The QPlatformTheme class allows customizing the UI based on themes. More...

#include <qplatformtheme.h>

Inheritance diagram for QPlatformTheme:

Collaboration diagram for QPlatformTheme:

Public Types
enum	ThemeHint { CursorFlashTime , KeyboardInputInterval , MouseDoubleClickInterval , StartDragDistance , StartDragTime , KeyboardAutoRepeatRate , PasswordMaskDelay , StartDragVelocity , TextCursorWidth , DropShadow , MaximumScrollBarDragDistance , ToolButtonStyle , ToolBarIconSize , ItemViewActivateItemOnSingleClick , SystemIconThemeName , SystemIconFallbackThemeName , IconThemeSearchPaths , StyleNames , WindowAutoPlacement , DialogButtonBoxLayout , DialogButtonBoxButtonsHaveIcons , UseFullScreenForPopupMenu , KeyboardScheme , UiEffects , SpellCheckUnderlineStyle , TabFocusBehavior , IconPixmapSizes , PasswordMaskCharacter , DialogSnapToDefaultButton , ContextMenuOnMouseRelease , MousePressAndHoldInterval , MouseDoubleClickDistance , WheelScrollLines , TouchDoubleTapDistance , ShowShortcutsInContextMenus , IconFallbackSearchPaths , MouseQuickSelectionThreshold , InteractiveResizeAcrossScreens , ShowDirectoriesFirst , PreselectFirstFileInDirectory , ButtonPressKeys , SetFocusOnTouchRelease , FlickStartDistance , FlickMaximumVelocity , FlickDeceleration , MenuBarFocusOnAltPressRelease , MouseCursorTheme , MouseCursorSize , UnderlineShortcut }
	This enum describes the available theme hints. More...

enum	DialogType { FileDialog , ColorDialog , FontDialog , MessageDialog }

enum	Palette { SystemPalette , ToolTipPalette , ToolButtonPalette , ButtonPalette , CheckBoxPalette , RadioButtonPalette , HeaderPalette , ComboBoxPalette , ItemViewPalette , MessageBoxLabelPelette , MessageBoxLabelPalette = MessageBoxLabelPelette , TabBarPalette , LabelPalette , GroupBoxPalette , MenuPalette , MenuBarPalette , TextEditPalette , TextLineEditPalette , NPalettes }

enum	Font { SystemFont , MenuFont , MenuBarFont , MenuItemFont , MessageBoxFont , LabelFont , TipLabelFont , StatusBarFont , TitleBarFont , MdiSubWindowTitleFont , DockWidgetTitleFont , PushButtonFont , CheckBoxFont , RadioButtonFont , ToolButtonFont , ItemViewFont , ListViewFont , HeaderViewFont , ListBoxFont , ComboMenuItemFont , ComboLineEditFont , SmallFont , MiniFont , FixedFont , GroupBoxTitleFont , TabButtonFont , EditorFont , NFonts }

enum	StandardPixmap { TitleBarMenuButton , TitleBarMinButton , TitleBarMaxButton , TitleBarCloseButton , TitleBarNormalButton , TitleBarShadeButton , TitleBarUnshadeButton , TitleBarContextHelpButton , DockWidgetCloseButton , MessageBoxInformation , MessageBoxWarning , MessageBoxCritical , MessageBoxQuestion , DesktopIcon , TrashIcon , ComputerIcon , DriveFDIcon , DriveHDIcon , DriveCDIcon , DriveDVDIcon , DriveNetIcon , DirOpenIcon , DirClosedIcon , DirLinkIcon , DirLinkOpenIcon , FileIcon , FileLinkIcon , ToolBarHorizontalExtensionButton , ToolBarVerticalExtensionButton , FileDialogStart , FileDialogEnd , FileDialogToParent , FileDialogNewFolder , FileDialogDetailedView , FileDialogInfoView , FileDialogContentsView , FileDialogListView , FileDialogBack , DirIcon , DialogOkButton , DialogCancelButton , DialogHelpButton , DialogOpenButton , DialogSaveButton , DialogCloseButton , DialogApplyButton , DialogResetButton , DialogDiscardButton , DialogYesButton , DialogNoButton , ArrowUp , ArrowDown , ArrowLeft , ArrowRight , ArrowBack , ArrowForward , DirHomeIcon , CommandLink , VistaShield , BrowserReload , BrowserStop , MediaPlay , MediaStop , MediaPause , MediaSkipForward , MediaSkipBackward , MediaSeekForward , MediaSeekBackward , MediaVolume , MediaVolumeMuted , LineEditClearButton , DialogYesToAllButton , DialogNoToAllButton , DialogSaveAllButton , DialogAbortButton , DialogRetryButton , DialogIgnoreButton , RestoreDefaultsButton , TabCloseButton , NStandardPixmap , CustomBase = 0xf0000000 }

enum	KeyboardSchemes { WindowsKeyboardScheme , MacKeyboardScheme , X11KeyboardScheme , KdeKeyboardScheme , GnomeKeyboardScheme , CdeKeyboardScheme }

enum	UiEffect { GeneralUiEffect = 0x1 , AnimateMenuUiEffect = 0x2 , FadeMenuUiEffect = 0x4 , AnimateComboUiEffect = 0x8 , AnimateTooltipUiEffect = 0x10 , FadeTooltipUiEffect = 0x20 , AnimateToolBoxUiEffect = 0x40 , HoverEffect = 0x80 }

enum	IconOption { DontUseCustomDirectoryIcons = 0x01 }

Public Member Functions
	Q_ENUM (DialogType)

	QPlatformTheme ()

virtual	~QPlatformTheme ()

virtual QPlatformMenuItem *	createPlatformMenuItem () const

virtual QPlatformMenu *	createPlatformMenu () const

virtual QPlatformMenuBar *	createPlatformMenuBar () const

virtual void	showPlatformMenuBar ()

virtual bool	usePlatformNativeDialog (DialogType type) const

virtual QPlatformDialogHelper *	createPlatformDialogHelper (DialogType type) const

virtual QPlatformSystemTrayIcon *	createPlatformSystemTrayIcon () const
	Factory function for QSystemTrayIcon.

virtual Qt::ColorScheme	colorScheme () const

virtual const QPalette *	palette (Palette type=SystemPalette) const

virtual const QFont *	font (Font type=SystemFont) const

virtual QVariant	themeHint (ThemeHint hint) const

virtual QPixmap	standardPixmap (StandardPixmap sp, const QSizeF &size) const

virtual QIcon	fileIcon (const QFileInfo &fileInfo, QPlatformTheme::IconOptions iconOptions={ }) const
	Return an icon for fileInfo, observing iconOptions.

virtual QIconEngine *	createIconEngine (const QString &iconName) const
	Factory function for the QIconEngine used by QIcon::fromTheme().

virtual QString	standardButtonText (int button) const
	Returns the text of a standard button.

QString	name () const

Static Public Member Functions
static QVariant	defaultThemeHint (ThemeHint hint)

static QString	defaultStandardButtonText (int button)

static QString	removeMnemonics (const QString &original)

Protected Member Functions
	QPlatformTheme (QPlatformThemePrivate *priv)

Protected Attributes
QScopedPointer< QPlatformThemePrivate >	d_ptr

Friends
class	QPlatformThemeFactory

Detailed Description

The QPlatformTheme class allows customizing the UI based on themes.

Since: 5.0

\preliminary

See the init_platform function in qguiapplication.cpp for the complete platform initialization process.

Definition at line 42 of file qplatformtheme.h.

Member Enumeration Documentation

◆ DialogType

enum QPlatformTheme::DialogType

Enumerator
FileDialog
ColorDialog
FontDialog
MessageDialog

Definition at line 103 of file qplatformtheme.h.

◆ Font

enum QPlatformTheme::Font

Enumerator
SystemFont
MenuFont
MenuBarFont
MenuItemFont
MessageBoxFont
LabelFont
TipLabelFont
StatusBarFont
TitleBarFont
MdiSubWindowTitleFont
DockWidgetTitleFont
PushButtonFont
CheckBoxFont
RadioButtonFont
ToolButtonFont
ItemViewFont
ListViewFont
HeaderViewFont
ListBoxFont
ComboMenuItemFont
ComboLineEditFont
SmallFont
MiniFont
FixedFont
GroupBoxTitleFont
TabButtonFont
EditorFont
NFonts

Definition at line 134 of file qplatformtheme.h.

◆ IconOption

enum QPlatformTheme::IconOption

Enumerator
DontUseCustomDirectoryIcons

Definition at line 277 of file qplatformtheme.h.

◆ KeyboardSchemes

enum QPlatformTheme::KeyboardSchemes

Enumerator
WindowsKeyboardScheme
MacKeyboardScheme
X11KeyboardScheme
KdeKeyboardScheme
GnomeKeyboardScheme
CdeKeyboardScheme

Definition at line 253 of file qplatformtheme.h.

◆ Palette

enum QPlatformTheme::Palette

Enumerator
SystemPalette
ToolTipPalette
ToolButtonPalette
ButtonPalette
CheckBoxPalette
RadioButtonPalette
HeaderPalette
ComboBoxPalette
ItemViewPalette
MessageBoxLabelPelette
MessageBoxLabelPalette
TabBarPalette
LabelPalette
GroupBoxPalette
MenuPalette
MenuBarPalette
TextEditPalette
TextLineEditPalette
NPalettes

Definition at line 111 of file qplatformtheme.h.

◆ StandardPixmap

enum QPlatformTheme::StandardPixmap

Enumerator
TitleBarMenuButton
TitleBarMinButton
TitleBarMaxButton
TitleBarCloseButton
TitleBarNormalButton
TitleBarShadeButton
TitleBarUnshadeButton
TitleBarContextHelpButton
DockWidgetCloseButton
MessageBoxInformation
MessageBoxWarning
MessageBoxCritical
MessageBoxQuestion
DesktopIcon
TrashIcon
ComputerIcon
DriveFDIcon
DriveHDIcon
DriveCDIcon
DriveDVDIcon
DriveNetIcon
DirOpenIcon
DirClosedIcon
DirLinkIcon
DirLinkOpenIcon
FileIcon
FileLinkIcon
ToolBarHorizontalExtensionButton
ToolBarVerticalExtensionButton
FileDialogStart
FileDialogEnd
FileDialogToParent
FileDialogNewFolder
FileDialogDetailedView
FileDialogInfoView
FileDialogContentsView
FileDialogListView
FileDialogBack
DirIcon
DialogOkButton
DialogCancelButton
DialogHelpButton
DialogOpenButton
DialogSaveButton
DialogCloseButton
DialogApplyButton
DialogResetButton
DialogDiscardButton
DialogYesButton
DialogNoButton
ArrowUp
ArrowDown
ArrowLeft
ArrowRight
ArrowBack
ArrowForward
DirHomeIcon
CommandLink
VistaShield
BrowserReload
BrowserStop
MediaPlay
MediaStop
MediaPause
MediaSkipForward
MediaSkipBackward
MediaSeekForward
MediaSeekBackward
MediaVolume
MediaVolumeMuted
LineEditClearButton
DialogYesToAllButton
DialogNoToAllButton
DialogSaveAllButton
DialogAbortButton
DialogRetryButton
DialogIgnoreButton
RestoreDefaultsButton
TabCloseButton
NStandardPixmap
CustomBase

Definition at line 166 of file qplatformtheme.h.

◆ ThemeHint

enum QPlatformTheme::ThemeHint

This enum describes the available theme hints.

\value CursorFlashTime (int) Cursor flash time in ms, overriding QPlatformIntegration::styleHint.

\value KeyboardInputInterval (int) Keyboard input interval in ms, overriding QPlatformIntegration::styleHint.

\value MouseDoubleClickInterval (int) Mouse double click interval in ms, overriding QPlatformIntegration::styleHint.

\value MouseDoubleClickDistance (int) The maximum distance in logical pixels which the mouse can travel between clicks in order for the click sequence to be handled as a double click. The default value is 5 logical pixels.

\value MousePressAndHoldInterval (int) Mouse press and hold interval in ms, overriding QPlatformIntegration::styleHint.

\value StartDragDistance (int) Start drag distance, overriding QPlatformIntegration::styleHint.

\value StartDragTime (int) Start drag time in ms, overriding QPlatformIntegration::styleHint.

\value WheelScrollLines (int) The number of lines to scroll a widget, when the mouse wheel is rotated. The default value is 3.

See also: QApplication::wheelScrollLines()

\value KeyboardAutoRepeatRate (int) Keyboard auto repeat rate, overriding QPlatformIntegration::styleHint.

\value PasswordMaskDelay (int) Pass word mask delay in ms, overriding QPlatformIntegration::styleHint.

\value StartDragVelocity (int) Velocity of a drag, overriding QPlatformIntegration::styleHint.

\value TextCursorWidth (int) Determines the width of the text cursor.

\value DropShadow (bool) Determines whether the drop shadow effect for tooltips or whatsthis is enabled.

\value MaximumScrollBarDragDistance (int) Determines the value returned by QStyle::pixelMetric(PM_MaximumDragDistance)

\value ToolButtonStyle (int) A value representing a Qt::ToolButtonStyle.

\value ToolBarIconSize Icon size for tool bars.

\value SystemIconThemeName (QString) Name of the icon theme.

\value SystemIconFallbackThemeName (QString) Name of the fallback icon theme.

\value IconThemeSearchPaths (QStringList) Search paths for icons.

\value ItemViewActivateItemOnSingleClick (bool) Activate items by single click.

\value StyleNames (QStringList) A list of preferred style names.

\value WindowAutoPlacement (bool) A boolean value indicating whether Windows (particularly dialogs) are placed by the system (see _NET_WM_FULL_PLACEMENT in X11).

\value DialogButtonBoxLayout (int) An integer representing a QDialogButtonBox::ButtonLayout value.

\value DialogButtonBoxButtonsHaveIcons (bool) A boolean value indicating whether the buttons of a QDialogButtonBox should have icons.

\value UseFullScreenForPopupMenu (bool) Pop menus can cover the full screen including task bar.

\value KeyboardScheme (int) An integer value (enum KeyboardSchemes) specifying the keyboard scheme.

\value UiEffects (int) A flag value consisting of UiEffect values specifying the enabled UI animations.

\value SpellCheckUnderlineStyle (int) A QTextCharFormat::UnderlineStyle specifying the underline style used misspelled words when spell checking.

\value TabFocusBehavior (int) A Qt::TabFocusBehavior specifying the behavior of focus change when tab key was pressed. This enum value was added in Qt 5.5.

\value DialogSnapToDefaultButton (bool) Whether the mouse should snap to the default button when a dialog becomes visible.

\value ContextMenuOnMouseRelease (bool) Whether the context menu should be shown on mouse release.

\value TouchDoubleTapDistance (int) The maximum distance in logical pixels which a touchpoint can travel between taps in order for the tap sequence to be handled as a double tap. The default value is double the MouseDoubleClickDistance, or 10 logical pixels if that is not specified.

\value ShowShortcutsInContextMenus (bool) Whether to display shortcut key sequences in context menus.

\value InteractiveResizeAcrossScreens (bool) Whether using the whole virtual geometry of all the screens as basis for the resize. This enum value has been added in Qt 6.2.

\value ShowDirectoriesFirst (bool) Whether directories should be shown first (before files) in file dialogs. This enum value was added in Qt 6.3.

\value PreselectFirstFileInDirectory (bool) Whether the first file in a directory should be automatically selected when a file dialog opens. This enum value was added in Qt 6.3.

\value ButtonPressKeys (QList<Qt::Key>) A list of keys that can be used to press buttons via keyboard input.

\value SetFocusOnTouchRelease (bool) Whether focus objects (line edits etc) should receive input focus after a touch/mouse release. This enum value has been added in Qt 6.5.

\value MouseCursorTheme (QString) Name of the mouse cursor theme. This enum value has been added in Qt 6.5.

\value MouseCursorSize (QSize) Size of the mouse cursor. This enum value has been added in Qt 6.5.

See also: themeHint(), QStyle::pixelMetric()

Enumerator
CursorFlashTime
KeyboardInputInterval
MouseDoubleClickInterval
StartDragDistance
StartDragTime
KeyboardAutoRepeatRate
PasswordMaskDelay
StartDragVelocity
TextCursorWidth
DropShadow
MaximumScrollBarDragDistance
ToolButtonStyle
ToolBarIconSize
ItemViewActivateItemOnSingleClick
SystemIconThemeName
SystemIconFallbackThemeName
IconThemeSearchPaths
StyleNames
WindowAutoPlacement
DialogButtonBoxLayout
DialogButtonBoxButtonsHaveIcons
UseFullScreenForPopupMenu
KeyboardScheme
UiEffects
SpellCheckUnderlineStyle
TabFocusBehavior
IconPixmapSizes
PasswordMaskCharacter
DialogSnapToDefaultButton
ContextMenuOnMouseRelease
MousePressAndHoldInterval
MouseDoubleClickDistance
WheelScrollLines
TouchDoubleTapDistance
ShowShortcutsInContextMenus
IconFallbackSearchPaths
MouseQuickSelectionThreshold
InteractiveResizeAcrossScreens
ShowDirectoriesFirst
PreselectFirstFileInDirectory
ButtonPressKeys
SetFocusOnTouchRelease
FlickStartDistance
FlickMaximumVelocity
FlickDeceleration
MenuBarFocusOnAltPressRelease
MouseCursorTheme
MouseCursorSize
UnderlineShortcut

Definition at line 50 of file qplatformtheme.h.

◆ UiEffect

enum QPlatformTheme::UiEffect

Enumerator
GeneralUiEffect
AnimateMenuUiEffect
FadeMenuUiEffect
AnimateComboUiEffect
AnimateTooltipUiEffect
FadeTooltipUiEffect
AnimateToolBoxUiEffect
HoverEffect

Definition at line 264 of file qplatformtheme.h.

Constructor & Destructor Documentation

◆ QPlatformTheme() [1/2]

QPlatformTheme::QPlatformTheme ( )

explicit

Definition at line 417 of file qplatformtheme.cpp.

Referenced by QXdgDesktopPortalTheme::QXdgDesktopPortalTheme().

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◆ ~QPlatformTheme()

QPlatformTheme::~QPlatformTheme ( )

virtual

Definition at line 427 of file qplatformtheme.cpp.

◆ QPlatformTheme() [2/2]

QPlatformTheme::QPlatformTheme ( QPlatformThemePrivate * priv )

explicitprotected

Definition at line 423 of file qplatformtheme.cpp.

Member Function Documentation

◆ colorScheme()

Qt::ColorScheme QPlatformTheme::colorScheme ( ) const

virtual

Reimplemented in QGnomeTheme, QAndroidPlatformTheme, QCocoaTheme, QIOSTheme, QWindowsTheme, QGtk3Theme, and QXdgDesktopPortalTheme.

Definition at line 444 of file qplatformtheme.cpp.

References Qt::Unknown.

Referenced by QGuiApplicationPrivate::colorScheme(), and isDarkMode().

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◆ createIconEngine()

QIconEngine * QPlatformTheme::createIconEngine ( const QString & iconName ) const

virtual

Factory function for the QIconEngine used by QIcon::fromTheme().

By default this function returns a QIconLoaderEngine, but subclasses can reimplement it to provide their own.

It is especially useful to benefit from some platform specific facilities or optimizations like an inter-process cache in systems mostly built with Qt.

Since: 5.1

Reimplemented in QXdgDesktopPortalTheme.

Definition at line 690 of file qplatformtheme.cpp.

◆ createPlatformDialogHelper()

QPlatformDialogHelper * QPlatformTheme::createPlatformDialogHelper ( DialogType type ) const

virtual

Reimplemented in QCocoaTheme, QAndroidPlatformTheme, QIOSTheme, QWindowsTheme, QGtk3Theme, and QXdgDesktopPortalTheme.

Definition at line 438 of file qplatformtheme.cpp.

References Q_UNUSED.

Referenced by QQuickLabsPlatformDialog::create(), and QDialogPrivate::platformHelper().

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◆ createPlatformMenu()

QPlatformMenu * QPlatformTheme::createPlatformMenu ( ) const

virtual

Reimplemented in QAndroidPlatformTheme, QCocoaTheme, QIOSTheme, QWindowsTheme, QGtk3Theme, and QXdgDesktopPortalTheme.

Definition at line 659 of file qplatformtheme.cpp.

Referenced by QQuickLabsPlatformMenu::create(), QPlatformMenuBar::createMenu(), QPlatformSystemTrayIcon::createMenu(), and QPlatformMenu::createSubMenu().

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◆ createPlatformMenuBar()

QPlatformMenuBar * QPlatformTheme::createPlatformMenuBar ( ) const

virtual

Reimplemented in QGenericUnixTheme, QGnomeTheme, QAndroidPlatformTheme, QCocoaTheme, QWindowsTheme, and QXdgDesktopPortalTheme.

Definition at line 664 of file qplatformtheme.cpp.

Referenced by QQuickLabsPlatformMenuBar::QQuickLabsPlatformMenuBar(), QMenuBarPrivate::init(), and QMenuBar::setNativeMenuBar().

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◆ createPlatformMenuItem()

QPlatformMenuItem * QPlatformTheme::createPlatformMenuItem ( ) const

virtual

Reimplemented in QAndroidPlatformTheme, QCocoaTheme, QIOSTheme, QWindowsTheme, QGtk3Theme, and QXdgDesktopPortalTheme.

Definition at line 654 of file qplatformtheme.cpp.

Referenced by QQuickLabsPlatformMenuItem::create(), and QPlatformMenu::createMenuItem().

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◆ createPlatformSystemTrayIcon()

QPlatformSystemTrayIcon * QPlatformTheme::createPlatformSystemTrayIcon ( ) const

virtual

Factory function for QSystemTrayIcon.

This function will return 0 if the platform integration does not support creating any system tray icon.

Reimplemented in QGenericUnixTheme, QGnomeTheme, QCocoaTheme, and QXdgDesktopPortalTheme.

Definition at line 674 of file qplatformtheme.cpp.

Referenced by QQuickLabsPlatformSystemTrayIcon::QQuickLabsPlatformSystemTrayIcon().

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◆ defaultStandardButtonText()

QString QPlatformTheme::defaultStandardButtonText ( int button )

static

Definition at line 771 of file qplatformtheme.cpp.

Referenced by QGtk3FileDialogHelper::QGtk3FileDialogHelper(), and standardButtonText().

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◆ defaultThemeHint()

QVariant QPlatformTheme::defaultThemeHint ( ThemeHint hint )

static

Definition at line 540 of file qplatformtheme.cpp.

References ButtonPressKeys, ContextMenuOnMouseRelease, CursorFlashTime, defaultThemeHint(), DialogButtonBoxButtonsHaveIcons, DialogButtonBoxLayout, DialogSnapToDefaultButton, dist(), DropShadow, FlickDeceleration, FlickMaximumVelocity, FlickStartDistance, QVariant::fromValue(), hint(), IconFallbackSearchPaths, IconPixmapSizes, IconThemeSearchPaths, InteractiveResizeAcrossScreens, ItemViewActivateItemOnSingleClick, Qt::Key_Select, Qt::Key_Space, KeyboardAutoRepeatRate, KeyboardInputInterval, KeyboardScheme, MaximumScrollBarDragDistance, MenuBarFocusOnAltPressRelease, MouseCursorSize, MouseCursorTheme, MouseDoubleClickDistance, MouseDoubleClickInterval, MousePressAndHoldInterval, MouseQuickSelectionThreshold, ok, PasswordMaskCharacter, PasswordMaskDelay, PreselectFirstFileInDirectory, qEnvironmentVariableIntValue(), SetFocusOnTouchRelease, ShowDirectoriesFirst, ShowShortcutsInContextMenus, SpellCheckUnderlineStyle, StartDragDistance, StartDragTime, StartDragVelocity, StyleNames, SystemIconFallbackThemeName, SystemIconThemeName, Qt::TabFocusAllControls, TabFocusBehavior, TextCursorWidth, QVariant::toInt(), ToolBarIconSize, Qt::ToolButtonIconOnly, ToolButtonStyle, TouchDoubleTapDistance, UiEffects, UnderlineShortcut, UseFullScreenForPopupMenu, QTextCharFormat::WaveUnderline, WheelScrollLines, WindowAutoPlacement, and WindowsKeyboardScheme.

Referenced by defaultThemeHint(), QPlatformIntegration::styleHint(), QCommonStyle::styleHint(), QQC2::QCommonStyle::styleHint(), themeableHint(), and themeHint().

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◆ fileIcon()

QIcon QPlatformTheme::fileIcon	(	const QFileInfo &	fileInfo,
		QPlatformTheme::IconOptions	iconOptions = `{ }`
	)		const

virtual

Return an icon for fileInfo, observing iconOptions.

This function is queried by QFileIconProvider and similar classes to obtain an icon for a file. If it does not return a non-null icon, fileIconPixmap() is queried for a specific size.