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// Copyright (C) 2018 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GPL-3.0-only
#include "qwasmcursor.h"
#include "qwasmscreen.h"
#include "qwasmwindow.h"
#include <QtCore/qbuffer.h>
#include <QtCore/qdebug.h>
#include <QtCore/qstring.h>
#include <QtGui/qwindow.h>
#include <emscripten/emscripten.h>
#include <emscripten/bind.h>
QT_BEGIN_NAMESPACE
using namespace emscripten;
namespace {
QByteArray cursorToCss(const QCursor *cursor)
{
auto shape = cursor->shape();
switch (shape) {
case Qt::ArrowCursor:
return "default";
case Qt::UpArrowCursor:
return "n-resize";
case Qt::CrossCursor:
return "crosshair";
case Qt::WaitCursor:
return "wait";
case Qt::IBeamCursor:
return "text";
case Qt::SizeVerCursor:
return "ns-resize";
case Qt::SizeHorCursor:
return "ew-resize";
case Qt::SizeBDiagCursor:
return "nesw-resize";
case Qt::SizeFDiagCursor:
return "nwse-resize";
case Qt::SizeAllCursor:
return "move";
case Qt::BlankCursor:
return "none";
case Qt::SplitVCursor:
return "row-resize";
case Qt::SplitHCursor:
return "col-resize";
case Qt::PointingHandCursor:
return "pointer";
case Qt::ForbiddenCursor:
return "not-allowed";
case Qt::WhatsThisCursor:
return "help";
case Qt::BusyCursor:
return "progress";
case Qt::OpenHandCursor:
return "grab";
case Qt::ClosedHandCursor:
return "grabbing";
case Qt::DragCopyCursor:
return "copy";
case Qt::DragMoveCursor:
return "default";
case Qt::DragLinkCursor:
return "alias";
case Qt::BitmapCursor: {
auto pixmap = cursor->pixmap();
QByteArray cursorAsPng;
QBuffer buffer(&cursorAsPng);
buffer.open(QBuffer::WriteOnly);
pixmap.save(&buffer, "PNG");
buffer.close();
auto cursorAsBase64 = cursorAsPng.toBase64();
auto hotSpot = cursor->hotSpot();
auto encodedCursor =
QString("url(data:image/png;base64,%1) %2 %3, auto")
.arg(QString::fromUtf8(cursorAsBase64),
QString::number(hotSpot.x()),
QString::number(hotSpot.y()));
return encodedCursor.toUtf8();
}
default:
static_assert(Qt::CustomCursor == 25,
"New cursor type added, handle it");
qWarning() << "QWasmCursor: " << shape << " unsupported";
return "default";
}
}
} // namespace
void QWasmCursor::changeCursor(QCursor *windowCursor, QWindow *window)
{
if (!window)
return;
if (QWasmWindow *wasmWindow = static_cast<QWasmWindow *>(window->handle()))
wasmWindow->setWindowCursor(windowCursor ? cursorToCss(windowCursor) : "default");
}
QT_END_NAMESPACE
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