Mercurial > MadButterfly
view examples/drag/main.c @ 1307:cfbc0f3e54e3
Add supporting for programmer defined prefix for data_monitor
author | Thinker K.F. Li <thinker@codemud.net> |
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date | Thu, 20 Jan 2011 00:34:08 +0800 |
parents | 7f49b501ac4d |
children |
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/*! \file * * svg2code_ex is an example that show programmers how to create a * menu with MadButterfly. * */ #include <stdio.h> #include <mb.h> #include "menu.h" typedef struct _engine engine_t; struct _engine { mb_rt_t *rt; redraw_man_t *rdman; menu_t *menu; int state; co_aix orx,ory; int start_x,start_y; coord_t *cursor; }; engine_t *engine_init() { mb_rt_t *rt; rt = mb_runtime_new(":0.0", 800, 600); engine_t *en = (engine_t *) malloc(sizeof(engine_t)); en->rt = rt; en->rdman = mb_runtime_rdman(rt); en->state = 0; return en; } void engine_close(engine_t *en) { /* * Start handle connections, includes one to X server. * User start to interact with the application. */ mb_runtime_event_loop(en->rt); /* * Clean */ menu_free(en->menu); mb_runtime_free(en->rt); free(en); } #define COORD_SHOW(group) coord_show(group);rdman_coord_changed(X_MB_rdman(ex_rt->rt), group) #define COORD_HIDE(group) coord_hide(group);rdman_coord_changed(X_MB_rdman(ex_rt->rt), group) static void cursor_press_handler(event_t *evt, void *arg) { engine_t *en = (engine_t *) arg; mouse_event_t *mev = (mouse_event_t *) evt; en->start_x = mev->x; en->start_y = mev->y; en->orx = en->cursor->matrix[2]; en->ory = en->cursor->matrix[5]; printf("pressed %g %g\n",en->orx,en->ory); en->state = 1; } static void cursor_release_handler(event_t *evt, void *arg) { engine_t *en = (engine_t *) arg; printf("up\n"); en->state = 0; } static void cursor_move_handler(event_t *evt, void *arg) { engine_t *en = (engine_t *) arg; mouse_event_t *mev = (mouse_event_t *) evt; if (en->state) { printf("move to (%d %d)\n", mev->x,mev->y); coord_move(en->cursor,en->orx + (mev->x-en->start_x),en->ory + (mev->y-en->start_y)); rdman_coord_changed(en->rdman, en->cursor); /* Update changed part to UI. */ rdman_redraw_changed(en->rdman); } } int main(int argc, char * const argv[]) { subject_t *subject; engine_t *en; en = engine_init(); en->menu = menu_new(en->rdman, en->rdman->root_coord); en->cursor = (coord_t *) MB_SPRITE_GET_OBJ(&en->menu->lsym.sprite, "star"); printf("en->cursor=%x star=%x\n",en->cursor,en->menu->star); printf("sprite=%x\n",&en->menu->lsym.sprite); printf("en->menu=%x\n",en->menu); /* * Register observers to subjects of events for objects. */ subject = coord_get_mouse_event(en->cursor); subject_add_event_observer(subject, EVT_MOUSE_BUT_PRESS, cursor_press_handler, en); subject_add_event_observer(subject, EVT_MOUSE_BUT_RELEASE, cursor_release_handler, en); subject_add_event_observer(subject, EVT_MOUSE_MOVE, cursor_move_handler, en); engine_close(en); return 0; } /* vim: set ts=4 */