--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/examples/widgets/icons/mainwindow.cpp Mon Jan 11 14:00:40 2010 +0000
@@ -0,0 +1,443 @@
+/****************************************************************************
+**
+** Copyright (C) 2009 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.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the Technology Preview License Agreement accompanying
+** this package.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file. Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain additional
+** rights. These rights are described in the Nokia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** If you have questions regarding the use of this file, please contact
+** Nokia at qt-info@nokia.com.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#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]