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8 package com.nightlabs.editor2d.util;
9
10 import java.awt.Color  ;
11 import java.awt.Font ;
12 import java.awt.GraphicsEnvironment ;
13 import java.util.Collection ;
14 import java.util.Iterator ;
15 import java.util.List ;
16
17 import org.apache.log4j.Logger;
18 import org.eclipse.draw2d.FigureCanvas;
19 import org.eclipse.draw2d.Viewport;
20 import org.eclipse.draw2d.geometry.Point;
21 import org.eclipse.draw2d.geometry.Rectangle;
22 import org.eclipse.gef.EditPart;
23 import org.eclipse.gef.EditPartViewer;
24 import org.eclipse.gef.GraphicalEditPart;
25 import org.eclipse.gef.editparts.ScalableFreeformRootEditPart;
26 import org.eclipse.gef.editparts.ZoomManager;
27 import org.eclipse.gef.ui.parts.ScrollingGraphicalViewer;
28 import org.eclipse.jface.viewers.StructuredSelection;
29 import org.eclipse.swt.graphics.GC;
30 import org.eclipse.swt.graphics.Image;
31 import org.eclipse.swt.widgets.Display;
32
33 import com.nightlabs.math.MathUtil;
34
35 public class EditorUtil
36 {
37 public static final Logger LOGGER = Logger.getLogger(EditorUtil.class);
38
39 public EditorUtil() {
40 super();
41 }
42
43 public static double calcRotation(Point mousePoint, Point centerPoint) {
44 return MathUtil.calcRotation(mousePoint.x, mousePoint.y, centerPoint.x, centerPoint.y);
45 }
46
47 public static Point toAbsolute(GraphicalEditPart part, Point point)
48 {
49 Point p = point.getCopy();
50 part.getFigure().translateToAbsolute(p);
51 p.translate(getScrollOffset(part));
52 return p;
53 }
54
55 public static Rectangle oldToAbsolute(GraphicalEditPart part, Rectangle rect)
56 {
57 Rectangle r = rect.getCopy();
58 part.getFigure().translateToAbsolute(r);
59 r.translate(getScrollOffset(part));
60 return r;
61 }
62
63 public static Point toRelative(GraphicalEditPart part, Point point)
64 {
65 Point p = point.getCopy();
66 part.getFigure().translateToRelative(p);
67 p.translate(getScrollOffset(part));
68 return p;
69 }
70
71 public static Rectangle toRelative(GraphicalEditPart part, Rectangle rect)
72 {
73 Rectangle r = rect.getCopy();
74 part.getFigure().translateToRelative(r);
75 r.translate(getScrollOffset(part));
76 return r;
77 }
78
79 public static Point getScrollOffset(EditPart part)
80 {
81 EditPartViewer viewer = part.getRoot().getViewer();
82 if (viewer instanceof ScrollingGraphicalViewer) {
83 ScrollingGraphicalViewer scrollViewer = (ScrollingGraphicalViewer) viewer;
84 FigureCanvas canvas = (FigureCanvas) viewer.getControl();
85 Viewport viewport = canvas.getViewport();
86 Point viewLocation = viewport.getViewLocation();
87 return viewLocation;
89 }
90 return new Point();
91 }
92
93 public static Rectangle toAbsolute(EditPart part, Rectangle rect)
94 {
95 Point xy = EditorUtil.toAbsolute(part, rect.x, rect.y);
96 Point wh = EditorUtil.toAbsolute(part, rect.width, rect.height);
97 Rectangle absoluteRect = new Rectangle(xy.x, xy.y, wh.x, wh.y);
98 Point scrollOffset = getScrollOffset(part);
99 Point absoluteScrollOffset = toAbsolute(part, scrollOffset.x, scrollOffset.y);
100 absoluteRect.translate(absoluteScrollOffset);
101 return absoluteRect;
102 }
103
104 public static double getZoom(EditPart part)
105 {
106 if (part.getRoot() instanceof ScalableFreeformRootEditPart) {
107 ScalableFreeformRootEditPart root = (ScalableFreeformRootEditPart) part.getRoot();
108 return root.getZoomManager().getZoom();
109 }
110 return 1.0;
111 }
112
113 public static ZoomManager getZoomManager(EditPart part)
114 {
115 if (part.getRoot() instanceof ScalableFreeformRootEditPart) {
116 return ((ScalableFreeformRootEditPart) part.getRoot()).getZoomManager();
117 }
118 return null;
119 }
120
121 public static Point toAbsolute(EditPart part, double x, double y)
123 {
124 double zoom = getZoom(part);
125 double newX = x / zoom;
126 double newY = y / zoom;
127 Point p = new Point(newX, newY);
128 return p;
130 }
131
132 public static Point toRelative(EditPart part, double x, double y)
134 {
135 double zoom = getZoom(part);
136 double newX = x * zoom;
137 double newY = y * zoom;
138 Point p = new Point(newX, newY);
139 return p;
141 }
142
143 public static int toRelative(EditPart part, double dimension) {
144 return (int)(dimension * getZoom(part));
145 }
146
147 public static Point getCenter(List editParts)
148 {
149 Rectangle totalBounds = new Rectangle();
150 int counter = 0;
151 for (Iterator it = editParts.iterator(); it.hasNext(); ) {
152 GraphicalEditPart editPart = (GraphicalEditPart) it.next();
153 Rectangle figureBounds = editPart.getFigure().getBounds();
154 if (counter == 0)
155 totalBounds = figureBounds.getCopy();
156 totalBounds = totalBounds.getUnion(figureBounds);
157 counter++;
158 }
159 return totalBounds.getCenter();
160 }
161
162 public static void selectEditParts(List editParts)
163 {
164 if (editParts == null)
165 throw new IllegalArgumentException ("Param editParts must not be null!");
166
167 EditPartViewer viewer= null;
168 if (!editParts.isEmpty()) {
169 Object o = editParts.get(0);
170 if (o instanceof EditPart) {
171 EditPart editPart = (EditPart) o;
172 viewer = editPart.getViewer();
173 }
174 }
175 if (viewer != null) {
176 StructuredSelection selection = new StructuredSelection(editParts);
177 viewer.deselectAll();
178 viewer.setSelection(selection);
179 }
180 }
181
182 public static void selectEditPart(EditPart editPart)
183 {
184 if (editPart == null)
185 throw new IllegalArgumentException ("Param editPart must not be null!");
186
187 EditPartViewer viewer = editPart.getViewer();
188 if (viewer != null) {
189 StructuredSelection selection = new StructuredSelection(editPart);
190 viewer.deselectAll();
191 viewer.setSelection(selection);
192 }
193 }
194
195 public static final Font DEFAULT_FONT = new Font ("Arial", Font.PLAIN, 24);
196
197 public static void zoomToRelativeRect(Rectangle rect, ZoomManager zoomManager)
198 {
199 if (rect == null)
200 throw new IllegalArgumentException ("Param rect must not be null!");
201
202 if (zoomManager == null)
203 throw new IllegalArgumentException ("Param zoomManager must not be null!");
204
205 Rectangle relativeZoomRectangle = rect.getCopy();
206 Rectangle clientArea = zoomManager.getViewport().getClientArea();
207 double zoom = zoomManager.getZoom();
208
209 double absoluteWidth = (double) relativeZoomRectangle.width;
210 double absoluteHeight = (double) relativeZoomRectangle.height;
211 double absoluteX = (double) relativeZoomRectangle.x;
212 double absoluteY = (double) relativeZoomRectangle.y;
213
214 double absoluteClientWidth = (double) clientArea.width / zoom;
215 double absoluteClientHeight = (double) clientArea.height / zoom;
216 double absoluteClientX = (double) clientArea.x / zoom;
217 double absoluteClientY = (double) clientArea.y / zoom;
218
219 double zoomX = absoluteClientWidth / absoluteWidth;
220 double zoomY = absoluteClientHeight / absoluteHeight;
221
222 double newZoom = Math.min(zoomX, zoomY);
223 double realZoom = (double) newZoom * zoom;
224 double newX = (double) (absoluteX + absoluteClientX) * realZoom;
225 double newY = (double) (absoluteY + absoluteClientY) * realZoom;
226
227 zoomManager.setZoom(realZoom);
228 double z = zoomManager.getZoom();
230 if (z != realZoom) {
231 newX = (double) (absoluteX + absoluteClientX) * z;
232 newY = (double) (absoluteY + absoluteClientY) * z;
233 }
234 zoomManager.getViewport().setViewLocation((int)newX, (int)newY);
235 zoomManager.getViewport().getUpdateManager().performUpdate();
236 }
237
238 public static void zoomToAbsoluteRect(Rectangle rect, ZoomManager zoomManager)
239 {
240 Rectangle relativeZoomRectangle = rect.getCopy();
241 Rectangle clientArea = zoomManager.getViewport().getClientArea();
242
243 double zoom = zoomManager.getZoom();
244 double absoluteWidth = (double) relativeZoomRectangle.width / zoom;
245 double absoluteHeight = (double) relativeZoomRectangle.height / zoom;
246 double absoluteX = (double) relativeZoomRectangle.x / zoom;
247 double absoluteY = (double) relativeZoomRectangle.y / zoom;
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 }
274
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