Allow null layers in LayerDrawable (7a583e7b) · Commits · e / os / android_frameworks_base

graphics/java/android/graphics/drawable/LayerDrawable.java

+166 −61

Original line number	Diff line number	Diff line
		@@ -297,7 +297,7 @@ public class LayerDrawable extends Drawable implements Drawable.Callback {
		}

		final Drawable d = layer.mDrawable;
		if (d.canApplyTheme()) {
		if (d != null && d.canApplyTheme()) {
		d.applyTheme(t);

		// Update cached mask of child changing configurations.
		@@ -881,7 +881,10 @@ public class LayerDrawable extends Drawable implements Drawable.Callback {
		final ChildDrawable[] array = mLayerState.mChildren;
		final int N = mLayerState.mNum;
		for (int i = 0; i < N; i++) {
		array[i].mDrawable.draw(canvas);
		final Drawable dr = array[i].mDrawable;
		if (dr != null) {
		dr.draw(canvas);
		}
		}
		}

		@@ -946,23 +949,28 @@ public class LayerDrawable extends Drawable implements Drawable.Callback {
		*/
		@Override
		public void getOutline(@NonNull Outline outline) {
		final LayerState state = mLayerState;
		final ChildDrawable[] children = state.mChildren;
		final int N = state.mNum;
		final ChildDrawable[] array = mLayerState.mChildren;
		final int N = mLayerState.mNum;
		for (int i = 0; i < N; i++) {
		children[i].mDrawable.getOutline(outline);
		final Drawable dr = array[i].mDrawable;
		if (dr != null) {
		dr.getOutline(outline);
		if (!outline.isEmpty()) {
		return;
		}
		}
		}
		}

		@Override
		public void setHotspot(float x, float y) {
		final ChildDrawable[] array = mLayerState.mChildren;
		final int N = mLayerState.mNum;
		for (int i = 0; i < N; i++) {
		array[i].mDrawable.setHotspot(x, y);
		final Drawable dr = array[i].mDrawable;
		if (dr != null) {
		dr.setHotspot(x, y);
		}
		}
		}

		@@ -971,7 +979,10 @@ public class LayerDrawable extends Drawable implements Drawable.Callback {
		final ChildDrawable[] array = mLayerState.mChildren;
		final int N = mLayerState.mNum;
		for (int i = 0; i < N; i++) {
		array[i].mDrawable.setHotspotBounds(left, top, right, bottom);
		final Drawable dr = array[i].mDrawable;
		if (dr != null) {
		dr.setHotspotBounds(left, top, right, bottom);
		}
		}

		if (mHotspotBounds == null) {
		@@ -996,7 +1007,10 @@ public class LayerDrawable extends Drawable implements Drawable.Callback {
		final ChildDrawable[] array = mLayerState.mChildren;
		final int N = mLayerState.mNum;
		for (int i = 0; i < N; i++) {
		array[i].mDrawable.setVisible(visible, restart);
		final Drawable dr = array[i].mDrawable;
		if (dr != null) {
		dr.setVisible(visible, restart);
		}
		}

		return changed;
		@@ -1007,17 +1021,18 @@ public class LayerDrawable extends Drawable implements Drawable.Callback {
		final ChildDrawable[] array = mLayerState.mChildren;
		final int N = mLayerState.mNum;
		for (int i = 0; i < N; i++) {
		array[i].mDrawable.setDither(dither);
		final Drawable dr = array[i].mDrawable;
		if (dr != null) {
		dr.setDither(dither);
		}
		}
		}

		@Override
		public boolean getDither() {
		final ChildDrawable[] array = mLayerState.mChildren;
		if (mLayerState.mNum > 0) {
		// All layers should have the same dither set on them - just return
		// the first one
		return array[0].mDrawable.getDither();
		final Drawable dr = getFirstNonNullDrawable();
		if (dr != null) {
		return dr.getDither();
		} else {
		return super.getDither();
		}
		@@ -1028,17 +1043,18 @@ public class LayerDrawable extends Drawable implements Drawable.Callback {
		final ChildDrawable[] array = mLayerState.mChildren;
		final int N = mLayerState.mNum;
		for (int i = 0; i < N; i++) {
		array[i].mDrawable.setAlpha(alpha);
		final Drawable dr = array[i].mDrawable;
		if (dr != null) {
		dr.setAlpha(alpha);
		}
		}
		}

		@Override
		public int getAlpha() {
		final ChildDrawable[] array = mLayerState.mChildren;
		if (mLayerState.mNum > 0) {
		// All layers should have the same alpha set on them - just return
		// the first one
		return array[0].mDrawable.getAlpha();
		final Drawable dr = getFirstNonNullDrawable();
		if (dr != null) {
		return dr.getAlpha();
		} else {
		return super.getAlpha();
		}
		@@ -1049,7 +1065,10 @@ public class LayerDrawable extends Drawable implements Drawable.Callback {
		final ChildDrawable[] array = mLayerState.mChildren;
		final int N = mLayerState.mNum;
		for (int i = 0; i < N; i++) {
		array[i].mDrawable.setColorFilter(colorFilter);
		final Drawable dr = array[i].mDrawable;
		if (dr != null) {
		dr.setColorFilter(colorFilter);
		}
		}
		}

		@@ -1058,7 +1077,10 @@ public class LayerDrawable extends Drawable implements Drawable.Callback {
		final ChildDrawable[] array = mLayerState.mChildren;
		final int N = mLayerState.mNum;
		for (int i = 0; i < N; i++) {
		array[i].mDrawable.setTintList(tint);
		final Drawable dr = array[i].mDrawable;
		if (dr != null) {
		dr.setTintList(tint);
		}
		}
		}

		@@ -1067,10 +1089,25 @@ public class LayerDrawable extends Drawable implements Drawable.Callback {
		final ChildDrawable[] array = mLayerState.mChildren;
		final int N = mLayerState.mNum;
		for (int i = 0; i < N; i++) {
		array[i].mDrawable.setTintMode(tintMode);
		final Drawable dr = array[i].mDrawable;
		if (dr != null) {
		dr.setTintMode(tintMode);
		}
		}
		}

		private Drawable getFirstNonNullDrawable() {
		final ChildDrawable[] array = mLayerState.mChildren;
		final int N = mLayerState.mNum;
		for (int i = 0; i < N; i++) {
		final Drawable dr = array[i].mDrawable;
		if (dr != null) {
		return dr;
		}
		}
		return null;
		}

		/**
		* Sets the opacity of this drawable directly, instead of collecting the
		* states from the layers
		@@ -1101,7 +1138,10 @@ public class LayerDrawable extends Drawable implements Drawable.Callback {
		final ChildDrawable[] array = mLayerState.mChildren;
		final int N = mLayerState.mNum;
		for (int i = 0; i < N; i++) {
		array[i].mDrawable.setAutoMirrored(mirrored);
		final Drawable dr = array[i].mDrawable;
		if (dr != null) {
		dr.setAutoMirrored(mirrored);
		}
		}
		}

		@@ -1122,9 +1162,9 @@ public class LayerDrawable extends Drawable implements Drawable.Callback {
		final ChildDrawable[] array = mLayerState.mChildren;
		final int N = mLayerState.mNum;
		for (int i = 0; i < N; i++) {
		final ChildDrawable r = array[i];
		if (r.mDrawable.isStateful() && r.mDrawable.setState(state)) {
		refreshChildPadding(i, r);
		final Drawable dr = array[i].mDrawable;
		if (dr != null && dr.isStateful() && dr.setState(state)) {
		refreshChildPadding(i, array[i]);
		changed = true;
		}
		}
		@@ -1143,9 +1183,9 @@ public class LayerDrawable extends Drawable implements Drawable.Callback {
		final ChildDrawable[] array = mLayerState.mChildren;
		final int N = mLayerState.mNum;
		for (int i = 0; i < N; i++) {
		final ChildDrawable r = array[i];
		if (r.mDrawable.setLevel(level)) {
		refreshChildPadding(i, r);
		final Drawable dr = array[i].mDrawable;
		if (dr != null && dr.setLevel(level)) {
		refreshChildPadding(i, array[i]);
		changed = true;
		}
		}
		@@ -1176,6 +1216,10 @@ public class LayerDrawable extends Drawable implements Drawable.Callback {
		for (int i = 0; i < N; i++) {
		final ChildDrawable r = array[i];
		final Drawable d = r.mDrawable;
		if (d == null) {
		continue;
		}

		final Rect container = mTmpContainer;
		container.set(d.getBounds());

		@@ -1257,6 +1301,10 @@ public class LayerDrawable extends Drawable implements Drawable.Callback {
		final int N = mLayerState.mNum;
		for (int i = 0; i < N; i++) {
		final ChildDrawable r = array[i];
		if (r.mDrawable == null) {
		continue;
		}

		final int minWidth = r.mWidth < 0 ? r.mDrawable.getIntrinsicWidth() : r.mWidth;
		final int w = minWidth + r.mInsetL + r.mInsetR + padL + padR;
		if (w > width) {
		@@ -1283,6 +1331,10 @@ public class LayerDrawable extends Drawable implements Drawable.Callback {
		final int N = mLayerState.mNum;
		for (int i = 0; i < N; i++) {
		final ChildDrawable r = array[i];
		if (r.mDrawable == null) {
		continue;
		}

		final int minHeight = r.mHeight < 0 ? r.mDrawable.getIntrinsicHeight() : r.mHeight;
		final int h = minHeight + r.mInsetT + r.mInsetB + padT + padB;
		if (h > height) {
		@@ -1304,6 +1356,7 @@ public class LayerDrawable extends Drawable implements Drawable.Callback {
		* @return true if the child's padding has changed
		*/
		private boolean refreshChildPadding(int i, ChildDrawable r) {
		if (r.mDrawable != null) {
		final Rect rect = mTmpRect;
		r.mDrawable.getPadding(rect);
		if (rect.left != mPaddingL[i] \|\| rect.top != mPaddingT[i] \|\|
		@@ -1314,6 +1367,7 @@ public class LayerDrawable extends Drawable implements Drawable.Callback {
		mPaddingB[i] = rect.bottom;
		return true;
		}
		}
		return false;
		}

		@@ -1348,7 +1402,10 @@ public class LayerDrawable extends Drawable implements Drawable.Callback {
		final ChildDrawable[] array = mLayerState.mChildren;
		final int N = mLayerState.mNum;
		for (int i = 0; i < N; i++) {
		array[i].mDrawable.mutate();
		final Drawable dr = array[i].mDrawable;
		if (dr != null) {
		dr.mutate();
		}
		}
		mMutated = true;
		}
		@@ -1360,10 +1417,14 @@ public class LayerDrawable extends Drawable implements Drawable.Callback {
		*/
		public void clearMutated() {
		super.clearMutated();

		final ChildDrawable[] array = mLayerState.mChildren;
		final int N = mLayerState.mNum;
		for (int i = 0; i < N; i++) {
		array[i].mDrawable.clearMutated();
		final Drawable dr = array[i].mDrawable;
		if (dr != null) {
		dr.clearMutated();
		}
		}
		mMutated = false;
		}
		@@ -1371,11 +1432,16 @@ public class LayerDrawable extends Drawable implements Drawable.Callback {
		@Override
		public boolean onLayoutDirectionChange(int layoutDirection) {
		boolean changed = false;

		final ChildDrawable[] array = mLayerState.mChildren;
		final int N = mLayerState.mNum;
		for (int i = 0; i < N; i++) {
		changed \|= array[i].mDrawable.setLayoutDirection(layoutDirection);
		final Drawable dr = array[i].mDrawable;
		if (dr != null) {
		changed \|= dr.setLayoutDirection(layoutDirection);
		}
		}

		updateLayerBounds(getBounds());
		return changed;
		}
		@@ -1396,15 +1462,24 @@ public class LayerDrawable extends Drawable implements Drawable.Callback {
		}

		ChildDrawable(ChildDrawable orig, LayerDrawable owner, Resources res) {
		final Drawable dr = orig.mDrawable;
		final Drawable clone;
		if (dr != null) {
		final ConstantState cs = dr.getConstantState();
		if (res != null) {
		mDrawable = orig.mDrawable.getConstantState().newDrawable(res);
		clone = cs.newDrawable(res);
		} else {
		clone = cs.newDrawable();
		}
		clone.setCallback(owner);
		clone.setLayoutDirection(dr.getLayoutDirection());
		clone.setBounds(dr.getBounds());
		clone.setLevel(dr.getLevel());
		} else {
		mDrawable = orig.mDrawable.getConstantState().newDrawable();
		clone = null;
		}
		mDrawable.setCallback(owner);
		mDrawable.setLayoutDirection(orig.mDrawable.getLayoutDirection());
		mDrawable.setBounds(orig.mDrawable.getBounds());
		mDrawable.setLevel(orig.mDrawable.getLevel());

		mDrawable = clone;
		mThemeAttrs = orig.mThemeAttrs;
		mInsetL = orig.mInsetL;
		mInsetT = orig.mInsetT;
		@@ -1417,6 +1492,11 @@ public class LayerDrawable extends Drawable implements Drawable.Callback {
		mGravity = orig.mGravity;
		mId = orig.mId;
		}

		public boolean canApplyTheme() {
		return mThemeAttrs != null
		\|\| (mDrawable != null && mDrawable.canApplyTheme());
		}
		}

		static class LayerState extends ConstantState {
		@@ -1476,7 +1556,7 @@ public class LayerDrawable extends Drawable implements Drawable.Callback {
		final int N = mNum;
		for (int i = 0; i < N; i++) {
		final ChildDrawable layer = array[i];
		if (layer.mThemeAttrs != null \|\| layer.mDrawable.canApplyTheme()) {
		if (layer.canApplyTheme()) {
		return true;
		}
		}
		@@ -1507,9 +1587,29 @@ public class LayerDrawable extends Drawable implements Drawable.Callback {

		final ChildDrawable[] array = mChildren;
		final int N = mNum;
		int op = N > 0 ? array[0].mDrawable.getOpacity() : PixelFormat.TRANSPARENT;
		for (int i = 1; i < N; i++) {
		op = Drawable.resolveOpacity(op, array[i].mDrawable.getOpacity());

		// Seek to the first non-null drawable.
		int firstIndex = -1;
		for (int i = 0; i < N; i++) {
		if (array[i].mDrawable != null) {
		firstIndex = i;
		break;
		}
		}

		int op;
		if (firstIndex >= 0) {
		op = array[firstIndex].mDrawable.getOpacity();
		} else {
		op = PixelFormat.TRANSPARENT;
		}

		// Merge all remaining non-null drawables.
		for (int i = firstIndex + 1; i < N; i++) {
		final Drawable dr = array[i].mDrawable;
		if (dr != null) {
		op = Drawable.resolveOpacity(op, dr.getOpacity());
		}
		}

		mOpacity = op;
		@@ -1526,7 +1626,8 @@ public class LayerDrawable extends Drawable implements Drawable.Callback {
		final int N = mNum;
		boolean isStateful = false;
		for (int i = 0; i < N; i++) {
		if (array[i].mDrawable.isStateful()) {
		final Drawable dr = array[i].mDrawable;
		if (dr != null && dr.isStateful()) {
		isStateful = true;
		break;
		}
		@@ -1541,7 +1642,8 @@ public class LayerDrawable extends Drawable implements Drawable.Callback {
		final ChildDrawable[] array = mChildren;
		final int N = mNum;
		for (int i = 0; i < N; i++) {
		if (array[i].mDrawable.getConstantState() == null) {
		final Drawable dr = array[i].mDrawable;
		if (dr != null && dr.getConstantState() == null) {
		return false;
		}
		}
		@@ -1561,11 +1663,14 @@ public class LayerDrawable extends Drawable implements Drawable.Callback {
		final int N = mNum;
		int pixelCount = 0;
		for (int i = 0; i < N; i++) {
		final ConstantState state = array[i].mDrawable.getConstantState();
		final Drawable dr = array[i].mDrawable;
		if (dr != null) {
		final ConstantState state = dr.getConstantState();
		if (state != null) {
		pixelCount += state.addAtlasableBitmaps(atlasList);
		}
		}
		}
		return pixelCount;
		}
		}