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jqChart for Retina display of iPhone 4/4S
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NAKAMURA Masayuki
#1 Posted : Sunday, February 5, 2012 3:20:32 AM(UTC)
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I want to optimize the canvas which jqChart draw on for iPhone 4/4S like this:

Code:
        if (window.devicePixelRatio == 2) {
            myCanvas.setAttribute('height', window.innerHeight * 2);
            myCanvas.setAttribute('width', window.innerWidth * 2);
            ctx.scale(2, 2);
        } else {
            myCanvas.setAttribute('height', window.innerHeight);
            myCanvas.setAttribute('width', window.innerWidth);
        }


Is there any methods or properties in jqChart ?


Thanks in advance.
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Dragan
#2 Posted : Sunday, February 5, 2012 3:32:52 PM(UTC)
Rank: Advanced Member

Groups: Administrators, DataVizJavaScript, jQueryChart, jQueryDV, MvcChart, Registered
Joined: 1/3/2011(UTC)
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Hi,

You can use this code to set the width and height:

Code:
        var width = window.innerWidth;
        var height = window.innerHeight;

        if (window.devicePixelRatio == 2) {

            width *= 2;
            height *= 2;
        }

        var jqChart = $('#jqChart').jqChart({
            width: width,
            height : height, …


Currently, jqChart doesn’t provide settings for custom scaling, but if you want we can add this functionality and send you a working version.
Best Regards,
Dragan Matek
jqChart Inc.
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NAKAMURA Masayuki
#3 Posted : Sunday, February 5, 2012 6:52:57 PM(UTC)
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Hi Dragan,

Settings for custom scaling is needed for getting a clear chart in Retina display.

Now i'm using trial version,
but i'll purchase a license if you give me this functionality.


Thank you for your kindness.
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NAKAMURA Masayuki
#4 Posted : Monday, February 6, 2012 2:25:50 AM(UTC)
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P.S. Please tell me when you could have it ready.
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Dragan
#5 Posted : Monday, February 6, 2012 3:57:35 PM(UTC)
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Groups: Administrators, DataVizJavaScript, jQueryChart, jQueryDV, MvcChart, Registered
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I sent you a custom version via email.
Best Regards,
Dragan Matek
jqChart Inc.
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