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libsysprof-ui: add units display for line graphs

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This commit is contained in:
Christian Hergert
2019-07-31 15:55:19 -07:00
parent 98fd2fe35d
commit 12866c4e15
1 changed files with 49 additions and 2 deletions
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51
src/libsysprof-ui/sysprof-line-visualizer.c
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@ -49,6 +49,9 @@ typedef struct
*/
PointCache *cache;
/* The format for units (such as mHz, Watts, etc). */
gchar *units;
/*
* Range of the scale for lower and upper.
*/
@ -105,6 +108,7 @@ enum {
PROP_0,
PROP_Y_LOWER,
PROP_Y_UPPER,
PROP_UNITS,
N_PROPS
};
@ -141,9 +145,12 @@ static gboolean
sysprof_line_visualizer_draw (GtkWidget *widget,
cairo_t *cr)
{
static PangoAttrList *attrs = NULL;
SysprofLineVisualizer *self = (SysprofLineVisualizer *)widget;
SysprofLineVisualizerPrivate *priv = sysprof_line_visualizer_get_instance_private (self);
g_autofree gchar *upper = NULL;
GtkStyleContext *style_context;
PangoLayout *layout;
GtkStateFlags flags;
GtkAllocation alloc;
GdkRectangle clip;
@ -260,6 +267,28 @@ sysprof_line_visualizer_draw (GtkWidget *widget,
}
}
if (!attrs)
{
attrs = pango_attr_list_new ();
pango_attr_list_insert (attrs, pango_attr_scale_new (0.666));
}
if (priv->y_upper != 100.0)
{
if (priv->units)
upper = g_strdup_printf ("%lg %s", priv->y_upper, priv->units);
else
upper = g_strdup_printf ("%lg", priv->y_upper);
layout = gtk_widget_create_pango_layout (widget, upper);
pango_layout_set_attributes (layout, attrs);
cairo_move_to (cr, 2, 2);
foreground.alpha *= 0.5;
gdk_cairo_set_source_rgba (cr, &foreground);
pango_cairo_show_layout (cr, layout);
g_clear_object (&layout);
}
return ret;
}
@ -356,6 +385,7 @@ sysprof_line_visualizer_finalize (GObject *object)
SysprofLineVisualizer *self = (SysprofLineVisualizer *)object;
SysprofLineVisualizerPrivate *priv = sysprof_line_visualizer_get_instance_private (self);
g_clear_pointer (&priv->units, g_free);
g_clear_pointer (&priv->lines, g_array_unref);
g_clear_pointer (&priv->cache, point_cache_unref);
g_clear_pointer (&priv->reader, sysprof_capture_reader_unref);
@ -388,6 +418,10 @@ sysprof_line_visualizer_get_property (GObject *object,
g_value_set_double (value, priv->y_upper);
break;
case PROP_UNITS:
g_value_set_string (value, priv->units);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
}
@ -407,13 +441,19 @@ sysprof_line_visualizer_set_property (GObject *object,
case PROP_Y_LOWER:
priv->y_lower = g_value_get_double (value);
priv->y_lower_set = TRUE;
gtk_widget_queue_resize (GTK_WIDGET (self));
gtk_widget_queue_allocate (GTK_WIDGET (self));
break;
case PROP_Y_UPPER:
priv->y_upper = g_value_get_double (value);
priv->y_upper_set = TRUE;
gtk_widget_queue_resize (GTK_WIDGET (self));
gtk_widget_queue_allocate (GTK_WIDGET (self));
break;
case PROP_UNITS:
g_free (priv->units);
priv->units = g_value_dup_string (value);
gtk_widget_queue_allocate (GTK_WIDGET (self));
break;
default:
@ -454,6 +494,13 @@ sysprof_line_visualizer_class_init (SysprofLineVisualizerClass *klass)
100.0,
(G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
properties [PROP_UNITS] =
g_param_spec_string ("units",
"Units",
"The format for units (mHz, Watts, etc)",
NULL,
(G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
g_object_class_install_properties (object_class, N_PROPS, properties);
}