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// Copyright 2020 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/wm/core/cursor_loader.h"
#include <optional>
#include "base/memory/scoped_refptr.h"
#include "testing/gtest/include/gtest/gtest.h"
#include "third_party/skia/include/core/SkBitmap.h"
#include "third_party/skia/include/core/SkColor.h"
#include "ui/aura/client/cursor_shape_client.h"
#include "ui/base/cursor/cursor.h"
#include "ui/base/cursor/cursor_factory.h"
#include "ui/base/cursor/cursor_size.h"
#include "ui/base/cursor/mojom/cursor_type.mojom-shared.h"
#include "ui/base/cursor/platform_cursor.h"
#include "ui/base/resource/resource_scale_factor.h"
#include "ui/display/display.h"
#include "ui/gfx/geometry/point.h"
#include "ui/gfx/image/image_unittest_util.h"
#include "ui/gfx/skia_util.h"
#include "ui/wm/core/cursor_util.h"
namespace wm {
using ::ui::mojom::CursorType;
TEST(CursorLoaderTest, InvisibleCursor) {
CursorLoader cursor_loader;
ui::Cursor invisible_cursor(CursorType::kNone);
cursor_loader.SetPlatformCursor(&invisible_cursor);
EXPECT_EQ(
invisible_cursor.platform(),
ui::CursorFactory::GetInstance()->GetDefaultCursor(CursorType::kNone));
}
TEST(CursorLoaderTest, GetCursorDataForDefaultCursors) {
// Make sure we always use the fallback cursors, so the test works the same
// in all platforms.
CursorLoader cursor_loader(/*use_platform_cursors=*/false);
display::Display display = display::Display::GetDefaultDisplay();
for (const float scale : {0.8f, 1.0f, 1.25f, 1.5f, 2.0f, 3.0f}) {
SCOPED_TRACE(testing::Message() << "scale " << scale);
display.set_device_scale_factor(scale);
cursor_loader.SetDisplay(display);
const float resource_scale = ui::GetScaleForResourceScaleFactor(
ui::GetSupportedResourceScaleFactor(scale));
for (const ui::CursorSize cursor_size :
{ui::CursorSize::kNormal, ui::CursorSize::kLarge}) {
SCOPED_TRACE(testing::Message()
<< "size " << static_cast<int>(cursor_size));
cursor_loader.SetSize(cursor_size);
const ui::Cursor invisible_cursor = CursorType::kNone;
std::optional<ui::CursorData> cursor_loader_data =
cursor_loader.GetCursorData(invisible_cursor);
ASSERT_TRUE(cursor_loader_data);
EXPECT_TRUE(cursor_loader_data->bitmaps[0].isNull());
EXPECT_TRUE(cursor_loader_data->hotspot.IsOrigin());
for (const ui::Cursor cursor :
{CursorType::kPointer, CursorType::kWait}) {
SCOPED_TRACE(cursor.type());
for (const SkColor cursor_color :
{ui::kDefaultCursorColor, SK_ColorRED, SK_ColorGREEN}) {
SCOPED_TRACE(testing::Message()
<< "color " << static_cast<int>(cursor_color));
cursor_loader.SetColor(cursor_color);
cursor_loader_data = cursor_loader.GetCursorData(cursor);
ASSERT_TRUE(cursor_loader_data);
// `cursor_loader.large_cursor_size_in_dip()` only takes into effect
// when cursor size is large.
auto target_cursor_size_in_px =
cursor_size == ui::CursorSize::kNormal
? std::nullopt
: std::make_optional(
cursor_loader.large_cursor_size_in_dip() * scale);
const auto cursor_data = GetCursorData(
cursor.type(), cursor_size, resource_scale,
target_cursor_size_in_px, display.panel_rotation(), cursor_color);
ASSERT_TRUE(cursor_data);
ASSERT_EQ(cursor_loader_data->bitmaps.size(),
cursor_data->bitmaps.size());
for (size_t i = 0; i < cursor_data->bitmaps.size(); i++) {
ASSERT_TRUE(gfx::BitmapsAreEqual(cursor_loader_data->bitmaps[i],
cursor_data->bitmaps[i]));
}
EXPECT_EQ(cursor_loader_data->hotspot, cursor_data->hotspot);
}
}
}
}
}
TEST(CursorLoaderTest, GetCursorDataForCustomCursors) {
CursorLoader cursor_loader(/*use_platform_cursors=*/false);
static constexpr int large_cursor_size_in_dip = 50;
cursor_loader.SetLargeCursorSizeInDip(large_cursor_size_in_dip);
display::Display display = display::Display::GetDefaultDisplay();
for (const float scale : {0.8f, 1.0f, 1.25f, 1.5f, 2.0f, 3.0f}) {
SCOPED_TRACE(testing::Message() << "scale " << scale);
display.set_device_scale_factor(scale);
cursor_loader.SetDisplay(display);
for (const ui::CursorSize cursor_size :
{ui::CursorSize::kNormal, ui::CursorSize::kLarge}) {
SCOPED_TRACE(testing::Message()
<< "size " << static_cast<int>(cursor_size));
cursor_loader.SetSize(cursor_size);
// Custom cursor.
const SkBitmap custom_bitmap = gfx::test::CreateBitmap(50, 50);
static constexpr gfx::Point custom_hotspot = gfx::Point(10, 10);
static constexpr float custom_scale = 2.0f;
const ui::Cursor custom_cursor =
ui::Cursor::NewCustom(custom_bitmap, custom_hotspot, custom_scale);
// The bitmap pixels of a custom cursor will only update if
// (1) the cursor size is large cursor and needs to be scaled,
// (2) the cursor color is changed to a non-default value.
if (cursor_size == ui::CursorSize::kNormal ||
(cursor_size == ui::CursorSize::kLarge &&
static_cast<int>(large_cursor_size_in_dip * scale) ==
custom_bitmap.dimensions().height())) {
// Cursor doesn't need to be scaled.
cursor_loader.SetColor(ui::kDefaultCursorColor);
std::optional<ui::CursorData> cursor_data =
cursor_loader.GetCursorData(custom_cursor);
ASSERT_TRUE(cursor_data);
// Bitmap pixels won't update since the cursor color is the default
// value.
EXPECT_EQ(cursor_data->bitmaps[0].getGenerationID(),
custom_bitmap.getGenerationID());
EXPECT_EQ(cursor_data->hotspot, custom_hotspot);
cursor_loader.SetColor(SK_ColorRED);
cursor_data = cursor_loader.GetCursorData(custom_cursor);
ASSERT_TRUE(cursor_data);
// Bitmap pixels should update since the cursor color is changed.
EXPECT_NE(cursor_data->bitmaps[0].getGenerationID(),
custom_bitmap.getGenerationID());
EXPECT_EQ(cursor_data->hotspot, custom_hotspot);
} else {
// Cursor needs to be scaled.
cursor_loader.SetColor(ui::kDefaultCursorColor);
std::optional<ui::CursorData> cursor_data =
cursor_loader.GetCursorData(custom_cursor);
ASSERT_TRUE(cursor_data);
int large_cursor_size_in_px = large_cursor_size_in_dip * scale;
float rescale = static_cast<float>(large_cursor_size_in_px) /
static_cast<float>(custom_bitmap.dimensions().height());
EXPECT_EQ(cursor_data->bitmaps[0].dimensions().height(),
large_cursor_size_in_px);
EXPECT_EQ(cursor_data->hotspot,
gfx::ScaleToFlooredPoint(custom_hotspot, rescale));
}
}
}
}
// Test the cursor image cache when fallbacks for system cursors are used.
TEST(CursorLoaderTest, ImageCursorCache) {
display::Display display = display::Display::GetDefaultDisplay();
CursorLoader cursor_loader(/*use_platform_cursors=*/false);
cursor_loader.SetDisplay(display);
ui::Cursor cursor(CursorType::kPointer);
cursor_loader.SetPlatformCursor(&cursor);
// CursorLoader should keep a ref in its cursor cache.
auto platform_cursor = cursor.platform();
cursor.SetPlatformCursor(nullptr);
EXPECT_FALSE(platform_cursor->HasOneRef());
// Invalidate the cursor cache by changing the rotation.
display.set_panel_rotation(display::Display::ROTATE_90);
cursor_loader.SetDisplay(display);
EXPECT_TRUE(platform_cursor->HasOneRef());
// Invalidate the cursor cache by changing the scale.
cursor_loader.SetPlatformCursor(&cursor);
platform_cursor = cursor.platform();
cursor.SetPlatformCursor(nullptr);
EXPECT_FALSE(platform_cursor->HasOneRef());
display.set_device_scale_factor(display.device_scale_factor() * 2);
cursor_loader.SetDisplay(display);
EXPECT_TRUE(platform_cursor->HasOneRef());
}
} // namespace wm
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