Add SHIFT wallpaper as the shell default

Add a wallpapers/SHIFT package with light and dark images. Set
Image=SHIFT in the look-and-feel defaults.

Plasma's org.kde.image backend requires a directory URL, not a
bare package ID, when writing Image= in a layout.js. Use
configure_file to stamp the resolved KDE_INSTALL_WALLPAPERDIR
path into the installed layout.js at build time.

CMakeLists.txt

@@ -138,12 +138,19 @@ include(CheckIncludeFiles)
 
 ecm_find_qmlmodule(org.kde.pipewire 0.1)
 
-plasma_install_package(lookandfeel org.kde.breeze.mobile look-and-feel lookandfeel)
-plasma_install_package(shell org.kde.plasma.mobileshell shells)
+set(SHIFT_DEFAULT_WALLPAPER_URL "file://${KDE_INSTALL_FULL_WALLPAPERDIR}/SHIFT/")
+set(SHIFT_SHELL_PACKAGE_DIR "${CMAKE_CURRENT_BINARY_DIR}/shell")
+file(REMOVE_RECURSE "${SHIFT_SHELL_PACKAGE_DIR}")
+file(COPY shell/ DESTINATION "${SHIFT_SHELL_PACKAGE_DIR}" PATTERN "layout.js.in" EXCLUDE)
+configure_file(shell/contents/layout.js.in "${SHIFT_SHELL_PACKAGE_DIR}/contents/layout.js" @ONLY)
+
+plasma_install_package(lookandfeel org.shift.mobile look-and-feel lookandfeel)
+plasma_install_package(${SHIFT_SHELL_PACKAGE_DIR} org.kde.plasma.mobileshell shells)
 
 add_subdirectory(bin)
 add_subdirectory(color-schemes)
 add_subdirectory(icons)
+add_subdirectory(wallpapers)
 add_subdirectory(components)
 add_subdirectory(containments)
 add_subdirectory(devices)

lookandfeel/contents/defaults

@@ -18,7 +18,7 @@ Theme=breeze-dark
 name=default
 
 [Wallpaper]
-Image=Next
+Image=SHIFT
 
 # Set default cursor theme
 [kcminputrc][Mouse]

shell/contents/layout.js.in

@@ -0,0 +1,24 @@
+// SPDX-FileCopyrightText: 2014 Aaron J. Seigo
+// SPDX-FileCopyrightText: 2014-2019 Marco Martin <mart@kde.org>
+// SPDX-FileCopyrightText: 2015-2021 Bhushan Shah <bshah@kde.org>
+// SPDX-FileCopyrightText: 2021 Aleix Pol <apol@kde.org>
+// SPDX-License-Identifier: GPL-2.0-or-later
+
+// Load panel layout
+loadTemplate("org.kde.plasma.mobile.defaultNavigationPanel");
+loadTemplate("org.kde.plasma.mobile.defaultStatusBar");
+
+// Set wallpaper plugin
+var shiftDefaultWallpaperUrl = "@SHIFT_DEFAULT_WALLPAPER_URL@";
+var desktopsArray = desktopsForActivity(currentActivity());
+for (var j = 0; j < desktopsArray.length; j++) {
+    desktopsArray[j].wallpaperPlugin = "org.kde.image";
+    desktopsArray[j].currentConfigGroup = ["Wallpaper", "org.kde.image", "General"];
+    desktopsArray[j].writeConfig("Image", shiftDefaultWallpaperUrl);
+
+    if (j == 0) {
+        // Add meta shortcut
+        desktopsArray[0].currentConfigGroup = ["Shortcuts"]
+        desktopsArray[0].writeConfig("global", "Meta+F1")
+    }
+}

wallpapers/CMakeLists.txt

@@ -0,0 +1,7 @@
+# SPDX-FileCopyrightText: 2026 SHIFT Contributors
+# SPDX-License-Identifier: EUPL-1.2
+
+install(DIRECTORY SHIFT
+    DESTINATION ${KDE_INSTALL_WALLPAPERDIR}
+    PATTERN "*.license" EXCLUDE
+)

wallpapers/SHIFT/contents/images/5120x2880.png.license

@@ -0,0 +1,2 @@
+SPDX-FileCopyrightText: 2026 Luiza Balaur
+SPDX-License-Identifier: EUPL-1.2

wallpapers/SHIFT/contents/images_dark/5120x2880.png.license

@@ -0,0 +1,2 @@
+SPDX-FileCopyrightText: 2026 Luiza Balaur
+SPDX-License-Identifier: EUPL-1.2

wallpapers/SHIFT/metadata.json

@@ -0,0 +1,12 @@
+{
+    "KPlugin": {
+        "Authors": [
+            {
+                "Name": "Luiza Balaur"
+            }
+        ],
+        "Id": "SHIFT",
+        "License": "EUPL-1.2",
+        "Name": "SHIFT Light / SHIFT Dark"
+    }
+}

wallpapers/SHIFT/metadata.json.license

@@ -0,0 +1,2 @@
+SPDX-FileCopyrightText: 2026 Luiza Balaur
+SPDX-License-Identifier: EUPL-1.2