From 693d830f69b9a4ce6f956f4a688f41180156473e Mon Sep 17 00:00:00 2001
From: Alessandro Iezzi <aiezzi@alessandroiezzi.it>
Date: Tue, 20 May 2025 20:23:59 +0200
Subject: Add logic to get coordinates of the mouse button click

---
 src/main/engine/ui/types.h  |  4 ++++
 src/main/engine/ui/ui.h     |  2 +-
 src/main/engine/ui/x11/ui.c | 22 +++++++++++++++++++---
 3 files changed, 24 insertions(+), 4 deletions(-)

(limited to 'src/main/engine/ui')

diff --git a/src/main/engine/ui/types.h b/src/main/engine/ui/types.h
index 23943a2..6a9fedb 100644
--- a/src/main/engine/ui/types.h
+++ b/src/main/engine/ui/types.h
@@ -30,4 +30,8 @@ typedef struct UIEventResize {
 	int height;
 } UIEventResize;
 
+typedef struct UIMouseButtonPressed {
+	int x, y;
+} UIMouseButtonPressed;
+
 #endif /* __TYPES_H__ */
diff --git a/src/main/engine/ui/ui.h b/src/main/engine/ui/ui.h
index 3d32c1a..432d158 100644
--- a/src/main/engine/ui/ui.h
+++ b/src/main/engine/ui/ui.h
@@ -28,7 +28,7 @@ void ui_set_title(const char *title);
 void ui_set_expose_listener(void (*expose_event)());
 void ui_set_resize_listener(void (*resize_event)(UIEventResize *));
 void ui_set_loop_listener(void (*event)());
-void ui_set_mouse_press_listener(void (*event)());
+void ui_set_mouse_press_listener(void (*event)(UIMouseButtonPressed *));
 void ui_set_generic_listener(void (*generic_event)(int type));
 
 #endif /* __UI_H__ */
diff --git a/src/main/engine/ui/x11/ui.c b/src/main/engine/ui/x11/ui.c
index 7a325ce..cd35edf 100644
--- a/src/main/engine/ui/x11/ui.c
+++ b/src/main/engine/ui/x11/ui.c
@@ -35,7 +35,7 @@ static int close_window = 0;
 void (*on_loop_event)();
 void (*on_expose_event)();
 void (*on_resize_event)(UIEventResize *);
-void (*on_mouse_press_event)();
+void (*on_mouse_press_event)(UIMouseButtonPressed *);
 void (*on_generic_event)(int);
 
 void cleanup(void);
@@ -155,12 +155,28 @@ ui_on_keypress(XEvent event)
 	close_window = 1;
 }
 
+static void
+ui_get_mouse_position(Display *display, Window window, int *x, int *y) {
+	Window root_return, child_return;
+	int root_x, root_y;
+	unsigned int mask_return;
+
+	XQueryPointer(display, window, &root_return, &child_return,
+				  &root_x, &root_y, x, y, &mask_return);
+}
+
 static void
 ui_on_mouse_press(XEvent event)
 {
 	if (event.type != ButtonPress) return;
 	if (on_mouse_press_event != NULL) {
-		on_mouse_press_event();
+		UIMouseButtonPressed *mbp = malloc(sizeof(UIMouseButtonPressed));
+		if (mbp == NULL) {
+			log_error("Error allocating UIMouseButtonPressed");
+			exit(EXIT_FAILURE);
+		}
+		ui_get_mouse_position(display, window, &mbp->x, &mbp->y);
+		on_mouse_press_event(mbp);
 	}
 }
 
@@ -197,7 +213,7 @@ ui_set_resize_listener(void (*resize_event)(UIEventResize *))
 }
 
 void
-ui_set_mouse_press_listener(void (*mouse_press_event)())
+ui_set_mouse_press_listener(void (*mouse_press_event)(UIMouseButtonPressed *))
 {
 	on_mouse_press_event = mouse_press_event;
 }
-- 
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