/** * Signal function of the roller * @param roller pointer to a roller object * @param sign a signal type from lv_signal_t enum * @param param pointer to a signal specific variable * @return LV_RES_OK: the object is not deleted in the function; LV_RES_INV: the object is deleted */ static lv_res_t lv_roller_signal(lv_obj_t * roller, lv_signal_t sign, void * param) { lv_res_t res = LV_RES_OK; /*Don't let the drop down list to handle the control signals. It works differently*/ if(sign != LV_SIGNAL_CONTROLL && sign != LV_SIGNAL_FOCUS && sign != LV_SIGNAL_DEFOCUS) { /* Include the ancient signal function */ res = ancestor_signal(roller, sign, param); if(res != LV_RES_OK) return res; } lv_roller_ext_t * ext = lv_obj_get_ext_attr(roller); if(sign == LV_SIGNAL_STYLE_CHG) { lv_obj_set_height(lv_page_get_scrl(roller), lv_obj_get_height(ext->ddlist.label) + lv_obj_get_height(roller)); lv_obj_align(ext->ddlist.label, NULL, LV_ALIGN_CENTER, 0, 0); lv_ddlist_set_selected(roller, ext->ddlist.sel_opt_id); refr_position(roller, false); } else if(sign == LV_SIGNAL_CORD_CHG) { if(lv_obj_get_width(roller) != lv_area_get_width(param) || lv_obj_get_height(roller) != lv_area_get_height(param)) { lv_ddlist_set_fix_height(roller, lv_obj_get_height(roller)); lv_obj_set_height(lv_page_get_scrl(roller), lv_obj_get_height(ext->ddlist.label) + lv_obj_get_height(roller)); lv_obj_align(ext->ddlist.label, NULL, LV_ALIGN_CENTER, 0, 0); lv_ddlist_set_selected(roller, ext->ddlist.sel_opt_id); refr_position(roller, false); } } else if(sign == LV_SIGNAL_CONTROLL) { char c = *((char*)param); if(c == LV_GROUP_KEY_RIGHT || c == LV_GROUP_KEY_DOWN) { if(ext->ddlist.sel_opt_id +1 < ext->ddlist.option_cnt) { lv_roller_set_selected(roller, ext->ddlist.sel_opt_id + 1, true); if(ext->ddlist.action != NULL) { ext->ddlist.action(roller); } } } else if(c == LV_GROUP_KEY_LEFT || c == LV_GROUP_KEY_UP) { if(ext->ddlist.sel_opt_id > 0) { lv_roller_set_selected(roller, ext->ddlist.sel_opt_id - 1, true); if(ext->ddlist.action != NULL) { ext->ddlist.action(roller); } } } } return res; }
/** * Set the selected option * @param roller pointer to a roller object * @param sel_opt id of the selected option (0 ... number of option - 1); * @param anim_en true: set with animation; false set immediately */ void lv_roller_set_selected(lv_obj_t *roller, uint16_t sel_opt, bool anim_en) { lv_ddlist_set_selected(roller, sel_opt); refr_position(roller, anim_en); }
/********************** * STATIC FUNCTIONS **********************/ static void create_tab1(lv_theme_t * th, lv_obj_t *parent) { lv_page_set_scrl_layout(parent, LV_LAYOUT_PRETTY); static lv_style_t h_style; lv_style_copy(&h_style, &lv_style_transp); h_style.body.padding.inner = LV_DPI / 4; h_style.body.padding.hor = LV_DPI / 4; h_style.body.padding.ver = LV_DPI / 6; lv_obj_t *h = lv_cont_create(parent, NULL); lv_obj_set_style(h, &h_style); lv_obj_set_click(h, false); lv_cont_set_fit(h, true, true); lv_cont_set_layout(h, LV_LAYOUT_COL_M); lv_obj_t *btn = lv_btn_create(h, NULL); lv_btn_set_style(btn, LV_BTN_STYLE_REL, th->btn.rel); lv_btn_set_style(btn, LV_BTN_STYLE_PR, th->btn.pr); lv_btn_set_style(btn, LV_BTN_STYLE_TGL_REL, th->btn.tgl_rel); lv_btn_set_style(btn, LV_BTN_STYLE_TGL_PR, th->btn.tgl_pr); lv_btn_set_style(btn, LV_BTN_STYLE_INA, th->btn.ina); lv_btn_set_fit(btn, true, true); lv_btn_set_toggle(btn, true); lv_obj_t *btn_label = lv_label_create(btn, NULL); lv_label_set_text(btn_label, "Button"); btn = lv_btn_create(h, btn); lv_btn_toggle(btn); btn_label = lv_label_create(btn, NULL); lv_label_set_text(btn_label, "Toggled"); btn = lv_btn_create(h, btn); lv_btn_set_state(btn, LV_BTN_STATE_INA); btn_label = lv_label_create(btn, NULL); lv_label_set_text(btn_label, "Inactive"); lv_obj_t *label = lv_label_create(h, NULL); lv_label_set_text(label, "Primary"); lv_obj_set_style(label, th->label.prim); label = lv_label_create(h, NULL); lv_label_set_text(label, "Secondary"); lv_obj_set_style(label, th->label.sec); label = lv_label_create(h, NULL); lv_label_set_text(label, "Hint"); lv_obj_set_style(label, th->label.hint); static const char *btnm_str[] = {"1", "2", "3", SYMBOL_OK, SYMBOL_CLOSE, ""}; lv_obj_t *btnm = lv_btnm_create(h, NULL); lv_obj_set_size(btnm,LV_HOR_RES / 4, 2 * LV_DPI / 3); lv_btnm_set_map(btnm, btnm_str); lv_btnm_set_toggle(btnm, true, 3); h = lv_cont_create(parent, h); lv_obj_t *sw_h = lv_cont_create(h, NULL); lv_cont_set_style(sw_h, &lv_style_transp); lv_cont_set_fit(sw_h, false, true); lv_obj_set_width(sw_h, LV_HOR_RES / 4); lv_cont_set_layout(sw_h, LV_LAYOUT_PRETTY); lv_obj_t *sw = lv_sw_create(sw_h, NULL); sw = lv_sw_create(sw_h, sw); lv_sw_on(sw); lv_obj_t *bar = lv_bar_create(h, NULL); lv_bar_set_value(bar, 70); lv_obj_t *slider = lv_slider_create(h, NULL); lv_bar_set_value(slider, 70); lv_obj_t *line = lv_line_create(h, NULL); static const lv_point_t line_p[] = {{0,0},{LV_HOR_RES / 5, 0}}; lv_line_set_points(line, line_p, 2); lv_line_set_style(line, th->line.decor); lv_obj_t *ta = lv_ta_create(h, NULL); lv_obj_set_style(ta, th->ta.oneline); lv_ta_set_text(ta, "Some text"); lv_ta_set_one_line(ta, true); lv_obj_t *cb = lv_cb_create(h, NULL); cb = lv_cb_create(h, cb); lv_btn_set_state(cb, LV_BTN_STATE_TGL_REL); lv_obj_t *ddlist = lv_ddlist_create(h, NULL); lv_ddlist_open(ddlist, false); lv_ddlist_set_selected(ddlist, 1); h = lv_cont_create(parent, h); lv_obj_t * list = lv_list_create(h, NULL); lv_obj_t *list_btn; list_btn = lv_list_add(list, SYMBOL_GPS, "GPS", NULL); lv_obj_set_size(list, LV_HOR_RES / 4, LV_VER_RES / 2); lv_btn_set_toggle(list_btn, true); lv_list_add(list, SYMBOL_WIFI, "WiFi", NULL); lv_list_add(list, SYMBOL_GPS, "GPS", NULL); lv_list_add(list, SYMBOL_AUDIO, "Audio", NULL); lv_list_add(list, SYMBOL_VIDEO, "Video", NULL); lv_list_add(list, SYMBOL_CALL, "Call", NULL); lv_list_add(list, SYMBOL_BELL, "Bell", NULL); lv_list_add(list, SYMBOL_FILE, "File", NULL); lv_list_add(list, SYMBOL_EDIT, "Edit", NULL); lv_list_add(list, SYMBOL_CUT, "Cut", NULL); lv_list_add(list, SYMBOL_COPY, "Copy", NULL); lv_obj_t *roller = lv_roller_create(h, NULL); lv_roller_set_options(roller, "Monday\nTuesday\nWednesday\nThursday\nFriday\nSaturday\nSunday"); lv_roller_set_selected(roller, 1, false); lv_roller_set_visible_row_count(roller, 3); }