Allow ignoring accidental input clicking on the unfocused window

platforms/common/src/main/java/dynamic_fps/impl/DynamicFPSMod.java

@@ -6,6 +6,7 @@
 import dynamic_fps.impl.config.Config;
 import dynamic_fps.impl.config.DynamicFPSConfig;
 import dynamic_fps.impl.config.option.GraphicsState;
+import dynamic_fps.impl.feature.state.ClickIgnoreHandler;
 import dynamic_fps.impl.service.ModCompat;
 import dynamic_fps.impl.feature.battery.BatteryToast;
 import dynamic_fps.impl.feature.battery.BatteryTracker;
@@ -46,6 +47,7 @@ public class DynamicFPSMod {
 	private static final Minecraft minecraft = Minecraft.getInstance();
 
 	private static @Nullable WindowObserver window;
+	private static @Nullable ClickIgnoreHandler clickHandler;
 
 	private static long lastRender;
 
@@ -143,6 +145,8 @@ public static void toggleForceLowFPS() {
 	public static void setWindow(long address) {
 		IdleHandler.setWindow(address);
 		window = new WindowObserver(address);
+
+		initClickHandler();
 	}
 
 	public static boolean checkForRender() {
@@ -198,6 +202,7 @@ public static void onBatteryStatusChanged(State before, State after) {
 	// Internal logic
 
 	private static void doInit() {
+		initClickHandler();
 		SmoothVolumeHandler.init();
 
 		if (!BatteryTracker.isFeatureEnabled()) {
@@ -214,6 +219,16 @@ private static void doInit() {
 		}
 	}
 
+	private static void initClickHandler() {
+		if (window == null || clickHandler != null) {
+			return;
+		}
+
+
+		if (ClickIgnoreHandler.isFeatureActive()) {
+			clickHandler = new ClickIgnoreHandler(window.address());
+		}
+	}
 	private static void showNotification(String titleTranslationKey, String iconPath) {
 		if (!DynamicFPSConfig.INSTANCE.batteryTracker().notifications()) {
 			return;

platforms/common/src/main/java/dynamic_fps/impl/compat/ClothConfig.java

@@ -11,6 +11,7 @@
 import dynamic_fps.impl.config.Config;
 import dynamic_fps.impl.config.option.IdleCondition;
 import dynamic_fps.impl.util.Components;
+import dynamic_fps.impl.config.option.IgnoreInitialClick;
 import dynamic_fps.impl.util.VariableStepTransformer;
 import me.shedaniel.clothconfig2.api.ConfigBuilder;
 import me.shedaniel.clothconfig2.api.ConfigCategory;
@@ -63,6 +64,19 @@ public static Screen genConfigScreen(Screen parent) {
 			.build()
 		);
 
+		misc.add(
+			entryBuilder.startEnumSelector(
+				Components.translatable("config", "ignore_initial_click"),
+				IgnoreInitialClick.class,
+				config.ignoreInitialClick()
+			)
+			.setDefaultValue(defaultConfig.ignoreInitialClick())
+			.setSaveConsumer(config::setIgnoreInitialClick)
+			.setEnumNameProvider(ClothConfig::ignoreInitialClickMessage)
+			.setTooltip(Components.translatable("config", "ignore_initial_click_tooltip"))
+			.build()
+		);
+
 		general.addEntry(misc.build());
 		SubCategoryBuilder idle = entryBuilder.startSubCategory(Components.translatable("config", "feature.idle"));
 
@@ -377,6 +391,10 @@ private static Component volumeMultiplierMessage(int value) {
 		return Components.literal(Integer.toString(value) + "%");
 	}
 
+	public static Component ignoreInitialClickMessage(Enum<IdleCondition> state) {
+		return Components.translatable("config", "ignore_initial_click_" + state.toString().toLowerCase(Locale.ROOT));
+	}
+
 	public static Component IdleConditionMessage(Enum<IdleCondition> state) {
 		return Components.translatable("config", "idle_condition_" + state.toString().toLowerCase(Locale.ROOT));
 	}

platforms/common/src/main/java/dynamic_fps/impl/config/DynamicFPSConfig.java

@@ -4,10 +4,12 @@
 
 import com.google.gson.annotations.SerializedName;
 import dynamic_fps.impl.PowerState;
+import dynamic_fps.impl.config.option.IgnoreInitialClick;
 
 public final class DynamicFPSConfig {
 	private boolean enabled;
 	private boolean uncapMenuFrameRate;
+	private IgnoreInitialClick ignoreInitialClick;
 	private IdleConfig idle;
 	private BatteryTrackerConfig batteryTracker;
 	private VolumeTransitionConfig volumeTransitionSpeed;
@@ -65,6 +67,14 @@ public void setUncapMenuFrameRate(boolean value) {
 		this.uncapMenuFrameRate = value;
 	}
 
+	public IgnoreInitialClick ignoreInitialClick() {
+		return this.ignoreInitialClick;
+	}
+
+	public void setIgnoreInitialClick(IgnoreInitialClick value) {
+		this.ignoreInitialClick = value;
+	}
+
 	public boolean downloadNatives() {
 		return this.downloadNatives;
 	}

platforms/common/src/main/java/dynamic_fps/impl/config/option/IgnoreInitialClick.java

@@ -0,0 +1,7 @@
+package dynamic_fps.impl.config.option;
+
+public enum IgnoreInitialClick {
+	DISABLED,
+	IN_WORLD,
+	CONSTANT;
+}

platforms/common/src/main/java/dynamic_fps/impl/feature/state/ClickIgnoreHandler.java

@@ -0,0 +1,69 @@
+package dynamic_fps.impl.feature.state;
+
+import dynamic_fps.impl.config.DynamicFPSConfig;
+import dynamic_fps.impl.config.option.IgnoreInitialClick;
+import net.minecraft.client.Minecraft;
+import org.lwjgl.glfw.GLFW;
+import org.lwjgl.glfw.GLFWMouseButtonCallback;
+import org.lwjgl.glfw.GLFWWindowFocusCallback;
+
+import java.time.Instant;
+
+public class ClickIgnoreHandler {
+	private final long address;
+	private long focusedAt;
+
+	private final GLFWWindowFocusCallback previousFocusCallback;
+	private final GLFWMouseButtonCallback previousClickCallback;
+
+	private static final Minecraft MINECRAFT = Minecraft.getInstance();
+
+	public ClickIgnoreHandler(long address) {
+		this.address = address;
+
+		this.previousFocusCallback = GLFW.glfwSetWindowFocusCallback(this.address, this::onFocusChanged);
+		this.previousClickCallback = GLFW.glfwSetMouseButtonCallback(this.address, this::onMouseClicked);
+	}
+
+	public static boolean isFeatureActive() {
+		return DynamicFPSConfig.INSTANCE.ignoreInitialClick() != IgnoreInitialClick.DISABLED;
+	}
+
+	private boolean shouldIgnoreClick() {
+		IgnoreInitialClick config = DynamicFPSConfig.INSTANCE.ignoreInitialClick();
+
+		if (config == IgnoreInitialClick.DISABLED) {
+			return false;
+		}
+
+		if (config == IgnoreInitialClick.IN_WORLD && MINECRAFT.screen != null) {
+			return false;
+		}
+
+		return this.focusedAt + 20 >= Instant.now().toEpochMilli();
+	}
+
+	private void onFocusChanged(long address, boolean focused) {
+		if (this.isCurrentWindow(address) && focused) {
+			this.focusedAt = Instant.now().toEpochMilli();
+		}
+
+		if (this.previousFocusCallback != null) {
+			this.previousFocusCallback.invoke(address, focused);
+		}
+	}
+
+	private void onMouseClicked(long window, int button, int action, int mods) {
+		if (this.isCurrentWindow(window) && shouldIgnoreClick()) {
+			return;
+		}
+
+		if (this.previousClickCallback != null) {
+			this.previousClickCallback.invoke(window, button, action, mods);
+		}
+	}
+
+	private boolean isCurrentWindow(long address) {
+		return address == this.address;
+	}
+}

platforms/common/src/main/java/dynamic_fps/impl/feature/state/WindowObserver.java

@@ -1,12 +1,17 @@
 package dynamic_fps.impl.feature.state;
 
+import dynamic_fps.impl.util.Logging;
+import net.minecraft.client.Minecraft;
 import org.lwjgl.glfw.GLFW;
 import org.lwjgl.glfw.GLFWCursorEnterCallback;
+import org.lwjgl.glfw.GLFWMouseButtonCallback;
 import org.lwjgl.glfw.GLFWWindowFocusCallback;
 import org.lwjgl.glfw.GLFWWindowIconifyCallback;
 
 import dynamic_fps.impl.DynamicFPSMod;
 
+import java.time.Instant;
+
 public class WindowObserver {
 	private final long address;
 

platforms/common/src/main/resources/assets/dynamic_fps/data/default_config.json

@@ -1,6 +1,7 @@
 {
     "enabled": true,
     "uncap_menu_frame_rate": false,
+    "ignore_initial_click": "disabled",
     "idle": {
         "timeout": 300,
         "condition": "vanilla"

platforms/common/src/main/resources/assets/dynamic_fps/lang/en_us.json

@@ -39,6 +39,13 @@
     "config.dynamic_fps.uncap_menu_frame_rate": "Uncap Menu FPS",
     "config.dynamic_fps.uncap_menu_frame_rate_tooltip": "Remove the 60 FPS limit in the main menu.",
 
+    "config.dynamic_fps.ignore_initial_click": "Ignore Initial Click",
+    "config.dynamic_fps.ignore_initial_click_tooltip": "Ignore accidental input when clicking on the unfocused game window.",
+
+    "config.dynamic_fps.ignore_initial_click_disabled": "Disabled",
+    "config.dynamic_fps.ignore_initial_click_in_world": "In World",
+    "config.dynamic_fps.ignore_initial_click_constant": "Constant",
+
     "config.dynamic_fps.battery_tracker": "Battery Tracking",
     "config.dynamic_fps.battery_tracker_tooltip": "Toggle all battery-related features on or off.",