98 lines
2.5 KiB
C++
98 lines
2.5 KiB
C++
/*
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* Copyright (C) 2014 Paul Davis <paul@linuxaudiosystems.com>
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* Copyright (C) 2015-2017 Robin Gareus <robin@gareus.org>
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*
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* This program 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 2 of the License, or
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* (at your option) any later version.
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*
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* This program 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 along
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* with this program; if not, write to the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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*/
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#ifndef __CANVAS_RULER_H__
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#define __CANVAS_RULER_H__
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#include <string>
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#include <vector>
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#include <pangomm/fontdescription.h>
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#include "canvas/rectangle.h"
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namespace ArdourCanvas
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{
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class LIBCANVAS_API Ruler : public Rectangle
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{
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public:
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struct Mark {
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enum Style {
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Major,
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Minor,
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Micro
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};
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std::string label;
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double position;
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Style style;
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};
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struct Metric {
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Metric () : units_per_pixel (0) {}
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virtual ~Metric() {}
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double units_per_pixel;
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/* lower and upper and sample positions, which are also canvas coordinates
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*/
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virtual void get_marks (std::vector<Mark>&, int64_t lower, int64_t upper, int maxchars) const = 0;
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};
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Ruler (Canvas*, const Metric* m);
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Ruler (Canvas*, const Metric* m, Rect const&);
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Ruler (Item*, const Metric* m);
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Ruler (Item*, const Metric* m, Rect const&);
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virtual ~Ruler () {
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delete _font_description;
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}
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void set_range (int64_t lower, int64_t upper);
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void set_font_description (Pango::FontDescription);
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void set_second_font_description (Pango::FontDescription);
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void set_metric (const Metric *);
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void render (Rect const & area, Cairo::RefPtr<Cairo::Context>) const;
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void set_divide_colors (Gtkmm2ext::Color top, Gtkmm2ext::Color bottom);
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void set_divide_height (double);
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private:
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const Metric* _metric;
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/* lower and upper and bounds for ruler */
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int64_t _lower;
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int64_t _upper;
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double _divide_height;
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Gtkmm2ext::Color _divider_color_top;
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Gtkmm2ext::Color _divider_color_bottom;
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Pango::FontDescription* _font_description;
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Pango::FontDescription* _second_font_description;
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mutable std::vector<Mark> marks;
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mutable bool _need_marks;
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};
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}
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#endif
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