commit-bot@chromium.org | 1c4c9ef | 2013-08-07 00:07:51 +0000 | [diff] [blame] | 1 | /* |
| 2 | * Copyright 2013 Google Inc. |
| 3 | * |
| 4 | * Use of this source code is governed by a BSD-style license that can be |
| 5 | * found in the LICENSE file. |
| 6 | */ |
| 7 | |
commit-bot@chromium.org | 1c4c9ef | 2013-08-07 00:07:51 +0000 | [diff] [blame] | 8 | #include "SkComposeImageFilter.h" |
robertphillips | 40736ab | 2016-03-08 12:05:37 -0800 | [diff] [blame] | 9 | |
commit-bot@chromium.org | 8b0e8ac | 2014-01-30 18:58:24 +0000 | [diff] [blame] | 10 | #include "SkReadBuffer.h" |
robertphillips | 40736ab | 2016-03-08 12:05:37 -0800 | [diff] [blame] | 11 | #include "SkSpecialImage.h" |
commit-bot@chromium.org | 8b0e8ac | 2014-01-30 18:58:24 +0000 | [diff] [blame] | 12 | #include "SkWriteBuffer.h" |
commit-bot@chromium.org | 1c4c9ef | 2013-08-07 00:07:51 +0000 | [diff] [blame] | 13 | |
commit-bot@chromium.org | 1c4c9ef | 2013-08-07 00:07:51 +0000 | [diff] [blame] | 14 | |
senorblanco | e5e7984 | 2016-03-21 14:51:59 -0700 | [diff] [blame] | 15 | SkRect SkComposeImageFilter::computeFastBounds(const SkRect& src) const { |
robertphillips | 491fb17 | 2016-03-30 12:32:58 -0700 | [diff] [blame] | 16 | SkImageFilter* outer = this->getInput(0); |
| 17 | SkImageFilter* inner = this->getInput(1); |
ajuma | 5788faa | 2015-02-13 09:05:47 -0800 | [diff] [blame] | 18 | |
senorblanco | e5e7984 | 2016-03-21 14:51:59 -0700 | [diff] [blame] | 19 | return outer->computeFastBounds(inner->computeFastBounds(src)); |
ajuma | 5788faa | 2015-02-13 09:05:47 -0800 | [diff] [blame] | 20 | } |
| 21 | |
robertphillips | 2302de9 | 2016-03-24 07:26:32 -0700 | [diff] [blame] | 22 | sk_sp<SkSpecialImage> SkComposeImageFilter::onFilterImage(SkSpecialImage* source, |
| 23 | const Context& ctx, |
| 24 | SkIPoint* offset) const { |
jbroman | 17a6520 | 2016-03-21 08:38:58 -0700 | [diff] [blame] | 25 | // The bounds passed to the inner filter must be filtered by the outer |
| 26 | // filter, so that the inner filter produces the pixels that the outer |
| 27 | // filter requires as input. This matters if the outer filter moves pixels. |
| 28 | SkIRect innerClipBounds; |
robertphillips | 491fb17 | 2016-03-30 12:32:58 -0700 | [diff] [blame] | 29 | innerClipBounds = this->getInput(0)->filterBounds(ctx.clipBounds(), ctx.ctm()); |
jbroman | 17a6520 | 2016-03-21 08:38:58 -0700 | [diff] [blame] | 30 | Context innerContext(ctx.ctm(), innerClipBounds, ctx.cache()); |
ajuma | 5788faa | 2015-02-13 09:05:47 -0800 | [diff] [blame] | 31 | SkIPoint innerOffset = SkIPoint::Make(0, 0); |
robertphillips | 2302de9 | 2016-03-24 07:26:32 -0700 | [diff] [blame] | 32 | sk_sp<SkSpecialImage> inner(this->filterInput(1, source, innerContext, &innerOffset)); |
robertphillips | 40736ab | 2016-03-08 12:05:37 -0800 | [diff] [blame] | 33 | if (!inner) { |
| 34 | return nullptr; |
| 35 | } |
ajuma | 5788faa | 2015-02-13 09:05:47 -0800 | [diff] [blame] | 36 | |
| 37 | SkMatrix outerMatrix(ctx.ctm()); |
| 38 | outerMatrix.postTranslate(SkIntToScalar(-innerOffset.x()), SkIntToScalar(-innerOffset.y())); |
senorblanco | db64af3 | 2015-12-09 10:11:43 -0800 | [diff] [blame] | 39 | SkIRect clipBounds = ctx.clipBounds(); |
| 40 | clipBounds.offset(-innerOffset.x(), -innerOffset.y()); |
reed | 4e23cda | 2016-01-11 10:56:59 -0800 | [diff] [blame] | 41 | Context outerContext(outerMatrix, clipBounds, ctx.cache()); |
robertphillips | 40736ab | 2016-03-08 12:05:37 -0800 | [diff] [blame] | 42 | |
| 43 | SkIPoint outerOffset = SkIPoint::Make(0, 0); |
robertphillips | 2302de9 | 2016-03-24 07:26:32 -0700 | [diff] [blame] | 44 | sk_sp<SkSpecialImage> outer(this->filterInput(0, inner.get(), outerContext, &outerOffset)); |
robertphillips | 40736ab | 2016-03-08 12:05:37 -0800 | [diff] [blame] | 45 | if (!outer) { |
| 46 | return nullptr; |
ajuma | 5788faa | 2015-02-13 09:05:47 -0800 | [diff] [blame] | 47 | } |
| 48 | |
| 49 | *offset = innerOffset + outerOffset; |
robertphillips | 2302de9 | 2016-03-24 07:26:32 -0700 | [diff] [blame] | 50 | return outer; |
commit-bot@chromium.org | 1c4c9ef | 2013-08-07 00:07:51 +0000 | [diff] [blame] | 51 | } |
| 52 | |
senorblanco | e5e7984 | 2016-03-21 14:51:59 -0700 | [diff] [blame] | 53 | SkIRect SkComposeImageFilter::onFilterBounds(const SkIRect& src, const SkMatrix& ctm, |
| 54 | MapDirection direction) const { |
robertphillips | 40736ab | 2016-03-08 12:05:37 -0800 | [diff] [blame] | 55 | SkImageFilter* outer = this->getInput(0); |
| 56 | SkImageFilter* inner = this->getInput(1); |
commit-bot@chromium.org | 1c4c9ef | 2013-08-07 00:07:51 +0000 | [diff] [blame] | 57 | |
senorblanco | e5e7984 | 2016-03-21 14:51:59 -0700 | [diff] [blame] | 58 | return outer->filterBounds(inner->filterBounds(src, ctm, direction), ctm, direction); |
commit-bot@chromium.org | 1c4c9ef | 2013-08-07 00:07:51 +0000 | [diff] [blame] | 59 | } |
| 60 | |
reed | 9fa60da | 2014-08-21 07:59:51 -0700 | [diff] [blame] | 61 | SkFlattenable* SkComposeImageFilter::CreateProc(SkReadBuffer& buffer) { |
| 62 | SK_IMAGEFILTER_UNFLATTEN_COMMON(common, 2); |
robertphillips | 2238c9d | 2016-03-30 13:34:16 -0700 | [diff] [blame^] | 63 | return SkComposeImageFilter::Make(common.getInput(0), common.getInput(1)).release(); |
reed | 9fa60da | 2014-08-21 07:59:51 -0700 | [diff] [blame] | 64 | } |
robertphillips | f3f5bad | 2014-12-19 13:49:15 -0800 | [diff] [blame] | 65 | |
| 66 | #ifndef SK_IGNORE_TO_STRING |
| 67 | void SkComposeImageFilter::toString(SkString* str) const { |
| 68 | SkImageFilter* outer = getInput(0); |
| 69 | SkImageFilter* inner = getInput(1); |
| 70 | |
| 71 | str->appendf("SkComposeImageFilter: ("); |
| 72 | |
| 73 | str->appendf("outer: "); |
| 74 | outer->toString(str); |
| 75 | |
| 76 | str->appendf("inner: "); |
| 77 | inner->toString(str); |
| 78 | |
| 79 | str->appendf(")"); |
| 80 | } |
| 81 | #endif |