jdk/make/tools/swing-nimbus/classes/org/jdesktop/swingx/designer/Canvas.java - platform/libcore - Git at Google

 /*
  * Copyright 2002-2007 Sun Microsystems, Inc.  All Rights Reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
  * under the terms of the GNU General Public License version 2 only, as
  * published by the Free Software Foundation.  Sun designates this
  * particular file as subject to the "Classpath" exception as provided
  * by Sun in the LICENSE file that accompanied this code.
  *
  * This code is distributed in the hope that it will be useful, but WITHOUT
  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  * version 2 for more details (a copy is included in the LICENSE file that
  * accompanied this code).
  *
  * You should have received a copy of the GNU General Public License version
  * 2 along with this work; if not, write to the Free Software Foundation,
  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  *
  * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
  * CA 95054 USA or visit www.sun.com if you need additional information or
  * have any questions.
  */
 package org.jdesktop.swingx.designer;

 import org.jdesktop.beans.AbstractBean;
 import org.jdesktop.swingx.designer.utils.HasResources;
 import org.jdesktop.swingx.designer.utils.HasUIDefaults;
 import org.jibx.runtime.IUnmarshallingContext;

 import javax.swing.UIDefaults;
 import java.awt.AlphaComposite;
 import java.awt.Dimension;
 import java.awt.Graphics2D;
 import java.awt.Insets;
 import java.awt.RenderingHints;
 import java.awt.image.BufferedImage;
 import java.beans.PropertyChangeEvent;
 import java.beans.PropertyChangeListener;
 import java.io.File;
 import java.util.ArrayList;
 import java.util.Collection;
 import java.util.Collections;
 import java.util.Iterator;
 import java.util.List;

 /**
  * ComponentRegion
  *
  * @author Created by Jasper Potts (May 22, 2007)
  */
 public class Canvas extends AbstractBean implements LayerContainer, HasUIDefaults, HasResources {
     private Dimension size;
     /** list of all layers in the canvas, the first layer is painted on top */
     private List<Layer> layers;
     private int nextLayerNameIndex = 1;
     private BufferedImage buffer;
     private boolean isValid = false;
     private Insets stretchingInsets = null;
     private Layer workingLayer = null;
     private PropertyChangeListener layersPropertyChangeListener;
     private UIDefaults canvasUIDefaults = null;
     private transient File resourcesDir;
     private transient File imagesDir;
     private transient File templatesDir;

     // =================================================================================================================
     // Constructor

     /** Private constructor for JIBX */
     protected Canvas() {
         layersPropertyChangeListener = new PropertyChangeListener() {
             public void propertyChange(PropertyChangeEvent evt) {
                 isValid = false;
                 // pass on layer change
                 int index = layers.indexOf((Layer) evt.getSource());
                 if (index != -1) {
                     firePropertyChange("layers[" + index + "]." + evt.getPropertyName(), evt.getOldValue(),
                             evt.getNewValue());
                 }
             }
         };
     }

     public Canvas(int width, int height) {
         this();
         stretchingInsets = new Insets(1, 1, 1, 1);
         layers = new ArrayList<Layer>();
         setSize(new Dimension(width, height));
         addLayer(new Layer());
     }

     // =================================================================================================================
     // JIBX Methods

     /**
      * Called by JIBX before all fields have been set
      *
      * @param context The JIBX Unmarshalling Context
      */
     private void preSet(IUnmarshallingContext context) {
         canvasUIDefaults = (UIDefaults) context.getUserContext();
     }

     // =================================================================================================================
     // Bean Methods

     /**
      * Get the UIDefaults for this canvas. The UIDefaults is used to store default pallet of colors, fonts etc.
      *
      * @return Canvas UIDefaults
      */
     public UIDefaults getUiDefaults() {
         return canvasUIDefaults;
     }

     /**
      * Set the UIDefaults for this canvas. The UIDefaults is used to store default pallet of colors, fonts etc.
      *
      * @param canvasUIDefaults Canvas UIDefaults
      */
     public void setUiDefaults(UIDefaults canvasUIDefaults) {
         this.canvasUIDefaults = canvasUIDefaults;
     }

     /**
      * Get the current working layer, is is the layer that new shapes will be drawn into
      *
      * @return The current working layer, may be null if there is no working layer
      */
     public Layer getWorkingLayer() {
         return workingLayer;
     }

     /**
      * Set the current working layer, is is the layer that new shapes will be drawn into
      *
      * @param workingLayer the new working layer, must be a child of this canvas
      */
     public void setWorkingLayer(Layer workingLayer) {
         Layer old = getWorkingLayer();
         this.workingLayer = workingLayer;
         firePropertyChange("workingLayer", old, getWorkingLayer());
     }

     public int getNextLayerNameIndex() {
         return nextLayerNameIndex++;
     }

     public Dimension getSize() {
         return size;
     }

     public void setSize(Dimension size) {
         Dimension old = getSize();
         this.size = size;
         buffer = new BufferedImage(this.size.width, this.size.height, BufferedImage.TYPE_INT_ARGB);
         isValid = false;
         firePropertyChange("size", old, getSize());
     }


     public Insets getStretchingInsets() {
         return stretchingInsets;
     }

     public void setStretchingInsets(Insets stretchingInsets) {
         Insets old = getStretchingInsets();
         this.stretchingInsets = stretchingInsets;
         firePropertyChange("stretchingInsets", old, getStretchingInsets());
     }

     public BufferedImage getRenderedImage() {
         if (!isValid) {
             Graphics2D g2 = buffer.createGraphics();
             // clear
             g2.setComposite(AlphaComposite.Clear);
             g2.fillRect(0, 0, buffer.getWidth(), buffer.getHeight());
             // paint
             g2.setRenderingHint(RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_ON);
             g2.setComposite(AlphaComposite.SrcOver);
             for (int i = layers.size() - 1; i >= 0; i--) {
                 layers.get(i).paint(g2, 1);
             }
             g2.dispose();
         }
         return buffer;
     }

     /**
      * @return true if this Canvas has not been edited.
      *         <p/>
      *         TODO Currently this is not a bound property, but should be. That is, when the Canvas becomes edited
      *         (usually due to the Layer having a shape added to it), then a property change event should be fired.
      */
     public boolean isBlank() {
         return layers.size() == 0 || (layers.size() == 1 && layers.get(0).isEmpty());
     }

     public File getResourcesDir() {
         return resourcesDir;
     }

     public void setResourcesDir(File resourcesDir) {
         File old = getResourcesDir();
         this.resourcesDir = resourcesDir;
         firePropertyChange("resourcesDir", old, getResourcesDir());
     }

     public File getImagesDir() {
         return imagesDir;
     }

     public void setImagesDir(File imagesDir) {
         File old = getImagesDir();
         this.imagesDir = imagesDir;
         firePropertyChange("imagesDir", old, getImagesDir());
     }

     public File getTemplatesDir() {
         return templatesDir;
     }

     public void setTemplatesDir(File templatesDir) {
         File old = getTemplatesDir();
         this.templatesDir = templatesDir;
         firePropertyChange("templatesDir", old, getTemplatesDir());
     }

     // =================================================================================================================
     // LayerContainer Methods

     public LayerContainer getParent() {
         // we are root so null
         return null;
     }

     public void addLayerToBottom(Layer layer) {
         layers.add(layer);
         layer.setParent(this);
         layer.addPropertyChangeListener(layersPropertyChangeListener);
         // no single layer changes so fire all changed event
         firePropertyChange("layers", null, layers);
     }

     public void addLayer(int i, Layer layer) {
         layers.add(i, layer);
         layer.setParent(this);
         layer.addPropertyChangeListener(layersPropertyChangeListener);
         // no single layer changes so fire all changed event
         firePropertyChange("layers", null, layers);
     }

     public void addLayer(Layer layer) {
         layers.add(0, layer);
         layer.setParent(this);
         layer.addPropertyChangeListener(layersPropertyChangeListener);
         // no single layer changes so fire all changed event
         firePropertyChange("layers", null, layers);
     }

     public Layer getLayer(int index) {
         return layers.get(index);
     }

     public int getLayerCount() {
         return layers.size();
     }

     public Iterator<Layer> getLayerIterator() {
         return Collections.unmodifiableList(layers).iterator();
     }

     public Collection<Layer> getLayers() {
         return Collections.unmodifiableList(layers);
     }

     public int indexOfLayer(Layer layer) {
         return layers.indexOf(layer);
     }

     public void removeLayer(Layer layer) {
         int index = layers.indexOf(layer);
         if (index != -1) {
             layers.remove(layer);
             layer.removePropertyChangeListener(layersPropertyChangeListener);
             fireIndexedPropertyChange("layers", index, layer, null);
         }
     }

     public Dimension getRootSize() {
         return getSize();
     }

     // =================================================================================================================
     // JIBX Helper Methods

     /** Called by JIBX after "layers" has been filled so we can set parents and listeners */
     private void setupLayers() {
         for (Layer layer : layers) {
             layer.setParent(this);
             layer.addPropertyChangeListener(layersPropertyChangeListener);
         }
         // no single layer changes so fire all changed event
         firePropertyChange("layers", null, layers);
     }
 }
	/*
	* Copyright 2002-2007 Sun Microsystems, Inc. All Rights Reserved.
	* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
	*
	* This code is free software; you can redistribute it and/or modify it
	* under the terms of the GNU General Public License version 2 only, as
	* published by the Free Software Foundation. Sun designates this
	* particular file as subject to the "Classpath" exception as provided
	* by Sun in the LICENSE file that accompanied this code.
	*
	* This code is distributed in the hope that it will be useful, but WITHOUT
	* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
	* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
	* version 2 for more details (a copy is included in the LICENSE file that
	* accompanied this code).
	*
	* You should have received a copy of the GNU General Public License version
	* 2 along with this work; if not, write to the Free Software Foundation,
	* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
	*
	* Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
	* CA 95054 USA or visit www.sun.com if you need additional information or
	* have any questions.
	*/
	package org.jdesktop.swingx.designer;

	import org.jdesktop.beans.AbstractBean;
	import org.jdesktop.swingx.designer.utils.HasResources;
	import org.jdesktop.swingx.designer.utils.HasUIDefaults;
	import org.jibx.runtime.IUnmarshallingContext;

	import javax.swing.UIDefaults;
	import java.awt.AlphaComposite;
	import java.awt.Dimension;
	import java.awt.Graphics2D;
	import java.awt.Insets;
	import java.awt.RenderingHints;
	import java.awt.image.BufferedImage;
	import java.beans.PropertyChangeEvent;
	import java.beans.PropertyChangeListener;
	import java.io.File;
	import java.util.ArrayList;
	import java.util.Collection;
	import java.util.Collections;
	import java.util.Iterator;
	import java.util.List;

	/**
	* ComponentRegion
	*
	* @author Created by Jasper Potts (May 22, 2007)
	*/
	public class Canvas extends AbstractBean implements LayerContainer, HasUIDefaults, HasResources {
	private Dimension size;
	/** list of all layers in the canvas, the first layer is painted on top */
	private List<Layer> layers;
	private int nextLayerNameIndex = 1;
	private BufferedImage buffer;
	private boolean isValid = false;
	private Insets stretchingInsets = null;
	private Layer workingLayer = null;
	private PropertyChangeListener layersPropertyChangeListener;
	private UIDefaults canvasUIDefaults = null;
	private transient File resourcesDir;
	private transient File imagesDir;
	private transient File templatesDir;

	// =================================================================================================================
	// Constructor

	/** Private constructor for JIBX */
	protected Canvas() {
	layersPropertyChangeListener = new PropertyChangeListener() {
	public void propertyChange(PropertyChangeEvent evt) {
	isValid = false;
	// pass on layer change
	int index = layers.indexOf((Layer) evt.getSource());
	if (index != -1) {
	firePropertyChange("layers[" + index + "]." + evt.getPropertyName(), evt.getOldValue(),
	evt.getNewValue());
	}
	}
	};
	}

	public Canvas(int width, int height) {
	this();
	stretchingInsets = new Insets(1, 1, 1, 1);
	layers = new ArrayList<Layer>();
	setSize(new Dimension(width, height));
	addLayer(new Layer());
	}

	// =================================================================================================================
	// JIBX Methods

	/**
	* Called by JIBX before all fields have been set
	*
	* @param context The JIBX Unmarshalling Context
	*/
	private void preSet(IUnmarshallingContext context) {
	canvasUIDefaults = (UIDefaults) context.getUserContext();
	}

	// =================================================================================================================
	// Bean Methods

	/**
	* Get the UIDefaults for this canvas. The UIDefaults is used to store default pallet of colors, fonts etc.
	*
	* @return Canvas UIDefaults
	*/
	public UIDefaults getUiDefaults() {
	return canvasUIDefaults;
	}

	/**
	* Set the UIDefaults for this canvas. The UIDefaults is used to store default pallet of colors, fonts etc.
	*
	* @param canvasUIDefaults Canvas UIDefaults
	*/
	public void setUiDefaults(UIDefaults canvasUIDefaults) {
	this.canvasUIDefaults = canvasUIDefaults;
	}

	/**
	* Get the current working layer, is is the layer that new shapes will be drawn into
	*
	* @return The current working layer, may be null if there is no working layer
	*/
	public Layer getWorkingLayer() {
	return workingLayer;
	}

	/**
	* Set the current working layer, is is the layer that new shapes will be drawn into
	*
	* @param workingLayer the new working layer, must be a child of this canvas
	*/
	public void setWorkingLayer(Layer workingLayer) {
	Layer old = getWorkingLayer();
	this.workingLayer = workingLayer;
	firePropertyChange("workingLayer", old, getWorkingLayer());
	}

	public int getNextLayerNameIndex() {
	return nextLayerNameIndex++;
	}

	public Dimension getSize() {
	return size;
	}

	public void setSize(Dimension size) {
	Dimension old = getSize();
	this.size = size;
	buffer = new BufferedImage(this.size.width, this.size.height, BufferedImage.TYPE_INT_ARGB);
	isValid = false;
	firePropertyChange("size", old, getSize());
	}


	public Insets getStretchingInsets() {
	return stretchingInsets;
	}

	public void setStretchingInsets(Insets stretchingInsets) {
	Insets old = getStretchingInsets();
	this.stretchingInsets = stretchingInsets;
	firePropertyChange("stretchingInsets", old, getStretchingInsets());
	}

	public BufferedImage getRenderedImage() {
	if (!isValid) {
	Graphics2D g2 = buffer.createGraphics();
	// clear
	g2.setComposite(AlphaComposite.Clear);
	g2.fillRect(0, 0, buffer.getWidth(), buffer.getHeight());
	// paint
	g2.setRenderingHint(RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_ON);
	g2.setComposite(AlphaComposite.SrcOver);
	for (int i = layers.size() - 1; i >= 0; i--) {
	layers.get(i).paint(g2, 1);
	}
	g2.dispose();
	}
	return buffer;
	}

	/**
	* @return true if this Canvas has not been edited.
	* <p/>
	* TODO Currently this is not a bound property, but should be. That is, when the Canvas becomes edited
	* (usually due to the Layer having a shape added to it), then a property change event should be fired.
	*/
	public boolean isBlank() {
	return layers.size() == 0 \|\| (layers.size() == 1 && layers.get(0).isEmpty());
	}

	public File getResourcesDir() {
	return resourcesDir;
	}

	public void setResourcesDir(File resourcesDir) {
	File old = getResourcesDir();
	this.resourcesDir = resourcesDir;
	firePropertyChange("resourcesDir", old, getResourcesDir());
	}

	public File getImagesDir() {
	return imagesDir;
	}

	public void setImagesDir(File imagesDir) {
	File old = getImagesDir();
	this.imagesDir = imagesDir;
	firePropertyChange("imagesDir", old, getImagesDir());
	}

	public File getTemplatesDir() {
	return templatesDir;
	}

	public void setTemplatesDir(File templatesDir) {
	File old = getTemplatesDir();
	this.templatesDir = templatesDir;
	firePropertyChange("templatesDir", old, getTemplatesDir());
	}

	// =================================================================================================================
	// LayerContainer Methods

	public LayerContainer getParent() {
	// we are root so null
	return null;
	}

	public void addLayerToBottom(Layer layer) {
	layers.add(layer);
	layer.setParent(this);
	layer.addPropertyChangeListener(layersPropertyChangeListener);
	// no single layer changes so fire all changed event
	firePropertyChange("layers", null, layers);
	}

	public void addLayer(int i, Layer layer) {
	layers.add(i, layer);
	layer.setParent(this);
	layer.addPropertyChangeListener(layersPropertyChangeListener);
	// no single layer changes so fire all changed event
	firePropertyChange("layers", null, layers);
	}

	public void addLayer(Layer layer) {
	layers.add(0, layer);
	layer.setParent(this);
	layer.addPropertyChangeListener(layersPropertyChangeListener);
	// no single layer changes so fire all changed event
	firePropertyChange("layers", null, layers);
	}

	public Layer getLayer(int index) {
	return layers.get(index);
	}

	public int getLayerCount() {
	return layers.size();
	}

	public Iterator<Layer> getLayerIterator() {
	return Collections.unmodifiableList(layers).iterator();
	}

	public Collection<Layer> getLayers() {
	return Collections.unmodifiableList(layers);
	}

	public int indexOfLayer(Layer layer) {
	return layers.indexOf(layer);
	}

	public void removeLayer(Layer layer) {
	int index = layers.indexOf(layer);
	if (index != -1) {
	layers.remove(layer);
	layer.removePropertyChangeListener(layersPropertyChangeListener);
	fireIndexedPropertyChange("layers", index, layer, null);
	}
	}

	public Dimension getRootSize() {
	return getSize();
	}

	// =================================================================================================================
	// JIBX Helper Methods

	/** Called by JIBX after "layers" has been filled so we can set parents and listeners */
	private void setupLayers() {
	for (Layer layer : layers) {
	layer.setParent(this);
	layer.addPropertyChangeListener(layersPropertyChangeListener);
	}
	// no single layer changes so fire all changed event
	firePropertyChange("layers", null, layers);
	}
	}