From 1192c463db34e3f69be4d9ef976246ce265143a3 Mon Sep 17 00:00:00 2001
From: Alexandra Cherdantseva <neluhus.vagus@gmail.com>
Date: Fri, 7 Sep 2018 13:07:35 +0300
Subject: QImageWriter/QPNGHandler: Quality option should be CompressionRatio

Wrong option was used to set zlib compression level for png
setCompression with negative value uses default compression
setCompression with value between 0-100 converts to zlib compression level 0-9
setCompression with positive value overrides Quality option

Change-Id: Ic4b048a1e30d6940019c2a00a6c24d0c11e3f821
Reviewed-by: Alexandra Cherdantseva <neluhus.vagus@gmail.com>
Reviewed-by: Eirik Aavitsland <eirik.aavitsland@qt.io>
---
 tests/auto/gui/image/qimagereader/tst_qimagereader.cpp | 1 +
 1 file changed, 1 insertion(+)

(limited to 'tests/auto/gui/image/qimagereader/tst_qimagereader.cpp')

diff --git a/tests/auto/gui/image/qimagereader/tst_qimagereader.cpp b/tests/auto/gui/image/qimagereader/tst_qimagereader.cpp
index aa9a990fef..c2ec5b8925 100644
--- a/tests/auto/gui/image/qimagereader/tst_qimagereader.cpp
+++ b/tests/auto/gui/image/qimagereader/tst_qimagereader.cpp
@@ -1603,6 +1603,7 @@ void tst_QImageReader::supportsOption_data()
                          << (QIntList() << QImageIOHandler::Gamma
                               << QImageIOHandler::Description
                               << QImageIOHandler::Quality
+                              << QImageIOHandler::CompressionRatio
                               << QImageIOHandler::Size
                               << QImageIOHandler::ScaledSize);
 }
-- 
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