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83 lines
2.8 KiB
C
83 lines
2.8 KiB
C
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// SPDX-FileCopyrightText: 2014 Dax89
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// SPDX-License-Identifier: MIT
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#ifndef QHEXRENDERER_H
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#define QHEXRENDERER_H
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/*
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* Nibble encoding:
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* AB -> [A][B]
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* Nibble Index: 1 0
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*/
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#include "qhexdocument.h"
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#include <QPainter>
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#include <QTextDocument>
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class QHexRenderer : public QObject
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{
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Q_OBJECT
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public:
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enum { HeaderArea, AddressArea, HexArea, AsciiArea, ExtraArea };
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public:
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explicit QHexRenderer(QHexDocument *document, const QFontMetricsF &fontmetrics, QObject *parent = nullptr);
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void renderFrame(QPainter *painter);
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void render(QPainter *painter, quint64 start, quint64 end, quint64 firstline); // begin included, end excluded
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void updateMetrics(const QFontMetricsF &fm);
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void enableCursor(bool b = true);
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void selectArea(const QPoint &pt);
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public:
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void blinkCursor();
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bool hitTest(const QPoint &pt, QHexPosition *position, quint64 firstline) const;
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int hitTestArea(const QPoint &pt) const;
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int selectedArea() const;
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bool editableArea(int area) const;
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quint64 documentLastLine() const;
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int documentLastColumn() const;
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quint64 documentLines() const;
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int documentWidth() const;
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int lineHeight() const;
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QRect getLineRect(quint64 line, quint64 firstline) const;
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int headerLineCount() const;
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int borderSize() const;
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int hexLineWidth() const;
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private:
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QString hexString(quint64 line, QByteArray *rawline = nullptr) const;
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QString asciiString(quint64 line, QByteArray *rawline = nullptr) const;
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QByteArray getLine(quint64 line) const;
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qint64 rendererLength() const;
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int getAddressWidth() const;
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int getHexColumnX() const;
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int getAsciiColumnX() const;
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int getEndColumnX() const;
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qreal getCellWidth() const;
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int getNCellsWidth(int n) const;
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void unprintableChars(QByteArray &ascii) const;
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private:
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enum Factor { Ascii = 1, Hex = 3 };
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void applyDocumentStyles(QPainter *painter, QTextDocument *textdocument) const;
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void applyBasicStyle(QTextCursor &textcursor, const QByteArray &rawline, Factor factor) const;
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void applyMetadata(QTextCursor &textcursor, quint64 line, Factor factor) const;
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void applySelection(QTextCursor &textcursor, quint64 line, Factor factor) const;
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void applyCursorAscii(QTextCursor &textcursor, quint64 line) const;
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void applyCursorHex(QTextCursor &textcursor, quint64 line) const;
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void drawAddress(QPainter *painter, const QPalette &palette, const QRect &linerect, quint64 line);
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void drawHex(QPainter *painter, const QPalette &palette, const QRect &linerect, quint64 line);
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void drawAscii(QPainter *painter, const QPalette &palette, const QRect &linerect, quint64 line);
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void drawHeader(QPainter *painter, const QPalette &palette);
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private:
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QHexDocument *m_document;
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QFontMetricsF m_fontmetrics;
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int m_selectedarea;
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bool m_cursorenabled;
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};
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#endif // QHEXRENDERER_H
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