class QIcon

The QIcon class provides scalable icons in different modes and states. More…

Synopsis

Methods

• def __init__()

• def actualSize()

• def addFile()

• def addPixmap()

• def availableSizes()

• def cacheKey()

• def isMask()

• def isNull()

• def name()

• def paint()

• def pixmap()

• def setIsMask()

• def swap()

Static functions

• def fallbackSearchPaths()

• def fallbackThemeName()

• def fromTheme()

• def hasThemeIcon()

• def setFallbackSearchPaths()

• def setFallbackThemeName()

• def setThemeName()

• def setThemeSearchPaths()

• def themeName()

• def themeSearchPaths()

Note

This documentation may contain snippets that were automatically translated from C++ to Python. We always welcome contributions to the snippet translation. If you see an issue with the translation, you can also let us know by creating a ticket on https:/bugreports.qt.io/projects/PYSIDE

Detailed Description

Warning

This section contains snippets that were automatically translated from C++ to Python and may contain errors.

A QIcon can generate smaller, larger, active, and disabled pixmaps from the set of pixmaps it is given. Such pixmaps are used by Qt UI components to show an icon representing a particular action.

Creating an icon from image files

The simplest way to construct a QIcon is to create one from one or several image files or resources. For example:

button = QToolButton()
button.setIcon(QIcon("open.png"))

QIcon can store several images for different states, and Qt will select the image that is the closest match for the action’s current state.

openIcon = QIcon("open.png")
openIcon.addFile("open-disabled.png", QIcon.Disabled)

Qt will generate the required icon styles and sizes when needed, e.g. the pixmap for the Disabled state might be generated by graying out one of the provided pixmaps.

To clear the icon, simply set a null icon in its place:

button.setIcon(QIcon())

Use the supportedImageFormats() and supportedImageFormats() functions to retrieve a complete list of the supported file formats.

Creating an icon from a theme or icon library

The most convenient way to construct an icon is by using the fromTheme() factory function. Qt implements access to the native icon library on platforms that support the Freedesktop Icon Theme Specification . Since Qt 6.7, Qt also provides access to the native icon library on macOS, iOS, and Windows 10 and 11. On Android, Qt can access icons from the Material design system as long as the MaterialIcons-Regular font is available on the system, or bundled as a resource at :/qt-project.org/icons/MaterialIcons-Regular.ttf with the application.

undoicon = QIcon.fromTheme(QIcon.ThemeIcon.EditUndo)

Applications can use the same theming specification to provide their own icon library. See below for an example theme description and the corresponding directory structure for the image files. Icons from an application-provided theme take precedence over the native icon library.

Icon Engines

Internally, QIcon instantiates an icon engine backend to handle and render the icon images. The type of icon engine is determined by the first file or pixmap or theme added to a QIcon object. Additional files or pixmaps will then be handled by the same engine.

Icon engines differ in the way they handle and render icons. The default pixmap-based engine only deals with fixed images, while the QtSvg module provides an icon engine that can re-render the provided vector graphics files at the requested size for better quality. The theme icon engines will typically only provide images from native platform icon library, and ignore any added files or pixmaps.

In addition, it is possible to provide custom icon engines. This allows applications to customize every aspect of generated icons. With QIconEnginePlugin it is possible to register different icon engines for different file suffixes, making it possible for third parties to provide additional icon engines to those included with Qt.

Making Classes that Use QIcon

If you write your own widgets that have an option to set a small pixmap, consider allowing a QIcon to be set for that pixmap. The Qt class QToolButton is an example of such a widget.

Provide a method to set a QIcon , and paint the QIcon with paint , choosing the appropriate parameters based on the current state of your widget. For example:

def drawIcon(self, painter, rect):

    icon.paint(painter, rect, Qt.AlignCenter, isEnabled() ? QIcon.Normal
    super().__init__()
                                               isChecked() ? QIcon.On
    super().__init__()

When you retrieve a pixmap using pixmap(QSize, Mode, State), and no pixmap for this given size, mode and state has been added with addFile() or addPixmap() , then QIcon will generate one on the fly. This pixmap generation happens in a QIconEngine . The default engine scales pixmaps down if required, but never up, and it uses the current style to calculate a disabled appearance.

You might also make use of the Active mode, perhaps making your widget Active when the mouse is over the widget (see QWidget::enterEvent()), while the mouse is pressed pending the release that will activate the function, or when it is the currently selected item. If the widget can be toggled, the “On” mode might be used to draw a different icon.

Note

QIcon needs a QGuiApplication instance before the icon is created.

High DPI Icons

Icons that are provided by the native icon library are usually based on vector graphics, and will automatically be rendered in the appropriate resolution.

When providing your own image files via addFile() , then QIcon will use Qt’s "@nx" high DPI syntax . This is useful if you have your own custom directory structure and do not use follow Freedesktop Icon Theme Specification .

When providing an application theme, then you need to follow the Icon Theme Specification to specify which files to use for different resolutions. To make QIcon use the high DPI version of an image, add an additional entry to the appropriate index.theme file:

[Icon Theme]
Name=Test
Comment=Test Theme

Directories=32x32/actions,32x32@2/actions

[32x32/actions]
Size=32
Context=Actions
Type=Fixed

# High DPI version of the entry above.
[32x32@2/actions]
Size=32
Scale=2
Type=Fixed

Your icon theme directory would then look something like this:

├── 32x32
│   └── actions
│       └── appointment-new.png
├── 32x32@2
│   └── actions
│       └── appointment-new.png
└── index.theme

class Mode

This enum type describes the mode for which a pixmap is intended to be used. The currently defined modes are:

Constant	Description
QIcon.Normal	Display the pixmap when the user is not interacting with the icon, but the functionality represented by the icon is available.
QIcon.Disabled	Display the pixmap when the functionality represented by the icon is not available.
QIcon.Active	Display the pixmap when the functionality represented by the icon is available and the user is interacting with the icon, for example, moving the mouse over it or clicking it.
QIcon.Selected	Display the pixmap when the item represented by the icon is selected.

class State

This enum describes the state for which a pixmap is intended to be used. The state can be:

Constant	Description
QIcon.Off	Display the pixmap when the widget is in an “off” state
QIcon.On	Display the pixmap when the widget is in an “on” state

class ThemeIcon

This enum provides access to icons that are provided by most icon theme implementations.

Constant	Description
QIcon.ThemeIcon.AddressBookNew	The icon for the action to create a new address book.
QIcon.ThemeIcon.ApplicationExit	The icon for exiting an application.
QIcon.ThemeIcon.AppointmentNew	The icon for the action to create a new appointment.
QIcon.ThemeIcon.CallStart	The icon for initiating or accepting a call.
QIcon.ThemeIcon.CallStop	The icon for stopping a current call.
QIcon.ThemeIcon.ContactNew	The icon for the action to create a new contact.
QIcon.ThemeIcon.DocumentNew	The icon for the action to create a new document.
QIcon.ThemeIcon.DocumentOpen	The icon for the action to open a document.
QIcon.ThemeIcon.DocumentOpenRecent	The icon for the action to open a document that was recently opened.
QIcon.ThemeIcon.DocumentPageSetup	The icon for the page setup action.
QIcon.ThemeIcon.DocumentPrint	The icon for the print action.
QIcon.ThemeIcon.DocumentPrintPreview	The icon for the print preview action.
QIcon.ThemeIcon.DocumentProperties	The icon for the action to view the properties of a document.
QIcon.ThemeIcon.DocumentRevert	The icon for the action of reverting to a previous version of a document.
QIcon.ThemeIcon.DocumentSave	The icon for the save action.
QIcon.ThemeIcon.DocumentSaveAs	The icon for the save as action.
QIcon.ThemeIcon.DocumentSend	The icon for the send action.
QIcon.ThemeIcon.EditClear	The icon for the clear action.
QIcon.ThemeIcon.EditCopy	The icon for the copy action.
QIcon.ThemeIcon.EditCut	The icon for the cut action.
QIcon.ThemeIcon.EditDelete	The icon for the delete action.
QIcon.ThemeIcon.EditFind	The icon for the find action.
QIcon.ThemeIcon.EditPaste	The icon for the paste action.
QIcon.ThemeIcon.EditRedo	The icon for the redo action.
QIcon.ThemeIcon.EditSelectAll	The icon for the select all action.
QIcon.ThemeIcon.EditUndo	The icon for the undo action.
QIcon.ThemeIcon.FolderNew	The icon for creating a new folder.
QIcon.ThemeIcon.FormatIndentLess	The icon for the decrease indent formatting action.
QIcon.ThemeIcon.FormatIndentMore	The icon for the increase indent formatting action.
QIcon.ThemeIcon.FormatJustifyCenter	The icon for the center justification formatting action.
QIcon.ThemeIcon.FormatJustifyFill	The icon for the fill justification formatting action.
QIcon.ThemeIcon.FormatJustifyLeft	The icon for the left justification formatting action.
QIcon.ThemeIcon.FormatJustifyRight	The icon for the right justification action.
QIcon.ThemeIcon.FormatTextDirectionLtr	The icon for the left-to-right text formatting action.
QIcon.ThemeIcon.FormatTextDirectionRtl	The icon for the right-to-left formatting action.
QIcon.ThemeIcon.FormatTextBold	The icon for the bold text formatting action.
QIcon.ThemeIcon.FormatTextItalic	The icon for the italic text formatting action.
QIcon.ThemeIcon.FormatTextUnderline	The icon for the underlined text formatting action.
QIcon.ThemeIcon.FormatTextStrikethrough	The icon for the strikethrough text formatting action.
QIcon.ThemeIcon.GoDown	The icon for the go down in a list action.
QIcon.ThemeIcon.GoHome	The icon for the go to home location action.
QIcon.ThemeIcon.GoNext	The icon for the go to the next item in a list action.
QIcon.ThemeIcon.GoPrevious	The icon for the go to the previous item in a list action.
QIcon.ThemeIcon.GoUp	The icon for the go up in a list action.
QIcon.ThemeIcon.HelpAbout	The icon for the About item in the Help menu.
QIcon.ThemeIcon.HelpFaq	The icon for the FAQ item in the Help menu.
QIcon.ThemeIcon.InsertImage	The icon for the insert image action of an application.
QIcon.ThemeIcon.InsertLink	The icon for the insert link action of an application.
QIcon.ThemeIcon.InsertText	The icon for the insert text action of an application.
QIcon.ThemeIcon.ListAdd	The icon for the add to list action.
QIcon.ThemeIcon.ListRemove	The icon for the remove from list action.
QIcon.ThemeIcon.MailForward	The icon for the forward action.
QIcon.ThemeIcon.MailMarkImportant	The icon for the mark as important action.
QIcon.ThemeIcon.MailMarkRead	The icon for the mark as read action.
QIcon.ThemeIcon.MailMarkUnread	The icon for the mark as unread action.
QIcon.ThemeIcon.MailMessageNew	The icon for the compose new mail action.
QIcon.ThemeIcon.MailReplyAll	The icon for the reply to all action.
QIcon.ThemeIcon.MailReplySender	The icon for the reply to sender action.
QIcon.ThemeIcon.MailSend	The icon for the send action.
QIcon.ThemeIcon.MediaEject	The icon for the eject action of a media player or file manager.
QIcon.ThemeIcon.MediaPlaybackPause	The icon for the pause action of a media player.
QIcon.ThemeIcon.MediaPlaybackStart	The icon for the start playback action of a media player.
QIcon.ThemeIcon.MediaPlaybackStop	The icon for the stop action of a media player.
QIcon.ThemeIcon.MediaRecord	The icon for the record action of a media application.
QIcon.ThemeIcon.MediaSeekBackward	The icon for the seek backward action of a media player.
QIcon.ThemeIcon.MediaSeekForward	The icon for the seek forward action of a media player.
QIcon.ThemeIcon.MediaSkipBackward	The icon for the skip backward action of a media player.
QIcon.ThemeIcon.MediaSkipForward	The icon for the skip forward action of a media player.
QIcon.ThemeIcon.ObjectRotateLeft	The icon for the rotate left action performed on an object.
QIcon.ThemeIcon.ObjectRotateRight	The icon for the rotate right action performed on an object.
QIcon.ThemeIcon.ProcessStop	The icon for the stop action in applications with actions that may take a while to process, such as web page loading in a browser.
QIcon.ThemeIcon.SystemLockScreen	The icon for the lock screen action.
QIcon.ThemeIcon.SystemLogOut	The icon for the log out action.
QIcon.ThemeIcon.SystemSearch	The icon for the search action.
QIcon.ThemeIcon.SystemReboot	The icon for the reboot action.
QIcon.ThemeIcon.SystemShutdown	The icon for the shutdown action.
QIcon.ThemeIcon.ToolsCheckSpelling	The icon for the check spelling action.
QIcon.ThemeIcon.ViewFullscreen	The icon for the fullscreen action.
QIcon.ThemeIcon.ViewRefresh	The icon for the refresh action.
QIcon.ThemeIcon.ViewRestore	The icon for leaving the fullscreen view.
QIcon.ThemeIcon.WindowClose	The icon for the close window action.
QIcon.ThemeIcon.WindowNew	The icon for the new window action.
QIcon.ThemeIcon.ZoomFitBest	The icon for the best fit action.
QIcon.ThemeIcon.ZoomIn	The icon for the zoom in action.
QIcon.ThemeIcon.ZoomOut	The icon for the zoom out action.
QIcon.ThemeIcon.AudioCard	The icon for the audio rendering device.
QIcon.ThemeIcon.AudioInputMicrophone	The icon for the microphone audio input device.
QIcon.ThemeIcon.Battery	The icon for the system battery device.
QIcon.ThemeIcon.CameraPhoto	The icon for a digital still camera devices.
QIcon.ThemeIcon.CameraVideo	The icon for a video camera device.
QIcon.ThemeIcon.CameraWeb	The icon for a web camera device.
QIcon.ThemeIcon.Computer	The icon for the computing device as a whole.
QIcon.ThemeIcon.DriveHarddisk	The icon for hard disk drives.
QIcon.ThemeIcon.DriveOptical	The icon for optical media drives such as CD and DVD.
QIcon.ThemeIcon.InputGaming	The icon for the gaming input device.
QIcon.ThemeIcon.InputKeyboard	The icon for the keyboard input device.
QIcon.ThemeIcon.InputMouse	The icon for the mousing input device.
QIcon.ThemeIcon.InputTablet	The icon for graphics tablet input devices.
QIcon.ThemeIcon.MediaFlash	The icon for flash media, such as a memory stick.
QIcon.ThemeIcon.MediaOptical	The icon for physical optical media such as CD and DVD.
QIcon.ThemeIcon.MediaTape	The icon for generic physical tape media.
QIcon.ThemeIcon.MultimediaPlayer	The icon for generic multimedia playing devices.
QIcon.ThemeIcon.NetworkWired	The icon for wired network connections.
QIcon.ThemeIcon.NetworkWireless	The icon for wireless network connections.
QIcon.ThemeIcon.Phone	The icon for phone devices.
QIcon.ThemeIcon.Printer	The icon for a printer device.
QIcon.ThemeIcon.Scanner	The icon for a scanner device.
QIcon.ThemeIcon.VideoDisplay	The icon for the monitor that video gets displayed on.
QIcon.ThemeIcon.AppointmentMissed	The icon for when an appointment was missed.
QIcon.ThemeIcon.AppointmentSoon	The icon for when an appointment will occur soon.
QIcon.ThemeIcon.AudioVolumeHigh	The icon used to indicate high audio volume.
QIcon.ThemeIcon.AudioVolumeLow	The icon used to indicate low audio volume.
QIcon.ThemeIcon.AudioVolumeMedium	The icon used to indicate medium audio volume.
QIcon.ThemeIcon.AudioVolumeMuted	The icon used to indicate the muted state for audio playback.
QIcon.ThemeIcon.BatteryCaution	The icon used when the battery is below 40%.
QIcon.ThemeIcon.BatteryLow	The icon used when the battery is below 20%.
QIcon.ThemeIcon.DialogError	The icon used when a dialog is opened to explain an error condition to the user.
QIcon.ThemeIcon.DialogInformation	The icon used when a dialog is opened to give information to the user that may be pertinent to the requested action.
QIcon.ThemeIcon.DialogPassword	The icon used when a dialog requesting the authentication credentials for a user is opened.
QIcon.ThemeIcon.DialogQuestion	The icon used when a dialog is opened to ask a simple question to the user.
QIcon.ThemeIcon.DialogWarning	The icon used when a dialog is opened to warn the user of impending issues with the requested action.
QIcon.ThemeIcon.FolderDragAccept	The icon used for a folder while an acceptable object is being dragged onto it.
QIcon.ThemeIcon.FolderOpen	The icon used for folders, while their contents are being displayed within the same window.
QIcon.ThemeIcon.FolderVisiting	The icon used for folders, while their contents are being displayed in another window.
QIcon.ThemeIcon.ImageLoading	The icon used while another image is being loaded.
QIcon.ThemeIcon.ImageMissing	The icon used when another image could not be loaded.
QIcon.ThemeIcon.MailAttachment	The icon for a message that contains attachments.
QIcon.ThemeIcon.MailUnread	The icon for an unread message.
QIcon.ThemeIcon.MailRead	The icon for a read message.
QIcon.ThemeIcon.MailReplied	The icon for a message that has been replied to.
QIcon.ThemeIcon.MediaPlaylistRepeat	The icon for the repeat mode of a media player.
QIcon.ThemeIcon.MediaPlaylistShuffle	The icon for the shuffle mode of a media player.
QIcon.ThemeIcon.NetworkOffline	The icon used to indicate that the device is not connected to the network.
QIcon.ThemeIcon.PrinterPrinting	The icon used while a print job is successfully being spooled to a printing device.
QIcon.ThemeIcon.SecurityHigh	The icon used to indicate that the security level of an item is known to be high.
QIcon.ThemeIcon.SecurityLow	The icon used to indicate that the security level of an item is known to be low.
QIcon.ThemeIcon.SoftwareUpdateAvailable	The icon used to indicate that an update is available.
QIcon.ThemeIcon.SoftwareUpdateUrgent	The icon used to indicate that an urgent update is available.
QIcon.ThemeIcon.SyncError	The icon used when an error occurs while attempting to synchronize data across devices.
QIcon.ThemeIcon.SyncSynchronizing	The icon used while data is successfully synchronizing across devices.
QIcon.ThemeIcon.UserAvailable	The icon used to indicate that a user is available.
QIcon.ThemeIcon.UserOffline	The icon used to indicate that a user is not available.
QIcon.ThemeIcon.WeatherClear	The icon used to indicate that the sky is clear.
QIcon.ThemeIcon.WeatherClearNight	The icon used to indicate that the sky is clear during the night.
QIcon.ThemeIcon.WeatherFewClouds	The icon used to indicate that the sky is partly cloudy.
QIcon.ThemeIcon.WeatherFewCloudsNight	The icon used to indicate that the sky is partly cloudy during the night.
QIcon.ThemeIcon.WeatherFog	The icon used to indicate that the weather is foggy.
QIcon.ThemeIcon.WeatherShowers	The icon used to indicate that rain showers are occurring.
QIcon.ThemeIcon.WeatherSnow	The icon used to indicate that snow is falling.
QIcon.ThemeIcon.WeatherStorm	The icon used to indicate that the weather is stormy.

See also

QIcon#Creating an icon from a theme or icon library fromTheme()

Added in version 6.7.

__init__()

Constructs a null icon.

__init__(engine)

Parameters:

engine – QIconEngine

Creates an icon with a specific icon engine. The icon takes ownership of the engine.

__init__(other)

Parameters:

other – QIcon

Constructs a copy of other. This is very fast.

__init__(pixmap)

Parameters:

pixmap – QPixmap

Constructs an icon from a pixmap.

__init__(fileName)

Parameters:

fileName – str

Constructs an icon from the file with the given fileName. The file will be loaded on demand.

If fileName contains a relative path (e.g. the filename only) the relevant file must be found relative to the runtime working directory.

The file name can refer to an actual file on disk or to one of the application’s embedded resources. See the Resource System overview for details on how to embed images and other resource files in the application’s executable.

Use the supportedImageFormats() and supportedImageFormats() functions to retrieve a complete list of the supported file formats.

actualSize(size[, mode=QIcon.Mode.Normal[, state=QIcon.State.Off]])

Parameters:

• size – QSize

• mode – Mode

• state – State

Return type:

QSize

Returns the actual size of the icon for the requested size, mode, and state. The result might be smaller than requested, but never larger. The returned size is in device-independent pixels (This is relevant for high-dpi pixmaps.)

See also

pixmap() paint()

actualSize(window, size[, mode=QIcon.Mode.Normal[, state=QIcon.State.Off]])

Parameters:

• window – QWindow

• size – QSize

• mode – Mode

• state – State

Return type:

QSize

Note

This function is deprecated.

Use actualSize (size) instead.

Returns the actual size of the icon for the requested window size, mode, and state.

The pixmap can be smaller than the requested size. The returned size is in device-independent pixels (This is relevant for high-dpi pixmaps.)

See also

actualSize() pixmap() paint()

addFile(fileName[, size=QSize()[, mode=QIcon.Mode.Normal[, state=QIcon.State.Off]]])

Parameters:

• fileName – str

• size – QSize

• mode – Mode

• state – State

Adds an image from the file with the given fileName to the icon, as a specialization for size, mode and state. The file will be loaded on demand. Note: custom icon engines are free to ignore additionally added pixmaps.

If fileName contains a relative path (e.g. the filename only) the relevant file must be found relative to the runtime working directory.

The file name can refer to an actual file on disk or to one of the application’s embedded resources. See the Resource System overview for details on how to embed images and other resource files in the application’s executable.

Use the supportedImageFormats() and supportedImageFormats() functions to retrieve a complete list of the supported file formats.

If a high resolution version of the image exists (identified by the suffix @2x on the base name), it is automatically loaded and added with the device pixel ratio set to a value of 2. This can be disabled by setting the environment variable QT_HIGHDPI_DISABLE_2X_IMAGE_LOADING (see QImageReader ).

Note

When you add a non-empty filename to a QIcon , the icon becomes non-null, even if the file doesn’t exist or points to a corrupt file.

See also

addPixmap() devicePixelRatio()

addPixmap(path)

Parameters:

path – PyPathLike

addPixmap(pixmap[, mode=QIcon.Mode.Normal[, state=QIcon.State.Off]])

Parameters:

• pixmap – QPixmap

• mode – Mode

• state – State

Adds pixmap to the icon, as a specialization for mode and state.

Custom icon engines are free to ignore additionally added pixmaps.

See also

addFile()

availableSizes([mode=QIcon.Mode.Normal[, state=QIcon.State.Off]])

Parameters:

• mode – Mode

• state – State

Return type:

.list of QSize

Returns a list of available icon sizes for the specified mode and state.

cacheKey()

Return type:

int

Returns a number that identifies the contents of this QIcon object. Distinct QIcon objects can have the same key if they refer to the same contents.

The cacheKey() will change when the icon is altered via addPixmap() or addFile() .

Cache keys are mostly useful in conjunction with caching.

See also

cacheKey()

static fallbackSearchPaths()

Return type:

list of strings

Returns the fallback search paths for icons.

The fallback search paths are consulted for standalone icon files if the current icon theme or fallback icon theme do not provide results for an icon lookup.

If not set, the fallback search paths will be defined by the platform.

See also

setFallbackSearchPaths() themeSearchPaths()

static fallbackThemeName()

Return type:

str

Returns the name of the fallback icon theme.

If not set, the fallback icon theme will be defined by the platform.

Note

Platform fallback icon themes are only implemented on Freedesktop based systems at the moment, and the icon theme depends on your desktop settings.

See also

setFallbackThemeName() themeName()

static fromTheme(icon)

Parameters:

icon – ThemeIcon

Return type:

QIcon

static fromTheme(name)

Parameters:

name – str

Return type:

QIcon

Warning

This section contains snippets that were automatically translated from C++ to Python and may contain errors.

Returns the QIcon corresponding to name in the current icon theme .

If the current theme does not provide an icon for name, the fallback icon theme is consulted, before falling back to looking up standalone icon files in the fallback icon search path . Finally, the platform’s native icon library is consulted.

To fetch an icon from the current icon theme:

undoicon = QIcon.fromTheme(QIcon.ThemeIcon.EditUndo)

If an icon theme has not been explicitly set via setThemeName() a platform defined icon theme will be used.

See also

themeName() fallbackThemeName() setThemeName() themeSearchPaths() fallbackSearchPaths() Freedesktop Icon Naming Specification

static fromTheme(icon, fallback)

Parameters:

• icon – ThemeIcon

• fallback – QIcon

Return type:

QIcon

static fromTheme(name, fallback)

Parameters:

• name – str

• fallback – QIcon

Return type:

QIcon

Warning

This section contains snippets that were automatically translated from C++ to Python and may contain errors.

This is an overloaded function.

Returns the QIcon corresponding to name in the current icon theme .

If the current theme does not provide an icon for name, the fallback icon theme is consulted, before falling back to looking up standalone icon files in the fallback icon search path . Finally, the platform’s native icon library is consulted.

If no icon is found fallback is returned.

This is useful to provide a guaranteed fallback, regardless of whether the current set of icon themes and fallbacks paths support the requested icon.

For example:

undoicon = QIcon.fromTheme(QIcon.ThemeIcon.EditUndo, QIcon(":/undo.png"))

See also

fallbackThemeName() fallbackSearchPaths()

static hasThemeIcon(icon)

Parameters:

icon – ThemeIcon

Return type:

bool

This is an overloaded function.

Returns true if there is an icon available for icon in the current icon theme or any of the fallbacks, as described by fromTheme() , otherwise returns false.

See also

fromTheme()

static hasThemeIcon(name)

Parameters:

name – str

Return type:

bool

Returns true if there is an icon available for name in the current icon theme or any of the fallbacks, as described by fromTheme() , otherwise returns false.

See also

themeSearchPaths() fromTheme() setThemeName()

isMask()

Return type:

bool

Returns true if this icon has been marked as a mask image. Certain platforms render mask icons differently (for example, menu icons on macOS).

See also

setIsMask()

isNull()

Return type:

bool

Returns true if the icon is empty; otherwise returns false.

An icon is empty if it has neither a pixmap nor a filename.

Note: Even a non-null icon might not be able to create valid pixmaps, eg. if the file does not exist or cannot be read.

name()

Return type:

str

Returns the name used to create the icon, if available.

Depending on the way the icon was created, it may have an associated name. This is the case for icons created with fromTheme() .

See also

fromTheme() iconName()

paint(painter, rect[, alignment=Qt.AlignCenter[, mode=QIcon.Mode.Normal[, state=QIcon.State.Off]]])

Parameters:

• painter – QPainter

• rect – QRect

• alignment – Combination of AlignmentFlag

• mode – Mode

• state – State

Uses the painter to paint the icon with specified alignment, required mode, and state into the rectangle rect.

See also

actualSize() pixmap()

paint(painter, x, y, w, h[, alignment=Qt.AlignCenter[, mode=QIcon.Mode.Normal[, state=QIcon.State.Off]]])

Parameters:

• painter – QPainter

• x – int

• y – int

• w – int

• h – int

• alignment – Combination of AlignmentFlag

• mode – Mode

• state – State

This is an overloaded function.

Paints the icon into the rectangle QRect(x, y, w, h).

pixmap(size[, mode=QIcon.Mode.Normal[, state=QIcon.State.Off]])

Parameters:

• size – QSize

• mode – Mode

• state – State

Return type:

QPixmap

Returns a pixmap with the requested size, mode, and state, generating one if necessary. The pixmap might be smaller than requested, but never larger, unless the device-pixel ratio of the returned pixmap is larger than 1.

See also

actualSize() paint()

pixmap(extent[, mode=QIcon.Mode.Normal[, state=QIcon.State.Off]])

Parameters:

• extent – int

• mode – Mode

• state – State

Return type:

QPixmap

This is an overloaded function.

Returns a pixmap of size QSize(extent, extent). The pixmap might be smaller than requested, but never larger, unless the device-pixel ratio of the returned pixmap is larger than 1.

pixmap(window, size[, mode=QIcon.Mode.Normal[, state=QIcon.State.Off]])

Parameters:

• window – QWindow

• size – QSize

• mode – Mode

• state – State

Return type:

QPixmap

Note

This function is deprecated.

Use pixmap(size, devicePixelRatio) instead.

Returns a pixmap with the requested window size, mode, and state, generating one if necessary.

The pixmap can be smaller than the requested size. If window is on a high-dpi display the pixmap can be larger. In that case it will have a devicePixelRatio larger than 1.

See also

actualSize() paint()

pixmap(size, devicePixelRatio[, mode=QIcon.Mode.Normal[, state=QIcon.State.Off]])

Parameters:

• size – QSize

• devicePixelRatio – float

• mode – Mode

• state – State

Return type:

QPixmap

This is an overloaded function.

Returns a pixmap with the requested size, devicePixelRatio, mode, and state, generating one with the given mode and state if necessary. The pixmap might be smaller than requested, but never larger, unless the device-pixel ratio of the returned pixmap is larger than 1.

Note

Prior to Qt 6.8 this function wronlgy passed the device dependent pixmap size to scaledPixmap() , since Qt 6.8 it’s the device independent size (not scaled with the devicePixelRatio).

See also

actualSize() paint()

pixmap(w, h[, mode=QIcon.Mode.Normal[, state=QIcon.State.Off]])

Parameters:

• w – int

• h – int

• mode – Mode

• state – State

Return type:

QPixmap

This is an overloaded function.

Returns a pixmap of size QSize(w, h). The pixmap might be smaller than requested, but never larger, unless the device-pixel ratio of the returned pixmap is larger than 1.

static setFallbackSearchPaths(paths)

Parameters:

paths – list of strings

Warning

This section contains snippets that were automatically translated from C++ to Python and may contain errors.

Sets the fallback search paths for icons to paths.

The fallback search paths are consulted for standalone icon files if the current icon theme or fallback icon theme do not provide results for an icon lookup.

For example:

QIcon.setFallbackSearchPaths(QIcon.fallbackSearchPaths() << "my/search/path")

See also

fallbackSearchPaths() setThemeSearchPaths()

static setFallbackThemeName(name)

Parameters:

name – str

Sets the fallback icon theme to name.

The fallback icon theme is consulted for icons not provided by the current icon theme , or if the current icon theme does not exist.

The name should correspond to theme in the same format as documented by setThemeName() , and will be looked up in themeSearchPaths() .

Note

Fallback icon themes should be set before creating QGuiApplication , to ensure correct initialization.

See also

fallbackThemeName() themeSearchPaths() themeName()

setIsMask(isMask)

Parameters:

isMask – bool

Indicate that this icon is a mask image(boolean isMask), and hence can potentially be modified based on where it’s displayed.

See also

isMask()

static setThemeName(path)

Parameters:

path – str

Sets the current icon theme to name.

The theme will be will be looked up in themeSearchPaths() .

At the moment the only supported icon theme format is the Freedesktop Icon Theme Specification . The name should correspond to a directory name in the themeSearchPath() containing an index.theme file describing its contents.

See also

themeSearchPaths() themeName() Freedesktop Icon Theme Specification

static setThemeSearchPaths(searchpath)

Parameters:

searchpath – list of strings

Sets the search paths for icon themes to paths.

The content of paths should follow the theme format documented by setThemeName() .

See also

themeSearchPaths() fromTheme() setThemeName()

swap(other)

Parameters:

other – QIcon

Swaps icon other with this icon. This operation is very fast and never fails.

static themeName()

Return type:

str

Returns the name of the current icon theme.

If not set, the current icon theme will be defined by the platform.

Note

Platform icon themes are only implemented on Freedesktop based systems at the moment, and the icon theme depends on your desktop settings.

See also

setThemeName() themeSearchPaths() fromTheme() hasThemeIcon()

static themeSearchPaths()

Return type:

list of strings

Returns the search paths for icon themes.

The default search paths will be defined by the platform. All platforms will also have the resource directory :\icons as a fallback.

See also

setThemeSearchPaths() fromTheme() setThemeName()