The Tor Browser: comparison mobile/android/base/toolbar/ToolbarProgressView.java

--1:000000000000
+:59d47a6b1b66
+/*
+* Copyright (C) 2010 The Android Open Source Project
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*      http://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*/
+package org.mozilla.gecko.toolbar;
+import android.content.Context;
+import android.graphics.Canvas;
+import android.graphics.Rect;
+import android.graphics.drawable.Drawable;
+import android.os.Build;
+import android.os.Handler;
+import android.os.Message;
+import android.util.AttributeSet;
+import android.widget.ImageView;
+import android.view.View;
+import android.view.animation.Animation;
+/**
+* Progress view used for page loads.
+*
+* Because we're given limited information about the page load progress, the
+* bar also includes incremental animation between each step to improve
+* perceived performance.
+*/
+public class ToolbarProgressView extends ImageView {
+private static final int MAX_PROGRESS = 10000;
+private static final int MSG_UPDATE = 0;
+private static final int MSG_HIDE = 1;
+private static final int STEPS = 10;
+private static final int DELAY = 40;
+private static final boolean PRE_HONEYCOMB = Build.VERSION.SDK_INT < Build.VERSION_CODES.HONEYCOMB;
+private int mTargetProgress;
+private int mIncrement;
+private Rect mBounds;
+private Handler mHandler;
+private int mCurrentProgress;
+public ToolbarProgressView(Context context, AttributeSet attrs, int defStyle) {
+super(context, attrs, defStyle);
+init(context);
+}
+public ToolbarProgressView(Context context, AttributeSet attrs) {
+super(context, attrs);
+init(context);
+}
+public ToolbarProgressView(Context context) {
+super(context);
+init(context);
+}
+private void init(Context ctx) {
+mBounds = new Rect(0,0,0,0);
+mTargetProgress = 0;
+mHandler = new Handler() {
+@Override
+public void handleMessage(Message msg) {
+switch (msg.what) {
+case MSG_UPDATE:
+mCurrentProgress = Math.min(mTargetProgress, mCurrentProgress + mIncrement);
+updateBounds();
+if (mCurrentProgress < mTargetProgress) {
+final int delay = (mTargetProgress < MAX_PROGRESS) ? DELAY : DELAY / 4;
+sendMessageDelayed(mHandler.obtainMessage(msg.what), delay);
+} else if (mCurrentProgress == MAX_PROGRESS) {
+sendMessageDelayed(mHandler.obtainMessage(MSG_HIDE), DELAY);
+}
+break;
+case MSG_HIDE:
+setVisibility(View.GONE);
+break;
+}
+}
+};
+}
+@Override
+public void setVisibility(int visibility) {
+// On GB/Froyo, setting the visibility to GONE/HIDDEN alone does not
+// work with translations. Calling clearAnimation acts as a workaround.
+if (PRE_HONEYCOMB && visibility != VISIBLE) {
+clearAnimation();
+}
+super.setVisibility(visibility);
+}
+@Override
+public void setAnimation(Animation animation) {
+// On GB/Froyo, setting the animation after hiding the view causes it
+// to reappear. As a workaround, disallow setAnimation from being
+// called if the view is not shown.
+if (PRE_HONEYCOMB && isShown()) {
+super.setAnimation(animation);
+}
+}
+@Override
+public void onLayout(boolean f, int l, int t, int r, int b) {
+mBounds.left = 0;
+mBounds.right = (r - l) * mCurrentProgress / MAX_PROGRESS;
+mBounds.top = 0;
+mBounds.bottom = b - t;
+}
+@Override
+public void onDraw(Canvas canvas) {
+final Drawable d = getDrawable();
+d.setBounds(mBounds);
+d.draw(canvas);
+}
+/**
+* Immediately sets the progress bar to the given progress percentage.
+*
+* @param progress Percentage (0-100) to which progress bar should be set
+*/
+void setProgress(int progressPercentage) {
+mCurrentProgress = mTargetProgress = getAbsoluteProgress(progressPercentage);
+updateBounds();
+clearMessages();
+}
+/**
+* Animates the progress bar from the current progress value to the given
+* progress percentage.
+*
+* @param progress Percentage (0-100) to which progress bar should be animated
+*/
+void animateProgress(int progressPercentage) {
+final int absoluteProgress = getAbsoluteProgress(progressPercentage);
+if (absoluteProgress <= mTargetProgress) {
+// After we manually click stop, we can still receive page load
+// events (e.g., DOMContentLoaded). Updating for other updates
+// after a STOP event can freeze the progress bar, so guard against
+// that here.
+return;
+}
+mTargetProgress = absoluteProgress;
+mIncrement = (mTargetProgress - mCurrentProgress) / STEPS;
+clearMessages();
+mHandler.sendEmptyMessage(MSG_UPDATE);
+}
+private void clearMessages() {
+mHandler.removeMessages(MSG_UPDATE);
+mHandler.removeMessages(MSG_HIDE);
+}
+private int getAbsoluteProgress(int progressPercentage) {
+if (progressPercentage < 0) {
+return 0;
+}
+if (progressPercentage > 100) {
+return 100;
+}
+return progressPercentage * MAX_PROGRESS / 100;
+}
+private void updateBounds() {
+mBounds.right = getWidth() * mCurrentProgress / MAX_PROGRESS;
+invalidate();
+}
+}

The Tor Browser / file comparison

comparison: mobile/android/base/toolbar/ToolbarProgressView.java

mobile/android/base/toolbar/ToolbarProgressView.java