/*
 * Copyright (C) 2012 Arjun Kumar <arjun1991@gmail.com>
 *
 * 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; either version 2 of the License, or
 * (at your option) any later version.
 *
 * 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
 */

#include "ShaderDetailManager.h"

#include "components/ogre/ShaderManager.h"

#include "framework/Log.h"


namespace Ember::OgreView {

ShaderDetailManager::ShaderDetailManager(GraphicalChangeAdapter& graphicalChangeAdapter, Ember::OgreView::ShaderManager& shaderManager) :
		mShaderThresholdLevel(8.0f), mGraphicalChangeAdapter(graphicalChangeAdapter), mShaderManager(shaderManager) {
}

ShaderDetailManager::~ShaderDetailManager() = default;

bool ShaderDetailManager::stepUpShaderLevel() {
	ShaderManager::GraphicsLevel level;

	if (mShaderManager.getGraphicsLevel() == ShaderManager::LEVEL_MEDIUM) {
		level = ShaderManager::LEVEL_HIGH;
	} else if (mShaderManager.getGraphicsLevel() == ShaderManager::LEVEL_LOW) {
		level = ShaderManager::LEVEL_MEDIUM;
	} else {
		return false;
	}

	mShaderManager.setGraphicsLevel(level);
	return true;
}

bool ShaderDetailManager::stepDownShaderLevel() {
	ShaderManager::GraphicsLevel level;

	if (mShaderManager.getGraphicsLevel() == ShaderManager::LEVEL_HIGH) {
		level = ShaderManager::LEVEL_MEDIUM;
	} else if (mShaderManager.getGraphicsLevel() == ShaderManager::LEVEL_MEDIUM) {
		level = ShaderManager::LEVEL_LOW;
	} else {
		return false;
	}

	mShaderManager.setGraphicsLevel(level);
	return true;
}

void ShaderDetailManager::pause() {
}

void ShaderDetailManager::unpause() {
}

bool ShaderDetailManager::changeLevel(float level) {
	if (std::abs(level) < mShaderThresholdLevel) {
		return false;
	} else {
		if (level > 1.0f) {
			return stepDownShaderLevel();
		} else {
			return stepUpShaderLevel();
		}
	}
}

}

