Double number of projects kept on welcome page, make configurable

Because 10 isn't enough!

Author: nyalldawson

resources/qgis_global_settings.ini

@@ -30,6 +30,9 @@ connections-xyz\OpenStreetMap\zmin=0
 
 [app]
 
+# Maximum number of recent projects to show on the welcome page
+maxRecentProjects=20
+
 # Minimum time (in seconds) for a background task to execute in order for a system
 # notification to be shown when the task completes.
 minTaskLengthForSystemNotification=5

src/app/qgisapp.cpp

@@ -4144,9 +4144,11 @@ void QgisApp::saveRecentProjectPath( bool savePreviewImage )
   // Insert this file to the list
   mRecentProjects.insert( projectData.pin ? 0 : nonPinnedPos, projectData );
 
-  // Keep the list to 10 items by trimming excess off the bottom
+  const uint maxProjects = QgsSettings().value( QStringLiteral( "maxRecentProjects" ), 20, QgsSettings::App ).toUInt();
+
+  // Keep the list to maxProjects items by trimming excess off the bottom
   // And remove the associated image
-  while ( mRecentProjects.count() > 10 + pinnedCount )
+  while ( mRecentProjects.count() > maxProjects + pinnedCount )
   {
     QFile( mRecentProjects.takeLast().previewImagePath ).remove();
   }