1 files changed, 61 insertions, 0 deletions
diff --git a/gr-qtgui/src/lib/fftdisplay.h b/gr-qtgui/src/lib/fftdisplay.h
new file mode 100644
index 0000000000..c567e88f5b
--- /dev/null
+++ b/gr-qtgui/src/lib/fftdisplay.h
@@ -0,0 +1,61 @@
+#ifndef FFT_DISPLAY_H
+#define FFT_DISPLAY_H
+
+#include <gr_complex.h>
+
+#include <vector>
+
+#include <qwidget.h>
+#include <qwt_plot.h>
+#include <qevent.h>
+
+class fft_display_event:public QCustomEvent{
+public:
+	fft_display_event(std::vector<gr_complex>*, const float, const float);
+	~fft_display_event();
+
+	const std::vector<gr_complex>& get_fft_data()const;
+	float get_start_frequency()const;
+	float get_stop_frequency()const;
+
+	static const int EVENT_TYPE_ID;
+protected:
+
+private:
+	std::vector<gr_complex> d_fft_data;
+	float d_start_frequency;
+	float d_stop_frequency;
+};
+
+class fft_display:public QwtPlot{
+	Q_OBJECT
+public:	
+	fft_display(const unsigned int, QWidget* = ((QWidget*)0));
+	virtual ~fft_display();
+
+	virtual void customEvent(QCustomEvent*);
+
+	void set_start_frequency(const float);
+	float get_start_frequency()const;
+
+	void set_stop_frequency(const float);
+	float get_stop_frequency()const;
+
+	unsigned int get_fft_bin_size()const;
+
+public slots:
+	virtual void set_data( const std::vector<gr_complex>& );
+	virtual void update_display();
+
+protected:
+
+private:
+	std::vector<gr_complex>* d_fft_data;
+	double* d_plot_data;
+	double* d_x_data;
+	unsigned int d_fft_bin_size;
+	float d_start_frequency;
+	float d_stop_frequency;
+};
+
+#endif /* FFT_DISPLAY_H */