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Diffstat (limited to 'src/gui/editors/guitar/NoteSymbols.h')
| -rw-r--r-- | src/gui/editors/guitar/NoteSymbols.h | 192 |
1 files changed, 192 insertions, 0 deletions
diff --git a/src/gui/editors/guitar/NoteSymbols.h b/src/gui/editors/guitar/NoteSymbols.h new file mode 100644 index 0000000..f90fefb --- /dev/null +++ b/src/gui/editors/guitar/NoteSymbols.h @@ -0,0 +1,192 @@ +/* -*- c-basic-offset: 4 indent-tabs-mode: nil -*- vi:set ts=8 sts=4 sw=4: */ + +/* + Rosegarden + A MIDI and audio sequencer and musical notation editor. + + This program is Copyright 2000-2008 + Guillaume Laurent <[email protected]>, + Chris Cannam <[email protected]>, + Richard Bown <[email protected]> + + The moral rights of Guillaume Laurent, Chris Cannam, and Richard + Bown to claim authorship of this work have been asserted. + + This file contains code from + Other copyrights also apply to some parts of this work. Please + see the AUTHORS file and individual file headers for details. + + This program is free software; you can redistribute it and/or + modify it under the terms of the GNU General Public License as + published by the Free Software Foundation; either version 2 of the + License, or (at your option) any later version. See the file + COPYING included with this distribution for more information. +*/ + + +#ifndef _RG_SYMBOLS_H_ +#define _RG_SYMBOLS_H_ + +#include <qbrush.h> +#include <qpainter.h> + +namespace Rosegarden +{ + +/** + *---------------------------------------- + * Finding X position on guitar chord pixmap + *---------------------------------------- + * + * Originally x = position * scale + FC::BORDER + FC::CIRCBORD + FC::FRETTEXT + * + * The last three can be condense into on term called XBorder + * XBorder = FC::BORDER + FC::CIRCBORD + FC::FRETTEXT + * = 5 + 2 + 10 (see fingers.h) + * = 17 + * + * The drawable guitar chord space on the x-axis: + * XGuitarChord = pixmap width - XBorder + * = width - 17 + * + * The guitar chord x-axis is broken up into colums which represent the drawable + * space for a guitar chord component (e.g. note, barre) + * Column Width = XGuitarChord / number of strings + * + * Therefore a new x can be calculated from the position and the column width + * x = (position * Column Width) + XBorder + * + *------------------------------------------- + * Finding Y position on guitar chord pixmap + *------------------------------------------- + * + * Originally y = (FC::BORDER * scale) + (2 * FC::SPACER) + (fret * scale) + FC::CIRCBORD + * + * As with the x-axis the equation can be separated into the position plus the border. In + * this case YBorder + * YBorder = (FC::BORDER*scale) + (2*FC::SPACER) + FC::CIRCBORD + * = 17 (If we want to use the same border as the x-axis) + * + * The drawable guitar chord space on the y-axis: + * YGuitarChord = pixmap height - YBorder + * + * The guitar chord y-axis is broken up into rows which represent the drawable + * space for a guitar chord component (e.g. note, barre) + * Row Height = YGuitarChord / number of frets + * + * Therefore a new y can be calculated from the fret position and the row height + * y = fret * Row Height + **/ + +namespace Guitar +{ + +class Fingering; + + +class NoteSymbols +{ +private: + typedef std::pair<unsigned int, unsigned int> posPair; + + static float const LEFT_BORDER_PERCENTAGE; + static float const RIGHT_BORDER_PERCENTAGE; + static float const GUITAR_CHORD_WIDTH_PERCENTAGE; + static float const TOP_BORDER_PERCENTAGE; + static float const BOTTOM_BORDER_PERCENTAGE; + static float const GUITAR_CHORD_HEIGHT_PERCENTAGE; + static int const TOP_GUITAR_CHORD_MARGIN; + static int const FRET_PEN_WIDTH; + static int const STRING_PEN_WIDTH; + +public: + + NoteSymbols(unsigned int nbOfStrings, unsigned int nbOfFrets) : + m_nbOfStrings(nbOfStrings), + m_nbOfFrets(nbOfFrets) {}; + + //! Display a mute symbol in the QPainter object + void + drawMuteSymbol ( QPainter* p, + unsigned int position ) const; + + /* This code borrowed from KGuitar 0.5 */ + //! Display a open symbol in the QPainter object (KGuitar) + void drawOpenSymbol ( QPainter* p, + unsigned int position ) const; + + /* This code borrowed from KGuitar 0.5 */ + //! Display a note symbol in the QPainter object (KGuitar) + void drawNoteSymbol ( QPainter* p, + unsigned int stringNb, + int fretNb, + bool transient = false ) const; + + /* This code borrowed from KGuitar 0.5 */ + /** + * Display a bar symbol in the QPainter object (KGuitar) + * The code from the KGuitar project was modified to display a bar. This feature was not + * available in that project + */ + void drawBarreSymbol ( QPainter* p, + int fretNb, + unsigned int start, + unsigned int end ) const; + + void drawFretNumber ( QPainter* p, + unsigned int fret_num ) const; + + void drawFrets ( QPainter* p ) const; + + void drawStrings ( QPainter* p ) const; + + unsigned int getTopBorder ( unsigned int imgHeight ) const; + + unsigned int getBottomBorder ( unsigned int imgHeight ) const; + + unsigned int getLeftBorder ( unsigned int imgWidth ) const; + + unsigned int getRightBorder ( unsigned int imgWidth ) const; + + unsigned int getGuitarChordWidth ( int imgWidth ) const; + + unsigned int getGuitarChordHeight ( int imgHeight ) const; + + unsigned int getFontPixelSize ( int imgWidth, int imgHeight ) const; + + std::pair<bool, unsigned int> + getStringNumber ( int imgWidth, + unsigned int x_pos, + unsigned int string_num ) const; + + std::pair<bool, unsigned int> + getFretNumber ( int imgHeight, + unsigned int y_pos, + unsigned int maxFretNum ) const; + + QRect getTransientNoteSymbolRect(QSize guitarChordSize, + unsigned int stringNb, + int fretNb) const; + + static void drawFingeringPixmap(const Fingering& fingering, const NoteSymbols& noteSymbols, QPainter *p); + +private: + + posPair + getX ( int imgWidth, unsigned int stringNb, unsigned int nbOfStrings ) const; + + posPair + getY ( int imgHeight, unsigned int fretNb, unsigned int nbOfFrets ) const; + + + unsigned int m_nbOfStrings; + unsigned int m_nbOfFrets; + +}; + +} /* namespace Guitar */ + +} + +#endif /* SYMBOLS_H_ */ + |