Remove duplicate code

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

callbacks.c

@@ -137,60 +137,54 @@ cb_view_vadjustment_value_changed(GtkAdjustment* adjustment, gpointer data)
   statusbar_page_number_update(zathura);
 }
 
-void
-cb_view_hadjustment_changed(GtkAdjustment* adjustment, gpointer data)
+static void
+cb_view_adjustment_changed(GtkAdjustment* adjustment, zathura_t* zathura,
+    bool width)
 {
-  zathura_t* zathura = data;
-  g_return_if_fail(zathura != NULL);
-
-  zathura_adjust_mode_t adjust_mode =
-    zathura_document_get_adjust_mode(zathura->document);
-
   /* Do nothing in index mode */
   if (girara_mode_get(zathura->ui.session) == zathura->modes.index) {
     return;
   }
 
-  /* Don't scroll we're focusing the inputbar. */
+  const zathura_adjust_mode_t adjust_mode =
+    zathura_document_get_adjust_mode(zathura->document);
+
+  /* Don't scroll, we're focusing the inputbar. */
   if (adjust_mode == ZATHURA_ADJUST_INPUTBAR) {
     return;
   }
 
-  /* save the viewport size */
-  unsigned int view_width = (unsigned int)floor(gtk_adjustment_get_page_size(adjustment));
-  zathura_document_set_viewport_width(zathura->document, view_width);
+  /* Save the viewport size */
+  unsigned int size = (unsigned int)floor(gtk_adjustment_get_page_size(adjustment));
+  if (width == true) {
+    zathura_document_set_viewport_width(zathura->document, size);
+  } else {
+    zathura_document_set_viewport_height(zathura->document, size);
+  }
 
   /* reset the adjustment, in case bounds have changed */
-  double ratio = zathura_document_get_position_x(zathura->document);
+  const double ratio = width == true ?
+    zathura_document_get_position_x(zathura->document) :
+    zathura_document_get_position_x(zathura->document);
   zathura_adjustment_set_value_from_ratio(adjustment, ratio);
 }
 
 void
-cb_view_vadjustment_changed(GtkAdjustment* adjustment, gpointer data)
+cb_view_hadjustment_changed(GtkAdjustment* adjustment, gpointer data)
 {
   zathura_t* zathura = data;
   g_return_if_fail(zathura != NULL);
 
-  zathura_adjust_mode_t adjust_mode =
-    zathura_document_get_adjust_mode(zathura->document);
-
-  /* Do nothing in index mode */
-  if (girara_mode_get(zathura->ui.session) == zathura->modes.index) {
-    return;
-  }
-
-  /* Don't scroll we're focusing the inputbar. */
-  if (adjust_mode == ZATHURA_ADJUST_INPUTBAR) {
-    return;
-  }
+  cb_view_adjustment_changed(adjustment, zathura, true);
+}
 
-  /* save the viewport size */
-  unsigned int view_height = (unsigned int)floor(gtk_adjustment_get_page_size(adjustment));
-  zathura_document_set_viewport_height(zathura->document, view_height);
+void
+cb_view_vadjustment_changed(GtkAdjustment* adjustment, gpointer data)
+{
+  zathura_t* zathura = data;
+  g_return_if_fail(zathura != NULL);
 
-  /* reset the adjustment, in case bounds have changed */
-  double ratio = zathura_document_get_position_y(zathura->document);
-  zathura_adjustment_set_value_from_ratio(adjustment, ratio);
+  cb_view_adjustment_changed(adjustment, zathura, false);
 }
 
 void