Fixed build with Qt versions < 5.12

.appveyor.yml

@@ -1,4 +1,4 @@
-version: 13.10.{build}
+version: 13.11.{build}
 
 configuration:
   - Release

gpxsee.pro

@@ -3,7 +3,7 @@ unix:!macx:!android {
 } else {
     TARGET = GPXSee
 }
-VERSION = 13.10
+VERSION = 13.11
 
 
 QT += core \
@@ -488,7 +488,7 @@ TRANSLATIONS = lang/gpxsee_en.ts \
     lang/gpxsee_ko.ts
 
 macx {
-    RESOURCES += theme-default.qrc
+    RESOURCES += theme-grayscale.qrc
 
     ICON = icons/app/gpxsee.icns
     QMAKE_INFO_PLIST = pkg/mac/Info.plist
@@ -508,7 +508,7 @@ macx {
 }
 
 win32 {
-    RESOURCES += theme-default.qrc
+    RESOURCES += theme-color.qrc
 
     QMAKE_TARGET_DESCRIPTION = GPXSee
     QMAKE_TARGET_COPYRIGHT = Copyright (c) 2023 Martin Tuma
@@ -552,7 +552,7 @@ win32 {
 }
 
 unix:!macx:!android {
-    RESOURCES += theme-unix.qrc
+    RESOURCES += theme-grayscale.qrc
 
     isEmpty(PREFIX):PREFIX = /usr/local
     maps.files = $$files(data/maps/*)
@@ -576,7 +576,7 @@ unix:!macx:!android {
 }
 
 android {
-    RESOURCES += theme-default.qrc
+    RESOURCES += theme-color.qrc
 
     HEADERS += src/GUI/navigationwidget.h
     SOURCES += src/GUI/navigationwidget.cpp

pkg/windows/gpxsee64.nsi

@@ -37,7 +37,7 @@ Unicode true
 ; The name of the installer
 Name "GPXSee"
 ; Program version
-!define VERSION "13.10"
+!define VERSION "13.11"
 
 ; The file to write
 OutFile "GPXSee-${VERSION}_x64.exe"

src/GUI/app.cpp

@@ -70,7 +70,9 @@ App::App(int &argc, char **argv) : QApplication(argc, argv)
 	loadPCSs();
 	Waypoint::loadSymbolIcons(ProgramPaths::symbolsDir());
 
+#if QT_VERSION >= QT_VERSION_CHECK(5, 12, 0)
 	QIcon::setFallbackThemeName(APP_NAME);
+#endif // QT 5.12
 
 	_gui = new GUI();
 

src/GUI/optionsdialog.cpp

@@ -748,6 +748,7 @@ QWidget *OptionsDialog::createSystemPage()
 	QWidget *systemTab = new QWidget();
 	QFormLayout *systemTabLayout = new QFormLayout();
 	systemTabLayout->addRow(tr("Image cache size:"), _pixmapCache);
+	systemTabLayout->addRow(tr("DEM cache size:"), _demCache);
 	systemTabLayout->addRow(tr("Connection timeout:"), _connectionTimeout);
 	systemTabLayout->addWidget(_enableHTTP2);
 	systemTabLayout->addWidget(_useOpenGL);