Source Code Cross Referenced for GlassCapturePanel.java in  » Database-Client » executequery » org » underworldlabs » swing » Java Source Code / Java DocumentationJava Source Code and Java Documentation

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Java Source Code / Java Documentation » Database Client » executequery » org.underworldlabs.swing 
Source Cross Referenced  Class Diagram Java Document (Java Doc) 


001:        /*
002:         * GlassCapturePanel.java
003:         *
004:         * Created on 15 June 2006, 01:49
005:         *
006:         * To change this template, choose Tools | Template Manager
007:         * and open the template in the editor.
008:         */
009:
010:        package org.underworldlabs.swing;
011:
012:        import java.awt.Component;
013:        import java.awt.Container;
014:        import java.awt.Point;
015:        import java.awt.event.MouseEvent;
016:        import java.awt.event.MouseWheelEvent;
017:        import java.awt.event.MouseWheelListener;
018:        import java.util.ArrayList;
019:        import java.util.List;
020:        import javax.swing.JPanel;
021:        import javax.swing.SwingUtilities;
022:        import javax.swing.event.MouseInputListener;
023:
024:        /**
025:         *
026:         * @author   Takis Diakoumis
027:         * @version  $Revision: 1.2 $
028:         * @date     $Date: 2006/06/14 16:49:33 $
029:         */
030:        public class GlassCapturePanel extends JPanel implements 
031:                MouseInputListener, MouseWheelListener {
032:
033:            /** The primary component */
034:            protected Container mainComponent;
035:
036:            private List<GlassPaneSelectionListener> listeners;
037:
038:            /** Creates a new instance of GlassCapturePanel */
039:            public GlassCapturePanel(Container mainComponent) {
040:                this .mainComponent = mainComponent;
041:                addMouseMotionListener(this );
042:                addMouseListener(this );
043:                addMouseWheelListener(this );
044:                setOpaque(false);
045:            }
046:
047:            public void removeGlassPaneSelectionListener(
048:                    GlassPaneSelectionListener listener) {
049:                if (listeners == null) {
050:                    return;
051:                }
052:                listeners.remove(listener);
053:            }
054:
055:            public void addGlassPaneSelectionListener(
056:                    GlassPaneSelectionListener listener) {
057:                if (listeners == null) {
058:                    listeners = new ArrayList<GlassPaneSelectionListener>();
059:                }
060:                listeners.add(listener);
061:            }
062:
063:            private Component mouseEventTarget = null;
064:            private Component dragSource = null;
065:
066:            public void mouseWheelMoved(MouseWheelEvent e) {
067:                forwardMouseEvent(e);
068:            }
069:
070:            /**
071:             * When inactive, mouse events are forwarded as appropriate either to
072:             * the UI to activate the frame or to the underlying child component.
073:             */
074:            public void mousePressed(MouseEvent e) {
075:                forwardMouseEvent(e);
076:            }
077:
078:            /**
079:             * Forward the mouseEntered event to the underlying child container.
080:             * @see #mousePressed
081:             */
082:            public void mouseEntered(MouseEvent e) {
083:                forwardMouseEvent(e);
084:            }
085:
086:            /**
087:             * Forward the mouseMoved event to the underlying child container.
088:             * @see #mousePressed
089:             */
090:            public void mouseMoved(MouseEvent e) {
091:                forwardMouseEvent(e);
092:            }
093:
094:            /**
095:             * Forward the mouseExited event to the underlying child container.
096:             * @see #mousePressed
097:             */
098:            public void mouseExited(MouseEvent e) {
099:                forwardMouseEvent(e);
100:            }
101:
102:            /**
103:             * Ignore mouseClicked events.
104:             * @see #mousePressed
105:             */
106:            public void mouseClicked(MouseEvent e) {
107:                forwardMouseEvent(e);
108:            }
109:
110:            /**
111:             * Forward the mouseReleased event to the underlying child container.
112:             * @see #mousePressed
113:             */
114:            public void mouseReleased(MouseEvent e) {
115:                forwardMouseEvent(e);
116:            }
117:
118:            /**
119:             * Forward the mouseDragged event to the underlying child container.
120:             * @see #mousePressed
121:             */
122:            public void mouseDragged(MouseEvent e) {
123:                forwardMouseEvent(e);
124:            }
125:
126:            /**
127:             * Forward a mouse event to the current mouse target, setting it
128:             * if necessary.
129:             */
130:            private void forwardMouseEvent(MouseEvent e) {
131:                Component target = findComponentAt(mainComponent, e.getX(), e
132:                        .getY());
133:
134:                int id = e.getID();
135:
136:                if (e instanceof  MouseWheelEvent) {
137:                    if (target == null) {
138:                        return;
139:                    }
140:
141:                    MouseWheelEvent wheelEvent = (MouseWheelEvent) e;
142:
143:                    // do the retarget here -  not a focus event
144:                    if (target != mouseEventTarget) {
145:                        mouseEventTarget = target;
146:                    }
147:
148:                    Point p = SwingUtilities.convertPoint(mainComponent, e
149:                            .getX(), e.getY(), target);
150:
151:                    MouseWheelEvent retargeted = new MouseWheelEvent(target,
152:                            id, e.getWhen(), wheelEvent.getModifiers()
153:                                    | wheelEvent.getModifiersEx(), p.x, p.y,
154:                            wheelEvent.getClickCount(), wheelEvent
155:                                    .isPopupTrigger(), wheelEvent
156:                                    .getScrollType(), wheelEvent
157:                                    .getScrollAmount(), wheelEvent
158:                                    .getWheelRotation());
159:
160:                    target.dispatchEvent(retargeted);
161:
162:                }
163:
164:                switch (id) {
165:                case MouseEvent.MOUSE_ENTERED:
166:
167:                    if (target != mouseEventTarget) {
168:                        mouseEventTarget = target;
169:                    }
170:
171:                    retargetMouseEvent(id, e, mouseEventTarget);
172:                    break;
173:
174:                case MouseEvent.MOUSE_PRESSED:
175:
176:                    if (target != mouseEventTarget) {
177:                        mouseEventTarget = target;
178:                    }
179:
180:                    retargetMouseEvent(id, e, mouseEventTarget);
181:                    // Set the drag source in case we start dragging.
182:                    dragSource = target;
183:                    break;
184:
185:                case MouseEvent.MOUSE_EXITED:
186:                    retargetMouseEvent(id, e, mouseEventTarget);
187:                    break;
188:
189:                case MouseEvent.MOUSE_CLICKED:
190:                    retargetMouseEvent(id, e, mouseEventTarget);
191:                    break;
192:
193:                case MouseEvent.MOUSE_MOVED:
194:
195:                    if (target != mouseEventTarget) {
196:                        retargetMouseEvent(MouseEvent.MOUSE_EXITED, e,
197:                                mouseEventTarget);
198:                        mouseEventTarget = target;
199:                        retargetMouseEvent(MouseEvent.MOUSE_ENTERED, e,
200:                                mouseEventTarget);
201:                    }
202:
203:                    retargetMouseEvent(id, e, mouseEventTarget);
204:                    break;
205:
206:                case MouseEvent.MOUSE_DRAGGED:
207:                    retargetMouseEvent(id, e, dragSource);
208:                    break;
209:
210:                case MouseEvent.MOUSE_RELEASED:
211:                    retargetMouseEvent(id, e, mouseEventTarget);
212:                    break;
213:
214:                }
215:
216:                // notify listeners of the selection
217:                if (listeners != null) {
218:
219:                    for (int i = 0, n = listeners.size(); i < n; i++) {
220:                        listeners.get(i).glassPaneSelected(e);
221:                    }
222:
223:                }
224:
225:            }
226:
227:            /*
228:             * Find the lightweight child component which corresponds to the
229:             * specified location.  This is similar to the new 1.2 API in
230:             * Container, but we need to run on 1.1.  The other changes are
231:             * due to Container.findComponentAt's use of package-private data.
232:             */
233:            private Component findComponentAt(Container c, int x, int y) {
234:
235:                if (!c.contains(x, y)) {
236:                    return c;
237:                }
238:
239:                int ncomponents = c.getComponentCount();
240:                Component component[] = c.getComponents();
241:
242:                for (int i = 0; i < ncomponents; i++) {
243:                    Component comp = component[i];
244:                    Point loc = comp.getLocation();
245:
246:                    if ((comp != null) && (comp.contains(x - loc.x, y - loc.y))
247:                            &&
248:                            //(comp.getPeer() instanceof java.awt.peer.LightweightPeer) &&
249:                            comp.isDisplayable() && comp.isVisible()) {
250:
251:                        // found a component that intersects the point, see if there
252:                        // is a deeper possibility.
253:                        if (comp instanceof  Container) {
254:
255:                            Container child = (Container) comp;
256:                            Point childLoc = child.getLocation();
257:                            Component deeper = findComponentAt(child, x
258:                                    - childLoc.x, y - childLoc.y);
259:
260:                            if (deeper != null) {
261:                                return deeper;
262:                            }
263:
264:                        } else {
265:                            return comp;
266:                        }
267:
268:                    }
269:
270:                }
271:
272:                return c;
273:            }
274:
275:            /*
276:             * Dispatch an event clone, retargeted for the specified target.
277:             */
278:            protected void retargetMouseEvent(int id, MouseEvent e,
279:                    Component target) {
280:
281:                if (target == null) {
282:                    return;
283:                }
284:
285:                Point p = SwingUtilities.convertPoint(mainComponent, e.getX(),
286:                        e.getY(), target);
287:
288:                MouseEvent retargeted = new MouseEvent(target, id, e.getWhen(),
289:                        e.getModifiers() | e.getModifiersEx(), p.x, p.y, e
290:                                .getClickCount(), e.isPopupTrigger());
291:
292:                target.dispatchEvent(retargeted);
293:            }
294:
295:            /**
296:             * Returns the components below this glass pane.
297:             */
298:            public Container getComponentBelow() {
299:                return mainComponent;
300:            }
301:
302:        }
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