From: Carsten Niehaus <cniehaus@gmx.de>
Date: Mon, 11 Jul 2005 11:57:19 +0000 (+0000)
Subject: Add the spectrum view. Doesn't add any new strings.
X-Git-Tag: v3.80.2~300^2~96
X-Git-Url: https://git.rmz.fi/?a=commitdiff_plain;h=e4cc105d3a8da3856468150f7a166c93bd3e417c;p=libqmvoc.git

Add the spectrum view. Doesn't add any new strings.

svn path=/trunk/KDE/kdeedu/kalzium/src/spectrum.h; revision=433674
---

diff --git a/kalzium/src/spectrum.cpp b/kalzium/src/spectrum.cpp
new file mode 100644
index 0000000..188e140
--- /dev/null
+++ b/kalzium/src/spectrum.cpp
@@ -0,0 +1,38 @@
+#include "spectrum.h"
+
+SpectrumWidget::SpectrumWidget( QWidget* parent, const char* name )
+	: QWidget( parent,name )
+{
+}
+
+SpectrumWidget::~SpectrumWidget(){}
+
+void SpectrumWidget::paintEvent( QPaintEvent *e )
+{
+	QPainter p;
+	p.begin( this );
+	p.fillRect( 0, 0, width(), height(), paletteBackgroundColor() ); 
+	drawLines(  &p );
+}
+
+void SpectrumWidget::drawLines( QPainter *p )
+{
+	//the spectrum goes from about 780nm to about 400nm
+	//750 is a dark red 
+	//660 yellow
+	//580 green
+	//500 light blue
+	//400 dark blue
+
+	QImage img = KImageEffect::gradient ( QSize( width(), height() ), Qt::blue, Qt::red, 
+										  KImageEffect::HorizontalGradient );
+	QPixmap pm( img );
+
+	p->drawPixmap( width(), height(), pm );
+}
+
+QColor SpectrumWidget::linecolor( double spectrum )
+{
+	QColor c( 128,128,128 );
+	return c;
+}
diff --git a/kalzium/src/spectrum.h b/kalzium/src/spectrum.h
new file mode 100644
index 0000000..bc18e9f
--- /dev/null
+++ b/kalzium/src/spectrum.h
@@ -0,0 +1,41 @@
+#include <qwidget.h>
+#include <qcolor.h>
+#include <qpainter.h>
+#include <qimage.h>
+#include <qstring.h>
+#include <qvaluelist.h>
+
+#include <kimageeffect.h>
+#include <kdebug.h>
+#include <kpixmapeffect.h>
+
+
+class SpectrumWidget : public QWidget
+{
+	Q_OBJECT
+
+	public:
+		SpectrumWidget( QWidget *parent, const char* name = 0 );
+		~SpectrumWidget();
+
+		void setSpectra( QValueList<double> l ){
+			m_spectra = l;
+		}
+	
+	private:
+		QValueList<double> m_spectra;
+
+		/**
+		 * draws the spectra-lines
+		 */
+		void drawLines( QPainter *p );
+
+		/**
+		 * @returns the color of a line
+		 * @param spectrum the value of the spectrum
+		 */
+		QColor linecolor( double spectrum );
+
+	protected:
+		virtual void paintEvent( QPaintEvent *e );
+};