1*4882a593Smuzhiyun #include "mainwindow.h"
2*4882a593Smuzhiyun #include "ui_mainwindow.h"
3*4882a593Smuzhiyun #include <fcntl.h>
4*4882a593Smuzhiyun #include <stdio.h>
5*4882a593Smuzhiyun #include <unistd.h>
6*4882a593Smuzhiyun
MainWindow(QWidget * parent)7*4882a593Smuzhiyun MainWindow::MainWindow(QWidget *parent) :
8*4882a593Smuzhiyun QMainWindow(parent),
9*4882a593Smuzhiyun ui(new Ui::MainWindow)
10*4882a593Smuzhiyun {
11*4882a593Smuzhiyun ui->setupUi(this);
12*4882a593Smuzhiyun
13*4882a593Smuzhiyun connect(ui->slider,SIGNAL(valueChanged(int)),this,SLOT(sliderchanged(int)));
14*4882a593Smuzhiyun
15*4882a593Smuzhiyun fd_edp = ::open("/sys/class/backlight/edp-backlight/brightness",O_RDWR|O_NONBLOCK);
16*4882a593Smuzhiyun fd_lvds = ::open("/sys/class/backlight/lvds-backlight/brightness",O_RDWR|O_NONBLOCK);
17*4882a593Smuzhiyun fd_dsi = ::open("/sys/class/backlight/dsi1-backlight/brightness",O_RDWR|O_NONBLOCK);
18*4882a593Smuzhiyun setWindowState(Qt::WindowMaximized);
19*4882a593Smuzhiyun setWindowFlags(Qt::FramelessWindowHint | Qt::WindowTitleHint | Qt::WindowCloseButtonHint);
20*4882a593Smuzhiyun ui->slider->setMinimum(1);
21*4882a593Smuzhiyun ui->slider->setValue(200);
22*4882a593Smuzhiyun connect(ui->exitBtn, &QPushButton::clicked, this, [=](){
23*4882a593Smuzhiyun close();
24*4882a593Smuzhiyun });
25*4882a593Smuzhiyun }
26*4882a593Smuzhiyun
~MainWindow()27*4882a593Smuzhiyun MainWindow::~MainWindow()
28*4882a593Smuzhiyun {
29*4882a593Smuzhiyun delete ui;
30*4882a593Smuzhiyun if (fd_edp > 0)
31*4882a593Smuzhiyun ::close(fd_edp);
32*4882a593Smuzhiyun if (fd_dsi > 0)
33*4882a593Smuzhiyun ::close(fd_dsi);
34*4882a593Smuzhiyun if (fd_lvds > 0)
35*4882a593Smuzhiyun ::close(fd_lvds);
36*4882a593Smuzhiyun
37*4882a593Smuzhiyun }
38*4882a593Smuzhiyun
sliderchanged(int v)39*4882a593Smuzhiyun void MainWindow::sliderchanged(int v)
40*4882a593Smuzhiyun {
41*4882a593Smuzhiyun char buf[20];
42*4882a593Smuzhiyun sprintf(buf,"%d",v);
43*4882a593Smuzhiyun if (fd_edp > 0)
44*4882a593Smuzhiyun ::write(fd_edp,buf,sizeof(buf));
45*4882a593Smuzhiyun if (fd_dsi > 0)
46*4882a593Smuzhiyun ::write(fd_dsi,buf,sizeof(buf));
47*4882a593Smuzhiyun if (fd_lvds > 0)
48*4882a593Smuzhiyun ::write(fd_lvds,buf,sizeof(buf));
49*4882a593Smuzhiyun }
50*4882a593Smuzhiyun
51*4882a593Smuzhiyun
52