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Diffstat (limited to 'examples/tablet/tabletstats.cpp')
| -rw-r--r-- | examples/tablet/tabletstats.cpp | 194 |
1 files changed, 194 insertions, 0 deletions
diff --git a/examples/tablet/tabletstats.cpp b/examples/tablet/tabletstats.cpp new file mode 100644 index 0000000..a6e91fb --- /dev/null +++ b/examples/tablet/tabletstats.cpp @@ -0,0 +1,194 @@ +/**************************************************************************** +** +** Copyright (C) 1992-2008 Trolltech ASA. All rights reserved. +** +** This file is part of an example program for Qt. This example +** program may be used, distributed and modified without limitation. +** +*****************************************************************************/ + +#include <qlabel.h> +#include <qlayout.h> +#include <qpainter.h> +#include <math.h> + +#include "tabletstats.h" + +MyOrientation::MyOrientation( QWidget *parent, const char *name ) + : QFrame( parent, name, WRepaintNoErase ) +{ +// QSizePolicy mySize( QSizePolicy::Minimum, QSizePolicy::Expanding ); +// setSizePolicy( mySize ); + setFrameStyle( QFrame::Box | QFrame::Sunken ); +} + +MyOrientation::~MyOrientation() +{ +} + +void MyOrientation::newOrient( int tiltX, int tiltY ) +{ + double PI = 3.14159265359; + int realWidth, + realHeight, + hypot, // a faux hypoteneus, to mess with calculations + shaX, + shaY; + static int oldX = 0, + oldY = 0; + realWidth = width() - 2 * frameWidth(); + realHeight = height() - 2 * frameWidth(); + + + + QRect cr( 0 + frameWidth(), 0 + frameWidth(), realWidth, realHeight ); + QPixmap pix( cr.size() ); + pix.fill( this, cr.topLeft() ); + QPainter p( &pix ); + + if ( realWidth > realHeight ) + hypot = realHeight / 2; + else + hypot = realWidth / 2; + + // create a shadow... + shaX = int(hypot * sin( tiltX * (PI / 180) )); + shaY = int(hypot * sin( tiltY * (PI / 180) )); + + p.translate( realWidth / 2, realHeight / 2 ); + p.setPen( backgroundColor() ); + p.drawLine( 0, 0, oldX, oldY ); + p.setPen( foregroundColor() ); + p.drawLine( 0, 0,shaX, shaY ); + oldX = shaX; + oldY = shaY; + p.end(); + + QPainter p2( this ); + p2.drawPixmap( cr.topLeft(), pix ); + p2.end(); +} + + +StatsCanvas::StatsCanvas( QWidget *parent, const char* name ) + : Canvas( parent, name, WRepaintNoErase ) +{ + QSizePolicy mySize( QSizePolicy::Expanding, QSizePolicy::Minimum ); + setSizePolicy( mySize ); +} + +StatsCanvas::~StatsCanvas() +{ +} + +void StatsCanvas::tabletEvent( QTabletEvent *e ) +{ + static QRect oldR( -1, -1, -1, -1); + QPainter p; + + e->accept(); + switch( e->type() ) { + case QEvent::TabletPress: + qDebug( "Tablet Press" ); + mousePressed = TRUE; + break; + case QEvent::TabletRelease: + qDebug( "Tablet Release" ); + mousePressed = FALSE; + clearScreen(); + break; + default: + break; + } + + r.setRect( e->x() - e->pressure() / 2, + e->y() - e->pressure() / 2, e->pressure(), e->pressure() ); + QRect tmpR = r | oldR; + oldR = r; + + update( tmpR ); + emit signalNewTilt( e->xTilt(), e->yTilt() ); + emit signalNewDev( e->device() ); + emit signalNewLoc( e->x(), e->y() ); + emit signalNewPressure( e->pressure() ); +} + +void StatsCanvas::mouseMoveEvent( QMouseEvent *e ) +{ + qDebug( "Mouse Move" ); + // do nothing + QWidget::mouseMoveEvent( e ); +} + + +void StatsCanvas::mousePressEvent( QMouseEvent *e ) +{ + qDebug( "Mouse Press" ); + QWidget::mousePressEvent( e ); +} + +void StatsCanvas::mouseReleaseEvent( QMouseEvent *e ) +{ + qDebug( "Mouse Release" ); + QWidget::mouseReleaseEvent( e ); +} + +void StatsCanvas::paintEvent( QPaintEvent *e ) +{ + QPainter p; + p.begin( &buffer ); + p.fillRect( e->rect(), colorGroup().base() ); + + // draw a circle if we have the tablet down + if ( mousePressed ) { + p.setBrush( red ); + p.drawEllipse( r ); + } + bitBlt( this, e->rect().x(), e->rect().y(), &buffer, e->rect().x(), + e->rect().y(), e->rect().width(), e->rect().height() ); + p.end(); +} + +TabletStats::TabletStats( QWidget *parent, const char *name ) + : TabletStatsBase( parent, name ) +{ + lblXPos->setMinimumSize( lblXPos->sizeHint() ); + lblYPos->setMinimumSize( lblYPos->sizeHint() ); + lblPressure->setMinimumSize( lblPressure->sizeHint() ); + lblDev->setMinimumSize( lblDev->sizeHint() ); + lblXTilt->setMinimumSize( lblXTilt->sizeHint() ); + lblYTilt->setMinimumSize( lblYTilt->sizeHint() ); + + QObject::connect( statCan, SIGNAL(signalNewTilt(int, int)), + orient, SLOT(newOrient(int, int)) ); + QObject::connect( statCan, SIGNAL(signalNewTilt(int, int)), + this, SLOT(slotTiltChanged(int, int)) ); + QObject::connect( statCan, SIGNAL(signalNewDev(int)), + this, SLOT(slotDevChanged(int)) ); + QObject::connect( statCan, SIGNAL(signalNewLoc(int,int)), + this, SLOT( slotLocationChanged(int,int)) ); +} + +TabletStats::~TabletStats() +{ +} + +void TabletStats::slotDevChanged( int newDev ) +{ + if ( newDev == QTabletEvent::Stylus ) + lblDev->setText( tr("Stylus") ); + else if ( newDev == QTabletEvent::Eraser ) + lblDev->setText( tr("Eraser") ); +} + +void TabletStats::slotLocationChanged( int newX, int newY ) +{ + lblXPos->setNum( newX ); + lblYPos->setNum( newY ); +} + +void TabletStats::slotTiltChanged( int newTiltX, int newTiltY ) +{ + lblXTilt->setNum( newTiltX ); + lblYTilt->setNum( newTiltY ); +} |