qtmenu.cpp 14.90 KiB
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#include "qtmenu_p.h"
#include "qtmenuitemcontainer_p.h"
#include "qtaction_p.h"
#include "qtmenupopupwindow_p.h"
#include <qdebug.h>
#include <qabstractitemmodel.h>
#include <qcursor.h>
#include <private/qguiapplication_p.h>
#include <QtGui/qpa/qplatformtheme.h>
#include <QtGui/qpa/qplatformmenu.h>
#include <qquickitem.h>
QT_BEGIN_NAMESPACE
/*!
  \class QtMenu
  \internal
/*!
  \qmltype MenuPrivate
  \instantiates QtMenu
  \internal
  \inqmlmodule QtQuick.Controls 1.0
/*!
    \qmlproperty readonly list Menu::items
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\default The list of items in the menu. \sa MenuItem, MenuSeparator */ /*! \qmlproperty bool Menu::visible Whether the menu should be visible. This is only enabled when the menu is used as a submenu. */ /*! \qmlproperty string Menu::title Title for the menu as a submenu or in a menubar. Mnemonics are supported by prefixing the shortcut letter with \&. For instance, \c "\&File" will bind the \c Alt-F shortcut to the \c "File" menu. Note that not all platforms support mnemonics. */ /*! \qmlproperty bool Menu::enabled Whether the menu is enabled, and responsive to user interaction as a submenu. */ /*! \qmlproperty url Menu::iconSource Sets the icon file or resource url for the menu icon as a submenu. \sa iconName */ /*! \qmlproperty string Menu::iconName Sets the icon name for the menu icon. This will pick the icon with the given name from the current theme. Only works as a submenu. \sa iconSource */ /*! \qmlmethod void Menu::popup() Opens this menu under the mouse cursor. It can block on some platforms, so test it accordingly. */ /*! \qmlproperty var Menu::model */ QtMenu::QtMenu(QObject *parent) : QtMenuText(parent), m_itemsCount(0), m_selectedIndex(-1), m_parentWindow(0), m_minimumWidth(0), m_popupWindow(0), m_menuContentItem(0), m_popupVisible(false), m_containersCount(0) { connect(this, SIGNAL(__textChanged()), this, SIGNAL(titleChanged()));
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m_platformMenu = QGuiApplicationPrivate::platformTheme()->createPlatformMenu(); if (m_platformMenu) { connect(m_platformMenu, SIGNAL(aboutToHide()), this, SLOT(__closeMenu())); if (platformItem()) platformItem()->setMenu(m_platformMenu); } } QtMenu::~QtMenu() { delete m_platformMenu; m_platformMenu = 0; } void QtMenu::updateText() { if (m_platformMenu) m_platformMenu->setText(this->text()); QtMenuText::updateText(); } void QtMenu::setMinimumWidth(int w) { if (w == m_minimumWidth) return; m_minimumWidth = w; if (m_platformMenu) m_platformMenu->setMinimumWidth(w); } void QtMenu::setFont(const QFont &arg) { if (m_platformMenu) m_platformMenu->setFont(arg); } void QtMenu::setSelectedIndex(int index) { if (m_selectedIndex == index) return; m_selectedIndex = index; emit __selectedIndexChanged(); } void QtMenu::updateSelectedIndex() { if (QtMenuItem *menuItem = qobject_cast<QtMenuItem*>(sender())) { int index = indexOfMenuItem(menuItem); setSelectedIndex(index); } } QtMenuItems QtMenu::menuItems() { return QtMenuItems(this, 0, &QtMenu::append_menuItems, &QtMenu::count_menuItems, &QtMenu::at_menuItems, 0); } QQuickWindow *QtMenu::findParentWindow() { if (!m_parentWindow) { QQuickItem *parentAsItem = qobject_cast<QQuickItem *>(parent()); m_parentWindow = visualItem() ? visualItem()->window() : // Menu as menu item case parentAsItem ? parentAsItem->window() : 0; //Menu as context menu/popup case } return m_parentWindow; }
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void QtMenu::popup() { QPoint mousePos = QCursor::pos(); if (QQuickWindow *parentWindow = findParentWindow()) mousePos = parentWindow->mapFromGlobal(mousePos); __popup(mousePos.x(), mousePos.y()); } void QtMenu::__popup(qreal x, qreal y, int atItemIndex) { if (popupVisible()) __closeMenu(); setPopupVisible(true); QtMenuBase *atItem = menuItemAtIndex(atItemIndex); QQuickWindow *parentWindow = findParentWindow(); if (m_platformMenu) { QPointF screenPosition(x, y); if (visualItem()) screenPosition = visualItem()->mapToScene(screenPosition); m_platformMenu->showPopup(parentWindow, screenPosition.toPoint(), atItem ? atItem->platformItem() : 0); } else { m_popupWindow = new QtMenuPopupWindow(); m_popupWindow->setParentWindow(parentWindow); m_popupWindow->setMenuContentItem(m_menuContentItem); connect(m_popupWindow, SIGNAL(visibleChanged(bool)), this, SLOT(windowVisibleChanged(bool))); if (parentWindow) { if (visualItem()) { QPointF pos = visualItem()->mapToItem(parentWindow->contentItem(), QPointF(x, y)); x = pos.x(); y = pos.y(); } x += parentWindow->geometry().left(); y += parentWindow->geometry().top(); } QQuickItem *visualItem = atItem ? atItem->visualItem() : 0; if (visualItem) { QPointF pos = visualItem->position(); x -= pos.x(); y -= pos.y(); m_popupWindow->setItemAt(visualItem); } qreal initialWidth = qMax(qreal(1), m_menuContentItem->width()); qreal initialHeight = qMax(qreal(1), m_menuContentItem->height()); if (!qobject_cast<QtMenuPopupWindow *>(parentWindow)) // No need for parent menu windows if (QQuickItem *mg = parentWindow->mouseGrabberItem()) mg->ungrabMouse(); m_popupWindow->setGeometry(x, y, initialWidth, initialHeight); m_popupWindow->show(); m_popupWindow->setMouseGrabEnabled(true); // Needs to be done after calling show() m_popupWindow->setKeyboardGrabEnabled(true); } } void QtMenu::setMenuContentItem(QQuickItem *item) { if (m_menuContentItem != item) m_menuContentItem = item; }
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void QtMenu::setPopupVisible(bool v) { if (m_popupVisible != v) { m_popupVisible = v; emit popupVisibleChanged(); } } void QtMenu::__closeMenu() { setPopupVisible(false); if (m_popupWindow) m_popupWindow->setVisible(false); m_parentWindow = 0; emit __menuClosed(); } void QtMenu::__dismissMenu() { QtMenuPopupWindow *topMenuWindow = m_popupWindow; while (topMenuWindow) { QtMenuPopupWindow *pw = qobject_cast<QtMenuPopupWindow *>(topMenuWindow->transientParent()); if (!pw) topMenuWindow->dismissMenu(); topMenuWindow = pw; } } void QtMenu::windowVisibleChanged(bool v) { if (!v) { if (qobject_cast<QtMenuPopupWindow *>(m_popupWindow->transientParent())) { m_popupWindow->transientParent()->setMouseGrabEnabled(true); m_popupWindow->transientParent()->setKeyboardGrabEnabled(true); } m_popupWindow->deleteLater(); m_popupWindow = 0; __closeMenu(); } } void QtMenu::itemIndexToListIndex(int itemIndex, int *listIndex, int *containerIndex) const { *listIndex = -1; QtMenuItemContainer *container = 0; while (itemIndex >= 0 && ++*listIndex < m_menuItems.count()) if ((container = qobject_cast<QtMenuItemContainer *>(m_menuItems[*listIndex]))) itemIndex -= container->items().count(); else --itemIndex; if (container) *containerIndex = container->items().count() + itemIndex; else *containerIndex = -1; } int QtMenu::itemIndexForListIndex(int listIndex) const { int index = 0; int i = 0; while (i < listIndex && i < m_menuItems.count()) if (QtMenuItemContainer *container = qobject_cast<QtMenuItemContainer *>(m_menuItems[i++])) index += container->items().count(); else ++index; return index; }
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QtMenuBase *QtMenu::nextMenuItem(QtMenu::MenuItemIterator *it) const { if (it->containerIndex != -1) { QtMenuItemContainer *container = qobject_cast<QtMenuItemContainer *>(m_menuItems[it->index]); if (++it->containerIndex < container->items().count()) return container->items()[it->containerIndex]; } if (++it->index < m_menuItems.count()) { if (QtMenuItemContainer *container = qobject_cast<QtMenuItemContainer *>(m_menuItems[it->index])) { it->containerIndex = 0; return container->items()[0]; } else { it->containerIndex = -1; return m_menuItems[it->index]; } } return 0; } QtMenuBase *QtMenu::menuItemAtIndex(int index) const { if (0 <= index && index < m_itemsCount) { if (!m_containersCount) { return m_menuItems[index]; } else if (m_containersCount == 1 && m_menuItems.count() == 1) { QtMenuItemContainer *container = qobject_cast<QtMenuItemContainer *>(m_menuItems[0]); return container->items()[index]; } else { int containerIndex; int i; itemIndexToListIndex(index, &i, &containerIndex); if (containerIndex != -1) { QtMenuItemContainer *container = qobject_cast<QtMenuItemContainer *>(m_menuItems[i]); return container->items()[containerIndex]; } else { return m_menuItems[i]; } } } return 0; } bool QtMenu::contains(QtMenuBase *item) { if (item->container()) return item->container()->items().contains(item); return m_menuItems.contains(item); } int QtMenu::indexOfMenuItem(QtMenuBase *item) const { if (!item) return -1; if (item->container()) { int containerIndex = m_menuItems.indexOf(item->container()); if (containerIndex == -1) return -1; int index = item->container()->items().indexOf(item); return index == -1 ? -1 : itemIndexForListIndex(containerIndex) + index; } else { int index = m_menuItems.indexOf(item); return index == -1 ? -1 : itemIndexForListIndex(index); } } QtMenuItem *QtMenu::addItem(QString title)
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{ QtMenuItem *item = new QtMenuItem(this); item->setText(title); insertItem(m_itemsCount, item); return item; } void QtMenu::insertItem(int index, QtMenuBase *menuItem) { if (!menuItem) return; int itemIndex; if (m_containersCount) { QtMenuItemContainer *container = menuItem->parent() != this ? m_containers[menuItem->parent()] : 0; if (container) { container->insertItem(index, menuItem); itemIndex = itemIndexForListIndex(m_menuItems.indexOf(container)) + index; } else { itemIndex = itemIndexForListIndex(index); m_menuItems.insert(itemIndex, menuItem); } } else { itemIndex = index; m_menuItems.insert(index, menuItem); } setupMenuItem(menuItem, itemIndex); emit itemsChanged(); } void QtMenu::removeItem(QtMenuBase *menuItem) { if (!menuItem) return; menuItem->setParentMenu(0); QtMenuItemContainer *container = menuItem->parent() != this ? m_containers[menuItem->parent()] : 0; if (container) container->removeItem(menuItem); else m_menuItems.removeOne(menuItem); --m_itemsCount; emit itemsChanged(); } void QtMenu::clear() { m_containers.clear(); m_containersCount = 0; while (!m_menuItems.empty()) delete m_menuItems.takeFirst(); m_itemsCount = 0; } void QtMenu::setupMenuItem(QtMenuBase *item, int platformIndex) { item->setParentMenu(this); if (m_platformMenu) { QPlatformMenuItem *before = 0; if (platformIndex != -1) before = m_platformMenu->menuItemAt(platformIndex); m_platformMenu->insertMenuItem(item->platformItem(), before); } ++m_itemsCount; } void QtMenu::append_menuItems(QtMenuItems *list, QObject *o) {
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if (QtMenu *menu = qobject_cast<QtMenu *>(list->object)) { Q_ASSERT(o->parent() == menu); if (QtMenuBase *menuItem = qobject_cast<QtMenuBase *>(o)) { menu->m_menuItems.append(menuItem); menu->setupMenuItem(menuItem); } else { QtMenuItemContainer *menuItemContainer = new QtMenuItemContainer(menu); menu->m_menuItems.append(menuItemContainer); menu->m_containers.insert(o, menuItemContainer); menuItemContainer->setParentMenu(menu); ++menu->m_containersCount; foreach (QObject *child, o->children()) { if (QtMenuBase *item = qobject_cast<QtMenuBase *>(child)) { menuItemContainer->insertItem(-1, item); menu->setupMenuItem(item); } } } } } int QtMenu::count_menuItems(QtMenuItems *list) { if (QtMenu *menu = qobject_cast<QtMenu *>(list->object)) return menu->m_itemsCount; return 0; } QObject *QtMenu::at_menuItems(QtMenuItems *list, int index) { if (QtMenu *menu = qobject_cast<QtMenu *>(list->object)) return menu->menuItemAtIndex(index); return 0; } QT_END_NAMESPACE