From 20e9f3e80a9ea446096dd86b5a9fceb4ab43c520 Mon Sep 17 00:00:00 2001
From: hius07 <62179190+hius07@users.noreply.github.com>
Date: Sat, 25 Dec 2021 23:56:24 +0200
Subject: [PATCH] textviewer: fix refresh (#8576)

When TextViewer is showing up, it causes screen refresh of the rectangle from the upper left corner of the screen (0,0) till the lower right corner of the TextViewer window (the result of `combine`).
So when the TextViewer is not full-screen, left and upper parts of the screen are refreshed.
This unpleasent screen flashing can be seen, for exampe, when showing book description from the Book information page, or when calling the clipboard (long-press on the text input box).
Let's show the TextViewer in a usual way, as (almost) all other widgets do.
---
 frontend/ui/widget/textviewer.lua | 5 +----
 1 file changed, 1 insertion(+), 4 deletions(-)

diff --git a/frontend/ui/widget/textviewer.lua b/frontend/ui/widget/textviewer.lua
index 0767fe04e..b6e1a92d6 100644
--- a/frontend/ui/widget/textviewer.lua
+++ b/frontend/ui/widget/textviewer.lua
@@ -63,7 +63,6 @@ local TextViewer = InputContainer:new{
 }
 
 function TextViewer:init()
-    local orig_dimen = self.frame and self.frame.dimen or Geom:new{}
     -- calculate window dimension
     self.align = "center"
     self.region = Geom:new{
@@ -221,9 +220,7 @@ function TextViewer:init()
         self.movable,
     }
     UIManager:setDirty(self, function()
-        local update_region = self.frame.dimen:combine(orig_dimen)
-        logger.dbg("update region", update_region)
-        return "partial", update_region
+        return "partial", self.frame.dimen
     end)
 end