scratchfoundation/paper.js
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Add keepalive attribute to canvas to tag that controls wether it animates in background in emulated requestAnimationFrame() function, and use it in all example files.

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This commit is contained in:
Jürg Lehni 2011-05-14 13:04:02 +03:00
parent a775e66632
commit 3feb45addc
31 changed files with 60 additions and 77 deletions
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2
examples/Animated/AnimatedStar.html
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@ -52,5 +52,5 @@
</script>
</head>
<body>
<canvas id='canvas' resize></canvas>
<canvas id="canvas" resize keepalive="true"></canvas>
</body>

2
examples/Animated/Extruded.html
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@ -70,5 +70,5 @@
</script>
</head>
<body>
<canvas id='canvas' resize></canvas>
<canvas id="canvas" resize keepalive="true"></canvas>
</body>

2
examples/Animated/Flock.html
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@ -300,5 +300,5 @@
</style>
</head>
<body>
<canvas id='canvas' resize></canvas>
<canvas id="canvas" resize keepalive="true"></canvas>
</body>

2
examples/Animated/Lines.html
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@ -47,5 +47,5 @@
</script>
</head>
<body style='background-color:black'>
<canvas id='canvas' resize></canvas>
<canvas id="canvas" resize keepalive="true"></canvas>
</body>

2
examples/Animated/RadialRainbows.html
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@ -78,5 +78,5 @@
</script>
</head>
<body>
<canvas id='canvas' resize></canvas>
<canvas id="canvas" resize keepalive="true"></canvas>
</body>

4
examples/Animated/Raster.html
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File diff suppressed because one or more lines are too long

2
examples/Animated/RoundedRectangles.html
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@ -44,5 +44,5 @@
</script>
</head>
<body>
<canvas id='canvas' resize></canvas>
<canvas id="canvas" resize keepalive="true"></canvas>
</body>

2
examples/Animated/Smoothing.html
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@ -71,5 +71,5 @@
</script>
</head>
<body>
<canvas id='canvas' resize></canvas>
<canvas id="canvas" resize keepalive="true"></canvas>
</body>

2
examples/Scripts/Arcs.html
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@ -27,5 +27,5 @@
</script>
</head>
<body>
<canvas id='canvas' resize></canvas>
<canvas id="canvas" resize keepalive="true"></canvas>
</body>

2
examples/Scripts/BouncingBalls.html
View file

@ -82,5 +82,5 @@
</head>
<body>
<p>Click to add circles:</p>
<canvas id='canvas' resize stats></canvas>
<canvas id="canvas" resize stats keepalive="true"></canvas>
</body>

2
examples/Scripts/Chain.html
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@ -42,5 +42,5 @@
</script>
</head>
<body style='background-color: black'>
<canvas id='canvas' resize></canvas>
<canvas id="canvas" resize keepalive="true"></canvas>
</body>

2
examples/Scripts/Circle.html
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@ -15,5 +15,5 @@
</script>
</head>
<body>
<canvas id='canvas' resize></canvas>
<canvas id="canvas" resize keepalive="true"></canvas>
</body>

2
examples/Scripts/CurveTimeParametrization.html
View file

@ -43,5 +43,5 @@
</script>
</head>
<body>
<canvas id='canvas' resize></canvas>
<canvas id="canvas" resize keepalive="true"></canvas>
</body>

2
examples/Scripts/Letter.html
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@ -29,5 +29,5 @@
</script>
</head>
<body>
<canvas id='canvas' resize></canvas>
<canvas id="canvas" resize keepalive="true"></canvas>
</body>

4
examples/Scripts/RotationRaster.html
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File diff suppressed because one or more lines are too long

2
examples/Scripts/RoundRectangle.html
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@ -23,5 +23,5 @@
</script>
</head>
<body>
<canvas id='canvas' resize></canvas>
<canvas id="canvas" resize keepalive="true"></canvas>
</body>

2
examples/Scripts/StrokeBounds.html
View file

@ -92,5 +92,5 @@
</script>
</head>
<body>
<canvas id='canvas' resize></canvas>
<canvas id="canvas" resize keepalive="true"></canvas>
</body>

2
examples/Tools/BezierTool.html
View file

@ -81,5 +81,5 @@
Drag segment handles and points to manipulate them.
Close the path to start a new one.
</p>
<canvas id='canvas' resize></canvas>
<canvas id="canvas" resize keepalive="true"></canvas>
</body>

2
examples/Tools/Circles.html
View file

@ -26,5 +26,5 @@
</script>
</head>
<body>
<canvas id='canvas' resize></canvas>
<canvas id="canvas" resize keepalive="true"></canvas>
</body>

2
examples/Tools/Clouds.html
View file

@ -31,5 +31,5 @@
</script>
</head>
<body>
<canvas id='canvas' resize></canvas>
<canvas id="canvas" resize keepalive="true"></canvas>
</body>

2
examples/Tools/Dripping Brush.html
View file

@ -68,5 +68,5 @@
</script>
</head>
<body>
<canvas id='canvas' resize></canvas>
<canvas id="canvas" resize keepalive="true"></canvas>
</body>

2
examples/Tools/Fancy Brush.html
View file

@ -78,5 +78,5 @@
</script>
</head>
<body>
<canvas id='canvas' resize></canvas>
<canvas id="canvas" resize keepalive="true"></canvas>
</body>

2
examples/Tools/Grid.html
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@ -40,5 +40,5 @@
</script>
</head>
<body>
<canvas id='canvas' resize></canvas>
<canvas id="canvas" resize keepalive="true"></canvas>
</body>

2
examples/Tools/MetaBalls.html
View file

@ -113,5 +113,5 @@
</script>
</head>
<body>
<canvas id='canvas' resize></canvas>
<canvas id="canvas" resize keepalive="true"></canvas>
</body>

2
examples/Tools/MultiLines.html
View file

@ -40,5 +40,5 @@
</script>
</head>
<body>
<canvas id='canvas' resize></canvas>
<canvas id="canvas" resize keepalive="true"></canvas>
</body>

2
examples/Tools/SquareRounded.html
View file

@ -78,5 +78,5 @@
</script>
</head>
<body>
<canvas id='canvas' resize></canvas>
<canvas id="canvas" resize keepalive="true"></canvas>
</body>

2
examples/Tools/Stars.html
View file

@ -26,5 +26,5 @@
</script>
</head>
<body>
<canvas id='canvas' resize></canvas>
<canvas id="canvas" resize keepalive="true"></canvas>
</body>

2
examples/Tools/Wave.html
View file

@ -44,5 +44,5 @@
</script>
</head>
<body>
<canvas id='canvas' resize></canvas>
<canvas id="canvas" resize keepalive="true"></canvas>
</body>

2
examples/Tools/Worm Farm.html
View file

@ -84,5 +84,5 @@
</script>
</head>
<body>
<canvas id='canvas' resize></canvas>
<canvas id="canvas" resize keepalive="true"></canvas>
</body>

68
src/browser/DomEvent.js
View file

@ -99,52 +99,42 @@ DomEvent.requestAnimationFrame = new function() {
// So we need to fake it. Define helper functions first:
var callbacks = [],
fastRate = 1000 / 60,
slowRate = 1000,
focused = true,
timer;
// Installs interval timer that checks all callbacks. This results in much
// faster animations than repeatedly installing timout timers.
function setTimer(timeout) {
window.clearInterval(timer);
timer = window.setInterval(function() {
// Checks all installed callbacks for element visibility and execute
// if needed.
if (!focused)
return;
for (var i = callbacks.length - 1; i >= 0; i--) {
var entry = callbacks[i],
func = entry[0],
element = entry[1];
if (!element || DomElement.isVisible(element)) {
// Handle callback and remove it from callbacks list.
callbacks.splice(i, 1);
func(+new Date);
}
}
}, timeout);
}
if (!paper.debug) {
DomEvent.add(window, {
focus: function() {
focused = true;
// Switch to falst checkCallback calls while window is focused.
timer && setTimer(fastRate);
},
blur: function() {
focused = false;
// Switch to slow checkCallback calls while window is blured.
timer && setTimer(slowRate);
}
});
}
DomEvent.add(window, {
focus: function() {
focused = true;
},
blur: function() {
focused = false;
}
});
return function(callback, element) {
// See if we can handle natively first
if (request)
return request(callback, element);
// If not, do the callback handling ourself:
callbacks.push([callback, element]);
!timer && setTimer(fastRate);
if (!timer) {
// Installs interval timer that checks all callbacks. This results
// in faster animations than repeatedly installing timout timers.
timer = window.setInterval(function() {
// Checks all installed callbacks for element visibility and
// execute if needed.
for (var i = callbacks.length - 1; i >= 0; i--) {
var entry = callbacks[i],
func = entry[0],
element = entry[1];
if (!element || element.getAttribute('keepalive') == 'true'
|| focused && DomElement.isVisible(element)) {
// Handle callback and remove it from callbacks list.
callbacks.splice(i, 1);
func(+new Date);
}
}
}, 1000 / 60);
}
};
};

7
src/load.js
View file

@ -108,12 +108,5 @@ if (window.tests) {
for (var i = 0; i < sources.length; i++) {
document.write('<script type="text/javascript" src="' + (window.root || '')
+ sources[i] + '"></script>');
if (sources[i] === 'src/paper.js') {
// Activate paper.debug for code loaded through load.js, as we're in
// development mode.
document.write('<script type="text/javascript">'
+ 'paper.debug = false;'
+ '</script>');
}
}