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libsysprof-gtk: improve ruler point placement

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This makes it so we generate better labels and position them at better
(more useful) points in time relative to the document start.
This commit is contained in:
Christian Hergert
2023-07-13 15:31:43 -07:00
parent e55d74d80c
commit 7ea03a3969
1 changed files with 57 additions and 24 deletions
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81
src/libsysprof-gtk/sysprof-time-ruler.c
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@ -47,10 +47,12 @@ sysprof_time_ruler_snapshot (GtkWidget *widget,
{
SysprofTimeRuler *self = (SysprofTimeRuler *)widget;
const SysprofTimeSpan *visible_time;
const SysprofTimeSpan *document_time;
PangoLayout *layout;
gint64 tick_interval;
gint64 time_range;
guint n_groups;
gint64 rem;
int last_x = G_MININT;
int width;
int height;
GdkRGBA color;
@ -75,45 +77,72 @@ sysprof_time_ruler_snapshot (GtkWidget *widget,
}
G_GNUC_BEGIN_IGNORE_DEPRECATIONS
document_time = sysprof_session_get_document_time (self->session);
visible_time = sysprof_session_get_visible_time (self->session);
n_groups = MAX (width / GROUP_SIZE, 1);
time_range = visible_time->end_nsec - visible_time->begin_nsec;
tick_interval = time_range / n_groups;
time_range = sysprof_time_span_duration (*visible_time);
layout = gtk_widget_create_pango_layout (widget, NULL);
for (gint64 t = visible_time->begin_nsec - (visible_time->begin_nsec % tick_interval);
if (time_range > SYSPROF_NSEC_PER_SEC*60)
tick_interval = SYSPROF_NSEC_PER_SEC*10;
else if (time_range > SYSPROF_NSEC_PER_SEC*30)
tick_interval = SYSPROF_NSEC_PER_SEC*5;
else if (time_range > SYSPROF_NSEC_PER_SEC*15)
tick_interval = SYSPROF_NSEC_PER_SEC*2.5;
else if (time_range > SYSPROF_NSEC_PER_SEC*5)
tick_interval = SYSPROF_NSEC_PER_SEC;
else if (time_range > SYSPROF_NSEC_PER_SEC*2.5)
tick_interval = SYSPROF_NSEC_PER_SEC*.5;
else if (time_range > SYSPROF_NSEC_PER_SEC)
tick_interval = SYSPROF_NSEC_PER_SEC*.25;
else if (time_range > SYSPROF_NSEC_PER_SEC*.5)
tick_interval = SYSPROF_NSEC_PER_SEC*.1;
else if (time_range > SYSPROF_NSEC_PER_SEC*.25)
tick_interval = SYSPROF_NSEC_PER_SEC*.05;
else if (time_range > SYSPROF_NSEC_PER_SEC*.1)
tick_interval = SYSPROF_NSEC_PER_SEC*.02;
else if (time_range > SYSPROF_NSEC_PER_SEC*.05)
tick_interval = SYSPROF_NSEC_PER_SEC*.01;
else
tick_interval = SYSPROF_NSEC_PER_SEC / 10000;
rem = (visible_time->begin_nsec - document_time->begin_nsec) % tick_interval;
for (gint64 t = visible_time->begin_nsec + rem;
t < visible_time->end_nsec;
t += tick_interval)
{
gint64 o = t - visible_time->begin_nsec;
gint64 r = t - document_time->begin_nsec;
double x = (o / (double)time_range) * width;
int pw, ph;
char str[32];
if (x < 0)
continue;
if (x >= 0 && x >= last_x)
{
if (r == 0)
g_snprintf (str, sizeof str, "%.3lfs", .0);
else if (r < 1000000)
g_snprintf (str, sizeof str, "%.3lfμs", r/1000.);
else if (r < SYSPROF_NSEC_PER_SEC)
g_snprintf (str, sizeof str, "%.3lfms", r/1000000.);
else
g_snprintf (str, sizeof str, "%.3lfs", r/(double)SYSPROF_NSEC_PER_SEC);
if (o == 0)
g_snprintf (str, sizeof str, "%.3lfs", .0);
else if (o < 1000000)
g_snprintf (str, sizeof str, "%.3lfμs", o/1000.);
else if (o < SYSPROF_NSEC_PER_SEC)
g_snprintf (str, sizeof str, "%.3lfms", o/1000000.);
else
g_snprintf (str, sizeof str, "%.3lfs", o/(double)SYSPROF_NSEC_PER_SEC);
pango_layout_set_text (layout, str, -1);
pango_layout_get_pixel_size (layout, &pw, &ph);
pango_layout_set_text (layout, str, -1);
pango_layout_get_pixel_size (layout, &pw, &ph);
gtk_snapshot_save (snapshot);
gtk_snapshot_translate (snapshot, &GRAPHENE_POINT_INIT (x-pw-6, (height-ph)/2));
gtk_snapshot_append_layout (snapshot, layout, &color);
gtk_snapshot_restore (snapshot);
gtk_snapshot_save (snapshot);
gtk_snapshot_translate (snapshot, &GRAPHENE_POINT_INIT (x-pw-6, (height-ph)/2));
gtk_snapshot_append_layout (snapshot, layout, &color);
gtk_snapshot_restore (snapshot);
}
gtk_snapshot_append_color (snapshot,
&line_color,
&GRAPHENE_RECT_INIT (x, 0, 1, height));
last_x = x + pw;
}
g_object_unref (layout);
@ -285,9 +314,11 @@ sysprof_time_ruler_get_label_at_point (SysprofTimeRuler *self,
double x)
{
char str[32];
const SysprofTimeSpan *document_time;
const SysprofTimeSpan *visible;
gint64 duration;
gint64 o;
int width;
g_return_val_if_fail (SYSPROF_IS_TIME_RULER (self), NULL);
@ -300,11 +331,13 @@ sysprof_time_ruler_get_label_at_point (SysprofTimeRuler *self,
if (self->session == NULL)
return NULL;
if (!(visible = sysprof_session_get_visible_time (self->session)) ||
if (!(document_time = sysprof_session_get_document_time (self->session)) ||
!(visible = sysprof_session_get_visible_time (self->session)) ||
!(duration = sysprof_time_span_duration (*visible)))
return NULL;
o = (x / (double)gtk_widget_get_width (GTK_WIDGET (self))) * duration;
width = gtk_widget_get_width (GTK_WIDGET (self));
o = visible->begin_nsec + (x / (double)width * duration) - document_time->begin_nsec;
if (o == 0)
g_snprintf (str, sizeof str, "%.3lfs", .0);