add a config setting to prevent link_evaluate from changing scale

Signed-off-by: Sebastian Ramacher <sebastian+dev@ramacher.at>

config.c

@@ -199,6 +199,8 @@ config_load_default(zathura_t* zathura)
   bool_value = true;
   girara_setting_add(gsession, "link-hadjust",           &bool_value,  BOOLEAN, false, _("Align link target to the left"), NULL, NULL);
   bool_value = true;
+  girara_setting_add(gsession, "link-zoom",              &bool_value,  BOOLEAN, false, _("Let zoom be changed when following links"), NULL, NULL);
+  bool_value = true;
   girara_setting_add(gsession, "search-hadjust",         &bool_value,  BOOLEAN, false, _("Center result horizontally"), NULL, NULL);
   float_value = 0.5;
   girara_setting_add(gsession, "highlight-transparency", &float_value, FLOAT,   false, _("Transparency for highlighting"), NULL, NULL);

links.c

@@ -122,10 +122,13 @@ zathura_link_evaluate(zathura_t* zathura, zathura_link_t* link)
     return;
   }
 
+  bool link_zoom = true;
+  girara_setting_get(zathura->ui.session, "link-zoom", &link_zoom);
+
   switch (link->type) {
     case ZATHURA_LINK_GOTO_DEST:
       if (link->target.destination_type != ZATHURA_LINK_DESTINATION_UNKNOWN) {
-        if (link->target.scale != 0) {
+        if (link->target.scale != 0 && link_zoom) {
           zathura_document_set_scale(zathura->document, link->target.scale);
         }
 

zathurarc.5.rst

@@ -690,6 +690,13 @@ Defines if scrolling by half or full pages stops at page boundaries.
 * Value type: Boolean
 * Default value: false
 
+link-zoom
+^^^^^^^^^
+En/Disables the hability of changing zoom when following links.
+
+* Value type: Boolean
+* Default value: true
+
 link-hadjust
 ^^^^^^^^^^^^
 En/Disables aligning to the left internal link targets, for example from the index