graphlab.gui.core.graph.vertex
Class GResizer

java.lang.Object
  graphlab.gui.core.graph.vertex.GResizer

All Implemented Interfaces:

PaintHandler, java.awt.event.MouseListener, java.awt.event.MouseMotionListener, java.util.EventListener

public class GResizer
extends java.lang.Object
implements PaintHandler, java.awt.event.MouseListener, java.awt.event.MouseMotionListener

Tool for resizing vertices on the graph. The user can select only one vertex at a time. The currently selected vertex will have resize handles attached to it. These are used to resize the width, height, or both width and height of the vertex.

Author:

Nathan Fiedler, Azin Azadi

Field Summary

static java.lang.String

IS_RESIZING_VERTEX

Constructor Summary

GResizer(BlackBoard b)

Method Summary

void	activate(Vertex vertex) Invoked when this tool is about to begin user interaction.
void	deactivate() Invoked when the tool is no longer being used.
ResizerListener	getResizeListener()
boolean	isMouseIsOnABox()
void	mouseClicked(java.awt.event.MouseEvent e)
void	mouseDragged(java.awt.event.MouseEvent me) If user is pressing on a resize handle, handle the resizing of the selected vertex.
void	mouseEntered(java.awt.event.MouseEvent e)
void	mouseExited(java.awt.event.MouseEvent e)
void	mouseMoved(java.awt.event.MouseEvent me)
void	mousePressed(java.awt.event.MouseEvent me) See if the user is pressing on a resize handle (if there's a selected vertex).
void	mouseReleased(java.awt.event.MouseEvent me)
void	paint(java.awt.Graphics g, java.awt.Component destinationComponent) Called after the view draws the graph.
static void	resizeVertex(Vertex vertex, int _dx, int _dy) resizes the size o the vertex by dx , dy according to some conditions,...
void	setMouseIsOnABox(boolean mouseIsOnABox)
void	setResizeListener(ResizerListener rl) a resize listener can listen to this resizer to know wheter the vertex resized

Methods inherited from class java.lang.Object

equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

IS_RESIZING_VERTEX

public static final java.lang.String IS_RESIZING_VERTEX

See Also:

Constant Field Values

Constructor Detail

GResizer

public GResizer(BlackBoard b)

Method Detail

activate

public void activate(Vertex vertex)

Invoked when this tool is about to begin user interaction. The tool should add itself as a listener to the view object and save the model reference for making changes to the graph.

deactivate

public void deactivate()

Invoked when the tool is no longer being used. The tool should remove itself from the view listener list and cease interaction with the user.

Note that this method may be called more than once between calls to activate().

mouseDragged

public void mouseDragged(java.awt.event.MouseEvent me)

If user is pressing on a resize handle, handle the resizing of the selected vertex.

Specified by:

mouseDragged in interface java.awt.event.MouseMotionListener

Parameters:

me - mouse event

resizeVertex

public static void resizeVertex(Vertex vertex,
                                int _dx,
                                int _dy)

resizes the size o the vertex by dx , dy according to some conditions,...

mouseMoved

public void mouseMoved(java.awt.event.MouseEvent me)

Specified by:

mouseMoved in interface java.awt.event.MouseMotionListener

mouseClicked

public void mouseClicked(java.awt.event.MouseEvent e)

Specified by:

mouseClicked in interface java.awt.event.MouseListener

mousePressed

public void mousePressed(java.awt.event.MouseEvent me)

See if the user is pressing on a resize handle (if there's a selected vertex). If not pressing on a handle (either because they didn't click on one or because there's no selected vertex) then check if the user is pressing on a vertex.

Specified by:

mousePressed in interface java.awt.event.MouseListener

Parameters:

me - mouse event for this canvas

mouseReleased

public void mouseReleased(java.awt.event.MouseEvent me)

Specified by:

mouseReleased in interface java.awt.event.MouseListener

mouseEntered

public void mouseEntered(java.awt.event.MouseEvent e)

Specified by:

mouseEntered in interface java.awt.event.MouseListener

mouseExited

public void mouseExited(java.awt.event.MouseEvent e)

Specified by:

mouseExited in interface java.awt.event.MouseListener

paint

public void paint(java.awt.Graphics g,
                  java.awt.Component destinationComponent)

Called after the view draws the graph. Gives the listener a chance to draw something to the view after everything else has been drawn. The order in which listeners are called is non-deterministic.

Specified by:

paint in interface PaintHandler

isMouseIsOnABox

public boolean isMouseIsOnABox()

setMouseIsOnABox

public void setMouseIsOnABox(boolean mouseIsOnABox)

getResizeListener

public ResizerListener getResizeListener()

setResizeListener

public void setResizeListener(ResizerListener rl)

a resize listener can listen to this resizer to know wheter the vertex resized

Parameters:

rl -