/* * Copyright (C) 2020-2022 Roy Qu (royqh1979@gmail.com) * * This program is free software: you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation, either version 3 of the License, or * (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program. If not, see <https://www.gnu.org/licenses/>. */ #include "customdisablediconengine.h" #include <QImage> #include <QPainter> #include <QPixmap> #include <QDebug> CustomDisabledIconEngine::CustomDisabledIconEngine() { } void CustomDisabledIconEngine::paint(QPainter *painter, const QRect &rect, QIcon::Mode mode, QIcon::State /*state*/) { painter->save(); painter->setClipRect(rect); QRect newRect = rect; QPixmap pixmap; if (mode == QIcon::Mode::Disabled) pixmap = mDisabledPixmap; else pixmap = mPixmap; if (pixmap.size().width() < rect.width()) { newRect.setLeft( rect.left()+(rect.width() - pixmap.size().width())/2); newRect.setWidth(pixmap.size().width()); } if (pixmap.size().height() < rect.height()) { newRect.setTop( rect.top()+(rect.height() - pixmap.size().height())/2); newRect.setHeight(pixmap.size().height()); } painter->drawPixmap(newRect,pixmap); painter->restore(); } QIconEngine *CustomDisabledIconEngine::clone() const { CustomDisabledIconEngine* eng = new CustomDisabledIconEngine(); eng->mPixmap = mPixmap; eng->mDisabledPixmap = mDisabledPixmap; return eng; } QPixmap CustomDisabledIconEngine::pixmap(const QSize &/*size*/, QIcon::Mode mode, QIcon::State /*state*/) { if (mode == QIcon::Mode::Disabled) return mDisabledPixmap; else return mPixmap; } void CustomDisabledIconEngine::addPixmap(const QPixmap &pixmap, QIcon::Mode /*mode*/, QIcon::State /*state*/) { setPixmap(pixmap); } void CustomDisabledIconEngine::addFile(const QString &fileName, const QSize &/*size*/, QIcon::Mode /*mode*/, QIcon::State /*state*/) { setPixmap(QPixmap(fileName)); } void CustomDisabledIconEngine::setPixmap(const QPixmap &pixmap) { mPixmap = pixmap; if (pixmap.isNull()) mDisabledPixmap = pixmap; else { QImage oldImage = mPixmap.toImage(); QImage image(mPixmap.size(), QImage::Format_ARGB32); for (int x=0;x<image.width();x++) { for (int y=0;y<image.height();y++) { QColor c = oldImage.pixelColor(x,y); int gray = 0.299 * c.red() + 0.587 * c.green() + 0.114 * c.blue(); QColor c2(gray,gray,gray,c.alpha()); c2 = c2.darker(); image.setPixelColor(x,y,c2); } } mDisabledPixmap = QPixmap::fromImage(image); mDisabledPixmap.setDevicePixelRatio(mPixmap.devicePixelRatioF()); } }