src/declarative/graphicsitems/qdeclarativeevents.cpp
author Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
Mon, 04 Oct 2010 01:19:32 +0300
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permissions -rw-r--r--
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/****************************************************************************
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**
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** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
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** All rights reserved.
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** Contact: Nokia Corporation (qt-info@nokia.com)
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**
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** This file is part of the QtDeclarative module of the Qt Toolkit.
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**
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** $QT_BEGIN_LICENSE:LGPL$
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** No Commercial Usage
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** This file contains pre-release code and may not be distributed.
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** You may use this file in accordance with the terms and conditions
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** contained in the Technology Preview License Agreement accompanying
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** this package.
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**
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** GNU Lesser General Public License Usage
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** Alternatively, this file may be used under the terms of the GNU Lesser
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** General Public License version 2.1 as published by the Free Software
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** Foundation and appearing in the file LICENSE.LGPL included in the
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** packaging of this file.  Please review the following information to
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** ensure the GNU Lesser General Public License version 2.1 requirements
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** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
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**
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** In addition, as a special exception, Nokia gives you certain additional
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** rights.  These rights are described in the Nokia Qt LGPL Exception
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** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
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**
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** If you have questions regarding the use of this file, please contact
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** Nokia at qt-info@nokia.com.
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**
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**
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**
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**
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**
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**
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**
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**
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** $QT_END_LICENSE$
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**
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****************************************************************************/
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#include "private/qdeclarativeevents_p_p.h"
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QT_BEGIN_NAMESPACE
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/*!
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    \qmlclass KeyEvent QDeclarativeKeyEvent
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    \since 4.7
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    \ingroup qml-event-elements
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    \brief The KeyEvent object provides information about a key event.
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    For example, the following changes the Item's state property when the Enter
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    key is pressed:
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    \qml
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Item {
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    focus: true
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    Keys.onPressed: { if (event.key == Qt.Key_Enter) state = 'ShowDetails'; }
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}
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    \endqml
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*/
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/*!
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    \qmlproperty int KeyEvent::key
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    This property holds the code of the key that was pressed or released.
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    See \l {Qt::Key}{Qt.Key} for the list of keyboard codes. These codes are
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    independent of the underlying window system. Note that this
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    function does not distinguish between capital and non-capital
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    letters, use the text() function (returning the Unicode text the
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    key generated) for this purpose.
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    A value of either 0 or \l {Qt::Key_unknown}{Qt.Key_Unknown} means that the event is not
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    the result of a known key; for example, it may be the result of
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    a compose sequence, a keyboard macro, or due to key event
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    compression.
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*/
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/*!
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    \qmlproperty string KeyEvent::text
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    This property holds the Unicode text that the key generated.
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    The text returned can be an empty string in cases where modifier keys,
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    such as Shift, Control, Alt, and Meta, are being pressed or released.
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    In such cases \c key will contain a valid value
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*/
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/*!
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    \qmlproperty bool KeyEvent::isAutoRepeat
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    This property holds whether this event comes from an auto-repeating key.
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*/
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/*!
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    \qmlproperty int KeyEvent::count
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    This property holds the number of keys involved in this event. If \l KeyEvent::text
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    is not empty, this is simply the length of the string.
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*/
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/*!
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    \qmlproperty bool KeyEvent::accepted
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    Setting \a accepted to true prevents the key event from being
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    propagated to the item's parent.
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    Generally, if the item acts on the key event then it should be accepted
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    so that ancestor items do not also respond to the same event.
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*/
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/*!
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    \qmlclass MouseEvent QDeclarativeMouseEvent
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    \since 4.7
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    \ingroup qml-event-elements
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30
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    \brief The MouseEvent object provides information about a mouse event.
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    The position of the mouse can be found via the x and y properties.
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    The button that caused the event is available via the button property.
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*/
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/*!
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    \internal
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    \class QDeclarativeMouseEvent
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*/
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/*!
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    \qmlproperty int MouseEvent::x
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    \qmlproperty int MouseEvent::y
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    These properties hold the position of the mouse event.
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*/
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/*!
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    \qmlproperty bool MouseEvent::accepted
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    Setting \a accepted to true prevents the mouse event from being
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    propagated to items below this item.
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    Generally, if the item acts on the mouse event then it should be accepted
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    so that items lower in the stacking order do not also respond to the same event.
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*/
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/*!
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    \qmlproperty enumeration MouseEvent::button
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    This property holds the button that caused the event.  It can be one of:
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    \list
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    \o Qt.LeftButton
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    \o Qt.RightButton
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    \o Qt.MiddleButton
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    \endlist
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*/
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/*!
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    \qmlproperty bool MouseEvent::wasHeld
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    This property is true if the mouse button has been held pressed longer the
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    threshold (800ms).
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*/
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/*!
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    \qmlproperty int MouseEvent::buttons
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    This property holds the mouse buttons pressed when the event was generated.
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    For mouse move events, this is all buttons that are pressed down. For mouse
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    press and double click events this includes the button that caused the event.
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    For mouse release events this excludes the button that caused the event.
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    It contains a bitwise combination of:
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    \list
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    \o Qt.LeftButton
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    \o Qt.RightButton
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    \o Qt.MiddleButton
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    \endlist
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*/
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/*!
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    \qmlproperty int MouseEvent::modifiers
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    This property holds the keyboard modifier flags that existed immediately
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    before the event occurred.
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    It contains a bitwise combination of:
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    \list
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    \o Qt.NoModifier - No modifier key is pressed.
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    \o Qt.ShiftModifier	- A Shift key on the keyboard is pressed.
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    \o Qt.ControlModifier - A Ctrl key on the keyboard is pressed.
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    \o Qt.AltModifier - An Alt key on the keyboard is pressed.
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    \o Qt.MetaModifier - A Meta key on the keyboard is pressed.
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    \o Qt.KeypadModifier - A keypad button is pressed.
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    \endlist
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    For example, to react to a Shift key + Left mouse button click:
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    \qml
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MouseArea {
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    onClicked: { if (mouse.button == Qt.LeftButton && mouse.modifiers & Qt.ShiftModifier) doSomething(); }
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}
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    \endqml
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*/
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QT_END_NAMESPACE