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// Copyright 2022 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/native_theme/native_theme_fluent.h"
#include <memory>
#include "cc/paint/paint_flags.h"
#include "cc/paint/paint_op.h"
#include "cc/paint/paint_record.h"
#include "cc/paint/record_paint_canvas.h"
#include "skia/ext/font_utils.h"
#include "testing/gtest/include/gtest/gtest.h"
#include "third_party/skia/include/core/SkColor.h"
#include "third_party/skia/include/core/SkTypeface.h"
#include "ui/color/color_id.h"
#include "ui/color/color_provider.h"
#include "ui/color/color_provider_utils.h"
#include "ui/gfx/geometry/rect_conversions.h"
#include "ui/gfx/geometry/rect_f.h"
#include "ui/native_theme/native_theme.h"
#include "ui/native_theme/native_theme_constants_fluent.h"
namespace ui {
class NativeThemeFluentTest : public ::testing::Test,
public ::testing::WithParamInterface<float> {
protected:
void VerifyArrowRectCommonDimensions(const gfx::RectF& arrow_rect) const {
EXPECT_FALSE(arrow_rect.IsEmpty());
EXPECT_EQ(arrow_rect.width(), arrow_rect.height());
EXPECT_EQ(arrow_rect.width(), std::floor(arrow_rect.width()));
}
void VerifyArrowRectIsCentered(const gfx::RectF& button_rect,
const gfx::RectF& arrow_rect,
NativeTheme::Part part) const {
if (part == NativeTheme::kScrollbarUpArrow ||
part == NativeTheme::kScrollbarDownArrow) {
EXPECT_EQ(button_rect.CenterPoint().x(), arrow_rect.CenterPoint().x());
// Due to the offset the arrow rect is shifted from the center.
// See NativeThemeFluent::OffsetArrowRect() for more details. Same below.
EXPECT_NEAR(button_rect.CenterPoint().y(), arrow_rect.CenterPoint().y(),
ScaleFromDIP() * 2);
} else {
EXPECT_EQ(button_rect.CenterPoint().y(), arrow_rect.CenterPoint().y());
EXPECT_NEAR(button_rect.CenterPoint().x(), arrow_rect.CenterPoint().x(),
ScaleFromDIP() * 2);
}
}
void VerifyArrowRectIsIntRect(const gfx::RectF& arrow_rect) const {
if (theme_.ArrowIconsAvailable()) {
return;
}
// Verify that an arrow rect with triangular arrows is an integer rect.
EXPECT_TRUE(IsNearestRectWithinDistance(arrow_rect, 0.01f));
}
void VerifyArrowRectLengthRatio(const gfx::RectF& button_rect,
const gfx::RectF& arrow_rect,
NativeTheme::State state) const {
const int smaller_button_side =
std::min(button_rect.width(), button_rect.height());
if (state == NativeTheme::kNormal) {
// Default state arrows are slightly bigger than the half of the button's
// smaller side (track thickness).
EXPECT_GT(arrow_rect.width(), smaller_button_side / 2.0f);
EXPECT_LT(arrow_rect.width(), smaller_button_side);
} else {
EXPECT_GT(arrow_rect.width(), smaller_button_side / 3.0f);
EXPECT_LT(arrow_rect.width(), smaller_button_side / 1.5f);
}
}
void VerifyArrowRect() const {
for (auto const& part :
{NativeTheme::kScrollbarUpArrow, NativeTheme::kScrollbarLeftArrow}) {
const gfx::RectF button_rect(ButtonRect(part));
for (auto const& state : {NativeTheme::kNormal, NativeTheme::kPressed}) {
const gfx::RectF arrow_rect =
theme_.GetArrowRect(ToNearestRect(button_rect), part, state);
VerifyArrowRectCommonDimensions(arrow_rect);
VerifyArrowRectIsIntRect(arrow_rect);
VerifyArrowRectIsCentered(button_rect, arrow_rect, part);
VerifyArrowRectLengthRatio(button_rect, arrow_rect, state);
}
}
}
gfx::RectF ButtonRect(NativeTheme::Part part) const {
const int button_length =
base::ClampFloor(kFluentScrollbarButtonSideLength * ScaleFromDIP());
const int track_thickness =
base::ClampFloor(kFluentScrollbarThickness * ScaleFromDIP());
if (part == NativeTheme::kScrollbarUpArrow ||
part == NativeTheme::kScrollbarDownArrow) {
return gfx::RectF(0, 0, track_thickness, button_length);
}
return gfx::RectF(0, 0, button_length, track_thickness);
}
float ScaleFromDIP() const { return GetParam(); }
// Mocks the availability of the font for drawing arrow icons.
void SetArrowIconsAvailable(bool enabled) {
if (enabled) {
theme_.typeface_ = skia::DefaultTypeface();
EXPECT_TRUE(theme_.ArrowIconsAvailable());
} else {
theme_.typeface_ = nullptr;
EXPECT_FALSE(theme_.ArrowIconsAvailable());
}
}
NativeThemeFluent theme_{false};
};
// Verify the dimensions of an arrow rect with triangular arrows for a given
// button rect depending on the arrow direction and state.
TEST_P(NativeThemeFluentTest, VerifyArrowRectWithTriangularArrows) {
SetArrowIconsAvailable(false);
VerifyArrowRect();
}
// Verify the dimensions of an arrow rect with arrow icons for a given
// button rect depending on the arrow direction and state.
TEST_P(NativeThemeFluentTest, VerifyArrowRectWithArrowIcons) {
SetArrowIconsAvailable(true);
VerifyArrowRect();
}
// Verify that the thumb paint function draws a round rectangle.
// Generally, NativeThemeFluent::Paint* functions are covered by
// Blink's web tests; but in web tests we render the thumbs as squares
// instead of pill-shaped. This test ensures we don't lose coverage on the
// PaintOp called to draw the thumb.
TEST_F(NativeThemeFluentTest, PaintThumbRoundedCorners) {
cc::RecordPaintCanvas canvas;
ColorProvider color_provider;
constexpr gfx::Rect kRect(15, 100);
// `is_web_test` is `false` by default.
const NativeTheme::ScrollbarThumbExtraParams extra_params;
theme_.PaintScrollbarThumb(
&canvas, &color_provider,
/*part=*/NativeTheme::kScrollbarVerticalThumb,
/*state=*/NativeTheme::kNormal, kRect, extra_params,
/*color_scheme=*/NativeTheme::ColorScheme::kDefault);
EXPECT_EQ(canvas.TotalOpCount(), 1u);
EXPECT_EQ(canvas.ReleaseAsRecord().GetFirstOp().GetType(),
cc::PaintOpType::kDrawRRect);
}
// Verify that GetThumbColor returns the correct color given the scrollbar state
// and extra params.
TEST_F(NativeThemeFluentTest, GetThumbColor) {
const std::unique_ptr<ui::ColorProvider> color_provider =
CreateDefaultColorProviderForBlink(/*dark_mode=*/false);
NativeTheme::ScrollbarThumbExtraParams extra_params;
const auto to_skcolor = [&](auto id) {
return SkColor4f::FromColor(color_provider->GetColor(id));
};
const auto scrollbar_color = [&](auto state) {
return theme_.GetScrollbarThumbColor(*color_provider, state, extra_params);
};
const SkColor4f normal_thumb_color =
to_skcolor(kColorWebNativeControlScrollbarThumb);
const SkColor4f hovered_thumb_color =
to_skcolor(kColorWebNativeControlScrollbarThumbHovered);
const SkColor4f pressed_thumb_color =
to_skcolor(kColorWebNativeControlScrollbarThumbPressed);
const SkColor4f minimal_thumb_color =
to_skcolor(kColorWebNativeControlScrollbarThumbOverlayMinimalMode);
static constexpr SkColor css_color = SK_ColorRED;
// When there are no extra params set, the colors should be the ones that
// correspond to the ColorId.
EXPECT_EQ(normal_thumb_color, scrollbar_color(NativeTheme::kNormal));
EXPECT_EQ(hovered_thumb_color, scrollbar_color(NativeTheme::kHovered));
EXPECT_EQ(pressed_thumb_color, scrollbar_color(NativeTheme::kPressed));
// When the thumb is being painted in minimal mode, the normal state should
// return the minimal mode's transparent color while the other states remain
// unaffected.
extra_params.is_thumb_minimal_mode = true;
EXPECT_EQ(minimal_thumb_color, scrollbar_color(NativeTheme::kNormal));
EXPECT_EQ(hovered_thumb_color, scrollbar_color(NativeTheme::kHovered));
EXPECT_EQ(pressed_thumb_color, scrollbar_color(NativeTheme::kPressed));
// When there is a css color set in the extra params, we modify the color
// when it is hovered or pressed to signal the change in state.
extra_params.thumb_color = css_color;
EXPECT_EQ(to_skcolor(css_color), scrollbar_color(NativeTheme::kNormal));
EXPECT_NE(to_skcolor(css_color), scrollbar_color(NativeTheme::kHovered));
EXPECT_NE(to_skcolor(css_color), scrollbar_color(NativeTheme::kPressed));
}
INSTANTIATE_TEST_SUITE_P(All,
NativeThemeFluentTest,
::testing::Values(1.f, 1.25f, 1.5f, 1.75f, 2.f));
} // namespace ui
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