japlot.jaxodraw

Class JaxoZoom

java.lang.Object

japlot.jaxodraw.JaxoZoom

public class JaxoZoom
extends java.lang.Object

A zoom on the canvas.

Constructor Summary

Constructors

Constructor and Description
JaxoZoom() Constructor.

Method Summary

Modifier and Type	Method and Description
void	adjustZoomWindow(int oldX, int oldY, int newX, int newY) Adjusts the zoom when the zoom window gets dragged.
void	dragZoomWindow(int eX, int eY) Drags the zoom when the zoom window gets dragged.
void	drawZoomWindow() Draws the zoom by clipping to the zoom window and scaling the background image.
void	eraseZoomWindow() Erases the zoom window.
java.awt.Image	getBackground() Returns the background image of the zoom.
int	getCanvasHeight() Returns the height of the canvas (the portion of the image that is visible).
int	getCanvasWidth() Returns the width of the canvas (the portion of the image that is visible).
java.awt.Graphics	getGraphics() Returns the graphics context of the zoom.
int	getImageHeight() Returns the height of the image.
int	getImageWidth() Returns the width of the image.
int	getZoomFactor() Returns the zoom factor.
int	getZoomWindowHeight() Returns the height of the zoom window.
int	getZoomWindowWidth() Returns the width of the zoom window.
int	getZoomWindowX() Returns the x-coordinate of the ZoomWindow's origin.
int	getZoomWindowY() Returns the y-coordinate of the ZoomWindow's origin.
void	setBackground(java.awt.Image bg) Sets the background image for the zoom.
void	setCanvasHeight(int cHeight) Sets the height of the canvas (the portion of the image that is visible).
void	setCanvasWidth(int cWidth) Sets the width of the canvas (the portion of the image that is visible).
void	setGraphics(java.awt.Graphics gr) Sets the graphics context for the zoom.
void	setImageHeight(int iHeight) Sets the height of the image.
void	setImageWidth(int iWidth) Sets the width of the image.
void	setTmpImage() Sets the temporary image that is used for double-buffering the zoom.
void	setZoomFactor(int zf) Sets the zoom factor.
void	setZoomWindowHeight(int zwHeight) Sets the height of the zoom window.
void	setZoomWindowWidth(int zwWidth) Sets the width of the zoom window.
void	setZoomWindowX(int x) Sets the x-coordinate of the ZoomWindow's origin.
void	setZoomWindowY(int y) Sets the y-coordinate of the ZoomWindow's origin.

Methods inherited from class java.lang.Object

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

Constructor Detail

JaxoZoom

public JaxoZoom()

Constructor.

Method Detail

setZoomFactor

public final void setZoomFactor(int zf)

Sets the zoom factor.

Parameters:

zf - The zoom factor.

getZoomFactor

public final int getZoomFactor()

Returns the zoom factor.

Returns:

The zoom factor.

setZoomWindowWidth

public final void setZoomWindowWidth(int zwWidth)

Sets the width of the zoom window.

Parameters:

zwWidth - The width of the zoom window.

getZoomWindowWidth

public final int getZoomWindowWidth()

Returns the width of the zoom window.

Returns:

The width of the zoom window.

setZoomWindowHeight

public final void setZoomWindowHeight(int zwHeight)

Sets the height of the zoom window.

Parameters:

zwHeight - The width of the zoom window.

getZoomWindowHeight

public final int getZoomWindowHeight()

Returns the height of the zoom window.

Returns:

The height of the zoom window.

setImageWidth

public final void setImageWidth(int iWidth)

Sets the width of the image.

Parameters:

iWidth - The width of the image.

getImageWidth

public final int getImageWidth()

Returns the width of the image.

Returns:

The width of the image.

setImageHeight

public final void setImageHeight(int iHeight)

Sets the height of the image.

Parameters:

iHeight - The width of the image.

getImageHeight

public final int getImageHeight()

Returns the height of the image.

Returns:

The height of the image.

setCanvasWidth

public final void setCanvasWidth(int cWidth)

Sets the width of the canvas (the portion of the image that is visible).

Parameters:

cWidth - The width of the canvas.

getCanvasWidth

public final int getCanvasWidth()

Returns the width of the canvas (the portion of the image that is visible).

Returns:

The width of the canvas.

setCanvasHeight

public final void setCanvasHeight(int cHeight)

Sets the height of the canvas (the portion of the image that is visible).

Parameters:

cHeight - The height of the canvas.

getCanvasHeight

public final int getCanvasHeight()

Returns the height of the canvas (the portion of the image that is visible).

Returns:

The height of the canvas.

setZoomWindowX

public final void setZoomWindowX(int x)

Sets the x-coordinate of the ZoomWindow's origin.

Parameters:

x - The x-coordinate of the ZoomWindow's origin.

getZoomWindowX

public final int getZoomWindowX()

Returns the x-coordinate of the ZoomWindow's origin.

Returns:

The x-coordinate of the ZoomWindow's origin.

setZoomWindowY

public final void setZoomWindowY(int y)

Sets the y-coordinate of the ZoomWindow's origin.

Parameters:

y - The y-coordinate of the ZoomWindow's origin.

getZoomWindowY

public final int getZoomWindowY()

Returns the y-coordinate of the ZoomWindow's origin.

Returns:

The y-coordinate of the ZoomWindow's origin.

setBackground

public final void setBackground(java.awt.Image bg)

Sets the background image for the zoom.

Parameters:

bg - The background image.

setTmpImage

public final void setTmpImage()

Sets the temporary image that is used for double-buffering the zoom.

getBackground

public final java.awt.Image getBackground()

Returns the background image of the zoom.

Returns:

The background image.

setGraphics

public final void setGraphics(java.awt.Graphics gr)

Sets the graphics context for the zoom.

Parameters:

gr - The graphics context.

getGraphics

public final java.awt.Graphics getGraphics()

Returns the graphics context of the zoom.

Returns:

The graphics context.

drawZoomWindow

public final void drawZoomWindow()

Draws the zoom by clipping to the zoom window and scaling the background image.

eraseZoomWindow

public final void eraseZoomWindow()

Erases the zoom window.

adjustZoomWindow

public final void adjustZoomWindow(int oldX,
                                   int oldY,
                                   int newX,
                                   int newY)

Adjusts the zoom when the zoom window gets dragged.

Parameters:

oldX - The old x-coordinate of the zoom window.

oldY - The old y-coordinate of the zoom window.

newX - The new x-coordinate of the zoom window.

newY - The new y-coordinate of the zoom window.

dragZoomWindow

public final void dragZoomWindow(int eX,
                                 int eY)

Drags the zoom when the zoom window gets dragged.

Parameters:

eX - The x-coordinate of the center of the zoom window (where the mouse event occurred).

eY - The y-coordinate of the center of the zoom window.