cursed garbage to support moving window during drag

src/main/java/io/wispforest/owo/ui/window/OwoWindow.java

@@ -35,6 +35,8 @@
 import static org.lwjgl.glfw.GLFW.glfwSetCharModsCallback;
 
 public abstract class OwoWindow<R extends ParentComponent> extends SupportsFeaturesImpl<WindowContext> implements WindowContext {
+    private static final boolean USE_GLOBAL_POS = glfwGetPlatform() != GLFW_PLATFORM_WAYLAND;
+
     private String title = "owo-ui window";
     private int screenWidth = 854;
     private int screenHeight = 480;
@@ -57,10 +59,15 @@ public abstract class OwoWindow<R extends ParentComponent> extends SupportsFeatu
 
     private int mouseX = -1;
     private int mouseY = -1;
+    private int globalMouseX = -1;
+    private int globalMouseY = -1;
     private int deltaX = 0;
     private int deltaY = 0;
     private int activeButton = -1;
 
+    private final int[] globalX = new int[1];
+    private final int[] globalY = new int[1];
+
     private final EventStream<WindowFramebufferResized> framebufferResizedEvents = WindowFramebufferResized.newStream();
 
     public OwoWindow() {
@@ -186,11 +193,25 @@ public void open() {
             int newX = (int) (xpos / scaleFactor);
             int newY = (int) (ypos / scaleFactor);
 
-            deltaX += newX - mouseX;
-            deltaY += newY - mouseY;
+            if (!USE_GLOBAL_POS) {
+                this.deltaX += newX - mouseX;
+                this.deltaY += newY - mouseY;
+            }
+
+            this.mouseY = newY;
+            this.mouseX = newX;
 
-            mouseY = newY;
-            mouseX = newX;
+            if (USE_GLOBAL_POS) {
+                glfwGetWindowPos(handle, this.globalX, this.globalY);
+                int newGlobalX = (int) ((this.globalX[0] + xpos) / scaleFactor);
+                int newGlobalY = (int) ((this.globalY[0] + ypos) / scaleFactor);
+
+                this.deltaX += newGlobalX - this.globalMouseX;
+                this.deltaY += newGlobalY - this.globalMouseY;
+
+                this.globalMouseX = newGlobalX;
+                this.globalMouseY = newGlobalY;
+            }
         })));
 
         glfwSetMouseButtonCallback(handle, stowAndReturn(GLFWMouseButtonCallback.create((window, button, action, mods) -> {

src/testmod/java/io/wispforest/uwu/client/MoveButtonComponent.java

@@ -0,0 +1,52 @@
+package io.wispforest.uwu.client;
+
+import io.wispforest.owo.ui.component.ButtonComponent;
+import io.wispforest.owo.ui.window.OwoWindow;
+import io.wispforest.owo.ui.window.context.CurrentWindowContext;
+import net.minecraft.text.Text;
+import org.lwjgl.glfw.GLFW;
+
+import java.util.function.Consumer;
+
+public class MoveButtonComponent extends ButtonComponent {
+    private boolean buttoning = false;
+
+    public MoveButtonComponent(Text message, Consumer<ButtonComponent> onPress) {
+        super(message, onPress);
+    }
+
+    @Override
+    public boolean onMouseDown(double mouseX, double mouseY, int button) {
+        if (button == GLFW.GLFW_MOUSE_BUTTON_LEFT) this.buttoning = true;
+
+        return super.onMouseDown(mouseX, mouseY, button);
+    }
+
+    @Override
+    public boolean onMouseUp(double mouseX, double mouseY, int button) {
+        buttoning = false;
+
+        return super.onMouseUp(mouseX, mouseY, button);
+    }
+
+    @Override
+    public boolean onMouseDrag(double mouseX, double mouseY, double deltaX, double deltaY, int button) {
+        if (buttoning) {
+            var window = (OwoWindow<?>) CurrentWindowContext.current();
+            int[] windowWidth = new int[1];
+            int[] windowHeight = new int[1];
+
+            GLFW.glfwGetWindowSize(window.handle(), windowWidth, windowHeight);
+
+            double factor = window.scaleFactor() * windowWidth[0] / window.framebufferWidth();
+
+            int[] windowX = new int[1];
+            int[] windowY = new int[1];
+
+            GLFW.glfwGetWindowPos(window.handle(), windowX, windowY);
+            GLFW.glfwSetWindowPos(window.handle(), windowX[0] + (int)(deltaX * factor), windowY[0] + (int)(deltaY * factor));
+        }
+
+        return super.onMouseDrag(mouseX, mouseY, deltaX, deltaY, button);
+    }
+}

src/testmod/java/io/wispforest/uwu/client/UwuTestWindow.java

@@ -35,6 +35,7 @@ protected void build(FlowLayout rootComponent) {
         var inner = Containers.verticalFlow(Sizing.content(), Sizing.content());
         rootComponent.child(Containers.verticalScroll(Sizing.fill(100), Sizing.fill(100), inner));
 
+        inner.child(new MoveButtonComponent(Text.literal("hehe move"), unused -> {}));
         inner.child(Components.label(Text.of("Are you an owl?")));
 
         var textbox = Components.textBox(Sizing.fixed(60));