Add some additional shortcuts for actions

Add Cmd+Shift+- for decreasing font size on macOS.
Do not add Cmd+= for increasing size, because it conflicts with the
existing shortcut for "Replace and Find Next".

Sprinkle some Backspace shortcuts in addition to Delete for removing
items. There are (laptop) keyboards that either do not have a designated
Delete key (requiring Fn+Backspace) or where the Delete key is not
conveniently located/sized, and there is no benefit in making the
distinction in that case anyhow.

Fixes: QTCREATORBUG-706
Fixes: QTCREATORBUG-13733
Change-Id: I06274a9810b82800ec6158a883c95d2a7ae2465e
Reviewed-by: David Schulz <david.schulz@qt.io>

src/libs/advanceddockingsystem/workspaceview.cpp

@@ -187,7 +187,7 @@ void WorkspaceView::showEvent(QShowEvent *event)
 
 void WorkspaceView::keyPressEvent(QKeyEvent *event)
 {
-    if (event->key() != Qt::Key_Delete) {
+    if (event->key() != Qt::Key_Delete && event->key() != Qt::Key_Backspace) {
         TreeView::keyPressEvent(event);
         return;
     }

src/plugins/bookmarks/bookmarkmanager.cpp

@@ -274,7 +274,7 @@ void BookmarkView::removeBookmark(const QModelIndex& index)
 
 void BookmarkView::keyPressEvent(QKeyEvent *event)
 {
-    if (event->key() == Qt::Key_Delete) {
+    if (event->key() == Qt::Key_Delete || event->key() == Qt::Key_Backspace) {
         removeBookmark(currentIndex());
         event->accept();
         return;

src/plugins/coreplugin/mainwindow.cpp

@@ -645,7 +645,10 @@ void MainWindow::registerDefaultActions()
                                            : Utils::Icons::ZOOMOUT_TOOLBAR.icon();
     tmpaction = new QAction(icon, tr("Zoom Out"), this);
     cmd = ActionManager::registerAction(tmpaction, Constants::ZOOM_OUT);
-    cmd->setDefaultKeySequence(QKeySequence(tr("Ctrl+-")));
+    if (useMacShortcuts)
+        cmd->setDefaultKeySequences({QKeySequence(tr("Ctrl+-")), QKeySequence(tr("Ctrl+Shift+-"))});
+    else
+        cmd->setDefaultKeySequence(QKeySequence(tr("Ctrl+-")));
     tmpaction->setEnabled(false);
 
     // Zoom Reset Action

src/plugins/debugger/breakhandler.cpp

@@ -1509,7 +1509,7 @@ bool BreakHandler::setData(const QModelIndex &idx, const QVariant &value, int ro
             return contextMenuEvent(ev);
 
         if (auto kev = ev.as<QKeyEvent>(QEvent::KeyPress)) {
-            if (kev->key() == Qt::Key_Delete) {
+            if (kev->key() == Qt::Key_Delete || kev->key() == Qt::Key_Backspace) {
                 QModelIndexList si = ev.currentOrSelectedRows();
                 const Breakpoints bps = findBreakpointsByIndex(si);
                 for (Breakpoint bp : bps) {
@@ -2547,7 +2547,7 @@ bool BreakpointManager::setData(const QModelIndex &idx, const QVariant &value, i
             return contextMenuEvent(ev);
 
         if (auto kev = ev.as<QKeyEvent>(QEvent::KeyPress)) {
-            if (kev->key() == Qt::Key_Delete) {
+            if (kev->key() == Qt::Key_Delete || kev->key() == Qt::Key_Backspace) {
                 QModelIndexList si = ev.currentOrSelectedRows();
                 const GlobalBreakpoints gbps = findBreakpointsByIndex(si);
                 for (GlobalBreakpoint gbp : gbps)

src/plugins/debugger/enginemanager.cpp

@@ -310,7 +310,7 @@ bool EngineItem::setData(int row, const QVariant &value, int role)
         }
 
         if (auto kev = ev.as<QKeyEvent>(QEvent::KeyPress)) {
-            if (kev->key() == Qt::Key_Delete && m_engine) {
+            if ((kev->key() == Qt::Key_Delete || kev->key() == Qt::Key_Backspace) && m_engine) {
                 m_engine->quitDebugger();
             } else if (kev->key() == Qt::Key_Return || kev->key() == Qt::Key_Enter) {
                 d->activateEngineByIndex(row);

src/plugins/debugger/watchhandler.cpp

@@ -1108,7 +1108,8 @@ bool WatchModel::setData(const QModelIndex &idx, const QVariant &value, int role
         }
 
         if (auto kev = ev.as<QKeyEvent>(QEvent::KeyPress)) {
-            if (item && kev->key() == Qt::Key_Delete && item->isWatcher()) {
+            if (item && (kev->key() == Qt::Key_Delete || kev->key() == Qt::Key_Backspace)
+                && item->isWatcher()) {
                 foreach (const QModelIndex &idx, ev.selectedRows())
                     removeWatchItem(itemForIndex(idx));
                 return true;

src/plugins/help/docsettingspage.cpp

@@ -282,6 +282,7 @@ bool DocSettingsPageWidget::eventFilter(QObject *object, QEvent *event)
     if (event->type() == QEvent::KeyPress) {
         auto ke = static_cast<const QKeyEvent*>(event);
         switch (ke->key()) {
+            case Qt::Key_Backspace:
             case Qt::Key_Delete:
                 removeDocumentation(currentSelection());
             break;

src/plugins/projectexplorer/projectexplorer.cpp

@@ -1362,7 +1362,7 @@ bool ProjectExplorerPlugin::initialize(const QStringList &arguments, QString *er
     dd->m_removeFileAction = new QAction(this);
     cmd = ActionManager::registerAction(dd->m_removeFileAction, Constants::REMOVEFILE,
                        projectTreeContext);
-    cmd->setDefaultKeySequence(QKeySequence::Delete);
+    cmd->setDefaultKeySequences({QKeySequence::Delete, QKeySequence::Backspace});
     mfileContextMenu->addAction(cmd, Constants::G_FILE_OTHER);
 
     // duplicate file action
@@ -1381,7 +1381,7 @@ bool ProjectExplorerPlugin::initialize(const QStringList &arguments, QString *er
     dd->m_deleteFileAction = new QAction(tr("Delete File..."), this);
     cmd = ActionManager::registerAction(dd->m_deleteFileAction, Constants::DELETEFILE,
                              projectTreeContext);
-    cmd->setDefaultKeySequence(QKeySequence::Delete);
+    cmd->setDefaultKeySequences({QKeySequence::Delete, QKeySequence::Backspace});
     mfileContextMenu->addAction(cmd, Constants::G_FILE_OTHER);
 
     // renamefile action

src/plugins/projectexplorer/removetaskhandler.cpp

@@ -42,7 +42,7 @@ QAction *RemoveTaskHandler::createAction(QObject *parent) const
 {
     QAction *removeAction = new QAction(tr("Remove", "Name of the action triggering the removetaskhandler"), parent);
     removeAction->setToolTip(tr("Remove task from the task list."));
-    removeAction->setShortcut(QKeySequence(QKeySequence::Delete));
+    removeAction->setShortcuts({QKeySequence::Delete, QKeySequence::Backspace});
     removeAction->setShortcutContext(Qt::WidgetWithChildrenShortcut);
     return removeAction;
 }

src/plugins/projectexplorer/sessionview.cpp

@@ -152,7 +152,7 @@ void SessionView::showEvent(QShowEvent *event)
 
 void SessionView::keyPressEvent(QKeyEvent *event)
 {
-    if (event->key() != Qt::Key_Delete) {
+    if (event->key() != Qt::Key_Delete && event->key() != Qt::Key_Backspace) {
         TreeView::keyPressEvent(event);
         return;
     }

src/plugins/qmakeprojectmanager/customwidgetwizard/classlist.cpp

@@ -147,6 +147,7 @@ void ClassList::removeCurrentClass()
 void ClassList::keyPressEvent(QKeyEvent *event)
 {
     switch (event->key()) {
+    case Qt::Key_Backspace:
     case Qt::Key_Delete:
         removeCurrentClass();
         break;

src/plugins/qmldesigner/components/connectioneditor/connectionviewwidget.cpp

@@ -58,7 +58,6 @@ ConnectionViewWidget::ConnectionViewWidget(QWidget *parent) :
     ui(new Ui::ConnectionViewWidget)
 {
     m_actionEditor = new QmlDesigner::ActionEditor(this);
-    m_deleteShortcut = new QShortcut(this);
     QObject::connect(m_actionEditor, &QmlDesigner::ActionEditor::accepted,
                      [&]() {
         if (m_actionEditor->hasModelIndex()) {
@@ -125,7 +124,6 @@ ConnectionViewWidget::~ConnectionViewWidget()
 {
     delete m_actionEditor;
     delete ui;
-    delete m_deleteShortcut;
 }
 
 void ConnectionViewWidget::setBindingModel(BindingModel *model)
@@ -215,9 +213,11 @@ QList<QToolButton *> ConnectionViewWidget::createToolBarWidgets()
     connect(buttons.constLast(), &QAbstractButton::clicked, this, &ConnectionViewWidget::removeButtonClicked);
     connect(this, &ConnectionViewWidget::setEnabledRemoveButton, buttons.constLast(), &QWidget::setEnabled);
 
-    m_deleteShortcut->setKey(Qt::Key_Delete);
-    m_deleteShortcut->setContext(Qt::WidgetWithChildrenShortcut);
-    connect(m_deleteShortcut, &QShortcut::activated, this, &ConnectionViewWidget::removeButtonClicked);
+    QAction *deleteShortcut = new QAction(this);
+    this->addAction(deleteShortcut);
+    deleteShortcut->setShortcuts({QKeySequence::Delete, QKeySequence::Backspace});
+    deleteShortcut->setShortcutContext(Qt::WidgetWithChildrenShortcut);
+    connect(deleteShortcut, &QAction::triggered, this, &ConnectionViewWidget::removeButtonClicked);
 
     return buttons;
 }

src/plugins/qmldesigner/components/connectioneditor/connectionviewwidget.h

@@ -102,7 +102,6 @@ private:
 private:
     Ui::ConnectionViewWidget *ui;
     QmlDesigner::ActionEditor *m_actionEditor;
-    QShortcut *m_deleteShortcut;
 };
 
 } // namespace Internal

src/plugins/qmldesigner/shortcutmanager.cpp

@@ -154,12 +154,7 @@ void ShortCutManager::registerActions(const Core::Context &qmlDesignerMainContex
     m_deleteAction.setIcon(QIcon::fromTheme(QLatin1String("edit-cut"), Utils::Icons::EDIT_CLEAR_TOOLBAR.icon()));
 
     command = Core::ActionManager::registerAction(&m_deleteAction, QmlDesigner::Constants::C_DELETE, qmlDesignerMainContext);
-    if (Utils::HostOsInfo::isMacHost())
-        command->setDefaultKeySequence(QKeySequence::Backspace);
-    else
-        command->setDefaultKeySequence(QKeySequence::Delete);
-
-    Utils::HostOsInfo::isMacHost() ;
+    command->setDefaultKeySequences({QKeySequence::Delete, QKeySequence::Backspace});
 
     command->setAttribute(Core::Command::CA_Hide); // don't show delete in other modes
     if (!Utils::HostOsInfo::isMacHost())

src/plugins/resourceeditor/qrceditor/resourceview.cpp

@@ -175,7 +175,7 @@ void ResourceView::removeFiles(int prefixIndex, int firstFileIndex, int lastFile
 
 void ResourceView::keyPressEvent(QKeyEvent *e)
 {
-    if (e->key() == Qt::Key_Delete)
+    if (e->key() == Qt::Key_Delete || e->key() == Qt::Key_Backspace)
         emit removeItem();
     else
         Utils::TreeView::keyPressEvent(e);

src/plugins/scxmleditor/common/structure.cpp

@@ -239,7 +239,7 @@ void Structure::childAdded(const QModelIndex &childIndex)
 
 void Structure::keyPressEvent(QKeyEvent *e)
 {
-    if (e->key() == Qt::Key_Delete) {
+    if (e->key() == Qt::Key_Delete || e->key() == Qt::Key_Backspace) {
         QModelIndex ind = m_proxyModel->mapToSource(m_structureView->currentIndex());
         auto tag = static_cast<ScxmlTag*>(ind.internalPointer());
         if (tag && m_currentDocument) {

src/plugins/scxmleditor/plugin_interface/graphicsscene.cpp

@@ -679,7 +679,7 @@ void GraphicsScene::keyPressEvent(QKeyEvent *event)
 {
     QGraphicsItem *focusItem = this->focusItem();
     if (!focusItem || focusItem->type() != TextType) {
-        if (event->key() == Qt::Key_Delete)
+        if (event->key() == Qt::Key_Delete || event->key() == Qt::Key_Backspace)
             removeSelectedItems();
     }
     QGraphicsScene::keyPressEvent(event);

src/plugins/scxmleditor/plugin_interface/transitionitem.cpp

@@ -457,7 +457,7 @@ void TransitionItem::selectedMenuAction(const QAction *action)
 
 void TransitionItem::keyPressEvent(QKeyEvent *event)
 {
-    if (event->key() == Qt::Key_Delete) {
+    if (event->key() == Qt::Key_Delete || event->key() == Qt::Key_Backspace) {
         bool bFound = false;
         if (m_cornerGrabbers.count() > 2) {
             for (int i = m_cornerGrabbers.count() - 1; i >= 1; i--) {

src/plugins/valgrind/memcheckerrorview.cpp

@@ -61,7 +61,7 @@ MemcheckErrorView::MemcheckErrorView(QWidget *parent)
             {":/valgrind/images/suppressoverlay.png", Utils::Theme::IconsErrorColor}},
             Utils::Icon::Tint | Utils::Icon::PunchEdges).icon();
     m_suppressAction->setIcon(icon);
-    m_suppressAction->setShortcut(QKeySequence(Qt::Key_Delete));
+    m_suppressAction->setShortcuts({QKeySequence::Delete, QKeySequence::Backspace});
     m_suppressAction->setShortcutContext(Qt::WidgetWithChildrenShortcut);
     connect(m_suppressAction, &QAction::triggered, this, &MemcheckErrorView::suppressError);
     addAction(m_suppressAction);

src/shared/help/bookmarkmanager.cpp

@@ -273,6 +273,7 @@ bool BookmarkDialog::eventFilter(QObject *object, QEvent *e)
                 }
             }   break;
 
+            case Qt::Key_Backspace:
             case Qt::Key_Delete: {
                 bookmarkManager->removeBookmarkItem(ui.treeView,
                     proxyModel->mapToSource(index));
@@ -489,7 +490,7 @@ bool BookmarkWidget::eventFilter(QObject *object, QEvent *e)
                         treeView->edit(index);
                         item->setEditable(false);
                     }
-                } else if (ke->key() == Qt::Key_Delete) {
+                } else if (ke->key() == Qt::Key_Delete || ke->key() == Qt::Key_Backspace) {
                     bookmarkManager->removeBookmarkItem(treeView, src);
                 }
             }