rwt.remote.handler.CanvasHandler.js Maven / Gradle / Ivy

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/*******************************************************************************
 * Copyright (c) 2011, 2017 EclipseSource and others.
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License v1.0
 * which accompanies this distribution, and is available at
 * http://www.eclipse.org/legal/epl-v10.html
 *
 * Contributors:
 *    EclipseSource - initial API and implementation
 ******************************************************************************/

rwt.remote.HandlerRegistry.add( "rwt.widgets.Canvas", {

  factory : function( properties ) {
    var result = new rwt.widgets.Composite();
    rwt.remote.HandlerUtil.addStatesForStyles( result, properties.style );
    result.setUserData( "isControl", true );
    rwt.remote.HandlerUtil.setParent( result, properties.parent );
    return result;
  },

  destructor : rwt.remote.HandlerUtil.getControlDestructor(),

  getDestroyableChildren : rwt.remote.HandlerUtil.getDestroyableChildrenFinder(),

  properties : rwt.remote.HandlerUtil.extendControlProperties( [
    "backgroundGradient",
    "roundedBorder",
    "clientArea"
  ] ),

  propertyHandler : rwt.remote.HandlerUtil.extendControlPropertyHandler( {
    "backgroundGradient" : rwt.remote.HandlerUtil.getBackgroundGradientHandler(),
    "roundedBorder" : rwt.remote.HandlerUtil.getRoundedBorderHandler()
  } ),

  listeners : rwt.remote.HandlerUtil.extendControlListeners( [] ),

  listenerHandler : rwt.remote.HandlerUtil.extendControlListenerHandler( {} ),

  methods: [ "addListener", "removeListener" ],

  methodHandler : rwt.remote.HandlerUtil.extendListenerMethodHandler( {} ),

  /**
   * @class RWT Scripting analoge to org.eclipse.swt.widgets.Canvas
   * @name Canvas
   * @extends Composite
   * @description The constructor is not public.
   * @since 2.2
   */
  scriptingMethods : rwt.remote.HandlerUtil.extendControlScriptingMethods(
    /** @lends Canvas.prototype */
  {

    /**
     * @description Fires a Paint event.
     * 
     *   Only ClientListener are notified, not server side listener.
     * 
     * @see SWT.Paint
     * @see Event#gc
     */
    redraw : function() {
      var gc = rwt.widgets.util.WidgetUtil.getGC( this );
      var width = this.getInnerWidth();
      var height = this.getInnerHeight();
      var fillStyle = this.getBackgroundColor();
      var strokeStyle = this.getTextColor();
      var font = null;
      if( this.getFont() ) {
        font = [
          this.getFont().getFamily(),
          this.getFont().getSize(),
          this.getFont().getBold(),
          this.getFont().getItalic()
        ];
      }
      gc.init(
        0,
        0,
        width,
        height,
        font,
        rwt.util.Colors.stringToRgb( fillStyle ? fillStyle : "#000000" ),
        rwt.util.Colors.stringToRgb( strokeStyle ? strokeStyle : "#000000" )
      );
    }
  } )


} );