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2024-03-06 14:54:30 +08:00
commit edac2715f0
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--- a/lib/engine/rs_units.h
+++ b/lib/engine/rs_units.h
@@ -0,0 +1,95 @@
+/****************************************************************************
+**
+** This file is part of the LibreCAD project, a 2D CAD program
+**
+** Copyright (C) 2015 Dongxu Li (dongxuli2011@gmail.com)
+** Copyright (C) 2010 R. van Twisk (librecad@rvt.dds.nl)
+** Copyright (C) 2001-2003 RibbonSoft. All rights reserved.
+**
+**
+** This file may be distributed and/or modified under the terms of the
+** GNU General Public License version 2 as published by the Free Software 
+** Foundation and appearing in the file gpl-2.0.txt included in the
+** packaging of this file.
+**
+** 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 Street, Fifth Floor, Boston, MA  02110-1301  USA
+**
+** This copyright notice MUST APPEAR in all copies of the script!  
+**
+**********************************************************************/
+
+
+#ifndef RS_UNITS_H
+#define RS_UNITS_H
+
+#include "rs.h"
+
+class RS_Vector;
+class QString;
+
+/**
+ * Conversion methods for units
+ *
+ * @author Andrew Mustun
+ */
+class RS_Units {
+public:
+
+    //static char* unit2sign(RS2::Unit unit);
+
+    //static RS2::Unit string2unit(const char* str, bool* ok=0);
+    //static char* unit2string(RS2::Unit unit);
+
+    static RS2::Unit dxfint2unit(int dxfint);
+
+    static QString unitToString(RS2::Unit u, bool t = true);
+    static RS2::Unit stringToUnit(const QString& u);
+
+	static bool isMetric(RS2::Unit u);
+	static double getFactorToMM(RS2::Unit u);
+	static double convert(double val, RS2::Unit src, RS2::Unit dest);
+	static RS_Vector convert(const RS_Vector& val, RS2::Unit src, RS2::Unit dest);
+	
+    static QString unitToSign(RS2::Unit u);
+
+    static QString formatLinear(double length, RS2::Unit unit,
+                                  RS2::LinearFormat format,
+                                  int prec, bool showUnit=false);
+    static QString formatScientific(double length, RS2::Unit unit,
+                                  int prec, bool showUnit=false);
+    static QString formatDecimal(double length, RS2::Unit unit,
+                                  int prec, bool showUnit=false);
+    static QString formatEngineering(double length, RS2::Unit unit,
+                                  int prec, bool showUnit=false);
+    static QString formatArchitectural(double length, RS2::Unit unit,
+                                  int prec, bool showUnit=false);
+    static QString formatFractional(double length, RS2::Unit unit,
+                                  int prec, bool showUnit=false);
+    static QString formatArchitecturalMetric(double length, RS2::Unit unit,
+                                  int prec, bool showUnit=false);
+
+    static QString formatAngle(double angle, RS2::AngleFormat format,
+                                 int prec);
+    static RS2::AngleFormat numberToAngleFormat(int num);
+
+	static RS_Vector paperFormatToSize(RS2::PaperFormat p);
+	static RS2::PaperFormat paperSizeToFormat(const RS_Vector& s);
+
+	static QString paperFormatToString(RS2::PaperFormat p);
+	static RS2::PaperFormat stringToPaperFormat(const QString& p);
+
+	static void test();
+    static double dpiToScale(double dpi, RS2::Unit unit);
+    static double scaleToDpi(double scale, RS2::Unit unit);
+
+};
+
+
+#endif