Inheritance diagram for TextRenderer:
Collaboration diagram for TextRenderer:
Public Types | |
| enum | RenderingMode { QtRendering , NativeRendering } |
 Public Types inherited from QWidget | |
| enum | RenderFlag { DrawWindowBackground = 0x1 , DrawChildren = 0x2 , IgnoreMask = 0x4 } |
| Public Types inherited from QPaintDevice | |
| enum | PaintDeviceMetric { PdmWidth = 1 , PdmHeight , PdmWidthMM , PdmHeightMM , PdmNumColors , PdmDepth , PdmDpiX , PdmDpiY , PdmPhysicalDpiX , PdmPhysicalDpiY , PdmDevicePixelRatio , PdmDevicePixelRatioScaled } |
Public Attributes | |
| RenderingMode | m_mode = QtRendering |
| QString | m_text |
Additional Inherited Members | |
| Public Slots inherited from QWidget | |
| void | setEnabled (bool) |
| void | setDisabled (bool) |
| void | setWindowModified (bool) |
| void | setWindowTitle (const QString &) |
| void | setStyleSheet (const QString &styleSheet) |
| void | setFocus () |
| void | update () |
| void | repaint () |
| virtual void | setVisible (bool visible) |
| void | setHidden (bool hidden) |
| void | show () |
| void | hide () |
| void | showMinimized () |
| void | showMaximized () |
| void | showFullScreen () |
| void | showNormal () |
| bool | close () |
| void | raise () |
| void | lower () |
| Public Slots inherited from QObject | |
| void | deleteLater () |
| Signals inherited from QWidget | |
| void | windowTitleChanged (const QString &title) |
| void | windowIconChanged (const QIcon &icon) |
| void | windowIconTextChanged (const QString &iconText) |
| void | customContextMenuRequested (const QPoint &pos) |
| Signals inherited from QObject | |
| void | destroyed (QObject *=nullptr) |
| void | objectNameChanged (const QString &objectName, QPrivateSignal) |
| Static Public Member Functions inherited from QWidget | |
| static void | setTabOrder (QWidget *, QWidget *) |
| static QWidget * | mouseGrabber () |
| static QWidget * | keyboardGrabber () |
| static QWidget * | find (WId) |
| static QWidget * | createWindowContainer (QWindow *window, QWidget *parent=nullptr, Qt::WindowFlags flags=Qt::WindowFlags()) |
| Static Public Member Functions inherited from QObject | |
| static QMetaObject::Connection | connect (const QObject *sender, const char *signal, const QObject *receiver, const char *member, Qt::ConnectionType=Qt::AutoConnection) |
| static QMetaObject::Connection | connect (const QObject *sender, const QMetaMethod &signal, const QObject *receiver, const QMetaMethod &method, Qt::ConnectionType type=Qt::AutoConnection) |
| template<typename Func1 , typename Func2 > | |
| static QMetaObject::Connection | connect (const typename QtPrivate::FunctionPointer< Func1 >::Object *sender, Func1 signal, const typename QtPrivate::FunctionPointer< Func2 >::Object *receiver, Func2 slot, Qt::ConnectionType type=Qt::AutoConnection) |
| static QMetaObject::Connection ::type | connect (const typename QtPrivate::FunctionPointer< Func1 >::Object *sender, Func1 signal, Func2 slot) |
| static QMetaObject::Connection ::type | connect (const typename QtPrivate::FunctionPointer< Func1 >::Object *sender, Func1 signal, const QObject *context, Func2 slot, Qt::ConnectionType type=Qt::AutoConnection) |
| template<typename Func1 , typename Func2 > | |
| static std::enable_if< QtPrivate::FunctionPointer< Func2 >::ArgumentCount==-1 &&!std::is_convertible_v< Func2, const char * >, QMetaObject::Connection >::type | connect (const typename QtPrivate::FunctionPointer< Func1 >::Object *sender, Func1 signal, Func2 slot) |
| template<typename Func1 , typename Func2 > | |
| static std::enable_if< QtPrivate::FunctionPointer< Func2 >::ArgumentCount==-1 &&!std::is_convertible_v< Func2, const char * >, QMetaObject::Connection >::type | connect (const typename QtPrivate::FunctionPointer< Func1 >::Object *sender, Func1 signal, const QObject *context, Func2 slot, Qt::ConnectionType type=Qt::AutoConnection) |
| static bool | disconnect (const QObject *sender, const char *signal, const QObject *receiver, const char *member) |
| static bool | disconnect (const QObject *sender, const QMetaMethod &signal, const QObject *receiver, const QMetaMethod &member) |
| static bool | disconnect (const QMetaObject::Connection &) |
| template<typename Func1 , typename Func2 > | |
| static bool | disconnect (const typename QtPrivate::FunctionPointer< Func1 >::Object *sender, Func1 signal, const typename QtPrivate::FunctionPointer< Func2 >::Object *receiver, Func2 slot) |
| template<typename Func1 > | |
| static bool | disconnect (const typename QtPrivate::FunctionPointer< Func1 >::Object *sender, Func1 signal, const QObject *receiver, void **zero) |
| Static Public Member Functions inherited from QPaintDevice | |
| static qreal | devicePixelRatioFScale () |
| Protected Slots inherited from QWidget | |
| void | updateMicroFocus (Qt::InputMethodQuery query=Qt::ImQueryAll) |
| Protected Member Functions inherited from QWidget | |
| virtual void | mousePressEvent (QMouseEvent *event) |
| virtual void | mouseReleaseEvent (QMouseEvent *event) |
| virtual void | mouseDoubleClickEvent (QMouseEvent *event) |
| virtual void | mouseMoveEvent (QMouseEvent *event) |
| virtual void | keyPressEvent (QKeyEvent *event) |
| virtual void | keyReleaseEvent (QKeyEvent *event) |
| virtual void | focusInEvent (QFocusEvent *event) |
| virtual void | focusOutEvent (QFocusEvent *event) |
| virtual void | enterEvent (QEnterEvent *event) |
| virtual void | leaveEvent (QEvent *event) |
| virtual void | moveEvent (QMoveEvent *event) |
| virtual void | resizeEvent (QResizeEvent *event) |
| virtual void | closeEvent (QCloseEvent *event) |
| virtual void | contextMenuEvent (QContextMenuEvent *event) |
| virtual void | actionEvent (QActionEvent *event) |
| virtual void | showEvent (QShowEvent *event) |
| virtual void | hideEvent (QHideEvent *event) |
| virtual bool | nativeEvent (const QByteArray &eventType, void *message, qintptr *result) |
| virtual void | changeEvent (QEvent *) |
| int | metric (PaintDeviceMetric) const override |
| void | initPainter (QPainter *painter) const override |
| QPaintDevice * | redirected (QPoint *offset) const override |
| QPainter * | sharedPainter () const override |
| virtual void | inputMethodEvent (QInputMethodEvent *) |
| void | create (WId=0, bool initializeWindow=true, bool destroyOldWindow=true) |
| void | destroy (bool destroyWindow=true, bool destroySubWindows=true) |
| virtual bool | focusNextPrevChild (bool next) |
| bool | focusNextChild () |
| bool | focusPreviousChild () |
| QWidget (QWidgetPrivate &d, QWidget *parent, Qt::WindowFlags f) | |
| Protected Member Functions inherited from QObject | |
| QObject * | sender () const |
| int | senderSignalIndex () const |
| int | receivers (const char *signal) const |
| bool | isSignalConnected (const QMetaMethod &signal) const |
| virtual void | timerEvent (QTimerEvent *event) |
| virtual void | childEvent (QChildEvent *event) |
| virtual void | customEvent (QEvent *event) |
| virtual void | connectNotify (const QMetaMethod &signal) |
| virtual void | disconnectNotify (const QMetaMethod &signal) |
| QObject (QObjectPrivate &dd, QObject *parent=nullptr) | |
| Protected Member Functions inherited from QPaintDevice | |
| QPaintDevice () noexcept | |
| Protected Attributes inherited from QObject | |
| QScopedPointer< QObjectData > | d_ptr |
| Protected Attributes inherited from QPaintDevice | |
| ushort | painters |
| Properties inherited from QWidget | |
| bool | modal |
| whether the widget is a modal widget More... | |
| Qt::WindowModality | windowModality |
| which windows are blocked by the modal widget More... | |
| bool | enabled |
| whether the widget is enabled More... | |
| QRect | geometry |
| the geometry of the widget relative to its parent and excluding the window frame More... | |
| QRect | frameGeometry |
| geometry of the widget relative to its parent including any window frame More... | |
| QRect | normalGeometry |
| the geometry of the widget as it will appear when shown as a normal (not maximized or full screen) top-level widget More... | |
| int | x |
| the x coordinate of the widget relative to its parent including any window frame More... | |
| int | y |
| the y coordinate of the widget relative to its parent and including any window frame More... | |
| QPoint | pos |
| the position of the widget within its parent widget More... | |
| QSize | frameSize |
| the size of the widget including any window frame More... | |
| QSize | size |
| the size of the widget excluding any window frame More... | |
| int | width |
| the width of the widget excluding any window frame More... | |
| int | height |
| the height of the widget excluding any window frame More... | |
| QRect | rect |
| the internal geometry of the widget excluding any window frame More... | |
| QRect | childrenRect |
| the bounding rectangle of the widget's children More... | |
| QRegion | childrenRegion |
| the combined region occupied by the widget's children More... | |
| QSizePolicy | sizePolicy |
| the default layout behavior of the widget More... | |
| QSize | minimumSize |
| the widget's minimum size More... | |
| QSize | maximumSize |
| the widget's maximum size in pixels More... | |
| int | minimumWidth |
| the widget's minimum width in pixels More... | |
| int | minimumHeight |
| the widget's minimum height in pixels More... | |
| int | maximumWidth |
| the widget's maximum width in pixels More... | |
| int | maximumHeight |
| the widget's maximum height in pixels More... | |
| QSize | sizeIncrement |
| the size increment of the widget More... | |
| QSize | baseSize |
| the base size of the widget More... | |
| QPalette | palette |
| the widget's palette More... | |
| QFont | font |
| the font currently set for the widget More... | |
| QCursor | cursor |
| the cursor shape for this widget More... | |
| bool | mouseTracking |
| whether mouse tracking is enabled for the widget More... | |
| bool | tabletTracking |
| whether tablet tracking is enabled for the widget More... | |
| bool | isActiveWindow |
| whether this widget's window is the active window More... | |
| Qt::FocusPolicy | focusPolicy |
| the way the widget accepts keyboard focus More... | |
| bool | focus |
| whether this widget (or its focus proxy) has the keyboard input focus More... | |
| Qt::ContextMenuPolicy | contextMenuPolicy |
| how the widget shows a context menu More... | |
| bool | updatesEnabled |
| whether updates are enabled More... | |
| bool | visible |
| whether the widget is visible More... | |
| bool | minimized |
| whether this widget is minimized (iconified) More... | |
| bool | maximized |
| whether this widget is maximized More... | |
| bool | fullScreen |
| whether the widget is shown in full screen mode More... | |
| QSize | sizeHint |
| the recommended size for the widget More... | |
| QSize | minimumSizeHint |
| the recommended minimum size for the widget More... | |
| bool | acceptDrops |
| whether drop events are enabled for this widget More... | |
| QString | windowTitle |
| the window title (caption) More... | |
| QIcon | windowIcon |
| the widget's icon More... | |
| QString | windowIconText |
| the text to be displayed on the icon of a minimized window More... | |
| double | windowOpacity |
| The level of opacity for the window. More... | |
| bool | windowModified |
| whether the document shown in the window has unsaved changes More... | |
| QString | accessibleName |
| the widget's name as seen by assistive technologies More... | |
| QString | accessibleDescription |
| the widget's description as seen by assistive technologies More... | |
| Qt::LayoutDirection | layoutDirection |
| the layout direction for this widget. More... | |
| bool | autoFillBackground |
| whether the widget background is filled automatically More... | |
| QString | styleSheet |
| the widget's style sheet More... | |
| QLocale | locale |
| the widget's locale More... | |
| QString | windowFilePath |
| the file path associated with a widget More... | |
| Qt::InputMethodHints | inputMethodHints |
| What input method specific hints the widget has. More... | |
| Properties inherited from QObject | |
| QString | objectName |
| the name of this object More... | |
| Related Functions inherited from QWidget | |
| setupUi (QWidget *widget) | |
| Related Functions inherited from QObject | |
| template< class T > T | qobject_cast (const QObject *object) |
| template< typename T > T | qFindChildqFindChildren (const QObject *obj, const QString &name)() |
| template< typename T > QList< T > | qFindChildrenqFindChildren (const QObject *obj, const QString &name)() |
| QObjectList | |
Detailed Description
Member Enumeration Documentation
◆ RenderingMode
Constructor & Destructor Documentation
◆ TextRenderer()
Member Function Documentation
◆ event()
|
inlineoverridevirtual |
This is the main event handler; it handles event event. You can reimplement this function in a subclass, but we recommend using one of the specialized event handlers instead.
Key press and release events are treated differently from other events. event() checks for Tab and Shift+Tab and tries to move the focus appropriately. If there is no widget to move the focus to (or the key press is not Tab or Shift+Tab), event() calls keyPressEvent().
Mouse and tablet event handling is also slightly special: only when the widget is \l enabled, event() will call the specialized handlers such as mousePressEvent(); otherwise it will discard the event.
This function returns true if the event was recognized, otherwise it returns false. If the recognized event was accepted (see \l QEvent::accepted), any further processing such as event propagation to the parent widget stops.
- See also
- closeEvent(), focusInEvent(), focusOutEvent(), enterEvent(), keyPressEvent(), keyReleaseEvent(), leaveEvent(), mouseDoubleClickEvent(), mouseMoveEvent(), mousePressEvent(), mouseReleaseEvent(), moveEvent(), paintEvent(), resizeEvent(), QObject::event(), QObject::timerEvent()
Reimplemented from QWidget.
Definition at line 82 of file main.cpp.
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◆ paintEvent()
|
inlineoverridevirtual |
This event handler can be reimplemented in a subclass to receive paint events passed in event.
A paint event is a request to repaint all or part of a widget. It can happen for one of the following reasons:
\list
- repaint() or update() was invoked,
- the widget was obscured and has now been uncovered, or
- many other reasons. \endlist
Many widgets can simply repaint their entire surface when asked to, but some slow widgets need to optimize by painting only the requested region: QPaintEvent::region(). This speed optimization does not change the result, as painting is clipped to that region during event processing. QListView and QTableView do this, for example.
Qt also tries to speed up painting by merging multiple paint events into one. When update() is called several times or the window system sends several paint events, Qt merges these events into one event with a larger region (see QRegion::united()). The repaint() function does not permit this optimization, so we suggest using update() whenever possible.
When the paint event occurs, the update region has normally been erased, so you are painting on the widget's background.
The background can be set using setBackgroundRole() and setPalette().
Since Qt 4.0, QWidget automatically double-buffers its painting, so there is no need to write double-buffering code in paintEvent() to avoid flicker.
- Note
- Generally, you should refrain from calling update() or repaint() {inside} a paintEvent(). For example, calling update() or repaint() on children inside a paintEvent() results in undefined behavior; the child may or may not get a paint event.
- Warning
- If you are using a custom paint engine without Qt's backingstore, Qt::WA_PaintOnScreen must be set. Otherwise, QWidget::paintEngine() will never be called; the backingstore will be used instead.
Reimplemented from QWidget.
Definition at line 94 of file main.cpp.
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◆ Q_ENUM()
| TextRenderer::Q_ENUM | ( | RenderingMode | ) |
◆ renderNativeText()
◆ renderQtText()
◆ sizeHint()
|
inlineoverridevirtual |
◆ text()
|
inline |
Member Data Documentation
◆ m_mode
| RenderingMode TextRenderer::m_mode = QtRendering |
◆ m_text
The documentation for this class was generated from the following file:
- tests/manual/textrendering/nativetext/main.cpp
