C++ QUndoGroup::createUndoAction方法代码示例

void tst_QUndoGroup::commandTextFormat()
{
    QString binDir = QLibraryInfo::location(QLibraryInfo::BinariesPath);

    if (QProcess::execute(binDir + "/lrelease -version") != 0)
        QSKIP("lrelease is missing or broken");

    const QString tsFile = QFINDTESTDATA("testdata/qundogroup.ts");
    QVERIFY(!tsFile.isEmpty());
    QVERIFY(!QProcess::execute(binDir + "/lrelease " + tsFile));

    QTranslator translator;

    const QString qmFile = QFINDTESTDATA("testdata/qundogroup.qm");
    QVERIFY(!qmFile.isEmpty());
    QVERIFY(translator.load(qmFile));
    qApp->installTranslator(&translator);

    QUndoGroup group;
    QAction *undo_action = group.createUndoAction(0);
    QAction *redo_action = group.createRedoAction(0);

    QCOMPARE(undo_action->text(), QString("Undo-default-text"));
    QCOMPARE(redo_action->text(), QString("Redo-default-text"));

    QUndoStack stack(&group);
    stack.setActive();
    QString str;

    stack.push(new AppendCommand(&str, "foo"));
    QCOMPARE(undo_action->text(), QString("undo-prefix append undo-suffix"));
    QCOMPARE(redo_action->text(), QString("Redo-default-text"));

    stack.push(new InsertCommand(&str, 0, "bar"));
    stack.undo();
    QCOMPARE(undo_action->text(), QString("undo-prefix append undo-suffix"));
    QCOMPARE(redo_action->text(), QString("redo-prefix insert redo-suffix"));

    stack.undo();
    QCOMPARE(undo_action->text(), QString("Undo-default-text"));
    QCOMPARE(redo_action->text(), QString("redo-prefix append redo-suffix"));

    qApp->removeTranslator(&translator);
}

void tst_QUndoGroup::checkSignals()
{
    QUndoGroup group;
    QAction *undo_action = group.createUndoAction(0, QString("foo"));
    QAction *redo_action = group.createRedoAction(0, QString("bar"));
    QSignalSpy indexChangedSpy(&group, SIGNAL(indexChanged(int)));
    QSignalSpy cleanChangedSpy(&group, SIGNAL(cleanChanged(bool)));
    QSignalSpy canUndoChangedSpy(&group, SIGNAL(canUndoChanged(bool)));
    QSignalSpy undoTextChangedSpy(&group, SIGNAL(undoTextChanged(QString)));
    QSignalSpy canRedoChangedSpy(&group, SIGNAL(canRedoChanged(bool)));
    QSignalSpy redoTextChangedSpy(&group, SIGNAL(redoTextChanged(QString)));

    QString str;

    CHECK_STATE(0,          // activeStack
                true,       // clean
                false,      // canUndo
                "",         // undoText
                false,      // canRedo
                "",         // redoText
                false,      // cleanChanged
                false,      // indexChanged
                false,      // undoChanged
                false)      // redoChanged

    group.undo();
    CHECK_STATE(0,     // activeStack
                true,       // clean
                false,      // canUndo
                "",         // undoText
                false,      // canRedo
                "",         // redoText
                false,      // cleanChanged
                false,      // indexChanged
                false,      // undoChanged
                false)      // redoChanged

    group.redo();
    CHECK_STATE(0,     // activeStack
                true,       // clean
                false,      // canUndo
                "",         // undoText
                false,      // canRedo
                "",         // redoText
                false,      // cleanChanged
                false,      // indexChanged
                false,      // undoChanged
                false)      // redoChanged

    QUndoStack *stack1 = new QUndoStack(&group);
    CHECK_STATE(0,          // activeStack
                true,       // clean
                false,      // canUndo
                "",         // undoText
                false,      // canRedo
                "",         // redoText
                false,      // cleanChanged
                false,      // indexChanged
                false,      // undoChanged
                false)      // redoChanged

    stack1->push(new AppendCommand(&str, "foo"));
    CHECK_STATE(0,          // activeStack
                true,       // clean
                false,      // canUndo
                "",         // undoText
                false,      // canRedo
                "",         // redoText
                false,      // cleanChanged
                false,      // indexChanged
                false,      // undoChanged
                false)      // redoChanged

    stack1->setActive();
    CHECK_STATE(stack1,     // activeStack
                false,      // clean
                true,       // canUndo
                "append",   // undoText
                false,      // canRedo
                "",         // redoText
                true,       // cleanChanged
                true,       // indexChanged
                true,       // undoChanged
                true)       // redoChanged

    stack1->push(new InsertCommand(&str, 0, "bar"));
    CHECK_STATE(stack1,     // activeStack
                false,      // clean
                true,       // canUndo
                "insert",   // undoText
                false,      // canRedo
                "",         // redoText
                false,      // cleanChanged
                true,       // indexChanged
                true,       // undoChanged
                true)       // redoChanged

    stack1->undo();
    CHECK_STATE(stack1,     // activeStack
                false,      // clean
//.........这里部分代码省略.........

MainToolBar::MainToolBar(QWidget *parent)
    : QToolBar(parent)
    , mCommandButton(new CommandButton(this))
{
    setObjectName(QLatin1String("MainToolBar"));
    setWindowTitle(tr("Main Toolbar"));
    setToolButtonStyle(Qt::ToolButtonFollowStyle);

    QIcon newIcon(QLatin1String(":images/24x24/document-new.png"));
    QIcon openIcon(QLatin1String(":images/24x24/document-open.png"));
    QIcon saveIcon(QLatin1String(":images/24x24/document-save.png"));
    QIcon undoIcon(QLatin1String(":images/24x24/edit-undo.png"));
    QIcon redoIcon(QLatin1String(":images/24x24/edit-redo.png"));

    newIcon.addFile(QLatin1String(":images/16x16/document-new.png"));
    openIcon.addFile(QLatin1String(":images/16x16/document-open.png"));
    saveIcon.addFile(QLatin1String(":images/16x16/document-save.png"));
    redoIcon.addFile(QLatin1String(":images/16x16/edit-redo.png"));
    undoIcon.addFile(QLatin1String(":images/16x16/edit-undo.png"));

    mNewButton = new QToolButton(this);
    mOpenAction = new QAction(this);
    mSaveAction = new QAction(this);

    QMenu *newMenu = new QMenu(this);
    newMenu->addAction(ActionManager::action("NewMap"));
    newMenu->addAction(ActionManager::action("NewTileset"));
    mNewButton->setMenu(newMenu);
    mNewButton->setPopupMode(QToolButton::InstantPopup);

    QUndoGroup *undoGroup = DocumentManager::instance()->undoGroup();
    mUndoAction = undoGroup->createUndoAction(this, tr("Undo"));
    mRedoAction = undoGroup->createRedoAction(this, tr("Redo"));

    mNewButton->setIcon(newIcon);
    mOpenAction->setIcon(openIcon);
    mSaveAction->setIcon(saveIcon);
    mUndoAction->setIcon(undoIcon);
    mRedoAction->setIcon(redoIcon);

    Utils::setThemeIcon(mNewButton, "document-new");
    Utils::setThemeIcon(mOpenAction, "document-open");
    Utils::setThemeIcon(mSaveAction, "document-save");
    Utils::setThemeIcon(mRedoAction, "edit-redo");
    Utils::setThemeIcon(mUndoAction, "edit-undo");

    mRedoAction->setPriority(QAction::LowPriority);

    addWidget(mNewButton);
    addAction(mOpenAction);
    addAction(mSaveAction);
    addSeparator();
    addAction(mUndoAction);
    addAction(mRedoAction);
    addSeparator();
    addWidget(mCommandButton);

    DocumentManager *documentManager = DocumentManager::instance();
    connect(mOpenAction, &QAction::triggered, documentManager, &DocumentManager::openFileDialog);
    connect(mSaveAction, &QAction::triggered, documentManager, &DocumentManager::saveFile);

    connect(documentManager, &DocumentManager::currentDocumentChanged,
            this, &MainToolBar::currentDocumentChanged);

    connect(this, &MainToolBar::orientationChanged,
            this, &MainToolBar::onOrientationChanged);

    retranslateUi();
}

MainWindow::MainWindow(QWidget *parent, Qt::WFlags flags)
    : QMainWindow(parent, flags)
    , mUi(new Ui::MainWindow)
    , mMapDocument(0)
    , mActionHandler(new MapDocumentActionHandler(this))
    , mLayerDock(new LayerDock(this))
    , mTilesetDock(new TilesetDock(this))
    , mZoomLabel(new QLabel)
    , mStatusInfoLabel(new QLabel)
    , mClipboardManager(new ClipboardManager(this))
    , mDocumentManager(DocumentManager::instance())
{
    mUi->setupUi(this);
    setCentralWidget(mDocumentManager->widget());

    PluginManager::instance()->loadPlugins();

#ifdef Q_WS_MAC
    MacSupport::addFullscreen(this);
#endif

    Preferences *preferences = Preferences::instance();

    QIcon redoIcon(QLatin1String(":images/16x16/edit-redo.png"));
    QIcon undoIcon(QLatin1String(":images/16x16/edit-undo.png"));

    QIcon tiledIcon(QLatin1String(":images/tiled-icon-16.png"));
    tiledIcon.addFile(QLatin1String(":images/tiled-icon-32.png"));
    setWindowIcon(tiledIcon);

    // Add larger icon versions for actions used in the tool bar
    QIcon newIcon = mUi->actionNew->icon();
    QIcon openIcon = mUi->actionOpen->icon();
    QIcon saveIcon = mUi->actionSave->icon();
    newIcon.addFile(QLatin1String(":images/24x24/document-new.png"));
    openIcon.addFile(QLatin1String(":images/24x24/document-open.png"));
    saveIcon.addFile(QLatin1String(":images/24x24/document-save.png"));
    redoIcon.addFile(QLatin1String(":images/24x24/edit-redo.png"));
    undoIcon.addFile(QLatin1String(":images/24x24/edit-undo.png"));
    mUi->actionNew->setIcon(newIcon);
    mUi->actionOpen->setIcon(openIcon);
    mUi->actionSave->setIcon(saveIcon);

    QUndoGroup *undoGroup = mDocumentManager->undoGroup();
    QAction *undoAction = undoGroup->createUndoAction(this, tr("Undo"));
    QAction *redoAction = undoGroup->createRedoAction(this, tr("Redo"));
    mUi->mainToolBar->setToolButtonStyle(Qt::ToolButtonFollowStyle);
    mUi->actionNew->setPriority(QAction::LowPriority);
    redoAction->setPriority(QAction::LowPriority);
    redoAction->setIcon(redoIcon);
    undoAction->setIcon(undoIcon);
    redoAction->setIconText(tr("Redo"));
    undoAction->setIconText(tr("Undo"));
    connect(undoGroup, SIGNAL(cleanChanged(bool)), SLOT(updateWindowTitle()));

    UndoDock *undoDock = new UndoDock(undoGroup, this);

    addDockWidget(Qt::RightDockWidgetArea, mLayerDock);
    addDockWidget(Qt::RightDockWidgetArea, undoDock);
    tabifyDockWidget(undoDock, mLayerDock);
    addDockWidget(Qt::RightDockWidgetArea, mTilesetDock);

    statusBar()->addPermanentWidget(mZoomLabel);

    mUi->actionNew->setShortcuts(QKeySequence::New);
    mUi->actionOpen->setShortcuts(QKeySequence::Open);
    mUi->actionSave->setShortcuts(QKeySequence::Save);
    mUi->actionSaveAs->setShortcuts(QKeySequence::SaveAs);
    mUi->actionClose->setShortcuts(QKeySequence::Close);
    mUi->actionQuit->setShortcuts(QKeySequence::Quit);
    mUi->actionCut->setShortcuts(QKeySequence::Cut);
    mUi->actionCopy->setShortcuts(QKeySequence::Copy);
    mUi->actionPaste->setShortcuts(QKeySequence::Paste);
    mUi->actionDelete->setShortcuts(QKeySequence::Delete);
    undoAction->setShortcuts(QKeySequence::Undo);
    redoAction->setShortcuts(QKeySequence::Redo);

    mUi->actionShowGrid->setChecked(preferences->showGrid());
    mUi->actionSnapToGrid->setChecked(preferences->snapToGrid());
    mUi->actionHighlightCurrentLayer->setChecked(preferences->highlightCurrentLayer());

    // Make sure Ctrl+= also works for zooming in
    QList<QKeySequence> keys = QKeySequence::keyBindings(QKeySequence::ZoomIn);
    keys += QKeySequence(tr("Ctrl+="));
    keys += QKeySequence(tr("+"));
    mUi->actionZoomIn->setShortcuts(keys);
    keys = QKeySequence::keyBindings(QKeySequence::ZoomOut);
    keys += QKeySequence(tr("-"));
    mUi->actionZoomOut->setShortcuts(keys);

    mUi->menuEdit->insertAction(mUi->actionCut, undoAction);
    mUi->menuEdit->insertAction(mUi->actionCut, redoAction);
    mUi->menuEdit->insertSeparator(mUi->actionCut);
    mUi->menuEdit->insertAction(mUi->actionPreferences,
                                mActionHandler->actionSelectAll());
    mUi->menuEdit->insertAction(mUi->actionPreferences,
                                mActionHandler->actionSelectNone());
    mUi->menuEdit->insertSeparator(mUi->actionPreferences);
    mUi->mainToolBar->addAction(undoAction);
    mUi->mainToolBar->addAction(redoAction);
//.........这里部分代码省略.........

MainWindow::MainWindow(QWidget *parent, Qt::WindowFlags flags)
    : QMainWindow(parent, flags)
    , mUi(new Ui::MainWindow)
    , mMapDocument(0)
    , mActionHandler(new MapDocumentActionHandler(this))
    , mMapsDock(new MapsDock(this))
    , mTilesetDock(new TilesetDock(this))
    , mMiniMapDock(new MiniMapDock(this))
    , mZoomable(0)
    , mZoomComboBox(new QComboBox)
    , mStatusInfoLabel(new QLabel)
    , mValidationErrorWidget(new QWidget)
    , mValidationErrorLabel(new QLabel)
    , mDocumentManager(DocumentManager::instance())
    , mQuickStampManager(new QuickStampManager(this))
    , mToolManager(new ToolManager(this))
    , mKodableMapValidator(new KodableMapValidator(this))
{
    mUi->setupUi(this);
    setCentralWidget(mDocumentManager->widget());

#ifdef Q_OS_MAC
    MacSupport::addFullscreen(this);
#endif

    Preferences *preferences = Preferences::instance();

    QIcon redoIcon(QLatin1String(":images/16x16/edit-redo.png"));
    QIcon undoIcon(QLatin1String(":images/16x16/edit-undo.png"));

    QIcon windowIcon(QLatin1String(":images/kodable-editor-icon.png"));
    setWindowIcon(windowIcon);

    // Add larger icon versions for actions used in the tool bar
    QIcon newIcon = mUi->actionNew->icon();
    QIcon openIcon = mUi->actionOpen->icon();
    QIcon saveIcon = mUi->actionSave->icon();
    newIcon.addFile(QLatin1String(":images/24x24/document-new.png"));
    openIcon.addFile(QLatin1String(":images/24x24/document-open.png"));
    saveIcon.addFile(QLatin1String(":images/24x24/document-save.png"));
    redoIcon.addFile(QLatin1String(":images/24x24/edit-redo.png"));
    undoIcon.addFile(QLatin1String(":images/24x24/edit-undo.png"));
    mUi->actionNew->setIcon(newIcon);
    mUi->actionOpen->setIcon(openIcon);
    mUi->actionSave->setIcon(saveIcon);

    QUndoGroup *undoGroup = mDocumentManager->undoGroup();
    QAction *undoAction = undoGroup->createUndoAction(this, tr("Undo"));
    QAction *redoAction = undoGroup->createRedoAction(this, tr("Redo"));
    mUi->mainToolBar->setToolButtonStyle(Qt::ToolButtonFollowStyle);
    mUi->actionNew->setPriority(QAction::LowPriority);
    redoAction->setPriority(QAction::LowPriority);
    redoAction->setIcon(redoIcon);
    undoAction->setIcon(undoIcon);
    redoAction->setIconText(tr("Redo"));
    undoAction->setIconText(tr("Undo"));
    connect(undoGroup, SIGNAL(cleanChanged(bool)), SLOT(updateWindowTitle()));

    UndoDock *undoDock = new UndoDock(undoGroup, this);
    PropertiesDock *propertiesDock = new PropertiesDock(this);

    addDockWidget(Qt::LeftDockWidgetArea, undoDock);
    addDockWidget(Qt::LeftDockWidgetArea, mMapsDock);
    addDockWidget(Qt::RightDockWidgetArea, mMiniMapDock);
    addDockWidget(Qt::RightDockWidgetArea, mTilesetDock);
    addDockWidget(Qt::RightDockWidgetArea, propertiesDock);

    tabifyDockWidget(undoDock, mMapsDock);

    // These dock widgets may not be immediately useful to many people, so
    // they are hidden by default.
    undoDock->setVisible(false);
    mMapsDock->setVisible(false);
    mMiniMapDock->setVisible(false);

    QHBoxLayout *errorBoxLayout = new QHBoxLayout;
    QLabel *iconLabel = new QLabel;
    iconLabel->setPixmap(QPixmap(QLatin1String(":images/16x16/dialog-warning.png")));
    errorBoxLayout->addWidget(iconLabel);
    errorBoxLayout->addWidget(mValidationErrorLabel);
    mValidationErrorWidget->setLayout(errorBoxLayout);

    mValidationErrorWidget->setVisible(false);
    statusBar()->addPermanentWidget(mValidationErrorWidget);
    statusBar()->addPermanentWidget(mZoomComboBox);

    mUi->actionNew->setShortcuts(QKeySequence::New);
    mUi->actionOpen->setShortcuts(QKeySequence::Open);
    mUi->actionSave->setShortcuts(QKeySequence::Save);
    mUi->actionSaveAs->setShortcuts(QKeySequence::SaveAs);
    mUi->actionClose->setShortcuts(QKeySequence::Close);
    mUi->actionQuit->setShortcuts(QKeySequence::Quit);
    mUi->actionCut->setShortcuts(QKeySequence::Cut);
    mUi->actionCopy->setShortcuts(QKeySequence::Copy);
    mUi->actionPaste->setShortcuts(QKeySequence::Paste);
    mUi->actionDelete->setShortcuts(QKeySequence::Delete);
    undoAction->setShortcuts(QKeySequence::Undo);
    redoAction->setShortcuts(QKeySequence::Redo);

    mUi->actionShowGrid->setChecked(preferences->showGrid());
//.........这里部分代码省略.........

NaMainWindow::NaMainWindow()
    : nutateThread(NULL)
{
    ui.setupUi(this);
    //QMetaObject::connectSlotsByName(this); This is apparently already called by setupUi, so calling it again creates repeat trigger events
    annotationSession=0;

    // Wire up MIP viewer
    // Status bar message
    connect(ui.naLargeMIPWidget, SIGNAL(statusMessage(const QString&)),
            statusBar(), SLOT(showMessage(const QString&)));
    connect(ui.gammaWidget_MIP, SIGNAL(gammaBrightnessChanged(double)),
            ui.naLargeMIPWidget, SLOT(setGammaBrightness(double)));

    // Wire up Z-stack / HDR viewer
    ui.HDR_checkBox->setChecked(true);
    ui.naZStackWidget->setHDRCheckState(true);
    ui.gammaWidget_Zstack->hide();
    connect(ui.HDR_checkBox, SIGNAL(stateChanged(int)),
            ui.naZStackWidget, SLOT(setHDRCheckState(int)));
    connect(ui.naZStackWidget, SIGNAL(changedHDRCheckState(bool)),
            ui.gammaWidget_Zstack, SLOT(setVisible(bool)));
    connect(ui.gammaWidget_Zstack, SIGNAL(gammaBrightnessChanged(double)),
            ui.naZStackWidget, SLOT(setGammaBrightness(double)));
    connect(ui.HDRRed_pushButton, SIGNAL(clicked()),
            ui.naZStackWidget, SLOT(setRedChannel()));
    connect(ui.HDRGreen_pushButton, SIGNAL(clicked()),
            ui.naZStackWidget, SLOT(setGreenChannel()));
    connect(ui.HDRBlue_pushButton, SIGNAL(clicked()),
            ui.naZStackWidget, SLOT(setBlueChannel()));
    connect(ui.ZSlice_horizontalScrollBar, SIGNAL(valueChanged(int)),
            ui.naZStackWidget, SLOT(setCurrentZSlice(int)));
    connect(ui.naZStackWidget, SIGNAL(curZsliceChanged(int)),
            ui.ZSlice_horizontalScrollBar, SLOT(setValue(int)));
    connect(ui.BoxSize_spinBox, SIGNAL(valueChanged(int)),
            ui.naZStackWidget, SLOT(updateROIsize(int)));
    connect(ui.naZStackWidget, SIGNAL(boxSizeChanged(int)),
            ui.BoxSize_spinBox, SLOT(setValue(int)));

    // 3D viewer
    connect(ui.rotationResetButton, SIGNAL(clicked()),
            ui.v3dr_glwidget, SLOT(resetRotation()));
    connect(ui.nutateButton, SIGNAL(toggled(bool)),
            this, SLOT(setNutate(bool)));
    // 3D rotation
    connect(&(ui.v3dr_glwidget->cameraModel), SIGNAL(rotationChanged(const Rotation3D&)),
            this, SLOT(on3DViewerRotationChanged(const Rotation3D&)));
    connect(ui.rotXWidget, SIGNAL(angleChanged(int)),
            this, SLOT(update3DViewerXYZBodyRotation()));
    connect(ui.rotYWidget, SIGNAL(angleChanged(int)),
            this, SLOT(update3DViewerXYZBodyRotation()));
    connect(ui.rotZWidget, SIGNAL(angleChanged(int)),
            this, SLOT(update3DViewerXYZBodyRotation()));
    // 3D gamma correction
    connect(ui.gammaWidget_3D, SIGNAL(gammaBrightnessChanged(double)),
            ui.v3dr_glwidget, SLOT(setGammaBrightness(double)));
    connect(ui.gammaWidget_3D, SIGNAL(gammaBrightnessChanged(double)),
            this, SLOT(updateThumbnailGamma(double)));
    connect(ui.colorResetButton, SIGNAL(clicked()),
            ui.gammaWidget_3D, SLOT(reset()));


    // Whether to use common zoom and focus in MIP, ZStack and 3D viewers
    connect(ui.actionLink_viewers, SIGNAL(toggled(bool)),
            this, SLOT(unifyCameras(bool)));
    unifyCameras(true); // Start with cameras linked
    // Crosshair
    connect(ui.actionShow_Crosshair, SIGNAL(toggled(bool)),
            ui.naLargeMIPWidget, SLOT(showCrosshair(bool)));
    connect(ui.actionShow_Crosshair, SIGNAL(toggled(bool)),
            ui.v3dr_glwidget, SLOT(showCrosshair(bool)));

    // Create "Undo" menu options
    // TODO - figure out which of these variables to expose once we have a QUndoCommand to work with.
    QUndoGroup * undoGroup = new QUndoGroup(this);
    QAction * undoAction = undoGroup->createUndoAction(this);
    QAction * redoAction = undoGroup->createRedoAction(this);
    ui.menuEdit->insertAction(ui.menuEdit->actions().at(0), redoAction);
    ui.menuEdit->insertAction(redoAction, undoAction);
}