#include <rangecontrols.h>

Inheritance diagram for QAccessibleDial:

Public Types
enum	DialElements { Self = 0, SpeedoMeter, SliderHandle }

Public Types inherited from QAccessible
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 }
	This enum describes the possible types of action that can occur. More...

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, ActionChanged = 0x0101, ActiveDescendantChanged = 0x0102, AttributeChanged = 0x0103, DocumentContentChanged = 0x0104, DocumentLoadComplete = 0x0105, DocumentLoadStopped = 0x0106, DocumentReload = 0x0107, HyperlinkEndIndexChanged = 0x0108, HyperlinkNumberOfAnchorsChanged = 0x0109, HyperlinkSelectedLinkChanged = 0x010A, HypertextLinkActivated = 0x010B, HypertextLinkSelected = 0x010C, HyperlinkStartIndexChanged = 0x010D, HypertextChanged = 0x010E, HypertextNLinksChanged = 0x010F, ObjectAttributeChanged = 0x0110, PageChanged = 0x0111, SectionChanged = 0x0112, TableCaptionChanged = 0x0113, TableColumnDescriptionChanged = 0x0114, TableColumnHeaderChanged = 0x0115, TableModelChanged = 0x0116, TableRowDescriptionChanged = 0x0117, TableRowHeaderChanged = 0x0118, TableSummaryChanged = 0x0119, TextAttributeChanged = 0x011A, TextCaretMoved = 0x011B, TextColumnChanged = 0x011D, TextInserted = 0x011E, TextRemoved = 0x011F, TextUpdated = 0x0120, TextSelectionChanged = 0x0121, VisibleDataChanged = 0x0122, 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 }
	This enum type defines accessible event types. More...

typedef QAccessibleInterface (	InterfaceFactory) (const QString &key, QObject *)
	This is a typedef for a pointer to a function with the following signature: More...

enum	Method { ListSupportedMethods = 0, SetCursorPosition = 1, GetCursorPosition = 2, ForegroundColor = 3, BackgroundColor = 4 }
	This enum describes the possible types of methods that can be invoked on an accessible object. More...

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 }
	This enum type defines bit flags that can be combined to indicate the relationship between two accessible objects. More...

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, PushButton = 0x0000002B, CheckBox = 0x0000002C, RadioButton = 0x0000002D, ComboBox = 0x0000002E, 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, Terminal = 0x00000040, Desktop = 0x00000041, UserRole = 0x0000ffff }
	This enum defines the role of an accessible object. More...

typedef void(*	RootObjectHandler) (QObject *)
	A function pointer type. More...

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, Marqueed = 0x00002000, Animated = 0x00004000, Invisible = 0x00008000, Offscreen = 0x00010000, Sizeable = 0x00020000, Movable = 0x00040000, SelfVoicing = 0x00080000, Focusable = 0x00100000, Selectable = 0x00200000, Linked = 0x00400000, Traversed = 0x00800000, MultiSelectable = 0x01000000, ExtSelectable = 0x02000000, Protected = 0x20000000, HasPopup = 0x40000000, Modal = 0x80000000, HasInvokeExtension = 0x10000000 }
	This enum type defines bit flags that can be combined to indicate the state of an accessible object. More...

enum	Text { Name = 0, Description, Value, Help, Accelerator, UserText = 0x0000ffff }
	This enum specifies string information that an accessible object returns. More...

typedef void(*	UpdateHandler) (QObject *, int who, Event reason)
	A function pointer type. More...

Public Functions
int	childCount () const
	Returns the number of children that belong to this object. More...

QVariant	invokeMethodEx (Method method, int child, const QVariantList &params)

	QAccessibleDial (QWidget *w)

QRect	rect (int child) const
	Returns the geometry of the object, or of the object's child if child is not 0. More...

Role	role (int child) const
	Returns the role of the object, or of the object's child if child is not 0. More...

State	state (int child) const
	Returns the current state of the object, or of the object's child if child is not 0. More...

QString	text (Text textType, int child) const
	Returns the value of the text property t of the object, or of the object's child if child is not 0. More...

Public Functions inherited from QAccessibleWidgetEx
QString	actionText (int action, Text t, int child) const
	Returns the text property t of the action action supported by the object, or of the object's child if child is not 0. More...

int	childAt (int x, int y) const
	Returns the 1-based index of the child that contains the screen coordinates (x, y). More...

bool	doAction (int action, int child, const QVariantList &params)
	Asks the object, or the object's child if child is not 0, to execute action using the parameters, params. More...

int	indexOfChild (const QAccessibleInterface *child) const
	Returns the 1-based index of the object child in this object's children list, or -1 if child is not a child of this object. More...

int	navigate (RelationFlag rel, int entry, QAccessibleInterface **target) const
	Navigates from this object to an object that has a relationship relation to this object, and returns the respective object in target. More...

	QAccessibleWidgetEx (QWidget *o, Role r=Client, const QString &name=QString())

Relation	relationTo (int child, const QAccessibleInterface *other, int otherChild) const
	Returns the relationship between this object's \a child and the \a other object's \a otherChild. More...

Public Functions inherited from QAccessibleObjectEx
bool	isValid () const
	Returns true if all the data necessary to use this interface implementation is valid (e. More...

QObject *	object () const
	Returns a pointer to the QObject this interface implementation provides information for. More...

	QAccessibleObjectEx (QObject *object)

void	setText (Text t, int child, const QString &text)
	Sets the text property t of the object, or of the object's child if child is not 0, to text. More...

int	userActionCount (int child) const
	Returns the number of custom actions of the object, or of the object's child if child is not 0. More...

Public Functions inherited from QAccessibleInterfaceEx
virtual QAccessible2Interface *	interface_cast (QAccessible2::InterfaceType)

virtual QVariant	virtual_hook (const QVariant &data)

Public Functions inherited from QAccessibleInterface
QAccessibleActionInterface *	actionInterface ()

QColor	backgroundColor ()

QAccessibleEditableTextInterface *	editableTextInterface ()

QColor	foregroundColor ()

QAccessibleImageInterface *	imageInterface ()

QVariant	invokeMethod (Method method, int child=0, const QVariantList &params=QVariantList())
	Invokes a method on child with the given parameters params and returns the result of the operation as QVariant. More...

QSet< Method >	supportedMethods ()
	Returns a QSet of QAccessible::Method that are supported by this accessible interface. More...

QAccessibleTable2Interface *	table2Interface ()

QAccessibleTableInterface *	tableInterface ()

QAccessibleTextInterface *	textInterface ()

QAccessibleValueInterface *	valueInterface ()

virtual	~QAccessibleInterface ()
	Destroys the object. More...

Protected Functions
QDial *	dial () const

Protected Functions inherited from QAccessibleWidgetEx
void	addControllingSignal (const QString &signal)

QObject *	parentObject () const

void	setAccelerator (const QString &accel)

void	setDescription (const QString &desc)

void	setHelp (const QString &help)

void	setValue (const QString &value)

QWidget *	widget () const

	~QAccessibleWidgetEx ()

Protected Functions inherited from QAccessibleObjectEx
virtual	~QAccessibleObjectEx ()

Additional Inherited Members
Static Public Functions inherited from QAccessible
static void	cleanup ()

static void	initialize ()

static void	installFactory (InterfaceFactory)
	Installs the InterfaceFactory factory. More...

static RootObjectHandler	installRootObjectHandler (RootObjectHandler)
	Installs the given handler as the function to be used by setRootObject(), and returns the previously installed handler. More...

static UpdateHandler	installUpdateHandler (UpdateHandler)
	Installs the given handler as the function to be used by updateAccessibility(), and returns the previously installed handler. More...

static bool	isActive ()
	Returns true if an accessibility implementation has been requested during the runtime of the application; otherwise returns false. More...

static QAccessibleInterface *	queryAccessibleInterface (QObject *)
	If a QAccessibleInterface implementation exists for the given object, this function returns a pointer to the implementation; otherwise it returns 0. More...

static void	removeFactory (InterfaceFactory)
	Removes factory from the list of installed InterfaceFactories. More...

static void	setRootObject (QObject *)
	Sets the root accessible object of this application to object. More...

static void	updateAccessibility (QObject *, int who, Event reason)
	Notifies accessibility clients about a change in object's accessibility information. More...

Detailed Description

Definition at line 208 of file rangecontrols.h.

Enumerations

◆ DialElements

enum QAccessibleDial::DialElements

Enumerator
Self
SpeedoMeter
SliderHandle

Definition at line 213 of file rangecontrols.h.

                       {
         Self  = 0,
         SpeedoMeter,
         SliderHandle
     };

Constructors and Destructors

◆ QAccessibleDial()

QAccessibleDial::QAccessibleDial ( QWidget * w )

explicit

Definition at line 861 of file rangecontrols.cpp.

     : QAccessibleWidgetEx(widget, Dial)
 {
     Q_ASSERT(qobject_cast<QDial *>(widget));
     addControllingSignal(QLatin1String("valueChanged(int)"));
 }

Functions

◆ childCount()

int QAccessibleDial::childCount ( ) const

virtual

Returns the number of children that belong to this object.

A child can provide accessibility information on its own (e.g. a child widget), or be a sub-element of this accessible object.

All objects provide this information.

See also: indexOfChild()

Reimplemented from QAccessibleWidgetEx.

Definition at line 940 of file rangecontrols.cpp.

 {
     return SliderHandle;
 }

◆ dial()

QDial * QAccessibleDial::dial ( ) const

protected

Definition at line 986 of file rangecontrols.cpp.

Referenced by rect(), and text().

 {
     return static_cast<QDial*>(object());
 }

◆ invokeMethodEx()

QVariant QAccessibleDial::invokeMethodEx	(	Method	method,
		int	child,
		const QVariantList &	params
	)

virtual

Reimplemented from QAccessibleWidgetEx.

Definition at line 981 of file rangecontrols.cpp.

 {
     return QVariant();
 }

◆ rect()

QRect QAccessibleDial::rect ( int child ) const

virtual

Returns the geometry of the object, or of the object's child if child is not 0.

The geometry is in screen coordinates.

This function is only reliable for visible objects (invisible objects might not be laid out correctly).

All visual objects provide this information.

See also: childAt()

Reimplemented from QAccessibleWidgetEx.

Definition at line 868 of file rangecontrols.cpp.

 {
     QRect rect;
     if (!dial()->isVisible())
         return rect;
     switch (child) {
     case Self:
         return QAccessibleWidgetEx::rect(child);
     case SpeedoMeter: {
         // Mixture from qcommonstyle.cpp (focus rect).
         int width = dial()->width();
         int height = dial()->height();
         qreal radius = qMin(width, height) / 2.0;
         qreal delta = radius / 6.0;
         qreal dx = delta + (width - 2 * radius) / 2.0;
         qreal dy = delta + (height - 2 * radius) / 2.0;
         rect = QRect(int(dx), int(dy), int(radius * 2 - 2 * delta), int(radius * 2 - 2 * delta));
         if (dial()->notchesVisible()) {
             rect.translate(int(-radius / 6), int(-radius / 6));
             rect.setWidth(rect.width() + int(radius / 3));
             rect.setHeight(rect.height() + int(radius / 3));
         }
         break;
     }
     case SliderHandle: {
         // Mixture from qcommonstyle.cpp and qdial.cpp.
         int sliderValue = !dial()->invertedAppearance() ? dial()->value()
                                                         : (dial()->maximum() - dial()->value());
         qreal angle = 0;
         if (dial()->maximum() == dial()->minimum()) {
             angle = Q_PI / 2;
         } else if (dial()->wrapping()) {
             angle = Q_PI * 3 / 2 - (sliderValue - dial()->minimum()) * 2 * Q_PI
                     / (dial()->maximum() - dial()->minimum());
         } else {
             angle = (Q_PI * 8 - (sliderValue - dial()->minimum()) * 10 * Q_PI
                     / (dial()->maximum() - dial()->minimum())) / 6;
         }
 
         int width = dial()->rect().width();
         int height = dial()->rect().height();
         int radius = qMin(width, height) / 2;
         int xc = width / 2;
         int yc = height / 2;
         int bigLineSize = radius / 6;
         if (bigLineSize < 4)
             bigLineSize = 4;
         if (bigLineSize > radius / 2)
             bigLineSize = radius / 2;
         int len = radius - bigLineSize - 5;
         if (len < 5)
             len = 5;
         int back = len / 2;
 
         QPolygonF arrow(3);
         arrow[0] = QPointF(0.5 + xc + len * qCos(angle),
                            0.5 + yc - len * qSin(angle));
         arrow[1] = QPointF(0.5 + xc + back * qCos(angle + Q_PI * 5 / 6),
                            0.5 + yc - back * qSin(angle + Q_PI * 5 / 6));
         arrow[2] = QPointF(0.5 + xc + back * qCos(angle - Q_PI * 5 / 6),
                            0.5 + yc - back * qSin(angle - Q_PI * 5 / 6));
         rect = arrow.boundingRect().toRect();
         break;
     }
     default:
         return QRect();
     }
 
     QPoint globalPos = dial()->mapToGlobal(QPoint(0,0));
     return QRect(globalPos.x() + rect.x(), globalPos.y() + rect.y(), rect.width(), rect.height());
 }

◆ role()

QAccessible::Role QAccessibleDial::role ( int child ) const

virtual

Returns the role of the object, or of the object's child if child is not 0.

The role of an object is usually static.

All accessible objects have a role.

See also: text(), state()

Reimplemented from QAccessibleWidgetEx.

Definition at line 964 of file rangecontrols.cpp.

 {
     if (child == SpeedoMeter)
         return Slider;
     else if (child == SliderHandle)
         return Indicator;
     return QAccessibleWidgetEx::role(child);
 }

◆ state()

QAccessible::State QAccessibleDial::state ( int child ) const

virtual

Returns the current state of the object, or of the object's child if child is not 0.

The returned value is a combination of the flags in the QAccessible::StateFlag enumeration.

All accessible objects have a state.

See also: text(), role()

Reimplemented from QAccessibleWidgetEx.

Definition at line 973 of file rangecontrols.cpp.

 {
     const State parentState = QAccessibleWidgetEx::state(0);
     if (child == SliderHandle)
         return parentState | HotTracked;
     return parentState;
 }

◆ text()

QString QAccessibleDial::text	(	Text	t,
		int	child
	)		const

virtual

Returns the value of the text property t of the object, or of the object's child if child is not 0.

The Name is a string used by clients to identify, find, or announce an accessible object for the user. All objects must have a name that is unique within their container. The name can be used differently by clients, so the name should both give a short description of the object and be unique.

An accessible object's Description provides textual information about an object's visual appearance. The description is primarily used to provide greater context for vision-impaired users, but is also used for context searching or other applications. Not all objects have a description. An "OK" button would not need a description, but a tool button that shows a picture of a smiley would.

The Value of an accessible object represents visual information contained by the object, e.g. the text in a line edit. Usually, the value can be modified by the user. Not all objects have a value, e.g. static text labels don't, and some objects have a state that already is the value, e.g. toggle buttons.

The Help text provides information about the function and usage of an accessible object. Not all objects provide this information.

The Accelerator is a keyboard shortcut that activates the object's default action. A keyboard shortcut is the underlined character in the text of a menu, menu item or widget, and is either the character itself, or a combination of this character and a modifier key like Alt, Ctrl or Shift. Command controls like tool buttons also have shortcut keys and usually display them in their tooltip.

All objects provide a string for Name .

See also: role(), state()

Reimplemented from QAccessibleWidgetEx.

Definition at line 945 of file rangecontrols.cpp.

 {
     if (textType == Value && child >= Self && child <= SliderHandle)
         return QString::number(dial()->value());
     if (textType == Name) {
         switch (child) {
         case Self:
             if (!widget()->accessibleName().isEmpty())
                 return widget()->accessibleName();
             return QDial::tr("QDial");
         case SpeedoMeter:
             return QDial::tr("SpeedoMeter");
         case SliderHandle:
             return QDial::tr("SliderHandle");
         }
     }
     return QAccessibleWidgetEx::text(textType, child);
 }

The documentation for this class was generated from the following files:

/src/plugins/accessible/widgets/rangecontrols.h
/src/plugins/accessible/widgets/rangecontrols.cpp

Public Types

Public Functions

Protected Functions

Additional Inherited Members

Detailed Description

Enumerations

◆ DialElements

Constructors and Destructors

◆ QAccessibleDial()

Functions

◆ childCount()

◆ dial()

◆ invokeMethodEx()

◆ rect()

◆ role()

◆ state()

◆ text()