79 lines
3.3 KiB
C++
79 lines
3.3 KiB
C++
// ImageDisplayThread.cpp
|
|
#include <QtWidgets>
|
|
#include <QLabel>
|
|
#include <QVBoxLayout>
|
|
#include <QScreen>
|
|
#include <QGuiApplication>
|
|
#include "Page3.h"
|
|
|
|
Page3::Page3(QWidget *parent) {
|
|
|
|
// Get the primary screen
|
|
QScreen *screen = QGuiApplication::primaryScreen();
|
|
|
|
// Get the size of the primary screen (assuming it's the 4K screen)
|
|
QSize screenSize = screen->size();
|
|
|
|
// Add a photo to the first page
|
|
QPixmap photo(":/my/photo/fleur-SE2zTdS1MNo-unsplash.jpg"); // Replace with the actual path to your photo
|
|
this->plabelPhoto1_1 = new QLabel(this);
|
|
this->plabelPhoto1_1->setPixmap(photo.scaled(screenSize.width(), screenSize.height())); // Scale the photo to fill the page while maintaining aspect ratio
|
|
this->plabelPhoto1_1->setGeometry(0, 0, screenSize.width(), screenSize.height()); // Set the position and size of the photo
|
|
|
|
// "Page 1 Content" label
|
|
this->pLabelPage1 = new QLabel("brightness", this);
|
|
this->pLabelPage1->move(0, 0); // Set the position of the label, x-coordinate is 100, y-coordinate is 50
|
|
// Set the font size of the label
|
|
this->pLabelPage1->setFont(QFont("Arial", screenSize.width() / 96 )); // Use Arial font with font size in pixels
|
|
// Set the size of the label to fit the text size and add extra padding
|
|
this->pLabelPage1->setFixedSize(this->pLabelPage1->fontMetrics().boundingRect("brightness").size() + QSize(20, 10));
|
|
|
|
// Slider
|
|
this->psliderPage1 = new QSlider(Qt::Horizontal, this); // Horizontal slider
|
|
psliderPage1->resize(screenSize.width() * 3 / 5, 200); // Set the size of the slider, width is 300, height is 50
|
|
psliderPage1->move(screenSize.width() * 1 / 5, screenSize.height() / 50); // Set the position of the slider, x-coordinate is 200, y-coordinate is 200
|
|
psliderPage1->setMinimum(0); // Minimum value
|
|
psliderPage1->setMaximum(255); // Maximum value, assuming the maximum brightness value is 19200
|
|
psliderPage1->setValue(255); // Set the default brightness value
|
|
// Connect the slider to the slot function
|
|
connect(psliderPage1, &QSlider::valueChanged, this, &Page3::onSliderValueChanged);
|
|
|
|
}
|
|
|
|
// Function: Set screen brightness
|
|
bool Page3::onSliderValueChanged(int brightness)
|
|
|
|
{
|
|
// Limit the brightness value within a reasonable range (typically between 0 and the maximum brightness value)
|
|
const int minBrightness = 0;
|
|
const int maxBrightness = 255; // Assume maximum brightness value is 255
|
|
brightness = qBound(minBrightness, brightness, maxBrightness);
|
|
|
|
// Convert brightness value to string
|
|
QString brightnessStr = QString::number(brightness);
|
|
|
|
// Open the brightness file and write the brightness value
|
|
std::ofstream brightnessFile("/sys/class/backlight/aml-bl/brightness");
|
|
if (!brightnessFile.is_open())
|
|
{
|
|
std::cerr << "Unable to open file /sys/class/backlight/aml-bl/brightness\n";
|
|
return false;
|
|
}
|
|
|
|
brightnessFile << brightnessStr.toStdString();
|
|
brightnessFile.close();
|
|
return true;
|
|
}
|
|
|
|
Page3::~Page3()
|
|
{
|
|
// Release dynamically allocated resources in the destructor
|
|
|
|
// Delete member variable objects
|
|
delete pLabelPage1;
|
|
delete plabelPhoto1_1;
|
|
delete psliderPage1;
|
|
|
|
// Other member variables do not need to be manually deleted as they are automatic objects and will be destroyed automatically when the function exits
|
|
}
|