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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/gfx/geometry/rect_conversions.h"
#include <limits>
#include "testing/gtest/include/gtest/gtest.h"
namespace gfx {
constexpr int kMaxInt = std::numeric_limits<int>::max();
constexpr int kMinInt = std::numeric_limits<int>::min();
constexpr float kMaxFloat = std::numeric_limits<float>::max();
constexpr float kEpsilonFloat = std::numeric_limits<float>::epsilon();
constexpr float kMaxIntF = static_cast<float>(kMaxInt);
constexpr float kMinIntF = static_cast<float>(kMinInt);
TEST(RectConversionsTest, ToEnclosedRect) {
EXPECT_EQ(Rect(), ToEnclosedRect(RectF()));
EXPECT_EQ(Rect(-1, -1, 2, 2),
ToEnclosedRect(RectF(-1.5f, -1.5f, 3.0f, 3.0f)));
EXPECT_EQ(Rect(-1, -1, 3, 3),
ToEnclosedRect(RectF(-1.5f, -1.5f, 3.5f, 3.5f)));
EXPECT_EQ(Rect(kMaxInt, kMaxInt, 0, 0),
ToEnclosedRect(RectF(kMaxFloat, kMaxFloat, 2.0f, 2.0f)));
EXPECT_EQ(Rect(0, 0, kMaxInt, kMaxInt),
ToEnclosedRect(RectF(0.0f, 0.0f, kMaxFloat, kMaxFloat)));
EXPECT_EQ(Rect(20001, 20001, 0, 0),
ToEnclosedRect(RectF(20000.5f, 20000.5f, 0.5f, 0.5f)));
EXPECT_EQ(Rect(kMaxInt, kMaxInt, 0, 0),
ToEnclosedRect(RectF(kMaxIntF, kMaxIntF, kMaxIntF, kMaxIntF)));
EXPECT_EQ(Rect(2, 3, 5, 5),
ToEnclosedRect(RectF(1.9999f, 2.0002f, 5.9998f, 6.0001f)));
EXPECT_EQ(Rect(2, 3, 6, 4),
ToEnclosedRect(RectF(1.9999f, 2.0001f, 6.0002f, 5.9998f)));
EXPECT_EQ(Rect(2, 3, 5, 5),
ToEnclosedRect(RectF(1.9998f, 2.0002f, 6.0001f, 5.9999f)));
}
TEST(RectConversionsTest, ToEnclosedRectHugeRectF) {
RectF source(kMinIntF, kMinIntF, kMaxIntF * 3.f, kMaxIntF * 3.f);
Rect enclosed = ToEnclosedRect(source);
// That rect can't be represented, but it should be big.
EXPECT_EQ(kMaxInt, enclosed.width());
EXPECT_EQ(kMaxInt, enclosed.height());
// It should include some axis near the global origin.
EXPECT_GT(1, enclosed.x());
EXPECT_GT(1, enclosed.y());
// And it should not cause computation issues for itself.
EXPECT_LT(0, enclosed.right());
EXPECT_LT(0, enclosed.bottom());
}
TEST(RectConversionsTest, ToEnclosingRect) {
EXPECT_EQ(Rect(), ToEnclosingRect(RectF()));
EXPECT_EQ(Rect(5, 5, 0, 0), ToEnclosingRect(RectF(5.5f, 5.5f, 0.0f, 0.0f)));
EXPECT_EQ(Rect(3, 2, 0, 0),
ToEnclosingRect(RectF(3.5f, 2.5f, kEpsilonFloat, -0.0f)));
EXPECT_EQ(Rect(3, 2, 0, 1), ToEnclosingRect(RectF(3.5f, 2.5f, 0.f, 0.001f)));
EXPECT_EQ(Rect(-2, -2, 4, 4),
ToEnclosingRect(RectF(-1.5f, -1.5f, 3.0f, 3.0f)));
EXPECT_EQ(Rect(-2, -2, 4, 4),
ToEnclosingRect(RectF(-1.5f, -1.5f, 3.5f, 3.5f)));
EXPECT_EQ(Rect(kMaxInt, kMaxInt, 0, 0),
ToEnclosingRect(RectF(kMaxFloat, kMaxFloat, 2.0f, 2.0f)));
EXPECT_EQ(Rect(0, 0, kMaxInt, kMaxInt),
ToEnclosingRect(RectF(0.0f, 0.0f, kMaxFloat, kMaxFloat)));
EXPECT_EQ(Rect(20000, 20000, 1, 1),
ToEnclosingRect(RectF(20000.5f, 20000.5f, 0.5f, 0.5f)));
EXPECT_EQ(Rect(kMaxInt, kMaxInt, 0, 0),
ToEnclosingRect(RectF(kMaxIntF, kMaxIntF, kMaxIntF, kMaxIntF)));
EXPECT_EQ(Rect(-1, -1, 22777713, 2),
ToEnclosingRect(RectF(-0.5f, -0.5f, 22777712.f, 1.f)));
EXPECT_EQ(Rect(1, 2, 7, 7),
ToEnclosingRect(RectF(1.9999f, 2.0002f, 5.9998f, 6.0001f)));
EXPECT_EQ(Rect(1, 2, 8, 6),
ToEnclosingRect(RectF(1.9999f, 2.0001f, 6.0002f, 5.9998f)));
EXPECT_EQ(Rect(1, 2, 7, 7),
ToEnclosingRect(RectF(1.9998f, 2.0002f, 6.0001f, 5.9999f)));
}
TEST(RectConversionsTest, ToEnclosingRectHugeRectF) {
RectF source(kMinIntF, kMinIntF, kMaxIntF * 3.f, kMaxIntF * 3.f);
Rect enclosing = ToEnclosingRect(source);
// That rect can't be represented, but it should be big.
EXPECT_EQ(kMaxInt, enclosing.width());
EXPECT_EQ(kMaxInt, enclosing.height());
// It should include some axis near the global origin.
EXPECT_GT(1, enclosing.x());
EXPECT_GT(1, enclosing.y());
// And it should cause computation issues for itself.
EXPECT_LT(0, enclosing.right());
EXPECT_LT(0, enclosing.bottom());
}
TEST(RectConversionsTest, ToEnclosingRectIgnoringError) {
static constexpr float kError = 0.001f;
EXPECT_EQ(Rect(), ToEnclosingRectIgnoringError(RectF(), kError));
EXPECT_EQ(Rect(5, 5, 0, 0), ToEnclosingRectIgnoringError(
RectF(5.5f, 5.5f, 0.0f, 0.0f), kError));
EXPECT_EQ(Rect(3, 2, 0, 0),
ToEnclosingRectIgnoringError(
RectF(3.5f, 2.5f, kEpsilonFloat, -0.0f), kError));
EXPECT_EQ(Rect(3, 2, 0, 1), ToEnclosingRectIgnoringError(
RectF(3.5f, 2.5f, 0.f, 0.001f), kError));
EXPECT_EQ(Rect(-2, -2, 4, 4), ToEnclosingRectIgnoringError(
RectF(-1.5f, -1.5f, 3.0f, 3.0f), kError));
EXPECT_EQ(Rect(-2, -2, 4, 4), ToEnclosingRectIgnoringError(
RectF(-1.5f, -1.5f, 3.5f, 3.5f), kError));
EXPECT_EQ(Rect(kMaxInt, kMaxInt, 0, 0),
ToEnclosingRectIgnoringError(
RectF(kMaxFloat, kMaxFloat, 2.0f, 2.0f), kError));
EXPECT_EQ(Rect(0, 0, kMaxInt, kMaxInt),
ToEnclosingRectIgnoringError(
RectF(0.0f, 0.0f, kMaxFloat, kMaxFloat), kError));
EXPECT_EQ(Rect(20000, 20000, 1, 1),
ToEnclosingRectIgnoringError(RectF(20000.5f, 20000.5f, 0.5f, 0.5f),
kError));
EXPECT_EQ(Rect(kMaxInt, kMaxInt, 0, 0),
ToEnclosingRectIgnoringError(
RectF(kMaxIntF, kMaxIntF, kMaxIntF, kMaxIntF), kError));
EXPECT_EQ(Rect(-1, -1, 22777713, 2),
ToEnclosingRectIgnoringError(RectF(-0.5f, -0.5f, 22777712.f, 1.f),
kError));
EXPECT_EQ(Rect(2, 2, 6, 6),
ToEnclosingRectIgnoringError(
RectF(1.9999f, 2.0002f, 5.9998f, 6.0001f), kError));
EXPECT_EQ(Rect(2, 2, 6, 6),
ToEnclosingRectIgnoringError(
RectF(1.9999f, 2.0001f, 6.0002f, 5.9998f), kError));
EXPECT_EQ(Rect(2, 2, 6, 6),
ToEnclosingRectIgnoringError(
RectF(1.9998f, 2.0002f, 6.0001f, 5.9999f), kError));
}
TEST(RectConversionsTest, ToNearestRect) {
Rect rect;
EXPECT_EQ(rect, ToNearestRect(RectF(rect)));
rect = Rect(-1, -1, 3, 3);
EXPECT_EQ(rect, ToNearestRect(RectF(rect)));
RectF rectf(-1.00001f, -0.999999f, 3.0000001f, 2.999999f);
EXPECT_EQ(rect, ToNearestRect(rectf));
}
TEST(RectConversionsTest, ToFlooredRect) {
EXPECT_EQ(Rect(), ToFlooredRectDeprecated(RectF()));
EXPECT_EQ(Rect(-2, -2, 3, 3),
ToFlooredRectDeprecated(RectF(-1.5f, -1.5f, 3.0f, 3.0f)));
EXPECT_EQ(Rect(-2, -2, 3, 3),
ToFlooredRectDeprecated(RectF(-1.5f, -1.5f, 3.5f, 3.5f)));
EXPECT_EQ(Rect(20000, 20000, 0, 0),
ToFlooredRectDeprecated(RectF(20000.5f, 20000.5f, 0.5f, 0.5f)));
}
} // namespace gfx
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