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/*****************************************************************************
* Copyright (c) 2011 CEA LIST.
*
* 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:
*
* CEA LIST - Initial API and implementation
* Mickael ADAM (ALL4TEC) - mickael.adam@all4tec.net - implementation of layout BorderedLayoutManager to provide maintain ratio and color set
* Fanch BONNABESSE (ALL4TEC) - fanch.bonnabesse@all4tec.net - Bug 502531
*
*****************************************************************************/
package org.eclipse.papyrus.infra.gmfdiag.common.figure.node;
import org.eclipse.draw2d.AbstractLayout;
import org.eclipse.draw2d.Graphics;
import org.eclipse.draw2d.IFigure;
import org.eclipse.draw2d.ScrollPane;
import org.eclipse.draw2d.geometry.Dimension;
import org.eclipse.draw2d.geometry.Point;
import org.eclipse.draw2d.geometry.Rectangle;
import org.eclipse.gmf.runtime.draw2d.ui.render.RenderedImage;
import org.eclipse.gmf.runtime.draw2d.ui.render.figures.ScalableImageFigure;
import org.eclipse.papyrus.infra.gmfdiag.common.utils.FigureUtils;
/**
* Scalable Image figure that will be aligned in the middle/center and keep its own ratio.
*
* It is also used to serve as specific implementation in Papyrus, as debug items can be easily added.
*/
public class BorderedScalableImageFigure extends ScalableImageFigure {
private RenderedImage lastRenderedImage;
public BorderedScalableImageFigure(RenderedImage renderedImage, boolean useDefaultImageSize, boolean useOriginalColors, boolean antiAlias) {
this(renderedImage, useDefaultImageSize, useOriginalColors, antiAlias, true);
}
public BorderedScalableImageFigure(RenderedImage renderedImage, boolean useDefaultImageSize, boolean useOriginalColors, boolean antiAlias, boolean isModificationPreferredSize) {
super(renderedImage, useDefaultImageSize, useOriginalColors, antiAlias);
// set a layout manager to override maintain ratio behavior
setLayoutManager(new BorderedLayoutManager());
lastRenderedImage = renderedImage;
// assure that ShapeFlowLayout gets the actual image size as preferred size. Otherwise, it would
// scale the image to identical width and height which would make it impossible to calculate the
// original aspect ratio (SVG specific workaround was in place before, see bug 500999).
if (isModificationPreferredSize) {
setPreferredImageSize(
renderedImage.getSWTImage().getBounds().width,
renderedImage.getSWTImage().getBounds().height);
}
}
@Override
protected void paintFigure(Graphics graphics) {
if (!lastRenderedImage.getSWTImage().isDisposed()) { // Fix bug 462850
// Get the parent bounds
Rectangle parentBounds = getParent().getBounds().getCopy();
// Get the main figure where are color informations.
IRoundedRectangleFigure roundedCompartmentFigure = getMainFigure();
// Set the color from the color of the parent
if (roundedCompartmentFigure != null) {
setBackgroundColor(roundedCompartmentFigure.getBackgroundColor());
setForegroundColor(roundedCompartmentFigure.getForegroundColor());
} else {
// Set the color from the color of the parent
setBackgroundColor(getParent().getBackgroundColor());
setForegroundColor(getParent().getForegroundColor());
}
// set the clip of the graphics to the parent clip
graphics.setClip(parentBounds);
super.paintFigure(graphics);
}
}
/**
* Gets the main figure.
*
* @return the roundedRectangleFigure
*/
private IRoundedRectangleFigure getMainFigure() {
// If it's called by SVGNodePlate, the parent have not always the foreground color, need to locate
SVGNodePlateFigure svgNodePlate = FigureUtils.findParentFigureInstance(this, SVGNodePlateFigure.class);
return svgNodePlate == null ? null : FigureUtils.findChildFigureInstance(svgNodePlate, IRoundedRectangleFigure.class);
}
class BorderedLayoutManager extends AbstractLayout {
/**
* @see org.eclipse.draw2d.LayoutManager#layout(org.eclipse.draw2d.IFigure)
*
* @param container
*/
@Override
public void layout(IFigure container) {
// Look for a ScrollBarPane to hide ScrollPane
IFigure scrollPaneFigure = FigureUtils.findParentFigureInstance(container, ScrollPane.class);
// Hide the ScrollBar if a ScrollPan is found
if (scrollPaneFigure instanceof ScrollPane) {
((ScrollPane) scrollPaneFigure).setScrollBarVisibility(org.eclipse.draw2d.ScrollPane.NEVER);
}
// if there is aspect ratio and only one figure is set
if (isMaintainAspectRatio() && container.getParent().getChildren().size() == 1) {
// If the ratio is maintained
ScalableCompartmentFigure scalableCompartmentFigure = FigureUtils.findParentFigureInstance(container, ScalableCompartmentFigure.class);
// Get the image to calculate ratio
ScalableImageFigure scalableImage = FigureUtils.findChildFigureInstance(getParent(), ScalableImageFigure.class);
RenderedImage renderedImage = scalableImage.getRenderedImage();
Rectangle scalableCompartmentBounds = scalableCompartmentFigure != null ? scalableCompartmentBounds = scalableCompartmentFigure.getBounds() : container.getBounds();
double ratio = (double) renderedImage.getRenderInfo().getWidth() /
(double) renderedImage.getRenderInfo().getHeight();
Point center = new Point(
scalableCompartmentBounds.x + scalableCompartmentBounds.width / 2,
scalableCompartmentBounds.y + scalableCompartmentBounds.height / 2);
int width;
int height;
// Case width>height
if (scalableCompartmentBounds.width > scalableCompartmentBounds.height) {
if (scalableCompartmentBounds.width > scalableCompartmentBounds.height * ratio) {
width = (int) (scalableCompartmentBounds.height * ratio);
height = scalableCompartmentBounds.height;
} else {
width = scalableCompartmentBounds.width;
height = (int) (scalableCompartmentBounds.width / ratio);
}
} else {// Case height>width
if (scalableCompartmentBounds.height < scalableCompartmentBounds.width / ratio) {
width = (int) (scalableCompartmentBounds.height * ratio);
height = scalableCompartmentBounds.height;
} else {
width = scalableCompartmentBounds.width;
height = (int) (scalableCompartmentBounds.width / ratio);
}
}
int y = center.y - height / 2;
int x = center.x - width / 2;
container.setBounds(new Rectangle(x, y, width, height));
} else {
// Set bounds
if (scrollPaneFigure instanceof ScrollPane) {
container.setBounds(scrollPaneFigure.getBounds());
}
}
}
/**
* @see org.eclipse.draw2d.AbstractLayout#calculatePreferredSize(org.eclipse.draw2d.IFigure, int, int)
*
* @param container
* @param wHint
* @param hHint
* @return
*/
@Override
protected Dimension calculatePreferredSize(IFigure container, int wHint, int hHint) {
return null;
}
}
}
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