50 lines
1.4 KiB
C++
50 lines
1.4 KiB
C++
// PixmapImageItem.cxx - display a QPixmap/QImage directly
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//
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// Written by James Turner, started April 2018.
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//
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// Copyright (C) 2018 James Turner <james@flightgear.org>
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//
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// This program is free software; you can redistribute it and/or
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// modify it under the terms of the GNU General Public License as
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// published by the Free Software Foundation; either version 2 of the
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// License, or (at your option) any later version.
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//
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// This program is distributed in the hope that it will be useful, but
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// WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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// 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, write to the Free Software
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// Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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#include "PixmapImageItem.hxx"
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#include <QPainter>
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PixmapImageItem::PixmapImageItem(QQuickItem* parent) :
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QQuickPaintedItem(parent)
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{
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}
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void PixmapImageItem::paint(QPainter *painter)
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{
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if (_image.isNull())
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return;
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QRect rect(0, 0, width(), height());
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painter->drawImage(rect, _image);
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}
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void PixmapImageItem::setImage(QImage img)
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{
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if (img == _image)
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return;
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_image = img;
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update();
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const auto sz = img.size() / img.devicePixelRatio();
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setImplicitSize(sz.width(), sz.height());
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emit imageChanged();
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}
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