Properly resize hex viewer on window resize

Author: TellowKrinkle

lib/kaitai/struct/visualizer/hex_viewer.rb

@@ -13,14 +13,18 @@ def initialize(ui, buf, tree = nil)
       @tree = tree
 
       @embedded = !tree.nil?
-      @max_scr_ln = @ui.rows - 3
+      recalc_sizes
 
       @addr = 0
       @scroll_y = 0
       reset_cur
       raise if @cur_x.nil?
     end
 
+    def recalc_sizes
+      @max_scr_ln = @ui.rows - 3
+    end
+
     attr_writer :buf
 
     attr_reader :addr

lib/kaitai/struct/visualizer/tree.rb

@@ -26,6 +26,7 @@ def initialize(ui, st)
 
       @ui.on_resize = proc { |redraw_needed|
         recalc_sizes
+        @hv.recalc_sizes
         redraw      if redraw_needed
         @hv.redraw  if redraw_needed
       }