mutter/tests/interactive/test-paint-wrapper.c
Neil Roberts c68cf3564e [test-paint-wrapper] Use a separate paint guard for each actor
Since commit c7c5cf9b ClutterCloneTexture causes an extra paint of the
source actor during the paint run of the cloned texture if the source
is not yet visible. When the stage is first shown it is redrawn
immediatly before it is mapped which means get_paint_visibility will
fail on the source actor so the inner paint will be run. The paint
guards were a global variable so they didn't cope with a second actor
being painted.

The breakage didn't occur until commit d510a4b0 because
get_paint_visibility was also broken.
2008-12-15 16:33:45 +00:00

308 lines
7.4 KiB
C

#include <gmodule.h>
#include <clutter/clutter.h>
#if defined (_MSC_VER) && !defined (_USE_MATH_DEFINES)
#define _USE_MATH_DEFINES
#endif
#include <math.h>
#include <errno.h>
#include <stdlib.h>
#include <glib.h>
#define TRAILS 0
#define NHANDS 6
#define RADIUS ((CLUTTER_STAGE_WIDTH()+CLUTTER_STAGE_HEIGHT())/NHANDS)
typedef struct SuperOH
{
ClutterActor **hand, *bgtex;
ClutterActor *group;
gboolean *paint_guards;
} SuperOH;
static gint n_hands = NHANDS;
static GOptionEntry super_oh_entries[] = {
{
"num-hands", 'n',
0,
G_OPTION_ARG_INT, &n_hands,
"Number of hands", "HANDS"
},
{ NULL }
};
static gint
get_radius (void)
{
return (CLUTTER_STAGE_HEIGHT() + CLUTTER_STAGE_HEIGHT()) / n_hands ;
}
/* input handler */
static gboolean
input_cb (ClutterStage *stage,
ClutterEvent *event,
gpointer data)
{
if (event->type == CLUTTER_BUTTON_PRESS)
{
ClutterButtonEvent *button_event;
ClutterActor *e;
gint x, y;
clutter_event_get_coords (event, &x, &y);
button_event = (ClutterButtonEvent *) event;
g_print ("*** button press event (button:%d) ***\n",
button_event->button);
e = clutter_stage_get_actor_at_pos (stage, x, y);
if (e && (CLUTTER_IS_TEXTURE (e) || CLUTTER_IS_CLONE_TEXTURE (e)))
{
clutter_actor_hide (e);
return TRUE;
}
}
else if (event->type == CLUTTER_KEY_RELEASE)
{
ClutterKeyEvent *kev = (ClutterKeyEvent *) event;
g_print ("*** key press event (key:%c) ***\n",
clutter_key_event_symbol (kev));
if (clutter_key_event_symbol (kev) == CLUTTER_q)
{
clutter_main_quit ();
return TRUE;
}
}
return FALSE;
}
/* Timeline handler */
static void
frame_cb (ClutterTimeline *timeline,
gint frame_num,
gpointer data)
{
SuperOH *oh = (SuperOH *)data;
gint i;
/* Rotate everything clockwise about stage center*/
clutter_actor_set_rotation (CLUTTER_ACTOR (oh->group),
CLUTTER_Z_AXIS,
frame_num,
CLUTTER_STAGE_WIDTH () / 2,
CLUTTER_STAGE_HEIGHT () / 2,
0);
for (i = 0; i < n_hands; i++)
{
gdouble scale_x, scale_y;
clutter_actor_get_scale (oh->hand[i], &scale_x, &scale_y);
/* Rotate each hand around there centers - to get this we need
* to take into account any scaling.
*
* FIXME: scaling causes drift so disabled for now. Need rotation
* unit based functions to fix.
*/
clutter_actor_set_rotation (oh->hand[i], CLUTTER_Z_AXIS,
- 6.0 * frame_num, 0, 0, 0);
}
}
static void
hand_pre_paint (ClutterActor *actor,
gpointer user_data)
{
SuperOH *oh = (SuperOH *) user_data;
guint w, h;
int actor_num;
for (actor_num = 0; oh->hand[actor_num] != actor; actor_num++);
g_assert (oh->paint_guards[actor_num] == FALSE);
clutter_actor_get_size (actor, &w, &h);
cogl_set_source_color4ub (255, 0, 0, 128);
cogl_rectangle (0, 0, w / 2, h / 2);
oh->paint_guards[actor_num] = TRUE;
}
static void
hand_post_paint (ClutterActor *actor,
gpointer user_data)
{
SuperOH *oh = (SuperOH *) user_data;
guint w, h;
int actor_num;
for (actor_num = 0; oh->hand[actor_num] != actor; actor_num++);
g_assert (oh->paint_guards[actor_num] == TRUE);
clutter_actor_get_size (actor, &w, &h);
cogl_set_source_color4ub (0, 255, 0, 128);
cogl_rectangle (w / 2, h / 2, w / 2, h / 2);
oh->paint_guards[actor_num] = FALSE;
}
G_MODULE_EXPORT int
test_paint_wrapper_main (int argc, char *argv[])
{
ClutterTimeline *timeline;
ClutterAlpha *alpha;
ClutterBehaviour *scaler_1, *scaler_2;
ClutterActor *stage;
ClutterColor stage_color = { 0x61, 0x64, 0x8c, 0xff };
SuperOH *oh;
gint i;
GError *error;
error = NULL;
clutter_init_with_args (&argc, &argv,
NULL,
super_oh_entries,
NULL,
&error);
if (error)
{
g_warning ("Unable to initialise Clutter:\n%s",
error->message);
g_error_free (error);
exit (1);
}
stage = clutter_stage_get_default ();
clutter_actor_set_size (stage, 800, 600);
clutter_stage_set_title (CLUTTER_STAGE (stage), "Actors Test");
clutter_stage_set_color (CLUTTER_STAGE (stage),
&stage_color);
oh = g_new(SuperOH, 1);
/* Create a timeline to manage animation */
timeline = clutter_timeline_new (360, 60); /* num frames, fps */
g_object_set (timeline, "loop", TRUE, NULL); /* have it loop */
/* fire a callback for frame change */
g_signal_connect (timeline, "new-frame", G_CALLBACK (frame_cb), oh);
/* Set up some behaviours to handle scaling */
alpha = clutter_alpha_new_full (timeline, clutter_sine_func, NULL, NULL);
scaler_1 = clutter_behaviour_scale_new (alpha,
0.5, 0.5,
1.0, 1.0);
scaler_2 = clutter_behaviour_scale_new (alpha,
1.0, 1.0,
0.5, 0.5);
/* create a new group to hold multiple actors in a group */
oh->group = clutter_group_new();
oh->hand = g_new (ClutterActor*, n_hands);
for (i = 0; i < n_hands; i++)
{
gint x, y, w, h;
gint radius = get_radius ();
/* Create a texture from file, then clone in to same resources */
if (i == 0)
{
if ((oh->hand[i] = clutter_texture_new_from_file ("redhand.png",
&error)) == NULL)
{
g_error ("image load failed: %s", error->message);
exit (1);
}
}
else
oh->hand[i] = clutter_clone_texture_new (CLUTTER_TEXTURE(oh->hand[0]));
/* paint something before each hand */
g_signal_connect (oh->hand[i],
"paint", G_CALLBACK (hand_pre_paint),
oh);
/* paint something after each hand */
g_signal_connect_after (oh->hand[i],
"paint", G_CALLBACK (hand_post_paint),
oh);
/* Place around a circle */
w = clutter_actor_get_width (oh->hand[0]);
h = clutter_actor_get_height (oh->hand[0]);
x = CLUTTER_STAGE_WIDTH () / 2
+ radius
* cos (i * M_PI / (n_hands / 2))
- w / 2;
y = CLUTTER_STAGE_HEIGHT () / 2
+ radius
* sin (i * M_PI / (n_hands / 2))
- h / 2;
clutter_actor_set_position (oh->hand[i], x, y);
clutter_actor_move_anchor_point_from_gravity (oh->hand[i],
CLUTTER_GRAVITY_CENTER);
/* Add to our group group */
clutter_container_add_actor (CLUTTER_CONTAINER (oh->group), oh->hand[i]);
#if 1 /* FIXME: disabled as causes drift? - see comment above */
if (i % 2)
clutter_behaviour_apply (scaler_1, oh->hand[i]);
else
clutter_behaviour_apply (scaler_2, oh->hand[i]);
#endif
}
oh->paint_guards = g_malloc0 (sizeof (gboolean) * n_hands);
/* Add the group to the stage */
clutter_container_add_actor (CLUTTER_CONTAINER (stage),
CLUTTER_ACTOR (oh->group));
/* Show everying ( and map window ) */
clutter_actor_show (stage);
g_signal_connect (stage, "button-press-event",
G_CALLBACK (input_cb),
oh);
g_signal_connect (stage, "key-release-event",
G_CALLBACK (input_cb),
oh);
/* and start it */
clutter_timeline_start (timeline);
clutter_main ();
g_free (oh->hand);
g_free (oh->paint_guards);
g_free (oh);
return 0;
}