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// Copyright 2024 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef UI_DISPLAY_TEST_VIRTUAL_DISPLAY_UTIL_H_
#define UI_DISPLAY_TEST_VIRTUAL_DISPLAY_UTIL_H_
#include <memory>
#include "ui/display/display_observer.h"
#include "ui/gfx/geometry/size.h"
#include "ui/gfx/geometry/vector2d.h"
namespace display {
class Screen;
namespace test {
struct DISPLAY_EXPORT DisplayParams {
gfx::Size resolution;
gfx::Vector2d dpi = gfx::Vector2d(96, 96);
std::string description;
};
bool constexpr operator<(const display::test::DisplayParams& a,
const display::test::DisplayParams& b) {
return std::tuple(a.resolution.width(), a.resolution.height(), a.dpi.x(),
a.dpi.y(), a.description) <
std::tuple(b.resolution.width(), b.resolution.height(), b.dpi.x(),
b.dpi.y(), b.description);
}
bool constexpr operator==(const display::test::DisplayParams& a,
const display::test::DisplayParams& b) {
return a.resolution == b.resolution && a.dpi == b.dpi &&
a.description == b.description;
}
// This interface creates system-level virtual displays to support the automated
// integration testing of display information and window management APIs in
// multi-screen device environments. It updates displays that display::Screen
// impl sees, but is generally not compatible with `TestScreen` subclasses.
class VirtualDisplayUtil {
public:
virtual ~VirtualDisplayUtil() = default;
// Creates an instance for the current platform if available. Returns nullptr
// on unsupported platforms (i.e. not implemented, or host is missing
// requirements).
static std::unique_ptr<VirtualDisplayUtil> TryCreate(Screen* screen);
// Adds a virtual display and returns the generated display::Display id, which
// can be used with the Screen instance or passed to `RemoveDisplay`.
virtual int64_t AddDisplay(const DisplayParams& display_params) = 0;
// Remove a virtual display corresponding to the specified display ID.
virtual void RemoveDisplay(int64_t display_id) = 0;
// Remove all added virtual displays.
virtual void ResetDisplays() = 0;
// Supported Display configurations.
static constexpr DisplayParams k1920x1080 = {gfx::Size(1920, 1080)};
static constexpr DisplayParams k1024x768 = {gfx::Size(1024, 768)};
};
} // namespace test
} // namespace display
#endif // UI_DISPLAY_TEST_VIRTUAL_DISPLAY_UTIL_H_
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