[orx-gui] Convert gradle build to Kotlin

orx-jvm/orx-gui/build.gradle

@@ -1,22 +0,0 @@
-sourceSets {
-    demo {
-        java {
-            srcDirs = ["src/demo/kotlin"]
-            compileClasspath += main.getCompileClasspath()
-            runtimeClasspath += main.getRuntimeClasspath()
-        }
-    }
-}
-
-dependencies {
-    api project(":orx-parameters")
-    api project(":orx-jvm:orx-panel")
-    implementation "org.openrndr:openrndr-dialogs:$openrndrVersion"
-    implementation "com.google.code.gson:gson:$gsonVersion"
-    implementation "org.jetbrains.kotlin:kotlin-reflect:$kotlinVersion"
-    demoImplementation("org.openrndr:openrndr-application:$openrndrVersion")
-    demoImplementation("org.openrndr:openrndr-extensions:$openrndrVersion")
-    demoRuntimeOnly("org.openrndr:openrndr-gl3:$openrndrVersion")
-    demoRuntimeOnly("org.openrndr:openrndr-gl3-natives-$openrndrOS:$openrndrVersion")
-    demoImplementation(sourceSets.getByName("main").output)
-}

orx-jvm/orx-gui/build.gradle.kts

@@ -0,0 +1,37 @@
+import ScreenshotsHelper.collectScreenshots
+
+sourceSets {
+    val main by getting { }
+    val demo by creating {
+        java {
+            srcDir("src/demo/kotlin")
+            compileClasspath += main.getCompileClasspath()
+            runtimeClasspath += main.getRuntimeClasspath()
+        }
+    }
+    collectScreenshots(project, demo) { }
+}
+
+val openrndrVersion: String by rootProject.extra
+val openrndrOS: String by rootProject.extra
+val slf4jVersion: String by rootProject.extra
+val gsonVersion: String by rootProject.extra
+val kotlinVersion: String by rootProject.extra
+val demoImplementation by configurations.getting {}
+val demoRuntimeOnly by configurations.getting {}
+
+dependencies {
+    api(project(":orx-parameters"))
+    api(project(":orx-jvm:orx-panel"))
+    implementation("org.openrndr:openrndr-filter:$openrndrVersion")
+    implementation("org.openrndr:openrndr-dialogs:$openrndrVersion")
+    implementation("com.google.code.gson:gson:$gsonVersion")
+    implementation("org.jetbrains.kotlin:kotlin-reflect:$kotlinVersion")
+    demoImplementation("org.openrndr:openrndr-application:$openrndrVersion")
+    demoImplementation("org.openrndr:openrndr-extensions:$openrndrVersion")
+
+    demoRuntimeOnly("org.slf4j:slf4j-simple:$slf4jVersion")
+    demoRuntimeOnly("org.openrndr:openrndr-gl3:$openrndrVersion")
+    demoRuntimeOnly("org.openrndr:openrndr-gl3-natives-$openrndrOS:$openrndrVersion")
+    demoImplementation(sourceSets.getByName("main").output)
+}