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# widgetgallery.cpp Example File
widgets/styles/widgetgallery.cpp

        /****************************************************************************
        **
        ** Copyright (C) 2005-2005 Trolltech AS. All rights reserved.
        **
        ** This file is part of the documentation of the Qt Toolkit.
        **
        ** This file may be used under the terms of the GNU General Public
        ** License version 2.0 as published by the Free Software Foundation
        ** and appearing in the file LICENSE.GPL included in the packaging of
        ** this file.  Please review the following information to ensure GNU
        ** General Public Licensing requirements will be met:
        ** http://www.trolltech.com/products/qt/opensource.html
        **
        ** If you are unsure which license is appropriate for your use, please
        ** review the following information:
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        **
        ** This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
        ** WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
        **
        ****************************************************************************/

        #include <QtGui>

        #include "norwegianwoodstyle.h"
        #include "widgetgallery.h"

        WidgetGallery::WidgetGallery(QWidget *parent)
            : QDialog(parent)
        {
            originalPalette = QApplication::palette();

            styleComboBox = new QComboBox;
            styleComboBox->addItem("NorwegianWood");
            styleComboBox->addItems(QStyleFactory::keys());

            styleLabel = new QLabel(tr("&Style:"));
            styleLabel->setBuddy(styleComboBox);

            useStylePaletteCheckBox = new QCheckBox(tr("&Use style's standard palette"));
            useStylePaletteCheckBox->setChecked(true);

            disableWidgetsCheckBox = new QCheckBox(tr("&Disable widgets"));

            createTopLeftGroupBox();
            createTopRightGroupBox();
            createBottomLeftTabWidget();
            createBottomRightGroupBox();
            createProgressBar();

            connect(styleComboBox, SIGNAL(activated(const QString &)),
                    this, SLOT(changeStyle(const QString &)));
            connect(useStylePaletteCheckBox, SIGNAL(toggled(bool)),
                    this, SLOT(changePalette()));
            connect(disableWidgetsCheckBox, SIGNAL(toggled(bool)),
                    topLeftGroupBox, SLOT(setDisabled(bool)));
            connect(disableWidgetsCheckBox, SIGNAL(toggled(bool)),
                    topRightGroupBox, SLOT(setDisabled(bool)));
            connect(disableWidgetsCheckBox, SIGNAL(toggled(bool)),
                    bottomLeftTabWidget, SLOT(setDisabled(bool)));
            connect(disableWidgetsCheckBox, SIGNAL(toggled(bool)),
                    bottomRightGroupBox, SLOT(setDisabled(bool)));

            QHBoxLayout *topLayout = new QHBoxLayout;
            topLayout->addWidget(styleLabel);
            topLayout->addWidget(styleComboBox);
            topLayout->addStretch(1);
            topLayout->addWidget(useStylePaletteCheckBox);
            topLayout->addWidget(disableWidgetsCheckBox);

            QGridLayout *mainLayout = new QGridLayout;
            mainLayout->addLayout(topLayout, 0, 0, 1, 2);
            mainLayout->addWidget(topLeftGroupBox, 1, 0);
            mainLayout->addWidget(topRightGroupBox, 1, 1);
            mainLayout->addWidget(bottomLeftTabWidget, 2, 0);
            mainLayout->addWidget(bottomRightGroupBox, 2, 1);
            mainLayout->addWidget(progressBar, 3, 0, 1, 2);
            mainLayout->setRowStretch(1, 1);
            mainLayout->setRowStretch(2, 1);
            mainLayout->setColumnStretch(0, 1);
            mainLayout->setColumnStretch(1, 1);
            setLayout(mainLayout);

            setWindowTitle(tr("Styles"));
            changeStyle("NorwegianWood");
        }

        void WidgetGallery::changeStyle(const QString &styleName)
        {
            if (styleName == "NorwegianWood") {
                QApplication::setStyle(new NorwegianWoodStyle);
            } else {
                QApplication::setStyle(QStyleFactory::create(styleName));
            }
            changePalette();
        }

        void WidgetGallery::changePalette()
        {
            if (useStylePaletteCheckBox->isChecked())
                QApplication::setPalette(QApplication::style()->standardPalette());
            else
                QApplication::setPalette(originalPalette);
        }

        void WidgetGallery::advanceProgressBar()
        {
            int curVal = progressBar->value();
            int maxVal = progressBar->maximum();
            progressBar->setValue(curVal + (maxVal - curVal) / 100);
        }

        void WidgetGallery::createTopLeftGroupBox()
        {
            topLeftGroupBox = new QGroupBox(tr("Group 1"));

            radioButton1 = new QRadioButton(tr("Radio button 1"));
            radioButton2 = new QRadioButton(tr("Radio button 2"));
            radioButton3 = new QRadioButton(tr("Radio button 3"));
            radioButton1->setChecked(true);

            checkBox = new QCheckBox(tr("Tri-state check box"));
            checkBox->setTristate(true);
            checkBox->setCheckState(Qt::PartiallyChecked);

            QVBoxLayout *layout = new QVBoxLayout;
            layout->addWidget(radioButton1);
            layout->addWidget(radioButton2);
            layout->addWidget(radioButton3);
            layout->addWidget(checkBox);
            layout->addStretch(1);
            topLeftGroupBox->setLayout(layout);
        }

        void WidgetGallery::createTopRightGroupBox()
        {
            topRightGroupBox = new QGroupBox(tr("Group 2"));

            defaultPushButton = new QPushButton(tr("Default Push Button"));
            defaultPushButton->setDefault(true);

            togglePushButton = new QPushButton(tr("Toggle Push Button"));
            togglePushButton->setCheckable(true);
            togglePushButton->setChecked(true);

            flatPushButton = new QPushButton(tr("Flat Push Button"));
            flatPushButton->setFlat(true);

            QVBoxLayout *layout = new QVBoxLayout;
            layout->addWidget(defaultPushButton);
            layout->addWidget(togglePushButton);
            layout->addWidget(flatPushButton);
            layout->addStretch(1);
            topRightGroupBox->setLayout(layout);
        }

        void WidgetGallery::createBottomLeftTabWidget()
        {
            bottomLeftTabWidget = new QTabWidget;
            bottomLeftTabWidget->setSizePolicy(QSizePolicy::Preferred,
                                               QSizePolicy::Ignored);

            QWidget *tab1 = new QWidget;
            tableWidget = new QTableWidget(10, 10);

            QHBoxLayout *tab1hbox = new QHBoxLayout;
            tab1hbox->setMargin(5);
            tab1hbox->addWidget(tableWidget);
            tab1->setLayout(tab1hbox);

            QWidget *tab2 = new QWidget;
            textEdit = new QTextEdit;

            textEdit->setPlainText(tr("Twinkle, twinkle, little star,\n"
                                      "How I wonder what you are.\n"
                                      "Up above the world so high,\n"
                                      "Like a diamond in the sky.\n"
                                      "Twinkle, twinkle, little star,\n"
                                      "How I wonder what you are!\n"));

            QHBoxLayout *tab2hbox = new QHBoxLayout;
            tab2hbox->setMargin(5);
            tab2hbox->addWidget(textEdit);
            tab2->setLayout(tab2hbox);

            bottomLeftTabWidget->addTab(tab1, tr("&Table"));
            bottomLeftTabWidget->addTab(tab2, tr("Text &Edit"));
        }

        void WidgetGallery::createBottomRightGroupBox()
        {
            bottomRightGroupBox = new QGroupBox(tr("Group 3"));
            bottomRightGroupBox->setCheckable(true);
            bottomRightGroupBox->setChecked(true);

            lineEdit = new QLineEdit("s3cRe7");
            lineEdit->setEchoMode(QLineEdit::Password);

            spinBox = new QSpinBox(bottomRightGroupBox);
            spinBox->setValue(50);

            dateTimeEdit = new QDateTimeEdit(bottomRightGroupBox);
            dateTimeEdit->setDateTime(QDateTime::currentDateTime());

            slider = new QSlider(Qt::Horizontal, bottomRightGroupBox);
            slider->setValue(40);

            scrollBar = new QScrollBar(Qt::Horizontal, bottomRightGroupBox);
            scrollBar->setValue(60);

            dial = new QDial(bottomRightGroupBox);
            dial->setValue(30);
            dial->setNotchesVisible(true);

            QGridLayout *layout = new QGridLayout;
            layout->addWidget(lineEdit, 0, 0, 1, 2);
            layout->addWidget(spinBox, 1, 0, 1, 2);
            layout->addWidget(dateTimeEdit, 2, 0, 1, 2);
            layout->addWidget(slider, 3, 0);
            layout->addWidget(scrollBar, 4, 0);
            layout->addWidget(dial, 3, 1, 2, 1);
            layout->setRowStretch(5, 1);
            bottomRightGroupBox->setLayout(layout);
        }

        void WidgetGallery::createProgressBar()
        {
            progressBar = new QProgressBar;
            progressBar->setRange(0, 10000);
            progressBar->setValue(0);

            QTimer *timer = new QTimer(this);
            connect(timer, SIGNAL(timeout()), this, SLOT(advanceProgressBar()));
            timer->start(1000);
        }