90
91 protected void startDrag(Transferable transferable, long[] formats, Map formatMap) {
92 DragGestureEvent trigger = getTrigger();
93 InputEvent triggerEvent = trigger.getTriggerEvent();
94
95 Point dragOrigin = new Point(trigger.getDragOrigin());
96 int extModifiers = (triggerEvent.getModifiers() | triggerEvent.getModifiersEx());
97 long timestamp = triggerEvent.getWhen();
98 int clickCount = ((triggerEvent instanceof MouseEvent) ? (((MouseEvent) triggerEvent).getClickCount()) : 1);
99
100 Component component = trigger.getComponent();
101 // For a lightweight component traverse up the hierarchy to the root
102 Point loc = component.getLocation();
103 Component rootComponent = component;
104 while (!(rootComponent instanceof Window)) {
105 dragOrigin.translate(loc.x, loc.y);
106 rootComponent = rootComponent.getParent();
107 loc = rootComponent.getLocation();
108 }
109
110 //It sure will be LWComponentPeer instance as rootComponent is a Window
111 PlatformWindow platformWindow = ((LWComponentPeer)rootComponent.getPeer()).getPlatformWindow();
112 long nativeViewPtr = CPlatformWindow.getNativeViewPtr(platformWindow);
113
114 // If there isn't any drag image make one of default appearance:
115 if (fDragImage == null)
116 this.setDefaultDragImage(component);
117
118 // Get drag image (if any) as BufferedImage and convert that to CImage:
119 Point dragImageOffset;
120
121 if (fDragImage != null) {
122 try {
123 fDragCImage = CImage.getCreator().createFromImageImmediately(fDragImage);
124 } catch(Exception e) {
125 // image creation may fail for any reason
126 throw new InvalidDnDOperationException("Drag image can not be created.");
127 }
128 if (fDragCImage == null) {
129 throw new InvalidDnDOperationException("Drag image is not ready.");
130 }
131
132 dragImageOffset = fDragImageOffset;
133 } else {
134
135 fDragCImage = null;
136 dragImageOffset = new Point(0, 0);
137 }
138
139 try {
140 // Create native dragging source:
141 final long nativeDragSource = createNativeDragSource(component, nativeViewPtr, transferable, triggerEvent,
142 (int) (dragOrigin.getX()), (int) (dragOrigin.getY()), extModifiers,
143 clickCount, timestamp, fDragCImage, dragImageOffset.x, dragImageOffset.y,
144 getDragSourceContext().getSourceActions(), formats, formatMap);
145
146 if (nativeDragSource == 0)
147 throw new InvalidDnDOperationException("");
148
149 setNativeContext(nativeDragSource);
150 }
151
152 catch (Exception e) {
153 throw new InvalidDnDOperationException("failed to create native peer: " + e);
154 }
155
156 SunDropTargetContextPeer.setCurrentJVMLocalSourceTransferable(transferable);
157
158 CCursorManager.getInstance().setCursor(getCursor());
159
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90
91 protected void startDrag(Transferable transferable, long[] formats, Map formatMap) {
92 DragGestureEvent trigger = getTrigger();
93 InputEvent triggerEvent = trigger.getTriggerEvent();
94
95 Point dragOrigin = new Point(trigger.getDragOrigin());
96 int extModifiers = (triggerEvent.getModifiers() | triggerEvent.getModifiersEx());
97 long timestamp = triggerEvent.getWhen();
98 int clickCount = ((triggerEvent instanceof MouseEvent) ? (((MouseEvent) triggerEvent).getClickCount()) : 1);
99
100 Component component = trigger.getComponent();
101 // For a lightweight component traverse up the hierarchy to the root
102 Point loc = component.getLocation();
103 Component rootComponent = component;
104 while (!(rootComponent instanceof Window)) {
105 dragOrigin.translate(loc.x, loc.y);
106 rootComponent = rootComponent.getParent();
107 loc = rootComponent.getLocation();
108 }
109
110 // If there isn't any drag image make one of default appearance:
111 if (fDragImage == null)
112 this.setDefaultDragImage(component);
113
114 // Get drag image (if any) as BufferedImage and convert that to CImage:
115 Point dragImageOffset;
116
117 if (fDragImage != null) {
118 try {
119 fDragCImage = CImage.getCreator().createFromImageImmediately(fDragImage);
120 } catch(Exception e) {
121 // image creation may fail for any reason
122 throw new InvalidDnDOperationException("Drag image can not be created.");
123 }
124 if (fDragCImage == null) {
125 throw new InvalidDnDOperationException("Drag image is not ready.");
126 }
127
128 dragImageOffset = fDragImageOffset;
129 } else {
130
131 fDragCImage = null;
132 dragImageOffset = new Point(0, 0);
133 }
134
135 try {
136 //It sure will be LWComponentPeer instance as rootComponent is a Window
137 PlatformWindow platformWindow = ((LWComponentPeer)rootComponent.getPeer()).getPlatformWindow();
138 long nativeViewPtr = CPlatformWindow.getNativeViewPtr(platformWindow);
139 if (nativeViewPtr == 0L) throw new InvalidDnDOperationException("");
140
141 // Create native dragging source:
142 final long nativeDragSource = createNativeDragSource(component, nativeViewPtr, transferable, triggerEvent,
143 (int) (dragOrigin.getX()), (int) (dragOrigin.getY()), extModifiers,
144 clickCount, timestamp, fDragCImage, dragImageOffset.x, dragImageOffset.y,
145 getDragSourceContext().getSourceActions(), formats, formatMap);
146
147 if (nativeDragSource == 0)
148 throw new InvalidDnDOperationException("");
149
150 setNativeContext(nativeDragSource);
151 }
152
153 catch (Exception e) {
154 throw new InvalidDnDOperationException("failed to create native peer: " + e);
155 }
156
157 SunDropTargetContextPeer.setCurrentJVMLocalSourceTransferable(transferable);
158
159 CCursorManager.getInstance().setCursor(getCursor());
160
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