commit fdb47571a3b5e72469b67de44e32ac14d9352ab4
author msarett <msarett@google.com> Tue Oct 13 12:50:14 2015 -0700
committer Commit bot <commit-bot@chromium.org> Tue Oct 13 12:50:14 2015 -0700
tree cc98e7952e756c3c8825e7f9af3b280b3fc7b449
parent eb85b8321bc917169ba26c8fce76b64d2e3dfe81

Add subsetting to SkScanlineDecoder

This CL allows the SkScanlineDecoder to decode partial
scanlines.

This is a first step in efficiently implementing subsetting
in SkScaledCodec.

BUG=skia:4209

Review URL: https://codereview.chromium.org/1390213002

src/codec/SkWebpCodec.cpp

diff --git a/src/codec/SkWebpCodec.cpp b/src/codec/SkWebpCodec.cpp
index a0fab0a..3c61b93 100644
--- a/src/codec/SkWebpCodec.cpp
+++ b/src/codec/SkWebpCodec.cpp
@@ -144,8 +144,8 @@
         return false;
     }
 
-    SkIRect bounds = SkIRect::MakeSize(this->getInfo().dimensions());
-    if (!desiredSubset->intersect(bounds)) {
+    SkIRect dimensions  = SkIRect::MakeSize(this->getInfo().dimensions());
+    if (!dimensions.contains(*desiredSubset)) {
         return false;
     }