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Apache License
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/* * Copyright (C) 2006 The Android Open Source Project */*from www . ja va 2 s .co m*/ * 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 com.actionbarsherlock.internal.widget; import android.content.Context; import android.content.res.TypedArray; import android.graphics.Bitmap; import android.graphics.BitmapShader; import android.graphics.Canvas; import android.graphics.Rect; import android.graphics.Shader; import android.graphics.drawable.Animatable; import android.graphics.drawable.AnimationDrawable; import android.graphics.drawable.BitmapDrawable; import android.graphics.drawable.ClipDrawable; import android.graphics.drawable.Drawable; import android.graphics.drawable.LayerDrawable; import android.graphics.drawable.ShapeDrawable; import android.graphics.drawable.shapes.RoundRectShape; import android.graphics.drawable.shapes.Shape; import android.os.Build; import android.os.Parcel; import android.os.Parcelable; import android.os.SystemClock; import android.util.AttributeSet; import android.view.Gravity; import android.view.View; import android.view.ViewDebug; import android.view.accessibility.AccessibilityEvent; import android.view.accessibility.AccessibilityManager; import android.view.animation.AlphaAnimation; import android.view.animation.Animation; import android.view.animation.AnimationUtils; import android.view.animation.Interpolator; import android.view.animation.LinearInterpolator; import android.view.animation.Transformation; import android.widget.RemoteViews.RemoteView; /** * <p> * Visual indicator of progress in some operation. Displays a bar to the user * representing how far the operation has progressed; the application can * change the amount of progress (modifying the length of the bar) as it moves * forward. There is also a secondary progress displayable on a progress bar * which is useful for displaying intermediate progress, such as the buffer * level during a streaming playback progress bar. * </p> * * <p> * A progress bar can also be made indeterminate. In indeterminate mode, the * progress bar shows a cyclic animation without an indication of progress. This mode is used by * applications when the length of the task is unknown. The indeterminate progress bar can be either * a spinning wheel or a horizontal bar. * </p> * * <p>The following code example shows how a progress bar can be used from * a worker thread to update the user interface to notify the user of progress: * </p> * * <pre> * public class MyActivity extends Activity { * private static final int PROGRESS = 0x1; * * private ProgressBar mProgress; * private int mProgressStatus = 0; * * private Handler mHandler = new Handler(); * * protected void onCreate(Bundle icicle) { * super.onCreate(icicle); * * setContentView(R.layout.progressbar_activity); * * mProgress = (ProgressBar) findViewById(R.id.progress_bar); * * // Start lengthy operation in a background thread * new Thread(new Runnable() { * public void run() { * while (mProgressStatus < 100) { * mProgressStatus = doWork(); * * // Update the progress bar * mHandler.post(new Runnable() { * public void run() { * mProgress.setProgress(mProgressStatus); * } * }); * } * } * }).start(); * } * }</pre> * * <p>To add a progress bar to a layout file, you can use the {@code <ProgressBar>} element. * By default, the progress bar is a spinning wheel (an indeterminate indicator). To change to a * horizontal progress bar, apply the {@link android.R.style#Widget_ProgressBar_Horizontal * Widget.ProgressBar.Horizontal} style, like so:</p> * * <pre> * <ProgressBar * style="@android:style/Widget.ProgressBar.Horizontal" * ... /></pre> * * <p>If you will use the progress bar to show real progress, you must use the horizontal bar. You * can then increment the progress with {@link #incrementProgressBy incrementProgressBy()} or * {@link #setProgress setProgress()}. By default, the progress bar is full when it reaches 100. If * necessary, you can adjust the maximum value (the value for a full bar) using the {@link * android.R.styleable#ProgressBar_max android:max} attribute. Other attributes available are listed * below.</p> * * <p>Another common style to apply to the progress bar is {@link * android.R.style#Widget_ProgressBar_Small Widget.ProgressBar.Small}, which shows a smaller * version of the spinning wheel—useful when waiting for content to load. * For example, you can insert this kind of progress bar into your default layout for * a view that will be populated by some content fetched from the Internet—the spinning wheel * appears immediately and when your application receives the content, it replaces the progress bar * with the loaded content. For example:</p> * * <pre> * <LinearLayout * android:orientation="horizontal" * ... > * <ProgressBar * android:layout_width="wrap_content" * android:layout_height="wrap_content" * style="@android:style/Widget.ProgressBar.Small" * android:layout_marginRight="5dp" /> * <TextView * android:layout_width="wrap_content" * android:layout_height="wrap_content" * android:text="@string/loading" /> * </LinearLayout></pre> * * <p>Other progress bar styles provided by the system include:</p> * <ul> * <li>{@link android.R.style#Widget_ProgressBar_Horizontal Widget.ProgressBar.Horizontal}</li> * <li>{@link android.R.style#Widget_ProgressBar_Small Widget.ProgressBar.Small}</li> * <li>{@link android.R.style#Widget_ProgressBar_Large Widget.ProgressBar.Large}</li> * <li>{@link android.R.style#Widget_ProgressBar_Inverse Widget.ProgressBar.Inverse}</li> * <li>{@link android.R.style#Widget_ProgressBar_Small_Inverse * Widget.ProgressBar.Small.Inverse}</li> * <li>{@link android.R.style#Widget_ProgressBar_Large_Inverse * Widget.ProgressBar.Large.Inverse}</li> * </ul> * <p>The "inverse" styles provide an inverse color scheme for the spinner, which may be necessary * if your application uses a light colored theme (a white background).</p> * * <p><strong>XML attributes</b></strong> * <p> * See {@link android.R.styleable#ProgressBar ProgressBar Attributes}, * {@link android.R.styleable#View View Attributes} * </p> * * @attr ref android.R.styleable#ProgressBar_animationResolution * @attr ref android.R.styleable#ProgressBar_indeterminate * @attr ref android.R.styleable#ProgressBar_indeterminateBehavior * @attr ref android.R.styleable#ProgressBar_indeterminateDrawable * @attr ref android.R.styleable#ProgressBar_indeterminateDuration * @attr ref android.R.styleable#ProgressBar_indeterminateOnly * @attr ref android.R.styleable#ProgressBar_interpolator * @attr ref android.R.styleable#ProgressBar_max * @attr ref android.R.styleable#ProgressBar_maxHeight * @attr ref android.R.styleable#ProgressBar_maxWidth * @attr ref android.R.styleable#ProgressBar_minHeight * @attr ref android.R.styleable#ProgressBar_minWidth * @attr ref android.R.styleable#ProgressBar_progress * @attr ref android.R.styleable#ProgressBar_progressDrawable * @attr ref android.R.styleable#ProgressBar_secondaryProgress */ @RemoteView public class IcsProgressBar extends View { private static final boolean IS_HONEYCOMB = Build.VERSION.SDK_INT >= Build.VERSION_CODES.HONEYCOMB; private static final int MAX_LEVEL = 10000; private static final int ANIMATION_RESOLUTION = 200; private static final int TIMEOUT_SEND_ACCESSIBILITY_EVENT = 200; private static final int[] ProgressBar = new int[] { android.R.attr.maxWidth, android.R.attr.maxHeight, android.R.attr.max, android.R.attr.progress, android.R.attr.secondaryProgress, android.R.attr.indeterminate, android.R.attr.indeterminateOnly, android.R.attr.indeterminateDrawable, android.R.attr.progressDrawable, android.R.attr.indeterminateDuration, android.R.attr.indeterminateBehavior, android.R.attr.minWidth, android.R.attr.minHeight, android.R.attr.interpolator, android.R.attr.animationResolution, }; private static final int ProgressBar_maxWidth = 0; private static final int ProgressBar_maxHeight = 1; private static final int ProgressBar_max = 2; private static final int ProgressBar_progress = 3; private static final int ProgressBar_secondaryProgress = 4; private static final int ProgressBar_indeterminate = 5; private static final int ProgressBar_indeterminateOnly = 6; private static final int ProgressBar_indeterminateDrawable = 7; private static final int ProgressBar_progressDrawable = 8; private static final int ProgressBar_indeterminateDuration = 9; private static final int ProgressBar_indeterminateBehavior = 10; private static final int ProgressBar_minWidth = 11; private static final int ProgressBar_minHeight = 12; private static final int ProgressBar_interpolator = 13; private static final int ProgressBar_animationResolution = 14; int mMinWidth; int mMaxWidth; int mMinHeight; int mMaxHeight; private int mProgress; private int mSecondaryProgress; private int mMax; private int mBehavior; private int mDuration; private boolean mIndeterminate; private boolean mOnlyIndeterminate; private Transformation mTransformation; private AlphaAnimation mAnimation; private Drawable mIndeterminateDrawable; private int mIndeterminateRealLeft; private int mIndeterminateRealTop; private Drawable mProgressDrawable; private Drawable mCurrentDrawable; Bitmap mSampleTile; private boolean mNoInvalidate; private Interpolator mInterpolator; private RefreshProgressRunnable mRefreshProgressRunnable; private long mUiThreadId; private boolean mShouldStartAnimationDrawable; private long mLastDrawTime; private boolean mInDrawing; private int mAnimationResolution; private AccessibilityManager mAccessibilityManager; private AccessibilityEventSender mAccessibilityEventSender; /** * Create a new progress bar with range 0...100 and initial progress of 0. * @param context the application environment */ public IcsProgressBar(Context context) { this(context, null); } public IcsProgressBar(Context context, AttributeSet attrs) { this(context, attrs, android.R.attr.progressBarStyle); } public IcsProgressBar(Context context, AttributeSet attrs, int defStyle) { this(context, attrs, defStyle, 0); } /** * @hide */ public IcsProgressBar(Context context, AttributeSet attrs, int defStyle, int styleRes) { super(context, attrs, defStyle); mUiThreadId = Thread.currentThread().getId(); initProgressBar(); TypedArray a = context.obtainStyledAttributes(attrs, /*R.styleable.*/ProgressBar, defStyle, styleRes); mNoInvalidate = true; Drawable drawable = a.getDrawable(/*R.styleable.*/ProgressBar_progressDrawable); if (drawable != null) { drawable = tileify(drawable, false); // Calling this method can set mMaxHeight, make sure the corresponding // XML attribute for mMaxHeight is read after calling this method setProgressDrawable(drawable); } mDuration = a.getInt(/*R.styleable.*/ProgressBar_indeterminateDuration, mDuration); mMinWidth = a.getDimensionPixelSize(/*R.styleable.*/ProgressBar_minWidth, mMinWidth); mMaxWidth = a.getDimensionPixelSize(/*R.styleable.*/ProgressBar_maxWidth, mMaxWidth); mMinHeight = a.getDimensionPixelSize(/*R.styleable.*/ProgressBar_minHeight, mMinHeight); mMaxHeight = a.getDimensionPixelSize(/*R.styleable.*/ProgressBar_maxHeight, mMaxHeight); mBehavior = a.getInt(/*R.styleable.*/ProgressBar_indeterminateBehavior, mBehavior); final int resID = a.getResourceId( /*com.android.internal.R.styleable.*/ProgressBar_interpolator, android.R.anim.linear_interpolator); // default to linear interpolator if (resID > 0) { setInterpolator(context, resID); } setMax(a.getInt(/*R.styleable.*/ProgressBar_max, mMax)); setProgress(a.getInt(/*R.styleable.*/ProgressBar_progress, mProgress)); setSecondaryProgress( a.getInt(/*R.styleable.*/ProgressBar_secondaryProgress, mSecondaryProgress)); drawable = a.getDrawable(/*R.styleable.*/ProgressBar_indeterminateDrawable); if (drawable != null) { drawable = tileifyIndeterminate(drawable); setIndeterminateDrawable(drawable); } mOnlyIndeterminate = a.getBoolean( /*R.styleable.*/ProgressBar_indeterminateOnly, mOnlyIndeterminate); mNoInvalidate = false; setIndeterminate(mOnlyIndeterminate || a.getBoolean( /*R.styleable.*/ProgressBar_indeterminate, mIndeterminate)); mAnimationResolution = a.getInteger(/*R.styleable.*/ProgressBar_animationResolution, ANIMATION_RESOLUTION); a.recycle(); mAccessibilityManager = (AccessibilityManager)context.getSystemService(Context.ACCESSIBILITY_SERVICE); } /** * Converts a drawable to a tiled version of itself. It will recursively * traverse layer and state list drawables. */ private Drawable tileify(Drawable drawable, boolean clip) { if (drawable instanceof LayerDrawable) { LayerDrawable background = (LayerDrawable) drawable; final int N = background.getNumberOfLayers(); Drawable[] outDrawables = new Drawable[N]; for (int i = 0; i < N; i++) { int id = background.getId(i); outDrawables[i] = tileify(background.getDrawable(i), (id == android.R.id.progress || id == android.R.id.secondaryProgress)); } LayerDrawable newBg = new LayerDrawable(outDrawables); for (int i = 0; i < N; i++) { newBg.setId(i, background.getId(i)); } return newBg; }/* else if (drawable instanceof StateListDrawable) { StateListDrawable in = (StateListDrawable) drawable; StateListDrawable out = new StateListDrawable(); int numStates = in.getStateCount(); for (int i = 0; i < numStates; i++) { out.addState(in.getStateSet(i), tileify(in.getStateDrawable(i), clip)); } return out; }*/ else if (drawable instanceof BitmapDrawable) { final Bitmap tileBitmap = ((BitmapDrawable) drawable).getBitmap(); if (mSampleTile == null) { mSampleTile = tileBitmap; } final ShapeDrawable shapeDrawable = new ShapeDrawable(getDrawableShape()); final BitmapShader bitmapShader = new BitmapShader(tileBitmap, Shader.TileMode.REPEAT, Shader.TileMode.CLAMP); shapeDrawable.getPaint().setShader(bitmapShader); return (clip) ? new ClipDrawable(shapeDrawable, Gravity.LEFT, ClipDrawable.HORIZONTAL) : shapeDrawable; } return drawable; } Shape getDrawableShape() { final float[] roundedCorners = new float[] { 5, 5, 5, 5, 5, 5, 5, 5 }; return new RoundRectShape(roundedCorners, null, null); } /** * Convert a AnimationDrawable for use as a barberpole animation. * Each frame of the animation is wrapped in a ClipDrawable and * given a tiling BitmapShader. */ private Drawable tileifyIndeterminate(Drawable drawable) { if (drawable instanceof AnimationDrawable) { AnimationDrawable background = (AnimationDrawable) drawable; final int N = background.getNumberOfFrames(); AnimationDrawable newBg = new AnimationDrawable(); newBg.setOneShot(background.isOneShot()); for (int i = 0; i < N; i++) { Drawable frame = tileify(background.getFrame(i), true); frame.setLevel(10000); newBg.addFrame(frame, background.getDuration(i)); } newBg.setLevel(10000); drawable = newBg; } return drawable; } /** * <p> * Initialize the progress bar's default values: * </p> * <ul> * <li>progress = 0</li> * <li>max = 100</li> * <li>animation duration = 4000 ms</li> * <li>indeterminate = false</li> * <li>behavior = repeat</li> * </ul> */ private void initProgressBar() { mMax = 100; mProgress = 0; mSecondaryProgress = 0; mIndeterminate = false; mOnlyIndeterminate = false; mDuration = 4000; mBehavior = AlphaAnimation.RESTART; mMinWidth = 24; mMaxWidth = 48; mMinHeight = 24; mMaxHeight = 48; } /** * <p>Indicate whether this progress bar is in indeterminate mode.</p> * * @return true if the progress bar is in indeterminate mode */ @ViewDebug.ExportedProperty(category = "progress") public synchronized boolean isIndeterminate() { return mIndeterminate; } /** * <p>Change the indeterminate mode for this progress bar. In indeterminate * mode, the progress is ignored and the progress bar shows an infinite * animation instead.</p> * * If this progress bar's style only supports indeterminate mode (such as the circular * progress bars), then this will be ignored. * * @param indeterminate true to enable the indeterminate mode */ public synchronized void setIndeterminate(boolean indeterminate) { if ((!mOnlyIndeterminate || !mIndeterminate) && indeterminate != mIndeterminate) { mIndeterminate = indeterminate; if (indeterminate) { // swap between indeterminate and regular backgrounds mCurrentDrawable = mIndeterminateDrawable; startAnimation(); } else { mCurrentDrawable = mProgressDrawable; stopAnimation(); } } } /** * <p>Get the drawable used to draw the progress bar in * indeterminate mode.</p> * * @return a {@link android.graphics.drawable.Drawable} instance * * @see #setIndeterminateDrawable(android.graphics.drawable.Drawable) * @see #setIndeterminate(boolean) */ public Drawable getIndeterminateDrawable() { return mIndeterminateDrawable; } /** * <p>Define the drawable used to draw the progress bar in * indeterminate mode.</p> * * @param d the new drawable * * @see #getIndeterminateDrawable() * @see #setIndeterminate(boolean) */ public void setIndeterminateDrawable(Drawable d) { if (d != null) { d.setCallback(this); } mIndeterminateDrawable = d; if (mIndeterminate) { mCurrentDrawable = d; postInvalidate(); } } /** * <p>Get the drawable used to draw the progress bar in * progress mode.</p> * * @return a {@link android.graphics.drawable.Drawable} instance * * @see #setProgressDrawable(android.graphics.drawable.Drawable) * @see #setIndeterminate(boolean) */ public Drawable getProgressDrawable() { return mProgressDrawable; } /** * <p>Define the drawable used to draw the progress bar in * progress mode.</p> * * @param d the new drawable * * @see #getProgressDrawable() * @see #setIndeterminate(boolean) */ public void setProgressDrawable(Drawable d) { boolean needUpdate; if (mProgressDrawable != null && d != mProgressDrawable) { mProgressDrawable.setCallback(null); needUpdate = true; } else { needUpdate = false; } if (d != null) { d.setCallback(this); // Make sure the ProgressBar is always tall enough int drawableHeight = d.getMinimumHeight(); if (mMaxHeight < drawableHeight) { mMaxHeight = drawableHeight; requestLayout(); } } mProgressDrawable = d; if (!mIndeterminate) { mCurrentDrawable = d; postInvalidate(); } if (needUpdate) { updateDrawableBounds(getWidth(), getHeight()); updateDrawableState(); doRefreshProgress(android.R.id.progress, mProgress, false, false); doRefreshProgress(android.R.id.secondaryProgress, mSecondaryProgress, false, false); } } /** * @return The drawable currently used to draw the progress bar */ Drawable getCurrentDrawable() { return mCurrentDrawable; } @Override protected boolean verifyDrawable(Drawable who) { return who == mProgressDrawable || who == mIndeterminateDrawable || super.verifyDrawable(who); } @Override public void jumpDrawablesToCurrentState() { super.jumpDrawablesToCurrentState(); if (mProgressDrawable != null) mProgressDrawable.jumpToCurrentState(); if (mIndeterminateDrawable != null) mIndeterminateDrawable.jumpToCurrentState(); } @Override public void postInvalidate() { if (!mNoInvalidate) { super.postInvalidate(); } } private class RefreshProgressRunnable implements Runnable { private int mId; private int mProgress; private boolean mFromUser; RefreshProgressRunnable(int id, int progress, boolean fromUser) { mId = id; mProgress = progress; mFromUser = fromUser; } public void run() { doRefreshProgress(mId, mProgress, mFromUser, true); // Put ourselves back in the cache when we are done mRefreshProgressRunnable = this; } public void setup(int id, int progress, boolean fromUser) { mId = id; mProgress = progress; mFromUser = fromUser; } } private synchronized void doRefreshProgress(int id, int progress, boolean fromUser, boolean callBackToApp) { float scale = mMax > 0 ? (float) progress / (float) mMax : 0; final Drawable d = mCurrentDrawable; if (d != null) { Drawable progressDrawable = null; if (d instanceof LayerDrawable) { progressDrawable = ((LayerDrawable) d).findDrawableByLayerId(id); } final int level = (int) (scale * MAX_LEVEL); (progressDrawable != null ? progressDrawable : d).setLevel(level); } else { invalidate(); } if (callBackToApp && id == android.R.id.progress) { onProgressRefresh(scale, fromUser); } } void onProgressRefresh(float scale, boolean fromUser) { if (mAccessibilityManager.isEnabled()) { scheduleAccessibilityEventSender(); } } private synchronized void refreshProgress(int id, int progress, boolean fromUser) { if (mUiThreadId == Thread.currentThread().getId()) { doRefreshProgress(id, progress, fromUser, true); } else { RefreshProgressRunnable r; if (mRefreshProgressRunnable != null) { // Use cached RefreshProgressRunnable if available r = mRefreshProgressRunnable; // Uncache it mRefreshProgressRunnable = null; r.setup(id, progress, fromUser); } else { // Make a new one r = new RefreshProgressRunnable(id, progress, fromUser); } post(r); } } /** * <p>Set the current progress to the specified value. Does not do anything * if the progress bar is in indeterminate mode.</p> * * @param progress the new progress, between 0 and {@link #getMax()} * * @see #setIndeterminate(boolean) * @see #isIndeterminate() * @see #getProgress() * @see #incrementProgressBy(int) */ public synchronized void setProgress(int progress) { setProgress(progress, false); } synchronized void setProgress(int progress, boolean fromUser) { if (mIndeterminate) { return; } if (progress < 0) { progress = 0; } if (progress > mMax) { progress = mMax; } if (progress != mProgress) { mProgress = progress; refreshProgress(android.R.id.progress, mProgress, fromUser); } } /** * <p> * Set the current secondary progress to the specified value. Does not do * anything if the progress bar is in indeterminate mode. * </p> * * @param secondaryProgress the new secondary progress, between 0 and {@link #getMax()} * @see #setIndeterminate(boolean) * @see #isIndeterminate() * @see #getSecondaryProgress() * @see #incrementSecondaryProgressBy(int) */ public synchronized void setSecondaryProgress(int secondaryProgress) { if (mIndeterminate) { return; } if (secondaryProgress < 0) { secondaryProgress = 0; } if (secondaryProgress > mMax) { secondaryProgress = mMax; } if (secondaryProgress != mSecondaryProgress) { mSecondaryProgress = secondaryProgress; refreshProgress(android.R.id.secondaryProgress, mSecondaryProgress, false); } } /** * <p>Get the progress bar's current level of progress. Return 0 when the * progress bar is in indeterminate mode.</p> * * @return the current progress, between 0 and {@link #getMax()} * * @see #setIndeterminate(boolean) * @see #isIndeterminate() * @see #setProgress(int) * @see #setMax(int) * @see #getMax() */ @ViewDebug.ExportedProperty(category = "progress") public synchronized int getProgress() { return mIndeterminate ? 0 : mProgress; } /** * <p>Get the progress bar's current level of secondary progress. Return 0 when the * progress bar is in indeterminate mode.</p> * * @return the current secondary progress, between 0 and {@link #getMax()} * * @see #setIndeterminate(boolean) * @see #isIndeterminate() * @see #setSecondaryProgress(int) * @see #setMax(int) * @see #getMax() */ @ViewDebug.ExportedProperty(category = "progress") public synchronized int getSecondaryProgress() { return mIndeterminate ? 0 : mSecondaryProgress; } /** * <p>Return the upper limit of this progress bar's range.</p> * * @return a positive integer * * @see #setMax(int) * @see #getProgress() * @see #getSecondaryProgress() */ @ViewDebug.ExportedProperty(category = "progress") public synchronized int getMax() { return mMax; } /** * <p>Set the range of the progress bar to 0...<tt>max</tt>.</p> * * @param max the upper range of this progress bar * * @see #getMax() * @see #setProgress(int) * @see #setSecondaryProgress(int) */ public synchronized void setMax(int max) { if (max < 0) { max = 0; } if (max != mMax) { mMax = max; postInvalidate(); if (mProgress > max) { mProgress = max; } refreshProgress(android.R.id.progress, mProgress, false); } } /** * <p>Increase the progress bar's progress by the specified amount.</p> * * @param diff the amount by which the progress must be increased * * @see #setProgress(int) */ public synchronized final void incrementProgressBy(int diff) { setProgress(mProgress + diff); } /** * <p>Increase the progress bar's secondary progress by the specified amount.</p> * * @param diff the amount by which the secondary progress must be increased * * @see #setSecondaryProgress(int) */ public synchronized final void incrementSecondaryProgressBy(int diff) { setSecondaryProgress(mSecondaryProgress + diff); } /** * <p>Start the indeterminate progress animation.</p> */ void startAnimation() { if (getVisibility() != VISIBLE) { return; } if (mIndeterminateDrawable instanceof Animatable) { mShouldStartAnimationDrawable = true; mAnimation = null; } else { if (mInterpolator == null) { mInterpolator = new LinearInterpolator(); } mTransformation = new Transformation(); mAnimation = new AlphaAnimation(0.0f, 1.0f); mAnimation.setRepeatMode(mBehavior); mAnimation.setRepeatCount(Animation.INFINITE); mAnimation.setDuration(mDuration); mAnimation.setInterpolator(mInterpolator); mAnimation.setStartTime(Animation.START_ON_FIRST_FRAME); } postInvalidate(); } /** * <p>Stop the indeterminate progress animation.</p> */ void stopAnimation() { mAnimation = null; mTransformation = null; if (mIndeterminateDrawable instanceof Animatable) { ((Animatable) mIndeterminateDrawable).stop(); mShouldStartAnimationDrawable = false; } postInvalidate(); } /** * Sets the acceleration curve for the indeterminate animation. * The interpolator is loaded as a resource from the specified context. * * @param context The application environment * @param resID The resource identifier of the interpolator to load */ public void setInterpolator(Context context, int resID) { setInterpolator(AnimationUtils.loadInterpolator(context, resID)); } /** * Sets the acceleration curve for the indeterminate animation. * Defaults to a linear interpolation. * * @param interpolator The interpolator which defines the acceleration curve */ public void setInterpolator(Interpolator interpolator) { mInterpolator = interpolator; } /** * Gets the acceleration curve type for the indeterminate animation. * * @return the {@link Interpolator} associated to this animation */ public Interpolator getInterpolator() { return mInterpolator; } @Override public void setVisibility(int v) { if (getVisibility() != v) { super.setVisibility(v); if (mIndeterminate) { // let's be nice with the UI thread if (v == GONE || v == INVISIBLE) { stopAnimation(); } else { startAnimation(); } } } } @Override protected void onVisibilityChanged(View changedView, int visibility) { super.onVisibilityChanged(changedView, visibility); if (mIndeterminate) { // let's be nice with the UI thread if (visibility == GONE || visibility == INVISIBLE) { stopAnimation(); } else { startAnimation(); } } } @Override public void invalidateDrawable(Drawable dr) { if (!mInDrawing) { if (verifyDrawable(dr)) { final Rect dirty = dr.getBounds(); final int scrollX = getScrollX() + getPaddingLeft(); final int scrollY = getScrollY() + getPaddingTop(); invalidate(dirty.left + scrollX, dirty.top + scrollY, dirty.right + scrollX, dirty.bottom + scrollY); } else { super.invalidateDrawable(dr); } } } /** * @hide * @Override public int getResolvedLayoutDirection(Drawable who) { return (who == mProgressDrawable || who == mIndeterminateDrawable) ? getResolvedLayoutDirection() : super.getResolvedLayoutDirection(who); } */ @Override protected void onSizeChanged(int w, int h, int oldw, int oldh) { updateDrawableBounds(w, h); } private void updateDrawableBounds(int w, int h) { // onDraw will translate the canvas so we draw starting at 0,0 int right = w - getPaddingRight() - getPaddingLeft(); int bottom = h - getPaddingBottom() - getPaddingTop(); int top = 0; int left = 0; if (mIndeterminateDrawable != null) { // Aspect ratio logic does not apply to AnimationDrawables if (mOnlyIndeterminate && !(mIndeterminateDrawable instanceof AnimationDrawable)) { // Maintain aspect ratio. Certain kinds of animated drawables // get very confused otherwise. final int intrinsicWidth = mIndeterminateDrawable.getIntrinsicWidth(); final int intrinsicHeight = mIndeterminateDrawable.getIntrinsicHeight(); final float intrinsicAspect = (float) intrinsicWidth / intrinsicHeight; final float boundAspect = (float) w / h; if (intrinsicAspect != boundAspect) { if (boundAspect > intrinsicAspect) { // New width is larger. Make it smaller to match height. final int width = (int) (h * intrinsicAspect); left = (w - width) / 2; right = left + width; } else { // New height is larger. Make it smaller to match width. final int height = (int) (w * (1 / intrinsicAspect)); top = (h - height) / 2; bottom = top + height; } } } mIndeterminateDrawable.setBounds(0, 0, right - left, bottom - top); mIndeterminateRealLeft = left; mIndeterminateRealTop = top; } if (mProgressDrawable != null) { mProgressDrawable.setBounds(0, 0, right, bottom); } } @Override protected synchronized void onDraw(Canvas canvas) { super.onDraw(canvas); Drawable d = mCurrentDrawable; if (d != null) { // Translate canvas so a indeterminate circular progress bar with padding // rotates properly in its animation canvas.save(); canvas.translate(getPaddingLeft() + mIndeterminateRealLeft, getPaddingTop() + mIndeterminateRealTop); long time = getDrawingTime(); if (mAnimation != null) { mAnimation.getTransformation(time, mTransformation); float scale = mTransformation.getAlpha(); try { mInDrawing = true; d.setLevel((int) (scale * MAX_LEVEL)); } finally { mInDrawing = false; } if (SystemClock.uptimeMillis() - mLastDrawTime >= mAnimationResolution) { mLastDrawTime = SystemClock.uptimeMillis(); postInvalidateDelayed(mAnimationResolution); } } d.draw(canvas); canvas.restore(); if (mShouldStartAnimationDrawable && d instanceof Animatable) { ((Animatable) d).start(); mShouldStartAnimationDrawable = false; } } } @Override protected synchronized void onMeasure(int widthMeasureSpec, int heightMeasureSpec) { Drawable d = mCurrentDrawable; int dw = 0; int dh = 0; if (d != null) { dw = Math.max(mMinWidth, Math.min(mMaxWidth, d.getIntrinsicWidth())); dh = Math.max(mMinHeight, Math.min(mMaxHeight, d.getIntrinsicHeight())); } updateDrawableState(); dw += getPaddingLeft() + getPaddingRight(); dh += getPaddingTop() + getPaddingBottom(); if (IS_HONEYCOMB) { setMeasuredDimension(View.resolveSizeAndState(dw, widthMeasureSpec, 0), View.resolveSizeAndState(dh, heightMeasureSpec, 0)); } else { setMeasuredDimension(View.resolveSize(dw, widthMeasureSpec), View.resolveSize(dh, heightMeasureSpec)); } } @Override protected void drawableStateChanged() { super.drawableStateChanged(); updateDrawableState(); } private void updateDrawableState() { int[] state = getDrawableState(); if (mProgressDrawable != null && mProgressDrawable.isStateful()) { mProgressDrawable.setState(state); } if (mIndeterminateDrawable != null && mIndeterminateDrawable.isStateful()) { mIndeterminateDrawable.setState(state); } } static class SavedState extends BaseSavedState { int progress; int secondaryProgress; /** * Constructor called from {@link IcsProgressBar#onSaveInstanceState()} */ SavedState(Parcelable superState) { super(superState); } /** * Constructor called from {@link #CREATOR} */ private SavedState(Parcel in) { super(in); progress = in.readInt(); secondaryProgress = in.readInt(); } @Override public void writeToParcel(Parcel out, int flags) { super.writeToParcel(out, flags); out.writeInt(progress); out.writeInt(secondaryProgress); } public static final Parcelable.Creator<SavedState> CREATOR = new Parcelable.Creator<SavedState>() { public SavedState createFromParcel(Parcel in) { return new SavedState(in); } public SavedState[] newArray(int size) { return new SavedState[size]; } }; } @Override public Parcelable onSaveInstanceState() { // Force our ancestor class to save its state Parcelable superState = super.onSaveInstanceState(); SavedState ss = new SavedState(superState); ss.progress = mProgress; ss.secondaryProgress = mSecondaryProgress; return ss; } @Override public void onRestoreInstanceState(Parcelable state) { SavedState ss = (SavedState) state; super.onRestoreInstanceState(ss.getSuperState()); setProgress(ss.progress); setSecondaryProgress(ss.secondaryProgress); } @Override protected void onAttachedToWindow() { super.onAttachedToWindow(); if (mIndeterminate) { startAnimation(); } } @Override protected void onDetachedFromWindow() { if (mIndeterminate) { stopAnimation(); } if(mRefreshProgressRunnable != null) { removeCallbacks(mRefreshProgressRunnable); } if (mAccessibilityEventSender != null) { removeCallbacks(mAccessibilityEventSender); } // This should come after stopAnimation(), otherwise an invalidate message remains in the // queue, which can prevent the entire view hierarchy from being GC'ed during a rotation super.onDetachedFromWindow(); } @Override public void onInitializeAccessibilityEvent(AccessibilityEvent event) { super.onInitializeAccessibilityEvent(event); event.setItemCount(mMax); event.setCurrentItemIndex(mProgress); } /** * Schedule a command for sending an accessibility event. * </br> * Note: A command is used to ensure that accessibility events * are sent at most one in a given time frame to save * system resources while the progress changes quickly. */ private void scheduleAccessibilityEventSender() { if (mAccessibilityEventSender == null) { mAccessibilityEventSender = new AccessibilityEventSender(); } else { removeCallbacks(mAccessibilityEventSender); } postDelayed(mAccessibilityEventSender, TIMEOUT_SEND_ACCESSIBILITY_EVENT); } /** * Command for sending an accessibility event. */ private class AccessibilityEventSender implements Runnable { public void run() { sendAccessibilityEvent(AccessibilityEvent.TYPE_VIEW_SELECTED); } } }