From caf4951b8417158f9ac16614a15383fae2cbb3fd Mon Sep 17 00:00:00 2001
From: Viktor Verebelyi <vviktor2@gmail.com>
Date: Wed, 7 Oct 2020 18:34:39 +0100
Subject: Add:core:navit_zoom_level

---
 navit/navit.c | 25 +++++++++++++++++++++++++
 navit/navit.h |  1 +
 2 files changed, 26 insertions(+)

diff --git a/navit/navit.c b/navit/navit.c
index c6e467a22..871605448 100644
--- a/navit/navit.c
+++ b/navit/navit.c
@@ -778,6 +778,31 @@ static void navit_autozoom(struct navit *this_, struct coord *center, int speed,
         navit_scale(this_, (long)new_scale, &pc, 0);
 }
 
+/**
+ * Change the current zoom level, zooming closer to the ground
+ *
+ * @param navit The navit instance
+ * @param level The zoom level between 0-18
+ * @param p The invariant point (if set to NULL, default to center)
+ * @returns nothing
+ */
+
+void navit_zoom_level(struct navit *this_, int level, struct point *p){
+    if(level > 18){
+        level = 18;
+    }
+    if (level < 0){
+        level = 0;
+    }
+
+    long scale=2<<level;
+
+    if(this_->autozoom_active) {
+        this_->autozoom_paused = 10;
+    }
+    navit_scale(this_, scale, p, 1);
+}
+
 /**
  * Change the current zoom level, zooming closer to the ground
  *
diff --git a/navit/navit.h b/navit/navit.h
index e0a127074..529bfb3a5 100644
--- a/navit/navit.h
+++ b/navit/navit.h
@@ -70,6 +70,7 @@ void navit_ignore_graphics_events(struct navit *this_, int ignore);
 void navit_set_timeout(struct navit *this_);
 int navit_handle_button(struct navit *this_, int pressed, int button, struct point *p, struct callback *popup_callback);
 void navit_handle_motion(struct navit *this_, struct point *p);
+void navit_zoom_level(struct navit *this_, int level, struct point *p);
 void navit_zoom_in(struct navit *this_, int factor, struct point *p);
 void navit_zoom_out(struct navit *this_, int factor, struct point *p);
 void navit_zoom_in_cursor(struct navit *this_, int factor);
-- 
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