电子相册实现滑动解锁、JPG和BMP图片显示  用到的技巧有文件/系统IO函数，双向循环链表，目录检索和BMP，JPG图片显示的函数

源码在压缩包里

int main(int argc, char *argv[])

{

//初始化设备

Lcd_Init();

//显示锁屏界面

Show_bmp(0, 0,"lock.bmp");

usleep(1000);

//显示锁屏logo

Show_bmp(100, 370,"logo.bmp");

while(1)

{

//获取坐标

get_ts_xy();

Show_bmp(100,370,"frame.bmp");

usleep(10);

//触摸得到x轴变化的坐标，锁屏界面和logo的图标交替刷新，达到logo移动的效果

Show_bmp(a, 370,"logo.bmp");

//判断滑块到达锁屏框最后，松手则跳出循环

if(ts_x2 >= 420&&ts_y2>370&&ts_y2<450)

{

break;

}

}

//在锁屏框最后显示解锁成功的logo

Show_bmp(420, 370,"unlock.bmp");

usleep(500000);   //延时0.5秒

printf("success!!\n");

/*****************************************************************/

d_list = Create_List();

D_Node *p=NULL;

//播放音乐

system("madplay faded.mp3 &");

//检索指定目录里的所有bmp图片，并添加进链表

search_dir("./pic");

p=d_list->next;

printf("It's never too late to learn！\n");

int flag1;

while(1)

{

//显示解锁后的主页面

Show_bmp(0, 0, "main.bmp");

get_x1y1();

//循环显示照片

if(x_2>55&&x_2<315&&y_2>390&&y_2<460)

{

flag1 = 0;

while(1)

{

//检测bmp图片并下拉显示bmp图片

if( strcmp(".bmp", p->picname + strlen(p->picname)-4) == 0&&flag1 == 0)

{

Show_4_bmp(p->picname);

show_buf1();

printf("This is bmp\n");

flag1 = 1;

}

if( strcmp(".bmp", p->picname + strlen(p->picname)-4) == 0)

{

p=p->next;

usleep(1000000);

}

//跳出循环

if(strcmp("00.bmp", p->picname+strlen(p->picname)-6) == 0)

{

break;

}

//检测bmp图片并上拉显示bmp图片

if( strcmp(".bmp", p->picname + strlen(p->picname)-4) == 0&&flag1 == 1)

{

Show_4_bmp(p->picname);

show_buf2();

printf("This is bmp\n");

flag1 = 0;

}

//检测jpg图片并显示jpg图片

if( strcmp(".jpg", p->picname + strlen(p->picname)-4) == 0)

{

show_jpg(p->picname);

printf("This is jpg\n");

}

usleep(1000000);        //延时1秒

p=p->next;

//跳出循环

if(strcmp("00.bmp", p->picname+strlen(p->picname)-6) == 0)

{

break;

}

}

}

//滑动显示照片

if(x_2>490&&x_2<750&&y_2>390&&y_2<460)

{

flag1 = 0;

p=d_list->next;

if( strcmp(".bmp", p->picname + strlen(p->picname)-4) == 0)

{

Show_4_bmp(p->picname);

show_buf1();

printf("This is bmp\n");

}

if( strcmp(".jpg", p->picname + strlen(p->picname)-4) == 0)

{

show_jpg(p->picname);

printf("This is jpg\n");

}

while(1)

{

get_x1y1();

get_flag();

//向右滑

if(i == 1)

{

p = p->next;

//向右慢慢显示bmp照片

if( strcmp(".bmp", p->picname + strlen(p->picname)-4) == 0)

{

Show_4_bmp(p->picname);

show_buf5();

printf("This is bmp\n");

}

//显示jpg图片

if( strcmp(".jpg", p->picname + strlen(p->picname)-4) == 0)

{

show_jpg(p->picname);

printf("This is jpg\n");

}

if(p == d_list)

{

p = p->next;

}

}

//向左滑

if(i == 2)

{

p = p->prev;

//向左慢慢显示bmp照片

if( strcmp(".bmp", p->picname + strlen(p->picname)-4) == 0)

{

Show_4_bmp(p->picname);

show_buf6();

printf("This is bmp\n");

}

if( strcmp(".jpg", p->picname + strlen(p->picname)-4) == 0)

{

show_jpg(p->picname);

printf("This is jpg\n");

}

if(p == d_list)

{

p = p->prev;

}

}

//向上滑

if(i == 3)

{

break;

}

//向下滑

if(i == 4)

{

p=d_list->next;

while(1)

{

//横向百叶窗显示bmp图片

if( strcmp(".bmp", p->picname + strlen(p->picname)-4) == 0&&flag1 == 0)

{

Show_4_bmp(p->picname);

show_buf3();

printf("This is bmp\n");

flag1 = 1;

}

if(strcmp(".bmp", p->picname + strlen(p->picname)-4) == 0)

{

p = p->next;

usleep(1000000);        //延时1秒

}

if(strcmp("00.bmp", p->picname+strlen(p->picname)-6) == 0)

{

break;

}

//纵向百叶窗显示bmp图片

if( strcmp(".bmp", p->picname + strlen(p->picname)-4) == 0&&flag1 == 1)

{

Show_4_bmp(p->picname);

show_buf4();

printf("This is bmp\n");

flag1 = 0;

}

//显示jpg图片

if( strcmp(".jpg", p->picname + strlen(p->picname)-4) == 0)

{

show_jpg(p->picname);

printf("This is jpg\n");

}

usleep(1000000);        //延时1秒

p=p->next;

if(strcmp("00.bmp", p->picname+strlen(p->picname)-6) == 0)

{

break;

}

}

}

}

}

if(i == 3)

{

break;

}

/*                 //判断向上划退出

if(((x_2-x_1)x_1)&&(y_2

{

printf("sa yo la la!\n");

break;

}

if(((x_1-x_2)

{

printf("sa yo la la!\n");

break;

}*/

}

//音乐停止

printf("stop!\n");

system("killall -9 madplay");

//居中显示

show_middle_bmp("05.bmp");

usleep(300000);

//小惊喜

printf("suprise!!!!!!!!!!!!!\n");

p=d_list->prev;

flag1 = 0;

while(1)

{

//显示bmp图片

if( strcmp(".bmp", p->picname + strlen(p->picname)-4) == 0)

{

Show_4_bmp(p->picname);

show_buf0();

printf("This is bmp\n");

}

usleep(30000);

p = p->prev;

if(p == d_list)

{

flag1++;

p=d_list->prev;

}

if(flag1 == 2)

{

break;

}

}

show_middle_bmp("bye.bmp");

//关闭设备

Lcd_Uninit();

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