| /**************************************************************************** |
| ** |
| ** 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 |
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| ** |
| ** 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 |
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| ** |
| ** $QT_END_LICENSE$ |
| ** |
| ****************************************************************************/ |
| |
| #include "qwasmclipboard.h" |
| #include "qwasmwindow.h" |
| #include "qwasmstring.h" |
| |
| #include <emscripten.h> |
| #include <emscripten/html5.h> |
| #include <emscripten/bind.h> |
| |
| #include <QCoreApplication> |
| #include <qpa/qwindowsysteminterface.h> |
| |
| using namespace emscripten; |
| |
| // there has got to be a better way... |
| static QString g_clipboardText; |
| static QString g_clipboardFormat; |
| |
| static val getClipboardData() |
| { |
| return QWasmString::fromQString(g_clipboardText); |
| } |
| |
| static val getClipboardFormat() |
| { |
| return QWasmString::fromQString(g_clipboardFormat); |
| } |
| |
| static void pasteClipboardData(emscripten::val format, emscripten::val dataPtr) |
| { |
| QString formatString = QWasmString::toQString(format); |
| QByteArray dataArray = QByteArray::fromStdString(dataPtr.as<std::string>()); |
| QMimeData *mMimeData = new QMimeData; |
| mMimeData->setData(formatString, dataArray); |
| QWasmClipboard::qWasmClipboardPaste(mMimeData); |
| } |
| |
| static void qClipboardPromiseResolve(emscripten::val something) |
| { |
| pasteClipboardData(emscripten::val("text/plain"), something); |
| } |
| |
| static void qClipboardCutTo(val event) |
| { |
| if (!QWasmIntegration::get()->getWasmClipboard()->hasClipboardApi) { |
| // Send synthetic Ctrl+X to make the app cut data to Qt's clipboard |
| QWindowSystemInterface::handleKeyEvent<QWindowSystemInterface::SynchronousDelivery>( |
| 0, QEvent::KeyPress, Qt::Key_X, Qt::ControlModifier, "X"); |
| } |
| |
| val module = val::global("Module"); |
| val clipdata = module.call<val>("qtGetClipboardData"); |
| val clipFormat = module.call<val>("qtGetClipboardFormat"); |
| event["clipboardData"].call<void>("setData", clipFormat, clipdata); |
| event.call<void>("preventDefault"); |
| } |
| |
| static void qClipboardCopyTo(val event) |
| { |
| if (!QWasmIntegration::get()->getWasmClipboard()->hasClipboardApi) { |
| // Send synthetic Ctrl+C to make the app copy data to Qt's clipboard |
| QWindowSystemInterface::handleKeyEvent<QWindowSystemInterface::SynchronousDelivery>( |
| 0, QEvent::KeyPress, Qt::Key_C, Qt::ControlModifier, "C"); |
| } |
| |
| val module = val::global("Module"); |
| val clipdata = module.call<val>("qtGetClipboardData"); |
| val clipFormat = module.call<val>("qtGetClipboardFormat"); |
| event["clipboardData"].call<void>("setData", clipFormat, clipdata); |
| event.call<void>("preventDefault"); |
| } |
| |
| static void qClipboardPasteTo(val event) |
| { |
| bool hasClipboardApi = QWasmIntegration::get()->getWasmClipboard()->hasClipboardApi; |
| val clipdata = hasClipboardApi ? |
| val::global("Module").call<val>("qtGetClipboardData") : |
| event["clipboardData"].call<val>("getData", val("text")); |
| |
| const QString qstr = QWasmString::toQString(clipdata); |
| if (qstr.length() > 0) { |
| QMimeData *mMimeData = new QMimeData; |
| mMimeData->setText(qstr); |
| QWasmClipboard::qWasmClipboardPaste(mMimeData); |
| } |
| } |
| |
| EMSCRIPTEN_BINDINGS(qtClipboardModule) { |
| function("qtGetClipboardData", &getClipboardData); |
| function("qtGetClipboardFormat", &getClipboardFormat); |
| function("qtPasteClipboardData", &pasteClipboardData); |
| function("qtClipboardPromiseResolve", &qClipboardPromiseResolve); |
| function("qtClipboardCutTo", &qClipboardCutTo); |
| function("qtClipboardCopyTo", &qClipboardCopyTo); |
| function("qtClipboardPasteTo", &qClipboardPasteTo); |
| } |
| |
| QWasmClipboard::QWasmClipboard() |
| { |
| val clipboard = val::global("navigator")["clipboard"]; |
| val permissions = val::global("navigator")["permissions"]; |
| hasClipboardApi = (!clipboard.isUndefined() && !permissions.isUndefined() && !clipboard["readText"].isUndefined()); |
| if (hasClipboardApi) |
| initClipboardEvents(); |
| } |
| |
| QWasmClipboard::~QWasmClipboard() |
| { |
| g_clipboardText.clear(); |
| g_clipboardFormat.clear(); |
| } |
| |
| QMimeData* QWasmClipboard::mimeData(QClipboard::Mode mode) |
| { |
| if (mode != QClipboard::Clipboard) |
| return nullptr; |
| |
| return QPlatformClipboard::mimeData(mode); |
| } |
| |
| void QWasmClipboard::setMimeData(QMimeData* mimeData, QClipboard::Mode mode) |
| { |
| if (mimeData->hasText()) { |
| g_clipboardFormat = mimeData->formats().at(0); |
| g_clipboardText = mimeData->text(); |
| } else if (mimeData->hasHtml()) { |
| g_clipboardFormat = mimeData->formats().at(0); |
| g_clipboardText = mimeData->html(); |
| } |
| |
| QPlatformClipboard::setMimeData(mimeData, mode); |
| } |
| |
| bool QWasmClipboard::supportsMode(QClipboard::Mode mode) const |
| { |
| return mode == QClipboard::Clipboard; |
| } |
| |
| bool QWasmClipboard::ownsMode(QClipboard::Mode mode) const |
| { |
| Q_UNUSED(mode); |
| return false; |
| } |
| |
| void QWasmClipboard::qWasmClipboardPaste(QMimeData *mData) |
| { |
| QWasmIntegration::get()->clipboard()->setMimeData(mData, QClipboard::Clipboard); |
| |
| QWindowSystemInterface::handleKeyEvent<QWindowSystemInterface::SynchronousDelivery>( |
| 0, QEvent::KeyPress, Qt::Key_V, Qt::ControlModifier, "V"); |
| } |
| |
| void QWasmClipboard::initClipboardEvents() |
| { |
| if (!hasClipboardApi) |
| return; |
| |
| val permissions = val::global("navigator")["permissions"]; |
| val readPermissionsMap = val::object(); |
| readPermissionsMap.set("name", val("clipboard-read")); |
| permissions.call<val>("query", readPermissionsMap); |
| |
| val writePermissionsMap = val::object(); |
| writePermissionsMap.set("name", val("clipboard-write")); |
| permissions.call<val>("query", writePermissionsMap); |
| } |
| |
| void QWasmClipboard::installEventHandlers(const emscripten::val &canvas) |
| { |
| if (hasClipboardApi) |
| return; |
| |
| // Fallback path for browsers which do not support direct clipboard access |
| canvas.call<void>("addEventListener", val("cut"), |
| val::module_property("qtClipboardCutTo")); |
| canvas.call<void>("addEventListener", val("copy"), |
| val::module_property("qtClipboardCopyTo")); |
| canvas.call<void>("addEventListener", val("paste"), |
| val::module_property("qtClipboardPasteTo")); |
| } |
| |
| void QWasmClipboard::readTextFromClipboard() |
| { |
| if (QWasmIntegration::get()->getWasmClipboard()->hasClipboardApi) { |
| val navigator = val::global("navigator"); |
| val textPromise = navigator["clipboard"].call<val>("readText"); |
| val readTextResolve = val::global("Module")["qtClipboardPromiseResolve"]; |
| textPromise.call<val>("then", readTextResolve); |
| } |
| } |
| |
| void QWasmClipboard::writeTextToClipboard() |
| { |
| if (QWasmIntegration::get()->getWasmClipboard()->hasClipboardApi) { |
| val module = val::global("Module"); |
| val txt = module.call<val>("qtGetClipboardData"); |
| val format = module.call<val>("qtGetClipboardFormat"); |
| val navigator = val::global("navigator"); |
| navigator["clipboard"].call<void>("writeText", txt); |
| } |
| } |