Add a new field to Intent that allows you to give a hint about what on screen caused the intent to

be sent.

1 files changed, 42 insertions, 0 deletions

diff --git a/graphics/java/android/graphics/Rect.java b/graphics/java/android/graphics/Rect.java
index 42a14ce..98ffb8b 100644
--- a/graphics/java/android/graphics/Rect.java
+++ b/graphics/java/android/graphics/Rect.java
@@ -20,6 +20,8 @@ import android.os.Parcel;
 import android.os.Parcelable;
 
 import java.io.PrintWriter;
+import java.util.regex.Matcher;
+import java.util.regex.Pattern;
 
 /**
  * Rect holds four integer coordinates for a rectangle. The rectangle is
@@ -34,6 +36,9 @@ public final class Rect implements Parcelable {
     public int right;
     public int bottom;
 
+    private static final Pattern FLATTENED_PATTERN = Pattern.compile(
+            "(-?\\d+) (-?\\d+) (-?\\d+) (-?\\d+)");
+
     /**
      * Create a new empty Rect. All coordinates are initialized to 0.
      */
@@ -105,6 +110,43 @@ public final class Rect implements Parcelable {
         sb.append(','); sb.append(bottom); sb.append(']');
         return sb.toString();
     }
+
+    /**
+     * Return a string representation of the rectangle in a well-defined format.
+     *
+     * <p>You can later recover the Rect from this string through
+     * {@link #unflattenFromString(String)}.
+     * 
+     * @return Returns a new String of the form "left top right bottom"
+     */
+    public String flattenToString() {
+        StringBuilder sb = new StringBuilder(32);
+        // WARNING: Do not change the format of this string, it must be
+        // preserved because Rects are saved in this flattened format.
+        sb.append(left);
+        sb.append(' ');
+        sb.append(top);
+        sb.append(' ');
+        sb.append(right);
+        sb.append(' ');
+        sb.append(bottom);
+        return sb.toString();
+    }
+
+    /**
+     * Returns a Rect from a string of the form returned by {@link #flattenToString},
+     * or null if the string is not of that form.
+     */
+    public static Rect unflattenFromString(String str) {
+        Matcher matcher = FLATTENED_PATTERN.matcher(str);
+        if (!matcher.matches()) {
+            return null;
+        }
+        return new Rect(Integer.parseInt(matcher.group(1)),
+                Integer.parseInt(matcher.group(2)),
+                Integer.parseInt(matcher.group(3)),
+                Integer.parseInt(matcher.group(4)));
+    }
     
     /**
      * Print short representation to given writer.