CEF: Remove jogl and jogamp deps by implementing a no-op renderer (#2095)

* CEF: Remove jogl and jogamp deps by implementing a no-op renderer

* Update readme

AndroidCompat/src/main/java/xyz/nulldev/androidcompat/webkit/KcefWebViewProvider.kt

@@ -68,6 +68,7 @@ import org.cef.handler.CefLoadHandler
 import org.cef.handler.CefLoadHandlerAdapter
 import org.cef.handler.CefMessageRouterHandlerAdapter
 import org.cef.handler.CefPermissionHandler
+import org.cef.handler.CefRenderHandlerAdapter
 import org.cef.handler.CefRequestHandler
 import org.cef.handler.CefRequestHandlerAdapter
 import org.cef.handler.CefResourceHandler
@@ -82,10 +83,13 @@ import org.cef.network.CefPostDataElement
 import org.cef.network.CefRequest
 import org.cef.network.CefResponse
 import org.koin.mp.KoinPlatformTools
+import java.awt.Rectangle
 import java.io.BufferedWriter
 import java.io.File
 import java.io.IOException
+import java.nio.ByteBuffer
 import java.util.concurrent.Executor
+import javax.swing.JPanel
 import kotlin.math.min
 import kotlin.reflect.KFunction
 import kotlin.reflect.full.declaredMemberFunctions
@@ -97,6 +101,7 @@ class KcefWebViewProvider(
     private val settings = KcefWebSettings()
     private var viewClient = WebViewClient()
     private var chromeClient = WebChromeClient()
+    private val renderHandler = RenderHandler()
     private val mappings: MutableList<FunctionMapping> = mutableListOf()
     private val urlHttpMapping: MutableMap<String, String> = mutableMapOf()
     private var initialRequestData: InitialRequestData? = null
@@ -522,6 +527,21 @@ class KcefWebViewProvider(
         }
     }
 
+    private class RenderHandler : CefRenderHandlerAdapter() {
+        override fun getViewRect(browser: CefBrowser): Rectangle = Rectangle(0, 0, 1280, 2856)
+
+        override fun onPaint(
+            browser: CefBrowser,
+            popup: Boolean,
+            dirtyRects: Array<Rectangle>,
+            buffer: ByteBuffer,
+            width: Int,
+            height: Int,
+        ) {
+            // do nothing
+        }
+    }
+
     override fun init(
         javaScriptInterfaces: Map<String, Any>?,
         privateBrowsing: Boolean,
@@ -617,7 +637,7 @@ class KcefWebViewProvider(
             kcefClient!!
                 .createBrowser(
                     loadUrl,
-                    CefRendering.OFFSCREEN,
+                    CefRendering.CefRenderingWithHandler(renderHandler, JPanel()),
                     false,
                 ).apply {
                     // NOTE: Without this, we don't seem to be receiving any events
@@ -642,7 +662,7 @@ class KcefWebViewProvider(
             kcefClient!!
                 .createBrowser(
                     url,
-                    CefRendering.OFFSCREEN,
+                    CefRendering.CefRenderingWithHandler(renderHandler, JPanel()),
                     false,
                 ).apply {
                     // NOTE: Without this, we don't seem to be receiving any events
@@ -676,7 +696,7 @@ class KcefWebViewProvider(
             kcefClient!!
                 .createBrowser(
                     url,
-                    CefRendering.OFFSCREEN,
+                    CefRendering.CefRenderingWithHandler(renderHandler, JPanel()),
                     false,
                 ).apply {
                     // NOTE: Without this, we don't seem to be receiving any events

README.md

@@ -110,18 +110,13 @@ Download the latest `linux-x64`(x86_64) release from [the releases section](http
 WebView support is implemented via [JCEF](https://github.com/JetBrains/jcef).
 This is optional, and is only necessary to support some extensions.
 
-To have a functional WebView, several dependencies are required; aside from X11 libraries necessary for rendering Chromium, some JNI bindings are necessary: gluegen and jogl (found in Ubuntu as `libgluegen2-jni` and `libjogl2-jni`).
+To have a functional WebView, some X11 dependencies are required for rendering Chromium.
-Note that on some systems (e.g. Ubuntu), the JNI libraries are not automatically found, see below.
+These include `libxrender`, `libxcomposite` `libxdamage`, `libxkbcommon` and `libxtst`.
 
 A CEF server is launched on startup, which loads the X11 libraries.
 If those are missing, you should see "Could not load 'jcef' library".
 If so, use `ldd ~/.local/share/Tachidesk/bin/kcef/libjcef.so | grep not` to figure out which libraries are not found on your system.
 
-The JNI bindings are only loaded when a browser is actually launched.
-This is done by extensions that rely on WebView, not by Suwayomi itself.
-If there is a problem loading the JNI libraries, you should see a message indicating the library and the search path.
-This search path includes the current working directory, if you do not want to modify system directories.
-
 Refer to the [Dockerfile](https://github.com/Suwayomi/Suwayomi-Server-docker/blob/main/Dockerfile) for more details.
 
 Note that it is required to have an X session active and available to Suwayomi (i.e. `DISPLAY` is set).

gradle/libs.versions.toml

@@ -158,8 +158,6 @@ cronUtils = "com.cronutils:cron-utils:9.2.1"
 
 # Webview
 jcef = { module = "org.jetbrains.intellij.deps.jcef:jcef", version.ref = "jcef" }
-gluegen = "org.jogamp.gluegen:gluegen-rt:2.5.0"
-jogl = "org.jogamp.jogl:jogl-all:2.5.0"
 
 # User
 jwt = "com.auth0:java-jwt:4.5.2"

server/build.gradle.kts

@@ -37,10 +37,6 @@ dependencies {
     implementation(libs.bundles.shared)
     testImplementation(libs.bundles.sharedTest)
 
-    // WebView
-    implementation(libs.gluegen)
-    implementation(libs.jogl)
-
     // OkHttp
     implementation(libs.bundles.okhttp)
     implementation(libs.okio)