/****************************************************************************
**
** Copyright (C) 2014 Digia Plc and/or its subsidiary(-ies).
** Contact: http://www.qt-project.org/legal
**
** This file is part of the examples of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:BSD$
** You may use this file under the terms of the BSD license as follows:
**
** "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 Digia Plc and its Subsidiary(-ies) 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 INTERRUPTION) HOWEVER CAUSED AND ON ANY
** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."
**
** $QT_END_LICENSE$
**
****************************************************************************/

#include "mainwindow.h"

#include <QApplication>
#include <QMenuBar>
#include <QGroupBox>
#include <QSlider>
#include <QLabel>
#include <QCheckBox>
#include <QSpinBox>

#include "glwidget.h"

MainWindow::MainWindow()
    : m_nextX(1), m_nextY(1)
{
    GLWidget *glwidget = new GLWidget(this, true, qRgb(20, 20, 50));
    QLabel *label = new QLabel(this);
    m_timer = new QTimer(this);
    QSlider *slider = new QSlider(this);
    slider->setOrientation(Qt::Horizontal);

    QLabel *updateLabel = new QLabel("Update interval");
    QSpinBox *updateInterval = new QSpinBox(this);
    updateInterval->setSuffix(" ms");
    updateInterval->setValue(10);
    updateInterval->setToolTip("Interval for the timer that calls update().\n"
                               "Note that on most systems the swap will block to wait for vsync\n"
                               "and therefore an interval < 16 ms will likely lead to a 60 FPS update rate.");
    QGroupBox *updateGroupBox = new QGroupBox(this);
    QCheckBox *transparent = new QCheckBox("Transparent background", this);
    transparent->setToolTip("Toggles Qt::WA_AlwaysStackOnTop and transparent clear color for glClear().\n"
                            "Note how the button on top stacks incorrectly when enabling this.");
    QHBoxLayout *updateLayout = new QHBoxLayout;
    updateLayout->addWidget(updateLabel);
    updateLayout->addWidget(updateInterval);
    updateLayout->addWidget(transparent);
    updateGroupBox->setLayout(updateLayout);

    slider->setRange(0, 50);
    slider->setSliderPosition(30);
    m_timer->setInterval(10);
    label->setText("A QOpenGLWidget");
    label->setAlignment(Qt::AlignHCenter);

    QGroupBox * groupBox = new QGroupBox(this);
    setCentralWidget(groupBox);
    groupBox->setTitle("QOpenGLWidget Example");

    m_layout = new QGridLayout(groupBox);

    m_layout->addWidget(glwidget,1,0,8,1);
    m_layout->addWidget(label,9,0,1,1);
    m_layout->addWidget(updateGroupBox, 10, 0, 1, 1);
    m_layout->addWidget(slider, 11,0,1,1);

    groupBox->setLayout(m_layout);

    QMenu *fileMenu = new QMenu("&File");
    QMenu *helpMenu = new QMenu("&Help");
    QMenu *showMenu = new QMenu("&Show");
    menuBar()->addMenu(fileMenu);
    menuBar()->addMenu(showMenu);
    menuBar()->addMenu(helpMenu);
    QAction *exit = new QAction("E&xit", fileMenu);
    QAction *aboutQt = new QAction("About Qt", helpMenu);
    QAction *showLogo = new QAction("Show 3D Logo", showMenu);
    QAction *showTexture = new QAction("Show 2D Texture", showMenu);
    QAction *showBubbles = new QAction("Show bubbles", showMenu);
    showBubbles->setCheckable(true);
    showBubbles->setChecked(true);
    fileMenu->addAction(exit);
    helpMenu->addAction(aboutQt);
    showMenu->addAction(showLogo);
    showMenu->addAction(showTexture);
    showMenu->addAction(showBubbles);

    connect(exit, SIGNAL(triggered(bool)), this, SLOT(close()));
    connect(aboutQt, SIGNAL(triggered(bool)), qApp, SLOT(aboutQt()));

    connect(m_timer, SIGNAL(timeout()), glwidget, SLOT(update()));

    connect(showLogo, SIGNAL(triggered(bool)), glwidget, SLOT(setLogo()));
    connect(showTexture, SIGNAL(triggered(bool)), glwidget, SLOT(setTexture()));
    connect(showBubbles, SIGNAL(triggered(bool)), glwidget, SLOT(setShowBubbles(bool)));
    connect(slider, SIGNAL(valueChanged(int)), glwidget, SLOT(setScaling(int)));
    connect(transparent, &QCheckBox::toggled, glwidget, &GLWidget::setTransparent);

    connect(updateInterval, SIGNAL(valueChanged(int)), this, SLOT(updateIntervalChanged(int)));

    m_timer->start();
}

void MainWindow::updateIntervalChanged(int value)
{
    m_timer->setInterval(value);
    m_timer->start();
}

void MainWindow::addNew()
{
    if (m_nextY == 4)
        return;
    GLWidget *w = new GLWidget(this, false, qRgb(qrand() % 256, qrand() % 256, qrand() % 256));
    connect(m_timer, SIGNAL(timeout()), w, SLOT(update()));
    m_layout->addWidget(w, m_nextY, m_nextX, 1, 1);
    if (m_nextX == 3) {
        m_nextX = 1;
        ++m_nextY;
    } else {
        ++m_nextX;
    }
}