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// Copyright (c) Charles J. Cliffe
// SPDX-License-Identifier: GPL-2.0+
#pragma once
#include "wx/glcanvas.h"
#include "wx/timer.h"
#include <vector>
#include <queue>
#include <memory>
#include "InteractiveCanvas.h"
#include "MouseTracker.h"
#include "SpectrumCanvas.h"
#include "WaterfallPanel.h"
#include "Timer.h"
class WaterfallCanvas: public InteractiveCanvas {
public:
enum DragState {
WF_DRAG_NONE, WF_DRAG_BANDWIDTH_LEFT, WF_DRAG_BANDWIDTH_RIGHT, WF_DRAG_FREQUENCY, WF_DRAG_RANGE
};
WaterfallCanvas(wxWindow *parent, std::vector<int> dispAttrs);
void setup(unsigned int fft_size_in, int waterfall_lines_in);
void setFFTSize(unsigned int fft_size_in);
~WaterfallCanvas() override;
DragState getDragState();
DragState getNextDragState();
void attachSpectrumCanvas(SpectrumCanvas *canvas_in);
void processInputQueue();
SpectrumVisualDataQueuePtr getVisualDataQueue();
void setLinesPerSecond(int lps);
void setMinBandwidth(int min);
//This is public because it is indeed forwarded from
//AppFrame::OnGlobalKeyDown, because global key handler intercepts
//calls in all windows.
void OnKeyDown(wxKeyEvent& event);
//This is public because it is indeed forwarded from
//AppFrame::OnGlobalKeyUp, because global key handler intercepts
//calls in all windows.
void OnKeyUp(wxKeyEvent& event);
//public because called by SpectrumCanvas.
void OnMouseWheelMoved(wxMouseEvent& event);
private:
void OnPaint(wxPaintEvent& event);
void OnIdle(wxIdleEvent &event);
void updateHoverState();
void OnMouseMoved(wxMouseEvent& event);
void OnMouseDown(wxMouseEvent& event);
void OnMouseReleased(wxMouseEvent& event);
void OnMouseRightDown(wxMouseEvent& event);
void OnMouseRightReleased(wxMouseEvent& event);
void OnMouseEnterWindow(wxMouseEvent& event);
void OnMouseLeftWindow(wxMouseEvent& event);
void updateCenterFrequency(long long freq);
std::vector<float> spectrum_points;
SpectrumCanvas *spectrumCanvas = nullptr;
PrimaryGLContext *glContext = nullptr;
WaterfallPanel waterfallPanel;
DragState dragState;
DragState nextDragState;
unsigned int fft_size, new_fft_size;
int waterfall_lines;
int dragOfs;
float mouseZoom, zoom;
bool freqMoving;
long double freqMove;
float hoverAlpha;
int linesPerSecond;
float scaleMove;
int dragBW;
SpectrumVisualDataQueuePtr visualDataQueue = std::make_shared<SpectrumVisualDataQueue>();
Timer gTimer;
double lpsIndex;
bool preBuf;
std::mutex tex_update;
int minBandwidth;
std::atomic_bool fft_size_changed;
// event table
wxDECLARE_EVENT_TABLE();
};
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