feat: download concurrency settings. Closes #990.

HMCL/src/main/java/org/jackhuang/hmcl/setting/Config.java

@@ -122,6 +122,12 @@ public final class Config implements Cloneable, Observable {
     @SerializedName("localization")
     private ObjectProperty<SupportedLocale> localization = new SimpleObjectProperty<>(Locales.DEFAULT);
 
+    @SerializedName("autoDownloadThreads")
+    private BooleanProperty autoDownloadThreads = new SimpleBooleanProperty(false);
+
+    @SerializedName("downloadThreads")
+    private IntegerProperty downloadThreads = new SimpleIntegerProperty(64);
+
     @SerializedName("downloadType")
     private StringProperty downloadType = new SimpleStringProperty("mcbbs");
 
@@ -389,6 +395,30 @@ public final class Config implements Cloneable, Observable {
         return localization;
     }
 
+    public boolean getAutoDownloadThreads() {
+        return autoDownloadThreads.get();
+    }
+
+    public BooleanProperty autoDownloadThreadsProperty() {
+        return autoDownloadThreads;
+    }
+
+    public void setAutoDownloadThreads(boolean autoDownloadThreads) {
+        this.autoDownloadThreads.set(autoDownloadThreads);
+    }
+
+    public int getDownloadThreads() {
+        return downloadThreads.get();
+    }
+
+    public IntegerProperty downloadThreadsProperty() {
+        return downloadThreads;
+    }
+
+    public void setDownloadThreads(int downloadThreads) {
+        this.downloadThreads.set(downloadThreads);
+    }
+
     public String getDownloadType() {
         return downloadType.get();
     }

HMCL/src/main/java/org/jackhuang/hmcl/setting/DownloadProviders.java

@@ -17,14 +17,19 @@
  */
 package org.jackhuang.hmcl.setting;
 
+import javafx.beans.InvalidationListener;
 import org.jackhuang.hmcl.download.*;
+import org.jackhuang.hmcl.task.FetchTask;
 import org.jackhuang.hmcl.ui.FXUtils;
 
-import java.util.*;
+import java.util.Arrays;
+import java.util.Map;
+import java.util.Optional;
 import java.util.stream.Collectors;
 import java.util.stream.Stream;
 
 import static org.jackhuang.hmcl.setting.ConfigHolder.config;
+import static org.jackhuang.hmcl.task.FetchTask.DEFAULT_CONCURRENCY;
 import static org.jackhuang.hmcl.util.Lang.mapOf;
 import static org.jackhuang.hmcl.util.Pair.pair;
 
@@ -44,6 +49,8 @@ public final class DownloadProviders {
     public static final String DEFAULT_PROVIDER_ID = "balanced";
     public static final String DEFAULT_RAW_PROVIDER_ID = "mcbbs";
 
+    private static final InvalidationListener observer;
+
     static {
         String bmclapiRoot = "https://bmclapi2.bangbang93.com";
         String bmclapiRootOverride = System.getProperty("hmcl.bmclapi.override");
@@ -66,6 +73,11 @@ public final class DownloadProviders {
                 pair("official", new AutoDownloadProvider(MOJANG, fileProvider)),
                 pair("balanced", new AutoDownloadProvider(balanced, fileProvider)),
                 pair("mirror", new AutoDownloadProvider(MCBBS, fileProvider)));
+
+        observer = FXUtils.observeWeak(() -> {
+            FetchTask.setDownloadExecutorConcurrency(
+                    config().getAutoDownloadThreads() ? DEFAULT_CONCURRENCY : config().getDownloadThreads());
+        }, config().autoDownloadThreadsProperty(), config().downloadThreadsProperty());
     }
 
     static void init() {

HMCL/src/main/java/org/jackhuang/hmcl/ui/SVG.java

@@ -415,6 +415,12 @@ public final class SVG {
                 fill, width, height);
     }
 
+    public static Node bell(ObjectBinding<? extends Paint> fill, double width, double height) {
+        return createSVGPath(
+                "M21,19V20H3V19L5,17V11C5,7.9 7.03,5.17 10,4.29C10,4.19 10,4.1 10,4A2,2 0 0,1 12,2A2,2 0 0,1 14,4C14,4.1 14,4.19 14,4.29C16.97,5.17 19,7.9 19,11V17L21,19M14,21A2,2 0 0,1 12,23A2,2 0 0,1 10,21",
+                fill, width, height);
+    }
+
     public static Node contentSaveMoveOutline(ObjectBinding<? extends Paint> fill, double width, double height) {
         return createSVGPath(
                 "M13 17H17V14L22 18.5L17 23V20H13V17M14 12.8C13.5 12.31 12.78 12 12 12C10.34 12 9 13.34 9 15C9 16.31 9.84 17.41 11 17.82C11.07 15.67 12.27 13.8 14 12.8M11.09 19H5V5H16.17L19 7.83V12.35C19.75 12.61 20.42 13 21 13.54V7L17 3H5C3.89 3 3 3.9 3 5V19C3 20.1 3.89 21 5 21H11.81C11.46 20.39 11.21 19.72 11.09 19M6 10H15V6H6V10Z",

HMCL/src/main/java/org/jackhuang/hmcl/ui/construct/HintPane.java

@@ -0,0 +1,69 @@
+/*
+ * Hello Minecraft! Launcher
+ * 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
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+package org.jackhuang.hmcl.ui.construct;
+
+import javafx.beans.property.SimpleStringProperty;
+import javafx.beans.property.StringProperty;
+import javafx.geometry.Insets;
+import javafx.geometry.Pos;
+import javafx.scene.control.Label;
+import javafx.scene.layout.HBox;
+import javafx.scene.layout.VBox;
+import javafx.scene.paint.Color;
+import javafx.scene.text.Text;
+import javafx.scene.text.TextFlow;
+import org.jackhuang.hmcl.setting.Theme;
+import org.jackhuang.hmcl.ui.SVG;
+import org.jackhuang.hmcl.util.javafx.BindingMapping;
+
+import static org.jackhuang.hmcl.util.i18n.I18n.i18n;
+
+public class HintPane extends VBox {
+    private final Text label = new Text();
+    private final StringProperty text = new SimpleStringProperty(this, "text");
+
+    public HintPane(MessageDialogPane.MessageType type) {
+        setFillWidth(true);
+        getStyleClass().add("hint");
+        HBox hbox = new HBox();
+        hbox.setAlignment(Pos.CENTER_LEFT);
+        hbox.getChildren().setAll(
+                SVG.informationOutline(Theme.blackFillBinding(), 16, 16),
+                new Label(i18n("message.info"))
+        );
+        TextFlow flow = new TextFlow();
+        flow.getChildren().setAll(label);
+        getChildren().setAll(hbox, flow);
+        label.textProperty().bind(text);
+        VBox.setMargin(flow, new Insets(2, 2, 0, 2));
+
+        label.fillProperty().bind(BindingMapping.of(disabledProperty()).map(disabled -> disabled ? new Color(0, 0, 0, 0.5) : Color.BLACK));
+    }
+
+    public String getText() {
+        return text.get();
+    }
+
+    public StringProperty textProperty() {
+        return text;
+    }
+
+    public void setText(String text) {
+        this.text.set(text);
+    }
+}

HMCL/src/main/java/org/jackhuang/hmcl/ui/main/DownloadSettingsPage.java

@@ -22,17 +22,18 @@ import javafx.geometry.HPos;
 import javafx.geometry.Insets;
 import javafx.geometry.Pos;
 import javafx.scene.control.Label;
+
 import javafx.scene.control.ScrollPane;
 import javafx.scene.control.ToggleGroup;
 import javafx.scene.layout.*;
 import org.jackhuang.hmcl.setting.DownloadProviders;
+import org.jackhuang.hmcl.task.FetchTask;
 import org.jackhuang.hmcl.ui.FXUtils;
-import org.jackhuang.hmcl.ui.construct.ComponentList;
-import org.jackhuang.hmcl.ui.construct.NumberValidator;
-import org.jackhuang.hmcl.ui.construct.Validator;
+import org.jackhuang.hmcl.ui.construct.*;
 import org.jackhuang.hmcl.util.javafx.SafeStringConverter;
 
 import java.net.Proxy;
+import java.util.concurrent.atomic.AtomicBoolean;
 
 import static org.jackhuang.hmcl.setting.ConfigHolder.config;
 import static org.jackhuang.hmcl.ui.FXUtils.stringConverter;
@@ -103,6 +104,68 @@ public class DownloadSettingsPage extends StackPane {
             content.getChildren().addAll(ComponentList.createComponentListTitle(i18n("settings.launcher.version_list_source")), downloadSource);
         }
 
+        {
+            ComponentList downloadThreads = new ComponentList();
+
+            {
+                VBox pane = new VBox(16);
+                pane.setPadding(new Insets(8, 0, 8, 0));
+
+                {
+                    JFXCheckBox chkAutoDownloadThreads = new JFXCheckBox(i18n("settings.launcher.download.threads.auto"));
+                    chkAutoDownloadThreads.selectedProperty().bindBidirectional(config().autoDownloadThreadsProperty());
+                    pane.getChildren().add(chkAutoDownloadThreads);
+
+                    chkAutoDownloadThreads.selectedProperty().addListener((a, b, newValue) -> {
+                        if (newValue) {
+                            config().downloadThreadsProperty().set(FetchTask.DEFAULT_CONCURRENCY);
+                        }
+                    });
+                }
+
+                {
+                    HBox hbox = new HBox(8);
+                    hbox.setAlignment(Pos.CENTER);
+                    hbox.setPadding(new Insets(0, 0, 0, 30));
+                    hbox.disableProperty().bind(config().autoDownloadThreadsProperty());
+                    Label label = new Label(i18n("settings.launcher.download.threads"));
+
+                    JFXSlider slider = new JFXSlider(1, 256, 64);
+                    HBox.setHgrow(slider, Priority.ALWAYS);
+
+                    JFXTextField threadsField = new JFXTextField();
+                    FXUtils.setLimitWidth(threadsField, 60);
+                    threadsField.textProperty().bindBidirectional(config().downloadThreadsProperty(), SafeStringConverter.fromInteger());
+
+                    AtomicBoolean changedByTextField = new AtomicBoolean(false);
+                    FXUtils.onChangeAndOperate(config().downloadThreadsProperty(), value -> {
+                        changedByTextField.set(true);
+                        slider.setValue(value.intValue());
+                        changedByTextField.set(false);
+                    });
+                    slider.valueProperty().addListener((value, oldVal, newVal) -> {
+                        if (changedByTextField.get()) return;
+                        config().downloadThreadsProperty().set(value.getValue().intValue());
+                    });
+
+                    hbox.getChildren().setAll(label, slider, threadsField);
+                    pane.getChildren().add(hbox);
+                }
+
+                {
+                    HintPane hintPane = new HintPane(MessageDialogPane.MessageType.INFORMATION);
+                    VBox.setMargin(hintPane, new Insets(0, 0, 0, 30));
+                    hintPane.disableProperty().bind(config().autoDownloadThreadsProperty());
+                    hintPane.setText(i18n("settings.launcher.download.threads.hint"));
+                    pane.getChildren().add(hintPane);
+                }
+
+                downloadThreads.getContent().add(pane);
+            }
+
+            content.getChildren().addAll(ComponentList.createComponentListTitle(i18n("download")), downloadThreads);
+        }
+
         {
             ComponentList proxyList = new ComponentList();
 

HMCL/src/main/java/org/jackhuang/hmcl/ui/main/LauncherSettingsPage.java

@@ -67,14 +67,14 @@ public class LauncherSettingsPage extends BorderPane implements DecoratorPage {
         {
             AdvancedListBox sideBar = new AdvancedListBox()
                     .addNavigationDrawerItem(settingsItem -> {
-                        settingsItem.setTitle(i18n("settings.type.global.manage"));
+                        settingsItem.setTitle(i18n("settings.game.current"));
                         settingsItem.setLeftGraphic(wrap(SVG.gamepad(null, 20, 20)));
                         settingsItem.activeProperty().bind(tab.getSelectionModel().selectedItemProperty().isEqualTo(gameTab));
                         settingsItem.setOnAction(e -> tab.getSelectionModel().select(gameTab));
                     })
-                    .startCategory(i18n("settings.launcher"))
+                    .startCategory(i18n("launcher"))
                     .addNavigationDrawerItem(settingsItem -> {
-                        settingsItem.setTitle(i18n("settings.launcher"));
+                        settingsItem.setTitle(i18n("settings.launcher.general"));
                         settingsItem.setLeftGraphic(wrap(SVG.applicationOutline(null, 20, 20)));
                         settingsItem.activeProperty().bind(tab.getSelectionModel().selectedItemProperty().isEqualTo(settingsTab));
                         settingsItem.setOnAction(e -> tab.getSelectionModel().select(settingsTab));
@@ -91,6 +91,7 @@ public class LauncherSettingsPage extends BorderPane implements DecoratorPage {
                         downloadItem.activeProperty().bind(tab.getSelectionModel().selectedItemProperty().isEqualTo(downloadTab));
                         downloadItem.setOnAction(e -> tab.getSelectionModel().select(downloadTab));
                     })
+                    .startCategory(i18n("help"))
                     .addNavigationDrawerItem(helpItem -> {
                         helpItem.setTitle(i18n("help"));
                         helpItem.setLeftGraphic(wrap(SVG.helpCircleOutline(null, 20, 20)));

HMCL/src/main/resources/assets/css/root.css

@@ -42,6 +42,15 @@
     -fx-text-fill: rgba(0, 0, 0, 0.5);
 }
 
+.hint {
+    -fx-border-color: #b8daff;
+    -fx-background-color: #cce5ff;
+    -fx-background-radius: 5;
+    -fx-border-width: 1;
+    -fx-border-radius: 5;
+    -fx-padding: 6;
+}
+
 .memory-label {
 }
 

HMCL/src/main/resources/assets/lang/I18N.properties

@@ -530,6 +530,7 @@ settings.advanced.wrapper_launcher=Wrapper Launcher (i.e. optirun...)
 settings.custom=Custom
 
 settings.game=Games
+settings.game.current=Game
 settings.game.dimension=Game Window Dimension
 settings.game.exploration=Explore
 settings.game.fullscreen=Fullscreen
@@ -546,10 +547,14 @@ settings.launcher=Settings
 settings.launcher.appearance=Appearance
 settings.launcher.common_path.tooltip=This app will cache all downloads here.
 settings.launcher.debug=Debug
+settings.launcher.download.threads=Threads
+settings.launcher.download.threads.auto=Auto Determined
+settings.launcher.download.threads.hint=Too large concurrency may cause system to freeze. Download speed may be affected by ICP and destination server.
 settings.launcher.download_source=Download Source
 settings.launcher.download_source.auto=Auto choose download source
 settings.launcher.enable_game_list=Show version list in main page
 settings.launcher.font=Font
+settings.launcher.general=General
 settings.launcher.language=Language
 settings.launcher.launcher_log.export=Export launcher logs
 settings.launcher.launcher_log.export.failed=Failed to export logs

HMCL/src/main/resources/assets/lang/I18N_zh.properties

@@ -380,6 +380,7 @@ settings.advanced.wrapper_launcher=前置指令（不必填寫，如 optirun）
 settings.custom=自訂
 
 settings.game=遊戲設定
+settings.game.current=遊戲
 settings.game.dimension=遊戲介面解析度大小
 settings.game.exploration=瀏覽
 settings.game.fullscreen=全螢幕

HMCL/src/main/resources/assets/lang/I18N_zh_CN.properties

@@ -538,6 +538,7 @@ settings.advanced.wrapper_launcher=前置指令（不必填写，如 optirun）
 settings.custom=自定义
 
 settings.game=游戏设置
+settings.game.current=游戏
 settings.game.dimension=游戏窗口分辨率
 settings.game.exploration=浏览
 settings.game.fullscreen=全屏
@@ -554,10 +555,15 @@ settings.launcher=启动器设置
 settings.launcher.appearance=外观
 settings.launcher.common_path.tooltip=启动器将所有游戏资源及依赖库文件放于此集中管理，如果游戏文件夹内有现成的将不会使用公共库文件
 settings.launcher.debug=调试
+settings.launcher.download=下载
+settings.launcher.download.threads=并发数
+settings.launcher.download.threads.auto=自动选择并发数
+settings.launcher.download.threads.hint=并发数过大可能导致系统卡顿。你的下载速度会受到宽带运营商、服务器等方面的影响，调大下载并发数不一定能大幅提升总下载速度。
 settings.launcher.download_source=下载源
 settings.launcher.download_source.auto=自动选择下载源
 settings.launcher.enable_game_list=在主页内显示版本列表
 settings.launcher.font=字体
+settings.launcher.general=通用
 settings.launcher.language=语言
 settings.launcher.launcher_log.export=导出启动器日志
 settings.launcher.launcher_log.export.failed=无法导出日志

HMCLCore/src/main/java/org/jackhuang/hmcl/task/FetchTask.java

@@ -268,8 +268,9 @@ public abstract class FetchTask<T> extends Task<T> {
 
     }
 
-    private static int downloadExecutorConcurrency = Math.min(Runtime.getRuntime().availableProcessors() * 4, 64);
-    private static volatile ExecutorService DOWNLOAD_EXECUTOR;
+    public static int DEFAULT_CONCURRENCY = Math.min(Runtime.getRuntime().availableProcessors() * 4, 64);
+    private static int downloadExecutorConcurrency = DEFAULT_CONCURRENCY;
+    private static volatile ThreadPoolExecutor DOWNLOAD_EXECUTOR;
 
     /**
      * Get singleton instance of the thread pool for file downloading.
@@ -292,8 +293,8 @@ public abstract class FetchTask<T> extends Task<T> {
         synchronized (Schedulers.class) {
             downloadExecutorConcurrency = concurrency;
             if (DOWNLOAD_EXECUTOR != null) {
-                DOWNLOAD_EXECUTOR.shutdownNow();
-                DOWNLOAD_EXECUTOR = null;
+                DOWNLOAD_EXECUTOR.setCorePoolSize(concurrency);
+                DOWNLOAD_EXECUTOR.setMaximumPoolSize(concurrency);
             }
         }
     }