FileManager: Move the DesktopWidget to its own compilation unit

Applications/FileManager/CMakeLists.txt

@@ -1,4 +1,5 @@
 set(SOURCES
+    DesktopWidget.cpp
     DirectoryView.cpp
     FileUtils.cpp
     main.cpp

Applications/FileManager/DesktopWidget.cpp

@@ -0,0 +1,47 @@
+/*
+ * Copyright (c) 2020, Andreas Kling <kling@serenityos.org>
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright notice, this
+ *    list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright notice,
+ *    this list of conditions and the following disclaimer in the documentation
+ *    and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+ * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+ * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include "DesktopWidget.h"
+#include <LibGUI/Painter.h>
+
+namespace FileManager {
+
+DesktopWidget::DesktopWidget()
+{
+}
+
+DesktopWidget::~DesktopWidget()
+{
+}
+
+void DesktopWidget::paint_event(GUI::PaintEvent& event)
+{
+    GUI::Painter painter(*this);
+    painter.add_clip_rect(event.rect());
+    painter.clear_rect(event.rect(), Color(0, 0, 0, 0));
+}
+
+}

Applications/FileManager/DesktopWidget.h

@@ -0,0 +1,45 @@
+/*
+ * Copyright (c) 2020, Andreas Kling <kling@serenityos.org>
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright notice, this
+ *    list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright notice,
+ *    this list of conditions and the following disclaimer in the documentation
+ *    and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+ * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+ * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#pragma once
+
+#include <LibGUI/Widget.h>
+
+namespace FileManager {
+
+class DesktopWidget final : public GUI::Widget {
+    C_OBJECT(DesktopWidget);
+
+public:
+    virtual ~DesktopWidget() override;
+
+private:
+    virtual void paint_event(GUI::PaintEvent&) override;
+
+    DesktopWidget();
+};
+
+}

Applications/FileManager/main.cpp

@@ -24,6 +24,7 @@
  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
+#include "DesktopWidget.h"
 #include "DirectoryView.h"
 #include "FileUtils.h"
 #include "PropertiesDialog.h"
@@ -120,22 +121,6 @@ int main(int argc, char** argv)
     return run_in_windowed_mode(move(config), initial_location);
 }
 
-class DesktopWidget final : public GUI::Widget {
-    C_OBJECT(DesktopWidget);
-
-private:
-    virtual void paint_event(GUI::PaintEvent& event) override
-    {
-        GUI::Painter painter(*this);
-        painter.add_clip_rect(event.rect());
-        painter.clear_rect(event.rect(), Color(0, 0, 0, 0));
-    }
-
-    DesktopWidget()
-    {
-    }
-};
-
 int run_in_desktop_mode(RefPtr<Core::ConfigFile> config)
 {
     static constexpr const char* process_name = "FileManager (Desktop)";
@@ -148,7 +133,7 @@ int run_in_desktop_mode(RefPtr<Core::ConfigFile> config)
     window->set_window_type(GUI::WindowType::Desktop);
     window->set_has_alpha_channel(true);
 
-    auto& desktop_widget = window->set_main_widget<DesktopWidget>();
+    auto& desktop_widget = window->set_main_widget<FileManager::DesktopWidget>();
     desktop_widget.set_layout<GUI::VerticalBoxLayout>();
 
     auto& directory_view = desktop_widget.add<DirectoryView>(DirectoryView::Mode::Desktop);