KIconLoader Class Reference

from PyKDE4.kdeui import *

Inherits: QObject

Detailed Description

Iconloader for KDE.

KIconLoader will load the current icon theme and all its base themes. Icons will be searched in any of these themes. Additionally, it caches icons and applies effects according to the user's preferences.

In KDE, it is encouraged to load icons by "Group". An icon group is a location on the screen where icons are being used. Standard groups are: Desktop, Toolbar, MainToolbar, Small and Panel. Each group has some centrally configured properties bound to it, including the icon size and effects. This makes it possible to offer a consistent icon look in all KDE applications.

The standard groups are defined below.

KIconLoader.Desktop: Icons in the iconview of konqueror, kdesktop and similar apps.

KIconLoader.Toolbar: Icons in toolbars.

KIconLoader.MainToolbar: Icons in the main toolbars.

KIconLoader.Small: Various small (typical 16x16) places: titlebars, listviews

and menu entries.

KIconLoader.Panel: Icons in kicker's panel

The icons are stored on disk in an icon theme or in a standalone directory. The icon theme directories contain multiple sizes and/or depths for the same icon. The iconloader will load the correct one based on the icon group and the current theme. Icon themes are stored globally in share/icons, or, application specific in share/apps/$appdir/icons.

The standalone directories contain just one version of an icon. The directories that are searched are: $appdir/pics and $appdir/toolbar. Icons in these directories can be loaded by using the special group "User".

Enumerations
Context	{ Any, Action, Application, Device, FileSystem, MimeType, Animation, Category, Emblem, Emote, International, Place, StatusIcon }
Group	{ NoGroup, Desktop, FirstGroup, Toolbar, MainToolbar, Small, Panel, Dialog, LastGroup, User }
MatchType	{ MatchExact, MatchBest }
States	{ DefaultState, ActiveState, DisabledState, LastState }
StdSizes	{ SizeSmall, SizeSmallMedium, SizeMedium, SizeLarge, SizeHuge, SizeEnormous }
Type	{ Fixed, Scalable, Threshold }
Signals
	iconLoaderSettingsChanged ()
Methods
	__init__ (self, QString appname=QString(), KStandardDirs dirs=0, QObject parent=0)
	__init__ (self, KComponentData componentData, QObject parent=0)
	addAppDir (self, QString appname)
	addExtraDesktopThemes (self)
	drawOverlays (self, QStringList overlays, QPixmap pixmap, KIconLoader.Group group, int state=KIconLoader.DefaultState)
bool	extraDesktopThemesAdded (self)
KIconEffect	iconEffect (self)
QString	iconPath (self, QString name, int group_or_size, bool canReturnNull=0)
QPixmap	loadIcon (self, QString name, KIconLoader.Group group, int size=0, int state=KIconLoader.DefaultState, QStringList overlays=QStringList(), QString path_store=0, bool canReturnNull=0)
QPixmap	loadMimeTypeIcon (self, QString iconName, KIconLoader.Group group, int size=0, int state=KIconLoader.DefaultState, QStringList overlays=QStringList(), QString path_store=0)
	newIconLoader (self)
QStringList	queryIconsByDir (self, QString iconsDir)
	reconfigure (self, QString _appname, KStandardDirs _dirs)
KIconTheme	theme (self)
Static Methods
KIconLoader	global_ ()
QPixmap	unknown ()

Signal Documentation

iconLoaderSettingsChanged ( )

Emitted by newIconLoader once the new settings have been loaded

Signal syntax:: QObject.connect(source, SIGNAL("iconLoaderSettingsChanged()"), target_slot)

Method Documentation

__init__	(	self,
		QString	appname=QString(),
		KStandardDirs	dirs=0,
		QObject	parent=0
	)

Constructs an iconloader.

Parameters:

	appname	Add the data directories of this application to the icon search path for the "User" group. The default argument adds the directories of the current application.
	dirs	the KStandardDirs object to use. If null the global one is used

Usually, you use the default iconloader, which can be accessed via KIconLoader.global(), so you hardly ever have to create an iconloader object yourself. That one is the current KComponentData's (typically KApplication's) iconloader.

__init__	(	self,
		KComponentData	componentData,
		QObject	parent=0
	)

Constructs an iconloader.

Parameters:

componentData

the KComponentData to use to create this icon loader.

addAppDir	(	self,
		QString	appname
	)

Adds appname to the list of application specific directories.

Parameters:

appname

The application name.

addExtraDesktopThemes ( self )

Adds all the default themes from other desktops at the end of the list of icon themes.

drawOverlays	(	self,
		QStringList	overlays,
		QPixmap	pixmap,
		KIconLoader.Group	group,
		int	state=KIconLoader.DefaultState
	)

Draws overlays on the specified pixmap, it takes the width and height of the pixmap into consideration

Parameters:

	overlays	to draw
	pixmap	to draw on

Since:: 4.7

bool extraDesktopThemesAdded ( self )

Returns if the default icon themes of other desktops have been added to the list of icon themes where icons are searched.

KIconEffect iconEffect ( self )

Returns a pointer to the KIconEffect object used by the icon loader.

Returns:: the KIconEffect.

QString iconPath	(	self,
		QString	name,
		int	group_or_size,
		bool	canReturnNull=0
	)

Returns the path of an icon.

Parameters:

	name	The name of the icon, without extension. If an absolute path is supplied for this parameter, iconPath will return it directly.
	group_or_size	If positive, search icons whose size is specified by the icon group group_or_size. If negative, search icons whose size is - group_or_size. See KIconLoader.Group and KIconLoader.StdSizes
	canReturnNull	Can return a null string? If not, a path to the "unknown" icon will be returned.

Returns:: the path of an icon, can be null or the "unknown" icon when not found, depending on canReturnNull.

QPixmap loadIcon	(	self,
		QString	name,
		KIconLoader.Group	group,
		int	size=0,
		int	state=KIconLoader.DefaultState,
		QStringList	overlays=QStringList(),
		QString	path_store=0,
		bool	canReturnNull=0
	)

Loads an icon. It will try very hard to find an icon which is suitable. If no exact match is found, a close match is searched. If neither an exact nor a close match is found, a null pixmap or the "unknown" pixmap is returned, depending on the value of the canReturnNull parameter.

Parameters:

	name	The name of the icon, without extension.
	group	The icon group. This will specify the size of and effects to be applied to the icon.
	size	If nonzero, this overrides the size specified by group. See KIconLoader.StdSizes.
	state	The icon state: DefaultState, ActiveState or DisabledState. Depending on the user's preferences, the iconloader may apply a visual effect to hint about its state.
	overlays	a list of emblem icons to overlay, by name. the emblem prefix is applied automatically to each name, e.g. "zip" becomes "emblem-zip"
	path_store	If not null, the path of the icon is stored here, if the icon was found. If the icon was not found path_store is unaltered even if the "unknown" pixmap was returned.
	canReturnNull	Can return a null pixmap? If false, the "unknown" pixmap is returned when no appropriate icon has been found. <em>Note:</em> a null pixmap can still be returned in the event of invalid parameters, such as empty names, negative sizes, and etc.

Returns:: the QPixmap. Can be null when not found, depending on

canReturnNull.

QPixmap loadMimeTypeIcon	(	self,
		QString	iconName,
		KIconLoader.Group	group,
		int	size=0,
		int	state=KIconLoader.DefaultState,
		QStringList	overlays=QStringList(),
		QString	path_store=0
	)

Loads an icon for a mimetype. This is basically like loadIcon except that extra desktop themes are loaded if necessary.

Parameters:

	iconName	The name of the icon, without extension, usually from KMimeType.
	group	The icon group. This will specify the size of and effects to be applied to the icon.
	size	If nonzero, this overrides the size specified by group. See KIconLoader.StdSizes.
	state	The icon state: DefaultState, ActiveState or DisabledState. Depending on the user's preferences, the iconloader may apply a visual effect to hint about its state.
	path_store	If not null, the path of the icon is stored here.
	overlays	a list of emblem icons to overlay, by name. the emblem prefix is applied automatically to each name, e.g. "zip" becomes "emblem-zip"

Returns:: the QPixmap. Can not be null, the "unknown" pixmap is returned when no appropriate icon has been found.

newIconLoader ( self )

Re-initialize the global icon loader

QStringList queryIconsByDir	(	self,
		QString	iconsDir
	)

Returns a list of all icons (*.png or *.xpm extension) in the given directory.

Parameters:

iconsDir

the directory to search in

Returns:: A QStringList containing the icon paths

reconfigure	(	self,
		QString	_appname,
		KStandardDirs	_dirs
	)

Called by KComponentData.newIconLoader to reconfigure the icon loader.

Parameters:

	_appname	the new application name
	_dirs	the new standard directories. If 0, the directories from KGlobal will be taken.

KIconTheme theme ( self )

Returns a pointer to the current theme. Can be used to query available and default sizes for groups.

Note:: The KIconTheme will change if reconfigure() is called and therefore it's not recommended to store the pointer anywhere.

Returns:: a pointer to the current theme. 0 if no theme set.

Static Method Documentation

KIconLoader global_ ( )

Returns the global icon loader initialized with the global KComponentData.

Returns:: global icon loader

QPixmap unknown ( )

Returns the unknown icon. An icon that is used when no other icon can be found.

Returns:: the unknown pixmap

Enumeration Documentation

Context

Defines the context of the icon.

Enumerator:

Any
Action
Application
Device
FileSystem
MimeType
Animation
Category
Emblem
Emote
International
Place
StatusIcon

Group

The group of the icon.

Enumerator:

NoGroup = -1
Desktop = 0
FirstGroup = 0
Toolbar
MainToolbar
Small
Panel
Dialog
LastGroup
User

MatchType

The type of a match.

Enumerator:

MatchExact
MatchBest

States

Defines the possible states of an icon.

Enumerator:

DefaultState
ActiveState
DisabledState
LastState

StdSizes

These are the standard sizes for icons.

Enumerator:

SizeSmall = 16
SizeSmallMedium = 22
SizeMedium = 32
SizeLarge = 48
SizeHuge = 64
SizeEnormous = 128

Type

The type of the icon.

Enumerator:

Fixed
Scalable
Threshold

KIconLoader Class Reference

Detailed Description

Enumerations

Signals

Methods

Static Methods

Signal Documentation

Method Documentation

Static Method Documentation

Enumeration Documentation

Modules