/* ******************************************************************************
* Copyright (c) 2006-2012 XMind Ltd. and others.
*
* This file is a part of XMind 3. XMind releases 3 and
* above are dual-licensed under the Eclipse Public License (EPL),
* which is available at http://www.eclipse.org/legal/epl-v10.html
* and the GNU Lesser General Public License (LGPL),
* which is available at http://www.gnu.org/licenses/lgpl.html
* See http://www.xmind.net/license.html for details.
*
* Contributors:
* XMind Ltd. - initial API and implementation
*******************************************************************************/
package org.xmind.ui.internal.figures;
import java.util.Iterator;
import java.util.List;
import org.eclipse.draw2d.Graphics;
import org.eclipse.draw2d.IClippingStrategy;
import org.eclipse.draw2d.IFigure;
import org.eclipse.draw2d.geometry.Rectangle;
import org.eclipse.swt.SWT;
import org.xmind.gef.draw2d.IDecoratedFigure;
import org.xmind.gef.draw2d.IDecoratedFigureListener;
import org.xmind.gef.draw2d.IMinimizable;
import org.xmind.gef.draw2d.IShadowedFigure;
import org.xmind.gef.draw2d.ITransparentableFigure;
import org.xmind.gef.draw2d.ReferencedFigure;
import org.xmind.gef.draw2d.decoration.IDecoration;
import org.xmind.gef.draw2d.decoration.IShadowedDecoration;
import org.xmind.gef.draw2d.graphics.AlphaGraphics;
import org.xmind.gef.draw2d.graphics.GraphicsUtils;
import org.xmind.gef.draw2d.graphics.GrayedGraphics;
import org.xmind.ui.decorations.IBranchDecoration;
import org.xmind.ui.internal.decorations.CalloutBranchConnections;
public class BranchFigure extends ReferencedFigure implements IDecoratedFigure,
IMinimizable, IShadowedFigure, ITransparentableFigure {
private static final int FLAG_FOLDED = MAX_FLAG << 1;
private static final int FLAG_MINIMIZED = MAX_FLAG << 2;
static {
MAX_FLAG = FLAG_MINIMIZED;
}
private IDecoration connections = null;
private IDecoration decoration = null;
private int mainAlpha = 0xff;
private int alpha = 0xff;
private IDecoration calloutConnections = null;
public boolean isFolded() {
return getFlag(FLAG_FOLDED);
}
public void setFolded(boolean folded) {
if (folded == isFolded())
return;
setFlag(FLAG_FOLDED, folded);
revalidate();
repaint();
}
public boolean getMinimized() {
return getFlag(FLAG_MINIMIZED);
}
public boolean isMinimized() {
if (getMinimized())
return true;
if (getParent() instanceof BranchFigure) {
if (((BranchFigure) getParent()).isFolded())
return true;
}
if (getParent() != null && getParent() instanceof IMinimizable)
return ((IMinimizable) getParent()).isMinimized();
return false;
}
public void setMinimized(boolean minimized) {
if (minimized == isMinimized())
return;
setFlag(FLAG_MINIMIZED, minimized);
revalidate();
repaint();
}
public IDecoration getConnections() {
return connections;
}
public void setConnections(IDecoration connections) {
if (connections == this.connections)
return;
this.connections = connections;
revalidate();
repaint();
}
public IDecoration getCalloutConnections() {
return calloutConnections;
}
public void setCalloutConnections(IDecoration calloutConnections) {
if (calloutConnections == this.calloutConnections)
return;
this.calloutConnections = calloutConnections;
revalidate();
repaint();
}
public IDecoration getDecoration() {
return decoration;
}
public void setDecoration(IDecoration decoration) {
IDecoration oldDecoration = this.decoration;
if (decoration == oldDecoration)
return;
this.decoration = decoration;
fireDecorationChanged(oldDecoration, decoration);
repaint();
}
public void addDecoratedFigureListener(IDecoratedFigureListener listener) {
addListener(IDecoratedFigureListener.class, listener);
}
public void removeDecoratedFigureListener(
IDecoratedFigureListener listener) {
removeListener(IDecoratedFigureListener.class, listener);
}
protected void fireDecorationChanged(IDecoration oldDecoration,
IDecoration newDecoration) {
Iterator listeners = getListeners(IDecoratedFigureListener.class);
while (listeners.hasNext()) {
((IDecoratedFigureListener) listeners.next())
.decorationChanged(this, oldDecoration, newDecoration);
}
}
public boolean isShadowShowing() {
return isShowing() && getMainAlpha() > 0;
}
public int getMainAlpha() {
return mainAlpha;
}
public int getSubAlpha() {
return alpha;
}
public void setMainAlpha(int alpha) {
if (alpha == this.mainAlpha)
return;
this.mainAlpha = alpha;
repaint();
}
public void setSubAlpha(int alpha) {
if (alpha == this.alpha)
return;
this.alpha = alpha;
repaint();
}
public void invalidate() {
if (connections != null)
connections.invalidate();
if (calloutConnections != null)
calloutConnections.invalidate();
if (decoration != null)
decoration.invalidate();
super.invalidate();
}
public void setEnabled(boolean value) {
super.setEnabled(value);
repaint();
}
public void paint(Graphics graphics) {
GraphicsUtils.fixGradientBugForCarbon(graphics, this);
if (getMainAlpha() < 0xff) {
AlphaGraphics ag = new AlphaGraphics(graphics);
ag.setMainAlpha(getMainAlpha());
ag.setAlpha(graphics.getAlpha());
try {
doPaint(ag);
} finally {
ag.dispose();
}
} else {
doPaint(graphics);
}
}
private void doPaint(Graphics graphics) {
if (isEnabled()) {
super.paint(graphics);
} else {
GrayedGraphics gg = new GrayedGraphics(graphics);
try {
super.paint(gg);
} finally {
gg.dispose();
}
}
}
protected void paintFigure(Graphics graphics) {
if (getSubAlpha() < 0xff) {
AlphaGraphics ag = new AlphaGraphics(graphics);
ag.setMainAlpha(getSubAlpha());
try {
doPaintFigure(ag);
} finally {
ag.dispose();
}
} else {
doPaintFigure(graphics);
}
}
protected void paintChildren(Graphics graphics) {
List children = getChildren();
for (int i = 0; i < children.size(); i++) {
IFigure child = (IFigure) children.get(i);
if (child.isVisible()) {
if (child instanceof TopicFigure) {
graphics.setAntialias(SWT.ON);
if (connections != null) {
connections.paint(this, graphics);
}
decoration.paint(this, graphics);
IFigure parentFigure = getParent();
if (parentFigure instanceof BranchFigure) {
CalloutBranchConnections parentCC = (CalloutBranchConnections) ((BranchFigure) parentFigure)
.getCalloutConnections();
IDecoration calloutConnection = parentCC
.getDecoration(this);
if (calloutConnection != null)
calloutConnection.paint(parentFigure, graphics);
}
if (this.calloutConnections != null) {
this.calloutConnections.paint(this, graphics);
}
}
// determine clipping areas for child
IClippingStrategy clippingStrategy = getClippingStrategy();
Rectangle[] clipping = null;
if (clippingStrategy != null) {
clipping = clippingStrategy.getClip(child);
} else {
// default clipping behaviour is to clip at bounds
clipping = new Rectangle[] { child.getBounds() };
}
// child may now paint inside the clipping areas
for (int j = 0; j < clipping.length; j++) {
if (clipping[j].intersects(
graphics.getClip(Rectangle.SINGLETON))) {
graphics.clipRect(clipping[j]);
child.paint(graphics);
graphics.restoreState();
}
}
}
}
}
private void doPaintFigure(Graphics graphics) {
graphics.setAntialias(SWT.ON);
super.paintFigure(graphics);
}
protected void paintBorder(Graphics graphics) {
super.paintBorder(graphics);
if (decoration != null && decoration instanceof IBranchDecoration) {
((IBranchDecoration) decoration).paintAboveChildren(this, graphics);
}
}
public void paintShadow(Graphics graphics) {
if (connections != null && connections instanceof IShadowedDecoration) {
((IShadowedDecoration) connections).paintShadow(this, graphics);
}
if (calloutConnections != null
&& calloutConnections instanceof IShadowedDecoration) {
((IShadowedDecoration) calloutConnections).paintShadow(this,
graphics);
}
if (decoration != null && decoration instanceof IShadowedDecoration) {
((IShadowedDecoration) decoration).paintShadow(this, graphics);
}
}
public String toString() {
for (Object c : getChildren()) {
if (c instanceof TopicFigure) {
return "BranchFigure(" + c.toString() + ")"; //$NON-NLS-1$ //$NON-NLS-2$
}
}
return super.toString();
}
}
