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Diffstat (limited to 'tests/manual/examples/widgets/widgets/icons/mainwindow.cpp')
| -rw-r--r-- | tests/manual/examples/widgets/widgets/icons/mainwindow.cpp | 478 |
1 files changed, 478 insertions, 0 deletions
diff --git a/tests/manual/examples/widgets/widgets/icons/mainwindow.cpp b/tests/manual/examples/widgets/widgets/icons/mainwindow.cpp new file mode 100644 index 0000000000..f893575f76 --- /dev/null +++ b/tests/manual/examples/widgets/widgets/icons/mainwindow.cpp @@ -0,0 +1,478 @@ +// Copyright (C) 2016 The Qt Company Ltd. +// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause + +#include "mainwindow.h" +#include "iconpreviewarea.h" +#include "iconsizespinbox.h" +#include "imagedelegate.h" + +#include <QActionGroup> +#include <QApplication> +#include <QButtonGroup> +#include <QCheckBox> +#include <QFileDialog> +#include <QHeaderView> +#include <QFormLayout> +#include <QGridLayout> +#include <QGroupBox> +#include <QImageReader> +#include <QLabel> +#include <QMenuBar> +#include <QMessageBox> +#include <QRadioButton> +#include <QScreen> +#include <QStandardPaths> +#include <QStyleFactory> +#include <QTableWidget> +#include <QWindow> + +//! [40] +enum { OtherSize = QStyle::PM_CustomBase }; +//! [40] + +//! [0] +MainWindow::MainWindow(QWidget *parent) + : QMainWindow(parent) +{ + QWidget *centralWidget = new QWidget(this); + setCentralWidget(centralWidget); + + createActions(); + + QGridLayout *mainLayout = new QGridLayout(centralWidget); + + QGroupBox *previewGroupBox = new QGroupBox(tr("Preview")); + previewArea = new IconPreviewArea(previewGroupBox); + QVBoxLayout *previewLayout = new QVBoxLayout(previewGroupBox); + previewLayout->addWidget(previewArea); + + mainLayout->addWidget(previewGroupBox, 0, 0, 1, 2); + mainLayout->addWidget(createImagesGroupBox(), 1, 0); + QVBoxLayout *vBox = new QVBoxLayout; + vBox->addWidget(createIconSizeGroupBox()); + vBox->addWidget(createHighDpiIconSizeGroupBox()); + vBox->addItem(new QSpacerItem(0, 0, QSizePolicy::Ignored, QSizePolicy::MinimumExpanding)); + mainLayout->addLayout(vBox, 1, 1); + createContextMenu(); + + setWindowTitle(tr("Icons")); + checkCurrentStyle(); + sizeButtonGroup->button(OtherSize)->click(); +} +//! [0] + +//! [44] +void MainWindow::show() +{ + QMainWindow::show(); + connect(windowHandle(), &QWindow::screenChanged, this, &MainWindow::screenChanged); + screenChanged(); +} +//! [44] + +//! [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; + + const QAction *action = qobject_cast<QAction *>(sender()); +//! [2] //! [3] + QStyle *style = QStyleFactory::create(action->data().toString()); +//! [3] //! [4] + Q_ASSERT(style); + QApplication::setStyle(style); + + const QList<QAbstractButton*> buttons = sizeButtonGroup->buttons(); + for (QAbstractButton *button : buttons) { + const QStyle::PixelMetric metric = static_cast<QStyle::PixelMetric>(sizeButtonGroup->id(button)); + const int value = style->pixelMetric(metric); + switch (metric) { + case QStyle::PM_SmallIconSize: + button->setText(tr("Small (%1 x %1)").arg(value)); + break; + case QStyle::PM_LargeIconSize: + button->setText(tr("Large (%1 x %1)").arg(value)); + break; + case QStyle::PM_ToolBarIconSize: + button->setText(tr("Toolbars (%1 x %1)").arg(value)); + break; + case QStyle::PM_ListViewIconSize: + button->setText(tr("List views (%1 x %1)").arg(value)); + break; + case QStyle::PM_IconViewIconSize: + button->setText(tr("Icon views (%1 x %1)").arg(value)); + break; + case QStyle::PM_TabBarIconSize: + button->setText(tr("Tab bars (%1 x %1)").arg(value)); + break; + default: + break; + } + } + + triggerChangeSize(); +} +//! [4] + +//! [5] +void MainWindow::changeSize(QAbstractButton *button, bool checked) +{ + if (!checked) + return; + + const int index = sizeButtonGroup->id(button); + const bool other = index == int(OtherSize); + const int extent = other + ? otherSpinBox->value() + : QApplication::style()->pixelMetric(static_cast<QStyle::PixelMetric>(index)); + + previewArea->setSize(QSize(extent, extent)); + otherSpinBox->setEnabled(other); +} + +void MainWindow::triggerChangeSize() +{ + changeSize(sizeButtonGroup->checkedButton(), true); +} +//! [5] + +//! [6] +void MainWindow::changeIcon() +{ + QIcon icon; + + for (int row = 0; row < imagesTable->rowCount(); ++row) { + const QTableWidgetItem *fileItem = imagesTable->item(row, 0); + const QTableWidgetItem *modeItem = imagesTable->item(row, 1); + const QTableWidgetItem *stateItem = imagesTable->item(row, 2); + + if (fileItem->checkState() == Qt::Checked) { + const int modeIndex = IconPreviewArea::iconModeNames().indexOf(modeItem->text()); + Q_ASSERT(modeIndex >= 0); + const int stateIndex = IconPreviewArea::iconStateNames().indexOf(stateItem->text()); + Q_ASSERT(stateIndex >= 0); + const QIcon::Mode mode = IconPreviewArea::iconModes().at(modeIndex); + const QIcon::State state = IconPreviewArea::iconStates().at(stateIndex); +//! [6] + +//! [8] + const QString fileName = fileItem->data(Qt::UserRole).toString(); + QImage image(fileName); + if (!image.isNull()) + icon.addPixmap(QPixmap::fromImage(image), mode, state); +//! [8] + } + } +//! [11] + previewArea->setIcon(icon); +//! [11] +} + +void MainWindow::addSampleImages() +{ + addImages(QLatin1String(SRCDIR) + QLatin1String("/images")); +} + +void MainWindow::addOtherImages() +{ + static bool firstInvocation = true; + QString directory; + if (firstInvocation) { + firstInvocation = false; + directory = QStandardPaths::standardLocations(QStandardPaths::PicturesLocation).value(0, QString()); + } + addImages(directory); +} + +//! [12] +void MainWindow::addImages(const QString &directory) +{ + QFileDialog fileDialog(this, tr("Open Images"), directory); + QStringList mimeTypeFilters; + const QList<QByteArray> mimeTypes = QImageReader::supportedMimeTypes(); + for (const QByteArray &mimeTypeName : mimeTypes) + mimeTypeFilters.append(mimeTypeName); + mimeTypeFilters.sort(); + fileDialog.setMimeTypeFilters(mimeTypeFilters); + fileDialog.selectMimeTypeFilter(QLatin1String("image/png")); + fileDialog.setAcceptMode(QFileDialog::AcceptOpen); + fileDialog.setFileMode(QFileDialog::ExistingFiles); + if (!nativeFileDialogAct->isChecked()) + fileDialog.setOption(QFileDialog::DontUseNativeDialog); + if (fileDialog.exec() == QDialog::Accepted) + loadImages(fileDialog.selectedFiles()); +//! [12] +} + +void MainWindow::loadImages(const QStringList &fileNames) +{ + for (const QString &fileName : fileNames) { + const int row = imagesTable->rowCount(); + imagesTable->setRowCount(row + 1); +//! [13] + const QFileInfo fileInfo(fileName); + const QString imageName = fileInfo.baseName(); + const QString fileName2x = fileInfo.absolutePath() + + QLatin1Char('/') + imageName + QLatin1String("@2x.") + fileInfo.suffix(); + const QFileInfo fileInfo2x(fileName2x); + const QImage image(fileName); + const QString toolTip = + tr("Directory: %1\nFile: %2\nFile@2x: %3\nSize: %4x%5") + .arg(QDir::toNativeSeparators(fileInfo.absolutePath()), fileInfo.fileName()) + .arg(fileInfo2x.exists() ? fileInfo2x.fileName() : tr("<None>")) + .arg(image.width()).arg(image.height()); + QTableWidgetItem *fileItem = new QTableWidgetItem(imageName); + fileItem->setData(Qt::UserRole, fileName); + fileItem->setIcon(QPixmap::fromImage(image)); + fileItem->setFlags((fileItem->flags() | Qt::ItemIsUserCheckable) & ~Qt::ItemIsEditable); + fileItem->setToolTip(toolTip); +//! [13] + +//! [15] + QIcon::Mode mode = QIcon::Normal; + QIcon::State state = QIcon::Off; + if (guessModeStateAct->isChecked()) { + if (imageName.contains(QLatin1String("_act"), Qt::CaseInsensitive)) + mode = QIcon::Active; + else if (imageName.contains(QLatin1String("_dis"), Qt::CaseInsensitive)) + mode = QIcon::Disabled; + else if (imageName.contains(QLatin1String("_sel"), Qt::CaseInsensitive)) + mode = QIcon::Selected; + + if (imageName.contains(QLatin1String("_on"), Qt::CaseInsensitive)) + state = QIcon::On; +//! [15] + } + +//! [18] + imagesTable->setItem(row, 0, fileItem); + QTableWidgetItem *modeItem = + new QTableWidgetItem(IconPreviewArea::iconModeNames().at(IconPreviewArea::iconModes().indexOf(mode))); + modeItem->setToolTip(toolTip); + imagesTable->setItem(row, 1, modeItem); + QTableWidgetItem *stateItem = + new QTableWidgetItem(IconPreviewArea::iconStateNames().at(IconPreviewArea::iconStates().indexOf(state))); + stateItem->setToolTip(toolTip); + imagesTable->setItem(row, 2, stateItem); + imagesTable->openPersistentEditor(modeItem); + imagesTable->openPersistentEditor(stateItem); + + fileItem->setCheckState(Qt::Checked); +//! [18] + } +} + +//! [20] +void MainWindow::removeAllImages() +{ + imagesTable->setRowCount(0); + changeIcon(); +} +//! [20] + +//! [21] +QWidget *MainWindow::createImagesGroupBox() +{ + QGroupBox *imagesGroupBox = new QGroupBox(tr("Images")); + + imagesTable = new QTableWidget; + imagesTable->setSelectionMode(QAbstractItemView::NoSelection); + imagesTable->setItemDelegate(new ImageDelegate(this)); +//! [21] + +//! [22] + const QStringList labels({tr("Image"), tr("Mode"), tr("State")}); + + imagesTable->horizontalHeader()->setDefaultSectionSize(90); + imagesTable->setColumnCount(3); + imagesTable->setHorizontalHeaderLabels(labels); + imagesTable->horizontalHeader()->setSectionResizeMode(0, QHeaderView::Stretch); + imagesTable->horizontalHeader()->setSectionResizeMode(1, QHeaderView::Fixed); + imagesTable->horizontalHeader()->setSectionResizeMode(2, QHeaderView::Fixed); + imagesTable->verticalHeader()->hide(); +//! [22] + +//! [24] + connect(imagesTable, &QTableWidget::itemChanged, + this, &MainWindow::changeIcon); + + QVBoxLayout *layout = new QVBoxLayout(imagesGroupBox); + layout->addWidget(imagesTable); + return imagesGroupBox; +//! [24] +} + +//! [26] +QWidget *MainWindow::createIconSizeGroupBox() +{ + QGroupBox *iconSizeGroupBox = new QGroupBox(tr("Icon Size")); + + sizeButtonGroup = new QButtonGroup(this); + sizeButtonGroup->setExclusive(true); + + connect(sizeButtonGroup, &QButtonGroup::buttonToggled, + this, &MainWindow::changeSize); + + QRadioButton *smallRadioButton = new QRadioButton; + sizeButtonGroup->addButton(smallRadioButton, QStyle::PM_SmallIconSize); + QRadioButton *largeRadioButton = new QRadioButton; + sizeButtonGroup->addButton(largeRadioButton, QStyle::PM_LargeIconSize); + QRadioButton *toolBarRadioButton = new QRadioButton; + sizeButtonGroup->addButton(toolBarRadioButton, QStyle::PM_ToolBarIconSize); + QRadioButton *listViewRadioButton = new QRadioButton; + sizeButtonGroup->addButton(listViewRadioButton, QStyle::PM_ListViewIconSize); + QRadioButton *iconViewRadioButton = new QRadioButton; + sizeButtonGroup->addButton(iconViewRadioButton, QStyle::PM_IconViewIconSize); + QRadioButton *tabBarRadioButton = new QRadioButton; + sizeButtonGroup->addButton(tabBarRadioButton, QStyle::PM_TabBarIconSize); + QRadioButton *otherRadioButton = new QRadioButton(tr("Other:")); + sizeButtonGroup->addButton(otherRadioButton, OtherSize); + otherSpinBox = new IconSizeSpinBox; + otherSpinBox->setRange(8, 256); + const QString spinBoxToolTip = + tr("Enter a custom size within %1..%2") + .arg(otherSpinBox->minimum()).arg(otherSpinBox->maximum()); + otherSpinBox->setValue(64); + otherSpinBox->setToolTip(spinBoxToolTip); + otherRadioButton->setToolTip(spinBoxToolTip); +//! [26] + +//! [27] + connect(otherSpinBox, &QSpinBox::valueChanged, + this, &MainWindow::triggerChangeSize); + + QHBoxLayout *otherSizeLayout = new QHBoxLayout; + otherSizeLayout->addWidget(otherRadioButton); + otherSizeLayout->addWidget(otherSpinBox); + otherSizeLayout->addStretch(); + + QGridLayout *layout = new QGridLayout(iconSizeGroupBox); + 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); + return iconSizeGroupBox; +//! [27] +} + +void MainWindow::screenChanged() +{ + devicePixelRatioLabel->setText(QString::number(devicePixelRatio())); + if (const QWindow *window = windowHandle()) { + const QScreen *screen = window->screen(); + const QString screenDescription = + tr("\"%1\" (%2x%3)").arg(screen->name()) + .arg(screen->geometry().width()).arg(screen->geometry().height()); + screenNameLabel->setText(screenDescription); + } + changeIcon(); +} + +QWidget *MainWindow::createHighDpiIconSizeGroupBox() +{ + QGroupBox *highDpiGroupBox = new QGroupBox(tr("High DPI Scaling")); + QFormLayout *layout = new QFormLayout(highDpiGroupBox); + devicePixelRatioLabel = new QLabel(highDpiGroupBox); + screenNameLabel = new QLabel(highDpiGroupBox); + layout->addRow(tr("Screen:"), screenNameLabel); + layout->addRow(tr("Device pixel ratio:"), devicePixelRatioLabel); + return highDpiGroupBox; +} + +//! [28] +void MainWindow::createActions() +{ + QMenu *fileMenu = menuBar()->addMenu(tr("&File")); + + addSampleImagesAct = new QAction(tr("Add &Sample Images..."), this); + addSampleImagesAct->setShortcut(tr("Ctrl+A")); + connect(addSampleImagesAct, &QAction::triggered, this, &MainWindow::addSampleImages); + fileMenu->addAction(addSampleImagesAct); + + addOtherImagesAct = new QAction(tr("&Add Images..."), this); + addOtherImagesAct->setShortcut(QKeySequence::Open); + connect(addOtherImagesAct, &QAction::triggered, this, &MainWindow::addOtherImages); + fileMenu->addAction(addOtherImagesAct); + + removeAllImagesAct = new QAction(tr("&Remove All Images"), this); + removeAllImagesAct->setShortcut(tr("Ctrl+R")); + connect(removeAllImagesAct, &QAction::triggered, + this, &MainWindow::removeAllImages); + fileMenu->addAction(removeAllImagesAct); + + fileMenu->addSeparator(); + + QAction *exitAct = fileMenu->addAction(tr("&Quit"), qApp, &QCoreApplication::quit); + exitAct->setShortcuts(QKeySequence::Quit); + + QMenu *viewMenu = menuBar()->addMenu(tr("&View")); + + styleActionGroup = new QActionGroup(this); + const QStringList styleKeys = QStyleFactory::keys(); + for (const QString &styleName : styleKeys) { + QAction *action = new QAction(tr("%1 Style").arg(styleName), styleActionGroup); + action->setData(styleName); + action->setCheckable(true); + connect(action, &QAction::triggered, this, &MainWindow::changeStyle); + viewMenu->addAction(action); + } + + QMenu *settingsMenu = menuBar()->addMenu(tr("&Settings")); + + guessModeStateAct = new QAction(tr("&Guess Image Mode/State"), this); + guessModeStateAct->setCheckable(true); + guessModeStateAct->setChecked(true); + settingsMenu->addAction(guessModeStateAct); + + nativeFileDialogAct = new QAction(tr("&Use Native File Dialog"), this); + nativeFileDialogAct->setCheckable(true); + nativeFileDialogAct->setChecked(true); + settingsMenu->addAction(nativeFileDialogAct); + + QMenu *helpMenu = menuBar()->addMenu(tr("&Help")); + helpMenu->addAction(tr("&About"), this, &MainWindow::about); + helpMenu->addAction(tr("About &Qt"), qApp, &QApplication::aboutQt); +} +//! [28] + +//! [30] +void MainWindow::createContextMenu() +{ + imagesTable->setContextMenuPolicy(Qt::ActionsContextMenu); + imagesTable->addAction(addSampleImagesAct); + imagesTable->addAction(addOtherImagesAct); + imagesTable->addAction(removeAllImagesAct); +} +//! [30] + +//! [31] +void MainWindow::checkCurrentStyle() +{ + const QList<QAction *> actions = styleActionGroup->actions(); + for (QAction *action : actions) { + const QString styleName = action->data().toString(); + const std::unique_ptr<QStyle> candidate{QStyleFactory::create(styleName)}; + Q_ASSERT(candidate); + if (candidate->metaObject()->className() + == QApplication::style()->metaObject()->className()) { + action->trigger(); + return; + } + } +} +//! [31] |