99 lines
3.3 KiB
C++
99 lines
3.3 KiB
C++
/*
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* Cantata
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*
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* Copyright (c) 2011-2012 Craig Drummond <craig.p.drummond@gmail.com>
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*
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* ----
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program 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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* General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; see the file COPYING. 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 "gtkstyle.h"
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#include <QtGui/QPainter>
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#include <QtGui/QStyleOptionViewItemV4>
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#include <QtGui/QApplication>
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#include <QtCore/QCache>
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#include <QtCore/qglobal.h>
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static bool usingGtkStyle=false;
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static bool useFullGtkStyle=false;
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static inline void setup()
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{
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#if !defined Q_OS_WIN
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static bool init=false;
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if (!init) {
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init=true;
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usingGtkStyle=QApplication::style()->inherits("QGtkStyle");
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useFullGtkStyle=usingGtkStyle && qgetenv("KDE_FULL_SESSION").isEmpty();
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}
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#endif
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}
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bool GtkStyle::isActive()
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{
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setup();
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return usingGtkStyle;
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}
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bool GtkStyle::mimicWidgets()
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{
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setup();
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return useFullGtkStyle;
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}
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void GtkStyle::drawSelection(const QStyleOptionViewItemV4 &opt, QPainter *painter, double opacity)
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{
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static const int constMaxDimension=32;
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static QCache<QString, QPixmap> cache(30000);
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if (opt.rect.width()<2 || opt.rect.height()<2) {
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return;
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}
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int width=qMin(constMaxDimension, opt.rect.width());
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QString key=QString::number(width)+QChar(':')+QString::number(opt.rect.height());
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QPixmap *pix=cache.object(key);
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if (!pix) {
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pix=new QPixmap(width, opt.rect.height());
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QStyleOptionViewItemV4 styleOpt(opt);
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pix->fill(Qt::transparent);
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QPainter p(pix);
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styleOpt.state=opt.state;
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styleOpt.state&=~(QStyle::State_Selected|QStyle::State_MouseOver);
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styleOpt.state|=QStyle::State_Selected|QStyle::State_Enabled|QStyle::State_Active;
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styleOpt.viewItemPosition = QStyleOptionViewItemV4::OnlyOne;
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styleOpt.rect=QRect(0, 0, opt.rect.width(), opt.rect.height());
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QApplication::style()->drawPrimitive(QStyle::PE_PanelItemViewItem, &styleOpt, &p, 0);
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p.end();
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cache.insert(key, pix, pix->width()*pix->height());
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}
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double opacityB4=painter->opacity();
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painter->setOpacity(opacity);
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if (opt.rect.width()>pix->width()) {
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int half=qMin(opt.rect.width()>>1, pix->width()>>1);
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painter->drawPixmap(opt.rect.x(), opt.rect.y(), pix->copy(0, 0, half, pix->height()));
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if ((half*2)!=opt.rect.width()) {
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painter->drawTiledPixmap(opt.rect.x()+half, opt.rect.y(), (opt.rect.width()-((2*half))), opt.rect.height(), pix->copy(half-1, 0, 1, pix->height()));
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}
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painter->drawPixmap((opt.rect.x()+opt.rect.width())-half, opt.rect.y(), pix->copy(half, 0, half, pix->height()));
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} else {
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painter->drawPixmap(opt.rect, *pix);
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}
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painter->setOpacity(opacityB4);
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}
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