widget_timeslider.h

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/* === S Y N F I G ========================================================= */
/* ========================================================================= */

/* === S T A R T =========================================================== */

#ifndef __SYNFIG_WIDGET_TIMESLIDER_H
#define __SYNFIG_WIDGET_TIMESLIDER_H

/* === H E A D E R S ======================================================= */
#include <gtkmm/drawingarea.h>
#include <gtkmm/adjustment.h>

#include <synfig/time.h>
#include "canvasview.h"

/* === M A C R O S ========================================================= */

/* === T Y P E D E F S ===================================================== */

/* === C L A S S E S & S T R U C T S ======================================= */

namespace studio {

void render_time_point_to_window(const Cairo::RefPtr<Cairo::Context> &cr,const Gdk::Rectangle& ca,const synfig::TimePoint &tp,bool selected=false);


/* Design for the timeslider...

    Concept: Scalable ruler
        Ticks are done every so often (30 s, 10 frames, 5 frames, etc.)
        Print out frame numbers next to the big ticks
        Show blue pills in separate area (above or below)
*/

class Widget_Timeslider : public Gtk::DrawingArea
{
protected: //implementation that other interfaces can see
    Glib::RefPtr<Pango::Layout> layout; //implementation awesomeness for text drawing

    Glib::RefPtr<Gtk::Adjustment> adj_default;
    Glib::RefPtr<Gtk::Adjustment> adj_timescale;

    //HACK - I should not have to see this...
    Glib::RefPtr<Gtk::Adjustment> adj_bounds;
    double time_per_tickmark;

    //Statistics used for drawing stuff (and making sure we don't if we don't need to)
    /*double start,end;
    double current;

    bool invalidated;*/

    guint32 last_event_time;

    float fps;

    sigc::connection time_value_change;
    sigc::connection time_other_change;

    //TODO: fill out blue pill stuff

    //input functions

    virtual bool on_motion_notify_event(GdkEventMotion* event); //for dragging
    virtual bool on_scroll_event(GdkEventScroll* event); //for zooming
    virtual bool on_button_press_event(GdkEventButton *event); //for clicking
    virtual bool on_button_release_event(GdkEventButton *event); //for clicking

    virtual bool on_draw(const Cairo::RefPtr<Cairo::Context> &cr);

    //void update_times();

    void zoom_in(bool centerontime = false);
    void zoom_out(bool centerontime = false);

    //Drag the Frame
    bool dragscroll;

    /*NOTE: if we can set the mouse position to the original position
            this would only have to be set once (and it would be good otherwise too)
    */
    double lastx; //last mouse position for dragging

public: //structors
    Widget_Timeslider();
    ~Widget_Timeslider();

public: //Normal Interface

    void draw() {queue_draw();}
    virtual void refresh(); //reget bluepills, time values and queue_draw if need be

public: //Time Interface

    //Run FPS stuff through it to the MAX
    double get_global_fps() const {return fps;}
    void set_global_fps(float d);

    //accessors for the time adjustment
    Glib::RefPtr<Gtk::Adjustment> get_time_adjustment() const { return adj_timescale; }
    void set_time_adjustment(const Glib::RefPtr<Gtk::Adjustment> &x);

    //HACK - I should not have to see these bounds (should be boundless)
    Glib::RefPtr<Gtk::Adjustment> get_bounds_adjustment() const { return adj_bounds; }
    void set_bounds_adjustment(const Glib::RefPtr<Gtk::Adjustment> &x) { adj_bounds = x; }
};

}; // END of namespace studio

/* === E N D =============================================================== */

#endif