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livetrax/libs/surfaces/push2/menu.h

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/*
* Copyright (C) 2016 Paul Davis <paul@linuxaudiosystems.com>
*
* 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.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#ifndef __ardour_push2_menu_h__
#define __ardour_push2_menu_h__
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#include <vector>
namespace Cairo {
class Context;
}
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#include <pangomm/fontdescription.h>
#include "pbd/signals.h"
#include "canvas/container.h"
namespace ArdourCanvas {
class Text;
class Rectangle;
class Rect;
}
namespace ArdourSurface {
class Push2Menu : public ArdourCanvas::Container
{
public:
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Push2Menu (ArdourCanvas::Item* parent, std::vector<std::string>);
void render (ArdourCanvas::Rect const& area, Cairo::RefPtr<Cairo::Context> context) const;
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void set_wrap (bool);
void set_active (uint32_t index);
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uint32_t active () const { return _active; }
uint32_t items() const { return displays.size(); }
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uint32_t rows() const { return nrows; }
uint32_t cols() const { return ncols; }
void set_layout (int cols, int rows);
void set_font_description (Pango::FontDescription);
void set_text_color (Gtkmm2ext::Color);
void set_active_color (Gtkmm2ext::Color);
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bool can_scroll_left() const { return first >= nrows; }
bool can_scroll_right() const { return last < displays.size() - 1; }
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enum Direction { DirectionUp, DirectionDown, DirectionLeft, DirectionRight };
void scroll (Direction, bool page = false);
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PBD::Signal0<void> ActiveChanged;
PBD::Signal0<void> Rearranged;
private:
std::vector<ArdourCanvas::Text*> displays;
ArdourCanvas::Rectangle* active_bg;
void rearrange (uint32_t initial_display);
double baseline;
int row_start;
int col_start;
uint32_t ncols;
uint32_t nrows;
bool wrap;
uint32_t first;
uint32_t last;
uint32_t _active;
Gtkmm2ext::Color text_color;
Gtkmm2ext::Color active_color;
Gtkmm2ext::Color contrast_color;
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Pango::FontDescription font_description;
inline int active_row () const { return _active % nrows; }
inline int active_col () const { return (_active / nrows); }
inline int active_top () const { return active_col() * nrows; }
};
} // namespace
#endif /* __ardour_push2_menu_h__ */