60 lines
1.4 KiB
C++
60 lines
1.4 KiB
C++
#ifndef DEVICE_TO_LOGICAL_H
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#define DEVICE_TO_LOGICAL_H
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#include <QWidget>
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#include <QPainter>
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#include <vcg/space/point2.h>
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template < class ValueType>
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inline ValueType QTLogicalToDevice( QWidget *qw, const ValueType &value)
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{
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#if QT_VERSION >= 0x050000
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return value*qw->devicePixelRatio() ;
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#else
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Q_UNUSED(qw);
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return value;
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#endif
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}
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template < class ValueType>
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inline ValueType QTLogicalToDevice( QPainter *qp, const ValueType &value)
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{
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#if QT_VERSION >= 0x050000
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return value*qp->device()->devicePixelRatio() ;
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#else
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Q_UNUSED(qp);
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return value;
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#endif
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}
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template < class ValueType>
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inline ValueType QTDeviceToLogical( QWidget *qw, const ValueType &value)
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{
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#if QT_VERSION >= 0x050000
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return value/qw->devicePixelRatio() ;
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#else
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Q_UNUSED(qw);
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return value;
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#endif
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}
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template < class ValueType>
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inline ValueType QTDeviceToLogical( QPainter *qp, const ValueType &value)
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{
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#if QT_VERSION >= 0x050000
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return value/qp->device()->devicePixelRatio() ;
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#else
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Q_UNUSED(qp);
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return value;
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#endif
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}
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inline vcg::Point2f QTLogicalToOpenGL( QWidget *qw, const QPoint &p)
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{
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return vcg::Point2f(QTLogicalToDevice(qw,p.x()), QTLogicalToDevice(qw,qw->height()-p.y()));
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}
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inline int QTDeviceHeight(QWidget *qw) {return QTLogicalToDevice(qw,qw->height());}
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inline int QTDeviceWidth(QWidget *qw) {return QTLogicalToDevice(qw,qw->width());}
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#endif // DEVICE_TO_LOGICAL_H
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