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qt, refactor: Limit scope of QPainter object

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This commit is contained in:
Hennadii Stepanov
2020-08-23 23:47:09 +03:00
parent 197450f808
commit 8071c75d45
1 changed files with 14 additions and 13 deletions
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27
src/qt/qrimagewidget.cpp
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@@ -66,24 +66,25 @@ bool QRImageWidget::setQR(const QString& data, const QString& text)
QImage qrAddrImage = QImage(QR_IMAGE_SIZE, QR_IMAGE_SIZE + (text.isEmpty() ? 0 : 20), QImage::Format_RGB32); QImage qrAddrImage = QImage(QR_IMAGE_SIZE, QR_IMAGE_SIZE + (text.isEmpty() ? 0 : 20), QImage::Format_RGB32);
qrAddrImage.fill(0xffffff); qrAddrImage.fill(0xffffff);
QPainter painter(&qrAddrImage); {
painter.drawImage(0, 0, qrImage.scaled(QR_IMAGE_SIZE, QR_IMAGE_SIZE)); QPainter painter(&qrAddrImage);
painter.drawImage(0, 0, qrImage.scaled(QR_IMAGE_SIZE, QR_IMAGE_SIZE));
if (!text.isEmpty()) { if (!text.isEmpty()) {
QFont font = GUIUtil::fixedPitchFont(); QFont font = GUIUtil::fixedPitchFont();
font.setStyleStrategy(QFont::NoAntialias); font.setStyleStrategy(QFont::NoAntialias);
QRect paddedRect = qrAddrImage.rect(); QRect paddedRect = qrAddrImage.rect();
// calculate ideal font size // calculate ideal font size
qreal font_size = GUIUtil::calculateIdealFontSize(paddedRect.width() - 20, text, font); qreal font_size = GUIUtil::calculateIdealFontSize(paddedRect.width() - 20, text, font);
font.setPointSizeF(font_size); font.setPointSizeF(font_size);
painter.setFont(font); painter.setFont(font);
paddedRect.setHeight(QR_IMAGE_SIZE+12); paddedRect.setHeight(QR_IMAGE_SIZE+12);
painter.drawText(paddedRect, Qt::AlignBottom|Qt::AlignCenter, text); painter.drawText(paddedRect, Qt::AlignBottom|Qt::AlignCenter, text);
}
} }
painter.end();
setPixmap(QPixmap::fromImage(qrAddrImage)); setPixmap(QPixmap::fromImage(qrAddrImage));
return true; return true;