "ui/gfx/text_elider.h" 12 #include "ui/gfx/text_utils.h" 13 14 using base::ASCIIToUTF16; 15 using base::UTF8ToUTF16; 16 17 namespace views { 18 namespace corewm { 19 20 typedef aura::test::AuraTestBase TooltipAuraTest; 21 22 TEST_F(TooltipAuraTest, TrimTooltipToFitTests) { 23 const gfx::FontList font_list; 24 const int max_width = 4000; 25 base::string16 tooltip; 26 int width, line_count, expect_lines; 27 int max_pixel_width = 400; // copied from constants in tooltip_controller.cc 28 int max_lines = 10; // copied from constants in tooltip_controller.cc 29 size_t tooltip_len; 30 31 // Error in computed size vs. expected size should not be greater than the 32 // size of the longest word. 33 int error_in_pixel_width = gfx::GetStringWidth(ASCIIToUTF16("tooltip"), 34 font_list); 35 36 // Long tooltips should wrap to next line 37 tooltip.clear(); 38 width = line_count = -1; 39 expect_lines = 3; 40 for (; gfx::GetStringWidth(tooltip, font_list) <= 41 (expect_lines - 1) * max_pixel_width;) 42 tooltip.append(ASCIIToUTF16("This is part of the tooltip")); 43 tooltip_len = tooltip.length(); 44 TooltipAura::TrimTooltipToFit(font_list, max_width, &tooltip, &width, 45 &line_count); 46 EXPECT_NEAR(max_pixel_width, width, error_in_pixel_width); 47 EXPECT_EQ(expect_lines, line_count); 48 EXPECT_EQ(tooltip_len + expect_lines - 1, tooltip.length()); 49 50 // More than |max_lines| lines should get truncated at 10 lines. 51 tooltip.clear(); 52 width = line_count = -1; 53 expect_lines = 13; 54 for (; gfx::GetStringWidth(tooltip, font_list) <= 55 (expect_lines - 1) * max_pixel_width;) 56 tooltip.append(ASCIIToUTF16("This is part of the tooltip")); 57 TooltipAura::TrimTooltipToFit(font_list, max_width, &tooltip, &width, 58 &line_count); 59 EXPECT_NEAR(max_pixel_width, width, error_in_pixel_width); 60 EXPECT_EQ(max_lines, line_count); 61 62 // Long multi line tooltips should wrap individual lines. 63 tooltip.clear(); 64 width = line_count = -1; 65 expect_lines = 4; 66 for (; gfx::GetStringWidth(tooltip, font_list) <= 67 (expect_lines - 2) * max_pixel_width;) 68 tooltip.append(ASCIIToUTF16("This is part of the tooltip")); 69 tooltip.insert(tooltip.length() / 2, ASCIIToUTF16("\n")); 70 tooltip_len = tooltip.length(); 71 TooltipAura::TrimTooltipToFit(font_list, max_width, &tooltip, &width, 72 &line_count); 73 EXPECT_NEAR(max_pixel_width, width, error_in_pixel_width); 74 EXPECT_EQ(expect_lines, line_count); 75 // We may have inserted the line break above near a space which will get 76 // trimmed. Hence we may be off by 1 in the final tooltip length calculation. 77 EXPECT_NEAR(tooltip_len + expect_lines - 2, tooltip.length(), 1); 78 79 #if !defined(OS_WIN) 80 // Tooltip with really long word gets elided. 81 tooltip.clear(); 82 width = line_count = -1; 83 tooltip = UTF8ToUTF16(std::string('a', max_pixel_width)); 84 TooltipAura::TrimTooltipToFit(font_list, max_width, &tooltip, &width, 85 &line_count); 86 EXPECT_NEAR(max_pixel_width, width, 5); 87 EXPECT_EQ(1, line_count); 88 EXPECT_EQ(gfx::ElideText(UTF8ToUTF16(std::string('a', max_pixel_width)), 89 font_list, max_pixel_width, gfx::ELIDE_TAIL), 90 tooltip); 91 #endif 92 93 // Normal small tooltip should stay as is. 94 tooltip.clear(); 95 width = line_count = -1; 96 tooltip = ASCIIToUTF16("Small Tooltip"); 97 TooltipAura::TrimTooltipToFit(font_list, max_width, &tooltip, &width, 98 &line_count); 99 EXPECT_EQ(gfx::GetStringWidth(ASCIIToUTF16("Small Tooltip"), font_list), 100 width); 101 EXPECT_EQ(1, line_count); 102 EXPECT_EQ(ASCIIToUTF16("Small Tooltip"), tooltip); 103 104 // Normal small multi-line tooltip should stay as is. 105 tooltip.clear(); 106 width = line_count = -1; 107 tooltip = ASCIIToUTF16("Multi line\nTooltip"); 108 TooltipAura::TrimTooltipToFit(font_list, max_width, &tooltip, &width, 109 &line_count); 110 int expected_width = gfx::GetStringWidth(ASCIIToUTF16("Multi line"), 111 font_list); 112 expected_width = std::max(expected_width, 113 gfx::GetStringWidth(ASCIIToUTF16("Tooltip"), 114 font_list)); 115 EXPECT_EQ(expected_width, width); 116 EXPECT_EQ(2, line_count); 117 EXPECT_EQ(ASCIIToUTF16("Multi line\nTooltip"), tooltip); 118 119 // Whitespaces in tooltips are preserved. 120 tooltip.clear(); 121 width = line_count = -1; 122 tooltip = ASCIIToUTF16("Small Tool t\tip"); 123 TooltipAura::TrimTooltipToFit(font_list, max_width, &tooltip, &width, 124 &line_count); 125 EXPECT_EQ(gfx::GetStringWidth(ASCIIToUTF16("Small Tool t\tip"), font_list), 126 width); 127 EXPECT_EQ(1, line_count); 128 EXPECT_EQ(ASCIIToUTF16("Small Tool t\tip"), tooltip); 129 } 130 131 } // namespace corewm 132 } // namespace views 133
