feat: ponies.im emoji support (custom emojum)

src/customemojimodel.cpp

@@ -0,0 +1,113 @@
+// SPDX-FileCopyrightText: 2021 Carson Black <uhhadd@gmail.com>
+// SPDX-License-Identifier: GPL-2.0-or-later
+
+#include "emojimodel.h"
+#include "customemojimodel_p.h"
+
+enum Roles {
+    Name,
+    ImageURL,
+    ModelData, // for emulating the regular emoji model's usage, otherwise the UI code would get too complicated
+};
+
+CustomEmojiModel::CustomEmojiModel(QObject* parent) : QAbstractListModel(parent), d(new Private)
+{
+    connect(this, &CustomEmojiModel::connectionChanged, this, &CustomEmojiModel::fetchEmojies);
+    connect(this, &CustomEmojiModel::connectionChanged, this, [this]() {
+        if (!d->conn) return;
+
+        connect(d->conn, &Connection::accountDataChanged, this, [this](const QString& id) {
+            if (id != QStringLiteral("im.ponies.user_emotes")) {
+                return;
+            }
+            fetchEmojies();
+        });
+    });
+}
+
+CustomEmojiModel::~CustomEmojiModel()
+{
+
+}
+
+QVariant CustomEmojiModel::data(const QModelIndex& idx, int role) const
+{
+    const auto row = idx.row();
+    if (row >= d->emojies.length()) {
+        return QVariant();
+    }
+    const auto& data = d->emojies[row];
+
+    switch (Roles(role)) {
+    case Roles::ModelData:
+        return QVariant::fromValue(Emoji(
+            QStringLiteral("image://mxc/") + data.url.mid(6),
+            data.name,
+            true
+        ));
+    case Roles::Name:
+        return data.name;
+    case Roles::ImageURL:
+        return QUrl(QStringLiteral("image://mxc/") + data.url.mid(6));
+    }
+
+    return QVariant();
+}
+
+int CustomEmojiModel::rowCount(const QModelIndex& parent) const
+{
+    Q_UNUSED(parent)
+
+    return d->emojies.length();
+}
+
+QHash<int,QByteArray> CustomEmojiModel::roleNames() const
+{
+    return {
+        { Name, "name" },
+        { ImageURL, "imageURL" },
+        { ModelData, "modelData" },
+    };
+}
+
+Connection* CustomEmojiModel::connection() const
+{
+    return d->conn;
+}
+
+void CustomEmojiModel::setConnection(Connection* it)
+{
+    if (d->conn == it) {
+        return;
+    }
+    if (d->conn != nullptr) {
+        disconnect(d->conn, nullptr, this, nullptr);
+    }
+    d->conn = it;
+    Q_EMIT connectionChanged();
+}
+
+QString CustomEmojiModel::preprocessText(const QString &it)
+{
+    auto cp = it;
+    for (const auto& emoji : d->emojies) {
+        cp.replace(emoji.regexp, QStringLiteral(R"(<img data-mx-emoticon="" src="%1" alt="%2" title="%2" height="32" vertical-align="middle" />)").arg(emoji.url).arg(emoji.name));
+    }
+    return cp;
+}
+
+QVariantList CustomEmojiModel::filterModel(const QString &filter)
+{
+    QVariantList results;
+    for (const auto& emoji : d->emojies) {
+        if (results.length() >= 10) break;
+        if (!emoji.name.contains(filter, Qt::CaseInsensitive)) continue;
+
+        results << QVariant::fromValue(Emoji(
+            QStringLiteral("image://mxc/") + emoji.url.mid(6),
+            emoji.name,
+            true
+        ));
+    }
+    return results;
+}