Mercurial > MadButterfly
view examples/dynamic/mbbutton.c @ 511:caa087976b17 Android_Skia
Fix the issue of segmentation fault when the pattern of a mbe is not setted.
For Skia graphic engine, a mbe does not always have a pattern. For
example, a color paint does not set a pattern on a mbe for a shape.
So, we check if pattern is setted before accessing it.
author | Thinker K.F. Li <thinker@branda.to> |
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date | Tue, 01 Dec 2009 22:55:27 +0800 |
parents | 26c302b47de1 |
children |
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#include <stdio.h> #include <mb.h> #include <string.h> #include "mb_af.h" #define CMOUSE(e) (coord_get_mouse_event(e)) static void mb_button_pressed(event_t *evt, void *arg); static void mb_button_out(event_t *evt, void *arg); void mb_button_add_onClick(mb_button_t *b, void (*h)(void *arg), void *arg) { b->press = h; b->arg = arg; } void mb_button_refresh(mb_button_t *btn) { rdman_coord_changed(btn->rdman,btn->root); rdman_redraw_changed(btn->rdman); } static void mb_button_move(event_t *evt, void *arg) { mb_button_t *btn = (mb_button_t *) arg; printf("Mouse move\n"); coord_show(btn->active); mb_button_refresh(btn); } static void mb_button_out(event_t *evt, void *arg) { mb_button_t *btn = (mb_button_t *) arg; if (btn->progm) { mb_progm_abort(btn->progm); btn->progm = NULL; } printf("mouse out\n"); coord_hide(btn->click); coord_hide(btn->active); coord_show(btn->normal); mb_button_refresh(btn); } static void mb_button_show_active(event_t *evt, void *arg) { mb_button_t *btn = (mb_button_t *) arg; coord_show(btn->active); mb_button_refresh(btn); } static void mb_button_pressed(event_t *evt, void *arg) { mb_button_t *btn = (mb_button_t *) arg; mb_timeval_t start, playing, now; mb_progm_t *progm; mb_word_t *word; printf("Pressed\n"); if (btn->progm) { mb_progm_abort(btn->progm); btn->progm = NULL; } coord_show(btn->click); coord_hide(btn->active); rdman_coord_changed(btn->rdman,btn->root); rdman_redraw_changed(btn->rdman); btn->progm = progm = mb_progm_new(1, btn->rdman); MB_TIMEVAL_SET(&start, 0, 500000); MB_TIMEVAL_SET(&playing, 0, 0); word = mb_progm_next_word(progm, &start, &playing); mb_visibility_new(VIS_HIDDEN, btn->click, word); mb_visibility_new(VIS_VISIBLE, btn->active, word); mb_progm_free_completed(progm); get_now(&now); printf("rt = %x\n", btn->rdman->rt); mb_progm_start(progm, X_MB_tman(btn->rdman->rt), &now); if (btn->press) btn->press(btn->arg); } mb_button_t *mb_button_new(redraw_man_t *rdman,mb_sprite_t *sp, char *name) { mb_button_t *btn = (mb_button_t *) malloc(sizeof(mb_button_t)); char *buf = (char *) malloc(strlen(name)+5); btn->root = (coord_t *) MB_SPRITE_GET_OBJ(sp, name); sprintf(buf, "%s_normal", name); btn->normal = (coord_t *) MB_SPRITE_GET_OBJ(sp, buf); if (btn->normal == NULL) { printf("Missing normal button, this is not a correct button\n"); } sprintf(buf, "%s_active", name); btn->active = (coord_t *) MB_SPRITE_GET_OBJ(sp, buf); if (btn->active == NULL) { printf("Missing click button, this is not a correct button\n"); } sprintf(buf, "%s_click", name); btn->click = (coord_t *) MB_SPRITE_GET_OBJ(sp, buf); if (btn->active == NULL) { printf("Missing click button, this is not a correct button\n"); } btn->press = NULL; // Show only the normal button coord_hide(btn->active); coord_hide(btn->click); coord_show(btn->normal); // Move to the same position btn->active->matrix[2] = 200; btn->active->matrix[5] = 200; btn->normal->matrix[2] = 200; btn->normal->matrix[5] = 200; btn->click->matrix[2] = 200; btn->click->matrix[5] = 200; btn->rdman = rdman; btn->obs_move = subject_add_event_observer(CMOUSE(btn->root), EVT_MOUSE_MOVE, mb_button_move,btn); btn->obs_press = subject_add_event_observer(CMOUSE(btn->root), EVT_MOUSE_BUT_PRESS, mb_button_pressed,btn); btn->obs_out = subject_add_event_observer(CMOUSE(btn->root), EVT_MOUSE_OUT, mb_button_out,btn); btn->progm = NULL; rdman_redraw_changed(rdman); return btn; }