File indexing completed on 2024-05-19 05:42:18

 // ct_lvtqtc_iconhelpers.cpp                               -*-C++-*-
 
 /*
 // Copyright 2023 Codethink Ltd <codethink@codethink.co.uk>
 // SPDX-License-Identifier: Apache-2.0
 //
 // Licensed under the Apache License, Version 2.0 (the "License");
 // you may not use this file except in compliance with the License.
 // You may obtain a copy of the License at
 //
 //     http://www.apache.org/licenses/LICENSE-2.0
 //
 // Unless required by applicable law or agreed to in writing, software
 // distributed under the License is distributed on an "AS IS" BASIS,
 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 // See the License for the specific language governing permissions and
 // limitations under the License.
 */
 #include "ct_lvtqtc_iconhelpers.h"
 
 #include <QApplication>
 #include <QColor>
 #include <QImage>
 #include <QPainter>
 #include <QPalette>
 #include <QPixmap>
 
 QIcon IconHelpers::iconFrom(const QString& resource)
 {
     if (hasBrightBackground()) {
         return QIcon(resource);
     }
 
     auto img = QImage(resource);
     img.invertPixels();
     return QPixmap::fromImage(img);
 }
 
 QIcon IconHelpers::iconFrom(const QIcon& icon)
 {
     if (hasBrightBackground()) {
         return icon;
     }
 
     auto sizes = icon.availableSizes();
     if (sizes.empty()) {
         return icon;
     }
     auto maximum = *std::max_element(sizes.begin(), sizes.end(), [](const QSize& a, const QSize& b) {
         return a.width() < b.width();
     });
 
     auto img = QImage(icon.pixmap(maximum).toImage());
     img.invertPixels();
     return QPixmap::fromImage(img);
 }
 
 bool IconHelpers::hasBrightBackground()
 {
     QPalette pal = qApp->palette();
     const QColor hsvBackground = pal.window().color().toHsv();
     return hsvBackground.value() > 100;
 }