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/*
* Copyright (C) 2025 Igalia, S.L.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public License
* aint with this library; see the file COPYING.LIB. If not, write to
* the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
* Boston, MA 02110-1301, USA.
*/
#pragma once
#if ENABLE(WEBXR) && USE(OPENXR)
#include <array>
#include <wtf/text/WTFString.h>
namespace WebKit {
using OpenXRProfileId = ASCIILiteral;
using OpenXRButtonPath = ASCIILiteral;
enum class OpenXRButtonType {
Trigger,
Squeeze,
Touchpad,
Thumbstick,
Thumbrest,
ButtonA,
ButtonB
};
constexpr std::array<OpenXRButtonType, 7> openXRButtonTypes {
OpenXRButtonType::Trigger, OpenXRButtonType::Squeeze, OpenXRButtonType::Touchpad, OpenXRButtonType::Thumbstick, OpenXRButtonType::Thumbrest,
OpenXRButtonType::ButtonA, OpenXRButtonType::ButtonB
};
constexpr ASCIILiteral s_pathSelect { "/input/select"_s };
constexpr ASCIILiteral s_pathPinchExt { "/input/pinch_ext"_s };
constexpr ASCIILiteral s_pathGraspExt { "/input/grasp_ext"_s };
constexpr ASCIILiteral s_pathActionClick { "/click"_s };
constexpr ASCIILiteral s_pathActionTouch { "/touch"_s };
constexpr ASCIILiteral s_pathActionValue { "/value"_s };
inline String buttonTypeToString(OpenXRButtonType type)
{
switch (type) {
case OpenXRButtonType::Trigger: return "trigger"_s;
case OpenXRButtonType::Squeeze: return "squeeze"_s;
case OpenXRButtonType::Touchpad: return "touchpad"_s;
case OpenXRButtonType::Thumbstick: return "thumbstick"_s;
case OpenXRButtonType::Thumbrest: return "thumbrest"_s;
case OpenXRButtonType::ButtonA: return "buttona"_s;
case OpenXRButtonType::ButtonB: return "buttonb"_s;
default:
ASSERT_NOT_REACHED();
return emptyString();
}
}
enum OpenXRButtonFlags {
Click = 1u << 0,
Touch = 1u << 1,
Value = 1u << 2,
};
enum class OpenXRHandFlags {
Left = 1u << 0,
Right = 1u << 1,
Both = Left | Right
};
struct OpenXRButton {
OpenXRButtonType type;
OpenXRButtonPath path;
OpenXRButtonFlags flags;
OpenXRHandFlags hand;
};
enum class OpenXRAxisType {
Touchpad,
Thumbstick
};
constexpr std::array<OpenXRAxisType, 2> openXRAxisTypes {
OpenXRAxisType::Touchpad, OpenXRAxisType::Thumbstick
};
inline String axisTypetoString(OpenXRAxisType type)
{
switch (type) {
case OpenXRAxisType::Touchpad: return "touchpad"_s;
case OpenXRAxisType::Thumbstick: return "thumbstick"_s;
default:
ASSERT_NOT_REACHED();
return emptyString();
}
}
struct OpenXRAxis {
OpenXRAxisType type;
OpenXRButtonPath path;
};
struct OpenXRInteractionProfile {
const ASCIILiteral path;
std::span<const OpenXRProfileId> profileIds;
std::span<const OpenXRButton> buttons;
std::span<const OpenXRAxis> axes;
};
constexpr ASCIILiteral handInteractionProfileName { "/interaction_profiles/ext/hand_interaction_ext"_s };
constexpr std::array<OpenXRProfileId, 3> handInteractionProfileIds { "generic-hand-select-grasp", "generic-hand-select", "generic-hand" };
constexpr std::array<OpenXRButton, 2> handInteractionProfileButtons {
OpenXRButton { .type = OpenXRButtonType::Trigger, .path = s_pathPinchExt, .flags = OpenXRButtonFlags::Value, .hand = OpenXRHandFlags::Both },
OpenXRButton { .type = OpenXRButtonType::Squeeze, .path = s_pathGraspExt, .flags = OpenXRButtonFlags::Value, .hand = OpenXRHandFlags::Both },
};
constexpr OpenXRInteractionProfile handInteractionProfile {
handInteractionProfileName,
handInteractionProfileIds,
handInteractionProfileButtons,
{ }
};
// Default fallback when there isn't a specific controller binding.
constexpr ASCIILiteral khrSimpleControllerName { "/interaction_profiles/khr/simple_controller"_s };
constexpr std::array<ASCIILiteral, 1> khrSimpleProfileIds { "generic-button"_s };
constexpr std::array<OpenXRButton, 1> khrSimpleButtons {
OpenXRButton { .type = OpenXRButtonType::Trigger, .path = s_pathSelect, .flags = OpenXRButtonFlags::Click, .hand = OpenXRHandFlags::Both }
};
constexpr OpenXRInteractionProfile khrSimpleControllerProfile {
khrSimpleControllerName,
khrSimpleProfileIds,
khrSimpleButtons,
{ }
};
constexpr std::array<OpenXRInteractionProfile, 2> openXRInteractionProfiles { handInteractionProfile, khrSimpleControllerProfile };
} // namespace WebKit
#endif // ENABLE(WEBXR) && USE(OPENXR)
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