183 lines
5.7 KiB
C
183 lines
5.7 KiB
C
#include <stdio.h>
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#include <stdlib.h>
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#include <fcntl.h>
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#include <unistd.h>
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#include <linux/input.h>
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#include <sys/time.h>
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#include <linux/input.h>
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#include <fcntl.h>
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#include <stdio.h>
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#include <stdint.h>
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#include <pthread.h>
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#include "keyboard.h"
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#include <unistd.h>
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#include <stdlib.h>
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#include <sys/stat.h>
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#include <string.h>
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#include <sys/socket.h>
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#include <netinet/in.h>
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#include <arpa/inet.h>
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#include <netdb.h>
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#include <unistd.h>
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#include <sys/types.h>
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#include <sys/time.h>
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#include <fcntl.h>
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#include <sys/mman.h>
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#include <arpa/inet.h>
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#include <netdb.h>
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#include "confile.h"
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#include "Util.h"
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#define KEY_EVENT_DEV0_NAME "/dev/input/event0"
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//#define KEY_EVENT_DEV0_NAME "/dev/input/event1"
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// 长按阈值（毫秒）
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#define LONG_PRESS_THRESHOLD 1000
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// 屏幕坐标范围定义
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#define SCREEN_WIDTH 4096
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#define SCREEN_HEIGHT 4096
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//int switch_video;
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unsigned char key_value;
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typedef struct {
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int min_x;
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int min_y;
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int max_x;
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int max_y;
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} TouchArea;
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// 触摸区域定义
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static const TouchArea AREA1 = {0, 0, 2048, 2048};
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static const TouchArea AREA2 = {2048, 0, 4096, 2048};
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static const TouchArea AREA3 = {0, 2048, 2048, 4096};
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static const TouchArea AREA4 = {0, 2048, 4096, 4096}; //{2048, 2048, 4096, 4096}
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//static const TouchArea AREA1 = {0, 0, 1024, 4096};
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//static const TouchArea AREA2 = {1024, 0, 3072, 2730};
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//static const TouchArea AREA3 = {1024, 2730, 3072, 4096};
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//static const TouchArea AREA4 = {3072, 0, 4096, 4096};
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static const TouchArea FULL_SCREEN = {0,0, SCREEN_WIDTH, SCREEN_HEIGHT};
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/**
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* 检查坐标是否在指定区域内
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*/
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static int is_point_in_area(int x, int y, const TouchArea *area) {
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return (x >= area->min_x && x < area->max_x &&
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y >= area->min_y && y < area->max_y);
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}
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int *switch_memory_open(void) {
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char buf[128];
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int fd;
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sprintf(buf, "/video_switch");
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//sprintf(buf, "/switch_mode");
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fd = shm_open(buf, O_CREAT | O_RDWR, S_IRUSR | S_IWUSR);
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if(fd < 0) { perror("shm_open"); exit(1); }
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if (ftruncate(fd, 4096) == -1) { perror("ftruncate"); exit(1); }
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int *retval = mmap(NULL, 4096, PROT_READ | PROT_WRITE, MAP_SHARED, fd, 0);
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return retval;
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}
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int main() {
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int count;
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// 打开触摸屏设备节点
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int fd = open(KEY_EVENT_DEV0_NAME, O_RDONLY);
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if (fd < 0) {
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perror("打开event0失败");
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return -1;
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}
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int *switch_mode;
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// 初始化输入事件结构体
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struct input_event key_event = {0};
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// 长按判定所需变量
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long press_sec = 0, press_usec = 0; // 按下时间戳
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int x_coord = 0, y_coord = 0; // 触摸坐标
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int is_press = 0; // 触摸按下标记
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switch_mode = switch_memory_open();
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printf("switch %d \n",switch_mode[0]);
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count = switch_mode[0];
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while (1) {
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count =switch_mode[0];
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//printf("count %d \n",count);
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// 读取1个input_event（16字节），阻塞等待触摸事件
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ssize_t len = read(fd, &key_event, sizeof(struct input_event));
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if (len != sizeof(struct input_event)) {
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perror("读取事件失败");
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close(fd);
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return -1;
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}
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//提取坐标（EV_ABS）
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if (key_event.type == EV_ABS) {
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if (key_event.code == ABS_X) {
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x_coord = key_event.value; // X轴坐标（无需转小端，内核已处理）
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} else if (key_event.code == ABS_Y) {
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y_coord = key_event.value; // Y轴坐标
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}
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}
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// 解析触摸按下/松开（EV_KEY + BTN_TOUCH）
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else if (key_event.type == EV_KEY && key_event.code == BTN_TOUCH) {
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// 触摸按下
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if (key_event.value == 1) {
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press_sec = key_event.time.tv_sec;
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press_usec = key_event.time.tv_usec;
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is_press = 1;
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}
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// 触摸松开（判定长按）
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else if (key_event.value == 0 ) {
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// 计算时间差（毫秒）
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long diff_sec = key_event.time.tv_sec - press_sec;
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long diff_usec = key_event.time.tv_usec - press_usec;
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long diff_ms = diff_sec * 1000 + diff_usec / 1000;
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// 判定长按/短按
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if (diff_ms >= LONG_PRESS_THRESHOLD) {
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printf("长按判定 | 持续%ldms | 坐标：X=%d, Y=%d\n", diff_ms, x_coord, y_coord);
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if(count==1){
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//if(switch_mode[0]==1){
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if(is_point_in_area(x_coord, y_coord, &AREA1)){
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count=2;
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switch_mode[0]=count;
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printf("--count %d \n",count);
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}else if(is_point_in_area(x_coord, y_coord, &AREA2)){
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count=3;
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switch_mode[0]=count;
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printf("--count %d \n",count);
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}else if(is_point_in_area(x_coord, y_coord, &AREA3)){
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count=4;
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switch_mode[0]=count;
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printf("--count %d \n",count);
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}else if(is_point_in_area(x_coord, y_coord, &AREA4)){
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count=5;
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switch_mode[0]=count;
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printf("--count %d \n",count);
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}
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}else if(count==2 ||count==3 ||count==4 ||count==5 ){
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if(is_point_in_area(x_coord, y_coord, &FULL_SCREEN))
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{ count=1;
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switch_mode[0]=count;
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printf("--count %d \n",count);
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}
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}
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} else {
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//printf("短按 | 持续%ldms | 坐标：X=%d, Y=%d\n", diff_ms, x_coord, y_coord);
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}
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// 重置状态
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is_press = 0;
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x_coord = 0;
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y_coord = 0;
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}
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}
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// 同步事件（EV_SYN，无实际值，仅标记一组事件结束）
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//else if (key_event.type == EV_SYN) {
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//}
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}
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close(fd);
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return 0;
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}
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