mirror of
https://github.com/JakubMelka/PDF4QT.git
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94 lines
3.2 KiB
C++
94 lines
3.2 KiB
C++
// MIT License
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//
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// Copyright (c) 2018-2025 Jakub Melka and Contributors
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//
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// Permission is hereby granted, free of charge, to any person obtaining a copy
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// of this software and associated documentation files (the "Software"), to deal
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// in the Software without restriction, including without limitation the rights
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// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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// copies of the Software, and to permit persons to whom the Software is
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// furnished to do so, subject to the following conditions:
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//
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// The above copyright notice and this permission notice shall be included in all
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// copies or substantial portions of the Software.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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// SOFTWARE.
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#ifndef PDFPAINTERUTILS_H
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#define PDFPAINTERUTILS_H
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#include "pdfglobal.h"
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#include <QPainter>
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namespace pdf
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{
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class PDFPageContentProcessorState;
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/// RAII wrapper for painter save/restore
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class PDFPainterStateGuard
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{
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public:
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explicit inline PDFPainterStateGuard(QPainter* painter) :
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m_painter(painter)
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{
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m_painter->save();
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}
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inline ~PDFPainterStateGuard()
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{
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m_painter->restore();
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}
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private:
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QPainter* m_painter;
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};
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struct PDFTransformationDecomposition
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{
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double rotationAngle = 0.0;
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double shearFactor = 0.0;
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double scaleX = 0.0;
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double scaleY = 0.0;
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double translateX = 0.0;
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double translateY = 0.0;
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};
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class PDF4QTLIBCORESHARED_EXPORT PDFPainterHelper
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{
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public:
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/// Draws bubble using painter. Bubble is aligned to the point, colored with color
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/// and inside bubble, text is being paint. Bubble bounding box is being returned.
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/// \param painter Painter
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/// \param point Position of the bubble
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/// \param color Color of the bubble
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/// \param text Text inside the bubble
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/// \param alignment Bubble alignment relative to the bubble position point
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static QRect drawBubble(QPainter* painter, QPoint point, QColor color, QString text, Qt::Alignment alignment);
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/// Creates pen from painter graphicState
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static QPen createPenFromState(const PDFPageContentProcessorState* graphicState, double alpha);
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/// Creates brush from painter graphicState
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static QBrush createBrushFromState(const PDFPageContentProcessorState* graphicState, double alpha);
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static void applyPenToGraphicState(PDFPageContentProcessorState* graphicState, const QPen& pen);
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static void applyBrushToGraphicState(PDFPageContentProcessorState* graphicState, const QBrush& brush);
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/// Decompose transform
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static PDFTransformationDecomposition decomposeTransform(const QTransform& transform);
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/// Compose transform
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static QTransform composeTransform(const PDFTransformationDecomposition& decomposition);
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};
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} // namespace pdf
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#endif // PDFPAINTERUTILS_H
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