Update spinner's drawables. Clean up resources, pave the way for new animation.
This commit is contained in:
Romain Guy
@@ -0,0 +1,315 @@
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/*
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* Copyright (C) 2009 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package android.graphics.drawable;
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import android.graphics.Canvas;
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import android.graphics.Rect;
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import android.graphics.ColorFilter;
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import android.content.res.Resources;
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import android.content.res.TypedArray;
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import android.util.AttributeSet;
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import android.util.TypedValue;
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import android.util.Log;
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import android.os.SystemClock;
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import org.xmlpull.v1.XmlPullParser;
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import org.xmlpull.v1.XmlPullParserException;
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import java.io.IOException;
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import com.android.internal.R;
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/**
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* @hide
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*/
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public class AnimatedRotateDrawable extends Drawable implements Drawable.Callback, Runnable {
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private AnimatedRotateState mState;
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private boolean mMutated;
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private float mCurrentDegrees;
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private float mIncrement;
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public AnimatedRotateDrawable() {
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this(null);
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}
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private AnimatedRotateDrawable(AnimatedRotateState rotateState) {
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mState = new AnimatedRotateState(rotateState, this);
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init();
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}
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private void init() {
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final AnimatedRotateState state = mState;
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mIncrement = 360.0f / (float) state.mFramesCount;
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final Drawable drawable = state.mDrawable;
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if (drawable != null) {
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drawable.setFilterBitmap(true);
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if (drawable instanceof BitmapDrawable) {
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((BitmapDrawable) drawable).setAntiAlias(true);
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}
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}
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}
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public void draw(Canvas canvas) {
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int saveCount = canvas.save();
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final AnimatedRotateState st = mState;
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final Drawable drawable = st.mDrawable;
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final Rect bounds = drawable.getBounds();
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int w = bounds.right - bounds.left;
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int h = bounds.bottom - bounds.top;
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float px = st.mPivotXRel ? (w * st.mPivotX) : st.mPivotX;
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float py = st.mPivotYRel ? (h * st.mPivotY) : st.mPivotY;
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canvas.rotate(mCurrentDegrees, px, py);
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drawable.draw(canvas);
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canvas.restoreToCount(saveCount);
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nextFrame();
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}
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private void nextFrame() {
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unscheduleSelf(this);
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scheduleSelf(this, SystemClock.uptimeMillis() + mState.mFrameDuration);
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}
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public void run() {
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// TODO: This should be computed in draw(Canvas), based on the amount
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// of time since the last frame drawn
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mCurrentDegrees += mIncrement;
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if (mCurrentDegrees > (360.0f - mIncrement)) {
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mCurrentDegrees = 0.0f;
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}
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nextFrame();
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invalidateSelf();
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}
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@Override
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public boolean setVisible(boolean visible, boolean restart) {
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mState.mDrawable.setVisible(visible, restart);
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boolean changed = super.setVisible(visible, restart);
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if (visible) {
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if (changed || restart) {
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mCurrentDegrees = 0.0f;
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nextFrame();
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}
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} else {
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unscheduleSelf(this);
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}
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return changed;
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}
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/**
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* Returns the drawable rotated by this RotateDrawable.
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*/
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public Drawable getDrawable() {
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return mState.mDrawable;
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}
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@Override
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public int getChangingConfigurations() {
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return super.getChangingConfigurations()
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| mState.mChangingConfigurations
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| mState.mDrawable.getChangingConfigurations();
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}
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public void setAlpha(int alpha) {
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mState.mDrawable.setAlpha(alpha);
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}
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public void setColorFilter(ColorFilter cf) {
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mState.mDrawable.setColorFilter(cf);
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}
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public int getOpacity() {
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return mState.mDrawable.getOpacity();
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}
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public void invalidateDrawable(Drawable who) {
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if (mCallback != null) {
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mCallback.invalidateDrawable(this);
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}
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}
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public void scheduleDrawable(Drawable who, Runnable what, long when) {
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if (mCallback != null) {
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mCallback.scheduleDrawable(this, what, when);
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}
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}
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public void unscheduleDrawable(Drawable who, Runnable what) {
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if (mCallback != null) {
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mCallback.unscheduleDrawable(this, what);
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}
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}
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@Override
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public boolean getPadding(Rect padding) {
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return mState.mDrawable.getPadding(padding);
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}
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@Override
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public boolean isStateful() {
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return mState.mDrawable.isStateful();
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}
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@Override
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protected void onBoundsChange(Rect bounds) {
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mState.mDrawable.setBounds(bounds.left, bounds.top, bounds.right, bounds.bottom);
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}
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@Override
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public int getIntrinsicWidth() {
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return mState.mDrawable.getIntrinsicWidth();
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}
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@Override
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public int getIntrinsicHeight() {
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return mState.mDrawable.getIntrinsicHeight();
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}
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@Override
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public ConstantState getConstantState() {
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if (mState.canConstantState()) {
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mState.mChangingConfigurations = super.getChangingConfigurations();
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return mState;
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}
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return null;
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}
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@Override
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public void inflate(Resources r, XmlPullParser parser, AttributeSet attrs)
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throws XmlPullParserException, IOException {
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final TypedArray a = r.obtainAttributes(attrs, R.styleable.AnimatedRotateDrawable);
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super.inflateWithAttributes(r, parser, a, R.styleable.AnimatedRotateDrawable_visible);
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TypedValue tv = a.peekValue(R.styleable.AnimatedRotateDrawable_pivotX);
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final boolean pivotXRel = tv.type == TypedValue.TYPE_FRACTION;
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final float pivotX = pivotXRel ? tv.getFraction(1.0f, 1.0f) : tv.getFloat();
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tv = a.peekValue(R.styleable.AnimatedRotateDrawable_pivotY);
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final boolean pivotYRel = tv.type == TypedValue.TYPE_FRACTION;
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final float pivotY = pivotYRel ? tv.getFraction(1.0f, 1.0f) : tv.getFloat();
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final int framesCount = a.getInt(R.styleable.AnimatedRotateDrawable_framesCount, 12);
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final int frameDuration = a.getInt(R.styleable.AnimatedRotateDrawable_frameDuration, 150);
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final int res = a.getResourceId(R.styleable.AnimatedRotateDrawable_drawable, 0);
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Drawable drawable = null;
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if (res > 0) {
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drawable = r.getDrawable(res);
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}
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a.recycle();
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int outerDepth = parser.getDepth();
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int type;
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while ((type = parser.next()) != XmlPullParser.END_DOCUMENT &&
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(type != XmlPullParser.END_TAG || parser.getDepth() > outerDepth)) {
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if (type != XmlPullParser.START_TAG) {
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continue;
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}
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if ((drawable = Drawable.createFromXmlInner(r, parser, attrs)) == null) {
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Log.w("drawable", "Bad element under <animated-rotate>: "
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+ parser .getName());
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}
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}
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if (drawable == null) {
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Log.w("drawable", "No drawable specified for <animated-rotate>");
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}
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final AnimatedRotateState rotateState = mState;
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rotateState.mDrawable = drawable;
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rotateState.mPivotXRel = pivotXRel;
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rotateState.mPivotX = pivotX;
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rotateState.mPivotYRel = pivotYRel;
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rotateState.mPivotY = pivotY;
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rotateState.mFramesCount = framesCount;
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rotateState.mFrameDuration = frameDuration;
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init();
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if (drawable != null) {
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drawable.setCallback(this);
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}
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}
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@Override
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public Drawable mutate() {
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if (!mMutated && super.mutate() == this) {
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mState.mDrawable.mutate();
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mMutated = true;
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}
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return this;
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}
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final static class AnimatedRotateState extends Drawable.ConstantState {
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Drawable mDrawable;
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int mChangingConfigurations;
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boolean mPivotXRel;
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float mPivotX;
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boolean mPivotYRel;
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float mPivotY;
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int mFrameDuration;
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int mFramesCount;
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private boolean mCanConstantState;
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private boolean mCheckedConstantState;
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public AnimatedRotateState(AnimatedRotateState source, AnimatedRotateDrawable owner) {
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if (source != null) {
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mDrawable = source.mDrawable.getConstantState().newDrawable();
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mDrawable.setCallback(owner);
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mPivotXRel = source.mPivotXRel;
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mPivotX = source.mPivotX;
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mPivotYRel = source.mPivotYRel;
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mPivotY = source.mPivotY;
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mFramesCount = source.mFramesCount;
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mFrameDuration = source.mFrameDuration;
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mCanConstantState = mCheckedConstantState = true;
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}
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}
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@Override
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public Drawable newDrawable() {
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return new AnimatedRotateDrawable(this);
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}
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@Override
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public int getChangingConfigurations() {
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return mChangingConfigurations;
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}
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public boolean canConstantState() {
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if (!mCheckedConstantState) {
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mCanConstantState = mDrawable.getConstantState() != null;
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mCheckedConstantState = true;
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}
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return mCanConstantState;
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}
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}
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}
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