com.google.gwt.html5.client.CanvasElement.java Source code

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Here is the source code for com.google.gwt.html5.client.CanvasElement.java

Source

package com.google.gwt.html5.client;

import com.google.gwt.dom.client.Element;
import com.googlecode.gwtgl.binding.WebGLContextAttributes;
import com.google.gwt.webgl.client.WebGLRenderingContext;

public class CanvasElement extends Element {

    protected CanvasElement() {
    }

    public final native CanvasRenderingContext2D getContext2D() /*-{
                                                                return this.getContext("2d");
                                                                }-*/;

    public final WebGLRenderingContext getContextWebGL() {
        return getContextWebGL(WebGLContextAttributes.create());
    }

    /**
     * Returns a WebGL context for the given canvas element. Returns null if no 3d
     * context is available.
     */
    public final native WebGLRenderingContext getContextWebGL(WebGLContextAttributes attributes) /*-{
                                                                                                 var names = ["experimental-webgl", "webgl", "moz-webgl", "webkit-webgl", "webkit-3d"];
                                                                                                 for (var i = 0; i < names.length; i++) {
                                                                                                 try {
                                                                                                 var ctx = this.getContext(names[i], attributes);
                                                                                                 if (ctx != null) {
                                                                                                 // Hook for the semi-standard WebGLDebugUtils script.
                                                                                                 if ($wnd.WebGLDebugUtils) {
                                                                                                 return $wnd.WebGLDebugUtils.makeDebugContext(ctx);
                                                                                                 }
                                                                                                 return ctx;
                                                                                                 }
                                                                                                 } catch(e) {
                                                                                                 }
                                                                                                 }
                                                                                                 return null;
                                                                                                 }-*/;

    public final native int getHeight() /*-{
                                        return this.height;
                                        }-*/;

    public final native int getWidth() /*-{
                                       return this.width;
                                       }-*/;

    public final native boolean isSupported() /*-{
                                              return typeof this.getContext != "undefined";
                                              }-*/;

    public final native void setHeight(int height) /*-{
                                                   this.height = height;
                                                   }-*/;

    public final native void setWidth(int width) /*-{
                                                 this.width = width;
                                                 }-*/;

    public final native String toDataURL() /*-{
                                           return this.toDataURL();
                                           }-*/;

    public final native String toDataURL(String mimeType) /*-{
                                                          return this.toDataURL(mimeType);
                                                          }-*/;
}