From b18af238981b8fa045019fdaa9dc6be02a714bc2 Mon Sep 17 00:00:00 2001
From: Nikolay Pultsin <geometer@fbreader.org>
Date: Thu, 13 Dec 2012 01:41:02 +0400
Subject: [PATCH] fixed backward scrolling with no animation

---
 ChangeLog                                               | 1 +
 src/org/geometerplus/zlibrary/text/view/ZLTextView.java | 9 +++++++--
 2 files changed, 8 insertions(+), 2 deletions(-)

diff --git a/ChangeLog b/ChangeLog
index a4f9420f1..72aae38c0 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -2,6 +2,7 @@
 * Added Bulgarian translation (by Ники Арсов)
 * Updated Dutch translation (by Frank Fesevur)
 * Plural forms in Belarusian and Czech translations
+* Fixed issue with rendering during backward page turning with no amimation
 
 ===== 1.6.8 (Nov 30, 2012) =====
 * Fixed NPE during adding a custom catalog with no search link
diff --git a/src/org/geometerplus/zlibrary/text/view/ZLTextView.java b/src/org/geometerplus/zlibrary/text/view/ZLTextView.java
index f8cb67e57..6c9e916dc 100644
--- a/src/org/geometerplus/zlibrary/text/view/ZLTextView.java
+++ b/src/org/geometerplus/zlibrary/text/view/ZLTextView.java
@@ -1245,6 +1245,7 @@ public abstract class ZLTextView extends ZLTextViewBase {
 		if (page.PaintState == PaintStateEnum.NOTHING_TO_PAINT || page.PaintState == PaintStateEnum.READY) {
 			return;
 		}
+		final int oldState = page.PaintState;
 
 		final HashMap<ZLTextLineInfo,ZLTextLineInfo> cache = myLineInfoCache;
 		for (ZLTextLineInfo info : page.LineInfos) {
@@ -1344,8 +1345,12 @@ public abstract class ZLTextView extends ZLTextViewBase {
 		myLineInfoCache.clear();
 
 		if (page == myCurrentPage) {
-			myPreviousPage.reset();
-			myNextPage.reset();
+			if (oldState != PaintStateEnum.START_IS_KNOWN) {
+				myPreviousPage.reset();
+			}
+			if (oldState != PaintStateEnum.END_IS_KNOWN) {
+				myNextPage.reset();
+			}
 		}
 	}