Some qt6 prep

.gitignore

@@ -26,6 +26,8 @@ GPATH
 *.dylib
 
 vgcore.*
+heaptrack.*
+massif.*
 
 # Qt-es
 

src/BlurhashProvider.h

@@ -64,8 +64,12 @@ public:
 };
 
 class BlurhashProvider
-  : public QObject
-  , public QQuickAsyncImageProvider
+  :
+#if QT_VERSION < 0x60000
+  public QObject
+  ,
+#endif
+  public QQuickAsyncImageProvider
 {
     Q_OBJECT
 public slots:

src/Cache.cpp

@@ -3835,7 +3835,7 @@ Cache::displayName(const QString &room_id, const QString &user_id)
 static bool
 isDisplaynameSafe(const std::string &s)
 {
-    for (QChar c : QString::fromStdString(s).toUcs4()) {
+    for (QChar c : QString::fromStdString(s)) {
         if (c.isPrint() && !c.isSpace())
             return false;
     }

src/ChatPage.cpp

@@ -62,7 +62,6 @@ ChatPage::ChatPage(QSharedPointer<UserSettings> userSettings, QWidget *parent)
 
     topLayout_ = new QHBoxLayout(this);
     topLayout_->setSpacing(0);
-    topLayout_->setMargin(0);
 
     view_manager_ = new TimelineViewManager(callManager_, this);
 
@@ -1303,7 +1302,7 @@ ChatPage::handleMatrixUri(QString uri)
     auto tempPath = uri_.path(QUrl::ComponentFormattingOption::FullyEncoded);
     if (tempPath.startsWith('/'))
         tempPath.remove(0, 1);
-    auto segments = tempPath.splitRef('/');
+    auto segments = QStringView(tempPath).split('/');
 
     if (segments.size() != 2 && segments.size() != 4)
         return false;
@@ -1314,7 +1313,7 @@ ChatPage::handleMatrixUri(QString uri)
         return false;
 
     QString mxid2;
-    if (segments.size() == 4 && segments[2] == "e") {
+    if (segments.size() == 4 && segments[2] == QStringView(u"e")) {
         if (segments[3].isEmpty())
             return false;
         else

src/CompletionProxyModel.cpp

@@ -48,7 +48,7 @@ CompletionProxyModel::CompletionProxyModel(QAbstractItemModel *model,
                          .toString()
                          .toLower();
 
-        for (const auto &e : string1.splitRef(splitPoints)) {
+        for (const auto &e : QStringView(string1).split(splitPoints)) {
             if (!e.isEmpty()) // NOTE(Nico): Use Qt::SkipEmptyParts in Qt 5.14
                 trie_.insert(e.toUcs4(), i);
         }
@@ -59,7 +59,7 @@ CompletionProxyModel::CompletionProxyModel(QAbstractItemModel *model,
                          .toLower();
 
         if (!string2.isEmpty()) {
-            for (const auto &e : string2.splitRef(splitPoints)) {
+            for (const auto &e : QStringView(string2).split(splitPoints)) {
                 if (!e.isEmpty()) // NOTE(Nico): Use Qt::SkipEmptyParts in Qt 5.14
                     trie_.insert(e.toUcs4(), i);
             }

src/JdenticonProvider.h

@@ -53,8 +53,12 @@ public:
 };
 
 class JdenticonProvider
-  : public QObject
-  , public QQuickAsyncImageProvider
+  :
+#if QT_VERSION < 0x60000
+  public QObject
+  ,
+#endif
+  public QQuickAsyncImageProvider
 {
     Q_OBJECT
 
@@ -72,11 +76,11 @@ public slots:
         auto queryStart = id.lastIndexOf('?');
         if (queryStart != -1) {
             id_            = id.left(queryStart);
-            auto query     = id.midRef(queryStart + 1);
-            auto queryBits = query.split('&');
+            auto query     = id.mid(queryStart + 1);
+            auto queryBits = query.splitRef('&');
 
             for (auto b : queryBits) {
-                if (b.startsWith("radius=")) {
+                if (b.startsWith(QStringView(u"radius="))) {
                     radius = b.mid(7).toDouble();
                 }
             }

src/LoginPage.cpp

@@ -40,7 +40,6 @@ LoginPage::LoginPage(QWidget *parent)
 
     top_bar_layout_ = new QHBoxLayout();
     top_bar_layout_->setSpacing(0);
-    top_bar_layout_->setMargin(0);
 
     back_button_ = new FlatButton(this);
     back_button_->setMinimumSize(QSize(30, 30));
@@ -497,7 +496,7 @@ void
 LoginPage::paintEvent(QPaintEvent *)
 {
     QStyleOption opt;
-    opt.init(this);
+    opt.initFrom(this);
     QPainter p(this);
     style()->drawPrimitive(QStyle::PE_Widget, &opt, &p, this);
 }

src/MatrixClient.cpp

@@ -22,7 +22,7 @@ Q_DECLARE_METATYPE(mtx::responses::Sync)
 Q_DECLARE_METATYPE(mtx::responses::JoinedGroups)
 Q_DECLARE_METATYPE(mtx::responses::GroupProfile)
 
-Q_DECLARE_METATYPE(nlohmann::json)
+// Q_DECLARE_METATYPE(nlohmann::json)
 Q_DECLARE_METATYPE(std::string)
 Q_DECLARE_METATYPE(std::vector<std::string>)
 Q_DECLARE_METATYPE(std::vector<QString>)
@@ -54,7 +54,7 @@ init()
     qRegisterMetaType<mtx::responses::JoinedGroups>();
     qRegisterMetaType<mtx::responses::GroupProfile>();
     qRegisterMetaType<std::string>();
-    qRegisterMetaType<nlohmann::json>();
+    // qRegisterMetaType<nlohmann::json>();
     qRegisterMetaType<std::vector<std::string>>();
     qRegisterMetaType<std::vector<QString>>();
     qRegisterMetaType<std::map<QString, bool>>("std::map<QString, bool>");

src/MxcImageProvider.cpp

@@ -32,15 +32,15 @@ MxcImageProvider::requestImageResponse(const QString &id, const QSize &requested
     auto queryStart = id.lastIndexOf('?');
     if (queryStart != -1) {
         id_            = id.left(queryStart);
-        auto query     = id.midRef(queryStart + 1);
+        auto query     = QStringView(id).mid(queryStart + 1);
         auto queryBits = query.split('&');
 
         for (auto b : queryBits) {
-            if (b == "scale") {
+            if (b == QStringView(u"scale")) {
                 crop = false;
-            } else if (b.startsWith("radius=")) {
+            } else if (b.startsWith(QStringView(u"radius="))) {
                 radius = b.mid(7).toDouble();
-            } else if (b.startsWith("height=")) {
+            } else if (b.startsWith(u"height=")) {
                 size.setHeight(b.mid(7).toInt());
                 size.setWidth(0);
             }
@@ -109,7 +109,7 @@ MxcImageProvider::download(const QString &id,
         // Protect against synapse not following the spec:
         // https://github.com/matrix-org/synapse/issues/5302
         && requestedSize.height() <= 600 && requestedSize.width() <= 800) {
-        QString fileName = QString("%1_%2x%3_%4_radius%5")
+        QString fileName = QStringLiteral("%1_%2x%3_%4_radius%5")
                              .arg(QString::fromUtf8(id.toUtf8().toBase64(
                                QByteArray::Base64UrlEncoding | QByteArray::OmitTrailingEquals)))
                              .arg(requestedSize.width())

src/MxcImageProvider.h

@@ -71,8 +71,12 @@ public:
 };
 
 class MxcImageProvider
-  : public QObject
-  , public QQuickAsyncImageProvider
+  :
+#if QT_VERSION < 0x60000
+  public QObject
+  ,
+#endif
+  public QQuickAsyncImageProvider
 {
     Q_OBJECT
 public slots:
@@ -85,7 +89,4 @@ public slots:
                          std::function<void(QString, QSize, QImage, QString)> then,
                          bool crop     = true,
                          double radius = 0);
-
-private:
-    // QThreadPool pool;
 };

src/RegisterPage.cpp

@@ -61,7 +61,6 @@ RegisterPage::RegisterPage(QWidget *parent)
     logo_->setPixmap(logo.pixmap(128));
 
     logo_layout_ = new QHBoxLayout();
-    logo_layout_->setMargin(0);
     logo_layout_->addWidget(logo_, 0, Qt::AlignHCenter);
 
     form_wrapper_ = new QHBoxLayout();
@@ -128,7 +127,6 @@ RegisterPage::RegisterPage(QWidget *parent)
 
     button_layout_ = new QHBoxLayout();
     button_layout_->setSpacing(0);
-    button_layout_->setMargin(0);
 
     error_label_ = new QLabel(this);
     error_label_->setWordWrap(true);
@@ -406,7 +404,7 @@ void
 RegisterPage::paintEvent(QPaintEvent *)
 {
     QStyleOption opt;
-    opt.init(this);
+    opt.initFrom(this);
     QPainter p(this);
     style()->drawPrimitive(QStyle::PE_Widget, &opt, &p, this);
 }

src/TrayIcon.cpp

@@ -69,7 +69,10 @@ MsgCountComposedIcon::clone() const
 }
 
 QList<QSize>
-MsgCountComposedIcon::availableSizes(QIcon::Mode mode, QIcon::State state) const
+MsgCountComposedIcon::availableSizes(QIcon::Mode mode, QIcon::State state)
+#if QT_VERSION < QT_VERSION_CHECK(6, 0, 0)
+  const
+#endif
 {
     Q_UNUSED(mode);
     Q_UNUSED(state);

src/TrayIcon.h

@@ -20,7 +20,11 @@ public:
 
     void paint(QPainter *p, const QRect &rect, QIcon::Mode mode, QIcon::State state) override;
     QIconEngine *clone() const override;
-    QList<QSize> availableSizes(QIcon::Mode mode, QIcon::State state) const override;
+    QList<QSize> availableSizes(QIcon::Mode mode, QIcon::State state)
+#if QT_VERSION < QT_VERSION_CHECK(6, 0, 0)
+      const
+#endif
+      override;
     QPixmap pixmap(const QSize &size, QIcon::Mode mode, QIcon::State state) override;
 
     int msgCount = 0;

src/UserSettingsPage.cpp

@@ -771,7 +771,6 @@ UserSettingsPage::UserSettingsPage(QSharedPointer<UserSettings> settings, QWidge
 
     topBarLayout_ = new QHBoxLayout;
     topBarLayout_->setSpacing(0);
-    topBarLayout_->setMargin(0);
     topBarLayout_->addWidget(backBtn_, 1, Qt::AlignLeft | Qt::AlignVCenter);
     topBarLayout_->addStretch(1);
 
@@ -1443,7 +1442,7 @@ void
 UserSettingsPage::paintEvent(QPaintEvent *)
 {
     QStyleOption opt;
-    opt.init(this);
+    opt.initFrom(this);
     QPainter p(this);
     style()->drawPrimitive(QStyle::PE_Widget, &opt, &p, this);
 }

src/Utils.cpp

@@ -8,7 +8,6 @@
 #include <QBuffer>
 #include <QComboBox>
 #include <QCryptographicHash>
-#include <QDesktopWidget>
 #include <QGuiApplication>
 #include <QImageReader>
 #include <QProcessEnvironment>
@@ -389,7 +388,7 @@ utils::humanReadableFingerprint(const QString &ed25519)
 {
     QString fingerprint;
     for (int i = 0; i < ed25519.length(); i = i + 4) {
-        fingerprint.append(ed25519.midRef(i, 4));
+        fingerprint.append(QStringView(ed25519).mid(i, 4));
         if (i > 0 && i % 16 == 12)
             fingerprint.append('\n');
         else if (i < ed25519.length())
@@ -513,7 +512,8 @@ utils::markdownToHtml(const QString &text, bool rainbowify)
             while ((boundaryEnd = tbf.toNextBoundary()) != -1) {
                 charIdx++;
                 // Split text to get current char
-                auto curChar  = nodeText.midRef(boundaryStart, boundaryEnd - boundaryStart);
+                auto curChar =
+                  QStringView(nodeText).mid(boundaryStart, boundaryEnd - boundaryStart);
                 boundaryStart = boundaryEnd;
                 // Don't rainbowify whitespaces
                 if (curChar.trimmed().isEmpty() || codepointIsEmoji(curChar.toUcs4().first())) {

src/WelcomePage.cpp

@@ -81,7 +81,7 @@ void
 WelcomePage::paintEvent(QPaintEvent *)
 {
     QStyleOption opt;
-    opt.init(this);
+    opt.initFrom(this);
     QPainter p(this);
     style()->drawPrimitive(QStyle::PE_Widget, &opt, &p, this);
 }

src/dialogs/CreateRoom.cpp

@@ -32,7 +32,10 @@ CreateRoom::CreateRoom(QWidget *parent)
 
     auto layout = new QVBoxLayout(this);
     layout->setSpacing(conf::modals::WIDGET_SPACING);
-    layout->setMargin(conf::modals::WIDGET_MARGIN);
+    layout->setContentsMargins(conf::modals::WIDGET_MARGIN,
+                               conf::modals::WIDGET_MARGIN,
+                               conf::modals::WIDGET_MARGIN,
+                               conf::modals::WIDGET_MARGIN);
 
     auto buttonLayout = new QHBoxLayout();
     buttonLayout->setSpacing(15);

src/dialogs/FallbackAuth.cpp

@@ -25,11 +25,13 @@ FallbackAuth::FallbackAuth(const QString &authType, const QString &session, QWid
 
     auto layout = new QVBoxLayout(this);
     layout->setSpacing(conf::modals::WIDGET_SPACING);
-    layout->setMargin(conf::modals::WIDGET_MARGIN);
+    layout->setContentsMargins(conf::modals::WIDGET_MARGIN,
+                               conf::modals::WIDGET_MARGIN,
+                               conf::modals::WIDGET_MARGIN,
+                               conf::modals::WIDGET_MARGIN);
 
     auto buttonLayout = new QHBoxLayout();
     buttonLayout->setSpacing(8);
-    buttonLayout->setMargin(0);
 
     openBtn_    = new QPushButton(tr("Open Fallback in Browser"), this);
     cancelBtn_  = new QPushButton(tr("Cancel"), this);

src/dialogs/ImageOverlay.cpp

@@ -4,7 +4,6 @@
 // SPDX-License-Identifier: GPL-3.0-or-later
 
 #include <QApplication>
-#include <QDesktopWidget>
 #include <QGuiApplication>
 #include <QPainter>
 #include <QScreen>

src/dialogs/Logout.cpp

@@ -25,11 +25,13 @@ Logout::Logout(QWidget *parent)
 
     auto layout = new QVBoxLayout(this);
     layout->setSpacing(conf::modals::WIDGET_SPACING);
-    layout->setMargin(conf::modals::WIDGET_MARGIN);
+    layout->setContentsMargins(conf::modals::WIDGET_MARGIN,
+                               conf::modals::WIDGET_MARGIN,
+                               conf::modals::WIDGET_MARGIN,
+                               conf::modals::WIDGET_MARGIN);
 
     auto buttonLayout = new QHBoxLayout();
     buttonLayout->setSpacing(0);
-    buttonLayout->setMargin(0);
 
     confirmBtn_ = new QPushButton("Logout", this);
     cancelBtn_  = new QPushButton(tr("Cancel"), this);

src/dialogs/PreviewUploadOverlay.cpp

@@ -33,7 +33,6 @@ PreviewUploadOverlay::PreviewUploadOverlay(QWidget *parent)
     hlayout->addStretch(1);
     hlayout->addWidget(&cancel_);
     hlayout->addWidget(&upload_);
-    hlayout->setMargin(0);
 
     auto vlayout = new QVBoxLayout{this};
     vlayout->addWidget(&titleLabel_);
@@ -41,7 +40,10 @@ PreviewUploadOverlay::PreviewUploadOverlay(QWidget *parent)
     vlayout->addWidget(&fileName_);
     vlayout->addLayout(hlayout);
     vlayout->setSpacing(conf::modals::WIDGET_SPACING);
-    vlayout->setMargin(conf::modals::WIDGET_MARGIN);
+    vlayout->setContentsMargins(conf::modals::WIDGET_MARGIN,
+                                conf::modals::WIDGET_MARGIN,
+                                conf::modals::WIDGET_MARGIN,
+                                conf::modals::WIDGET_MARGIN);
 
     upload_.setDefault(true);
     connect(&upload_, &QPushButton::clicked, [this]() {
@@ -217,4 +219,4 @@ PreviewUploadOverlay::keyPressEvent(QKeyEvent *event)
     } else {
         QWidget::keyPressEvent(event);
     }
-}
+}

src/dialogs/ReCaptcha.cpp

@@ -25,11 +25,13 @@ ReCaptcha::ReCaptcha(const QString &session, QWidget *parent)
 
     auto layout = new QVBoxLayout(this);
     layout->setSpacing(conf::modals::WIDGET_SPACING);
-    layout->setMargin(conf::modals::WIDGET_MARGIN);
+    layout->setContentsMargins(conf::modals::WIDGET_MARGIN,
+                               conf::modals::WIDGET_MARGIN,
+                               conf::modals::WIDGET_MARGIN,
+                               conf::modals::WIDGET_MARGIN);
 
     auto buttonLayout = new QHBoxLayout();
     buttonLayout->setSpacing(8);
-    buttonLayout->setMargin(0);
 
     openCaptchaBtn_ = new QPushButton("Open reCAPTCHA", this);
     cancelBtn_      = new QPushButton(tr("Cancel"), this);

src/main.cpp

@@ -8,7 +8,6 @@
 #include <QApplication>
 #include <QCommandLineParser>
 #include <QDesktopServices>
-#include <QDesktopWidget>
 #include <QDir>
 #include <QFile>
 #include <QFontDatabase>

src/timeline/InputBar.cpp

@@ -140,7 +140,7 @@ InputBar::updateAtRoom(const QString &t)
             auto start = finder.position();
             finder.toNextBoundary();
             auto end = finder.position();
-            if (start > 0 && end - start >= 4 && t.midRef(start, end - start) == "room" &&
+            if (start > 0 && end - start >= 4 && t.mid(start, end - start) == "room" &&
                 t.at(start - 1) == QChar('@')) {
                 roomMention = true;
                 break;
@@ -324,7 +324,7 @@ InputBar::message(const QString &msg, MarkdownOverride useMarkdown, bool rainbow
 
         QString body;
         bool firstLine = true;
-        for (const auto &line : related.quoted_body.split("\n")) {
+        for (auto line : related.quoted_body.splitRef(u'\n')) {
             if (firstLine) {
                 firstLine = false;
                 body      = QString("> <%1> %2\n").arg(related.quoted_user, line);
@@ -707,9 +707,9 @@ InputBar::showPreview(const QMimeData &source, const QString &path, const QStrin
 
           QSize dimensions;
           QString blurhash;
-          auto mimeClass = mime.split("/")[0];
+          auto mimeClass = mime.splitRef(u'/')[0];
           nhlog::ui()->debug("Mime: {}", mime.toStdString());
-          if (mimeClass == "image") {
+          if (mimeClass == u"image") {
               QImage img = utils::readImage(data);
 
               dimensions = img.size();

src/timeline/InputBar.h

@@ -5,6 +5,7 @@
 #pragma once
 
 #include <QObject>
+#include <QStringList>
 #include <QTimer>
 #include <deque>
 
@@ -15,7 +16,6 @@ class TimelineModel;
 class CombinedImagePackModel;
 class QMimeData;
 class QDropEvent;
-class QStringList;
 
 enum class MarkdownOverride
 {

src/timeline/TimelineModel.cpp

@@ -643,7 +643,7 @@ TimelineModel::data(const mtx::events::collections::TimelineEvents &event, int r
         // only show read receipts for messages not from us
         if (acc::sender(event) != http::client()->user_id().to_string())
             return qml_mtx_events::Empty;
-        else if (!id.isEmpty() && id[0] == "m")
+        else if (!id.isEmpty() && id[0] == 'm')
             return qml_mtx_events::Sent;
         else if (read.contains(id) || containsOthers(cache::readReceipts(id, room_id_)))
             return qml_mtx_events::Read;
@@ -1029,7 +1029,7 @@ TimelineModel::setCurrentIndex(int index)
     if (!ChatPage::instance()->isActiveWindow())
         return;
 
-    if (!currentId.startsWith("m")) {
+    if (!currentId.startsWith('m')) {
         auto oldReadIndex =
           cache::getEventIndex(roomId().toStdString(), currentReadId.toStdString());
         auto nextEventIndexAndId =
@@ -1759,16 +1759,16 @@ TimelineModel::formatTypingUsers(const std::vector<QString> &users, const QColor
 
             if (startIndex - index != 0)
                 coloredUsername +=
-                  prefix +
-                  uncoloredUsername.midRef(index, startIndex > 0 ? startIndex - index : -1) +
-                  "</font>";
+                  prefix + uncoloredUsername.mid(index, startIndex > 0 ? startIndex - index : -1) +
+                  QStringLiteral("</font>");
 
             auto endIndex = uncoloredUsername.indexOf("</font>", startIndex);
             if (endIndex > 0)
                 endIndex += sizeof("</font>") - 1;
 
             if (endIndex - startIndex != 0)
-                coloredUsername += uncoloredUsername.midRef(startIndex, endIndex - startIndex);
+                coloredUsername +=
+                  QStringView(uncoloredUsername).mid(startIndex, endIndex - startIndex);
 
             index = endIndex;
         } while (index > 0 && index < uncoloredUsername.size());

src/ui/FloatingButton.cpp

@@ -2,6 +2,7 @@
 //
 // SPDX-License-Identifier: GPL-3.0-or-later
 
+#include <QEvent>
 #include <QPainter>
 #include <QPainterPath>
 

src/ui/MxcAnimatedImage.h

@@ -9,7 +9,7 @@
 #include <QObject>
 #include <QQuickItem>
 
-class TimelineModel;
+#include "timeline/TimelineModel.h"
 
 // This is an AnimatedImage, that can draw encrypted images
 class MxcAnimatedImage : public QQuickItem

src/ui/OverlayWidget.cpp

@@ -72,7 +72,7 @@ OverlayWidget::paintEvent(QPaintEvent *event)
     Q_UNUSED(event);
 
     QStyleOption opt;
-    opt.init(this);
+    opt.initFrom(this);
     QPainter p(this);
     style()->drawPrimitive(QStyle::PE_Widget, &opt, &p, this);
 }

src/ui/SnackBar.cpp

@@ -17,7 +17,7 @@ SnackBar::SnackBar(QWidget *parent)
 {
     QFont font;
     font.setPointSizeF(font.pointSizeF() * 1.2);
-    font.setWeight(50);
+    font.setWeight(QFont::Weight::Thin);
     setFont(font);
 
     boxHeight_ = QFontMetrics(font).height() * 2;

src/ui/UserProfile.h

@@ -12,6 +12,7 @@
 #include <mtx/responses/common.hpp>
 
 #include "CacheCryptoStructs.h"
+#include "timeline/TimelineModel.h"
 
 namespace verification {
 Q_NAMESPACE
@@ -28,7 +29,6 @@ Q_ENUM_NS(Status)
 }
 
 class DeviceVerificationFlow;
-class TimelineModel;
 class TimelineViewManager;
 
 class DeviceInfo

src/voip/CallManager.h

@@ -10,6 +10,7 @@
 #include <QMediaPlayer>
 #include <QObject>
 #include <QString>
+#include <QStringList>
 #include <QTimer>
 
 #include "CallDevices.h"
@@ -21,7 +22,6 @@ namespace mtx::responses {
 struct TurnServer;
 }
 
-class QStringList;
 class QUrl;
 
 class CallManager : public QObject