531db61ac1
variants Updated various framework Views to have equivalent BlendMode APIs to replace the deprecated PorterDuff equivalents. Updated InspectableProperty annotations to refer to the same xml attributes as the original tintmode APIs Bug: 126726419 Test: Added CTS tests to verify new BlendMode APIs Change-Id: Id9ab36d3d4d29f351250723e9d13d49bc6062c83 Merged-In: Id9ab36d3d4d29f351250723e9d13d49bc6062c83
655 lines
20 KiB
Java
655 lines
20 KiB
Java
/*
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* Copyright (C) 2007 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.annotation.NonNull;
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import android.annotation.Nullable;
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import android.annotation.TestApi;
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import android.content.pm.ActivityInfo.Config;
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import android.content.res.ColorStateList;
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import android.content.res.Resources;
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import android.content.res.Resources.Theme;
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import android.content.res.TypedArray;
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import android.graphics.BlendMode;
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import android.graphics.BlendModeColorFilter;
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import android.graphics.Canvas;
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import android.graphics.ColorFilter;
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import android.graphics.Outline;
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import android.graphics.Paint;
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import android.graphics.PixelFormat;
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import android.graphics.Rect;
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import android.graphics.Shader;
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import android.graphics.Xfermode;
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import android.graphics.drawable.shapes.Shape;
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import android.util.AttributeSet;
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import com.android.internal.R;
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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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/**
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* A Drawable object that draws primitive shapes. A ShapeDrawable takes a
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* {@link android.graphics.drawable.shapes.Shape} object and manages its
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* presence on the screen. If no Shape is given, then the ShapeDrawable will
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* default to a {@link android.graphics.drawable.shapes.RectShape}.
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* <p>
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* This object can be defined in an XML file with the <code><shape></code>
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* element.
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* </p>
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* <div class="special reference"> <h3>Developer Guides</h3>
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* <p>
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* For more information about how to use ShapeDrawable, read the <a
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* href="{@docRoot}guide/topics/graphics/2d-graphics.html#shape-drawable">
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* Canvas and Drawables</a> document. For more information about defining a
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* ShapeDrawable in XML, read the
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* <a href="{@docRoot}guide/topics/resources/drawable-resource.html#Shape">
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* Drawable Resources</a> document.
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* </p>
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* </div>
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*
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* @attr ref android.R.styleable#ShapeDrawablePadding_left
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* @attr ref android.R.styleable#ShapeDrawablePadding_top
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* @attr ref android.R.styleable#ShapeDrawablePadding_right
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* @attr ref android.R.styleable#ShapeDrawablePadding_bottom
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* @attr ref android.R.styleable#ShapeDrawable_color
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* @attr ref android.R.styleable#ShapeDrawable_width
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* @attr ref android.R.styleable#ShapeDrawable_height
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*/
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public class ShapeDrawable extends Drawable {
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private @NonNull ShapeState mShapeState;
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private BlendModeColorFilter mBlendModeColorFilter;
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private boolean mMutated;
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/**
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* ShapeDrawable constructor.
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*/
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public ShapeDrawable() {
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this(new ShapeState(), null);
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}
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/**
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* Creates a ShapeDrawable with a specified Shape.
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*
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* @param s the Shape that this ShapeDrawable should be
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*/
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public ShapeDrawable(Shape s) {
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this(new ShapeState(), null);
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mShapeState.mShape = s;
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}
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/**
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* Returns the Shape of this ShapeDrawable.
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*/
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public Shape getShape() {
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return mShapeState.mShape;
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}
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/**
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* Sets the Shape of this ShapeDrawable.
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*/
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public void setShape(Shape s) {
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mShapeState.mShape = s;
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updateShape();
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}
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/**
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* Sets a ShaderFactory to which requests for a
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* {@link android.graphics.Shader} object will be made.
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*
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* @param fact an instance of your ShaderFactory implementation
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*/
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public void setShaderFactory(ShaderFactory fact) {
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mShapeState.mShaderFactory = fact;
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}
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/**
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* Returns the ShaderFactory used by this ShapeDrawable for requesting a
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* {@link android.graphics.Shader}.
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*/
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public ShaderFactory getShaderFactory() {
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return mShapeState.mShaderFactory;
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}
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/**
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* Returns the Paint used to draw the shape.
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*/
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public Paint getPaint() {
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return mShapeState.mPaint;
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}
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/**
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* Sets padding for the shape.
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*
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* @param left padding for the left side (in pixels)
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* @param top padding for the top (in pixels)
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* @param right padding for the right side (in pixels)
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* @param bottom padding for the bottom (in pixels)
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*/
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public void setPadding(int left, int top, int right, int bottom) {
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if ((left | top | right | bottom) == 0) {
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mShapeState.mPadding = null;
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} else {
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if (mShapeState.mPadding == null) {
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mShapeState.mPadding = new Rect();
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}
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mShapeState.mPadding.set(left, top, right, bottom);
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}
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invalidateSelf();
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}
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/**
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* Sets padding for this shape, defined by a Rect object. Define the padding
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* in the Rect object as: left, top, right, bottom.
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*/
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public void setPadding(Rect padding) {
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if (padding == null) {
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mShapeState.mPadding = null;
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} else {
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if (mShapeState.mPadding == null) {
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mShapeState.mPadding = new Rect();
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}
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mShapeState.mPadding.set(padding);
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}
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invalidateSelf();
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}
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/**
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* Sets the intrinsic (default) width for this shape.
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*
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* @param width the intrinsic width (in pixels)
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*/
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public void setIntrinsicWidth(int width) {
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mShapeState.mIntrinsicWidth = width;
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invalidateSelf();
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}
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/**
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* Sets the intrinsic (default) height for this shape.
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*
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* @param height the intrinsic height (in pixels)
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*/
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public void setIntrinsicHeight(int height) {
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mShapeState.mIntrinsicHeight = height;
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invalidateSelf();
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}
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@Override
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public int getIntrinsicWidth() {
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return mShapeState.mIntrinsicWidth;
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}
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@Override
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public int getIntrinsicHeight() {
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return mShapeState.mIntrinsicHeight;
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}
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@Override
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public boolean getPadding(Rect padding) {
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if (mShapeState.mPadding != null) {
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padding.set(mShapeState.mPadding);
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return true;
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} else {
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return super.getPadding(padding);
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}
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}
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private static int modulateAlpha(int paintAlpha, int alpha) {
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int scale = alpha + (alpha >>> 7); // convert to 0..256
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return paintAlpha * scale >>> 8;
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}
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/**
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* Called from the drawable's draw() method after the canvas has been set to
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* draw the shape at (0,0). Subclasses can override for special effects such
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* as multiple layers, stroking, etc.
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*/
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protected void onDraw(Shape shape, Canvas canvas, Paint paint) {
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shape.draw(canvas, paint);
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}
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@Override
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public void draw(Canvas canvas) {
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final Rect r = getBounds();
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final ShapeState state = mShapeState;
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final Paint paint = state.mPaint;
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final int prevAlpha = paint.getAlpha();
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paint.setAlpha(modulateAlpha(prevAlpha, state.mAlpha));
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// only draw shape if it may affect output
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if (paint.getAlpha() != 0 || paint.getXfermode() != null || paint.hasShadowLayer()) {
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final boolean clearColorFilter;
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if (mBlendModeColorFilter != null && paint.getColorFilter() == null) {
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paint.setColorFilter(mBlendModeColorFilter);
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clearColorFilter = true;
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} else {
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clearColorFilter = false;
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}
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if (state.mShape != null) {
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// need the save both for the translate, and for the (unknown)
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// Shape
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final int count = canvas.save();
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canvas.translate(r.left, r.top);
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onDraw(state.mShape, canvas, paint);
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canvas.restoreToCount(count);
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} else {
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canvas.drawRect(r, paint);
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}
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if (clearColorFilter) {
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paint.setColorFilter(null);
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}
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}
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// restore
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paint.setAlpha(prevAlpha);
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}
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@Override
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public @Config int getChangingConfigurations() {
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return super.getChangingConfigurations() | mShapeState.getChangingConfigurations();
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}
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/**
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* Set the alpha level for this drawable [0..255]. Note that this drawable
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* also has a color in its paint, which has an alpha as well. These two
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* values are automatically combined during drawing. Thus if the color's
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* alpha is 75% (i.e. 192) and the drawable's alpha is 50% (i.e. 128), then
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* the combined alpha that will be used during drawing will be 37.5% (i.e.
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* 96).
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*/
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@Override
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public void setAlpha(int alpha) {
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mShapeState.mAlpha = alpha;
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invalidateSelf();
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}
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@Override
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public int getAlpha() {
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return mShapeState.mAlpha;
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}
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@Override
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public void setTintList(ColorStateList tint) {
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mShapeState.mTint = tint;
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mBlendModeColorFilter = updateBlendModeFilter(mBlendModeColorFilter, tint,
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mShapeState.mBlendMode);
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invalidateSelf();
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}
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@Override
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public void setTintBlendMode(@NonNull BlendMode blendMode) {
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mShapeState.mBlendMode = blendMode;
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mBlendModeColorFilter = updateBlendModeFilter(mBlendModeColorFilter, mShapeState.mTint,
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blendMode);
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invalidateSelf();
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}
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@Override
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public void setColorFilter(ColorFilter colorFilter) {
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mShapeState.mPaint.setColorFilter(colorFilter);
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invalidateSelf();
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}
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/**
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* @hide
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*/
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@Override
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@TestApi
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public void setXfermode(@Nullable Xfermode mode) {
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mShapeState.mPaint.setXfermode(mode);
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invalidateSelf();
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}
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@Override
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public int getOpacity() {
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if (mShapeState.mShape == null) {
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final Paint p = mShapeState.mPaint;
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if (p.getXfermode() == null) {
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final int alpha = p.getAlpha();
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if (alpha == 0) {
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return PixelFormat.TRANSPARENT;
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}
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if (alpha == 255) {
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return PixelFormat.OPAQUE;
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}
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}
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}
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// not sure, so be safe
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return PixelFormat.TRANSLUCENT;
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}
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@Override
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public void setDither(boolean dither) {
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mShapeState.mPaint.setDither(dither);
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invalidateSelf();
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}
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@Override
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protected void onBoundsChange(Rect bounds) {
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super.onBoundsChange(bounds);
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updateShape();
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}
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@Override
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protected boolean onStateChange(int[] stateSet) {
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final ShapeState state = mShapeState;
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if (state.mTint != null && state.mBlendMode != null) {
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mBlendModeColorFilter = updateBlendModeFilter(mBlendModeColorFilter, state.mTint,
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state.mBlendMode);
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return true;
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}
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return false;
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}
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@Override
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public boolean isStateful() {
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final ShapeState s = mShapeState;
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return super.isStateful() || (s.mTint != null && s.mTint.isStateful());
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}
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/** @hide */
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@Override
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public boolean hasFocusStateSpecified() {
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return mShapeState.mTint != null && mShapeState.mTint.hasFocusStateSpecified();
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}
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/**
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* Subclasses override this to parse custom subelements. If you handle it,
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* return true, else return <em>super.inflateTag(...)</em>.
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*/
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protected boolean inflateTag(String name, Resources r, XmlPullParser parser,
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AttributeSet attrs) {
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if ("padding".equals(name)) {
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TypedArray a = r.obtainAttributes(attrs,
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com.android.internal.R.styleable.ShapeDrawablePadding);
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setPadding(
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a.getDimensionPixelOffset(
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com.android.internal.R.styleable.ShapeDrawablePadding_left, 0),
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a.getDimensionPixelOffset(
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com.android.internal.R.styleable.ShapeDrawablePadding_top, 0),
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a.getDimensionPixelOffset(
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com.android.internal.R.styleable.ShapeDrawablePadding_right, 0),
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a.getDimensionPixelOffset(
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com.android.internal.R.styleable.ShapeDrawablePadding_bottom, 0));
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a.recycle();
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return true;
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}
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return false;
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}
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@Override
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public void inflate(Resources r, XmlPullParser parser, AttributeSet attrs, Theme theme)
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throws XmlPullParserException, IOException {
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super.inflate(r, parser, attrs, theme);
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final TypedArray a = obtainAttributes(r, theme, attrs, R.styleable.ShapeDrawable);
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updateStateFromTypedArray(a);
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a.recycle();
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int type;
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final int outerDepth = parser.getDepth();
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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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final String name = parser.getName();
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// call our subclass
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if (!inflateTag(name, r, parser, attrs)) {
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android.util.Log.w("drawable", "Unknown element: " + name +
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" for ShapeDrawable " + this);
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}
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}
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// Update local properties.
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updateLocalState();
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}
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@Override
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public void applyTheme(Theme t) {
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super.applyTheme(t);
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final ShapeState state = mShapeState;
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if (state == null) {
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return;
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}
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if (state.mThemeAttrs != null) {
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final TypedArray a = t.resolveAttributes(state.mThemeAttrs, R.styleable.ShapeDrawable);
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updateStateFromTypedArray(a);
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a.recycle();
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}
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// Apply theme to contained color state list.
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if (state.mTint != null && state.mTint.canApplyTheme()) {
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state.mTint = state.mTint.obtainForTheme(t);
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}
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// Update local properties.
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updateLocalState();
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}
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private void updateStateFromTypedArray(TypedArray a) {
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final ShapeState state = mShapeState;
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final Paint paint = state.mPaint;
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// Account for any configuration changes.
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state.mChangingConfigurations |= a.getChangingConfigurations();
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// Extract the theme attributes, if any.
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state.mThemeAttrs = a.extractThemeAttrs();
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int color = paint.getColor();
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color = a.getColor(R.styleable.ShapeDrawable_color, color);
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paint.setColor(color);
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boolean dither = paint.isDither();
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dither = a.getBoolean(R.styleable.ShapeDrawable_dither, dither);
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paint.setDither(dither);
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state.mIntrinsicWidth = (int) a.getDimension(
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R.styleable.ShapeDrawable_width, state.mIntrinsicWidth);
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state.mIntrinsicHeight = (int) a.getDimension(
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R.styleable.ShapeDrawable_height, state.mIntrinsicHeight);
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final int tintMode = a.getInt(R.styleable.ShapeDrawable_tintMode, -1);
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if (tintMode != -1) {
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state.mBlendMode = Drawable.parseBlendMode(tintMode, BlendMode.SRC_IN);
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}
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final ColorStateList tint = a.getColorStateList(R.styleable.ShapeDrawable_tint);
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if (tint != null) {
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state.mTint = tint;
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}
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}
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private void updateShape() {
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if (mShapeState.mShape != null) {
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final Rect r = getBounds();
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final int w = r.width();
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final int h = r.height();
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mShapeState.mShape.resize(w, h);
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if (mShapeState.mShaderFactory != null) {
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mShapeState.mPaint.setShader(mShapeState.mShaderFactory.resize(w, h));
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}
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}
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invalidateSelf();
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}
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@Override
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public void getOutline(Outline outline) {
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if (mShapeState.mShape != null) {
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mShapeState.mShape.getOutline(outline);
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outline.setAlpha(getAlpha() / 255.0f);
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}
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}
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@Override
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public ConstantState getConstantState() {
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mShapeState.mChangingConfigurations = getChangingConfigurations();
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return mShapeState;
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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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mShapeState = new ShapeState(mShapeState);
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updateLocalState();
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mMutated = true;
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}
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return this;
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}
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/**
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* @hide
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*/
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public void clearMutated() {
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super.clearMutated();
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mMutated = false;
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}
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/**
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* Defines the intrinsic properties of this ShapeDrawable's Shape.
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*/
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static final class ShapeState extends ConstantState {
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final @NonNull Paint mPaint;
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@Config int mChangingConfigurations;
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int[] mThemeAttrs;
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Shape mShape;
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ColorStateList mTint;
|
|
BlendMode mBlendMode = DEFAULT_BLEND_MODE;
|
|
Rect mPadding;
|
|
int mIntrinsicWidth;
|
|
int mIntrinsicHeight;
|
|
int mAlpha = 255;
|
|
ShaderFactory mShaderFactory;
|
|
|
|
/**
|
|
* Constructs a new ShapeState.
|
|
*/
|
|
ShapeState() {
|
|
mPaint = new Paint(Paint.ANTI_ALIAS_FLAG);
|
|
}
|
|
|
|
/**
|
|
* Constructs a new ShapeState that contains a deep copy of the
|
|
* specified ShapeState.
|
|
*
|
|
* @param orig the state to create a deep copy of
|
|
*/
|
|
ShapeState(@NonNull ShapeState orig) {
|
|
mChangingConfigurations = orig.mChangingConfigurations;
|
|
mPaint = new Paint(orig.mPaint);
|
|
mThemeAttrs = orig.mThemeAttrs;
|
|
if (orig.mShape != null) {
|
|
try {
|
|
mShape = orig.mShape.clone();
|
|
} catch (CloneNotSupportedException e) {
|
|
// Well, at least we tried.
|
|
mShape = orig.mShape;
|
|
}
|
|
}
|
|
mTint = orig.mTint;
|
|
mBlendMode = orig.mBlendMode;
|
|
if (orig.mPadding != null) {
|
|
mPadding = new Rect(orig.mPadding);
|
|
}
|
|
mIntrinsicWidth = orig.mIntrinsicWidth;
|
|
mIntrinsicHeight = orig.mIntrinsicHeight;
|
|
mAlpha = orig.mAlpha;
|
|
|
|
// We don't have any way to clone a shader factory, so hopefully
|
|
// this class doesn't contain any local state.
|
|
mShaderFactory = orig.mShaderFactory;
|
|
}
|
|
|
|
@Override
|
|
public boolean canApplyTheme() {
|
|
return mThemeAttrs != null
|
|
|| (mTint != null && mTint.canApplyTheme());
|
|
}
|
|
|
|
@Override
|
|
public Drawable newDrawable() {
|
|
return new ShapeDrawable(new ShapeState(this), null);
|
|
}
|
|
|
|
@Override
|
|
public Drawable newDrawable(Resources res) {
|
|
return new ShapeDrawable(new ShapeState(this), res);
|
|
}
|
|
|
|
@Override
|
|
public @Config int getChangingConfigurations() {
|
|
return mChangingConfigurations
|
|
| (mTint != null ? mTint.getChangingConfigurations() : 0);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* The one constructor to rule them all. This is called by all public
|
|
* constructors to set the state and initialize local properties.
|
|
*/
|
|
private ShapeDrawable(ShapeState state, Resources res) {
|
|
mShapeState = state;
|
|
|
|
updateLocalState();
|
|
}
|
|
|
|
/**
|
|
* Initializes local dynamic properties from state. This should be called
|
|
* after significant state changes, e.g. from the One True Constructor and
|
|
* after inflating or applying a theme.
|
|
*/
|
|
private void updateLocalState() {
|
|
mBlendModeColorFilter = updateBlendModeFilter(mBlendModeColorFilter, mShapeState.mTint,
|
|
mShapeState.mBlendMode);
|
|
}
|
|
|
|
/**
|
|
* Base class defines a factory object that is called each time the drawable
|
|
* is resized (has a new width or height). Its resize() method returns a
|
|
* corresponding shader, or null. Implement this class if you'd like your
|
|
* ShapeDrawable to use a special {@link android.graphics.Shader}, such as a
|
|
* {@link android.graphics.LinearGradient}.
|
|
*/
|
|
public static abstract class ShaderFactory {
|
|
/**
|
|
* Returns the Shader to be drawn when a Drawable is drawn. The
|
|
* dimensions of the Drawable are passed because they may be needed to
|
|
* adjust how the Shader is configured for drawing. This is called by
|
|
* ShapeDrawable.setShape().
|
|
*
|
|
* @param width the width of the Drawable being drawn
|
|
* @param height the heigh of the Drawable being drawn
|
|
* @return the Shader to be drawn
|
|
*/
|
|
public abstract Shader resize(int width, int height);
|
|
}
|
|
}
|