From 28e63edca5b51486394add0fcae7c8868b034f94 Mon Sep 17 00:00:00 2001
From: Tim Redfern <tim@eclectronics.org>
Date: Wed, 23 Oct 2013 13:50:05 +0100
Subject: svg loader resolution independent

---
 rotord/src/nodes_drawing.h | 15 ++++++++++++++-
 1 file changed, 14 insertions(+), 1 deletion(-)

(limited to 'rotord/src/nodes_drawing.h')

diff --git a/rotord/src/nodes_drawing.h b/rotord/src/nodes_drawing.h
index 79082cc..b26841e 100644
--- a/rotord/src/nodes_drawing.h
+++ b/rotord/src/nodes_drawing.h
@@ -232,16 +232,28 @@ namespace Rotor {
 			Svg(map<string,string> &settings):Svg() {
 				base_settings(settings);
 				rsvg=rsvg_handle_new_from_file((settings["media_path"]+attributes["filename"]->value).c_str(),nullptr);
+				if (rsvg) {
+					rsvg_handle_get_dimensions(rsvg,&dims);
+					cerr<<"Rotor: SVG loaded "<<attributes["filename"]->value<<" , "<<dims.width<<"x"<<dims.height<<endl;
+				}
+				else cerr<<"Rotor: SVG failed to load "<<attributes["filename"]->value<<endl;
 			};
 			~Svg(){};
 			Svg* clone(map<string,string> &_settings) { return new Svg(_settings);};
 			void vector_output(cairo_t * cr,const Frame_spec &frame){
+				//to make it resolution independent
+				//translate the difference between screen and drawing
+
 				if (rsvg){
+					float scale=frame.w/dims.width;
+
 					cairo_save(cr); //not really even necessary?
 					cairo_translate(cr, frame.w/2, frame.h/2);
 					cairo_translate(cr, parameters["x"]->value * frame.w, parameters["y"]->value * frame.h);
-					cairo_scale(cr, parameters["scale"]->value , parameters["scale"]->value );
+					cairo_scale(cr, parameters["scale"]->value*scale, parameters["scale"]->value*scale);
 					cairo_rotate(cr,(parameters["rotation"]->value/180.0f)*M_PI);
+					cairo_translate(cr, -frame.w/2, -frame.h/2);
+					cairo_translate(cr, frame.w/2-(dims.width/2), frame.h/2-(dims.height/2));
 					
 					rsvg_handle_render_cairo(rsvg,cr);
 
@@ -251,6 +263,7 @@ namespace Rotor {
 			}
 		private:
 			RsvgHandle * rsvg;
+			RsvgDimensionData dims;
 	};
 }
 
-- 
cgit v1.2.3