Preview task-group selections until Meta is released

2026-09-11 10:59:54 +00:00
parent ccd0161398
commit 0ec628e786
18 changed files with 867 additions and 21 deletions
@@ -0,0 +1,53 @@
+// SPDX-License-Identifier: MIT
+
+#include "windowpreview.h"
+#include "previewplacement.h"
+
+#include <QGuiApplication>
+#include <QQmlComponent>
+#include <QScreen>
+#include <abstracttasksmodel.h>
+
+WindowPreview::WindowPreview()
+{
+    QQmlComponent component(&m_engine, QUrl(QStringLiteral("qrc:/Preview.qml")));
+    m_window.reset(qobject_cast<QQuickWindow *>(component.create()));
+    if (!m_window) {
+        qFatal("Cannot create window preview: %s", qPrintable(component.errorString()));
+    }
+}
+
+void WindowPreview::show(const QModelIndex &task, int panelLocation)
+{
+    const QVariantList ids = task.data(TaskManager::AbstractTasksModel::WinIdList).toList();
+    m_window->setProperty("windowId", ids.isEmpty() ? QString() : ids.first().toString());
+    m_window->setProperty("windowTitle", task.data(Qt::DisplayRole).toString());
+    m_window->setProperty("position", task.parent().isValid() ? task.row() + 1 : 1);
+    m_window->setProperty("count", task.parent().isValid() ? task.model()->rowCount(task.parent()) : 1);
+    m_panelLocation = panelLocation;
+    // Plasma sizes the dialog from mainItem when it becomes visible.
+    m_window->show();
+
+    setAnchor({});
+}
+
+void WindowPreview::setAnchor(const QRect &button)
+{
+    if (!m_window->isVisible()) {
+        return;
+    }
+    QScreen *screen = button.isValid() ? QGuiApplication::screenAt(button.center()) : nullptr;
+    if (!screen) {
+        screen = QGuiApplication::primaryScreen();
+    }
+    if (screen) {
+        m_window->setScreen(screen);
+        m_window->setPosition(previewPosition(button, screen->availableGeometry(), m_window->size(), m_panelLocation));
+    }
+}
+
+void WindowPreview::hide()
+{
+    m_window->hide();
+    m_window->setProperty("windowId", QString());
+}