mirror of
https://github.com/zhuzichu520/FluentUI.git
synced 2024-11-23 11:17:15 +08:00
58 lines
1.8 KiB
C++
58 lines
1.8 KiB
C++
#include "QRCode.h"
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#include "BarcodeFormat.h"
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#include "BitMatrix.h"
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#include "MultiFormatWriter.h"
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using namespace ZXing;
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QRCode::QRCode(QQuickItem* parent) : QQuickPaintedItem(parent)
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{
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color(QColor(0,0,0,255));
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bgColor(QColor(255,255,255,255));
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size(100);
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setWidth(_size);
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setHeight(_size);
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connect(this,&QRCode::textChanged,this,[=]{update();});
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connect(this,&QRCode::colorChanged,this,[=]{update();});
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connect(this,&QRCode::bgColorChanged,this,[=]{update();});
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connect(this,&QRCode::sizeChanged,this,[=]{
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setWidth(_size);
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setHeight(_size);
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update();
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});
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}
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void QRCode::paint(QPainter* painter)
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{
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if(_text.isEmpty()){
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return;
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}
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if(_text.length()>1108){
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return;
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}
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painter->save();
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auto format = ZXing::BarcodeFormatFromString("QRCode");
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auto writer = MultiFormatWriter(format);
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writer.setMargin(0);
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writer.setEncoding(ZXing::CharacterSet::UTF8);
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auto matrix = writer.encode(_text.toUtf8().constData(), 0, 0);
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auto bitmap = ToMatrix<uint8_t>(matrix);
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auto image = QImage(bitmap.data(), bitmap.width(), bitmap.height(), bitmap.width(), QImage::Format::Format_Grayscale8).copy();
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QImage rgbImage = image.convertToFormat(QImage::Format_ARGB32);
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for (int y = 0; y < rgbImage.height(); ++y) {
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for (int x = 0; x < rgbImage.width(); ++x) {
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QRgb pixel = rgbImage.pixel(x, y);
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if (qRed(pixel) == 0 && qGreen(pixel) == 0 && qBlue(pixel) == 0) {
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rgbImage.setPixelColor(x, y, _color);
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}
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if (qRed(pixel) == 255 && qGreen(pixel) == 255 && qBlue(pixel) == 255) {
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rgbImage.setPixelColor(x, y, _bgColor);
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}
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}
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}
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painter->drawImage(QRect(0, 0, static_cast<int>(width()), static_cast<int>(height())), rgbImage);
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painter->restore();
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}
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