Pino, can you do this?

svn path=/trunk/KDE/kdeedu/kalzium/src/spectrum.h; revision=434010

diff --git a/kalzium/src/spectrum.cpp b/kalzium/src/spectrum.cpp
index 6765176df37f2c035ea4cda13d9e4a629c931ee9..eb2f51a593a33be90e11e814e310f94b78ad596a 100644 (file)
--- a/kalzium/src/spectrum.cpp
+++ b/kalzium/src/spectrum.cpp
@@ -23,10 +23,12 @@ SpectrumWidget::SpectrumWidget( QWidget* parent, const char* name )
        : QWidget( parent,name )
 {
        startValue = 450;
-       endValue = 800;
+       endValue = 760;
 
        m_realWidth = 360;
        m_realHeight = 200;
+
+       ref_image = QImage( "/home/carsten/cvs/trunk/kdeedu/kalzium/src/data/spectrum.png" );
 }
 
 SpectrumWidget::~SpectrumWidget(){}
@@ -48,13 +50,19 @@ void SpectrumWidget::drawLines( QPainter *p )
        //580 green
        //500 light blue
        //400 dark blue
+       //
+       //(0,166,172)  is for 500 nm
+       //(99,182,82)  is for 550 nm
+       //(255,231,49) is for 600 nm
+       //(246,144,49) is for 650 nm
        
-       for(int h = 0; h < 300 ; ++h)
+       for(int h = 450; h < 750 ; ++h)
        {
-               p->setPen(linecolor( h+450 ));
-               int xvalue = m_realWidth/360;
-               p->drawLine(xvalue*h,0,xvalue*h,m_realHeight );
+               p->setPen(linecolor(h) );
+               p->drawLine(h-450,0,h-450,m_realHeight );
        }
+               
+       p->setPen(Qt::black);
 
        int i = 0;
        for ( QValueList<double>::Iterator it = m_spectra.begin();
@@ -89,8 +97,21 @@ int SpectrumWidget::xPos( double value )
 
 QColor SpectrumWidget::linecolor( double spectrum )
 {
-//     int Hcolor = 
-       QColor c( ( int )spectrum-450,255,255, QColor::Hsv );
+//The picture has 575 pixel
+//
+
+       int max = endValue;
+       int min = startValue;
+
+       //Example: Freq is 600nm. 760-450 = 360.
+       //760 - 600 = 160.   360/160 = 2.25
+       int proportion = ( max-min )/( max - spectrum );
+
+       QRgb rgb = ref_image.pixel(proportion, 2 );
+
+       kdDebug() << "RGB: " << rgb << " Prop " << proportion << endl;
+       
+       QColor c( rgb );
        return c;
 }
 

diff --git a/kalzium/src/spectrum.h b/kalzium/src/spectrum.h
index 6d1343f99ac495d89637a1213a9969c3e74c1d1c..4bf2871cbf7e02bc38fa669634f63cc5bf7c304d 100644 (file)
--- a/kalzium/src/spectrum.h
+++ b/kalzium/src/spectrum.h
@@ -31,6 +31,8 @@
 #include <kdebug.h>
 #include <kpixmapeffect.h>
 
+#define MAXCOLOR = 750
+#define MINCOLOR = 450
 
 class SpectrumWidget : public QWidget
 {
@@ -47,6 +49,8 @@ class SpectrumWidget : public QWidget
        private:
                QValueList<double> m_spectra;
 
+               QImage ref_image;
+
                /**
                 * draws the spectra-lines
                 */