bundles/org.simantics.utils.ui/src/org/simantics/utils/ui/gfx/ColorImageDescriptor.java

   1 /*******************************************************************************
   2  * Copyright (c) 2007, 2011 Association for Decentralized Information Management in
   3  * Industry THTH ry.
   4  * All rights reserved. This program and the accompanying materials
   5  * are made available under the terms of the Eclipse Public License v1.0
   6  * which accompanies this distribution, and is available at
   7  * http://www.eclipse.org/legal/epl-v10.html
   8  *
   9  * Contributors:
  10  *     VTT Technical Research Centre of Finland - initial API and implementation
  11  *******************************************************************************/
  12 package org.simantics.utils.ui.gfx;
  13
  14 import org.eclipse.jface.resource.ImageDescriptor;
  15 import org.eclipse.swt.graphics.ImageData;
  16 import org.eclipse.swt.graphics.PaletteData;
  17
  18 /**
  19  * Colored rectangle with black borders.
  20  *
  21  * @author toni.kalajainen
  22  */
  23 public class ColorImageDescriptor extends ImageDescriptor {
  24     static final PaletteData PALETTEDATA = new PaletteData(0x00ff0000, 0x0000ff00, 0x000000ff);
  25
  26         int width;
  27         int height;
  28         int c;
  29         boolean selected;
  30
  31         public ColorImageDescriptor(int red, int green, int blue, int width, int height, boolean selected)
  32         {
  33         c = (red<<16) | (green<<8) | (blue);
  34                 this.width = width;
  35                 this.height = height;
  36                 this.selected = selected;
  37         }
  38
  39         @Override
  40         public ImageData getImageData(int zoom) {
  41                 int w = width;
  42                 int h = height;
  43                 if (zoom > 100) {
  44                         float s = zoom / 100.0f;
  45                         w = Math.round(width * s);
  46                         h = Math.round(height * s);
  47                 }
  48                 return getImageData(w, h);
  49         }
  50
  51         @Override
  52         public ImageData getImageData() {
  53                 return getImageData(100);
  54         }
  55
  56         private ImageData getImageData(int width, int height) {
  57                 ImageData id = new ImageData(width, height, 24, PALETTEDATA);
  58                 int cx = width / 2;
  59                 int cy = height / 2;
  60                 int dst = height * width / 23;
  61                 for (int x=0; x<width; x++) {
  62                         for (int y=0; y<height; y++) {
  63                                 int color = c;
  64                                 boolean border = x==0||x==width-1||y==0||y==height-1;
  65                                 if ( border ) color = 0;
  66                                 if (selected) {
  67                                         int dist = (x-cx)*(x-cx)+(y-cy)*(y-cy);
  68                                         if ( dist < dst ) color = 0xcccccc;
  69                                 }
  70                                 id.setPixel(x, y, color);
  71                         }
  72                 }
  73
  74                 return id;
  75         }
  76
  77         @Override
  78         public int hashCode() {
  79                 return c + 7*width + 13*height + (selected?234234:4235);
  80         }
  81
  82         @Override
  83         public boolean equals(Object obj) {
  84                 if ( obj instanceof ColorImageDescriptor == false ) return false;
  85                 ColorImageDescriptor other = (ColorImageDescriptor) obj;
  86                 if ( other.width!=width ) return false;
  87                 if ( other.height!=height ) return false;
  88                 if ( other.c!=c ) return false;
  89                 if ( other.selected!=selected ) return false;
  90                 return true;
  91         }
  92
  93 }