Improved calibration:

1) Should work on rotated TS controllers (x<->y)
2) Needs only 2 points now (Qt uses only 2 points internally)
3) Reformated source code

1 files changed, 129 insertions, 153 deletions

diff --git a/core/apps/calibrate/calibrate.cpp b/core/apps/calibrate/calibrate.cpp
index 7b60e64..54fa8ec 100644
--- a/core/apps/calibrate/calibrate.cpp
+++ b/core/apps/calibrate/calibrate.cpp
@@ -1,243 +1,219 @@
 /**********************************************************************
 ** Copyright (C) 2000 Trolltech AS.  All rights reserved.
 **
 ** This file is part of Qtopia Environment.
 **
 ** This file may be distributed and/or modified under the terms of the
 ** GNU General Public License version 2 as published by the Free Software
 ** Foundation and appearing in the file LICENSE.GPL included in the
 ** packaging of this file.
 **
 ** This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
 ** WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
 **
 ** See http://www.trolltech.com/gpl/ for GPL licensing information.
 **
 ** Contact info@trolltech.com if any conditions of this licensing are
 ** not clear to you.
 **
 **********************************************************************/
 
 #include "calibrate.h"
 
 #include <qpe/resource.h>
 
 #include <qapplication.h>
 
 #if defined(Q_WS_QWS) || defined(_WS_QWS_)
 
 #include <qpainter.h>
 #include <qtimer.h>
 #include <qwindowsystem_qws.h>
 #include <qgfx_qws.h>
 
 
-Calibrate::Calibrate(QWidget* parent, const char * name, WFlags wf) :
-    QDialog( parent, name, TRUE, wf | WStyle_Tool | WStyle_Customize | WStyle_StaysOnTop )
+Calibrate::Calibrate( QWidget* parent, const char * name, WFlags wf ) :
+                QDialog( parent, name, TRUE, wf | WStyle_Tool | WStyle_Customize | WStyle_StaysOnTop )
 {
-    showCross = TRUE;
-    const int offset = 30;
-    QRect desk = qApp->desktop()->geometry();
-    setGeometry( 0, 0, desk.width(), desk.height() );
-    if ( desk.height() < 250 ) {
-  int w = desk.height()/3;
-  logo.convertFromImage(Resource::loadImage("launcher/opielogo").smoothScale(w,w));
-    } else {
-  logo = Resource::loadPixmap( "launcher/opielogo" );
-    }
-    cd.screenPoints[QWSPointerCalibrationData::TopLeft] = QPoint( offset, offset );
-    cd.screenPoints[QWSPointerCalibrationData::BottomLeft] = QPoint( offset, qt_screen->deviceHeight() - offset );
-    cd.screenPoints[QWSPointerCalibrationData::BottomRight] = QPoint( qt_screen->deviceWidth() - offset, qt_screen->deviceHeight() - offset );
-    cd.screenPoints[QWSPointerCalibrationData::TopRight] = QPoint( qt_screen->deviceWidth() - offset, offset );
-    cd.screenPoints[QWSPointerCalibrationData::Center] = QPoint( qt_screen->deviceWidth()/2, qt_screen->deviceHeight()/2 );
-    goodcd = cd;
-    reset();
-
-    timer = new QTimer( this );
-    connect( timer, SIGNAL(timeout()), this, SLOT(timeout()) );
+        showCross = TRUE;
+        const int offset = 30;
+        QRect desk = qApp->desktop() ->geometry();
+        setGeometry( 0, 0, desk.width(), desk.height() );
+        if ( desk.height() < 250 ) {
+                int w = desk.height() / 3;
+                logo.convertFromImage( Resource::loadImage( "launcher/opielogo" ).smoothScale( w, w ) );
+        }
+        else {
+                logo = Resource::loadPixmap( "launcher/opielogo" );
+        }
+        cd.screenPoints[ QWSPointerCalibrationData::TopLeft ] = QPoint( offset, offset );
+        cd.screenPoints[ QWSPointerCalibrationData::BottomLeft ] = QPoint( offset, qt_screen->deviceHeight() - offset );
+        cd.screenPoints[ QWSPointerCalibrationData::BottomRight ] = QPoint( qt_screen->deviceWidth() - offset, qt_screen->deviceHeight() - offset );
+        cd.screenPoints[ QWSPointerCalibrationData::TopRight ] = QPoint( qt_screen->deviceWidth() - offset, offset );
+        cd.screenPoints[ QWSPointerCalibrationData::Center ] = QPoint( qt_screen->deviceWidth() / 2, qt_screen->deviceHeight() / 2 );
+        goodcd = cd;
+        reset();
+
+        timer = new QTimer( this );
+        connect( timer, SIGNAL( timeout() ), this, SLOT( timeout() ) );
 }
 
 Calibrate::~Calibrate()
 {
-    store();
+        store();
 }
 
 void Calibrate::show()
 {
-    grabMouse();
-    QWSServer::mouseHandler()->getCalibration(&goodcd);
-    QWSServer::mouseHandler()->clearCalibration();
-    QDialog::show();
+        grabMouse();
+        QWSServer::mouseHandler() ->getCalibration( &goodcd );
+        QWSServer::mouseHandler() ->clearCalibration();
+        QDialog::show();
 }
 
 void Calibrate::store()
 {
-    QWSServer::mouseHandler()->calibrate( &goodcd );
+        QWSServer::mouseHandler() ->calibrate( &goodcd );
 }
 
 void Calibrate::hide()
 {
-    if ( isVisible() )
-  store();
-    QDialog::hide();
+        if ( isVisible() )
+                store();
+        QDialog::hide();
 }
 
 void Calibrate::reset()
 {
-    penPos = QPoint();
-    location = QWSPointerCalibrationData::TopLeft;
-    crossPos = fromDevice( cd.screenPoints[location] );
+        penPos = QPoint();
+        location = QWSPointerCalibrationData::TopLeft;
+        crossPos = fromDevice( cd.screenPoints[ location ] );
 }
 
 QPoint Calibrate::fromDevice( const QPoint &p )
 {
-    return qt_screen->mapFromDevice( p,
-    QSize(qt_screen->deviceWidth(), qt_screen->deviceHeight()) );
+        return qt_screen->mapFromDevice ( p, QSize( qt_screen->deviceWidth ( ), qt_screen->deviceHeight() ) );
 }
 
 bool Calibrate::sanityCheck()
 {
-    QPoint tl = cd.devPoints[QWSPointerCalibrationData::TopLeft];
-    QPoint tr = cd.devPoints[QWSPointerCalibrationData::TopRight];
-    QPoint bl = cd.devPoints[QWSPointerCalibrationData::BottomLeft];
-    QPoint br = cd.devPoints[QWSPointerCalibrationData::BottomRight];
-
-    int vl = QABS( tl.y() - bl.y() );
-    int vr = QABS( tr.y() - br.y() );
-    int diff = QABS( vl - vr );
-    int avg = ( vl + vr ) / 2;
-    if ( diff > avg / 20 ) // 5% leeway
-  return FALSE;
-
-    int ht = QABS( tl.x() - tr.x() );
-    int hb = QABS( br.x() - bl.x() );
-    diff = QABS( ht - hb );
-    avg = ( ht + hb ) / 2;
-    if ( diff > avg / 20 ) // 5% leeway
-  return FALSE;
-
-    return TRUE;
-}
+        QRect r ( cd.devPoints[ QWSPointerCalibrationData::TopLeft ], cd.devPoints[ QWSPointerCalibrationData::BottomRight ] );
+        r = r. normalize ( ); // This should also handle rotated TS controllers
+
+        cd. devPoints [QWSPointerCalibrationData::TopRight]   = r. topRight ( );
+        cd. devPoints [QWSPointerCalibrationData::BottomLeft] = r. bottomLeft ( );
+        cd. devPoints [QWSPointerCalibrationData::Center]     = r. center ( );
+
+                return true;
+        }
 
 void Calibrate::moveCrosshair( QPoint pt )
 {
-/*
-    QPainter p( this );
-    p.drawPixmap( crossPos.x()-8, crossPos.y()-8, saveUnder );
-    saveUnder = QPixmap::grabWindow( winId(), pt.x()-8, pt.y()-8, 16, 16 );
-    p.drawRect( pt.x()-1, pt.y()-8, 2, 7 );
-    p.drawRect( pt.x()-1, pt.y()+1, 2, 7 );
-    p.drawRect( pt.x()-8, pt.y()-1, 7, 2 );
-    p.drawRect( pt.x()+1, pt.y()-1, 7, 2 );
-*/
-    showCross = FALSE;
-    repaint( crossPos.x()-8, crossPos.y()-8, 16, 16 );
-    showCross = TRUE;
-    crossPos = pt;
-    repaint( crossPos.x()-8, crossPos.y()-8, 16, 16 );
+        showCross = FALSE;
+        repaint( crossPos.x() - 8, crossPos.y() - 8, 16, 16 );
+        showCross = TRUE;
+        crossPos = pt;
+        repaint( crossPos.x() - 8, crossPos.y() - 8, 16, 16 );
 }
 
 void Calibrate::paintEvent( QPaintEvent * )
 {
-    QPainter p( this );
-
-    int y;
-
-    if ( !logo.isNull() ) {
-  y = height() / 2 - logo.height() - 15;
-  p.drawPixmap( (width() - logo.width())/2, y, logo );
-    }
-
-    y = height() / 2 + 15;
-
-    p.drawText( 0, y+height()/8, width(), height() - y, AlignHCenter,
-  tr("Touch the crosshairs firmly and\n"
-            "accurately to calibrate your screen.") );
-
-    QFont f = p.font(); f.setBold(TRUE);
-    p.setFont( f );
-    p.drawText( 0, y, width(), height() - y, AlignHCenter|WordBreak, 
-      tr("Welcome to Opie") );
-
-/*
-    saveUnder = QPixmap::grabWindow( winId(), crossPos.x()-8, crossPos.y()-8,
-             16, 16 );
-    moveCrosshair( crossPos );
-*/
-    if ( showCross ) {
-  p.drawRect( crossPos.x()-1, crossPos.y()-8, 2, 7 );
-  p.drawRect( crossPos.x()-1, crossPos.y()+1, 2, 7 );
-  p.drawRect( crossPos.x()-8, crossPos.y()-1, 7, 2 );
-  p.drawRect( crossPos.x()+1, crossPos.y()-1, 7, 2 );
-    }
+        QPainter p( this );
+
+        int y;
+
+        if ( !logo.isNull() ) {
+                y = height() / 2 - logo.height() - 15;
+                p.drawPixmap( ( width() - logo.width() ) / 2, y, logo );
+        }
+
+        y = height() / 2 + 15;
+
+        p.drawText( 0, y + height() / 8, width(), height() - y, AlignHCenter,
+                    tr( "Touch the crosshairs firmly and\n"
+                        "accurately to calibrate your screen." ) );
+
+        QFont f = p.font();
+        f.setBold( TRUE );
+        p.setFont( f );
+        p.drawText( 0, y, width(), height() - y, AlignHCenter | WordBreak,
+                    tr( "Welcome to Opie" ) );
+
+        if ( showCross ) {
+                p.drawRect( crossPos.x() - 1, crossPos.y() - 8, 2, 7 );
+                p.drawRect( crossPos.x() - 1, crossPos.y() + 1, 2, 7 );
+                p.drawRect( crossPos.x() - 8, crossPos.y() - 1, 7, 2 );
+                p.drawRect( crossPos.x() + 1, crossPos.y() - 1, 7, 2 );
+        }
 }
 
 void Calibrate::mousePressEvent( QMouseEvent *e )
 {
-    // map to device coordinates
-    QPoint devPos = qt_screen->mapToDevice( e->pos(),
-      QSize(qt_screen->width(), qt_screen->height()) );
-    if ( penPos.isNull() )
-  penPos = devPos;
-    else
-  penPos = QPoint( (penPos.x() + devPos.x())/2,
-       (penPos.y() + devPos.y())/2 );
+        // map to device coordinates
+        QPoint devPos = qt_screen->mapToDevice( e->pos(), QSize( qt_screen->width(), qt_screen->height() ) );
+        if ( penPos.isNull() )
+                penPos = devPos;
+        else
+                penPos = QPoint( ( penPos.x() + devPos.x() ) / 2,
+                                 ( penPos.y() + devPos.y() ) / 2 );
 }
 
 void Calibrate::mouseReleaseEvent( QMouseEvent * )
 {
-    if ( timer->isActive() )
-  return;
-
-    bool doMove = TRUE;
-
-    cd.devPoints[location] = penPos;
-    if ( location < QWSPointerCalibrationData::LastLocation ) {
-  location = (QWSPointerCalibrationData::Location)((int)location + 1);
-    } else {
-  if ( sanityCheck() ) {
-      reset();
-      goodcd = cd;
-      hide();
-      emit accept();
-      doMove = FALSE;
-  } else {
-      location = QWSPointerCalibrationData::TopLeft;
-  }
-    }
-      
-    if ( doMove ) {
-  QPoint target = fromDevice( cd.screenPoints[location] );
-  dx = (target.x() - crossPos.x())/10;
-  dy = (target.y() - crossPos.y())/10;
-  timer->start( 30 );
-    }
+        if ( timer->isActive() )
+                return ;
+
+        bool doMove = TRUE;
+
+        cd.devPoints[ location ] = penPos;
+        if ( location == QWSPointerCalibrationData::TopLeft ) {
+                location = QWSPointerCalibrationData::BottomRight;
+        }
+        else {
+                if ( sanityCheck() ) {
+                        reset();
+                        goodcd = cd;
+                        hide();
+                        emit accept();
+                        doMove = FALSE;
+                }
+                else {
+                        location = QWSPointerCalibrationData::TopLeft;
+                }
+        }
+
+        if ( doMove ) {
+                QPoint target = fromDevice( cd.screenPoints[ location ] );
+                dx = ( target.x() - crossPos.x() ) / 10;
+                dy = ( target.y() - crossPos.y() ) / 10;
+                timer->start( 30 );
+        }
 }
 
 void Calibrate::timeout()
 {
-    QPoint target = fromDevice( cd.screenPoints[location] );
+        QPoint target = fromDevice( cd.screenPoints[ location ] );
 
-    bool doneX = FALSE;
-    bool doneY = FALSE;
-    QPoint newPos( crossPos.x() + dx, crossPos.y() + dy );
+        bool doneX = FALSE;
+        bool doneY = FALSE;
+        QPoint newPos( crossPos.x() + dx, crossPos.y() + dy );
 
-    if ( QABS(crossPos.x() - target.x()) <= QABS(dx) ) {
-  newPos.setX( target.x() );
-  doneX = TRUE;
-    }
+        if ( QABS( crossPos.x() - target.x() ) <= QABS( dx ) ) {
+                newPos.setX( target.x() );
+                doneX = TRUE;
+        }
 
-    if ( QABS(crossPos.y() - target.y()) <= QABS(dy) ) {
-  newPos.setY(target.y());
-  doneY = TRUE;
-    }
+        if ( QABS( crossPos.y() - target.y() ) <= QABS( dy ) ) {
+                newPos.setY( target.y() );
+                doneY = TRUE;
+        }
 
-    if ( doneX && doneY ) {
-  penPos = QPoint();
-  timer->stop();
-    }
+        if ( doneX && doneY ) {
+                penPos = QPoint();
+                timer->stop();
+        }
 
-    moveCrosshair( newPos );
+        moveCrosshair( newPos );
 }
 
 #endif // _WS_QWS_