95 lines
3.2 KiB
C++
95 lines
3.2 KiB
C++
/*
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* Copyright 2007 Matthew Woehlke <mw_triad@users.sourceforge.net>
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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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#include "helper.h"
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#include <KColorUtils>
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#include <QtGui/QPainter>
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#include <math.h>
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OxygenWindecoHelper::OxygenWindecoHelper(const QByteArray &componentName)
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: OxygenHelper(componentName)
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{
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m_windecoButtonCache.setMaxCost(64);
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}
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QPixmap OxygenWindecoHelper::windecoButton(const QColor &color, int size)
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{
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quint64 key = (quint64(color.rgba()) << 32) | size;
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QPixmap *pixmap = m_windecoButtonCache.object(key);
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if (!pixmap)
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{
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pixmap = new QPixmap(size, (int)ceil(double(size)*10.0/9.0));
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pixmap->fill(QColor(0,0,0,0));
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QPainter p(pixmap);
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p.setRenderHints(QPainter::Antialiasing);
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p.setPen(Qt::NoPen);
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p.setWindow(0,0,18,20);
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QColor light = calcLightColor(color);
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QColor dark = calcDarkColor(color);
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// shadow
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drawShadow(p, calcShadowColor(color), 18);
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// bevel
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qreal y = KColorUtils::luma(color);
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qreal yl = KColorUtils::luma(light);
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qreal yd = KColorUtils::luma(light);
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QLinearGradient bevelGradient(0, 0, 0, 18);
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bevelGradient.setColorAt(0.45, light);
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bevelGradient.setColorAt(0.80, dark);
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if (y < yl && y > yd) // no middle when color is very light/dark
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bevelGradient.setColorAt(0.55, color);
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p.setBrush(QBrush(bevelGradient));
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p.drawEllipse(QRectF(2.0,2.0,14.0,14.0));
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// inside mask
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QRadialGradient maskGradient(9,9,7,9,9);
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maskGradient.setColorAt(0.70, QColor(0,0,0,0));
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maskGradient.setColorAt(0.85, QColor(0,0,0,140));
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maskGradient.setColorAt(0.95, QColor(0,0,0,255));
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p.setCompositionMode(QPainter::CompositionMode_DestinationIn);
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p.setBrush(maskGradient);
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p.drawRect(0,0,20,20);
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// inside
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QLinearGradient innerGradient(0, 3, 0, 15);
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innerGradient.setColorAt(0.0, color);
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innerGradient.setColorAt(1.0, light);
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p.setCompositionMode(QPainter::CompositionMode_DestinationOver);
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p.setBrush(innerGradient);
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p.drawEllipse(QRectF(2.0,2.0,14.0,14.0));
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// anti-shadow
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QRadialGradient highlightGradient(9,8.5,8,9,8.5);
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highlightGradient.setColorAt(0.85, alphaColor(light, 0.0));
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highlightGradient.setColorAt(1.00, light);
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p.setCompositionMode(QPainter::CompositionMode_SourceOver);
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p.setBrush(highlightGradient);
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p.drawEllipse(QRectF(2.0,2.0,14.0,14.0));
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m_windecoButtonCache.insert(key, pixmap);
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}
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return *pixmap;
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}
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