X-Git-Url: https://git.lyx.org/gitweb/?a=blobdiff_plain;f=src%2Finsets%2Frender_preview.h;h=52bb7ffe0489234ceb62e5024824fcc91665360e;hb=e28331ed63062dea10d0a21b9ec12034b4b17b9a;hp=391ff05955aebdb2142fbdb780dea916a4a1e5e5;hpb=1c4ae33f9a115c8c878b4099f4f518bb58c3fa32;p=lyx.git

diff --git a/src/insets/render_preview.h b/src/insets/render_preview.h
index 391ff05955..52bb7ffe04 100644
--- a/src/insets/render_preview.h
+++ b/src/insets/render_preview.h
@@ -8,7 +8,7 @@
  *
  * Full author contact details are available in file CREDITS.
  *
- * lyx::graphics::RenderPreview is an abstract base class that can help
+ * graphics::RenderPreview is an abstract base class that can help
  * insets to generate previews. The daughter class must instantiate two small
  * methods. The Inset would own an instance of this daughter class.
  */
@@ -19,103 +19,115 @@
 #include "render_base.h"
 
 #include "support/FileMonitor.h"
+#include "support/docstring.h"
 
-#include <boost/signals/signal0.hpp>
+#include <boost/signal.hpp>
 #include <boost/signals/trackable.hpp>
 #include <boost/signals/connection.hpp>
 
+namespace lyx {
+
 class Buffer;
-class BufferView;
+class LyXRC_PreviewStatus;
 class MetricsInfo;
 class PainterInfo;
 
-namespace lyx {
+namespace support { class FileName; }
+
 namespace graphics {
 
 class PreviewImage;
 class PreviewLoader;
 
 } // namespace graphics
-} // namespace lyx
 
 
 class RenderPreview : public RenderBase, public boost::signals::trackable {
 public:
-	/// a wrapper for Previews::activated()
-	static bool activated();
+	/// a wrapper for Previews::status()
+	static LyXRC_PreviewStatus status();
 
-	RenderPreview();
-	RenderPreview(RenderPreview const &);
-	RenderBase * clone() const;
+	RenderPreview(InsetBase const *);
+	RenderPreview(RenderPreview const &, InsetBase const *);
+	std::auto_ptr<RenderBase> clone(InsetBase const *) const;
 
 	/// Compute the size of the object, returned in dim
-	void metrics(MetricsInfo &, Dimension & dim) const;
+	bool metrics(MetricsInfo &, Dimension & dim) const;
 	///
 	void draw(PainterInfo & pi, int x, int y) const;
 
-	/** Find the PreviewLoader, add a LaTeX snippet to it and
-	 *  start the loading process.
+	/** Find the PreviewLoader and add a LaTeX snippet to it.
+	 *  Do not start the loading process.
 	 */
-	void generatePreview(std::string const & latex_snippet,
-			     Buffer const &);
+	void addPreview(docstring const & latex_snippet, Buffer const &);
 
-	/** Add a LaTeX snippet to the PreviewLoader but do not start the
-	 *  loading process.
+	/** Add a LaTeX snippet to the PreviewLoader.
+	 *  Do not start the loading process.
 	 */
-	void addPreview(std::string const & latex_snippet,
-			lyx::graphics::PreviewLoader & ploader);
+	void addPreview(docstring const & latex_snippet,
+			graphics::PreviewLoader & ploader);
+
+	/// Begin the loading process.
+	void startLoading(Buffer const & buffer) const;
 
 	/** Remove a snippet from the cache of previews.
 	 *  Useful if previewing the contents of a file that has changed.
 	 */
 	void removePreview(Buffer const &);
 
-	/// The preview has been generated and is ready to use.
-	bool previewReady() const;
+	/** \returns a pointer to the PreviewImage associated with this snippet
+	 *  of latex.
+	 */
+	graphics::PreviewImage const *
+	getPreviewImage(Buffer const & buffer) const;
 
-	/// Connect and you'll be informed when the preview is ready.
-	typedef boost::signal0<void>::slot_type slot_type;
-	boost::signals::connection connect(slot_type const &);
+	/// equivalent to dynamic_cast
+	virtual RenderPreview * asPreview() { return this; }
 
 private:
 	/// Not implemented.
-	void operator=(RenderPreview const &);
+	RenderPreview & operator=(RenderPreview const &);
 
 	/// This method is connected to the PreviewLoader::imageReady signal.
-	void imageReady(lyx::graphics::PreviewImage const &);
+	void imageReady(graphics::PreviewImage const &);
 
 	/// The thing that we're trying to generate a preview of.
 	std::string snippet_;
 
-	/// We don't own this. Cached for efficiency reasons.
-	lyx::graphics::PreviewImage const * pimage_;
-
 	/** Store the connection to the preview loader so that we connect
 	 *  only once.
 	 */
 	boost::signals::connection ploader_connection_;
 
-	/// This signal is emitted when the preview is ready for display.
-	boost::signal0<void> preview_ready_signal_;
+	/// Inform the core that the inset has changed.
+	InsetBase const * parent_;
 };
 
 
 class RenderMonitoredPreview : public RenderPreview {
 public:
-	RenderMonitoredPreview() : monitor_(std::string(), 2000) {}
+	RenderMonitoredPreview(InsetBase const *);
 	///
-	bool monitoring() const { return monitor_.monitoring(); }
+	void draw(PainterInfo & pi, int x, int y) const;
 	///
-	void startMonitoring(std::string const & file);
+	void setAbsFile(support::FileName const & file);
 	///
-	void stopMonitoring() { monitor_.stop(); }
+	bool monitoring() const { return monitor_.monitoring(); }
+	void startMonitoring() const { monitor_.start(); }
+	void stopMonitoring() const { monitor_.stop(); }
 
 	/// Connect and you'll be informed when the file changes.
+	typedef support::FileMonitor::slot_type slot_type;
 	boost::signals::connection fileChanged(slot_type const &);
 
+	/// equivalent to dynamic_cast
+	virtual RenderMonitoredPreview * asMonitoredPreview() { return this; }
+
 private:
 	///
-	lyx::support::FileMonitor monitor_;
+	mutable support::FileMonitor monitor_;
 };
 
+} // namespace lyx
+
 #endif // RENDERPREVIEW_H