mirror of
https://gitlab.gnome.org/GNOME/gtk.git
synced 2024-12-27 06:00:22 +00:00
d701a89281
Language bindings—especially ones based on introspection—cannot deal with custom type hiearchies. Luckily for us, GType has a derivable type with low overhead: GTypeInstance. By turning GskRenderNode into a GTypeInstance, and creating derived types for each class of node, we can provide an introspectable API to our non-C API consumers, with no functional change to the C API itself.
52 lines
1.1 KiB
C
52 lines
1.1 KiB
C
|
|
#include <glib/gprintf.h>
|
|
#include "gskglnodesampleprivate.h"
|
|
#include "gskrendernodeprivate.h"
|
|
|
|
void
|
|
node_sample_init (NodeSample *self)
|
|
{
|
|
memset (self->nodes, 0, sizeof (self->nodes));
|
|
self->count = 0;
|
|
}
|
|
|
|
void
|
|
node_sample_reset (NodeSample *self)
|
|
{
|
|
node_sample_init (self);
|
|
}
|
|
|
|
void
|
|
node_sample_add (NodeSample *self,
|
|
GskRenderNode *node)
|
|
{
|
|
const guint node_type = gsk_render_node_get_node_type (node);
|
|
|
|
g_assert (node_type <= N_NODE_TYPES);
|
|
|
|
if (self->nodes[node_type].class_name == NULL)
|
|
self->nodes[node_type].class_name = g_type_name_from_instance ((GTypeInstance *) node);
|
|
|
|
self->nodes[node_type].count ++;
|
|
self->count ++;
|
|
}
|
|
|
|
void
|
|
node_sample_print (const NodeSample *self,
|
|
const char *prefix)
|
|
{
|
|
guint i;
|
|
|
|
g_printf ("%s:\n", prefix);
|
|
|
|
for (i = 0; i < N_NODE_TYPES; i ++)
|
|
{
|
|
if (self->nodes[i].count > 0)
|
|
{
|
|
double p = (double)self->nodes[i].count / (double)self->count;
|
|
|
|
g_printf ("%s: %u (%.2f%%)\n", self->nodes[i].class_name, self->nodes[i].count, p * 100.0);
|
|
}
|
|
}
|
|
}
|