src/hbcore/theme/hbcolorscheme.cpp
author Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
Mon, 19 Apr 2010 14:02:13 +0300
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/****************************************************************************
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**
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** Copyright (C) 2008-2010 Nokia Corporation and/or its subsidiary(-ies).
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** All rights reserved.
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** Contact: Nokia Corporation (developer.feedback@nokia.com)
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**
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** This file is part of the HbCore module of the UI Extensions for Mobile.
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**
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** GNU Lesser General Public License Usage
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** This file may be used under the terms of the GNU Lesser General Public
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** License version 2.1 as published by the Free Software Foundation and
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** appearing in the file LICENSE.LGPL included in the packaging of this file.
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** Please review the following information to ensure the GNU Lesser General
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** Public License version 2.1 requirements will be met:
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** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
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**
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** In addition, as a special exception, Nokia gives you certain additional
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** rights.  These rights are described in the Nokia Qt LGPL Exception
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** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
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**
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** If you have questions regarding the use of this file, please contact
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** Nokia at developer.feedback@nokia.com.
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**
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****************************************************************************/
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/*!
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    @proto
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    @hbcore
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    \class HbColorScheme
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    \brief HbColorScheme class is used to query colors from theme.
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    HbColorScheme class has a single static functions to query colors from theme. 
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     \sa QColor HbColorScheme::color(const QString &colorRole)
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    This method is appropriate for custom widgets which want to be consistent with standard 
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    look and feel and be themable. For example, a custom widget may want to have background color 
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    same as that of HbDialog. In such scenario the widget can query standard "popupbackground" color
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    from theme.
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    Following code queries color of popoup forground and applies it to a text item.
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    \code
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    QColor col = HbColorScheme::color("popupforeground");
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    if (col.isValid()) {
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       mytextitem->setTextColor(col);
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    }
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    \endcode
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    Note:  
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       - Theming framework schedules redraw for all graphics items when theme changes, so widgets 
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    need not to do it again by themselves. It is sufficient that widgets make sure that colors being
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    used to paint the graphics item has been updated in the handler of HbEvent::ThemeChanged.
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       - The color-role may contain information about the state also, e.g. "foreground_enabled".
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    \warning List of standard color roles is not yet finalized
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*/ 
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/*!
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 * \fn QColor HbColorScheme::color(const QString &colorRole))
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 * This function returns value of some predefined \a colorRole. 
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 *
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 * See class level document for detailed example
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 *.
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 */
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#include <hbcolorscheme.h>
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#include "hbcolortheme_p.h"
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QColor HbColorScheme::color( const QString &colorRole )
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{
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    return HbColorTheme::global()->color(colorRole);
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}