Fix adjustViewBounds handling for ImageView

When computing the adjusted view bounds, don't constrain the
dimensions by the original estimate if the opposite dimension has a
fixed size. This can result in the view never getting properly
enlarged.

Also fix a long-standing bug in MeasureSpec.makeMeasureSpec where
oversized or negative values could result in broken packed values.

Bug 7240251

Change-Id: I359d108ff52b6f3b5c4bf393d2271d28999c0127

Author: adamp

core/java/android/view/View.java

@@ -17208,7 +17208,7 @@ public static class MeasureSpec {
          * @return the measure specification based on size and mode
          */
         public static int makeMeasureSpec(int size, int mode) {
-            return size + mode;
+            return (size & ~MODE_MASK) | (mode & MODE_MASK);
         }
 
         /**

core/java/android/widget/ImageView.java

@@ -789,6 +789,12 @@ protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
                     if (resizeWidth) {
                         int newWidth = (int)(desiredAspect * (heightSize - ptop - pbottom)) +
                                 pleft + pright;
+
+                        // Allow the width to outgrow its original estimate if height is fixed.
+                        if (!resizeHeight) {
+                            widthSize = resolveAdjustedSize(newWidth, mMaxWidth, widthMeasureSpec);
+                        }
+
                         if (newWidth <= widthSize) {
                             widthSize = newWidth;
                             done = true;
@@ -799,6 +805,13 @@ protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
                     if (!done && resizeHeight) {
                         int newHeight = (int)((widthSize - pleft - pright) / desiredAspect) +
                                 ptop + pbottom;
+
+                        // Allow the height to outgrow its original estimate if width is fixed.
+                        if (!resizeWidth) {
+                            heightSize = resolveAdjustedSize(newHeight, mMaxHeight,
+                                    heightMeasureSpec);
+                        }
+
                         if (newHeight <= heightSize) {
                             heightSize = newHeight;
                         }