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26
27 package org.nightlabs.editor2d.viewer.action;
28
29 import java.util.HashMap  ;
30 import java.util.Map ;
31
32 import org.eclipse.swt.SWT;
33 import org.eclipse.swt.events.DisposeEvent;
34 import org.eclipse.swt.events.DisposeListener;
35 import org.eclipse.swt.events.SelectionEvent;
36 import org.eclipse.swt.events.SelectionListener;
37 import org.eclipse.swt.graphics.Image;
38 import org.eclipse.swt.widgets.Composite;
39 import org.eclipse.swt.widgets.Control;
40 import org.nightlabs.base.action.AbstractContributionItem;
41 import org.nightlabs.base.custom.ColorCombo;
42 import org.nightlabs.editor2d.viewer.IZoomListener;
43 import org.nightlabs.editor2d.viewer.IZoomSupport;
44 import org.nightlabs.editor2d.viewer.ViewerPlugin;
45
46 public class ZoomContributionItem
47 extends AbstractContributionItem
48 {
49 public static final String ID = ZoomContributionItem.class.getName();
50
51 public ZoomContributionItem(IZoomSupport zoomSupport)
52 {
53 super(ID, ViewerPlugin.getResourceString("contribution.zoom.text"));
54 this.zoomSupport = zoomSupport;
55 zoomSupport.addZoomListener(zoomListener);
56 }
57
58 protected IZoomSupport zoomSupport = null;
59 public IZoomSupport getZoomSupport() {
60 return zoomSupport;
61 }
62 public void setZoomSupport(IZoomSupport zoomSupport) {
63 this.zoomSupport = zoomSupport;
64 }
65
66
75 protected ColorCombo combo = null;
76 protected Control createControl(Composite parent)
77 {
78 combo = new ColorCombo(parent, SWT.BORDER);
79
80 String initString = "1000%";
82 combo.add(null, initString, 0);
83 if (getToolItem() != null) {
84 getToolItem().setWidth(computeWidth(combo));
85 }
86 combo.remove(0);
87
88 initComboEntries(combo);
89 combo.addSelectionListener(selectionListener);
90 combo.addDisposeListener(disposeListener);
91 setText(zoomSupport.getZoom());
92 return combo;
93 }
94
95 protected void initComboEntries(ColorCombo c)
96 {
97 addEntry(c, null, " 25%", 0.25);
98 addEntry(c, null, " 50%", 0.5);
99 addEntry(c, null, " 100%", 1.0);
100 addEntry(c, null, " 200%", 2.0);
101 addEntry(c, null, " 300%", 3.0);
102 addEntry(c, null, " 400%", 4.0);
103 addEntry(c, null, " 500%", 5.0);
104 }
105
106 protected Map <String , Double > entry2ZoomValue = new HashMap <String , Double >();
107 protected void addEntry(ColorCombo c, Image img, String name, double zoomValue) {
108 c.add(img, name);
109 entry2ZoomValue.put(name, new Double (zoomValue));
110 }
111
112 protected DisposeListener disposeListener = new DisposeListener()
113 {
114 public void widgetDisposed(DisposeEvent e) {
115 zoomSupport.removeZoomListener(zoomListener);
116 combo.removeSelectionListener(selectionListener);
117 }
118 };
119
120 protected IZoomListener zoomListener = new IZoomListener()
121 {
122 public void zoomChanged(double zoom) {
123 setText(zoom);
124 }
125 };
126
127 protected void setText(double zoom)
128 {
129 int percentage = (int) Math.floor(zoom * 100);
130 if (combo != null)
131 combo.setText(""+percentage+" %");
132 }
133
134
138
142 protected SelectionListener selectionListener = new SelectionListener()
143 {
144 public void widgetDefaultSelected(SelectionEvent e) {
145 widgetSelected(e);
146 }
147 public void widgetSelected(SelectionEvent e)
148 {
149 ColorCombo c = (ColorCombo) e.getSource();
150 String text = c.getText();
151 if (text.contains("%")) {
152 StringBuffer sb = new StringBuffer (text);
153 int index = sb.lastIndexOf("%");
154 text = sb.substring(0, index);
155 }
156 try {
157 double newZoom = Double.parseDouble(text);
158 double realZoom = newZoom / 100;
159 getZoomSupport().setZoom(realZoom);
160 } catch (NumberFormatException nfe) {
161
162 }
163 }
164 };
165 }
166 |
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