Mercurial > MadButterfly
annotate examples/drag/main.c @ 1396:a5672125e515
Copy the transformation matrix when we clone it. It looks like the MB do not copy the matrix automatically.
Support isuse attribute to decide how to generate the tweened matrix.
| author | wycc |
|---|---|
| date | Sat, 02 Apr 2011 05:39:26 +0800 |
| parents | 7f49b501ac4d |
| children |
| 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 { | |
|
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13 mb_rt_t *rt; |
| 199 | 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 | |
|
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24 mb_rt_t *rt; |
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25 rt = mb_runtime_new(":0.0", 800, 600); |
| 199 | 26 engine_t *en = (engine_t *) malloc(sizeof(engine_t)); |
| 27 | |
| 28 en->rt = rt; | |
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29 en->rdman = mb_runtime_rdman(rt); |
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1eb9ee5ae4f2
Star in drag would be moved out the window border when cursor hit it.
Thinker K.F. Li <thinker@branda.to>
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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 */ | |
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parents:
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39 mb_runtime_event_loop(en->rt); |
| 199 | 40 |
| 41 /* | |
| 42 * Clean | |
| 43 */ | |
| 44 menu_free(en->menu); | |
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45 mb_runtime_free(en->rt); |
| 199 | 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 */ |