com.vistech.imageviewer
Class ImageCanvas2D

java.lang.Object
  |
  +--java.awt.Component
        |
        +--java.awt.Container
              |
              +--javax.swing.JComponent
                    |
                    +--com.vistech.imageviewer.ImageCanvas
                          |
                          +--com.vistech.imageviewer.ImageCanvas2D

All Implemented Interfaces:

ImageDisplay, ImageManipulator, java.awt.image.ImageObserver, ImagePrint, java.awt.MenuContainer, java.awt.print.Printable, java.io.Serializable

Direct Known Subclasses:

CompositeCanvas2D

public class ImageCanvas2D

extends ImageCanvas

implements ImageManipulator

Displays a manipulated image. This class doesn't perform image manipulation, but has several properties to hold the manipulation attributes. To manipulate an image, check out the AffineTransform attribute, concatenate it, and then check it in. Call the applyTransform() method to apply the resultinng transformation to the current image.

Version:

2.0 11 Nov 2001

Author:

Lawrence Rodrigues

See Also:

Serialized Form

Inner classes inherited from class javax.swing.JComponent

javax.swing.JComponent.AccessibleJComponent

Inner classes inherited from class java.awt.Container

java.awt.Container.AccessibleAWTContainer

Inner classes inherited from class java.awt.Component

java.awt.Component.AccessibleAWTComponent

Field Summary

protected java.awt.geom.AffineTransform	atx
protected java.awt.geom.AffineTransform	dispModeAtx
protected java.awt.geom.AffineTransform	flipAtx
protected int	interpolationType
protected int	magCenterX
protected int	magCenterY
protected double	magFactor
protected double	magFactorX
protected double	magFactorY
protected boolean	magOn
protected java.awt.Point	panOffset
protected boolean	rotateOn
protected double	rotationAngle
protected int	rotationCenterX
protected int	rotationCenterY
protected double	shearFactor
protected boolean	shearOn
protected double	shearX
protected double	shearY
protected java.awt.Point	zoomOffset

Fields inherited from class com.vistech.imageviewer.ImageCanvas

backgroundColor, bufferedImage, clipShape, dispGc, displayImage, displayMode, flipMode, foregroundColor, height, imageHeight, imageType, imageWidth, invertOn, offScrGc, offScrImage, originalImageType, paintFlag, PRINT_SIZE_ACTUAL, PRINT_SIZE_PAGE, printLoc, printMode, printSize, width

Fields inherited from class javax.swing.JComponent

accessibleContext, listenerList, 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 com.vistech.imageviewer.ImageDisplay

TYPE_AWT_IMAGE, TYPE_BUFFERED_IMAGE

Fields inherited from interface java.awt.print.Printable

NO_SUCH_PAGE, PAGE_EXISTS

Fields inherited from interface java.awt.image.ImageObserver

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

Constructor Summary

ImageCanvas2D()

Method Summary

void	applyTransform(java.awt.geom.AffineTransform atx) Applies a specified transformation to the current off screen image, and then displays it on the canvas.
protected void	applyTransform(java.awt.image.BufferedImage bi, java.awt.geom.AffineTransform atx) Applies a specified transformation to the input image, and then displays it on the canvas
static java.awt.geom.AffineTransform	createFlipTransform(int mode, int imageWid, int imageHt) Creates a flip transform.
boolean	doDisplayModeAndFlip(int imageWidth, int imageHeight) Applies the current display mode and flip mode settings to the displayed image.
int	getInterpolationType()
double	getMagFactor() Gets the magFactor property.
double	getMagFactorX() Gets the magFactorX property.
double	getMagFactorY() Gets the magFactorY property.
boolean	getMagOn()
java.awt.Point	getPanOffset() Returns the panOffset property.
double	getRotationAngle() Gets the rotation angle property.
double	getShearFactor()
double	getShearFactorX()
double	getShearFactorY()
java.awt.geom.AffineTransform	getTransform() Gets the transform property.
protected void	init()
static void	main(java.lang.String[] args)
void	reset() Paints the currently displayed image again with currently set display and flip modes
void	resetManipulation() Resets the manipulation attributes.
void	setInterpolationType(int interType) Sets the interpolationType property.
void	setMagFactor(double magFactor) Sets the magFactor property.
void	setMagFactorX(double magFactorX) Sets the magFactorX property.
void	setMagFactorY(double magFactorY) Sets the magFactorY property.
void	setMagOn(boolean onOff)
void	setPanOffset(java.awt.Point panOffset) Gets the panOffset property.
void	setRotationAngle(double rotationAngle) Sets the rotationAngle property.
void	setShearFactor(double shearFactor) Sets the shearFactor property.
void	setTransform(java.awt.geom.AffineTransform at) Sets the transform property.

Methods inherited from class com.vistech.imageviewer.ImageCanvas

addImageSentListener, clearImageCanvas, convertToAWTImage, convertToBufferedImage, createDisplayImage, doFlip, doFlip, draw, drawingDim, fireImageSentEvents, getAWTImage, getBackgroundColor, getBufferedImage, getDisplayedImage, getDisplayedImageGC, getDisplayMode, getFlipMode, getForegroundColor, getImageSize, getImageType, getInvert, getOffScreenImage, getPreferredSize, getPrintLocation, getPrintSize, imageUpdate, invert, paintComponent, paintImage, print, printImage, redraw, removeImageSentListener, setAWTImage, setBackgroundColor, setBufferedImage, setClip, setDisplayImage, setDisplayMode, setFlipMode, setForegroundColor, setImageType, setInvert, setOffScreenImage, setOffScrGc, setPrintLocation, setPrintSize

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, getAccessibleContext, getActionForKeyStroke, getActionMap, getAlignmentX, getAlignmentY, getAutoscrolls, getBorder, getBounds, getClientProperty, getComponentGraphics, getConditionForKeyStroke, getDebugGraphicsOptions, getGraphics, getHeight, getInputMap, getInputMap, getInputVerifier, getInsets, getInsets, getListeners, getLocation, getMaximumSize, getMinimumSize, getNextFocusableComponent, getRegisteredKeyStrokes, getRootPane, getSize, getToolTipLocation, getToolTipText, getToolTipText, getTopLevelAncestor, getUIClassID, getVerifyInputWhenFocusTarget, getVisibleRect, getWidth, getX, getY, grabFocus, hasFocus, hide, isDoubleBuffered, isFocusCycleRoot, isFocusTraversable, isLightweightComponent, isManagingFocus, isMaximumSizeSet, isMinimumSizeSet, isOpaque, isOptimizedDrawingEnabled, isPaintingTile, isPreferredSizeSet, isRequestFocusEnabled, isValidateRoot, paint, paintBorder, paintChildren, paintImmediately, paintImmediately, paramString, print, printAll, printBorder, printChildren, printComponent, processComponentKeyEvent, processFocusEvent, processKeyBinding, processKeyEvent, processMouseMotionEvent, putClientProperty, registerKeyboardAction, registerKeyboardAction, removeAncestorListener, removeNotify, removePropertyChangeListener, removePropertyChangeListener, removeVetoableChangeListener, repaint, repaint, requestDefaultFocus, requestFocus, resetKeyboardActions, reshape, revalidate, scrollRectToVisible, setActionMap, setAlignmentX, setAlignmentY, setAutoscrolls, setBackground, setBorder, setDebugGraphicsOptions, setDoubleBuffered, setEnabled, setFont, setForeground, setInputMap, setInputVerifier, setMaximumSize, setMinimumSize, setNextFocusableComponent, setOpaque, setPreferredSize, setRequestFocusEnabled, setToolTipText, setUI, setVerifyInputWhenFocusTarget, setVisible, unregisterKeyboardAction, update, updateUI

Methods inherited from class java.awt.Container

add, add, add, add, add, addContainerListener, addImpl, countComponents, deliverEvent, doLayout, findComponentAt, findComponentAt, getComponent, getComponentAt, getComponentAt, getComponentCount, getComponents, getLayout, insets, invalidate, isAncestorOf, layout, list, list, locate, minimumSize, paintComponents, preferredSize, printComponents, processContainerEvent, processEvent, remove, remove, removeAll, removeContainerListener, setLayout, validate, validateTree

Methods inherited from class java.awt.Component

action, add, addComponentListener, addFocusListener, addHierarchyBoundsListener, addHierarchyListener, addInputMethodListener, addKeyListener, addMouseListener, addMouseMotionListener, bounds, checkImage, checkImage, coalesceEvents, contains, createImage, createImage, disableEvents, dispatchEvent, enable, enableEvents, enableInputMethods, getBackground, getBounds, getColorModel, getComponentOrientation, getCursor, getDropTarget, getFont, getFontMetrics, getForeground, getGraphicsConfiguration, getInputContext, getInputMethodRequests, getLocale, getLocation, getLocationOnScreen, getName, getParent, getPeer, getSize, getToolkit, getTreeLock, gotFocus, handleEvent, inside, isDisplayable, isEnabled, isLightweight, isShowing, isValid, isVisible, keyDown, keyUp, list, list, list, location, lostFocus, mouseDown, mouseDrag, mouseEnter, mouseExit, mouseMove, mouseUp, move, nextFocus, paintAll, postEvent, prepareImage, prepareImage, processComponentEvent, processHierarchyBoundsEvent, processHierarchyEvent, processInputMethodEvent, processMouseEvent, remove, removeComponentListener, removeFocusListener, removeHierarchyBoundsListener, removeHierarchyListener, removeInputMethodListener, removeKeyListener, removeMouseListener, removeMouseMotionListener, repaint, repaint, repaint, resize, resize, setBounds, setBounds, setComponentOrientation, setCursor, setDropTarget, setLocale, setLocation, setLocation, setName, setSize, setSize, show, show, size, toString, transferFocus

Methods inherited from class java.lang.Object

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

Methods inherited from interface com.vistech.imageviewer.ImageDisplay

addMouseListener, addMouseMotionListener, addPropertyChangeListener, addVetoableChangeListener, draw, getAWTImage, getBufferedImage, getDisplayedImage, getDisplayMode, getFlipMode, getImageSize, getImageType, getInvert, getOffScreenImage, paintImage, removeMouseListener, removeMouseMotionListener, removePropertyChangeListener, removeVetoableChangeListener, setAWTImage, setBufferedImage, setClip, setCursor, setDisplayImage, setDisplayMode, setFlipMode, setImageType, setInvert, setOffScreenImage

Field Detail

atx

protected java.awt.geom.AffineTransform atx

dispModeAtx

protected java.awt.geom.AffineTransform dispModeAtx

flipAtx

protected java.awt.geom.AffineTransform flipAtx

panOffset

protected java.awt.Point panOffset

magOn

protected boolean magOn

magFactor

protected double magFactor

magFactorX

protected double magFactorX

magFactorY

protected double magFactorY

magCenterX

protected int magCenterX

magCenterY

protected int magCenterY

zoomOffset

protected java.awt.Point zoomOffset

rotationAngle

protected double rotationAngle

rotateOn

protected boolean rotateOn

rotationCenterX

protected int rotationCenterX

rotationCenterY

protected int rotationCenterY

shearOn

protected boolean shearOn

shearFactor

protected double shearFactor

shearX

protected double shearX

shearY

protected double shearY

interpolationType

protected int interpolationType

Constructor Detail

ImageCanvas2D

public ImageCanvas2D()

Method Detail

init

protected void init()

Overrides:

init in class ImageCanvas

setMagFactor

public void setMagFactor(double magFactor)

Description copied from interface: ImageManipulator

Sets the magFactor property.

Specified by:

setMagFactor in interface ImageManipulator

Following copied from interface: com.vistech.imageviewer.ImageManipulator

Parameters:

magFactor - the magnification factor.

getMagFactor

public double getMagFactor()

Description copied from interface: ImageManipulator

Gets the magFactor property.

Specified by:

getMagFactor in interface ImageManipulator

Following copied from interface: com.vistech.imageviewer.ImageManipulator

Returns:

the magFactor.

setMagFactorX

public void setMagFactorX(double magFactorX)

Description copied from interface: ImageManipulator

Sets the magFactorX property.

Specified by:

setMagFactorX in interface ImageManipulator

Following copied from interface: com.vistech.imageviewer.ImageManipulator

Parameters:

magFactor - the magnification factor in the X direction.

getMagFactorX

public double getMagFactorX()

Description copied from interface: ImageManipulator

Gets the magFactorX property.

Specified by:

getMagFactorX in interface ImageManipulator

Following copied from interface: com.vistech.imageviewer.ImageManipulator

Returns:

the magFactor.

setMagFactorY

public void setMagFactorY(double magFactorY)

Description copied from interface: ImageManipulator

Sets the magFactorY property.

Specified by:

setMagFactorY in interface ImageManipulator

Following copied from interface: com.vistech.imageviewer.ImageManipulator

Parameters:

magFactor - the magnification factor in the Y direction.

getMagFactorY

public double getMagFactorY()

Description copied from interface: ImageManipulator

Gets the magFactorY property.

Specified by:

getMagFactorY in interface ImageManipulator

Following copied from interface: com.vistech.imageviewer.ImageManipulator

Returns:

the magFactor.

setShearFactor

public void setShearFactor(double shearFactor)

Description copied from interface: ImageManipulator

Sets the shearFactor property.

Specified by:

setShearFactor in interface ImageManipulator

Following copied from interface: com.vistech.imageviewer.ImageManipulator

Parameters:

shearFactor - the shearFactor property.

getShearFactor

public double getShearFactor()

Specified by:

getShearFactor in interface ImageManipulator

Following copied from interface: com.vistech.imageviewer.ImageManipulator

Returns:

the shearFactor.

getShearFactorX

public double getShearFactorX()

getShearFactorY

public double getShearFactorY()

setRotationAngle

public void setRotationAngle(double rotationAngle)

Description copied from interface: ImageManipulator

Sets the rotationAngle property.

Specified by:

setRotationAngle in interface ImageManipulator

Following copied from interface: com.vistech.imageviewer.ImageManipulator

Parameters:

rotationAngle - the rotation angle

getRotationAngle

public double getRotationAngle()

Description copied from interface: ImageManipulator

Gets the rotation angle property.

Specified by:

getRotationAngle in interface ImageManipulator

Following copied from interface: com.vistech.imageviewer.ImageManipulator

Returns:

the rotation angle.

setPanOffset

public void setPanOffset(java.awt.Point panOffset)

Description copied from interface: ImageManipulator

Gets the panOffset property.

Specified by:

setPanOffset in interface ImageManipulator

Following copied from interface: com.vistech.imageviewer.ImageManipulator

Parameters:

panOffset - the offset by which the currently displayed image is moved from the previous position.

getPanOffset

public java.awt.Point getPanOffset()

Description copied from interface: ImageManipulator

Returns the panOffset property.

Specified by:

getPanOffset in interface ImageManipulator

Following copied from interface: com.vistech.imageviewer.ImageManipulator

Returns:

the panOffset.

setInterpolationType

public void setInterpolationType(int interType)

Description copied from interface: ImageManipulator

Sets the interpolationType property.

Specified by:

setInterpolationType in interface ImageManipulator

Following copied from interface: com.vistech.imageviewer.ImageManipulator

Parameters:

the - interpolation type

getInterpolationType

public int getInterpolationType()

Specified by:

getInterpolationType in interface ImageManipulator

getTransform

public java.awt.geom.AffineTransform getTransform()

Description copied from interface: ImageManipulator

Gets the transform property.

Specified by:

getTransform in interface ImageManipulator

Following copied from interface: com.vistech.imageviewer.ImageManipulator

Returns:

the current transform object.

setTransform

public void setTransform(java.awt.geom.AffineTransform at)

Description copied from interface: ImageManipulator

Sets the transform property.

Specified by:

setTransform in interface ImageManipulator

Following copied from interface: com.vistech.imageviewer.ImageManipulator

Parameters:

the - transform.

setMagOn

public void setMagOn(boolean onOff)

getMagOn

public boolean getMagOn()

doDisplayModeAndFlip

public boolean doDisplayModeAndFlip(int imageWidth,
                                    int imageHeight)
                             throws ImageCanvasException

Applies the current display mode and flip mode settings to the displayed image. The display mode and flip mode settings are applied by using the affine transformation. First computes an affine transformation for current display mode setting. It then creates a BufferedImage object size of which is compted using this transformation, and draws the current image on this BufferedImage. This method then calls the createFlipTransform() method to create an affine transformtion for the current flip mode setting. It then applies the flips transforamtion to the BufferedImage object, and then displays it.

Overrides:

doDisplayModeAndFlip in class ImageCanvas

Parameters:

imWid - the image width.

imHt - the image height.

createFlipTransform

public static java.awt.geom.AffineTransform createFlipTransform(int mode,
                                                                int imageWid,
                                                                int imageHt)

Creates a flip transform. It first creates a reflection and then translates to the current quadrant.

Parameters:

mode - the specified flip mode.

imageWid - the width of the BufferedImage.

imageHt - the height of the BufferedImage.

Returns:

the flip transformation encapsulated in the AffineTransform object.

applyTransform

protected void applyTransform(java.awt.image.BufferedImage bi,
                              java.awt.geom.AffineTransform atx)
                       throws ImageCanvasException

Applies a specified transformation to the input image, and then displays it on the canvas

Parameters:

bi - the buffered image to which the transformation is applied.

atx - the transformation to be applied.

applyTransform

public void applyTransform(java.awt.geom.AffineTransform atx)

Applies a specified transformation to the current off screen image, and then displays it on the canvas.

Specified by:

applyTransform in interface ImageManipulator

Parameters:

atx - the transformation to be applied.

reset

public void reset()

Description copied from class: ImageCanvas

Paints the currently displayed image again with currently set display and flip modes

Overrides:

reset in class ImageCanvas

resetManipulation

public void resetManipulation()

Resets the manipulation attributes. Applies the default attributes to display the current image.

Specified by:

resetManipulation in interface ImageManipulator

main

public static void main(java.lang.String[] args)