mutter/tests/test-multistage.c
Emmanuele Bassi 101a3cac4e 2008-05-12 Emmanuele Bassi <ebassi@openedhand.com>
Rework the stage wrapper/implementation relation: remove
	duplicated code and all the bookkeeping from the backends into
	ClutterStage whenever possible, to reduce the amount of	work a
	backend must do (and possibly get wrong). Thanks to Tommi
	Komulainen.

	* clutter/clutter-main.c:
	(clutter_init_with_args), (clutter_init): Realize the default
	stage after creation. The default stage is special, because we
	use it in the initialization sequence. This removes the burden
	from the backends and reduces the things a backend can get
	wrong.

	* clutter/clutter-stage.c:
	(clutter_stage_show): Make sure to realize the implementation if
	it hasn't been realized yet.

	(clutter_stage_realize): Set the REALIZED flag and call
	clutter_stage_ensure_current() if the implementation was
	successfully realized.

	(clutter_stage_unrealized): Call clutter_stage_ensure_current()
	on unrealize.

	* clutter/glx/clutter-backend-glx.c:
	(clutter_backend_glx_create_stage): Do not realize the stage anymore
	when creating it, and let the normal realization sequence take
	place.

	(clutter_backend_glx_ensure_context): Trap for X11 errors.

	* clutter/glx/clutter-stage-glx.c:
	(clutter_stage_glx_realize): Chain up to the X11 implementation
	so that we can set up the window state (title, cursor visibility)
	when we actually have a X window. Also, do not call
	clutter_stage_ensure_current(), and rely on the wrapper to do
	it for us. This means we can drop setting the REALIZED flag on
	the wrapper.

	(clutter_stage_glx_unrealize): Do not call
	clutter_stage_ensure_current() ourselves, and rely on the wrapper
	to do it for us.

	* clutter/x11/clutter-stage-x11.c:
	(set_wm_title),	(set_cursor_visible): Move the WM title and
	cursor visibility code inside their own functions.

	(clutter_stage_x11_realize): Set the window title and whether the
	cursor is visible or not after realizing the stage.

	(clutter_stage_x11_set_cursor_visible),
	(clutter_stage_x11_set_title): Call set_wm_title() and
	set_cursor_visible().

	(clutter_stage_x11_finalize): Free the title string.

	* clutter/x11/clutter-stage-x11.h: Save more of the stage state,
	so that we can set it even when the stage hasn't been realized
	yet.

	* clutter/eglnative/clutter-backend-egl.c:
	(clutter_backend_egl_create_stage):
	* clutter/eglnative/clutter-stage-egl.c:
	(clutter_stage_egl_unrealize),
	(clutter_stage_egl_realize): Update the eglnative backend.

	* clutter/eglx/clutter-backend-egl.c:
	(clutter_backend_egl_ensure_context),
	(clutter_backend_egl_create_stage):
	* clutter/eglx/clutter-stage-egl.c:
	(clutter_stage_egl_unrealize),
	(clutter_stage_egl_realize): Update the eglx backend.

	* clutter/sdl/clutter-backend-sdl.c:
	(clutter_backend_sdl_create_stage):
	* clutter/sdl/clutter-stage-sdl.c:
	(clutter_stage_sdl_realize): Update the sdl backend.

	* clutter/fruity/clutter-backend-fruity.c:
	(clutter_backend_fruity_create_stage):
	* clutter/sdl/clutter-stage-fruity.c:
	(clutter_stage_fruity_realize): Update the fruity backend.

	* tests/test-multistage.c (on_button_press): Bail out if
	clutter_stage_new() returns NULL.

	* HACKING.backends: Update backend writing documentation.
2008-05-12 15:26:37 +00:00

132 lines
3.9 KiB
C

#include <clutter/clutter.h>
static gint n_stages = 1;
static gboolean
tex_button_cb (ClutterActor *actor,
ClutterEvent *event,
gpointer data)
{
clutter_actor_hide (actor);
}
static gboolean
on_button_press (ClutterActor *actor,
ClutterEvent *event,
gpointer data)
{
ClutterActor *new_stage;
ClutterActor *label, *tex;
gint width, height;
gchar *stage_label, *win_title;
ClutterColor color = { 0xdd, 0x33, 0xdd, 0xff };
ClutterColor white = { 0x99, 0x99, 0x99, 0xff };
ClutterTimeline *timeline;
ClutterAlpha *alpha;
ClutterBehaviour *r_behave;
new_stage = clutter_stage_new ();
if (!new_stage)
return FALSE;
/* FIXME: below should really be automatic */
/* clutter_stage_ensure_cogl_context (CLUTTER_STAGE(new_stage)); */
clutter_stage_set_color (CLUTTER_STAGE (new_stage), &color);
clutter_actor_set_size (new_stage, 320, 240);
tex = clutter_texture_new_from_file ("redhand.png", NULL);
if (!tex)
g_error ("pixbuf load failed");
clutter_actor_set_reactive (tex, TRUE);
g_signal_connect (tex, "button-press-event",
G_CALLBACK (tex_button_cb), NULL);
clutter_container_add_actor (CLUTTER_CONTAINER (new_stage), tex);
stage_label = g_strdup_printf ("<b>Stage: %d</b>", ++n_stages);
label = clutter_label_new_with_text ("Mono 12", stage_label);
clutter_label_set_color (CLUTTER_LABEL (label), &white);
clutter_label_set_use_markup (CLUTTER_LABEL (label), TRUE);
width = (clutter_actor_get_width (new_stage)
- clutter_actor_get_width (label)) / 2;
height = (clutter_actor_get_height (new_stage)
- clutter_actor_get_height (label)) / 2;
clutter_actor_set_position (label, width, height);
clutter_container_add_actor (CLUTTER_CONTAINER (new_stage), label);
clutter_actor_show (label);
g_free (stage_label);
/*
g_signal_connect (new_stage, "button-press-event",
G_CALLBACK (clutter_actor_destroy),
NULL);
*/
win_title = g_strdup_printf ("Stage:%p", new_stage);
clutter_stage_set_title (CLUTTER_STAGE(new_stage), win_title);
timeline = clutter_timeline_new_for_duration (2000);
g_object_set (timeline, "loop", TRUE, NULL);
alpha = clutter_alpha_new_full (timeline,
CLUTTER_ALPHA_RAMP_INC,
NULL, NULL);
r_behave = clutter_behaviour_rotate_new (alpha,
CLUTTER_Y_AXIS,
CLUTTER_ROTATE_CW,
0.0, 360.0);
clutter_behaviour_rotate_set_center (CLUTTER_BEHAVIOUR_ROTATE (r_behave),
clutter_actor_get_width (label)/2,
0,
0);
clutter_behaviour_apply (r_behave, label);
clutter_timeline_start (timeline);
clutter_actor_show_all (new_stage);
return TRUE;
}
int
main (int argc, char *argv[])
{
ClutterActor *stage_default;
ClutterActor *label;
gint width, height;
gchar *win_title;
clutter_init (&argc, &argv);
stage_default = clutter_stage_get_default ();
g_signal_connect (stage_default, "button-press-event",
G_CALLBACK (on_button_press),
NULL);
label = clutter_label_new_with_text ("Mono 16", "Default stage");
width = (clutter_actor_get_width (stage_default)
- clutter_actor_get_width (label))
/ 2;
height = (clutter_actor_get_height (stage_default)
- clutter_actor_get_height (label))
/ 2;
clutter_actor_set_position (label, width, height);
clutter_container_add_actor (CLUTTER_CONTAINER (stage_default), label);
clutter_actor_show (label);
win_title = g_strdup_printf ("Stage:%p", stage_default);
clutter_stage_set_title (CLUTTER_STAGE(stage_default), win_title);
clutter_actor_show (stage_default);
clutter_main ();
return 0;
}