edu.umd.cs.jazz.event
Class ZSelectionResizeHandler.ResizeHandles

java.lang.Object
  |
  +--edu.umd.cs.jazz.ZSceneGraphObject
        |
        +--edu.umd.cs.jazz.ZVisualComponent
              |
              +--edu.umd.cs.jazz.event.ZSelectionResizeHandler.ResizeHandles

All Implemented Interfaces:

java.lang.Cloneable, java.util.EventListener, java.io.Serializable, ZMouseListener, ZMouseMotionListener, ZSerializable

Enclosing class:

ZSelectionResizeHandler

protected class ZSelectionResizeHandler.ResizeHandles

extends ZVisualComponent

implements ZMouseListener, ZMouseMotionListener

Inner class used to render resize handles over a single component.

Terminology: A "compass position" is a pair of integers (x,y) drawn from the set {-1,0,1} that identifies a particular resize handle relative to a 3x3 square whose origin is the center. The upper-left resize handle is identified as (-1,-1), upper-right as (1,-1), etc.

See Also:

Serialized Form

penColor_DEFAULT

public final java.awt.Color penColor_DEFAULT

Default pen color

penColor

protected java.awt.Color penColor

Pen color for rendering of selection

handles

protected java.awt.geom.Rectangle2D[] handles

actual rectangles rendered for the handles

pressPt

protected java.awt.geom.Point2D pressPt

location of most recent mouse press on a resize handle, in global coordinates.

pressNode

protected ZNode pressNode

the node that was pressed

pressHandle

protected java.awt.Point pressHandle

relative compass location of resize handle of last press

highLightHandle

protected java.awt.Point highLightHandle

the handle to highlight

dragPt

protected java.awt.geom.Point2D dragPt

location of most recent drag, in global coordinates

selection

protected java.util.ArrayList selection

The current selected list

ZSelectionResizeHandler.ResizeHandles

public ZSelectionResizeHandler.ResizeHandles()

Default constructor

pick

public boolean pick(java.awt.geom.Rectangle2D pickRect,
                    ZSceneGraphPath path)

Indicates a pick in case the underlying visual components aren't picked

Overrides:

pick in class ZVisualComponent

Parameters:

pickRect - The rectangle that is picking this visual component in local coordinates.

path - The path through the scenegraph to the picked node. Modified by this call.

Returns:

true if the rectangle picks this visual component

See Also:

ZDrawingSurface.pick(int, int)

getHandle

protected java.awt.geom.Rectangle2D getHandle(double cx,
                                              double cy,
                                              double xLen,
                                              double yLen)

Render a single resize handle, centered at the given x,y position.

Returns:

the newly allocated rectangle that represents the geometry of the handle.

render

public void render(ZRenderContext ctx)

Renders the given ResizeHandles

Overrides:

render in class ZVisualComponent

Parameters:

ctx - The current render context

See Also:

ZVisualComponent.paint(Graphics2D)

computeBounds

protected void computeBounds()

The resize handles don't have logical bounds

Overrides:

computeBounds in class ZSceneGraphObject

contains

public java.awt.Point contains(double x,
                               double y)

Used by ZSelectionResizeHandler to determine whether or not the mouse is over a resize handle. Tests the given (x,y) position to determine if it is over a resize handle. If so, sets cp to the compass position of the handle, and returns true. Otherwise returns false.

Parameters:

x - x position, in local coordinates

y - y position, in local coordinates

Returns:

cp out parameter: compass point of handle, if found.

contains

public boolean contains(java.awt.geom.Rectangle2D rect)

Used by ZSelectionResizeHandler to determine whether or not the mouse is over a resize handle. Tests the given rectangle to determine if it is contained by a resize handle.

Returns:

True if one of the handles contains the point

mousePressed

public void mousePressed(ZMouseEvent e)

Mouse press event handler

Specified by:

mousePressed in interface ZMouseListener

mouseDragged

public void mouseDragged(ZMouseEvent e)

Mouse drag event handler

Specified by:

mouseDragged in interface ZMouseMotionListener

mouseReleased

public void mouseReleased(ZMouseEvent e)

Mouse release event handler

Specified by:

mouseReleased in interface ZMouseListener

mouseEntered

public void mouseEntered(ZMouseEvent e)

Invoked when the mouse enters a component.

Specified by:

mouseEntered in interface ZMouseListener

mouseExited

public void mouseExited(ZMouseEvent e)

Invoked when the mouse exits a component.

Specified by:

mouseExited in interface ZMouseListener

mouseClicked

public void mouseClicked(ZMouseEvent e)

Invoked when the mouse has been clicked on a component.

Specified by:

mouseClicked in interface ZMouseListener

mouseMoved

public void mouseMoved(ZMouseEvent e)

Invoked when the mouse button has been moved on a node (with no buttons no down).

Specified by:

mouseMoved in interface ZMouseMotionListener