X-Git-Url: https://git.lyx.org/gitweb/?a=blobdiff_plain;f=src%2Fgraphics%2FPreviewLoader.h;h=ca22a9fa5c56706ef327ded5a5868e1ec837ba4d;hb=38c2cde0d8695ac5287bae218c4a33a2acf18ef8;hp=6910984c9ed13eb77c851ac49ee3bad94403fd4d;hpb=b8d43b05bc8411ae6dd347f40669b0c4a9a0d1ee;p=lyx.git

diff --git a/src/graphics/PreviewLoader.h b/src/graphics/PreviewLoader.h
index 6910984c9e..ca22a9fa5c 100644
--- a/src/graphics/PreviewLoader.h
+++ b/src/graphics/PreviewLoader.h
@@ -18,7 +18,9 @@
 #ifndef PREVIEWLOADER_H
 #define PREVIEWLOADER_H
 
-#include <boost/signal.hpp>
+#include "support/signals.h"
+
+#include <QObject>
 
 #include "ColorCode.h"
 
@@ -30,7 +32,8 @@ namespace graphics {
 
 class PreviewImage;
 
-class PreviewLoader {
+class PreviewLoader : public QObject {
+	Q_OBJECT
 public:
 	/** We need buffer because we require the preamble to the
 	 *  LaTeX file.
@@ -74,10 +77,10 @@ public:
 	 *  has been created and is ready for loading through
 	 *  lyx::graphics::PreviewImage::image().
 	 */
-	typedef boost::signal<void(PreviewImage const &)> sig_type;
-	typedef sig_type::slot_type slot_type;
+	typedef signals2::signal<void(PreviewImage const &)> sig;
+	typedef sig::slot_type slot;
 	///
-	boost::signals::connection connect(slot_type const &) const;
+	signals2::connection connect(slot const &) const;
 
 	/** When PreviewImage has finished loading the image file into memory,
 	 *  it tells the PreviewLoader to tell the outside world
@@ -91,6 +94,12 @@ public:
 	/// The foreground color used
 	static ColorCode foregroundColor() { return Color_preview; }
 
+	double displayPixelRatio() const ;
+
+public Q_SLOTS:
+	///
+	void refreshPreviews();
+
 private:
 	/// noncopyable
 	PreviewLoader(PreviewLoader const &);