// Copyright (c) 2005, Rodrigo Braz Monteiro, Niels Martin Hansen
// All rights reserved.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are met:
//
//   * Redistributions of source code must retain the above copyright notice,
//     this list of conditions and the following disclaimer.
//   * Redistributions in binary form must reproduce the above copyright notice,
//     this list of conditions and the following disclaimer in the documentation
//     and/or other materials provided with the distribution.
//   * Neither the name of the Aegisub Group nor the names of its contributors
//     may be used to endorse or promote products derived from this software
//     without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
// AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
// IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
// ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
// LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
// CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
// SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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// Aegisub Project http://www.aegisub.org/
//
// $Id$

/// @file audio_box.cpp
/// @brief The entire audio area in the main UI, containing display and related toolbars
/// @ingroup audio_ui
///

#include "config.h"

#ifndef AGI_PRE
#include <math.h>

#include <wx/bmpbuttn.h>
#include <wx/scrolbar.h>
#include <wx/sizer.h>
#include <wx/slider.h>
#include <wx/string.h>
#include <wx/statline.h>
#include <wx/textctrl.h>
#include <wx/tglbtn.h>
#include <wx/toolbar.h>
#include <wx/laywin.h> // Keep this last so wxSW_3D is set.
#endif

#include <libaegisub/log.h>

#include "audio_box.h"

#include "include/aegisub/context.h"
#include "include/aegisub/toolbar.h"

#include "audio_controller.h"
#include "audio_display.h"
#include "audio_karaoke.h"
#include "command/command.h"
#include "libresrc/libresrc.h"
#include "main.h"
#include "toggle_bitmap.h"
#include "selection_controller.h"
#include "utils.h"

enum AudioBoxControlIDs {
	Audio_Horizontal_Zoom = 1600,
	Audio_Vertical_Zoom,
	Audio_Volume,
};

AudioBox::AudioBox(wxWindow *parent, agi::Context *context)
: wxPanel(parent, -1, wxDefaultPosition, wxDefaultSize, wxTAB_TRAVERSAL|wxBORDER_RAISED)
, audioDisplay(new AudioDisplay(this, context->audioController, context))
, controller(context->audioController)
, context(context)
{
	// Zoom
	HorizontalZoom = new wxSlider(this,Audio_Horizontal_Zoom,0,-50,30,wxDefaultPosition,wxSize(-1,20),wxSL_VERTICAL|wxSL_BOTH);
	HorizontalZoom->SetToolTip(_("Horizontal zoom"));
	VerticalZoom = new wxSlider(this,Audio_Vertical_Zoom,50,0,100,wxDefaultPosition,wxSize(-1,20),wxSL_VERTICAL|wxSL_BOTH|wxSL_INVERSE);
	VerticalZoom->SetToolTip(_("Vertical zoom"));
	VolumeBar = new wxSlider(this,Audio_Volume,50,0,100,wxDefaultPosition,wxSize(-1,20),wxSL_VERTICAL|wxSL_BOTH|wxSL_INVERSE);
	VolumeBar->SetToolTip(_("Audio Volume"));
	bool link = OPT_GET("Audio/Link")->GetBool();
	if (link) {
		VolumeBar->SetValue(VerticalZoom->GetValue());
		VolumeBar->Enable(false);
	}

	// VertVol sider
	wxSizer *VertVol = new wxBoxSizer(wxHORIZONTAL);
	VertVol->Add(VerticalZoom,1,wxEXPAND,0);
	VertVol->Add(VolumeBar,1,wxEXPAND,0);
	wxSizer *VertVolArea = new wxBoxSizer(wxVERTICAL);
	VertVolArea->Add(VertVol,1,wxEXPAND,0);

	ToggleBitmap *link_btn = new ToggleBitmap(this, context, "audio/opt/vertical_link", 16, "Audio", wxSize(20, -1));
	VertVolArea->Add(link_btn, 0, wxRIGHT | wxALIGN_CENTER | wxEXPAND, 0);
	OPT_SUB("Audio/Link", &AudioBox::OnVerticalLink, this);

	// Top sizer
	wxSizer *TopSizer = new wxBoxSizer(wxHORIZONTAL);
	TopSizer->Add(audioDisplay,1,wxEXPAND,0);
	TopSizer->Add(HorizontalZoom,0,wxEXPAND,0);
	TopSizer->Add(VertVolArea,0,wxEXPAND,0);

	context->karaoke = new AudioKaraoke(this, context);

	// Main sizer
	wxBoxSizer *MainSizer = new wxBoxSizer(wxVERTICAL);
	MainSizer->Add(TopSizer,1,wxEXPAND|wxALL,3);
	MainSizer->Add(toolbar::GetToolbar(this, "audio", context, "Audio"),0,wxEXPAND|wxBOTTOM|wxLEFT|wxRIGHT,3);
	MainSizer->Add(context->karaoke,0,wxEXPAND|wxBOTTOM|wxLEFT|wxRIGHT,3);
	MainSizer->AddSpacer(3);
	SetSizer(MainSizer);
}

AudioBox::~AudioBox() { }

BEGIN_EVENT_TABLE(AudioBox,wxPanel)
	EVT_COMMAND_SCROLL(Audio_Horizontal_Zoom, AudioBox::OnHorizontalZoom)
	EVT_COMMAND_SCROLL(Audio_Vertical_Zoom, AudioBox::OnVerticalZoom)
	EVT_COMMAND_SCROLL(Audio_Volume, AudioBox::OnVolume)
END_EVENT_TABLE()

void AudioBox::OnHorizontalZoom(wxScrollEvent &event) {
	// Negate the value, we want zoom out to be on bottom and zoom in on top,
	// but the control doesn't want negative on bottom and positive on top.
	audioDisplay->SetZoomLevel(-event.GetPosition());
}

void AudioBox::OnVerticalZoom(wxScrollEvent &event) {
	int pos = mid(1, event.GetPosition(), 100);
	double value = pow(pos / 50.0, 3);
	audioDisplay->SetAmplitudeScale(value);
	if (!VolumeBar->IsEnabled()) {
		VolumeBar->SetValue(pos);
		controller->SetVolume(value);
	}
}

void AudioBox::OnVolume(wxScrollEvent &event) {
	int pos = mid(1, event.GetPosition(), 100);
	controller->SetVolume(pow(pos / 50.0, 3));
}

void AudioBox::OnVerticalLink(agi::OptionValue const& opt) {
	if (opt.GetBool()) {
		int pos = mid(1, VerticalZoom->GetValue(), 100);
		double value = pow(pos / 50.0, 3);
		controller->SetVolume(value);
		VolumeBar->SetValue(pos);
	}
	VolumeBar->Enable(!opt.GetBool());
}