mirror of https://github.com/JakubMelka/PDF4QT.git
65 lines
2.1 KiB
C++
65 lines
2.1 KiB
C++
// Copyright (C) 2021 Jakub Melka
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//
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// This file is part of PDF4QT.
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//
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// PDF4QT is free software: you can redistribute it and/or modify
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// it under the terms of the GNU Lesser General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// with the written consent of the copyright owner, any later version.
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//
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// PDF4QT is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU Lesser General Public License for more details.
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//
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// You should have received a copy of the GNU Lesser General Public License
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// along with PDF4QT. If not, see <https://www.gnu.org/licenses/>.
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#include "pdfpainterutils.h"
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#include <QFontMetrics>
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namespace pdf
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{
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QRect PDFPainterHelper::drawBubble(QPainter* painter, QPoint point, QColor color, QString text, Qt::Alignment alignment)
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{
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QFontMetrics fontMetrics = painter->fontMetrics();
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const int lineSpacing = fontMetrics.lineSpacing();
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const int bubbleHeight = lineSpacing* 2;
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const int bubbleWidth = lineSpacing + fontMetrics.horizontalAdvance(text);
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QRect rectangle(point, QSize(bubbleWidth, bubbleHeight));
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if (alignment.testFlag(Qt::AlignVCenter))
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{
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rectangle.translate(0, -rectangle.height() / 2);
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}
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else if (alignment.testFlag(Qt::AlignTop))
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{
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rectangle.translate(0, -rectangle.height());
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}
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if (alignment.testFlag(Qt::AlignHCenter))
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{
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rectangle.translate(-rectangle.width() / 2, 0);
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}
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else if (alignment.testFlag(Qt::AlignLeft))
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{
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rectangle.translate(-rectangle.width(), 0);
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}
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PDFPainterStateGuard guard(painter);
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painter->setRenderHint(QPainter::Antialiasing);
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painter->setPen(Qt::NoPen);
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painter->setBrush(QBrush(color));
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painter->drawRoundedRect(rectangle, rectangle.height() / 2, rectangle.height() / 2, Qt::AbsoluteSize);
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painter->setPen(Qt::black);
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painter->drawText(rectangle, Qt::AlignCenter, text);
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return rectangle;
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}
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} // namespace pdf
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