WebAssembly for QtBase

This is the squashed diff from wip/webassembly to dev.

Done-with: Peng Wu <peng.wu@intopalo.com>
Done-with: Sami Enne <sami.enne@intopalo.com>
Done-with: Morten Johan Sørvig <morten.sorvig@qt.io>
Started-by: Andrew Knight <andrew.knight@intopalo.com>
Change-Id: I6562433c0a38d6ec49ab675e0f104f2665f3392d
Reviewed-by: Lorn Potter <lorn.potter@gmail.com>
Reviewed-by: Eskil Abrahamsen Blomfeldt <eskil.abrahamsen-blomfeldt@qt.io>

1 files changed, 92 insertions, 0 deletions

diff --git a/src/plugins/platforms/wasm/qwasmintegration.h b/src/plugins/platforms/wasm/qwasmintegration.h
new file mode 100644
index 0000000000..ebc3d9d431
--- /dev/null
+++ b/src/plugins/platforms/wasm/qwasmintegration.h
@@ -0,0 +1,92 @@
+/****************************************************************************
+**
+** Copyright (C) 2018 The Qt Company Ltd.
+** Contact: https://www.qt.io/licensing/
+**
+** This file is part of the plugins of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:GPL$
+** Commercial License Usage
+** Licensees holding valid commercial Qt licenses may use this file in
+** accordance with the commercial license agreement provided with the
+** Software or, alternatively, in accordance with the terms contained in
+** a written agreement between you and The Qt Company. For licensing terms
+** and conditions see https://www.qt.io/terms-conditions. For further
+** information use the contact form at https://www.qt.io/contact-us.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 3 or (at your option) any later version
+** approved by the KDE Free Qt Foundation. The licenses are as published by
+** the Free Software Foundation and appearing in the file LICENSE.GPL3
+** included in the packaging of this file. Please review the following
+** information to ensure the GNU General Public License requirements will
+** be met: https://www.gnu.org/licenses/gpl-3.0.html.
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef QWASMINTEGRATION_H
+#define QWASMINTEGRATION_H
+
+#include "qwasmwindow.h"
+
+#include <qpa/qplatformintegration.h>
+#include <qpa/qplatformscreen.h>
+
+#include <QtCore/qhash.h>
+
+#include <emscripten.h>
+#include <emscripten/html5.h>
+
+QT_BEGIN_NAMESPACE
+
+class QWasmEventTranslator;
+class QWasmFontDatabase;
+class QWasmWindow;
+class QWasmEventDispatcher;
+class QWasmScreen;
+class QWasmCompositor;
+class QWasmBackingStore;
+
+class QWasmIntegration : public QObject, public QPlatformIntegration
+{
+    Q_OBJECT
+public:
+    QWasmIntegration();
+    ~QWasmIntegration();
+
+    bool hasCapability(QPlatformIntegration::Capability cap) const override;
+    QPlatformWindow *createPlatformWindow(QWindow *window) const override;
+    QPlatformBackingStore *createPlatformBackingStore(QWindow *window) const override;
+#ifndef QT_NO_OPENGL
+    QPlatformOpenGLContext *createPlatformOpenGLContext(QOpenGLContext *context) const override;
+#endif
+    QPlatformFontDatabase *fontDatabase() const override;
+    QAbstractEventDispatcher *createEventDispatcher() const override;
+    QVariant styleHint(QPlatformIntegration::StyleHint hint) const override;
+    QStringList themeNames() const override;
+    QPlatformTheme *createPlatformTheme(const QString &name) const override;
+
+    static QWasmIntegration *get();
+    QWasmScreen *screen() { return m_screen; }
+    QWasmCompositor *compositor() { return m_compositor; }
+    QWasmEventTranslator *eventTranslator() { return m_eventTranslator; }
+
+    static void QWasmBrowserExit();
+    static void updateQScreenAndCanvasRenderSize();
+
+private:
+    mutable QWasmFontDatabase *m_fontDb;
+    QWasmCompositor *m_compositor;
+    mutable QWasmScreen *m_screen;
+    mutable QWasmEventTranslator *m_eventTranslator;
+    mutable QWasmEventDispatcher *m_eventDispatcher;
+    static int uiEvent_cb(int eventType, const EmscriptenUiEvent *e, void *userData);
+    mutable QHash<QWindow *, QWasmBackingStore *> m_backingStores;
+};
+
+QT_END_NAMESPACE
+
+#endif // QWASMINTEGRATION_H