diff options
Diffstat (limited to 'accessibility/workben/org/openoffice/accessibility/awb/canvas/MouseObserver.java')
-rw-r--r-- | accessibility/workben/org/openoffice/accessibility/awb/canvas/MouseObserver.java | 104 |
1 files changed, 104 insertions, 0 deletions
diff --git a/accessibility/workben/org/openoffice/accessibility/awb/canvas/MouseObserver.java b/accessibility/workben/org/openoffice/accessibility/awb/canvas/MouseObserver.java new file mode 100644 index 000000000000..3e7e2807906d --- /dev/null +++ b/accessibility/workben/org/openoffice/accessibility/awb/canvas/MouseObserver.java @@ -0,0 +1,104 @@ +package org.openoffice.accessibility.awb.canvas; + +import java.awt.Dimension; +import java.awt.event.InputEvent; +import java.awt.event.MouseEvent; +import java.awt.event.MouseListener; +import java.awt.event.MouseMotionListener; +import java.util.Iterator; +import javax.swing.tree.TreePath; + + +/** Observe the mouse and highlight shapes of the canvas when clicked. +*/ +public class MouseObserver + implements MouseListener, + MouseMotionListener +{ + public MouseObserver (Canvas aCanvas) + { + maCanvas = aCanvas; + maCanvas.addMouseListener (this); + maCanvas.addMouseMotionListener (this); + } + + + public void SetTree (javax.swing.JTree aTree) + { + maTree = aTree; + } + + public void mouseClicked (MouseEvent e) + {} + + public void mousePressed (MouseEvent e) + { + CanvasShape aObjectUnderMouse = FindCanvasShapeUnderMouse (e); + maTree.clearSelection(); + if (aObjectUnderMouse != null) + { + TreePath aPath = aObjectUnderMouse.getNodePath(); + if ((e.getModifiers() & InputEvent.CTRL_MASK) != 0) + maTree.expandPath (aPath); + // Selecting the entry will eventually highlight the shape. + maTree.setSelectionPath (aPath); + maTree.makeVisible (aPath); + } + } + + public void mouseReleased (MouseEvent e) + {} + + public void mouseEntered (MouseEvent e) + {} + + public void mouseExited (MouseEvent e) + {} + + public void mouseDragged (MouseEvent e) + { + } + + public void mouseMoved (MouseEvent e) + { + if ((e.getModifiers() & InputEvent.SHIFT_MASK) != 0) + maCanvas.HighlightObject (FindCanvasShapeUnderMouse (e)); + } + + + /** Search for the smallest shape that contains the mouse position. + */ + protected CanvasShape FindCanvasShapeUnderMouse (MouseEvent e) + { + Dimension aSmallestSize = null; + Iterator maShapeIterator = maCanvas.GetShapeIterator(); + CanvasShape aShapeUnderMouse = null; + while (maShapeIterator.hasNext()) + { + CanvasShape aShape = (CanvasShape)maShapeIterator.next(); + if (aShape != null) + if (aShape.Contains (e.getX(),e.getY())) + { + if (aShapeUnderMouse == null) + { + aSmallestSize = aShape.GetSize(); + aShapeUnderMouse = aShape; + } + else + { + Dimension aSize = aShape.GetSize(); + if (aSize.getWidth()<aSmallestSize.getWidth() + || aSize.getHeight()<aSmallestSize.getHeight()) + { + aSmallestSize = aSize; + aShapeUnderMouse = aShape; + } + } + } + } + return aShapeUnderMouse; + } + + private Canvas maCanvas; + private javax.swing.JTree maTree; +} |