[graphics/koko] src: Show cut files with opacity

Git commit 45b8e1364fd31b5a30480c1e5992397d398e611c by Oliver Beard.
Committed on 30/07/2026 at 22:13.
Pushed by olib into branch 'master'.

Show cut files with opacity

Add a class, `CutFileHelper` that the gallery instantiates to know if urls are cut via the clipboard mime type `application/x-kde-cutselection` with data `1`.

A delegate can check whether its url exists in the helper, and show itself with opacity to indicate cutting.

M  +1    -0    src/CMakeLists.txt
A  +43   -0    src/cutfilehelper.cpp     [License: LGPL(v2.1+)]
A  +30   -0    src/cutfilehelper.h     [License: LGPL(v2.1+)]
M  +4    -0    src/qml/gallery/GalleryDelegate.qml
M  +5    -0    src/qml/gallery/GalleryPage.qml

https://invent.kde.org/graphics/koko/-/commit/45b8e1364fd31b5a30480c1e5992397d398e611c

diff --git a/src/CMakeLists.txt b/src/CMakeLists.txt
index fe199d90..6703fa0d 100644
--- a/src/CMakeLists.txt
+++ b/src/CMakeLists.txt
@@ -32,6 +32,7 @@ qt_add_library(koko_static STATIC
     printerhelper.cpp
     filedialoghelper.cpp
     resizehelper.cpp
+    cutfilehelper.cpp
 )
 
 kconfig_target_kcfg_file(koko_static
diff --git a/src/cutfilehelper.cpp b/src/cutfilehelper.cpp
new file mode 100644
index 00000000..d296ea06
--- /dev/null
+++ b/src/cutfilehelper.cpp
@@ -0,0 +1,43 @@
+/*
+    SPDX-FileCopyrightText: 2026 Oliver Beard <[email protected]>
+    SPDX-License-Identifier: LGPL-2.1-or-later
+*/
+
+#include <QClipboard>
+#include <QGuiApplication>
+#include <QMimeData>
+#include <QUrl>
+
+#include "cutfilehelper.h"
+
+CutFileHelper::CutFileHelper(QObject *parent)
+    : QObject(parent)
+{
+    QClipboard *clipboard = QGuiApplication::clipboard();
+    connect(clipboard, &QClipboard::dataChanged, this, &CutFileHelper::refresh);
+
+    refresh();
+}
+
+QList<QUrl> CutFileHelper::urls() const
+{
+    return m_urls;
+}
+
+void CutFileHelper::refresh()
+{
+    const QMimeData *mimeData = QGuiApplication::clipboard()->mimeData();
+
+    QList<QUrl> urls;
+
+    if (mimeData) {
+        static const QString cutSelectionMime = QLatin1String("application/x-kde-cutselection");
+
+        if (mimeData->hasFormat(cutSelectionMime) && mimeData->data(cutSelectionMime).trimmed() == "1") {
+            urls = mimeData->urls();
+        }
+    }
+
+    m_urls = std::move(urls);
+    Q_EMIT urlsChanged();
+}
diff --git a/src/cutfilehelper.h b/src/cutfilehelper.h
new file mode 100644
index 00000000..a5896037
--- /dev/null
+++ b/src/cutfilehelper.h
@@ -0,0 +1,30 @@
+/*
+    SPDX-FileCopyrightText: 2026 Oliver Beard <[email protected]>
+    SPDX-License-Identifier: LGPL-2.1-or-later
+*/
+
+#pragma once
+
+#include <QObject>
+#include <qqmlregistration.h>
+
+class CutFileHelper : public QObject
+{
+    Q_OBJECT
+    QML_ELEMENT
+
+    Q_PROPERTY(QList<QUrl> urls READ urls NOTIFY urlsChanged FINAL)
+
+public:
+    explicit CutFileHelper(QObject *parent = nullptr);
+
+    [[nodiscard]] QList<QUrl> urls() const;
+
+Q_SIGNALS:
+    void urlsChanged();
+
+private:
+    void refresh();
+
+    QList<QUrl> m_urls;
+};
diff --git a/src/qml/gallery/GalleryDelegate.qml b/src/qml/gallery/GalleryDelegate.qml
index 659c26d4..dbe3b0cf 100644
--- a/src/qml/gallery/GalleryDelegate.qml
+++ b/src/qml/gallery/GalleryDelegate.qml
@@ -24,6 +24,8 @@ Controls.ItemDelegate {
     required property bool selected
     required property url url
 
+    required property bool isCut
+
     required property bool selectionMode
 
     property alias thumbnailPriority: image.priority
@@ -93,6 +95,8 @@ Controls.ItemDelegate {
                 }
             }
 
+            opacity: root.isCut ? 0.6 : 1
+
             fileItem: root.fileItem
         }
 
diff --git a/src/qml/gallery/GalleryPage.qml b/src/qml/gallery/GalleryPage.qml
index 2eba37a9..382095a7 100644
--- a/src/qml/gallery/GalleryPage.qml
+++ b/src/qml/gallery/GalleryPage.qml
@@ -635,6 +635,10 @@ Kirigami.ScrollablePage {
         model: gallerySortFilterProxyModel
     }
 
+    Koko.CutFileHelper {
+        id: cutFileHelper
+    }
+
     bottomPadding: inlineStatusBar.effectiveHeight
 
     GridView {
@@ -756,6 +760,7 @@ Kirigami.ScrollablePage {
 
             highlighted: gridView.currentIndex == index
             selected: selectionModel.selectedIndexes.includes(gridView.model.index(index, 0)) || (delegateDropAreaLoader.item?.containsDrag ?? false)
+            isCut: cutFileHelper.urls.some(cutUrl => cutUrl.toString() === url.toString())
             selectionMode: page.selectionMode
 
             TapHandler {