| /* |
| |
| Licensed to the Apache Software Foundation (ASF) under one or more |
| contributor license agreements. See the NOTICE file distributed with |
| this work for additional information regarding copyright ownership. |
| The ASF licenses this file to You 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 org.apache.batik.gvt; |
| |
| import java.awt.Graphics2D; |
| import java.awt.Paint; |
| import java.awt.geom.AffineTransform; |
| import java.awt.geom.NoninvertibleTransformException; |
| |
| /** |
| * The graphics node container with a background color. |
| * |
| * @author <a href="mailto:Thierry.Kormann@sophia.inria.fr">Thierry Kormann</a> |
| * @version $Id$ |
| */ |
| public class CanvasGraphicsNode extends CompositeGraphicsNode { |
| |
| /** |
| * This is the position transform for this graphics node. |
| * This is needed because getCTM returns the transform |
| * to the viewport coordinate system which is after viewing but |
| * before positioning. |
| */ |
| protected AffineTransform positionTransform; |
| /** |
| * This is the viewing transform for this graphics node. |
| * This is needed because getCTM returns the transform |
| * to the viewport coordinate system which is after viewing but |
| * before positioning. |
| */ |
| protected AffineTransform viewingTransform; |
| |
| /** |
| * The background of this canvas graphics node. |
| */ |
| protected Paint backgroundPaint; |
| |
| /** |
| * Constructs a new empty <code>CanvasGraphicsNode</code>. |
| */ |
| public CanvasGraphicsNode() {} |
| |
| // |
| // Properties methods |
| // |
| |
| /** |
| * Sets the background paint of this canvas graphics node. |
| * |
| * @param newBackgroundPaint the new background paint |
| */ |
| public void setBackgroundPaint(Paint newBackgroundPaint) { |
| this.backgroundPaint = newBackgroundPaint; |
| } |
| |
| /** |
| * Returns the background paint of this canvas graphics node. |
| */ |
| public Paint getBackgroundPaint() { |
| return backgroundPaint; |
| } |
| |
| public void setPositionTransform(AffineTransform at) { |
| fireGraphicsNodeChangeStarted(); |
| invalidateGeometryCache(); |
| this.positionTransform = at; |
| if (positionTransform != null) { |
| transform = new AffineTransform(positionTransform); |
| if (viewingTransform != null) |
| transform.concatenate(viewingTransform); |
| } else if (viewingTransform != null) |
| transform = new AffineTransform(viewingTransform); |
| else |
| transform = new AffineTransform(); |
| |
| if (transform.getDeterminant() != 0){ |
| try{ |
| inverseTransform = transform.createInverse(); |
| }catch(NoninvertibleTransformException e){ |
| // Should never happen. |
| throw new RuntimeException( e.getMessage() ); |
| } |
| } |
| else{ |
| // The transform is not invertible. Use the same |
| // transform. |
| inverseTransform = transform; |
| } |
| fireGraphicsNodeChangeCompleted(); |
| } |
| |
| public AffineTransform getPositionTransform() { |
| return positionTransform; |
| } |
| |
| public void setViewingTransform(AffineTransform at) { |
| fireGraphicsNodeChangeStarted(); |
| invalidateGeometryCache(); |
| this.viewingTransform = at; |
| if (positionTransform != null) { |
| transform = new AffineTransform(positionTransform); |
| if (viewingTransform != null) |
| transform.concatenate(viewingTransform); |
| } else if (viewingTransform != null) |
| transform = new AffineTransform(viewingTransform); |
| else |
| transform = new AffineTransform(); |
| |
| if(transform.getDeterminant() != 0){ |
| try{ |
| inverseTransform = transform.createInverse(); |
| }catch(NoninvertibleTransformException e){ |
| // Should never happen. |
| throw new RuntimeException( e.getMessage() ); |
| } |
| } |
| else{ |
| // The transform is not invertible. Use the same |
| // transform. |
| inverseTransform = transform; |
| } |
| fireGraphicsNodeChangeCompleted(); |
| } |
| |
| public AffineTransform getViewingTransform() { |
| return viewingTransform; |
| } |
| |
| // |
| // Drawing methods |
| // |
| |
| /** |
| * Paints this node without applying Filter, Mask, Composite, and clip. |
| * |
| * @param g2d the Graphics2D to use |
| */ |
| public void primitivePaint(Graphics2D g2d) { |
| if (backgroundPaint != null) { |
| g2d.setPaint(backgroundPaint); |
| g2d.fill(g2d.getClip()); // Fast paint for huge background area |
| } |
| super.primitivePaint(g2d); |
| } |
| } |