Relocate files from separate CMake files to the main one

Removed useless CMakefiles and move their contents to the main
CMakeLists file.

Task-number: QTBUG-137566
Change-Id: Ibeb162ce43243d9af7732f39935325cbb52ecdec
Reviewed-by: Volker Hilsheimer <[email protected]>

12 files changed, 52 insertions, 110 deletions

diff --git a/src/widgets/CMakeLists.txt b/src/widgets/CMakeLists.txt
index 185075547da..946f95ce542 100644
--- a/src/widgets/CMakeLists.txt
+++ b/src/widgets/CMakeLists.txt
@@ -926,20 +926,4 @@ endif()
 
 if(QT_FEATURE_doc_snippets)
     add_subdirectory(doc/snippets)
-    add_subdirectory(doc/snippets/customviewstyle)
-    if (QT_FEATURE_filedialog)
-        add_subdirectory(doc/snippets/filedialogurls)
-    endif()
-    if (QT_FEATURE_graphicsview)
-        add_subdirectory(doc/snippets/graphicssceneadditem)
-    endif()
-    if(QT_FEATURE_opengl AND QT_FEATURE_printdialog)
-        add_subdirectory(doc/snippets/graphicsview)
-    endif()
-    if (QT_FEATURE_mdiarea)
-        add_subdirectory(doc/snippets/mdiarea)
-    endif()
-    if (QT_FEATURE_scrollarea)
-        add_subdirectory(doc/snippets/myscrollarea)
-    endif()
 endif()
diff --git a/src/widgets/doc/snippets/CMakeLists.txt b/src/widgets/doc/snippets/CMakeLists.txt
index e0209fef5c5..8c6e6dda6e6 100644
--- a/src/widgets/doc/snippets/CMakeLists.txt
+++ b/src/widgets/doc/snippets/CMakeLists.txt
@@ -2,6 +2,9 @@
 # SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause
 
 add_library(widgets_snippets OBJECT
+    customstyle/customstyle.cpp
+    customstyle/main.cpp
+    customviewstyle/customviewstyle.cpp
     dialogs/dialogs.cpp
     dockwidgets/mainwindow.cpp
     itemselection/main.cpp
@@ -50,6 +53,41 @@ qt_internal_extend_target(widgets_snippets
         qrhiwidget/rhiwidgetintro.cpp
 )
 
+qt_internal_extend_target(widgets_snippets CONDITION QT_FEATURE_filedialog
+    SOURCES
+        filedialogurls/filedialogurls.cpp
+)
+
+qt_internal_extend_target(widgets_snippets CONDITION QT_FEATURE_graphicsview
+    SOURCES
+        graphicssceneadditem/graphicssceneadditemsnippet.cpp
+        graphicsview/graphicsview_snippet.cpp
+)
+
+qt_internal_extend_target(widgets_snippets CONDITION QT_FEATURE_opengl AND QT_FEATURE_printsupport
+    LIBRARIES
+        Qt::OpenGL
+        Qt::OpenGLWidgets
+        Qt::PrintSupport
+    SOURCES
+        graphicsview/graphicsview.cpp
+)
+
+qt_internal_extend_target(widgets_snippets CONDITION QT_FEATURE_mdiarea
+    SOURCES
+        mdiarea/mdiareasnippets.cpp
+)
+
+qt_internal_extend_target(widgets_snippets CONDITION QT_FEATURE_scrollarea
+    SOURCES
+        myscrollarea/myscrollarea.cpp
+)
+
+qt_internal_extend_target(widgets_snippets CONDITION QT_FEATURE_spinbox AND QT_FEATURE_itemviews
+    SOURCES
+        qitemdelegate/spinbox-delegate.cpp
+)
+
 set_target_properties(widgets_snippets PROPERTIES COMPILE_OPTIONS "-w")
 
 if ("${CMAKE_CXX_COMPILE_FEATURES}" MATCHES "cxx_std_23")
diff --git a/src/widgets/doc/snippets/customstyle/customstyle.h b/src/widgets/doc/snippets/customstyle/customstyle.h
index 370065c2b33..ac1c961d73d 100644
--- a/src/widgets/doc/snippets/customstyle/customstyle.h
+++ b/src/widgets/doc/snippets/customstyle/customstyle.h
@@ -12,7 +12,7 @@ class CustomStyle : public QProxyStyle
     Q_OBJECT
 
 public:
-    CustomStyle(const QWidget *widget);
+    explicit CustomStyle(const QWidget *widget = nullptr);
     ~CustomStyle() {}
 
     void drawPrimitive(PrimitiveElement element, const QStyleOption *option,
diff --git a/src/widgets/doc/snippets/customviewstyle/CMakeLists.txt b/src/widgets/doc/snippets/customviewstyle/CMakeLists.txt
deleted file mode 100644
index f37de58edc2..00000000000
--- a/src/widgets/doc/snippets/customviewstyle/CMakeLists.txt
+++ /dev/null
@@ -1,16 +0,0 @@
-# Copyright (C) 2022 The Qt Company Ltd.
-# SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause
-
-add_library(widgets_customviewstyle_snippets OBJECT
-    ../customstyle/customstyle.h
-    ../customstyle/customstyle.cpp
-    customviewstyle.cpp
-)
-
-target_link_libraries(widgets_customviewstyle_snippets PRIVATE
-    Qt::Core
-    Qt::Gui
-    Qt::Widgets
-)
-
-set_target_properties(widgets_customviewstyle_snippets PROPERTIES UNITY_BUILD OFF)
diff --git a/src/widgets/doc/snippets/filedialogurls/CMakeLists.txt b/src/widgets/doc/snippets/filedialogurls/CMakeLists.txt
deleted file mode 100644
index 4c64ff3288c..00000000000
--- a/src/widgets/doc/snippets/filedialogurls/CMakeLists.txt
+++ /dev/null
@@ -1,12 +0,0 @@
-# Copyright (C) 2022 The Qt Company Ltd.
-# SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause
-
-add_library(widgets_filedialogurl_snippets OBJECT
-    filedialogurls.cpp
-)
-
-target_link_libraries(widgets_filedialogurl_snippets PRIVATE
-    Qt::Core
-    Qt::Gui
-    Qt::Widgets
-)
diff --git a/src/widgets/doc/snippets/graphicssceneadditem/CMakeLists.txt b/src/widgets/doc/snippets/graphicssceneadditem/CMakeLists.txt
deleted file mode 100644
index a2d391d6298..00000000000
--- a/src/widgets/doc/snippets/graphicssceneadditem/CMakeLists.txt
+++ /dev/null
@@ -1,12 +0,0 @@
-# Copyright (C) 2022 The Qt Company Ltd.
-# SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause
-
-add_library(widgets_graphicssceneadditem_snippets OBJECT
-    graphicssceneadditemsnippet.cpp
-)
-
-target_link_libraries(widgets_graphicssceneadditem_snippets PRIVATE
-    Qt::Core
-    Qt::Gui
-    Qt::Widgets
-)
diff --git a/src/widgets/doc/snippets/graphicsview/CMakeLists.txt b/src/widgets/doc/snippets/graphicsview/CMakeLists.txt
deleted file mode 100644
index e395eda0450..00000000000
--- a/src/widgets/doc/snippets/graphicsview/CMakeLists.txt
+++ /dev/null
@@ -1,15 +0,0 @@
-# Copyright (C) 2022 The Qt Company Ltd.
-# SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause
-
-add_library(widgets_graphicsview_snippets OBJECT
-    graphicsview.cpp
-)
-
-target_link_libraries(widgets_graphicsview_snippets PRIVATE
-    Qt::Core
-    Qt::Gui
-    Qt::Widgets
-    Qt::OpenGL
-    Qt::OpenGLWidgets
-    Qt::PrintSupport
-)
diff --git a/src/widgets/doc/snippets/graphicsview/graphicsview.cpp b/src/widgets/doc/snippets/graphicsview/graphicsview.cpp
index e66d2d84fb2..2d76f671b1b 100644
--- a/src/widgets/doc/snippets/graphicsview/graphicsview.cpp
+++ b/src/widgets/doc/snippets/graphicsview/graphicsview.cpp
@@ -1,5 +1,12 @@
 // Copyright (C) 2016 The Qt Company Ltd.
 // SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause
+
+#include <QtPrintSupport/qtprintsupportglobal.h>
+
+#include <QtPrintSupport/qabstractprintdialog.h>
+
+#if QT_CONFIG(printdialog)
+
 #include <QStandardItem>
 #include <QtCore/qmimedata.h>
 #include <QtGui/qdrag.h>
@@ -101,3 +108,5 @@ gl->setFormat(format);
 view.setViewport(gl);
 //! [6]
 }
+
+#endif // QT_CONFIG(printdialog)
diff --git a/src/widgets/doc/snippets/graphicsview/graphicsview_snippet.cpp b/src/widgets/doc/snippets/graphicsview/graphicsview_snippet.cpp
index 303f2fa9e24..b9a1034ffa9 100644
--- a/src/widgets/doc/snippets/graphicsview/graphicsview_snippet.cpp
+++ b/src/widgets/doc/snippets/graphicsview/graphicsview_snippet.cpp
@@ -1,16 +1,18 @@
 // Copyright (C) 2020 The Qt Company Ltd.
 // SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause
 
+#include <QGraphicsView>
+
 //! [2]
 class View : public QGraphicsView
 {
 Q_OBJECT
-    ...
+    //...
 public slots:
     void zoomIn() { scale(1.2, 1.2); }
     void zoomOut() { scale(1 / 1.2, 1 / 1.2); }
     void rotateLeft() { rotate(-10); }
     void rotateRight() { rotate(10); }
-    ...
+    //...
 };
 //! [2]
diff --git a/src/widgets/doc/snippets/mdiarea/CMakeLists.txt b/src/widgets/doc/snippets/mdiarea/CMakeLists.txt
deleted file mode 100644
index 3edb2d1b365..00000000000
--- a/src/widgets/doc/snippets/mdiarea/CMakeLists.txt
+++ /dev/null
@@ -1,12 +0,0 @@
-# Copyright (C) 2022 The Qt Company Ltd.
-# SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause
-
-add_library(widgets_mdiarea_snippets OBJECT
-    mdiareasnippets.cpp
-)
-
-target_link_libraries(widgets_mdiarea_snippets PRIVATE
-    Qt::Core
-    Qt::Gui
-    Qt::Widgets
-)
diff --git a/src/widgets/doc/snippets/myscrollarea/CMakeLists.txt b/src/widgets/doc/snippets/myscrollarea/CMakeLists.txt
deleted file mode 100644
index 9e7e14dc8d9..00000000000
--- a/src/widgets/doc/snippets/myscrollarea/CMakeLists.txt
+++ /dev/null
@@ -1,12 +0,0 @@
-# Copyright (C) 2022 The Qt Company Ltd.
-# SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause
-
-add_library(widgets_myscrollarea_snippets OBJECT
-    myscrollarea.cpp
-)
-
-target_link_libraries(widgets_myscrollarea_snippets PRIVATE
-    Qt::Core
-    Qt::Gui
-    Qt::Widgets
-)
diff --git a/src/widgets/doc/snippets/qitemdelegate/CMakeLists.txt b/src/widgets/doc/snippets/qitemdelegate/CMakeLists.txt
deleted file mode 100644
index 9aad7026c7d..00000000000
--- a/src/widgets/doc/snippets/qitemdelegate/CMakeLists.txt
+++ /dev/null
@@ -1,12 +0,0 @@
-# Copyright (C) 2023 The Qt Company Ltd.
-# SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause
-
-add_library(widgets_qitemdelegate_snippets OBJECT
-    spinbox-delegate.cpp
-)
-
-target_link_libraries(widgets_qitemdelegate_snippets PRIVATE
-    Qt::Core
-    Qt::Gui
-    Qt::Widgets
-)