136 lines
4.4 KiB
HTML
136 lines
4.4 KiB
HTML
<!DOCTYPE html>
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<html xmlns="http://www.w3.org/1999/xhtml">
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<head>
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<title>Cursor Change test</title>
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<meta charset="UTF-8">
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<!--
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<script type='text/javascript'
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src='http://getfirebug.com/releases/lite/1.2/firebug-lite-compressed.js'></script>
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-->
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<script src="include/util.js"></script>
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<script src="include/webutil.js"></script>
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<script src="include/base64.js"></script>
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<script src="include/canvas.js"></script>
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</head>
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<body>
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<h1>Roll over the buttons to test cursors</h1>
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<br>
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<input id=button1 type="button" value="Cursor from file (smiley face)">
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<input id=button2 type="button" value="Data URI cursor (crosshair)">
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<br>
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<br>
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<br>
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Debug:<br>
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<textarea id="debug" style="font-size: 9px;" cols=80 rows=25></textarea>
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<br>
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<br>
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<canvas id="testcanvas" width="100px" height="20px">
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Canvas not supported.
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</canvas>
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</body>
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<script>
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function debug(str) {
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console.log(str);
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cell = $D('debug');
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cell.innerHTML += str + "\n";
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cell.scrollTop = cell.scrollHeight;
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}
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function makeCursor() {
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var arr = [], x, y, w = 32, h = 32, hx = 16, hy = 16;
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var IHDRsz = 40;
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var ANDsz = w * h * 4;
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var XORsz = Math.ceil( (w * h) / 8.0 );
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// Push multi-byte little-endian values
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arr.push16le = function (num) {
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this.push((num ) & 0xFF,
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(num >> 8) & 0xFF );
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};
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arr.push32le = function (num) {
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this.push((num ) & 0xFF,
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(num >> 8) & 0xFF,
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(num >> 16) & 0xFF,
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(num >> 24) & 0xFF );
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};
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// Main header
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arr.push16le(0); // Reserved
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arr.push16le(2); // .CUR type
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arr.push16le(1); // Number of images, 1 for non-animated arr
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// Cursor #1
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arr.push(w); // width
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arr.push(h); // height
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arr.push(0); // colors, 0 -> true-color
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arr.push(0); // reserved
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arr.push16le(hx); // hotspot x coordinate
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arr.push16le(hy); // hotspot y coordinate
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arr.push32le(IHDRsz + XORsz + ANDsz); // cursor data byte size
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arr.push32le(22); // offset of cursor data in the file
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// Infoheader for Cursor #1
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arr.push32le(IHDRsz); // Infoheader size
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arr.push32le(w); // Cursor width
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arr.push32le(h*2); // XOR+AND height
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arr.push16le(1); // number of planes
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arr.push16le(32); // bits per pixel
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arr.push32le(0); // type of compression
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arr.push32le(XORsz + ANDsz); // Size of Image
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arr.push32le(0);
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arr.push32le(0);
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arr.push32le(0);
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arr.push32le(0);
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// XOR/color data
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for (y = h-1; y >= 0; y--) {
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for (x = 0; x < w; x++) {
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//if ((x === hx) || (y === (h-hy-1))) {
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if ((x === hx) || (y === hy)) {
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arr.push(0xe0); // blue
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arr.push(0x00); // green
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arr.push(0x00); // red
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arr.push(0xff); // alpha
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} else {
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arr.push(0x05); // blue
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arr.push(0xe6); // green
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arr.push(0x00); // red
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arr.push(0x80); // alpha
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}
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}
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}
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// AND/bitmask data (seems to be ignored)
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for (y = 0; y < h; y++) {
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for (x = 0; x < Math.ceil(w / 8); x++) {
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arr.push(0x00);
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}
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}
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debug("cursor generated");
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return arr;
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}
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window.onload = function() {
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debug("onload");
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var canvas, cross, cursor, cursor64;
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canvas = new Canvas({'target' : $D("testcanvas")});
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debug("canvas indicates Data URI cursor support is: " + canvas.get_cursor_uri());
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$D('button1').style.cursor="url(face.png), default";
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cursor = makeCursor();
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cursor64 = Base64.encode(cursor);
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//debug("cursor: " + cursor.slice(0,100) + " (" + cursor.length + ")");
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//debug("cursor64: " + cursor64.slice(0,100) + " (" + cursor64.length + ")");
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$D('button2').style.cursor="url(data:image/x-icon;base64," + cursor64 + "), default";
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debug("onload complete");
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}
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</script>
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