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// Copyright 2023 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/base/x/x11_display_util.h"
#include "testing/gtest/include/gtest/gtest.h"
namespace ui {
struct DisplayGeometryTestData {
gfx::Rect bounds_px;
float scale;
gfx::Rect expected_bounds_dip;
};
namespace {
void ConvertDisplayBoundsToDipsHelper(
std::vector<DisplayGeometryTestData> test_data,
size_t primary_display_index) {
const size_t n = test_data.size();
ASSERT_LT(primary_display_index, n);
std::vector<display::Display> displays;
for (size_t i = 0; i < n; i++) {
displays.emplace_back(i, test_data[i].bounds_px);
displays[i].set_device_scale_factor(test_data[i].scale);
}
ConvertDisplayBoundsToDips(&displays, primary_display_index);
for (size_t i = 0; i < n; i++) {
EXPECT_EQ(displays[i].bounds(), test_data[i].expected_bounds_dip);
}
}
} // namespace
TEST(X11DisplayUtilTest, RangeDistance) {
// Adjacent ranges.
EXPECT_EQ(RangeDistance(10, 20, 20, 30), 0);
EXPECT_EQ(RangeDistance(20, 10, 30, 20), 0);
// Separated ranges.
EXPECT_EQ(RangeDistance(10, 20, 30, 40), 10);
EXPECT_EQ(RangeDistance(30, 40, 10, 20), 10);
// Partially overlapping ranges.
EXPECT_EQ(RangeDistance(10, 30, 20, 30), -10);
EXPECT_EQ(RangeDistance(20, 30, 10, 30), -10);
// Fully overlapping ranges.
EXPECT_EQ(RangeDistance(10, 40, 20, 30), -20);
EXPECT_EQ(RangeDistance(20, 30, 10, 40), -20);
}
TEST(X11DisplayUtilTest, RectDistance) {
// Rects meeting at a corner have distance {0, 0}.
EXPECT_EQ(RectDistance({10, 10, 10, 10}, {20, 20, 10, 10}),
std::make_pair(0, 0));
// Adjacent rects have a distance of {0, x}.
EXPECT_EQ(RectDistance({10, 10, 10, 10}, {20, 10, 10, 10}),
std::make_pair(0, -10));
EXPECT_EQ(RectDistance({20, 10, 10, 10}, {10, 10, 10, 10}),
std::make_pair(0, -10));
EXPECT_EQ(RectDistance({10, 10, 10, 10}, {10, 20, 10, 10}),
std::make_pair(0, -10));
EXPECT_EQ(RectDistance({10, 20, 10, 10}, {10, 10, 10, 10}),
std::make_pair(0, -10));
// Identical rects have a distance of {-min(w, h), -max(w, h)}.
EXPECT_EQ(RectDistance({0, 0, 10, 20}, {0, 0, 10, 20}),
std::make_pair(-10, -20));
EXPECT_EQ(RectDistance({0, 0, 20, 10}, {0, 0, 20, 10}),
std::make_pair(-10, -20));
// Separated rects have a positive distance.
EXPECT_EQ(RectDistance({10, 10, 10, 10}, {30, 10, 10, 10}),
std::make_pair(10, -10));
EXPECT_EQ(RectDistance({30, 10, 10, 10}, {10, 10, 10, 10}),
std::make_pair(10, -10));
}
TEST(X11DisplayUtilTest, ConvertDisplayBoundsToDips) {
// Single display
ConvertDisplayBoundsToDipsHelper(
{{{0, 0, 1000, 1000}, 1.0f, {0, 0, 1000, 1000}}}, 0);
ConvertDisplayBoundsToDipsHelper(
{{{0, 0, 1000, 1000}, 2.0f, {0, 0, 500, 500}}}, 0);
ConvertDisplayBoundsToDipsHelper(
{{{0, 0, 1000, 1000}, 0.5f, {0, 0, 2000, 2000}}}, 0);
// Displays should be positioned relative to the primary display.
ConvertDisplayBoundsToDipsHelper(
{{{1000, 1000, 1000, 1000}, 1.0f, {1000, 1000, 1000, 1000}}}, 0);
ConvertDisplayBoundsToDipsHelper(
{{{1000, 1000, 1000, 1000}, 2.0f, {500, 500, 500, 500}}}, 0);
// If all displays have the same scale factor, each display's bounds should
// be scaled directly...
ConvertDisplayBoundsToDipsHelper(
{
{{0, 0, 1000, 1000}, 1.0f, {0, 0, 1000, 1000}},
{{1000, 0, 1000, 1000}, 1.0f, {1000, 0, 1000, 1000}},
},
0);
ConvertDisplayBoundsToDipsHelper(
{
{{0, 0, 1000, 1000}, 2.0f, {0, 0, 500, 500}},
{{1000, 0, 1000, 1000}, 2.0f, {500, 0, 500, 500}},
},
0);
ConvertDisplayBoundsToDipsHelper(
{
{{0, 0, 2000, 1000}, 0.5f, {0, 0, 4000, 2000}},
{{2000, 1000, 3000, 2000}, 0.5f, {4000, 2000, 6000, 4000}},
{{5000, 2000, 4000, 3000}, 0.5f, {10000, 4000, 8000, 6000}},
},
0);
// ... even in odd cases like overlapping displays, duplicated displays, or
// "floating island" displays.
ConvertDisplayBoundsToDipsHelper(
{
{{0, 0, 1000, 1000}, 2.0f, {0, 0, 500, 500}},
{{0, 0, 1000, 1000}, 2.0f, {0, 0, 500, 500}},
{{1000000, 1000000, 1000, 1000}, 2.0f, {500000, 500000, 500, 500}},
{{0, 500, 1000, 1000}, 2.0f, {0, 250, 500, 500}},
{{-1000, -1000, 1000, 1000}, 2.0f, {-500, -500, 500, 500}},
},
0);
// Finally, test mixed scale factors. The mapping from pixels to DIPs should
// be continuous as long as there are no inconsistencies (eg. overlapping
// displays with different scale factors).
ConvertDisplayBoundsToDipsHelper(
{
{{0, 0, 1000, 2000}, 2.0f, {0, 0, 500, 1000}},
{{1000, 500, 2000, 1000}, 1.0f, {500, 0, 2000, 1000}},
{{3000, 0, 1000, 2000}, 2.0f, {2500, 0, 500, 1000}},
},
0);
ConvertDisplayBoundsToDipsHelper(
{
{{3000, 0, 1000, 2000}, 2.0f, {2500, 0, 500, 1000}},
{{1000, 500, 2000, 1000}, 1.0f, {500, 0, 2000, 1000}},
{{0, 0, 1000, 2000}, 2.0f, {0, 0, 500, 1000}},
},
2);
ConvertDisplayBoundsToDipsHelper(
{
{{0, 0, 1000, 2000}, 2.0f, {-1000, 0, 500, 1000}},
{{1000, 500, 2000, 1000}, 1.0f, {-500, 0, 2000, 1000}},
{{3000, 0, 1000, 2000}, 2.0f, {1500, 0, 500, 1000}},
},
2);
ConvertDisplayBoundsToDipsHelper(
{
{{0, 0, 1000, 1000}, 1.0f, {0, 0, 1000, 1000}},
{{1000, 0, 100, 100}, 2.0f, {1000, 25, 50, 50}},
{{0, 1000, 100, 100}, 2.0f, {25, 1000, 50, 50}},
},
0);
}
} // namespace ui
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