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72 lines
1.9 KiB
C++
72 lines
1.9 KiB
C++
/*
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* Copyright (C) 2021 - 2022 CutefishOS Team.
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*
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* Author: Reion Wong <reionwong@gmail.com>
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include "backgroundhelper.h"
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#include <QApplication>
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#include <QDebug>
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#include <QPixmap>
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#include <QScreen>
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#include <QRgb>
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BackgroundHelper::BackgroundHelper(QObject *parent)
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: QObject(parent)
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, m_statusBarHeight(25 / qApp->devicePixelRatio())
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{
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}
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void BackgroundHelper::setColor(QColor c)
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{
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emit newColor(c, c.lightness());
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}
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void BackgroundHelper::setBackgound(const QString &fileName)
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{
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QImage img(fileName);
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QSize screenSize = qApp->primaryScreen()->geometry().size();
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img = img.scaled(screenSize.width(), screenSize.height());
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img = img.copy(QRect(0, 0, screenSize.width(), m_statusBarHeight));
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QSize size(img.size());
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img = img.scaledToWidth(size.width() * 0.8);
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size = img.size();
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long long sumR = 0, sumG = 0, sumB = 0;
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int measureArea = size.width() * size.height();
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for (int y = 0; y < size.height(); ++y) {
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QRgb *line = (QRgb *)img.scanLine(y);
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for (int x = 0; x < size.width(); ++x) {
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sumR += qRed(line[x]);
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sumG += qGreen(line[x]);
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sumB += qBlue(line[x]);
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}
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}
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sumR /= measureArea;
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sumG /= measureArea;
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sumB /= measureArea;
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QColor c = QColor(sumR, sumG, sumB);
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emit newColor(c, c.lightness());
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}
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