9ce2bf7e0c
Experimental force_dark prototype mode. Enabled by setting debug.hwui.force_dark to true. Test: verified nothing changes without prop being set Change-Id: Ib02f3f1a9c591cab1f312b827451f04c782c2f41
113 lines
3.6 KiB
C++
113 lines
3.6 KiB
C++
/*
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* Copyright (C) 2018 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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#include "CanvasTransform.h"
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#include "Properties.h"
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#include <SkColorFilter.h>
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#include <SkPaint.h>
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#include <log/log.h>
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namespace android::uirenderer {
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static SkColor makeLight(SkColor color) {
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SkScalar hsv[3];
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SkColorToHSV(color, hsv);
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if (hsv[1] > .2f) return color;
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// hsv[1] *= .85f;
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// hsv[2] = std::min(1.0f, std::max(hsv[2], 1 - hsv[2]) * 1.3f);
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hsv[2] = std::max(hsv[2], 1.1f - hsv[2]);
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return SkHSVToColor(SkColorGetA(color), hsv);
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}
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static SkColor makeDark(SkColor color) {
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SkScalar hsv[3];
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SkColorToHSV(color, hsv);
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if (hsv[1] > .2f) return color;
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// hsv[1] *= .85f;
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// hsv[2] = std::max(0.0f, std::min(hsv[2], 1 - hsv[2]) * .7f);
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hsv[2] = std::min(hsv[2], 1.1f - hsv[2]);
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return SkHSVToColor(SkColorGetA(color), hsv);
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}
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static SkColor transformColor(ColorTransform transform, SkColor color) {
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switch (transform) {
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case ColorTransform::Light:
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return makeLight(color);
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case ColorTransform::Dark:
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return makeDark(color);
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default:
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return color;
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}
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}
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static void applyColorTransform(ColorTransform transform, SkPaint& paint) {
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if (transform == ColorTransform::None) return;
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SkColor newColor = transformColor(transform, paint.getColor());
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paint.setColor(newColor);
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if (paint.getColorFilter()) {
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SkBlendMode mode;
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SkColor color;
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// TODO: LRU this or something to avoid spamming new color mode filters
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if (paint.getColorFilter()->asColorMode(&color, &mode)) {
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color = transformColor(transform, color);
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paint.setColorFilter(SkColorFilter::MakeModeFilter(color, mode));
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}
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}
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}
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class ColorFilterCanvas : public SkPaintFilterCanvas {
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public:
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ColorFilterCanvas(ColorTransform transform, SkCanvas* canvas)
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: SkPaintFilterCanvas(canvas), mTransform(transform) {}
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bool onFilter(SkTCopyOnFirstWrite<SkPaint>* paint, Type type) const override {
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if (*paint) {
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applyColorTransform(mTransform, *(paint->writable()));
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}
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return true;
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}
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private:
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ColorTransform mTransform;
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};
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std::unique_ptr<SkCanvas> makeTransformCanvas(SkCanvas* inCanvas, ColorTransform transform) {
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switch (transform) {
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case ColorTransform::Light:
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return std::make_unique<ColorFilterCanvas>(ColorTransform::Light, inCanvas);
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case ColorTransform::Dark:
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return std::make_unique<ColorFilterCanvas>(ColorTransform::Dark, inCanvas);
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default:
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return nullptr;
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}
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}
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std::unique_ptr<SkCanvas> makeTransformCanvas(SkCanvas* inCanvas, UsageHint usageHint) {
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if (Properties::forceDarkMode) {
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switch (usageHint) {
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case UsageHint::Unknown:
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return makeTransformCanvas(inCanvas, ColorTransform::Light);
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case UsageHint::Background:
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return makeTransformCanvas(inCanvas, ColorTransform::Dark);
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}
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}
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return nullptr;
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}
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}; // namespace android::uirenderer
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