// Copyright (C) 2003 Dolphin Project.

// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, version 2.0.

// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
// GNU General Public License 2.0 for more details.

// A copy of the GPL 2.0 should have been included with the program.
// If not, see http://www.gnu.org/licenses/

// Official SVN repository and contact information can be found at
// http://code.google.com/p/dolphin-emu/


#include "Config.h"
#include "DSPConfigDlgLLE.h"

BEGIN_EVENT_TABLE(DSPConfigDialogLLE, wxDialog)
	EVT_BUTTON(wxID_OK, DSPConfigDialogLLE::SettingsChanged)
	EVT_CHECKBOX(ID_ENABLE_DTK_MUSIC, DSPConfigDialogLLE::SettingsChanged)
	EVT_CHECKBOX(ID_ENABLE_THROTTLE, DSPConfigDialogLLE::SettingsChanged)
	EVT_COMBOBOX(wxID_ANY, DSPConfigDialogLLE::BackendChanged)
	EVT_COMMAND_SCROLL(ID_VOLUME, DSPConfigDialogLLE::VolumeChanged)
END_EVENT_TABLE()

DSPConfigDialogLLE::DSPConfigDialogLLE(wxWindow *parent, wxWindowID id, const wxString &title, const wxPoint &position, const wxSize& size, long style)
: wxDialog(parent, id, title, position, size, style)
{
	// Load config settings
	g_Config.Load();

	// Center window
	CenterOnParent();

	m_OK = new wxButton(this, wxID_OK, wxT("OK"), wxDefaultPosition, wxDefaultSize, 0, wxDefaultValidator);
	
	wxStaticBoxSizer *sbSettings = new wxStaticBoxSizer(wxVERTICAL, this, wxT("Sound Settings"));
	wxStaticBoxSizer *sbSettingsV = new wxStaticBoxSizer(wxVERTICAL, this, wxT("Volume"));

	// Create items
	m_buttonEnableDTKMusic = new wxCheckBox(this, ID_ENABLE_DTK_MUSIC, wxT("Enable DTK Music"), wxDefaultPosition, wxDefaultSize, 0, wxDefaultValidator);
	m_buttonEnableThrottle = new wxCheckBox(this, ID_ENABLE_THROTTLE, wxT("Enable Audio Throttle"), wxDefaultPosition, wxDefaultSize, 0, wxDefaultValidator);
	wxStaticText *BackendText = new wxStaticText(this, wxID_ANY, wxT("Audio Backend"), wxDefaultPosition, wxDefaultSize, 0);
	m_BackendSelection = new wxComboBox(this, ID_BACKEND, wxEmptyString, wxDefaultPosition, wxSize(90, 20), wxArrayBackends, wxCB_READONLY, wxDefaultValidator);

	m_volumeSlider = new wxSlider(this, ID_VOLUME, ac_Config.m_Volume, 1, 100, wxDefaultPosition, wxDefaultSize, wxSL_VERTICAL|wxSL_INVERSE);
	m_volumeSlider->Enable(SupportsVolumeChanges(ac_Config.sBackend));
	m_volumeText = new wxStaticText(this, wxID_ANY, wxString::Format(wxT("%d %%"), ac_Config.m_Volume), wxDefaultPosition, wxDefaultSize, 0);

	// Update values
	m_buttonEnableDTKMusic->SetValue(ac_Config.m_EnableDTKMusic ? true : false);
	m_buttonEnableThrottle->SetValue(ac_Config.m_EnableThrottle ? true : false);

	// Add tooltips
	m_buttonEnableDTKMusic->SetToolTip(wxT("This is used to play music tracks, like BGM."));
	m_buttonEnableThrottle->SetToolTip(wxT("This is used to control game speed by sound throttle.\n")
		wxT("Disabling this could cause abnormal game speed, such as too fast.\n")
		wxT("But sometimes enabling this could cause constant noise.\n")
		wxT("\nKeyboard Shortcut <TAB>:  Hold down to instantly disable Throttle."));
	m_BackendSelection->SetToolTip(wxT("Changing this will have no effect while the emulator is running!"));
	m_volumeSlider->SetToolTip(wxT("This setting only affects DSound and OpenAL."));

	// Create sizer and add items to dialog
	wxBoxSizer *sMain = new wxBoxSizer(wxVERTICAL);
	wxBoxSizer *sSettings = new wxBoxSizer(wxHORIZONTAL);
	wxBoxSizer *sBackend = new wxBoxSizer(wxHORIZONTAL);
 	wxBoxSizer *sButtons = new wxBoxSizer(wxHORIZONTAL);

	sbSettings->Add(m_buttonEnableDTKMusic, 0, wxALL, 5);
	sbSettings->Add(m_buttonEnableThrottle, 0, wxALL, 5);

	sBackend->Add(BackendText, 0, wxALIGN_CENTER|wxALL, 5);
	sBackend->Add(m_BackendSelection, 0, wxALL, 1);
	sbSettings->Add(sBackend, 0, wxALL, 2);

	sbSettingsV->Add(m_volumeSlider, 0, wxLEFT|wxRIGHT|wxALIGN_CENTER, 6);
	sbSettingsV->Add(m_volumeText, 0, wxALL|wxALIGN_LEFT, 4);

	sSettings->Add(sbSettings, 0, wxALL|wxEXPAND, 4);
	sSettings->Add(sbSettingsV, 0, wxALL|wxEXPAND, 4);
	sMain->Add(sSettings, 0, wxALL|wxEXPAND, 4);

	sButtons->AddStretchSpacer();
	sButtons->Add(m_OK, 0, wxALL, 1);
	sMain->Add(sButtons, 0, wxALL|wxEXPAND, 4);
	SetSizerAndFit(sMain);

}

// Add audio output options
void DSPConfigDialogLLE::AddBackend(const char* backend)
{
	// Update value
    m_BackendSelection->Append(wxString::FromAscii(backend));

#ifdef __APPLE__
	m_BackendSelection->SetValue(wxString::FromAscii(ac_Config.sBackend));
#else
	m_BackendSelection->SetValue(wxString::FromAscii(ac_Config.sBackend.c_str()));
#endif
}

void DSPConfigDialogLLE::ClearBackends()
{
	m_BackendSelection->Clear();
}

DSPConfigDialogLLE::~DSPConfigDialogLLE()
{
}

void DSPConfigDialogLLE::VolumeChanged(wxScrollEvent& WXUNUSED(event))
{
	ac_Config.m_Volume = m_volumeSlider->GetValue();
	ac_Config.Update();

	m_volumeText->SetLabel(wxString::Format(wxT("%d %%"), m_volumeSlider->GetValue()));
}

void DSPConfigDialogLLE::SettingsChanged(wxCommandEvent& event)
{
	ac_Config.m_EnableDTKMusic = m_buttonEnableDTKMusic->GetValue();
	ac_Config.m_EnableThrottle = m_buttonEnableThrottle->GetValue();

#ifdef __APPLE__
	strncpy(ac_Config.sBackend, m_BackendSelection->GetValue().mb_str(), 128);
#else
	ac_Config.sBackend = m_BackendSelection->GetValue().mb_str();
#endif
	ac_Config.Update();
	g_Config.Save();
	
	if (event.GetId() == wxID_OK)
		EndModal(wxID_OK);
}

bool DSPConfigDialogLLE::SupportsVolumeChanges(std::string backend)
{
	//FIXME: this one should ask the backend whether it supports it.
	//       but getting the backend from string etc. is probably
	//       too much just to enable/disable a stupid slider...
	return (backend == BACKEND_DIRECTSOUND ||
		    backend == BACKEND_OPENAL);
}

void DSPConfigDialogLLE::BackendChanged(wxCommandEvent& event)
{
	m_volumeSlider->Enable(SupportsVolumeChanges(std::string(m_BackendSelection->GetValue().mb_str())));
}