Fix desktop hover and emoji playback; share Android chat background

tools/chatgui/src/chatview.cpp

@@ -1,5 +1,7 @@
 #include "chatview.h"
 #include "messagedelegate.h"
+#include "emoji.h"
+#include "debug_ui.h"
 #include <QPainter>
 #include <QClipboard>
 #include <QApplication>
@@ -8,6 +10,20 @@
 #include <QKeyEvent>
 #include <QScrollBar>
 
+// Текст и реакции сообщения используют общий набор анимированных значков.
+static QSet<QString> animatedEmojiPaths(const QModelIndex &index) {
+    QSet<QString> paths;
+    const QString text = index.data(MsgTextRole).toString();
+    for (auto it = g_animatedEmojiMap.constBegin(); it != g_animatedEmojiMap.constEnd(); ++it) {
+        if (text.contains(it.key())) paths.insert(it.value());
+    }
+    for (const auto &reaction : index.data(MsgReactionsRole).toList()) {
+        const QString path = g_animatedEmojiMap.value(reaction.toMap().value("emoji").toString());
+        if (!path.isEmpty()) paths.insert(path);
+    }
+    return paths;
+}
+
 ChatView::ChatView(QWidget *parent)
     : QListView(parent)
 {
@@ -65,6 +81,24 @@ void ChatView::paintEvent(QPaintEvent *event) {
         p.drawTiledPixmap(viewport()->rect(), m_background);
     }
     QListView::paintEvent(event);
+    QSet<QString> visible;
+    if (model()) {
+        const QRect area = viewport()->rect();
+        for (int row = 0; row < model()->rowCount(); ++row) {
+            const QModelIndex index = model()->index(row, 0);
+            if (!visualRect(index).intersects(area)) continue;
+            const QString message = QStringLiteral("%1/%2/%3/")
+                .arg(index.data(MsgChannelIdRole).toString()).arg(index.data(MsgIdRole).toLongLong())
+                .arg(index.data(MsgIsOutgoingRole).toInt());
+            for (const auto &path : animatedEmojiPaths(index)) visible.insert(message + path);
+        }
+    }
+    const int appeared = (visible - m_visibleAnimations).size();
+    m_visibleAnimations = visible;
+    if (appeared > 0) {
+        GUI_DEBUG("ChatView: visible animation trigger appeared=%d visible=%d", appeared, (int)visible.size());
+        emit animationTriggered();
+    }
 }
 
 bool ChatView::isRowSelected(const QModelIndex &idx) const {
@@ -95,6 +129,13 @@ void ChatView::mousePressEvent(QMouseEvent *event) {
     QListView::mousePressEvent(event);
 }
 
+bool ChatView::viewportEvent(QEvent *event) {
+    if (event->type() == QEvent::Leave && m_lastHovered.isValid()) {
+        m_lastHovered = QPersistentModelIndex();
+    }
+    return QListView::viewportEvent(event);
+}
+
 void ChatView::mouseMoveEvent(QMouseEvent *event) {
     if (!m_selecting && m_pressIndex.isValid()) {
         int dx = event->pos().x() - m_pressPos.x();
@@ -115,7 +156,11 @@ void ChatView::mouseMoveEvent(QMouseEvent *event) {
         QModelIndex idx = indexAt(viewport()->mapFrom(this, event->pos()));
         if (idx != QModelIndex(m_lastHovered)) {
             m_lastHovered = idx;
-            emit hoveredIndexChanged(idx);
+            const auto paths = animatedEmojiPaths(idx);
+            if (!paths.isEmpty()) {
+                GUI_DEBUG("ChatView: hover animation trigger row=%d icons=%d", idx.row(), (int)paths.size());
+                emit animationTriggered();
+            }
         }
     }
     if (!m_selecting) {