/*
    This file is part of Mitsuba, a physically based rendering system.

    Copyright (c) 2007-2011 by Wenzel Jakob and others.

    Mitsuba is free software; you can redistribute it and/or modify
    it under the terms of the GNU General Public License Version 3
    as published by the Free Software Foundation.

    Mitsuba 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, see <http://www.gnu.org/licenses/>.
*/

#include "ui_loaddlg.h"
#include "loaddlg.h"

LoadDialog::LoadDialog(QWidget *parent) :
		QDialog(parent),
	ui(new Ui::LoadDialog) {
	ui->setupUi(this);
	ui->progressBar->setTextVisible(false);
	// weird, Qt/Win needs this to get a busy indicator
	ui->progressBar->setValue(1);
	ui->progressBar->setRange(0, 0);
	ui->console->hide();
	resize(400,180);
	m_consoleAppender = new QConsoleAppender();
	Logger *logger = Thread::getThread()->getLogger();
	m_oldLogLevel = logger->getLogLevel();
	logger->setLogLevel(EDebug);
	logger->addAppender(m_consoleAppender);
	connect(m_consoleAppender, SIGNAL(textMessage(ELogLevel, const QString &)), 
		this, SLOT(onTextMessage(ELogLevel, const QString &)), Qt::QueuedConnection);
	QFont font("Monospace");
	font.setStyleHint(QFont::TypeWriter);
#if defined(__OSX__)
	font.setPointSize(10);
	QFont headingFont = ui->heading->font();
	headingFont.setPointSize(14);
	ui->heading->setFont(headingFont);
#else
	font.setPointSize(8);
#endif
	ui->console->setFont(font);
	ui->console->setReadOnly(true);
	QPalette palette;
	palette.setColor(QPalette::Base, Qt::black);
	ui->console->setPalette(palette);
}

void LoadDialog::on_toggleButton_clicked() {
	if (ui->console->isVisible()) {
		ui->console->hide();
		updateGeometry();
		adjustSize();
		resize(400, 180);
		ui->toggleButton->setText("+");
	} else {
		ui->console->show();
		updateGeometry();
		resize(std::max(width(), 800), 500);
		ui->toggleButton->setText("-");
	}
}

void LoadDialog::close() {
	Logger *logger = Thread::getThread()->getLogger();
	logger->setLogLevel(m_oldLogLevel);
	logger->removeAppender(m_consoleAppender);
	disconnect(m_consoleAppender, SIGNAL(textMessage(ELogLevel, const QString &)), 
		this, SLOT(onTextMessage(ELogLevel, const QString &)));
	m_consoleAppender = NULL;
	if (ui->console->isVisible()) {
		ui->statusLabel->setText(tr("Done."));
		ui->closeButton->setEnabled(true);
		ui->progressBar->setRange(1, 100);
		ui->progressBar->setValue(100);
	} else {
		hide();
	}
}

void LoadDialog::onTextMessage(ELogLevel level, const QString &message) {
	QColor color;
	int idx = message.indexOf("] ");
	if (idx != -1 && ui->progressBar->value() != 100) 
		ui->statusLabel->setText(message.mid(idx+2));
	switch (level) {
		case ETrace: 
		case EDebug: 
		case EInfo:
			color = Qt::gray;
			break;
		case EError:
			color = Qt::red;
			break;
		case EWarn: 
		default:
			color = QColor(255,180,180);
			break;
	}
	ui->console->setTextColor(color);
	ui->console->append(message);
	QTextCursor c =  ui->console->textCursor();
	c.movePosition(QTextCursor::End);
	ui->console->setTextCursor(c);
	ui->console->ensureCursorVisible();
}

LoadDialog::~LoadDialog() {
	delete ui;
	delete m_consoleAppender;
}

void LoadDialog::changeEvent(QEvent *e) {
	QDialog::changeEvent(e);
	switch (e->type()) {
	case QEvent::LanguageChange:
		ui->retranslateUi(this);
		break;
	default:
		break;
	}
}
