mirror of https://github.com/perkeep/perkeep.git
142 lines
3.8 KiB
JavaScript
142 lines
3.8 KiB
JavaScript
/*
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Copyright 2013 The Camlistore Authors
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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goog.provide('camlistore.Spinner');
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goog.require('camlistore.AnimationLoop');
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goog.require('camlistore.style');
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goog.require('goog.dom');
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goog.require('goog.events.EventHandler');
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goog.require('goog.style');
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goog.require('goog.math.Coordinate');
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goog.require('goog.math.Size');
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goog.require('goog.ui.Control');
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/**
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* An indeterminite progress meter using the safe icon.
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* @param {goog.dom.DomHelper} domHelper
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*/
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camlistore.Spinner = function(domHelper) {
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goog.base(this, null, this.dom_);
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/**
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* @type {goog.dom.DomHelper}
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* @private
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*/
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this.dom_ = domHelper;
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/**
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* @type {goog.events.EventHandler}
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* @private
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*/
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this.eh_ = new goog.events.EventHandler(this);
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/**
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* @type {camlistore.AnimationLoop}
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* @private
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*/
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this.animationLoop_ = new camlistore.AnimationLoop(this.dom_.getWindow());
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/**
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* @type {number}
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* @private
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*/
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this.currentRotation_ = 0;
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};
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goog.inherits(camlistore.Spinner, goog.ui.Control);
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/**
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* @type {string}
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*/
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camlistore.Spinner.prototype.backgroundImage = "safe-no-wheel.svg";
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/**
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* @type {string}
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*/
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camlistore.Spinner.prototype.foregroundImage = "safe-wheel.svg";
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/**
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* @type {number}
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*/
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camlistore.Spinner.prototype.degreesPerSecond = 500;
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/**
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* The origin the safe wheel rotates around, expressed as a fraction of the
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* image's width and height.
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*
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* @type {goog.math.Coordinate}
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* @private
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*/
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camlistore.Spinner.prototype.wheelRotationOrigin_ =
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new goog.math.Coordinate(0.37, 0.505);
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/**
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* @override
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*/
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camlistore.Spinner.prototype.createDom = function() {
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this.background_ = this.dom_.createDom('div', 'cam-spinner',
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this.dom_.createDom('div'));
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this.foreground_ = this.background_.firstChild;
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camlistore.style.setURLStyle(this.background_, 'background-image',
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this.backgroundImage);
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camlistore.style.setURLStyle(this.foreground_, 'background-image',
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this.foregroundImage);
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// TODO(aa): This will need to be configurable. Not sure how makes sense yet.
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var size = new goog.math.Size(75, 75);
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goog.style.setSize(this.background_, size);
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// We should be able to set the origin as a percentage directly, but the
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// browsers end up rounding differently, and we get less off-center spinning
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// on the whole if we set this using pixels.
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var origin = new goog.math.Coordinate(size.width, size.height);
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camlistore.style.setTransformOrigin(
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this.foreground_,
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origin.scale(this.wheelRotationOrigin_.x,
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this.wheelRotationOrigin_.y));
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this.eh_.listen(this.animationLoop_,
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camlistore.AnimationLoop.FRAME_EVENT_TYPE,
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this.updateRotation_);
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this.decorateInternal(this.background_);
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};
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camlistore.Spinner.prototype.isRunning = function() {
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return this.animationLoop_.isRunning();
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};
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camlistore.Spinner.prototype.start = function() {
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this.animationLoop_.start();
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};
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camlistore.Spinner.prototype.stop = function() {
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this.animationLoop_.stop();
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};
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/**
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* @private
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*/
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camlistore.Spinner.prototype.updateRotation_ = function(e) {
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rotation = e.delay / 1000 * this.degreesPerSecond;
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this.currentRotation_ += rotation;
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this.currentRotation_ %= 360;
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camlistore.style.setRotation(this.foreground_, this.currentRotation_);
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};
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