qaccessible.h Include File

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# qaccessible.h

This is the verbatim text of the qaccessible.h include file. It is provided only for illustration; the copyright remains with Trolltech.

    /****************************************************************************
    ** $Id: qt/qaccessible.h   3.3.1   edited Jun 10 2003 $
    **
    ** Definition of QAccessible and QAccessibleObject classes
    **
    ** Copyright (C) 2000-2001 Trolltech AS.  All rights reserved.
    **
    ** This file is part of the kernel module of the Qt GUI Toolkit.
    **
    ** This file may be distributed under the terms of the Q Public License
    ** as defined by Trolltech AS of Norway and appearing in the file
    ** LICENSE.QPL included in the packaging of this file.
    **
    ** This file may be distributed and/or modified under the terms of the
    ** GNU General Public License version 2 as published by the Free Software
    ** Foundation and appearing in the file LICENSE.GPL included in the
    ** packaging of this file.
    **
    ** Licensees holding valid Qt Enterprise Edition or Qt Professional Edition
    ** licenses may use this file in accordance with the Qt Commercial License
    ** Agreement provided with the Software.
    **
    ** This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
    ** WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
    **
    ** See http://www.trolltech.com/pricing.html or email sales@trolltech.com for
    **   information about Qt Commercial License Agreements.
    ** See http://www.trolltech.com/qpl/ for QPL licensing information.
    ** See http://www.trolltech.com/gpl/ for GPL licensing information.
    **
    ** Contact info@trolltech.com if any conditions of this licensing are
    ** not clear to you.
    **
    **********************************************************************/

    #ifndef QACCESSIBLE_H
    #define QACCESSIBLE_H

    #ifndef QT_H
    #include "qobject.h"
    #include <private/qcom_p.h>
    #include "qrect.h"
    #include "qguardedptr.h"
    #include "qmemarray.h"
    #endif // QT_H

    #if defined(QT_ACCESSIBILITY_SUPPORT)

    struct QAccessibleInterface;

    class Q_EXPORT QAccessible
    {
    private:
    #ifdef Q_WS_MAC
        static QMAC_PASCAL OSStatus globalEventProcessor(EventHandlerCallRef,  EventRef, void *);
        static QObject *queryAccessibleObject(QAccessibleInterface *);
    #endif
    public:
        enum Event {
    	SoundPlayed	    = 0x0001,
    	Alert		    = 0x0002,
    	ForegroundChanged   = 0x0003,
    	MenuStart	    = 0x0004,
    	MenuEnd		    = 0x0005,
    	PopupMenuStart	    = 0x0006,
    	PopupMenuEnd	    = 0x0007,
    	ContextHelpStart    = 0x000C,
    	ContextHelpEnd	    = 0x000D,
    	DragDropStart	    = 0x000E,
    	DragDropEnd	    = 0x000F,
    	DialogStart	    = 0x0010,
    	DialogEnd	    = 0x0011,
    	ScrollingStart	    = 0x0012,
    	ScrollingEnd	    = 0x0013,

    	MenuCommand	    = 0x0018,

    	ObjectCreated	    = 0x8000,
    	ObjectDestroyed	    = 0x8001,
    	ObjectShow	    = 0x8002,
    	ObjectHide	    = 0x8003,
    	ObjectReorder	    = 0x8004,
    	Focus		    = 0x8005,
    	Selection	    = 0x8006,
    	SelectionAdd	    = 0x8007,
    	SelectionRemove	    = 0x8008,
    	SelectionWithin	    = 0x8009,
    	StateChanged	    = 0x800A,
    	LocationChanged	    = 0x800B,
    	NameChanged	    = 0x800C,
    	DescriptionChanged  = 0x800D,
    	ValueChanged	    = 0x800E,
    	ParentChanged	    = 0x800F,
    	HelpChanged	    = 0x80A0,
    	DefaultActionChanged= 0x80B0,
    	AcceleratorChanged  = 0x80C0
        };

        enum State {
    	Normal		= 0x00000000,
    	Unavailable	= 0x00000001,
    	Selected	= 0x00000002,
    	Focused		= 0x00000004,
    	Pressed		= 0x00000008,
    	Checked		= 0x00000010,
    	Mixed		= 0x00000020,
    	ReadOnly	= 0x00000040,
    	HotTracked	= 0x00000080,
    	Default		= 0x00000100,
    	Expanded	= 0x00000200,
    	Collapsed	= 0x00000400,
    	Busy		= 0x00000800,
    	Floating	= 0x00001000,
    	Marqueed	= 0x00002000,
    	Animated	= 0x00004000,
    	Invisible	= 0x00008000,
    	Offscreen	= 0x00010000,
    	Sizeable	= 0x00020000,
    	Moveable	= 0x00040000,
    	SelfVoicing	= 0x00080000,
    	Focusable	= 0x00100000,
    	Selectable	= 0x00200000,
    	Linked		= 0x00400000,
    	Traversed	= 0x00800000,
    	MultiSelectable	= 0x01000000,
    	ExtSelectable	= 0x02000000,
    	AlertLow	= 0x04000000,
    	AlertMedium	= 0x08000000,
    	AlertHigh	= 0x10000000,
    	Protected	= 0x20000000,
    	Valid		= 0x3fffffff
        };

        enum Role {
    	NoRole		= 0x00000000,
    	TitleBar	= 0x00000001,
    	MenuBar		= 0x00000002,
    	ScrollBar	= 0x00000003,
    	Grip		= 0x00000004,
    	Sound		= 0x00000005,
    	Cursor		= 0x00000006,
    	Caret		= 0x00000007,
    	AlertMessage	= 0x00000008,
    	Window		= 0x00000009,
    	Client		= 0x0000000A,
    	PopupMenu	= 0x0000000B,
    	MenuItem	= 0x0000000C,
    	ToolTip		= 0x0000000D,
    	Application	= 0x0000000E,
    	Document	= 0x0000000F,
    	Pane		= 0x00000010,
    	Chart		= 0x00000011,
    	Dialog		= 0x00000012,
    	Border		= 0x00000013,
    	Grouping	= 0x00000014,
    	Separator	= 0x00000015,
    	ToolBar		= 0x00000016,
    	StatusBar	= 0x00000017,
    	Table		= 0x00000018,
    	ColumnHeader	= 0x00000019,
    	RowHeader	= 0x0000001A,
    	Column		= 0x0000001B,
    	Row		= 0x0000001C,
    	Cell		= 0x0000001D,
    	Link		= 0x0000001E,
    	HelpBalloon	= 0x0000001F,
    	Character	= 0x00000020,
    	List		= 0x00000021,
    	ListItem	= 0x00000022,
    	Outline		= 0x00000023,
    	OutlineItem	= 0x00000024,
    	PageTab		= 0x00000025,
    	PropertyPage	= 0x00000026,
    	Indicator	= 0x00000027,
    	Graphic		= 0x00000028,
    	StaticText	= 0x00000029,
    	EditableText	= 0x0000002A,  // Editable, selectable, etc.
    	PushButton	= 0x0000002B,
    	CheckBox	= 0x0000002C,
    	RadioButton	= 0x0000002D,
    	ComboBox	= 0x0000002E,
    	DropLest	= 0x0000002F,
    	ProgressBar	= 0x00000030,
    	Dial		= 0x00000031,
    	HotkeyField	= 0x00000032,
    	Slider		= 0x00000033,
    	SpinBox		= 0x00000034,
    	Diagram		= 0x00000035,
    	Animation	= 0x00000036,
    	Equation	= 0x00000037,
    	ButtonDropDown	= 0x00000038,
    	ButtonMenu	= 0x00000039,
    	ButtonDropGrid	= 0x0000003A,
    	Whitespace	= 0x0000003B,
    	PageTabList	= 0x0000003C,
    	Clock		= 0x0000003D
        };

        enum NavDirection {
    	NavUp		= 0x00000001,
    	NavDown		= 0x00000002,
    	NavLeft		= 0x00000003,
    	NavRight	= 0x00000004,
    	NavNext		= 0x00000005,
    	NavPrevious	= 0x00000006,
    	NavFirstChild	= 0x00000007,
    	NavLastChild	= 0x00000008,
    	NavFocusChild	= 0x00000009
        };

        enum Text {
    	Name		= 0,
    	Description,
    	Value,
    	Help,
    	Accelerator,
    	DefaultAction
        };

        static QRESULT queryAccessibleInterface( QObject *, QAccessibleInterface ** );
        static void updateAccessibility( QObject *, int who, Event reason );
        static bool isActive();

        static void initialize();
        static void cleanup();
    };

    // {EC86CB9C-5DA0-4c43-A739-13EBDF1C6B14}
    #define IID_QAccessible QUuid( 0xec86cb9c, 0x5da0, 0x4c43, 0xa7, 0x39, 0x13, 0xeb, 0xdf, 0x1c, 0x6b, 0x14 )

    struct Q_EXPORT QAccessibleInterface : public QAccessible, public QUnknownInterface
    {
        // check for valid pointers
        virtual bool	isValid() const = 0;

        // hierarchy
        virtual int		childCount() const = 0;
        virtual QRESULT	queryChild( int control, QAccessibleInterface** ) const = 0;
        virtual QRESULT	queryParent( QAccessibleInterface** ) const = 0;

        // navigation
        virtual int		controlAt( int x, int y ) const = 0;
        virtual QRect	rect( int control ) const = 0;
        virtual int		navigate( NavDirection direction, int startControl ) const = 0;

        // properties and state
        virtual QString	text( Text t, int control ) const = 0;
        virtual void	setText( Text t, int control, const QString &text ) = 0;
        virtual Role	role( int control ) const = 0;
        virtual State	state( int control ) const = 0;
        virtual QMemArray<int> selection() const = 0;

        // methods
        virtual bool	doDefaultAction( int control ) = 0;
        virtual bool	setFocus( int control ) = 0;
        virtual bool	setSelected( int control, bool on, bool extend ) = 0;
        virtual void	clearSelection() = 0;
    };

    // {49F4C6A7-412F-41DE-9E24-648843421FD3}
    #ifndef IID_QAccessibleFactory
    #define IID_QAccessibleFactory QUuid( 0x49f4c6a7, 0x412f, 0x41de, 0x9e, 0x24, 0x64, 0x88, 0x43, 0x42, 0x1f, 0xd3 )
    #endif

    struct Q_EXPORT QAccessibleFactoryInterface : public QAccessible, public QFeatureListInterface
    {
        virtual QRESULT createAccessibleInterface( const QString &, QObject *, QAccessibleInterface** ) = 0;
    };

    class Q_EXPORT QAccessibleObject : public QObject, public QAccessibleInterface
    {
    public:
        QAccessibleObject( QObject *object );
        virtual ~QAccessibleObject();

        QRESULT	queryInterface( const QUuid &, QUnknownInterface** );
        Q_REFCOUNT

        bool	isValid() const;

    protected:
        QObject *object() const;

    private:
        QGuardedPtr<QObject> object_;
    };

    #define Q_DEFINED_QACCESSIBLE_OBJECT
    #include "qwinexport.h"
    #endif //QT_ACCESSIBILITY_SUPPORT

    #endif //QACCESSIBLE_H