Sorry, the first drawImage method was missing the context.drawImage
call.
void drawImage(Context2d context) {
context.save();
context.scale(scale, scale);
context.drawImage(imageElement, 0, 0);
context.restore();
}
On Nov 2, 2:21 pm, Thad <[email protected]> wrote:
> I believe that this is not directly GWT's problem. It's IE's problem.
> However I'll let folks know in case they want to venture down this
> road.
>
> The Context2d scaling methods are broke in IE9. Using GWT 2.3, I'm
> drawing an Image into a Canvas widget. The image is larger than the
> target, so I'm scaling it. With either of the approaches below, the
> image displays in Firefox 7.0.1, Safari 5, and Chrome 13. The image
> does **not** display in IE9.
>
> void drawImage(Context2d context) {
> context.save();
> context.scale(scale, scale);
> context.restore();
> }
>
> or
>
> void drawImage(Context2d context) {
> context.save();
> context.drawImage(imageElement, 0, 0,
> scale*(double)image.getWidth()-10,
> scale*(double)image.getHeight()-10);
> context.restore();
> }
>
> scale was computed as
>
> image = new Image(...
> image.addLoadHandler(new LoadHandler() {
> public void onLoad(LoadEvent event) {
> imageElement = (ImageElement)image.getElement().cast();
> scale = Math.min((double)width/(double)image.getWidth(),
> (double)height/(double)image.getHeight());
> scale = Math.min(scale, 1.0);
> drawImage(imageContext);
> }
> });
>
> I'll add that context.drawImage(imageElement, 0, 0, width, height)
> does work in IE, but of course depending on my image I may get a
> distorted width:height ratio.
>
> SVG is a new thing with IE9. Hopefully it will be right in IE10.
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