482 lines
11 KiB
C
482 lines
11 KiB
C
//阅读器应用
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#include "stdio.h"
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#include "sys.h"
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#include "systick.h"
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#include "key.h"
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#include "lcd.h"
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#include "GameEngine.h"
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#include "SD.h"
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#include "APP_Reader.h"
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/**************************************** 私有定义 ****************************************/
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typedef struct
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{
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FSIZE_t page_ptr;
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uint32_t page_size;
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} Page; //页结构定义
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typedef struct
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{
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uint8_t font_size;
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uint32_t page_num;
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uint32_t page_amount;
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} Save; //存档结构定义
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/*****************************************************************************************/
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/**************************************** 全局变量 ****************************************/
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FIL file; //文件
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char filename[32]; //文件名
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char filepath[32]; //文件路径
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FIL page_file; //分页文件
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char page_filepath[32]; //分页文件名
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char page_filename[32]; //分页文件路径
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FIL save_file; //存档文件
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char save_filepath[32]; //存档文件名
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char save_filename[32]; //存档文件路径
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uint32_t page_amount = 1; //页数
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uint8_t current_font_size = FONT_24; //当前字体设置
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uint32_t current_page = 1; //当前页码
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/*****************************************************************************************/
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/**************************************** 私有函数 ****************************************/
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uint8_t APP_Reader_ReadPage(uint8_t font_size, uint32_t page_num);
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uint8_t APP_Reader_SplitPages(uint8_t font_size);
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uint8_t APP_Reader_Menu(void);
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uint8_t APP_Reader_SaveWrite(void);
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uint8_t APP_Reader_SaveRead(void);
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void APP_Reader_Msg(uint8_t *head, uint8_t *content);
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void APP_Reader_Msg_NoBlock(uint8_t *head, uint8_t *content);
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/*****************************************************************************************/
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/**
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* @brief 启动阅读器
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*/
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void APP_Reader_Launcher(void)
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{
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//GUI 选取文件
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uint8_t ret;
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if ((ret = SD_SelectFile(filename, "txt")) != SD_OK)
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{
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if (ret == SD_ERROR)
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APP_Reader_Msg("警告", "选取文件出错！\n\n请按任意键返回");
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return;
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}
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SD_GetPath(filepath, filename);
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//打开文件
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if (f_open(&file, filepath, FA_OPEN_EXISTING | FA_READ) != FR_OK)
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{
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APP_Reader_Msg("警告", "打开文件出错！\n\n请按任意键返回");
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return;
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}
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//读存档
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uint8_t is_saved = 0;
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if (APP_Reader_SaveRead() == 0)
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is_saved = 1;
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uint32_t save_page_amount = page_amount;
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//分页
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if (APP_Reader_SplitPages(current_font_size) != 0)
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{
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APP_Reader_Msg("警告", "分页出错！\n\n请按任意键返回");
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return;
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}
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if (is_saved == 0 || save_page_amount != page_amount)
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current_page = 1;
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//开始阅读
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f_open(&page_file, page_filepath, FA_OPEN_EXISTING | FA_READ); //打开分页文件
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while (1)
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{
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GE_Draw_ClrAll(WHITE);
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if (APP_Reader_ReadPage(current_font_size, current_page) != 0)
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{
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GE_Draw_ClrAll(WHITE);
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APP_Reader_Msg("警告", "发生错误！\n\n请按任意键返回");
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return;
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}
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switch (KEY_GetKeyWait())
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{
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case JOY_L_UP: //设置菜单
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{
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if (APP_Reader_Menu() != 0)
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return;
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}
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break;
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case JOY_D_DOWN: //向后翻页
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{
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if (current_page == page_amount)
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APP_Reader_Msg("提示", "已到最后一页！");
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else
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current_page++;
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}
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break;
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case JOY_U_DOWN: //向前翻页
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{
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if (current_page == 1)
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APP_Reader_Msg("提示", "已到第一页！");
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else
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current_page--;
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}
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}
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}
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}
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/**
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* @brief 显示某一页
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* @param font_size: 字体大小
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* @param page_num: 页码，从 1 开始
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* @retval 成功返回 0，失败返回 1
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*/
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uint8_t APP_Reader_ReadPage(uint8_t font_size, uint32_t page_num)
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{
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FRESULT f_res;
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uint32_t br;
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uint32_t page_br;
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Page page;
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//读分页信息
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f_res = f_lseek(&page_file, (page_num - 1) * sizeof(Page));
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f_res = f_read(&page_file, &page, sizeof(Page), &page_br);
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//读取文件
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uint8_t buffer[1500];
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f_res = f_lseek(&file, page.page_ptr);
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f_res = f_read(&file, buffer, page.page_size, &br);
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if (f_res != FR_OK)
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return 1;
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*((uint8_t *)buffer + page.page_size) = '\0';
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GE_Font_Print(0, 0, BORDER_MAX, BORDER_MAX, font_size, BLACK, WHITE, TRUE, buffer);
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GE_Font_Print(
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1,
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223,
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BORDER_MAX,
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BORDER_MAX,
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FONT_16,
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BLUE,
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WHITE,
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TRUE,
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"页数:%d/%d %.1f%%",
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page_num,
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page_amount,
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(float)page_num / (float)page_amount * 100.0);
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GE_Draw_Disp();
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return 0;
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}
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/**
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* @brief 对文本文件分页
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* @param font_size: 字体大小
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* @retval 成功返回 0，失败返回 1
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*/
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uint8_t APP_Reader_SplitPages(uint8_t font_size)
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{
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APP_Reader_Msg_NoBlock("提示", "正在分页中...\n\n请稍等");
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uint32_t br;
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FRESULT f_res;
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char ch;
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uint8_t x, y;
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Page page;
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FSIZE_t fptr = 0;
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uint32_t page_bw;
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uint8_t x_max, y_max;
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if (font_size == FONT_16)
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{
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x_max = 40;
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y_max = 13;
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}
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else
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{
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x_max = 26;
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y_max = 9;
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}
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strcpy(page_filename, filename);
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strcat(page_filename, ".page");
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SD_GetPath(page_filepath, page_filename);
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f_res = f_open(&page_file, page_filepath, FA_CREATE_ALWAYS | FA_WRITE);
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page_amount = 1;
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f_lseek(&file, 0);
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page.page_size = 0;
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while (1)
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{
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x = 0;
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y = 0;
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while (1)
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{
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if (f_res != FR_OK)
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return 1;
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f_res = f_read(&file, &ch, 1, &br); //读一个字符
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page.page_size++;
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if (br == 0) //分页完毕
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{
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page.page_ptr = fptr;
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f_res = f_write(&page_file, &page, sizeof(Page), &page_bw);
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f_res = f_close(&page_file);
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if (f_res != FR_OK)
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return 1;
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else
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return 0;
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}
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if (ch <= 0x80) //ASCII 字符
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{
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if (ch == '\r' || ch == '\0') //忽略的字符
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continue;
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if ((x + 1 > x_max) || (ch == '\n'))
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{
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x = 0;
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y++;
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if (y + 1 > y_max)
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{
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if (ch != '\n')
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f_res = f_lseek(&file, file.fptr - 1);
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page.page_size--;
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break;
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}
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}
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if (ch != '\n')
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x++;
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}
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else //GBK 字符
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{
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f_res = f_lseek(&file, file.fptr + 1);
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page.page_size++;
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if (x + 2 > x_max)
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{
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x = 0;
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y++;
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if (y + 1 > y_max)
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{
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f_res = f_lseek(&file, file.fptr - 2);
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page.page_size -= 2;
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break;
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}
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}
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x += 2;
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}
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}
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page_amount++; //页数增加
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page.page_ptr = fptr; //本页起始指针
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f_res = f_write(&page_file, &page, sizeof(Page), &page_bw); //写入分页文件
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page.page_size = 0; //页大小归零
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fptr = file.fptr; //下页起始指针
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}
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}
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/**
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* @brief 设置菜单
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* @retval 返回阅读器返回 0，结束阅读返回 1
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*/
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uint8_t APP_Reader_Menu(void)
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{
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uint8_t content[3][GE_GUI_MENUBOX_CONTENT_LEN] = {"字体设置", "退出阅读器", "返回"};
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GE_Draw_Fill(50, 50, 220, 140, WHITE);
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switch (GE_GUI_MenuBox(50, 50, 220, 140, "菜单", 3, content, NULL))
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{
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case 0: //返回
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{
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KEY_ClearKey();
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}
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break;
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case 1: //字体设置
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{
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GE_Draw_Fill(50, 50, 220, 140, WHITE);
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uint8_t content[2][GE_GUI_MENUBOX_CONTENT_LEN] = {"大号字体", "小号字体"};
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if (GE_GUI_MenuBox(50, 50, 220, 140, "字体设置", 2, content, NULL) == 1)
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{
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if (current_font_size == FONT_24)
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{
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APP_Reader_Msg("提示", "您正在使用大号字体！");
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current_page--;
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}
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else
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{
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float read_pos = (float)current_page / (float)page_amount;
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current_font_size = FONT_24;
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f_close(&page_file);
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APP_Reader_SplitPages(current_font_size);
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f_open(&page_file, page_filepath, FA_OPEN_EXISTING | FA_READ);
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current_page = (float)page_amount * read_pos;
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}
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}
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else
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{
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if (current_font_size == FONT_16)
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{
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APP_Reader_Msg("提示", "您正在使用小号字体！");
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current_page--;
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}
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else
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{
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float read_pos = (float)current_page / (float)page_amount;
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current_font_size = FONT_16;
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f_close(&page_file);
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APP_Reader_SplitPages(current_font_size);
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f_open(&page_file, page_filepath, FA_OPEN_EXISTING | FA_READ);
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current_page = (float)page_amount * read_pos;
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}
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}
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}
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break;
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case 2: //退出
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{
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//关闭文件
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f_close(&page_file);
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f_close(&file);
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APP_Reader_SaveWrite();
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return 1;
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}
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break;
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case 3: //返回
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{
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}
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}
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return 0;
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}
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/**
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* @brief 读存档
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* @retval 有存档返回 0，无存档返回 1
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*/
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uint8_t APP_Reader_SaveRead(void)
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{
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uint32_t save_br;
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Save save;
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strcpy(save_filename, filename);
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strcat(save_filename, ".save");
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SD_GetPath(save_filepath, save_filename);
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if (f_open(&save_file, save_filepath, FA_OPEN_EXISTING | FA_READ) != FR_OK ||
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f_read(&save_file, &save, sizeof(Save), &save_br) != FR_OK)
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{
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f_close(&save_file);
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return 1;
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}
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f_close(&save_file);
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if (save.font_size == FONT_16)
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current_font_size = FONT_16;
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else if (save.font_size == FONT_24)
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current_font_size = FONT_24;
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else
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return 1;
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current_page = save.page_num;
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page_amount = save.page_amount;
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return 0;
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}
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/**
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* @brief 写存档
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* @retval 成功返回 0，失败返回 1
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*/
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uint8_t APP_Reader_SaveWrite(void)
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{
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uint32_t save_bw;
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Save save;
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save.font_size = current_font_size;
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save.page_num = current_page;
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save.page_amount = page_amount;
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strcpy(save_filename, filename);
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strcat(save_filename, ".save");
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SD_GetPath(save_filepath, save_filename);
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f_open(&save_file, save_filepath, FA_CREATE_ALWAYS | FA_WRITE);
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f_write(&save_file, &save, sizeof(Save), &save_bw);
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f_close(&save_file);
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return 0;
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}
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/**
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* @brief 消息框，任意键按下后退出
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* @param head: 标题
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* @param content: 内容
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*/
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void APP_Reader_Msg(uint8_t *head, uint8_t *content)
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{
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GE_Draw_Fill(60, 75, 200, 90, WHITE);
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GE_GUI_MsgBox(60, 75, 200, 90, head, content, NULL);
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KEY_WaitKey(JOY_L);
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}
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/**
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* @brief 消息框，任意键按下后退出
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* @param head: 标题
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* @param content: 内容
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*/
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void APP_Reader_Msg_NoBlock(uint8_t *head, uint8_t *content)
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{
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GE_Draw_Fill(60, 75, 200, 90, WHITE);
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GE_GUI_MsgBox(60, 75, 200, 90, head, content, NULL);
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}
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