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111 lines
2.9 KiB
111 lines
2.9 KiB
/*
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Rosegarden
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A MIDI and audio sequencer and musical notation editor.
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This program is Copyright 2000-2008
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Guillaume Laurent <glaurent@telegraph-road.org>,
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Chris Cannam <cannam@all-day-breakfast.com>,
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Richard Bown <richard.bown@ferventsoftware.com>
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The moral rights of Guillaume Laurent, Chris Cannam, and Richard
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Bown to claim authorship of this work have been asserted.
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Other copyrights also apply to some parts of this work. Please
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see the AUTHORS file and individual file headers for details.
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This program is free software; you can redistribute it and/or
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modify it under the terms of the GNU General Public License as
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published by the Free Software Foundation; either version 2 of the
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License, or (at your option) any later version. See the file
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COPYING included with this distribution for more information.
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*/
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#ifndef _RG_TEXTRULER_H_
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#define _RG_TEXTRULER_H_
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#include <tqfont.h>
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#include <tqfontmetrics.h>
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#include <tqsize.h>
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#include <tqwidget.h>
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class TQPaintEvent;
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namespace Rosegarden
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{
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class Segment;
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class RulerScale;
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/**
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* TextRuler is a widget that shows a strip of text strings at
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* x-coordinates corresponding to specified times. The strings
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* are obtained from a Segment, in which they are stored as
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* text events. (The Segment does not have to be part of a
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* Composition.)
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*
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* By design, this is more suitable for the display of single-purpose
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* read-only data such as calculated chord names or (at a pinch)
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* lyrics; it's not really suitable for displaying text data
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* associated with a staff.
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*/
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class TextRuler : public TQWidget
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{
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TQ_OBJECT
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public:
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/**
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* Construct a TextRuler that displays the text events found
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* in the given Segment at positions calculated by the given
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* RulerScale.
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*
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* The Segment will be destroyed along with the TextRuler, if
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* it was not in a Composition when the TextRuler was created
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* and still is not when it's destroyed. If the Segment was
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* found to be in a Composition on either occasion, it will be
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* assumed to be someone else's responsibility.
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*
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* The RulerScale will not be destroyed along with the TextRuler.
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*/
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TextRuler(RulerScale *rulerScale,
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Segment *segment,
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int height = 0,
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TQWidget* parent = 0,
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const char *name = 0);
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~TextRuler();
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virtual TQSize sizeHint() const;
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virtual TQSize minimumSizeHint() const;
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void setMinimumWidth(int width) { m_width = width; }
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public slots:
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void slotScrollHoriz(int x);
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protected:
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virtual void paintEvent(TQPaintEvent *);
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private:
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int m_height;
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int m_currentXOffset;
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int m_width;
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bool m_mySegmentMaybe;
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Segment *m_segment;
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RulerScale *m_rulerScale;
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TQFont m_font;
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TQFontMetrics m_fontMetrics;
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};
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}
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#endif
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