LV_COLUMN结构体

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typedef struct _LV_COLUMN {

UINT mask; //屏蔽位的组合（见下面括号），表明哪些成员是有效的．

int fmt; /*该列的表头和子项的标题显示格式(LVCF_FMT)．可以是LVCFMT_CENTER、LVCFMT_LEFT或LVCFMT_RIGHT*/

int cx; //以像素为单位的列的宽度(LVCF_FMT)

LPTSTR pszText; //指向存放列表头标题正文的缓冲区(LVCF_TEXT)

int cchTextMax; //标题正文缓冲区的长度(LVCF_TEXT)

int iSubItem; //说明该列的索引(LVCF_SUBITEM)

} LV_COLUMN;

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添加功能无法正常工作 添加成功后要显示2秒提示 添加的数据可以在View Students中查看 #include "ui.h" #include "lvgl/lvgl.h" #include "student.h" #include <stdlib.h> #include <stdio.h> #include <string.h> // 编辑学生回调 void edit_student_cb(lv_event_t *e); // 删除学生回调 void delete_student_cb(lv_event_t *e); // 退出系统回调 void exit_system_cb(lv_event_t *e); // 全局UI组件 static lv_obj_t *main_page; static lv_obj_t *add_page; static lv_obj_t *list_page; static lv_obj_t *edit_page; static lv_obj_t *kb; static lv_obj_t *student_list; // 输入框 static lv_obj_t *ta_id; static lv_obj_t *ta_name; static lv_obj_t *ta_score; static lv_obj_t *ta_edit_score; // 当前编辑的学生ID static int current_edit_id = 0; // 关闭键盘 void hide_keyboard() { if (kb) { lv_obj_add_flag(kb, LV_OBJ_FLAG_HIDDEN); // 移除当前文本框的焦点状态 lv_obj_t *ta = lv_keyboard_get_textarea(kb); if (ta) { lv_obj_clear_state(ta, LV_STATE_FOCUSED); } // 解除键盘与文本框的绑定 lv_keyboard_set_textarea(kb, NULL); } } // 键盘事件处理 static void kb_event_cb(lv_event_t *e) { lv_event_code_t code = lv_event_get_code(e); lv_obj_t *kb = lv_event_get_target(e); if (code == LV_EVENT_READY || code == LV_EVENT_CANCEL) { // 隐藏键盘并移除文本框焦点 hide_keyboard(); } } // 定时器回调函数 - 用于延迟隐藏键盘 static void hide_keyboard_timer_cb(lv_timer_t *timer) { hide_keyboard(); lv_timer_del(timer); // 删除定时器 } // 文本框事件处理 static void ta_event_cb(lv_event_t *e) { lv_event_code_t code = lv_event_get_code(e); lv_obj_t *ta = lv_event_get_target(e); if (code == LV_EVENT_CLICKED || code == LV_EVENT_FOCUSED) { if (kb) { // 显示键盘 lv_obj_clear_flag(kb, LV_OBJ_FLAG_HIDDEN); lv_keyboard_set_textarea(kb, ta); lv_obj_move_foreground(kb); // 滚动视图确保文本框可见 lv_obj_scroll_to_view_recursive(ta, LV_ANIM_OFF); } } else if (code == LV_EVENT_DEFOCUSED) { // 文本框失去焦点时隐藏键盘（延迟100ms执行） lv_timer_t* timer = lv_timer_create(hide_keyboard_timer_cb, 100, NULL); } } // 页面点击事件处理 - 用于关闭键盘 static void page_click_cb(lv_event_t *e) { // 点击页面时隐藏键盘 hide_keyboard(); } // 显示主页面 void show_main_page() { lv_screen_load(main_page); } // 显示添加页面 void show_add_page() { // 清空输入框 lv_textarea_set_text(ta_id, ""); lv_textarea_set_text(ta_name, ""); lv_textarea_set_text(ta_score, ""); // 设置下一个可用ID char id_buf[20]; snprintf(id_buf, sizeof(id_buf), "%d", get_next_id()); lv_textarea_set_text(ta_id, id_buf); lv_screen_load(add_page); } // 显示列表页面 void show_list_page() { // 清空现有列表 lv_obj_clean(student_list); // 获取学生数据 Student *students = NULL; int count = get_students(&students); if (count <= 0) { lv_obj_t *label = lv_label_create(student_list); lv_label_set_text(label, "No student records"); lv_obj_align(label, LV_ALIGN_CENTER, 0, 0); return; } // 创建标题行 lv_obj_t *header = lv_obj_create(student_list); lv_obj_set_size(header, LV_PCT(100), 40); lv_obj_set_flex_flow(header, LV_FLEX_FLOW_ROW); lv_obj_t *id_label = lv_label_create(header); lv_label_set_text(id_label, "ID"); lv_obj_set_width(id_label, LV_PCT(15)); lv_obj_t *name_label = lv_label_create(header); lv_label_set_text(name_label, "Name"); lv_obj_set_width(name_label, LV_PCT(35)); lv_obj_t *score_label = lv_label_create(header); lv_label_set_text(score_label, "Score"); lv_obj_set_width(score_label, LV_PCT(20)); lv_obj_t *action_label = lv_label_create(header); lv_label_set_text(action_label, "Actions"); lv_obj_set_width(action_label, LV_PCT(30)); // 添加学生记录 for (int i = 0; i < count; i++) { if (students[i].delete) continue; lv_obj_t *row = lv_obj_create(student_list); lv_obj_set_size(row, LV_PCT(100), 50); lv_obj_set_flex_flow(row, LV_FLEX_FLOW_ROW); // ID char id_buf[10]; snprintf(id_buf, sizeof(id_buf), "%d", students[i].id); lv_obj_t *id = lv_label_create(row); lv_label_set_text(id, id_buf); lv_obj_set_width(id, LV_PCT(15)); // 姓名 lv_obj_t *name = lv_label_create(row); lv_label_set_text(name, students[i].name); lv_obj_set_width(name, LV_PCT(35)); // 成绩 char score_buf[20]; snprintf(score_buf, sizeof(score_buf), "%.1f", students[i].score); lv_obj_t *score = lv_label_create(row); lv_label_set_text(score, score_buf); lv_obj_set_width(score, LV_PCT(20)); // 操作按钮 lv_obj_t *btn_container = lv_obj_create(row); lv_obj_set_size(btn_container, LV_PCT(30), LV_PCT(100)); lv_obj_set_flex_flow(btn_container, LV_FLEX_FLOW_ROW); lv_obj_set_style_pad_all(btn_container, 5, 0); // 编辑按钮 lv_obj_t *edit_btn = lv_btn_create(btn_container); lv_obj_set_size(edit_btn, 80, 35); lv_obj_t *edit_label = lv_label_create(edit_btn); lv_label_set_text(edit_label, "Edit"); // 保存学生ID用于编辑 int *student_id = malloc(sizeof(int)); *student_id = students[i].id; lv_obj_add_event_cb(edit_btn, edit_student_cb, LV_EVENT_CLICKED, student_id); // 删除按钮 lv_obj_t *del_btn = lv_btn_create(btn_container); lv_obj_set_size(del_btn, 80, 35); lv_obj_t *del_label = lv_label_create(del_btn); lv_label_set_text(del_label, "Delete"); // 保存学生ID用于删除 student_id = malloc(sizeof(int)); *student_id = students[i].id; lv_obj_add_event_cb(del_btn, delete_student_cb, LV_EVENT_CLICKED, student_id); } free(students); lv_screen_load(list_page); } // 显示编辑页面 void show_edit_page(int student_id, float current_score) { current_edit_id = student_id; char score_buf[20]; snprintf(score_buf, sizeof(score_buf), "%.1f", current_score); lv_textarea_set_text(ta_edit_score, score_buf); lv_screen_load(edit_page); } // 添加学生回调 void add_student_cb(lv_event_t *e) { const char* id_str = lv_textarea_get_text(ta_id); const char* name = lv_textarea_get_text(ta_name); const char* score_str = lv_textarea_get_text(ta_score); if (!id_str || !name || !score_str || strlen(id_str) == 0 || strlen(name) == 0 || strlen(score_str) == 0) { return; } Student s; s.id = atoi(id_str); strncpy(s.name, name, sizeof(s.name) - 1); s.name[sizeof(s.name) - 1] = '\0'; s.score = atof(score_str); s.delete = 0; int ret = add_student(&s); if (ret == 0) { show_list_page(); } } // 编辑学生回调 void edit_student_cb(lv_event_t *e) { int *student_id = (int *)lv_event_get_user_data(e); if (student_id) { // 获取当前分数 Student *students = NULL; int count = get_students(&students); float current_score = 0.0; for (int i = 0; i < count; i++) { if (students[i].id == *student_id) { current_score = students[i].score; break; } } free(students); show_edit_page(*student_id, current_score); free(student_id); } } // 更新学生回调 void update_student_cb(lv_event_t *e) { const char* score_str = lv_textarea_get_text(ta_edit_score); if (!score_str || strlen(score_str) == 0) { return; } float new_score = atof(score_str); int ret = update_student(current_edit_id, new_score); if (ret == 0) { show_list_page(); } } // 删除学生回调 void delete_student_cb(lv_event_t *e) { int *student_id = (int *)lv_event_get_user_data(e); if (student_id) { int ret = delete_student(*student_id); if (ret == 0) { show_list_page(); } free(student_id); } } // 创建主页面 void create_main_page() { main_page = lv_obj_create(NULL); lv_obj_t *title = lv_label_create(main_page); lv_label_set_text(title, "Student Management System"); lv_obj_align(title, LV_ALIGN_TOP_MID, 0, 30); lv_obj_set_style_text_font(title, &lv_font_montserrat_24, 0); // 创建按钮容器 lv_obj_t *btn_container = lv_obj_create(main_page); lv_obj_set_size(btn_container, 400, 300); lv_obj_align(btn_container, LV_ALIGN_CENTER, 0, 0); lv_obj_set_flex_flow(btn_container, LV_FLEX_FLOW_COLUMN); lv_obj_set_flex_align(btn_container, LV_FLEX_ALIGN_CENTER, LV_FLEX_ALIGN_CENTER, LV_FLEX_ALIGN_CENTER); lv_obj_set_style_pad_all(btn_container, 20, 0); lv_obj_set_style_pad_row(btn_container, 20, 0); // 添加学生按钮 lv_obj_t *add_btn = lv_btn_create(btn_container); lv_obj_set_size(add_btn, 250, 60); lv_obj_t *add_label = lv_label_create(add_btn); lv_label_set_text(add_label, "Add Student"); lv_obj_add_event_cb(add_btn, show_add_page, LV_EVENT_CLICKED, NULL); // 查看学生按钮 lv_obj_t *list_btn = lv_btn_create(btn_container); lv_obj_set_size(list_btn, 250, 60); lv_obj_t *list_label = lv_label_create(list_btn); lv_label_set_text(list_label, "View Students"); lv_obj_add_event_cb(list_btn, show_list_page, LV_EVENT_CLICKED, NULL); // 退出按钮 lv_obj_t *exit_btn = lv_btn_create(btn_container); lv_obj_set_size(exit_btn, 250, 60); lv_obj_t *exit_label = lv_label_create(exit_btn); lv_label_set_text(exit_label, "Exit System"); lv_obj_add_event_cb(exit_btn, exit_system_cb, LV_EVENT_CLICKED, NULL); } // 创建添加页面 - 改进版（居中布局） void create_add_page() { add_page = lv_obj_create(NULL); lv_obj_set_size(add_page, LV_HOR_RES, LV_VER_RES); lv_obj_set_scrollbar_mode(add_page, LV_SCROLLBAR_MODE_OFF); // 添加页面点击事件（用于关闭键盘） lv_obj_add_event_cb(add_page, page_click_cb, LV_EVENT_CLICKED, NULL); lv_obj_t *title = lv_label_create(add_page); lv_label_set_text(title, "Add New Student"); lv_obj_align(title, LV_ALIGN_TOP_MID, 0, 30); lv_obj_set_style_text_font(title, &lv_font_montserrat_20, 0); // 创建表单容器（居中） lv_obj_t *form = lv_obj_create(add_page); lv_obj_remove_flag(form, LV_OBJ_FLAG_SCROLLABLE); lv_obj_set_size(form, 500, 400); lv_obj_center(form); lv_obj_set_style_bg_opa(form, LV_OPA_TRANSP, 0); // 透明背景 lv_obj_set_style_border_width(form, 0, 0); // 移除边框 // ID 标签和文本框 lv_obj_t *id_label = lv_label_create(form); lv_label_set_text(id_label, "ID:"); lv_obj_set_style_text_font(id_label, &lv_font_montserrat_18, 0); lv_obj_align(id_label, LV_ALIGN_TOP_LEFT, 10, 30); ta_id = lv_textarea_create(form); lv_obj_remove_flag(ta_id, LV_OBJ_FLAG_SCROLLABLE); lv_obj_set_size(ta_id, 300, 50); lv_obj_align_to(ta_id, id_label, LV_ALIGN_OUT_RIGHT_MID, 20, 0); lv_textarea_set_one_line(ta_id, true); lv_textarea_set_max_length(ta_id, 10); lv_obj_add_event_cb(ta_id, ta_event_cb, LV_EVENT_ALL, NULL); lv_obj_set_style_bg_color(ta_id, lv_color_hex(0xFFFFFF), 0); lv_obj_set_style_border_width(ta_id, 1, 0); // 姓名标签和文本框 lv_obj_t *name_label = lv_label_create(form); lv_label_set_text(name_label, "Name:"); lv_obj_set_style_text_font(name_label, &lv_font_montserrat_18, 0); lv_obj_align_to(name_label, id_label, LV_ALIGN_OUT_BOTTOM_LEFT, 0, 50); ta_name = lv_textarea_create(form); lv_obj_remove_flag(ta_name, LV_OBJ_FLAG_SCROLLABLE); lv_obj_set_size(ta_name, 300, 50); lv_obj_align_to(ta_name, name_label, LV_ALIGN_OUT_RIGHT_MID, 20, 0); lv_textarea_set_one_line(ta_name, true); lv_textarea_set_max_length(ta_name, 49); lv_obj_add_event_cb(ta_name, ta_event_cb, LV_EVENT_ALL, NULL); lv_obj_set_style_bg_color(ta_name, lv_color_hex(0xFFFFFF), 0); lv_obj_set_style_border_width(ta_name, 1, 0); // 成绩标签和文本框 lv_obj_t *score_label = lv_label_create(form); lv_label_set_text(score_label, "Score:"); lv_obj_set_style_text_font(score_label, &lv_font_montserrat_18, 0); lv_obj_align_to(score_label, name_label, LV_ALIGN_OUT_BOTTOM_LEFT, 0, 50); ta_score = lv_textarea_create(form); lv_obj_remove_flag(ta_score, LV_OBJ_FLAG_SCROLLABLE); lv_obj_set_size(ta_score, 300, 50); lv_obj_align_to(ta_score, score_label, LV_ALIGN_OUT_RIGHT_MID, 20, 0); lv_textarea_set_one_line(ta_score, true); lv_textarea_set_max_length(ta_score, 5); lv_textarea_set_accepted_chars(ta_score, "0123456789."); lv_obj_add_event_cb(ta_score, ta_event_cb, LV_EVENT_ALL, NULL); lv_obj_set_style_bg_color(ta_score, lv_color_hex(0xFFFFFF), 0); lv_obj_set_style_border_width(ta_score, 1, 0); // 按钮容器 lv_obj_t *btn_container = lv_obj_create(form); lv_obj_remove_flag(btn_container, LV_OBJ_FLAG_SCROLLABLE); lv_obj_set_size(btn_container, 400, 60); lv_obj_align(btn_container, LV_ALIGN_BOTTOM_MID, 0, -10); lv_obj_set_flex_flow(btn_container, LV_FLEX_FLOW_ROW); lv_obj_set_flex_align(btn_container, LV_FLEX_ALIGN_SPACE_AROUND, LV_FLEX_ALIGN_CENTER, LV_FLEX_ALIGN_CENTER); lv_obj_set_style_bg_opa(btn_container, LV_OPA_TRANSP, 0); // 添加按钮 lv_obj_t *add_btn = lv_btn_create(btn_container); lv_obj_set_size(add_btn, 180, 50); lv_obj_t *add_label = lv_label_create(add_btn); lv_label_set_text(add_label, "Add"); lv_obj_set_style_text_font(add_label, &lv_font_montserrat_16, 0); lv_obj_center(add_label); lv_obj_add_event_cb(add_btn, add_student_cb, LV_EVENT_CLICKED, NULL); // 返回按钮 lv_obj_t *back_btn = lv_btn_create(btn_container); lv_obj_set_size(back_btn, 180, 50); lv_obj_t *back_label = lv_label_create(back_btn); lv_label_set_text(back_label, "Back"); lv_obj_set_style_text_font(back_label, &lv_font_montserrat_16, 0); lv_obj_center(back_label); lv_obj_add_event_cb(back_btn, show_main_page, LV_EVENT_CLICKED, NULL); } // 创建列表页面 void create_list_page() { list_page = lv_obj_create(NULL); lv_obj_t *title = lv_label_create(list_page); lv_label_set_text(title, "Student List"); lv_obj_align(title, LV_ALIGN_TOP_MID, 0, 20); lv_obj_set_style_text_font(title, &lv_font_montserrat_20, 0); // 创建滚动容器 lv_obj_t *scroll = lv_obj_create(list_page); lv_obj_set_size(scroll, 700, 350); lv_obj_align(scroll, LV_ALIGN_CENTER, 0, 0); student_list = lv_obj_create(scroll); lv_obj_set_size(student_list, LV_PCT(100), LV_SIZE_CONTENT); lv_obj_set_flex_flow(student_list, LV_FLEX_FLOW_COLUMN); // 返回按钮 lv_obj_t *back_btn = lv_btn_create(list_page); lv_obj_set_size(back_btn, 150, 50); lv_obj_align(back_btn, LV_ALIGN_BOTTOM_MID, 0, -20); lv_obj_t *back_label = lv_label_create(back_btn); lv_label_set_text(back_label, "Back"); lv_obj_add_event_cb(back_btn, show_main_page, LV_EVENT_CLICKED, NULL); } // 创建编辑页面 void create_edit_page() { edit_page = lv_obj_create(NULL); lv_obj_t *title = lv_label_create(edit_page); lv_label_set_text(title, "Edit Student Score"); lv_obj_align(title, LV_ALIGN_TOP_MID, 0, 20); lv_obj_set_style_text_font(title, &lv_font_montserrat_20, 0); // 表单容器 lv_obj_t *form = lv_obj_create(edit_page); lv_obj_set_size(form, 500, 200); lv_obj_align(form, LV_ALIGN_CENTER, 0, 0); lv_obj_set_flex_flow(form, LV_FLEX_FLOW_COLUMN); lv_obj_set_flex_align(form, LV_FLEX_ALIGN_CENTER, LV_FLEX_ALIGN_CENTER, LV_FLEX_ALIGN_CENTER); lv_obj_set_style_pad_all(form, 20, 0); lv_obj_set_style_pad_row(form, 30, 0); // 成绩输入 lv_obj_t *score_container = lv_obj_create(form); lv_obj_set_size(score_container, LV_PCT(100), 60); lv_obj_set_flex_flow(score_container, LV_FLEX_FLOW_ROW); lv_obj_t *score_label = lv_label_create(score_container); lv_label_set_text(score_label, "New Score:"); lv_obj_set_width(score_label, LV_PCT(40)); ta_edit_score = lv_textarea_create(score_container); lv_textarea_set_one_line(ta_edit_score, true); lv_textarea_set_max_length(ta_edit_score, 5); lv_textarea_set_accepted_chars(ta_edit_score, "0123456789."); lv_obj_set_width(ta_edit_score, LV_PCT(60)); lv_obj_add_event_cb(ta_edit_score, ta_event_cb, LV_EVENT_ALL, NULL); // 按钮容器 lv_obj_t *btn_container = lv_obj_create(form); lv_obj_set_size(btn_container, LV_PCT(100), 60); lv_obj_set_flex_flow(btn_container, LV_FLEX_FLOW_ROW); lv_obj_set_flex_align(btn_container, LV_FLEX_ALIGN_SPACE_AROUND, LV_FLEX_ALIGN_CENTER, LV_FLEX_ALIGN_CENTER); // 更新按钮 lv_obj_t *update_btn = lv_btn_create(btn_container); lv_obj_set_size(update_btn, 150, 50); lv_obj_t *update_label = lv_label_create(update_btn); lv_label_set_text(update_label, "Update"); lv_obj_add_event_cb(update_btn, update_student_cb, LV_EVENT_CLICKED, NULL); // 取消按钮 lv_obj_t *cancel_btn = lv_btn_create(btn_container); lv_obj_set_size(cancel_btn, 150, 50); lv_obj_t *cancel_label = lv_label_create(cancel_btn); lv_label_set_text(cancel_label, "Cancel"); lv_obj_add_event_cb(cancel_btn, show_list_page, LV_EVENT_CLICKED, NULL); } // 创建键盘 - 增强版 void create_keyboard() { kb = lv_keyboard_create(lv_layer_top()); lv_obj_set_size(kb, LV_HOR_RES, LV_VER_RES / 2); lv_obj_align(kb, LV_ALIGN_BOTTOM_MID, 0, 0); lv_obj_add_flag(kb, LV_OBJ_FLAG_HIDDEN); lv_obj_add_event_cb(kb, kb_event_cb, LV_EVENT_ALL, NULL); // 设置键盘模式 lv_keyboard_set_mode(kb, LV_KEYBOARD_MODE_TEXT_LOWER); // 添加关闭按钮到键盘 lv_obj_t *close_btn = lv_btn_create(kb); lv_obj_set_size(close_btn, 80, 40); lv_obj_align(close_btn, LV_ALIGN_TOP_RIGHT, -10, 10); lv_obj_t *close_label = lv_label_create(close_btn); lv_label_set_text(close_label, LV_SYMBOL_CLOSE); lv_obj_set_style_text_font(close_label, &lv_font_montserrat_24, 0); lv_obj_add_event_cb(close_btn, hide_keyboard, LV_EVENT_CLICKED, NULL); } // 退出系统回调 void exit_system_cb(lv_event_t *e) { exit(0); } // 初始化UI void ui_init() { create_main_page(); create_add_page(); create_list_page(); create_edit_page(); create_keyboard(); show_main_page(); }
06-20
该函数从三个文本框中获取文本，然后构造一个Student结构体，并调用`add_student`函数将其保存。如果保存成功（返回0），则跳转到列表页面。可能的问题点：-文本框内容获取不正确-数据类型转换出错（ID和成绩）-保存...
#include "hmi_coffee_main_page.h" #include <src/core/lv_obj.h> #include <src/core/lv_obj_pos.h> #include <src/core/lv_obj_style_gen.h> #include <src/display/lv_display.h> #include <src/misc/lv_area.h> #include <src/misc/lv_palette.h> #include <src/widgets/image/lv_image.h> #include <string.h> #include "hmi_make_coffee_page.h" #include "stdio.h" #include "main/src/image/image.h" #include "main/src/fonts/font.h" HMI_REGISTER_PAGE(hmi_coffee_main_page,COFFE_MAIN_PAGE) // 声明 DECLARE_PAGE(hmi_make_coffee_page); extern hmi_coffee_main_page_t hmi_coffee_main_page; extern const lv_img_dsc_t *hot_coffe_types_big_image[]; extern const char *hot_coffe_types_name[]; extern const lv_img_dsc_t *cold_coffe_types_big_image[]; extern const char *cold_coffe_types_name[]; int hot_drink_count(void); int cold_drink_count(void); static void hot_drink_selected_cb(lv_event_t *e); #define LIST_ITEM_HEIGHT 303 // 定义列表项高度 #define LIST_ITEM_WIDTH 230 // 定义列表项宽度 #define LIST_NUM 14 // 定义列表项数量（与图片数组长度一致） #define LIST_HEIGHT 303 // 定义列表高度 #define LIST_WIDTH 1280 // 定义列表宽度 typedef struct { const lv_img_dsc_t* img; const char* name; } coffee_transfer_info_t; /**************************************************/ // 页面独有的方法 /**************************************************/ // 用于跟踪当前是热饮还是冷饮列表 static bool hot_lable_event = true; // 饮品点击事件处理函数 static void drink_item_click_handler(lv_event_t *e) { coffee_transfer_info_t *data = lv_event_get_user_data(e); // 跳转到制作咖啡页面并传递数据 page_manager_go_to(INSTANCE_PAGE(hmi_make_coffee_page), data); } static lv_obj_t *create_hot_list_item(lv_obj_t *list, const lv_img_dsc_t *img_src, const char *text, int index) { // 创建列表项 lv_obj_t *item = lv_obj_create(list); // 设置列表项的宽度和高度 lv_obj_set_size(item, LIST_ITEM_WIDTH, LIST_ITEM_HEIGHT); // 设置列表项的样式 lv_obj_set_style_bg_opa(item, 0, 0);// 设置背景透明 lv_obj_set_style_bg_color(item, lv_color_hex(0xff0000), 0); // 设置背景颜色为红色 lv_obj_set_style_border_width(item, 0, 0); // 设置边框宽度为0 //lv_obj_align(item,LV_ALIGN_TOP_MID, 0, 0); lv_obj_set_scroll_dir(item, LV_DIR_NONE);// 设置列表项的滚动方向为无 lv_obj_remove_style(item, NULL, LV_PART_SCROLLBAR);// 移除列表滚动条样式 if (img_src != NULL) { // 创建图片对象 lv_obj_t *image = lv_image_create(item); // 设置图片源 lv_image_set_src(image, img_src); // 设置图片对齐方式为底部中间 lv_obj_align(image, LV_ALIGN_BOTTOM_MID, 0, -40); // 创建按钮对象 lv_obj_t *button = lv_obj_create(item); // 设置按钮的大小和位置 lv_obj_set_size(button, LIST_ITEM_WIDTH, LIST_ITEM_HEIGHT); // 设置按钮背景透明 lv_obj_set_style_bg_opa(button, 0, 0); // 设置按钮边框宽度为0 lv_obj_set_style_border_width(button, 0, 0); // 设置按钮圆角为0 lv_obj_set_style_radius(button, 0, 0); // 设置按钮对齐方式为底部中间 lv_obj_align(button, LV_ALIGN_BOTTOM_MID, 0, -40); // 为按钮添加用户数据 /*coffee_transfer_info_t *data = lv_mem_alloc(sizeof(coffee_transfer_info_t)); data->img = img_src; data->name = text; lv_obj_add_event_cb(button, drink_item_click_handler, LV_EVENT_CLICKED, data);*/ // 创建标签文本 lv_obj_t *name = lv_label_create(item); // 设置标签的字体 lv_obj_set_style_text_font(name, &SourceHan_Sans_SC_regular_26, 0); // 设置标签的颜色 lv_obj_set_style_text_color(name, lv_color_hex(0xffffff), 0); // 设置标签文本 lv_label_set_text(name, text); // 设置标签对齐方式为底部中间 lv_obj_align(name, LV_ALIGN_BOTTOM_MID, 0, 0); } return item; } static void hot_drink_selected_cb(lv_event_t *e) { // 获取用户传递的索引（通过user_data） int *index_ptr = lv_event_get_user_data(e); int index = *index_ptr; /*/ 构造传递给制作页面的参数 coffee_transfer_info_t info = { .coffee_image = hot_coffe_types_big_image[index], // 当前热饮的图片 .coffee_name = hot_coffe_types_name[index] // 当前热饮的名称 }; // 跳转到咖啡制作页面，并传递参数 page_manager_go_to(INSTANCE_PAGE(hmi_make_coffee_page), &info);*/ } static lv_obj_t *create_cold_list_item(lv_obj_t *list, const lv_img_dsc_t *img_src, const char *text) { // 创建列表项 lv_obj_t *item = lv_obj_create(list); // 设置列表项的宽度和高度 lv_obj_set_size(item, LIST_ITEM_WIDTH, LIST_ITEM_HEIGHT); // 设置列表项的样式 lv_obj_set_style_bg_opa(item, 0, 0);// 设置背景透明 lv_obj_set_style_bg_color(item, lv_color_hex(0xff0000), 0); // 设置背景颜色为红色 lv_obj_set_style_border_width(item, 0, 0); // 设置边框宽度为0 //lv_obj_align(item,LV_ALIGN_TOP_MID, 0, 0); lv_obj_set_scroll_dir(item, LV_DIR_NONE);// 设置列表项的滚动方向为无 lv_obj_remove_style(item, NULL, LV_PART_SCROLLBAR);// 移除列表滚动条样式 if (img_src != NULL) { // 创建图片对象 lv_obj_t *image = lv_image_create(item); // 设置图片源 lv_image_set_src(image, img_src); // 设置图片对齐方式为底部中间 lv_obj_align(image, LV_ALIGN_BOTTOM_MID, 0, -40); // 创建按钮对象 lv_obj_t *button = lv_obj_create(item); // 设置按钮的大小和位置 lv_obj_set_size(button, LIST_ITEM_WIDTH, LIST_ITEM_HEIGHT); // 设置按钮背景透明 lv_obj_set_style_bg_opa(button, 0, 0); // 设置按钮边框宽度为0 lv_obj_set_style_border_width(button, 0, 0); // 设置按钮圆角为0 lv_obj_set_style_radius(button, 0, 0); // 设置按钮对齐方式为底部中间 lv_obj_align(button, LV_ALIGN_BOTTOM_MID, 0, -40); // 创建标签文本 lv_obj_t *name = lv_label_create(item); // 设置标签的字体 lv_obj_set_style_text_font(name, &SourceHan_Sans_SC_regular_26, 0); // 设置标签的颜色 lv_obj_set_style_text_color(name, lv_color_hex(0xffffff), 0); // 设置标签文本 lv_label_set_text(name, text); // 设置标签对齐方式为底部中间 lv_obj_align(name, LV_ALIGN_BOTTOM_MID, 0, 0); } return item; } static void create_hot_drinks() { // 添加列表项，显示图片 for (int i = 0; i < hot_drink_count(); i++) { if (hot_coffe_types_big_image[i] != NULL) { create_hot_list_item(hmi_coffee_main_page.coffee_main_list, hot_coffe_types_big_image[i], hot_coffe_types_name[i],i); } } } static void create_cold_drinks() { // 添加列表项，显示图片 for (int i = 0; i < cold_drink_count(); i++) { if (cold_coffe_types_big_image[i] != NULL) { create_cold_list_item(hmi_coffee_main_page.coffee_main_list, cold_coffe_types_big_image[i], cold_coffe_types_name[i]); } } } static void hmi_coffee_main_page_hot_or_cold_label_event(lv_event_t *e) { lv_obj_t *obj = lv_event_get_target(e); // 重置文本颜色 lv_obj_set_style_text_color(hmi_coffee_main_page.coffee_main_hot_text, lv_color_hex(0xFFFFFF), 0); lv_obj_set_style_text_color(hmi_coffee_main_page.coffee_main_cold_text, lv_color_hex(0xFFFFFF), 0); if (obj == hmi_coffee_main_page.coffee_main_cold_text) { lv_obj_set_style_text_color(hmi_coffee_main_page.coffee_main_cold_text, lv_color_hex(0xE9BD85), 0); } else if (obj == hmi_coffee_main_page.coffee_main_hot_text) { lv_obj_set_style_text_color(hmi_coffee_main_page.coffee_main_hot_text, lv_color_hex(0xE9BD85), 0); } if (obj == hmi_coffee_main_page.coffee_main_hot_text) { // 删除冷饮项并创建热饮项 if (!hot_lable_event) { // 删除所有子对象 lv_obj_clean(hmi_coffee_main_page.coffee_main_list); create_hot_drinks(); hot_lable_event = true; } } else if (obj == hmi_coffee_main_page.coffee_main_cold_text) { // 删除热饮项并创建冷饮项 if (hot_lable_event) { // 删除所有子对象 lv_obj_clean(hmi_coffee_main_page.coffee_main_list); create_cold_drinks(); hot_lable_event = false; } } } // 滚动结束事件回调函数，实现吸附功能 static void list_scroll_end_event_cb(lv_event_t * e) { lv_obj_t * list = lv_event_get_target(e); lv_coord_t scroll_x = lv_obj_get_scroll_x(list); // 水平滚动，获取 x 轴滚动位置 lv_obj_t * first_item = lv_obj_get_child(list, 0); // 获取第一个列表项 if (!first_item) return; lv_coord_t item_width = lv_obj_get_width(first_item); // 获取列表项宽度 lv_coord_t pad_column = lv_obj_get_style_pad_column(list, 0); // 获取列间距 // 计算吸附位置 int new_scroll_x = ((scroll_x + item_width / 2 + pad_column / 2) / (item_width + pad_column)) * (item_width + pad_column); // 设置新的滚动位置 lv_obj_scroll_to_x(list, new_scroll_x, LV_ANIM_ON); } /**************************************************/ // 下面是通用方法的实现 /**************************************************/ /* 页面初始化 通用*/ static void page_init() { hmi_coffee_main_page_t *page = &hmi_coffee_main_page; // 创建屏幕 page->base.screen = lv_obj_create(NULL); // 移除列表滚动条样式 lv_obj_remove_style(page->base.screen, NULL, LV_PART_SCROLLBAR); // 禁用列表滚动功能 lv_obj_clear_flag(page->base.screen, LV_OBJ_FLAG_SCROLLABLE); // 设置背景图片 page->hmi_coffee_main_page_bg = lv_image_create(page->base.screen); lv_image_set_src(page->hmi_coffee_main_page_bg, &hmi_coffee_main_page_bg); lv_obj_align(page->hmi_coffee_main_page_bg, LV_ALIGN_CENTER, 0,0); // 创建列表 page->coffee_main_list = lv_obj_create(page->base.screen); // 设置列表的宽度和高度 lv_obj_set_size(page->coffee_main_list, LIST_WIDTH, LIST_HEIGHT); // 设置列表背景透明 lv_obj_set_style_bg_opa(page->coffee_main_list, 0, 0); // 设置列表边框宽度为 0 lv_obj_set_style_border_width(page->coffee_main_list, 0, 0); // 设置列表对齐方式 lv_obj_align(page->coffee_main_list, LV_ALIGN_TOP_LEFT, 0, 54); // 移除列表滚动条样式 lv_obj_remove_style(page->coffee_main_list, NULL, LV_PART_SCROLLBAR); // 禁用列表弹性滚动 lv_obj_clear_flag(page->coffee_main_list, LV_OBJ_FLAG_SCROLL_ELASTIC); // 设置列表滚动方向为水平 lv_obj_set_scroll_dir(page->coffee_main_list, LV_DIR_HOR); // 设置列表的布局方式为水平布局 lv_obj_set_flex_flow(page->coffee_main_list, LV_FLEX_FLOW_ROW); // 设置列表的间距 lv_obj_set_style_pad_column(page->coffee_main_list, 20, 0); // 添加滚动结束事件回调 lv_obj_add_event_cb(page->coffee_main_list, list_scroll_end_event_cb, LV_EVENT_SCROLL_END, NULL); page->coffee_main_hot_text = lv_label_create(page->base.screen); lv_label_set_text(page->coffee_main_hot_text, "热饮"); lv_obj_add_flag(page->coffee_main_hot_text, LV_OBJ_FLAG_CLICKABLE); // 确保能点击到，不然点不到文字 lv_obj_set_style_text_color(page->coffee_main_hot_text, lv_color_hex(0xE9BD85), 0); lv_obj_set_style_text_font(page->coffee_main_hot_text, &SourceHan_Sans_SC_regular_26, 0); lv_obj_set_size(page->coffee_main_hot_text, 52, 33); // 设置标签宽度和高度 lv_obj_set_style_text_align(page->coffee_main_hot_text, LV_TEXT_ALIGN_CENTER, 0); // 添加文字居中对齐 lv_obj_align(page->coffee_main_hot_text, LV_ALIGN_TOP_LEFT, 516, 34); lv_obj_add_event_cb(page->coffee_main_hot_text, hmi_coffee_main_page_hot_or_cold_label_event,LV_EVENT_CLICKED, NULL); create_hot_drinks(); page->coffee_main_cold_text = lv_label_create(page->base.screen); lv_label_set_text(page->coffee_main_cold_text, "冷饮"); lv_obj_add_flag(page->coffee_main_cold_text, LV_OBJ_FLAG_CLICKABLE); // 确保能点击到，不然点不到文字 lv_obj_set_style_text_color(page->coffee_main_cold_text, lv_color_hex(0xffffff), 0); //设置字体颜色 lv_obj_set_style_text_font(page->coffee_main_cold_text, &SourceHan_Sans_SC_regular_26, 0);//设置字体 lv_obj_set_size(page->coffee_main_cold_text, 52, 33); // 设置标签宽度和高度 lv_obj_set_style_text_align(page->coffee_main_cold_text, LV_TEXT_ALIGN_CENTER, 0); // 添加文字居中对齐 lv_obj_align(page->coffee_main_cold_text, LV_ALIGN_TOP_LEFT, 712, 34); lv_obj_add_event_cb(page->coffee_main_cold_text, hmi_coffee_main_page_hot_or_cold_label_event,LV_EVENT_CLICKED, NULL); //锁屏 page->hmi_coffee_main_page_lock_icon = lv_image_create(page->base.screen); lv_image_set_src(page->hmi_coffee_main_page_lock_icon, &hmi_coffee_main_page_lock); lv_obj_align(page->hmi_coffee_main_page_lock_icon, LV_ALIGN_TOP_LEFT, 78, 417); page->hmi_coffee_main_page_lock_text = lv_label_create(page->base.screen); lv_label_set_text(page->hmi_coffee_main_page_lock_text, "童锁"); lv_obj_add_flag(page->hmi_coffee_main_page_lock_text, LV_OBJ_FLAG_CLICKABLE); // 确保能点击到，不然点不到文字 lv_obj_set_style_text_color(page->hmi_coffee_main_page_lock_text, lv_color_hex(0xffffff), 0); //设置字体颜色 lv_obj_set_style_text_font(page->hmi_coffee_main_page_lock_text, &SourceHan_Sans_SC_regular_26, 0);//设置字体 lv_obj_set_size(page->hmi_coffee_main_page_lock_text, 52, 33); // 设置标签宽度和高度 lv_obj_set_style_text_align(page->hmi_coffee_main_page_lock_text, LV_TEXT_ALIGN_CENTER, 0); // 添加文字居中对齐 lv_obj_align(page->hmi_coffee_main_page_lock_text, LV_ALIGN_TOP_LEFT, 126, 417); //用户 page->hmi_coffee_main_page_user_icon = lv_image_create(page->base.screen); lv_image_set_src(page->hmi_coffee_main_page_user_icon, &hmi_coffee_main_page_user); lv_obj_align(page->hmi_coffee_main_page_user_icon, LV_ALIGN_TOP_LEFT, 330, 417); page->hmi_coffee_main_page_user_text = lv_label_create(page->base.screen); lv_label_set_text(page->hmi_coffee_main_page_user_text, "用户"); lv_obj_add_flag(page->hmi_coffee_main_page_user_text, LV_OBJ_FLAG_CLICKABLE); // 确保能点击到，不然点不到文字 lv_obj_set_style_text_color(page->hmi_coffee_main_page_user_text, lv_color_hex(0xffffff), 0); //设置字体颜色 lv_obj_set_style_text_font(page->hmi_coffee_main_page_user_text, &SourceHan_Sans_SC_regular_26, 0);//设置字体 lv_obj_set_size(page->hmi_coffee_main_page_user_text, 52, 33); // 设置标签宽度和高度 lv_obj_set_style_text_align(page->hmi_coffee_main_page_user_text, LV_TEXT_ALIGN_CENTER, 0); // 添加文字居中对齐 lv_obj_align(page->hmi_coffee_main_page_user_text, LV_ALIGN_TOP_LEFT, 385, 417); //设置 page->hmi_coffee_main_page_setting_icon = lv_image_create(page->base.screen); lv_image_set_src(page->hmi_coffee_main_page_setting_icon, &hmi_coffee_main_page_setting); lv_obj_align(page->hmi_coffee_main_page_setting_icon, LV_ALIGN_TOP_LEFT, 588, 417); page->hmi_coffee_main_page_setting_text = lv_label_create(page->base.screen); lv_label_set_text(page->hmi_coffee_main_page_setting_text, "设置"); lv_obj_add_flag(page->hmi_coffee_main_page_setting_text, LV_OBJ_FLAG_CLICKABLE); // 确保能点击到，不然点不到文字 lv_obj_set_style_text_color(page->hmi_coffee_main_page_setting_text, lv_color_hex(0xffffff), 0); //设置字体颜色 lv_obj_set_style_text_font(page->hmi_coffee_main_page_setting_text, &SourceHan_Sans_SC_regular_26, 0);//设置字体 lv_obj_set_size(page->hmi_coffee_main_page_setting_text, 52, 33); // 设置标签宽度和高度 lv_obj_set_style_text_align(page->hmi_coffee_main_page_setting_text, LV_TEXT_ALIGN_CENTER, 0); // 添加文字居中对齐 lv_obj_align(page->hmi_coffee_main_page_setting_text, LV_ALIGN_TOP_LEFT, 640, 417); //收藏 page->hmi_coffee_main_page_collection_icon = lv_image_create(page->base.screen); lv_image_set_src(page->hmi_coffee_main_page_collection_icon, &hmi_coffee_main_page_collection); lv_obj_align(page->hmi_coffee_main_page_collection_icon, LV_ALIGN_TOP_LEFT, 842, 417); page->hmi_coffee_main_page_collection_text = lv_label_create(page->base.screen); lv_label_set_text(page->hmi_coffee_main_page_collection_text, "收藏"); lv_obj_add_flag(page->hmi_coffee_main_page_collection_text, LV_OBJ_FLAG_CLICKABLE); // 确保能点击到，不然点不到文字 lv_obj_set_style_text_color(page->hmi_coffee_main_page_collection_text, lv_color_hex(0xffffff), 0); //设置字体颜色 lv_obj_set_style_text_font(page->hmi_coffee_main_page_collection_text, &SourceHan_Sans_SC_regular_26, 0);//设置字体 lv_obj_set_size(page->hmi_coffee_main_page_collection_text, 52, 33); // 设置标签宽度和高度 lv_obj_set_style_text_align(page->hmi_coffee_main_page_collection_text, LV_TEXT_ALIGN_CENTER, 0); // 添加文字居中对齐 lv_obj_align(page->hmi_coffee_main_page_collection_text, LV_ALIGN_TOP_LEFT, 898, 417); //快速冲洗 page->hmi_coffee_main_page_fast_rinse_icon = lv_image_create(page->base.screen); lv_image_set_src(page->hmi_coffee_main_page_fast_rinse_icon, &hmi_coffee_main_page_fast_rinse); lv_obj_align(page->hmi_coffee_main_page_fast_rinse_icon, LV_ALIGN_TOP_LEFT, 1072, 417); page->hmi_coffee_main_page_fast_rinse_text = lv_label_create(page->base.screen); lv_label_set_text(page->hmi_coffee_main_page_fast_rinse_text, "快速冲洗"); lv_obj_add_flag(page->hmi_coffee_main_page_fast_rinse_text, LV_OBJ_FLAG_CLICKABLE); // 确保能点击到，不然点不到文字 lv_obj_set_style_text_color(page->hmi_coffee_main_page_fast_rinse_text, lv_color_hex(0xffffff), 0); //设置字体颜色 lv_obj_set_style_text_font(page->hmi_coffee_main_page_fast_rinse_text, &SourceHan_Sans_SC_regular_26, 0);//设置字体 lv_obj_set_size(page->hmi_coffee_main_page_fast_rinse_text, 104, 33); // 设置标签宽度和高度 lv_obj_set_style_text_align(page->hmi_coffee_main_page_fast_rinse_text, LV_TEXT_ALIGN_CENTER, 0); // 添加文字居中对齐 lv_obj_align(page->hmi_coffee_main_page_fast_rinse_text, LV_ALIGN_TOP_LEFT, 1127, 417); } /* 页面进入 通用*/ static void page_enter(void *args) {} /* 页面退出 通用*/ static void page_exit() {} /* 页面销毁 通用*/ static void page_destroy(void) {} /* 主页面update实现 */ static void page_update(const hmi_global_data_t *data) {}
最新发布
07-04
然后在事件回调函数`drink_item_click_handler`中，我们通过`lv_event_get_user_data(e)`获取到索引，然后根据全局变量`hot_lable_event`来判断当前是热饮还是冷饮，从而选择从哪个数组中获取图片和名称。...
编译无问题，但存在段错误，检测并修改错误函数，将修改后的完整函数写出来： #include "lvgl/lvgl.h" #include "lvgl/demos/lv_demos.h" #include <unistd.h> #include <pthread.h> #include <time.h> #include <stdio.h> #include <stdlib.h> #include <string.h> #include "game.h" // 定义颜色常量 #define PRIMARY_COLOR lv_color_hex(0x1a1a2e) #define SECONDARY_COLOR lv_color_hex(0x16213e) #define ACCENT_COLOR lv_color_hex(0x0f3460) #define HIGHLIGHT_COLOR lv_color_hex(0xe94560) #define TEXT_COLOR lv_color_hex(0xffffff) // 用户结构体 typedef struct { char username[20]; char password[20]; int high_score; } User; // 游戏结构体 typedef struct { int x[100]; int y[100]; int length; int direction; int food_x; int food_y; int score; int speed; int game_over; } SnakeGame; // 全局变量 static lv_obj_t *login_scr; static lv_obj_t *register_scr; static lv_obj_t *main_menu_scr; static lv_obj_t *game_scr; static lv_obj_t *scoreboard_scr; static SnakeGame game; static User current_user; static User users[10]; static int user_count = 0; static lv_timer_t *game_timer; static void game_timer_cb(lv_timer_t *timer); static lv_obj_t *game_container = NULL; static lv_obj_t *overlay = NULL; static lv_obj_t *score_label_game = NULL; // 函数原型声明 void save_users(); void load_users(); int find_user(const char *username); void register_user(const char *username, const char *password); int login_user(const char *username, const char *password); void update_user_score(int score); void init_game(); void generate_food(); void move_snake(); void check_collision(); void create_login_screen(); void create_register_screen(); void create_main_menu(); void create_game_screen(); void create_scoreboard_screen(); void switch_screen(lv_obj_t *new_screen); // 用户管理函数 void save_users() { FILE *file = fopen("users.dat", "wb"); if (file) { fwrite(&user_count, sizeof(int), 1, file); fwrite(users, sizeof(User), user_count, file); fclose(file); } } void load_users() { FILE *file = fopen("users.dat", "rb"); if (file) { size_t read_count = fread(&user_count, sizeof(int), 1, file); if (read_count == 1 && user_count > 0 && user_count <= 10) { fread(users, sizeof(User), user_count, file); } else { user_count = 0; } fclose(file); } else { user_count = 0; // 初始化用户数量 } } int find_user(const char *username) { for (int i = 0; i < user_count; i++) { if (strcmp(users[i].username, username) == 0) { return i; } } return -1; } void register_user(const char *username, const char *password) { if (user_count >= 10) return; if (find_user(username) != -1) return; strcpy(users[user_count].username, username); strcpy(users[user_count].password, password); users[user_count].high_score = 0; user_count++; save_users(); } int login_user(const char *username, const char *password) { int idx = find_user(username); if (idx == -1) return 0; if (strcmp(users[idx].password, password) != 0) return 0; current_user = users[idx]; return 1; } void update_user_score(int score) { if (score > current_user.high_score) { current_user.high_score = score; } int idx = find_user(current_user.username); if (idx != -1) { users[idx] = current_user; save_users(); } } // 游戏初始化 void init_game() { srand(time(NULL)); game.length = 3; game.direction = 2; // 初始向右移动 game.score = 0; game.speed = 150; game.game_over = 0; // 初始化蛇身位置 - 修改这里 for (int i = 0; i < game.length; i++) { // 蛇头在中间，蛇身向右延伸 game.x[i] = 10 + i; // 初始位置 (10,10), (11,10), (12,10) game.y[i] = 10; } // 生成食物 generate_food(); } void generate_food() { int valid = 0; // 修复：声明valid变量 int attempts = 0; while (!valid && attempts < 100) { game.food_x = rand() % 20; game.food_y = rand() % 20; valid = 1; for (int i = 0; i < game.length; i++) { if (game.x[i] == game.food_x && game.y[i] == game.food_y) { valid = 0; break; } } attempts++; } if (!valid) { // 设置安全位置作为后备 game.food_x = 10; // 中间位置 game.food_y = 10; // 确保这个位置没有蛇身 for (int i = 0; i < game.length; i++) { if (game.x[i] == 10 && game.y[i] == 10) { game.food_x = 11; // 如果中间有蛇，使用旁边位置 game.food_y = 10; break; } } } } void move_snake() { if (game.game_over) return; // 保存蛇尾位置（用于绘制） int prev_x = game.x[game.length-1]; int prev_y = game.y[game.length-1]; // 移动蛇身 for (int i = game.length-1; i > 0; i--) { game.x[i] = game.x[i-1]; game.y[i] = game.y[i-1]; } // 移动蛇头 switch (game.direction) { case 0: game.y[0]--; break; // 上 case 1: game.y[0]++; break; // 下 case 2: game.x[0]++; break; // 右 case 3: game.x[0]--; break; // 左 } // 检查是否吃到食物 if (game.x[0] == game.food_x && game.y[0] == game.food_y) { // 只在吃到食物时才增加长度 if (game.length < 100) { // 检查长度限制 game.length++; // 增加蛇身 game.x[game.length-1] = prev_x; game.y[game.length-1] = prev_y; } else { // 处理达到最大长度的情况 game.game_over = 1; } // 生成新食物 generate_food(); // 增加速度 if (game.speed > 50) { game.speed -= 5; lv_timer_set_period(game_timer, game.speed); } } // 检查碰撞 check_collision(); } void check_collision() { // 检查墙壁碰撞 if (game.x[0] < 0 || game.x[0] >= 20 || game.y[0] < 0 || game.y[0] >= 20) { game.game_over = 1; return; } // 检查自身碰撞 for (int i = 1; i < game.length; i++) { if (game.x[0] == game.x[i] && game.y[0] == game.y[i]) { game.game_over = 1; return; } } } // 修改后的 switch_screen 函数 void switch_screen(lv_obj_t *new_screen) { lv_disp_t *disp = lv_disp_get_default(); lv_disp_load_scr(new_screen); } // 定时器回调辅助函数 static void timer_callback(lv_timer_t *t) { lv_obj_del(t->user_data); lv_timer_del(t); } // 登录回调函数 static void login_btn_cb(lv_event_t *e) { lv_obj_t *username_ta = lv_obj_get_child(login_scr, 1); lv_obj_t *password_ta = lv_obj_get_child(login_scr, 3); const char *username = lv_textarea_get_text(username_ta); const char *password = lv_textarea_get_text(password_ta); if (login_user(username, password)) { switch_screen(main_menu_scr); } else { lv_obj_t *error_label = lv_label_create(login_scr); lv_label_set_text(error_label, "用户名或密码错误"); lv_obj_set_style_text_color(error_label, lv_color_hex(0xff0000), 0); lv_obj_align(error_label, LV_ALIGN_BOTTOM_MID, 0, -20); lv_timer_t *timer = lv_timer_create(timer_callback, 2000, error_label); } } // 注册回调函数 static void register_btn_cb(lv_event_t *e) { lv_obj_t *username_ta = lv_obj_get_child(register_scr, 1); lv_obj_t *password_ta = lv_obj_get_child(register_scr, 3); lv_obj_t *confirm_ta = lv_obj_get_child(register_scr, 5); const char *username = lv_textarea_get_text(username_ta); const char *password = lv_textarea_get_text(password_ta); const char *confirm = lv_textarea_get_text(confirm_ta); if (strlen(username) < 3) { lv_obj_t *error_label = lv_label_create(register_scr); lv_label_set_text(error_label, "用户名至少3个字符"); lv_obj_set_style_text_color(error_label, lv_color_hex(0xff0000), 0); lv_obj_align(error_label, LV_ALIGN_BOTTOM_MID, 0, -20); lv_timer_t *timer = lv_timer_create(timer_callback, 2000, error_label); return; } if (strcmp(password, confirm) != 0) { lv_obj_t *error_label = lv_label_create(register_scr); lv_label_set_text(error_label, "两次输入的密码不一致"); lv_obj_set_style_text_color(error_label, lv_color_hex(0xff0000), 0); lv_obj_align(error_label, LV_ALIGN_BOTTOM_MID, 0, -20); lv_timer_t *timer = lv_timer_create(timer_callback, 2000, error_label); return; } register_user(username, password); switch_screen(login_scr); } // 菜单按钮回调 static void menu_btn_cb(lv_event_t *e) { if (e->code == LV_EVENT_CLICKED) { switch_screen(main_menu_scr); } } // 注册按钮回调 static void register_btn_handler(lv_event_t *e) { if (e->code == LV_EVENT_CLICKED) { switch_screen(register_scr); } } // 返回登录回调 static void back_to_login_cb(lv_event_t *e) { if (e->code == LV_EVENT_CLICKED) { switch_screen(login_scr); } } // 开始游戏回调 static void play_game_cb(lv_event_t *e) { // 清除之前的定时器 if (game_timer) { lv_timer_del(game_timer); game_timer = NULL; } // 清除之前的覆盖层 if (overlay) { lv_obj_del(overlay); overlay = NULL; } init_game(); switch_screen(game_scr); if (score_label_game) { lv_label_set_text(score_label_game, "分数: 0"); } game_timer = lv_timer_create(game_timer_cb, game.speed, NULL); } // 排行榜回调 static void show_scoreboard_cb(lv_event_t *e) { if (e->code == LV_EVENT_CLICKED) { switch_screen(scoreboard_scr); } } // 退出登录回调 static void logout_cb(lv_event_t *e) { if (e->code == LV_EVENT_CLICKED) { switch_screen(login_scr); } } // 返回主菜单回调 static void back_to_menu_cb(lv_event_t *e) { if (e->code == LV_EVENT_CLICKED) { switch_screen(main_menu_scr); } } // 游戏控制回调 static void game_timer_cb(lv_timer_t *timer) { // 检查容器是否有效 - 使用全局变量 if (!game_container) { return; } move_snake(); // 更新UI - 使用全局分数标签 if (score_label_game) { lv_label_set_text_fmt(score_label_game, "分数: %d", game.score); } // 清除之前的绘制 lv_obj_clean(game_container); // 绘制食物 (添加有效性检查) if (game.food_x >= 0 && game.food_y >= 0) { // 修复：移除重复的变量声明 lv_obj_t *food = lv_obj_create(game_container); lv_obj_set_size(food, 15, 15); // 每个格子15x15像素 lv_obj_set_pos(food, game.food_x * 15, game.food_y * 15); lv_obj_set_style_bg_color(food, HIGHLIGHT_COLOR, 0); lv_obj_set_style_radius(food, LV_RADIUS_CIRCLE, 0); lv_obj_set_style_border_width(food, 0, 0); } // 绘制蛇身 for (int i = 0; i < game.length; i++) { lv_obj_t *snake_part = lv_obj_create(game_container); lv_obj_set_size(snake_part, 15, 15); lv_obj_set_pos(snake_part, game.x[i] * 15, game.y[i] * 15); if (i == 0) { // 蛇头 lv_obj_set_style_bg_color(snake_part, HIGHLIGHT_COLOR, 0); } else { // 蛇身 lv_obj_set_style_bg_color(snake_part, lv_color_hex(0x00ff00), 0); } lv_obj_set_style_border_width(snake_part, 0, 0); } lv_obj_invalidate(game_scr); if (game.game_over) { lv_timer_del(game_timer); // 显示游戏结束画面 overlay = lv_obj_create(game_scr); lv_obj_set_size(overlay, lv_pct(100), lv_pct(100)); lv_obj_set_style_bg_color(overlay, lv_color_hex(0x000000), 0); lv_obj_set_style_bg_opa(overlay, LV_OPA_50, 0); lv_obj_set_style_radius(overlay, 0, 0); lv_obj_t *game_over_label = lv_label_create(overlay); lv_label_set_text(game_over_label, "游戏结束!"); lv_obj_set_style_text_font(game_over_label, &lv_font_montserrat_28, 0); lv_obj_set_style_text_color(game_over_label, HIGHLIGHT_COLOR, 0); lv_obj_align(game_over_label, LV_ALIGN_CENTER, 0, -40); // 修复：使用正确的变量名 final_score_label lv_obj_t *final_score_label = lv_label_create(overlay); lv_label_set_text_fmt(final_score_label, "最终分数: %d", game.score); lv_obj_set_style_text_font(final_score_label, &lv_font_montserrat_24, 0); lv_obj_set_style_text_color(final_score_label, TEXT_COLOR, 0); lv_obj_align(final_score_label, LV_ALIGN_CENTER, 0, 0); update_user_score(game.score); lv_obj_t *menu_btn = lv_btn_create(overlay); lv_obj_set_size(menu_btn, 150, 50); lv_obj_align(menu_btn, LV_ALIGN_CENTER, 0, 60); lv_obj_set_style_bg_color(menu_btn, HIGHLIGHT_COLOR, 0); lv_obj_t *btn_label = lv_label_create(menu_btn); lv_label_set_text(btn_label, "返回主菜单"); lv_obj_center(btn_label); lv_obj_add_event_cb(menu_btn, menu_btn_cb, LV_EVENT_CLICKED, NULL); } } // 键盘输入回调 static void game_input_cb(lv_event_t *e) { lv_event_code_t code = lv_event_get_code(e); if (code == LV_EVENT_KEY) { uint32_t key = lv_event_get_key(e); // 防止180度转向 if (key == LV_KEY_UP && game.direction != 1) game.direction = 0; else if (key == LV_KEY_DOWN && game.direction != 0) game.direction = 1; else if (key == LV_KEY_RIGHT && game.direction != 3) game.direction = 2; else if (key == LV_KEY_LEFT && game.direction != 2) game.direction = 3; } } // 创建登录界面 void create_login_screen() { login_scr = lv_obj_create(NULL); lv_obj_set_style_bg_color(login_scr, PRIMARY_COLOR, 0); lv_obj_set_style_pad_all(login_scr, 20, 0); // 标题 lv_obj_t *title = lv_label_create(login_scr); lv_label_set_text(title, "贪吃蛇游戏"); lv_obj_set_style_text_font(title, &lv_font_montserrat_36, 0); lv_obj_set_style_text_color(title, HIGHLIGHT_COLOR, 0); lv_obj_align(title, LV_ALIGN_TOP_MID, 0, 30); // 用户名标签 lv_obj_t *user_label = lv_label_create(login_scr); lv_label_set_text(user_label, "用户名:"); lv_obj_set_style_text_color(user_label, TEXT_COLOR, 0); lv_obj_align(user_label, LV_ALIGN_TOP_MID, -80, 100); // 用户名输入框 lv_obj_t *user_ta = lv_textarea_create(login_scr); lv_obj_set_size(user_ta, 200, 40); lv_obj_align(user_ta, LV_ALIGN_TOP_MID, 40, 100); lv_textarea_set_placeholder_text(user_ta, "输入用户名"); lv_obj_set_style_bg_color(user_ta, SECONDARY_COLOR, 0); // 密码标签 lv_obj_t *pass_label = lv_label_create(login_scr); lv_label_set_text(pass_label, "密码:"); lv_obj_set_style_text_color(pass_label, TEXT_COLOR, 0); lv_obj_align(pass_label, LV_ALIGN_TOP_MID, -80, 160); // 密码输入框 lv_obj_t *pass_ta = lv_textarea_create(login_scr); lv_obj_set_size(pass_ta, 200, 40); lv_obj_align(pass_ta, LV_ALIGN_TOP_MID, 40, 160); lv_textarea_set_placeholder_text(pass_ta, "输入密码"); lv_textarea_set_password_mode(pass_ta, true); lv_obj_set_style_bg_color(pass_ta, SECONDARY_COLOR, 0); // 登录按钮 lv_obj_t *login_btn = lv_btn_create(login_scr); lv_obj_set_size(login_btn, 180, 50); lv_obj_align(login_btn, LV_ALIGN_TOP_MID, 0, 230); lv_obj_set_style_bg_color(login_btn, HIGHLIGHT_COLOR, 0); lv_obj_t *login_label = lv_label_create(login_btn); lv_label_set_text(login_label, "登录"); lv_obj_center(login_label); lv_obj_add_event_cb(login_btn, login_btn_cb, LV_EVENT_CLICKED, NULL); // 注册按钮 lv_obj_t *register_btn = lv_btn_create(login_scr); lv_obj_set_size(register_btn, 180, 40); lv_obj_align(register_btn, LV_ALIGN_TOP_MID, 0, 290); lv_obj_set_style_bg_color(register_btn, ACCENT_COLOR, 0); lv_obj_t *register_label = lv_label_create(register_btn); lv_label_set_text(register_label, "没有账号? 注册"); lv_obj_center(register_label); lv_obj_add_event_cb(register_btn, register_btn_handler, LV_EVENT_CLICKED, NULL); } // 创建注册界面 void create_register_screen() { register_scr = lv_obj_create(NULL); lv_obj_set_style_bg_color(register_scr, PRIMARY_COLOR, 0); lv_obj_set_style_pad_all(register_scr, 20, 0); // 标题 lv_obj_t *title = lv_label_create(register_scr); lv_label_set_text(title, "注册新账号"); lv_obj_set_style_text_font(title, &lv_font_montserrat_28, 0); lv_obj_set_style_text_color(title, HIGHLIGHT_COLOR, 0); lv_obj_align(title, LV_ALIGN_TOP_MID, 0, 30); // 用户名标签 lv_obj_t *user_label = lv_label_create(register_scr); lv_label_set_text(user_label, "用户名:"); lv_obj_set_style_text_color(user_label, TEXT_COLOR, 0); lv_obj_align(user_label, LV_ALIGN_TOP_MID, -80, 100); // 用户名输入框 lv_obj_t *user_ta = lv_textarea_create(register_scr); lv_obj_set_size(user_ta, 200, 40); lv_obj_align(user_ta, LV_ALIGN_TOP_MID, 40, 100); lv_textarea_set_placeholder_text(user_ta, "输入用户名"); lv_obj_set_style_bg_color(user_ta, SECONDARY_COLOR, 0); // 密码标签 lv_obj_t *pass_label = lv_label_create(register_scr); lv_label_set_text(pass_label, "密码:"); lv_obj_set_style_text_color(pass_label, TEXT_COLOR, 0); lv_obj_align(pass_label, LV_ALIGN_TOP_MID, -80, 160); // 密码输入框 lv_obj_t *pass_ta = lv_textarea_create(register_scr); lv_obj_set_size(pass_ta, 200, 40); lv_obj_align(pass_ta, LV_ALIGN_TOP_MID, 40, 160); lv_textarea_set_placeholder_text(pass_ta, "输入密码"); lv_textarea_set_password_mode(pass_ta, true); lv_obj_set_style_bg_color(pass_ta, SECONDARY_COLOR, 0); // 确认密码标签 lv_obj_t *confirm_label = lv_label_create(register_scr); lv_label_set_text(confirm_label, "确认密码:"); lv_obj_set_style_text_color(confirm_label, TEXT_COLOR, 0); lv_obj_align(confirm_label, LV_ALIGN_TOP_MID, -80, 220); // 确认密码输入框 lv_obj_t *confirm_ta = lv_textarea_create(register_scr); lv_obj_set_size(confirm_ta, 200, 40); lv_obj_align(confirm_ta, LV_ALIGN_TOP_MID, 40, 220); lv_textarea_set_placeholder_text(confirm_ta, "再次输入密码"); lv_textarea_set_password_mode(confirm_ta, true); lv_obj_set_style_bg_color(confirm_ta, SECONDARY_COLOR, 0); // 注册按钮 lv_obj_t *register_btn = lv_btn_create(register_scr); lv_obj_set_size(register_btn, 180, 50); lv_obj_align(register_btn, LV_ALIGN_TOP_MID, 0, 290); lv_obj_set_style_bg_color(register_btn, HIGHLIGHT_COLOR, 0); lv_obj_t *register_label = lv_label_create(register_btn); lv_label_set_text(register_label, "注册"); lv_obj_center(register_label); lv_obj_add_event_cb(register_btn, register_btn_cb, LV_EVENT_CLICKED, NULL); // 返回登录按钮 lv_obj_t *back_btn = lv_btn_create(register_scr); lv_obj_set_size(back_btn, 180, 40); lv_obj_align(back_btn, LV_ALIGN_TOP_MID, 0, 350); lv_obj_set_style_bg_color(back_btn, ACCENT_COLOR, 0); lv_obj_t *back_label = lv_label_create(back_btn); lv_label_set_text(back_label, "返回登录"); lv_obj_center(back_label); lv_obj_add_event_cb(back_btn, back_to_login_cb, LV_EVENT_CLICKED, NULL); } // 创建主菜单 void create_main_menu() { main_menu_scr = lv_obj_create(NULL); lv_obj_set_style_bg_color(main_menu_scr, PRIMARY_COLOR, 0); // 欢迎标题 lv_obj_t *welcome_label = lv_label_create(main_menu_scr); lv_label_set_text_fmt(welcome_label, "欢迎, %s!", current_user.username); lv_obj_set_style_text_font(welcome_label, &lv_font_montserrat_24, 0); lv_obj_set_style_text_color(welcome_label, TEXT_COLOR, 0); lv_obj_align(welcome_label, LV_ALIGN_TOP_MID, 0, 30); // 最高分 lv_obj_t *score_label = lv_label_create(main_menu_scr); lv_label_set_text_fmt(score_label, "最高分: %d", current_user.high_score); lv_obj_set_style_text_color(score_label, HIGHLIGHT_COLOR, 0); lv_obj_align(score_label, LV_ALIGN_TOP_MID, 0, 70); // 开始游戏按钮 lv_obj_t *play_btn = lv_btn_create(main_menu_scr); lv_obj_set_size(play_btn, 220, 60); lv_obj_align(play_btn, LV_ALIGN_CENTER, 0, -50); lv_obj_set_style_bg_color(play_btn, HIGHLIGHT_COLOR, 0); lv_obj_t *play_label = lv_label_create(play_btn); lv_label_set_text(play_label, "开始游戏"); lv_obj_center(play_label); lv_obj_set_style_text_font(play_label, &lv_font_montserrat_24, 0); lv_obj_add_event_cb(play_btn, play_game_cb, LV_EVENT_CLICKED, NULL); // 排行榜按钮 lv_obj_t *scoreboard_btn = lv_btn_create(main_menu_scr); lv_obj_set_size(scoreboard_btn, 220, 50); lv_obj_align(scoreboard_btn, LV_ALIGN_CENTER, 0, 30); lv_obj_set_style_bg_color(scoreboard_btn, ACCENT_COLOR, 0); lv_obj_t *scoreboard_label = lv_label_create(scoreboard_btn); lv_label_set_text(scoreboard_label, "排行榜"); lv_obj_center(scoreboard_label); lv_obj_add_event_cb(scoreboard_btn, show_scoreboard_cb, LV_EVENT_CLICKED, NULL); // 退出按钮 lv_obj_t *exit_btn = lv_btn_create(main_menu_scr); lv_obj_set_size(exit_btn, 220, 50); lv_obj_align(exit_btn, LV_ALIGN_CENTER, 0, 100); lv_obj_set_style_bg_color(exit_btn, ACCENT_COLOR, 0); lv_obj_t *exit_label = lv_label_create(exit_btn); lv_label_set_text(exit_label, "退出登录"); lv_obj_center(exit_label); lv_obj_add_event_cb(exit_btn, logout_cb, LV_EVENT_CLICKED, NULL); } // 创建游戏界面 void create_game_screen() { game_scr = lv_obj_create(NULL); lv_obj_set_style_bg_color(game_scr, PRIMARY_COLOR, 0); // 分数显示 score_label_game = lv_label_create(game_scr); // 使用全局变量 lv_label_set_text(score_label_game, "分数: 0"); // 修复：全部使用 score_label_game lv_obj_set_style_text_font(score_label_game, &lv_font_montserrat_20, 0); lv_obj_set_style_text_color(score_label_game, TEXT_COLOR, 0); lv_obj_align(score_label_game, LV_ALIGN_TOP_LEFT, 10, 10); // 游戏区域容器 game_container = lv_obj_create(game_scr); // 赋值给全局变量 lv_obj_set_size(game_container, 300, 300); lv_obj_align(game_container, LV_ALIGN_CENTER, 0, 0); lv_obj_set_style_bg_color(game_container, PRIMARY_COLOR, 0); lv_obj_set_style_border_width(game_container, 0, 0); // 键盘输入支持 lv_obj_add_flag(game_container, LV_OBJ_FLAG_CLICKABLE); lv_obj_add_flag(game_container, LV_OBJ_FLAG_SCROLLABLE); lv_obj_add_event_cb(game_container, game_input_cb, LV_EVENT_KEY, NULL); lv_group_t *group = lv_group_create(); lv_group_add_obj(group, game_container); lv_group_focus_obj(game_container); } // 创建排行榜界面 void create_scoreboard_screen() { scoreboard_scr = lv_obj_create(NULL); lv_obj_set_style_bg_color(scoreboard_scr, PRIMARY_COLOR, 0); // 标题 lv_obj_t *title = lv_label_create(scoreboard_scr); lv_label_set_text(title, "玩家排行榜"); lv_obj_set_style_text_font(title, &lv_font_montserrat_28, 0); lv_obj_set_style_text_color(title, HIGHLIGHT_COLOR, 0); lv_obj_align(title, LV_ALIGN_TOP_MID, 0, 20); // 排行榜容器 lv_obj_t *container = lv_obj_create(scoreboard_scr); lv_obj_set_size(container, 300, 350); lv_obj_align(container, LV_ALIGN_CENTER, 0, 20); lv_obj_set_style_bg_color(container, SECONDARY_COLOR, 0); lv_obj_set_style_border_width(container, 0, 0); lv_obj_set_flex_flow(container, LV_FLEX_FLOW_COLUMN); lv_obj_set_flex_align(container, LV_FLEX_ALIGN_START, LV_FLEX_ALIGN_CENTER, LV_FLEX_ALIGN_CENTER); // 表头 lv_obj_t *header = lv_obj_create(container); lv_obj_set_size(header, lv_pct(100), 40); lv_obj_set_style_bg_color(header, ACCENT_COLOR, 0); lv_obj_set_style_border_width(header, 0, 0); lv_obj_set_flex_flow(header, LV_FLEX_FLOW_ROW); lv_obj_t *rank_label = lv_label_create(header); lv_label_set_text(rank_label, "排名"); lv_obj_set_style_text_font(rank_label, &lv_font_montserrat_18, 0); lv_obj_set_width(rank_label, 60); lv_obj_set_style_pad_left(rank_label, 10, 0); lv_obj_t *name_label = lv_label_create(header); lv_label_set_text(name_label, "玩家"); lv_obj_set_style_text_font(name_label, &lv_font_montserrat_18, 0); lv_obj_set_width(name_label, 150); lv_obj_t *score_label = lv_label_create(header); lv_label_set_text(score_label, "最高分"); lv_obj_set_style_text_font(score_label, &lv_font_montserrat_18, 0); lv_obj_set_width(score_label, 80); // 添加玩家分数 for (int i = 0; i < user_count && i < 5; i++) { lv_obj_t *row = lv_obj_create(container); lv_obj_set_size(row, lv_pct(100), 50); lv_obj_set_style_border_width(row, 0, 0); lv_obj_set_flex_flow(row, LV_FLEX_FLOW_ROW); lv_obj_t *rank = lv_label_create(row); lv_label_set_text_fmt(rank, "%d", i+1); lv_obj_set_style_text_font(rank, &lv_font_montserrat_18, 0); lv_obj_set_width(rank, 60); lv_obj_set_style_pad_left(rank, 10, 0); lv_obj_t *name = lv_label_create(row); lv_label_set_text(name, users[i].username); lv_obj_set_style_text_font(name, &lv_font_montserrat_18, 0); lv_obj_set_width(name, 150); lv_obj_t *score = lv_label_create(row); lv_label_set_text_fmt(score, "%d", users[i].high_score); lv_obj_set_style_text_font(score, &lv_font_montserrat_18, 0); lv_obj_set_width(score, 80); // 高亮当前用户 if (strcmp(users[i].username, current_user.username) == 0) { lv_obj_set_style_bg_color(row, lv_color_hex(0x4a5568), 0); } } // 返回按钮 lv_obj_t *back_btn = lv_btn_create(scoreboard_scr); lv_obj_set_size(back_btn, 150, 50); lv_obj_align(back_btn, LV_ALIGN_BOTTOM_MID, 0, -20); lv_obj_set_style_bg_color(back_btn, HIGHLIGHT_COLOR, 0); lv_obj_t *back_label = lv_label_create(back_btn); lv_label_set_text(back_label, "返回"); lv_obj_center(back_label); lv_obj_add_event_cb(back_btn, back_to_menu_cb, LV_EVENT_CLICKED, NULL); } // 主函数 int main(void) { // 初始化LVGL lv_init(); // 初始化显示驱动和输入设备 // (根据GEC6818开发板具体实现) // 加载用户数据 load_users(); // 创建各个界面 create_login_screen(); create_register_screen(); create_main_menu(); create_game_screen(); create_scoreboard_screen(); // 设置初始屏幕 lv_disp_load_scr(login_scr); // 主循环 while (1) { lv_timer_handler(); usleep(5000); } return 0; }
06-18
具体来说，当游戏结束，定时器被删除（在`game_timer_cb`中调用了`lv_timer_del(game_timer)`），所以问题不是定时器在后台运行。但是，在游戏结束之前，定时器回调会一直运行。然而，当用户点击返回主菜单按钮后，...
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