Finished exported template deletion feature

docs/CHANGES.txt

@@ -6,7 +6,7 @@ Copyright (c) 2002-2023
 Various contributors (see below, and AUTHORS.txt)
 https://tuxpaint.org/
 
-2023.June.7 (0.9.31)
+2023.June.8 (0.9.31)
   * New Magic Tools:
     ----------------
     * Loops - Draw loop-the-loops.
@@ -37,7 +37,7 @@ https://tuxpaint.org/
 
   * Other Improvements:
     -------------------
-    * WIP Saved pictures can, from the Open dialog, be copied into
+    * Saved pictures can, from the Open dialog, be copied into
       the user's templates directory, and used as backgrounds
       for other drawings by selecting it from the New dialog.
       + If the original image has already been exported as a template,
@@ -46,9 +46,7 @@ https://tuxpaint.org/
         - identical file sizes (bytes)
         - identical image dimensions (pixels)
         - identical image data (CRC checksum)
-      + TODO Templates created from saved drawings in Tux Paint will
-        be flagged as such [TBD file sitting alongside it]
-      + TODO Templates created from saved drawings in Tux Paint can
+      + Templates created from saved drawings in Tux Paint can
         be removed via a new "Erase" option that will appear when
         such templates are selected from the "New" dialog. [See below]
       Closes https://sourceforge.net/p/tuxpaint/feature-requests/236/

src/get_fname.h

@@ -1,7 +1,7 @@
 /*
   get_fname.h
 
-  Copyright (c) 2009-2022
+  Copyright (c) 2009-2023
   https://tuxpaint.org/
 
   This program is free software; you can redistribute it and/or modify
@@ -19,8 +19,7 @@
   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
   (See COPYING.txt)
 
-  Last modified: December 11, 2022
-  $Id$
+  Last modified: June 8, 2023
 */
 
 #ifndef GET_FNAME_H
@@ -41,5 +40,8 @@ enum
 
 char *get_fname(const char *const name, int kind);
 
+/* Prefix for templates exported within Tux Paint (via Open dialog),
+   so we can delete them (via New dialog) */
+#define EXPORTED_TEMPLATE_PREFIX "exported"
 
 #endif

src/tuxpaint.c

@@ -22,7 +22,7 @@
   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
   (See COPYING.txt)
 
-  June 14, 2002 - June 6, 2023
+  June 14, 2002 - June 8, 2023
 */
 
 #include "platform.h"
@@ -22533,14 +22533,13 @@ static int do_new_dialog(void)
     if (which_changed)
     {
       erasable = 0;
-      if (!disable_erase)
+
+      if (!disable_erase &&
+          d_places[which] == PLACE_PERSONAL_TEMPLATES_DIR &&
+          strstr(d_names[which], EXPORTED_TEMPLATE_PREFIX) == d_names[which])
       {
-        if (d_places[which] == PLACE_PERSONAL_TEMPLATES_DIR)
-        {
-          /* FIXME: Check for fingerprint that it was one exported from Tux Paint */
         erasable = 1;
       }
-      }
 
       which_changed = 0;
     }
@@ -31699,7 +31698,7 @@ static int export_pict(char *fname, int where, char * orig_fname)
       t = time(NULL); 
       strftime(timestamp, sizeof(timestamp), "%Y%m%d%H%M%S", localtime(&t)); 
       pict_fname = (char *) malloc(sizeof(char) * len);
-      snprintf(pict_fname, len, "%s/%s-%s.png", dir, orig_fname, timestamp);
+      snprintf(pict_fname, len, "%s/%s-%s-%s.png", dir, EXPORTED_TEMPLATE_PREFIX, orig_fname, timestamp);
     }
 
     free(dir);