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-rw-r--r--services/surfaceflinger/Transform.h127
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diff --git a/services/surfaceflinger/Transform.h b/services/surfaceflinger/Transform.h
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--- a/services/surfaceflinger/Transform.h
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-/*
- * Copyright (C) 2007 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#ifndef ANDROID_TRANSFORM_H
-#define ANDROID_TRANSFORM_H
-
-#include <stdint.h>
-#include <sys/types.h>
-
-#include <ui/Point.h>
-#include <ui/Rect.h>
-
-#include <hardware/hardware.h>
-
-namespace android {
-
-class Region;
-
-// ---------------------------------------------------------------------------
-
-class Transform
-{
-public:
- Transform();
- Transform(const Transform& other);
- explicit Transform(uint32_t orientation);
- ~Transform();
-
- enum orientation_flags {
- ROT_0 = 0x00000000,
- FLIP_H = HAL_TRANSFORM_FLIP_H,
- FLIP_V = HAL_TRANSFORM_FLIP_V,
- ROT_90 = HAL_TRANSFORM_ROT_90,
- ROT_180 = FLIP_H|FLIP_V,
- ROT_270 = ROT_180|ROT_90,
- ROT_INVALID = 0x80
- };
-
- enum type_mask {
- IDENTITY = 0,
- TRANSLATE = 0x1,
- ROTATE = 0x2,
- SCALE = 0x4,
- UNKNOWN = 0x8
- };
-
- // query the transform
- bool transformed() const;
- bool preserveRects() const;
- uint32_t getType() const;
- uint32_t getOrientation() const;
-
- float const* operator [] (int i) const; // returns column i
- float tx() const;
- float ty() const;
-
- // modify the transform
- void reset();
- void set(float tx, float ty);
- void set(float a, float b, float c, float d);
- status_t set(uint32_t flags, float w, float h);
-
- // transform data
- Rect makeBounds(int w, int h) const;
- void transform(float* point, int x, int y) const;
- Region transform(const Region& reg) const;
- Transform operator * (const Transform& rhs) const;
-
- // for debugging
- void dump(const char* name) const;
-
-private:
- struct vec3 {
- float v[3];
- inline vec3() { }
- inline vec3(float a, float b, float c) {
- v[0] = a; v[1] = b; v[2] = c;
- }
- inline float operator [] (int i) const { return v[i]; }
- inline float& operator [] (int i) { return v[i]; }
- };
- struct vec2 {
- float v[2];
- inline vec2() { }
- inline vec2(float a, float b) {
- v[0] = a; v[1] = b;
- }
- inline float operator [] (int i) const { return v[i]; }
- inline float& operator [] (int i) { return v[i]; }
- };
- struct mat33 {
- vec3 v[3];
- inline const vec3& operator [] (int i) const { return v[i]; }
- inline vec3& operator [] (int i) { return v[i]; }
- };
-
- enum { UNKNOWN_TYPE = 0x80000000 };
-
- // assumes the last row is < 0 , 0 , 1 >
- vec2 transform(const vec2& v) const;
- vec3 transform(const vec3& v) const;
- Rect transform(const Rect& bounds) const;
- uint32_t type() const;
- static bool absIsOne(float f);
- static bool isZero(float f);
-
- mat33 mMatrix;
- mutable uint32_t mType;
-};
-
-// ---------------------------------------------------------------------------
-}; // namespace android
-
-#endif /* ANDROID_TRANSFORM_H */