replicant-frameworks_native/include/gui/Surface.h
Jamie Gennis f15a83f581 SurfaceFlinger: add a crop to the layer state
This change adds a crop rectangle specified in window coordinates to the layer
state.  The all window pixels outside this crop rectangle are treated as though
they were fully transparent.  This change also adds the plumbing necessary for
WindowManager to set that crop.

Change-Id: I582bc445dc8c97d4c943d4db8d582a6ef5a66081
2012-05-11 03:16:02 -07:00

177 lines
5.0 KiB
C++

/*
* 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_GUI_SURFACE_H
#define ANDROID_GUI_SURFACE_H
#include <stdint.h>
#include <sys/types.h>
#include <utils/KeyedVector.h>
#include <utils/RefBase.h>
#include <utils/threads.h>
#include <ui/PixelFormat.h>
#include <ui/Region.h>
#include <gui/SurfaceTextureClient.h>
#include <gui/ISurface.h>
#include <gui/ISurfaceComposerClient.h>
#define ANDROID_VIEW_SURFACE_JNI_ID "mNativeSurface"
namespace android {
// ---------------------------------------------------------------------------
class ISurfaceTexture;
class Surface;
class SurfaceComposerClient;
// ---------------------------------------------------------------------------
class SurfaceControl : public RefBase
{
public:
static bool isValid(const sp<SurfaceControl>& surface) {
return (surface != 0) && surface->isValid();
}
bool isValid() {
return mToken>=0 && mClient!=0;
}
static bool isSameSurface(
const sp<SurfaceControl>& lhs, const sp<SurfaceControl>& rhs);
uint32_t getIdentity() const { return mIdentity; }
// release surface data from java
void clear();
status_t setLayer(int32_t layer);
status_t setPosition(int32_t x, int32_t y);
status_t setSize(uint32_t w, uint32_t h);
status_t hide();
status_t show(int32_t layer = -1);
status_t freeze();
status_t unfreeze();
status_t setFlags(uint32_t flags, uint32_t mask);
status_t setTransparentRegionHint(const Region& transparent);
status_t setAlpha(float alpha=1.0f);
status_t setMatrix(float dsdx, float dtdx, float dsdy, float dtdy);
status_t setFreezeTint(uint32_t tint);
status_t setCrop(const Rect& crop);
static status_t writeSurfaceToParcel(
const sp<SurfaceControl>& control, Parcel* parcel);
sp<Surface> getSurface() const;
private:
// can't be copied
SurfaceControl& operator = (SurfaceControl& rhs);
SurfaceControl(const SurfaceControl& rhs);
friend class SurfaceComposerClient;
friend class Surface;
SurfaceControl(
const sp<SurfaceComposerClient>& client,
const sp<ISurface>& surface,
const ISurfaceComposerClient::surface_data_t& data);
~SurfaceControl();
status_t validate() const;
void destroy();
sp<SurfaceComposerClient> mClient;
sp<ISurface> mSurface;
SurfaceID mToken;
uint32_t mIdentity;
mutable Mutex mLock;
mutable sp<Surface> mSurfaceData;
};
// ---------------------------------------------------------------------------
class Surface : public SurfaceTextureClient
{
public:
struct SurfaceInfo {
uint32_t w;
uint32_t h;
uint32_t s;
uint32_t usage;
PixelFormat format;
void* bits;
uint32_t reserved[2];
};
explicit Surface(const sp<ISurfaceTexture>& st);
static status_t writeToParcel(const sp<Surface>& control, Parcel* parcel);
static sp<Surface> readFromParcel(const Parcel& data);
static bool isValid(const sp<Surface>& surface) {
return (surface != 0) && surface->isValid();
}
bool isValid();
uint32_t getIdentity() const { return mIdentity; }
sp<ISurfaceTexture> getSurfaceTexture();
// the lock/unlock APIs must be used from the same thread
status_t lock(SurfaceInfo* info, Region* dirty = NULL);
status_t unlockAndPost();
sp<IBinder> asBinder() const;
private:
// this is just to be able to write some unit tests
friend class Test;
friend class SurfaceControl;
// can't be copied
Surface& operator = (Surface& rhs);
Surface(const Surface& rhs);
explicit Surface(const sp<SurfaceControl>& control);
Surface(const Parcel& data, const sp<IBinder>& ref);
~Surface();
/*
* private stuff...
*/
void init(const sp<ISurfaceTexture>& surfaceTexture);
static void cleanCachedSurfacesLocked();
virtual int query(int what, int* value) const;
// constants
sp<ISurface> mSurface;
uint32_t mIdentity;
// A cache of Surface objects that have been deserialized into this process.
static Mutex sCachedSurfacesLock;
static DefaultKeyedVector<wp<IBinder>, wp<Surface> > sCachedSurfaces;
};
}; // namespace android
#endif // ANDROID_GUI_SURFACE_H