| /* |
| * Copyright 2000-2009 JetBrains s.r.o. |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| package com.intellij.uiDesigner.designSurface; |
| |
| import com.intellij.openapi.diagnostic.Logger; |
| import com.intellij.uiDesigner.FormEditingUtil; |
| import com.intellij.uiDesigner.radComponents.RadComponent; |
| import com.intellij.util.ui.UIUtil; |
| import org.jetbrains.annotations.NotNull; |
| |
| import java.awt.Component; |
| import java.awt.Point; |
| import java.awt.dnd.*; |
| import java.awt.event.InputEvent; |
| import java.awt.event.KeyEvent; |
| import java.awt.event.MouseEvent; |
| import java.util.ArrayList; |
| |
| /** |
| * @author Anton Katilin |
| * @author Vladimir Kondratyev |
| */ |
| public final class DragSelectionProcessor extends EventProcessor { |
| private static final Logger LOG = Logger.getInstance("#com.intellij.uiDesigner.designSurface.DragSelectionProcessor"); |
| |
| /** |
| * We have not start drag/cancel drop if mouse pointer trembles in small area |
| */ |
| public static final int TREMOR = 3; |
| |
| private final GuiEditor myEditor; |
| |
| private Point myPressPoint; |
| |
| private boolean myDragStarted; |
| |
| private final MyDragGestureRecognizer myDragGestureRecognizer; |
| private final MyDragSourceListener myDragSourceListener = new MyDragSourceListener(); |
| |
| public DragSelectionProcessor(@NotNull final GuiEditor editor) { |
| myEditor = editor; |
| myDragGestureRecognizer = new MyDragGestureRecognizer(DragSource.getDefaultDragSource(), |
| myEditor.getActiveDecorationLayer(), |
| DnDConstants.ACTION_COPY_OR_MOVE); |
| } |
| |
| public boolean isDragActive() { |
| return myDragStarted; |
| } |
| |
| protected boolean cancelOperation() { |
| if (!myDragStarted) { |
| return true; |
| } |
| // Try to drop selection at the point of mouse event. |
| //cancelDrag(); |
| myEditor.setDesignTimeInsets(2); |
| myEditor.getActiveDecorationLayer().removeFeedback(); |
| myEditor.repaintLayeredPane(); |
| return true; |
| } |
| |
| protected void processKeyEvent(final KeyEvent e) { |
| } |
| |
| protected void processMouseEvent(final MouseEvent e) { |
| if (e.getID() == MouseEvent.MOUSE_PRESSED) { |
| myPressPoint = e.getPoint(); |
| } |
| else if (e.getID() == MouseEvent.MOUSE_RELEASED) { |
| if (!myDragStarted) { |
| RadComponent component = FormEditingUtil.getRadComponentAt(myEditor.getRootContainer(), e.getX(), e.getY()); |
| if (component != null) { |
| if (UIUtil.isControlKeyDown(e)) { |
| component.setSelected(!component.isSelected()); |
| } |
| } |
| } |
| } |
| else if (e.getID() == MouseEvent.MOUSE_DRAGGED) { |
| if (!myDragStarted) { |
| if ((Math.abs(e.getX() - myPressPoint.getX()) > TREMOR || Math.abs(e.getY() - myPressPoint.getY()) > TREMOR)) { |
| ArrayList<InputEvent> eventList = new ArrayList<InputEvent>(); |
| eventList.add(e); |
| myDragGestureRecognizer.setTriggerEvent(e); |
| DragGestureEvent dge = new DragGestureEvent(myDragGestureRecognizer, |
| UIUtil.isControlKeyDown(e) ? DnDConstants.ACTION_COPY : DnDConstants.ACTION_MOVE, |
| myPressPoint, eventList); |
| |
| myDragStarted = true; |
| myEditor.getDropTargetListener().setUseDragDelta(true); |
| dge.startDrag(null, |
| DraggedComponentList.pickupSelection(myEditor, e.getPoint()), |
| myDragSourceListener); |
| } |
| } |
| } |
| } |
| |
| private static class MyDragGestureRecognizer extends DragGestureRecognizer { |
| public MyDragGestureRecognizer(DragSource ds, Component c, int sa) { |
| super(ds, c, sa); |
| } |
| |
| protected void registerListeners() { |
| } |
| |
| protected void unregisterListeners() { |
| } |
| |
| public void setTriggerEvent(final MouseEvent e) { |
| resetRecognizer(); |
| appendEvent(e); |
| } |
| } |
| |
| private class MyDragSourceListener extends DragSourceAdapter { |
| public void dropActionChanged(DragSourceDragEvent dsde) { |
| final int shiftDownMask = (dsde.getGestureModifiersEx() & KeyEvent.SHIFT_DOWN_MASK); |
| if (shiftDownMask != 0) { |
| myEditor.setDesignTimeInsets(12); |
| } |
| else { |
| myEditor.setDesignTimeInsets(2); |
| } |
| } |
| |
| public void dragDropEnd(DragSourceDropEvent dsde) { |
| myDragStarted = false; |
| myEditor.getDropTargetListener().setUseDragDelta(false); |
| myEditor.setDesignTimeInsets(2); |
| } |
| } |
| } |