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[script] Extend csi-replay to show how to use a single surface

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Currently the replay creates a fresh surface for every new surface. Whilst
using it to view replays (such as with --xlib) this is often not what is
desired so add a mode (compile-time only for now) to use similar surfaces
and blits to the front buffer instead.
This commit is contained in:
Chris Wilson 2009-08-06 23:17:06 +01:00
parent b7639a5f79
commit af392f7e45
1 changed files with 72 additions and 1 deletions
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73
util/cairo-script/csi-replay.c
View file

@ -7,6 +7,58 @@
static const cairo_user_data_key_t _key;
#define SINGLE_SURFACE 1
#if SINGLE_SURFACE
static cairo_surface_t *
_similar_surface_create (void *closure,
cairo_content_t content,
double width, double height)
{
return cairo_surface_create_similar (closure, content, width, height);
}
static struct list {
struct list *next;
cairo_t *context;
cairo_surface_t *surface;
} *list;
static cairo_t *
_context_create (void *closure, cairo_surface_t *surface)
{
cairo_t *cr = cairo_create (surface);
struct list *l = malloc (sizeof (*l));
l->next = list;
l->context = cr;
l->surface = cairo_surface_reference (surface);
list = l;
return cr;
}
static void
_context_destroy (void *closure, void *ptr)
{
struct list *l, **prev = &list;
while ((l = *prev) != NULL) {
if (l->context == ptr) {
if (cairo_surface_status (l->surface) == CAIRO_STATUS_SUCCESS) {
cairo_t *cr = cairo_create (closure);
cairo_set_source_surface (cr, l->surface, 0, 0);
cairo_paint (cr);
cairo_destroy (cr);
}
cairo_surface_destroy (l->surface);
*prev = l->next;
free (l);
return;
}
prev = &l->next;
}
}
#endif
#if CAIRO_HAS_XLIB_SURFACE
#include <cairo-xlib.h>
static Display *
@ -216,7 +268,11 @@ main (int argc, char **argv)
{
cairo_script_interpreter_t *csi;
cairo_script_interpreter_hooks_t hooks = {
#if CAIRO_HAS_XLIB_XRENDER_SURFACE
#if SINGLE_SURFACE
.surface_create = _similar_surface_create,
.context_create = _context_create,
.context_destroy = _context_destroy
#elif CAIRO_HAS_XLIB_XRENDER_SURFACE
.surface_create = _xrender_surface_create
#elif CAIRO_HAS_XLIB_SURFACE
.surface_create = _xlib_surface_create
@ -257,6 +313,13 @@ main (int argc, char **argv)
{ NULL, NULL }
};
#if SINGLE_SURFACE
hooks.closure = backends[0].create (NULL,
CAIRO_CONTENT_COLOR_ALPHA,
512, 512);
#endif
csi = cairo_script_interpreter_create ();
cairo_script_interpreter_install_hooks (csi, &hooks);
@ -265,7 +328,14 @@ main (int argc, char **argv)
for (b = backends; b->name != NULL; b++) {
if (strcmp (b->name, argv[i]) == 0) {
#if SINGLE_SURFACE
cairo_surface_destroy (hooks.closure);
hooks.closure = b->create (NULL,
CAIRO_CONTENT_COLOR_ALPHA,
512, 512);
#else
hooks.surface_create = b->create;
#endif
cairo_script_interpreter_install_hooks (csi, &hooks);
break;
}
@ -274,6 +344,7 @@ main (int argc, char **argv)
if (b->name == NULL)
cairo_script_interpreter_run (csi, argv[i]);
}
cairo_surface_destroy (hooks.closure);
return cairo_script_interpreter_destroy (csi);
}