e16bb15310
decode.* will solely decode the teletext packets into a grid of characters and colours and other attributes stored in an agnostic way, then render.* will read this grid and render the characters onto the screen with the Qt specific methods.
84 lines
2.1 KiB
C++
84 lines
2.1 KiB
C++
/*
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* Copyright (C) 2020-2022 Gavin MacGregor
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*
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* This file is part of QTeletextMaker.
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*
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* QTeletextMaker 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 3 of the License, or
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* (at your option) any later version.
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*
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* QTeletextMaker 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
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* GNU 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 QTeletextMaker. If not, see <https://www.gnu.org/licenses/>.
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*/
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#ifndef RENDER_H
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#define RENDER_H
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#include <QBitmap>
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#include <QSet>
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#include <QPixmap>
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#include "decode.h"
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class TeletextFontBitmap
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{
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public:
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TeletextFontBitmap();
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~TeletextFontBitmap();
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QBitmap *rawBitmap() const { return s_fontBitmap; }
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private:
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static int s_instances;
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static QBitmap* s_fontBitmap;
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};
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class TeletextPageRender : public QObject
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{
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Q_OBJECT
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public:
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TeletextPageRender();
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~TeletextPageRender();
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QPixmap* pagePixmap(int i) const { return m_pagePixmap[i]; };
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bool mix() const { return m_mix; };
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void setDecoder(TeletextPageDecode *);
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void renderPage(bool force=false);
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bool showControlCodes() const { return m_showControlCodes; };
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public slots:
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void colourChanged(int);
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void setReveal(bool);
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void setMix(bool);
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void setShowControlCodes(bool);
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signals:
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void flashChanged(int);
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protected:
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TeletextFontBitmap m_fontBitmap;
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QPixmap* m_pagePixmap[6];
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textCell m_cell[25][72];
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unsigned char m_controlCodeCache[25][40];
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bool m_reveal, m_mix, m_showControlCodes;
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QSet<QPair<int, int>> m_flash1HzCells;
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QSet<QPair<int, int>> m_flash2HzCells;
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int m_flashBuffersHz;
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private:
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inline void drawFromFontBitmap(QPainter &, int, int, unsigned char, int, TeletextPageDecode::CharacterFragment);
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inline void drawCharacter(QPainter &, int, int, unsigned char, int, int, TeletextPageDecode::CharacterFragment);
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void updateFlashBuffers();
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TeletextPageDecode *m_decoder;
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};
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#endif
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