tools/chatgui: Qt5 GUI chat app stub with tray, channel list, message bubbles

tools/chatgui/src/accountlist.cpp

@@ -0,0 +1,69 @@
+#include "accountlist.h"
+#include <QVBoxLayout>
+#include <QLabel>
+#include <QPainter>
+#include <QPixmap>
+
+static QPixmap makeAvatar(const QColor &color, const QString &letter) {
+    QPixmap pix(24, 24);
+    pix.fill(Qt::transparent);
+    QPainter p(&pix);
+    p.setRenderHint(QPainter::Antialiasing);
+    p.setBrush(color);
+    p.setPen(Qt::NoPen);
+    p.drawEllipse(0, 0, 24, 24);
+    p.setPen(Qt::white);
+    QFont f = p.font();
+    f.setBold(true);
+    f.setPointSize(10);
+    p.setFont(f);
+    p.drawText(QRect(0, 0, 24, 24), Qt::AlignCenter, letter);
+    p.end();
+    return pix;
+}
+
+AccountList::AccountList(QWidget *parent)
+    : QWidget(parent)
+    , m_listView(new QListView(this))
+    , m_model(new QStandardItemModel(this))
+{
+    auto *layout = new QVBoxLayout(this);
+    layout->setContentsMargins(0, 0, 0, 0);
+    layout->setSpacing(0);
+
+    auto *header = new QLabel("Accounts", this);
+    header->setAlignment(Qt::AlignCenter);
+    header->setStyleSheet("font-weight: bold; padding: 8px; background: palette(window);");
+    layout->addWidget(header);
+
+    m_listView->setModel(m_model);
+    m_listView->setEditTriggers(QAbstractItemView::NoEditTriggers);
+    m_listView->setSelectionMode(QAbstractItemView::SingleSelection);
+    m_listView->setIconSize(QSize(24, 24));
+    m_listView->setHorizontalScrollBarPolicy(Qt::ScrollBarAlwaysOff);
+    m_listView->setVerticalScrollMode(QAbstractItemView::ScrollPerPixel);
+    layout->addWidget(m_listView);
+
+    populateStubData();
+}
+
+void AccountList::populateStubData() {
+    struct {
+        const char *name;
+        QColor color;
+        const char *letter;
+    } accounts[] = {
+        {"Alice",    QColor(74, 144, 226), "A"},
+        {"Bob",      QColor(126, 211, 33), "B"},
+        {"Carol",    QColor(245, 166, 35), "C"},
+        {"Dave",     QColor(144, 19, 254), "D"},
+        {"Eve",      QColor(0, 184, 148),  "E"},
+    };
+
+    for (const auto &a : accounts) {
+        auto *item = new QStandardItem();
+        item->setText(a.name);
+        item->setIcon(QIcon(makeAvatar(a.color, a.letter)));
+        m_model->appendRow(item);
+    }
+}