X-Git-Url: https://git.lyx.org/gitweb/?a=blobdiff_plain;f=src%2Fgraphics%2FPreviewLoader.h;h=ca22a9fa5c56706ef327ded5a5868e1ec837ba4d;hb=38c2cde0d8695ac5287bae218c4a33a2acf18ef8;hp=0227466f7da4b3da4d6d00445ed1bbf0e2c07e2b;hpb=98ddc514dabfb2556fdfc6c9a8531daf838bebbb;p=lyx.git

diff --git a/src/graphics/PreviewLoader.h b/src/graphics/PreviewLoader.h
index 0227466f7d..ca22a9fa5c 100644
--- a/src/graphics/PreviewLoader.h
+++ b/src/graphics/PreviewLoader.h
@@ -18,8 +18,11 @@
 #ifndef PREVIEWLOADER_H
 #define PREVIEWLOADER_H
 
-#include <boost/signal.hpp>
+#include "support/signals.h"
 
+#include <QObject>
+
+#include "ColorCode.h"
 
 namespace lyx {
 
@@ -29,7 +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.
@@ -67,16 +71,16 @@ public:
 	/** We have accumulated several latex snippets with status "InQueue".
 	 *  Initiate their transformation into bitmap images.
 	 */
-	void startLoading() const;
+	void startLoading(bool wait = false) const;
 
 	/** Connect and you'll be informed when the bitmap image file
 	 *  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
@@ -85,6 +89,16 @@ public:
 
 	/// Which buffer owns this loader.
 	Buffer const & buffer() const;
+	/// The background color used
+	static ColorCode backgroundColor() { return Color_background; }
+	/// The foreground color used
+	static ColorCode foregroundColor() { return Color_preview; }
+
+	double displayPixelRatio() const ;
+
+public Q_SLOTS:
+	///
+	void refreshPreviews();
 
 private:
 	/// noncopyable