From 46fbb0e74990e1d5909fdef12d8e28da484db7e0 Mon Sep 17 00:00:00 2001
From: Nicolas Werner <nicolas.werner@hotmail.de>
Date: Sat, 19 Feb 2022 02:49:58 +0100
Subject: Use ListView without scrollview for messages

That way we can autohide the scollbar if needed, it should fix some
jumping issues, it makes it possible to flick on mobile, etc.

Some related bugs:

https://bugreports.qt.io/browse/QTBUG-75223
https://bugreports.qt.io/browse/QTBUG-44902
---
 src/ui/NhekoEventObserver.cpp | 61 +++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 61 insertions(+)
 create mode 100644 src/ui/NhekoEventObserver.cpp

(limited to 'src/ui/NhekoEventObserver.cpp')

diff --git a/src/ui/NhekoEventObserver.cpp b/src/ui/NhekoEventObserver.cpp
new file mode 100644
index 00000000..5e67cec4
--- /dev/null
+++ b/src/ui/NhekoEventObserver.cpp
@@ -0,0 +1,61 @@
+// SPDX-FileCopyrightText: 2021 Nheko Contributors
+// SPDX-FileCopyrightText: 2022 Nheko Contributors
+//
+// SPDX-License-Identifier: GPL-3.0-or-later
+
+#include "NhekoEventObserver.h"
+
+#include <QMouseEvent>
+
+#include "Logging.h"
+
+NhekoEventObserver::NhekoEventObserver(QQuickItem *parent)
+  : QQuickItem(parent)
+{
+    setFiltersChildMouseEvents(true);
+}
+
+bool
+NhekoEventObserver::childMouseEventFilter(QQuickItem * /*item*/, QEvent *event)
+{
+    // nhlog::ui()->debug("Touched {}", item->metaObject()->className());
+
+    auto setTouched = [this](bool touched) {
+        if (touched != this->wasTouched_) {
+            this->wasTouched_ = touched;
+            emit wasTouchedChanged();
+        }
+    };
+
+    // see
+    // https://code.qt.io/cgit/qt/qtdeclarative.git/tree/src/quicktemplates2/qquickscrollview.cpp?id=7f29e89c26ae2babc358b1c4e6f965af6ec759f4#n471
+    switch (event->type()) {
+    case QEvent::TouchBegin:
+    case QEvent::TouchEnd:
+        setTouched(true);
+        break;
+
+    case QEvent::MouseButtonPress:
+        if (static_cast<QMouseEvent *>(event)->source() == Qt::MouseEventNotSynthesized) {
+            setTouched(false);
+        }
+        break;
+
+    case QEvent::MouseMove:
+    case QEvent::MouseButtonRelease:
+        if (static_cast<QMouseEvent *>(event)->source() == Qt::MouseEventNotSynthesized)
+            setTouched(false);
+        break;
+
+    case QEvent::HoverEnter:
+    case QEvent::HoverMove:
+    case QEvent::Wheel:
+        setTouched(false);
+        break;
+
+    default:
+        break;
+    }
+
+    return false;
+}
-- 
cgit 1.5.1