On Tuesday, September 13, 2016 at 3:30:49 PM UTC+2, Kirill Prazdnikov wrote:
>
> Hi, I have the following code:
>
> public static Vec2i elementSizeToDeviceSize(Element element) {
>> float devicePixelRatio = devicePixelRatio();
>> ClientRect rect = GwtNativeUtil.getBoundingClientRect(element);
>> float x0 = (float) (rect.getLeft() * devicePixelRatio);
>> float x1 = (float) (rect.getRight() * devicePixelRatio);
>> float y0 = (float) (rect.getTop() * devicePixelRatio);
>> float y1 = (float) (rect.getBottom() * devicePixelRatio);
>>
>> return new Vec2i(Math.round(x1 - x0), Math.round(y1 - y0));
>> }
>>
>>
> GwtNativeUtil.getBoundingClientRect is native JSNI function.
>
>
> It returns
>
> public interface ClientRect extends JSObject
>
> which has
>
> @JsProperty double getLeft();
>
>
> And the GWT compiler 2.8-rc2 emits the following code:
>
>
> function hEb(a) {
>> var b, c, d, e, f;
>> b = gEb();
>> a.getBoundingClientRect();
>> c = null.hf() * b;
>> d = null.hf() * b;
>> e = null.hf() * b;
>> f = null.hf() * b;
>> return new Tvb(Oj($wnd.Math.round(d - c)), Oj($wnd.Math.round(f - e)))
>> }
>>
>>
>
>
> This code is not a valid code. Is this a bug ?
>
> The compiler did not throw an any message.
>
>
> I`m using -Dgwt.style=PRETTY
>
>
See https://github.com/gwtproject/gwt/issues/9330
You must be missing an isNative=true on ClientRect
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