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Diffstat (limited to 'src/plugins/platforms/ios/qiosmenu.mm')
| -rw-r--r-- | src/plugins/platforms/ios/qiosmenu.mm | 528 |
1 files changed, 528 insertions, 0 deletions
diff --git a/src/plugins/platforms/ios/qiosmenu.mm b/src/plugins/platforms/ios/qiosmenu.mm new file mode 100644 index 0000000000..c247c16514 --- /dev/null +++ b/src/plugins/platforms/ios/qiosmenu.mm @@ -0,0 +1,528 @@ +/**************************************************************************** +** +** Copyright (C) 2014 Digia Plc and/or its subsidiary(-ies). +** Contact: http://www.qt-project.org/legal +** +** This file is part of the plugins of the Qt Toolkit. +** +** $QT_BEGIN_LICENSE:LGPL$ +** Commercial License Usage +** Licensees holding valid commercial Qt licenses may use this file in +** accordance with the commercial license agreement provided with the +** Software or, alternatively, in accordance with the terms contained in +** a written agreement between you and Digia. For licensing terms and +** conditions see http://qt.digia.com/licensing. For further information +** use the contact form at http://qt.digia.com/contact-us. +** +** 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, Digia gives you certain additional +** rights. These rights are described in the Digia Qt LGPL Exception +** version 1.1, included in the file LGPL_EXCEPTION.txt in this package. +** +** GNU General Public License Usage +** Alternatively, this file may be used under the terms of the GNU +** General Public License version 3.0 as published by the Free Software +** Foundation and appearing in the file LICENSE.GPL included in the +** packaging of this file. Please review the following information to +** ensure the GNU General Public License version 3.0 requirements will be +** met: http://www.gnu.org/copyleft/gpl.html. +** +** +** $QT_END_LICENSE$ +** +****************************************************************************/ + +#include <qglobal.h> +#include <qguiapplication.h> + +#include "qiosglobal.h" +#include "qiosmenu.h" +#include "qioswindow.h" +#include "qiosinputcontext.h" +#include "qiosintegration.h" +#include "qiostextresponder.h" + +// m_currentMenu points to the currently visible menu. +// Only one menu will be visible at a time, and if a second menu +// is shown on top of a first, the first one will be told to hide. +QIOSMenu *QIOSMenu::m_currentMenu = 0; + +// ------------------------------------------------------------------------- + +static NSString *const kSelectorPrefix = @"_qtMenuItem_"; + +@interface QUIMenuController : UIResponder { + QIOSMenuItemList m_visibleMenuItems; +} +@end + +@implementation QUIMenuController + +- (id)initWithVisibleMenuItems:(const QIOSMenuItemList &)visibleMenuItems +{ + if (self = [super init]) { + m_visibleMenuItems = visibleMenuItems; + NSMutableArray *menuItemArray = [NSMutableArray arrayWithCapacity:m_visibleMenuItems.size()]; + // Create an array of UIMenuItems, one for each visible QIOSMenuItem. Each + // UIMenuItem needs a callback assigned, so we assign one of the placeholder methods + // added to UIWindow (QIOSMenuActionTargets) below. Each method knows its own index, which + // corresponds to the index of the corresponding QIOSMenuItem in m_visibleMenuItems. When + // triggered, menuItemActionCallback will end up being called. + for (int i = 0; i < m_visibleMenuItems.count(); ++i) { + QIOSMenuItem *item = m_visibleMenuItems.at(i); + SEL sel = NSSelectorFromString([NSString stringWithFormat:@"%@%i:", kSelectorPrefix, i]); + [menuItemArray addObject:[[[UIMenuItem alloc] initWithTitle:item->m_text.toNSString() action:sel] autorelease]]; + } + [UIMenuController sharedMenuController].menuItems = menuItemArray; + } + + return self; +} + +- (id)targetForAction:(SEL)action withSender:(id)sender +{ + BOOL containsPrefix = ([NSStringFromSelector(action) rangeOfString:kSelectorPrefix].location != NSNotFound); + return (containsPrefix && [sender isKindOfClass:[UIMenuController class]]) ? self : 0; +} + +- (NSMethodSignature *)methodSignatureForSelector:(SEL)selector +{ + Q_UNUSED(selector); + // Just return a dummy signature that NSObject can create an NSInvocation from. + // We end up only checking selector in forwardInvocation anyway. + return [super methodSignatureForSelector:@selector(methodSignatureForSelector:)]; +} + +- (void)forwardInvocation:(NSInvocation *)invocation +{ + // Since none of the menu item selector methods actually exist, this function + // will end up being called as a final resort. We can then handle the action. + NSString *selector = NSStringFromSelector(invocation.selector); + NSRange range = NSMakeRange(kSelectorPrefix.length, selector.length - kSelectorPrefix.length - 1); + NSInteger selectedIndex = [[selector substringWithRange:range] integerValue]; + QIOSMenu::currentMenu()->handleItemSelected(m_visibleMenuItems.at(selectedIndex)); +} + +@end + +// ------------------------------------------------------------------------- + +@interface QUIPickerView : UIPickerView <UIPickerViewDelegate, UIPickerViewDataSource> { + QIOSMenuItemList m_visibleMenuItems; + QPointer<QObject> m_focusObjectWithPickerView; + NSInteger m_selectedRow; +} + +@property(retain) UIToolbar *toolbar; + +@end + +@implementation QUIPickerView + +- (id)initWithVisibleMenuItems:(const QIOSMenuItemList &)visibleMenuItems selectItem:(const QIOSMenuItem *)selectItem +{ + if (self = [super init]) { + self.autoresizingMask = UIViewAutoresizingFlexibleWidth; + m_visibleMenuItems = visibleMenuItems; + m_selectedRow = visibleMenuItems.indexOf(const_cast<QIOSMenuItem *>(selectItem)); + if (m_selectedRow == -1) + m_selectedRow = 0; + + self.toolbar = [[[UIToolbar alloc] initWithFrame:CGRectMake(0, 0, 100, 44)] autorelease]; + self.toolbar.autoresizingMask = UIViewAutoresizingFlexibleWidth | UIViewAutoresizingFlexibleHeight; + + UIBarButtonItem *doneButton = [[[UIBarButtonItem alloc] + initWithBarButtonSystemItem:UIBarButtonSystemItemDone + target:self action:@selector(closeMenu)] autorelease]; + UIBarButtonItem *spaceButton = [[[UIBarButtonItem alloc] + initWithBarButtonSystemItem:UIBarButtonSystemItemFlexibleSpace + target:self action:@selector(closeMenu)] autorelease]; + UIBarButtonItem *cancelButton = [[[UIBarButtonItem alloc] + initWithBarButtonSystemItem:UIBarButtonSystemItemCancel + target:self action:@selector(cancelMenu)] autorelease]; + [self.toolbar setItems:[NSArray arrayWithObjects:doneButton, spaceButton, cancelButton, nil]]; + + [self setDelegate:self]; + [self setDataSource:self]; + [self selectRow:m_selectedRow inComponent:0 animated:false]; + } + + return self; +} + +-(void)dealloc +{ + self.toolbar = 0; + [super dealloc]; +} + +- (NSString *)pickerView:(UIPickerView *)pickerView titleForRow:(NSInteger)row forComponent:(NSInteger)component +{ + Q_UNUSED(pickerView); + Q_UNUSED(component); + return m_visibleMenuItems.at(row)->m_text.toNSString(); +} + +- (NSInteger)numberOfComponentsInPickerView:(UIPickerView *)pickerView +{ + Q_UNUSED(pickerView); + return 1; +} + +- (NSInteger)pickerView:(UIPickerView *)pickerView numberOfRowsInComponent:(NSInteger)component +{ + Q_UNUSED(pickerView); + Q_UNUSED(component); + return m_visibleMenuItems.length(); +} + +- (void)pickerView:(UIPickerView *)pickerView didSelectRow:(NSInteger)row inComponent:(NSInteger)component +{ + Q_UNUSED(pickerView); + Q_UNUSED(component); + m_selectedRow = row; +} + +- (void)closeMenu +{ + if (!m_visibleMenuItems.isEmpty()) + QIOSMenu::currentMenu()->handleItemSelected(m_visibleMenuItems.at(m_selectedRow)); + else + QIOSMenu::currentMenu()->dismiss(); +} + +- (void)cancelMenu +{ + QIOSMenu::currentMenu()->dismiss(); +} + +@end + +// ------------------------------------------------------------------------- + +QIOSMenuItem::QIOSMenuItem() + : QPlatformMenuItem() + , m_tag(0) + , m_visible(true) + , m_text(QString()) + , m_role(MenuRole(0)) + , m_enabled(true) + , m_separator(false) + , m_menu(0) +{ +} + +void QIOSMenuItem::setTag(quintptr tag) +{ + m_tag = tag; +} + +quintptr QIOSMenuItem::tag() const +{ + return m_tag; +} + +void QIOSMenuItem::setText(const QString &text) +{ + m_text = removeMnemonics(text); +} + +void QIOSMenuItem::setMenu(QPlatformMenu *menu) +{ + m_menu = static_cast<QIOSMenu *>(menu); +} + +void QIOSMenuItem::setVisible(bool isVisible) +{ + m_visible = isVisible; +} + +void QIOSMenuItem::setIsSeparator(bool isSeparator) +{ + m_separator = isSeparator; +} + +void QIOSMenuItem::setRole(QPlatformMenuItem::MenuRole role) +{ + m_role = role; +} + +void QIOSMenuItem::setEnabled(bool enabled) +{ + m_enabled = enabled; +} + +QString QIOSMenuItem::removeMnemonics(const QString &original) +{ + // Copied from qcocoahelpers + QString returnText(original.size(), 0); + int finalDest = 0; + int currPos = 0; + int l = original.length(); + while (l) { + if (original.at(currPos) == QLatin1Char('&') + && (l == 1 || original.at(currPos + 1) != QLatin1Char('&'))) { + ++currPos; + --l; + if (l == 0) + break; + } else if (original.at(currPos) == QLatin1Char('(') && l >= 4 && + original.at(currPos + 1) == QLatin1Char('&') && + original.at(currPos + 2) != QLatin1Char('&') && + original.at(currPos + 3) == QLatin1Char(')')) { + /* remove mnemonics its format is "\s*(&X)" */ + int n = 0; + while (finalDest > n && returnText.at(finalDest - n - 1).isSpace()) + ++n; + finalDest -= n; + currPos += 4; + l -= 4; + continue; + } + returnText[finalDest] = original.at(currPos); + ++currPos; + ++finalDest; + --l; + } + returnText.truncate(finalDest); + return returnText; +} + +QIOSMenu::QIOSMenu() + : QPlatformMenu() + , m_tag(0) + , m_enabled(true) + , m_visible(true) + , m_text(QString()) + , m_menuType(DefaultMenu) + , m_effectiveMenuType(DefaultMenu) + , m_parentWindow(0) + , m_targetItem(0) + , m_menuController(0) + , m_pickerView(0) +{ +} + +QIOSMenu::~QIOSMenu() +{ + dismiss(); +} + +void QIOSMenu::insertMenuItem(QPlatformMenuItem *menuItem, QPlatformMenuItem *before) +{ + if (!before) { + m_menuItems.append(static_cast<QIOSMenuItem *>(menuItem)); + } else { + int index = m_menuItems.indexOf(static_cast<QIOSMenuItem *>(before)) + 1; + m_menuItems.insert(index, static_cast<QIOSMenuItem *>(menuItem)); + } +} + +void QIOSMenu::removeMenuItem(QPlatformMenuItem *menuItem) +{ + m_menuItems.removeOne(static_cast<QIOSMenuItem *>(menuItem)); +} + +void QIOSMenu::setTag(quintptr tag) +{ + m_tag = tag; +} + +quintptr QIOSMenu::tag() const +{ + return m_tag; +} + +void QIOSMenu::setText(const QString &text) +{ + m_text = text; +} + +void QIOSMenu::setEnabled(bool enabled) +{ + m_enabled = enabled; +} + +void QIOSMenu::setVisible(bool visible) +{ + m_visible = visible; +} + +void QIOSMenu::setMenuType(QPlatformMenu::MenuType type) +{ + m_menuType = type; +} + +void QIOSMenu::handleItemSelected(QIOSMenuItem *menuItem) +{ + emit menuItem->activated(); + dismiss(); + + if (QIOSMenu *menu = menuItem->m_menu) { + menu->setMenuType(m_effectiveMenuType); + menu->showPopup(m_parentWindow, m_targetRect, 0); + } +} + +void QIOSMenu::showPopup(const QWindow *parentWindow, const QRect &targetRect, const QPlatformMenuItem *item) +{ + if (m_currentMenu == this || !m_visible || !m_enabled || !parentWindow) + return; + + emit aboutToShow(); + + m_parentWindow = const_cast<QWindow *>(parentWindow); + m_targetRect = targetRect; + m_targetItem = static_cast<const QIOSMenuItem *>(item); + + if (!m_parentWindow->isActive()) + m_parentWindow->requestActivate(); + + if (m_currentMenu && m_currentMenu != this) + m_currentMenu->dismiss(); + + m_currentMenu = this; + m_effectiveMenuType = m_menuType; + connect(qGuiApp, &QGuiApplication::focusObjectChanged, this, &QIOSMenu::dismiss); + + switch (m_effectiveMenuType) { + case EditMenu: + toggleShowUsingUIMenuController(true); + break; + default: + toggleShowUsingUIPickerView(true); + break; + } +} + +void QIOSMenu::dismiss() +{ + if (m_currentMenu != this) + return; + + emit aboutToHide(); + + disconnect(qGuiApp, &QGuiApplication::focusObjectChanged, this, &QIOSMenu::dismiss); + + switch (m_effectiveMenuType) { + case EditMenu: + toggleShowUsingUIMenuController(false); + break; + default: + toggleShowUsingUIPickerView(false); + break; + } + + m_currentMenu = 0; +} + +void QIOSMenu::toggleShowUsingUIMenuController(bool show) +{ + if (show) { + Q_ASSERT(!m_menuController); + m_menuController = [[QUIMenuController alloc] initWithVisibleMenuItems:visibleMenuItems()]; + repositionMenu(); + connect(qGuiApp->inputMethod(), &QInputMethod::keyboardRectangleChanged, this, &QIOSMenu::repositionMenu); + } else { + disconnect(qGuiApp->inputMethod(), &QInputMethod::keyboardRectangleChanged, this, &QIOSMenu::repositionMenu); + + Q_ASSERT(m_menuController); + [[UIMenuController sharedMenuController] setMenuVisible:NO animated:YES]; + [m_menuController release]; + m_menuController = 0; + } +} + +void QIOSMenu::toggleShowUsingUIPickerView(bool show) +{ + static QObject *focusObjectWithPickerView = 0; + + if (show) { + Q_ASSERT(!m_pickerView); + m_pickerView = [[QUIPickerView alloc] initWithVisibleMenuItems:visibleMenuItems() selectItem:m_targetItem]; + + Q_ASSERT(!focusObjectWithPickerView); + focusObjectWithPickerView = qApp->focusWindow()->focusObject(); + focusObjectWithPickerView->installEventFilter(this); + qApp->inputMethod()->update(Qt::ImPlatformData); + } else { + Q_ASSERT(focusObjectWithPickerView); + focusObjectWithPickerView->removeEventFilter(this); + qApp->inputMethod()->update(Qt::ImPlatformData); + focusObjectWithPickerView = 0; + + Q_ASSERT(m_pickerView); + [m_pickerView release]; + m_pickerView = 0; + } +} + +bool QIOSMenu::eventFilter(QObject *obj, QEvent *event) +{ + if (event->type() == QEvent::InputMethodQuery) { + QInputMethodQueryEvent *queryEvent = static_cast<QInputMethodQueryEvent *>(event); + if (queryEvent->queries() & Qt::ImPlatformData) { + // Let object fill inn default query results + obj->event(queryEvent); + + QVariantMap imPlatformData = queryEvent->value(Qt::ImPlatformData).toMap(); + imPlatformData.insert(kImePlatformDataInputView, QVariant::fromValue(static_cast<void *>(m_pickerView))); + imPlatformData.insert(kImePlatformDataInputAccessoryView, QVariant::fromValue(static_cast<void *>(m_pickerView.toolbar))); + queryEvent->setValue(Qt::ImPlatformData, imPlatformData); + + return true; + } + } + + return QObject::eventFilter(obj, event); +} + +QIOSMenuItemList QIOSMenu::visibleMenuItems() const +{ + QIOSMenuItemList visibleMenuItems = m_menuItems; + + for (int i = visibleMenuItems.count() - 1; i >= 0; --i) { + QIOSMenuItem *item = visibleMenuItems.at(i); + if (!item->m_enabled || !item->m_visible || item->m_separator) + visibleMenuItems.removeAt(i); + } + + return visibleMenuItems; +} + +void QIOSMenu::repositionMenu() +{ + switch (m_effectiveMenuType) { + case EditMenu: { + UIView *view = reinterpret_cast<UIView *>(m_parentWindow->winId()); + [[UIMenuController sharedMenuController] setTargetRect:toCGRect(m_targetRect) inView:view]; + [[UIMenuController sharedMenuController] setMenuVisible:YES animated:YES]; + break; } + default: + break; + } +} + +QPlatformMenuItem *QIOSMenu::menuItemAt(int position) const +{ + if (position < 0 || position >= m_menuItems.size()) + return 0; + return m_menuItems.at(position); +} + +QPlatformMenuItem *QIOSMenu::menuItemForTag(quintptr tag) const +{ + for (int i = 0; i < m_menuItems.size(); ++i) { + QPlatformMenuItem *item = m_menuItems.at(i); + if (item->tag() == tag) + return item; + } + return 0; +} |