triggerbox_ui.h

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/*
 * Copyright (C) 2021 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 _gtk_ardour_triggerbox_ui_h_
#define _gtk_ardour_triggerbox_ui_h_
 
#include <gtkmm/colorselection.h>
 
#include "pbd/properties.h"
 
#include "ardour/triggerbox.h"
 
#include "canvas/canvas.h"
#include "canvas/rectangle.h"
 
#include "fitted_canvas_widget.h"
 
#include "trigger_ui.h"
 
namespace Temporal
{
        struct BBT_Offset;
}
 
namespace ArdourCanvas
{
        class Text;
        class Polygon;
}
 
class TriggerEntry : public ArdourCanvas::Rectangle, public TriggerUI
{
public:
        TriggerEntry (ArdourCanvas::Item* item, ARDOUR::TriggerReference rf);
        ~TriggerEntry ();
 
        ArdourCanvas::Rectangle* play_button;
        ArdourCanvas::Rectangle* name_button;
        ArdourCanvas::Rectangle* follow_button;
        ArdourCanvas::Text*      name_text;
 
        void draw_launch_icon (Cairo::RefPtr<Cairo::Context> context, float size, float scale) const;
        void draw_follow_icon (Cairo::RefPtr<Cairo::Context> context, ARDOUR::FollowAction const & icon, float size, float scale) const;
 
        void render (ArdourCanvas::Rect const& area, Cairo::RefPtr<Cairo::Context> context) const;
 
        void _size_allocate (ArdourCanvas::Rect const&);
 
        void on_trigger_changed (PBD::PropertyChange const& change);
 
        void selection_change ();
 
        enum EnteredState {
                PlayEntered,
                NameEntered,
                FollowEntered,
                NoneEntered
        };
 
        void set_widget_colors (TriggerEntry::EnteredState es = NoneEntered);
 
        bool name_button_event (GdkEvent*);
 
private:
        bool   _grabbed;
        double _poly_size;
        double _poly_margin;
 
        int  _drag_start_x;
        int  _drag_start_y;
        bool _drag_active;
 
        bool event (GdkEvent*);
        void drag_begin (Glib::RefPtr<Gdk::DragContext> const&);
        void drag_end (Glib::RefPtr<Gdk::DragContext> const&);
        void drag_data_get (Glib::RefPtr<Gdk::DragContext> const&, Gtk::SelectionData&, guint, guint);
 
        void ui_parameter_changed (std::string const& p);
 
        bool play_button_event (GdkEvent*);
        bool follow_button_event (GdkEvent*);
 
        void owner_prop_change (PBD::PropertyChange const&);
        void owner_color_changed ();
 
        PBD::ScopedConnection _owner_prop_connection;
};
 
class TriggerBoxUI : public ArdourCanvas::Rectangle
{
public:
        TriggerBoxUI (ArdourCanvas::Item* parent, ARDOUR::TriggerBox&);
        ~TriggerBoxUI ();
 
        void _size_allocate (ArdourCanvas::Rect const&);
 
        static Glib::RefPtr<Gtk::TargetList> dnd_src ()
        {
                return _dnd_src;
        }
 
private:
        typedef std::vector<TriggerEntry*> Slots;
 
        ARDOUR::TriggerBox& _triggerbox;
        Slots               _slots;
 
        static Glib::RefPtr<Gtk::TargetList> _dnd_src;
 
        void build ();
 
        void selection_changed ();
 
        bool drag_motion (Glib::RefPtr<Gdk::DragContext> const&, int, int, guint);
        void drag_leave (Glib::RefPtr<Gdk::DragContext> const&, guint);
        void drag_data_received (Glib::RefPtr<Gdk::DragContext> const&, int, int, Gtk::SelectionData const&, guint, guint);
 
        bool triggerbox_event (GdkEvent*);
 
        uint64_t slot_at_y (int) const;
 
        sigc::connection _selection_connection;
};
 
class TriggerBoxWidget : public FittedCanvasWidget
{
public:
        TriggerBoxWidget (float w, float h);
 
        void set_triggerbox (ARDOUR::TriggerBox* tb);
 
private:
        TriggerBoxUI* ui;
};
 
#endif