| /* |
| * Copyright (C) 2015 The Android Open Source Project |
| * |
| * 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 android.support.design.widget; |
| |
| import android.animation.Animator; |
| import android.animation.AnimatorListenerAdapter; |
| import android.animation.ValueAnimator; |
| import android.content.Context; |
| import android.content.res.ColorStateList; |
| import android.graphics.Color; |
| import android.graphics.PorterDuff; |
| import android.graphics.Rect; |
| import android.graphics.drawable.Drawable; |
| import android.graphics.drawable.GradientDrawable; |
| import android.graphics.drawable.LayerDrawable; |
| import android.os.Build; |
| import android.support.annotation.NonNull; |
| import android.support.annotation.Nullable; |
| import android.support.annotation.RequiresApi; |
| import android.support.design.R; |
| import android.support.v4.content.ContextCompat; |
| import android.support.v4.graphics.drawable.DrawableCompat; |
| import android.support.v4.view.ViewCompat; |
| import android.view.View; |
| import android.view.ViewTreeObserver; |
| import android.view.animation.Interpolator; |
| |
| @RequiresApi(14) |
| class FloatingActionButtonImpl { |
| static final Interpolator ANIM_INTERPOLATOR = AnimationUtils.FAST_OUT_LINEAR_IN_INTERPOLATOR; |
| static final long PRESSED_ANIM_DURATION = 100; |
| static final long PRESSED_ANIM_DELAY = 100; |
| |
| static final int ANIM_STATE_NONE = 0; |
| static final int ANIM_STATE_HIDING = 1; |
| static final int ANIM_STATE_SHOWING = 2; |
| |
| int mAnimState = ANIM_STATE_NONE; |
| |
| private final StateListAnimator mStateListAnimator; |
| |
| ShadowDrawableWrapper mShadowDrawable; |
| |
| private float mRotation; |
| |
| Drawable mShapeDrawable; |
| Drawable mRippleDrawable; |
| CircularBorderDrawable mBorderDrawable; |
| Drawable mContentBackground; |
| |
| float mElevation; |
| float mPressedTranslationZ; |
| |
| interface InternalVisibilityChangedListener { |
| void onShown(); |
| void onHidden(); |
| } |
| |
| static final int SHOW_HIDE_ANIM_DURATION = 200; |
| |
| static final int[] PRESSED_ENABLED_STATE_SET = {android.R.attr.state_pressed, |
| android.R.attr.state_enabled}; |
| static final int[] FOCUSED_ENABLED_STATE_SET = {android.R.attr.state_focused, |
| android.R.attr.state_enabled}; |
| static final int[] ENABLED_STATE_SET = {android.R.attr.state_enabled}; |
| static final int[] EMPTY_STATE_SET = new int[0]; |
| |
| final VisibilityAwareImageButton mView; |
| final ShadowViewDelegate mShadowViewDelegate; |
| |
| private final Rect mTmpRect = new Rect(); |
| private ViewTreeObserver.OnPreDrawListener mPreDrawListener; |
| |
| FloatingActionButtonImpl(VisibilityAwareImageButton view, |
| ShadowViewDelegate shadowViewDelegate) { |
| mView = view; |
| mShadowViewDelegate = shadowViewDelegate; |
| |
| mStateListAnimator = new StateListAnimator(); |
| |
| // Elevate with translationZ when pressed or focused |
| mStateListAnimator.addState(PRESSED_ENABLED_STATE_SET, |
| createAnimator(new ElevateToTranslationZAnimation())); |
| mStateListAnimator.addState(FOCUSED_ENABLED_STATE_SET, |
| createAnimator(new ElevateToTranslationZAnimation())); |
| // Reset back to elevation by default |
| mStateListAnimator.addState(ENABLED_STATE_SET, |
| createAnimator(new ResetElevationAnimation())); |
| // Set to 0 when disabled |
| mStateListAnimator.addState(EMPTY_STATE_SET, |
| createAnimator(new DisabledElevationAnimation())); |
| |
| mRotation = mView.getRotation(); |
| } |
| |
| void setBackgroundDrawable(ColorStateList backgroundTint, |
| PorterDuff.Mode backgroundTintMode, int rippleColor, int borderWidth) { |
| // Now we need to tint the original background with the tint, using |
| // an InsetDrawable if we have a border width |
| mShapeDrawable = DrawableCompat.wrap(createShapeDrawable()); |
| DrawableCompat.setTintList(mShapeDrawable, backgroundTint); |
| if (backgroundTintMode != null) { |
| DrawableCompat.setTintMode(mShapeDrawable, backgroundTintMode); |
| } |
| |
| // Now we created a mask Drawable which will be used for touch feedback. |
| GradientDrawable touchFeedbackShape = createShapeDrawable(); |
| |
| // We'll now wrap that touch feedback mask drawable with a ColorStateList. We do not need |
| // to inset for any border here as LayerDrawable will nest the padding for us |
| mRippleDrawable = DrawableCompat.wrap(touchFeedbackShape); |
| DrawableCompat.setTintList(mRippleDrawable, createColorStateList(rippleColor)); |
| |
| final Drawable[] layers; |
| if (borderWidth > 0) { |
| mBorderDrawable = createBorderDrawable(borderWidth, backgroundTint); |
| layers = new Drawable[] {mBorderDrawable, mShapeDrawable, mRippleDrawable}; |
| } else { |
| mBorderDrawable = null; |
| layers = new Drawable[] {mShapeDrawable, mRippleDrawable}; |
| } |
| |
| mContentBackground = new LayerDrawable(layers); |
| |
| mShadowDrawable = new ShadowDrawableWrapper( |
| mView.getContext(), |
| mContentBackground, |
| mShadowViewDelegate.getRadius(), |
| mElevation, |
| mElevation + mPressedTranslationZ); |
| mShadowDrawable.setAddPaddingForCorners(false); |
| mShadowViewDelegate.setBackgroundDrawable(mShadowDrawable); |
| } |
| |
| void setBackgroundTintList(ColorStateList tint) { |
| if (mShapeDrawable != null) { |
| DrawableCompat.setTintList(mShapeDrawable, tint); |
| } |
| if (mBorderDrawable != null) { |
| mBorderDrawable.setBorderTint(tint); |
| } |
| } |
| |
| void setBackgroundTintMode(PorterDuff.Mode tintMode) { |
| if (mShapeDrawable != null) { |
| DrawableCompat.setTintMode(mShapeDrawable, tintMode); |
| } |
| } |
| |
| |
| void setRippleColor(int rippleColor) { |
| if (mRippleDrawable != null) { |
| DrawableCompat.setTintList(mRippleDrawable, createColorStateList(rippleColor)); |
| } |
| } |
| |
| final void setElevation(float elevation) { |
| if (mElevation != elevation) { |
| mElevation = elevation; |
| onElevationsChanged(elevation, mPressedTranslationZ); |
| } |
| } |
| |
| float getElevation() { |
| return mElevation; |
| } |
| |
| final void setPressedTranslationZ(float translationZ) { |
| if (mPressedTranslationZ != translationZ) { |
| mPressedTranslationZ = translationZ; |
| onElevationsChanged(mElevation, translationZ); |
| } |
| } |
| |
| void onElevationsChanged(float elevation, float pressedTranslationZ) { |
| if (mShadowDrawable != null) { |
| mShadowDrawable.setShadowSize(elevation, elevation + mPressedTranslationZ); |
| updatePadding(); |
| } |
| } |
| |
| void onDrawableStateChanged(int[] state) { |
| mStateListAnimator.setState(state); |
| } |
| |
| void jumpDrawableToCurrentState() { |
| mStateListAnimator.jumpToCurrentState(); |
| } |
| |
| void hide(@Nullable final InternalVisibilityChangedListener listener, final boolean fromUser) { |
| if (isOrWillBeHidden()) { |
| // We either are or will soon be hidden, skip the call |
| return; |
| } |
| |
| mView.animate().cancel(); |
| |
| if (shouldAnimateVisibilityChange()) { |
| mAnimState = ANIM_STATE_HIDING; |
| |
| mView.animate() |
| .scaleX(0f) |
| .scaleY(0f) |
| .alpha(0f) |
| .setDuration(SHOW_HIDE_ANIM_DURATION) |
| .setInterpolator(AnimationUtils.FAST_OUT_LINEAR_IN_INTERPOLATOR) |
| .setListener(new AnimatorListenerAdapter() { |
| private boolean mCancelled; |
| |
| @Override |
| public void onAnimationStart(Animator animation) { |
| mView.internalSetVisibility(View.VISIBLE, fromUser); |
| mCancelled = false; |
| } |
| |
| @Override |
| public void onAnimationCancel(Animator animation) { |
| mCancelled = true; |
| } |
| |
| @Override |
| public void onAnimationEnd(Animator animation) { |
| mAnimState = ANIM_STATE_NONE; |
| |
| if (!mCancelled) { |
| mView.internalSetVisibility(fromUser ? View.GONE : View.INVISIBLE, |
| fromUser); |
| if (listener != null) { |
| listener.onHidden(); |
| } |
| } |
| } |
| }); |
| } else { |
| // If the view isn't laid out, or we're in the editor, don't run the animation |
| mView.internalSetVisibility(fromUser ? View.GONE : View.INVISIBLE, fromUser); |
| if (listener != null) { |
| listener.onHidden(); |
| } |
| } |
| } |
| |
| void show(@Nullable final InternalVisibilityChangedListener listener, final boolean fromUser) { |
| if (isOrWillBeShown()) { |
| // We either are or will soon be visible, skip the call |
| return; |
| } |
| |
| mView.animate().cancel(); |
| |
| if (shouldAnimateVisibilityChange()) { |
| mAnimState = ANIM_STATE_SHOWING; |
| |
| if (mView.getVisibility() != View.VISIBLE) { |
| // If the view isn't visible currently, we'll animate it from a single pixel |
| mView.setAlpha(0f); |
| mView.setScaleY(0f); |
| mView.setScaleX(0f); |
| } |
| |
| mView.animate() |
| .scaleX(1f) |
| .scaleY(1f) |
| .alpha(1f) |
| .setDuration(SHOW_HIDE_ANIM_DURATION) |
| .setInterpolator(AnimationUtils.LINEAR_OUT_SLOW_IN_INTERPOLATOR) |
| .setListener(new AnimatorListenerAdapter() { |
| @Override |
| public void onAnimationStart(Animator animation) { |
| mView.internalSetVisibility(View.VISIBLE, fromUser); |
| } |
| |
| @Override |
| public void onAnimationEnd(Animator animation) { |
| mAnimState = ANIM_STATE_NONE; |
| if (listener != null) { |
| listener.onShown(); |
| } |
| } |
| }); |
| } else { |
| mView.internalSetVisibility(View.VISIBLE, fromUser); |
| mView.setAlpha(1f); |
| mView.setScaleY(1f); |
| mView.setScaleX(1f); |
| if (listener != null) { |
| listener.onShown(); |
| } |
| } |
| } |
| |
| final Drawable getContentBackground() { |
| return mContentBackground; |
| } |
| |
| void onCompatShadowChanged() { |
| // Ignore pre-v21 |
| } |
| |
| final void updatePadding() { |
| Rect rect = mTmpRect; |
| getPadding(rect); |
| onPaddingUpdated(rect); |
| mShadowViewDelegate.setShadowPadding(rect.left, rect.top, rect.right, rect.bottom); |
| } |
| |
| void getPadding(Rect rect) { |
| mShadowDrawable.getPadding(rect); |
| } |
| |
| void onPaddingUpdated(Rect padding) {} |
| |
| void onAttachedToWindow() { |
| if (requirePreDrawListener()) { |
| ensurePreDrawListener(); |
| mView.getViewTreeObserver().addOnPreDrawListener(mPreDrawListener); |
| } |
| } |
| |
| void onDetachedFromWindow() { |
| if (mPreDrawListener != null) { |
| mView.getViewTreeObserver().removeOnPreDrawListener(mPreDrawListener); |
| mPreDrawListener = null; |
| } |
| } |
| |
| boolean requirePreDrawListener() { |
| return true; |
| } |
| |
| CircularBorderDrawable createBorderDrawable(int borderWidth, ColorStateList backgroundTint) { |
| final Context context = mView.getContext(); |
| CircularBorderDrawable borderDrawable = newCircularDrawable(); |
| borderDrawable.setGradientColors( |
| ContextCompat.getColor(context, R.color.design_fab_stroke_top_outer_color), |
| ContextCompat.getColor(context, R.color.design_fab_stroke_top_inner_color), |
| ContextCompat.getColor(context, R.color.design_fab_stroke_end_inner_color), |
| ContextCompat.getColor(context, R.color.design_fab_stroke_end_outer_color)); |
| borderDrawable.setBorderWidth(borderWidth); |
| borderDrawable.setBorderTint(backgroundTint); |
| return borderDrawable; |
| } |
| |
| CircularBorderDrawable newCircularDrawable() { |
| return new CircularBorderDrawable(); |
| } |
| |
| void onPreDraw() { |
| final float rotation = mView.getRotation(); |
| if (mRotation != rotation) { |
| mRotation = rotation; |
| updateFromViewRotation(); |
| } |
| } |
| |
| private void ensurePreDrawListener() { |
| if (mPreDrawListener == null) { |
| mPreDrawListener = new ViewTreeObserver.OnPreDrawListener() { |
| @Override |
| public boolean onPreDraw() { |
| FloatingActionButtonImpl.this.onPreDraw(); |
| return true; |
| } |
| }; |
| } |
| } |
| |
| GradientDrawable createShapeDrawable() { |
| GradientDrawable d = newGradientDrawableForShape(); |
| d.setShape(GradientDrawable.OVAL); |
| d.setColor(Color.WHITE); |
| return d; |
| } |
| |
| GradientDrawable newGradientDrawableForShape() { |
| return new GradientDrawable(); |
| } |
| |
| boolean isOrWillBeShown() { |
| if (mView.getVisibility() != View.VISIBLE) { |
| // If we not currently visible, return true if we're animating to be shown |
| return mAnimState == ANIM_STATE_SHOWING; |
| } else { |
| // Otherwise if we're visible, return true if we're not animating to be hidden |
| return mAnimState != ANIM_STATE_HIDING; |
| } |
| } |
| |
| boolean isOrWillBeHidden() { |
| if (mView.getVisibility() == View.VISIBLE) { |
| // If we currently visible, return true if we're animating to be hidden |
| return mAnimState == ANIM_STATE_HIDING; |
| } else { |
| // Otherwise if we're not visible, return true if we're not animating to be shown |
| return mAnimState != ANIM_STATE_SHOWING; |
| } |
| } |
| |
| private ValueAnimator createAnimator(@NonNull ShadowAnimatorImpl impl) { |
| final ValueAnimator animator = new ValueAnimator(); |
| animator.setInterpolator(ANIM_INTERPOLATOR); |
| animator.setDuration(PRESSED_ANIM_DURATION); |
| animator.addListener(impl); |
| animator.addUpdateListener(impl); |
| animator.setFloatValues(0, 1); |
| return animator; |
| } |
| |
| private abstract class ShadowAnimatorImpl extends AnimatorListenerAdapter |
| implements ValueAnimator.AnimatorUpdateListener { |
| private boolean mValidValues; |
| private float mShadowSizeStart; |
| private float mShadowSizeEnd; |
| |
| @Override |
| public void onAnimationUpdate(ValueAnimator animator) { |
| if (!mValidValues) { |
| mShadowSizeStart = mShadowDrawable.getShadowSize(); |
| mShadowSizeEnd = getTargetShadowSize(); |
| mValidValues = true; |
| } |
| |
| mShadowDrawable.setShadowSize(mShadowSizeStart |
| + ((mShadowSizeEnd - mShadowSizeStart) * animator.getAnimatedFraction())); |
| } |
| |
| @Override |
| public void onAnimationEnd(Animator animator) { |
| mShadowDrawable.setShadowSize(mShadowSizeEnd); |
| mValidValues = false; |
| } |
| |
| /** |
| * @return the shadow size we want to animate to. |
| */ |
| protected abstract float getTargetShadowSize(); |
| } |
| |
| private class ResetElevationAnimation extends ShadowAnimatorImpl { |
| ResetElevationAnimation() { |
| } |
| |
| @Override |
| protected float getTargetShadowSize() { |
| return mElevation; |
| } |
| } |
| |
| private class ElevateToTranslationZAnimation extends ShadowAnimatorImpl { |
| ElevateToTranslationZAnimation() { |
| } |
| |
| @Override |
| protected float getTargetShadowSize() { |
| return mElevation + mPressedTranslationZ; |
| } |
| } |
| |
| private class DisabledElevationAnimation extends ShadowAnimatorImpl { |
| DisabledElevationAnimation() { |
| } |
| |
| @Override |
| protected float getTargetShadowSize() { |
| return 0f; |
| } |
| } |
| |
| private static ColorStateList createColorStateList(int selectedColor) { |
| final int[][] states = new int[3][]; |
| final int[] colors = new int[3]; |
| int i = 0; |
| |
| states[i] = FOCUSED_ENABLED_STATE_SET; |
| colors[i] = selectedColor; |
| i++; |
| |
| states[i] = PRESSED_ENABLED_STATE_SET; |
| colors[i] = selectedColor; |
| i++; |
| |
| // Default enabled state |
| states[i] = new int[0]; |
| colors[i] = Color.TRANSPARENT; |
| i++; |
| |
| return new ColorStateList(states, colors); |
| } |
| |
| private boolean shouldAnimateVisibilityChange() { |
| return ViewCompat.isLaidOut(mView) && !mView.isInEditMode(); |
| } |
| |
| private void updateFromViewRotation() { |
| if (Build.VERSION.SDK_INT == 19) { |
| // KitKat seems to have an issue with views which are rotated with angles which are |
| // not divisible by 90. Worked around by moving to software rendering in these cases. |
| if ((mRotation % 90) != 0) { |
| if (mView.getLayerType() != View.LAYER_TYPE_SOFTWARE) { |
| mView.setLayerType(View.LAYER_TYPE_SOFTWARE, null); |
| } |
| } else { |
| if (mView.getLayerType() != View.LAYER_TYPE_NONE) { |
| mView.setLayerType(View.LAYER_TYPE_NONE, null); |
| } |
| } |
| } |
| |
| // Offset any View rotation |
| if (mShadowDrawable != null) { |
| mShadowDrawable.setRotation(-mRotation); |
| } |
| if (mBorderDrawable != null) { |
| mBorderDrawable.setRotation(-mRotation); |
| } |
| } |
| } |
