1/*
2 * Copyright (C) 2020-2022 Roy Qu (royqh1979@gmail.com)
3 *
4 * This program is free software: you can redistribute it and/or modify
5 * it under the terms of the GNU General Public License as published by
6 * the Free Software Foundation, either version 3 of the License, or
7 * (at your option) any later version.
8 *
9 * This program is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 * GNU General Public License for more details.
13 *
14 * You should have received a copy of the GNU General Public License
15 * along with this program. If not, see <https://www.gnu.org/licenses/>.
16 */
17#include "customdisablediconengine.h"
18
19#include <QImage>
20#include <QPainter>
21#include <QPixmap>
22#include <QDebug>
23
24CustomDisabledIconEngine::CustomDisabledIconEngine()
25{
26
27}
28
29void CustomDisabledIconEngine::paint(QPainter *painter, const QRect &rect, QIcon::Mode mode, QIcon::State /*state*/)
30{
31 painter->save();
32 painter->setClipRect(rect);
33 QRect newRect = rect;
34 QPixmap pixmap;
35 if (mode == QIcon::Mode::Disabled)
36 pixmap = mDisabledPixmap;
37 else
38 pixmap = mPixmap;
39 if (pixmap.size().width() < rect.width()) {
40 newRect.setLeft( rect.left()+(rect.width() - pixmap.size().width())/2);
41 newRect.setWidth(pixmap.size().width());
42 }
43 if (pixmap.size().height() < rect.height()) {
44 newRect.setTop( rect.top()+(rect.height() - pixmap.size().height())/2);
45 newRect.setHeight(pixmap.size().height());
46 }
47 painter->drawPixmap(newRect,pixmap);
48 painter->restore();
49}
50
51QIconEngine *CustomDisabledIconEngine::clone() const
52{
53 CustomDisabledIconEngine* eng = new CustomDisabledIconEngine();
54 eng->mPixmap = mPixmap;
55 eng->mDisabledPixmap = mDisabledPixmap;
56 return eng;
57}
58
59QPixmap CustomDisabledIconEngine::pixmap(const QSize &/*size*/, QIcon::Mode mode, QIcon::State /*state*/)
60{
61 if (mode == QIcon::Mode::Disabled)
62 return mDisabledPixmap;
63 else
64 return mPixmap;
65}
66
67void CustomDisabledIconEngine::addPixmap(const QPixmap &pixmap, QIcon::Mode /*mode*/, QIcon::State /*state*/)
68{
69 setPixmap(pixmap);
70}
71
72void CustomDisabledIconEngine::addFile(const QString &fileName, const QSize &/*size*/, QIcon::Mode /*mode*/, QIcon::State /*state*/)
73{
74 setPixmap(QPixmap(fileName));
75}
76
77void CustomDisabledIconEngine::setPixmap(const QPixmap &pixmap)
78{
79 mPixmap = pixmap;
80 if (pixmap.isNull())
81 mDisabledPixmap = pixmap;
82 else {
83 QImage oldImage = mPixmap.toImage();
84 QImage image(mPixmap.size(), QImage::Format_ARGB32);
85 for (int x=0;x<image.width();x++) {
86 for (int y=0;y<image.height();y++) {
87 QColor c = oldImage.pixelColor(x,y);
88 int gray = 0.299 * c.red() + 0.587 * c.green() + 0.114 * c.blue();
89 QColor c2(gray,gray,gray,c.alpha());
90 c2 = c2.darker();
91 image.setPixelColor(x,y,c2);
92 }
93 }
94 mDisabledPixmap = QPixmap::fromImage(image);
95 mDisabledPixmap.setDevicePixelRatio(mPixmap.devicePixelRatioF());
96 }
97}
98