19066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project/* 29066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Copyright (C) 2007 The Android Open Source Project 39066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 49066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Licensed under the Apache License, Version 2.0 (the "License"); 59066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * you may not use this file except in compliance with the License. 69066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * You may obtain a copy of the License at 79066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 89066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * http://www.apache.org/licenses/LICENSE-2.0 99066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 109066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Unless required by applicable law or agreed to in writing, software 119066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * distributed under the License is distributed on an "AS IS" BASIS, 129066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 139066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * See the License for the specific language governing permissions and 149066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * limitations under the License. 159066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 169066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 179066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Projectpackage android.widget; 189066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 199066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Projectimport android.content.Context; 209066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Projectimport android.content.res.TypedArray; 219066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Projectimport android.graphics.drawable.shapes.RectShape; 229066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Projectimport android.graphics.drawable.shapes.Shape; 239066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Projectimport android.util.AttributeSet; 249066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 259066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Projectimport com.android.internal.R; 269066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 279066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project/** 289066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * A RatingBar is an extension of SeekBar and ProgressBar that shows a rating in 299066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * stars. The user can touch/drag or use arrow keys to set the rating when using 309066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * the default size RatingBar. The smaller RatingBar style ( 319066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * {@link android.R.attr#ratingBarStyleSmall}) and the larger indicator-only 329066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * style ({@link android.R.attr#ratingBarStyleIndicator}) do not support user 339066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * interaction and should only be used as indicators. 349066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * <p> 359066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * When using a RatingBar that supports user interaction, placing widgets to the 369066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * left or right of the RatingBar is discouraged. 379066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * <p> 389066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * The number of stars set (via {@link #setNumStars(int)} or in an XML layout) 399066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * will be shown when the layout width is set to wrap content (if another layout 409066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * width is set, the results may be unpredictable). 419066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * <p> 429066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * The secondary progress should not be modified by the client as it is used 439066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * internally as the background for a fractionally filled star. 4441ec65355bd6ded652769725b276d47c54a0d913Scott Main * 4541ec65355bd6ded652769725b276d47c54a0d913Scott Main * <p>See the <a href="{@docRoot}resources/tutorials/views/hello-formstuff.html">Form Stuff 4641ec65355bd6ded652769725b276d47c54a0d913Scott Main * tutorial</a>.</p> 479066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 489066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @attr ref android.R.styleable#RatingBar_numStars 499066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @attr ref android.R.styleable#RatingBar_rating 509066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @attr ref android.R.styleable#RatingBar_stepSize 519066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @attr ref android.R.styleable#RatingBar_isIndicator 529066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 539066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Projectpublic class RatingBar extends AbsSeekBar { 549066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 559066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 569066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * A callback that notifies clients when the rating has been changed. This 579066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * includes changes that were initiated by the user through a touch gesture 589066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * or arrow key/trackball as well as changes that were initiated 599066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * programmatically. 609066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 619066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public interface OnRatingBarChangeListener { 629066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 639066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 649066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Notification that the rating has changed. Clients can use the 659066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * fromUser parameter to distinguish user-initiated changes from those 669066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * that occurred programmatically. This will not be called continuously 679066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * while the user is dragging, only when the user finalizes a rating by 689066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * lifting the touch. 699066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 709066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param ratingBar The RatingBar whose rating has changed. 719066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param rating The current rating. This will be in the range 729066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 0..numStars. 739066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param fromUser True if the rating change was initiated by a user's 749066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * touch gesture or arrow key/horizontal trackbell movement. 759066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 769066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project void onRatingChanged(RatingBar ratingBar, float rating, boolean fromUser); 779066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 789066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 799066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 809066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private int mNumStars = 5; 819066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 829066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private int mProgressOnStartTracking; 839066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 849066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private OnRatingBarChangeListener mOnRatingBarChangeListener; 859066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 869066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public RatingBar(Context context, AttributeSet attrs, int defStyle) { 879066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project super(context, attrs, defStyle); 889066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 899066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project TypedArray a = context.obtainStyledAttributes(attrs, R.styleable.RatingBar, 909066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project defStyle, 0); 919066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int numStars = a.getInt(R.styleable.RatingBar_numStars, mNumStars); 929066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project setIsIndicator(a.getBoolean(R.styleable.RatingBar_isIndicator, !mIsUserSeekable)); 939066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final float rating = a.getFloat(R.styleable.RatingBar_rating, -1); 949066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final float stepSize = a.getFloat(R.styleable.RatingBar_stepSize, -1); 959066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project a.recycle(); 969066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 979066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (numStars > 0 && numStars != mNumStars) { 989066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project setNumStars(numStars); 999066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 1009066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1019066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (stepSize >= 0) { 1029066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project setStepSize(stepSize); 1039066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } else { 1049066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project setStepSize(0.5f); 1059066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 1069066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1079066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (rating >= 0) { 1089066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project setRating(rating); 1099066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 1109066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1119066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // A touch inside a star fill up to that fractional area (slightly more 1129066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // than 1 so boundaries round up). 1139066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mTouchProgressOffset = 1.1f; 1149066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 1159066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1169066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public RatingBar(Context context, AttributeSet attrs) { 1179066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project this(context, attrs, com.android.internal.R.attr.ratingBarStyle); 1189066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 1199066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1209066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public RatingBar(Context context) { 1219066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project this(context, null); 1229066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 1239066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1249066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 1259066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Sets the listener to be called when the rating changes. 1269066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 1279066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param listener The listener. 1289066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 1299066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public void setOnRatingBarChangeListener(OnRatingBarChangeListener listener) { 1309066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mOnRatingBarChangeListener = listener; 1319066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 1329066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1339066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 1349066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @return The listener (may be null) that is listening for rating change 1359066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * events. 1369066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 1379066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public OnRatingBarChangeListener getOnRatingBarChangeListener() { 1389066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return mOnRatingBarChangeListener; 1399066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 1409066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1419066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 1429066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Whether this rating bar should only be an indicator (thus non-changeable 1439066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * by the user). 1449066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 1459066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param isIndicator Whether it should be an indicator. 1469066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 1479066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public void setIsIndicator(boolean isIndicator) { 1489066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mIsUserSeekable = !isIndicator; 1499066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project setFocusable(!isIndicator); 1509066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 1519066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1529066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 1539066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @return Whether this rating bar is only an indicator. 1549066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 1559066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public boolean isIndicator() { 1569066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return !mIsUserSeekable; 1579066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 1589066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1599066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 1609066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Sets the number of stars to show. In order for these to be shown 1619066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * properly, it is recommended the layout width of this widget be wrap 1629066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * content. 1639066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 1649066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param numStars The number of stars. 1659066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 1669066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public void setNumStars(final int numStars) { 1679066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (numStars <= 0) { 1689066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return; 1699066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 1709066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1719066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mNumStars = numStars; 1729066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1739066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // This causes the width to change, so re-layout 1749066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project requestLayout(); 1759066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 1769066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1779066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 1789066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Returns the number of stars shown. 1799066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @return The number of stars shown. 1809066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 1819066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public int getNumStars() { 1829066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return mNumStars; 1839066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 1849066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1859066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 1869066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Sets the rating (the number of stars filled). 1879066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 1889066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param rating The rating to set. 1899066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 1909066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public void setRating(float rating) { 1919066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project setProgress(Math.round(rating * getProgressPerStar())); 1929066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 1939066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1949066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 1959066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Gets the current rating (number of stars filled). 1969066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 1979066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @return The current rating. 1989066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 1999066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public float getRating() { 2009066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return getProgress() / getProgressPerStar(); 2019066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 2029066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 2039066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 2049066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Sets the step size (granularity) of this rating bar. 2059066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 2069066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param stepSize The step size of this rating bar. For example, if 2079066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * half-star granularity is wanted, this would be 0.5. 2089066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 2099066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public void setStepSize(float stepSize) { 2109066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (stepSize <= 0) { 2119066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return; 2129066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 2139066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 2149066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final float newMax = mNumStars / stepSize; 2159066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int newProgress = (int) (newMax / getMax() * getProgress()); 2169066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project setMax((int) newMax); 2179066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project setProgress(newProgress); 2189066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 2199066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 2209066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 2219066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Gets the step size of this rating bar. 2229066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 2239066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @return The step size. 2249066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 2259066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public float getStepSize() { 2269066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return (float) getNumStars() / getMax(); 2279066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 2289066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 2299066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 2309066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @return The amount of progress that fits into a star 2319066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 2329066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private float getProgressPerStar() { 2339066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (mNumStars > 0) { 2349066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return 1f * getMax() / mNumStars; 2359066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } else { 2369066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return 1; 2379066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 2389066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 2399066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 2409066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project @Override 2419066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project Shape getDrawableShape() { 2429066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // TODO: Once ProgressBar's TODOs are fixed, this won't be needed 2439066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return new RectShape(); 2449066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 2459066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 2469066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project @Override 2479066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project void onProgressRefresh(float scale, boolean fromUser) { 2489066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project super.onProgressRefresh(scale, fromUser); 2499066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 2509066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Keep secondary progress in sync with primary 2519066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project updateSecondaryProgress(getProgress()); 2529066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 2539066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (!fromUser) { 2549066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Callback for non-user rating changes 2559066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project dispatchRatingChange(false); 2569066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 2579066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 2589066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 2599066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 2609066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * The secondary progress is used to differentiate the background of a 2619066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * partially filled star. This method keeps the secondary progress in sync 2629066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * with the progress. 2639066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 2649066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param progress The primary progress level. 2659066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 2669066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private void updateSecondaryProgress(int progress) { 2679066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final float ratio = getProgressPerStar(); 2689066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (ratio > 0) { 2699066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final float progressInStars = progress / ratio; 2709066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int secondaryProgress = (int) (Math.ceil(progressInStars) * ratio); 2719066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project setSecondaryProgress(secondaryProgress); 2729066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 2739066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 2749066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 2759066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project @Override 2769066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project protected synchronized void onMeasure(int widthMeasureSpec, int heightMeasureSpec) { 2779066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project super.onMeasure(widthMeasureSpec, heightMeasureSpec); 2789066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 2799066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (mSampleTile != null) { 2809066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // TODO: Once ProgressBar's TODOs are gone, this can be done more 2819066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // cleanly than mSampleTile 2829066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int width = mSampleTile.getWidth() * mNumStars; 283189ee18d6c6483ad63cc864267328259e2e00b95Dianne Hackborn setMeasuredDimension(resolveSizeAndState(width, widthMeasureSpec, 0), 284189ee18d6c6483ad63cc864267328259e2e00b95Dianne Hackborn getMeasuredHeight()); 2859066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 2869066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 2879066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 2889066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project @Override 2899066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project void onStartTrackingTouch() { 2909066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mProgressOnStartTracking = getProgress(); 2919066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 2929066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project super.onStartTrackingTouch(); 2939066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 2949066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 2959066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project @Override 2969066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project void onStopTrackingTouch() { 2979066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project super.onStopTrackingTouch(); 2989066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 2999066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (getProgress() != mProgressOnStartTracking) { 3009066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project dispatchRatingChange(true); 3019066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 3029066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 303105925376f8d0f6b318c9938c7b83ef7fef094daThe Android Open Source Project 304105925376f8d0f6b318c9938c7b83ef7fef094daThe Android Open Source Project @Override 305105925376f8d0f6b318c9938c7b83ef7fef094daThe Android Open Source Project void onKeyChange() { 306105925376f8d0f6b318c9938c7b83ef7fef094daThe Android Open Source Project super.onKeyChange(); 307105925376f8d0f6b318c9938c7b83ef7fef094daThe Android Open Source Project dispatchRatingChange(true); 308105925376f8d0f6b318c9938c7b83ef7fef094daThe Android Open Source Project } 309105925376f8d0f6b318c9938c7b83ef7fef094daThe Android Open Source Project 3109066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project void dispatchRatingChange(boolean fromUser) { 3119066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (mOnRatingBarChangeListener != null) { 3129066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mOnRatingBarChangeListener.onRatingChanged(this, getRating(), 3139066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project fromUser); 3149066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 3159066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 3169066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 3179066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project @Override 3189066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public synchronized void setMax(int max) { 3199066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Disallow max progress = 0 3209066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (max <= 0) { 3219066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return; 3229066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 3239066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 3249066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project super.setMax(max); 3259066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 3269066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 3279066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project} 328