| /* |
| * Copyright (C) 2006 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. |
| */ |
| |
| package android.view; |
| |
| import android.util.DisplayMetrics; |
| import com.android.internal.view.BaseIWindow; |
| |
| import android.content.Context; |
| import android.content.res.Configuration; |
| import android.content.res.Resources; |
| import android.content.res.CompatibilityInfo.Translator; |
| import android.graphics.Canvas; |
| import android.graphics.PixelFormat; |
| import android.graphics.PorterDuff; |
| import android.graphics.Rect; |
| import android.graphics.Region; |
| import android.os.Handler; |
| import android.os.Message; |
| import android.os.RemoteException; |
| import android.os.SystemClock; |
| import android.os.ParcelFileDescriptor; |
| import android.util.AttributeSet; |
| import android.util.Config; |
| import android.util.Log; |
| |
| import java.lang.ref.WeakReference; |
| import java.util.ArrayList; |
| import java.util.concurrent.locks.ReentrantLock; |
| |
| /** |
| * Provides a dedicated drawing surface embedded inside of a view hierarchy. |
| * You can control the format of this surface and, if you like, its size; the |
| * SurfaceView takes care of placing the surface at the correct location on the |
| * screen |
| * |
| * <p>The surface is Z ordered so that it is behind the window holding its |
| * SurfaceView; the SurfaceView punches a hole in its window to allow its |
| * surface to be displayed. The view hierarchy will take care of correctly |
| * compositing with the Surface any siblings of the SurfaceView that would |
| * normally appear on top of it. This can be used to place overlays such as |
| * buttons on top of the Surface, though note however that it can have an |
| * impact on performance since a full alpha-blended composite will be performed |
| * each time the Surface changes. |
| * |
| * <p>Access to the underlying surface is provided via the SurfaceHolder interface, |
| * which can be retrieved by calling {@link #getHolder}. |
| * |
| * <p>The Surface will be created for you while the SurfaceView's window is |
| * visible; you should implement {@link SurfaceHolder.Callback#surfaceCreated} |
| * and {@link SurfaceHolder.Callback#surfaceDestroyed} to discover when the |
| * Surface is created and destroyed as the window is shown and hidden. |
| * |
| * <p>One of the purposes of this class is to provide a surface in which a |
| * secondary thread can render in to the screen. If you are going to use it |
| * this way, you need to be aware of some threading semantics: |
| * |
| * <ul> |
| * <li> All SurfaceView and |
| * {@link SurfaceHolder.Callback SurfaceHolder.Callback} methods will be called |
| * from the thread running the SurfaceView's window (typically the main thread |
| * of the application). They thus need to correctly synchronize with any |
| * state that is also touched by the drawing thread. |
| * <li> You must ensure that the drawing thread only touches the underlying |
| * Surface while it is valid -- between |
| * {@link SurfaceHolder.Callback#surfaceCreated SurfaceHolder.Callback.surfaceCreated()} |
| * and |
| * {@link SurfaceHolder.Callback#surfaceDestroyed SurfaceHolder.Callback.surfaceDestroyed()}. |
| * </ul> |
| */ |
| public class SurfaceView extends View { |
| static private final String TAG = "SurfaceView"; |
| static private final boolean DEBUG = false; |
| static private final boolean localLOGV = DEBUG ? true : Config.LOGV; |
| |
| final ArrayList<SurfaceHolder.Callback> mCallbacks |
| = new ArrayList<SurfaceHolder.Callback>(); |
| |
| final int[] mLocation = new int[2]; |
| |
| final ReentrantLock mSurfaceLock = new ReentrantLock(); |
| final Surface mSurface = new Surface(); |
| boolean mDrawingStopped = true; |
| |
| final WindowManager.LayoutParams mLayout |
| = new WindowManager.LayoutParams(); |
| IWindowSession mSession; |
| MyWindow mWindow; |
| final Rect mVisibleInsets = new Rect(); |
| final Rect mWinFrame = new Rect(); |
| final Rect mContentInsets = new Rect(); |
| final Configuration mConfiguration = new Configuration(); |
| |
| static final int KEEP_SCREEN_ON_MSG = 1; |
| static final int GET_NEW_SURFACE_MSG = 2; |
| static final int UPDATE_WINDOW_MSG = 3; |
| |
| int mWindowType = WindowManager.LayoutParams.TYPE_APPLICATION_MEDIA; |
| |
| boolean mIsCreating = false; |
| |
| final Handler mHandler = new Handler() { |
| @Override |
| public void handleMessage(Message msg) { |
| switch (msg.what) { |
| case KEEP_SCREEN_ON_MSG: { |
| setKeepScreenOn(msg.arg1 != 0); |
| } break; |
| case GET_NEW_SURFACE_MSG: { |
| handleGetNewSurface(); |
| } break; |
| case UPDATE_WINDOW_MSG: { |
| updateWindow(false, false); |
| } break; |
| } |
| } |
| }; |
| |
| final ViewTreeObserver.OnScrollChangedListener mScrollChangedListener |
| = new ViewTreeObserver.OnScrollChangedListener() { |
| public void onScrollChanged() { |
| updateWindow(false, false); |
| } |
| }; |
| |
| boolean mRequestedVisible = false; |
| boolean mWindowVisibility = false; |
| boolean mViewVisibility = false; |
| int mRequestedWidth = -1; |
| int mRequestedHeight = -1; |
| /* Set SurfaceView's format to 565 by default to maintain backward |
| * compatibility with applications assuming this format. |
| */ |
| int mRequestedFormat = PixelFormat.RGB_565; |
| int mRequestedType = -1; |
| |
| boolean mHaveFrame = false; |
| boolean mDestroyReportNeeded = false; |
| boolean mNewSurfaceNeeded = false; |
| long mLastLockTime = 0; |
| |
| boolean mVisible = false; |
| int mLeft = -1; |
| int mTop = -1; |
| int mWidth = -1; |
| int mHeight = -1; |
| int mFormat = -1; |
| int mType = -1; |
| final Rect mSurfaceFrame = new Rect(); |
| int mLastSurfaceWidth = -1, mLastSurfaceHeight = -1; |
| boolean mUpdateWindowNeeded; |
| boolean mReportDrawNeeded; |
| private Translator mTranslator; |
| |
| public SurfaceView(Context context) { |
| super(context); |
| init(); |
| } |
| |
| public SurfaceView(Context context, AttributeSet attrs) { |
| super(context, attrs); |
| init(); |
| } |
| |
| public SurfaceView(Context context, AttributeSet attrs, int defStyle) { |
| super(context, attrs, defStyle); |
| init(); |
| } |
| |
| private void init() { |
| setWillNotDraw(true); |
| } |
| |
| /** |
| * Return the SurfaceHolder providing access and control over this |
| * SurfaceView's underlying surface. |
| * |
| * @return SurfaceHolder The holder of the surface. |
| */ |
| public SurfaceHolder getHolder() { |
| return mSurfaceHolder; |
| } |
| |
| @Override |
| protected void onAttachedToWindow() { |
| super.onAttachedToWindow(); |
| mParent.requestTransparentRegion(this); |
| mSession = getWindowSession(); |
| mLayout.token = getWindowToken(); |
| mLayout.setTitle("SurfaceView"); |
| mViewVisibility = getVisibility() == VISIBLE; |
| getViewTreeObserver().addOnScrollChangedListener(mScrollChangedListener); |
| } |
| |
| @Override |
| protected void onWindowVisibilityChanged(int visibility) { |
| super.onWindowVisibilityChanged(visibility); |
| mWindowVisibility = visibility == VISIBLE; |
| mRequestedVisible = mWindowVisibility && mViewVisibility; |
| updateWindow(false, false); |
| } |
| |
| @Override |
| public void setVisibility(int visibility) { |
| super.setVisibility(visibility); |
| mViewVisibility = visibility == VISIBLE; |
| mRequestedVisible = mWindowVisibility && mViewVisibility; |
| updateWindow(false, false); |
| } |
| |
| /** |
| * This method is not intended for general use. It was created |
| * temporarily to improve performance of 3D layers in Launcher |
| * and should be removed and fixed properly. |
| * |
| * Do not call this method. Ever. |
| * |
| * @hide |
| */ |
| protected void showSurface() { |
| if (mSession != null) { |
| updateWindow(true, false); |
| } |
| } |
| |
| /** |
| * This method is not intended for general use. It was created |
| * temporarily to improve performance of 3D layers in Launcher |
| * and should be removed and fixed properly. |
| * |
| * Do not call this method. Ever. |
| * |
| * @hide |
| */ |
| protected void hideSurface() { |
| if (mSession != null && mWindow != null) { |
| mSurfaceLock.lock(); |
| try { |
| DisplayMetrics metrics = getResources().getDisplayMetrics(); |
| mLayout.x = metrics.widthPixels * 3; |
| mSession.relayout(mWindow, mLayout, mWidth, mHeight, VISIBLE, false, |
| mWinFrame, mContentInsets, mVisibleInsets, mConfiguration, mSurface); |
| } catch (RemoteException e) { |
| // Ignore |
| } finally { |
| mSurfaceLock.unlock(); |
| } |
| } |
| } |
| |
| @Override |
| protected void onDetachedFromWindow() { |
| getViewTreeObserver().removeOnScrollChangedListener(mScrollChangedListener); |
| mRequestedVisible = false; |
| updateWindow(false, false); |
| mHaveFrame = false; |
| if (mWindow != null) { |
| try { |
| mSession.remove(mWindow); |
| } catch (RemoteException ex) { |
| } |
| mWindow = null; |
| } |
| mSession = null; |
| mLayout.token = null; |
| |
| super.onDetachedFromWindow(); |
| } |
| |
| @Override |
| protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) { |
| int width = getDefaultSize(mRequestedWidth, widthMeasureSpec); |
| int height = getDefaultSize(mRequestedHeight, heightMeasureSpec); |
| setMeasuredDimension(width, height); |
| } |
| |
| @Override |
| protected void onSizeChanged(int w, int h, int oldw, int oldh) { |
| super.onSizeChanged(w, h, oldw, oldh); |
| updateWindow(false, false); |
| } |
| |
| @Override |
| public boolean gatherTransparentRegion(Region region) { |
| if (mWindowType == WindowManager.LayoutParams.TYPE_APPLICATION_PANEL) { |
| return super.gatherTransparentRegion(region); |
| } |
| |
| boolean opaque = true; |
| if ((mPrivateFlags & SKIP_DRAW) == 0) { |
| // this view draws, remove it from the transparent region |
| opaque = super.gatherTransparentRegion(region); |
| } else if (region != null) { |
| int w = getWidth(); |
| int h = getHeight(); |
| if (w>0 && h>0) { |
| getLocationInWindow(mLocation); |
| // otherwise, punch a hole in the whole hierarchy |
| int l = mLocation[0]; |
| int t = mLocation[1]; |
| region.op(l, t, l+w, t+h, Region.Op.UNION); |
| } |
| } |
| if (PixelFormat.formatHasAlpha(mRequestedFormat)) { |
| opaque = false; |
| } |
| return opaque; |
| } |
| |
| @Override |
| public void draw(Canvas canvas) { |
| if (mWindowType != WindowManager.LayoutParams.TYPE_APPLICATION_PANEL) { |
| // draw() is not called when SKIP_DRAW is set |
| if ((mPrivateFlags & SKIP_DRAW) == 0) { |
| // punch a whole in the view-hierarchy below us |
| canvas.drawColor(0, PorterDuff.Mode.CLEAR); |
| } |
| } |
| super.draw(canvas); |
| } |
| |
| @Override |
| protected void dispatchDraw(Canvas canvas) { |
| if (mWindowType != WindowManager.LayoutParams.TYPE_APPLICATION_PANEL) { |
| // if SKIP_DRAW is cleared, draw() has already punched a hole |
| if ((mPrivateFlags & SKIP_DRAW) == SKIP_DRAW) { |
| // punch a whole in the view-hierarchy below us |
| canvas.drawColor(0, PorterDuff.Mode.CLEAR); |
| } |
| } |
| // reposition ourselves where the surface is |
| mHaveFrame = true; |
| updateWindow(false, false); |
| super.dispatchDraw(canvas); |
| } |
| |
| /** |
| * Control whether the surface view's surface is placed on top of another |
| * regular surface view in the window (but still behind the window itself). |
| * This is typically used to place overlays on top of an underlying media |
| * surface view. |
| * |
| * <p>Note that this must be set before the surface view's containing |
| * window is attached to the window manager. |
| * |
| * <p>Calling this overrides any previous call to {@link #setZOrderOnTop}. |
| */ |
| public void setZOrderMediaOverlay(boolean isMediaOverlay) { |
| mWindowType = isMediaOverlay |
| ? WindowManager.LayoutParams.TYPE_APPLICATION_MEDIA_OVERLAY |
| : WindowManager.LayoutParams.TYPE_APPLICATION_MEDIA; |
| } |
| |
| /** |
| * Control whether the surface view's surface is placed on top of its |
| * window. Normally it is placed behind the window, to allow it to |
| * (for the most part) appear to composite with the views in the |
| * hierarchy. By setting this, you cause it to be placed above the |
| * window. This means that none of the contents of the window this |
| * SurfaceView is in will be visible on top of its surface. |
| * |
| * <p>Note that this must be set before the surface view's containing |
| * window is attached to the window manager. |
| * |
| * <p>Calling this overrides any previous call to {@link #setZOrderMediaOverlay}. |
| */ |
| public void setZOrderOnTop(boolean onTop) { |
| if (onTop) { |
| mWindowType = WindowManager.LayoutParams.TYPE_APPLICATION_PANEL; |
| // ensures the surface is placed below the IME |
| mLayout.flags |= WindowManager.LayoutParams.FLAG_ALT_FOCUSABLE_IM; |
| } else { |
| mWindowType = WindowManager.LayoutParams.TYPE_APPLICATION_MEDIA; |
| mLayout.flags &= ~WindowManager.LayoutParams.FLAG_ALT_FOCUSABLE_IM; |
| } |
| } |
| |
| /** |
| * Hack to allow special layering of windows. The type is one of the |
| * types in WindowManager.LayoutParams. This is a hack so: |
| * @hide |
| */ |
| public void setWindowType(int type) { |
| mWindowType = type; |
| } |
| |
| private void updateWindow(boolean force, boolean redrawNeeded) { |
| if (!mHaveFrame) { |
| return; |
| } |
| ViewRoot viewRoot = (ViewRoot) getRootView().getParent(); |
| if (viewRoot != null) { |
| mTranslator = viewRoot.mTranslator; |
| } |
| |
| Resources res = getContext().getResources(); |
| if (mTranslator != null || !res.getCompatibilityInfo().supportsScreen()) { |
| mSurface.setCompatibleDisplayMetrics(res.getDisplayMetrics(), mTranslator); |
| } |
| |
| int myWidth = mRequestedWidth; |
| if (myWidth <= 0) myWidth = getWidth(); |
| int myHeight = mRequestedHeight; |
| if (myHeight <= 0) myHeight = getHeight(); |
| |
| getLocationInWindow(mLocation); |
| final boolean creating = mWindow == null; |
| final boolean formatChanged = mFormat != mRequestedFormat; |
| final boolean sizeChanged = mWidth != myWidth || mHeight != myHeight; |
| final boolean visibleChanged = mVisible != mRequestedVisible |
| || mNewSurfaceNeeded; |
| final boolean typeChanged = mType != mRequestedType; |
| if (force || creating || formatChanged || sizeChanged || visibleChanged |
| || typeChanged || mLeft != mLocation[0] || mTop != mLocation[1] |
| || mUpdateWindowNeeded || mReportDrawNeeded || redrawNeeded) { |
| |
| if (localLOGV) Log.i(TAG, "Changes: creating=" + creating |
| + " format=" + formatChanged + " size=" + sizeChanged |
| + " visible=" + visibleChanged |
| + " left=" + (mLeft != mLocation[0]) |
| + " top=" + (mTop != mLocation[1])); |
| |
| try { |
| final boolean visible = mVisible = mRequestedVisible; |
| mLeft = mLocation[0]; |
| mTop = mLocation[1]; |
| mWidth = myWidth; |
| mHeight = myHeight; |
| mFormat = mRequestedFormat; |
| mType = mRequestedType; |
| |
| // Scaling/Translate window's layout here because mLayout is not used elsewhere. |
| |
| // Places the window relative |
| mLayout.x = mLeft; |
| mLayout.y = mTop; |
| mLayout.width = getWidth(); |
| mLayout.height = getHeight(); |
| if (mTranslator != null) { |
| mTranslator.translateLayoutParamsInAppWindowToScreen(mLayout); |
| } |
| |
| mLayout.format = mRequestedFormat; |
| mLayout.flags |=WindowManager.LayoutParams.FLAG_NOT_TOUCHABLE |
| | WindowManager.LayoutParams.FLAG_NOT_FOCUSABLE |
| | WindowManager.LayoutParams.FLAG_LAYOUT_NO_LIMITS |
| | WindowManager.LayoutParams.FLAG_SCALED |
| | WindowManager.LayoutParams.FLAG_NOT_FOCUSABLE |
| | WindowManager.LayoutParams.FLAG_NOT_TOUCHABLE |
| ; |
| if (!getContext().getResources().getCompatibilityInfo().supportsScreen()) { |
| mLayout.flags |= WindowManager.LayoutParams.FLAG_COMPATIBLE_WINDOW; |
| } |
| |
| mLayout.memoryType = mRequestedType; |
| |
| if (mWindow == null) { |
| mWindow = new MyWindow(this); |
| mLayout.type = mWindowType; |
| mLayout.gravity = Gravity.LEFT|Gravity.TOP; |
| mSession.addWithoutInputChannel(mWindow, mLayout, |
| mVisible ? VISIBLE : GONE, mContentInsets); |
| } |
| |
| if (visibleChanged && (!visible || mNewSurfaceNeeded)) { |
| reportSurfaceDestroyed(); |
| } |
| |
| mNewSurfaceNeeded = false; |
| |
| boolean realSizeChanged; |
| boolean reportDrawNeeded; |
| |
| mSurfaceLock.lock(); |
| try { |
| mUpdateWindowNeeded = false; |
| reportDrawNeeded = mReportDrawNeeded; |
| mReportDrawNeeded = false; |
| mDrawingStopped = !visible; |
| |
| final int relayoutResult = mSession.relayout( |
| mWindow, mLayout, mWidth, mHeight, |
| visible ? VISIBLE : GONE, false, mWinFrame, mContentInsets, |
| mVisibleInsets, mConfiguration, mSurface); |
| if ((relayoutResult&WindowManagerImpl.RELAYOUT_FIRST_TIME) != 0) { |
| mReportDrawNeeded = true; |
| } |
| |
| if (localLOGV) Log.i(TAG, "New surface: " + mSurface |
| + ", vis=" + visible + ", frame=" + mWinFrame); |
| |
| mSurfaceFrame.left = 0; |
| mSurfaceFrame.top = 0; |
| if (mTranslator == null) { |
| mSurfaceFrame.right = mWinFrame.width(); |
| mSurfaceFrame.bottom = mWinFrame.height(); |
| } else { |
| float appInvertedScale = mTranslator.applicationInvertedScale; |
| mSurfaceFrame.right = (int) (mWinFrame.width() * appInvertedScale + 0.5f); |
| mSurfaceFrame.bottom = (int) (mWinFrame.height() * appInvertedScale + 0.5f); |
| } |
| |
| final int surfaceWidth = mSurfaceFrame.right; |
| final int surfaceHeight = mSurfaceFrame.bottom; |
| realSizeChanged = mLastSurfaceWidth != surfaceWidth |
| || mLastSurfaceHeight != surfaceHeight; |
| mLastSurfaceWidth = surfaceWidth; |
| mLastSurfaceHeight = surfaceHeight; |
| } finally { |
| mSurfaceLock.unlock(); |
| } |
| |
| try { |
| redrawNeeded |= creating | reportDrawNeeded; |
| |
| if (visible) { |
| mDestroyReportNeeded = true; |
| |
| SurfaceHolder.Callback callbacks[]; |
| synchronized (mCallbacks) { |
| callbacks = new SurfaceHolder.Callback[mCallbacks.size()]; |
| mCallbacks.toArray(callbacks); |
| } |
| |
| if (visibleChanged) { |
| mIsCreating = true; |
| for (SurfaceHolder.Callback c : callbacks) { |
| c.surfaceCreated(mSurfaceHolder); |
| } |
| } |
| if (creating || formatChanged || sizeChanged |
| || visibleChanged || realSizeChanged) { |
| for (SurfaceHolder.Callback c : callbacks) { |
| c.surfaceChanged(mSurfaceHolder, mFormat, myWidth, myHeight); |
| } |
| } |
| if (redrawNeeded) { |
| for (SurfaceHolder.Callback c : callbacks) { |
| if (c instanceof SurfaceHolder.Callback2) { |
| ((SurfaceHolder.Callback2)c).surfaceRedrawNeeded( |
| mSurfaceHolder); |
| } |
| } |
| } |
| } else { |
| mSurface.release(); |
| } |
| } finally { |
| mIsCreating = false; |
| if (redrawNeeded) { |
| mSession.finishDrawing(mWindow); |
| } |
| } |
| } catch (RemoteException ex) { |
| } |
| if (localLOGV) Log.v( |
| TAG, "Layout: x=" + mLayout.x + " y=" + mLayout.y + |
| " w=" + mLayout.width + " h=" + mLayout.height + |
| ", frame=" + mSurfaceFrame); |
| } |
| } |
| |
| private void reportSurfaceDestroyed() { |
| if (mDestroyReportNeeded) { |
| mDestroyReportNeeded = false; |
| SurfaceHolder.Callback callbacks[]; |
| synchronized (mCallbacks) { |
| callbacks = new SurfaceHolder.Callback[mCallbacks.size()]; |
| mCallbacks.toArray(callbacks); |
| } |
| for (SurfaceHolder.Callback c : callbacks) { |
| c.surfaceDestroyed(mSurfaceHolder); |
| } |
| } |
| super.onDetachedFromWindow(); |
| } |
| |
| void handleGetNewSurface() { |
| mNewSurfaceNeeded = true; |
| updateWindow(false, false); |
| } |
| |
| /** |
| * Check to see if the surface has fixed size dimensions or if the surface's |
| * dimensions are dimensions are dependent on its current layout. |
| * |
| * @return true if the surface has dimensions that are fixed in size |
| * @hide |
| */ |
| public boolean isFixedSize() { |
| return (mRequestedWidth != -1 || mRequestedHeight != -1); |
| } |
| |
| private static class MyWindow extends BaseIWindow { |
| private final WeakReference<SurfaceView> mSurfaceView; |
| |
| public MyWindow(SurfaceView surfaceView) { |
| mSurfaceView = new WeakReference<SurfaceView>(surfaceView); |
| } |
| |
| public void resized(int w, int h, Rect coveredInsets, |
| Rect visibleInsets, boolean reportDraw, Configuration newConfig) { |
| SurfaceView surfaceView = mSurfaceView.get(); |
| if (surfaceView != null) { |
| if (localLOGV) Log.v( |
| "SurfaceView", surfaceView + " got resized: w=" + |
| w + " h=" + h + ", cur w=" + mCurWidth + " h=" + mCurHeight); |
| surfaceView.mSurfaceLock.lock(); |
| try { |
| if (reportDraw) { |
| surfaceView.mUpdateWindowNeeded = true; |
| surfaceView.mReportDrawNeeded = true; |
| surfaceView.mHandler.sendEmptyMessage(UPDATE_WINDOW_MSG); |
| } else if (surfaceView.mWinFrame.width() != w |
| || surfaceView.mWinFrame.height() != h) { |
| surfaceView.mUpdateWindowNeeded = true; |
| surfaceView.mHandler.sendEmptyMessage(UPDATE_WINDOW_MSG); |
| } |
| } finally { |
| surfaceView.mSurfaceLock.unlock(); |
| } |
| } |
| } |
| |
| public void dispatchAppVisibility(boolean visible) { |
| // The point of SurfaceView is to let the app control the surface. |
| } |
| |
| public void dispatchGetNewSurface() { |
| SurfaceView surfaceView = mSurfaceView.get(); |
| if (surfaceView != null) { |
| Message msg = surfaceView.mHandler.obtainMessage(GET_NEW_SURFACE_MSG); |
| surfaceView.mHandler.sendMessage(msg); |
| } |
| } |
| |
| public void windowFocusChanged(boolean hasFocus, boolean touchEnabled) { |
| Log.w("SurfaceView", "Unexpected focus in surface: focus=" + hasFocus + ", touchEnabled=" + touchEnabled); |
| } |
| |
| public void executeCommand(String command, String parameters, ParcelFileDescriptor out) { |
| } |
| |
| int mCurWidth = -1; |
| int mCurHeight = -1; |
| } |
| |
| private SurfaceHolder mSurfaceHolder = new SurfaceHolder() { |
| |
| private static final String LOG_TAG = "SurfaceHolder"; |
| |
| public boolean isCreating() { |
| return mIsCreating; |
| } |
| |
| public void addCallback(Callback callback) { |
| synchronized (mCallbacks) { |
| // This is a linear search, but in practice we'll |
| // have only a couple callbacks, so it doesn't matter. |
| if (mCallbacks.contains(callback) == false) { |
| mCallbacks.add(callback); |
| } |
| } |
| } |
| |
| public void removeCallback(Callback callback) { |
| synchronized (mCallbacks) { |
| mCallbacks.remove(callback); |
| } |
| } |
| |
| public void setFixedSize(int width, int height) { |
| if (mRequestedWidth != width || mRequestedHeight != height) { |
| mRequestedWidth = width; |
| mRequestedHeight = height; |
| requestLayout(); |
| } |
| } |
| |
| public void setSizeFromLayout() { |
| if (mRequestedWidth != -1 || mRequestedHeight != -1) { |
| mRequestedWidth = mRequestedHeight = -1; |
| requestLayout(); |
| } |
| } |
| |
| public void setFormat(int format) { |
| |
| // for backward compatibility reason, OPAQUE always |
| // means 565 for SurfaceView |
| if (format == PixelFormat.OPAQUE) |
| format = PixelFormat.RGB_565; |
| |
| mRequestedFormat = format; |
| if (mWindow != null) { |
| updateWindow(false, false); |
| } |
| } |
| |
| public void setType(int type) { |
| switch (type) { |
| case SURFACE_TYPE_HARDWARE: |
| case SURFACE_TYPE_GPU: |
| // these are deprecated, treat as "NORMAL" |
| type = SURFACE_TYPE_NORMAL; |
| break; |
| } |
| switch (type) { |
| case SURFACE_TYPE_NORMAL: |
| case SURFACE_TYPE_PUSH_BUFFERS: |
| mRequestedType = type; |
| if (mWindow != null) { |
| updateWindow(false, false); |
| } |
| break; |
| } |
| } |
| |
| public void setKeepScreenOn(boolean screenOn) { |
| Message msg = mHandler.obtainMessage(KEEP_SCREEN_ON_MSG); |
| msg.arg1 = screenOn ? 1 : 0; |
| mHandler.sendMessage(msg); |
| } |
| |
| public Canvas lockCanvas() { |
| return internalLockCanvas(null); |
| } |
| |
| public Canvas lockCanvas(Rect dirty) { |
| return internalLockCanvas(dirty); |
| } |
| |
| private final Canvas internalLockCanvas(Rect dirty) { |
| if (mType == SURFACE_TYPE_PUSH_BUFFERS) { |
| throw new BadSurfaceTypeException( |
| "Surface type is SURFACE_TYPE_PUSH_BUFFERS"); |
| } |
| mSurfaceLock.lock(); |
| |
| if (localLOGV) Log.i(TAG, "Locking canvas... stopped=" |
| + mDrawingStopped + ", win=" + mWindow); |
| |
| Canvas c = null; |
| if (!mDrawingStopped && mWindow != null) { |
| Rect frame = dirty != null ? dirty : mSurfaceFrame; |
| try { |
| c = mSurface.lockCanvas(frame); |
| } catch (Exception e) { |
| Log.e(LOG_TAG, "Exception locking surface", e); |
| } |
| } |
| |
| if (localLOGV) Log.i(TAG, "Returned canvas: " + c); |
| if (c != null) { |
| mLastLockTime = SystemClock.uptimeMillis(); |
| return c; |
| } |
| |
| // If the Surface is not ready to be drawn, then return null, |
| // but throttle calls to this function so it isn't called more |
| // than every 100ms. |
| long now = SystemClock.uptimeMillis(); |
| long nextTime = mLastLockTime + 100; |
| if (nextTime > now) { |
| try { |
| Thread.sleep(nextTime-now); |
| } catch (InterruptedException e) { |
| } |
| now = SystemClock.uptimeMillis(); |
| } |
| mLastLockTime = now; |
| mSurfaceLock.unlock(); |
| |
| return null; |
| } |
| |
| public void unlockCanvasAndPost(Canvas canvas) { |
| mSurface.unlockCanvasAndPost(canvas); |
| mSurfaceLock.unlock(); |
| } |
| |
| public Surface getSurface() { |
| return mSurface; |
| } |
| |
| public Rect getSurfaceFrame() { |
| return mSurfaceFrame; |
| } |
| }; |
| } |
