org.freehep.swing.graphics
Class YSkewSelectionPanel

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.YSkewSelectionPanel

All Implemented Interfaces:

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

public class YSkewSelectionPanel

extends AbstractRegionSelectionPanel

A panel which selects a parallogram-shaped region in which two sides are parallel to the x-axis and the other two are skewed with respect to the y-axis.

Version:

$Id: YSkewSelectionPanel.java,v 1.8 2001/03/05 13:42:41 duns Exp $

Author:

Charles Loomis

See Also:

Serialized Form

Source Code:

YSkewSelectionPanel.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

YSkewSelectionPanel()
Creates a YSkewSelectionPanel.

Method Summary

Cursor	getControlPointCursor(int index) Returns the Cursor to be displayed for a certain control point and the default cursor for this SelectionPanel for an index of NO_CONTROL_POINT.
int	getNumberOfControlPoints() Get the number of control points 6---the four corners and the centerpoints of the two sides parallel to the x-axis.
void	initializeControlPoints(int x, int y) Initialize the control points based on the starting point (x,y).
boolean	isValidSelection() Check that the selection region is valid; regions with zero area are invalid.
AffineTransform	makeAffineTransform() Make the affine transform which corresponds to this skewed 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

YSkewSelectionPanel

public YSkewSelectionPanel()

Creates a YSkewSelectionPanel.

Method Detail

getNumberOfControlPoints

public int getNumberOfControlPoints()

Get the number of control points 6---the four corners and the centerpoints of the two sides parallel to the x-axis.

Specified by:

getNumberOfControlPoints in class AbstractRegionSelectionPanel

Returns:

6 the number of control points

getControlPointCursor

public Cursor getControlPointCursor(int index)

Description copied from class: AbstractRegionSelectionPanel

Returns the Cursor to be displayed for a certain control point and the default cursor for this SelectionPanel for an index of NO_CONTROL_POINT. Return of null will not change the cursor. Subclasses should override this method to provide a default cursor and/or to provide cursors for the different control points.

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 the starting point

y - y-coordinate of the 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 skewed selection.

Specified by:

makeAffineTransform in class AbstractRegionSelectionPanel

Returns:

AffineTransform which describes the selected region

isValidSelection

public boolean isValidSelection()

Check that the selection region is valid; regions with zero area are invalid.

Specified by:

isValidSelection in class AbstractRegionSelectionPanel

Returns:

flag indicating whether this region is valid