60 lines
2.5 KiB
C++
60 lines
2.5 KiB
C++
// Copyright (c) 2014-2024, The Monero Project
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//
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// All rights reserved.
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//
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// Redistribution and use in source and binary forms, with or without modification, are
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// permitted provided that the following conditions are met:
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//
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// 1. Redistributions of source code must retain the above copyright notice, this list of
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// conditions and the following disclaimer.
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//
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// 2. Redistributions in binary form must reproduce the above copyright notice, this list
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// of conditions and the following disclaimer in the documentation and/or other
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// materials provided with the distribution.
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//
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// 3. Neither the name of the copyright holder nor the names of its contributors may be
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// used to endorse or promote products derived from this software without specific
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// prior written permission.
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//
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// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY
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// EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
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// MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
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// THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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// PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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// INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
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// STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF
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// THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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#include "QrCode.hpp"
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#include "QRCodeImageProvider.h"
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QImage QRCodeImageProvider::genQrImage(const QString &id, QSize *size)
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{
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using namespace qrcodegen;
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QrCode qrcode = QrCode::encodeText(id.toStdString().c_str(), QrCode::Ecc::MEDIUM);
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unsigned int black = 0;
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unsigned int white = 1;
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unsigned int borderSize = 4;
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unsigned int imageSize = qrcode.getSize() + (2 * borderSize);
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QImage img = QImage(imageSize, imageSize, QImage::Format_Mono);
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for (unsigned int y = 0; y < imageSize; ++y)
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for (unsigned int x = 0; x < imageSize; ++x)
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if ((x < borderSize) || (x >= imageSize - borderSize) || (y < borderSize) || (y >= imageSize - borderSize))
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img.setPixel(x, y, white);
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else
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img.setPixel(x, y, qrcode.getModule(x - borderSize, y - borderSize) ? black : white);
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if (size)
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*size = QSize(imageSize, imageSize);
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return img;
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}
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QImage QRCodeImageProvider::requestImage(const QString &id, QSize *size, const QSize &/* requestedSize */)
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{
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return genQrImage(id, size);
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}
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