fix custom overlay id

Author: sulincix

src/tools/icon.cpp

@@ -137,7 +137,7 @@ int get_id_by_overlay(QString foverlay){
         return ISOMETRIC;
     } else if(strcmp(overlay, "music") == 0) {
         return MUSIC;
-    } else if(strcmp(overlay, "music") == 0) {
+    } else if(strcmp(overlay, "custom") == 0) {
         return CUSTOM;
     }
     // Unknown overlay

src/widgets/DrawingWidget.cpp

@@ -206,7 +206,7 @@ class PageStorage {
             cfg += "ratio="+QString::number(board->ratios[i])+"\n";
             cfg += "rotate="+QString::number(board->rotates[i])+"\n";
             cfg += "page="+get_overlay_by_id(loadValue(i).pageType)+"\n";
-            archive_add(QString::number(i)+"/background", values[i].loadValue(-1));
+            archive_add(QString::number(i)+"/background", drawing->getOverlay(i));
             for(int j=1+loadValue(i).removed;j<=loadValue(i).image_count;j++){
                 archive_add(QString::number(i)+"/"+QString::number(j-1-loadValue(i).removed), values[i].loadValue(j));
             }
@@ -225,7 +225,7 @@ class PageStorage {
             QImage image = it.value();
             int page = parts[0].toInt();
             if(path.endsWith("background")){
-                values[page].saveValue(-1, image);
+                drawing->setOverlay(image, page);
                 printf("Load: page bg: %d\n", page);
                 continue;
             }