量产工具一一业务系统（六）

前言

一、代码流程框架

1.业务系统程序流程图

2.业务系统主页面流程图

3.main.c

4.main_page.c

二、处理配置文件

1.配置文件示例

2.处理配置文件

3.config.h

4.config.c

三、生成产品界面

1.计算每个按钮的范围

2.main_page.c

四、处理输入事件

1.main_page.c

五、上机测试

六、改进代码

1.common.h

2.freetype.c

3.disp_manager.c

4.main_page.c

5.上机测试

前言

前面我们实现了显示系统框架，输入系统框架，文字系统框架，UI系统框架和页面系统框架，链接：

量产工具一一显示系统（一）-CSDN博客
量产工具一一输入系统（二）-CSDN博客
量产工具一一文字系统（三）-CSDN博客
量产工具一一UI系统（四）-CSDN博客
量产工具一一页面系统（五）-CSDN博客

接下来我们来实现业务系统框架，也就是把前面所实现的系统框架全部整合到一起实现功能。

一、代码流程框架

1.业务系统程序流程图

2.业务系统主页面流程图

3.main.c

#include <sys/mman.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <unistd.h>
#include <linux/fb.h>
#include <fcntl.h>
#include <stdio.h>
#include <string.h>
#include <sys/ioctl.h>
#include <stdlib.h>#include <disp_manager.h>
#include <font_manager.h>
#include <input_manager.h>
#include <page_manager.h>int main(int argc, char **argv)
{int error;if (argc != 2){printf("Usage: %s <font_file>\n", argv[0]);return -1;}/* 初始化显示系统 */		DisplaySystemRegister(); SelectDefaultDisplay("fb");InitDefaultDisplay();/* 初始化输入系统 */		InputSystemRegister(); InputDeviceInit();/* 初始化文字系统 */		FontSystemRegister(); error = SelectAndInitFont("freetype", argv[1]);if (error){printf("SelectAndInitFont err\n");return -1;}/* 初始化页面系统 */		PageSystemRegister(); /* 运行业务系统的主页面 */Page("main")->Run(NULL);return 0;	
}

4.main_page.c

在主页面流程函数下我们需要：

1.读取配置文件
2.根据配置文件生成按钮和界面
3.在while循环里读取输入事件
4.根据输入时间找到对应按钮
5.找到后调用出发按钮函数

static void MainPageRun(void *pParams)
{int error;InputEvent tInputEvent;PButton ptButton;PDispBuff ptDispBuff = GetDisplayBuffer();/* 读取配置文件 */error = ParseConfigFile();if (error)return ;/* 根据配置文件生成按钮、界面 */GenerateButtons();while (1){/* 读取输入事件 */error = GetInputEvent(&tInputEvent);if (error)continue;/* 根据输入事件找到按钮 */ptButton = GetButtonByInputEvent(&tInputEvent);if (!ptButton)continue;/* 调用按钮的OnPressed函数 */ptButton->OnPressed(ptButton, ptDispBuff, &tInputEvent);}
}

在下面我们再一一实现上面所用到的函数。

二、处理配置文件

对于我们要制作的页面，里面有很多按钮，那么我们怎么知道每个按钮里面都存放着什么呢？

这时我们就需要配置文件，以后我们想要打开哪个按钮，调整测试模块时，可以直接修改配置文件即可，就不需要重新修改，编译程序就可以带来非常大的灵活性。

1.配置文件示例

2.处理配置文件

创建一个ItemCfg 结构体，用于表示配置文件中的一个条目，以便于处理配置文件

3.config.h

#ifndef _CONFIG_H
#define _CONFIG_H#include <common.h>#define ITEMCFG_MAX_NUM 30
#define CFG_FILE  "/etc/test_gui/gui.conf"typedef struct ItemCfg {int index;char name[100];int bCanBeTouched;char command[100];
}ItemCfg, *PItemCfg;int ParseConfigFile(void);
int GetItemCfgCount(void);
PItemCfg GetItemCfgByIndex(int index);
PItemCfg GetItemCfgByName(char *name);#endif

4.config.c

处理配置文件主要分为下面几个步骤

1.打开配置文件
2.循环读取文件中每一行
3.读取每一行数据
4.吃掉开头的空格或者TAB
5.忽略注释
6.处理数据

#include <config.h>
#include <stdio.h>
#include <string.h>static ItemCfg g_tItemCfgs[ITEMCFG_MAX_NUM];
static int g_iItemCfgCount = 0;int ParseConfigFile(void)
{FILE *fp;char buf[100];char *p = buf;/* 1. 打开配置文件 */fp = fopen(CFG_FILE, "r");if (!fp){printf("can not open cfg file %s\n", CFG_FILE);return -1;}/* 循环读取文件的每一行 */while (fgets(buf, 100, fp)) {/* 2.1 读取每一行数据 */buf[99] = '\0';		/* 2.2 吃掉开头的空格或TAB */p = buf;while (*p == ' ' || *p =='\t')p++;/* 2.3 忽略注释 */if (*p == '#')continue;/* 2.4 处理 */g_tItemCfgs[g_iItemCfgCount].command[0] = '\0';g_tItemCfgs[g_iItemCfgCount].index = g_iItemCfgCount;sscanf(p, "%s %d %s", g_tItemCfgs[g_iItemCfgCount].name, &g_tItemCfgs[g_iItemCfgCount].bCanBeTouched, \g_tItemCfgs[g_iItemCfgCount].command);g_iItemCfgCount++;		}return 0;
}/* 定义一个函数，用于获取配置文件中条目的数量 */
int GetItemCfgCount(void)
{return g_iItemCfgCount;
}/* 定义一个函数，用于根据索引获取配置文件中的条目 */
PItemCfg GetItemCfgByIndex(int index)
{if (index < g_iItemCfgCount)return &g_tItemCfgs[index];elsereturn NULL;
}/* 定义一个函数，用于根据名称获取配置文件中的条目 */
PItemCfg GetItemCfgByName(char *name)
{int i;for (i = 0; i < g_iItemCfgCount; i++){if (strcmp(name, g_tItemCfgs[i].name) == 0)return &g_tItemCfgs[i];}return NULL;
}

三、生成产品界面

想要显示如下界面，我们可以通过上面配置文件知道有哪些按钮，接下来我们需要确定每个按钮的大小和位置，需要计算出来。

1.计算每个按钮的范围

2.main_page.c

#include <config.h>
#include <stdio.h>
#include <ui.h>
#include <page_manager.h>
#include <math.h>
#include <string.h>#define X_GAP 5
#define Y_GAP 5static Button g_tButtons[ITEMCFG_MAX_NUM];static void GenerateButtons(void)
{int width, height;int n_per_line;int row, rows;int col;int n;PDispBuff pDispBuff;int xres, yres;int start_x, start_y;int pre_start_x, pre_start_y;PButton pButton;int i = 0;/* 算出单个按钮的width/height */g_tButtonCnt = n = GetItemCfgCount();pDispBuff = GetDisplayBuffer();xres = pDispBuff->iXres;yres = pDispBuff->iYres;width = sqrt(1.0/0.618 *xres * yres / n);n_per_line = xres / width + 1;width  = xres / n_per_line;height = 0.618 * width;	/* 居中显示:  计算每个按钮的region  */start_x = (xres - width * n_per_line) / 2;rows    = n / n_per_line;if (rows * n_per_line < n)rows++;start_y = (yres - rows*height)/2;/* 计算每个按钮的region */for (row = 0; (row < rows) && (i < n); row++){pre_start_y = start_y + row * height;pre_start_x = start_x - width;for (col = 0; (col < n_per_line) && (i < n); col++){pButton = &g_tButtons[i];pButton->tRegion.iLeftUpX = pre_start_x + width;pButton->tRegion.iLeftUpY = pre_start_y;pButton->tRegion.iWidth   = width - X_GAP;pButton->tRegion.iHeigh   = height - Y_GAP;pre_start_x = pButton->tRegion.iLeftUpX;/* InitButton */InitButton(pButton, GetItemCfgByIndex(i)->name, NULL, NULL, MainPageOnPressed);i++;}}/* OnDraw */for (i = 0; i < n; i++)g_tButtons[i].OnDraw(&g_tButtons[i], pDispBuff);
}

四、处理输入事件

我们得到的输入事件，可能来自触摸屏，也可能是其他APP发来的网络数据

对于触摸屏事件，根据iX、iY找到按钮

对于网络数据，我们限定为这样的格式：

“name ok”、“name err”、“name 70%”
根据name找到按钮

对于按钮，我们要提供自己的OnPressed函数，不适用UI系统默认的函数

1.main_page.c

#include <config.h>
#include <stdio.h>
#include <ui.h>
#include <page_manager.h>
#include <math.h>
#include <string.h>#define X_GAP 5
#define Y_GAP 5static Button g_tButtons[ITEMCFG_MAX_NUM];
static int g_tButtonCnt;static int MainPageOnPressed(struct Button *ptButton, PDispBuff ptDispBuff, PInputEvent ptInputEvent)
{unsigned int dwColor = BUTTON_DEFAULT_COLOR;char name[100];char status[100];char *strButton;strButton = ptButton->name;/* 1. 对于触摸屏事件 */if (ptInputEvent->iType == INPUT_TYPE_TOUCH){/* 1.1 分辨能否被点击 */if (GetItemCfgByName(ptButton->name)->bCanBeTouched == 0)return -1;/* 1.2 修改颜色 */ptButton->status = !ptButton->status;if (ptButton->status)dwColor = BUTTON_PRESSED_COLOR;}else if (ptInputEvent->iType == INPUT_TYPE_NET){/* 2. 对于网络事件 *//* 根据传入的字符串修改颜色 : wifi ok, wifi err, burn 70 */sscanf(ptInputEvent->str, "%s %s", name, status);if (strcmp(status, "ok") == 0)dwColor = BUTTON_PRESSED_COLOR;else if (strcmp(status, "err") == 0)dwColor = BUTTON_DEFAULT_COLOR;else if (status[0] >= '0' && status[0] <= '9'){			dwColor = BUTTON_PERCENT_COLOR;strButton = status;			}elsereturn -1;}else{return -1;}/* 绘制底色 */DrawRegion(&ptButton->tRegion, dwColor);/* 居中写文字 */DrawTextInRegionCentral(strButton, &ptButton->tRegion, BUTTON_TEXT_COLOR);/* flush to lcd/web */FlushDisplayRegion(&ptButton->tRegion, ptDispBuff);return 0;
}static void GenerateButtons(void)
{int width, height;int n_per_line;int row, rows;int col;int n;PDispBuff pDispBuff;int xres, yres;int start_x, start_y;int pre_start_x, pre_start_y;PButton pButton;int i = 0;/* 算出单个按钮的width/height */g_tButtonCnt = n = GetItemCfgCount();pDispBuff = GetDisplayBuffer();xres = pDispBuff->iXres;yres = pDispBuff->iYres;width = sqrt(1.0/0.618 *xres * yres / n);n_per_line = xres / width + 1;width  = xres / n_per_line;height = 0.618 * width;	/* 居中显示:  计算每个按钮的region  */start_x = (xres - width * n_per_line) / 2;rows    = n / n_per_line;if (rows * n_per_line < n)rows++;start_y = (yres - rows*height)/2;/* 计算每个按钮的region */for (row = 0; (row < rows) && (i < n); row++){pre_start_y = start_y + row * height;pre_start_x = start_x - width;for (col = 0; (col < n_per_line) && (i < n); col++){pButton = &g_tButtons[i];pButton->tRegion.iLeftUpX = pre_start_x + width;pButton->tRegion.iLeftUpY = pre_start_y;pButton->tRegion.iWidth   = width - X_GAP;pButton->tRegion.iHeigh   = height - Y_GAP;pre_start_x = pButton->tRegion.iLeftUpX;/* InitButton */InitButton(pButton, GetItemCfgByIndex(i)->name, NULL, NULL, MainPageOnPressed);i++;}}/* OnDraw */for (i = 0; i < n; i++)g_tButtons[i].OnDraw(&g_tButtons[i], pDispBuff);
}static int isTouchPointInRegion(int iX, int iY, PRegion ptRegion)
{if (iX < ptRegion->iLeftUpX || iX >= ptRegion->iLeftUpX + ptRegion->iWidth)return 0;if (iY < ptRegion->iLeftUpY || iY >= ptRegion->iLeftUpY + ptRegion->iHeigh)return 0;return 1;
}static PButton GetButtonByName(char *name)
{int i;for (i = 0; i < g_tButtonCnt; i++){if (strcmp(name, g_tButtons[i].name) == 0)return &g_tButtons[i];}return NULL;
}static PButton GetButtonByInputEvent(PInputEvent ptInputEvent)
{int i;char name[100];if (ptInputEvent->iType == INPUT_TYPE_TOUCH){for (i = 0; i < g_tButtonCnt; i++){if (isTouchPointInRegion(ptInputEvent->iX, ptInputEvent->iY, &g_tButtons[i].tRegion))return &g_tButtons[i];}}else if (ptInputEvent->iType == INPUT_TYPE_NET){sscanf(ptInputEvent->str, "%s", name);return GetButtonByName(name);}else{return NULL;}return NULL;
}static void MainPageRun(void *pParams)
{int error;InputEvent tInputEvent;PButton ptButton;PDispBuff ptDispBuff = GetDisplayBuffer();/* 读取配置文件 */error = ParseConfigFile();if (error)return ;/* 根据配置文件生成按钮、界面 */GenerateButtons();while (1){/* 读取输入事件 */error = GetInputEvent(&tInputEvent);if (error)continue;/* 根据输入事件找到按钮 */ptButton = GetButtonByInputEvent(&tInputEvent);if (!ptButton)continue;/* 调用按钮的OnPressed函数 */ptButton->OnPressed(ptButton, ptDispBuff, &tInputEvent);}
}static PageAction g_tMainPage = {.name = "main",.Run  = MainPageRun,
};void MainPageRegister(void)
{PageRegister(&g_tMainPage);
}

五、上机测试

上电开发板，挂载 Ubuntu 的 NFS 目录，编译测试：

六、改进代码

在上面我们可以发现按钮文字大小不一，没有严格居中，太小看不清，要解决这个问题，我们可以根据配置文件的各项确定最长的名字，确定字符大小，从而让每个按钮中文字大小一样。

解决方法：

在 common.h 中新构造结构体描述笛卡尔取值范围。
在 freetype.c 文件中添加 FreetypeGetStringRegionCar 函数，在font_manager.h中进行函数声明。
在 disp_manager.c 文件的 DrawTextInRegionCentral 函数。
在 main_page.c 文件中添加 GetFontSizeForAllButton 函数，另外我们可以改进配置文件中的command，在 OnPressed 函数中，用system函数运行command。

1.common.h

#ifndef _COMMON_H
#define _COMMON_H#ifndef NULL
#define NULL (void *)0
#endiftypedef struct Region {int iLeftUpX;int iLeftUpY;int iWidth;int iHeigh;
}Region, *PRegion;typedef struct RegionCartesian {int iLeftUpX;int iLeftUpY;int iWidth;int iHeigh;
}RegionCartesian, *PRegionCartesian;#endif

2.freetype.c

static int FreetypeGetStringRegionCar(char *str, PRegionCartesian ptRegionCar)
{int i;int error;FT_BBox bbox;FT_BBox glyph_bbox;FT_Vector pen;FT_Glyph  glyph;FT_GlyphSlot slot = g_tFace->glyph;/* 初始化 */bbox.xMin = bbox.yMin = 32000;bbox.xMax = bbox.yMax = -32000;/* 指定原点为(0, 0) */pen.x = 0;pen.y = 0;/* 计算每个字符的bounding box *//* 先translate, 再load char, 就可以得到它的外框了 */for (i = 0; i < strlen(str); i++){/* 转换：transformation */FT_Set_Transform(g_tFace, 0, &pen);/* 加载位图: load glyph image into the slot (erase previous one) */error = FT_Load_Char(g_tFace, str[i], FT_LOAD_RENDER);if (error){printf("FT_Load_Char error\n");return -1;}/* 取出glyph */error = FT_Get_Glyph(g_tFace->glyph, &glyph);if (error){printf("FT_Get_Glyph error!\n");return -1;}/* 从glyph得到外框: bbox */FT_Glyph_Get_CBox(glyph, FT_GLYPH_BBOX_TRUNCATE, &glyph_bbox);/* 更新外框 */if ( glyph_bbox.xMin < bbox.xMin )bbox.xMin = glyph_bbox.xMin;if ( glyph_bbox.yMin < bbox.yMin )bbox.yMin = glyph_bbox.yMin;if ( glyph_bbox.xMax > bbox.xMax )bbox.xMax = glyph_bbox.xMax;if ( glyph_bbox.yMax > bbox.yMax )bbox.yMax = glyph_bbox.yMax;/* 计算下一个字符的原点: increment pen position */pen.x += slot->advance.x;pen.y += slot->advance.y;}/* return string bbox *///*abbox = bbox;ptRegionCar->iLeftUpX = bbox.xMin;ptRegionCar->iLeftUpY = bbox.yMax;ptRegionCar->iWidth     = bbox.xMax - bbox.xMin + 1;ptRegionCar->iHeigh     = bbox.yMax - bbox.yMin + 1;return 0;	
}

3.disp_manager.c

void DrawTextInRegionCentral(char *name, PRegion ptRegion, unsigned int dwColor)
{FontBitMap tFontBitMap;RegionCartesian tRegionCar;int iOriginX, iOriginY;int i = 0;int error;/* 计算字符串的外框 */GetStringRegionCar(name, &tRegionCar);/* 算出第一个字符的origin */iOriginX = ptRegion->iLeftUpX + (ptRegion->iWidth - tRegionCar.iWidth)/2 - tRegionCar.iLeftUpX;iOriginY = ptRegion->iLeftUpY + (ptRegion->iHeigh - tRegionCar.iHeigh)/2 + tRegionCar.iLeftUpY;/* 逐个绘制 */while (name[i]){/* get bitmap */tFontBitMap.iCurOriginX = iOriginX;tFontBitMap.iCurOriginY = iOriginY;error = GetFontBitMap(name[i], &tFontBitMap);if (error){printf("SelectAndInitFont err\n");return;}/* draw on buffer */		DrawFontBitMap(&tFontBitMap, dwColor);		iOriginX = tFontBitMap.iNextOriginX;iOriginY = tFontBitMap.iNextOriginY;	i++;}}

4.main_page.c

#include <config.h>
#include <stdio.h>
#include <ui.h>
#include <page_manager.h>
#include <math.h>
#include <string.h>
#include <stdlib.h>#define X_GAP 5
#define Y_GAP 5static Button g_tButtons[ITEMCFG_MAX_NUM];
static int g_tButtonCnt;static int MainPageOnPressed(struct Button *ptButton, PDispBuff ptDispBuff, PInputEvent ptInputEvent)
{unsigned int dwColor = BUTTON_DEFAULT_COLOR;char name[100];char status[100];char *strButton;char *command_status[3] = {"err", "ok", "percent"};int command_status_index = 0;char command[1000];PItemCfg ptItemCfg;strButton = ptButton->name;/* 1. 对于触摸屏事件 */if ((ptInputEvent->iType == INPUT_TYPE_TOUCH) && (ptInputEvent->iPressure)){/* 1.1 分辨能否被点击 */if (GetItemCfgByName(ptButton->name)->bCanBeTouched == 0)return -1;/* 1.2 修改颜色 */ptButton->status = !ptButton->status;if (ptButton->status){dwColor = BUTTON_PRESSED_COLOR;command_status_index = 1;}}else if (ptInputEvent->iType == INPUT_TYPE_NET){/* 2. 对于网络事件 *//* 根据传入的字符串修改颜色 : wifi ok, wifi err, burn 70 */sscanf(ptInputEvent->str, "%s %s", name, status);if (strcmp(status, "ok") == 0){command_status_index = 1;dwColor = BUTTON_PRESSED_COLOR;}else if (strcmp(status, "err") == 0){command_status_index = 0;dwColor = BUTTON_DEFAULT_COLOR;}else if (status[0] >= '0' && status[0] <= '9'){			command_status_index = 2;dwColor = BUTTON_PERCENT_COLOR;strButton = status;			}elsereturn -1;}else{return -1;}/* 绘制底色 */DrawRegion(&ptButton->tRegion, dwColor);/* 居中写文字 */DrawTextInRegionCentral(strButton, &ptButton->tRegion, BUTTON_TEXT_COLOR);/* flush to lcd/web */FlushDisplayRegion(&ptButton->tRegion, ptDispBuff);/* 执行command */ptItemCfg = GetItemCfgByName(ptButton->name);if (ptItemCfg->command[0] != '\0'){sprintf(command, "%s %s", ptItemCfg->command, command_status[command_status_index]);system(command);}return 0;
}static int GetFontSizeForAllButton(void)
{int i;int max_len = -1;int max_index = 0;int len;RegionCartesian tRegionCar;float k, kx, ky;/* 1. 找出name最长的Button */for (i = 0; i < g_tButtonCnt; i++){len = strlen(g_tButtons[i].name);if (len > max_len){max_len = len;max_index = i;}}/* 2. 以font_size =100, 算出它的外框 */SetFontSize(100);GetStringRegionCar(g_tButtons[max_index].name, &tRegionCar);/* 3. 把文字的外框缩放为Button的外框 */kx = (float)g_tButtons[max_index].tRegion.iWidth / tRegionCar.iWidth;ky = (float)g_tButtons[max_index].tRegion.iHeigh / tRegionCar.iHeigh;//printf("button width / str width   = %d/%d = %f\n", g_tButtons[max_index].tRegion.iWidth, tRegionCar.iWidth, kx);//printf("button height / str height = %d/%d = %f\n", g_tButtons[max_index].tRegion.iHeigh, tRegionCar.iHeigh, ky);if (kx < ky)k = kx;elsek = ky;//printf("font size = %d\n", (int)(k*100));/* 4. 反算出font size, 只取0.80, 避免文字过于接近边界 */return k * 100 * 0.8;
}static void GenerateButtons(void)
{int width, height;int n_per_line;int row, rows;int col;int n;PDispBuff pDispBuff;int xres, yres;int start_x, start_y;int pre_start_x, pre_start_y;PButton pButton;int i = 0;int iFontSize;/* 算出单个按钮的width/height */g_tButtonCnt = n = GetItemCfgCount();pDispBuff = GetDisplayBuffer();xres = pDispBuff->iXres;yres = pDispBuff->iYres;width = sqrt(1.0/0.618 *xres * yres / n);n_per_line = xres / width + 1;width  = xres / n_per_line;height = 0.618 * width;	/* 居中显示:  计算每个按钮的region  */start_x = (xres - width * n_per_line) / 2;rows    = n / n_per_line;if (rows * n_per_line < n)rows++;start_y = (yres - rows*height)/2;/* 计算每个按钮的region */for (row = 0; (row < rows) && (i < n); row++){pre_start_y = start_y + row * height;pre_start_x = start_x - width;for (col = 0; (col < n_per_line) && (i < n); col++){pButton = &g_tButtons[i];pButton->tRegion.iLeftUpX = pre_start_x + width;pButton->tRegion.iLeftUpY = pre_start_y;pButton->tRegion.iWidth   = width - X_GAP;pButton->tRegion.iHeigh   = height - Y_GAP;pre_start_x = pButton->tRegion.iLeftUpX;/* InitButton */InitButton(pButton, GetItemCfgByIndex(i)->name, NULL, NULL, MainPageOnPressed);i++;}}iFontSize = GetFontSizeForAllButton();//SetFontSize(iFontSize);/* OnDraw */for (i = 0; i < n; i++){g_tButtons[i].iFontSize = iFontSize;g_tButtons[i].OnDraw(&g_tButtons[i], pDispBuff);}
}static int isTouchPointInRegion(int iX, int iY, PRegion ptRegion)
{if (iX < ptRegion->iLeftUpX || iX >= ptRegion->iLeftUpX + ptRegion->iWidth)return 0;if (iY < ptRegion->iLeftUpY || iY >= ptRegion->iLeftUpY + ptRegion->iHeigh)return 0;return 1;
}static PButton GetButtonByName(char *name)
{int i;for (i = 0; i < g_tButtonCnt; i++){if (strcmp(name, g_tButtons[i].name) == 0)return &g_tButtons[i];}return NULL;
}static PButton GetButtonByInputEvent(PInputEvent ptInputEvent)
{int i;char name[100];if (ptInputEvent->iType == INPUT_TYPE_TOUCH){for (i = 0; i < g_tButtonCnt; i++){if (isTouchPointInRegion(ptInputEvent->iX, ptInputEvent->iY, &g_tButtons[i].tRegion))return &g_tButtons[i];}}else if (ptInputEvent->iType == INPUT_TYPE_NET){sscanf(ptInputEvent->str, "%s", name);return GetButtonByName(name);}else{return NULL;}return NULL;
}static void MainPageRun(void *pParams)
{int error;InputEvent tInputEvent;PButton ptButton;PDispBuff ptDispBuff = GetDisplayBuffer();/* 读取配置文件 */error = ParseConfigFile();if (error)return ;/* 根据配置文件生成按钮、界面 */GenerateButtons();while (1){/* 读取输入事件 */error = GetInputEvent(&tInputEvent);if (error)continue;/* 根据输入事件找到按钮 */ptButton = GetButtonByInputEvent(&tInputEvent);if (!ptButton)continue;/* 调用按钮的OnPressed函数 */ptButton->OnPressed(ptButton, ptDispBuff, &tInputEvent);}
}static PageAction g_tMainPage = {.name = "main",.Run  = MainPageRun,
};void MainPageRegister(void)
{PageRegister(&g_tMainPage);
}