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Diffstat (limited to 'src/gui/accessible/qaccessible.h')
| -rw-r--r-- | src/gui/accessible/qaccessible.h | 417 |
1 files changed, 417 insertions, 0 deletions
diff --git a/src/gui/accessible/qaccessible.h b/src/gui/accessible/qaccessible.h new file mode 100644 index 0000000..91f18b3 --- /dev/null +++ b/src/gui/accessible/qaccessible.h @@ -0,0 +1,417 @@ +/**************************************************************************** +** +** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies). +** Contact: Qt Software Information (qt-info@nokia.com) +** +** This file is part of the QtGui module of the Qt Toolkit. +** +** $QT_BEGIN_LICENSE:LGPL$ +** No Commercial Usage +** This file contains pre-release code and may not be distributed. +** You may use this file in accordance with the terms and conditions +** contained in the either Technology Preview License Agreement or the +** Beta Release License Agreement. +** +** 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, Nokia gives you certain +** additional rights. These rights are described in the Nokia Qt LGPL +** Exception version 1.0, 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. +** +** If you are unsure which license is appropriate for your use, please +** contact the sales department at qt-sales@nokia.com. +** $QT_END_LICENSE$ +** +****************************************************************************/ + +#ifndef QACCESSIBLE_H +#define QACCESSIBLE_H + +#include <QtCore/qglobal.h> +#include <QtCore/qobject.h> +#include <QtCore/qrect.h> +#include <QtCore/qset.h> +#include <QtCore/qvector.h> +#include <QtCore/qvariant.h> +#include <QtGui/qcolor.h> +#include <QtGui/qevent.h> + +QT_BEGIN_HEADER + +QT_BEGIN_NAMESPACE + +QT_MODULE(Gui) + +#ifndef QT_NO_ACCESSIBILITY + +class QAccessibleInterface; + +class Q_GUI_EXPORT QAccessible +{ +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 StateFlag { + Normal = 0x00000000, + Unavailable = 0x00000001, + Selected = 0x00000002, + Focused = 0x00000004, + Pressed = 0x00000008, + Checked = 0x00000010, + Mixed = 0x00000020, + ReadOnly = 0x00000040, + HotTracked = 0x00000080, + DefaultButton = 0x00000100, + Expanded = 0x00000200, + Collapsed = 0x00000400, + Busy = 0x00000800, + // Floating = 0x00001000, + Marqueed = 0x00002000, + Animated = 0x00004000, + Invisible = 0x00008000, + Offscreen = 0x00010000, + Sizeable = 0x00020000, + Movable = 0x00040000, +#ifdef QT3_SUPPORT + Moveable = Movable, +#endif + SelfVoicing = 0x00080000, + Focusable = 0x00100000, + Selectable = 0x00200000, + Linked = 0x00400000, + Traversed = 0x00800000, + MultiSelectable = 0x01000000, + ExtSelectable = 0x02000000, + //AlertLow = 0x04000000, + //AlertMedium = 0x08000000, + //AlertHigh = 0x10000000, /* reused for HasInvokeExtension */ + Protected = 0x20000000, + HasPopup = 0x40000000, + Modal = 0x80000000, + + HasInvokeExtension = 0x10000000 // internal + }; + Q_DECLARE_FLAGS(State, StateFlag) + + 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, + Assistant = 0x00000020, + List = 0x00000021, + ListItem = 0x00000022, + Tree = 0x00000023, + TreeItem = 0x00000024, + PageTab = 0x00000025, + PropertyPage = 0x00000026, + Indicator = 0x00000027, + Graphic = 0x00000028, + StaticText = 0x00000029, + EditableText = 0x0000002A, // Editable, selectable, etc. + PushButton = 0x0000002B, + CheckBox = 0x0000002C, + RadioButton = 0x0000002D, + ComboBox = 0x0000002E, + // DropList = 0x0000002F, + ProgressBar = 0x00000030, + Dial = 0x00000031, + HotkeyField = 0x00000032, + Slider = 0x00000033, + SpinBox = 0x00000034, + Canvas = 0x00000035, + Animation = 0x00000036, + Equation = 0x00000037, + ButtonDropDown = 0x00000038, + ButtonMenu = 0x00000039, + ButtonDropGrid = 0x0000003A, + Whitespace = 0x0000003B, + PageTabList = 0x0000003C, + Clock = 0x0000003D, + Splitter = 0x0000003E, + LayeredPane = 0x0000003F, + UserRole = 0x0000ffff + }; + + enum Text { + Name = 0, + Description, + Value, + Help, + Accelerator, + UserText = 0x0000ffff + }; + + enum RelationFlag { + Unrelated = 0x00000000, + Self = 0x00000001, + Ancestor = 0x00000002, + Child = 0x00000004, + Descendent = 0x00000008, + Sibling = 0x00000010, + HierarchyMask = 0x000000ff, + + Up = 0x00000100, + Down = 0x00000200, + Left = 0x00000400, + Right = 0x00000800, + Covers = 0x00001000, + Covered = 0x00002000, + GeometryMask = 0x0000ff00, + + FocusChild = 0x00010000, + Label = 0x00020000, + Labelled = 0x00040000, + Controller = 0x00080000, + Controlled = 0x00100000, + LogicalMask = 0x00ff0000 + }; + Q_DECLARE_FLAGS(Relation, RelationFlag) + + enum Action { + DefaultAction = 0, + Press = -1, + FirstStandardAction = Press, + SetFocus = -2, + Increase = -3, + Decrease = -4, + Accept = -5, + Cancel = -6, + Select = -7, + ClearSelection = -8, + RemoveSelection = -9, + ExtendSelection = -10, + AddToSelection = -11, + LastStandardAction = AddToSelection + }; + + enum Method { + ListSupportedMethods = 0, + SetCursorPosition = 1, + GetCursorPosition = 2, + ForegroundColor = 3, + BackgroundColor = 4 + }; + + typedef QAccessibleInterface*(*InterfaceFactory)(const QString &key, QObject*); + typedef void(*UpdateHandler)(QObject*, int who, Event reason); + typedef void(*RootObjectHandler)(QObject*); + + static void installFactory(InterfaceFactory); + static void removeFactory(InterfaceFactory); + static UpdateHandler installUpdateHandler(UpdateHandler); + static RootObjectHandler installRootObjectHandler(RootObjectHandler); + + static QAccessibleInterface *queryAccessibleInterface(QObject *); + static void updateAccessibility(QObject *, int who, Event reason); + static bool isActive(); + static void setRootObject(QObject*); + + static void initialize(); + static void cleanup(); + +private: + static UpdateHandler updateHandler; + static RootObjectHandler rootObjectHandler; +}; + +Q_DECLARE_OPERATORS_FOR_FLAGS(QAccessible::State) +Q_DECLARE_OPERATORS_FOR_FLAGS(QAccessible::Relation) +QT_END_NAMESPACE +Q_DECLARE_METATYPE(QSet<QAccessible::Method>) +QT_BEGIN_NAMESPACE + +namespace QAccessible2 +{ + enum InterfaceType + { + TextInterface, + EditableTextInterface, + ValueInterface, + TableInterface + }; +} + +class QAccessible2Interface; +class QAccessibleTextInterface; +class QAccessibleEditableTextInterface; +class QAccessibleValueInterface; +class QAccessibleTableInterface; + +class Q_GUI_EXPORT QAccessibleInterface : public QAccessible +{ +public: + virtual ~QAccessibleInterface() {} + // check for valid pointers + virtual bool isValid() const = 0; + virtual QObject *object() const = 0; + + // hierarchy + virtual int childCount() const = 0; + virtual int indexOfChild(const QAccessibleInterface *) const = 0; + + // relations + virtual Relation relationTo(int child, const QAccessibleInterface *other, + int otherChild) const = 0; + virtual int childAt(int x, int y) const = 0; + + // navigation + virtual int navigate(RelationFlag relation, int index, QAccessibleInterface **iface) const = 0; + + // properties and state + virtual QString text(Text t, int child) const = 0; + virtual void setText(Text t, int child, const QString &text) = 0; + virtual QRect rect(int child) const = 0; + virtual Role role(int child) const = 0; + virtual State state(int child) const = 0; + + // action + virtual int userActionCount(int child) const = 0; + virtual QString actionText(int action, Text t, int child) const = 0; + virtual bool doAction(int action, int child, const QVariantList ¶ms = QVariantList()) = 0; + + QVariant invokeMethod(Method method, int child = 0, + const QVariantList ¶ms = QVariantList()); + + inline QSet<Method> supportedMethods() + { return qvariant_cast<QSet<Method> >(invokeMethod(ListSupportedMethods)); } + + inline QColor foregroundColor() + { return qvariant_cast<QColor>(invokeMethod(ForegroundColor)); } + + inline QColor backgroundColor() + { return qvariant_cast<QColor>(invokeMethod(BackgroundColor)); } + + inline QAccessibleTextInterface *textInterface() + { return reinterpret_cast<QAccessibleTextInterface *>(cast_helper(QAccessible2::TextInterface)); } + + inline QAccessibleEditableTextInterface *editableTextInterface() + { return reinterpret_cast<QAccessibleEditableTextInterface *>(cast_helper(QAccessible2::EditableTextInterface)); } + + inline QAccessibleValueInterface *valueInterface() + { return reinterpret_cast<QAccessibleValueInterface *>(cast_helper(QAccessible2::ValueInterface)); } + + inline QAccessibleTableInterface *tableInterface() + { return reinterpret_cast<QAccessibleTableInterface *>(cast_helper(QAccessible2::TableInterface)); } + +private: + QAccessible2Interface *cast_helper(QAccessible2::InterfaceType); +}; + +class Q_GUI_EXPORT QAccessibleInterfaceEx: public QAccessibleInterface +{ +public: + virtual QVariant invokeMethodEx(Method method, int child, const QVariantList ¶ms) = 0; + virtual QVariant virtual_hook(const QVariant &data); + virtual QAccessible2Interface *interface_cast(QAccessible2::InterfaceType) + { return 0; } +}; + + +class Q_GUI_EXPORT QAccessibleEvent : public QEvent +{ +public: + inline QAccessibleEvent(Type type, int child); + inline int child() const { return c; } + inline QString value() const { return val; } + inline void setValue(const QString &aText) { val = aText; } + +private: + int c; + QString val; +}; + +inline QAccessibleEvent::QAccessibleEvent(Type atype, int achild) + : QEvent(atype), c(achild) {} + +#define QAccessibleInterface_iid "com.trolltech.Qt.QAccessibleInterface" +Q_DECLARE_INTERFACE(QAccessibleInterface, QAccessibleInterface_iid) + +#endif // QT_NO_ACCESSIBILITY + +QT_END_NAMESPACE + +QT_END_HEADER + +#endif // QACCESSIBLE_H |