xref: /aosp_15_r20/frameworks/base/libs/hwui/DamageAccumulator.h (revision d57664e9bc4670b3ecf6748a746a57c557b6bc9e)
1*d57664e9SAndroid Build Coastguard Worker /*
2*d57664e9SAndroid Build Coastguard Worker  * Copyright (C) 2014 The Android Open Source Project
3*d57664e9SAndroid Build Coastguard Worker  *
4*d57664e9SAndroid Build Coastguard Worker  * Licensed under the Apache License, Version 2.0 (the "License");
5*d57664e9SAndroid Build Coastguard Worker  * you may not use this file except in compliance with the License.
6*d57664e9SAndroid Build Coastguard Worker  * You may obtain a copy of the License at
7*d57664e9SAndroid Build Coastguard Worker  *
8*d57664e9SAndroid Build Coastguard Worker  *      http://www.apache.org/licenses/LICENSE-2.0
9*d57664e9SAndroid Build Coastguard Worker  *
10*d57664e9SAndroid Build Coastguard Worker  * Unless required by applicable law or agreed to in writing, software
11*d57664e9SAndroid Build Coastguard Worker  * distributed under the License is distributed on an "AS IS" BASIS,
12*d57664e9SAndroid Build Coastguard Worker  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13*d57664e9SAndroid Build Coastguard Worker  * See the License for the specific language governing permissions and
14*d57664e9SAndroid Build Coastguard Worker  * limitations under the License.
15*d57664e9SAndroid Build Coastguard Worker  */
16*d57664e9SAndroid Build Coastguard Worker #ifndef DAMAGEACCUMULATOR_H
17*d57664e9SAndroid Build Coastguard Worker #define DAMAGEACCUMULATOR_H
18*d57664e9SAndroid Build Coastguard Worker 
19*d57664e9SAndroid Build Coastguard Worker #include <cutils/compiler.h>
20*d57664e9SAndroid Build Coastguard Worker #include <utils/LinearAllocator.h>
21*d57664e9SAndroid Build Coastguard Worker 
22*d57664e9SAndroid Build Coastguard Worker #include <SkMatrix.h>
23*d57664e9SAndroid Build Coastguard Worker #include <SkRect.h>
24*d57664e9SAndroid Build Coastguard Worker #include <effects/StretchEffect.h>
25*d57664e9SAndroid Build Coastguard Worker 
26*d57664e9SAndroid Build Coastguard Worker #include "utils/Macros.h"
27*d57664e9SAndroid Build Coastguard Worker 
28*d57664e9SAndroid Build Coastguard Worker // Smaller than INT_MIN/INT_MAX because we offset these values
29*d57664e9SAndroid Build Coastguard Worker // and thus don't want to be adding offsets to INT_MAX, that's bad
30*d57664e9SAndroid Build Coastguard Worker #define DIRTY_MIN (-0x7ffffff - 1)
31*d57664e9SAndroid Build Coastguard Worker #define DIRTY_MAX (0x8000000)
32*d57664e9SAndroid Build Coastguard Worker 
33*d57664e9SAndroid Build Coastguard Worker namespace android {
34*d57664e9SAndroid Build Coastguard Worker namespace uirenderer {
35*d57664e9SAndroid Build Coastguard Worker 
36*d57664e9SAndroid Build Coastguard Worker struct DirtyStack;
37*d57664e9SAndroid Build Coastguard Worker class RenderNode;
38*d57664e9SAndroid Build Coastguard Worker class Matrix4;
39*d57664e9SAndroid Build Coastguard Worker 
40*d57664e9SAndroid Build Coastguard Worker class DamageAccumulator {
41*d57664e9SAndroid Build Coastguard Worker     PREVENT_COPY_AND_ASSIGN(DamageAccumulator);
42*d57664e9SAndroid Build Coastguard Worker 
43*d57664e9SAndroid Build Coastguard Worker public:
44*d57664e9SAndroid Build Coastguard Worker     DamageAccumulator();
45*d57664e9SAndroid Build Coastguard Worker     // mAllocator will clean everything up for us, no need for a dtor
46*d57664e9SAndroid Build Coastguard Worker 
47*d57664e9SAndroid Build Coastguard Worker     // Push a transform node onto the stack. This should be called prior
48*d57664e9SAndroid Build Coastguard Worker     // to any dirty() calls. Subsequent calls to dirty()
49*d57664e9SAndroid Build Coastguard Worker     // will be affected by the transform when popTransform() is called.
50*d57664e9SAndroid Build Coastguard Worker     void pushTransform(const RenderNode* transform);
51*d57664e9SAndroid Build Coastguard Worker     void pushTransform(const Matrix4* transform);
52*d57664e9SAndroid Build Coastguard Worker 
53*d57664e9SAndroid Build Coastguard Worker     // Pops a transform node from the stack, propagating the dirty rect
54*d57664e9SAndroid Build Coastguard Worker     // up to the parent node. Returns the IDamageTransform that was just applied
55*d57664e9SAndroid Build Coastguard Worker     void popTransform();
56*d57664e9SAndroid Build Coastguard Worker 
57*d57664e9SAndroid Build Coastguard Worker     void dirty(float left, float top, float right, float bottom);
58*d57664e9SAndroid Build Coastguard Worker 
59*d57664e9SAndroid Build Coastguard Worker     // Returns the current dirty area, *NOT* transformed by pushed transforms
60*d57664e9SAndroid Build Coastguard Worker     void peekAtDirty(SkRect* dest) const;
61*d57664e9SAndroid Build Coastguard Worker 
62*d57664e9SAndroid Build Coastguard Worker     void computeCurrentTransform(Matrix4* outMatrix) const;
63*d57664e9SAndroid Build Coastguard Worker 
64*d57664e9SAndroid Build Coastguard Worker     SkRect computeClipAndTransform(const SkRect& bounds, Matrix4* outMatrix) const;
65*d57664e9SAndroid Build Coastguard Worker 
66*d57664e9SAndroid Build Coastguard Worker     void finish(SkRect* totalDirty);
67*d57664e9SAndroid Build Coastguard Worker 
68*d57664e9SAndroid Build Coastguard Worker     struct StretchResult {
69*d57664e9SAndroid Build Coastguard Worker         /**
70*d57664e9SAndroid Build Coastguard Worker          * Stretch parameters configured on the stretch container
71*d57664e9SAndroid Build Coastguard Worker          */
72*d57664e9SAndroid Build Coastguard Worker         const StretchEffect* stretchEffect;
73*d57664e9SAndroid Build Coastguard Worker 
74*d57664e9SAndroid Build Coastguard Worker         /**
75*d57664e9SAndroid Build Coastguard Worker          * Bounds of the stretching container
76*d57664e9SAndroid Build Coastguard Worker          */
77*d57664e9SAndroid Build Coastguard Worker         const SkRect parentBounds;
78*d57664e9SAndroid Build Coastguard Worker 
79*d57664e9SAndroid Build Coastguard Worker         /**
80*d57664e9SAndroid Build Coastguard Worker          * Width of the stretch container
81*d57664e9SAndroid Build Coastguard Worker          */
82*d57664e9SAndroid Build Coastguard Worker         const float width;
83*d57664e9SAndroid Build Coastguard Worker 
84*d57664e9SAndroid Build Coastguard Worker         /**
85*d57664e9SAndroid Build Coastguard Worker          * Height of the stretch container
86*d57664e9SAndroid Build Coastguard Worker          */
87*d57664e9SAndroid Build Coastguard Worker         const float height;
88*d57664e9SAndroid Build Coastguard Worker     };
89*d57664e9SAndroid Build Coastguard Worker 
90*d57664e9SAndroid Build Coastguard Worker     [[nodiscard]] StretchResult findNearestStretchEffect() const;
91*d57664e9SAndroid Build Coastguard Worker 
92*d57664e9SAndroid Build Coastguard Worker private:
93*d57664e9SAndroid Build Coastguard Worker     void pushCommon();
94*d57664e9SAndroid Build Coastguard Worker     void applyMatrix4Transform(DirtyStack* frame);
95*d57664e9SAndroid Build Coastguard Worker     void applyRenderNodeTransform(DirtyStack* frame);
96*d57664e9SAndroid Build Coastguard Worker 
97*d57664e9SAndroid Build Coastguard Worker     LinearAllocator mAllocator;
98*d57664e9SAndroid Build Coastguard Worker     DirtyStack* mHead;
99*d57664e9SAndroid Build Coastguard Worker };
100*d57664e9SAndroid Build Coastguard Worker 
101*d57664e9SAndroid Build Coastguard Worker } /* namespace uirenderer */
102*d57664e9SAndroid Build Coastguard Worker } /* namespace android */
103*d57664e9SAndroid Build Coastguard Worker 
104*d57664e9SAndroid Build Coastguard Worker #endif /* DAMAGEACCUMULATOR_H */
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