1 /*******************************************************************************
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2 * Copyright (c) 2007, 2010 Association for Decentralized Information Management
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3 * in Industry THTH ry.
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4 * All rights reserved. This program and the accompanying materials
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5 * are made available under the terms of the Eclipse Public License v1.0
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6 * which accompanies this distribution, and is available at
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7 * http://www.eclipse.org/legal/epl-v10.html
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10 * VTT Technical Research Centre of Finland - initial API and implementation
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11 *******************************************************************************/
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12 package org.simantics.utils.ui.color;
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15 import java.util.ArrayList;
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16 import java.util.Collections;
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17 import java.util.HashMap;
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19 import org.eclipse.jface.layout.GridDataFactory;
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20 import org.eclipse.jface.util.IPropertyChangeListener;
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21 import org.eclipse.jface.util.PropertyChangeEvent;
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22 import org.eclipse.jface.viewers.CellEditor;
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23 import org.eclipse.jface.viewers.ColorCellEditor;
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24 import org.eclipse.jface.viewers.ICellEditorListener;
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25 import org.eclipse.jface.viewers.ICellModifier;
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26 import org.eclipse.jface.viewers.ILabelProviderListener;
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27 import org.eclipse.jface.viewers.ISelectionChangedListener;
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28 import org.eclipse.jface.viewers.IStructuredContentProvider;
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29 import org.eclipse.jface.viewers.IStructuredSelection;
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30 import org.eclipse.jface.viewers.ITableLabelProvider;
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31 import org.eclipse.jface.viewers.SelectionChangedEvent;
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32 import org.eclipse.jface.viewers.StructuredSelection;
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33 import org.eclipse.jface.viewers.TableViewer;
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34 import org.eclipse.jface.viewers.TextCellEditor;
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35 import org.eclipse.jface.viewers.Viewer;
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36 import org.eclipse.swt.SWT;
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37 import org.eclipse.swt.events.SelectionEvent;
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38 import org.eclipse.swt.events.SelectionListener;
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39 import org.eclipse.swt.graphics.Image;
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40 import org.eclipse.swt.graphics.RGB;
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41 import org.eclipse.swt.layout.FillLayout;
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42 import org.eclipse.swt.layout.GridLayout;
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43 import org.eclipse.swt.widgets.Button;
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44 import org.eclipse.swt.widgets.ColorDialog;
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45 import org.eclipse.swt.widgets.Composite;
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46 import org.eclipse.swt.widgets.Group;
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47 import org.eclipse.swt.widgets.Table;
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48 import org.eclipse.swt.widgets.TableColumn;
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49 import org.eclipse.swt.widgets.TableItem;
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52 * Widget to create and edit color gradients
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54 * @author Marko Luukkainen
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57 public class ColorGradientComposite extends Composite implements ISelectionChangedListener, ICellEditorListener, IPropertyChangeListener{
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58 private static int ICON_WIDTH = 36;
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59 private static int ICON_HEIGHT = 14;
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61 private static final String COLOR_ID = "Color";
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62 private static final String VALUE_ID = "Value";
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65 private ColorGradientCanvas gradientComposite;
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66 private TableViewer viewer;
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67 private Button addButton;
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68 private Button editButton;
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69 private Button removeButton;
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70 private Button rgbButton;
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71 private Button hsvButton;
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72 private int type = ColorGradient.RGB;
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74 private ArrayList<ColorValue> values = new ArrayList<ColorValue>();
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75 private HashMap<ColorValue,Image> images = new HashMap<ColorValue,Image>();
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77 public ColorGradientComposite(Composite parent, int style) {
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78 super(parent,style);
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79 GridLayout layout = new GridLayout(2,false);
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80 this.setLayout(layout);
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81 gradientComposite = new ColorGradientCanvas(this,SWT.HORIZONTAL);
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85 // Group typeComposite = new Group(this,SWT.NONE);
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86 // typeComposite.setText("Interpolation");
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87 Composite typeComposite = new Composite(this, SWT.NONE);
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89 typeComposite.setLayout(new GridLayout(1,false));
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90 rgbButton = new Button(typeComposite,SWT.RADIO);
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91 rgbButton.setSelection(true);
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92 rgbButton.addSelectionListener(new SelectionListener() {
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93 public void widgetDefaultSelected(SelectionEvent e) {
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96 public void widgetSelected(SelectionEvent e) {
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97 rgbButton.setSelection(true);
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98 hsvButton.setSelection(false);
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99 type = ColorGradient.RGB;
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100 gradientComposite.setGradient(new ColorGradient(values,type));
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103 rgbButton.setText("RGB");
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104 hsvButton = new Button(typeComposite,SWT.RADIO);
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105 hsvButton.addSelectionListener(new SelectionListener() {
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106 public void widgetDefaultSelected(SelectionEvent e) {
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109 public void widgetSelected(SelectionEvent e) {
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110 hsvButton.setSelection(true);
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111 rgbButton.setSelection(false);
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112 type = ColorGradient.HSV;
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113 gradientComposite.setGradient(new ColorGradient(values,type));
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116 hsvButton.setText("HSV");
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118 viewer = new TableViewer(this,SWT.SINGLE | SWT.BORDER | SWT.FULL_SELECTION);
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119 final Table table = viewer.getTable();
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121 table.setLinesVisible(true);
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122 table.setHeaderVisible(true);
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124 viewer.addSelectionChangedListener(this);
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125 viewer.addPostSelectionChangedListener(this);
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127 TableColumn column = new TableColumn(table,SWT.RIGHT);
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128 column.setText("Color");
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129 column.setWidth(60);
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130 column.setMoveable(false);
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131 column.setResizable(false);
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132 column = new TableColumn(table,SWT.LEFT);
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133 column.setText("Value");
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134 column.setWidth(300);
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135 column.setMoveable(false);
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137 viewer.setColumnProperties(new String[]{COLOR_ID,VALUE_ID});
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139 viewer.setLabelProvider(new TableLabelProvider());
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140 viewer.setContentProvider(new TableContentProvider());
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141 viewer.setInput(values);
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143 final ColorCellEditor colorEditor = new ColorCellEditor(table);
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144 final TextCellEditor valueEditor = new TextCellEditor(table);
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145 colorEditor.addListener(this);
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146 valueEditor.addListener(this);
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147 valueEditor.addPropertyChangeListener(this);
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148 viewer.setCellEditors(new CellEditor[]{colorEditor,valueEditor});
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150 viewer.setCellModifier(new TableCellEditorModifier());
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152 Composite buttonComposite = new Composite(this,SWT.NONE);
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154 buttonComposite.setLayout(new FillLayout(SWT.VERTICAL));
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156 addButton = new Button(buttonComposite,SWT.PUSH);
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157 addButton.setText("Add new color");
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158 addButton.addSelectionListener(new org.eclipse.swt.events.SelectionAdapter() {
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159 public void widgetSelected(org.eclipse.swt.events.SelectionEvent e) {
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160 ColorDialog dialog = new ColorDialog(ColorGradientComposite.this.getShell(), SWT.NONE);
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162 RGB rgb = dialog.open();
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164 Color c = new Color(rgb.red,rgb.green,rgb.blue);
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166 if (values.size() == 0) {
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168 } else if (values.size() == 1) {
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171 StructuredSelection selection = (StructuredSelection)viewer.getSelection();
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172 if (selection.size() == 1) {
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173 // add new color next to the selection
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174 ColorValue v = (ColorValue)selection.getFirstElement();
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175 int index = values.indexOf(v);
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176 if (index == values.size() -1) {
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179 value = (values.get(index+1).getValue()-values.get(index).getValue())*0.5;
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180 value += values.get(index).getValue();
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182 // add new color to largest gap
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185 for (int i = 0; i < values.size() -1; i++) {
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186 double v1 = values.get(i).getValue();
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187 double v2 = values.get(i+1).getValue();
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188 double vr = v2 -v1;
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194 value = values.get(index).getValue() + r *0.5;
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201 editButton = new Button(buttonComposite,SWT.PUSH);
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202 editButton.setText("Edit color");
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203 editButton.addSelectionListener(new org.eclipse.swt.events.SelectionAdapter() {
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204 public void widgetSelected(org.eclipse.swt.events.SelectionEvent e) {
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205 TableItem selection[] = table.getSelection();
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206 if (selection.length > 0) {
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207 TableItem selected = selection[0];
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208 Object obj = selected.getData();
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209 if (obj instanceof ColorValue) {
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210 ColorDialog dialog = new ColorDialog(ColorGradientComposite.this.getShell(), SWT.NONE);
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211 dialog.setRGB(getRGB(((ColorValue)obj).getColor()));
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212 RGB rgb = dialog.open();
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214 modifyColorValueColor((ColorValue)obj,rgb);
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220 editButton.setEnabled(false);
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221 removeButton = new Button(buttonComposite,SWT.PUSH);
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222 removeButton.setText("Remove color");
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223 removeButton.addSelectionListener(new org.eclipse.swt.events.SelectionAdapter() {
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224 public void widgetSelected(org.eclipse.swt.events.SelectionEvent e) {
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225 TableItem selection[] = table.getSelection();
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226 if (selection.length > 0) {
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227 TableItem selected = selection[0];
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228 Object o = selected.getData();
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229 if (o instanceof ColorValue) {
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230 Image i = images.get(o);
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239 removeButton.setEnabled(false);
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241 GridDataFactory.fillDefaults().span(1, 1).grab(true, false).align(SWT.FILL, SWT.CENTER).hint(SWT.DEFAULT, 32).applyTo(gradientComposite);
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242 GridDataFactory.fillDefaults().grab(true, false).align(SWT.FILL, SWT.CENTER).hint(SWT.DEFAULT, 100).applyTo(table);
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243 GridDataFactory.fillDefaults().grab(false, true).align(SWT.LEFT, SWT.FILL).applyTo(typeComposite);
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244 GridDataFactory.fillDefaults().span(1, 1).grab(true, false).align(SWT.FILL, SWT.TOP).applyTo(buttonComposite);
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249 public void addColor(Color color, double value) {
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250 addColor(new ColorValue(color,value));
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253 public void addColor(ColorValue value) {
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255 Image image = ColorIconCreator.createImage(value.getColor(), ICON_WIDTH, ICON_HEIGHT, SWT.BORDER);
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256 images.put(value,image);
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258 //viewer.refresh(true);
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261 private void updateWidgets() {
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262 Collections.sort(values,new ColorValueComparator());
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263 gradientComposite.setGradient(new ColorGradient(values,type));
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268 public ColorGradient getGradient() {
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269 return new ColorGradient(values,type);
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272 public void dispose() {
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273 for (Image i : images.values())
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278 public void setGradient(ColorGradient gradient) {
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279 for (Image i : images.values())
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283 type = gradient.getType();
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284 for (ColorValue value : gradient.getColorValues())
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286 if (type == ColorGradient.HSV) {
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287 rgbButton.setSelection(false);
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288 hsvButton.setSelection(true);
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289 } else if (type == ColorGradient.RGB) {
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290 hsvButton.setSelection(false);
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291 rgbButton.setSelection(true);
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296 private RGB getRGB(Color color) {
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297 RGB rgb = new RGB(color.getR(),color.getG(),color.getB());
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301 private void modifyColorValueValue(ColorValue cValue, String string) {
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303 double d = Double.parseDouble(string);
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304 values.remove(cValue);
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305 Image image = images.get(cValue);
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306 images.remove(cValue);
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307 ColorValue newCValue = new ColorValue(cValue.getColor(),d);
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308 values.add(newCValue);
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309 images.put(newCValue,image);
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312 } catch (NumberFormatException e) {
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317 private void modifyColorValueColor(ColorValue cValue, RGB rgb) {
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318 values.remove(cValue);
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319 Image oldImage = images.get(cValue);
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320 oldImage.dispose();
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321 images.remove(cValue);
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323 Color newColor = new Color(rgb.red,rgb.green,rgb.blue);
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324 ColorValue newCValue = new ColorValue(newColor,cValue.getValue());
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325 values.add(newCValue);
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326 Image newImage = ColorIconCreator.createImage(newColor, ICON_WIDTH, ICON_HEIGHT, SWT.BORDER);
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327 images.put(newCValue,newImage);
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332 * Enables and disables "Edit color" and "Remove color" buttons depending on selected item
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334 public void selectionChanged(SelectionChangedEvent event) {
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335 Object obj = ((IStructuredSelection)event.getSelection()).getFirstElement();
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337 editButton.setEnabled(false);
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338 removeButton.setEnabled(false);
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340 editButton.setEnabled(true);
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341 removeButton.setEnabled(true);
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347 * If item is opened for editing selectionChanged won't get null selection and
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348 * "Edit" & "Remove" buttons are enabled when there's no valid selection
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350 * There seems to be no way to get event when cellEditor is activated...
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353 public void applyEditorValue() {
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354 // TODO Auto-generated method stub
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355 editButton.setEnabled(false);
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356 removeButton.setEnabled(false);
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359 public void cancelEditor() {
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360 // TODO Auto-generated method stub
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361 editButton.setEnabled(false);
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362 removeButton.setEnabled(false);
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365 public void editorValueChanged(boolean oldValidState, boolean newValidState) {
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366 // TODO Auto-generated method stub
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367 editButton.setEnabled(false);
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368 removeButton.setEnabled(false);
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371 public void propertyChange(PropertyChangeEvent event) {
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372 editButton.setEnabled(false);
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373 removeButton.setEnabled(false);
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377 * @author Marko Luukkainen
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380 private class TableLabelProvider implements ITableLabelProvider {
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381 private ArrayList<ILabelProviderListener> listeners = new ArrayList<ILabelProviderListener>();
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384 * @see org.eclipse.jface.viewers.IBaseLabelProvider#dispose()
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386 public void dispose() {
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390 * @see org.eclipse.jface.viewers.ITableLabelProvider#getColumnImage(java.lang.Object, int)
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392 public Image getColumnImage(Object element, int columnIndex) {
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393 //System.out.println("TableLabelProvider.getColumnImage() " + element + " , " + columnIndex);
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394 ColorValue value = (ColorValue)element;
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395 if (columnIndex == 0)
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396 return images.get(value);
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400 * @see org.eclipse.jface.viewers.ITableLabelProvider#getColumnText(java.lang.Object, int)
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402 public String getColumnText(Object element, int columnIndex) {
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403 //System.out.println("TableLabelProvider.getColumnText() " + element + " , " + columnIndex);
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404 ColorValue value = (ColorValue)element;
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405 if (columnIndex == 1)
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406 return Double.toString(value.getValue());
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410 * @see org.eclipse.jface.viewers.IBaseLabelProvider#isLabelProperty(java.lang.Object, java.lang.String)
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412 public boolean isLabelProperty(Object element, String property) {
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416 * @see org.eclipse.jface.viewers.IBaseLabelProvider#addListener(org.eclipse.jface.viewers.ILabelProviderListener)
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418 public void addListener(ILabelProviderListener listener) {
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419 if(!listeners.contains(listener))
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420 listeners.add(listener);
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423 * @see org.eclipse.jface.viewers.IBaseLabelProvider#removeListener(org.eclipse.jface.viewers.ILabelProviderListener)
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425 public void removeListener(ILabelProviderListener listener) {
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426 listeners.remove(listener);
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433 * @author Marko Luukkainen
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436 private class TableContentProvider implements IStructuredContentProvider {
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437 public void dispose() {
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440 public Object[] getElements(Object inputElement) {
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441 ColorValue valueArray[] = new ColorValue[values.size()];
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442 // values.toArray(valueArray);
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443 // to get correct ordering (smallest last)
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444 // we must reverse the order of the list
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445 for (int i = 0; i < values.size(); i++) {
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446 valueArray[i] = values.get(values.size() - 1 -i);
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448 //System.out.println("TableContentProvider.getElements() : array size " + valueArray.length);
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451 public void inputChanged(Viewer viewer, Object oldInput, Object newInput) {
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452 //System.out.println("TableContentProvider.inputChanged()");
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458 * @author Marko Luukkainen
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461 private class TableCellEditorModifier implements ICellModifier {
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462 public boolean canModify(Object element, String property) {
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463 //System.out.println("TableCellEditorModifier.canModify()" + element + " , " + property);
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464 if (property == VALUE_ID)
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466 // this is commented out because it's hard so select the row when both rows have editors
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467 // now the color can be changed with "Edit Color" button
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468 //if (property == COLOR_ID)
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472 public Object getValue(Object element, String property) {
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473 //System.out.println("TableCellEditorModifier.getValue()" + element + " , " + property);
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474 if (property == VALUE_ID)
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475 return Double.toString(((ColorValue)element).getValue());
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476 if (property == COLOR_ID)
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477 return getRGB(((ColorValue)element).getColor());
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481 public void modify(Object element, String property, Object value) {
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482 TableItem item = (TableItem)element;
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483 Object obj = item.getData();
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484 //System.out.println("TableCellEditorModifier.modify()" + element + " , " + property + " , " + value);
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485 if (property == VALUE_ID)
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486 modifyColorValueValue((ColorValue)obj,(String)value);
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487 if (property == COLOR_ID)
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488 modifyColorValueColor((ColorValue)obj,(RGB)value);
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