118 lines
3.6 KiB
C++
118 lines
3.6 KiB
C++
// $Id: helper.h,v 1.6 2009/05/29 14:34:07 hpereira Exp $
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/*
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* Copyright 2008 Long Huynh Huu <long.upcase@googlemail.com>
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* Copyright 2007 Matthew Woehlke <mw_triad@users.sourceforge.net>
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* Copyright 2007 Casper Boemann <cbr@boemann.dk>
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* Copyright 2007 Fredrik Höglund <fredrik@kde.org>
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Library General Public
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* License version 2 as published by the Free Software Foundation.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public License
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* along with this library; see the file COPYING.LIB. If not, write to
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* the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
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* Boston, MA 02110-1301, USA.
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*/
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#ifndef __NITROGEN_HELPER_H
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#define __NITROGEN_HELPER_H
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#include <ksharedconfig.h>
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#include <kcomponentdata.h>
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#include <QtGui/QColor>
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#include <QtGui/QPixmap>
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#include <QtGui/QLinearGradient>
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#include <QtCore/QCache>
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#include "../nitrogenconfiguration.h"
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#define _glowBias 0.9 // not likely to be configurable
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// WARNING - NitrogenHelper must be a K_GLOBAL_STATIC!
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class NitrogenHelper
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{
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public:
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//! constructor
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explicit NitrogenHelper(const QByteArray& );
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//! destructor
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virtual ~NitrogenHelper() {}
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//! configuration
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KSharedConfigPtr config() const;
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//! reload configuration
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void reloadConfig();
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//! window backbround
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void renderWindowBackground(
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QPainter *p,
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const QRect &clipRect,
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const QWidget *widget,
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const QPalette & pal,
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int gradient_shift = 0
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);
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//! clear cache
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virtual void invalidateCaches();
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//!@name color calculations
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// @{
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static bool lowThreshold(const QColor &color);
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static QColor alphaColor(QColor color, double alpha);
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QColor calcLightColor(const QColor &color) const;
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QColor calcDarkColor(const QColor &color) const;
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QColor calcShadowColor(const QColor &color) const;
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QColor backgroundColor(const QColor &color, int height, int y);
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QColor backgroundRadialColor(const QColor &color) const;
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QColor backgroundTopColor(const QColor &color) const;
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QColor backgroundBottomColor(const QColor &color) const;
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//@}
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//!@name gradients
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//@{
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QPixmap verticalGradient(const QColor &color, int height);
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QPixmap radialGradient(const QColor &color, int width, int y_offset = 0);
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QLinearGradient decoGradient(const QRect &r, const QColor &color);
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//@}
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//! buttons
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QPixmap windecoButton(const QColor &color, bool pressed, Nitrogen::NitrogenConfiguration::ButtonType type, int size = 21);
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QPixmap windecoButtonGlow(const QColor &color, int size = 21);
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//! frame
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void drawFloatFrame(QPainter *p, const QRect r, const QColor &color, bool drawUglyShadow=true, bool isActive=false, const QColor &frameColor=QColor()) const;
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//! separator
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void drawSeparator(QPainter *p, const QRect &r, const QColor &color, Qt::Orientation orientation) const;
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protected:
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void drawShadow(QPainter&, const QColor&, int size) const;
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static QPixmap glow(const QColor&, int size, int rsize);
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static const double _shadowGain;
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KComponentData _componentData;
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KSharedConfigPtr _config;
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qreal _contrast;
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qreal _bgcontrast;
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// cache
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QCache<quint64, QPixmap> m_backgroundCache;
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QCache<quint64, QPixmap> m_windecoButtonCache;
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QCache<quint64, QPixmap> m_windecoButtonGlowCache;
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};
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#endif // __NITROGEN_HELPER_H
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