remove welcome page (reduce ~300k size)

HMCL/src/main/java/org/jackhuang/hmcl/ui/decorator/DecoratorController.java

@@ -1,6 +1,6 @@
 /*
  * Hello Minecraft! Launcher
- * Copyright (C) 2020  huangyuhui <huanghongxun2008@126.com> and contributors
+ * Copyright (C) 2021  huangyuhui <huanghongxun2008@126.com> and contributors
  *
  * This program is free software: you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
@@ -18,26 +18,18 @@
 package org.jackhuang.hmcl.ui.decorator;
 
 import com.jfoenix.controls.JFXDialog;
-import javafx.animation.Interpolator;
-import javafx.animation.KeyFrame;
-import javafx.animation.KeyValue;
-import javafx.animation.Timeline;
 import javafx.application.Platform;
 import javafx.beans.binding.Bindings;
 import javafx.beans.value.ChangeListener;
 import javafx.beans.value.ObservableValue;
 import javafx.event.EventHandler;
-import javafx.scene.Cursor;
 import javafx.scene.Node;
 import javafx.scene.image.Image;
-import javafx.scene.image.ImageView;
 import javafx.scene.input.DragEvent;
 import javafx.scene.layout.*;
 import javafx.stage.Stage;
-import javafx.util.Duration;
 import org.jackhuang.hmcl.Launcher;
 import org.jackhuang.hmcl.auth.authlibinjector.AuthlibInjectorDnD;
-import org.jackhuang.hmcl.setting.Config;
 import org.jackhuang.hmcl.setting.EnumBackgroundImage;
 import org.jackhuang.hmcl.ui.Controllers;
 import org.jackhuang.hmcl.ui.FXUtils;
@@ -55,7 +47,6 @@ import java.nio.file.Files;
 import java.nio.file.Path;
 import java.nio.file.Paths;
 import java.util.List;
-import java.util.Locale;
 import java.util.Optional;
 import java.util.Random;
 import java.util.logging.Level;
@@ -90,26 +81,6 @@ public class DecoratorController {
         decorator.onBackNavButtonActionProperty().set(e -> back());
         decorator.onRefreshNavButtonActionProperty().set(e -> refresh());
 
-        if (switchedToNewUI()) {
-            if (config().getLocalization().getLocale() == Locale.CHINA) {
-                // currently, user guide is only available in Chinese
-                ImageView welcomeView = new ImageView();
-                welcomeView.setImage(newImage("/assets/img/welcome.png"));
-                welcomeView.setCursor(Cursor.HAND);
-                FXUtils.limitSize(welcomeView, 796, 517);
-                welcomeView.setOnMouseClicked(e -> {
-                    Timeline nowAnimation = new Timeline();
-                    nowAnimation.getKeyFrames().addAll(
-                            new KeyFrame(Duration.ZERO, new KeyValue(welcomeView.opacityProperty(), 1.0D, Interpolator.EASE_BOTH)),
-                            new KeyFrame(new Duration(300), new KeyValue(welcomeView.opacityProperty(), 0.0D, Interpolator.EASE_BOTH)),
-                            new KeyFrame(new Duration(300), e2 -> decorator.getContainer().remove(welcomeView))
-                    );
-                    nowAnimation.play();
-                });
-                decorator.getContainer().setAll(welcomeView);
-            }
-        }
-
         setupBackground();
 
         setupAuthlibInjectorDnD();
@@ -119,17 +90,6 @@ public class DecoratorController {
         return decorator;
     }
 
-    /**
-     * @return true if the user is seeing the current version of UI for the first time.
-     */
-    private boolean switchedToNewUI() {
-        if (config().getUiVersion() < Config.CURRENT_UI_VERSION) {
-            config().setUiVersion(Config.CURRENT_UI_VERSION);
-            return true;
-        }
-        return false;
-    }
-
     // ==== Background ====
 
     private void setupBackground() {