.TH "QwtMetricsMap" 3 "Tue Nov 20 2012" "Version 5.2.3" "Qwt User's Guide" \" -*- nroff -*-
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.SH NAME
QwtMetricsMap \- 
.SH SYNOPSIS
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.PP
.PP
\fC#include <qwt_layout_metrics\&.h>\fP
.SS "Public Member Functions"

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.RI "QPoint \fBdeviceToLayout\fP (const QPoint &, const QPainter *=NULL) const "
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.RI "QSize \fBdeviceToLayout\fP (const QSize &) const "
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.RI "QRect \fBdeviceToLayout\fP (const QRect &, const QPainter *=NULL) const "
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.RI "QwtPolygon \fBdeviceToLayout\fP (const QwtPolygon &, const QPainter *=NULL) const "
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.RI "int \fBdeviceToLayoutX\fP (int x) const "
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.RI "int \fBdeviceToLayoutY\fP (int y) const "
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.RI "bool \fBisIdentity\fP () const "
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.RI "QPoint \fBlayoutToDevice\fP (const QPoint &, const QPainter *=NULL) const "
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.RI "QSize \fBlayoutToDevice\fP (const QSize &) const "
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.RI "QRect \fBlayoutToDevice\fP (const QRect &, const QPainter *=NULL) const "
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.RI "QwtPolygon \fBlayoutToDevice\fP (const QwtPolygon &, const QPainter *=NULL) const "
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.RI "int \fBlayoutToDeviceX\fP (int x) const "
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.RI "int \fBlayoutToDeviceY\fP (int y) const "
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.RI "QPoint \fBlayoutToScreen\fP (const QPoint &point) const "
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.RI "QSize \fBlayoutToScreen\fP (const QSize &) const "
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.RI "QRect \fBlayoutToScreen\fP (const QRect &) const "
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.RI "int \fBlayoutToScreenX\fP (int x) const "
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.RI "int \fBlayoutToScreenY\fP (int y) const "
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.RI "QPoint \fBscreenToLayout\fP (const QPoint &) const "
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.RI "QSize \fBscreenToLayout\fP (const QSize &) const "
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.RI "QRect \fBscreenToLayout\fP (const QRect &) const "
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.RI "int \fBscreenToLayoutX\fP (int x) const "
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.RI "int \fBscreenToLayoutY\fP (int y) const "
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.RI "void \fBsetMetrics\fP (const QPaintDevice *layoutMetrics, const QPaintDevice *deviceMetrics)"
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.SS "Static Public Member Functions"

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.RI "static QwtPolygon \fBtranslate\fP (const QMatrix &, const QwtPolygon &)"
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.RI "static QRect \fBtranslate\fP (const QMatrix &, const QRect &)"
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.SH "Detailed Description"
.PP 
A Map to translate between layout, screen and paint device metrics\&. 

Qt3 supports painting in integer coordinates only\&. Therefore it is not possible to scale the layout in screen coordinates to layouts in higher resolutions ( f\&.e printing ) without losing the higher precision\&. \fBQwtMetricsMap\fP is used to incorporate the various widget attributes ( always in screen resolution ) into the layout/printing code of \fBQwtPlot\fP\&.
.PP
Qt4 is able to paint floating point based coordinates, what makes it possible always to render in screen coordinates ( with a common scale factor )\&. \fBQwtMetricsMap\fP will be obsolete as soon as Qt3 support has been dropped ( Qwt 6\&.x )\&. 
.SH "Member Function Documentation"
.PP 
.SS "QwtPolygon QwtMetricsMap::translate (const QMatrix &m, const QwtPolygon &pa)\fC [static]\fP"
Wrapper for QMatrix::map\&.
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\fBParameters:\fP
.RS 4
\fIm\fP Matrix 
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\fIpa\fP Polygon to translate 
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\fBReturns:\fP
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Translated polygon 
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.SS "QRect QwtMetricsMap::translate (const QMatrix &m, const QRect &rect)\fC [static]\fP"
Wrapper for QMatrix::mapRect\&.
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\fBParameters:\fP
.RS 4
\fIm\fP Matrix 
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\fIrect\fP Rectangle to translate 
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\fBReturns:\fP
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Translated rectangle 
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.SH "Author"
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Generated automatically by Doxygen for Qwt User's Guide from the source code\&.