dxfpaintdevice.h

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/*
        Copyright 2006-2026 The QElectroTech Team
        This file is part of QElectroTech.
 
        QElectroTech is free software: you can redistribute it and/or modify
        it under the terms of the GNU General Public License as published by
        the Free Software Foundation, either version 2 of the License, or
        (at your option) any later version.
 
        QElectroTech is distributed in the hope that it will be useful,
        but WITHOUT ANY WARRANTY; without even the implied warranty of
        MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
        GNU General Public License for more details.
 
        You should have received a copy of the GNU General Public License
        along with QElectroTech.  If not, see <http://www.gnu.org/licenses/>.
*/
#ifndef DXFPAINTDEVICE_H
#define DXFPAINTDEVICE_H
 
#include <QPaintDevice>
#include <QPaintEngine>
#include <QPen>
#include <QBrush>
#include <QFont>
#include <QString>

class DxfPaintEngine : public QPaintEngine
{
        public:
                explicit DxfPaintEngine(const QString &filepath);
 
                bool begin(QPaintDevice *pdev) override;
                bool end() override;
                void updateState(const QPaintEngineState &state) override;
 
                void drawLines(const QLineF *lines, int lineCount) override;
                void drawRects(const QRectF *rects, int rectCount) override;
                void drawEllipse(const QRectF &rect) override;
                void drawPath(const QPainterPath &path) override;
                void drawPolygon(const QPointF *points, int pointCount, PolygonDrawMode mode) override;
                void drawTextItem(const QPointF &p, const QTextItem &textItem) override;
                void drawPixmap(const QRectF &r, const QPixmap &pm, const QRectF &sr) override;
 
                Type type() const override { return QPaintEngine::User; }
 
        private:
                QPointF toDxf(const QPointF &scene_point) const;
                void strokePolygon(const QPolygonF &poly, bool close);
 
                QString m_filepath;
                QTransform m_world_transform;
                QPen m_pen;
                QBrush m_brush;
                QFont m_font;
};

class DxfPaintDevice : public QPaintDevice
{
        public:
                explicit DxfPaintDevice(const QString &filepath);
                ~DxfPaintDevice() override;
 
                QPaintEngine *paintEngine() const override;
 
        protected:
                int metric(PaintDeviceMetric metric) const override;
 
        private:
                QString m_filepath;
                DxfPaintEngine *m_engine;
};
 
#endif // DXFPAINTDEVICE_H