Add path support into xml files for PathInterpolator and ObjectAnimator.

The test case is showing that AnimatedVectorDrawable is able to use path to
define time interpolator and object movement now.

Change-Id: If3c0418265d0fd762c8f5f0bb8c39cce3ad34ef3

1 files changed, 32 insertions, 20 deletions

diff --git a/core/java/android/view/animation/PathInterpolator.java b/core/java/android/view/animation/PathInterpolator.java
index da12ffb..945ecf0 100644
--- a/core/java/android/view/animation/PathInterpolator.java
+++ b/core/java/android/view/animation/PathInterpolator.java
@@ -21,6 +21,7 @@ import android.content.res.Resources.Theme;
 import android.content.res.TypedArray;
 import android.graphics.Path;
 import android.util.AttributeSet;
+import android.util.PathParser;
 import android.view.InflateException;
 
 import com.android.internal.R;
@@ -102,28 +103,40 @@ public class PathInterpolator implements Interpolator {
     }
 
     private void parseInterpolatorFromTypeArray(TypedArray a) {
-        if (!a.hasValue(R.styleable.PathInterpolator_controlX1)) {
-            throw new InflateException("pathInterpolator requires the controlX1 attribute");
-        } else if (!a.hasValue(R.styleable.PathInterpolator_controlY1)) {
-            throw new InflateException("pathInterpolator requires the controlY1 attribute");
-        }
-        float x1 = a.getFloat(R.styleable.PathInterpolator_controlX1, 0);
-        float y1 = a.getFloat(R.styleable.PathInterpolator_controlY1, 0);
+        // If there is pathData defined in the xml file, then the controls points
+        // will be all coming from pathData.
+        if (a.hasValue(R.styleable.PathInterpolator_pathData)) {
+            String pathData = a.getString(R.styleable.PathInterpolator_pathData);
+            Path path = PathParser.createPathFromPathData(pathData);
+            if (path == null) {
+                throw new InflateException("The path is null, which is created"
+                        + " from " + pathData);
+            }
+            initPath(path);
+        } else {
+            if (!a.hasValue(R.styleable.PathInterpolator_controlX1)) {
+                throw new InflateException("pathInterpolator requires the controlX1 attribute");
+            } else if (!a.hasValue(R.styleable.PathInterpolator_controlY1)) {
+                throw new InflateException("pathInterpolator requires the controlY1 attribute");
+            }
+            float x1 = a.getFloat(R.styleable.PathInterpolator_controlX1, 0);
+            float y1 = a.getFloat(R.styleable.PathInterpolator_controlY1, 0);
 
-        boolean hasX2 = a.hasValue(R.styleable.PathInterpolator_controlX2);
-        boolean hasY2 = a.hasValue(R.styleable.PathInterpolator_controlY2);
+            boolean hasX2 = a.hasValue(R.styleable.PathInterpolator_controlX2);
+            boolean hasY2 = a.hasValue(R.styleable.PathInterpolator_controlY2);
 
-        if (hasX2 != hasY2) {
-            throw new InflateException(
-                    "pathInterpolator requires both controlX2 and controlY2 for cubic Beziers.");
-        }
+            if (hasX2 != hasY2) {
+                throw new InflateException(
+                        "pathInterpolator requires both controlX2 and controlY2 for cubic Beziers.");
+            }
 
-        if (!hasX2) {
-            initQuad(x1, y1);
-        } else {
-            float x2 = a.getFloat(R.styleable.PathInterpolator_controlX2, 0);
-            float y2 = a.getFloat(R.styleable.PathInterpolator_controlY2, 0);
-            initCubic(x1, y1, x2, y2);
+            if (!hasX2) {
+                initQuad(x1, y1);
+            } else {
+                float x2 = a.getFloat(R.styleable.PathInterpolator_controlX2, 0);
+                float y2 = a.getFloat(R.styleable.PathInterpolator_controlY2, 0);
+                initCubic(x1, y1, x2, y2);
+            }
         }
     }
 
@@ -216,5 +229,4 @@ public class PathInterpolator implements Interpolator {
         float endY = mY[endIndex];
         return startY + (fraction * (endY - startY));
     }
-
 }