From 7916ac65dc492e4e1431879875c77d7121fbf82e Mon Sep 17 00:00:00 2001
From: Dianne Hackborn <hackbod@google.com>
Date: Mon, 16 May 2011 20:45:48 -0700
Subject: Add new command line option to change global screen size.

For example:

adb shell am display-size 1024x600

Change-Id: I5df462acd3323bdaaaefa3126faea7dd8595b726
---
 .../java/com/android/server/wm/BlackFrame.java     | 139 +++++++++++++++
 .../android/server/wm/ScreenRotationAnimation.java |  72 ++------
 .../android/server/wm/WindowManagerService.java    | 192 +++++++++++++++++----
 3 files changed, 308 insertions(+), 95 deletions(-)
 create mode 100644 services/java/com/android/server/wm/BlackFrame.java

(limited to 'services')

diff --git a/services/java/com/android/server/wm/BlackFrame.java b/services/java/com/android/server/wm/BlackFrame.java
new file mode 100644
index 0000000..f9f5758
--- /dev/null
+++ b/services/java/com/android/server/wm/BlackFrame.java
@@ -0,0 +1,139 @@
+/*
+ * 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.graphics.Matrix;
+import android.graphics.PixelFormat;
+import android.graphics.Rect;
+import android.util.Slog;
+import android.view.Surface;
+import android.view.SurfaceSession;
+
+/**
+ * Four black surfaces put together to make a black frame.
+ */
+public class BlackFrame {
+    class BlackSurface {
+        final int left;
+        final int top;
+        final Surface surface;
+
+        BlackSurface(SurfaceSession session, int layer, int l, int t, int w, int h)
+                throws Surface.OutOfResourcesException {
+            left = l;
+            top = t;
+            surface = new Surface(session, 0, "BlackSurface",
+                    -1, w, h, PixelFormat.OPAQUE, Surface.FX_SURFACE_DIM);
+            surface.setAlpha(1.0f);
+            surface.setLayer(layer);
+        }
+
+        void setMatrix(Matrix matrix) {
+            mTmpMatrix.setTranslate(left, top);
+            mTmpMatrix.postConcat(matrix);
+            mTmpMatrix.getValues(mTmpFloats);
+            surface.setPosition((int)mTmpFloats[Matrix.MTRANS_X],
+                    (int)mTmpFloats[Matrix.MTRANS_Y]);
+            surface.setMatrix(
+                    mTmpFloats[Matrix.MSCALE_X], mTmpFloats[Matrix.MSKEW_Y],
+                    mTmpFloats[Matrix.MSKEW_X], mTmpFloats[Matrix.MSCALE_Y]);
+            if (false) {
+                Slog.i(WindowManagerService.TAG, "Black Surface @ (" + left + "," + top + "): ("
+                        + mTmpFloats[Matrix.MTRANS_X] + ","
+                        + mTmpFloats[Matrix.MTRANS_Y] + ") matrix=["
+                        + mTmpFloats[Matrix.MSCALE_X] + ","
+                        + mTmpFloats[Matrix.MSCALE_Y] + "]["
+                        + mTmpFloats[Matrix.MSKEW_X] + ","
+                        + mTmpFloats[Matrix.MSKEW_Y] + "]");
+            }
+        }
+
+        void clearMatrix() {
+            surface.setMatrix(1, 0, 0, 1);
+        }
+    }
+
+    final Matrix mTmpMatrix = new Matrix();
+    final float[] mTmpFloats = new float[9];
+    final BlackSurface[] mBlackSurfaces = new BlackSurface[4];
+
+    public BlackFrame(SurfaceSession session, Rect outer, Rect inner,
+            int layer) throws Surface.OutOfResourcesException {
+        boolean success = false;
+
+        try {
+            if (outer.top < inner.top) {
+                mBlackSurfaces[0] = new BlackSurface(session, layer,
+                        outer.left, outer.top, inner.right, inner.top);
+            }
+            if (outer.left < inner.left) {
+                mBlackSurfaces[1] = new BlackSurface(session, layer,
+                        outer.left, inner.top, inner.left, outer.bottom);
+            }
+            if (outer.bottom > inner.bottom) {
+                mBlackSurfaces[2] = new BlackSurface(session, layer,
+                        inner.left, inner.bottom, outer.right, outer.bottom);
+            }
+            if (outer.right > inner.right) {
+                mBlackSurfaces[3] = new BlackSurface(session, layer,
+                        inner.right, outer.top, outer.right, inner.bottom);
+            }
+            success = true;
+        } finally {
+            if (!success) {
+                kill();
+            }
+        }
+    }
+
+    public void kill() {
+        if (mBlackSurfaces != null) {
+            for (int i=0; i<mBlackSurfaces.length; i++) {
+                if (mBlackSurfaces[i] != null) {
+                    mBlackSurfaces[i].surface.destroy();
+                    mBlackSurfaces[i] = null;
+                }
+            }
+        }
+    }
+
+    public void hide() {
+        if (mBlackSurfaces != null) {
+            for (int i=0; i<mBlackSurfaces.length; i++) {
+                if (mBlackSurfaces[i] != null) {
+                    mBlackSurfaces[i].surface.hide();
+                }
+            }
+        }
+    }
+
+    public void setMatrix(Matrix matrix) {
+        for (int i=0; i<mBlackSurfaces.length; i++) {
+            if (mBlackSurfaces[i] != null) {
+                mBlackSurfaces[i].setMatrix(matrix);
+            }
+        }
+    }
+
+    public void clearMatrix() {
+        for (int i=0; i<mBlackSurfaces.length; i++) {
+            if (mBlackSurfaces[i] != null) {
+                mBlackSurfaces[i].clearMatrix();
+            }
+        }
+    }
+}
diff --git a/services/java/com/android/server/wm/ScreenRotationAnimation.java b/services/java/com/android/server/wm/ScreenRotationAnimation.java
index fbf1ec3..bb01633 100644
--- a/services/java/com/android/server/wm/ScreenRotationAnimation.java
+++ b/services/java/com/android/server/wm/ScreenRotationAnimation.java
@@ -19,7 +19,6 @@ package com.android.server.wm;
 import android.content.Context;
 import android.graphics.Bitmap;
 import android.graphics.Canvas;
-import android.graphics.Color;
 import android.graphics.Matrix;
 import android.graphics.Paint;
 import android.graphics.PixelFormat;
@@ -41,46 +40,10 @@ class ScreenRotationAnimation {
 
     static final int FREEZE_LAYER = WindowManagerService.TYPE_LAYER_MULTIPLIER * 200;
 
-    class BlackSurface {
-        final int left;
-        final int top;
-        final Surface surface;
-
-        BlackSurface(SurfaceSession session, int layer, int l, int t, int w, int h)
-                throws Surface.OutOfResourcesException {
-            left = l;
-            top = t;
-            surface = new Surface(session, 0, "BlackSurface",
-                    -1, w, h, PixelFormat.OPAQUE, Surface.FX_SURFACE_DIM);
-            surface.setAlpha(1.0f);
-            surface.setLayer(FREEZE_LAYER);
-        }
-
-        void setMatrix(Matrix matrix) {
-            mTmpMatrix.setTranslate(left, top);
-            mTmpMatrix.postConcat(matrix);
-            mTmpMatrix.getValues(mTmpFloats);
-            surface.setPosition((int)mTmpFloats[Matrix.MTRANS_X],
-                    (int)mTmpFloats[Matrix.MTRANS_Y]);
-            surface.setMatrix(
-                    mTmpFloats[Matrix.MSCALE_X], mTmpFloats[Matrix.MSKEW_Y],
-                    mTmpFloats[Matrix.MSKEW_X], mTmpFloats[Matrix.MSCALE_Y]);
-            if (false) {
-                Slog.i(TAG, "Black Surface @ (" + left + "," + top + "): ("
-                        + mTmpFloats[Matrix.MTRANS_X] + ","
-                        + mTmpFloats[Matrix.MTRANS_Y] + ") matrix=["
-                        + mTmpFloats[Matrix.MSCALE_X] + ","
-                        + mTmpFloats[Matrix.MSCALE_Y] + "]["
-                        + mTmpFloats[Matrix.MSKEW_X] + ","
-                        + mTmpFloats[Matrix.MSKEW_Y] + "]");
-            }
-        }
-    }
-
     final Context mContext;
     final Display mDisplay;
     Surface mSurface;
-    BlackSurface[] mBlackSurfaces;
+    BlackFrame mBlackFrame;
     int mWidth, mHeight;
 
     int mSnapshotRotation;
@@ -302,14 +265,12 @@ class ScreenRotationAnimation {
                 ">>> OPEN TRANSACTION ScreenRotationAnimation.dismiss");
         Surface.openTransaction();
 
-        mBlackSurfaces = new BlackSurface[4];
         try {
             final int w = mDisplayMetrics.widthPixels;
             final int h = mDisplayMetrics.heightPixels;
-            mBlackSurfaces[0] = new BlackSurface(session, FREEZE_LAYER, -w, -h, w, h*2);
-            mBlackSurfaces[1] = new BlackSurface(session, FREEZE_LAYER, 0, -h, w*2, h);
-            mBlackSurfaces[2] = new BlackSurface(session, FREEZE_LAYER, w, 0, w, h*2);
-            mBlackSurfaces[3] = new BlackSurface(session, FREEZE_LAYER, -w, h, w*2, h);
+            Rect outer = new Rect(-w, -h, w*2, h*2);
+            Rect inner = new Rect(0, 0, w, h);
+            mBlackFrame = new BlackFrame(session, outer, inner, FREEZE_LAYER);
         } catch (Surface.OutOfResourcesException e) {
             Slog.w(TAG, "Unable to allocate black surface", e);
         } finally {
@@ -326,13 +287,8 @@ class ScreenRotationAnimation {
             mSurface.destroy();
             mSurface = null;
         }
-        if (mBlackSurfaces != null) {
-            for (int i=0; i<mBlackSurfaces.length; i++) {
-                if (mBlackSurfaces[i] != null) {
-                    mBlackSurfaces[i].surface.destroy();
-                }
-            }
-            mBlackSurfaces = null;
+        if (mBlackFrame != null) {
+            mBlackFrame.kill();
         }
         if (mExitAnimation != null) {
             mExitAnimation.cancel();
@@ -383,20 +339,12 @@ class ScreenRotationAnimation {
                 mEnterAnimation.cancel();
                 mEnterAnimation = null;
                 mEnterTransformation.clear();
-                if (mBlackSurfaces != null) {
-                    for (int i=0; i<mBlackSurfaces.length; i++) {
-                        if (mBlackSurfaces[i] != null) {
-                            mBlackSurfaces[i].surface.hide();
-                        }
-                    }
+                if (mBlackFrame != null) {
+                    mBlackFrame.hide();
                 }
             } else {
-                if (mBlackSurfaces != null) {
-                    for (int i=0; i<mBlackSurfaces.length; i++) {
-                        if (mBlackSurfaces[i] != null) {
-                            mBlackSurfaces[i].setMatrix(mEnterTransformation.getMatrix());
-                        }
-                    }
+                if (mBlackFrame != null) {
+                    mBlackFrame.setMatrix(mEnterTransformation.getMatrix());
                 }
             }
         }
diff --git a/services/java/com/android/server/wm/WindowManagerService.java b/services/java/com/android/server/wm/WindowManagerService.java
index 992ab3b..6103b0f 100644
--- a/services/java/com/android/server/wm/WindowManagerService.java
+++ b/services/java/com/android/server/wm/WindowManagerService.java
@@ -190,6 +190,16 @@ public class WindowManagerService extends IWindowManager.Stub
      */
     static final int LAYER_OFFSET_BLUR = 2;
 
+    /**
+     * Layer at which to put the rotation freeze snapshot.
+     */
+    static final int FREEZE_LAYER = (TYPE_LAYER_MULTIPLIER * 200) + 1;
+
+    /**
+     * Layer at which to put the mask for emulated screen sizes.
+     */
+    static final int MASK_LAYER = TYPE_LAYER_MULTIPLIER * 200;
+
     /** The maximum length we will accept for a loaded animation duration:
      * this is 10 seconds.
      */
@@ -383,6 +393,8 @@ public class WindowManagerService extends IWindowManager.Stub
     StrictModeFlash mStrictModeFlash;
     ScreenRotationAnimation mScreenRotationAnimation;
 
+    BlackFrame mBlackFrame;
+
     int mTransactionSequence = 0;
 
     final float[] mTmpFloats = new float[9];
@@ -392,6 +404,8 @@ public class WindowManagerService extends IWindowManager.Stub
     boolean mSystemBooted = false;
     int mInitialDisplayWidth = 0;
     int mInitialDisplayHeight = 0;
+    int mBaseDisplayWidth = 0;
+    int mBaseDisplayHeight = 0;
     int mCurDisplayWidth = 0;
     int mCurDisplayHeight = 0;
     int mRotation = 0;
@@ -3264,36 +3278,46 @@ public class WindowManagerService extends IWindowManager.Stub
         long ident = Binder.clearCallingIdentity();
         
         synchronized(mWindowMap) {
-            if (updateOrientationFromAppTokensLocked(false)) {
-                if (freezeThisOneIfNeeded != null) {
-                    AppWindowToken wtoken = findAppWindowToken(
-                            freezeThisOneIfNeeded);
-                    if (wtoken != null) {
-                        startAppFreezingScreenLocked(wtoken,
-                                ActivityInfo.CONFIG_ORIENTATION);
-                    }
-                }
-                config = computeNewConfigurationLocked();
-                
-            } else if (currentConfig != null) {
-                // No obvious action we need to take, but if our current
-                // state mismatches the activity manager's, update it,
-                // disregarding font scale, which should remain set to
-                // the value of the previous configuration.
-                mTempConfiguration.setToDefaults();
-                mTempConfiguration.fontScale = currentConfig.fontScale;
-                if (computeNewConfigurationLocked(mTempConfiguration)) {
-                    if (currentConfig.diff(mTempConfiguration) != 0) {
-                        mWaitingForConfig = true;
-                        mLayoutNeeded = true;
-                        startFreezingDisplayLocked(false);
-                        config = new Configuration(mTempConfiguration);
-                    }
+            config = updateOrientationFromAppTokensLocked(currentConfig,
+                    freezeThisOneIfNeeded);
+        }
+
+        Binder.restoreCallingIdentity(ident);
+        return config;
+    }
+
+    private Configuration updateOrientationFromAppTokensLocked(
+            Configuration currentConfig, IBinder freezeThisOneIfNeeded) {
+        Configuration config = null;
+
+        if (updateOrientationFromAppTokensLocked(false)) {
+            if (freezeThisOneIfNeeded != null) {
+                AppWindowToken wtoken = findAppWindowToken(
+                        freezeThisOneIfNeeded);
+                if (wtoken != null) {
+                    startAppFreezingScreenLocked(wtoken,
+                            ActivityInfo.CONFIG_ORIENTATION);
+                }
+            }
+            config = computeNewConfigurationLocked();
+
+        } else if (currentConfig != null) {
+            // No obvious action we need to take, but if our current
+            // state mismatches the activity manager's, update it,
+            // disregarding font scale, which should remain set to
+            // the value of the previous configuration.
+            mTempConfiguration.setToDefaults();
+            mTempConfiguration.fontScale = currentConfig.fontScale;
+            if (computeNewConfigurationLocked(mTempConfiguration)) {
+                if (currentConfig.diff(mTempConfiguration) != 0) {
+                    mWaitingForConfig = true;
+                    mLayoutNeeded = true;
+                    startFreezingDisplayLocked(false);
+                    config = new Configuration(mTempConfiguration);
                 }
             }
         }
         
-        Binder.restoreCallingIdentity(ident);
         return config;
     }
 
@@ -5042,6 +5066,7 @@ public class WindowManagerService extends IWindowManager.Stub
                 } else {
                     Surface.setOrientation(0, rotation, animFlags);
                 }
+                rebuildBlackFrame(inTransaction);
             }
 
             for (int i=mWindows.size()-1; i>=0; i--) {
@@ -5484,8 +5509,8 @@ public class WindowManagerService extends IWindowManager.Stub
         // Use the effective "visual" dimensions based on current rotation
         final boolean rotated = (mRotation == Surface.ROTATION_90
                 || mRotation == Surface.ROTATION_270);
-        final int realdw = rotated ? mInitialDisplayHeight : mInitialDisplayWidth;
-        final int realdh = rotated ? mInitialDisplayWidth : mInitialDisplayHeight;
+        final int realdw = rotated ? mBaseDisplayHeight : mBaseDisplayWidth;
+        final int realdh = rotated ? mBaseDisplayWidth : mBaseDisplayHeight;
 
         if (mAltOrientation) {
             mCurDisplayWidth = realdw;
@@ -5922,8 +5947,18 @@ public class WindowManagerService extends IWindowManager.Stub
             }
             WindowManager wm = (WindowManager)mContext.getSystemService(Context.WINDOW_SERVICE);
             mDisplay = wm.getDefaultDisplay();
-            mInitialDisplayWidth = mCurDisplayWidth = mDisplay.getRealWidth();
-            mInitialDisplayHeight = mCurDisplayHeight = mDisplay.getRealHeight();
+            mInitialDisplayWidth = mDisplay.getRealWidth();
+            mInitialDisplayHeight = mDisplay.getRealHeight();
+            int rot = mDisplay.getRotation();
+            if (rot == Surface.ROTATION_90 || rot == Surface.ROTATION_270) {
+                // If the screen is currently rotated, we need to swap the
+                // initial width and height to get the true natural values.
+                int tmp = mInitialDisplayWidth;
+                mInitialDisplayWidth = mInitialDisplayHeight;
+                mInitialDisplayHeight = tmp;
+            }
+            mBaseDisplayWidth = mCurDisplayWidth = mInitialDisplayWidth;
+            mBaseDisplayHeight = mCurDisplayHeight = mInitialDisplayHeight;
             mInputManager.setDisplaySize(0, mDisplay.getRawWidth(), mDisplay.getRawHeight());
             mPolicy.setInitialDisplaySize(mInitialDisplayWidth, mInitialDisplayHeight);
         }
@@ -6429,8 +6464,88 @@ public class WindowManagerService extends IWindowManager.Stub
     public int getMaximumSizeDimension() {
         synchronized(mWindowMap) {
             // Do this based on the raw screen size, until we are smarter.
-            return mInitialDisplayWidth > mInitialDisplayHeight
-                    ? mInitialDisplayWidth : mInitialDisplayHeight;
+            return mBaseDisplayWidth > mBaseDisplayHeight
+                    ? mBaseDisplayWidth : mBaseDisplayHeight;
+        }
+    }
+
+    public void setForcedDisplaySize(int longDimen, int shortDimen) {
+        synchronized(mWindowMap) {
+            int width, height;
+            if (mInitialDisplayWidth < mInitialDisplayHeight) {
+                width = shortDimen < mInitialDisplayWidth
+                        ? shortDimen : mInitialDisplayWidth;
+                height = longDimen < mInitialDisplayHeight
+                        ? longDimen : mInitialDisplayHeight;
+            } else {
+                width = longDimen < mInitialDisplayWidth
+                        ? longDimen : mInitialDisplayWidth;
+                height = shortDimen < mInitialDisplayHeight
+                        ? shortDimen : mInitialDisplayHeight;
+            }
+            setForcedDisplaySizeLocked(width, height);
+        }
+    }
+
+    private void rebuildBlackFrame(boolean inTransaction) {
+        if (!inTransaction) {
+            if (SHOW_TRANSACTIONS) Slog.i(TAG,
+                    ">>> OPEN TRANSACTION rebuildBlackFrame");
+            Surface.openTransaction();
+        }
+        try {
+            if (mBlackFrame != null) {
+                mBlackFrame.kill();
+                mBlackFrame = null;
+            }
+            if (mBaseDisplayWidth < mInitialDisplayWidth
+                    || mBaseDisplayHeight < mInitialDisplayHeight) {
+                Rect outer = new Rect(0, 0, mInitialDisplayWidth, mInitialDisplayHeight);
+                Rect inner = new Rect(0, 0, mBaseDisplayWidth, mBaseDisplayHeight);
+                try {
+                    mBlackFrame = new BlackFrame(mFxSession, outer, inner, MASK_LAYER);
+                } catch (Surface.OutOfResourcesException e) {
+                }
+            }
+        } finally {
+            if (!inTransaction) {
+                Surface.closeTransaction();
+                if (SHOW_TRANSACTIONS) Slog.i(TAG,
+                        "<<< CLOSE TRANSACTION rebuildBlackFrame");
+            }
+        }
+    }
+
+    private void setForcedDisplaySizeLocked(int width, int height) {
+        mBaseDisplayWidth = width;
+        mBaseDisplayHeight = height;
+        mPolicy.setInitialDisplaySize(mBaseDisplayWidth, mBaseDisplayHeight);
+
+        mLayoutNeeded = true;
+
+        boolean configChanged = updateOrientationFromAppTokensLocked(false);
+        mTempConfiguration.setToDefaults();
+        mTempConfiguration.fontScale = mCurConfiguration.fontScale;
+        if (computeNewConfigurationLocked(mTempConfiguration)) {
+            if (mCurConfiguration.diff(mTempConfiguration) != 0) {
+                configChanged = true;
+            }
+        }
+
+        if (configChanged) {
+            mWaitingForConfig = true;
+            startFreezingDisplayLocked(false);
+            mH.sendEmptyMessage(H.SEND_NEW_CONFIGURATION);
+        }
+
+        rebuildBlackFrame(false);
+
+        performLayoutAndPlaceSurfacesLocked();
+    }
+
+    public void clearForcedDisplaySize() {
+        synchronized(mWindowMap) {
+            setForcedDisplaySizeLocked(mInitialDisplayWidth, mInitialDisplayHeight);
         }
     }
 
@@ -7983,6 +8098,15 @@ public class WindowManagerService extends IWindowManager.Stub
                 }
                 mBlurShown = false;
             }
+
+            if (mBlackFrame != null) {
+                if (mScreenRotationAnimation != null) {
+                    mBlackFrame.setMatrix(
+                            mScreenRotationAnimation.getEnterTransformation().getMatrix());
+                } else {
+                    mBlackFrame.clearMatrix();
+                }
+            }
         } catch (RuntimeException e) {
             Slog.e(TAG, "Unhandled exception in Window Manager", e);
         }
@@ -8836,7 +8960,9 @@ public class WindowManagerService extends IWindowManager.Stub
             }
             if (mDisplay != null) {
                 pw.print("  Display: init="); pw.print(mInitialDisplayWidth); pw.print("x");
-                        pw.print(mInitialDisplayHeight); pw.print(" cur=");
+                        pw.print(mInitialDisplayHeight); pw.print(" base=");
+                        pw.print(mBaseDisplayWidth); pw.print("x"); pw.print(mBaseDisplayHeight);
+                        pw.print(" cur=");
                         pw.print(mCurDisplayWidth); pw.print("x"); pw.print(mCurDisplayHeight);
                         pw.print(" real="); pw.print(mDisplay.getRealWidth());
                         pw.print("x"); pw.print(mDisplay.getRealHeight());
-- 
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