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44 lines
1.3 KiB
44 lines
1.3 KiB
10 months ago
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#include "mainwindow.h"
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#include "./ui_mainwindow.h"
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#include <QDebug>
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#include <QImage>
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MainWindow::MainWindow(const QString &wallpaperFile, QWidget *parent)
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: QMainWindow(parent)
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, ui(new Ui::MainWindow)
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{
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ui->setupUi(this);
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m_wallpaperFile = wallpaperFile;
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}
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MainWindow::~MainWindow()
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{
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delete ui;
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}
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void MainWindow::applyWallpaper()
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{
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QImage image(m_wallpaperFile);
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if (!image.isNull()) {
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qreal imgRatio = static_cast<qreal>(image.width()) / image.height();
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qreal screenRatio = static_cast<qreal>(this->width()) / this->height();
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QImage scaled;
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if (imgRatio < screenRatio) {
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scaled = image.scaledToWidth(this->width(), Qt::SmoothTransformation);
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int yGap = (scaled.height() - this->height()) / 2;
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scaled = scaled.copy(0, yGap, scaled.width(), this->height());
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} else {
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scaled = image.scaledToHeight(this->height(), Qt::SmoothTransformation);
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int xGap = (scaled.width() - this->width()) / 2;
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scaled = scaled.copy(xGap, 0, this->width(), scaled.height());
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}
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QPixmap bg = QPixmap::fromImage(scaled);
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QPalette palette;
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palette.setBrush(QPalette::Window, bg);
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this->setPalette(palette);
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} else {
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qCritical() << "ERROR: Wallpaper does not exist!";
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}
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}
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