1 files changed, 90 insertions, 21 deletions

diff --git a/core/settings/light-and-power/calibration.cpp b/core/settings/light-and-power/calibration.cpp
index 6a3360f..aed2bc8 100644
--- a/core/settings/light-and-power/calibration.cpp
+++ b/core/settings/light-and-power/calibration.cpp
@@ -26,18 +26,21 @@
 
 */
 #include "calibration.h"
 
 #include <qpainter.h>
 #include <qpalette.h>
+#include <qpixmap.h>
 
-#define BRD 2
+#define BRD 3
 
 Calibration::Calibration ( QWidget *parent, const char *name, WFlags fl )
-        : QWidget ( parent, name, 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 );
@@ -118,26 +121,34 @@ QPoint Calibration::endPoint ( ) const
 
 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 ( ));
 }
 
 
-#define SCALEX(x)   (BRD+x*(width()- 2*BRD)/m_scale.width())
-#define SCALEY(y)   (BRD+y*(height()-2*BRD)/m_scale.height())
+#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 );
 }
@@ -152,27 +163,27 @@ void Calibration::mousePressEvent ( QMouseEvent *e )
 
         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] ) <= BRD ) &&
-                    ( QABS( e-> y ( ) - y [i] ) <= BRD )) {
+                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 );
+                repaint ( r, false );
                 }
 }
 
 void Calibration::mouseMoveEvent ( QMouseEvent *e )
 {
         if ( m_dragged < 0 )
@@ -181,16 +192,24 @@ void Calibration::mouseMoveEvent ( QMouseEvent *e )
         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 [0]. x ( ) > n [1]. x ( )) || ( n [m_dragged]. x ( ) < 0 ) || ( n [m_dragged]. x ( ) >= m_scale. width ( )))
-                n [m_dragged]. setX ( m_p [m_dragged]. x ( ));
-        if (( n [0]. y ( ) > n [1]. y ( )) || ( n [m_dragged]. y ( ) < 0 ) || ( n [m_dragged]. y ( ) >= m_scale. height ( )))
-                n [m_dragged]. setY ( m_p [m_dragged]. y ( ));
+        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 ( ));
                 
                 QRect r;
                 int ox [2], oy [2], nx [2], ny [2];
         
         for ( int i = 0; i < 2; i++ ) {
                 nx [i] = SCALEX( n [i]. x ( ));
@@ -203,24 +222,28 @@ void Calibration::mouseMoveEvent ( QMouseEvent *e )
                                 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 );
                 
-                repaint ( r );
+                repaint ( r, false );
         }
 }
 
 void Calibration::mouseReleaseEvent ( QMouseEvent *e )
 {
         if ( e-> button ( ) != LeftButton )
@@ -230,48 +253,94 @@ void Calibration::mouseReleaseEvent ( QMouseEvent *e )
                 return;
         
         int x = SCALEX( m_p [m_dragged]. x ( ));
         int y = SCALEY( m_p [m_dragged]. y ( ));
         m_dragged = -1;
         
-        repaint ( around ( x, y ));
+        repaint ( around ( x, y ), false );
 }
 
-void Calibration::paintEvent ( QPaintEvent * )
+void Calibration::paintEvent ( QPaintEvent *pe )
 {
-        QPainter p ( this );
-        QColorGroup g = colorGroup ( );
-
+        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 ));
+        
+        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 < m_steps; i++ ) {
-                int fx = x0 + dx * i / m_steps;
-                int fy = y0 + dy * i / ( m_steps - 1 );
+        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 ( QRect ( BRD, BRD, width ( ) - 2*BRD, height() - 2*BRD ), AlignTop | AlignRight, tr( "%1 Steps" ). arg ( m_steps ));
+        p. drawText ( tr, AlignTop | AlignRight, stepstr );
+        
+        p. end ( );
+        bitBlt ( this, cr. topLeft ( ), &pix, cr ); 
+        if ( !cr. contains ( tr ))
+                        bitBlt ( this, tr. topLeft ( ), &pix, tr );     
 }