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      1 /*
      2  * Copyright (C) 2008 The Android Open Source Project
      3  *
      4  * Licensed under the Eclipse Public License, Version 1.0 (the "License");
      5  * you may not use this file except in compliance with the License.
      6  * You may obtain a copy of the License at
      7  *
      8  *      http://www.eclipse.org/org/documents/epl-v10.php
      9  *
     10  * Unless required by applicable law or agreed to in writing, software
     11  * distributed under the License is distributed on an "AS IS" BASIS,
     12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
     13  * See the License for the specific language governing permissions and
     14  * limitations under the License.
     15  */
     16 
     17 package com.android.ide.eclipse.adt.internal.editors.layout.parts;
     18 
     19 import com.android.ide.eclipse.adt.internal.editors.layout.parts.UiElementsEditPartFactory.IOutlineProvider;
     20 
     21 import org.eclipse.draw2d.ColorConstants;
     22 import org.eclipse.draw2d.Figure;
     23 import org.eclipse.draw2d.Graphics;
     24 import org.eclipse.draw2d.geometry.Rectangle;
     25 import org.eclipse.swt.SWT;
     26 
     27 
     28 /**
     29  * The figure used to draw basic elements.
     30  * <p/>
     31  * The figure is totally empty and transparent except for the selection border.
     32  *
     33  * @since GLE1
     34  */
     35 class ElementFigure extends Figure {
     36 
     37     private boolean mIsSelected;
     38     private Rectangle mInnerBounds;
     39     private final IOutlineProvider mProvider;
     40 
     41     public ElementFigure(IOutlineProvider provider) {
     42         mProvider = provider;
     43         setOpaque(false);
     44     }
     45 
     46     public void setSelected(boolean isSelected) {
     47         if (isSelected != mIsSelected) {
     48             mIsSelected = isSelected;
     49             repaint();
     50         }
     51     }
     52 
     53     @Override
     54     public void setBounds(Rectangle rect) {
     55         super.setBounds(rect);
     56 
     57         mInnerBounds = getBounds().getCopy();
     58         if (mInnerBounds.width > 0) {
     59             mInnerBounds.width--;
     60         }
     61         if (mInnerBounds.height > 0) {
     62             mInnerBounds.height--;
     63         }
     64     }
     65 
     66     public Rectangle getInnerBounds() {
     67         return mInnerBounds;
     68     }
     69 
     70     @Override
     71     protected void paintBorder(Graphics graphics) {
     72         super.paintBorder(graphics);
     73 
     74         if (mIsSelected || (mProvider != null && mProvider.hasOutline())) {
     75             graphics.setLineWidth(1);
     76             graphics.setLineStyle(SWT.LINE_SOLID);
     77             graphics.setForegroundColor(mIsSelected ? ColorConstants.red : ColorConstants.white);
     78             graphics.drawRectangle(getInnerBounds());
     79         }
     80     }
     81 }
     82