| /* |
| * Copyright (C) 2011 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 com.android.server.wm; |
| |
| import android.content.res.Resources; |
| import android.graphics.PixelFormat; |
| import android.util.Slog; |
| import android.util.TypedValue; |
| import android.view.Surface; |
| import android.view.SurfaceSession; |
| |
| import java.io.PrintWriter; |
| |
| /** |
| * DimAnimator class that controls the dim animation. This holds the surface and |
| * all state used for dim animation. |
| */ |
| class DimAnimator { |
| static final String TAG = "DimAnimator"; |
| |
| Surface mDimSurface; |
| boolean mDimShown = false; |
| float mDimCurrentAlpha; |
| float mDimTargetAlpha; |
| float mDimDeltaPerMs; |
| long mLastDimAnimTime; |
| |
| int mLastDimWidth, mLastDimHeight; |
| |
| DimAnimator (SurfaceSession session, final int layerStack) { |
| try { |
| if (WindowManagerService.DEBUG_SURFACE_TRACE) { |
| mDimSurface = new WindowStateAnimator.SurfaceTrace(session, |
| "DimAnimator", |
| 16, 16, PixelFormat.OPAQUE, |
| Surface.FX_SURFACE_DIM | Surface.HIDDEN); |
| } else { |
| mDimSurface = new Surface(session, "DimAnimator", |
| 16, 16, PixelFormat.OPAQUE, |
| Surface.FX_SURFACE_DIM | Surface.HIDDEN); |
| } |
| if (WindowManagerService.SHOW_TRANSACTIONS || |
| WindowManagerService.SHOW_SURFACE_ALLOC) Slog.i(WindowManagerService.TAG, |
| " DIM " + mDimSurface + ": CREATE"); |
| mDimSurface.setLayerStack(layerStack); |
| mDimSurface.setAlpha(0.0f); |
| mDimSurface.show(); |
| } catch (Exception e) { |
| Slog.e(WindowManagerService.TAG, "Exception creating Dim surface", e); |
| } |
| } |
| |
| /** |
| * Set's the dim surface's layer and update dim parameters that will be used in |
| * {@link #updateSurface} after all windows are examined. |
| */ |
| void updateParameters(final Resources res, final Parameters params, final long currentTime) { |
| if (mDimSurface == null) { |
| Slog.e(TAG, "updateParameters: no Surface"); |
| return; |
| } |
| |
| // Multiply by 1.5 so that rotating a frozen surface that includes this does not expose a |
| // corner. |
| final int dw = (int) (params.mDimWidth * 1.5); |
| final int dh = (int) (params.mDimHeight * 1.5); |
| final WindowStateAnimator winAnimator = params.mDimWinAnimator; |
| final float target = params.mDimTarget; |
| if (!mDimShown) { |
| if (WindowManagerService.SHOW_TRANSACTIONS) Slog.i(WindowManagerService.TAG, |
| " DIM " + mDimSurface + ": SHOW pos=(0,0) (" + dw + "x" + dh + ")"); |
| mDimShown = true; |
| try { |
| mLastDimWidth = dw; |
| mLastDimHeight = dh; |
| // back off position so mDimXXX/4 is before and mDimXXX/4 is after |
| mDimSurface.setPosition(-1 * dw / 6, -1 * dh /6); |
| mDimSurface.setSize(dw, dh); |
| mDimSurface.show(); |
| } catch (RuntimeException e) { |
| Slog.w(WindowManagerService.TAG, "Failure showing dim surface", e); |
| } |
| } else if (mLastDimWidth != dw || mLastDimHeight != dh) { |
| mLastDimWidth = dw; |
| mLastDimHeight = dh; |
| mDimSurface.setSize(dw, dh); |
| // back off position so mDimXXX/4 is before and mDimXXX/4 is after |
| mDimSurface.setPosition(-1 * dw / 6, -1 * dh /6); |
| } |
| |
| mDimSurface.setLayer(winAnimator.mAnimLayer - WindowManagerService.LAYER_OFFSET_DIM); |
| |
| if (WindowManagerService.SHOW_TRANSACTIONS) Slog.i(WindowManagerService.TAG, " DIM " |
| + mDimSurface + ": layer=" + (winAnimator.mAnimLayer-1) + " target=" + target); |
| if (mDimTargetAlpha != target) { |
| // If the desired dim level has changed, then |
| // start an animation to it. |
| mLastDimAnimTime = currentTime; |
| long duration = (winAnimator.mAnimating && winAnimator.mAnimation != null) |
| ? winAnimator.mAnimation.computeDurationHint() |
| : WindowManagerService.DEFAULT_DIM_DURATION; |
| if (target > mDimTargetAlpha) { |
| TypedValue tv = new TypedValue(); |
| res.getValue(com.android.internal.R.fraction.config_dimBehindFadeDuration, |
| tv, true); |
| if (tv.type == TypedValue.TYPE_FRACTION) { |
| duration = (long)tv.getFraction(duration, duration); |
| } else if (tv.type >= TypedValue.TYPE_FIRST_INT |
| && tv.type <= TypedValue.TYPE_LAST_INT) { |
| duration = tv.data; |
| } |
| } |
| if (duration < 1) { |
| // Don't divide by zero |
| duration = 1; |
| } |
| mDimTargetAlpha = target; |
| mDimDeltaPerMs = (mDimTargetAlpha-mDimCurrentAlpha) / duration; |
| } |
| } |
| |
| /** |
| * Updating the surface's alpha. Returns true if the animation continues, or returns |
| * false when the animation is finished and the dim surface is hidden. |
| */ |
| boolean updateSurface(boolean dimming, long currentTime, boolean displayFrozen) { |
| if (mDimSurface == null) { |
| Slog.e(TAG, "updateSurface: no Surface"); |
| return false; |
| } |
| |
| if (!dimming) { |
| if (mDimTargetAlpha != 0) { |
| mLastDimAnimTime = currentTime; |
| mDimTargetAlpha = 0; |
| mDimDeltaPerMs = (-mDimCurrentAlpha) / WindowManagerService.DEFAULT_DIM_DURATION; |
| } |
| } |
| |
| boolean animating = mLastDimAnimTime != 0; |
| if (animating) { |
| mDimCurrentAlpha += mDimDeltaPerMs |
| * (currentTime-mLastDimAnimTime); |
| if (displayFrozen) { |
| // If the display is frozen, there is no reason to animate. |
| animating = false; |
| } else if (mDimDeltaPerMs > 0) { |
| if (mDimCurrentAlpha > mDimTargetAlpha) { |
| animating = false; |
| } |
| } else if (mDimDeltaPerMs < 0) { |
| if (mDimCurrentAlpha < mDimTargetAlpha) { |
| animating = false; |
| } |
| } else { |
| animating = false; |
| } |
| |
| // Do we need to continue animating? |
| if (animating) { |
| if (WindowManagerService.SHOW_TRANSACTIONS) Slog.i(WindowManagerService.TAG, " DIM " |
| + mDimSurface + ": alpha=" + mDimCurrentAlpha); |
| mLastDimAnimTime = currentTime; |
| mDimSurface.setAlpha(mDimCurrentAlpha); |
| } else { |
| mDimCurrentAlpha = mDimTargetAlpha; |
| mLastDimAnimTime = 0; |
| if (WindowManagerService.SHOW_TRANSACTIONS) Slog.i(WindowManagerService.TAG, " DIM " |
| + mDimSurface + ": final alpha=" + mDimCurrentAlpha); |
| mDimSurface.setAlpha(mDimCurrentAlpha); |
| if (!dimming) { |
| if (WindowManagerService.SHOW_TRANSACTIONS) Slog.i(WindowManagerService.TAG, " DIM " + mDimSurface |
| + ": HIDE"); |
| try { |
| mDimSurface.hide(); |
| } catch (RuntimeException e) { |
| Slog.w(WindowManagerService.TAG, "Illegal argument exception hiding dim surface"); |
| } |
| mDimShown = false; |
| } |
| } |
| } |
| return animating; |
| } |
| |
| public void kill() { |
| if (mDimSurface != null) { |
| mDimSurface.destroy(); |
| mDimSurface = null; |
| } |
| } |
| |
| public void printTo(String prefix, PrintWriter pw) { |
| pw.print(prefix); |
| pw.print("mDimSurface="); pw.print(mDimSurface); |
| pw.print(" "); pw.print(mLastDimWidth); pw.print(" x "); |
| pw.println(mLastDimHeight); |
| pw.print(prefix); |
| pw.print("mDimShown="); pw.print(mDimShown); |
| pw.print(" current="); pw.print(mDimCurrentAlpha); |
| pw.print(" target="); pw.print(mDimTargetAlpha); |
| pw.print(" delta="); pw.print(mDimDeltaPerMs); |
| pw.print(" lastAnimTime="); pw.println(mLastDimAnimTime); |
| } |
| |
| static class Parameters { |
| final WindowStateAnimator mDimWinAnimator; |
| final int mDimWidth; |
| final int mDimHeight; |
| final float mDimTarget; |
| Parameters(final WindowStateAnimator dimWinAnimator, final int dimWidth, |
| final int dimHeight, final float dimTarget) { |
| mDimWinAnimator = dimWinAnimator; |
| mDimWidth = dimWidth; |
| mDimHeight = dimHeight; |
| mDimTarget = dimTarget; |
| } |
| |
| Parameters(Parameters o) { |
| mDimWinAnimator = o.mDimWinAnimator; |
| mDimWidth = o.mDimWidth; |
| mDimHeight = o.mDimHeight; |
| mDimTarget = o.mDimTarget; |
| } |
| |
| public void printTo(String prefix, PrintWriter pw) { |
| pw.print(prefix); |
| pw.print("mDimWinAnimator="); pw.print(mDimWinAnimator.mWin.mAttrs.getTitle()); |
| pw.print(" "); pw.print(mDimWidth); pw.print(" x "); |
| pw.print(mDimHeight); |
| pw.print(" mDimTarget="); pw.println(mDimTarget); |
| } |
| } |
| } |
