Add rows to stickerpicker

src/GridImagePackModel.cpp

@@ -0,0 +1,88 @@
+// SPDX-FileCopyrightText: Nheko Contributors
+//
+// SPDX-License-Identifier: GPL-3.0-or-later
+
+#include "GridImagePackModel.h"
+
+#include "Cache_p.h"
+#include "CompletionModelRoles.h"
+
+#include <algorithm>
+
+Q_DECLARE_METATYPE(StickerImage)
+
+GridImagePackModel::GridImagePackModel(const std::string &roomId, bool stickers, QObject *parent)
+  : QAbstractListModel(parent)
+  , room_id(roomId)
+{
+    [[maybe_unused]] static auto id = qRegisterMetaType<StickerImage>();
+
+    auto originalPacks = cache::client()->getImagePacks(room_id, stickers);
+
+    for (auto &pack : originalPacks) {
+        PackDesc newPack{};
+        newPack.packname =
+          pack.pack.pack ? QString::fromStdString(pack.pack.pack->display_name) : QString();
+        newPack.room_id   = pack.source_room;
+        newPack.state_key = pack.state_key;
+
+        newPack.images.resize(pack.pack.images.size());
+        std::ranges::transform(std::move(pack.pack.images), newPack.images.begin(), [](auto &&img) {
+            return std::pair(std::move(img.second), QString::fromStdString(img.first));
+        });
+
+        size_t packRowCount =
+          (newPack.images.size() / columns) + (newPack.images.size() % columns ? 1 : 0);
+        newPack.firstRow = rowToPack.size();
+        for (size_t i = 0; i < packRowCount; i++)
+            rowToPack.push_back(packs.size());
+        packs.push_back(std::move(newPack));
+    }
+}
+
+int
+GridImagePackModel::rowCount(const QModelIndex &) const
+{
+    return (int)rowToPack.size();
+}
+
+QHash<int, QByteArray>
+GridImagePackModel::roleNames() const
+{
+    return {
+      {Roles::PackName, "packname"},
+      {Roles::Row, "row"},
+    };
+}
+
+QVariant
+GridImagePackModel::data(const QModelIndex &index, int role) const
+{
+    if (index.row() < rowCount() && index.row() >= 0) {
+        const auto &pack = packs[rowToPack[index.row()]];
+        switch (role) {
+        case Roles::PackName:
+            return pack.packname;
+        case Roles::Row: {
+            std::size_t offset = static_cast<std::size_t>(index.row()) - pack.firstRow;
+            QList<StickerImage> imgs;
+            auto endOffset = std::min((offset + 1) * 3, pack.images.size());
+            for (std::size_t img = offset * 3; img < endOffset; img++) {
+                const auto &data = pack.images.at(img);
+                imgs.push_back({.url         = QString::fromStdString(data.first.url),
+                                .shortcode   = data.second,
+                                .body        = QString::fromStdString(data.first.body),
+                                .descriptor_ = std::vector{
+                                  pack.room_id,
+                                  pack.state_key,
+                                  data.second.toStdString(),
+                                }});
+            }
+            return QVariant::fromValue(imgs);
+        }
+        default:
+            return {};
+        }
+    }
+    return {};
+}