widgets/widgets/frame.h

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/*
 * Copyright (C) 2020 Robin Gareus <robin@gareus.org>
 *
 * 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 _WIDGETS_FRAME_H_
#define _WIDGETS_FRAME_H_
 
#include <optional>
#include <gtkmm/bin.h>
 
#include "gtkmm2ext/colors.h"
#include "gtkmm2ext/cairo_theme.h"
#include "widgets/visibility.h"
 
namespace ArdourWidgets {
 
class LIBWIDGETS_API Frame : public Gtk::Bin, public Gtkmm2ext::CairoTheme
{
public:
        enum Orientation {
                Horizontal,
                Vertical
        };
 
        Frame (Orientation orientation = Horizontal, bool force_boxy = false);
        ~Frame ();
 
        void set_label (std::string const&);
        void set_padding (int);
        void set_edge_color (Gtkmm2ext::Color);
        void reset_edge_color ();
 
        void set_draw (bool yn);
        bool draw() const { return _draw; }
        
protected:
        void on_add (Gtk::Widget*);
        void on_remove (Gtk::Widget*);
        void on_size_request (GtkRequisition*);
        void on_size_allocate (Gtk::Allocation&);
        bool on_expose_event (GdkEventExpose*);
        void on_style_changed (const Glib::RefPtr<Gtk::Style>&);
        void on_name_changed ();
 
private:
        Glib::RefPtr<Gtk::Style> get_parent_style ();
 
        Orientation                 _orientation;
        Gtk::Widget*                _w;
        Gtk::Widget*                _current_parent;
        sigc::connection            _parent_style_change;
        Glib::RefPtr<Pango::Layout> _layout;
        std::string                 _label_text;
        std::optional<Gdk::Color> _edge_color;
        GtkRequisition              _min_size;
 
        int  _border;
        int  _padding;
        int  _label_pad_w;
        int  _label_pad_h;
        int  _label_left;
        int  _text_width;
        int  _text_height;
        int  _alloc_x0;
        int  _alloc_y0;
        bool _boxy;
        bool _draw;
};
 
} // namespace ArdourWidgets
 
#endif