1 /*
2 * Copyright 2009 Intel Corporation.
3 *
4 * This program is free software; you can redistribute it and/or modify it
5 * under the terms and conditions of the GNU Lesser General Public License,
6 * version 2.1, as published by the Free Software Foundation.
7 *
8 * This program is distributed in the hope it will be useful, but WITHOUT ANY
9 * WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
10 * FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for
11 * more details.
12 *
13 * You should have received a copy of the GNU Lesser General Public License
14 * along with this program; if not, write to the Free Software Foundation,
15 * Inc., 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
16 * Boston, MA 02111-1307, USA.
17 *
18 */
19 #include <stdlib.h>
20 #include <clutter/clutter.h>
21
22 #define INSTRUCTIONS \
23 "Press v\t\342\236\236\tSwitch horizontal/vertical\n" \
24 "Press h\t\342\236\236\tToggle homogeneous\n" \
25 "Press p\t\342\236\236\tToggle pack start/end\n" \
26 "Press s\t\342\236\236\tIncrement spacing (up to 12px)\n" \
27 "Press +\t\342\236\236\tAdd a new actor\n" \
28 "Press a\t\342\236\236\tToggle animations\n" \
29 "Press q\t\342\236\236\tQuit"
30
31
32 static const gchar *
get_align_name(ClutterActorAlign align)33 get_align_name (ClutterActorAlign align)
34 {
35 switch (align)
36 {
37 case CLUTTER_ACTOR_ALIGN_FILL:
38 return "fill";
39
40 case CLUTTER_ACTOR_ALIGN_START:
41 return "start";
42
43 case CLUTTER_ACTOR_ALIGN_CENTER:
44 return "center";
45
46 case CLUTTER_ACTOR_ALIGN_END:
47 return "end";
48
49 default:
50 g_assert_not_reached ();
51 }
52 }
53
54 static gboolean
button_release_cb(ClutterActor * rect,ClutterEvent * event,gpointer user_data)55 button_release_cb (ClutterActor *rect,
56 ClutterEvent *event,
57 gpointer user_data)
58 {
59 ClutterActorAlign x_align, y_align;
60 gboolean x_expand, y_expand;
61
62 g_object_get (rect,
63 "x-align", &x_align,
64 "y-align", &y_align,
65 "x-expand", &x_expand,
66 "y-expand", &y_expand,
67 NULL);
68
69 switch (clutter_event_get_button (event))
70 {
71 case CLUTTER_BUTTON_PRIMARY:
72 if (clutter_event_has_shift_modifier (event))
73 {
74 if (y_align < 3)
75 y_align += 1;
76 else
77 y_align = 0;
78 break;
79 }
80 else
81 {
82 if (x_align < 3)
83 x_align += 1;
84 else
85 x_align = 0;
86 }
87 break;
88
89 case CLUTTER_BUTTON_SECONDARY:
90 if (clutter_event_has_shift_modifier (event))
91 y_expand = !y_expand;
92 else
93 x_expand = !x_expand;
94 break;
95
96 default:
97 break;
98 }
99
100 g_object_set (rect,
101 "x-align", x_align,
102 "y-align", y_align,
103 "x-expand", x_expand,
104 "y-expand", y_expand,
105 NULL);
106 return TRUE;
107 }
108
109 static void
changed_cb(ClutterActor * actor,GParamSpec * pspec,ClutterActor * text)110 changed_cb (ClutterActor *actor,
111 GParamSpec *pspec,
112 ClutterActor *text)
113 {
114 ClutterActorAlign x_align, y_align;
115 gboolean x_expand, y_expand;
116 gchar *label;
117
118 g_object_get (actor,
119 "x-align", &x_align,
120 "y-align", &y_align,
121 "x-expand", &x_expand,
122 "y-expand", &y_expand,
123 NULL);
124
125 label = g_strdup_printf ("%d,%d\n"
126 "%s\n%s",
127 x_expand, y_expand,
128 get_align_name (x_align),
129 get_align_name (y_align));
130 clutter_text_set_text (CLUTTER_TEXT (text), label);
131 free (label);
132 }
133
134 static void
add_actor(ClutterActor * box,gint position)135 add_actor (ClutterActor *box,
136 gint position)
137 {
138 ClutterActor *rect, *text;
139 ClutterColor color;
140 ClutterLayoutManager *layout;
141
142 clutter_color_from_hls (&color,
143 g_random_double_range (0.0, 360.0),
144 0.5,
145 0.5);
146 color.alpha = 255;
147
148 layout = clutter_bin_layout_new (CLUTTER_BIN_ALIGNMENT_CENTER,
149 CLUTTER_BIN_ALIGNMENT_CENTER);
150 rect = clutter_actor_new ();
151 clutter_actor_set_layout_manager (rect, layout);
152 clutter_actor_set_background_color (rect, &color);
153 clutter_actor_set_reactive (rect, TRUE);
154 clutter_actor_set_size (rect, 32, 64);
155 clutter_actor_set_x_expand (rect, TRUE);
156 clutter_actor_set_y_expand (rect, TRUE);
157 clutter_actor_set_x_align (rect, CLUTTER_ACTOR_ALIGN_CENTER);
158 clutter_actor_set_y_align (rect, CLUTTER_ACTOR_ALIGN_CENTER);
159
160 text = clutter_text_new_with_text ("Sans 8px", NULL);
161 clutter_text_set_line_alignment (CLUTTER_TEXT (text),
162 PANGO_ALIGN_CENTER);
163 clutter_actor_add_child (rect, text);
164
165 g_signal_connect (rect, "button-release-event",
166 G_CALLBACK (button_release_cb), NULL);
167 g_signal_connect (rect, "notify::x-expand",
168 G_CALLBACK (changed_cb), text);
169 g_signal_connect (rect, "notify::y-expand",
170 G_CALLBACK (changed_cb), text);
171 g_signal_connect (rect, "notify::x-align",
172 G_CALLBACK (changed_cb), text);
173 g_signal_connect (rect, "notify::y-align",
174 G_CALLBACK (changed_cb), text);
175 changed_cb (rect, NULL, text);
176
177 clutter_actor_insert_child_at_index (box, rect, position);
178 }
179
180 static gboolean
key_release_cb(ClutterActor * stage,ClutterEvent * event,ClutterActor * box)181 key_release_cb (ClutterActor *stage,
182 ClutterEvent *event,
183 ClutterActor *box)
184 {
185 ClutterBoxLayout *layout;
186 gboolean toggle;
187 guint spacing;
188
189 layout = CLUTTER_BOX_LAYOUT (clutter_actor_get_layout_manager (box));
190
191 switch (clutter_event_get_key_symbol (event))
192 {
193 case CLUTTER_KEY_a:
194 {
195 ClutterActorIter iter;
196 ClutterActor *child;
197
198 clutter_actor_iter_init (&iter, box);
199 while (clutter_actor_iter_next (&iter, &child))
200 {
201 guint duration;
202
203 duration = clutter_actor_get_easing_duration (child);
204 if (duration != 0)
205 duration = 0;
206 else
207 duration = 250;
208
209 clutter_actor_set_easing_duration (child, duration);
210 }
211 }
212 break;
213
214 case CLUTTER_KEY_v:
215 {
216 ClutterOrientation orientation;
217
218 orientation = clutter_box_layout_get_orientation (layout);
219
220 if (orientation == CLUTTER_ORIENTATION_HORIZONTAL)
221 orientation = CLUTTER_ORIENTATION_VERTICAL;
222 else
223 orientation = CLUTTER_ORIENTATION_HORIZONTAL;
224
225 clutter_box_layout_set_orientation (layout, orientation);
226 }
227 break;
228
229 case CLUTTER_KEY_h:
230 toggle = clutter_box_layout_get_homogeneous (layout);
231 clutter_box_layout_set_homogeneous (layout, !toggle);
232 break;
233
234 case CLUTTER_KEY_p:
235 toggle = clutter_box_layout_get_pack_start (layout);
236 clutter_box_layout_set_pack_start (layout, !toggle);
237 break;
238
239 case CLUTTER_KEY_s:
240 spacing = clutter_box_layout_get_spacing (layout);
241
242 if (spacing > 12)
243 spacing = 0;
244 else
245 spacing++;
246
247 clutter_box_layout_set_spacing (layout, spacing);
248 break;
249
250 case CLUTTER_KEY_plus:
251 add_actor (box, g_random_int_range (0, clutter_actor_get_n_children (box)));
252 break;
253
254 case CLUTTER_KEY_q:
255 clutter_main_quit ();
256 break;
257
258 default:
259 return FALSE;
260 }
261
262 return TRUE;
263 }
264
265 int
main(int argc,char * argv[])266 main (int argc, char *argv[])
267 {
268 ClutterActor *stage, *box, *instructions;
269 ClutterLayoutManager *layout;
270 gint i;
271
272 if (clutter_init (&argc, &argv) != CLUTTER_INIT_SUCCESS)
273 return EXIT_FAILURE;
274
275 stage = clutter_stage_new ();
276 clutter_stage_set_title (CLUTTER_STAGE (stage), "Box Layout");
277 clutter_stage_set_user_resizable (CLUTTER_STAGE (stage), TRUE);
278
279 /* make the stage a vbox */
280 layout = clutter_box_layout_new ();
281 clutter_box_layout_set_orientation (CLUTTER_BOX_LAYOUT (layout),
282 CLUTTER_ORIENTATION_VERTICAL);
283 clutter_actor_set_layout_manager (stage, layout);
284
285 box = clutter_actor_new ();
286 clutter_actor_set_background_color (box, CLUTTER_COLOR_LightGray);
287 clutter_actor_set_x_expand (box, TRUE);
288 clutter_actor_set_y_expand (box, TRUE);
289 layout = clutter_box_layout_new ();
290 clutter_actor_set_layout_manager (box, layout);
291 clutter_actor_add_child (stage, box);
292
293 instructions = clutter_text_new_with_text ("Sans 12px", INSTRUCTIONS);
294 clutter_actor_set_x_expand (instructions, TRUE);
295 clutter_actor_set_y_expand (instructions, FALSE);
296 clutter_actor_set_x_align (instructions, CLUTTER_ACTOR_ALIGN_START);
297 clutter_actor_set_margin_top (instructions, 4);
298 clutter_actor_set_margin_left (instructions, 4);
299 clutter_actor_set_margin_bottom (instructions, 4);
300 clutter_actor_add_child (stage, instructions);
301
302 for (i = 0; i < 5; i++)
303 add_actor (box, i);
304
305 g_signal_connect (stage, "destroy",
306 G_CALLBACK (clutter_main_quit), NULL);
307 g_signal_connect (stage, "key-release-event",
308 G_CALLBACK (key_release_cb), box);
309
310 clutter_actor_show (stage);
311 clutter_main ();
312
313 return EXIT_SUCCESS;
314 }
315