mini_timeline.h

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/*
 * Copyright (C) 2016-2017 Robin Gareus <robin@gareus.org>
 * Copyright (C) 2016-2018 Ben Loftis <ben@harrisonconsoles.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.
 */
 
#pragma once
 
#include <list>
#include <pangomm.h>
 
#include "pbd/signals.h"
 
#include "ardour/ardour.h"
#include "ardour/types.h"
#include "ardour/session_handle.h"
 
#include "gtkmm2ext/cairo_widget.h"
#include "gtkmm2ext/utils.h"
 
#include "audio_clock.h"
 
namespace ARDOUR {
        class Session;
}
 
namespace Gtk {
        class Menu;
}
 
class MiniTimeline : public CairoWidget, public ARDOUR::SessionHandlePtr, public PBD::ScopedConnectionList
{
 
public:
        MiniTimeline ();
        ~MiniTimeline ();
 
        void set_session (ARDOUR::Session *);
 
private:
        void session_going_away ();
        void super_rapid_update ();
 
        void on_size_request (Gtk::Requisition*);
        void on_size_allocate (Gtk::Allocation&);
        void dpi_changed ();
        void set_colors ();
        void parameter_changed (std::string const &);
 
        void calculate_time_width ();
        void calculate_time_spacing ();
        void update_minitimeline ();
        void draw_dots (cairo_t*, int left, int right, int y, Gtkmm2ext::Color);
        int  draw_mark (cairo_t*, int x0, int x1, const std::string&, bool& prelight);
        int  draw_cue (cairo_t*, int x0, int next_cue_left_edge, int tl_width, int cue_index, bool& prelight);
        int  draw_edge (cairo_t*, int x0, int x1, bool left, const std::string&, bool& prelight);
 
        void render (Cairo::RefPtr<Cairo::Context> const&, cairo_rectangle_t*);
        void format_time (samplepos_t when);
 
        bool on_button_press_event (GdkEventButton*);
        bool on_button_release_event (GdkEventButton*);
        bool on_scroll_event (GdkEventScroll*);
        bool on_motion_notify_event (GdkEventMotion*);
        bool on_leave_notify_event (GdkEventCrossing*);
 
        void build_minitl_context_menu ();
        void set_span (ARDOUR::samplecnt_t);
 
        Glib::RefPtr<Pango::Layout> _layout;
        sigc::connection super_rapid_connection;
        PBD::ScopedConnectionList marker_connection;
        PBD::ScopedConnectionList tempo_map_connection;
        PBD::ScopedConnectionList session_connection;
 
        samplepos_t _last_update_sample;
        AudioClock::Mode _clock_mode;
        int _time_width;
        int _time_height;
 
        int _n_labels;
        double _px_per_sample;
        ARDOUR::samplecnt_t _time_granularity;
        ARDOUR::samplecnt_t _time_span_samples;
        int _marker_height;
 
        int _pointer_x;
        int _pointer_y;
 
        Gtk::Menu* _minitl_context_menu;
 
        uint32_t _phead_color;
 
        struct JumpRange {
                JumpRange (int l, int r, samplepos_t t, bool p = false)
                        : left (l), right (r), to (t), prelight (p) {}
                int left;
                int right;
                samplepos_t to;
                bool prelight;
        };
 
        typedef std::list <JumpRange> JumpList;
        JumpList _jumplist;
};