/* -*- tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */

#ifndef _GSM_LOAD_GRAPH_H_

#define _GSM_LOAD_GRAPH_H_

#include <glib.h>

#include <glibtop/cpu.h>

#include "legacy/gsm_color_button.h"

#include "util.h"

enum

{

    LOAD_GRAPH_CPU,

    LOAD_GRAPH_MEM,

    LOAD_GRAPH_NET

};

enum

{

    CPU_TOTAL,

    CPU_USED,

    N_CPU_STATES

};

struct LoadGraphLabels

{

    GtkLabel *cpu[GLIBTOP_NCPU];

    GtkLabel *memory;

    GtkLabel *swap;

    GtkLabel *net_in;

    GtkLabel *net_in_total;

    GtkLabel *net_out;

    GtkLabel *net_out_total;

};

struct LoadGraph

  : private procman::NonCopyable

{

    static const unsigned NUM_POINTS = 60 + 2;

    static const unsigned GRAPH_MIN_HEIGHT = 40;

    LoadGraph(guint type);

    ~LoadGraph();

    unsigned num_bars() const;

    void clear_background();

    double fontsize;

    double rmargin;

    double indent;

    guint n;

    gint type;

    guint speed;

    guint draw_width, draw_height;

    guint render_counter;

    guint frames_per_unit;

    guint graph_dely;

    guint real_draw_height;

    double graph_delx;

    guint graph_buffer_offset;

    std::vector<GdkRGBA> colors;

    std::vector<double> data_block;

    double* data[NUM_POINTS];

    GtkBox *main_widget;

    GtkDrawingArea *disp;

    cairo_surface_t *background;

    guint timer_index;

    gboolean draw;

    LoadGraphLabels labels;

    GsmColorButton *mem_color_picker;

    GsmColorButton *swap_color_picker;

    /* union { */

    struct

    {

        guint now; /* 0 -> current, 1 -> last

                      now ^ 1 each time */

        /* times[now], times[now ^ 1] is last */

        guint64 times[2][GLIBTOP_NCPU][N_CPU_STATES];

    } cpu;

    struct

    {

        guint64 last_in, last_out;

        GTimeVal time;

        guint64 max;

        unsigned values[NUM_POINTS];

        size_t cur;

    } net;

    /* }; */

};

/* Force a drawing update */

void

load_graph_queue_draw (LoadGraph *g);

/* Start load graph. */

void

load_graph_start (LoadGraph *g);

/* Stop load graph. */

void

load_graph_stop (LoadGraph *g);

/* Change load graph speed and restart it if it has been previously started */

void

load_graph_change_speed (LoadGraph *g,

                         guint new_speed);

/* Clear the history data. */

void

load_graph_reset (LoadGraph *g);

LoadGraphLabels*

load_graph_get_labels (LoadGraph *g) G_GNUC_CONST;

GtkBox*

load_graph_get_widget (LoadGraph *g) G_GNUC_CONST;

GsmColorButton*

load_graph_get_mem_color_picker(LoadGraph *g) G_GNUC_CONST;

GsmColorButton*

load_graph_get_swap_color_picker(LoadGraph *g) G_GNUC_CONST;

#endif /* _GSM_LOAD_GRAPH_H_ */