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Added responsive option: canvas is sized to fit in parent DOM node #64

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Added responsive option: canvas is sized to fit in parent DOM node #64

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2ac4bcb
Added responsive option: canvas is sized to fit in parent DOM node if…
Jan 3, 2015
18b1e96
Made the size differ by Gauge type
Jan 5, 2015
dca2543
Max size for Donut is the min of the width and height of the parent c…
Jan 5, 2015
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3 changes: 2 additions & 1 deletion README.md
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Original file line number Diff line number Diff line change
Expand Up @@ -24,7 +24,8 @@ var opts = {
},
colorStart: '#6FADCF', // Colors
colorStop: '#8FC0DA', // just experiment with them
strokeColor: '#E0E0E0' // to see which ones work best for you
strokeColor: '#E0E0E0', // to see which ones work best for you
responsive: false // set to true if you want the gauge to scale with the parent element
};
var target = document.getElementById('foo'); // your canvas element
var gauge = new Gauge(target).setOptions(opts); // create sexy gauge!
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10 changes: 8 additions & 2 deletions dist/gauge.coffee
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Expand Up @@ -148,8 +148,7 @@ class BaseGauge extends ValueUpdater
@ctx.oBackingStorePixelRatio or
@ctx.backingStorePixelRatio or 1
@displayScale = devicePixelRatio / backingStorePixelRatio

if @displayScale != prevDisplayScale
if @options.responsive or @displayScale != prevDisplayScale
width = @canvas.G__width or @canvas.width
height = @canvas.G__height or @canvas.height
@canvas.width = width * @displayScale
Expand Down Expand Up @@ -297,6 +296,10 @@ class Gauge extends BaseGauge
@render()

setOptions: (options=null) ->
console.log(options)
if options && options.responsive
@canvas.G__width = @canvas.parentNode.clientWidth
@canvas.G__height = Math.min(@canvas.parentNode.clientHeight, @canvas.G__width/2)
super(options)
@configPercentColors()
@lineWidth = @canvas.height * (1 - @paddingBottom) * @options.lineWidth # .2 - .7
Expand Down Expand Up @@ -439,6 +442,9 @@ class BaseDonut extends BaseGauge
return (1 - @options.angle) * Math.PI + ((value - @minValue) / (@maxValue - @minValue)) * ((2 + @options.angle) - (1 - @options.angle)) * Math.PI

setOptions: (options=null) ->
if options && options.responsive
@canvas.G__width = Math.min(@canvas.parentNode.clientWidth, @canvas.parentNode.clientHeight)
@canvas.G__height = @canvas.G__width
super(options)
@lineWidth = @canvas.height * @options.lineWidth
@radius = @canvas.height / 2 - @lineWidth/2
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65 changes: 36 additions & 29 deletions dist/gauge.js
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5 changes: 3 additions & 2 deletions index.html
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Expand Up @@ -100,7 +100,8 @@ <h2 id="usage">Usage</h2>
colorStart: '<span id="opt-colorStart" class="lit">0</span>', // Colors
colorStop: '<span id="opt-colorStop" class="lit">0</span>', // just experiment with them
strokeColor: '<span id="opt-strokeColor" class="lit">0</span>', // to see which ones work best for you
generateGradient: true
generateGradient: true,
responsive: false // set to true if you want the gauge to scale with the parent element
};
var target = document.getElementById('foo'); // your canvas element
var gauge = new <span id="class-code-name" class="typ">Gauge</span>(target).setOptions(opts); // create sexy gauge!
Expand Down Expand Up @@ -367,4 +368,4 @@ <h2>Contact</h2>

</script>
</body>
</html>
</html>