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Diffstat (limited to 'src/gui/inputmethod/qinputcontext.cpp')
| -rw-r--r-- | src/gui/inputmethod/qinputcontext.cpp | 500 |
1 files changed, 0 insertions, 500 deletions
diff --git a/src/gui/inputmethod/qinputcontext.cpp b/src/gui/inputmethod/qinputcontext.cpp deleted file mode 100644 index e461df59af..0000000000 --- a/src/gui/inputmethod/qinputcontext.cpp +++ /dev/null @@ -1,500 +0,0 @@ -/**************************************************************************** -** -** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies). -** All rights reserved. -** Contact: Nokia Corporation (qt-info@nokia.com) -** -** This file is part of the QtGui module of the Qt Toolkit. -** -** $QT_BEGIN_LICENSE:LGPL$ -** GNU Lesser General Public License Usage -** 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, Nokia gives you certain additional -** rights. These rights are described in the Nokia 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. -** -** Other Usage -** Alternatively, this file may be used in accordance with the terms and -** conditions contained in a signed written agreement between you and Nokia. -** -** -** -** -** -** $QT_END_LICENSE$ -** -****************************************************************************/ - -/**************************************************************************** -** -** Implementation of QInputContext class -** -** Copyright (C) 2003-2004 immodule for Qt Project. All rights reserved. -** -** This file is written to contribute to Nokia Corporation and/or its subsidiary(-ies) under their own -** license. You may use this file under your Qt license. Following -** description is copied from their original file headers. Contact -** immodule-qt@freedesktop.org if any conditions of this licensing are -** not clear to you. -** -****************************************************************************/ - -//#define QT_NO_IM_PREEDIT_RELOCATION - -#include "qinputcontext.h" -#include "qinputcontext_p.h" - -#ifndef QT_NO_IM - -#include "qplatformdefs.h" - -#include "qapplication.h" -#include "qmenu.h" -#include "qtextformat.h" -#include "qpalette.h" - -#include <stdlib.h> -#include <limits.h> - -QT_BEGIN_NAMESPACE - -/*! - \class QInputContext - \brief The QInputContext class abstracts the input method dependent data and composing state. - - \ingroup i18n - - An input method is responsible for inputting complex text that cannot - be inputted via simple keymap. It converts a sequence of input - events (typically key events) into a text string through the input - method specific converting process. The class of the processes are - widely ranging from simple finite state machine to complex text - translator that pools a whole paragraph of a text with text - editing capability to perform grammar and semantic analysis. - - To abstract such different input method specific intermediate - information, Qt offers the QInputContext as base class. The - concept is well known as 'input context' in the input method - domain. An input context is created for a text widget in response - to a demand. It is ensured that an input context is prepared for - an input method before input to a text widget. - - Multiple input contexts that belong to a single input method - may concurrently coexist. Suppose multi-window text editor. Each - text widget of window A and B holds different QInputContext - instance which contains different state information such as - partially composed text. - - \section1 Groups of Functions - - \table - \header \o Context \o Functions - - \row \o Receiving information \o - x11FilterEvent(), - filterEvent(), - mouseHandler() - - \row \o Sending back composed text \o - sendEvent() - - \row \o State change notification \o - setFocusWidget(), - reset() - - \row \o Context information \o - identifierName(), - language(), - font(), - isComposing() - - \endtable - - \section1 Licensing Information - - \legalese - Copyright (C) 2003-2004 immodule for Qt Project. All rights reserved. - - This file is written to contribute to Nokia Corporation and/or its subsidiary(-ies) under their own - license. You may use this file under your Qt license. Following - description is copied from their original file headers. Contact - immodule-qt@freedesktop.org if any conditions of this licensing are - not clear to you. - \endlegalese - - \sa QInputContextPlugin, QInputContextFactory, QApplication::setInputContext() -*/ - -/*! - Constructs an input context with the given \a parent. -*/ -QInputContext::QInputContext(QObject* parent) - : QObject(*new QInputContextPrivate, parent) -{ -} - - -/*! - Destroys the input context. -*/ -QInputContext::~QInputContext() -{ -} - -/*! - Returns the widget that has an input focus for this input - context. - - The return value may differ from holderWidget() if the input - context is shared between several text widgets. - - \warning To ensure platform independence and support flexible - configuration of widgets, ordinary input methods should not call - this function directly. - - \sa setFocusWidget() -*/ -QWidget *QInputContext::focusWidget() const -{ - Q_D(const QInputContext); - return d->focusWidget; -} - - -/*! - Sets the \a widget that has an input focus for this input context. - - \warning Ordinary input methods must not call this function - directly. - - \sa focusWidget() -*/ -void QInputContext::setFocusWidget(QWidget *widget) -{ - Q_ASSERT(!widget || widget->testAttribute(Qt::WA_InputMethodEnabled)); - Q_D(QInputContext); - d->focusWidget = widget; -} - -/*! - \fn bool QInputContext::isComposing() const - - This function indicates whether InputMethodStart event had been - sent to the current focus widget. It is ensured that an input - context can send InputMethodCompose or InputMethodEnd event safely - if this function returned true. - - The state is automatically being tracked through sendEvent(). - - \sa sendEvent() -*/ - -/*! - This function can be reimplemented in a subclass to filter input - events. - - Return true if the \a event has been consumed. Otherwise, the - unfiltered \a event will be forwarded to widgets as ordinary - way. Although the input events have accept() and ignore() - methods, leave it untouched. - - \a event is currently restricted to events of these types: - - \list - \i CloseSoftwareInputPanel - \i KeyPress - \i KeyRelease - \i MouseButtonDblClick - \i MouseButtonPress - \i MouseButtonRelease - \i MouseMove - \i RequestSoftwareInputPanel - \endlist - - But some input method related events such as QWheelEvent or - QTabletEvent may be added in future. - - The filtering opportunity is always given to the input context as - soon as possible. It has to be taken place before any other key - event consumers such as eventfilters and accelerators because some - input methods require quite various key combination and - sequences. It often conflicts with accelerators and so on, so we - must give the input context the filtering opportunity first to - ensure all input methods work properly regardless of application - design. - - Ordinary input methods require discrete key events to work - properly, so Qt's key compression is always disabled for any input - contexts. - - \sa QKeyEvent, x11FilterEvent() -*/ -bool QInputContext::filterEvent(const QEvent * /*event*/) -{ - return false; -} - -/*! - Sends an input method event specified by \a event to the current focus - widget. Implementations of QInputContext should call this method to - send the generated input method events and not - QApplication::sendEvent(), as the events might have to get dispatched - to a different application on some platforms. - - Some complex input methods route the handling to several child - contexts (e.g. to enable language switching). To account for this, - QInputContext will check if the parent object is a QInputContext. If - yes, it will call the parents sendEvent() implementation instead of - sending the event directly. - - \sa QInputMethodEvent -*/ -void QInputContext::sendEvent(const QInputMethodEvent &event) -{ - // route events over input context parents to make chaining possible. - QInputContext *p = qobject_cast<QInputContext *>(parent()); - if (p) { - p->sendEvent(event); - return; - } - - QWidget *focus = focusWidget(); - if (!focus) - return; - - QInputMethodEvent e(event); - QApplication::sendEvent(focus, &e); -} - - -/*! - This function can be reimplemented in a subclass to handle mouse - press, release, double-click, and move events within the preedit - text. You can use the function to implement mouse-oriented user - interface such as text selection or popup menu for candidate - selection. - - The \a x parameter is the offset within the string that was sent - with the InputMethodCompose event. The alteration boundary of \a - x is ensured as character boundary of preedit string accurately. - - The \a event parameter is the event that was sent to the editor - widget. The event type is QEvent::MouseButtonPress, - QEvent::MouseButtonRelease, QEvent::MouseButtonDblClick or - QEvent::MouseMove. The event's button and state indicate - the kind of operation that was performed. -*/ -void QInputContext::mouseHandler(int /*x*/, QMouseEvent *event) -{ - // Default behavior for simple ephemeral input contexts. Some - // complex input contexts should not be reset here. - if (event->type() == QEvent::MouseButtonPress || event->type() == QEvent::MouseButtonDblClick) - reset(); -} - - -/*! - Returns the font of the current input widget -*/ -QFont QInputContext::font() const -{ - Q_D(const QInputContext); - if (!d->focusWidget) - return QApplication::font(); - - return qvariant_cast<QFont>(d->focusWidget->inputMethodQuery(Qt::ImFont)); -} - -/*! - This virtual function is called when a state in the focus widget - has changed. QInputContext can then use - QWidget::inputMethodQuery() to query the new state of the widget. -*/ -void QInputContext::update() -{ -} - -/*! - This virtual function is called when the specified \a widget is - destroyed. The \a widget is a widget on which this input context - is installed. -*/ -void QInputContext::widgetDestroyed(QWidget *widget) -{ - Q_D(QInputContext); - if (widget == d->focusWidget) - setFocusWidget(0); -} - -/*! - \fn void QInputContext::reset() - - This function can be reimplemented in a subclass to reset the - state of the input method. - - This function is called by several widgets to reset input - state. For example, a text widget call this function before - inserting a text to make widget ready to accept a text. - - Default implementation is sufficient for simple input method. You - can override this function to reset external input method engines - in complex input method. In the case, call QInputContext::reset() - to ensure proper termination of inputting. - - In a reimplementation of reset(), you must not send any - QInputMethodEvent containing preedit text. You can only commit - string and attributes; otherwise, you risk breaking input state - consistency. -*/ - - -/*! - \fn QString QInputContext::identifierName() - - This function must be implemented in any subclasses to return the - identifier name of the input method. - - Return value is the name to identify and specify input methods for - the input method switching mechanism and so on. The name has to be - consistent with QInputContextPlugin::keys(). The name has to - consist of ASCII characters only. - - There are two different names with different responsibility in the - input method domain. This function returns one of them. Another - name is called 'display name' that stands for the name for - endusers appeared in a menu and so on. - - \sa QInputContextPlugin::keys(), QInputContextPlugin::displayName() -*/ - - -/*! - \fn QString QInputContext::language() - - This function must be implemented in any subclasses to return a - language code (e.g. "zh_CN", "zh_TW", "zh_HK", "ja", "ko", ...) - of the input context. If the input context can handle multiple - languages, return the currently used one. The name has to be - consistent with QInputContextPlugin::language(). - - This information will be used by language tagging feature in - QInputMethodEvent. It is required to distinguish unified han characters - correctly. It enables proper font and character code - handling. Suppose CJK-awared multilingual web browser - (that automatically modifies fonts in CJK-mixed text) and XML editor - (that automatically inserts lang attr). -*/ - - -/*! - This is a preliminary interface for Qt 4. -*/ -QList<QAction *> QInputContext::actions() -{ - return QList<QAction *>(); -} - -/*! - \enum QInputContext::StandardFormat - - \value PreeditFormat The preedit text. - \value SelectionFormat The selection text. - - \sa standardFormat() -*/ - -/*! - Returns a QTextFormat object that specifies the format for - component \a s. -*/ -QTextFormat QInputContext::standardFormat(StandardFormat s) const -{ - QWidget *focus = focusWidget(); - const QPalette &pal = focus ? focus->palette() : QApplication::palette(); - - QTextCharFormat fmt; - QColor bg; - switch (s) { - case QInputContext::PreeditFormat: { - fmt.setUnderlineStyle(QTextCharFormat::DashUnderline); - break; - } - case QInputContext::SelectionFormat: { - bg = pal.text().color(); - fmt.setBackground(QBrush(bg)); - fmt.setForeground(pal.background()); - break; - } - } - return fmt; -} - -#ifdef Q_WS_X11 -/*! - This function may be overridden only if input method is depending - on X11 and you need raw XEvent. Otherwise, this function must not. - - This function is designed to filter raw key events for XIM, but - other input methods may use this to implement some special - features such as distinguishing Shift_L and Shift_R. - - Return true if the \a event has been consumed. Otherwise, the - unfiltered \a event will be translated into QEvent and forwarded - to filterEvent(). Filtering at both x11FilterEvent() and - filterEvent() in single input method is allowed. - - \a keywidget is a client widget into which a text is inputted. \a - event is inputted XEvent. - - \sa filterEvent() -*/ -bool QInputContext::x11FilterEvent(QWidget * /*keywidget*/, XEvent * /*event*/) -{ - return false; -} -#endif // Q_WS_X11 - -#ifdef Q_OS_SYMBIAN -/*! - \since 4.6 - - This function may be overridden only if input method is depending - on Symbian and you need raw Symbian events. Otherwise, this function must not. - - This function is designed to filter raw key events on Symbian, but - other input methods may use this to implement some special - features. - - Return true if the \a event has been consumed. Otherwise, the - unfiltered \a event will be translated into QEvent and forwarded - to filterEvent(). Filtering at both symbianFilterEvent() and - filterEvent() in single input method is allowed. - - \a keywidget is a client widget into which a text is inputted. \a - event is inputted QSymbianEvent. - - \sa filterEvent() -*/ -bool QInputContext::symbianFilterEvent(QWidget * /*keywidget*/, const QSymbianEvent * /*event*/) -{ - return false; -} -#endif // Q_OS_SYMBIAN - -QT_END_NAMESPACE - -#endif //Q_NO_IM |