From aea7341eefa1fd2d1cc7d8ba8530510b5090c53a Mon Sep 17 00:00:00 2001
From: Kenny Root <kenny@the-b.org>
Date: Fri, 12 Feb 2010 05:40:56 +0000
Subject: Extra checking for scrolling wide characters

git-svn-id: https://connectbot.googlecode.com/svn/trunk/connectbot@478 df292f66-193f-0410-a5fc-6d59da041ff2
---
 src/de/mud/terminal/vt320.java | 38 ++++++++++++++++++++++++--------------
 1 file changed, 24 insertions(+), 14 deletions(-)

(limited to 'src')

diff --git a/src/de/mud/terminal/vt320.java b/src/de/mud/terminal/vt320.java
index a09deff..10fd231 100644
--- a/src/de/mud/terminal/vt320.java
+++ b/src/de/mud/terminal/vt320.java
@@ -1774,33 +1774,43 @@ public void setScreenSize(int c, int r, boolean broadcast) {
                 c = map_cp850_unicode(c);
 
               /*if(true || (statusmode == 0)) { */
-              if (insertmode == 1) {
-                if (isWide) {
-                  if (C >= columns - 1) {
-                    C = 0;
-                    if (R == getBottomMargin() || R == rows - 1)
+              if (isWide) {
+                if (C >= columns - 1) {
+                  if (wraparound) {
+                    int bot = rows;
+
+                    // If we're in the scroll region, check against the bottom margin
+                    if (R <= getBottomMargin() && R >= getTopMargin())
+                      bot = getBottomMargin() + 1;
+
+                    if (R < bot - 1)
+                      R++;
+                    else {
+                      if (debug > 3) debug("scrolling due to wrap at " + R);
                       insertLine(R, 1, SCROLL_UP);
-	                else
-	                  R++;
+                    }
+                    C = 0;
+                  } else {
+                    // cursor stays on last wide character.
+                    C = columns - 2;
                   }
+                }
+              }
+
+              if (insertmode == 1) {
+                if (isWide) {
                   insertChar(C++, R, c, attributes | FULLWIDTH);
                   insertChar(C, R, ' ', attributes | FULLWIDTH);
                 } else
                   insertChar(C, R, c, attributes);
               } else {
                 if (isWide) {
-                  if (C >= columns - 1) {
-                    C = 0;
-                    if (R == getBottomMargin() || R == rows - 1)
-                      insertLine(R, 1, SCROLL_UP);
-                    else
-                      R++;
-                  }
                   putChar(C++, R, c, attributes | FULLWIDTH);
                   putChar(C, R, ' ', attributes | FULLWIDTH);
                 } else
                   putChar(C, R, c, attributes);
               }
+
               /*
                 } else {
                 if (insertmode==1) {
-- 
cgit v1.2.3