| /* |
| * Copyright 2010 Google Inc. |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); you may not |
| * use this file except in compliance with the License. You may obtain a copy of |
| * the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT |
| * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the |
| * License for the specific language governing permissions and limitations under |
| * the License. |
| */ |
| package com.google.gwt.dom.client; |
| |
| import com.google.gwt.canvas.dom.client.Context; |
| import com.google.gwt.canvas.dom.client.Context2d; |
| |
| /** |
| * Canvas element. |
| * |
| * @see <a href="http://www.w3.org/TR/html5/#canvas">W3C HTML 5 Specification</a> |
| */ |
| @TagName(CanvasElement.TAG) |
| public class CanvasElement extends Element { |
| |
| /** |
| * The tag for this element. |
| */ |
| public static final String TAG = "canvas"; |
| |
| protected CanvasElement() { |
| } |
| |
| /** |
| * Gets the rendering context that may be used to draw on this canvas. |
| * |
| * @param contextId the context id as a String |
| * @return the canvas rendering context |
| */ |
| public final native Context getContext(String contextId) /*-{ |
| return this.getContext(contextId); |
| }-*/; |
| |
| /** |
| * Returns a 2D rendering context. |
| * |
| * This is a convenience method, see {@link #getContext(String)}. |
| * |
| * @return a 2D canvas rendering context |
| */ |
| public final native Context2d getContext2d() /*-{ |
| return this.getContext(@com.google.gwt.canvas.dom.client.Context2d::CONTEXT_ID); |
| }-*/; |
| |
| /** |
| * Gets the height of the canvas. |
| * |
| * @return the height, in pixels |
| * @see #setHeight(int) |
| */ |
| public final native int getHeight() /*-{ |
| return this.height; |
| }-*/; |
| |
| /** |
| * Gets the width of the canvas. |
| * |
| * @return the width, in pixels |
| * @see #setWidth(int) |
| */ |
| public final native int getWidth() /*-{ |
| return this.width; |
| }-*/; |
| |
| /** |
| * Sets the height of the canvas. |
| * |
| * @param height the height, in pixels |
| * @see #getHeight() |
| */ |
| public final native void setHeight(int height) /*-{ |
| this.height = height; |
| }-*/; |
| |
| /** |
| * Sets the width of the canvas. |
| * |
| * @param width the width, in pixels |
| * @see #getWidth() |
| */ |
| public final native void setWidth(int width) /*-{ |
| this.width = width; |
| }-*/; |
| |
| /** |
| * Returns a data URL for the current content of the canvas element. |
| * |
| * @return a data URL for the current content of this element. |
| */ |
| public final native String toDataUrl() /*-{ |
| return this.toDataURL(); |
| }-*/; |
| |
| /** |
| * Returns a data URL for the current content of the canvas element, with a specified type. |
| * |
| * @param type the type of the data url, e.g., image/jpeg or image/png. |
| * @return a data URL for the current content of this element with the specified type. |
| */ |
| public final native String toDataUrl(String type) /*-{ |
| return this.toDataURL(type); |
| }-*/; |
| } |