| /* |
| * 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 android.transition; |
| |
| import android.content.res.Resources; |
| import android.graphics.Canvas; |
| import android.graphics.ColorFilter; |
| import android.graphics.Matrix; |
| import android.graphics.Rect; |
| import android.graphics.drawable.Drawable; |
| import android.util.Property; |
| |
| /** |
| * Used in MoveImage to mock an ImageView as a Drawable to be scaled in the scene root Overlay. |
| * @hide |
| */ |
| class MatrixClippedDrawable extends Drawable implements Drawable.Callback { |
| private static final String TAG = "MatrixClippedDrawable"; |
| |
| private ClippedMatrixState mClippedMatrixState; |
| |
| public static final Property<MatrixClippedDrawable, Rect> CLIP_PROPERTY |
| = new Property<MatrixClippedDrawable, Rect>(Rect.class, "clipRect") { |
| |
| @Override |
| public Rect get(MatrixClippedDrawable object) { |
| return object.getClipRect(); |
| } |
| |
| @Override |
| public void set(MatrixClippedDrawable object, Rect value) { |
| object.setClipRect(value); |
| } |
| }; |
| |
| public static final Property<MatrixClippedDrawable, Matrix> MATRIX_PROPERTY |
| = new Property<MatrixClippedDrawable, Matrix>(Matrix.class, "matrix") { |
| @Override |
| public void set(MatrixClippedDrawable object, Matrix value) { |
| object.setMatrix(value); |
| } |
| |
| @Override |
| public Matrix get(MatrixClippedDrawable object) { |
| return object.getMatrix(); |
| } |
| }; |
| |
| public MatrixClippedDrawable(Drawable drawable) { |
| this(null, null); |
| |
| mClippedMatrixState.mDrawable = drawable; |
| |
| if (drawable != null) { |
| drawable.setCallback(this); |
| } |
| } |
| |
| public void setMatrix(Matrix matrix) { |
| if (matrix == null) { |
| mClippedMatrixState.mMatrix = null; |
| } else { |
| if (mClippedMatrixState.mMatrix == null) { |
| mClippedMatrixState.mMatrix = new Matrix(); |
| } |
| mClippedMatrixState.mMatrix.set(matrix); |
| } |
| invalidateSelf(); |
| } |
| |
| public Matrix getMatrix() { |
| return mClippedMatrixState.mMatrix; |
| } |
| |
| public Rect getClipRect() { |
| return mClippedMatrixState.mClipRect; |
| } |
| |
| public void setClipRect(Rect clipRect) { |
| if (clipRect == null) { |
| if (mClippedMatrixState.mClipRect != null) { |
| mClippedMatrixState.mClipRect = null; |
| invalidateSelf(); |
| } |
| } else { |
| if (mClippedMatrixState.mClipRect == null) { |
| mClippedMatrixState.mClipRect = new Rect(clipRect); |
| } else { |
| mClippedMatrixState.mClipRect.set(clipRect); |
| } |
| invalidateSelf(); |
| } |
| } |
| |
| // overrides from Drawable.Callback |
| |
| public void invalidateDrawable(Drawable who) { |
| final Drawable.Callback callback = getCallback(); |
| if (callback != null) { |
| callback.invalidateDrawable(this); |
| } |
| } |
| |
| public void scheduleDrawable(Drawable who, Runnable what, long when) { |
| final Drawable.Callback callback = getCallback(); |
| if (callback != null) { |
| callback.scheduleDrawable(this, what, when); |
| } |
| } |
| |
| public void unscheduleDrawable(Drawable who, Runnable what) { |
| final Drawable.Callback callback = getCallback(); |
| if (callback != null) { |
| callback.unscheduleDrawable(this, what); |
| } |
| } |
| |
| // overrides from Drawable |
| |
| @Override |
| public int getChangingConfigurations() { |
| return super.getChangingConfigurations() |
| | mClippedMatrixState.mChangingConfigurations |
| | mClippedMatrixState.mDrawable.getChangingConfigurations(); |
| } |
| |
| @Override |
| public boolean getPadding(Rect padding) { |
| // XXX need to adjust padding! |
| return mClippedMatrixState.mDrawable.getPadding(padding); |
| } |
| |
| @Override |
| public boolean setVisible(boolean visible, boolean restart) { |
| mClippedMatrixState.mDrawable.setVisible(visible, restart); |
| return super.setVisible(visible, restart); |
| } |
| |
| @Override |
| public void setAlpha(int alpha) { |
| mClippedMatrixState.mDrawable.setAlpha(alpha); |
| } |
| |
| @Override |
| public int getAlpha() { |
| return mClippedMatrixState.mDrawable.getAlpha(); |
| } |
| |
| @Override |
| public void setColorFilter(ColorFilter cf) { |
| mClippedMatrixState.mDrawable.setColorFilter(cf); |
| } |
| |
| @Override |
| public int getOpacity() { |
| return mClippedMatrixState.mDrawable.getOpacity(); |
| } |
| |
| @Override |
| public boolean isStateful() { |
| return mClippedMatrixState.mDrawable.isStateful(); |
| } |
| |
| @Override |
| protected boolean onStateChange(int[] state) { |
| return mClippedMatrixState.mDrawable.setState(state); |
| } |
| |
| @Override |
| protected boolean onLevelChange(int level) { |
| mClippedMatrixState.mDrawable.setLevel(level); |
| invalidateSelf(); |
| return true; |
| } |
| |
| @Override |
| protected void onBoundsChange(Rect bounds) { |
| super.setBounds(bounds); |
| if (mClippedMatrixState.mMatrix == null) { |
| mClippedMatrixState.mDrawable.setBounds(bounds); |
| } else { |
| int drawableWidth = mClippedMatrixState.mDrawable.getIntrinsicWidth(); |
| int drawableHeight = mClippedMatrixState.mDrawable.getIntrinsicHeight(); |
| mClippedMatrixState.mDrawable.setBounds(bounds.left, bounds.top, |
| drawableWidth + bounds.left, drawableHeight + bounds.top); |
| } |
| invalidateSelf(); |
| } |
| |
| @Override |
| public void draw(Canvas canvas) { |
| Rect bounds = getBounds(); |
| int left = bounds.left; |
| int top = bounds.top; |
| int saveCount = canvas.getSaveCount(); |
| canvas.save(); |
| if (mClippedMatrixState.mClipRect != null) { |
| canvas.clipRect(mClippedMatrixState.mClipRect); |
| } else { |
| canvas.clipRect(bounds); |
| } |
| |
| if (mClippedMatrixState != null && !mClippedMatrixState.mMatrix.isIdentity()) { |
| canvas.translate(left, top); |
| canvas.concat(mClippedMatrixState.mMatrix); |
| canvas.translate(-left, -top); |
| } |
| mClippedMatrixState.mDrawable.draw(canvas); |
| canvas.restoreToCount(saveCount); |
| } |
| |
| @Override |
| public int getIntrinsicWidth() { |
| return mClippedMatrixState.mDrawable.getIntrinsicWidth(); |
| } |
| |
| @Override |
| public int getIntrinsicHeight() { |
| return mClippedMatrixState.mDrawable.getIntrinsicHeight(); |
| } |
| |
| @Override |
| public Drawable.ConstantState getConstantState() { |
| if (mClippedMatrixState.canConstantState()) { |
| mClippedMatrixState.mChangingConfigurations = getChangingConfigurations(); |
| return mClippedMatrixState; |
| } |
| return null; |
| } |
| |
| final static class ClippedMatrixState extends Drawable.ConstantState { |
| Drawable mDrawable; |
| Matrix mMatrix; |
| Rect mClipRect; |
| |
| private boolean mCheckedConstantState; |
| private boolean mCanConstantState; |
| int mChangingConfigurations; |
| |
| ClippedMatrixState(ClippedMatrixState orig, MatrixClippedDrawable owner, Resources res) { |
| if (orig != null) { |
| if (res != null) { |
| mDrawable = orig.mDrawable.getConstantState().newDrawable(res); |
| } else { |
| mDrawable = orig.mDrawable.getConstantState().newDrawable(); |
| } |
| mDrawable.setCallback(owner); |
| mCheckedConstantState = mCanConstantState = true; |
| if (orig.mMatrix != null) { |
| mMatrix = new Matrix(orig.mMatrix); |
| } |
| if (orig.mClipRect != null) { |
| mClipRect = new Rect(orig.mClipRect); |
| } |
| } |
| } |
| |
| @Override |
| public Drawable newDrawable() { |
| return new MatrixClippedDrawable(this, null); |
| } |
| |
| @Override |
| public Drawable newDrawable(Resources res) { |
| return new MatrixClippedDrawable(this, res); |
| } |
| |
| @Override |
| public int getChangingConfigurations() { |
| return mChangingConfigurations; |
| } |
| |
| boolean canConstantState() { |
| if (!mCheckedConstantState) { |
| mCanConstantState = mDrawable.getConstantState() != null; |
| mCheckedConstantState = true; |
| } |
| |
| return mCanConstantState; |
| } |
| } |
| |
| private MatrixClippedDrawable(ClippedMatrixState state, Resources res) { |
| mClippedMatrixState = new ClippedMatrixState(state, this, res); |
| } |
| |
| } |