added preferences to control the behaviour of the crop tool

rtgui/options.h

@@ -191,7 +191,6 @@ public:
     int showFilePanelState; // 0: normal, 1: maximized, 2: normal, 3: hidden
     bool showInfo;
     bool mainNBVertical;  // main notebook vertical tabs?
-    int cropPPI;
     bool showClippedHighlights;
     bool showClippedShadows;
     int highlightThreshold;
@@ -261,6 +260,12 @@ public:
 
     bool showFilmStripToolBar;
 
+    // cropping options
+    int cropPPI;
+    enum CropGuidesMode { CROP_GUIDE_NONE, CROP_GUIDE_FRAME, CROP_GUIDE_FULL };
+    CropGuidesMode cropGuides;
+    bool cropAutoFit;    
+
     // Performance options
     Glib::ustring clutsDir;
     int rgbDenoiseThreadLimit; // maximum number of threads for the denoising tool ; 0 = use the maximum available