Merge "Compatibility measurement hacks when targetSdkVersion <= JB-MR1"

core/java/android/view/View.java

@@ -40,6 +40,7 @@ import android.graphics.Shader;
 import android.graphics.drawable.ColorDrawable;
 import android.graphics.drawable.Drawable;
 import android.hardware.display.DisplayManagerGlobal;
+import android.os.Build;
 import android.os.Bundle;
 import android.os.Handler;
 import android.os.IBinder;
@@ -688,6 +689,8 @@ public class View implements Drawable.Callback, KeyEvent.Callback,
      */
     public static final int NO_ID = -1;
 
+    private static boolean sUseBrokenMakeMeasureSpec = false;
+
     /**
      * This view does not want keystrokes. Use with TAKES_FOCUS_MASK when
      * calling setFlags.
@@ -3234,6 +3237,12 @@ public class View implements Drawable.Callback, KeyEvent.Callback,
         setOverScrollMode(OVER_SCROLL_IF_CONTENT_SCROLLS);
         mUserPaddingStart = UNDEFINED_PADDING;
         mUserPaddingEnd = UNDEFINED_PADDING;
+
+        if (!sUseBrokenMakeMeasureSpec && context.getApplicationInfo().targetSdkVersion <=
+                Build.VERSION_CODES.JELLY_BEAN_MR1 ) {
+            // Older apps may need this compatibility hack for measurement.
+            sUseBrokenMakeMeasureSpec = true;
+        }
     }
 
     /**
@@ -17328,8 +17337,12 @@ public class View implements Drawable.Callback, KeyEvent.Callback,
          * @return the measure specification based on size and mode
          */
         public static int makeMeasureSpec(int size, int mode) {
+            if (sUseBrokenMakeMeasureSpec) {
+                return size + mode;
+            } else {
                 return (size & ~MODE_MASK) | (mode & MODE_MASK);
             }
+        }
 
         /**
          * Extracts the mode from the supplied measure specification.

core/java/android/widget/ImageView.java

@@ -30,6 +30,7 @@ import android.graphics.RectF;
 import android.graphics.drawable.BitmapDrawable;
 import android.graphics.drawable.Drawable;
 import android.net.Uri;
+import android.os.Build;
 import android.text.TextUtils;
 import android.util.AttributeSet;
 import android.util.Log;
@@ -93,6 +94,9 @@ public class ImageView extends View {
     private int mBaseline = -1;
     private boolean mBaselineAlignBottom = false;
 
+    // AdjustViewBounds behavior will be in compatibility mode for older apps.
+    private boolean mAdjustViewBoundsCompat = false;
+
     private static final ScaleType[] sScaleTypeArray = {
         ScaleType.MATRIX,
         ScaleType.FIT_XY,
@@ -167,6 +171,8 @@ public class ImageView extends View {
     private void initImageView() {
         mMatrix     = new Matrix();
         mScaleType  = ScaleType.FIT_CENTER;
+        mAdjustViewBoundsCompat = mContext.getApplicationInfo().targetSdkVersion <=
+                Build.VERSION_CODES.JELLY_BEAN_MR1;
     }
 
     @Override
@@ -801,7 +807,7 @@ public class ImageView extends View {
                                 pleft + pright;
 
                         // Allow the width to outgrow its original estimate if height is fixed.
-                        if (!resizeHeight) {
+                        if (!resizeHeight && !mAdjustViewBoundsCompat) {
                             widthSize = resolveAdjustedSize(newWidth, mMaxWidth, widthMeasureSpec);
                         }
 
@@ -817,7 +823,7 @@ public class ImageView extends View {
                                 ptop + pbottom;
 
                         // Allow the height to outgrow its original estimate if width is fixed.
-                        if (!resizeWidth) {
+                        if (!resizeWidth && !mAdjustViewBoundsCompat) {
                             heightSize = resolveAdjustedSize(newHeight, mMaxHeight,
                                     heightMeasureSpec);
                         }

core/java/android/widget/RelativeLayout.java

@@ -29,6 +29,7 @@ import android.content.Context;
 import android.content.res.Resources;
 import android.content.res.TypedArray;
 import android.graphics.Rect;
+import android.os.Build;
 import android.util.AttributeSet;
 import android.util.Pools.SimplePool;
 import android.util.SparseArray;
@@ -199,18 +200,29 @@ public class RelativeLayout extends ViewGroup {
     private View[] mSortedVerticalChildren = new View[0];
     private final DependencyGraph mGraph = new DependencyGraph();
 
+    // Compatibility hack. Old versions of the platform had problems
+    // with MeasureSpec value overflow and RelativeLayout was one source of them.
+    // Some apps came to rely on them. :(
+    private boolean mAllowBrokenMeasureSpecs = false;
+
     public RelativeLayout(Context context) {
         super(context);
+        mAllowBrokenMeasureSpecs = context.getApplicationInfo().targetSdkVersion <=
+                Build.VERSION_CODES.JELLY_BEAN_MR1;
     }
 
     public RelativeLayout(Context context, AttributeSet attrs) {
         super(context, attrs);
         initFromAttributes(context, attrs);
+        mAllowBrokenMeasureSpecs = context.getApplicationInfo().targetSdkVersion <=
+                Build.VERSION_CODES.JELLY_BEAN_MR1;
     }
 
     public RelativeLayout(Context context, AttributeSet attrs, int defStyle) {
         super(context, attrs, defStyle);
         initFromAttributes(context, attrs);
+        mAllowBrokenMeasureSpecs = context.getApplicationInfo().targetSdkVersion <=
+                Build.VERSION_CODES.JELLY_BEAN_MR1;
     }
 
     private void initFromAttributes(Context context, AttributeSet attrs) {
@@ -670,7 +682,7 @@ public class RelativeLayout extends ViewGroup {
                 mPaddingLeft, mPaddingRight,
                 myWidth);
         int childHeightMeasureSpec;
-        if (myHeight < 0) {
+        if (myHeight < 0 && !mAllowBrokenMeasureSpecs) {
             // Negative values in a mySize/myWidth/myWidth value in RelativeLayout measurement
             // is code for, "we got an unspecified mode in the RelativeLayout's measurespec."
             // Carry it forward.
@@ -702,7 +714,7 @@ public class RelativeLayout extends ViewGroup {
     private int getChildMeasureSpec(int childStart, int childEnd,
             int childSize, int startMargin, int endMargin, int startPadding,
             int endPadding, int mySize) {
-        if (mySize < 0) {
+        if (mySize < 0 && !mAllowBrokenMeasureSpecs) {
             // Negative values in a mySize/myWidth/myWidth value in RelativeLayout measurement
             // is code for, "we got an unspecified mode in the RelativeLayout's measurespec."
             // Carry it forward.