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https://github.com/Jermolene/TiddlyWiki5
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86 lines
2.4 KiB
JavaScript
86 lines
2.4 KiB
JavaScript
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//--
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//-- Morpher animation
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//--
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// Animate a set of properties of an element
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//# element - the element to be moved (optional
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//# duration - duration of animation
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//# properties - an array of objects describing each property that is to be modified:
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//# format - one of:
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//# "style" for numeric styles (default)
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//# "color" for #RRGGBB format colour styles
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//# style - name of the style being animated. Includes pseudo-styles:
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//# "-tw-scrollVert" - controls vertical scrolling
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//# "-tw-scrollHoriz" - controls horizontal scrolling
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//# start - starting value to animate from
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//# end - ending value to animation from
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//# atEnd - final value (taking priority over the end value) (eg, for switching style.display)
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//# template - template for formatString() for setting the property (eg "%0em", or "#%0")
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//# callback - function to call when the animation has completed as callback(element,properties);
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function Morpher(element,duration,properties,callback)
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{
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this.element = element;
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this.duration = duration;
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this.properties = properties;
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this.startTime = new Date();
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this.endTime = Number(this.startTime) + duration;
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this.callback = callback;
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this.tick();
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return this;
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}
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Morpher.prototype.assignStyle = function(element,style,value)
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{
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switch(style) {
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case "-tw-vertScroll":
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window.scrollTo(findScrollX(),value);
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break;
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case "-tw-horizScroll":
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window.scrollTo(value,findScrollY());
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break;
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default:
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element.style[style] = value;
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break;
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}
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};
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Morpher.prototype.stop = function()
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{
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var t;
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for(t=0; t<this.properties.length; t++) {
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var p = this.properties[t];
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if(p.atEnd !== undefined) {
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this.assignStyle(this.element,p.style,p.atEnd);
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}
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}
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if(this.callback)
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this.callback(this.element,this.properties);
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};
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Morpher.prototype.tick = function()
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{
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var currTime = Number(new Date());
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var t,progress = Animator.slowInSlowOut(Math.min(1,(currTime-this.startTime)/this.duration));
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for(t=0; t<this.properties.length; t++) {
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var p = this.properties[t];
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if(p.start !== undefined && p.end !== undefined) {
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var template = p.template || "%0";
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switch(p.format) {
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case undefined:
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case "style":
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var v = p.start + (p.end-p.start) * progress;
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this.assignStyle(this.element,p.style,template.format([v]));
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break;
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case "color":
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break;
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}
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}
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}
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if(currTime >= this.endTime) {
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this.stop();
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return false;
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}
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return true;
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};
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