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41 lines
1.2 KiB
41 lines
1.2 KiB
#include "backgroundscreen.h"
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#include <QMessageBox>
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#include <QGuiApplication>
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#include <QScreen>
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BackgroundScreen::BackgroundScreen(QWidget *parent)
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: QWidget(parent) {
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}
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BackgroundScreen::~BackgroundScreen()
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{
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}
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void BackgroundScreen::activateBackground()
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{
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// Set the background image and scale it
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QImage image(":/background");
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if (image.isNull()) {
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return;
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}
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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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}
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