bundles/org.simantics.utils.ui/src/org/simantics/utils/ui/color/ColorComposite.java

   1 /*******************************************************************************\r
   2  * Copyright (c) 2007, 2010 Association for Decentralized Information Management\r
   3  * in Industry THTH ry.\r
   4  * All rights reserved. This program and the accompanying materials\r
   5  * are made available under the terms of the Eclipse Public License v1.0\r
   6  * which accompanies this distribution, and is available at\r
   7  * http://www.eclipse.org/legal/epl-v10.html\r
   8  *\r
   9  * Contributors:\r
  10  *     VTT Technical Research Centre of Finland - initial API and implementation\r
  11  *******************************************************************************/\r
  12 package org.simantics.utils.ui.color;\r
  13 \r
  14 import org.eclipse.swt.SWT;\r
  15 import org.eclipse.swt.events.MouseEvent;\r
  16 import org.eclipse.swt.events.MouseListener;\r
  17 import org.eclipse.swt.graphics.Rectangle;\r
  18 import org.eclipse.swt.layout.GridData;\r
  19 import org.eclipse.swt.layout.GridLayout;\r
  20 import org.eclipse.swt.widgets.Canvas;\r
  21 import org.eclipse.swt.widgets.Composite;\r
  22 import org.eclipse.swt.widgets.Label;\r
  23 import org.eclipse.swt.widgets.Text;\r
  24 \r
  25 /**\r
  26  * \r
  27  * Widget to edit colors\r
  28  * \r
  29  * @author Marko Luukkainen\r
  30  *\r
  31  */\r
  32 public class ColorComposite extends Composite{\r
  33         \r
  34         \r
  35         private Color color = new Color(255,255,255);\r
  36         private ColorGradient rGradient;\r
  37         private ColorGradient gGradient;\r
  38         private ColorGradient bGradient;\r
  39         private ColorGradient colorGradient;\r
  40         \r
  41         Text rText;\r
  42         Text gText;\r
  43         Text bText;\r
  44         ColorGradientCanvas rCanvas;\r
  45         ColorGradientCanvas gCanvas;\r
  46         ColorGradientCanvas bCanvas;\r
  47         ColorGradientCanvas colorCanvas;\r
  48         \r
  49         \r
  50         public ColorComposite(Composite parent, int style) {\r
  51                 super(parent,style);\r
  52                 updateGradients();\r
  53                 \r
  54                 GridLayout layout = new GridLayout();\r
  55                 layout.makeColumnsEqualWidth = false;\r
  56                 layout.numColumns = 3;\r
  57                 this.setLayout(layout);\r
  58                 \r
  59                 colorCanvas = new ColorGradientCanvas(this,SWT.BORDER|SWT.HORIZONTAL);\r
  60                 GridData colorCanvasData = new GridData();\r
  61                 colorCanvasData.horizontalSpan = 3;\r
  62                 colorCanvasData.heightHint = 32;\r
  63                 colorCanvasData.widthHint = 600;\r
  64                 colorCanvasData.grabExcessHorizontalSpace = true;\r
  65                 colorCanvas.setLayoutData(colorCanvasData);\r
  66                 \r
  67                 //layout data used with labels\r
  68                 GridData labelData = new GridData();\r
  69                 labelData.widthHint = 30;\r
  70                 //layout data used with gradients\r
  71                 GridData gradientData = new GridData();\r
  72                 gradientData.grabExcessHorizontalSpace = true;\r
  73                 gradientData.heightHint = 16;\r
  74                 gradientData.widthHint = 500;\r
  75                 //layout data used with texts\r
  76                 GridData textData = new GridData();\r
  77                 textData.widthHint = 30;\r
  78                 \r
  79                 \r
  80                 //Composite rComposite = new Composite(this,SWT.NONE);\r
  81                 //Layout rLayout = new FillLayout(SWT.HORIZONTAL);\r
  82                 //rComposite.setLayout(rLayout);\r
  83                 Label rLabel = new Label(this,SWT.NONE);\r
  84                 rLabel.setText("Red");\r
  85                 rLabel.setLayoutData(labelData);\r
  86                 rCanvas = new ColorGradientCanvas(this,SWT.BORDER|SWT.HORIZONTAL);\r
  87                 rCanvas.setLayoutData(gradientData);\r
  88                 rText = new Text(this,SWT.BORDER);\r
  89                 rText.setLayoutData(textData);\r
  90                 rCanvas.addMouseListener(new ColorSelectListener(rCanvas) {\r
  91                         void setValue(int value) {\r
  92                                 Color newColor = new Color(value,color.getG(),color.getB());\r
  93                                 updateColor(newColor);\r
  94                         };\r
  95                 });\r
  96                 \r
  97                 //Composite gComposite = new Composite(this,SWT.NONE);\r
  98                 //Layout gLayout = new FillLayout(SWT.HORIZONTAL);\r
  99                 //gComposite.setLayout(gLayout);\r
 100                 Label gLabel = new Label(this,SWT.NONE);\r
 101                 gLabel.setText("Green");\r
 102                 gLabel.setLayoutData(labelData);\r
 103                 gCanvas = new ColorGradientCanvas(this,SWT.BORDER|SWT.HORIZONTAL);\r
 104                 gCanvas.setLayoutData(gradientData);\r
 105                 gText = new Text(this,SWT.BORDER);\r
 106                 gText.setLayoutData(textData);\r
 107                 gCanvas.addMouseListener(new ColorSelectListener(gCanvas) {\r
 108                         void setValue(int value) {\r
 109                                 Color newColor = new Color(color.getR(),value,color.getB());\r
 110                                 updateColor(newColor);\r
 111                         };\r
 112                 });\r
 113                 \r
 114                 //Composite bComposite = new Composite(this,SWT.NONE);\r
 115                 //Layout bLayout = new FillLayout(SWT.HORIZONTAL);\r
 116                 //bComposite.setLayout(bLayout);\r
 117                 Label bLabel = new Label(this,SWT.NONE);\r
 118                 bLabel.setText("Blue");\r
 119                 bLabel.setLayoutData(labelData);\r
 120                 bCanvas = new ColorGradientCanvas(this,SWT.BORDER|SWT.HORIZONTAL);\r
 121                 bCanvas.setLayoutData(gradientData);\r
 122                 bText = new Text(this,SWT.BORDER);\r
 123                 bText.setLayoutData(textData);\r
 124                 bCanvas.addMouseListener(new ColorSelectListener(bCanvas) {\r
 125                         void setValue(int value) {\r
 126                                 Color newColor = new Color(color.getR(),color.getG(),value);\r
 127                                 updateColor(newColor);\r
 128                         };\r
 129                 });\r
 130                 updateWidgets();\r
 131                 \r
 132         }\r
 133         \r
 134         private abstract class ColorSelectListener implements MouseListener {\r
 135                 private Canvas canvas;\r
 136                 \r
 137                 public ColorSelectListener(Canvas canvas) {\r
 138                         this.canvas = canvas;\r
 139                 }\r
 140                 public void mouseDoubleClick(MouseEvent e) {\r
 141                                                 \r
 142                 }\r
 143                 public void mouseDown(MouseEvent e) {\r
 144                         Rectangle r = this.canvas.getBounds();\r
 145                         double d = (double)e.x / (double)r.width;\r
 146                         int value = (int)(d * 255);\r
 147                         if (value < 0)\r
 148                                 value = 0;\r
 149                         if (value > 255)\r
 150                                 value = 255;\r
 151                         setValue(value);\r
 152                         \r
 153                 }\r
 154                 public void mouseUp(MouseEvent e) {\r
 155                         \r
 156                 }\r
 157                 \r
 158                 abstract void setValue(int value);\r
 159         }\r
 160         \r
 161         private void updateColor(Color color) {\r
 162                 this.color = color;\r
 163                 updateWidgets();\r
 164         }\r
 165         \r
 166         private void updateGradients() {\r
 167                 rGradient = new ColorGradient(new ColorValue[]{\r
 168                                         new ColorValue(new Color(0,color.getG(),color.getB()),0.0),\r
 169                                         new ColorValue(new Color(255,color.getG(),color.getB()),1.0)});\r
 170                 gGradient = new ColorGradient(new ColorValue[]{\r
 171                                 new ColorValue(new Color(color.getR(),0,color.getB()),0.0),\r
 172                                 new ColorValue(new Color(color.getR(),255,color.getB()),1.0)});\r
 173                 bGradient = new ColorGradient(new ColorValue[]{\r
 174                                 new ColorValue(new Color(color.getR(),color.getG(),0),0.0),\r
 175                                 new ColorValue(new Color(color.getR(),color.getG(),255),1.0)});\r
 176                 colorGradient = new ColorGradient(new ColorValue[]{\r
 177                                 new ColorValue(new Color(color.getR(),color.getG(),color.getB()),0.0)});\r
 178         \r
 179         }\r
 180         \r
 181         private void updateWidgets() {\r
 182                 updateGradients();\r
 183                 rCanvas.setGradient(rGradient);\r
 184                 gCanvas.setGradient(gGradient);\r
 185                 bCanvas.setGradient(bGradient);\r
 186                 colorCanvas.setGradient(colorGradient);\r
 187                 rText.setText(Integer.toString(color.getR()));\r
 188                 gText.setText(Integer.toString(color.getG()));\r
 189                 bText.setText(Integer.toString(color.getB()));  \r
 190         }\r
 191 }\r