@ -17,180 +17,27 @@
* /
package org.floens.chan.ui.animation ;
import android.animation.Animator ;
import android.animation.AnimatorListenerAdapter ;
import android.animation.ArgbEvaluator ;
import android.animation.ValueAnimator ;
import android.graphics.drawable.ColorDrawable ;
import android.view.View ;
import android.view.ViewGroup ;
import android.view.animation.DecelerateInterpolator ;
import android.widget.TextView ;
import java.util.HashMap ;
import java.util.Map ;
public class AnimationUtils {
public static int interpolate ( int a , int b , float x ) {
return ( int ) ( a + ( b - a ) * x ) ;
}
// a lot of these are deprecated, they animate the height with the layout params themselves,
// causing a measure loop for each frame. android just isn't designed for this, and it always
// lags. there are better ways to easily animate layouts, such as enabling the layoutAnimations
// flag.
@Deprecated
public static void setHeight ( View view , boolean expand , boolean animated ) {
setHeight ( view , expand , animated , - 1 ) ;
}
@Deprecated
public static void setHeight ( View view , boolean expand , boolean animated , int knownWidth ) {
if ( animated ) {
animateHeight ( view , expand , knownWidth ) ;
} else {
view . setVisibility ( expand ? View . VISIBLE : View . GONE ) ;
}
}
private static Map < View , ValueAnimator > layoutAnimations = new HashMap < > ( ) ;
@Deprecated
public static int animateHeight ( final View view , boolean expand ) {
return animateHeight ( view , expand , - 1 ) ;
}
@Deprecated
public static int animateHeight ( final View view , final boolean expand , int knownWidth ) {
return animateHeight ( view , expand , knownWidth , 300 ) ;
}
@Deprecated
public static int animateHeight ( final View view , final boolean expand , int knownWidth , int duration ) {
return animateHeight ( view , expand , knownWidth , duration , null ) ;
}
/ * *
* Animate the height of a view by changing the layoutParams . height value . < br >
* view . measure is used to figure out the height .
* Use knownWidth when the width of the view has not been measured yet . < br >
* You can call this even when a height animation is currently running , it will resolve any issues . < br >
* < b > This does cause some lag on complex views because requestLayout is called on each frame . < / b >
* /
@Deprecated
public static int animateHeight ( final View view , final boolean expand , int knownWidth , int duration , final LayoutAnimationProgress progressCallback ) {
final int fromHeight ;
int toHeight ;
if ( expand ) {
int width = knownWidth < 0 ? view . getWidth ( ) : knownWidth ;
view . measure (
View . MeasureSpec . makeMeasureSpec ( width , View . MeasureSpec . EXACTLY ) ,
View . MeasureSpec . UNSPECIFIED ) ;
fromHeight = view . getHeight ( ) ;
toHeight = view . getMeasuredHeight ( ) ;
} else {
fromHeight = view . getHeight ( ) ;
toHeight = 0 ;
}
animateLayout ( true , view , fromHeight , toHeight , duration , true , progressCallback ) ;
return toHeight ;
}
@Deprecated
public static void animateLayout ( final boolean vertical , final View view , final int from , final int to , int duration , final boolean wrapAfterwards , final LayoutAnimationProgress callback ) {
ValueAnimator running = layoutAnimations . remove ( view ) ;
if ( running ! = null ) {
running . cancel ( ) ;
}
ValueAnimator valueAnimator = ValueAnimator . ofInt ( from , to ) ;
valueAnimator . addUpdateListener ( new ValueAnimator . AnimatorUpdateListener ( ) {
@Override
public void onAnimationUpdate ( ValueAnimator animation ) {
int value = ( int ) animation . getAnimatedValue ( ) ;
// Looks better
if ( value = = 1 ) {
value = 0 ;
}
if ( vertical ) {
view . getLayoutParams ( ) . height = value ;
} else {
view . getLayoutParams ( ) . width = value ;
}
view . requestLayout ( ) ;
if ( callback ! = null ) {
callback . onLayoutAnimationProgress ( view , vertical , from , to , value , animation . getAnimatedFraction ( ) ) ;
}
}
} ) ;
valueAnimator . addListener ( new AnimatorListenerAdapter ( ) {
@Override
public void onAnimationStart ( Animator animation ) {
view . setVisibility ( View . VISIBLE ) ;
}
@Override
public void onAnimationEnd ( Animator animation ) {
if ( to > 0 ) {
if ( wrapAfterwards ) {
if ( vertical ) {
view . getLayoutParams ( ) . height = ViewGroup . LayoutParams . WRAP_CONTENT ;
} else {
view . getLayoutParams ( ) . width = ViewGroup . LayoutParams . WRAP_CONTENT ;
}
}
} else {
if ( vertical ) {
view . getLayoutParams ( ) . height = 0 ;
} else {
view . getLayoutParams ( ) . width = 0 ;
}
view . setVisibility ( View . GONE ) ;
}
view . requestLayout ( ) ;
layoutAnimations . remove ( view ) ;
}
} ) ;
valueAnimator . setInterpolator ( new DecelerateInterpolator ( 2f ) ) ;
valueAnimator . setDuration ( duration ) ;
valueAnimator . start ( ) ;
layoutAnimations . put ( view , valueAnimator ) ;
}
@Deprecated
public interface LayoutAnimationProgress {
@Deprecated
void onLayoutAnimationProgress ( View view , boolean vertical , int from , int to , int value , float progress ) ;
}
public static void animateTextColor ( final TextView text , int to ) {
ValueAnimator animation = ValueAnimator . ofObject ( new ArgbEvaluator ( ) , text . getCurrentTextColor ( ) , to ) ;
animation . addUpdateListener ( new ValueAnimator . AnimatorUpdateListener ( ) {
@Override
public void onAnimationUpdate ( ValueAnimator animation ) {
text . setTextColor ( ( int ) animation . getAnimatedValue ( ) ) ;
}
} ) ;
animation . addUpdateListener ( a - > text . setTextColor ( ( int ) a . getAnimatedValue ( ) ) ) ;
animation . start ( ) ;
}
public static void animateBackgroundColorDrawable ( final View view , int newColor ) {
int currentBackground = ( ( ColorDrawable ) view . getBackground ( ) ) . getColor ( ) ;
ValueAnimator animation = ValueAnimator . ofObject ( new ArgbEvaluator ( ) , currentBackground , newColor ) ;
animation . addUpdateListener ( new ValueAnimator . AnimatorUpdateListener ( ) {
@Override
public void onAnimationUpdate ( ValueAnimator animation ) {
view . setBackgroundColor ( ( int ) animation . getAnimatedValue ( ) ) ;
}
} ) ;
animation . addUpdateListener ( a - > view . setBackgroundColor ( ( int ) a . getAnimatedValue ( ) ) ) ;
animation . start ( ) ;
}
}
Floens
8 years ago