X-Git-Url: https://git.lyx.org/gitweb/?a=blobdiff_plain;f=src%2Finsets%2Frender_preview.C;h=5badea260db3690bd1119f9f68fb81e19a8ced4d;hb=e28331ed63062dea10d0a21b9ec12034b4b17b9a;hp=21ce5c58b68c33c273ca0ec96d8b2c679cae1818;hpb=f6730f66b0d146cd7ec062cb371014ba0211010b;p=lyx.git

diff --git a/src/insets/render_preview.C b/src/insets/render_preview.C
index 21ce5c58b6..5badea260d 100644
--- a/src/insets/render_preview.C
+++ b/src/insets/render_preview.C
@@ -28,6 +28,7 @@
 #include "graphics/PreviewLoader.h"
 #include "graphics/Previews.h"
 
+#include "support/filename.h"
 #include "support/lstrings.h"
 
 #include <boost/bind.hpp>
@@ -35,6 +36,8 @@
 
 namespace lyx {
 
+using support::FileName;
+
 using std::string;
 using std::auto_ptr;
 
@@ -110,7 +113,7 @@ RenderPreview::getPreviewImage(Buffer const & buffer) const
 }
 
 
-void RenderPreview::metrics(MetricsInfo & mi, Dimension & dim) const
+bool RenderPreview::metrics(MetricsInfo & mi, Dimension & dim) const
 {
 	BOOST_ASSERT(mi.base.bv && mi.base.bv->buffer());
 
@@ -132,7 +135,9 @@ void RenderPreview::metrics(MetricsInfo & mi, Dimension & dim) const
 		dim.wid = 15 + theFontMetrics(font).width(stat);
 	}
 
+	bool const changed = dim_ != dim;
 	dim_ = dim;
+	return changed;
 }
 
 
@@ -238,11 +243,11 @@ void RenderPreview::imageReady(graphics::PreviewImage const & pimage)
 
 RenderMonitoredPreview::RenderMonitoredPreview(InsetBase const * inset)
 	: RenderPreview(inset),
-	  monitor_(std::string(), 2000)
+	  monitor_(FileName(), 2000)
 {}
 
 
-void RenderMonitoredPreview::setAbsFile(string const & file)
+void RenderMonitoredPreview::setAbsFile(FileName const & file)
 {
 	monitor_.reset(file);
 }