X-Git-Url: https://git.pterodactylus.net/?a=blobdiff_plain;f=synfig-core%2Fsrc%2Fsynfig%2Fdistance.cpp;fp=synfig-core%2Fsrc%2Fsynfig%2Fdistance.cpp;h=efac8e93b47f48dfd89d7d7457d3c52864f35f46;hb=a095981e18cc37a8ecc7cd237cc22b9c10329264;hp=0000000000000000000000000000000000000000;hpb=9459638ad6797b8139f1e9f0715c96076dbf0890;p=synfig.git

diff --git a/synfig-core/src/synfig/distance.cpp b/synfig-core/src/synfig/distance.cpp
new file mode 100644
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+++ b/synfig-core/src/synfig/distance.cpp
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+/* === S Y N F I G ========================================================= */
+/*!	\file distance.cpp
+**	\brief Template File
+**
+**	$Id$
+**
+**	\legal
+**	Copyright (c) 2002-2005 Robert B. Quattlebaum Jr., Adrian Bentley
+**	Copyright (c) 2008 Chris Moore
+**
+**	This package 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.
+**
+**	This package 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.
+**	\endlegal
+*/
+/* ========================================================================= */
+
+/* === H E A D E R S ======================================================= */
+
+#ifdef USING_PCH
+#	include "pch.h"
+#else
+#ifdef HAVE_CONFIG_H
+#	include <config.h>
+#endif
+
+#include "distance.h"
+#include "renddesc.h"
+#include "general.h"
+#include <ctype.h>
+#endif
+
+/* === U S I N G =========================================================== */
+
+using namespace std;
+using namespace etl;
+using namespace synfig;
+
+/* === M A C R O S ========================================================= */
+
+#define POINTS_PER_INCH		  (72.0)
+#define INCHES_PER_METER	  (39.3700787402)
+#define POINTS_PER_METER	  (POINTS_PER_INCH*INCHES_PER_METER)
+#define CENTIMETERS_PER_METER (100.0)
+#define MILLIMETERS_PER_METER (1000.0)
+
+#define METERS_PER_UNIT		  (rend_desc.get_physical_w()/abs(rend_desc.get_tl()[0]-rend_desc.get_br()[0]))
+
+/* === G L O B A L S ======================================================= */
+
+/* === P R O C E D U R E S ================================================= */
+
+/* === M E T H O D S ======================================================= */
+
+Distance::Distance(const synfig::String& str)
+{
+	(*this)=str;
+/*	int i(0);
+	float val;
+	int ret(strscanf(str,"%f%n",&val,&i));
+	synfig::info("Distance::Distance(): ret=%d, val=%f",ret,val);
+
+	if(ret<=0)
+	{
+		// Error
+		synfig::error("Distance::Distance(): Bad value \"%s\"",str.c_str());
+		value_=0;
+	}
+	else
+		value_=val;
+
+	synfig::info("Distance::Distance(): system=\"%s\"",String(str.begin()+i,str.end()).c_str());
+	system_=ident_system(String(str.begin()+i,str.end()));
+*/
+}
+
+Distance&
+Distance::operator=(const synfig::String& str)
+{
+	int i(0);
+	float val;
+	int ret(strscanf(str,"%f%n",&val,&i));
+	// synfig::info("Distance::Distance(): ret=%d, val=%f",ret,val);
+
+	if(ret<=0)
+	{
+		// Error
+		synfig::error("Distance::Distance(): Bad value \"%s\"",str.c_str());
+		return *this;
+	}
+	else
+		value_=val;
+
+	synfig::String sys(str.begin()+i,str.end());
+
+	if(sys.size())
+		system_=ident_system(sys);
+	return *this;
+}
+
+synfig::String
+Distance::get_string(int digits)const
+{
+	digits=min(9,max(0,digits));
+	String fmt(strprintf("%%.%01df%%s",digits));
+	return strprintf(fmt.c_str(),value_,system_name(system_).c_str());
+}
+
+void
+Distance::convert(Distance::System target, const RendDesc& rend_desc)
+{
+	value_=get(target,rend_desc);
+	system_=target;
+}
+
+Real
+Distance::get(Distance::System target, const RendDesc& rend_desc)const
+{
+	if(target==SYSTEM_UNITS)
+		return units(rend_desc);
+	if(target==SYSTEM_PIXELS)
+		return units(rend_desc)*METERS_PER_UNIT*rend_desc.get_x_res();
+
+	return meters_to_system(meters(rend_desc),target);
+}
+
+Real
+Distance::meters()const
+{
+	switch(system_)
+	{
+		case SYSTEM_INCHES:		 return value_/INCHES_PER_METER;
+		case SYSTEM_POINTS:		 return value_/POINTS_PER_METER;
+		case SYSTEM_METERS:		 return value_;
+		case SYSTEM_CENTIMETERS: return value_/CENTIMETERS_PER_METER;
+		case SYSTEM_MILLIMETERS: return value_/MILLIMETERS_PER_METER;
+		default: throw BadSystem();
+	}
+}
+
+Real
+Distance::meters(const RendDesc& rend_desc)const
+{
+	if(system_>SYSTEM_PIXELS)
+		return meters();
+	if(system_==SYSTEM_UNITS)
+		return value_*METERS_PER_UNIT;
+	if(system_==SYSTEM_PIXELS)
+		return value_/rend_desc.get_x_res();
+
+	throw BadSystem();
+}
+
+Real
+Distance::units(const RendDesc& rend_desc)const
+{
+	if(system_==SYSTEM_UNITS)
+		return value_;
+
+	Real ret;
+
+	if(system_>SYSTEM_PIXELS)
+		ret=meters();
+	else
+		ret=value_/rend_desc.get_x_res();
+
+	return ret/METERS_PER_UNIT;
+}
+
+
+Real // (static)
+Distance::meters_to_system(Real x,System target_system)
+{
+	switch(target_system)
+	{
+		case SYSTEM_INCHES:		 return x*INCHES_PER_METER;
+		case SYSTEM_POINTS:		 return x*POINTS_PER_METER;
+		case SYSTEM_METERS:		 return x;
+		case SYSTEM_CENTIMETERS: return x*CENTIMETERS_PER_METER;
+		case SYSTEM_MILLIMETERS: return x*MILLIMETERS_PER_METER;
+		default: throw BadSystem();
+	}
+}
+
+Distance::System // (static)
+Distance::ident_system(const synfig::String& x)
+{
+	synfig::String str;
+
+	// Make it all upper case, and remove white space
+	for(unsigned int i=0;i<x.size();i++)if(x[i]!=' ' && x[i]!='\t')str+=toupper(x[i]);
+
+	// If it is plural, make it singular
+	if(str[str.size()-1]=='S')
+		str=synfig::String(str.begin(),str.end()-1);
+
+	if(str.empty() || str=="U" || str=="UNIT")
+		return SYSTEM_UNITS;
+	if(str=="PX" || str=="PIXEL")
+		return SYSTEM_PIXELS;
+	if(str=="PT" || str=="POINT")
+		return SYSTEM_POINTS;
+	if(str=="IN" || str=="\"" || str=="INCHE" || str=="INCH")
+		return SYSTEM_INCHES;
+	if(str=="M" || str=="METER")
+		return SYSTEM_METERS;
+	if(str=="CM" || str=="CENTIMETER")
+		return SYSTEM_CENTIMETERS;
+	if(str=="MM" || str=="MILLIMETER")
+		return SYSTEM_MILLIMETERS;
+
+	synfig::warning("Distance::ident_system(): Unknown distance system \"%s\"",x.c_str());
+
+	return SYSTEM_UNITS;
+}
+
+synfig::String  // (static)
+Distance::system_name(Distance::System system)
+{
+	switch(system)
+	{
+		case SYSTEM_UNITS:		return "u";
+		case SYSTEM_PIXELS:		return "px";
+		case SYSTEM_POINTS:		return "pt";
+		case SYSTEM_INCHES:		return "in";
+		case SYSTEM_METERS:		return "m";
+		case SYSTEM_MILLIMETERS:	return "mm";
+		case SYSTEM_CENTIMETERS:	return "cm";
+
+		default:				throw BadSystem();
+	}
+	return synfig::String();
+}
+
+synfig::String  // (static)
+Distance::system_local_name(Distance::System system)
+{
+	switch(system)
+	{
+		case SYSTEM_UNITS:		return _("Units");
+		case SYSTEM_PIXELS:		return _("Pixels");
+		case SYSTEM_POINTS:		return _("Points");
+		case SYSTEM_INCHES:		return _("Inches");
+		case SYSTEM_METERS:		return _("Meters");
+		case SYSTEM_MILLIMETERS:return _("Millimeters");
+		case SYSTEM_CENTIMETERS:return _("Centimeters");
+
+		default:				throw BadSystem();
+	}
+	return synfig::String();
+}