com.openpcl.viewer.zoom
Class PosZoomLogic

java.lang.Object
  com.openpcl.viewer.zoom.PosZoomLogic

public class PosZoomLogic
extends Object

Zoom logic

Author:

howard 6/13/2006

Field Summary

protected double	mCurrentZoomFactor
protected boolean	mIsZoomModeZoomWidth
protected int	mZoomArrayIndex
static int	sNumPixels85Inches
static int	sPrintDotsPerInch
protected static int	sZoomArrayIndexMax
protected static int	sZoomArrayIndexMin
protected static double[]	sZoomNotchesArray

Constructor Summary

PosZoomLogic()
Constructor

Method Summary

void	freeUpMemory() When the user is done with this rendering session, then free up memory
double	getCurrentZoomFactor() Get the current zoom factor.
boolean	isZoomModeZoomWidth() Get if zoom mode is zoom width right now.
void	setCurrentZoomFactor(double pZoomFactor) Set the current zoom factor
void	setToInitialValues() Set to initial values
void	setZoomBasedOnUserWindowWidth(int pNumberOfWidthPixels) For Zoom Width, set the current zoom factor from the user's window width number of pixels
void	setZoomModeZoomWidth(boolean pValue) Set if zoom mode is zoom width.
double	zoomInOneNotch() Zoom in one notch.
double	zoomOutOneNotch() Zoom out one notch.

Methods inherited from class java.lang.Object

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

Field Detail

sZoomNotchesArray

protected static final double[] sZoomNotchesArray

mZoomArrayIndex

protected int mZoomArrayIndex

mCurrentZoomFactor

protected double mCurrentZoomFactor

mIsZoomModeZoomWidth

protected boolean mIsZoomModeZoomWidth

sZoomArrayIndexMin

protected static final int sZoomArrayIndexMin

See Also:

Constant Field Values

sZoomArrayIndexMax

protected static final int sZoomArrayIndexMax

See Also:

Constant Field Values

sPrintDotsPerInch

public static final int sPrintDotsPerInch

See Also:

Constant Field Values

sNumPixels85Inches

public static final int sNumPixels85Inches

See Also:

Constant Field Values

Constructor Detail

PosZoomLogic

public PosZoomLogic()

Constructor

Method Detail

setToInitialValues

public void setToInitialValues()

Set to initial values

freeUpMemory

public void freeUpMemory()

When the user is done with this rendering session, then free up memory

setZoomModeZoomWidth

public void setZoomModeZoomWidth(boolean pValue)

Set if zoom mode is zoom width. When the user clicks the zoom width icon on the toolbar, this gets called with true. When the user clicks the zoom in our out button then this gets called with false.

Parameters:

pValue -

isZoomModeZoomWidth

public boolean isZoomModeZoomWidth()

Get if zoom mode is zoom width right now. This is determined by the the zoom width button on the toolbar

Returns:

boolean

setCurrentZoomFactor

public void setCurrentZoomFactor(double pZoomFactor)

Set the current zoom factor

Parameters:

pZoomFactor -

setZoomBasedOnUserWindowWidth

public void setZoomBasedOnUserWindowWidth(int pNumberOfWidthPixels)

For Zoom Width, set the current zoom factor from the user's window width number of pixels

Parameters:

pNumberOfWidthPixels -

getCurrentZoomFactor

public double getCurrentZoomFactor()

Get the current zoom factor. 100.0 means zoomed in all the way and the image is really big and you have to scroll around to see up and down, right and left. 10.0 means zoomed out all the way and the image is really small and you can't even read it. If zoom mode is zoom width zoom, then use the current zoom factor. else if not zoom width, then use the double array zoom factors of 10, 15, 20, 25, by 5s up to 100 max

Returns:

double

zoomInOneNotch

public double zoomInOneNotch()

Zoom in one notch. Notches are 10%, 20% by 10s up to 100% the max

Returns:

double

zoomOutOneNotch

public double zoomOutOneNotch()

Zoom out one notch. Notches are 10%, 20% by 10s up to 400% the max

Returns:

double