chore: add applet-widget example

it's useful to debug.

pms:TASK-365879

Author: 18202781743

example/CMakeLists.txt

@@ -5,6 +5,7 @@
 find_package(Qt${QT_VERSION_MAJOR} ${REQUIRED_QT_VERSION} REQUIRED COMPONENTS Core Gui Quick)
 
 add_subdirectory(applet-example)
+add_subdirectory(applet-widget-example)
 add_subdirectory(applet-example-data)
 add_subdirectory(containment-example)
 add_subdirectory(panel-example)

example/applet-widget-example/CMakeLists.txt

@@ -0,0 +1,19 @@
+# SPDX-FileCopyrightText: 2024 UnionTech Software Technology Co., Ltd.
+#
+# SPDX-License-Identifier: GPL-3.0-or-later
+
+find_package(Qt${QT_VERSION_MAJOR} ${REQUIRED_QT_VERSION} REQUIRED COMPONENTS Widgets)
+find_package(Dtk${DTK_VERSION_MAJOR} REQUIRED COMPONENTS Widget)
+
+add_library(ds-example-applet-widget SHARED
+    exampleapplet.h
+    exampleapplet.cpp
+)
+
+target_link_libraries(ds-example-applet-widget PRIVATE
+    dde-shell-frame
+    Qt${QT_VERSION_MAJOR}::Widgets
+    Dtk${DTK_VERSION_MAJOR}::Widget
+)
+
+ds_install_package(PACKAGE org.deepin.ds.example.applet-widget TARGET ds-example-applet-widget)

example/applet-widget-example/exampleapplet.cpp

@@ -0,0 +1,41 @@
+// SPDX-FileCopyrightText: 2024 UnionTech Software Technology Co., Ltd.
+//
+// SPDX-License-Identifier: GPL-3.0-or-later
+
+#include "exampleapplet.h"
+
+#include "pluginfactory.h"
+
+#include <DIconButton>
+#include <DIconTheme>
+#include <dplatformwindowhandle.h>
+
+#include <QVBoxLayout>
+#include <QWidget>
+
+DGUI_USE_NAMESPACE
+DWIDGET_USE_NAMESPACE
+
+WidgetExampleApplet::WidgetExampleApplet(QObject *parent)
+    : DApplet(parent)
+{
+}
+
+bool WidgetExampleApplet::init()
+{
+    auto widget = new QWidget();
+    DPlatformWindowHandle handle(widget);
+    widget->setFixedSize(QSize(200, 200));
+    auto layout = new QVBoxLayout(widget);
+    auto btn = new DIconButton();
+    btn->setIcon(DIconTheme::findQIcon("deepin-home"));
+    btn->setIconSize(QSize(36, 36));
+    layout->addWidget(btn);
+    widget->show();
+
+    return DApplet::init();
+}
+
+D_APPLET_CLASS(WidgetExampleApplet)
+
+#include "exampleapplet.moc"

example/applet-widget-example/exampleapplet.h

@@ -0,0 +1,18 @@
+// SPDX-FileCopyrightText: 2024 UnionTech Software Technology Co., Ltd.
+//
+// SPDX-License-Identifier: GPL-3.0-or-later
+
+#pragma once
+
+#include "applet.h"
+
+DS_USE_NAMESPACE
+
+class WidgetExampleApplet : public DApplet
+{
+    Q_OBJECT
+public:
+    explicit WidgetExampleApplet(QObject *parent = nullptr);
+
+    virtual bool init() override;
+};

example/applet-widget-example/package/metadata.json

@@ -0,0 +1,7 @@
+{
+    "Plugin": {
+        "Version": "1.0",
+        "Id": "org.deepin.ds.example.applet-widget",
+        "Parent": "org.deepin.ds.example.containment"
+    }
+}