Adding dual channel to scope example, fixing logic and QT source code.

Examples/ADC/Scope-QT-src/signaldisplay.h

@@ -0,0 +1,33 @@
+#ifndef SIGNALDISPLAY_H
+#define SIGNALDISPLAY_H
+
+#include <QWidget>
+#include <cmath>
+#include <QtGui>
+
+class SignalDisplay : public QWidget
+{
+public:
+	SignalDisplay(QWidget *&parent);
+	void addPoint1( int value);
+	void addPoint2( int value);
+	void setSecsPerDiv( float value ){ secsPerDiv = fabs(value);}
+	void setVoltsPerDiv( float value ){ voltsPerDiv = fabs(value);}
+	float getSecsPerDiv(){ return secsPerDiv; }
+	void  setPointsPerPlot(int value);
+	void setColorTrace1(QColor color){colorTrace1=color;}
+	void setColorTrace2(QColor color){colorTrace2=color;}
+
+private:
+	void paintEvent(QPaintEvent *event);
+	void drawGrid(QPainter &p, QColor colorGrid, int x, int y, int w, int h, int nx, int ny);
+	QPoint *wave1, *wave2;
+	float voltsPerDiv;
+	float secsPerDiv;
+	QColor colorTrace1,colorTrace2;
+	int secsIdx1, secsIdx2;
+	int w, h, ox, oy;
+	int pointsPerPlot;
+};
+
+#endif // SIGNALDISPLAY_H