/*
* Copyright © 2018 Red Hat, Inc.
*
* 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, see .
*
* Authors: Joaquim Rocha
* Carlos Garnacho
*/
#include "config.h"
#include "cc-clock.h"
#include
#define CLOCK_RADIUS 50
#define CLOCK_LINE_WIDTH 10
#define CLOCK_LINE_PADDING 10
#define EXTRA_SPACE 2
typedef struct _CcClock CcClock;
struct _CcClock
{
GtkWidget parent_instance;
guint duration;
gint64 start_time;
gboolean running;
};
enum
{
PROP_DURATION = 1,
N_PROPS
};
static GParamSpec *props[N_PROPS] = { 0, };
enum {
FINISHED,
N_SIGNALS
};
static guint signals[N_SIGNALS] = { 0, };
G_DEFINE_TYPE (CcClock, cc_clock, GTK_TYPE_WIDGET)
static gint64
cc_clock_get_time_diff (CcClock *clock)
{
GdkFrameClock *frame_clock;
gint64 current_time;
frame_clock = gtk_widget_get_frame_clock (GTK_WIDGET (clock));
current_time = gdk_frame_clock_get_frame_time (frame_clock);
return current_time - clock->start_time;
}
static gdouble
cc_clock_get_angle (CcClock *clock)
{
gint64 time_diff;
time_diff = cc_clock_get_time_diff (clock);
if (time_diff > clock->duration * 1000)
return 360;
return ((gdouble) time_diff / (clock->duration * 1000)) * 360;
}
static void
cc_clock_snapshot (GtkWidget *widget,
GtkSnapshot *snapshot)
{
GtkAllocation allocation;
cairo_t *cr;
gdouble angle;
gtk_widget_get_allocation (widget, &allocation);
angle = cc_clock_get_angle (CC_CLOCK (widget));
cr = gtk_snapshot_append_cairo (snapshot,
&GRAPHENE_RECT_INIT (0, 0, allocation.width, allocation.height));
/* Draw the clock background */
cairo_arc (cr, allocation.width / 2, allocation.height / 2, CLOCK_RADIUS / 2, 0.0, 2.0 * M_PI);
cairo_set_source_rgb (cr, 0.5, 0.5, 0.5);
cairo_fill_preserve (cr);
cairo_stroke (cr);
cairo_set_line_width (cr, CLOCK_LINE_WIDTH);
cairo_arc (cr,
allocation.width / 2,
allocation.height / 2,
(CLOCK_RADIUS - CLOCK_LINE_WIDTH - CLOCK_LINE_PADDING) / 2,
3 * M_PI_2,
3 * M_PI_2 + angle * M_PI / 180.0);
cairo_set_source_rgb (cr, 1.0, 1.0, 1.0);
cairo_stroke (cr);
}
static void
cc_clock_stop (CcClock *clock)
{
GdkFrameClock *frame_clock;
if (!clock->running)
return;
frame_clock = gtk_widget_get_frame_clock (GTK_WIDGET (clock));
gdk_frame_clock_end_updating (frame_clock);
clock->running = FALSE;
}
static void
on_frame_clock_update (CcClock *clock)
{
gint64 time_diff;
if (!clock->running)
return;
time_diff = cc_clock_get_time_diff (clock);
if (time_diff > clock->duration * 1000)
{
g_signal_emit (clock, signals[FINISHED], 0);
cc_clock_stop (clock);
}
gtk_widget_queue_draw (GTK_WIDGET (clock));
}
static void
cc_clock_map (GtkWidget *widget)
{
GdkFrameClock *frame_clock;
GTK_WIDGET_CLASS (cc_clock_parent_class)->map (widget);
frame_clock = gtk_widget_get_frame_clock (widget);
g_signal_connect_object (frame_clock, "update",
G_CALLBACK (on_frame_clock_update),
widget, G_CONNECT_SWAPPED);
cc_clock_reset (CC_CLOCK (widget));
}
static void
cc_clock_set_property (GObject *object,
guint prop_id,
const GValue *value,
GParamSpec *pspec)
{
CcClock *clock = CC_CLOCK (object);
switch (prop_id)
{
case PROP_DURATION:
clock->duration = g_value_get_uint (value);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static void
cc_clock_get_property (GObject *object,
guint prop_id,
GValue *value,
GParamSpec *pspec)
{
CcClock *clock = CC_CLOCK (object);
switch (prop_id)
{
case PROP_DURATION:
g_value_set_uint (value, clock->duration);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static void
cc_clock_measure (GtkWidget *widget,
GtkOrientation orientation,
gint for_size,
gint *minimum,
gint *natural,
gint *minimum_baseline,
gint *natural_baseline)
{
if (minimum)
*minimum = CLOCK_RADIUS + EXTRA_SPACE;
if (natural)
*natural = CLOCK_RADIUS + EXTRA_SPACE;
}
static void
cc_clock_class_init (CcClockClass *klass)
{
GtkWidgetClass *widget_class = GTK_WIDGET_CLASS (klass);
GObjectClass *object_class = G_OBJECT_CLASS (klass);
object_class->set_property = cc_clock_set_property;
object_class->get_property = cc_clock_get_property;
widget_class->map = cc_clock_map;
widget_class->snapshot = cc_clock_snapshot;
widget_class->measure = cc_clock_measure;
signals[FINISHED] =
g_signal_new ("finished",
CC_TYPE_CLOCK,
G_SIGNAL_RUN_LAST,
0, NULL, NULL, NULL,
G_TYPE_NONE, 0);
props[PROP_DURATION] =
g_param_spec_uint ("duration",
"Duration",
"Duration",
0, G_MAXUINT, 0,
G_PARAM_READWRITE |
G_PARAM_STATIC_STRINGS |
G_PARAM_CONSTRUCT_ONLY);
g_object_class_install_properties (object_class, N_PROPS, props);
}
static void
cc_clock_init (CcClock *clock)
{
}
GtkWidget *
cc_clock_new (guint duration)
{
return g_object_new (CC_TYPE_CLOCK,
"duration", duration,
NULL);
}
void
cc_clock_reset (CcClock *clock)
{
GdkFrameClock *frame_clock;
if (!gtk_widget_get_mapped (GTK_WIDGET (clock)))
return;
frame_clock = gtk_widget_get_frame_clock (GTK_WIDGET (clock));
cc_clock_stop (clock);
clock->running = TRUE;
clock->start_time = g_get_monotonic_time ();
gdk_frame_clock_begin_updating (frame_clock);
}
void
cc_clock_set_duration (CcClock *clock,
guint duration)
{
clock->duration = duration;
g_object_notify (G_OBJECT (clock), "duration");
cc_clock_reset (clock);
}
guint
cc_clock_get_duration (CcClock *clock)
{
return clock->duration;
}