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#5329 Animation duration is not consistent across browsers #5331

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merged 4 commits into from Jan 2, 2019
Merged

#5329 Animation duration is not consistent across browsers #5331

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7587971
#5329 Animation duration is not consistent across browsers
s-yakymuk Mar 11, 2018
5511501
Merge branch 'master' of https://github.com/chartjs/Chart.js into ani…
s-yakymuk Apr 3, 2018
c09cd86
Simplifying animation conditional check
s-yakymuk Apr 3, 2018
3132e33
Simplifying condinional check #2
s-yakymuk Apr 3, 2018
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21 changes: 5 additions & 16 deletions src/core/core.animations.js
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Expand Up @@ -14,9 +14,7 @@ defaults._set('global', {
});

module.exports = {
frameDuration: 17,
animations: [],
dropFrames: 0,
request: null,

/**
Expand All @@ -30,6 +28,8 @@ module.exports = {
var i, ilen;

animation.chart = chart;
animation.startTime = Date.now();
animation.duration = duration;

if (!lazy) {
chart.animating = true;
Expand Down Expand Up @@ -79,19 +79,8 @@ module.exports = {
*/
startDigest: function() {
var me = this;
var startTime = Date.now();
var framesToDrop = 0;

if (me.dropFrames > 1) {
framesToDrop = Math.floor(me.dropFrames);
me.dropFrames = me.dropFrames % 1;
}

me.advance(1 + framesToDrop);

var endTime = Date.now();

me.dropFrames += (endTime - startTime) / me.frameDuration;
me.advance();

// Do we have more stuff to animate?
if (me.animations.length > 0) {
Expand All @@ -102,7 +91,7 @@ module.exports = {
/**
* @private
*/
advance: function(count) {
advance: function() {
var animations = this.animations;
var animation, chart;
var i = 0;
Expand All @@ -111,7 +100,7 @@ module.exports = {
animation = animations[i];
chart = animation.chart;

animation.currentStep = (animation.currentStep || 0) + count;
animation.currentStep = Math.floor((Date.now() - animation.startTime) / animation.duration * animation.numSteps);
animation.currentStep = Math.min(animation.currentStep, animation.numSteps);

helpers.callback(animation.render, [chart, animation], chart);
Expand Down
10 changes: 6 additions & 4 deletions src/core/core.controller.js
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Expand Up @@ -509,22 +509,24 @@ module.exports = function(Chart) {
};
}

var duration = config.duration;
var animationOptions = me.options.animation;
var duration = typeof config.duration !== 'undefined'
? config.duration
: animationOptions && animationOptions.duration;
var lazy = config.lazy;

if (plugins.notify(me, 'beforeRender') === false) {
return;
}

var animationOptions = me.options.animation;
var onComplete = function(animation) {
plugins.notify(me, 'afterRender');
helpers.callback(animationOptions && animationOptions.onComplete, [animation], me);
};

if (animationOptions && ((typeof duration !== 'undefined' && duration !== 0) || (typeof duration === 'undefined' && animationOptions.duration !== 0))) {
if (animationOptions && duration) {
var animation = new Animation({
numSteps: (duration || animationOptions.duration) / 16.66, // 60 fps
numSteps: duration / 16.66, // 60 fps
easing: config.easing || animationOptions.easing,

render: function(chart, animationObject) {
Expand Down
2 changes: 1 addition & 1 deletion test/specs/core.controller.tests.js
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Expand Up @@ -1134,7 +1134,7 @@ describe('Chart', function() {
expect(this.addAnimationSpy).toHaveBeenCalledWith(
this.chart,
jasmine.objectContaining({easing: 'linear'}),
undefined,
500,
undefined
);
});
Expand Down