The light sensor can now be calibrated "reverse" - less backlight in the

dark and more backlight in the light

1 files changed, 7 insertions, 7 deletions

diff --git a/core/settings/light-and-power/calibration.cpp b/core/settings/light-and-power/calibration.cpp
index aed2bc8..c5377d0 100644
--- a/core/settings/light-and-power/calibration.cpp
+++ b/core/settings/light-and-power/calibration.cpp
@@ -1,346 +1,346 @@
 /*
                              This file is part of the OPIE Project
                =.            Copyright (c)  2002 Maximilian Reiss <harlekin@handhelds.org>
              .=l.            Copyright (c)  2002 Robert Griebl <sandman@handhelds.org>
            .>+-=
  _;:,     .>    :=|.         This file is free software; you can
 .> <`_,   >  .   <=          redistribute it and/or modify it under
 :`=1 )Y*s>-.--   :           the terms of the GNU General Public
 .="- .-=="i,     .._         License as published by the Free Software
  - .   .-<_>     .<>         Foundation; either version 2 of the License,
      ._= =}       :          or (at your option) any later version.
     .%`+i>       _;_.
     .i_,=:_.      -<s.       This file is distributed in the hope that
      +  .  -:.       =       it will be useful, but WITHOUT ANY WARRANTY;
     : ..    .:,     . . .    without even the implied warranty of
     =_        +     =;=|`    MERCHANTABILITY or FITNESS FOR A
   _.=:.       :    :=>`:     PARTICULAR PURPOSE. See the GNU General
 ..}^=.=       =       ;      Public License for more details.
 ++=   -.     .`     .:       
  :     =  ...= . :.=-        You should have received a copy of the GNU
  -.   .:....=;==+<;          General Public License along with this file;
   -_. . .   )=.  =           see the file COPYING. If not, write to the
     --        :-=`           Free Software Foundation, Inc.,
                              59 Temple Place - Suite 330,
                              Boston, MA 02111-1307, USA.
 
 */
 #include "calibration.h"
 
 #include <qpainter.h>
 #include <qpalette.h>
 #include <qpixmap.h>
 
 #define BRD 3
 
 Calibration::Calibration ( QWidget *parent, const char *name, WFlags fl )
         : QWidget ( parent, name, fl | WRepaintNoErase )
 {
         setBackgroundMode ( NoBackground );
         
         m_scale = QSize ( 256, 256 );
         m_steps = 5;
         m_dragged = -1;
         m_interval = 5;
         
         m_p [0] = QPoint ( 0, 0 );
         m_p [1] = QPoint ( 255, 255 );
 }
 
 Calibration::~Calibration ( )
 {
 }
 
 void Calibration::setScale ( const QSize &s )
 {
         if ( s. width ( ) < 1 || s. height ( ) < 1 )
                 return;
 
                 m_scale = s;
         checkPoints ( );
         
         update ( );
 }
 
 QSize Calibration::scale ( ) const
 {
         return m_scale;
 }
 
 void Calibration::setLineSteps ( int steps )
 {
         if ( m_steps < 2 )
                 return;
 
         m_steps = steps;
         update ( );
 }
 
 int Calibration::lineSteps ( ) const
 {
         return m_steps;
 }
 
 void Calibration::setInterval ( int iv )
 {
         if ( iv < 1 )
         return;
 
         m_interval = iv;
         //update ( );
 }
 
 int Calibration::interval ( ) const
 {
         return m_interval;
 }
 
 void Calibration::setStartPoint ( const QPoint &p )
 {
         m_p [0] = QPoint ( p. x ( ), m_scale. height ( ) - p. y ( ) - 1 );
                 checkPoints ( );
         update ( );
 }
 
 QPoint Calibration::startPoint ( ) const
 {
         return QPoint ( m_p [0]. x ( ), m_scale. height ( ) - m_p [0]. y ( ) - 1 );
 }
 
 void Calibration::setEndPoint ( const QPoint &p )
 {
         m_p [1] = QPoint ( p. x ( ), m_scale. height ( ) - p. y ( ) - 1 );
         checkPoints ( );
         update ( );
 }
 
 QPoint Calibration::endPoint ( ) const
 {
         return QPoint ( m_p [1]. x ( ), m_scale. height ( ) - m_p [1]. y ( ) - 1 );
 }
 
 void Calibration::checkPoints ( )
 {
         int dx = m_scale. width ( );
         int dy = m_scale. height ( );
 
         if ( m_p [1]. x ( ) < 0 )
                 m_p [1]. setX ( 0 );
         if ( m_p [1]. x ( ) >= dx )
                 m_p [1]. setX ( dx - 1 );
         if ( m_p [0]. x ( ) < 0 )
                 m_p [0]. setX ( 0 );
         if ( m_p [0]. x ( ) > m_p [1]. x ( ))
                 m_p [0]. setX ( m_p [1]. x ( ));
 
         if ( m_p [1]. y ( ) < 0 )
                 m_p [1]. setY ( 0 );
         if ( m_p [1]. y ( ) >= dy )
                 m_p [1]. setY ( dy - 1 );
         if ( m_p [0]. y ( ) < 0 )
                 m_p [0]. setY ( 0 );
-        if ( m_p [0]. y ( ) > m_p [1]. y ( ))
-                m_p [0]. setY ( m_p [1]. y ( ));
+        if ( m_p [0]. y ( ) >= dy )
+                m_p [0]. setY ( dy - 1 );
 }
 
 
 #define SCALEX(x)   (BRD+(x)*(width()- 2*BRD)/m_scale.width())
 #define SCALEY(y)   (BRD+(y)*(height()-2*BRD)/m_scale.height())
 
 
 static QRect around ( int x, int y )
 {
                 return QRect ( x - BRD, y - BRD, 2 * BRD + 1, 2 * BRD + 1 );
 }
 
 void Calibration::mousePressEvent ( QMouseEvent *e )
 {
         if ( e-> button ( ) != LeftButton )
                 return QWidget::mousePressEvent ( e );
 
         int olddragged = m_dragged;
         int x [2], y [2];
 
         m_dragged = -1;
         for ( int i = 0; i < 2; i++ ) {
                 x [i] = SCALEX( m_p [i]. x ( ));
                 y [i] = SCALEY( m_p [i]. y ( ));
 
                 if (( QABS( e-> x ( ) - x [i] ) <= 2 * BRD ) &&
                     ( QABS( e-> y ( ) - y [i] ) <= 2 * BRD )) {
                         m_dragged = i;
                         break;
                 }
         }
 
         if ( m_dragged != olddragged ) {
                 QRect r;
         
                 if ( olddragged >= 0 )
                                 r |= around ( x [olddragged], y [olddragged] );
                 if ( m_dragged >= 0 ) 
                                 r |= around ( x [m_dragged], y [m_dragged] );
                 repaint ( r, false );
                 }
 }
 
 void Calibration::mouseMoveEvent ( QMouseEvent *e )
 {
         if ( m_dragged < 0 )
                 return;
                 
         QPoint n [2];
         
         n [m_dragged]. setX (( e-> x ( ) - BRD ) * m_scale. width ( ) / ( width ( ) - 2 * BRD ));
                 n [m_dragged]. setY (( e-> y ( ) - BRD ) * m_scale. height ( ) / ( height ( ) - 2 * BRD ));
         n [1 - m_dragged] = m_p [1 - m_dragged];
         
         if ( n [m_dragged]. x ( ) < 0 ) 
                 n [m_dragged]. setX ( 0 );
         if ( n [m_dragged]. x ( ) >= m_scale. width ( ))
                 n [m_dragged]. setX ( m_scale. width ( ) - 1 );
         if ( n [0]. x ( ) > n [1]. x ( ))
                 n [m_dragged]. setX ( n [1 - m_dragged]. x ( ));
         if ( n [m_dragged]. y ( ) < 0 ) 
                 n [m_dragged]. setY ( 0 );
         if ( n [m_dragged]. y ( ) >= m_scale. height ( ))
                 n [m_dragged]. setY ( m_scale. height ( ) - 1 );
-        if ( n [0]. y ( ) > n [1]. y ( ))
-                n [m_dragged]. setY ( n [1 - m_dragged]. y ( ));
+        //if ( n [0]. y ( ) > n [1]. y ( ))
+        //      n [m_dragged]. setY ( n [1 - m_dragged]. y ( ));
                 
                 QRect r;
                 int ox [2], oy [2], nx [2], ny [2];
         
         for ( int i = 0; i < 2; i++ ) {
                 nx [i] = SCALEX( n [i]. x ( ));
                 ny [i] = SCALEY( n [i]. y ( ));
                 ox [i] = SCALEX( m_p [i]. x ( ));
                 oy [i] = SCALEY( m_p [i]. y ( ));
         
                         if ( n [i] != m_p [i] ){
                                 r |= around ( nx [i], ny [i] );
                                 r |= around ( ox [i], oy [i] );
                         m_p [i] = n [i];
                         
                         if ( i == 0 ) {
                                 r |= QRect ( 0, ny [0], nx [0] - 0 + 1, 1 );
                                 r |= QRect ( 0, oy [0], ox [0] - 0 + 1, 1 );
                         
                                 emit startPointChanged ( startPoint ( ));
                         }
                         else if ( i == 1 ) {
                                 r |= QRect ( nx [1], ny [1], width ( ) - nx [1], 1 ); 
                                 r |= QRect ( ox [1], oy [1], width ( ) - ox [1], 1 ); 
 
                                 emit endPointChanged ( endPoint ( ));
                         }
                 }
         }
         if ( r. isValid ( )) {
-                r |= QRect ( nx [0], ny [0], nx [1] - nx [0] + 1, ny [1] - ny [0] + 1 );
-                r |= QRect ( ox [0], oy [0], ox [1] - ox [0] + 1, oy [1] - oy [0] + 1 );
+                r |= QRect ( nx [0], ny [0], nx [1] - nx [0] + 1, ny [1] - ny [0] + 1 ). normalize ( );
+                r |= QRect ( ox [0], oy [0], ox [1] - ox [0] + 1, oy [1] - oy [0] + 1 ). normalize ( );
                 
                 repaint ( r, false );
         }
 }
 
 void Calibration::mouseReleaseEvent ( QMouseEvent *e )
 {
         if ( e-> button ( ) != LeftButton )
                 return QWidget::mouseReleaseEvent ( e );
         
         if ( m_dragged < 0 )
                 return;
         
         int x = SCALEX( m_p [m_dragged]. x ( ));
         int y = SCALEY( m_p [m_dragged]. y ( ));
         m_dragged = -1;
         
         repaint ( around ( x, y ), false );
 }
 
 void Calibration::paintEvent ( QPaintEvent *pe )
 {
         QPixmap pix ( size ( ));
         QPainter p ( &pix, this );
         QRect cr = pe-> rect ( );
         
         int x0 = SCALEX( m_p [0]. x ( ));
         int y0 = SCALEY( m_p [0]. y ( ));
         int x1 = SCALEX( m_p [1]. x ( ));
         int y1 = SCALEY( m_p [1]. y ( ));
                         
         int dx = x1 - x0;
         int dy = y1 - y0;
         
         // restrict steps to real x and y resolution
-        int st = QMIN( QMIN( m_steps, ( dx + 1 )), ( dy + 1 ));
+        int st = QMIN( QMIN( m_steps, ( dx + 1 )), ( QABS( dy ) + 1 ));
         
         QString stepstr = tr( "%1 Steps" ). arg ( st );
         QRect tr = p. boundingRect ( BRD, BRD, width ( ) - 2*BRD, height() - 2*BRD, AlignTop | AlignRight, stepstr );
         tr. setLeft ( tr. left ( ) - 20 );
         if ( p. hasClipping ( ))
                 p. setClipRegion ( p. clipRegion ( ) | QRegion ( tr ));
         
         QColorGroup g = colorGroup ( );
 
         p. fillRect ( cr, g. base ( ));
         p. fillRect ( tr, g. base ( ));
 
         int ex = x0, ey = y0;
         
         p. setPen ( g. mid ( ));
         
         int gx0 = SCALEX( 0 );
         int gy0 = SCALEY( 0 );
         int gx1 = SCALEX( m_scale. width ( ) - 1 );
         int gy1 = SCALEY( m_scale. height ( ) - 1 );
 
         int xdiv = QMIN( 4, m_scale. width ( ));
         int ydiv = QMIN( 4, m_scale. height ( ));
         
         xdiv = ( gx1 - gx0 + 1 ) / xdiv;
         ydiv = ( gy1 - gy0 + 1 ) / ydiv;
         
         for ( int i = gx0 + xdiv; i <= ( gx1 - xdiv ); i += xdiv )
                 p. drawLine ( i, gy0, i, gy1 );
         
         for ( int i = gy0 + ydiv; i <= ( gy1 - ydiv ); i += ydiv )
                 p. drawLine ( gx0, i, gx1, i );
         
         p. setPen ( g. highlight ( ));
         
         p. drawLine ( BRD, ey, ex, ey );
         
         for ( int i = 1; i < st; i++ ) {
                 int fx = x0 + dx * i / st;
                 int fy = y0 + dy * i / ( st - 1 );
                 
                 p. drawLine ( ex, ey, fx, ey );
                 p. drawLine ( fx, ey, fx, fy );
                                 
                 ex = fx;
                 ey = fy;
                 }
         if ( st == 1 ) {
                 p. drawLine ( ex, ey, ex, y1 );
                 ey = y1;
         }
         
         p. drawLine ( ex, ey, width ( ) - 1 - BRD, ey );
         
         
         p. fillRect ( around ( x0, y0 ), m_dragged == 0 ? g. highlightedText ( ) : g. text ( ));
         p. drawRect ( around ( x0, y0 ));
         p. fillRect ( around ( x1, y1 ), m_dragged == 1 ? g. highlightedText ( ) : g. text ( ));
         p. drawRect ( around ( x1, y1 ));
         
         p. setPen ( g. text ( ));
         p. drawText ( tr, AlignTop | AlignRight, stepstr );
         
         p. end ( );
         bitBlt ( this, cr. topLeft ( ), &pix, cr ); 
         if ( !cr. contains ( tr ))
                         bitBlt ( this, tr. topLeft ( ), &pix, tr );     
 }