Source Code Cross Referenced for PaletteCombo.java in  » GIS » udig-1.1 » net » refractions » udig » project » ui » internal » Java Source Code / Java DocumentationJava Source Code and Java Documentation

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Java Source Code / Java Documentation » GIS » udig 1.1 » net.refractions.udig.project.ui.internal 
Source Cross Referenced  Class Diagram Java Document (Java Doc) 


001:        /*
002:         * uDig - User Friendly Desktop Internet GIS client http://udig.refractions.net (C) 2004,
003:         * Refractions Research Inc. This library is free software; you can redistribute it and/or modify it
004:         * under the terms of the GNU Lesser General Public License as published by the Free Software
005:         * Foundation; version 2.1 of the License. This library is distributed in the hope that it will be
006:         * useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
007:         * FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more details.
008:         */
009:        package net.refractions.udig.project.ui.internal;
010:
011:        import java.awt.Color;
012:        import java.util.HashMap;
013:
014:        import net.refractions.udig.project.internal.Layer;
015:        import net.refractions.udig.ui.palette.ColourScheme;
016:
017:        import org.eclipse.jface.resource.JFaceResources;
018:        import org.eclipse.swt.SWT;
019:        import org.eclipse.swt.events.SelectionEvent;
020:        import org.eclipse.swt.events.SelectionListener;
021:        import org.eclipse.swt.graphics.Font;
022:        import org.eclipse.swt.graphics.GC;
023:        import org.eclipse.swt.graphics.Image;
024:        import org.eclipse.swt.graphics.Point;
025:        import org.eclipse.swt.graphics.RGB;
026:        import org.eclipse.swt.layout.GridData;
027:        import org.eclipse.swt.widgets.Button;
028:        import org.eclipse.swt.widgets.Combo;
029:        import org.eclipse.swt.widgets.Composite;
030:        import org.eclipse.swt.widgets.Control;
031:        import org.eclipse.swt.widgets.Label;
032:
033:        /**
034:         * @author ptozer TODO To change the template for this generated type comment go to Window -
035:         *         Preferences - Java - Code Style - Code Templates 
036:         * @author chorner
037:         */
038:        public class PaletteCombo {
039:            Point fExtent = null;
040:            Composite composite = null;
041:            Combo colourLetterCombo = null;
042:            Button colourIndicatorButton = null;
043:            Image image = null;
044:            Button checkbox = null;
045:            Layer layerReference = null;
046:            org.eclipse.swt.graphics.Color swtColour = null;
047:
048:            public PaletteCombo(Composite parent) {
049:                composite = parent; //new Composite(parent, SWT.NONE);
050:                fExtent = computeImageSize(composite);
051:                image = new Image(parent.getDisplay(), fExtent.x, fExtent.y);
052:            }
053:
054:            /**
055:             * @param colourToUse
056:             * @param layerNumber
057:             * @param colourLetters
058:             * @return
059:             */
060:            public Control getPaletteCombo(Layer layer) {
061:                layerReference = layer;
062:                String layerName = layer.getName();
063:                ColourScheme layerScheme = layer.getColourScheme();
064:                ColourScheme mapScheme = layer.getMapInternal()
065:                        .getColourScheme();
066:
067:                ColourScheme currentScheme;
068:                if (layerScheme != null && !(layerScheme.equals(mapScheme))) { //TODO: check logic
069:                    currentScheme = layerScheme;
070:                } else {
071:                    currentScheme = mapScheme;
072:                }
073:                String[] colourLetters = getColourLetters(currentScheme);
074:
075:                int currentColourIndex = layer.getMapInternal().getMapLayers()
076:                        .indexOf(layer);
077:                layerReference = layer;
078:
079:                //        GridLayout gridLayout = new GridLayout();
080:                //        gridLayout.numColumns = 4;
081:                //
082:                //        composite.setLayout(gridLayout);
083:
084:                Label layerLabel = new Label(composite, SWT.NONE);
085:                layerLabel.setText(layerName + ":"); //$NON-NLS-1$
086:
087:                GridData data = new GridData();
088:                data.horizontalSpan = 1;
089:                layerLabel.setLayoutData(data);
090:
091:                colourIndicatorButton = new Button(composite, SWT.FLAT
092:                        | SWT.TRAIL);
093:                updateButtonColourDisplay(currentColourIndex);
094:
095:                data = new GridData();
096:                colourIndicatorButton.setLayoutData(data);
097:
098:                colourLetterCombo = new Combo(composite, SWT.DROP_DOWN
099:                        | SWT.READ_ONLY);
100:                colourLetterCombo.setItems(colourLetters);
101:                colourLetterCombo.select(currentColourIndex);
102:                colourLetterCombo.addSelectionListener(new SelectionListener() {
103:                    public void widgetSelected(SelectionEvent e) {
104:                        int selectIndex = colourLetterCombo.getSelectionIndex();
105:                        updateButtonColourDisplay(selectIndex);
106:                    }
107:
108:                    public void widgetDefaultSelected(SelectionEvent e) {
109:                    }
110:                });
111:
112:                data = new GridData();
113:                colourLetterCombo.setLayoutData(data);
114:
115:                checkbox = new Button(composite, SWT.CHECK);
116:                checkbox.setSelection(true);
117:
118:                data = new GridData();
119:                checkbox.setLayoutData(data);
120:
121:                // composite.layout(true);
122:                return composite;
123:            }
124:
125:            /**
126:             * 
127:             */
128:            public void dispose() {
129:                // clean up the colours and images
130:                if (composite != null) {
131:                    Control[] kids = composite.getChildren();
132:                    for (int i = 0; i < kids.length; i++) {
133:                        Control c = kids[i];
134:                        if (c instanceof  Button) {
135:                            Image img = ((Button) c).getImage();
136:                            if (img != null) {
137:                                img.dispose();
138:                                ((Button) c).getImage().dispose();
139:                            }
140:                        }
141:                        c.dispose();
142:                    }
143:                }
144:
145:                fExtent = null;
146:                composite = null;
147:                colourLetterCombo = null;
148:                colourIndicatorButton = null;
149:                image = null;
150:                checkbox = null;
151:                layerReference = null;
152:            }
153:
154:            public void updateContents(ColourScheme scheme) {
155:                int index = colourLetterCombo.getSelectionIndex();
156:                String[] colourLetters = getColourLetters(scheme);
157:                colourLetterCombo.setItems(colourLetters);
158:                if (index == -1) {
159:                    index = colourLetters.length - 1;
160:                }
161:                colourLetterCombo.select(index);
162:                updateButtonColourDisplay(index);
163:            }
164:
165:            /**
166:             * @param index
167:             */
168:            protected void updateButtonColourDisplay(int index) {
169:                GC gc = new GC(image);
170:                gc.drawRectangle(0, 2, fExtent.x, fExtent.y);
171:
172:                if (swtColour != null)
173:                    swtColour.dispose();
174:
175:                Color clr = layerReference.getMapInternal().getColourScheme()
176:                        .getColour(index);
177:                swtColour = new org.eclipse.swt.graphics.Color(composite
178:                        .getDisplay(), new RGB(clr.getRed(), clr.getGreen(),
179:                        clr.getBlue()));
180:                gc.setBackground(swtColour);
181:                gc.fillRectangle(0, 2, fExtent.x, fExtent.y);
182:                gc.dispose();
183:                colourIndicatorButton.setImage(image);
184:            }
185:
186:            /**
187:             * @param window
188:             * @return
189:             */
190:            protected Point computeImageSize(Control window) {
191:                GC gc = new GC(window);
192:                Font f = JFaceResources.getFontRegistry().get(
193:                        JFaceResources.DEFAULT_FONT);
194:                gc.setFont(f);
195:                int height = gc.getFontMetrics().getHeight();
196:                gc.dispose();
197:                Point p = new Point(height * 3 - 6, height);
198:                return p;
199:            }
200:
201:            /**
202:             * @return Returns the colourLetterCombo.
203:             */
204:            public Combo getColourLetterCombo() {
205:                return colourLetterCombo;
206:            }
207:
208:            /**
209:             * @return Returns the checkbox.
210:             */
211:            public Button getCheckbox() {
212:                return checkbox;
213:            }
214:
215:            private String[] getColourLetters(ColourScheme scheme) {
216:                int size = scheme.getSizePalette();
217:                String[] allColourLetters = new String[] {
218:                        "a", "b", "c", "d", "e", "f", "g", "h", "i", "j", "k", "l", "m", "n", "o", "p", "q", "r", "s", "t", "u", "v", "w", "x", "y", "z" }; //$NON-NLS-1$ //$NON-NLS-2$ //$NON-NLS-3$ //$NON-NLS-4$ //$NON-NLS-5$ //$NON-NLS-6$ //$NON-NLS-7$ //$NON-NLS-8$ //$NON-NLS-9$ //$NON-NLS-10$ //$NON-NLS-11$ //$NON-NLS-12$ //$NON-NLS-13$ //$NON-NLS-14$ //$NON-NLS-15$ //$NON-NLS-16$ //$NON-NLS-17$ //$NON-NLS-18$ //$NON-NLS-19$ //$NON-NLS-20$ //$NON-NLS-21$ //$NON-NLS-22$ //$NON-NLS-23$ //$NON-NLS-24$ //$NON-NLS-25$ //$NON-NLS-26$
219:                String[] colourLetters;
220:                int[] colourIndex = scheme.getColourPalette().getColorScheme()
221:                        .getSampleScheme(size);
222:                colourLetters = new String[size];
223:                if (scheme.getSizeScheme() < size) {
224:                    scheme.setSizeScheme(size);
225:                }
226:                HashMap<Integer, Integer> colourMap = scheme.getColourMap();
227:                for (int i = 0; i < size; i++) {
228:                    int schemeIndex = colourMap.get(i);
229:                    int actualIndex = colourIndex[schemeIndex];
230:                    colourLetters[i] = allColourLetters[actualIndex];
231:                }
232:                return colourLetters;
233:            }
234:        }
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