| /****************************************************************************** |
| * Copyright (c) 2003, 2010 IBM Corporation 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: |
| * IBM Corporation - initial API and implementation |
| ****************************************************************************/ |
| |
| |
| package org.eclipse.gmf.runtime.diagram.ui.geoshapes.internal.draw2d.figures; |
| |
| import org.eclipse.draw2d.Graphics; |
| import org.eclipse.draw2d.geometry.Point; |
| import org.eclipse.draw2d.geometry.PointList; |
| import org.eclipse.draw2d.geometry.PrecisionPoint; |
| import org.eclipse.draw2d.geometry.PrecisionRectangle; |
| import org.eclipse.draw2d.geometry.Rectangle; |
| import org.eclipse.gmf.runtime.draw2d.ui.figures.IPolygonAnchorableFigure; |
| import org.eclipse.gmf.runtime.draw2d.ui.figures.PolylineConnectionEx; |
| import org.eclipse.gmf.runtime.draw2d.ui.figures.RoundedRectangleBorder; |
| import org.eclipse.gmf.runtime.draw2d.ui.geometry.PointListUtilities; |
| import org.eclipse.gmf.runtime.draw2d.ui.geometry.PrecisionPointList; |
| import org.eclipse.swt.graphics.Path; |
| |
| /** |
| * @author jschofie |
| * |
| * This Figure represents a Rounded Rectangle Figure |
| */ |
| public class GeoShapeRoundedRectangleFigure extends GeoShapeFigure implements IPolygonAnchorableFigure { |
| |
| // cache the anchor border point list since the calculation is costly. |
| private PointList anchorBorderPointList; |
| |
| /** |
| * Constructor - Creates a rounded rectangle with a given Default size |
| * |
| * @param width inital width of the figure |
| * @param height initial height of the figure |
| * @param spacing <code>int<code> the spacing between children in logical units |
| */ |
| public GeoShapeRoundedRectangleFigure( int width, int height, int spacing) { |
| super(width, height, spacing); |
| } |
| |
| /** |
| * @see org.eclipse.draw2d.Figure#paintBorder(org.eclipse.draw2d.Graphics) |
| */ |
| protected void paintFigure(Graphics g) { |
| Rectangle r = getBounds().getCopy().shrink(getLineWidth() / 2, getLineWidth() / 2); |
| |
| int cornerRadius = getCornerRadius(); |
| |
| g.pushState(); |
| applyTransparency(g); |
| if (!isUsingGradient()) { |
| // Draw the rectangle with the fill color |
| g.fillRoundRectangle(r, cornerRadius, cornerRadius); |
| } else { |
| fillGradient(g); |
| } |
| g.popState(); |
| } |
| |
| /** |
| * Estimate the anchor intersection points by using a polyline smoothed |
| * with bezier curves for the rounded top and bottom arcs. |
| * |
| * @return PointList of the border of the shape |
| */ |
| public PointList getAnchorBorderPointList() { |
| int arcSize = getCornerRadius(); |
| PrecisionRectangle rBounds = new PrecisionRectangle(getBounds()); |
| if (arcSize == 0) { |
| // rectangle, no rounded corners |
| PrecisionPointList ptList = new PrecisionPointList(5); |
| ptList.addPoint(new PrecisionPoint(rBounds.preciseX, rBounds.preciseY)); |
| ptList.addPoint(new PrecisionPoint(rBounds.preciseX + rBounds.preciseWidth, rBounds.preciseY)); |
| ptList.addPoint(new PrecisionPoint(rBounds.preciseX + rBounds.preciseWidth, rBounds.preciseY + rBounds.preciseHeight)); |
| ptList.addPoint(new PrecisionPoint(rBounds.preciseX, rBounds.preciseY + rBounds.preciseHeight)); |
| ptList.addPoint(new PrecisionPoint(rBounds.preciseX, rBounds.preciseY)); |
| return ptList; |
| } |
| |
| // working our way counter-clockwise find key points. |
| Point keyPoint1 = new PrecisionPoint(rBounds.getTopLeft().x + arcSize/2, rBounds.getTopLeft().y); |
| Point keyPoint2 = new PrecisionPoint(rBounds.getTopLeft().x, rBounds.getTopLeft().y + arcSize/2); |
| Point keyPoint3 = new PrecisionPoint(rBounds.getBottomLeft().x, rBounds .getBottomLeft().y - arcSize/2); |
| Point keyPoint4 = new PrecisionPoint(rBounds.getBottomLeft().x + arcSize/2, rBounds.getBottomLeft().y); |
| Point keyPoint5 = new PrecisionPoint(rBounds.getBottomRight().x - arcSize/2, rBounds.getBottomRight().y); |
| Point keyPoint6 = new PrecisionPoint(rBounds.getBottomRight().x, rBounds.getBottomRight().y - arcSize/2); |
| Point keyPoint7 = new PrecisionPoint(rBounds.getTopRight().x, rBounds.getTopRight().y + arcSize/2); |
| Point keyPoint8 = new PrecisionPoint(rBounds.getTopRight().x - arcSize/2, rBounds.getTopRight().y); |
| |
| // create point lists for the corners |
| PointList upperLeftPointList = new PointList(); |
| upperLeftPointList.addPoint(keyPoint1); |
| upperLeftPointList.addPoint(rBounds.getTopLeft().x + arcSize/4, rBounds.getTopLeft().y + arcSize/16); |
| upperLeftPointList.addPoint(rBounds.getTopLeft().x + arcSize/16, rBounds.getTopLeft().y + arcSize/4); |
| upperLeftPointList.addPoint(keyPoint2); |
| |
| PointList lowerLeftPointList = new PointList(); |
| lowerLeftPointList.addPoint(keyPoint3); |
| lowerLeftPointList.addPoint(rBounds.getBottomLeft().x + arcSize/16, rBounds.getBottomLeft().y - arcSize/4); |
| lowerLeftPointList.addPoint(rBounds.getBottomLeft().x + arcSize/4, rBounds.getBottomLeft().y - arcSize/16); |
| lowerLeftPointList.addPoint(keyPoint4); |
| |
| PointList lowerRightPointList = new PointList(); |
| lowerRightPointList.addPoint(keyPoint5); |
| lowerRightPointList.addPoint(rBounds.getBottomRight().x - arcSize/4, rBounds.getBottomRight().y - arcSize/16); |
| lowerRightPointList.addPoint(rBounds.getBottomRight().x - arcSize/16, rBounds.getBottomRight().y - arcSize/4); |
| lowerRightPointList.addPoint(keyPoint6); |
| |
| PointList upperRightPointList = new PointList(); |
| upperRightPointList.addPoint(keyPoint7); |
| upperRightPointList.addPoint(rBounds.getTopRight().x - arcSize/16, rBounds.getTopRight().y + arcSize/4); |
| upperRightPointList.addPoint(rBounds.getTopRight().x - arcSize/4, rBounds.getTopRight().y + arcSize/16); |
| upperRightPointList.addPoint(keyPoint8); |
| |
| // combine all the points and smooth out the corners with bezier curves. |
| PointList combinedPointList = new PointList(); |
| combinedPointList.addPoint(keyPoint1); |
| combinedPointList.addAll(PointListUtilities.calcSmoothPolyline( |
| upperLeftPointList, PolylineConnectionEx.SMOOTH_MORE, |
| PointListUtilities.DEFAULT_BEZIERLINES)); |
| combinedPointList.addPoint(keyPoint2); |
| combinedPointList.addPoint(keyPoint3); |
| combinedPointList.addAll(PointListUtilities.calcSmoothPolyline( |
| lowerLeftPointList, PolylineConnectionEx.SMOOTH_MORE, |
| PointListUtilities.DEFAULT_BEZIERLINES)); |
| combinedPointList.addPoint(keyPoint4); |
| combinedPointList.addPoint(keyPoint5); |
| combinedPointList.addAll(PointListUtilities.calcSmoothPolyline( |
| lowerRightPointList, PolylineConnectionEx.SMOOTH_MORE, |
| PointListUtilities.DEFAULT_BEZIERLINES)); |
| combinedPointList.addPoint(keyPoint6); |
| combinedPointList.addPoint(keyPoint7); |
| combinedPointList.addAll(PointListUtilities.calcSmoothPolyline( |
| upperRightPointList, PolylineConnectionEx.SMOOTH_MORE, |
| PointListUtilities.DEFAULT_BEZIERLINES)); |
| combinedPointList.addPoint(keyPoint8); |
| combinedPointList.addPoint(keyPoint1); |
| |
| PointListUtilities.normalizeSegments(combinedPointList); |
| |
| return combinedPointList; |
| } |
| |
| /* |
| * (non-Javadoc) |
| * @see org.eclipse.draw2d.Figure#setBounds(org.eclipse.draw2d.geometry.Rectangle) |
| */ |
| public void setBounds(Rectangle rect) { |
| super.setBounds(rect); |
| anchorBorderPointList = null; |
| } |
| |
| /* |
| * @see org.eclipse.gmf.runtime.draw2d.ui.figures.IPolygonAnchorableFigure#getPolygonPoints() |
| */ |
| public PointList getPolygonPoints() { |
| if (anchorBorderPointList == null) { |
| anchorBorderPointList = getAnchorBorderPointList(); |
| } |
| return anchorBorderPointList.getCopy(); |
| } |
| |
| /* (non-Javadoc) |
| * @see org.eclipse.gmf.runtime.gef.ui.figures.NodeFigure#getPath() |
| * @since 1.2 |
| */ |
| protected Path getPath() { |
| Path path = new Path(null); |
| |
| int arcSize = getCornerRadius(); |
| PrecisionRectangle rBounds = new PrecisionRectangle(getBounds()); |
| rBounds.shrink(getLineWidth() / 2, getLineWidth() / 2); |
| int x = rBounds.x; |
| int y = rBounds.y; |
| int width = rBounds.width; |
| int height = rBounds.height; |
| |
| // start from top left "corner" and move clockwise |
| path.addArc(x, y, arcSize, arcSize, 90, 90); |
| path.lineTo(x, y + height - arcSize/2); |
| path.addArc(x, y+height-arcSize, arcSize, arcSize, 180, 90); |
| path.lineTo(x + width - arcSize/2, y + height); |
| path.addArc(x + width - arcSize, y+height-arcSize, arcSize, arcSize, 0, -90); |
| path.lineTo(x + width, y + height - arcSize/2); |
| path.addArc(x + width - arcSize, y, arcSize, arcSize, 0, 90); |
| path.close(); |
| |
| return path; |
| } |
| |
| /** |
| * @return Radius from RoundedRectangleBorder |
| */ |
| private int getCornerRadius() { |
| return ((RoundedRectangleBorder)getBorder()).getArcHeight(); |
| } |
| |
| } |
