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// Copyright 2025 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "third_party/blink/renderer/platform/geometry/contoured_rect.h"
#include "testing/gtest/include/gtest/gtest.h"
#include "third_party/blink/renderer/platform/geometry/infinite_int_rect.h"
#include "third_party/blink/renderer/platform/wtf/text/wtf_string.h"
namespace blink {
#define TEST_INTERCEPTS(roundedRect, yCoordinate, expectedMinXIntercept, \
expectedMaxXIntercept) \
{ \
float min_x_intercept; \
float max_x_intercept; \
EXPECT_TRUE( \
ContouredRect(roundedRect) \
.XInterceptsAtY(yCoordinate, min_x_intercept, max_x_intercept)); \
EXPECT_FLOAT_EQ(expectedMinXIntercept, min_x_intercept); \
EXPECT_FLOAT_EQ(expectedMaxXIntercept, max_x_intercept); \
}
TEST(ContouredRectTest, zeroRadii) {
FloatRoundedRect r = FloatRoundedRect(1, 2, 3, 4);
EXPECT_EQ(gfx::RectF(1, 2, 3, 4), r.Rect());
EXPECT_EQ(gfx::SizeF(), r.GetRadii().TopLeft());
EXPECT_EQ(gfx::SizeF(), r.GetRadii().TopRight());
EXPECT_EQ(gfx::SizeF(), r.GetRadii().BottomLeft());
EXPECT_EQ(gfx::SizeF(), r.GetRadii().BottomRight());
EXPECT_TRUE(r.GetRadii().IsZero());
EXPECT_FALSE(r.IsRounded());
EXPECT_FALSE(r.IsEmpty());
EXPECT_EQ(gfx::RectF(1, 2, 0, 0), r.TopLeftCorner());
EXPECT_EQ(gfx::RectF(4, 2, 0, 0), r.TopRightCorner());
EXPECT_EQ(gfx::RectF(4, 6, 0, 0), r.BottomRightCorner());
EXPECT_EQ(gfx::RectF(1, 6, 0, 0), r.BottomLeftCorner());
TEST_INTERCEPTS(r, 2, r.Rect().x(), r.Rect().right());
TEST_INTERCEPTS(r, 4, r.Rect().x(), r.Rect().right());
TEST_INTERCEPTS(r, 6, r.Rect().x(), r.Rect().right());
float min_x_intercept;
float max_x_intercept;
EXPECT_FALSE(
ContouredRect(r).XInterceptsAtY(1, min_x_intercept, max_x_intercept));
EXPECT_FALSE(
ContouredRect(r).XInterceptsAtY(7, min_x_intercept, max_x_intercept));
// The FloatRoundedRect::Outset() and Inset() don't change zero radii.
r.Outset(20);
EXPECT_TRUE(r.GetRadii().IsZero());
r.Inset(10);
EXPECT_TRUE(r.GetRadii().IsZero());
}
TEST(ContouredRectTest, circle) {
gfx::SizeF corner_radii(50, 50);
FloatRoundedRect r(gfx::RectF(0, 0, 100, 100), corner_radii, corner_radii,
corner_radii, corner_radii);
EXPECT_EQ(gfx::RectF(0, 0, 100, 100), r.Rect());
EXPECT_EQ(corner_radii, r.GetRadii().TopLeft());
EXPECT_EQ(corner_radii, r.GetRadii().TopRight());
EXPECT_EQ(corner_radii, r.GetRadii().BottomLeft());
EXPECT_EQ(corner_radii, r.GetRadii().BottomRight());
EXPECT_FALSE(r.GetRadii().IsZero());
EXPECT_TRUE(r.IsRounded());
EXPECT_FALSE(r.IsEmpty());
EXPECT_EQ(gfx::RectF(0, 0, 50, 50), r.TopLeftCorner());
EXPECT_EQ(gfx::RectF(50, 0, 50, 50), r.TopRightCorner());
EXPECT_EQ(gfx::RectF(0, 50, 50, 50), r.BottomLeftCorner());
EXPECT_EQ(gfx::RectF(50, 50, 50, 50), r.BottomRightCorner());
TEST_INTERCEPTS(r, 0, 50, 50);
TEST_INTERCEPTS(r, 25, 6.69873, 93.3013);
TEST_INTERCEPTS(r, 50, 0, 100);
TEST_INTERCEPTS(r, 75, 6.69873, 93.3013);
TEST_INTERCEPTS(r, 100, 50, 50);
float min_x_intercept;
float max_x_intercept;
EXPECT_FALSE(
ContouredRect(r).XInterceptsAtY(-1, min_x_intercept, max_x_intercept));
EXPECT_FALSE(
ContouredRect(r).XInterceptsAtY(101, min_x_intercept, max_x_intercept));
}
/*
* FloatRoundedRect geometry for this test. Corner radii are in parens, x and y
* intercepts for the elliptical corners are noted. The rectangle itself is at
* 0,0 with width and height 100.
*
* (10, 15) x=10 x=90 (10, 20)
* (--+---------+--)
* y=15 +--| |-+ y=20
* | |
* | |
* y=85 + -| |- + y=70
* (--+---------+--)
* (25, 15) x=25 x=80 (20, 30)
*/
TEST(ContouredRectTest, ellipticalCorners) {
FloatRoundedRect::Radii corner_radii;
corner_radii.SetTopLeft(gfx::SizeF(10, 15));
corner_radii.SetTopRight(gfx::SizeF(10, 20));
corner_radii.SetBottomLeft(gfx::SizeF(25, 15));
corner_radii.SetBottomRight(gfx::SizeF(20, 30));
FloatRoundedRect r(gfx::RectF(0, 0, 100, 100), corner_radii);
EXPECT_EQ(r.GetRadii(),
FloatRoundedRect::Radii(gfx::SizeF(10, 15), gfx::SizeF(10, 20),
gfx::SizeF(25, 15), gfx::SizeF(20, 30)));
EXPECT_EQ(r, FloatRoundedRect(gfx::RectF(0, 0, 100, 100), corner_radii));
EXPECT_EQ(gfx::RectF(0, 0, 10, 15), r.TopLeftCorner());
EXPECT_EQ(gfx::RectF(90, 0, 10, 20), r.TopRightCorner());
EXPECT_EQ(gfx::RectF(0, 85, 25, 15), r.BottomLeftCorner());
EXPECT_EQ(gfx::RectF(80, 70, 20, 30), r.BottomRightCorner());
TEST_INTERCEPTS(r, 5, 2.5464401, 96.61438);
TEST_INTERCEPTS(r, 15, 0, 99.682457);
TEST_INTERCEPTS(r, 20, 0, 100);
TEST_INTERCEPTS(r, 50, 0, 100);
TEST_INTERCEPTS(r, 70, 0, 100);
TEST_INTERCEPTS(r, 85, 0, 97.320511);
TEST_INTERCEPTS(r, 95, 6.3661003, 91.05542);
float min_x_intercept;
float max_x_intercept;
EXPECT_FALSE(
ContouredRect(r).XInterceptsAtY(-1, min_x_intercept, max_x_intercept));
EXPECT_FALSE(
ContouredRect(r).XInterceptsAtY(101, min_x_intercept, max_x_intercept));
}
TEST(ContouredRectTest, ToString) {
gfx::SizeF corner_rect(1, 2);
ContouredRect rect_with_curvature(
FloatRoundedRect(gfx::RectF(1, 3, 5, 7),
FloatRoundedRect::Radii(corner_rect, corner_rect,
corner_rect, corner_rect)),
ContouredRect::CornerCurvature(1, 0.2222, 0, 3000));
EXPECT_EQ(
"1,3 5x7 radii:(tl:1x2; tr:1x2; bl:1x2; br:1x2) curvature:(tl:1.00; "
"tr:0.22; bl:3000.00; br:0.00)",
rect_with_curvature.ToString());
}
} // namespace blink
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