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/*
* Copyright (C) 2021 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 PlatformXR {
using OpenXRProfileId = const char* const;
using OpenXRButtonPath = const char* const;
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
};
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();
}
}
struct OpenXRButton {
OpenXRButtonType type;
OpenXRButtonPath press { nullptr };
OpenXRButtonPath touch { nullptr };
OpenXRButtonPath value { nullptr };
};
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 OpenXRInputProfile {
const char* const path { nullptr };
std::span<const OpenXRProfileId> profileIds;
std::span<const OpenXRButton> leftButtons;
std::span<const OpenXRButton> rightButtons;
std::span<const OpenXRAxis> axes;
};
// https://github.com/immersive-web/webxr-input-profiles/blob/master/packages/registry/profiles/htc/htc-vive.json
constexpr std::array<OpenXRProfileId, 2> HTCViveProfileIds { "htc-vive", "generic-trigger-squeeze-touchpad" };
constexpr std::array<OpenXRButton, 3> HTCViveButtons {
OpenXRButton { .type = OpenXRButtonType::Trigger, .press = "/input/trigger/click", .value = "/input/trigger/value" },
OpenXRButton { .type = OpenXRButtonType::Squeeze, .press = "/input/squeeze/click" },
OpenXRButton { .type = OpenXRButtonType::Touchpad, .press = "/input/trackpad/click", .touch = "/input/trackpad/touch" }
};
constexpr std::array<OpenXRAxis, 1> HTCViveAxes {
{ { OpenXRAxisType::Touchpad, "/input/trackpad" } }
};
constexpr OpenXRInputProfile HTCViveInputProfile {
"/interaction_profiles/htc/vive_controller",
HTCViveProfileIds,
HTCViveButtons,
HTCViveButtons,
HTCViveAxes,
};
// Default fallback when there isn't a specific controller binding.
constexpr std::array<const char*, 1> KHRSimpleProfileIds { "generic-button" };
constexpr std::array<OpenXRButton, 1> KHRSimpleButtons {
OpenXRButton { .type = OpenXRButtonType::Trigger, .press = "/input/select/click" }
};
constexpr OpenXRInputProfile KHRSimpleInputProfile {
"/interaction_profiles/khr/simple_controller",
KHRSimpleProfileIds,
KHRSimpleButtons,
KHRSimpleButtons,
{ }
};
constexpr std::array<OpenXRInputProfile, 2> openXRInputProfiles { HTCViveInputProfile, KHRSimpleInputProfile };
} // namespace PlatformXR
#endif // ENABLE(WEBXR) && USE(OPENXR)
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