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comparison: layout/base/tests/test_maxLineBoxWidth.html
layout/base/tests/test_maxLineBoxWidth.html
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| 1 <!DOCTYPE HTML> | |
| 2 <html> | |
| 3 <!-- | |
| 4 https://bugzilla.mozilla.org/show_bug.cgi?id=780258 | |
| 5 --> | |
| 6 <head> | |
| 7 <meta charset="utf-8"> | |
| 8 <title>Test for Bug 780258</title> | |
| 9 <script type="text/javascript" src="/tests/SimpleTest/SimpleTest.js"></script> | |
| 10 <script type="text/javascript" src="/tests/SimpleTest/WindowSnapshot.js"></script> | |
| 11 <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css" /> | |
| 12 <style> | |
| 13 p { | |
| 14 margin-bottom: 30px; | |
| 15 } | |
| 16 | |
| 17 .leftPadd { | |
| 18 padding-left: 100px; | |
| 19 } | |
| 20 | |
| 21 #container { | |
| 22 width: 200px; | |
| 23 } | |
| 24 | |
| 25 #box { | |
| 26 position: absolute; | |
| 27 height: 600px; | |
| 28 width: 200px; | |
| 29 border: 1px solid blue; | |
| 30 } | |
| 31 | |
| 32 #constrained { | |
| 33 display: none; | |
| 34 border: 1px solid red; | |
| 35 height: 200px; | |
| 36 width: 300px; | |
| 37 } | |
| 38 </style> | |
| 39 </head> | |
| 40 <body> | |
| 41 <a target="_blank" href="https://bugzilla.mozilla.org/show_bug.cgi?id=780258">Mozilla Bug 780258</a> | |
| 42 <p id="display"></p> | |
| 43 | |
| 44 <div id="content" style="display: none"> | |
| 45 <div id="box"> </div> | |
| 46 <div id="container"> | |
| 47 <p>All of this text should be completely contained | |
| 48 within the blue box. | |
| 49 <p>I once knew a man, showed me the sleight of hand. | |
| 50 In the blink of an eye he danced across the strings. | |
| 51 He played a song I've never heard; poignant and absurd; | |
| 52 To this day, it leaves me wondering. | |
| 53 <p>Don't let tomorrow find you wishin'. | |
| 54 Boy, you've got a mission. | |
| 55 Shake it, rattle, and roll. | |
| 56 Now, just use your intuition. | |
| 57 You'll get less competition | |
| 58 from the clock up on the wall. | |
| 59 <p>You are what you are. | |
| 60 You dream what you dream. | |
| 61 Play on your blue guitar for me. | |
| 62 </div> | |
| 63 <div id="constrained"> | |
| 64 <p>This text should not apply the max line box width, since it exists within a constrained height block. This is used for limiting the reflow-on-zoom feature for constrained height blocks, since otherwise they could overflow into an element later in the document, or potentially have their text cut off vertically. | |
| 65 </div> | |
| 66 </div> | |
| 67 <pre id="test"> | |
| 68 <script type="application/javascript"> | |
| 69 /** Test for Bug 780258 and Bug 803211 **/ | |
| 70 | |
| 71 var gNarrowerContentSnap; | |
| 72 var gWideContentSnap; | |
| 73 var gFirstBlankSnap; | |
| 74 var gUnchangedContentSnap; | |
| 75 var gIncorrectContentSnap; | |
| 76 var gCorrectContentSnap; | |
| 77 | |
| 78 function setupFirstTest() { | |
| 79 gFirstBlankSnap = snapshotWindow(window); | |
| 80 | |
| 81 // Display our content. | |
| 82 document.getElementById('content').style.display = 'block'; | |
| 83 | |
| 84 // Take a snapshot. | |
| 85 gUnchangedContentSnap = snapshotWindow(window); | |
| 86 } | |
| 87 | |
| 88 function performFirstTest() { | |
| 89 setupFirstTest(); | |
| 90 // Verify this isn't the same as the blank snapshot. | |
| 91 var result = compareSnapshots(gFirstBlankSnap, gUnchangedContentSnap, false); | |
| 92 ok(result[0], "content should appear different than blank page"); | |
| 93 | |
| 94 // Set container width to 350px. | |
| 95 document.getElementById('container').style.width = '350px'; | |
| 96 | |
| 97 // Take a snapshot. | |
| 98 gIncorrectContentSnap = snapshotWindow(window); | |
| 99 | |
| 100 // Verify this is NOT the same as the first content snapshot. | |
| 101 result = compareSnapshots(gUnchangedContentSnap, gIncorrectContentSnap, false); | |
| 102 ok(result[0], "unchanged content should be different than changed content"); | |
| 103 | |
| 104 // Run the max line box width change. | |
| 105 SpecialPowers.setMaxLineBoxWidth(window, 200); | |
| 106 | |
| 107 // Take snapshot. | |
| 108 gCorrectContentSnap = snapshotWindow(window); | |
| 109 | |
| 110 // Compare snapshots. | |
| 111 result = compareSnapshots(gUnchangedContentSnap, gCorrectContentSnap, true); | |
| 112 ok(result[0], "unchanged content should be the same as corrected content"); | |
| 113 } | |
| 114 | |
| 115 function setupSecondTest() { | |
| 116 var elements = document.getElementById("container").getElementsByTagName("p"); | |
| 117 for (var i = 0; i < elements.length; i++) { | |
| 118 elements[i].setAttribute("class", "leftPadd"); | |
| 119 } | |
| 120 | |
| 121 document.getElementById("box").style.paddingLeft = "100px"; | |
| 122 | |
| 123 document.getElementById("container").style.width = "300px"; | |
| 124 } | |
| 125 | |
| 126 // Another test to verify that the max line box width is | |
| 127 // actually forcing the WIDTH of the line boxes, and not | |
| 128 // the absolute right edge to be set | |
| 129 function performSecondTest() { | |
| 130 setupSecondTest(); | |
| 131 SpecialPowers.setMaxLineBoxWidth(window, 2000); | |
| 132 | |
| 133 // Take a snapshot with a max line box width of 200px; | |
| 134 gWideContentSnap = snapshotWindow(window); | |
| 135 | |
| 136 SpecialPowers.setMaxLineBoxWidth(window, 200); | |
| 137 | |
| 138 // Take a snapshot with the new max line box width | |
| 139 gNarrowerContentSnap = snapshotWindow(window); | |
| 140 | |
| 141 // Compare snapshots. | |
| 142 result = compareSnapshots(gNarrowerContentSnap, gWideContentSnap, true); | |
| 143 ok(result[0], "content with a max line box width of 2000px and content with" + | |
| 144 " a max line box width of 200px should be the same with a 100px left padding"); | |
| 145 } | |
| 146 | |
| 147 function setupThirdTest() { | |
| 148 document.getElementById('container').style.display = 'none'; | |
| 149 document.getElementById('box').style.display = 'none'; | |
| 150 document.getElementById('constrained').style.display = 'block'; | |
| 151 } | |
| 152 | |
| 153 function performThirdTest() { | |
| 154 setupThirdTest(); | |
| 155 | |
| 156 // Take a snapshot of what the content looks like before. | |
| 157 gCorrectContentSnap = snapshotWindow(window); | |
| 158 | |
| 159 // Apply a max line box width. | |
| 160 SpecialPowers.setMaxLineBoxWidth(window, 200); | |
| 161 | |
| 162 // Take another snapshot. | |
| 163 gNarrowerContentSnap = snapshotWindow(window); | |
| 164 | |
| 165 // Verify the max line box width change hasn't changed anything. | |
| 166 result = compareSnapshots(gNarrowerContentSnap, gCorrectContentSnap, true); | |
| 167 ok(result[0], "constrained height elements should not be subjected to max line box width adjustments"); | |
| 168 } | |
| 169 | |
| 170 SimpleTest.waitForExplicitFinish(); | |
| 171 | |
| 172 // The first test verifies that the max line box width | |
| 173 // actually causes a change in page layout. | |
| 174 performFirstTest(); | |
| 175 | |
| 176 // The second test verifies that the max line box width | |
| 177 // is actually measuring width, and not position of | |
| 178 // the left/right edges of the line box. | |
| 179 performSecondTest(); | |
| 180 | |
| 181 // The third test verifies that the max line box width | |
| 182 // does not have any effect on constrained height elements. | |
| 183 performThirdTest(); | |
| 184 | |
| 185 // Finish the test. | |
| 186 SimpleTest.finish(); | |
| 187 | |
| 188 </script> | |
| 189 </pre> | |
| 190 </body> | |
| 191 </html> |
