Mercurial > MadButterfly
annotate examples/drag/main.c @ 1160:1a699dc00fa3
Fix the issue of not removing node in old scene when switching scenes.
- When a timeline is playing and crossing two scenes (tween block),
nodes, for the old scene, in duplicate group must be removed. But,
it is not.
- It is fixed by checking if nodes, in the duplicate group, are also
in the key frame next to the new scene. All nodes that is not in
next key frame are remove.
| author | Thinker K.F. Li <thinker@codemud.net> |
|---|---|
| date | Tue, 28 Dec 2010 13:35:34 +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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parents:
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changeset
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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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Star in drag would be moved out the window border when cursor hit it.
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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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changeset
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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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parents:
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changeset
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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 */ |