Index: chrome/android/java/src/org/chromium/chrome/browser/widget/ClipDrawableProgressBar.java |
diff --git a/chrome/android/java/src/org/chromium/chrome/browser/widget/ClipDrawableProgressBar.java b/chrome/android/java/src/org/chromium/chrome/browser/widget/ClipDrawableProgressBar.java |
new file mode 100644 |
index 0000000000000000000000000000000000000000..234183258f01ce845923bf2a9d74959cba422492 |
--- /dev/null |
+++ b/chrome/android/java/src/org/chromium/chrome/browser/widget/ClipDrawableProgressBar.java |
@@ -0,0 +1,50 @@ |
+// Copyright 2015 The Chromium Authors. All rights reserved. |
+// Use of this source code is governed by a BSD-style license that can be |
+// found in the LICENSE file. |
+ |
+package org.chromium.chrome.browser.widget; |
+ |
+import android.content.Context; |
+import android.util.AttributeSet; |
+import android.widget.ImageView; |
+ |
+/** |
+ * An alternative progress bar implemented using ClipDrawable. We're experimenting with this for |
+ * faster performance. http://crbug.com/455891 |
+ */ |
+public class ClipDrawableProgressBar extends ImageView { |
+ private static final long PROGRESS_CLEARING_DELAY_MS = 200; |
+ |
+ private final Runnable mClearLoadProgressRunnable = new Runnable() { |
+ @Override |
+ public void run() { |
+ setProgress(0); |
+ } |
+ }; |
+ |
+ /** |
+ * Constructor for inflating from XML. |
+ */ |
+ public ClipDrawableProgressBar(Context context, AttributeSet attrs) { |
+ super(context, attrs); |
+ } |
+ |
+ /** |
+ * Set the current progress to the specified value. |
+ * @param progress The new progress, between 0 and 10000. |
+ */ |
+ public void setProgress(int progress) { |
+ getDrawable().setLevel(progress); |
+ |
+ removeCallbacks(mClearLoadProgressRunnable); |
+ if (progress == 10000) postDelayed(mClearLoadProgressRunnable, PROGRESS_CLEARING_DELAY_MS); |
+ } |
+ |
+ /** |
+ * Get the progress bar's current level of progress. |
+ * @return The current progress, between 0 and getMax(). |
+ */ |
+ public int getProgress() { |
+ return getDrawable().getLevel(); |
+ } |
+} |