RotateAnimation.java revision 84c949f3b130c9f375203cdb4a3cc4af6b38a4f3
19066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project/* 29066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Copyright (C) 2006 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.view.animation; 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.util.AttributeSet; 229066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 239066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project/** 249066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * An animation that controls the rotation of an object. This rotation takes 259066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * place int the X-Y plane. You can specify the point to use for the center of 269066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * the rotation, where (0,0) is the top left point. If not specified, (0,0) is 279066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * the default rotation point. 289066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 299066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 309066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Projectpublic class RotateAnimation extends Animation { 319066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private float mFromDegrees; 329066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private float mToDegrees; 339066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 349066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private int mPivotXType = ABSOLUTE; 359066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private int mPivotYType = ABSOLUTE; 369066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private float mPivotXValue = 0.0f; 379066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private float mPivotYValue = 0.0f; 389066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 399066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private float mPivotX; 409066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private float mPivotY; 419066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 429066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 43bdbdc4f92951200a88d4c754448b9f91626ffc04The Android Open Source Project * Constructor used when a RotateAnimation is loaded from a resource. 449066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 459066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param context Application context to use 469066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param attrs Attribute set from which to read values 479066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 489066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public RotateAnimation(Context context, AttributeSet attrs) { 499066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project super(context, attrs); 509066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 519066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project TypedArray a = context.obtainStyledAttributes(attrs, 529066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project com.android.internal.R.styleable.RotateAnimation); 539066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 549066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mFromDegrees = a.getFloat( 559066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project com.android.internal.R.styleable.RotateAnimation_fromDegrees, 0.0f); 569066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mToDegrees = a.getFloat(com.android.internal.R.styleable.RotateAnimation_toDegrees, 0.0f); 579066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 589066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project Description d = Description.parseValue(a.peekValue( 599066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project com.android.internal.R.styleable.RotateAnimation_pivotX)); 609066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mPivotXType = d.type; 619066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mPivotXValue = d.value; 629066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 639066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project d = Description.parseValue(a.peekValue( 649066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project com.android.internal.R.styleable.RotateAnimation_pivotY)); 659066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mPivotYType = d.type; 669066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mPivotYValue = d.value; 679066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 689066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project a.recycle(); 6984c949f3b130c9f375203cdb4a3cc4af6b38a4f3Chet Haase 7084c949f3b130c9f375203cdb4a3cc4af6b38a4f3Chet Haase initializePivotPoint(); 719066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 729066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 739066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 749066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Constructor to use when building a RotateAnimation from code. 759066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Default pivotX/pivotY point is (0,0). 769066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 779066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param fromDegrees Rotation offset to apply at the start of the 789066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * animation. 799066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 809066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param toDegrees Rotation offset to apply at the end of the animation. 819066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 829066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public RotateAnimation(float fromDegrees, float toDegrees) { 839066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mFromDegrees = fromDegrees; 849066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mToDegrees = toDegrees; 859066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mPivotX = 0.0f; 869066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mPivotY = 0.0f; 879066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 889066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 899066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 909066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Constructor to use when building a RotateAnimation from code 919066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 929066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param fromDegrees Rotation offset to apply at the start of the 939066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * animation. 949066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 959066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param toDegrees Rotation offset to apply at the end of the animation. 969066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 979066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param pivotX The X coordinate of the point about which the object is 989066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * being rotated, specified as an absolute number where 0 is the left 999066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * edge. 1009066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param pivotY The Y coordinate of the point about which the object is 1019066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * being rotated, specified as an absolute number where 0 is the top 1029066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * edge. 1039066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 1049066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public RotateAnimation(float fromDegrees, float toDegrees, float pivotX, float pivotY) { 1059066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mFromDegrees = fromDegrees; 1069066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mToDegrees = toDegrees; 1079066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1089066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mPivotXType = ABSOLUTE; 1099066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mPivotYType = ABSOLUTE; 1109066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mPivotXValue = pivotX; 1119066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mPivotYValue = pivotY; 11284c949f3b130c9f375203cdb4a3cc4af6b38a4f3Chet Haase initializePivotPoint(); 1139066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 1149066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1159066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 1169066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Constructor to use when building a RotateAnimation from code 1179066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 1189066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param fromDegrees Rotation offset to apply at the start of the 1199066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * animation. 1209066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 1219066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param toDegrees Rotation offset to apply at the end of the animation. 1229066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 1239066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param pivotXType Specifies how pivotXValue should be interpreted. One of 1249066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Animation.ABSOLUTE, Animation.RELATIVE_TO_SELF, or 1259066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Animation.RELATIVE_TO_PARENT. 1269066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param pivotXValue The X coordinate of the point about which the object 1279066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * is being rotated, specified as an absolute number where 0 is the 1289066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * left edge. This value can either be an absolute number if 1299066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * pivotXType is ABSOLUTE, or a percentage (where 1.0 is 100%) 1309066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * otherwise. 1319066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param pivotYType Specifies how pivotYValue should be interpreted. One of 1329066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Animation.ABSOLUTE, Animation.RELATIVE_TO_SELF, or 1339066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Animation.RELATIVE_TO_PARENT. 1349066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param pivotYValue The Y coordinate of the point about which the object 1359066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * is being rotated, specified as an absolute number where 0 is the 1369066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * top edge. This value can either be an absolute number if 1379066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * pivotYType is ABSOLUTE, or a percentage (where 1.0 is 100%) 1389066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * otherwise. 1399066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 1409066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public RotateAnimation(float fromDegrees, float toDegrees, int pivotXType, float pivotXValue, 1419066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int pivotYType, float pivotYValue) { 1429066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mFromDegrees = fromDegrees; 1439066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mToDegrees = toDegrees; 1449066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1459066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mPivotXValue = pivotXValue; 1469066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mPivotXType = pivotXType; 1479066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mPivotYValue = pivotYValue; 1489066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mPivotYType = pivotYType; 14984c949f3b130c9f375203cdb4a3cc4af6b38a4f3Chet Haase initializePivotPoint(); 15084c949f3b130c9f375203cdb4a3cc4af6b38a4f3Chet Haase } 15184c949f3b130c9f375203cdb4a3cc4af6b38a4f3Chet Haase 15284c949f3b130c9f375203cdb4a3cc4af6b38a4f3Chet Haase /** 15384c949f3b130c9f375203cdb4a3cc4af6b38a4f3Chet Haase * Called at the end of constructor methods to initialize, if possible, values for 15484c949f3b130c9f375203cdb4a3cc4af6b38a4f3Chet Haase * the pivot point. This is only possible for ABSOLUTE pivot values. 15584c949f3b130c9f375203cdb4a3cc4af6b38a4f3Chet Haase */ 15684c949f3b130c9f375203cdb4a3cc4af6b38a4f3Chet Haase private void initializePivotPoint() { 15784c949f3b130c9f375203cdb4a3cc4af6b38a4f3Chet Haase if (mPivotXType == ABSOLUTE) { 15884c949f3b130c9f375203cdb4a3cc4af6b38a4f3Chet Haase mPivotX = mPivotXValue; 15984c949f3b130c9f375203cdb4a3cc4af6b38a4f3Chet Haase } 16084c949f3b130c9f375203cdb4a3cc4af6b38a4f3Chet Haase if (mPivotYType == ABSOLUTE) { 16184c949f3b130c9f375203cdb4a3cc4af6b38a4f3Chet Haase mPivotY = mPivotYValue; 16284c949f3b130c9f375203cdb4a3cc4af6b38a4f3Chet Haase } 1639066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 1649066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1659066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project @Override 1669066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project protected void applyTransformation(float interpolatedTime, Transformation t) { 1679066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project float degrees = mFromDegrees + ((mToDegrees - mFromDegrees) * interpolatedTime); 1684846032ac7be7c28c7cfeb3096b8cb656312a382Chet Haase float scale = getScaleFactor(); 1694846032ac7be7c28c7cfeb3096b8cb656312a382Chet Haase 1709066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (mPivotX == 0.0f && mPivotY == 0.0f) { 1719066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project t.getMatrix().setRotate(degrees); 1729066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } else { 1734846032ac7be7c28c7cfeb3096b8cb656312a382Chet Haase t.getMatrix().setRotate(degrees, mPivotX * scale, mPivotY * scale); 1749066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 1759066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 1769066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1779066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project @Override 1789066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public void initialize(int width, int height, int parentWidth, int parentHeight) { 1799066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project super.initialize(width, height, parentWidth, parentHeight); 1809066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mPivotX = resolveSize(mPivotXType, mPivotXValue, width, parentWidth); 1819066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mPivotY = resolveSize(mPivotYType, mPivotYValue, height, parentHeight); 1829066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 1839066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project} 184