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27
28 package org.nightlabs.editor2d.util;
29
30 import java.awt.Font  ;
31 import java.util.Iterator ;
32 import java.util.List ;
33
34 import org.apache.log4j.Logger;
35 import org.eclipse.draw2d.FigureCanvas;
36 import org.eclipse.draw2d.Viewport;
37 import org.eclipse.draw2d.geometry.Point;
38 import org.eclipse.draw2d.geometry.Rectangle;
39 import org.eclipse.gef.EditPart;
40 import org.eclipse.gef.EditPartViewer;
41 import org.eclipse.gef.GraphicalEditPart;
42 import org.eclipse.gef.editparts.ScalableFreeformRootEditPart;
43 import org.eclipse.gef.editparts.ZoomManager;
44 import org.eclipse.jface.viewers.StructuredSelection;
45 import org.nightlabs.math.MathUtil;
46
47 public class EditorUtil
48 {
49 public static final Logger LOGGER = Logger.getLogger(EditorUtil.class);
50
51 public EditorUtil() {
52 super();
53 }
54
55 public static double calcRotation(Point mousePoint, Point centerPoint) {
56 return MathUtil.calcRotation(mousePoint.x, mousePoint.y, centerPoint.x, centerPoint.y);
57 }
58
59 public static Point toAbsolute(GraphicalEditPart part, Point point)
60 {
61 Point p = point.getCopy();
62 part.getFigure().translateToAbsolute(p);
63 p.translate(getScrollOffset(part));
64 return p;
65 }
66
67 public static Rectangle oldToAbsolute(GraphicalEditPart part, Rectangle rect)
68 {
69 Rectangle r = rect.getCopy();
70 part.getFigure().translateToAbsolute(r);
71 r.translate(getScrollOffset(part));
72 return r;
73 }
74
75
83
91 public static Point getScrollOffset(EditPart part)
92 {
93 EditPartViewer viewer = part.getRoot().getViewer();
94 FigureCanvas canvas = (FigureCanvas) viewer.getControl();
95 Viewport viewport = canvas.getViewport();
96 Point viewLocation = viewport.getViewLocation();
97 return viewLocation;
98 }
99
100 public static Point getZoomedScrollOffset(EditPart part)
101 {
102 Point absoluteScrollOffset = getScrollOffset(part);
103 double zoom = getZoom(part);
104 double x = absoluteScrollOffset.x;
105 double y = absoluteScrollOffset.y;
106 if (absoluteScrollOffset.x != 0)
107 x = absoluteScrollOffset.x / zoom;
108 if (absoluteScrollOffset.y != 0)
109 y = absoluteScrollOffset.y / zoom;
110 return new Point(Math.rint(x), Math.rint(y));
111 }
112
113 public static Rectangle toAbsolute(EditPart part, Rectangle rect)
114 {
115 Point xy = EditorUtil.toAbsolute(part, rect.x, rect.y);
116 Point wh = EditorUtil.toAbsolute(part, rect.width, rect.height);
117 Rectangle absoluteRect = new Rectangle(xy.x, xy.y, wh.x, wh.y);
118 return absoluteRect;
119 }
120
121 public static Rectangle toAbsoluteWithScrollOffset(EditPart part, Rectangle rect)
122 {
123 Point xy = EditorUtil.toAbsolute(part, rect.x, rect.y);
124 Point wh = EditorUtil.toAbsolute(part, rect.width, rect.height);
125 Rectangle absoluteRect = new Rectangle(xy.x, xy.y, wh.x, wh.y);
126 absoluteRect.translate(getScrollOffset(part));
127 return absoluteRect;
128 }
129
130 public static Point toAbsolute(EditPart part, double x, double y)
131 {
132 double zoom = getZoom(part);
133 double newX = x / zoom;
134 double newY = y / zoom;
135 Point p = new Point(newX, newY);
136 return p;
137 }
138
139 public static Point toAbsoluteWithScrollOffset(EditPart part, double x, double y)
140 {
141 double zoom = getZoom(part);
142 double newX = x / zoom;
143 double newY = y / zoom;
144 Point p = new Point(newX, newY);
145 p.translate(getZoomedScrollOffset(part));
147 return p;
148 }
149
150 public static Point toRelative(EditPart part, double x, double y)
151 {
152 double zoom = getZoom(part);
153 double newX = x * zoom;
154 double newY = y * zoom;
155 Point p = new Point(newX, newY);
156 return p;
157 }
158
159 public static int toRelative(EditPart part, double dimension) {
160 return (int)(dimension * getZoom(part));
161 }
162
163 public static double getZoom(EditPart part)
164 {
165 if (part != null && part.getRoot() != null) {
166 if (part.getRoot() instanceof ScalableFreeformRootEditPart) {
167 ScalableFreeformRootEditPart root = (ScalableFreeformRootEditPart) part.getRoot();
168 return root.getZoomManager().getZoom();
169 }
170 }
171 return 1.0;
172 }
173
174 public static ZoomManager getZoomManager(EditPart part)
175 {
176 if (part.getRoot() instanceof ScalableFreeformRootEditPart) {
177 return ((ScalableFreeformRootEditPart) part.getRoot()).getZoomManager();
178 }
179 return null;
180 }
181
182 public static Point getCenter(List editParts)
183 {
184 Rectangle totalBounds = new Rectangle();
185 int counter = 0;
186 for (Iterator it = editParts.iterator(); it.hasNext(); ) {
187 GraphicalEditPart editPart = (GraphicalEditPart) it.next();
188 Rectangle figureBounds = editPart.getFigure().getBounds();
189 if (counter == 0)
190 totalBounds = figureBounds.getCopy();
191 totalBounds = totalBounds.getUnion(figureBounds);
192 counter++;
193 }
194 return totalBounds.getCenter();
195 }
196
197 public static void selectEditParts(List editParts)
198 {
199 if (editParts == null)
200 throw new IllegalArgumentException ("Param editParts must not be null!");
201
202 EditPartViewer viewer= null;
203 if (!editParts.isEmpty()) {
204 Object o = editParts.get(0);
205 if (o instanceof EditPart) {
206 EditPart editPart = (EditPart) o;
207 viewer = editPart.getViewer();
208 }
209 }
210 if (viewer != null) {
211 StructuredSelection selection = new StructuredSelection(editParts);
212 viewer.deselectAll();
213 viewer.setSelection(selection);
214 }
215 }
216
217 public static void selectEditPart(EditPart editPart)
218 {
219 if (editPart == null)
220 throw new IllegalArgumentException ("Param editPart must not be null!");
221
222 EditPartViewer viewer = editPart.getViewer();
223 if (viewer != null) {
224 StructuredSelection selection = new StructuredSelection(editPart);
225 viewer.deselectAll();
226 viewer.setSelection(selection);
227 }
228 }
229
230 public static final Font DEFAULT_FONT = new Font ("Arial", Font.PLAIN, 24);
231
232 public static void zoomToRelativeRect(Rectangle rect, ZoomManager zoomManager)
233 {
234 if (rect == null)
235 throw new IllegalArgumentException ("Param rect must not be null!");
236
237 if (zoomManager == null)
238 throw new IllegalArgumentException ("Param zoomManager must not be null!");
239
240 Rectangle relativeZoomRectangle = rect.getCopy();
241 Rectangle clientArea = zoomManager.getViewport().getClientArea();
242 double zoom = zoomManager.getZoom();
243
244 double absoluteWidth = (double) relativeZoomRectangle.width;
245 double absoluteHeight = (double) relativeZoomRectangle.height;
246 double absoluteX = (double) relativeZoomRectangle.x;
247 double absoluteY = (double) relativeZoomRectangle.y;
248
249 double absoluteClientWidth = (double) clientArea.width / zoom;
250 double absoluteClientHeight = (double) clientArea.height / zoom;
251 double absoluteClientX = (double) clientArea.x / zoom;
252 double absoluteClientY = (double) clientArea.y / zoom;
253
254 double zoomX = absoluteClientWidth / absoluteWidth;
255 double zoomY = absoluteClientHeight / absoluteHeight;
256
257 double newZoom = Math.min(zoomX, zoomY);
258 double realZoom = (double) newZoom * zoom;
259 double newX = (double) (absoluteX + absoluteClientX) * realZoom;
260 double newY = (double) (absoluteY + absoluteClientY) * realZoom;
261
262 zoomManager.setZoom(realZoom);
263 double z = zoomManager.getZoom();
265 if (z != realZoom) {
266 newX = (double) (absoluteX + absoluteClientX) * z;
267 newY = (double) (absoluteY + absoluteClientY) * z;
268 }
269 zoomManager.getViewport().setViewLocation((int)newX, (int)newY);
270 zoomManager.getViewport().getUpdateManager().performUpdate();
271 }
272
273 public static void zoomToAbsoluteRect(Rectangle rect, ZoomManager zoomManager)
274 {
275 Rectangle relativeZoomRectangle = rect.getCopy();
276 Rectangle clientArea = zoomManager.getViewport().getClientArea();
277
278 double zoom = zoomManager.getZoom();
279 double absoluteWidth = (double) relativeZoomRectangle.width / zoom;
280 double absoluteHeight = (double) relativeZoomRectangle.height / zoom;
281 double absoluteX = (double) relativeZoomRectangle.x / zoom;
282 double absoluteY = (double) relativeZoomRectangle.y / zoom;
283
284 double absoluteClientWidth = (double) clientArea.width / zoom;
285 double absoluteClientHeight = (double) clientArea.height / zoom;
286 double absoluteClientX = (double) clientArea.x / zoom;
287 double absoluteClientY = (double) clientArea.y / zoom;
288
289 double zoomX = absoluteClientWidth / absoluteWidth;
290 double zoomY = absoluteClientHeight / absoluteHeight;
291
292 double newZoom = Math.min(zoomX, zoomY);
293 double realZoom = (double) newZoom * zoom;
294 double newX = (double) (absoluteX + absoluteClientX) * realZoom;
295 double newY = (double) (absoluteY + absoluteClientY) * realZoom;
296
297 zoomManager.setZoom(realZoom);
298 double z = zoomManager.getZoom();
300 if (z != realZoom) {
301 newX = (double) (absoluteX + absoluteClientX) * z;
302 newY = (double) (absoluteY + absoluteClientY) * z;
303 }
304 zoomManager.getViewport().setViewLocation((int)newX, (int)newY);
305 zoomManager.getViewport().getUpdateManager().performUpdate();
306 }
307
308
325 }
326 |
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