#include "TuningCanvas.h"

#include "wx/wxprec.h"

#ifndef WX_PRECOMP
#include "wx/wx.h"
#endif

#if !wxUSE_GLCANVAS
#error "OpenGL required: set wxUSE_GLCANVAS to 1 and rebuild the library"
#endif

#include "CubicSDR.h"
#include "CubicSDRDefs.h"
#include "AppFrame.h"
#include <algorithm>

wxBEGIN_EVENT_TABLE(TuningCanvas, wxGLCanvas) EVT_PAINT(TuningCanvas::OnPaint)
EVT_IDLE(TuningCanvas::OnIdle)
EVT_MOTION(TuningCanvas::OnMouseMoved)
EVT_LEFT_DOWN(TuningCanvas::OnMouseDown)
EVT_LEFT_UP(TuningCanvas::OnMouseReleased)
EVT_LEAVE_WINDOW(TuningCanvas::OnMouseLeftWindow)
EVT_ENTER_WINDOW(TuningCanvas::OnMouseEnterWindow)
wxEND_EVENT_TABLE()

TuningCanvas::TuningCanvas(wxWindow *parent, int *attribList) :
InteractiveCanvas(parent, attribList), dragAccum(0) {

    glContext = new TuningContext(this, &wxGetApp().GetContext(this));
}

TuningCanvas::~TuningCanvas() {

}

void TuningCanvas::OnPaint(wxPaintEvent& WXUNUSED(event)) {
    wxPaintDC dc(this);
    const wxSize ClientSize = GetClientSize();

    glContext->SetCurrent(*this);
    glViewport(0, 0, ClientSize.x, ClientSize.y);

    glContext->DrawBegin();

    DemodulatorInstance *activeDemod = wxGetApp().getDemodMgr().getLastActiveDemodulator();

    if (activeDemod != NULL) {
        glContext->DrawDemodFreqBw(activeDemod->getFrequency(), activeDemod->getBandwidth(), wxGetApp().getFrequency());
    } else {
        glContext->DrawDemodFreqBw(0, 0, wxGetApp().getFrequency());
    }

    if (mouseTracker.mouseDown()) {
        glContext->Draw(0.2, 0.2, 0.9, 0.6, mouseTracker.getOriginMouseX(), mouseTracker.getMouseX());
    }

    glContext->DrawEnd();

    SwapBuffers();
}

void TuningCanvas::OnIdle(wxIdleEvent &event) {
    if (mouseTracker.mouseDown()) {
        DemodulatorInstance *activeDemod = wxGetApp().getDemodMgr().getLastActiveDemodulator();

        dragAccum += mouseTracker.getMouseX() - mouseTracker.getOriginMouseX();

        if (uxDown > 0.275) {
            wxGetApp().setFrequency(wxGetApp().getFrequency() + (int) (mouseTracker.getOriginDeltaMouseX() * SRATE * 15.0));
        }

        if (abs(dragAccum * 10.0) >= 1) {
            if (uxDown < -0.275 && activeDemod != NULL) {
                activeDemod->setFrequency(activeDemod->getFrequency() + (int) (dragAccum * 10.0));
            } else if (activeDemod != NULL) {
                activeDemod->setBandwidth(activeDemod->getBandwidth() + (int) (dragAccum * 10.0));
            }

            while (dragAccum * 10.0 >= 1.0) {
                dragAccum -= 1.0 / 10.0;
            }
            while (dragAccum * -10.0 <= -1.0) {
                dragAccum += 1.0 / 10.0;
            }
        }
    }

    Refresh(false);
}

void TuningCanvas::OnMouseMoved(wxMouseEvent& event) {
    InteractiveCanvas::OnMouseMoved(event);
}

void TuningCanvas::OnMouseDown(wxMouseEvent& event) {
    InteractiveCanvas::OnMouseDown(event);
    mouseTracker.setVertDragLock(true);

    uxDown = 2.0 * (mouseTracker.getMouseX() - 0.5);

    dragAccum = 0;
    SetCursor (wxCURSOR_IBEAM);
}

void TuningCanvas::OnMouseWheelMoved(wxMouseEvent& event) {
    InteractiveCanvas::OnMouseWheelMoved(event);
}

void TuningCanvas::OnMouseReleased(wxMouseEvent& event) {
    InteractiveCanvas::OnMouseReleased(event);
    mouseTracker.setVertDragLock(false);
    SetCursor (wxCURSOR_SIZEWE);
}

void TuningCanvas::OnMouseLeftWindow(wxMouseEvent& event) {
    InteractiveCanvas::OnMouseLeftWindow(event);
    SetCursor (wxCURSOR_CROSS);
}

void TuningCanvas::OnMouseEnterWindow(wxMouseEvent& event) {
    InteractiveCanvas::mouseTracker.OnMouseEnterWindow(event);
    SetCursor (wxCURSOR_SIZEWE);
}

void TuningCanvas::setHelpTip(std::string tip) {
    helpTip = tip;
}