Auto-dark mode prototype (9ce2bf7e) · Commits · e / os / android_frameworks_base

core/java/android/view/RenderNode.java

+25 −0

Original line number	Diff line number	Diff line
		@@ -16,6 +16,7 @@

		package android.view;

		import android.annotation.IntDef;
		import android.annotation.NonNull;
		import android.annotation.Nullable;
		import android.graphics.Matrix;
		@@ -29,6 +30,9 @@ import dalvik.annotation.optimization.FastNative;

		import libcore.util.NativeAllocationRegistry;

		import java.lang.annotation.Retention;
		import java.lang.annotation.RetentionPolicy;

		/**
		* <p>A display list records a series of graphics related operations and can replay
		* them later. Display lists are usually built by recording operations on a
		@@ -449,6 +453,25 @@ public class RenderNode {
		return nSetHasOverlappingRendering(mNativeRenderNode, hasOverlappingRendering);
		}

		/** @hide */
		@IntDef({USAGE_BACKGROUND})
		@Retention(RetentionPolicy.SOURCE)
		public @interface UsageHint {}

		/** The default usage hint */
		public static final int USAGE_UNKNOWN = 0;

		/** Usage is background content */
		public static final int USAGE_BACKGROUND = 1;

		/**
		* Provides a hint on what this RenderNode's display list content contains. This hint is used
		* for automatic content transforms to improve accessibility or similar.
		*/
		public void setUsageHint(@UsageHint int usageHint) {
		nSetUsageHint(mNativeRenderNode, usageHint);
		}

		/**
		* Indicates whether the content of this display list overlaps.
		*
		@@ -948,6 +971,8 @@ public class RenderNode {
		private static native boolean nSetHasOverlappingRendering(long renderNode,
		boolean hasOverlappingRendering);
		@CriticalNative
		private static native void nSetUsageHint(long renderNode, int usageHint);
		@CriticalNative
		private static native boolean nSetElevation(long renderNode, float lift);
		@CriticalNative
		private static native boolean nSetTranslationX(long renderNode, float translationX);

core/java/android/view/View.java

+1 −0

Original line number	Diff line number	Diff line
		@@ -20442,6 +20442,7 @@ public class View implements Drawable.Callback, KeyEvent.Callback,
		private RenderNode getDrawableRenderNode(Drawable drawable, RenderNode renderNode) {
		if (renderNode == null) {
		renderNode = RenderNode.create(drawable.getClass().getName(), this);
		renderNode.setUsageHint(RenderNode.USAGE_BACKGROUND);
		}

		final Rect bounds = drawable.getBounds();

core/jni/android_view_RenderNode.cpp

+6 −0

Original line number	Diff line number	Diff line
		@@ -222,6 +222,11 @@ static jboolean android_view_RenderNode_setHasOverlappingRendering(jlong renderN
		RenderNode::GENERIC);
		}

		static void android_view_RenderNode_setUsageHint(jlong renderNodePtr, jint usageHint) {
		RenderNode* renderNode = reinterpret_cast<RenderNode*>(renderNodePtr);
		renderNode->setUsageHint(static_cast<UsageHint>(usageHint));
		}

		static jboolean android_view_RenderNode_setElevation(jlong renderNodePtr, float elevation) {
		return SET_AND_DIRTY(setElevation, elevation, RenderNode::Z);
		}
		@@ -614,6 +619,7 @@ static const JNINativeMethod gMethods[] = {
		{ "nSetAlpha", "(JF)Z", (void*) android_view_RenderNode_setAlpha },
		{ "nSetHasOverlappingRendering", "(JZ)Z",
		(void*) android_view_RenderNode_setHasOverlappingRendering },
		{ "nSetUsageHint", "(JI)V", (void*) android_view_RenderNode_setUsageHint },
		{ "nSetElevation", "(JF)Z", (void*) android_view_RenderNode_setElevation },
		{ "nSetTranslationX", "(JF)Z", (void*) android_view_RenderNode_setTranslationX },
		{ "nSetTranslationY", "(JF)Z", (void*) android_view_RenderNode_setTranslationY },

libs/hwui/Android.bp

+1 −0

Original line number	Diff line number	Diff line
		@@ -198,6 +198,7 @@ cc_defaults {
		"AnimatorManager.cpp",
		"Caches.cpp",
		"CanvasState.cpp",
		"CanvasTransform.cpp",
		"ClipArea.cpp",
		"DamageAccumulator.cpp",
		"DeferredLayerUpdater.cpp",

libs/hwui/CanvasTransform.cpp

0 → 100644

+113 −0

Original line number	Diff line number	Diff line
		/*
		* Copyright (C) 2018 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.
		*/

		#include "CanvasTransform.h"
		#include "Properties.h"

		#include <SkColorFilter.h>
		#include <SkPaint.h>
		#include <log/log.h>

		namespace android::uirenderer {

		static SkColor makeLight(SkColor color) {
		SkScalar hsv[3];
		SkColorToHSV(color, hsv);
		if (hsv[1] > .2f) return color;
		// hsv[1] *= .85f;
		// hsv[2] = std::min(1.0f, std::max(hsv[2], 1 - hsv[2]) * 1.3f);
		hsv[2] = std::max(hsv[2], 1.1f - hsv[2]);
		return SkHSVToColor(SkColorGetA(color), hsv);
		}

		static SkColor makeDark(SkColor color) {
		SkScalar hsv[3];
		SkColorToHSV(color, hsv);
		if (hsv[1] > .2f) return color;
		// hsv[1] *= .85f;
		// hsv[2] = std::max(0.0f, std::min(hsv[2], 1 - hsv[2]) * .7f);
		hsv[2] = std::min(hsv[2], 1.1f - hsv[2]);
		return SkHSVToColor(SkColorGetA(color), hsv);
		}

		static SkColor transformColor(ColorTransform transform, SkColor color) {
		switch (transform) {
		case ColorTransform::Light:
		return makeLight(color);
		case ColorTransform::Dark:
		return makeDark(color);
		default:
		return color;
		}
		}

		static void applyColorTransform(ColorTransform transform, SkPaint& paint) {
		if (transform == ColorTransform::None) return;

		SkColor newColor = transformColor(transform, paint.getColor());
		paint.setColor(newColor);

		if (paint.getColorFilter()) {
		SkBlendMode mode;
		SkColor color;
		// TODO: LRU this or something to avoid spamming new color mode filters
		if (paint.getColorFilter()->asColorMode(&color, &mode)) {
		color = transformColor(transform, color);
		paint.setColorFilter(SkColorFilter::MakeModeFilter(color, mode));
		}
		}
		}

		class ColorFilterCanvas : public SkPaintFilterCanvas {
		public:
		ColorFilterCanvas(ColorTransform transform, SkCanvas* canvas)
		: SkPaintFilterCanvas(canvas), mTransform(transform) {}

		bool onFilter(SkTCopyOnFirstWrite<SkPaint>* paint, Type type) const override {
		if (*paint) {
		applyColorTransform(mTransform, *(paint->writable()));
		}
		return true;
		}

		private:
		ColorTransform mTransform;
		};

		std::unique_ptr<SkCanvas> makeTransformCanvas(SkCanvas* inCanvas, ColorTransform transform) {
		switch (transform) {
		case ColorTransform::Light:
		return std::make_unique<ColorFilterCanvas>(ColorTransform::Light, inCanvas);
		case ColorTransform::Dark:
		return std::make_unique<ColorFilterCanvas>(ColorTransform::Dark, inCanvas);
		default:
		return nullptr;
		}
		}

		std::unique_ptr<SkCanvas> makeTransformCanvas(SkCanvas* inCanvas, UsageHint usageHint) {
		if (Properties::forceDarkMode) {
		switch (usageHint) {
		case UsageHint::Unknown:
		return makeTransformCanvas(inCanvas, ColorTransform::Light);
		case UsageHint::Background:
		return makeTransformCanvas(inCanvas, ColorTransform::Dark);
		}
		}
		return nullptr;
		}

		}; // namespace android::uirenderer
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