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authorNorbert Preining <norbert@preining.info>2019-09-02 13:46:59 +0900
committerNorbert Preining <norbert@preining.info>2019-09-02 13:46:59 +0900
commite0c6872cf40896c7be36b11dcc744620f10adf1d (patch)
tree60335e10d2f4354b0674ec22d7b53f0f8abee672 /graphics/epix/picture_data.h
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+/*
+ * picture_data.h -- ePiX::picture implementation class
+ *
+ * This file is part of ePiX, a C++ library for creating high-quality
+ * figures in LaTeX
+ *
+ * Version 1.1.7
+ * Last Change: July 14, 2007
+ */
+
+/*
+ * Copyright (C) 2001, 2002, 2003, 2004, 2005, 2006, 2007
+ * Andrew D. Hwang <rot 13 nujnat at zngupf dot ubylpebff dot rqh>
+ * Department of Mathematics and Computer Science
+ * College of the Holy Cross
+ * Worcester, MA, 01610-2395, USA
+ */
+
+/*
+ * ePiX 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.
+ *
+ * ePiX 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 ePiX; if not, write to the Free Software Foundation, Inc.,
+ * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ */
+
+/*
+ * The picture_data class was designed with three primary goals:
+ *
+ * (i) Encapsulate state data formerly scattered (and inconsistently
+ * structured) through multiple files,
+ *
+ * (ii) Provide some of the flexibility of building a scene in memory
+ * instead of writing data immediately to the output,
+ *
+ * (iii) Ensure compatibility with existing syntax.
+ *
+ * A picture_data comprises two screens (canvas -- the bounding_box, and
+ * page -- the picture box), unitlength and offsets, state data
+ * (clip_box; angle units; styles for labels, painting, and arrowheads),
+ * and a set of colors so that color dclarations in the output file can
+ * be made using named colors.
+ *
+ * Dozens of global and member functions need to access and modify
+ * the_picture(). Instead of making these functions friends, our data
+ * (except for the color pallet) are public. Under the circumstances,
+ * this seemed the Path of Least Evil.
+ */
+#ifndef EPIX_PICTURE_DATA
+#define EPIX_PICTURE_DATA
+
+#include <string>
+#include <list>
+#include <set>
+
+#include "verbatim.h"
+
+#include "length.h"
+#include "Color.h"
+#include "screen.h"
+
+namespace ePiX {
+
+ class format;
+
+ class picture_data {
+ public:
+ // rely on members' default constructors
+ picture_data();
+
+ picture_data(const picture_data&);
+ picture_data& operator= (const picture_data&);
+ ~picture_data();
+
+ picture_data& add_to_pallet(const Color&);
+
+ void set_format(const format&);
+
+ // output requires knowledge of unitlength; all other ops handled by data
+ void print();
+ void print_to(const format&);
+ void print_to(const std::string& filename, const format&);
+
+ void pre_write(const std::string&);
+ void post_write(const std::string&);
+
+ //// public data (true size, offsets, and screens) ////
+ length the_unitlength;
+ length the_hoffset, the_voffset;
+
+ screen the_canvas;
+ screen the_page;
+
+
+ private:
+ format* m_format;
+ std::set<Color> m_pallet;
+ // user-specified strings to be written before/after start of picture
+ std::list<verbatim> m_pre_writes;
+ std::list<verbatim> m_post_writes;
+ }; // end of class picture_data
+
+} // end of namespace
+
+#endif /* EPIX_PICTURE_DATA */