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// Copyright (C) 2022 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GPL-3.0-only
#include "qwasmevent.h"
QT_BEGIN_NAMESPACE
namespace KeyboardModifier
{
template <>
QFlags<Qt::KeyboardModifier> getForEvent<EmscriptenKeyboardEvent>(
const EmscriptenKeyboardEvent& event)
{
return internal::Helper<EmscriptenKeyboardEvent>::getModifierForEvent(event) |
(event.location == DOM_KEY_LOCATION_NUMPAD ? Qt::KeypadModifier : Qt::NoModifier);
}
} // namespace KeyboardModifier
Event::Event(EventType type, emscripten::val target) : type(type), target(target) { }
Event::~Event() = default;
Event::Event(const Event &other) = default;
Event::Event(Event &&other) = default;
Event &Event::operator=(const Event &other) = default;
Event &Event::operator=(Event &&other) = default;
MouseEvent::MouseEvent(EventType type, emscripten::val event) : Event(type, event["target"])
{
mouseButton = MouseEvent::buttonFromWeb(event["button"].as<int>());
mouseButtons = MouseEvent::buttonsFromWeb(event["buttons"].as<unsigned short>());
// The current button state (event.buttons) may be out of sync for some PointerDown
// events where the "down" state is very brief, for example taps on Apple trackpads.
// Qt expects that the current button state is in sync with the event, so we sync
// it up here.
if (type == EventType::PointerDown)
mouseButtons |= mouseButton;
localPoint = QPoint(event["offsetX"].as<int>(), event["offsetY"].as<int>());
pointInPage = QPoint(event["pageX"].as<int>(), event["pageY"].as<int>());
pointInViewport = QPoint(event["clientX"].as<int>(), event["clientY"].as<int>());
modifiers = KeyboardModifier::getForEvent(event);
}
MouseEvent::~MouseEvent() = default;
MouseEvent::MouseEvent(const MouseEvent &other) = default;
MouseEvent::MouseEvent(MouseEvent &&other) = default;
MouseEvent &MouseEvent::operator=(const MouseEvent &other) = default;
MouseEvent &MouseEvent::operator=(MouseEvent &&other) = default;
PointerEvent::PointerEvent(EventType type, emscripten::val event) : MouseEvent(type, event)
{
pointerId = event["pointerId"].as<int>();
pointerType = event["pointerType"].as<std::string>() == "mouse" ? PointerType::Mouse
: PointerType::Other;
}
PointerEvent::~PointerEvent() = default;
PointerEvent::PointerEvent(const PointerEvent &other) = default;
PointerEvent::PointerEvent(PointerEvent &&other) = default;
PointerEvent &PointerEvent::operator=(const PointerEvent &other) = default;
PointerEvent &PointerEvent::operator=(PointerEvent &&other) = default;
std::optional<PointerEvent> PointerEvent::fromWeb(emscripten::val event)
{
const auto eventType = ([&event]() -> std::optional<EventType> {
const auto eventTypeString = event["type"].as<std::string>();
if (eventTypeString == "pointermove")
return EventType::PointerMove;
else if (eventTypeString == "pointerup")
return EventType::PointerUp;
else if (eventTypeString == "pointerdown")
return EventType::PointerDown;
else if (eventTypeString == "pointerenter")
return EventType::PointerEnter;
else if (eventTypeString == "pointerleave")
return EventType::PointerLeave;
return std::nullopt;
})();
if (!eventType)
return std::nullopt;
return PointerEvent(*eventType, event);
}
DragEvent::DragEvent(EventType type, emscripten::val event)
: MouseEvent(type, event), dataTransfer(event["dataTransfer"])
{
dropAction = ([event]() {
const std::string effect = event["dataTransfer"]["dropEffect"].as<std::string>();
if (effect == "copy")
return Qt::CopyAction;
else if (effect == "move")
return Qt::MoveAction;
else if (effect == "link")
return Qt::LinkAction;
return Qt::IgnoreAction;
})();
}
DragEvent::~DragEvent() = default;
DragEvent::DragEvent(const DragEvent &other) = default;
DragEvent::DragEvent(DragEvent &&other) = default;
DragEvent &DragEvent::operator=(const DragEvent &other) = default;
DragEvent &DragEvent::operator=(DragEvent &&other) = default;
std::optional<DragEvent> DragEvent::fromWeb(emscripten::val event)
{
const auto eventType = ([&event]() -> std::optional<EventType> {
const auto eventTypeString = event["type"].as<std::string>();
if (eventTypeString == "drop")
return EventType::Drop;
return std::nullopt;
})();
if (!eventType)
return std::nullopt;
return DragEvent(*eventType, event);
}
WheelEvent::WheelEvent(EventType type, emscripten::val event) : MouseEvent(type, event)
{
deltaMode = ([event]() {
const int deltaMode = event["deltaMode"].as<int>();
const auto jsWheelEventType = emscripten::val::global("WheelEvent");
if (deltaMode == jsWheelEventType["DOM_DELTA_PIXEL"].as<int>())
return DeltaMode::Pixel;
else if (deltaMode == jsWheelEventType["DOM_DELTA_LINE"].as<int>())
return DeltaMode::Line;
return DeltaMode::Page;
})();
delta = QPoint(event["deltaX"].as<int>(), event["deltaY"].as<int>());
webkitDirectionInvertedFromDevice = event["webkitDirectionInvertedFromDevice"].as<bool>();
}
WheelEvent::~WheelEvent() = default;
WheelEvent::WheelEvent(const WheelEvent &other) = default;
WheelEvent::WheelEvent(WheelEvent &&other) = default;
WheelEvent &WheelEvent::operator=(const WheelEvent &other) = default;
WheelEvent &WheelEvent::operator=(WheelEvent &&other) = default;
std::optional<WheelEvent> WheelEvent::fromWeb(emscripten::val event)
{
const auto eventType = ([&event]() -> std::optional<EventType> {
const auto eventTypeString = event["type"].as<std::string>();
if (eventTypeString == "wheel")
return EventType::Wheel;
return std::nullopt;
})();
if (!eventType)
return std::nullopt;
return WheelEvent(*eventType, event);
}
QT_END_NAMESPACE
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