/*
	Neutrino-GUI  -   DBoxII-Project

	Copyright (C) 2011 CoolStream International Ltd

	License: GPLv2

	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.

	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 for more details.

	You should have received a copy of the GNU General Public License
	along with this program; if not, write to the Free Software
	Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/

#ifdef HAVE_CONFIG_H
#include <config.h>
#endif

#include <global.h>
#include <driver/rcinput.h>
#include <driver/fade.h>
#include <unistd.h>

#ifdef HAVE_COOL_HARDWARE
#include <cnxtfb.h>
#endif

COSDFader::COSDFader(unsigned char & alpha)
	: max_alpha(alpha)
{
	frameBuffer = CFrameBuffer::getInstance();
	fadeTimer = 0;
	fadeIn = false;
	fadeOut = false;
}

COSDFader::~COSDFader()
{
	Stop();
}

void COSDFader::StartFadeIn()
{
	if(!g_settings.widget_fade)
		return;

	fadeIn = true;
	fadeOut = false;
	fadeValue = 100;
#ifdef BOXMODEL_APOLLO
	frameBuffer->setBlendMode(CNXTFB_BLEND_MODE_UNIFORM_ALPHA); // Global alpha multiplied with pixel alpha
#else
	frameBuffer->setBlendMode(2); // Global alpha multiplied with pixel alpha
#endif

	frameBuffer->setBlendLevel(fadeValue);
	fadeTimer = g_RCInput->addTimer( FADE_TIME, false );
}

/* return true if fade out started */
bool COSDFader::StartFadeOut()
{
	bool ret = false;
	if ( fadeIn ) {
		g_RCInput->killTimer(fadeTimer);
		fadeIn = false;
	}
	if ((!fadeOut) && g_settings.widget_fade) {
		fadeOut = true;
		fadeTimer = g_RCInput->addTimer( FADE_TIME, false );
#ifdef BOXMODEL_APOLLO
		frameBuffer->setBlendMode(CNXTFB_BLEND_MODE_UNIFORM_ALPHA); // Global alpha multiplied with pixel alpha
#else
		frameBuffer->setBlendMode(2); // Global alpha multiplied with pixel alpha
#endif
		ret = true;
	}
	return ret;
}

void COSDFader::Stop()
{
	if ( fadeIn || fadeOut ) {
		g_RCInput->killTimer(fadeTimer);
#ifdef BOXMODEL_APOLLO
		usleep(40000);
		frameBuffer->setBlendMode(CNXTFB_BLEND_MODE_PER_PIXEL); // Global alpha multiplied with pixel alpha
#else
		frameBuffer->setBlendMode(1); // Global alpha multiplied with pixel alpha
#endif
		fadeIn = fadeOut = false;
	}
}

/* return true, if fade out done */
bool COSDFader::Fade()
{
	bool ret = false;

	if (fadeOut) { // disappear
		fadeValue += FADE_STEP;
		if (fadeValue >= 100) {
			fadeValue = max_alpha;
			g_RCInput->killTimer (fadeTimer);
			ret = true;
		} else
			frameBuffer->setBlendLevel(fadeValue);
	} else { // appears
		fadeValue -= FADE_STEP;
		if (fadeValue <= max_alpha) {
			fadeValue = max_alpha;
			g_RCInput->killTimer (fadeTimer);
			fadeIn = false;
#ifdef BOXMODEL_APOLLO
			frameBuffer->setBlendMode(CNXTFB_BLEND_MODE_PER_PIXEL); // Global alpha multiplied with pixel alpha
#else
			frameBuffer->setBlendMode(1); // Global alpha multiplied with pixel alpha
#endif
		} else
			frameBuffer->setBlendLevel(fadeValue);
	}
	return ret;
}