From ae6c7381272f84c0fd398f6d3e496f571ba42ec8 Mon Sep 17 00:00:00 2001
From: Simon Tatham <anakin@pobox.com>
Date: Tue, 8 Apr 2008 16:25:39 +0000
Subject: New feature in midend.c which allows us to ask for the number of the
 currently selected preset, if any. I've used this in the GTK front end to
 have the Type menu mark the currently selected menu item. (After considerable
 beating of GTK with sticks, I might add. Grr.) Currently the same UI feature
 is not yet supported on Windows or MacOS, but I hope to do those too at some
 point if it's feasible.

[originally from svn r7980]
---
 midend.c | 29 ++++++++++++++++++++++++++++-
 1 file changed, 28 insertions(+), 1 deletion(-)

(limited to 'midend.c')

diff --git a/midend.c b/midend.c
index 250a479..87df28a 100644
--- a/midend.c
+++ b/midend.c
@@ -31,7 +31,7 @@ struct midend {
     const game *ourgame;
 
     game_params **presets;
-    char **preset_names;
+    char **preset_names, **preset_encodings;
     int npresets, presetsize;
 
     /*
@@ -115,6 +115,7 @@ midend *midend_new(frontend *fe, const game *ourgame,
     me->oldstate = NULL;
     me->presets = NULL;
     me->preset_names = NULL;
+    me->preset_encodings = NULL;
     me->npresets = me->presetsize = 0;
     me->anim_time = me->anim_pos = 0.0F;
     me->flash_time = me->flash_pos = 0.0F;
@@ -186,9 +187,11 @@ void midend_free(midend *me)
 	for (i = 0; i < me->npresets; i++) {
 	    sfree(me->presets[i]);
 	    sfree(me->preset_names[i]);
+	    sfree(me->preset_encodings[i]);
 	}
 	sfree(me->presets);
 	sfree(me->preset_names);
+	sfree(me->preset_encodings);
     }
     if (me->ui)
         me->ourgame->free_ui(me->ui);
@@ -836,10 +839,14 @@ int midend_num_presets(midend *me)
                                       game_params *);
                 me->preset_names = sresize(me->preset_names, me->presetsize,
                                            char *);
+                me->preset_encodings = sresize(me->preset_encodings,
+					       me->presetsize, char *);
             }
 
             me->presets[me->npresets] = preset;
             me->preset_names[me->npresets] = name;
+            me->preset_encodings[me->npresets] =
+		me->ourgame->encode_params(preset, TRUE);;
             me->npresets++;
         }
     }
@@ -890,10 +897,14 @@ int midend_num_presets(midend *me)
                                           game_params *);
                     me->preset_names = sresize(me->preset_names,
                                                me->presetsize, char *);
+                    me->preset_encodings = sresize(me->preset_encodings,
+						   me->presetsize, char *);
                 }
 
                 me->presets[me->npresets] = preset;
                 me->preset_names[me->npresets] = dupstr(name);
+                me->preset_encodings[me->npresets] =
+		    me->ourgame->encode_params(preset, TRUE);
                 me->npresets++;
             }
         }
@@ -910,6 +921,22 @@ void midend_fetch_preset(midend *me, int n,
     *params = me->presets[n];
 }
 
+int midend_which_preset(midend *me)
+{
+    char *encoding = me->ourgame->encode_params(me->params, TRUE);
+    int i, ret;
+
+    ret = -1;
+    for (i = 0; i < me->npresets; i++)
+	if (!strcmp(encoding, me->preset_encodings[i])) {
+	    ret = i;
+	    break;
+	}
+
+    sfree(encoding);
+    return ret;
+}
+
 int midend_wants_statusbar(midend *me)
 {
     return me->ourgame->wants_statusbar;
-- 
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