Fix #94 - LYX forward DVI search

git-svn-id: svn://svn.lyx.org/lyx/lyx-devel/trunk@34139 a592a061-630c-0410-9148-cb99ea01b6c8

src/FuncCode.h

@@ -445,6 +445,7 @@ enum FuncCode
 	LFUN_SPELLING_IGNORE,           // spitz 20100118
 	// 345
 	LFUN_PREVIEW_INSERT,            // vfr, 20100328
+	LFUN_FORWARD_SEARCH,
 
 	LFUN_LASTACTION                 // end of the table
 };

src/LyXAction.cpp

@@ -2824,6 +2824,23 @@ void LyXAction::init()
  * \endvar
  */
 		{ LFUN_SERVER_GOTO_FILE_ROW, "server-goto-file-row", ReadOnly | NoBuffer, System },
+/*!
+ * \var lyx::FuncCode lyx::LFUN_FORWARD_SEARCH
+ * \li Action: Sets the cursor position in the previewed (e.g. dvi) file based on the row
+               number in LyX window.
+ * \li Notion: The external program used for forward search call can be specified in
+               \\forward_search RC setting. By default its value is\n
+	       "xdvi -sourceposition $$n:$$t $$o"\n
+	       The values replaced in the call: $$n for row number, $$t for
+	       exported temporary .tex file, $$o exported output file, either
+	       dvi or pdf, depending on the argument of #LFUN_FORWARD_SEARCH.
+ * \li Syntax: forward-search [dvi|pdf]
+ * \li Params: By default dvi route is taken.
+ * \li Origin: sanda, 14 Apr 2010
+ * \endvar
+ */
+		{ LFUN_FORWARD_SEARCH, "forward-search", ReadOnly, System },
+
 /*!
  * \var lyx::FuncCode lyx::LFUN_SERVER_NOTIFY
  * \li Action: Sends notify message about the last key-sequence to client.

src/LyXRC.cpp

@@ -94,6 +94,7 @@ LexerKeyword lyxrcTags[] = {
 	{ "\\example_path", LyXRC::RC_EXAMPLEPATH },
 	{ "\\font_encoding", LyXRC::RC_FONT_ENCODING },
 	{ "\\format", LyXRC::RC_FORMAT },
+	{ "\\forward_search", LyXRC::RC_FORWARD_SEARCH },
 	{ "\\fullscreen_limit", LyXRC::RC_FULL_SCREEN_LIMIT },
 	{ "\\fullscreen_menubar", LyXRC::RC_FULL_SCREEN_MENUBAR },
 	{ "\\fullscreen_scrollbar", LyXRC::RC_FULL_SCREEN_SCROLLBAR },
@@ -326,6 +327,7 @@ void LyXRC::setDefaults()
 	user_email = to_utf8(support::user_email());
 	open_buffers_in_tabs = true;
 	single_close_tab_button = false;
+	forward_search = "xdvi -sourceposition $$n:$$t $$o";
 
 	// Fullscreen settings
 	full_screen_limit = false;
@@ -1156,6 +1158,9 @@ int LyXRC::read(Lexer & lexrc)
 		case RC_SINGLE_CLOSE_TAB_BUTTON:
 			lexrc >> single_close_tab_button;
 			break;
+		case RC_FORWARD_SEARCH:
+			lexrc >> forward_search;
+			break;
 
 		// Obsoteted in 1.4.0
 		case RC_USETEMPDIR:
@@ -1840,6 +1845,8 @@ void LyXRC::write(ostream & os, bool ignore_system_lyxrc, string const & name) c
 			   << convert<string>(open_buffers_in_tabs)
 			   << '\n';
 		}
+		if (tag != RC_LAST)
+			break;
 	case RC_SINGLE_CLOSE_TAB_BUTTON:
 		if (ignore_system_lyxrc ||
 		    single_close_tab_button != system_lyxrc.single_close_tab_button) {
@@ -1849,6 +1856,13 @@ void LyXRC::write(ostream & os, bool ignore_system_lyxrc, string const & name) c
 		}
 		if (tag != RC_LAST)
 			break;
+	case RC_FORWARD_SEARCH:
+		if (ignore_system_lyxrc ||
+		    forward_search != system_lyxrc.forward_search) {
+			os << "\\forward_search " << forward_search << '\n';
+		}
+		if (tag != RC_LAST)
+			break;
 
 	os << "\n#\n"
 			<< "# COLOR SECTION ###################################\n"
@@ -2801,6 +2815,7 @@ void actOnUpdatedPrefs(LyXRC const & lyxrc_orig, LyXRC const & lyxrc_new)
 	case LyXRC::RC_VISUAL_CURSOR:
 	case LyXRC::RC_VIEWER:
 	case LyXRC::RC_VIEWER_ALTERNATIVES:
+	case LyXRC::RC_FORWARD_SEARCH:
 	case LyXRC::RC_LAST:
 		break;
 	}

src/LyXRC.h

@@ -78,6 +78,7 @@ public:
 		RC_EXAMPLEPATH,
 		RC_FONT_ENCODING,
 		RC_FORMAT,
+		RC_FORWARD_SEARCH,
 		RC_FULL_SCREEN_LIMIT,
 		RC_FULL_SCREEN_SCROLLBAR,
 		RC_FULL_SCREEN_TABBAR,
@@ -490,6 +491,8 @@ public:
 	bool open_buffers_in_tabs;
 	///
 	bool single_close_tab_button;
+	///
+	std::string forward_search;
 };
 
 

src/TexRow.cpp

@@ -68,6 +68,9 @@ bool TexRow::getIdFromRow(int row, int & id, int & pos) const
 int TexRow::getRowFromIdPos(int id, int pos) const
 {
 	bool foundid = false;
+	//lyxerr<<"Table:";
+	//for (unsigned int i=0; i<rowlist.size(); i++)
+	//lyxerr<<i<<" (id,pos):\t"<<rowlist[i].id()<<" "<<rowlist[i].pos()<<"\n";
 
 	// this loop finds the last *nonempty* row with the same id
 	// and position <= pos

src/frontends/qt4/GuiView.cpp

@@ -57,6 +57,7 @@
 #include "LyXVC.h"
 #include "Paragraph.h"
 #include "SpellChecker.h"
+#include "TexRow.h"
 #include "TextClass.h"
 #include "Text.h"
 #include "Toolbars.h"
@@ -1656,6 +1657,7 @@ bool GuiView::getStatus(FuncRequest const & cmd, FuncStatus & flag)
 		break;
 
 	case LFUN_SERVER_GOTO_FILE_ROW:
+	case LFUN_FORWARD_SEARCH:
 		break;
 
 	default:
@@ -3221,6 +3223,30 @@ void GuiView::dispatch(FuncRequest const & cmd, DispatchResult & dr)
 			goToFileRow(to_utf8(cmd.argument()));
 			break;
 
+		case LFUN_FORWARD_SEARCH: {
+			string out_type="dvi";
+			if (argument == "pdf")
+				out_type = "pdf";
+
+			FileName const path(doc_buffer->temppath());
+			support::PathChanger p(path);
+			string const texname = doc_buffer->latexName();
+			string const outname = support::changeExtension(doc_buffer->latexName(), out_type);
+
+			int row = doc_buffer->texrow().getRowFromIdPos(bv->cursor().paragraph().id(), bv->cursor().pos());
+			if (!row)
+				break;
+			string texrow = convert<string>(row);
+
+			string command = lyxrc.forward_search;
+			command = subst(command, "$$n", texrow);
+			command = subst(command, "$$t", texname);
+			command = subst(command, "$$o", outname);
+
+			Systemcall one;
+			one.startscript(Systemcall::Wait, command);
+			break;
+		}
 		default:
 			dr.dispatched(false);
 			break;