dc25d25333
- fix DrawableContainerState.getChangingConfigurations() to take care about its children - make Resources.verifyPreloadConfig() return false when the changing configuration contains layout direction bits (this is when a Drawable is having different version for LTR and RTL layout directions) - use constant state instead of the resource type value for checking if we can preload the drawable - fix typo Change-Id: Idd64caf0fbe0f5cfd5ffe09343e84bafa9446ea5
715 lines
23 KiB
Java
715 lines
23 KiB
Java
/*
|
|
* Copyright (C) 2006 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.graphics.drawable;
|
|
|
|
import android.content.res.Resources;
|
|
import android.graphics.Canvas;
|
|
import android.graphics.ColorFilter;
|
|
import android.graphics.Insets;
|
|
import android.graphics.PixelFormat;
|
|
import android.graphics.Rect;
|
|
import android.os.SystemClock;
|
|
|
|
/**
|
|
* A helper class that contains several {@link Drawable}s and selects which one to use.
|
|
*
|
|
* You can subclass it to create your own DrawableContainers or directly use one its child classes.
|
|
*/
|
|
public class DrawableContainer extends Drawable implements Drawable.Callback {
|
|
private static final boolean DEBUG = false;
|
|
private static final String TAG = "DrawableContainer";
|
|
|
|
/**
|
|
* To be proper, we should have a getter for dither (and alpha, etc.)
|
|
* so that proxy classes like this can save/restore their delegates'
|
|
* values, but we don't have getters. Since we do have setters
|
|
* (e.g. setDither), which this proxy forwards on, we have to have some
|
|
* default/initial setting.
|
|
*
|
|
* The initial setting for dither is now true, since it almost always seems
|
|
* to improve the quality at negligible cost.
|
|
*/
|
|
private static final boolean DEFAULT_DITHER = true;
|
|
private DrawableContainerState mDrawableContainerState;
|
|
private Drawable mCurrDrawable;
|
|
private int mAlpha = 0xFF;
|
|
private ColorFilter mColorFilter;
|
|
|
|
private int mCurIndex = -1;
|
|
private boolean mMutated;
|
|
|
|
// Animations.
|
|
private Runnable mAnimationRunnable;
|
|
private long mEnterAnimationEnd;
|
|
private long mExitAnimationEnd;
|
|
private Drawable mLastDrawable;
|
|
|
|
// overrides from Drawable
|
|
|
|
@Override
|
|
public void draw(Canvas canvas) {
|
|
if (mCurrDrawable != null) {
|
|
mCurrDrawable.draw(canvas);
|
|
}
|
|
if (mLastDrawable != null) {
|
|
mLastDrawable.draw(canvas);
|
|
}
|
|
}
|
|
|
|
@Override
|
|
public int getChangingConfigurations() {
|
|
return super.getChangingConfigurations()
|
|
| mDrawableContainerState.mChangingConfigurations
|
|
| mDrawableContainerState.mChildrenChangingConfigurations;
|
|
}
|
|
|
|
@Override
|
|
public boolean getPadding(Rect padding) {
|
|
final Rect r = mDrawableContainerState.getConstantPadding();
|
|
if (r != null) {
|
|
padding.set(r);
|
|
return true;
|
|
}
|
|
if (mCurrDrawable != null) {
|
|
return mCurrDrawable.getPadding(padding);
|
|
} else {
|
|
return super.getPadding(padding);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* @hide
|
|
*/
|
|
@Override
|
|
public Insets getOpticalInsets() {
|
|
return (mCurrDrawable == null) ? Insets.NONE : mCurrDrawable.getOpticalInsets();
|
|
}
|
|
|
|
@Override
|
|
public void setAlpha(int alpha) {
|
|
if (mAlpha != alpha) {
|
|
mAlpha = alpha;
|
|
if (mCurrDrawable != null) {
|
|
if (mEnterAnimationEnd == 0) {
|
|
mCurrDrawable.mutate().setAlpha(alpha);
|
|
} else {
|
|
animate(false);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
@Override
|
|
public void setDither(boolean dither) {
|
|
if (mDrawableContainerState.mDither != dither) {
|
|
mDrawableContainerState.mDither = dither;
|
|
if (mCurrDrawable != null) {
|
|
mCurrDrawable.mutate().setDither(mDrawableContainerState.mDither);
|
|
}
|
|
}
|
|
}
|
|
|
|
@Override
|
|
public void setColorFilter(ColorFilter cf) {
|
|
if (mColorFilter != cf) {
|
|
mColorFilter = cf;
|
|
if (mCurrDrawable != null) {
|
|
mCurrDrawable.mutate().setColorFilter(cf);
|
|
}
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Change the global fade duration when a new drawable is entering
|
|
* the scene.
|
|
* @param ms The amount of time to fade in milliseconds.
|
|
*/
|
|
public void setEnterFadeDuration(int ms) {
|
|
mDrawableContainerState.mEnterFadeDuration = ms;
|
|
}
|
|
|
|
/**
|
|
* Change the global fade duration when a new drawable is leaving
|
|
* the scene.
|
|
* @param ms The amount of time to fade in milliseconds.
|
|
*/
|
|
public void setExitFadeDuration(int ms) {
|
|
mDrawableContainerState.mExitFadeDuration = ms;
|
|
}
|
|
|
|
@Override
|
|
protected void onBoundsChange(Rect bounds) {
|
|
if (mLastDrawable != null) {
|
|
mLastDrawable.setBounds(bounds);
|
|
}
|
|
if (mCurrDrawable != null) {
|
|
mCurrDrawable.setBounds(bounds);
|
|
}
|
|
}
|
|
|
|
@Override
|
|
public boolean isStateful() {
|
|
return mDrawableContainerState.isStateful();
|
|
}
|
|
|
|
@Override
|
|
public void jumpToCurrentState() {
|
|
boolean changed = false;
|
|
if (mLastDrawable != null) {
|
|
mLastDrawable.jumpToCurrentState();
|
|
mLastDrawable = null;
|
|
changed = true;
|
|
}
|
|
if (mCurrDrawable != null) {
|
|
mCurrDrawable.jumpToCurrentState();
|
|
mCurrDrawable.mutate().setAlpha(mAlpha);
|
|
}
|
|
if (mExitAnimationEnd != 0) {
|
|
mExitAnimationEnd = 0;
|
|
changed = true;
|
|
}
|
|
if (mEnterAnimationEnd != 0) {
|
|
mEnterAnimationEnd = 0;
|
|
changed = true;
|
|
}
|
|
if (changed) {
|
|
invalidateSelf();
|
|
}
|
|
}
|
|
|
|
@Override
|
|
protected boolean onStateChange(int[] state) {
|
|
if (mLastDrawable != null) {
|
|
return mLastDrawable.setState(state);
|
|
}
|
|
if (mCurrDrawable != null) {
|
|
return mCurrDrawable.setState(state);
|
|
}
|
|
return false;
|
|
}
|
|
|
|
@Override
|
|
protected boolean onLevelChange(int level) {
|
|
if (mLastDrawable != null) {
|
|
return mLastDrawable.setLevel(level);
|
|
}
|
|
if (mCurrDrawable != null) {
|
|
return mCurrDrawable.setLevel(level);
|
|
}
|
|
return false;
|
|
}
|
|
|
|
@Override
|
|
public int getIntrinsicWidth() {
|
|
if (mDrawableContainerState.isConstantSize()) {
|
|
return mDrawableContainerState.getConstantWidth();
|
|
}
|
|
return mCurrDrawable != null ? mCurrDrawable.getIntrinsicWidth() : -1;
|
|
}
|
|
|
|
@Override
|
|
public int getIntrinsicHeight() {
|
|
if (mDrawableContainerState.isConstantSize()) {
|
|
return mDrawableContainerState.getConstantHeight();
|
|
}
|
|
return mCurrDrawable != null ? mCurrDrawable.getIntrinsicHeight() : -1;
|
|
}
|
|
|
|
@Override
|
|
public int getMinimumWidth() {
|
|
if (mDrawableContainerState.isConstantSize()) {
|
|
return mDrawableContainerState.getConstantMinimumWidth();
|
|
}
|
|
return mCurrDrawable != null ? mCurrDrawable.getMinimumWidth() : 0;
|
|
}
|
|
|
|
@Override
|
|
public int getMinimumHeight() {
|
|
if (mDrawableContainerState.isConstantSize()) {
|
|
return mDrawableContainerState.getConstantMinimumHeight();
|
|
}
|
|
return mCurrDrawable != null ? mCurrDrawable.getMinimumHeight() : 0;
|
|
}
|
|
|
|
public void invalidateDrawable(Drawable who) {
|
|
if (who == mCurrDrawable && getCallback() != null) {
|
|
getCallback().invalidateDrawable(this);
|
|
}
|
|
}
|
|
|
|
public void scheduleDrawable(Drawable who, Runnable what, long when) {
|
|
if (who == mCurrDrawable && getCallback() != null) {
|
|
getCallback().scheduleDrawable(this, what, when);
|
|
}
|
|
}
|
|
|
|
public void unscheduleDrawable(Drawable who, Runnable what) {
|
|
if (who == mCurrDrawable && getCallback() != null) {
|
|
getCallback().unscheduleDrawable(this, what);
|
|
}
|
|
}
|
|
|
|
@Override
|
|
public boolean setVisible(boolean visible, boolean restart) {
|
|
boolean changed = super.setVisible(visible, restart);
|
|
if (mLastDrawable != null) {
|
|
mLastDrawable.setVisible(visible, restart);
|
|
}
|
|
if (mCurrDrawable != null) {
|
|
mCurrDrawable.setVisible(visible, restart);
|
|
}
|
|
return changed;
|
|
}
|
|
|
|
@Override
|
|
public int getOpacity() {
|
|
return mCurrDrawable == null || !mCurrDrawable.isVisible() ? PixelFormat.TRANSPARENT :
|
|
mDrawableContainerState.getOpacity();
|
|
}
|
|
|
|
public boolean selectDrawable(int idx) {
|
|
if (idx == mCurIndex) {
|
|
return false;
|
|
}
|
|
|
|
final long now = SystemClock.uptimeMillis();
|
|
|
|
if (DEBUG) android.util.Log.i(TAG, toString() + " from " + mCurIndex + " to " + idx
|
|
+ ": exit=" + mDrawableContainerState.mExitFadeDuration
|
|
+ " enter=" + mDrawableContainerState.mEnterFadeDuration);
|
|
|
|
if (mDrawableContainerState.mExitFadeDuration > 0) {
|
|
if (mLastDrawable != null) {
|
|
mLastDrawable.setVisible(false, false);
|
|
}
|
|
if (mCurrDrawable != null) {
|
|
mLastDrawable = mCurrDrawable;
|
|
mExitAnimationEnd = now + mDrawableContainerState.mExitFadeDuration;
|
|
} else {
|
|
mLastDrawable = null;
|
|
mExitAnimationEnd = 0;
|
|
}
|
|
} else if (mCurrDrawable != null) {
|
|
mCurrDrawable.setVisible(false, false);
|
|
}
|
|
|
|
if (idx >= 0 && idx < mDrawableContainerState.mNumChildren) {
|
|
Drawable d = mDrawableContainerState.mDrawables[idx];
|
|
mCurrDrawable = d;
|
|
mCurIndex = idx;
|
|
if (d != null) {
|
|
d.mutate();
|
|
if (mDrawableContainerState.mEnterFadeDuration > 0) {
|
|
mEnterAnimationEnd = now + mDrawableContainerState.mEnterFadeDuration;
|
|
} else {
|
|
d.setAlpha(mAlpha);
|
|
}
|
|
d.setVisible(isVisible(), true);
|
|
d.setDither(mDrawableContainerState.mDither);
|
|
d.setColorFilter(mColorFilter);
|
|
d.setState(getState());
|
|
d.setLevel(getLevel());
|
|
d.setBounds(getBounds());
|
|
}
|
|
} else {
|
|
mCurrDrawable = null;
|
|
mCurIndex = -1;
|
|
}
|
|
|
|
if (mEnterAnimationEnd != 0 || mExitAnimationEnd != 0) {
|
|
if (mAnimationRunnable == null) {
|
|
mAnimationRunnable = new Runnable() {
|
|
@Override public void run() {
|
|
animate(true);
|
|
invalidateSelf();
|
|
}
|
|
};
|
|
} else {
|
|
unscheduleSelf(mAnimationRunnable);
|
|
}
|
|
// Compute first frame and schedule next animation.
|
|
animate(true);
|
|
}
|
|
|
|
invalidateSelf();
|
|
|
|
return true;
|
|
}
|
|
|
|
void animate(boolean schedule) {
|
|
final long now = SystemClock.uptimeMillis();
|
|
boolean animating = false;
|
|
if (mCurrDrawable != null) {
|
|
if (mEnterAnimationEnd != 0) {
|
|
if (mEnterAnimationEnd <= now) {
|
|
mCurrDrawable.mutate().setAlpha(mAlpha);
|
|
mEnterAnimationEnd = 0;
|
|
} else {
|
|
int animAlpha = (int)((mEnterAnimationEnd-now)*255)
|
|
/ mDrawableContainerState.mEnterFadeDuration;
|
|
if (DEBUG) android.util.Log.i(TAG, toString() + " cur alpha " + animAlpha);
|
|
mCurrDrawable.mutate().setAlpha(((255-animAlpha)*mAlpha)/255);
|
|
animating = true;
|
|
}
|
|
}
|
|
} else {
|
|
mEnterAnimationEnd = 0;
|
|
}
|
|
if (mLastDrawable != null) {
|
|
if (mExitAnimationEnd != 0) {
|
|
if (mExitAnimationEnd <= now) {
|
|
mLastDrawable.setVisible(false, false);
|
|
mLastDrawable = null;
|
|
mExitAnimationEnd = 0;
|
|
} else {
|
|
int animAlpha = (int)((mExitAnimationEnd-now)*255)
|
|
/ mDrawableContainerState.mExitFadeDuration;
|
|
if (DEBUG) android.util.Log.i(TAG, toString() + " last alpha " + animAlpha);
|
|
mLastDrawable.mutate().setAlpha((animAlpha*mAlpha)/255);
|
|
animating = true;
|
|
}
|
|
}
|
|
} else {
|
|
mExitAnimationEnd = 0;
|
|
}
|
|
|
|
if (schedule && animating) {
|
|
scheduleSelf(mAnimationRunnable, now + 1000/60);
|
|
}
|
|
}
|
|
|
|
@Override
|
|
public Drawable getCurrent() {
|
|
return mCurrDrawable;
|
|
}
|
|
|
|
@Override
|
|
public ConstantState getConstantState() {
|
|
if (mDrawableContainerState.canConstantState()) {
|
|
mDrawableContainerState.mChangingConfigurations = getChangingConfigurations();
|
|
return mDrawableContainerState;
|
|
}
|
|
return null;
|
|
}
|
|
|
|
@Override
|
|
public Drawable mutate() {
|
|
if (!mMutated && super.mutate() == this) {
|
|
final int N = mDrawableContainerState.getChildCount();
|
|
final Drawable[] drawables = mDrawableContainerState.getChildren();
|
|
for (int i = 0; i < N; i++) {
|
|
if (drawables[i] != null) drawables[i].mutate();
|
|
}
|
|
mMutated = true;
|
|
}
|
|
return this;
|
|
}
|
|
|
|
/**
|
|
* A ConstantState that can contain several {@link Drawable}s.
|
|
*
|
|
* This class was made public to enable testing, and its visibility may change in a future
|
|
* release.
|
|
*/
|
|
public abstract static class DrawableContainerState extends ConstantState {
|
|
final DrawableContainer mOwner;
|
|
|
|
int mChangingConfigurations;
|
|
int mChildrenChangingConfigurations;
|
|
|
|
Drawable[] mDrawables;
|
|
int mNumChildren;
|
|
|
|
boolean mVariablePadding = false;
|
|
Rect mConstantPadding = null;
|
|
|
|
boolean mConstantSize = false;
|
|
boolean mComputedConstantSize = false;
|
|
int mConstantWidth;
|
|
int mConstantHeight;
|
|
int mConstantMinimumWidth;
|
|
int mConstantMinimumHeight;
|
|
|
|
int mOpacity;
|
|
|
|
boolean mHaveStateful = false;
|
|
boolean mStateful;
|
|
|
|
boolean mCheckedConstantState;
|
|
boolean mCanConstantState;
|
|
|
|
boolean mPaddingChecked = false;
|
|
|
|
boolean mDither = DEFAULT_DITHER;
|
|
|
|
int mEnterFadeDuration;
|
|
int mExitFadeDuration;
|
|
|
|
DrawableContainerState(DrawableContainerState orig, DrawableContainer owner,
|
|
Resources res) {
|
|
mOwner = owner;
|
|
|
|
if (orig != null) {
|
|
mChangingConfigurations = orig.mChangingConfigurations;
|
|
mChildrenChangingConfigurations = orig.mChildrenChangingConfigurations;
|
|
|
|
final Drawable[] origDr = orig.mDrawables;
|
|
|
|
mDrawables = new Drawable[origDr.length];
|
|
mNumChildren = orig.mNumChildren;
|
|
|
|
final int N = mNumChildren;
|
|
for (int i=0; i<N; i++) {
|
|
if (res != null) {
|
|
mDrawables[i] = origDr[i].getConstantState().newDrawable(res);
|
|
} else {
|
|
mDrawables[i] = origDr[i].getConstantState().newDrawable();
|
|
}
|
|
mDrawables[i].setCallback(owner);
|
|
}
|
|
|
|
mCheckedConstantState = mCanConstantState = true;
|
|
mVariablePadding = orig.mVariablePadding;
|
|
if (orig.mConstantPadding != null) {
|
|
mConstantPadding = new Rect(orig.mConstantPadding);
|
|
}
|
|
mConstantSize = orig.mConstantSize;
|
|
mComputedConstantSize = orig.mComputedConstantSize;
|
|
mConstantWidth = orig.mConstantWidth;
|
|
mConstantHeight = orig.mConstantHeight;
|
|
mConstantMinimumWidth = orig.mConstantMinimumWidth;
|
|
mConstantMinimumHeight = orig.mConstantMinimumHeight;
|
|
|
|
mOpacity = orig.mOpacity;
|
|
mHaveStateful = orig.mHaveStateful;
|
|
mStateful = orig.mStateful;
|
|
|
|
mDither = orig.mDither;
|
|
|
|
mEnterFadeDuration = orig.mEnterFadeDuration;
|
|
mExitFadeDuration = orig.mExitFadeDuration;
|
|
|
|
} else {
|
|
mDrawables = new Drawable[10];
|
|
mNumChildren = 0;
|
|
mCheckedConstantState = mCanConstantState = false;
|
|
}
|
|
}
|
|
|
|
@Override
|
|
public int getChangingConfigurations() {
|
|
return mChangingConfigurations | mChildrenChangingConfigurations;
|
|
}
|
|
|
|
public final int addChild(Drawable dr) {
|
|
final int pos = mNumChildren;
|
|
|
|
if (pos >= mDrawables.length) {
|
|
growArray(pos, pos+10);
|
|
}
|
|
|
|
dr.setVisible(false, true);
|
|
dr.setCallback(mOwner);
|
|
|
|
mDrawables[pos] = dr;
|
|
mNumChildren++;
|
|
mChildrenChangingConfigurations |= dr.getChangingConfigurations();
|
|
mHaveStateful = false;
|
|
|
|
mConstantPadding = null;
|
|
mPaddingChecked = false;
|
|
mComputedConstantSize = false;
|
|
|
|
return pos;
|
|
}
|
|
|
|
public final int getChildCount() {
|
|
return mNumChildren;
|
|
}
|
|
|
|
public final Drawable[] getChildren() {
|
|
return mDrawables;
|
|
}
|
|
|
|
/** A boolean value indicating whether to use the maximum padding value of
|
|
* all frames in the set (false), or to use the padding value of the frame
|
|
* being shown (true). Default value is false.
|
|
*/
|
|
public final void setVariablePadding(boolean variable) {
|
|
mVariablePadding = variable;
|
|
}
|
|
|
|
public final Rect getConstantPadding() {
|
|
if (mVariablePadding) {
|
|
return null;
|
|
}
|
|
if (mConstantPadding != null || mPaddingChecked) {
|
|
return mConstantPadding;
|
|
}
|
|
|
|
Rect r = null;
|
|
final Rect t = new Rect();
|
|
final int N = getChildCount();
|
|
final Drawable[] drawables = mDrawables;
|
|
for (int i = 0; i < N; i++) {
|
|
if (drawables[i].getPadding(t)) {
|
|
if (r == null) r = new Rect(0, 0, 0, 0);
|
|
if (t.left > r.left) r.left = t.left;
|
|
if (t.top > r.top) r.top = t.top;
|
|
if (t.right > r.right) r.right = t.right;
|
|
if (t.bottom > r.bottom) r.bottom = t.bottom;
|
|
}
|
|
}
|
|
mPaddingChecked = true;
|
|
return (mConstantPadding = r);
|
|
}
|
|
|
|
public final void setConstantSize(boolean constant) {
|
|
mConstantSize = constant;
|
|
}
|
|
|
|
public final boolean isConstantSize() {
|
|
return mConstantSize;
|
|
}
|
|
|
|
public final int getConstantWidth() {
|
|
if (!mComputedConstantSize) {
|
|
computeConstantSize();
|
|
}
|
|
|
|
return mConstantWidth;
|
|
}
|
|
|
|
public final int getConstantHeight() {
|
|
if (!mComputedConstantSize) {
|
|
computeConstantSize();
|
|
}
|
|
|
|
return mConstantHeight;
|
|
}
|
|
|
|
public final int getConstantMinimumWidth() {
|
|
if (!mComputedConstantSize) {
|
|
computeConstantSize();
|
|
}
|
|
|
|
return mConstantMinimumWidth;
|
|
}
|
|
|
|
public final int getConstantMinimumHeight() {
|
|
if (!mComputedConstantSize) {
|
|
computeConstantSize();
|
|
}
|
|
|
|
return mConstantMinimumHeight;
|
|
}
|
|
|
|
protected void computeConstantSize() {
|
|
mComputedConstantSize = true;
|
|
|
|
final int N = getChildCount();
|
|
final Drawable[] drawables = mDrawables;
|
|
mConstantWidth = mConstantHeight = -1;
|
|
mConstantMinimumWidth = mConstantMinimumHeight = 0;
|
|
for (int i = 0; i < N; i++) {
|
|
Drawable dr = drawables[i];
|
|
int s = dr.getIntrinsicWidth();
|
|
if (s > mConstantWidth) mConstantWidth = s;
|
|
s = dr.getIntrinsicHeight();
|
|
if (s > mConstantHeight) mConstantHeight = s;
|
|
s = dr.getMinimumWidth();
|
|
if (s > mConstantMinimumWidth) mConstantMinimumWidth = s;
|
|
s = dr.getMinimumHeight();
|
|
if (s > mConstantMinimumHeight) mConstantMinimumHeight = s;
|
|
}
|
|
}
|
|
|
|
public final void setEnterFadeDuration(int duration) {
|
|
mEnterFadeDuration = duration;
|
|
}
|
|
|
|
public final int getEnterFadeDuration() {
|
|
return mEnterFadeDuration;
|
|
}
|
|
|
|
public final void setExitFadeDuration(int duration) {
|
|
mExitFadeDuration = duration;
|
|
}
|
|
|
|
public final int getExitFadeDuration() {
|
|
return mExitFadeDuration;
|
|
}
|
|
|
|
public final int getOpacity() {
|
|
final int N = getChildCount();
|
|
final Drawable[] drawables = mDrawables;
|
|
int op = N > 0 ? drawables[0].getOpacity() : PixelFormat.TRANSPARENT;
|
|
for (int i = 1; i < N; i++) {
|
|
op = Drawable.resolveOpacity(op, drawables[i].getOpacity());
|
|
}
|
|
mOpacity = op;
|
|
return op;
|
|
}
|
|
|
|
public final boolean isStateful() {
|
|
if (mHaveStateful) {
|
|
return mStateful;
|
|
}
|
|
|
|
boolean stateful = false;
|
|
final int N = getChildCount();
|
|
for (int i = 0; i < N; i++) {
|
|
if (mDrawables[i].isStateful()) {
|
|
stateful = true;
|
|
break;
|
|
}
|
|
}
|
|
|
|
mStateful = stateful;
|
|
mHaveStateful = true;
|
|
return stateful;
|
|
}
|
|
|
|
public void growArray(int oldSize, int newSize) {
|
|
Drawable[] newDrawables = new Drawable[newSize];
|
|
System.arraycopy(mDrawables, 0, newDrawables, 0, oldSize);
|
|
mDrawables = newDrawables;
|
|
}
|
|
|
|
public synchronized boolean canConstantState() {
|
|
if (!mCheckedConstantState) {
|
|
mCanConstantState = true;
|
|
final int N = mNumChildren;
|
|
for (int i=0; i<N; i++) {
|
|
if (mDrawables[i].getConstantState() == null) {
|
|
mCanConstantState = false;
|
|
break;
|
|
}
|
|
}
|
|
mCheckedConstantState = true;
|
|
}
|
|
|
|
return mCanConstantState;
|
|
}
|
|
}
|
|
|
|
protected void setConstantState(DrawableContainerState state)
|
|
{
|
|
mDrawableContainerState = state;
|
|
}
|
|
}
|