From 0a4c5b5119ccefc355fe737f03ec330e70c33ec9 Mon Sep 17 00:00:00 2001 From: Alexandra Cherdantseva Date: Fri, 17 Jan 2020 12:32:27 +0300 Subject: wasm: fix redundant string conversions between wasm and JavaScript MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Avoid redundant conversions from UTF16 to UTF8 to UTF16 with help of new class QWasmString static methods: + QWasmString::fromQString to convert QString to js string using js Module.UTF16ToString + QWasmString::toQString to convert js string to QString using js Module.stringToUTF16 Fixed document.getElementById calls for cavasId with unicode characters. Change-Id: I3fc55bfeb6aeda75fa3acd85d22cea667b542f38 Reviewed-by: Morten Johan Sørvig Reviewed-by: Lorn Potter --- src/plugins/platforms/wasm/qwasmclipboard.cpp | 38 +++++++------- src/plugins/platforms/wasm/qwasmcursor.cpp | 7 +-- .../platforms/wasm/qwasmeventtranslator.cpp | 6 ++- src/plugins/platforms/wasm/qwasmintegration.cpp | 11 ++-- src/plugins/platforms/wasm/qwasmscreen.cpp | 4 +- src/plugins/platforms/wasm/qwasmservices.cpp | 6 ++- src/plugins/platforms/wasm/qwasmstring.cpp | 61 ++++++++++++++++++++++ src/plugins/platforms/wasm/qwasmstring.h | 45 ++++++++++++++++ src/plugins/platforms/wasm/wasm.pro | 6 ++- 9 files changed, 150 insertions(+), 34 deletions(-) create mode 100644 src/plugins/platforms/wasm/qwasmstring.cpp create mode 100644 src/plugins/platforms/wasm/qwasmstring.h (limited to 'src/plugins/platforms/wasm') diff --git a/src/plugins/platforms/wasm/qwasmclipboard.cpp b/src/plugins/platforms/wasm/qwasmclipboard.cpp index fb46f1534f..f02c2c6ccb 100644 --- a/src/plugins/platforms/wasm/qwasmclipboard.cpp +++ b/src/plugins/platforms/wasm/qwasmclipboard.cpp @@ -29,6 +29,7 @@ #include "qwasmclipboard.h" #include "qwasmwindow.h" +#include "qwasmstring.h" #include #include @@ -40,22 +41,22 @@ using namespace emscripten; // there has got to be a better way... -static QByteArray g_clipboardArray; -static QByteArray g_clipboardFormat; +static QString g_clipboardText; +static QString g_clipboardFormat; static val getClipboardData() { - return val(g_clipboardArray.constData()); + return QWasmString::fromQString(g_clipboardText); } static val getClipboardFormat() { - return val(g_clipboardFormat.constData()); + return QWasmString::fromQString(g_clipboardFormat); } static void pasteClipboardData(emscripten::val format, emscripten::val dataPtr) { - QString formatString = QString::fromStdString(format.as()); + QString formatString = QWasmString::toQString(format); QByteArray dataArray = QByteArray::fromStdString(dataPtr.as()); QMimeData *mMimeData = new QMimeData; mMimeData->setData(formatString, dataArray); @@ -102,11 +103,10 @@ static void qClipboardPasteTo(val event) bool hasClipboardApi = QWasmIntegration::get()->getWasmClipboard()->hasClipboardApi; val clipdata = hasClipboardApi ? val::global("Module").call("qtGetClipboardData") : - event["clipboardData"].call("getData", std::string("text")); + event["clipboardData"].call("getData", val("text")); - const std::string data = clipdata.as(); - if (data.length() > 0) { - QString qstr = QString::fromStdString(data); + const QString qstr = QWasmString::toQString(clipdata); + if (qstr.length() > 0) { QMimeData *mMimeData = new QMimeData; mMimeData->setText(qstr); QWasmClipboard::qWasmClipboardPaste(mMimeData); @@ -133,7 +133,7 @@ QWasmClipboard::QWasmClipboard() QWasmClipboard::~QWasmClipboard() { - g_clipboardArray.clear(); + g_clipboardText.clear(); g_clipboardFormat.clear(); } @@ -148,11 +148,11 @@ QMimeData* QWasmClipboard::mimeData(QClipboard::Mode mode) void QWasmClipboard::setMimeData(QMimeData* mimeData, QClipboard::Mode mode) { if (mimeData->hasText()) { - g_clipboardFormat = mimeData->formats().at(0).toUtf8(); - g_clipboardArray = mimeData->text().toUtf8(); + g_clipboardFormat = mimeData->formats().at(0); + g_clipboardText = mimeData->text(); } else if (mimeData->hasHtml()) { - g_clipboardFormat =mimeData->formats().at(0).toUtf8(); - g_clipboardArray = mimeData->html().toUtf8(); + g_clipboardFormat = mimeData->formats().at(0); + g_clipboardText = mimeData->html(); } QPlatformClipboard::setMimeData(mimeData, mode); @@ -199,13 +199,13 @@ void QWasmClipboard::installEventHandlers(const QString &canvasId) // Fallback path for browsers which do not support direct clipboard access val document = val::global("document"); - val canvas = document.call("getElementById", val(canvasId.toUtf8().constData())); + val canvas = document.call("getElementById", QWasmString::fromQString(canvasId)); - canvas.call("addEventListener", std::string("cut"), + canvas.call("addEventListener", val("cut"), val::module_property("qtClipboardCutTo")); - canvas.call("addEventListener", std::string("copy"), + canvas.call("addEventListener", val("copy"), val::module_property("qtClipboardCopyTo")); - canvas.call("addEventListener", std::string("paste"), + canvas.call("addEventListener", val("paste"), val::module_property("qtClipboardPasteTo")); } @@ -226,6 +226,6 @@ void QWasmClipboard::writeTextToClipboard() val txt = module.call("qtGetClipboardData"); val format = module.call("qtGetClipboardFormat"); val navigator = val::global("navigator"); - navigator["clipboard"].call("writeText", txt.as()); + navigator["clipboard"].call("writeText", txt); } } diff --git a/src/plugins/platforms/wasm/qwasmcursor.cpp b/src/plugins/platforms/wasm/qwasmcursor.cpp index c04fa6441a..616456b2fa 100644 --- a/src/plugins/platforms/wasm/qwasmcursor.cpp +++ b/src/plugins/platforms/wasm/qwasmcursor.cpp @@ -29,6 +29,7 @@ #include "qwasmcursor.h" #include "qwasmscreen.h" +#include "qwasmstring.h" #include #include @@ -56,11 +57,11 @@ void QWasmCursor::changeCursor(QCursor *windowCursor, QWindow *window) htmlCursorName = "auto"; // Set cursor on the canvas - QByteArray canvasId = QWasmScreen::get(screen)->canvasId().toUtf8(); + val jsCanvasId = QWasmString::fromQString(QWasmScreen::get(screen)->canvasId()); val document = val::global("document"); - val canvas = document.call("getElementById", val(canvasId.constData())); + val canvas = document.call("getElementById", jsCanvasId); val canvasStyle = canvas["style"]; - canvasStyle.set("cursor", emscripten::val(htmlCursorName.constData())); + canvasStyle.set("cursor", val(htmlCursorName.constData())); } QByteArray QWasmCursor::cursorShapeToHtml(Qt::CursorShape shape) diff --git a/src/plugins/platforms/wasm/qwasmeventtranslator.cpp b/src/plugins/platforms/wasm/qwasmeventtranslator.cpp index 8b7d00082f..1ccac87afa 100644 --- a/src/plugins/platforms/wasm/qwasmeventtranslator.cpp +++ b/src/plugins/platforms/wasm/qwasmeventtranslator.cpp @@ -32,6 +32,7 @@ #include "qwasmcompositor.h" #include "qwasmintegration.h" #include "qwasmclipboard.h" +#include "qwasmstring.h" #include #include @@ -355,9 +356,10 @@ void QWasmEventTranslator::initEventHandlers() if (emscripten::val::global("window")["safari"].isUndefined()) { val document = val::global("document"); - val canvas = document.call("getElementById", val(canvasId)); + val jsCanvasId = QWasmString::fromQString(screen()->canvasId()); + val canvas = document.call("getElementById", jsCanvasId); canvas.call("addEventListener", - std::string("wheel"), + val("wheel"), val::module_property("qtMouseWheelEvent")); } } diff --git a/src/plugins/platforms/wasm/qwasmintegration.cpp b/src/plugins/platforms/wasm/qwasmintegration.cpp index 1e9f68027c..fd53cd0bae 100644 --- a/src/plugins/platforms/wasm/qwasmintegration.cpp +++ b/src/plugins/platforms/wasm/qwasmintegration.cpp @@ -36,6 +36,7 @@ #include "qwasmclipboard.h" #include "qwasmservices.h" #include "qwasmoffscreensurface.h" +#include "qwasmstring.h" #include "qwasmwindow.h" #ifndef QT_NO_OPENGL @@ -67,19 +68,19 @@ static void browserBeforeUnload(emscripten::val) static void addCanvasElement(emscripten::val canvas) { - QString canvasId = QString::fromStdString(canvas["id"].as()); + QString canvasId = QWasmString::toQString(canvas["id"]); QWasmIntegration::get()->addScreen(canvasId); } static void removeCanvasElement(emscripten::val canvas) { - QString canvasId = QString::fromStdString(canvas["id"].as()); + QString canvasId = QWasmString::toQString(canvas["id"]); QWasmIntegration::get()->removeScreen(canvasId); } static void resizeCanvasElement(emscripten::val canvas) { - QString canvasId = QString::fromStdString(canvas["id"].as()); + QString canvasId = QWasmString::toQString(canvas["id"]); QWasmIntegration::get()->resizeScreen(canvasId); } @@ -115,11 +116,11 @@ QWasmIntegration::QWasmIntegration() int screenCount = qtCanvaseElements["length"].as(); for (int i = 0; i < screenCount; ++i) { emscripten::val canvas = qtCanvaseElements[i].as(); - QString canvasId = QString::fromStdString(canvas["id"].as()); + QString canvasId = QWasmString::toQString(canvas["id"]); addScreen(canvasId); } } else if (!canvas.isUndefined()){ - QString canvasId = QString::fromStdString(canvas["id"].as()); + QString canvasId = QWasmString::toQString(canvas["id"]); addScreen(canvasId); } diff --git a/src/plugins/platforms/wasm/qwasmscreen.cpp b/src/plugins/platforms/wasm/qwasmscreen.cpp index fe44fdb096..d407111c2f 100644 --- a/src/plugins/platforms/wasm/qwasmscreen.cpp +++ b/src/plugins/platforms/wasm/qwasmscreen.cpp @@ -32,6 +32,8 @@ #include "qwasmeventtranslator.h" #include "qwasmcompositor.h" #include "qwasmintegration.h" +#include "qwasmstring.h" + #include #include @@ -184,7 +186,7 @@ void QWasmScreen::updateQScreenAndCanvasRenderSize() QSizeF canvasSize = cssSize * devicePixelRatio(); val document = val::global("document"); - val canvas = document.call("getElementById", val(canvasId.constData())); + val canvas = document.call("getElementById", QWasmString::fromQString(m_canvasId)); canvas.set("width", canvasSize.width()); canvas.set("height", canvasSize.height()); diff --git a/src/plugins/platforms/wasm/qwasmservices.cpp b/src/plugins/platforms/wasm/qwasmservices.cpp index 9328b8c065..4eee3fe972 100644 --- a/src/plugins/platforms/wasm/qwasmservices.cpp +++ b/src/plugins/platforms/wasm/qwasmservices.cpp @@ -28,6 +28,8 @@ ****************************************************************************/ #include "qwasmservices.h" +#include "qwasmstring.h" + #include #include @@ -37,8 +39,8 @@ QT_BEGIN_NAMESPACE bool QWasmServices::openUrl(const QUrl &url) { - QByteArray utf8Url = url.toString().toUtf8(); - emscripten::val::global("window").call("open", emscripten::val(utf8Url.constData()), emscripten::val("_blank")); + emscripten::val jsUrl = QWasmString::fromQString(url.toString()); + emscripten::val::global("window").call("open", jsUrl, emscripten::val("_blank")); return true; } diff --git a/src/plugins/platforms/wasm/qwasmstring.cpp b/src/plugins/platforms/wasm/qwasmstring.cpp new file mode 100644 index 0000000000..05b571c459 --- /dev/null +++ b/src/plugins/platforms/wasm/qwasmstring.cpp @@ -0,0 +1,61 @@ +/**************************************************************************** +** +** Copyright (C) 2020 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. +** +** $QT_END_LICENSE$ +** +****************************************************************************/ + +#include "qwasmstring.h" + +QT_BEGIN_NAMESPACE + +using namespace emscripten; + +val QWasmString::fromQString(const QString &str) +{ + static const val UTF16ToString( + val::global("Module")["UTF16ToString"]); + + auto ptr = quintptr(str.utf16()); + return UTF16ToString(val(ptr)); +} + +QString QWasmString::toQString(const val &v) +{ + QString result; + if (!v.isString()) + return result; + + static const val stringToUTF16( + val::global("Module")["stringToUTF16"]); + static const val length("length"); + + result.resize(v[length].as()); + auto ptr = quintptr(result.utf16()); + stringToUTF16(v, val(ptr)); + return result; +} + +QT_END_NAMESPACE diff --git a/src/plugins/platforms/wasm/qwasmstring.h b/src/plugins/platforms/wasm/qwasmstring.h new file mode 100644 index 0000000000..de5da92830 --- /dev/null +++ b/src/plugins/platforms/wasm/qwasmstring.h @@ -0,0 +1,45 @@ +/**************************************************************************** +** +** Copyright (C) 2020 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. +** +** $QT_END_LICENSE$ +** +****************************************************************************/ + +#pragma once + +#include + +#include + +QT_BEGIN_NAMESPACE + +class QWasmString +{ +public: + static emscripten::val fromQString(const QString &str); + static QString toQString(const emscripten::val &v); +}; +QT_END_NAMESPACE + diff --git a/src/plugins/platforms/wasm/wasm.pro b/src/plugins/platforms/wasm/wasm.pro index f8c8175525..a12ae06833 100644 --- a/src/plugins/platforms/wasm/wasm.pro +++ b/src/plugins/platforms/wasm/wasm.pro @@ -23,7 +23,8 @@ SOURCES = \ qwasmtheme.cpp \ qwasmclipboard.cpp \ qwasmservices.cpp \ - qwasmoffscreensurface.cpp + qwasmoffscreensurface.cpp \ + qwasmstring.cpp HEADERS = \ qwasmintegration.h \ @@ -39,7 +40,8 @@ HEADERS = \ qwasmtheme.h \ qwasmclipboard.h \ qwasmservices.h \ - qwasmoffscreensurface.h + qwasmoffscreensurface.h \ + qwasmstring.h wasmfonts.files = \ ../../../3rdparty/wasm/Vera.ttf \ -- cgit v1.2.3