+ * 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. + *
+ * + *+ * 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. + *
+ * + *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: + *
+ * + *
+ * 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();
+ * }
+ * }
+ *
+ * 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:
+ * + *+ * <ProgressBar + * style="@android:style/Widget.ProgressBar.Horizontal" + * ... />+ * + *
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.
+ * + *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:
+ * + *+ * <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>+ * + *
Other progress bar styles provided by the system include:
+ *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).
+ * + *XML attributes + *
+ * See {@link android.R.styleable#ProgressBar ProgressBar Attributes}, + * {@link android.R.styleable#View View Attributes} + *
+ * + * @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; + } + + /** + *+ * Initialize the progress bar's default values: + *
+ *Indicate whether this progress bar is in indeterminate mode.
+ * + * @return true if the progress bar is in indeterminate mode + */ + @ViewDebug.ExportedProperty(category = "progress") + public synchronized boolean isIndeterminate() { + return mIndeterminate; + } + + /** + *Change the indeterminate mode for this progress bar. In indeterminate + * mode, the progress is ignored and the progress bar shows an infinite + * animation instead.
+ * + * 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(); + } + } + } + + /** + *Get the drawable used to draw the progress bar in + * indeterminate mode.
+ * + * @return a {@link android.graphics.drawable.Drawable} instance + * + * @see #setIndeterminateDrawable(android.graphics.drawable.Drawable) + * @see #setIndeterminate(boolean) + */ + public Drawable getIndeterminateDrawable() { + return mIndeterminateDrawable; + } + + /** + *Define the drawable used to draw the progress bar in + * indeterminate mode.
+ * + * @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(); + } + } + + /** + *Get the drawable used to draw the progress bar in + * progress mode.
+ * + * @return a {@link android.graphics.drawable.Drawable} instance + * + * @see #setProgressDrawable(android.graphics.drawable.Drawable) + * @see #setIndeterminate(boolean) + */ + public Drawable getProgressDrawable() { + return mProgressDrawable; + } + + /** + *Define the drawable used to draw the progress bar in + * progress mode.
+ * + * @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); + } + } + + /** + *Set the current progress to the specified value. Does not do anything + * if the progress bar is in indeterminate mode.
+ * + * @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); + } + } + + /** + *+ * Set the current secondary progress to the specified value. Does not do + * anything if the progress bar is in indeterminate mode. + *
+ * + * @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); + } + } + + /** + *Get the progress bar's current level of progress. Return 0 when the + * progress bar is in indeterminate mode.
+ * + * @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; + } + + /** + *Get the progress bar's current level of secondary progress. Return 0 when the + * progress bar is in indeterminate mode.
+ * + * @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; + } + + /** + *Return the upper limit of this progress bar's range.
+ * + * @return a positive integer + * + * @see #setMax(int) + * @see #getProgress() + * @see #getSecondaryProgress() + */ + @ViewDebug.ExportedProperty(category = "progress") + public synchronized int getMax() { + return mMax; + } + + /** + *Set the range of the progress bar to 0...max.
+ * + * @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); + } + } + + /** + *Increase the progress bar's progress by the specified amount.
+ * + * @param diff the amount by which the progress must be increased + * + * @see #setProgress(int) + */ + public synchronized final void incrementProgressBy(int diff) { + setProgress(mProgress + diff); + } + + /** + *Increase the progress bar's secondary progress by the specified amount.
+ * + * @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); + } + + /** + *Start the indeterminate progress animation.
+ */ + 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(); + } + + /** + *Stop the indeterminate progress animation.
+ */ + 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