1/*
2 * Copyright (C) 2012 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 *      http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17#include "Layer.h"
18
19#include "renderstate/RenderState.h"
20
21#include <SkToSRGBColorFilter.h>
22
23namespace android {
24namespace uirenderer {
25
26Layer::Layer(RenderState& renderState, Api api, sk_sp<SkColorFilter> colorFilter, int alpha,
27             SkBlendMode mode)
28        : GpuMemoryTracker(GpuObjectType::Layer)
29        , mRenderState(renderState)
30        , mApi(api)
31        , mColorFilter(colorFilter)
32        , alpha(alpha)
33        , mode(mode) {
34    // TODO: This is a violation of Android's typical ref counting, but it
35    // preserves the old inc/dec ref locations. This should be changed...
36    incStrong(nullptr);
37    buildColorSpaceWithFilter();
38    renderState.registerLayer(this);
39}
40
41Layer::~Layer() {
42    mRenderState.unregisterLayer(this);
43}
44
45void Layer::setColorFilter(sk_sp<SkColorFilter> filter) {
46    if (filter != mColorFilter) {
47        mColorFilter = filter;
48        buildColorSpaceWithFilter();
49    }
50}
51
52void Layer::setDataSpace(android_dataspace dataspace) {
53    if (dataspace != mCurrentDataspace) {
54        mCurrentDataspace = dataspace;
55        buildColorSpaceWithFilter();
56    }
57}
58
59void Layer::buildColorSpaceWithFilter() {
60    sk_sp<SkColorFilter> colorSpaceFilter;
61    sk_sp<SkColorSpace> colorSpace = DataSpaceToColorSpace(mCurrentDataspace);
62    if (colorSpace && !colorSpace->isSRGB()) {
63        colorSpaceFilter = SkToSRGBColorFilter::Make(colorSpace);
64    }
65
66    if (mColorFilter && colorSpaceFilter) {
67        mColorSpaceWithFilter = mColorFilter->makeComposed(colorSpaceFilter);
68    } else if (colorSpaceFilter) {
69        mColorSpaceWithFilter = colorSpaceFilter;
70    } else {
71        mColorSpaceWithFilter = mColorFilter;
72    }
73}
74
75void Layer::postDecStrong() {
76    mRenderState.postDecStrong(this);
77}
78
79};  // namespace uirenderer
80};  // namespace android
81