CMake: Add fileoverlay icons for cmake project files

Change-Id: Id9b8aa9b1902e6f88ca4e8bde2e5f20281a77437
Reviewed-by: Tobias Hunger <tobias.hunger@qt.io>
Reviewed-by: Alessandro Portale <alessandro.portale@qt.io>

src/plugins/cmakeprojectmanager/cmakeproject.qrc

@@ -1,5 +1,7 @@
 <RCC>
     <qresource prefix="/cmakeproject">
         <file>CMakeProjectManager.mimetypes.xml</file>
+        <file>images/fileoverlay_cmake.png</file>
+        <file>images/fileoverlay_cmake@2x.png</file>
     </qresource>
 </RCC>

src/plugins/cmakeprojectmanager/cmakeprojectconstants.h

@@ -54,5 +54,8 @@ const char CMAKE_SETTINGSPAGE_ID[] = "Z.CMake";
 // Snippets
 const char CMAKE_SNIPPETS_GROUP_ID[] = "CMake";
 
+// Icons
+const char FILEOVERLAY_CMAKE[] = ":/cmakeproject/images/fileoverlay_cmake.png";
+
 } // namespace Constants
 } // namespace CMakeProjectManager

src/plugins/cmakeprojectmanager/cmakeprojectplugin.cpp

@@ -37,9 +37,11 @@
 #include "cmaketoolmanager.h"
 #include "cmakekitinformation.h"
 
-#include <utils/mimetypes/mimedatabase.h>
+#include <coreplugin/fileiconprovider.h>
 #include <projectexplorer/kitmanager.h>
 
+#include <utils/mimetypes/mimedatabase.h>
+
 using namespace CMakeProjectManager::Internal;
 
 bool CMakeProjectPlugin::initialize(const QStringList & /*arguments*/, QString *errorMessage)
@@ -47,6 +49,9 @@ bool CMakeProjectPlugin::initialize(const QStringList & /*arguments*/, QString *
     Q_UNUSED(errorMessage)
     Utils::MimeDatabase::addMimeTypes(QLatin1String(":cmakeproject/CMakeProjectManager.mimetypes.xml"));
 
+    Core::FileIconProvider::registerIconOverlayForSuffix(Constants::FILEOVERLAY_CMAKE, "cmake");
+    Core::FileIconProvider::registerIconOverlayForFilename(Constants::FILEOVERLAY_CMAKE, "CMakeLists.txt");
+
     addAutoReleasedObject(new Internal::CMakeSnippetProvider);
     addAutoReleasedObject(new CMakeSettingsPage);
     addAutoReleasedObject(new CMakeManager);