Allow copying chat lines when translating using /ctranslate

src/main/java/net/earthcomputer/clientcommands/command/TranslateCommand.java

@@ -25,6 +25,8 @@
 
 public class TranslateCommand {
 
+    public static final String LITERAL = "ctranslate";
+
     private static final SimpleCommandExceptionType UNKNOWN_ERROR_EXCEPTION = new SimpleCommandExceptionType(Component.translatable("commands.ctranslate.unknownError"));
 
     private static final String URL_FORMAT = "https://translate.googleapis.com/translate_a/single?client=gtx&dt=t&sl=%s&tl=%s&q=%s";
@@ -34,7 +36,7 @@ public class TranslateCommand {
     private static final Duration DURATION = Duration.ofSeconds(5);
 
     public static void register(CommandDispatcher<FabricClientCommandSource> dispatcher) {
-        dispatcher.register(literal("ctranslate")
+        dispatcher.register(literal(LITERAL)
                 .then(argument("query", translationQuery())
                         .executes(ctx -> translate(ctx.getSource(), getTranslationQuery(ctx, "query")))));
     }

src/main/java/net/earthcomputer/clientcommands/interfaces/IChatScreen.java

@@ -0,0 +1,5 @@
+package net.earthcomputer.clientcommands.interfaces;
+
+public interface IChatScreen {
+    boolean clientcommands_isTranslating();
+}

src/main/java/net/earthcomputer/clientcommands/mixin/commands/translate/ChatComponent$1Mixin.java

@@ -0,0 +1,55 @@
+package net.earthcomputer.clientcommands.mixin.commands.translate;
+
+import com.llamalad7.mixinextras.injector.wrapoperation.Operation;
+import com.llamalad7.mixinextras.injector.wrapoperation.WrapOperation;
+import net.earthcomputer.clientcommands.interfaces.IChatScreen;
+import net.minecraft.client.Minecraft;
+import net.minecraft.client.gui.ActiveTextCollector;
+import net.minecraft.client.gui.Font;
+import net.minecraft.client.gui.TextAlignment;
+import net.minecraft.client.gui.components.ChatComponent;
+import net.minecraft.client.gui.screens.ChatScreen;
+import net.minecraft.client.multiplayer.chat.GuiMessage;
+import net.minecraft.client.renderer.state.gui.GuiTextRenderState;
+import net.minecraft.util.ARGB;
+import net.minecraft.util.FormattedCharSequence;
+import org.spongepowered.asm.mixin.Mixin;
+import org.spongepowered.asm.mixin.injection.At;
+
+@Mixin(targets = "net/minecraft/client/gui/components/ChatComponent$1")
+public abstract class ChatComponent$1Mixin {
+    @WrapOperation(method = "accept", at = @At(value = "INVOKE", target = "Lnet/minecraft/client/gui/components/ChatComponent$ChatGraphicsAccess;handleMessage(IFLnet/minecraft/util/FormattedCharSequence;)Z"))
+    private boolean copyText(ChatComponent.ChatGraphicsAccess instance, int textTop, float opacity, FormattedCharSequence text, Operation<Boolean> original, GuiMessage.Line line) {
+        if (shouldCallOriginal(instance, textTop, text, line)) {
+            return original.call(instance, textTop, opacity, text);
+        }
+        // original.call() always returns false
+        return false;
+    }
+
+    private static boolean shouldCallOriginal(ChatComponent.ChatGraphicsAccess instance, int textTop, FormattedCharSequence text, GuiMessage.Line line) {
+        if (!(instance instanceof ChatComponent.ClickableTextOnlyGraphicsAccess clickableTextOnlyGraphicsAccess)) {
+            return true;
+        }
+        Minecraft minecraft = Minecraft.getInstance();
+        if (!(minecraft.gui.screen() instanceof ChatScreen chatScreen)) {
+            return true;
+        }
+        if (!((IChatScreen) chatScreen).clientcommands_isTranslating()) {
+            return true;
+        }
+        if (!(clickableTextOnlyGraphicsAccess.output instanceof ActiveTextCollector.ClickableStyleFinder clickableStyleFinder)) {
+            return true;
+        }
+        Font font = minecraft.font;
+        ActiveTextCollector.Parameters parameters = clickableStyleFinder.defaultParameters();
+        int leftX = TextAlignment.LEFT.calculateLeft(0, font, text);
+        GuiTextRenderState renderState = new GuiTextRenderState(font, text, parameters.pose(), leftX, textTop, ARGB.white(parameters.opacity()), 0, true, true, parameters.scissor());
+        boolean[] found = {false};
+        ActiveTextCollector.findElementUnderCursor(renderState, clickableStyleFinder.testX, clickableStyleFinder.testY, _ -> {
+            minecraft.keyboardHandler.setClipboard(line.parent().content().getString());
+            found[0] = true;
+        });
+        return !found[0];
+    }
+}

src/main/java/net/earthcomputer/clientcommands/mixin/commands/translate/ChatScreenMixin.java

@@ -0,0 +1,34 @@
+package net.earthcomputer.clientcommands.mixin.commands.translate;
+
+import net.earthcomputer.clientcommands.command.TranslateCommand;
+import net.earthcomputer.clientcommands.interfaces.IChatScreen;
+import net.minecraft.client.gui.screens.ChatScreen;
+import net.minecraft.client.gui.screens.Screen;
+import net.minecraft.commands.Commands;
+import net.minecraft.network.chat.Component;
+import org.spongepowered.asm.mixin.Mixin;
+import org.spongepowered.asm.mixin.Unique;
+import org.spongepowered.asm.mixin.injection.At;
+import org.spongepowered.asm.mixin.injection.Inject;
+import org.spongepowered.asm.mixin.injection.callback.CallbackInfo;
+
+@Mixin(ChatScreen.class)
+public abstract class ChatScreenMixin extends Screen implements IChatScreen {
+
+    @Unique
+    private boolean isTranslating = false;
+
+    protected ChatScreenMixin(Component title) {
+        super(title);
+    }
+
+    @Inject(method = "onEdited", at = @At("TAIL"))
+    private void onEdited(String value, CallbackInfo ci) {
+        this.isTranslating = value.startsWith(Commands.COMMAND_PREFIX + TranslateCommand.LITERAL);
+    }
+
+    @Override
+    public boolean clientcommands_isTranslating() {
+        return this.isTranslating;
+    }
+}

src/main/java/net/earthcomputer/clientcommands/mixin/commands/translate/package-info.java

@@ -0,0 +1,4 @@
+@NullMarked
+package net.earthcomputer.clientcommands.mixin.commands.translate;
+
+import org.jspecify.annotations.NullMarked;

src/main/resources/clientcommands.aw

@@ -49,6 +49,12 @@ accessible field net/minecraft/client/renderer/ShaderManager$CompilationCache co
 # crelog
 accessible field net/minecraft/client/gui/screens/DisconnectedScreen parent Lnet/minecraft/client/gui/screens/Screen;
 
+# ctranslate
+accessible class net/minecraft/client/gui/components/ChatComponent$ClickableTextOnlyGraphicsAccess
+accessible field net/minecraft/client/gui/components/ChatComponent$ClickableTextOnlyGraphicsAccess output Lnet/minecraft/client/gui/ActiveTextCollector;
+accessible field net/minecraft/client/gui/ActiveTextCollector$ClickableStyleFinder testX I
+accessible field net/minecraft/client/gui/ActiveTextCollector$ClickableStyleFinder testY I
+
 # Game Options
 accessible field net/minecraft/client/OptionInstance value Ljava/lang/Object;
 

src/main/resources/mixins.clientcommands.json

@@ -81,6 +81,8 @@
     "commands.reply.ClientPacketListenerMixin",
     "commands.snap.MinecraftMixin",
     "commands.time.ClientClockManagerMixin",
+    "commands.translate.ChatComponent$1Mixin",
+    "commands.translate.ChatScreenMixin",
     "dataqueryhandler.ClientPacketListenerMixin",
     "events.ClientPacketListenerMixin",
     "events.GuiMixin",