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// Copyright 2021 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "ui/views/cascading_property.h"
#include "ui/base/theme_provider.h"
#include "ui/base/ui_base_features.h"
#include "ui/color/color_id.h"
#include "ui/color/color_provider.h"
#include "ui/gfx/color_utils.h"
DEFINE_EXPORTED_UI_CLASS_PROPERTY_TYPE(VIEWS_EXPORT,
views::CascadingProperty<SkColor>*)
namespace views {
namespace {
class CascadingColorProviderColor final : public CascadingProperty<SkColor> {
public:
explicit CascadingColorProviderColor(ui::ColorId color_id)
: color_id_(color_id) {}
// CascadingProperty<SkColor>:
SkColor GetValue(const View* view) const override {
return view->GetColorProvider()->GetColor(color_id_);
}
private:
const ui::ColorId color_id_;
};
} // namespace
DEFINE_OWNED_UI_CLASS_PROPERTY_KEY(CascadingProperty<SkColor>,
kCascadingBackgroundColor)
void SetCascadingColorProviderColor(
views::View* view,
const ui::ClassProperty<CascadingProperty<SkColor>*>* property_key,
ui::ColorId color_id) {
SetCascadingProperty(
view, property_key,
std::make_unique<views::CascadingColorProviderColor>(color_id));
}
SkColor GetCascadingBackgroundColor(View* view) {
const std::optional<SkColor> color =
GetCascadingProperty(view, kCascadingBackgroundColor);
return color.value_or(
view->GetColorProvider()->GetColor(ui::kColorWindowBackground));
}
SkColor GetCascadingAccentColor(View* view) {
const SkColor default_color =
view->GetColorProvider()->GetColor(ui::kColorFocusableBorderFocused);
const SkColor background_color = GetCascadingBackgroundColor(view);
return color_utils::BlendForMinContrast(
default_color, background_color, std::nullopt,
color_utils::kMinimumVisibleContrastRatio)
.color;
}
} // namespace views
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