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/***************************************************************************
* This file is part of Robocut. *
* Copyright (C) 2010 Tim Hutt <tdhutt@gmail.com> *
* Copyright (C) 2010 Markus Schulz <schulz@alpharesearch.de> *
* *
* This program 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 3 of the License, or *
* (at your option) any later version. *
* *
* This program 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 this program; if not, write to the *
* Free Software Foundation, Inc., *
* 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA. *
***************************************************************************/
#pragma once
// TODO: Rename this file to PathPaintDevice.h
#include <QPaintDevice>
#include <QList>
#include <QPolygonF>
#include <QSet>
class PathPaintEngine;
// Needed for QSet<QPolygonF>. Simply concatenates all the coordinates in a QByteArray and hashes that.
uint qHash(const QPolygonF& key);
class PathPaintDevice : public QPaintDevice
{
public:
PathPaintDevice(double widthInMm, double heightInMm, double pixelsPerMm = 90.0/25.4);
~PathPaintDevice();
// Adds a path to the device.
// Also automatically ignores duplicate paths, which QSvgPainter creates (I guess for the fill and stroke).
// Paths are clipped (horribly) to the page. And if any are clipped, clipped() returns true.
void addPath(const QPolygonF& path);
// Get a list of paths.
QList<QPolygonF> paths();
// Returns true if any paths had to be clipped.
bool clipped() const;
QPaintEngine* paintEngine() const;
protected:
int metric(PaintDeviceMetric metric) const;
private:
mutable PathPaintEngine* engine;
// The paths added.
QList<QPolygonF> pagePaths;
// Set of paths, so we can detect duplicates.
QSet<QPolygonF> pagePathSet;
bool pathsClipped;
double width;
double height;
double ppm;
};
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