From 237339c3146f0d1039a941561ad316ce8df11856 Mon Sep 17 00:00:00 2001
From: dooglus <dooglus@1f10aa63-cdf2-0310-b900-c93c546f37ac>
Date: Fri, 7 Mar 2008 23:26:58 +0000
Subject: [PATCH] If only one of -w and -h is specified on the command line,
 calculate the other in order to keep the aspect ratio fixed.

git-svn-id: http://svn.voria.com/code@1877 1f10aa63-cdf2-0310-b900-c93c546f37ac
---
 synfig-core/trunk/src/tool/main.cpp | 20 ++++++--------------
 1 file changed, 6 insertions(+), 14 deletions(-)

diff --git a/synfig-core/trunk/src/tool/main.cpp b/synfig-core/trunk/src/tool/main.cpp
index 77281c8..1862f4b 100644
--- a/synfig-core/trunk/src/tool/main.cpp
+++ b/synfig-core/trunk/src/tool/main.cpp
@@ -682,24 +682,16 @@ int extract_RendDesc(arg_list_t &arg_list,RendDesc &desc)
 		else if (flag_requires_value(*iter))
 			iter=next++;
 	}
-	if(w&&h)
+	if (w||h)
 	{
+		if (!w)
+			w = desc.get_w() * h / desc.get_h();
+		else if (!h)
+			h = desc.get_h() * w / desc.get_w();
+
 		desc.set_wh(w,h);
 		VERBOSE_OUT(1)<<strprintf(_("Resolution set to %dx%d"),w,h)<<endl;
 	}
-	else
-	{
-		if(w)
-		{
-			VERBOSE_OUT(1)<<strprintf(_("Width set to %d pixels"),w)<<endl;
-			desc.set_w(w);
-		}
-		if(h)
-		{
-			VERBOSE_OUT(1)<<strprintf(_("Height set to %d pixels"),h)<<endl;
-			desc.set_h(h);
-		}
-	}
 	if(span)
 		desc.set_span(span);
 	return SYNFIGTOOL_OK;
-- 
2.7.4