Initial Contribution

1 files changed, 87 insertions, 0 deletions

diff --git a/libs/surfaceflinger/Transform.h b/libs/surfaceflinger/Transform.h
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index 0000000..2f617c4
--- /dev/null
+++ b/libs/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 <GLES/gl.h>
+
+#include <corecg/SkMatrix.h>
+
+namespace android {
+
+class Region;
+
+// ---------------------------------------------------------------------------
+
+class Transform
+{
+public:
+                    Transform();
+                    Transform(const Transform&  other);
+                    ~Transform();
+
+            enum orientation_flags {
+                ROT_0   = 0x00000000,
+                FLIP_H  = 0x00000001,
+                FLIP_V  = 0x00000002,
+                ROT_90  = 0x00000004,
+                ROT_180 = FLIP_H|FLIP_V,
+                ROT_270 = ROT_180|ROT_90,
+                ROT_INVALID = 0x80000000
+            };
+
+            bool    transformed() const;
+            int32_t getOrientation() const;
+            bool    preserveRects() const;
+            
+            int     tx() const;
+            int     ty() const;
+        
+            void    reset();
+            void    set(float xx, float xy, float yx, float yy);
+            void    set(int tx, int ty);
+
+            Rect    makeBounds(int w, int h) const;
+            void    transform(GLfixed* point, int x, int y) const;
+            Region  transform(const Region& reg) const;
+            Rect    transform(const Rect& bounds) const;
+
+            Transform operator * (const Transform& rhs) const;
+            float operator [] (int i) const;
+
+    inline uint32_t getType() const { return type(); }
+            
+    inline Transform(bool) : mType(0xFF) { };
+
+private:
+    uint8_t     type() const;
+
+private:
+            SkMatrix    mTransform;
+    mutable uint32_t    mType;      
+};
+
+// ---------------------------------------------------------------------------
+}; // namespace android
+
+#endif /* ANDROID_TRANSFORM_H */