Mercurial > MadButterfly
annotate examples/drag/main.c @ 880:ac3e8492ad74 abs_n_rel_center
Formalize path data for MadButterfly.
Inkscape and other editors would omit 'l' or 'L' after 'm' or 'M'.
MadButterfly can not handle it, now. So, we work around it at SVG
parser.
| author | Thinker K.F. Li <thinker@codemud.net> |
|---|---|
| date | Sat, 25 Sep 2010 18:46:37 +0800 |
| parents | 29e1b2bffe4c |
| children | 7f49b501ac4d |
| rev | line source |
|---|---|
| 199 | 1 /*! \file |
| 2 * | |
| 3 * svg2code_ex is an example that show programmers how to create a | |
| 4 * menu with MadButterfly. | |
| 5 * | |
| 6 */ | |
| 7 #include <stdio.h> | |
| 8 #include <mb.h> | |
| 9 #include "menu.h" | |
| 10 | |
| 11 typedef struct _engine engine_t; | |
| 12 struct _engine { | |
| 13 X_MB_runtime_t *rt; | |
| 14 redraw_man_t *rdman; | |
| 15 menu_t *menu; | |
| 16 int state; | |
| 17 co_aix orx,ory; | |
| 18 int start_x,start_y; | |
| 214 | 19 coord_t *cursor; |
| 199 | 20 }; |
| 21 engine_t *engine_init() | |
| 22 { | |
| 23 | |
| 24 X_MB_runtime_t *rt; | |
| 25 rt = X_MB_new(":0.0", 800, 600); | |
| 26 engine_t *en = (engine_t *) malloc(sizeof(engine_t)); | |
| 27 | |
| 28 en->rt = rt; | |
| 29 en->rdman = X_MB_rdman(rt); | |
|
219
1eb9ee5ae4f2
Star in drag would be moved out the window border when cursor hit it.
Thinker K.F. Li <thinker@branda.to>
parents:
214
diff
changeset
|
30 en->state = 0; |
| 199 | 31 return en; |
| 32 } | |
| 33 void engine_close(engine_t *en) | |
| 34 { | |
| 35 /* | |
| 36 * Start handle connections, includes one to X server. | |
| 37 * User start to interact with the application. | |
| 38 */ | |
| 39 X_MB_handle_connection(en->rt); | |
| 40 | |
| 41 /* | |
| 42 * Clean | |
| 43 */ | |
| 44 menu_free(en->menu); | |
| 45 X_MB_free(en->rt); | |
| 46 free(en); | |
| 47 } | |
| 48 #define COORD_SHOW(group) coord_show(group);rdman_coord_changed(X_MB_rdman(ex_rt->rt), group) | |
| 49 #define COORD_HIDE(group) coord_hide(group);rdman_coord_changed(X_MB_rdman(ex_rt->rt), group) | |
| 50 | |
| 51 | |
| 52 static void cursor_press_handler(event_t *evt, void *arg) { | |
| 53 engine_t *en = (engine_t *) arg; | |
| 54 mouse_event_t *mev = (mouse_event_t *) evt; | |
| 55 | |
| 56 en->start_x = mev->x; | |
| 57 en->start_y = mev->y; | |
| 214 | 58 en->orx = en->cursor->matrix[2]; |
| 59 en->ory = en->cursor->matrix[5]; | |
| 199 | 60 printf("pressed %g %g\n",en->orx,en->ory); |
| 61 en->state = 1; | |
| 62 } | |
| 63 | |
| 64 static void cursor_release_handler(event_t *evt, void *arg) { | |
| 65 engine_t *en = (engine_t *) arg; | |
| 66 printf("up\n"); | |
| 67 en->state = 0; | |
| 68 } | |
| 69 | |
| 70 static void cursor_move_handler(event_t *evt, void *arg) { | |
| 71 engine_t *en = (engine_t *) arg; | |
| 72 mouse_event_t *mev = (mouse_event_t *) evt; | |
| 73 | |
| 74 if (en->state) { | |
| 75 printf("move to (%d %d)\n", mev->x,mev->y); | |
| 214 | 76 coord_move(en->cursor,en->orx + (mev->x-en->start_x),en->ory + (mev->y-en->start_y)); |
| 77 rdman_coord_changed(en->rdman, en->cursor); | |
| 199 | 78 /* Update changed part to UI. */ |
| 79 rdman_redraw_changed(en->rdman); | |
| 80 } | |
| 81 } | |
| 82 | |
| 83 int main(int argc, char * const argv[]) { | |
| 84 subject_t *subject; | |
| 85 engine_t *en; | |
| 86 | |
| 87 en = engine_init(); | |
| 88 en->menu = menu_new(en->rdman, en->rdman->root_coord); | |
| 214 | 89 en->cursor = (coord_t *) MB_SPRITE_GET_OBJ(&en->menu->lsym.sprite, "star"); |
| 90 printf("en->cursor=%x star=%x\n",en->cursor,en->menu->star); | |
| 91 printf("sprite=%x\n",&en->menu->lsym.sprite); | |
| 92 printf("en->menu=%x\n",en->menu); | |
| 199 | 93 |
| 94 /* | |
| 95 * Register observers to subjects of events for objects. | |
| 96 */ | |
| 214 | 97 subject = coord_get_mouse_event(en->cursor); |
| 199 | 98 subject_add_event_observer(subject, EVT_MOUSE_BUT_PRESS, cursor_press_handler, en); |
| 99 subject_add_event_observer(subject, EVT_MOUSE_BUT_RELEASE, cursor_release_handler, en); | |
| 100 subject_add_event_observer(subject, EVT_MOUSE_MOVE, cursor_move_handler, en); | |
| 101 | |
| 102 | |
| 103 engine_close(en); | |
| 104 | |
| 105 return 0; | |
| 106 } | |
| 107 | |
| 108 /* vim: set ts=4 */ |