Infdev cursor grab: the Pojav part

Also featuring:
Window resize on first key even poll

app_pojavlauncher/src/main/assets/components/caciocavallo/version

@@ -1 +1 @@
-HEllo PeoplE
+HEllo PeopLE

app_pojavlauncher/src/main/jni/input_bridge_v3.c

@@ -252,11 +252,14 @@ JNIEXPORT jstring JNICALL Java_org_lwjgl_glfw_CallbackBridge_nativeClipboard(JNI
     return pasteDst;
 }
 
+void Java_org_lwjgl_glfw_CallbackBridge_nativeSendScreenSize(JNIEnv* env, jclass clazz, jint width, jint height);
+
 JNIEXPORT jboolean JNICALL Java_org_lwjgl_glfw_CallbackBridge_nativeSetInputReady(JNIEnv* env, jclass clazz, jboolean inputReady) {
 #ifdef DEBUG
     LOGD("Debug: Changing input state, isReady=%d, isUseStackQueueCall=%d\n", inputReady, isUseStackQueueCall);
 #endif
     isInputReady = inputReady;
+    if(isInputReady) Java_org_lwjgl_glfw_CallbackBridge_nativeSendScreenSize(NULL, NULL, savedWidth, savedHeight);
     return isUseStackQueueCall;
 }
 

jre_lwjgl3glfw/build.gradle

@@ -20,6 +20,7 @@ jar {
             it.isDirectory() ? it : zipTree(it)
         }
     }
+    exclude 'net/java/openjdk/cacio/ctc/**'
 }
 
 java {

jre_lwjgl3glfw/src/main/java/net/java/openjdk/cacio/ctc/ExternalMouseReader.java

@@ -0,0 +1,6 @@
+package net.java.openjdk.cacio.ctc;
+
+public interface ExternalMouseReader {
+    int getX();
+    int getY();
+}

jre_lwjgl3glfw/src/main/java/net/java/openjdk/cacio/ctc/InfdevGrabHandler.java

@@ -0,0 +1,10 @@
+package net.java.openjdk.cacio.ctc;
+
+public class InfdevGrabHandler {
+    public static void setMouseReader(ExternalMouseReader reader) {
+
+    }
+    public static void setGrabbed(boolean grabbed) {
+
+    }
+}

jre_lwjgl3glfw/src/main/java/org/lwjgl/input/Cursor.java

@@ -29,6 +29,9 @@ public class Cursor {
 	/** Flag set when the cursor has been destroyed */
 	private boolean destroyed;
 
+	/** Flag set if the cursor is empty */
+	private boolean isEmpty;
+
 	/**
 	 * Constructs a new Cursor, with the given parameters. Mouse must have been
 	 * created before you can create Cursor objects. Cursor images are in ARGB
@@ -59,14 +62,19 @@ public class Cursor {
 	 */
 	public Cursor(int width, int height, int xHotspot, int yHotspot, int numImages, IntBuffer images, IntBuffer delays)
 			throws LWJGLException {
-
 		cursors = new CursorElement[numImages];
 
 		IntBuffer flippedImages = BufferUtils.createIntBuffer(images.limit());
 		flipImages(width, height, numImages, images, flippedImages);
 
 		ByteBuffer pixels = convertARGBIntBuffertoRGBAByteBuffer(width, height, flippedImages);
-
+		if(numImages == 1) {
+			isEmpty = true;
+			for(int i = 0; i < width*height; i++) if(pixels.get(i) != 0) {
+				System.out.println("Encountered non-zero byte at "+i+", custom cursor is not empty!");
+				isEmpty = false;
+			}
+		}
 		for (int i = 0; i < numImages; i++) {
 			int size = width * height;
 			ByteBuffer image = BufferUtils.createByteBuffer(size);
@@ -248,6 +256,14 @@ public class Cursor {
 		index = ++index % cursors.length;
 	}
 
+	/**
+	/* Returns wheteher the cursor image is empty or not
+	 */
+
+	/*package-private*/ boolean isEmpty() {
+		return isEmpty;
+	}
+
 	/**
 	 * A single cursor element, used when animating
 	 */
@@ -266,5 +282,4 @@ public class Cursor {
 				throw new RuntimeException("Error creating GLFW cursor");
 		}
 	}
-
 }

jre_lwjgl3glfw/src/main/java/org/lwjgl/input/InfdevMouse.java

@@ -0,0 +1,25 @@
+package org.lwjgl.input;
+
+import net.java.openjdk.cacio.ctc.ExternalMouseReader;
+import net.java.openjdk.cacio.ctc.InfdevGrabHandler;
+
+public class InfdevMouse implements ExternalMouseReader, Mouse.EmptyCursorGrabListener {
+    static {
+        InfdevGrabHandler.setMouseReader(new InfdevMouse());
+    }
+
+    @Override
+    public int getX() {
+        return Mouse.getAbsoluteX();
+    }
+
+    @Override
+    public int getY() {
+        return Mouse.getAbsoluteY();
+    }
+
+    @Override
+    public void onGrab(boolean grabbing) {
+        InfdevGrabHandler.setGrabbed(grabbing);
+    }
+}

jre_lwjgl3glfw/src/main/java/org/lwjgl/input/Mouse.java

@@ -31,6 +31,7 @@
  */
         package org.lwjgl.input;
 
+import java.lang.reflect.Constructor;
 import java.nio.ByteBuffer;
 import java.nio.IntBuffer;
 import java.security.AccessController;
@@ -144,6 +145,7 @@ public class Mouse {
     private static boolean		isGrabbed;
 
     private static InputImplementation implementation;
+    private static EmptyCursorGrabListener grabListener = null;
 
     /** Whether we need cursor animation emulation */
     private static final boolean emulateCursorAnimation = 	LWJGLUtil.getPlatform() == LWJGLUtil.PLATFORM_WINDOWS ||
@@ -151,6 +153,16 @@ public class Mouse {
 
     private static  boolean clipMouseCoordinatesToWindow = !getPrivilegedBoolean("org.lwjgl.input.Mouse.allowNegativeMouseCoords");
 
+    static {
+        try {
+            Class infdevMouse = Class.forName("org.lwjgl.input.InfdevMouse");
+            Constructor constructor = infdevMouse.getConstructor();
+            grabListener = (EmptyCursorGrabListener) constructor.newInstance();
+        }catch (Throwable e) {
+            e.printStackTrace();
+        }
+    }
+
     /**
      * Mouse cannot be constructed.
      */
@@ -164,7 +176,6 @@ public class Mouse {
      */
     public static Cursor getNativeCursor() {
             return currentCursor;
-
     }
 
     /**
@@ -181,6 +192,14 @@ public class Mouse {
      */
     public static Cursor setNativeCursor(Cursor cursor) throws LWJGLException {
         //dummy
+        if(cursor == null && currentCursor.isEmpty()) {
+            Mouse.setGrabbed(false);
+            if(grabListener != null) grabListener.onGrab(false);
+        }
+        if(cursor != null && cursor.isEmpty()) {
+            Mouse.setGrabbed(true);
+            if(grabListener != null) grabListener.onGrab(true);
+        }
         currentCursor = cursor;
         return currentCursor;
     }
@@ -625,4 +644,18 @@ public class Mouse {
     public static boolean isInsideWindow() {
         return implementation.isInsideWindow();
     }
+
+    /*
+     * Package private methods to get the absolute unclipped X/Y coordiates
+     */
+    /*package-private*/ static int getAbsoluteX() {
+        return absolute_x;
+    }
+    /*package-private*/ static int getAbsoluteY() {
+        return absolute_y;
+    }
+
+    interface EmptyCursorGrabListener {
+        void onGrab(boolean grabbing);
+    }
 }