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Move key preview related methods to KeyPreviewChoreographer 

Change-Id: Ia8d6b7fa922a4da233bf851b2e94bbd2573a65a3
main
Tadashi G. Takaoka 2014-02-04 16:08:10 +09:00
parent f2749e41e4
commit bb476be4e6
3 changed files with 299 additions and 231 deletions
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245
java/src/com/android/inputmethod/keyboard/MainKeyboardView.java
View File

@ -16,10 +16,7 @@
package com.android.inputmethod.keyboard;
import android.animation.Animator;
import android.animation.AnimatorInflater;
import android.animation.AnimatorListenerAdapter;
import android.animation.AnimatorSet;
import android.animation.ObjectAnimator;
import android.content.Context;
import android.content.SharedPreferences;
@ -35,13 +32,10 @@ import android.preference.PreferenceManager;
import android.util.AttributeSet;
import android.util.DisplayMetrics;
import android.util.Log;
import android.util.TypedValue;
import android.view.LayoutInflater;
import android.view.MotionEvent;
import android.view.View;
import android.view.ViewGroup;
import android.view.animation.AccelerateInterpolator;
import android.view.animation.DecelerateInterpolator;
import android.view.inputmethod.InputMethodSubtype;
import android.widget.TextView;
@ -53,6 +47,7 @@ import com.android.inputmethod.keyboard.internal.DrawingPreviewPlacerView;
import com.android.inputmethod.keyboard.internal.GestureFloatingTextDrawingPreview;
import com.android.inputmethod.keyboard.internal.GestureTrailsDrawingPreview;
import com.android.inputmethod.keyboard.internal.KeyDrawParams;
import com.android.inputmethod.keyboard.internal.KeyPreviewChoreographer;
import com.android.inputmethod.keyboard.internal.KeyPreviewDrawParams;
import com.android.inputmethod.keyboard.internal.NonDistinctMultitouchHelper;
import com.android.inputmethod.keyboard.internal.SlidingKeyInputDrawingPreview;
@ -71,9 +66,6 @@ import com.android.inputmethod.latin.utils.UsabilityStudyLogUtils;
import com.android.inputmethod.latin.utils.ViewLayoutUtils;
import com.android.inputmethod.research.ResearchLogger;
import java.util.ArrayDeque;
import java.util.HashMap;
import java.util.HashSet;
import java.util.WeakHashMap;
/**
@ -161,18 +153,8 @@ public final class MainKeyboardView extends KeyboardView implements PointerTrack
// Key preview
private static final boolean FADE_OUT_KEY_TOP_LETTER_WHEN_KEY_IS_PRESSED = false;
// Free {@link TextView} pool that can be used for key preview.
private final ArrayDeque<TextView> mFreeKeyPreviewTextViews = CollectionUtils.newArrayDeque();
// Map from {@link Key} to {@link TextView} that is currently being displayed as key preview.
private final HashMap<Key,TextView> mShowingKeyPreviewTextViews = CollectionUtils.newHashMap();
private final KeyPreviewDrawParams mKeyPreviewDrawParams;
private static final float KEY_PREVIEW_START_ZOOM_IN_SCALE = 0.7f;
private static final float KEY_PREVIEW_END_ZOOM_IN_SCALE = 1.0f;
private static final float KEY_PREVIEW_END_ZOOM_OUT_SCALE = 0.7f;
private static final AccelerateInterpolator ACCELERATE_INTERPOLATOR =
new AccelerateInterpolator();
private static final DecelerateInterpolator DECELERATE_INTERPOLATOR =
new DecelerateInterpolator();
private final KeyPreviewChoreographer mKeyPreviewChoreographer;
// More keys keyboard
private final Paint mBackgroundDimAlphaPaint = new Paint();
@ -261,6 +243,8 @@ public final class MainKeyboardView extends KeyboardView implements PointerTrack
R.styleable.MainKeyboardView_altCodeKeyWhileTypingFadeinAnimator, 0);
mKeyPreviewDrawParams = new KeyPreviewDrawParams(mainKeyboardViewAttr);
mKeyPreviewChoreographer = new KeyPreviewChoreographer(mKeyPreviewDrawParams);
final int moreKeysKeyboardLayoutId = mainKeyboardViewAttr.getResourceId(
R.styleable.MainKeyboardView_moreKeysKeyboardLayout, 0);
mConfigShowMoreKeysKeyboardAtTouchedPoint = mainKeyboardViewAttr.getBoolean(
@ -477,60 +461,13 @@ public final class MainKeyboardView extends KeyboardView implements PointerTrack
return mKeyPreviewDrawParams.isPopupEnabled();
}
private TextView getKeyPreviewTextView(final Key key) {
TextView previewTextView = mShowingKeyPreviewTextViews.remove(key);
if (previewTextView != null) {
return previewTextView;
}
previewTextView = mFreeKeyPreviewTextViews.poll();
if (previewTextView != null) {
return previewTextView;
}
final Context context = getContext();
final int previewLayoutId = mKeyPreviewDrawParams.mLayoutId;
if (previewLayoutId != 0) {
previewTextView = (TextView)LayoutInflater.from(context)
.inflate(previewLayoutId, null);
} else {
previewTextView = new TextView(context);
}
locatePreviewPlacerView();
mDrawingPreviewPlacerView.addView(
previewTextView, ViewLayoutUtils.newLayoutParam(mDrawingPreviewPlacerView, 0, 0));
return previewTextView;
}
// Implements {@link DrawingHandler.Callbacks} method.
@Override
public void dismissAllKeyPreviews() {
for (final Key key : new HashSet<Key>(mShowingKeyPreviewTextViews.keySet())) {
dismissKeyPreviewWithoutDelay(key);
}
mKeyPreviewChoreographer.dismissAllKeyPreviews();
PointerTracker.setReleasedKeyGraphicsToAllKeys();
}
// Background state set
private static final int[][][] KEY_PREVIEW_BACKGROUND_STATE_TABLE = {
{ // STATE_MIDDLE
EMPTY_STATE_SET,
{ R.attr.state_has_morekeys }
},
{ // STATE_LEFT
{ R.attr.state_left_edge },
{ R.attr.state_left_edge, R.attr.state_has_morekeys }
},
{ // STATE_RIGHT
{ R.attr.state_right_edge },
{ R.attr.state_right_edge, R.attr.state_has_morekeys }
}
};
private static final int STATE_MIDDLE = 0;
private static final int STATE_LEFT = 1;
private static final int STATE_RIGHT = 2;
private static final int STATE_NORMAL = 0;
private static final int STATE_HAS_MOREKEYS = 1;
// TODO: Take this method out of this class.
@Override
public void showKeyPreview(final Key key) {
// If key is invalid or IME is already closed, we must not show key preview.
@ -547,185 +484,31 @@ public final class MainKeyboardView extends KeyboardView implements PointerTrack
return;
}
final TextView previewTextView = getKeyPreviewTextView(key);
final KeyDrawParams drawParams = mKeyDrawParams;
previewTextView.setTextColor(drawParams.mPreviewTextColor);
final Drawable background = previewTextView.getBackground();
final String label = key.getPreviewLabel();
// What we show as preview should match what we show on a key top in onDraw().
if (label != null) {
// TODO Should take care of temporaryShiftLabel here.
previewTextView.setCompoundDrawables(null, null, null, null);
previewTextView.setTextSize(TypedValue.COMPLEX_UNIT_PX,
key.selectPreviewTextSize(drawParams));
previewTextView.setTypeface(key.selectPreviewTypeface(drawParams));
previewTextView.setText(label);
} else {
previewTextView.setCompoundDrawables(null, null, null,
key.getPreviewIcon(keyboard.mIconsSet));
previewTextView.setText(null);
}
previewTextView.measure(
ViewGroup.LayoutParams.WRAP_CONTENT, ViewGroup.LayoutParams.WRAP_CONTENT);
final int keyDrawWidth = key.getDrawWidth();
final int previewWidth = previewTextView.getMeasuredWidth();
final int previewHeight = previewParams.mPreviewHeight;
previewParams.setGeometry(previewTextView);
locatePreviewPlacerView();
final TextView previewTextView = mKeyPreviewChoreographer.getKeyPreviewTextView(
key, mDrawingPreviewPlacerView);
getLocationInWindow(mOriginCoords);
// The key preview is horizontally aligned with the center of the visible part of the
// parent key. If it doesn't fit in this {@link KeyboardView}, it is moved inward to fit and
// the left/right background is used if such background is specified.
final int statePosition;
int previewX = key.getDrawX() - (previewWidth - keyDrawWidth) / 2
+ CoordinateUtils.x(mOriginCoords);
if (previewX < 0) {
previewX = 0;
statePosition = STATE_LEFT;
} else if (previewX > getWidth() - previewWidth) {
previewX = getWidth() - previewWidth;
statePosition = STATE_RIGHT;
} else {
statePosition = STATE_MIDDLE;
}
// The key preview is placed vertically above the top edge of the parent key with an
// arbitrary offset.
final int previewY = key.getY() - previewHeight + previewParams.mPreviewOffset
+ CoordinateUtils.y(mOriginCoords);
if (background != null) {
final int hasMoreKeys = (key.getMoreKeys() != null) ? STATE_HAS_MOREKEYS : STATE_NORMAL;
background.setState(KEY_PREVIEW_BACKGROUND_STATE_TABLE[statePosition][hasMoreKeys]);
}
ViewLayoutUtils.placeViewAt(
previewTextView, previewX, previewY, previewWidth, previewHeight);
if (!isHardwareAccelerated()) {
previewTextView.setVisibility(VISIBLE);
mShowingKeyPreviewTextViews.put(key, previewTextView);
return;
}
previewTextView.setPivotX(previewWidth / 2.0f);
previewTextView.setPivotY(previewHeight);
final Animator zoomIn = createZoomInAniation(key, previewTextView);
final Animator zoomOut = createZoomOutAnimation(key, previewTextView);
final KeyPreviewAnimations animation = new KeyPreviewAnimations(zoomIn, zoomOut);
previewTextView.setTag(animation);
animation.startZoomIn();
}
// TODO: Move this internal class out to a separate external class.
private static class KeyPreviewAnimations extends AnimatorListenerAdapter {
private final Animator mZoomIn;
private final Animator mZoomOut;
public KeyPreviewAnimations(final Animator zoomIn, final Animator zoomOut) {
mZoomIn = zoomIn;
mZoomOut = zoomOut;
}
public void startZoomIn() {
mZoomIn.start();
}
public void startZoomOut() {
if (mZoomIn.isRunning()) {
mZoomIn.addListener(this);
return;
}
mZoomOut.start();
}
@Override
public void onAnimationEnd(final Animator animation) {
mZoomOut.start();
}
}
// TODO: Take this method out of this class.
private Animator createZoomInAniation(final Key key, final TextView previewTextView) {
final ObjectAnimator scaleXAnimation = ObjectAnimator.ofFloat(
previewTextView, SCALE_X, KEY_PREVIEW_START_ZOOM_IN_SCALE,
KEY_PREVIEW_END_ZOOM_IN_SCALE);
final ObjectAnimator scaleYAnimation = ObjectAnimator.ofFloat(
previewTextView, SCALE_Y, KEY_PREVIEW_START_ZOOM_IN_SCALE,
KEY_PREVIEW_END_ZOOM_IN_SCALE);
final AnimatorSet zoomInAnimation = new AnimatorSet();
zoomInAnimation.play(scaleXAnimation).with(scaleYAnimation);
// TODO: Implement preference option to control key preview animation duration.
zoomInAnimation.setDuration(mKeyPreviewDrawParams.mZoomInDuration);
zoomInAnimation.setInterpolator(DECELERATE_INTERPOLATOR);
zoomInAnimation.addListener(new AnimatorListenerAdapter() {
@Override
public void onAnimationStart(final Animator animation) {
previewTextView.setVisibility(VISIBLE);
mShowingKeyPreviewTextViews.put(key, previewTextView);
}
});
return zoomInAnimation;
}
// TODO: Take this method out of this class.
private Animator createZoomOutAnimation(final Key key, final TextView previewTextView) {
final ObjectAnimator scaleXAnimation = ObjectAnimator.ofFloat(
previewTextView, SCALE_X, KEY_PREVIEW_END_ZOOM_OUT_SCALE);
final ObjectAnimator scaleYAnimation = ObjectAnimator.ofFloat(
previewTextView, SCALE_Y, KEY_PREVIEW_END_ZOOM_OUT_SCALE);
final AnimatorSet zoomOutAnimation = new AnimatorSet();
zoomOutAnimation.play(scaleXAnimation).with(scaleYAnimation);
// TODO: Implement preference option to control key preview animation duration.
final int zoomOutDuration = Math.min(mKeyPreviewDrawParams.mZoomOutDuration,
mKeyPreviewDrawParams.getLingerTimeout());
zoomOutAnimation.setDuration(zoomOutDuration);
zoomOutAnimation.setInterpolator(ACCELERATE_INTERPOLATOR);
zoomOutAnimation.addListener(new AnimatorListenerAdapter() {
@Override
public void onAnimationEnd(final Animator animation) {
dismissKeyPreviewWithoutDelay(key);
}
});
return zoomOutAnimation;
mKeyPreviewChoreographer.placeKeyPreview(key, previewTextView, keyboard.mIconsSet,
mKeyDrawParams, getWidth(), mOriginCoords);
mKeyPreviewChoreographer.showKeyPreview(key, previewTextView, isHardwareAccelerated());
}
// Implements {@link TimerHandler.Callbacks} method.
// TODO: Take this method out of this class.
@Override
public void dismissKeyPreviewWithoutDelay(final Key key) {
if (key == null) {
return;
}
final TextView previewTextView = mShowingKeyPreviewTextViews.remove(key);
if (previewTextView != null) {
final Object tag = previewTextView.getTag();
if (tag instanceof Animator) {
((Animator)tag).cancel();
}
previewTextView.setTag(null);
previewTextView.setVisibility(INVISIBLE);
mFreeKeyPreviewTextViews.add(previewTextView);
}
mKeyPreviewChoreographer.dismissKeyPreview(key, false /* withAnimation */);
// To redraw key top letter.
invalidateKey(key);
}
// TODO: Take this method out of this class.
@Override
public void dismissKeyPreview(final Key key) {
final TextView previewTextView = mShowingKeyPreviewTextViews.get(key);
if (previewTextView == null) {
return;
}
if (!isHardwareAccelerated()) {
// TODO: Implement preference option to control key preview method and duration.
mDrawingHandler.dismissKeyPreview(mKeyPreviewDrawParams.getLingerTimeout(), key);
return;
}
final Object tag = previewTextView.getTag();
if (tag instanceof KeyPreviewAnimations) {
final KeyPreviewAnimations animation = (KeyPreviewAnimations)tag;
animation.startZoomOut();
}
mKeyPreviewChoreographer.dismissKeyPreview(key, true /* withAnimation */);
}
public void setSlidingKeyInputPreviewEnabled(final boolean enabled) {
@ -1098,7 +881,7 @@ public final class MainKeyboardView extends KeyboardView implements PointerTrack
}
// Don't draw key top letter when key preview is showing.
if (FADE_OUT_KEY_TOP_LETTER_WHEN_KEY_IS_PRESSED
&& mShowingKeyPreviewTextViews.containsKey(key)) {
&& mKeyPreviewChoreographer.isShowingKeyPreview(key)) {
// TODO: Fade out animation for the key top letter, and fade in animation for the key
// background color when the user presses the key.
return;

284
java/src/com/android/inputmethod/keyboard/internal/KeyPreviewChoreographer.java Normal file
View File

@ -0,0 +1,284 @@
/*
* Copyright (C) 2014 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 com.android.inputmethod.keyboard.internal;
import android.animation.Animator;
import android.animation.AnimatorListenerAdapter;
import android.animation.AnimatorSet;
import android.animation.ObjectAnimator;
import android.content.Context;
import android.graphics.drawable.Drawable;
import android.util.TypedValue;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.view.animation.AccelerateInterpolator;
import android.view.animation.DecelerateInterpolator;
import android.widget.TextView;
import com.android.inputmethod.keyboard.Key;
import com.android.inputmethod.latin.R;
import com.android.inputmethod.latin.utils.CollectionUtils;
import com.android.inputmethod.latin.utils.CoordinateUtils;
import com.android.inputmethod.latin.utils.ViewLayoutUtils;
import java.util.ArrayDeque;
import java.util.HashMap;
import java.util.HashSet;
/**
* This class controls pop up key previews. This class decides:
* - what kind of key previews should be shown.
* - where key previews should be placed.
* - how key previews should be shown and dismissed.
*/
public final class KeyPreviewChoreographer {
// Free {@link TextView} pool that can be used for key preview.
private final ArrayDeque<TextView> mFreeKeyPreviewTextViews = CollectionUtils.newArrayDeque();
// Map from {@link Key} to {@link TextView} that is currently being displayed as key preview.
private final HashMap<Key,TextView> mShowingKeyPreviewTextViews = CollectionUtils.newHashMap();
private final KeyPreviewDrawParams mParams;
public KeyPreviewChoreographer(final KeyPreviewDrawParams params) {
mParams = params;
}
public TextView getKeyPreviewTextView(final Key key, final ViewGroup placerView) {
TextView previewTextView = mShowingKeyPreviewTextViews.remove(key);
if (previewTextView != null) {
return previewTextView;
}
previewTextView = mFreeKeyPreviewTextViews.poll();
if (previewTextView != null) {
return previewTextView;
}
final Context context = placerView.getContext();
if (mParams.mLayoutId != 0) {
previewTextView = (TextView)LayoutInflater.from(context)
.inflate(mParams.mLayoutId, null);
} else {
previewTextView = new TextView(context);
}
placerView.addView(previewTextView, ViewLayoutUtils.newLayoutParam(placerView, 0, 0));
return previewTextView;
}
public boolean isShowingKeyPreview(final Key key) {
return mShowingKeyPreviewTextViews.containsKey(key);
}
public void dismissAllKeyPreviews() {
for (final Key key : new HashSet<Key>(mShowingKeyPreviewTextViews.keySet())) {
dismissKeyPreview(key, false /* withAnimation */);
}
}
public void dismissKeyPreview(final Key key, final boolean withAnimation) {
if (key == null) {
return;
}
final TextView previewTextView = mShowingKeyPreviewTextViews.get(key);
if (previewTextView == null) {
return;
}
final Object tag = previewTextView.getTag();
if (withAnimation) {
if (tag instanceof KeyPreviewAnimations) {
final KeyPreviewAnimations animation = (KeyPreviewAnimations)tag;
animation.startZoomOut();
}
return;
}
// Dismiss preview without animation.
if (tag instanceof Animator) {
((Animator)tag).cancel();
}
previewTextView.setTag(null);
previewTextView.setVisibility(View.INVISIBLE);
mFreeKeyPreviewTextViews.add(previewTextView);
}
// Background state set
private static final int[][][] KEY_PREVIEW_BACKGROUND_STATE_TABLE = {
{ // STATE_MIDDLE
{},
{ R.attr.state_has_morekeys }
},
{ // STATE_LEFT
{ R.attr.state_left_edge },
{ R.attr.state_left_edge, R.attr.state_has_morekeys }
},
{ // STATE_RIGHT
{ R.attr.state_right_edge },
{ R.attr.state_right_edge, R.attr.state_has_morekeys }
}
};
private static final int STATE_MIDDLE = 0;
private static final int STATE_LEFT = 1;
private static final int STATE_RIGHT = 2;
private static final int STATE_NORMAL = 0;
private static final int STATE_HAS_MOREKEYS = 1;
public void placeKeyPreview(final Key key, final TextView previewTextView,
final KeyboardIconsSet iconsSet, final KeyDrawParams drawParams,
final int keyboardViewWidth, final int[] originCoords) {
previewTextView.setTextColor(drawParams.mPreviewTextColor);
final Drawable background = previewTextView.getBackground();
final String label = key.getPreviewLabel();
// What we show as preview should match what we show on a key top in onDraw().
if (label != null) {
// TODO Should take care of temporaryShiftLabel here.
previewTextView.setCompoundDrawables(null, null, null, null);
previewTextView.setTextSize(TypedValue.COMPLEX_UNIT_PX,
key.selectPreviewTextSize(drawParams));
previewTextView.setTypeface(key.selectPreviewTypeface(drawParams));
previewTextView.setText(label);
} else {
previewTextView.setCompoundDrawables(null, null, null, key.getPreviewIcon(iconsSet));
previewTextView.setText(null);
}
previewTextView.measure(
ViewGroup.LayoutParams.WRAP_CONTENT, ViewGroup.LayoutParams.WRAP_CONTENT);
mParams.setGeometry(previewTextView);
final int previewWidth = previewTextView.getMeasuredWidth();
final int previewHeight = mParams.mPreviewHeight;
final int keyDrawWidth = key.getDrawWidth();
// The key preview is horizontally aligned with the center of the visible part of the
// parent key. If it doesn't fit in this {@link KeyboardView}, it is moved inward to fit and
// the left/right background is used if such background is specified.
final int statePosition;
int previewX = key.getDrawX() - (previewWidth - keyDrawWidth) / 2
+ CoordinateUtils.x(originCoords);
if (previewX < 0) {
previewX = 0;
statePosition = STATE_LEFT;
} else if (previewX > keyboardViewWidth - previewWidth) {
previewX = keyboardViewWidth - previewWidth;
statePosition = STATE_RIGHT;
} else {
statePosition = STATE_MIDDLE;
}
// The key preview is placed vertically above the top edge of the parent key with an
// arbitrary offset.
final int previewY = key.getY() - previewHeight + mParams.mPreviewOffset
+ CoordinateUtils.y(originCoords);
if (background != null) {
final int hasMoreKeys = (key.getMoreKeys() != null) ? STATE_HAS_MOREKEYS : STATE_NORMAL;
background.setState(KEY_PREVIEW_BACKGROUND_STATE_TABLE[statePosition][hasMoreKeys]);
}
ViewLayoutUtils.placeViewAt(
previewTextView, previewX, previewY, previewWidth, previewHeight);
previewTextView.setPivotX(previewWidth / 2.0f);
previewTextView.setPivotY(previewHeight);
}
public void showKeyPreview(final Key key, final TextView previewTextView,
final boolean withAnimation) {
if (!withAnimation) {
previewTextView.setVisibility(View.VISIBLE);
mShowingKeyPreviewTextViews.put(key, previewTextView);
return;
}
// Show preview with animation.
final Animator zoomIn = createZoomInAniation(key, previewTextView);
final Animator zoomOut = createZoomOutAnimation(key, previewTextView);
final KeyPreviewAnimations animation = new KeyPreviewAnimations(zoomIn, zoomOut);
previewTextView.setTag(animation);
animation.startZoomIn();
}
// TODO: Move these parameters to resources or preferences.
private static final float KEY_PREVIEW_START_ZOOM_IN_SCALE = 0.7f;
private static final float KEY_PREVIEW_END_ZOOM_IN_SCALE = 1.0f;
private static final float KEY_PREVIEW_END_ZOOM_OUT_SCALE = 0.7f;
private static final AccelerateInterpolator ACCELERATE_INTERPOLATOR =
new AccelerateInterpolator();
private static final DecelerateInterpolator DECELERATE_INTERPOLATOR =
new DecelerateInterpolator();
private Animator createZoomInAniation(final Key key, final TextView previewTextView) {
final ObjectAnimator scaleXAnimation = ObjectAnimator.ofFloat(
previewTextView, View.SCALE_X, KEY_PREVIEW_START_ZOOM_IN_SCALE,
KEY_PREVIEW_END_ZOOM_IN_SCALE);
final ObjectAnimator scaleYAnimation = ObjectAnimator.ofFloat(
previewTextView, View.SCALE_Y, KEY_PREVIEW_START_ZOOM_IN_SCALE,
KEY_PREVIEW_END_ZOOM_IN_SCALE);
final AnimatorSet zoomInAnimation = new AnimatorSet();
zoomInAnimation.play(scaleXAnimation).with(scaleYAnimation);
// TODO: Implement preference option to control key preview animation duration.
zoomInAnimation.setDuration(mParams.mZoomInDuration);
zoomInAnimation.setInterpolator(DECELERATE_INTERPOLATOR);
zoomInAnimation.addListener(new AnimatorListenerAdapter() {
@Override
public void onAnimationStart(final Animator animation) {
showKeyPreview(key, previewTextView, false /* withAnimation */);
}
});
return zoomInAnimation;
}
private Animator createZoomOutAnimation(final Key key, final TextView previewTextView) {
final ObjectAnimator scaleXAnimation = ObjectAnimator.ofFloat(
previewTextView, View.SCALE_X, KEY_PREVIEW_END_ZOOM_OUT_SCALE);
final ObjectAnimator scaleYAnimation = ObjectAnimator.ofFloat(
previewTextView, View.SCALE_Y, KEY_PREVIEW_END_ZOOM_OUT_SCALE);
final AnimatorSet zoomOutAnimation = new AnimatorSet();
zoomOutAnimation.play(scaleXAnimation).with(scaleYAnimation);
// TODO: Implement preference option to control key preview animation duration.
final int zoomOutDuration = Math.min(mParams.mZoomOutDuration, mParams.getLingerTimeout());
zoomOutAnimation.setDuration(zoomOutDuration);
zoomOutAnimation.setInterpolator(ACCELERATE_INTERPOLATOR);
zoomOutAnimation.addListener(new AnimatorListenerAdapter() {
@Override
public void onAnimationEnd(final Animator animation) {
dismissKeyPreview(key, false /* withAnimation */);
}
});
return zoomOutAnimation;
}
private static class KeyPreviewAnimations extends AnimatorListenerAdapter {
private final Animator mZoomIn;
private final Animator mZoomOut;
public KeyPreviewAnimations(final Animator zoomIn, final Animator zoomOut) {
mZoomIn = zoomIn;
mZoomOut = zoomOut;
}
public void startZoomIn() {
mZoomIn.start();
}
public void startZoomOut() {
if (mZoomIn.isRunning()) {
mZoomIn.addListener(this);
return;
}
mZoomOut.start();
}
@Override
public void onAnimationEnd(final Animator animation) {
mZoomOut.start();
}
}
}

1
java/src/com/android/inputmethod/keyboard/internal/KeyPreviewDrawParams.java
View File

@ -26,6 +26,7 @@ public final class KeyPreviewDrawParams {
public final int mLayoutId;
public final int mPreviewOffset;
public final int mPreviewHeight;
// TODO: Move those parameters to preferences.
public final int mZoomInDuration;
public final int mZoomOutDuration;
private int mLingerTimeout;