Fix bug #6134: Reload context menu for graphics inset.

This shouldn't be necessary, but sometimes it is.

git-svn-id: svn://svn.lyx.org/lyx/lyx-devel/trunk@31014 a592a061-630c-0410-9148-cb99ea01b6c8

lib/ui/stdcontext.inc

@@ -358,6 +358,7 @@ Menuset
 
 	Menu "context-graphics"
 		Item "Settings...|S" "inset-settings"
+		Item "Reload...|U" "graphics-reload"
 		Separator
 		Item "Edit Externally...|x" "inset-edit"
 		Separator

src/FuncCode.h

@@ -440,6 +440,7 @@ enum FuncCode
 	// 340
 	LFUN_BRANCHES_RENAME,           // spitz 20090709
 	LFUN_BUFFER_CLOSE_ALL,          // vfr 20090806
+	LFUN_GRAPHICS_RELOAD,           // vfr 20090810
 
 	LFUN_LASTACTION                 // end of the table
 };

src/LyXAction.cpp

@@ -3403,6 +3403,16 @@ void LyXAction::init()
  */
 		{ LFUN_SECTION_SELECT, "section-select", ReadOnly, Edit },
 
+/*!
+ * \var lyx::FuncCode lyx::LFUN_GRAPHICS_RELOAD
+ * \li Action: Reloads the image if necessary.
+ * \li Syntax: graphics-reload
+ * \li Origin: vfr, 10 Aug 2009
+ * \endvar
+ */
+		{ LFUN_GRAPHICS_RELOAD, "graphics-reload", ReadOnly | AtPoint, Edit },
+
+
 		{ LFUN_NOACTION, "", Noop, Hidden }
 #ifndef DOXYGEN_SHOULD_SKIP_THIS
 	};

src/graphics/GraphicsCacheItem.cpp

@@ -349,6 +349,8 @@ static string const findTargetFormat(string const & from)
 bool CacheItem::Impl::tryDisplayFormat(FileName & filename, string & from)
 {
 	// First, check that the file exists!
+	// force a refresh.
+	filename_.lastModified();
 	if (!filename_.isReadableFile()) {
 		if (status_ != ErrorNoFile) {
 			status_ = ErrorNoFile;

src/graphics/GraphicsLoader.cpp

@@ -279,6 +279,12 @@ void Loader::startLoading() const
 }
 
 
+void Loader::reload() const 
+{
+	pimpl_->cached_item_->startLoading();
+}
+
+
 void Loader::startMonitoring() const
 {
 	if (!pimpl_->cached_item_.get())

src/graphics/GraphicsLoader.h

@@ -68,6 +68,10 @@ public:
 	 */
 	void startLoading() const;
 
+	/** Tries to reload the image. 
+	 */
+	void reload() const;
+
 	/** Monitor any changes to the file.
 	 *  There is no point monitoring the file before startLoading() is
 	 *  invoked.

src/insets/InsetGraphics.cpp

@@ -216,6 +216,10 @@ void InsetGraphics::doDispatch(Cursor & cur, FuncRequest & cmd)
 		cur.bv().updateDialog("graphics", params2string(params(), buffer()));
 		break;
 
+	case LFUN_GRAPHICS_RELOAD:
+		graphic_->reload();
+		break;
+
 	default:
 		Inset::doDispatch(cur, cmd);
 		break;
@@ -230,6 +234,7 @@ bool InsetGraphics::getStatus(Cursor & cur, FuncRequest const & cmd,
 	case LFUN_INSET_EDIT:
 	case LFUN_INSET_MODIFY:
 	case LFUN_INSET_DIALOG_UPDATE:
+	case LFUN_GRAPHICS_RELOAD:
 		flag.setEnabled(true);
 		return true;
 

src/insets/RenderGraphic.cpp

@@ -52,6 +52,10 @@ RenderBase * RenderGraphic::clone(Inset const * inset) const
 	return new RenderGraphic(*this, inset);
 }
 
+void RenderGraphic::reload() const
+{
+	loader_.reload();
+}
 
 void RenderGraphic::update(graphics::Params const & params)
 {

src/insets/RenderGraphic.h

@@ -35,6 +35,8 @@ public:
 
 	/// Refresh the info about which file to display and how to display it.
 	void update(graphics::Params const & params);
+	/// Reloads the image if necessary
+	void reload() const;
 
 	/// equivalent to dynamic_cast
 	virtual RenderGraphic * asGraphic() { return this; }