e1ba67484f
External pages with DRCS definitions can be loaded using the options in the "DRCS pages" submenu within the "View" menu. Two DRCS pages can be loaded, one for Global DRCS definitions and the other for Normal DRCS definitions. Level 2.5 mode 0 PTUs are fully supported. Partial support for Level 3.5 mode 1, 2 and 3 PTUs. DCLUTs defined in X/28/1 on the main page are not yet implemented; the characters currently appear in the default DCLUTs described in D.1.6 and D.2.2 of the ETSI spec.
95 lines
3.2 KiB
C++
95 lines
3.2 KiB
C++
/*
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* Copyright (C) 2020-2025 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 <QColor>
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#include <QIcon>
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#include <QImage>
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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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QImage *image() const { return s_fontImage; }
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QPixmap charBitmap(int c, int s) const { return s_fontBitmap->copy((c-32)*12, s*10, 12, 10); }
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QIcon charIcon(int c, int s) const { return QIcon(charBitmap(c, s)); }
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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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static QImage* s_fontImage;
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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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enum RenderMode { RenderNormal, RenderMix, RenderWhiteOnBlack, RenderBlackOnWhite };
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TeletextPageRender();
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~TeletextPageRender();
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QImage* image(int i) const { return m_pageImage[i]; };
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RenderMode renderMode() const { return m_renderMode; };
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void setDecoder(TeletextPageDecode *decoder);
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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 index);
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void setReveal(bool reveal);
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void setRenderMode(RenderMode renderMode);
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void setShowControlCodes(bool showControlCodes);
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signals:
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void flashChanged(int newFlashHz);
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protected:
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TeletextFontBitmap m_fontBitmap;
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QImage* m_pageImage[6];
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unsigned char m_controlCodeCache[25][40];
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RenderMode m_renderMode;
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bool m_reveal, m_showControlCodes;
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int m_flashBuffersHz;
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int m_flashingRow[25];
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private:
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inline void drawFromBitmap(QPainter &painter, int r, int c, const QImage image, TeletextPageDecode::CharacterFragment characterFragment);
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inline void drawFromFontBitmap(QPainter &painter, int r, int c, unsigned char characterCode, int characterSet, TeletextPageDecode::CharacterFragment characterFragment);
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inline void drawCharacter(QPainter &painter, int r, int c, unsigned char characterCode, int characterSet, int characterDiacritical, TeletextPageDecode::CharacterFragment characterFragment);
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inline bool drawDRCSCharacter(QPainter &painter, int r, int c, TeletextPageDecode::DRCSSource drcsSource, int drcsSubTable, int drcsChar, TeletextPageDecode::CharacterFragment characterFragment, bool flashPhOn = true);
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inline void drawBoldOrItalicCharacter(QPainter &painter, int r, int c, unsigned char characterCode, int characterSet, TeletextPageDecode::CharacterFragment characterFragment);
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void renderRow(int r, int ph, bool force=false);
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void setRowFlashStatus(int r, int rowFlashHz);
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QColor m_foregroundQColor, m_backgroundQColor;
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TeletextPageDecode *m_decoder;
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};
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#endif
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