Initial import from the monolithic Qt.

This is the beginning of revision history for this module. If you
want to look at revision history older than this, please refer to the
Qt Git wiki for how to use Git history grafting. At the time of
writing, this wiki is located here:

http://qt.gitorious.org/qt/pages/GitIntroductionWithQt

If you have already performed the grafting and you don't see any
history beyond this commit, try running "git log" with the "--follow"
argument.

Branched from the monolithic repo, Qt master branch, at commit
896db169ea224deb96c59ce8af800d019de63f12

1 files changed, 442 insertions, 0 deletions

diff --git a/examples/widgets/icons/mainwindow.cpp b/examples/widgets/icons/mainwindow.cpp
new file mode 100644
index 0000000000..6dda3c16db
--- /dev/null
+++ b/examples/widgets/icons/mainwindow.cpp
@@ -0,0 +1,442 @@
+/****************************************************************************
+**
+** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** 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 Nokia Corporation 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 <QtGui>
+
+#include "iconpreviewarea.h"
+#include "iconsizespinbox.h"
+#include "imagedelegate.h"
+#include "mainwindow.h"
+
+//! [0]
+MainWindow::MainWindow()
+{
+    centralWidget = new QWidget;
+    setCentralWidget(centralWidget);
+
+    createPreviewGroupBox();
+    createImagesGroupBox();
+    createIconSizeGroupBox();
+
+    createActions();
+    createMenus();
+    createContextMenu();
+
+    QGridLayout *mainLayout = new QGridLayout;
+    mainLayout->addWidget(previewGroupBox, 0, 0, 1, 2);
+    mainLayout->addWidget(imagesGroupBox, 1, 0);
+    mainLayout->addWidget(iconSizeGroupBox, 1, 1);
+    centralWidget->setLayout(mainLayout);
+
+    setWindowTitle(tr("Icons"));
+    checkCurrentStyle();
+    otherRadioButton->click();
+
+    resize(minimumSizeHint());
+}
+//! [0]
+
+//! [1]
+void MainWindow::about()
+{
+    QMessageBox::about(this, tr("About Icons"),
+            tr("The <b>Icons</b> example illustrates how Qt renders an icon in "
+               "different modes (active, normal, disabled, and selected) and "
+               "states (on and off) based on a set of images."));
+}
+//! [1]
+
+//! [2]
+void MainWindow::changeStyle(bool checked)
+{
+    if (!checked)
+        return;
+
+    QAction *action = qobject_cast<QAction *>(sender());
+//! [2] //! [3]
+    QStyle *style = QStyleFactory::create(action->data().toString());
+//! [3] //! [4]
+    Q_ASSERT(style);
+    QApplication::setStyle(style);
+
+    smallRadioButton->setText(tr("Small (%1 x %1)")
+            .arg(style->pixelMetric(QStyle::PM_SmallIconSize)));
+    largeRadioButton->setText(tr("Large (%1 x %1)")
+            .arg(style->pixelMetric(QStyle::PM_LargeIconSize)));
+    toolBarRadioButton->setText(tr("Toolbars (%1 x %1)")
+            .arg(style->pixelMetric(QStyle::PM_ToolBarIconSize)));
+    listViewRadioButton->setText(tr("List views (%1 x %1)")
+            .arg(style->pixelMetric(QStyle::PM_ListViewIconSize)));
+    iconViewRadioButton->setText(tr("Icon views (%1 x %1)")
+            .arg(style->pixelMetric(QStyle::PM_IconViewIconSize)));
+    tabBarRadioButton->setText(tr("Tab bars (%1 x %1)")
+            .arg(style->pixelMetric(QStyle::PM_TabBarIconSize)));
+
+    changeSize();
+}
+//! [4]
+
+//! [5]
+void MainWindow::changeSize(bool checked)
+{
+    if (!checked)
+        return;
+
+    int extent;
+
+    if (otherRadioButton->isChecked()) {
+        extent = otherSpinBox->value();
+    } else {
+        QStyle::PixelMetric metric;
+
+        if (smallRadioButton->isChecked()) {
+            metric = QStyle::PM_SmallIconSize;
+        } else if (largeRadioButton->isChecked()) {
+            metric = QStyle::PM_LargeIconSize;
+        } else if (toolBarRadioButton->isChecked()) {
+            metric = QStyle::PM_ToolBarIconSize;
+        } else if (listViewRadioButton->isChecked()) {
+            metric = QStyle::PM_ListViewIconSize;
+        } else if (iconViewRadioButton->isChecked()) {
+            metric = QStyle::PM_IconViewIconSize;
+        } else {
+            metric = QStyle::PM_TabBarIconSize;
+        }
+        extent = QApplication::style()->pixelMetric(metric);
+    }
+    previewArea->setSize(QSize(extent, extent));
+    otherSpinBox->setEnabled(otherRadioButton->isChecked());
+}
+//! [5]
+
+//! [6]
+void MainWindow::changeIcon()
+{
+    QIcon icon;
+
+    for (int row = 0; row < imagesTable->rowCount(); ++row) {
+        QTableWidgetItem *item0 = imagesTable->item(row, 0);
+        QTableWidgetItem *item1 = imagesTable->item(row, 1);
+        QTableWidgetItem *item2 = imagesTable->item(row, 2);
+
+        if (item0->checkState() == Qt::Checked) {
+            QIcon::Mode mode;
+            if (item1->text() == tr("Normal")) {
+                mode = QIcon::Normal;
+            } else if (item1->text() == tr("Active")) {
+                mode = QIcon::Active;
+            } else if (item1->text() == tr("Disabled")) {
+                mode = QIcon::Disabled;
+            } else {
+                mode = QIcon::Selected;
+            }
+
+            QIcon::State state;
+            if (item2->text() == tr("On")) {
+                state = QIcon::On;
+            } else {
+                state = QIcon::Off;
+//! [6] //! [7]
+            }
+//! [7]
+
+//! [8]
+            QString fileName = item0->data(Qt::UserRole).toString();
+            QImage image(fileName);
+            if (!image.isNull())
+                icon.addPixmap(QPixmap::fromImage(image), mode, state);
+//! [8] //! [9]
+        }
+//! [9] //! [10]
+    }
+//! [10]
+
+//! [11]
+    previewArea->setIcon(icon);
+}
+//! [11]
+
+//! [12]
+void MainWindow::addImages()
+{
+    QStringList fileNames = QFileDialog::getOpenFileNames(this,
+                                    tr("Open Images"), "",
+                                    tr("Images (*.png *.xpm *.jpg);;"
+                                       "All Files (*)"));
+    if (!fileNames.isEmpty()) {
+        foreach (QString fileName, fileNames) {
+            int row = imagesTable->rowCount();
+            imagesTable->setRowCount(row + 1);
+//! [12]
+
+//! [13]
+            QString imageName = QFileInfo(fileName).baseName();
+//! [13] //! [14]
+            QTableWidgetItem *item0 = new QTableWidgetItem(imageName);
+            item0->setData(Qt::UserRole, fileName);
+            item0->setFlags(item0->flags() & ~Qt::ItemIsEditable);
+//! [14]
+
+//! [15]
+            QTableWidgetItem *item1 = new QTableWidgetItem(tr("Normal"));
+//! [15] //! [16]
+            QTableWidgetItem *item2 = new QTableWidgetItem(tr("Off"));
+
+            if (guessModeStateAct->isChecked()) {
+                if (fileName.contains("_act")) {
+                    item1->setText(tr("Active"));
+                } else if (fileName.contains("_dis")) {
+                    item1->setText(tr("Disabled"));
+                } else if (fileName.contains("_sel")) {
+                    item1->setText(tr("Selected"));
+                }
+
+                if (fileName.contains("_on"))
+                    item2->setText(tr("On"));
+//! [16] //! [17]
+            }
+//! [17]
+
+//! [18]
+            imagesTable->setItem(row, 0, item0);
+//! [18] //! [19]
+            imagesTable->setItem(row, 1, item1);
+            imagesTable->setItem(row, 2, item2);
+            imagesTable->openPersistentEditor(item1);
+            imagesTable->openPersistentEditor(item2);
+
+            item0->setCheckState(Qt::Checked);
+        }
+    }
+}
+//! [19]
+
+//! [20]
+void MainWindow::removeAllImages()
+{
+    imagesTable->setRowCount(0);
+    changeIcon();
+}
+//! [20]
+
+void MainWindow::createPreviewGroupBox()
+{
+    previewGroupBox = new QGroupBox(tr("Preview"));
+
+    previewArea = new IconPreviewArea;
+
+    QVBoxLayout *layout = new QVBoxLayout;
+    layout->addWidget(previewArea);
+    previewGroupBox->setLayout(layout);
+}
+
+//! [21]
+void MainWindow::createImagesGroupBox()
+{
+    imagesGroupBox = new QGroupBox(tr("Images"));
+
+    imagesTable = new QTableWidget;
+    imagesTable->setSelectionMode(QAbstractItemView::NoSelection);
+    imagesTable->setItemDelegate(new ImageDelegate(this));
+//! [21]
+
+//! [22]
+    QStringList labels;
+//! [22] //! [23]
+    labels << tr("Image") << tr("Mode") << tr("State");
+
+    imagesTable->horizontalHeader()->setDefaultSectionSize(90);
+    imagesTable->setColumnCount(3);
+    imagesTable->setHorizontalHeaderLabels(labels);
+    imagesTable->horizontalHeader()->setResizeMode(0, QHeaderView::Stretch);
+    imagesTable->horizontalHeader()->setResizeMode(1, QHeaderView::Fixed);
+    imagesTable->horizontalHeader()->setResizeMode(2, QHeaderView::Fixed);
+    imagesTable->verticalHeader()->hide();
+//! [23]
+
+//! [24]
+    connect(imagesTable, SIGNAL(itemChanged(QTableWidgetItem*)),
+//! [24] //! [25]
+            this, SLOT(changeIcon()));
+
+    QVBoxLayout *layout = new QVBoxLayout;
+    layout->addWidget(imagesTable);
+    imagesGroupBox->setLayout(layout);
+}
+//! [25]
+
+//! [26]
+void MainWindow::createIconSizeGroupBox()
+{
+    iconSizeGroupBox = new QGroupBox(tr("Icon Size"));
+
+    smallRadioButton = new QRadioButton;
+    largeRadioButton = new QRadioButton;
+    toolBarRadioButton = new QRadioButton;
+    listViewRadioButton = new QRadioButton;
+    iconViewRadioButton = new QRadioButton;
+    tabBarRadioButton = new QRadioButton;
+    otherRadioButton = new QRadioButton(tr("Other:"));
+
+    otherSpinBox = new IconSizeSpinBox;
+    otherSpinBox->setRange(8, 128);
+    otherSpinBox->setValue(64);
+//! [26]
+
+//! [27]
+    connect(smallRadioButton, SIGNAL(toggled(bool)),
+            this, SLOT(changeSize(bool)));
+    connect(largeRadioButton, SIGNAL(toggled(bool)),
+            this, SLOT(changeSize(bool)));
+    connect(toolBarRadioButton, SIGNAL(toggled(bool)),
+            this, SLOT(changeSize(bool)));
+    connect(listViewRadioButton, SIGNAL(toggled(bool)),
+            this, SLOT(changeSize(bool)));
+    connect(iconViewRadioButton, SIGNAL(toggled(bool)),
+            this, SLOT(changeSize(bool)));
+    connect(tabBarRadioButton, SIGNAL(toggled(bool)),
+            this, SLOT(changeSize(bool)));
+    connect(otherRadioButton, SIGNAL(toggled(bool)),
+            this, SLOT(changeSize(bool)));
+    connect(otherSpinBox, SIGNAL(valueChanged(int)), this, SLOT(changeSize()));
+
+    QHBoxLayout *otherSizeLayout = new QHBoxLayout;
+    otherSizeLayout->addWidget(otherRadioButton);
+    otherSizeLayout->addWidget(otherSpinBox);
+    otherSizeLayout->addStretch();
+
+    QGridLayout *layout = new QGridLayout;
+    layout->addWidget(smallRadioButton, 0, 0);
+    layout->addWidget(largeRadioButton, 1, 0);
+    layout->addWidget(toolBarRadioButton, 2, 0);
+    layout->addWidget(listViewRadioButton, 0, 1);
+    layout->addWidget(iconViewRadioButton, 1, 1);
+    layout->addWidget(tabBarRadioButton, 2, 1);
+    layout->addLayout(otherSizeLayout, 3, 0, 1, 2);
+    layout->setRowStretch(4, 1);
+    iconSizeGroupBox->setLayout(layout);
+}
+//! [27]
+
+//! [28]
+void MainWindow::createActions()
+{
+    addImagesAct = new QAction(tr("&Add Images..."), this);
+    addImagesAct->setShortcut(tr("Ctrl+A"));
+    connect(addImagesAct, SIGNAL(triggered()), this, SLOT(addImages()));
+
+    removeAllImagesAct = new QAction(tr("&Remove All Images"), this);
+    removeAllImagesAct->setShortcut(tr("Ctrl+R"));
+    connect(removeAllImagesAct, SIGNAL(triggered()),
+            this, SLOT(removeAllImages()));
+
+    exitAct = new QAction(tr("&Quit"), this);
+    exitAct->setShortcuts(QKeySequence::Quit);
+    connect(exitAct, SIGNAL(triggered()), this, SLOT(close()));
+
+    styleActionGroup = new QActionGroup(this);
+    foreach (QString styleName, QStyleFactory::keys()) {
+        QAction *action = new QAction(styleActionGroup);
+        action->setText(tr("%1 Style").arg(styleName));
+        action->setData(styleName);
+        action->setCheckable(true);
+        connect(action, SIGNAL(triggered(bool)), this, SLOT(changeStyle(bool)));
+    }
+
+    guessModeStateAct = new QAction(tr("&Guess Image Mode/State"), this);
+    guessModeStateAct->setCheckable(true);
+    guessModeStateAct->setChecked(true);
+
+    aboutAct = new QAction(tr("&About"), this);
+    connect(aboutAct, SIGNAL(triggered()), this, SLOT(about()));
+
+    aboutQtAct = new QAction(tr("About &Qt"), this);
+    connect(aboutQtAct, SIGNAL(triggered()), qApp, SLOT(aboutQt()));
+}
+//! [28]
+
+//! [29]
+void MainWindow::createMenus()
+{
+    fileMenu = menuBar()->addMenu(tr("&File"));
+    fileMenu->addAction(addImagesAct);
+    fileMenu->addAction(removeAllImagesAct);
+    fileMenu->addSeparator();
+    fileMenu->addAction(exitAct);
+
+    viewMenu = menuBar()->addMenu(tr("&View"));
+    foreach (QAction *action, styleActionGroup->actions())
+        viewMenu->addAction(action);
+    viewMenu->addSeparator();
+    viewMenu->addAction(guessModeStateAct);
+
+    menuBar()->addSeparator();
+
+    helpMenu = menuBar()->addMenu(tr("&Help"));
+    helpMenu->addAction(aboutAct);
+    helpMenu->addAction(aboutQtAct);
+}
+//! [29]
+
+//! [30]
+void MainWindow::createContextMenu()
+{
+    imagesTable->setContextMenuPolicy(Qt::ActionsContextMenu);
+    imagesTable->addAction(addImagesAct);
+    imagesTable->addAction(removeAllImagesAct);
+}
+//! [30]
+
+//! [31]
+void MainWindow::checkCurrentStyle()
+{
+    foreach (QAction *action, styleActionGroup->actions()) {
+        QString styleName = action->data().toString();
+        QStyle *candidate = QStyleFactory::create(styleName);
+        Q_ASSERT(candidate);
+        if (candidate->metaObject()->className()
+                == QApplication::style()->metaObject()->className()) {
+            action->trigger();
+            return;
+        }
+        delete candidate;
+    }
+}
+//! [31]