78 lines
1.9 KiB
C++
78 lines
1.9 KiB
C++
/*
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* Copyright © 2009 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 as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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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 HALOPAINTER_H
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#define HALOPAINTER_H
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#include <QCache>
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#include <QPixmap>
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class QRect;
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class QPainter;
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class TileSet
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{
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public:
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enum Tile {
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Left, Center, Right, NTiles
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};
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TileSet(const QPixmap &pixmap);
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~TileSet() {}
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void paint(QPainter *painter, const QRect &rect);
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protected:
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QPixmap tiles[NTiles];
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};
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// -----------------------------------------------------------------------
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class HaloPainter : public QObject
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{
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public:
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~HaloPainter();
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static HaloPainter *instance() {
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if (!s_instance) {
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s_instance = new HaloPainter;
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}
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return s_instance;
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}
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static void drawHalo(QPainter *painter, const QRect &textRect) {
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instance()->paint(painter, textRect);
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}
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private:
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HaloPainter();
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TileSet *tiles(int height) const;
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void paint(QPainter *painter, const QRect &textRect) const;
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private:
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static HaloPainter *s_instance;
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mutable QCache<int, TileSet> m_tileCache;
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mutable QCache<int, QPixmap> m_haloCache;
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};
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#endif
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