org.freehep.swing.graphics
Class SquareSelectionPanel

java.lang.Object
  java.awt.Component
      java.awt.Container
          javax.swing.JComponent
              javax.swing.JPanel
                  org.freehep.swing.graphics.GraphicalSelectionPanel
                      org.freehep.swing.graphics.AbstractRegionSelectionPanel
                          org.freehep.swing.graphics.SquareSelectionPanel

All Implemented Interfaces:

Accessible, EventListener, ImageObserver, KeyListener, MenuContainer, MouseListener, MouseMotionListener, Serializable

public class SquareSelectionPanel

extends AbstractRegionSelectionPanel

A panel which selects a "square" region on the screen. The definition of "square" is that this region will retain the relative scaling of the x and y-axes.

Version:

$Id: SquareSelectionPanel.java,v 1.8 2001/03/05 13:42:40 duns Exp $

Author:

Charles Loomis, Mark Donszelmann

See Also:

Serialized Form

Source Code:

SquareSelectionPanel.java

Nested Class Summary

Nested classes inherited from class javax.swing.JPanel

JPanel.AccessibleJPanel

Nested classes inherited from class javax.swing.JComponent

JComponent.AccessibleJComponent

Nested classes inherited from class java.awt.Container

Container.AccessibleAWTContainer

Nested classes inherited from class java.awt.Component

Component.AccessibleAWTComponent, Component.BltBufferStrategy, Component.FlipBufferStrategy

Field Summary

Fields inherited from class org.freehep.swing.graphics.AbstractRegionSelectionPanel

activeCtrlPt, ctrlPtSize, hitThreshold, lastDrawnRect, lastDrawnRectValid, nCtrlPts, NO_CONTROL_POINT, rectToDraw, updateRect, visible, visibleGuides, xCtrlPts, yCtrlPts

Fields inherited from class org.freehep.swing.graphics.GraphicalSelectionPanel

actionMap, defaultModeAction, nextAction, previousAction, selectionActions, thickStroke, thinStroke

Fields inherited from class javax.swing.JComponent

accessibleContext, TOOL_TIP_TEXT_KEY, ui, UNDEFINED_CONDITION, WHEN_ANCESTOR_OF_FOCUSED_COMPONENT, WHEN_FOCUSED, WHEN_IN_FOCUSED_WINDOW

Fields inherited from class java.awt.Component

BOTTOM_ALIGNMENT, CENTER_ALIGNMENT, LEFT_ALIGNMENT, RIGHT_ALIGNMENT, TOP_ALIGNMENT

Fields inherited from interface java.awt.image.ImageObserver

ABORT, ALLBITS, ERROR, FRAMEBITS, HEIGHT, PROPERTIES, SOMEBITS, WIDTH

Constructor Summary

SquareSelectionPanel()
Creates a SquareSelectionPanel.

Method Summary

Cursor	getControlPointCursor(int index) Returns the NE, SE, NW and SW cursors for the four different directions and SquareCursor as the default
int	getNumberOfControlPoints() Return the number of control points,5---the four corners and one point in the center of the square.
void	initializeControlPoints(int x, int y) Initialize the control points based on the starting point (x,y).
boolean	isValidSelection() Determine if the selection is valid; regions of zero area are considered invalid.
AffineTransform	makeAffineTransform() Make the affine transform which corresponds to this "square" selection.
void	paintComponent(Graphics g) Repaint this component.
void	updateActiveControlPoint(int x, int y) Move the active control point to the point (x,y).

Methods inherited from class org.freehep.swing.graphics.AbstractRegionSelectionPanel

compassCursor, forceXCoordinateWithinBounds, forceYCoordinateWithinBounds, getVisibleGuides, keyReleased, makeOutlinePolygon, makeSelectionEvent, makeTransform, mouseDragged, mouseMoved, mousePressed, mouseReleased, moveActiveControlPoint, nearWhichControlPoint, repaintPanel, resetSelection, setVisibleGuides

Methods inherited from class org.freehep.swing.graphics.GraphicalSelectionPanel

addActionEntry, addActionEntry, addGraphicalSelectionListener, cancelPopupProcessing, fireGraphicalSelectionMade, getBorder, getPopupMenu, isProcessingPopup, keyPressed, keyTyped, mouseClicked, mouseEntered, mouseExited, removeGraphicalSelectionListener, setBorder, setBounds, setSelectionActionsEnabled, testPopupTrigger

Methods inherited from class javax.swing.JPanel

getAccessibleContext, getUI, getUIClassID, paramString, setUI, updateUI

Methods inherited from class javax.swing.JComponent

addAncestorListener, addNotify, addPropertyChangeListener, addPropertyChangeListener, addVetoableChangeListener, computeVisibleRect, contains, createToolTip, disable, enable, firePropertyChange, firePropertyChange, firePropertyChange, firePropertyChange, firePropertyChange, firePropertyChange, firePropertyChange, firePropertyChange, firePropertyChange, fireVetoableChange, getActionForKeyStroke, getActionMap, getAlignmentX, getAlignmentY, getAncestorListeners, getAutoscrolls, getBounds, getClientProperty, getComponentGraphics, getConditionForKeyStroke, getDebugGraphicsOptions, getDefaultLocale, getGraphics, getHeight, getInputMap, getInputMap, getInputVerifier, getInsets, getInsets, getListeners, getLocation, getMaximumSize, getMinimumSize, getNextFocusableComponent, getPreferredSize, getPropertyChangeListeners, getPropertyChangeListeners, getRegisteredKeyStrokes, getRootPane, getSize, getToolTipLocation, getToolTipText, getToolTipText, getTopLevelAncestor, getTransferHandler, getVerifyInputWhenFocusTarget, getVetoableChangeListeners, getVisibleRect, getWidth, getX, getY, grabFocus, isDoubleBuffered, isLightweightComponent, isManagingFocus, isMaximumSizeSet, isMinimumSizeSet, isOpaque, isOptimizedDrawingEnabled, isPaintingTile, isPreferredSizeSet, isRequestFocusEnabled, isValidateRoot, paint, paintBorder, paintChildren, paintImmediately, paintImmediately, print, printAll, printBorder, printChildren, printComponent, processComponentKeyEvent, processKeyBinding, processKeyEvent, processMouseMotionEvent, putClientProperty, registerKeyboardAction, registerKeyboardAction, removeAncestorListener, removeNotify, removePropertyChangeListener, removePropertyChangeListener, removeVetoableChangeListener, repaint, repaint, requestDefaultFocus, requestFocus, requestFocus, requestFocusInWindow, requestFocusInWindow, resetKeyboardActions, reshape, revalidate, scrollRectToVisible, setActionMap, setAlignmentX, setAlignmentY, setAutoscrolls, setBackground, setDebugGraphicsOptions, setDefaultLocale, setDoubleBuffered, setEnabled, setFont, setForeground, setInputMap, setInputVerifier, setMaximumSize, setMinimumSize, setNextFocusableComponent, setOpaque, setPreferredSize, setRequestFocusEnabled, setToolTipText, setTransferHandler, setUI, setVerifyInputWhenFocusTarget, setVisible, unregisterKeyboardAction, update

Methods inherited from class java.awt.Container

add, add, add, add, add, addContainerListener, addImpl, applyComponentOrientation, areFocusTraversalKeysSet, countComponents, deliverEvent, doLayout, findComponentAt, findComponentAt, getComponent, getComponentAt, getComponentAt, getComponentCount, getComponents, getContainerListeners, getFocusTraversalKeys, getFocusTraversalPolicy, getLayout, insets, invalidate, isAncestorOf, isFocusCycleRoot, isFocusCycleRoot, isFocusTraversalPolicySet, layout, list, list, locate, minimumSize, paintComponents, preferredSize, printComponents, processContainerEvent, processEvent, remove, remove, removeAll, removeContainerListener, setFocusCycleRoot, setFocusTraversalKeys, setFocusTraversalPolicy, setLayout, transferFocusBackward, transferFocusDownCycle, validate, validateTree

Methods inherited from class java.awt.Component

action, add, addComponentListener, addFocusListener, addHierarchyBoundsListener, addHierarchyListener, addInputMethodListener, addKeyListener, addMouseListener, addMouseMotionListener, addMouseWheelListener, bounds, checkImage, checkImage, coalesceEvents, contains, createImage, createImage, createVolatileImage, createVolatileImage, disableEvents, dispatchEvent, enable, enableEvents, enableInputMethods, getBackground, getBounds, getColorModel, getComponentListeners, getComponentOrientation, getCursor, getDropTarget, getFocusCycleRootAncestor, getFocusListeners, getFocusTraversalKeysEnabled, getFont, getFontMetrics, getForeground, getGraphicsConfiguration, getHierarchyBoundsListeners, getHierarchyListeners, getIgnoreRepaint, getInputContext, getInputMethodListeners, getInputMethodRequests, getKeyListeners, getLocale, getLocation, getLocationOnScreen, getMouseListeners, getMouseMotionListeners, getMouseWheelListeners, getName, getParent, getPeer, getSize, getToolkit, getTreeLock, gotFocus, handleEvent, hasFocus, hide, imageUpdate, inside, isBackgroundSet, isCursorSet, isDisplayable, isEnabled, isFocusable, isFocusOwner, isFocusTraversable, isFontSet, isForegroundSet, isLightweight, isShowing, isValid, isVisible, keyDown, keyUp, list, list, list, location, lostFocus, mouseDown, mouseDrag, mouseEnter, mouseExit, mouseMove, mouseUp, move, nextFocus, paintAll, postEvent, prepareImage, prepareImage, processComponentEvent, processFocusEvent, processHierarchyBoundsEvent, processHierarchyEvent, processInputMethodEvent, processMouseEvent, processMouseWheelEvent, remove, removeComponentListener, removeFocusListener, removeHierarchyBoundsListener, removeHierarchyListener, removeInputMethodListener, removeKeyListener, removeMouseListener, removeMouseMotionListener, removeMouseWheelListener, repaint, repaint, repaint, resize, resize, setBounds, setComponentOrientation, setCursor, setDropTarget, setFocusable, setFocusTraversalKeysEnabled, setIgnoreRepaint, setLocale, setLocation, setLocation, setName, setSize, setSize, show, show, size, toString, transferFocus, transferFocusUpCycle

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Constructor Detail

SquareSelectionPanel

public SquareSelectionPanel()

Creates a SquareSelectionPanel.

Method Detail

getNumberOfControlPoints

public int getNumberOfControlPoints()

Return the number of control points,5---the four corners and one point in the center of the square.

Specified by:

getNumberOfControlPoints in class AbstractRegionSelectionPanel

Returns:

5 the number of control points

getControlPointCursor

public Cursor getControlPointCursor(int index)

Returns the NE, SE, NW and SW cursors for the four different directions and SquareCursor as the default

Overrides:

getControlPointCursor in class AbstractRegionSelectionPanel

initializeControlPoints

public void initializeControlPoints(int x,
                                    int y)

Initialize the control points based on the starting point (x,y).

Specified by:

initializeControlPoints in class AbstractRegionSelectionPanel

Parameters:

x - x-coordinate of starting point

y - y-coordinate of starting point

updateActiveControlPoint

public void updateActiveControlPoint(int x,
                                     int y)

Move the active control point to the point (x,y).

Specified by:

updateActiveControlPoint in class AbstractRegionSelectionPanel

Parameters:

x - x-coordinate of the new point

y - y-coordinate of the new point

paintComponent

public void paintComponent(Graphics g)

Description copied from class: AbstractRegionSelectionPanel

Repaint this component. This must be overridden by subclasses so that the selection region appears correctly. The subclass should check the visibility flag (visible) to decide if any painting needs to be done.

Overrides:

paintComponent in class AbstractRegionSelectionPanel

Parameters:

g - Graphics context in which to draw

makeAffineTransform

public AffineTransform makeAffineTransform()

Make the affine transform which corresponds to this "square" selection.

Specified by:

makeAffineTransform in class AbstractRegionSelectionPanel

Returns:

AffineTransform which describes the selected region

isValidSelection

public boolean isValidSelection()

Determine if the selection is valid; regions of zero area are considered invalid.

Specified by:

isValidSelection in class AbstractRegionSelectionPanel

Returns:

flag indicating whether the region is valid