always adjust the frames size and position together, so there is no more weird resizi...
[dana/openbox.git] / openbox / engine.c
1 #include "engine.h"
2
3 #include <glib.h>
4 #include <gmodule.h>
5 #ifdef HAVE_STDLIB_H
6 #  include <stdlib.h>
7 #endif
8
9 static GModule *module;
10 static EngineStartup *estartup;
11 static EngineShutdown *eshutdown;
12
13 #define LOADSYM(name, var) \
14     if (!g_module_symbol(module, #name, (gpointer*)&var)) { \
15         g_warning("Failed to load symbol %s from engine", #name); \
16         return FALSE; \
17     }
18
19 static gboolean load(char *name)
20 {
21     char *path;
22
23     g_assert(module == NULL);
24
25     path = g_build_filename(ENGINEDIR, name, NULL);
26     module = g_module_open(path, 0);
27     g_free(path);
28
29     if (module == NULL) {
30         path = g_build_filename(g_get_home_dir(), ".openbox", "engines", name,
31                                 NULL);
32         module = g_module_open(path, 0);
33         g_free(path);
34     }
35
36     if (module == NULL)
37         return FALSE;
38
39     /* load the engine's symbols */
40     LOADSYM(startup, estartup);
41     LOADSYM(shutdown, eshutdown);
42     LOADSYM(frame_new, engine_frame_new);
43     LOADSYM(frame_grab_client, engine_frame_grab_client);
44     LOADSYM(frame_release_client, engine_frame_release_client);
45     LOADSYM(frame_adjust_area, engine_frame_adjust_area);
46     LOADSYM(frame_adjust_shape, engine_frame_adjust_shape);
47     LOADSYM(frame_adjust_state, engine_frame_adjust_state);
48     LOADSYM(frame_adjust_focus, engine_frame_adjust_focus);
49     LOADSYM(frame_adjust_title, engine_frame_adjust_title);
50     LOADSYM(frame_adjust_icon, engine_frame_adjust_icon);
51     LOADSYM(frame_show, engine_frame_show);
52     LOADSYM(frame_hide, engine_frame_hide);
53     LOADSYM(get_context, engine_get_context);
54
55     if (!estartup())
56         return FALSE;
57
58     return TRUE;
59 }
60
61 void engine_startup(char *engine)
62 {
63     module = NULL;
64
65     if (engine != NULL) {
66         if (load(engine))
67             return;
68         g_warning("Failed to load the engine '%s'", engine);
69         g_message("Falling back to the default: '%s'", DEFAULT_ENGINE);
70     }
71     if (!load(DEFAULT_ENGINE)) {
72         g_critical("Failed to load the engine '%s'. Aborting", DEFAULT_ENGINE);
73         exit(1);
74     }
75 }
76
77 void engine_shutdown()
78 {
79     if (module != NULL) {
80         eshutdown();
81         g_module_close(module);
82     }
83 }