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/*
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*
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* This file is part of the KDE project, module tdecore.
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* Copyright (C) 2000 Geert Jansen <jansen@kde.org>
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* Antonio Larrosa <larrosa@kde.org>
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*
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* This is free software; it comes under the GNU Library General
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* Public License, version 2. See the file "COPYING.LIB" for the
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* exact licensing terms.
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*/
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#ifndef __TDEIconLoader_h_Included__
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#define __TDEIconLoader_h_Included__
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#include <tqstring.h>
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#include <tqpixmap.h>
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#include <tqiconset.h>
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// Grmbl, X headers.....
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#ifdef Status
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#define TDEIconLoaderXStatus Status
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#undef Status
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#endif
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#include <tqmovie.h>
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#ifdef TDEIconLoaderXStatus
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#define Status int
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#undef TDEIconLoaderXStatus
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#endif
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#include <tdeglobal.h>
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#include <kinstance.h>
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#include <kicontheme.h>
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struct TDEIconGroup;
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class TDEIconThemeNode;
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class TDEConfig;
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struct TDEIconLoaderPrivate;
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class TDEStandardDirs;
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class TDEIconEffect;
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/**
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* Iconloader for KDE.
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*
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* TDEIconLoader will load the current icon theme and all its base themes.
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* Icons will be searched in any of these themes. Additionally, it caches
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* icons and applies effects according the the user's preferences.
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*
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* In KDE, it is encouraged to load icons by "Group". An icon group is a
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* location on the screen where icons are being used. Standard groups are:
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* Desktop, Toolbar, MainToolbar, Small and Panel. Each group has some
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* centrally configured properties bound to it, including the icon size
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* and effects. This makes it possible to offer a consistent icon look in
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* all KDE applications.
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*
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* The standard groups are defined below.
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*
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* @li TDEIcon::Desktop: Icons in the iconview of konqueror, kdesktop and similar apps.
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* @li TDEIcon::Toolbar: Icons in toolbars.
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* @li TDEIcon::MainToolbar: Icons in the main toolbars.
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* @li TDEIcon::Small: Various small (typical 16x16) places: titlebars, listviews
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* and menu entries.
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* @li TDEIcon::Panel: Icons in kicker's panel
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*
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* The icons are stored on disk in an icon theme or in a standalone
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* directory. The icon theme directories contain multiple sizes and/or
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* depths for the same icon. The iconloader will load the correct one based
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* on the icon group and the current theme. Icon themes are stored globally
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* in share/icons, or, application specific in share/apps/$appdir/icons.
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*
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* The standalone directories contain just one version of an icon. The
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* directories that are searched are: $appdir/pics and $appdir/toolbar.
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* Icons in these directories can be loaded by using the special group
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* "User".
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*
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*/
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class TDECORE_EXPORT TDEIconLoader
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{
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public:
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/**
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* Constructs an iconloader.
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* @param appname Add the data directories of this application to the
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* icon search path for the "User" group. The default argument adds the
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* directories of the current application.
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* @param dirs the TDEStandardDirs object to use. If null the global one is used
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*
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* Usually, you use the default iconloader, which can be accessed via
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* TDEGlobal::iconLoader(), so you hardly ever have to create an
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* iconloader object yourself. That one is the current TDEInstance's
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* (typically TDEApplication's) iconloader.
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* @see TDEGlobal::iconLoader()
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* @see TDEInstance::iconLoader()
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*/
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TDEIconLoader(const TQString& appname=TQString::null, TDEStandardDirs *dirs = 0);
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/**
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* Cleanup
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*/
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~TDEIconLoader();
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/**
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* Adds @p appname to the list of application specific directories.
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* @param appname The application name.
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*/
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void addAppDir(const TQString& appname);
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/**
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* Loads an icon. It will try very hard to find an icon which is
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* suitable. If no exact match is found, a close match is searched.
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* If neither an exact nor a close match is found, a null pixmap or
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* the "unknown" pixmap is returned, depending on the value of the
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* @p canReturnNull parameter.
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*
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* @param name The name of the icon, without extension.
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* @param group The icon group. This will specify the size of and effects to
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* be applied to the icon.
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* @param size If nonzero, this overrides the size specified by @p group.
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* See TDEIcon::StdSizes.
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* @param state The icon state: @p DefaultState, @p ActiveState or
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* @p DisabledState. Depending on the user's preferences, the iconloader
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* may apply a visual effect to hint about its state.
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* @param path_store If not null, the path of the icon is stored here.
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* @param canReturnNull Can return a null pixmap? If false, the
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* "unknown" pixmap is returned when no appropriate icon has been found.
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* @return the TQPixmap. Can be null when not found, depending on
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* @p canReturnNull.
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*/
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TQPixmap loadIcon(const TQString& name, TDEIcon::Group group, int size=0,
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int state=TDEIcon::DefaultState, TQString *path_store=0L,
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bool canReturnNull=false) const;
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/**
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* Creates an icon set, that will do on-demand loading of the icon.
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* Loading itself is done by calling loadIcon .
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*
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* @param name The name of the icon, without extension.
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* @param group The icon group. This will specify the size of and effects to
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* be applied to the icon.
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* @param size If nonzero, this overrides the size specified by @p group.
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* See TDEIcon::StdSizes.
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* @param canReturnNull Can return a null iconset? If false, iconset
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* containing the "unknown" pixmap is returned when no appropriate icon has
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* been found.
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* @param immediateExistenceCheck If true on-demand icon loading will be
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* disabled for canReturnNull and a null iconset may be returned immediately
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* @return the icon set. Can be null when not found, depending on
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* @p canReturnNull.
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* @since 3.5
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*/
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TQIconSet loadIconSet(const TQString& name, TDEIcon::Group group, int size,
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bool canReturnNull, bool immediateExistenceCheck);
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// KDE4 merge as (const TQString&,TDEIcon::Group,int=0,bool=false,bool=true);
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/**
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* Creates an icon set, that will do on-demand loading of the icon.
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* Loading itself is done by calling loadIcon .
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*
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* @param name The name of the icon, without extension.
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* @param group The icon group. This will specify the size of and effects to
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* be applied to the icon.
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* @param size If nonzero, this overrides the size specified by @p group.
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* See TDEIcon::StdSizes.
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* @param canReturnNull Can return a null iconset? If false, iconset
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* containing the "unknown" pixmap is returned when no appropriate icon has
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* been found.
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* @return the icon set. Can be null when not found, depending on
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* @p canReturnNull.
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* @since 3.1
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*/
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TQIconSet loadIconSet(const TQString& name, TDEIcon::Group group, int size,
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bool canReturnNull);
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// KDE4 merge as (const TQString&,TDEIcon::Group,int=0,bool=false,bool=true);
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/**
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* Creates an icon set, that will do on-demand loading of the icon.
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* Loading itself is done by calling loadIcon .
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*
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* @param name The name of the icon, without extension.
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* @param group The icon group. This will specify the size of and effects to
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* be applied to the icon.
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* @param size If nonzero, this overrides the size specified by @p group.
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* See TDEIcon::StdSizes.
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* @return the icon set. Can be null when not found
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*/
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TQIconSet loadIconSet(const TQString& name, TDEIcon::Group group, int size=0);
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/**
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* Returns the path of an icon.
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* @param name The name of the icon, without extension. If an absolute
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* path is supplied for this parameter, iconPath will return it
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* directly.
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* @param group_or_size If positive, search icons whose size is
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* specified by the icon group @p group_or_size. If negative, search
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* icons whose size is - @p group_or_size.
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* See TDEIcon::Group and TDEIcon::StdSizes
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* @param canReturnNull Can return a null string? If not, a path to the
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* "unknown" icon will be returned.
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* @return the path of an icon, can be null or the "unknown" icon when
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* not found, depending on @p canReturnNull.
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*/
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TQString iconPath(const TQString& name, int group_or_size,
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bool canReturnNull=false) const;
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/**
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* Loads an animated icon.
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* @param name The name of the icon.
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* @param group The icon group. See loadIcon().
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* @param size Override the default size for @p group.
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* See TDEIcon::StdSizes.
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* @return A TQMovie object. Can be null if not found.
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*/
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TQMovie loadMovie(const TQString& name, TDEIcon::Group group, int size=0) const;
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/**
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* Returns the path to an animated icon.
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* @param name The name of the icon.
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* @param group The icon group. See loadIcon().
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* @param size Override the default size for @p group.
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* See TDEIcon::StdSizes.
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* @return the full path to the movie, ready to be passed to QMovie's constructor.
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* Empty string if not found.
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*/
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TQString moviePath(const TQString& name, TDEIcon::Group group, int size=0) const;
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/**
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* Loads an animated icon as a series of still frames. If you want to load
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* a .mng animation as TQMovie instead, please use loadMovie() instead.
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* @param name The name of the icon.
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* @param group The icon group. See loadIcon().
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* @param size Override the default size for @p group.
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* See TDEIcon::StdSizes.
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* @return A TQStringList containing the absolute path of all the frames
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* making up the animation.
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*/
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TQStringList loadAnimated(const TQString& name, TDEIcon::Group group, int size=0) const;
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/**
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* Queries all available icons for a specific group, having a specific
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* context.
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* @param group_or_size If positive, search icons whose size is
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* specified by the icon group @p group_or_size. If negative, search
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* icons whose size is - @p group_or_size.
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* See TDEIcon::Group and TDEIcon::StdSizes
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* @param context The icon context.
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* @return a list of all icons
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*/
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TQStringList queryIcons(int group_or_size, TDEIcon::Context context=TDEIcon::Any) const;
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/**
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* Queries all available icons for a specific context.
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* @param group_or_size The icon preferred group or size. If available
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* at this group or size, those icons will be returned, in other case,
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* icons of undefined size will be returned. Positive numbers are groups,
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* negative numbers are negated sizes. See TDEIcon::Group and
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* TDEIcon::StdSizes
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* @param context The icon context.
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* @return A TQStringList containing the icon names
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* available for that context
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*/
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TQStringList queryIconsByContext(int group_or_size,
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TDEIcon::Context context=TDEIcon::Any) const;
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/**
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* @internal
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*/
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bool hasContext( TDEIcon::Context context ) const;
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/**
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* Returns a list of all icons (*.png or *.xpm extension) in the
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* given directory.
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* @param iconsDir the directory to search in
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* @return A TQStringList containing the icon paths
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* @since 3.1
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*/
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TQStringList queryIconsByDir( const TQString& iconsDir ) const;
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/**
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* Returns the current size of the group.
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* @param group the group to check.
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* @return the current size for an icon group.
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*/
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int currentSize(TDEIcon::Group group) const;
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/**
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* Returns a pointer to the current theme. Can be used to query
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* available and default sizes for groups.
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* @return a pointer to the current theme. 0 if no theme set.
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*/
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TDEIconTheme *theme() const;
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/**
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* Returns a pointer to the TDEIconEffect object used by the icon loader.
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* @return the TDEIconEffect.
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*/
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TDEIconEffect *iconEffect() const;
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/**
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* Called by TDEInstance::newIconLoader to reconfigure the icon loader.
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* @param _appname the new application name
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* @param _dirs the new standard directories. If 0, the directories
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* from TDEGlobal will be taken.
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*/
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void reconfigure( const TQString& _appname, TDEStandardDirs *_dirs );
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/**
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* Returns the unknown icon. An icon that is used when no other icon
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* can be found.
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* @return the unknown pixmap
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*/
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static TQPixmap unknown();
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/**
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* Checks whether the user wants to blend the icons with the background
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* using the alpha channel information for a given group.
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* @param group the group to check
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* @return true if alpha blending is desired
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* @obsolete
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*/
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bool alphaBlending( TDEIcon::Group group ) const;
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/**
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* Adds all the default themes from other desktops at the end of
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* the list of icon themes.
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* @since 3.1
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*/
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void addExtraDesktopThemes();
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/**
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* Returns if the default icon themes of other desktops have been added
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* to the list of icon themes where icons are searched.
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* @since 3.1
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*/
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bool extraDesktopThemesAdded() const;
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/**
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* Enables on-demand icon loading for QIconSets using TQIconFactory.
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* Icons loaded via loadIconSet() will be loaded as soon as they
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* need to be displayed, not earlier.
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*
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* Note that enabling or disabling this only affects loadIconSet()
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* calls after this setting is changed.
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*
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* The default is disabled, as the iconloader object must not be
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* destroyed before all those iconsets are destroyed.
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*
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* (Some broken applications use temporary TDEIconLoader objects).
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* Every TDEInstance 's iconloader has this feature enabled.
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*
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* @param enable true to enable delayed icon loading, false to disable
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* @see isDelayedIconSetLoadingEnabled()
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* @see QIconFactory
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* @since 3.1
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*/
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void enableDelayedIconSetLoading( bool enable );
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/**
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* Checks whether delayed loading for TQIconSet is enabled.
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* @return whether icons for QIconSets will be loaded on demand.
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* @see enableDelayedIconSetLoading()
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* @see QIconFactory
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* @since 3.1
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*/
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bool isDelayedIconSetLoadingEnabled() const;
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private:
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/**
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* @internal
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*/
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void init( const TQString& _appname, TDEStandardDirs *_dirs );
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/**
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* @internal
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* tries to find an icon with the name. It tries some extension and
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* match strategies
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*/
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TDEIcon findMatchingIcon(const TQString& name, int size) const;
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/**
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* @internal
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* Loads and caches an overlay.
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*/
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TQImage *loadOverlay(const TQString& name, int size) const;
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/**
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* @internal
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* Adds themes installed in the application's directory.
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**/
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void addAppThemes(const TQString& appname);
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/**
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* Adds all themes that are part of this node and the themes
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* below (the fallbacks of the theme) in the tree.
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* @internal
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*/
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void addBaseThemes(TDEIconThemeNode *node, const TQString &appname);
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/**
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* @internal
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* return the path for the unknown icon in that size
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* @since 3.1
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*/
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TQString unknownIconPath( int size ) const;
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/**
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* Checks if name ends in one of the supported icon formats (i.e. .png)
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* and returns the name without the extension if it does.
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*
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* Otherwise name is returned unchanged.
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*
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* Currently supported:
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* - png
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* - xpm
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* - svg (if libart is being used)
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* - svgz (if libart is being used)
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*
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* TODO: KDE 4 make public & static
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* @since 3.1
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*/
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TQString removeIconExtension(const TQString &name) const;
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/**
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* Same as removeIconExtension except it prints a debug message
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* if an extension is removed to help catch programming errors.
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*
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* @see findMatchingIcon()
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* @see iconPath()
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*
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* TODO: KDE 4 make static
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*/
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TQString removeIconExtensionInternal(const TQString &name) const;
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/**
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* Loads all the different sizes for an iconset.
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*/
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TQIconSet loadIconSetNonDelayed( const TQString& name, TDEIcon::Group group,
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int size, bool canReturnNull );
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// @internal the data object
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TDEIconLoaderPrivate *d;
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};
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/**
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* \relates TDEIconLoader
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* Load a desktop icon.
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*/
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TDECORE_EXPORT TQPixmap DesktopIcon(const TQString& name, int size=0,
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int state=TDEIcon::DefaultState,
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TDEInstance *instance=TDEGlobal::instance());
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/**
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* \relates TDEIconLoader
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* Load a desktop icon.
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*/
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TDECORE_EXPORT TQPixmap DesktopIcon(const TQString& name, TDEInstance *instance);
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/**
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* \relates TDEIconLoader
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* Load a desktop icon, and apply the necessary effects to get an IconSet.
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*/
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TDECORE_EXPORT TQIconSet DesktopIconSet(const TQString& name, int size=0,
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TDEInstance *instance=TDEGlobal::instance());
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/**
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* \relates TDEIconLoader
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* Load a toolbar icon.
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*/
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TDECORE_EXPORT TQPixmap BarIcon(const TQString& name, int size=0, int state=TDEIcon::DefaultState,
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TDEInstance *instance=TDEGlobal::instance());
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/**
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* \relates TDEIconLoader
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* Load a toolbar icon.
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*/
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TDECORE_EXPORT TQPixmap BarIcon(const TQString& name, TDEInstance *instance);
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/**
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* \relates TDEIconLoader
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* Load a toolbar icon, and apply the necessary effects to get an IconSet.
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*/
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TDECORE_EXPORT TQIconSet BarIconSet(const TQString& name, int size=0,
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TDEInstance *instance=TDEGlobal::instance());
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/**
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* \relates TDEIconLoader
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* Load a small icon.
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*/
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TDECORE_EXPORT TQPixmap SmallIcon(const TQString& name, int size=0,
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int state=TDEIcon::DefaultState,
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TDEInstance *instance=TDEGlobal::instance());
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/**
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* \relates TDEIconLoader
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* Load a small icon.
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*/
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TDECORE_EXPORT TQPixmap SmallIcon(const TQString& name, TDEInstance *instance);
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/**
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* \relates TDEIconLoader
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* Load a small icon, and apply the necessary effects to get an IconSet.
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*/
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TDECORE_EXPORT TQIconSet SmallIconSet(const TQString& name, int size=0,
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TDEInstance *instance=TDEGlobal::instance());
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/**
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* \relates TDEIconLoader
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* Load a main toolbar icon.
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*/
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TDECORE_EXPORT TQPixmap MainBarIcon(const TQString& name, int size=0,
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int state=TDEIcon::DefaultState,
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TDEInstance *instance=TDEGlobal::instance());
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/**
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* \relates TDEIconLoader
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* Load a main toolbar icon.
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*/
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TDECORE_EXPORT TQPixmap MainBarIcon(const TQString& name, TDEInstance *instance);
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/**
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* \relates TDEIconLoader
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* Load a main toolbar icon, and apply the effects to get an IconSet.
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*/
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TDECORE_EXPORT TQIconSet MainBarIconSet(const TQString& name, int size=0,
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TDEInstance *instance=TDEGlobal::instance());
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/**
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* \relates TDEIconLoader
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* Load a user icon. User icons are searched in $appdir/pics.
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*/
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TDECORE_EXPORT TQPixmap UserIcon(const TQString& name, int state=TDEIcon::DefaultState,
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TDEInstance *instance=TDEGlobal::instance());
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/**
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* \relates TDEIconLoader
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* Load a user icon. User icons are searched in $appdir/pics.
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*/
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TDECORE_EXPORT TQPixmap UserIcon(const TQString& name, TDEInstance *instance);
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/**
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* \relates TDEIconLoader
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* Load a user icon, and apply the effects to get an IconSet.
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*/
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TDECORE_EXPORT TQIconSet UserIconSet(const TQString& name,
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TDEInstance *instance=TDEGlobal::instance());
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/**
|
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* \relates TDEIconLoader
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* Returns the current icon size for a specific group.
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*/
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TDECORE_EXPORT int IconSize(TDEIcon::Group group, TDEInstance *instance=TDEGlobal::instance());
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#endif // __TDEIconLoader_h_Included__
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