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gtk-demo: Use gdk_frame_clock_get_fps

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Remove another copy of this code in the theme
switching benchmark.
This commit is contained in:
Matthias Clasen 2020-09-13 23:42:13 -04:00
parent c462f35a5e
commit c66a8cb941
2 changed files with 6 additions and 72 deletions
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72
demos/gtk-demo/themes.c
View File

@ -10,76 +10,6 @@
static guint tick_cb;
static gint64
guess_refresh_interval (GdkFrameClock *frame_clock)
{
gint64 interval;
gint64 i;
interval = G_MAXINT64;
for (i = gdk_frame_clock_get_history_start (frame_clock);
i < gdk_frame_clock_get_frame_counter (frame_clock);
i++)
{
GdkFrameTimings *t, *before;
gint64 ts, before_ts;
t = gdk_frame_clock_get_timings (frame_clock, i);
before = gdk_frame_clock_get_timings (frame_clock, i - 1);
if (t == NULL || before == NULL)
continue;
ts = gdk_frame_timings_get_frame_time (t);
before_ts = gdk_frame_timings_get_frame_time (before);
if (ts == 0 || before_ts == 0)
continue;
interval = MIN (interval, ts - before_ts);
}
if (interval == G_MAXINT64)
return 0;
return interval;
}
static double
frame_clock_get_fps (GdkFrameClock *frame_clock)
{
GdkFrameTimings *start, *end;
gint64 start_counter, end_counter;
gint64 start_timestamp, end_timestamp;
gint64 interval;
start_counter = gdk_frame_clock_get_history_start (frame_clock);
end_counter = gdk_frame_clock_get_frame_counter (frame_clock);
start = gdk_frame_clock_get_timings (frame_clock, start_counter);
for (end = gdk_frame_clock_get_timings (frame_clock, end_counter);
end_counter > start_counter && end != NULL && !gdk_frame_timings_get_complete (end);
end = gdk_frame_clock_get_timings (frame_clock, end_counter))
end_counter--;
if (end_counter - start_counter < 4)
return 0.0;
start_timestamp = gdk_frame_timings_get_presentation_time (start);
end_timestamp = gdk_frame_timings_get_presentation_time (end);
if (start_timestamp == 0 || end_timestamp == 0)
{
start_timestamp = gdk_frame_timings_get_frame_time (start);
end_timestamp = gdk_frame_timings_get_frame_time (end);
}
interval = gdk_frame_timings_get_refresh_interval (end);
if (interval == 0)
{
interval = guess_refresh_interval (frame_clock);
if (interval == 0)
return 0.0;
}
return ((double) end_counter - start_counter) * G_USEC_PER_SEC / (end_timestamp - start_timestamp);
}
typedef struct {
const char *name;
gboolean dark;
@ -116,7 +46,7 @@ change_theme (GtkWidget *widget,
{
char *fps;
fps = g_strdup_printf ("%.2f fps", frame_clock_get_fps (frame_clock));
fps = g_strdup_printf ("%.2f fps", gdk_frame_clock_get_fps (frame_clock));
gtk_label_set_label (GTK_LABEL (label), fps);
g_free (fps);
}

6
demos/gtk-demo/themes.ui
View File

@ -19,7 +19,11 @@
</object>
</child>
<child type="end">
<object class="GtkLabel" id="fps"/>
<object class="GtkLabel" id="fps">
<attributes>
<attribute name="font-features" value="tnum=1"/>
</attributes>
</object>
</child>
</object>
</child>