ZoomFactor Class Reference

#include <Zoom.h>

List of all members.

Public Member Functions
	ZoomFactor (float x=0, float y=0, float zoom=1, int resX=1, int resY=1)
void	setOrg (QCoords a)
QPoint	convert (float, float)
QCoords	invert (int, int)
QCoords	invert (QPoint)
void	setZoomFactor (double)
void	setRes (int resX, int resY)
double	getZoomFactor ()
double	convertYLength (double)
double	convertXLength (double)
double	getEffectiveXZoomFactor ()
double	getEffectiveYZoomFactor ()
double	getZoom ()
void	zoom (float, QCoords)
QString	toString ()
Public Attributes
double	x
double	y

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Detailed Description

class representing a zoom factor *

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Constructor & Destructor Documentation

ZoomFactor::ZoomFactor (  float  x1 = 0, float  y1 = 0, float  z = 1, int  rx = 1, int  ry = 1 )

In this method I use a static value of 700/210 this is the ratio that i use for converting millimeter to pixel. But there should be a thinking of all the considerations of screen resolution print resolution zoom factor Parameters: x1  x left corner y1  y left corner z  zoom factor *

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Member Function Documentation

QPoint ZoomFactor::convert (  float  x1, float  y1 )

Convert a point in the system cooordinate to the view coordinate system *

double ZoomFactor::convertXLength (  double  plength  )

Convert an x length in the system cooordinate to the view coordinate system Parameters: length  *

double ZoomFactor::convertYLength (  double  plength  )

Convert an y length in the system cooordinate to the view coordinate system Parameters: length  *

double ZoomFactor::getEffectiveXZoomFactor (   )

Returns: the effective x zoom factor. i.e the zoomFactor multiplied by the x resolution

double ZoomFactor::getEffectiveYZoomFactor (   )

Returns: the effective y zoom factor. i.e the zoomFactor multiplied by the y resolution

double ZoomFactor::getZoomFactor (   )

Returns: the zoom factor

QCoords ZoomFactor::invert (  int  x1, int  y1 )

Converts the size

void ZoomFactor::setOrg (  QCoords  f  )

set the origin of a zoom factor *

void ZoomFactor::setRes (  int  rx, int  ry )

sets the resolution Parameters: rx  is the x resolution dpi (Dot per Inch) ry  is the y resolution in dpi

void ZoomFactor::setZoomFactor (  double  d  )

set the zoom factor Parameters: d  the new zoom factor

QString ZoomFactor::toString (   )

For debug purpose only Returns: the string representation of a zoom

void ZoomFactor::zoom (  float  newzoom, QCoords  rightBottomCorner )

Parameters: newzoom  ZoomFactor rightBottomCorner  Right bootom corner of the zoom This method do a centered zoom *

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The documentation for this class was generated from the following files:

• Zoom.h
• Zoom.cpp

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