1 #include <stdlib.h>
2 #include <gdk-pixbuf/gdk-pixbuf.h>
3 #include <clutter/clutter.h>
4
5 static const struct {
6 ClutterContentGravity gravity;
7 const char *name;
8 } gravities[] = {
9 { CLUTTER_CONTENT_GRAVITY_TOP_LEFT, "Top Left" },
10 { CLUTTER_CONTENT_GRAVITY_TOP, "Top" },
11 { CLUTTER_CONTENT_GRAVITY_TOP_RIGHT, "Top Right" },
12
13 { CLUTTER_CONTENT_GRAVITY_LEFT, "Left" },
14 { CLUTTER_CONTENT_GRAVITY_CENTER, "Center" },
15 { CLUTTER_CONTENT_GRAVITY_RIGHT, "Right" },
16
17 { CLUTTER_CONTENT_GRAVITY_BOTTOM_LEFT, "Bottom Left" },
18 { CLUTTER_CONTENT_GRAVITY_BOTTOM, "Bottom" },
19 { CLUTTER_CONTENT_GRAVITY_BOTTOM_RIGHT, "Bottom Right" },
20
21 { CLUTTER_CONTENT_GRAVITY_RESIZE_FILL, "Resize Fill" },
22 { CLUTTER_CONTENT_GRAVITY_RESIZE_ASPECT, "Resize Aspect" },
23 };
24
25 static int n_gravities = G_N_ELEMENTS (gravities);
26 static int cur_gravity = 0;
27
28 static void
on_tap(ClutterTapAction * action,ClutterActor * actor,ClutterText * label)29 on_tap (ClutterTapAction *action,
30 ClutterActor *actor,
31 ClutterText *label)
32 {
33 gchar *str;
34
35 clutter_actor_save_easing_state (actor);
36 clutter_actor_set_content_gravity (actor, gravities[cur_gravity].gravity);
37 clutter_actor_restore_easing_state (actor);
38
39 str = g_strconcat ("Content gravity: ", gravities[cur_gravity].name, NULL);
40 clutter_text_set_text (label, str);
41 g_free (str);
42
43 cur_gravity += 1;
44
45 if (cur_gravity >= n_gravities)
46 cur_gravity = 0;
47 }
48
49 int
main(int argc,char * argv[])50 main (int argc, char *argv[])
51 {
52 ClutterActor *stage, *text;
53 ClutterContent *image;
54 ClutterAction *action;
55 GdkPixbuf *pixbuf;
56 gchar *str;
57
58 if (clutter_init (&argc, &argv) != CLUTTER_INIT_SUCCESS)
59 return EXIT_FAILURE;
60
61 stage = clutter_stage_new ();
62 clutter_actor_set_name (stage, "Stage");
63 clutter_stage_set_title (CLUTTER_STAGE (stage), "Content Box");
64 clutter_stage_set_user_resizable (CLUTTER_STAGE (stage), TRUE);
65 g_signal_connect (stage, "destroy", G_CALLBACK (clutter_main_quit), NULL);
66 clutter_actor_set_margin_top (stage, 12);
67 clutter_actor_set_margin_right (stage, 12);
68 clutter_actor_set_margin_bottom (stage, 12);
69 clutter_actor_set_margin_left (stage, 12);
70 clutter_actor_show (stage);
71
72 pixbuf = gdk_pixbuf_new_from_file ("redhand.png", NULL);
73 image = clutter_image_new ();
74 clutter_image_set_data (CLUTTER_IMAGE (image),
75 gdk_pixbuf_get_pixels (pixbuf),
76 gdk_pixbuf_get_has_alpha (pixbuf)
77 ? COGL_PIXEL_FORMAT_RGBA_8888
78 : COGL_PIXEL_FORMAT_RGB_888,
79 gdk_pixbuf_get_width (pixbuf),
80 gdk_pixbuf_get_height (pixbuf),
81 gdk_pixbuf_get_rowstride (pixbuf),
82 NULL);
83 g_object_unref (pixbuf);
84
85 clutter_actor_set_content_scaling_filters (stage,
86 CLUTTER_SCALING_FILTER_TRILINEAR,
87 CLUTTER_SCALING_FILTER_LINEAR);
88 clutter_actor_set_content_gravity (stage, gravities[n_gravities - 1].gravity);
89 clutter_actor_set_content (stage, image);
90 g_object_unref (image);
91
92 str = g_strconcat ("Content gravity: ",
93 gravities[n_gravities - 1].name,
94 NULL);
95
96 text = clutter_text_new ();
97 clutter_text_set_text (CLUTTER_TEXT (text), str);
98 clutter_actor_add_constraint (text, clutter_align_constraint_new (stage, CLUTTER_ALIGN_BOTH, 0.5));
99 clutter_actor_add_child (stage, text);
100
101 g_free (str);
102
103 action = clutter_tap_action_new ();
104 g_signal_connect (action, "tap", G_CALLBACK (on_tap), text);
105 clutter_actor_add_action (stage, action);
106
107 clutter_main ();
108
109 return EXIT_SUCCESS;
110 }
111