raspi-synth/src/synthframe.cpp

#include <iostream>

#include "synthframe.h"
#include "synthapp.h"

wxDECLARE_APP(SynthApp);

float ccToA(int x) {
    return 5.0 * exp(9.2 * (x / 127.0) - 9.2);
}

float ccToDR(int x) {
    return 5.0 * exp(7.0 * (x / 127.0) - 7.0);
}

SynthFrame::SynthFrame() : wxFrame(NULL, wxID_ANY, "Hello World") {
    wxMenu *menuFile = new wxMenu;
    menuFile->Append(wxID_EXIT);
 
    wxMenu *menuHelp = new wxMenu;
    menuHelp->Append(wxID_ABOUT);
 
    wxMenuBar *menuBar = new wxMenuBar;
    menuBar->Append(menuFile, "&File");
    menuBar->Append(menuHelp, "&Help");
 
    SetMenuBar(menuBar);
 
    CreateStatusBar();
    SetStatusText("Welcome to wxWidgets!");

    wxPanel* panel = new wxPanel(this);

    wxBoxSizer* sizer = new wxBoxSizer(wxHORIZONTAL);
    panel->SetSizer(sizer);

    sizer->Add(new wxSlider(panel, AMP_ATTACK_SLIDER, 63, 0, 127, wxDefaultPosition, wxDefaultSize, wxSL_VERTICAL | wxSL_INVERSE));
    sizer->Add(new wxSlider(panel, AMP_DECAY_SLIDER, 63, 0, 127, wxDefaultPosition, wxDefaultSize, wxSL_VERTICAL | wxSL_INVERSE));
    sizer->Add(new wxSlider(panel, AMP_SUSTAIN_SLIDER, 63, 0, 127, wxDefaultPosition, wxDefaultSize, wxSL_VERTICAL | wxSL_INVERSE));
    sizer->Add(new wxSlider(panel, AMP_RELEASE_SLIDER, 63, 0, 127, wxDefaultPosition, wxDefaultSize, wxSL_VERTICAL | wxSL_INVERSE));

    sizer->Add(new wxSlider(panel, FLT_ATTACK_SLIDER, 63, 0, 127, wxDefaultPosition, wxDefaultSize, wxSL_VERTICAL | wxSL_INVERSE));
    sizer->Add(new wxSlider(panel, FLT_DECAY_SLIDER, 63, 0, 127, wxDefaultPosition, wxDefaultSize, wxSL_VERTICAL | wxSL_INVERSE));
    sizer->Add(new wxSlider(panel, FLT_SUSTAIN_SLIDER, 63, 0, 127, wxDefaultPosition, wxDefaultSize, wxSL_VERTICAL | wxSL_INVERSE));
    sizer->Add(new wxSlider(panel, FLT_RELEASE_SLIDER, 63, 0, 127, wxDefaultPosition, wxDefaultSize, wxSL_VERTICAL | wxSL_INVERSE));

    Bind(wxEVT_MENU, &SynthFrame::OnAbout, this, wxID_ABOUT);
    Bind(wxEVT_MENU, &SynthFrame::OnExit, this, wxID_EXIT);
}
 
void SynthFrame::OnExit(wxCommandEvent& event) {
    Close(true);
}
 
void SynthFrame::OnAbout(wxCommandEvent& event) {
    wxMessageBox("This is a wxWidgets Hello World example",
                 "About Hello World", wxOK | wxICON_INFORMATION);
}

void SynthFrame::OnAmpAttackScroll(wxScrollEvent& event) {
    SynthApp& app = wxGetApp();
    float seconds = ccToA(event.GetPosition());
    //app.state.adsrAmp.attackStep = (1.0 / 48000.0) / seconds;
} 

void SynthFrame::OnAmpDecayScroll(wxScrollEvent& event) {
    SynthApp& app = wxGetApp();
    float seconds = ccToDR(event.GetPosition());
    //app.state.adsrAmp.decayStep = (1.0 / 48000.0) / seconds;
} 

void SynthFrame::OnAmpSustainScroll(wxScrollEvent& event) {
    SynthApp& app = wxGetApp();
    float gain = event.GetPosition() / 127.0;
    std::cout << "Gain: " << gain << std::endl;
    //app.state.adsrAmp.sustain = gain;
} 

void SynthFrame::OnAmpReleaseScroll(wxScrollEvent& event) {
    SynthApp& app = wxGetApp();
    float seconds = ccToDR(event.GetPosition());
    //app.state.adsrAmp.releaseStep = (1.0 / 48000.0) / seconds;
} 

void SynthFrame::OnFltAttackScroll(wxScrollEvent& event) {
    SynthApp& app = wxGetApp();
    float seconds = ccToA(event.GetPosition());
    //app.state.adsrFlt.attackStep = (1.0 / 48000.0) / seconds;
} 

void SynthFrame::OnFltDecayScroll(wxScrollEvent& event) {
    SynthApp& app = wxGetApp();
    float seconds = ccToDR(event.GetPosition());
    //app.state.adsrFlt.decayStep = (1.0 / 48000.0) / seconds;
} 

void SynthFrame::OnFltSustainScroll(wxScrollEvent& event) {
    SynthApp& app = wxGetApp();
    float gain = event.GetPosition() / 127.0;
    //app.state.adsrFlt.sustain = gain;
} 

void SynthFrame::OnFltReleaseScroll(wxScrollEvent& event) {
    SynthApp& app = wxGetApp();
    float seconds = ccToDR(event.GetPosition());
    //app.state.adsrFlt.releaseStep = (1.0 / 48000.0) / seconds;
} 

wxBEGIN_EVENT_TABLE(SynthFrame, wxFrame)

EVT_COMMAND_SCROLL(SynthFrame::AMP_ATTACK_SLIDER, SynthFrame::OnAmpAttackScroll)
EVT_COMMAND_SCROLL(SynthFrame::AMP_DECAY_SLIDER, SynthFrame::OnAmpDecayScroll)
EVT_COMMAND_SCROLL(SynthFrame::AMP_SUSTAIN_SLIDER, SynthFrame::OnAmpSustainScroll)
EVT_COMMAND_SCROLL(SynthFrame::AMP_RELEASE_SLIDER, SynthFrame::OnAmpReleaseScroll)

EVT_COMMAND_SCROLL(SynthFrame::FLT_ATTACK_SLIDER, SynthFrame::OnFltAttackScroll)
EVT_COMMAND_SCROLL(SynthFrame::FLT_DECAY_SLIDER, SynthFrame::OnFltDecayScroll)
EVT_COMMAND_SCROLL(SynthFrame::FLT_SUSTAIN_SLIDER, SynthFrame::OnFltSustainScroll)
EVT_COMMAND_SCROLL(SynthFrame::FLT_RELEASE_SLIDER, SynthFrame::OnFltReleaseScroll)

wxEND_EVENT_TABLE()