So, I successfully update the image src attribute within the UIWebView page
using imageWithRederingMode:UIImageRederingModeAlwaysTemplate. However, the
image appears "unrendered" with the tint color. Why? How do I get an image
rendered in the tint color?
UIImage *image = [controller.infoIcon.image
imageWithRenderingMode:UIImageRenderingModeAlwaysTemplate];
NSString *data = [UIImagePNGRepresentation(image)
base64EncodedStringWithOptions:nil];
[webView stringByEvaluatingJavaScriptFromString:
[NSString stringWithFormat:@"%@%@%@",
@"( function() {"
@" var x = document.getElementById('infoIcon');"
@" if ( !! x ) { "
@" x.src = 'data:image/png;base64,", data, @"';"
@" }"
@"})();"
]
];
Paul
On Sep 29, 2013, at 3:10 PM, Paul Scott <psc...@skycoast.us> wrote:
> I suppose I could try using stringByEvaluatingJavaScriptFromString: to insert
> the raw template-rendered image data into the web page with the Data URI
> scheme. The images are fairly small, so that seems doable, but if there's an
> easier way, I'd choose that path.
>
> Paul
>
> On Sep 29, 2013, at 2:55 PM, Paul Scott <psc...@skycoast.us> wrote:
>
>> Now, I'm wondering if there's a way to get UIWebView to apply tint color to
>> an image URL, via some extension?
>>
>> I would like my UIWebView-based app help — which references the app's images
>> — to dynamically adopt the same tint color as the rest of the app, without
>> resorting to saving the template-rendered image to disk.
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