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76 lines
1.7 KiB
HTML
76 lines
1.7 KiB
HTML
<!DOCTYPE>
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<head>
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<style>
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body {
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border: 0px;
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margin: 0px;
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padding: 0px;
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}
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table {
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border-spacing: 0px;
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}
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</style>
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</head>
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<body>
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<div>
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<table>
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<tr>
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<td id="ul"></td>
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<td id="ur"></td>
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</tr>
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<tr>
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<td id="ll"></td>
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<td id="lr"></td>
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</tr>
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</table>
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</div>
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<script>
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var orientation = location.search.substring(1).split("&");
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var angle = parseInt(orientation[0]);
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var flip = orientation[1] == "flip" ? true : false;
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// Each id corresponds to a color.
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var ids = ["ul", "ur", "lr", "ll"];
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var colors = [
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"rgb(0, 191, 0)",
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"rgb(0, 255, 1)",
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"rgb(254, 0, 122)",
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"rgb(191, 0, 93)",
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];
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// 'Rotate' the colors according to the angle.
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colors.unshift.apply(colors, colors.splice((360 - angle) / 90, colors.length));
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// 'Flip' the colors if requested.
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if (flip) {
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var tmp = colors[0];
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colors[0] = colors[1];
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colors[1] = tmp;
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tmp = colors[2];
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colors[2] = colors[3];
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colors[3] = tmp;
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}
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// Construct a style.
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var style = "";
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if (angle == 90 || angle == 270) {
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style += "div { width: 200px; height: 100px; }\n";
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style += "td { width: 100px; height: 50px; }\n";
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} else {
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style += "div { width: 100px; height: 200px; }\n";
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style += "td { width: 50px; height: 100px; }\n";
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}
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for (var i = 0 ; i < 4 ; ++i) {
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style += "#" + ids[i] + " { background-color: " + colors[i] + "; }\n";
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}
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// Apply the style to the document.
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var sheet = document.createElement('style');
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sheet.innerHTML = style;
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document.body.appendChild(sheet);
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</script>
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</body>
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