Issue 4079048: [PDF] Support image alpha channel plus a couple small fixes.

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Issue 4079048: [PDF] Support image alpha channel plus a couple small fixes. (Closed)

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Created:
13 years, 10 months ago by Steve VanDeBogart

Modified:
13 years, 10 months ago

Reviewers:
reed1

CC:
skia-review_googlegroups.com

Base URL:
http://skia.googlecode.com/svn/trunk

Visibility:
Public.

Description

[PDF] Support image alpha channel plus a couple small fixes. Fix bug in rendering paths with cubic segments. Only compress data if the compressed size is smaller than the uncompressed size. Committed: http://code.google.com/p/skia/source/detail?r=747

Patch Set 1 #

Total comments: 1

Created: 13 years, 10 months ago

Download [raw] [tar.bz2]

	Unified diffs	Side-by-side diffs	Stats (+248 lines, -67 lines)			Patch
M	include/pdf/SkPDFImage.h	View	2 chunks	+32 lines, -9 lines	0 comments	Download
M	src/pdf/SkPDFDevice.cpp	View	3 chunks	+5 lines, -1 line	0 comments	Download
M	src/pdf/SkPDFGraphicState.cpp	View	1 chunk	+1 line, -1 line	1 comment	Download
M	src/pdf/SkPDFImage.cpp	View	11 chunks	+205 lines, -55 lines	0 comments	Download
M	src/pdf/SkPDFStream.cpp	View	1 chunk	+5 lines, -1 line	0 comments	Download

Messages

Total messages: 2

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reed1

13 years, 10 months ago (2011-01-29 16:42:55 UTC) #2

Looks like a lot of new code around image extraction. It will be fun to write
some good gm/ tests for this.

LGTM

http://codereview.appspot.com/4079048/diff/1/src/pdf/SkPDFGraphicState.cpp
File src/pdf/SkPDFGraphicState.cpp (right):

http://codereview.appspot.com/4079048/diff/1/src/pdf/SkPDFGraphicState.cpp#ne...
src/pdf/SkPDFGraphicState.cpp:88: new SkPDFScalar(fPaint.getAlpha()/maxAlpha);
This works assuming scalar==float. The more portable way to express this is
either:

SkIntToScalar(fPaint.getAlpha()) / 0xFF;

or

fPaint.getAlpha() * SkScalarInvert(0xFF)

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