(Marco Morandini): make the list of loadable graphics formats dynamic.

git-svn-id: svn://svn.lyx.org/lyx/lyx-devel/trunk@4029 a592a061-630c-0410-9148-cb99ea01b6c8

src/frontends/controllers/ControlGraphics.C

@@ -26,6 +26,7 @@
 
 #include "helper_funcs.h"
 
+#include "converter.h"
 #include "buffer.h"
 #include "BufferView.h"
 #include "Dialogs.h"
@@ -34,6 +35,7 @@
 #include "lyxrc.h"
 
 #include "graphics/GraphicsCache.h"
+#include "graphics/GraphicsConverter.h"
 
 #include "insets/insetgraphics.h"
 #include "insets/insetgraphicsParams.h"
@@ -48,13 +50,52 @@ using std::make_pair;
 using std::ifstream;
 
 namespace {
+using std::vector;
 
 // FIXME: currently we need the second '|' to prevent mis-interpretation!
 // All supported graphic formats with their file-extension and the
 // gzip-ext for zipped (e)ps-files.
-string const grfx_pattern = 
-	"*.(agr|bmp|eps|epsi|fits|gif|jpg|obj|pdf|pbm|pgm|png|"
-	"ppm|ps|tif|tiff|xbm|xpm|xwd|gz)|";		
+// string const grfx_pattern = 
+// 	"*.(agr|bmp|eps|epsi|fits|gif|jpg|obj|pdf|pbm|pgm|png|"
+// 	"ppm|ps|tif|tiff|xbm|xpm|xwd|gz)|";
+vector<string> const grfx_formats()
+{
+	vector<string> native_formats = grfx::GCache::get().loadableFormats();
+	// We can load any format that can be loaded natively together with
+	// those that can be converted to one of these native formats.
+	vector<string> browsable_formats = native_formats;
+	
+	grfx::GConverter const & gconverter = grfx::GConverter::get();
+	
+	vector<string>::const_iterator to_end = native_formats.end();
+
+	Formats::const_iterator from_it = formats.begin();
+	Formats::const_iterator from_end = formats.end();
+	for (; from_it != from_end; ++from_it) {
+		string const from = from_it->name();
+		
+		vector<string>::const_iterator to_it = native_formats.begin();
+		for (; to_it != to_end; ++to_it) {
+			if (gconverter.isReachable(from, *to_it)) {
+				browsable_formats.push_back(from);
+				break;
+			}
+		}
+	}
+
+	browsable_formats.push_back("gz");
+
+	return browsable_formats;
+}
+
+
+string const xforms_pattern()
+{
+	vector<string> const browsable_formats = grfx_formats();
+	string const answer = 
+		"*.(" + getStringFromVector(browsable_formats, "|") +")|";
+	return answer;
+}
 
 }
 
@@ -113,7 +154,7 @@ string const ControlGraphics::Browse(string const & in_name)
 	pair<string, string> dir2(_("Documents|#o#O"), string(lyxrc.document_path));
 	// Show the file browser dialog
 	return browseRelFile(&lv_, in_name, lv_.buffer()->filePath(),
-			     title, ::grfx_pattern, dir1, dir2);
+			     title, ::xforms_pattern(), dir1, dir2);
 }
 
 

src/graphics/ChangeLog

@@ -1,3 +1,9 @@
+2002-04-19  Marco Morandini <morandini@aero.polimi.it>
+
+	* GraphicsCache.[Ch] (loadableFormats): new method. A wrapper for
+	GImage::loadableFormats() that ensures that the signal is connected
+	to the derived class' method.
+
 2002-04-18  Lars Gullik Bjønnes  <larsbj@birdstep.com>
 
 	* GraphicsImageXPM.C (convertTo7chars): drop all conversions and

src/graphics/GraphicsCache.C

@@ -185,5 +185,10 @@ unsigned int GCache::raw_height(string const & filename) const
 	return it->second->raw_height();
 }
 
+
+std::vector<string> GCache::loadableFormats() const {
+	return GImage::loadableFormats();
+}
+
 } // namespace grfx
 

src/graphics/GraphicsCache.h

@@ -23,6 +23,7 @@
 
 #include "GraphicsTypes.h"
 #include <map>
+#include <vector>
 #include "LString.h"
 #include <boost/utility.hpp>
 
@@ -71,6 +72,8 @@ public:
 	unsigned int raw_width(string const & filename) const;
 	///
 	unsigned int raw_height(string const & filename) const;
+	///
+	std::vector<string> loadableFormats() const;
 	
 private:
 	/** Make the c-tor private so we can control how many objects