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The choice can now be resized with fix aspect ratio
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66 changes: 66 additions & 0 deletions
66
...ui.editor/src/org/yakindu/sct/ui/editor/policies/FixedAspectRatioResizableEditPolicy.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,66 @@ | ||
| /** | ||
| * Copyright (c) 2017 committers of YAKINDU 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: | ||
| * committers of YAKINDU - initial API and implementation | ||
| * | ||
| */ | ||
| package org.yakindu.sct.ui.editor.policies; | ||
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| import java.util.ArrayList; | ||
| import java.util.List; | ||
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| import org.eclipse.draw2d.PositionConstants; | ||
| import org.eclipse.gef.DragTracker; | ||
| import org.eclipse.gef.EditPartViewer; | ||
| import org.eclipse.gef.handles.ResizeHandle; | ||
| import org.eclipse.gef.tools.ResizeTracker; | ||
| import org.eclipse.gmf.runtime.diagram.ui.editparts.IGraphicalEditPart; | ||
| import org.eclipse.gmf.runtime.diagram.ui.editpolicies.ResizableEditPolicyEx; | ||
| import org.eclipse.swt.SWT; | ||
| import org.eclipse.swt.events.MouseEvent; | ||
|
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||
| /** | ||
| * | ||
| * @author andreas muelder - Initial contribution and API | ||
| * | ||
| */ | ||
| public class FixedAspectRatioResizableEditPolicy extends ResizableEditPolicyEx { | ||
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| @SuppressWarnings("rawtypes") | ||
| protected List createSelectionHandles() { | ||
| List list = new ArrayList(); | ||
| createMoveHandle(list); | ||
| createResizeHandle(list, PositionConstants.SOUTH_EAST); | ||
| createResizeHandle(list, PositionConstants.SOUTH_WEST); | ||
| createResizeHandle(list, PositionConstants.NORTH_WEST); | ||
| createResizeHandle(list, PositionConstants.NORTH_EAST); | ||
| return list; | ||
| } | ||
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| @Override | ||
| @SuppressWarnings({ "rawtypes", "unchecked" }) | ||
| protected void createResizeHandle(List handles, final int direction) { | ||
| handles.add(new ResizeHandle(getHost(), direction) { | ||
| @Override | ||
| protected DragTracker createDragTracker() { | ||
| return new ResizeTracker(getHost(), direction) { | ||
| @Override | ||
| public void mouseDrag(MouseEvent event, EditPartViewer viewer) { | ||
| event.stateMask |= SWT.SHIFT; | ||
| super.mouseDrag(event, viewer); | ||
| } | ||
| }; | ||
| }; | ||
| }); | ||
| } | ||
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| @Override | ||
| public IGraphicalEditPart getHost() { | ||
| return (IGraphicalEditPart) super.getHost(); | ||
| } | ||
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| } |