Tweak default UI

It's desktop unless you're building for Android where the default it's
mobile.

You can still manually specify which UI you want and you'll get that
regardless of the platform

Only require KParts if we're building the desktop UI

Two small changes in CI:
 * Stop pretending we have a macOS CI
 * Add Android CI
    - libkexiv2, khtml and kjs would be nice but we don't have Android builds
      yet

.gitlab-ci.yml

@@ -2,6 +2,7 @@ variables:
   DEBIAN_FRONTEND: "noninteractive"
 
 include:
+  - https://invent.kde.org/sysadmin/ci-utilities/raw/master/gitlab-templates/android.yml
   - https://invent.kde.org/sysadmin/ci-utilities/raw/master/gitlab-templates/linux.yml
   - https://invent.kde.org/sysadmin/ci-utilities/raw/master/gitlab-templates/freebsd.yml
 

.kde-ci.yml

@@ -9,13 +9,17 @@ Dependencies:
     'frameworks/ki18n': '@stable'
     'frameworks/kio': '@stable'
     'frameworks/karchive': '@stable'
-    'frameworks/khtml': '@stable'
-    'frameworks/kjs': '@stable'
     'libraries/phonon': '@stable'
-    'graphics/libkexiv2': '@same'
     'graphics/kdegraphics-mobipocket': '@same'
 
-- 'on': ['Linux', 'FreeBSD', 'macOS']
+- 'on': ['Linux', 'FreeBSD']
   'require':
     'frameworks/kactivities': '@stable'
+    'frameworks/khtml': '@stable'
+    'frameworks/kjs': '@stable'
     'frameworks/kpty': '@stable'
+    'graphics/libkexiv2': '@same'
+
+- 'on': ['Android']
+  'require':
+    'frameworks/kirigami': '@stable'

CMakeLists.txt

@@ -11,7 +11,15 @@ project(okular VERSION ${RELEASE_SERVICE_VERSION})
 set(QT_REQUIRED_VERSION "5.12.0") # Remember to update the QT_DEPRECATED_WARNINGS_SINCE below
 set(KF5_REQUIRED_VERSION "5.68.0") # Remember to update the KF_DEPRECATED_WARNINGS_SINCE below
 
-set(OKULAR_UI "desktop" CACHE STRING "Which Okular user interface to build. Possible values: desktop, mobile, both. Default: desktop")
+set(OKULAR_UI "" CACHE STRING "Which Okular user interface to build. Possible values: desktop, mobile, both. Default: desktop (except on Android, where it is 'mobile')")
+
+if(OKULAR_UI STREQUAL "")
+    if(ANDROID)
+        set(OKULAR_UI "mobile")
+    else()
+        set(OKULAR_UI "desktop")
+    endif()
+endif()
 
 if(OKULAR_UI STREQUAL "desktop" OR OKULAR_UI STREQUAL "both")
     set(BUILD_DESKTOP ON)
@@ -94,7 +102,6 @@ find_package(KF5 ${KF5_REQUIRED_VERSION} REQUIRED COMPONENTS
     I18n
     IconThemes
     KIO
-    Parts
     TextWidgets
     ThreadWeaver
     WindowSystem
@@ -104,6 +111,10 @@ find_package(KF5 ${KF5_REQUIRED_VERSION} REQUIRED COMPONENTS
     Wallet
 )
 
+if (BUILD_DESKTOP)
+    find_package(KF5 ${KF5_REQUIRED_VERSION} REQUIRED COMPONENTS Parts)
+endif()
+
 if(KF5Wallet_FOUND)
     add_definitions(-DWITH_KWALLET=1)
 endif()