mirror of https://github.com/JakubMelka/PDF4QT.git
133 lines
3.6 KiB
C++
133 lines
3.6 KiB
C++
// Copyright (C) 2020-2021 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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#ifndef DIMENSIONTOOL_H
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#define DIMENSIONTOOL_H
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#include "pdfwidgettool.h"
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#include <QAction>
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#include <QPolygonF>
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struct DimensionUnit;
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using DimensionUnits = std::vector<DimensionUnit>;
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struct DimensionUnit
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{
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explicit inline DimensionUnit() = default;
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explicit inline DimensionUnit(pdf::PDFReal scale, QString symbol) :
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scale(scale),
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symbol(qMove(symbol))
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{
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}
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pdf::PDFReal scale = 1.0;
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QString symbol;
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static DimensionUnits getLengthUnits();
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static DimensionUnits getAreaUnits();
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static DimensionUnits getAngleUnits();
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};
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class Dimension
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{
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public:
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enum Type
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{
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Linear,
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Perimeter,
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Area,
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Angular
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};
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inline explicit Dimension() = default;
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inline explicit Dimension(Type type, pdf::PDFInteger pageIndex, pdf::PDFReal measuredValue, std::vector<QPointF> polygon) :
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m_type(type),
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m_pageIndex(pageIndex),
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m_measuredValue(measuredValue),
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m_polygon(qMove(polygon))
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{
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}
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Type getType() const { return m_type; }
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pdf::PDFInteger getPageIndex() const { return m_pageIndex; }
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pdf::PDFReal getMeasuredValue() const { return m_measuredValue; }
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const std::vector<QPointF>& getPolygon() const { return m_polygon; }
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/// Returns true, if definition fo given type is complete
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static bool isComplete(Type type, const std::vector<QPointF>& polygon);
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private:
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Type m_type = Linear;
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pdf::PDFInteger m_pageIndex = -1;
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pdf::PDFReal m_measuredValue = 0.0;
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std::vector<QPointF> m_polygon;
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};
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class DimensionTool : public pdf::PDFWidgetTool
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{
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Q_OBJECT
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private:
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using BaseClass = pdf::PDFWidgetTool;
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public:
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enum Style
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{
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LinearHorizontal,
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LinearVertical,
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Linear,
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Perimeter,
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RectanglePerimeter,
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Area,
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RectangleArea,
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Angle,
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LastStyle
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};
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explicit DimensionTool(Style style, pdf::PDFDrawWidgetProxy* proxy, QAction* action, QObject* parent);
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void drawPage(QPainter* painter,
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pdf::PDFInteger pageIndex,
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const pdf::PDFPrecompiledPage* compiledPage,
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pdf::PDFTextLayoutGetter& layoutGetter,
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const QTransform& pagePointToDevicePointMatrix,
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QList<pdf::PDFRenderError>& errors) const override;
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signals:
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void dimensionCreated(Dimension dimension);
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private:
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void onPointPicked(pdf::PDFInteger pageIndex, QPointF pagePoint);
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void onRectanglePicked(pdf::PDFInteger pageIndex, QRectF pageRectangle);
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QPointF adjustPagePoint(QPointF pagePoint) const;
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Dimension::Type getDimensionType() const;
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pdf::PDFReal getMeasuredValue(pdf::PDFInteger pageIndex, const std::vector<QPointF>& pickedPoints) const;
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Style m_style;
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int m_previewPointPixelSize;
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pdf::PDFPickTool* m_pickTool;
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};
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#endif // DIMENSIONTOOL_H
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