From 3307958c6b4b3707c8861db829893b1f5820b677 Mon Sep 17 00:00:00 2001
From: Adam Powell <adamp@google.com>
Date: Tue, 9 Oct 2012 11:20:39 -0700
Subject: [PATCH] Allow more scaling values to be tuned in resource overlays

Bug 7267507

Change-Id: I3fba6882a0ac4cb7d34430ba36dec83c030a73cd
---
 core/java/android/view/ScaleGestureDetector.java | 9 ++++++---
 core/res/res/values/config.xml                   | 4 ++++
 core/res/res/values/symbols.xml                  | 1 +
 3 files changed, 11 insertions(+), 3 deletions(-)

diff --git a/core/java/android/view/ScaleGestureDetector.java b/core/java/android/view/ScaleGestureDetector.java
index a74e438c07f4c..ee3f5d8e266b3 100644
--- a/core/java/android/view/ScaleGestureDetector.java
+++ b/core/java/android/view/ScaleGestureDetector.java
@@ -17,6 +17,7 @@
 package android.view;
 
 import android.content.Context;
+import android.content.res.Resources;
 import android.os.SystemClock;
 import android.util.FloatMath;
 
@@ -162,9 +163,11 @@ public class ScaleGestureDetector {
         mContext = context;
         mListener = listener;
         mSpanSlop = ViewConfiguration.get(context).getScaledTouchSlop() * 2;
-        mTouchMinMajor =
-                (int) (context.getResources().getDisplayMetrics().density * TOUCH_MIN_MAJOR + 0.5f);
-        mMinSpan = context.getResources().getDimensionPixelSize(
+
+        final Resources res = context.getResources();
+        mTouchMinMajor = res.getDimensionPixelSize(
+                com.android.internal.R.dimen.config_minScalingTouchMajor);
+        mMinSpan = res.getDimensionPixelSize(
                 com.android.internal.R.dimen.config_minScalingSpan);
     }
 
diff --git a/core/res/res/values/config.xml b/core/res/res/values/config.xml
index 16960c8737039..06560b23ab1e7 100755
--- a/core/res/res/values/config.xml
+++ b/core/res/res/values/config.xml
@@ -941,6 +941,10 @@
          reported by the hardware. -->
     <dimen name="config_minScalingSpan">27mm</dimen>
 
+    <!-- Minimum accepted value for touchMajor while scaling. This may be tuned
+         per-device in overlays. -->
+    <dimen name="config_minScalingTouchMajor">48dp</dimen>
+
     <!-- Safe headphone volume index. When music stream volume is below this index
     the SPL on headphone output is compliant to EN 60950 requirements for portable music
     players. -->
diff --git a/core/res/res/values/symbols.xml b/core/res/res/values/symbols.xml
index 281d92ade7357..f4a13c119aacf 100644
--- a/core/res/res/values/symbols.xml
+++ b/core/res/res/values/symbols.xml
@@ -1149,6 +1149,7 @@
   <java-symbol type="string" name="bluetooth_a2dp_audio_route_name" />
 
   <java-symbol type="dimen" name="config_minScalingSpan" />
+  <java-symbol type="dimen" name="config_minScalingTouchMajor" />
 
   <!-- From android.policy -->
   <java-symbol type="anim" name="app_starting_exit" />