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// Copyright (C) 2018 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GPL-3.0-only
#ifndef QWASMCOMPOSITOR_H
#define QWASMCOMPOSITOR_H
#include "qwasmwindowstack.h"
#include <qpa/qplatformwindow.h>
#include <QMap>
#include <QtGui/qinputdevice.h>
#include <QtCore/private/qstdweb_p.h>
#include <QPointer>
#include <QPointingDevice>
#include <emscripten/html5.h>
#include <emscripten/emscripten.h>
#include <emscripten/bind.h>
QT_BEGIN_NAMESPACE
struct PointerEvent;
class QWasmWindow;
class QWasmScreen;
class QOpenGLContext;
class QOpenGLTexture;
class QWasmEventTranslator;
class QWasmCompositor final : public QObject
{
Q_OBJECT
public:
QWasmCompositor(QWasmScreen *screen);
~QWasmCompositor() final;
void initEventHandlers();
struct QWasmFrameOptions {
QRect rect;
int lineWidth;
QPalette palette;
};
void addWindow(QWasmWindow *window);
void removeWindow(QWasmWindow *window);
void setVisible(QWasmWindow *window, bool visible);
void raise(QWasmWindow *window);
void lower(QWasmWindow *window);
void onScreenDeleting();
QWindow *windowAt(QPoint globalPoint, int padding = 0) const;
QWindow *keyWindow() const;
QWasmScreen *screen();
enum UpdateRequestDeliveryType { ExposeEventDelivery, UpdateRequestDelivery };
void requestUpdateAllWindows();
void requestUpdateWindow(QWasmWindow *window, UpdateRequestDeliveryType updateType = ExposeEventDelivery);
void setCapture(QWasmWindow *window);
void releaseCapture();
void handleBackingStoreFlush(QWindow *window);
private:
void frame(bool all, const QList<QWasmWindow *> &windows);
void onTopWindowChanged();
void deregisterEventHandlers();
void destroy();
void requestUpdate();
void deliverUpdateRequests();
void deliverUpdateRequest(QWasmWindow *window, UpdateRequestDeliveryType updateType);
static int keyboard_cb(int eventType, const EmscriptenKeyboardEvent *keyEvent, void *userData);
static int touchCallback(int eventType, const EmscriptenTouchEvent *ev, void *userData);
bool processKeyboard(int eventType, const EmscriptenKeyboardEvent *keyEvent);
bool processTouch(int eventType, const EmscriptenTouchEvent *touchEvent);
void enterWindow(QWindow *window, const QPoint &localPoint, const QPoint &globalPoint);
void leaveWindow(QWindow *window);
void updateEnabledState();
QWasmWindowStack m_windowStack;
bool m_isEnabled = true;
QSize m_targetSize;
qreal m_targetDevicePixelRatio = 1;
QMap<QWasmWindow *, UpdateRequestDeliveryType> m_requestUpdateWindows;
bool m_requestUpdateAllWindows = false;
int m_requestAnimationFrameId = -1;
bool m_inDeliverUpdateRequest = false;
std::unique_ptr<QPointingDevice> m_touchDevice;
QMap <int, QPointF> m_pressedTouchIds;
std::unique_ptr<QWasmEventTranslator> m_eventTranslator;
};
QT_END_NAMESPACE
#endif
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