New theme file format and exporter

(But no import yet) Close #1443
2025-06-04 23:56:00 +02:00
parent 28232a33b4
commit 5ac4022eb5
9 changed files with 377 additions and 27 deletions
@@ -0,0 +1,69 @@
+package de.mm20.launcher2.themes
+
+import de.mm20.launcher2.crashreporter.CrashReporter
+import de.mm20.launcher2.serialization.Json
+import kotlinx.coroutines.Dispatchers
+import kotlinx.coroutines.withContext
+import kotlinx.serialization.Serializable
+import kotlinx.serialization.SerializationException
+import kotlinx.serialization.json.JsonElement
+import kotlinx.serialization.json.JsonPrimitive
+import kotlinx.serialization.json.decodeFromJsonElement
+import kotlinx.serialization.json.intOrNull
+import kotlinx.serialization.json.jsonObject
+
+@Serializable
+data class ThemeBundle(
+    val name: String,
+    val author: String? = null,
+    val colors: Colors? = null,
+    val shapes: Shapes? = null,
+    /**
+     * The file version, always 2 for the new theme format.
+     */
+    val version: Int = 2,
+) {
+    fun toJson(): String {
+        return Json.Lenient.encodeToString(this)
+    }
+
+    companion object {
+        fun fromJson(jsonString: String): ThemeBundle? {
+            try {
+                val jsonElement = Json.Lenient.parseToJsonElement(jsonString).jsonObject
+
+                val version = (jsonElement.get("version") as? JsonPrimitive)?.intOrNull
+
+                if (version != 2) {
+                    return fromLegacyJson(jsonElement)
+                }
+
+                return Json.Lenient.decodeFromJsonElement(jsonElement)
+
+            } catch (e: SerializationException) {
+                CrashReporter.logException(e)
+                return null
+            } catch (e: IllegalArgumentException) {
+                CrashReporter.logException(e)
+                return null
+            }
+        }
+
+        private fun fromLegacyJson(jsonElement: JsonElement): ThemeBundle? {
+            try {
+                val colorScheme: Colors = LegacyThemeJson.decodeFromJsonElement(jsonElement)
+                return ThemeBundle(
+                    name = colorScheme.name,
+                    author = "",
+                    colors = colorScheme,
+                    shapes = null,
+                    version = 2,
+                )
+            } catch (e: SerializationException) {
+                CrashReporter.logException(e)
+                return null
+            }
+
+        }
+    }
+}