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| 1 <!DOCTYPE html> | |
| 2 <html> | |
| 3 <head> | |
| 4 <title>Testing Widows and Orphans</title> | |
| 5 <script src="../../resources/js-test.js"></script> | |
| 6 <style> | |
| 7 body.hide-containers .container, body.hide-containers h3 { | |
| 8 display: none; | |
| 9 } | |
| 10 | |
| 11 .region { | |
| 12 height: 200px; | |
| 13 -webkit-region-fragment: break; | |
| 14 display: inline-block; | |
| 15 } | |
| 16 | |
| 17 .region0 { | |
| 18 width: 150px; | |
| 19 } | |
| 20 | |
| 21 .region1 { | |
| 22 width: 200px; | |
| 23 } | |
| 24 | |
| 25 .region2 { | |
| 26 width: 150px; | |
| 27 } | |
| 28 | |
| 29 .container { | |
| 30 width: 600px; | |
| 31 height: 200px; | |
| 32 line-height: 20px; /* 10 lines per page */ | |
| 33 font-size: 16px; | |
| 34 margin: 0 0 20px 0; | |
| 35 padding: 0; | |
| 36 overflow: hidden; | |
| 37 } | |
| 38 | |
| 39 .block { | |
| 40 margin: 0 0 15px 0; | |
| 41 padding: 0; | |
| 42 } | |
| 43 | |
| 44 .top { | |
| 45 color: red; | |
| 46 } | |
| 47 | |
| 48 .bottom { | |
| 49 color: green; | |
| 50 } | |
| 51 </style> | |
| 52 <script> | |
| 53 | |
| 54 description("Testing widows and orphans. Any green lines should be at the bottom
of regions, and any red lines should be at the top of regions."); | |
| 55 | |
| 56 if (window.testRunner) | |
| 57 testRunner.dumpAsText(); | |
| 58 | |
| 59 function createRegions(id, container) | |
| 60 { | |
| 61 for (var i = 0; i < 3; ++i) { | |
| 62 var element = document.createElement("div"); | |
| 63 element.className = "region region" + i; | |
| 64 element.style.webkitFlowFrom = id; | |
| 65 | |
| 66 container.appendChild(element); | |
| 67 } | |
| 68 } | |
| 69 | |
| 70 function createTestContainer(id, description, blocks) | |
| 71 { | |
| 72 var label = document.createElement("h3"); | |
| 73 label.textContent = id + " - " + description; | |
| 74 document.body.appendChild(label); | |
| 75 var element = document.createElement("div"); | |
| 76 element.className = "container"; | |
| 77 element.id = id; | |
| 78 | |
| 79 createRegions(id, element); | |
| 80 | |
| 81 for (var i = 1; i <= blocks.length; ++i) { | |
| 82 var block = document.createElement("div"); | |
| 83 block.className = "block"; | |
| 84 var numLines = blocks[i-1]; | |
| 85 for (var j = 1; j <= numLines; ++j) { | |
| 86 var line = document.createElement("span"); | |
| 87 line.id = id + "-block-" + i + "-line-" + j; | |
| 88 line.textContent = "Block " + i + " Line " + j; | |
| 89 block.appendChild(line); | |
| 90 block.appendChild(document.createElement("br")); | |
| 91 } | |
| 92 block.style.webkitFlowInto = id; | |
| 93 element.appendChild(block); | |
| 94 } | |
| 95 document.body.appendChild(element); | |
| 96 return element; | |
| 97 } | |
| 98 | |
| 99 function markTopLine(containerId, blockNumber, lineNumber) | |
| 100 { | |
| 101 var element = document.getElementById(containerId + "-block-" + blockNumber
+ "-line-" + lineNumber); | |
| 102 element.className = "top"; | |
| 103 } | |
| 104 | |
| 105 function markBottomLine(containerId, blockNumber, lineNumber) | |
| 106 { | |
| 107 var element = document.getElementById(containerId + "-block-" + blockNumber
+ "-line-" + lineNumber); | |
| 108 element.className = "bottom"; | |
| 109 } | |
| 110 | |
| 111 function testIsFirstInRegion(containerId, blockNumber, lineNumber) | |
| 112 { | |
| 113 var topOfContainer = document.getElementById(containerId).getBoundingClientR
ect().top; | |
| 114 var topOfLine = document.getElementById(containerId + "-block-" + blockNumbe
r + "-line-" + lineNumber).getBoundingClientRect().top; | |
| 115 | |
| 116 if (Math.abs(topOfContainer - topOfLine) < 5) // Give 5 pixels to account fo
r subpixel layout. | |
| 117 testPassed(containerId + " Block " + blockNumber + " Line " + lineNumber
+ " is correct."); | |
| 118 else | |
| 119 testFailed(containerId + " Block " + blockNumber + " Line " + lineNumber
+ " wasn't at the top of the region."); | |
| 120 } | |
| 121 | |
| 122 function runTest() | |
| 123 { | |
| 124 var container; | |
| 125 | |
| 126 createTestContainer("test1", "Normal breaking", [5, 6, 5, 5]); | |
| 127 | |
| 128 markTopLine("test1", 1, 1); | |
| 129 markBottomLine("test1", 2, 4); | |
| 130 markTopLine("test1", 2, 5); | |
| 131 markBottomLine("test1", 4, 1); | |
| 132 markTopLine("test1", 4, 2); | |
| 133 | |
| 134 testIsFirstInRegion("test1", 1, 1); | |
| 135 testIsFirstInRegion("test1", 2, 5); | |
| 136 testIsFirstInRegion("test1", 4, 2); | |
| 137 | |
| 138 container = createTestContainer("test2", "Basic Orphan", [8, 6]); | |
| 139 container.style.orphans = 2; | |
| 140 | |
| 141 markTopLine("test2", 1, 1); | |
| 142 markBottomLine("test2", 1, 8); // Orphan break happens here. | |
| 143 markTopLine("test2", 2, 1); | |
| 144 | |
| 145 testIsFirstInRegion("test2", 1, 1); | |
| 146 testIsFirstInRegion("test2", 2, 1); | |
| 147 | |
| 148 container = createTestContainer("test3", "Basic Widow", [4, 6, 3]); | |
| 149 container.style.widows = 2; | |
| 150 | |
| 151 markTopLine("test3", 1, 1); | |
| 152 markBottomLine("test3", 2, 4); // Widow break happens here. | |
| 153 markTopLine("test3", 2, 5); | |
| 154 | |
| 155 testIsFirstInRegion("test3", 1, 1); | |
| 156 testIsFirstInRegion("test3", 2, 5); | |
| 157 | |
| 158 container = createTestContainer("test4", "Orphans causing Widows", [8, 6, 4,
4]); | |
| 159 container.style.orphans = 2; | |
| 160 container.style.widows = 2; | |
| 161 | |
| 162 markTopLine("test4", 1, 1); | |
| 163 markBottomLine("test4", 1, 8); // Orphan break happens here. | |
| 164 markTopLine("test4", 2, 1); | |
| 165 markBottomLine("test4", 3, 2); // And that creates a widow forcing a break h
ere. | |
| 166 markTopLine("test4", 3, 3); | |
| 167 | |
| 168 testIsFirstInRegion("test4", 1, 1); | |
| 169 testIsFirstInRegion("test4", 2, 1); | |
| 170 testIsFirstInRegion("test4", 3, 3); | |
| 171 | |
| 172 container = createTestContainer("test5", "Widows blocked by Orphan rule", [7
, 3, 4]); | |
| 173 container.style.orphans = 2; | |
| 174 container.style.widows = 2; | |
| 175 | |
| 176 markTopLine("test5", 1, 1); | |
| 177 markBottomLine("test5", 2, 2); // This line should not move - protected by o
rphaning. | |
| 178 markTopLine("test5", 2, 3); // This line won't be un-widowed - blocked by or
phaning. | |
| 179 | |
| 180 testIsFirstInRegion("test5", 1, 1); | |
| 181 testIsFirstInRegion("test5", 2, 3); | |
| 182 | |
| 183 container = createTestContainer("test6", "Ridiculous values", [7, 7, 7, 7]); | |
| 184 container.style.orphans = 100; | |
| 185 container.style.widows = 100; | |
| 186 | |
| 187 markTopLine("test6", 1, 1); | |
| 188 markBottomLine("test6", 1, 7); // Orphan break happens here. | |
| 189 markTopLine("test6", 2, 1); // Adopted. | |
| 190 markBottomLine("test6", 2, 7); // Orphan break. | |
| 191 markTopLine("test6", 3, 1); // Adopted. | |
| 192 | |
| 193 testIsFirstInRegion("test6", 1, 1); | |
| 194 testIsFirstInRegion("test6", 2, 1); | |
| 195 testIsFirstInRegion("test6", 3, 1); | |
| 196 | |
| 197 if (window.testRunner) { | |
| 198 // Hide all the containers and leave just the test results for text outp
ut. | |
| 199 document.body.className = "hide-containers"; | |
| 200 } | |
| 201 | |
| 202 isSuccessfullyParsed(); | |
| 203 } | |
| 204 | |
| 205 window.addEventListener("load", runTest, false); | |
| 206 </script> | |
| 207 </head> | |
| 208 <body> | |
| 209 </body> | |
| 210 </html> | |
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Chromium Code Reviews
Issue 159933010:
Remove everything region-specific from LayoutTests. (Closed)
Base URL: https://chromium.googlesource.com/chromium/blink.git@master