From 6d35cfe3a20d0c68c82345cc9a3454a682408850 Mon Sep 17 00:00:00 2001
From: samstalhandske <samstalhandske@hotmail.com>
Date: Mon, 26 Jan 2026 20:42:30 +0100
Subject: [PATCH] Focus event

---
 window.odin         | 48 ++++++++++++++++++++++++++++++++++++++++-
 window_windows.odin | 52 ++++++++++++++++++++++++++++++++++++++++++++-
 2 files changed, 98 insertions(+), 2 deletions(-)

diff --git a/window.odin b/window.odin
index a42fa84..8946245 100644
--- a/window.odin
+++ b/window.odin
@@ -6,6 +6,7 @@ import "core:fmt"
 Window :: struct {
     title: string,
     width, height: u16,
+    focused: bool,
 
     backend: Backend_Info,
 
@@ -16,12 +17,17 @@ Event_Queue :: queue.Queue(Event)
 
 Event :: union {
     Event_Quit,
+    Event_Focus,
     Event_Input,
     Event_Resize,
 }
 
 Event_Quit :: struct {}
 
+Event_Focus :: struct {
+    is_focused: bool,
+}
+
 Event_Input_State :: enum {
     Up,
     Down,
@@ -82,6 +88,7 @@ create :: proc(width, height: u16) -> (^Window, bool) {
     }
 
     set_title(w, "Window")
+    // show_cursor(w, true)
 
     return w, true
 }
@@ -99,6 +106,33 @@ set_title :: proc(window: ^Window, title: string) {
     }
 }
 
+show_cursor :: proc(window: ^Window, show: bool) {
+    when ODIN_OS == .Windows {
+        show_cursor_window(window, show)
+    }
+    else {
+        #assert(false, "Missing implementation for 'show_cursor'.")
+    }
+}
+
+cursor_visible :: proc(window: ^Window) -> bool {
+    when ODIN_OS == .Windows {
+        return cursor_visible_windows(window)
+    }
+    else {
+        #assert(false, "Missing implementation for 'cursor_visible'.")
+    }
+
+    return false
+}
+
+set_cursor_position :: proc(window: ^Window, pos: [2]u32) {
+    // fmt.printfln("Set cursor pos: %v:%v", pos.x, pos.y)
+    when ODIN_OS == .Windows {
+        set_cursor_position_windows(window, pos)
+    }
+}
+
 get_pointer_to_surface :: proc(window: ^Window) -> rawptr {
     when ODIN_OS == .Windows {
         return window.backend.hwnd
@@ -116,7 +150,7 @@ update :: proc(window: ^Window, out_event: ^Event) -> bool {
         update_windows(window)
     }
     else {
-        #assert(false, "Missing implementation for 'set_title'.")
+        #assert(false, "Missing implementation for 'update'.")
     }
     
     out_event^ = nil
@@ -126,6 +160,18 @@ update :: proc(window: ^Window, out_event: ^Event) -> bool {
         return false
     }
 
+    switch e in event {
+        case Event_Quit: {}
+        case Event_Focus: {
+            window.focused = e.is_focused
+        }
+        case Event_Resize: {
+            window.width = e.new_width
+            window.height = e.new_height
+        }
+        case Event_Input: {}
+    }
+
     assert(event != nil)
     out_event^ = event
 
diff --git a/window_windows.odin b/window_windows.odin
index 79b24c5..3ea0bff 100644
--- a/window_windows.odin
+++ b/window_windows.odin
@@ -1,3 +1,4 @@
+#+private
 package window
 
 import "core:container/queue"
@@ -36,6 +37,13 @@ Backend_Info :: struct {
     event_queue := get_event_queue(hwnd)
     switch(msg) {
         case win.WM_CREATE: return wm_create(hwnd, lparam)
+        case win.WM_SETFOCUS, win.WM_KILLFOCUS: {
+            if event_queue != nil {
+                queue.push_back(event_queue, Event_Focus {
+                    is_focused = msg == win.WM_SETFOCUS
+                })
+            }
+        }
         case win.WM_KEYDOWN, win.WM_SYSKEYDOWN: {
             input_event: Event_Input = Event_Keyboard {
                 virtual_key = get_virtual_key_windows(i32(wparam)),
@@ -129,7 +137,7 @@ Backend_Info :: struct {
     }
 
     return 0
-    }
+}
 
 WINDOW_CLASS_NAME :: "ENSENN_WINDOW"
 
@@ -192,6 +200,48 @@ set_title_windows :: proc(window: ^Window) {
     win.SetWindowTextW(window.backend.hwnd, win.utf8_to_wstring(window.title))
 }
 
+show_cursor_window :: proc(window: ^Window, show: bool) {
+    assert(window != nil)
+    
+    if show == cursor_visible_windows(window) {
+        if show {
+            fmt.printfln("Tried to show cursor but it's already visible.")
+        }
+        else {
+            fmt.printfln("Tried to hide cursor but it's already not visible.")
+        }
+        return
+    }
+    
+    for { // Win32 :)))
+        counter := win.ShowCursor(show ? win.TRUE : win.FALSE)
+        if (show && counter >= 0) || (!show && counter < 0) {
+            break
+        }
+    }
+
+    win.ShowCursor(show ? win.TRUE : win.FALSE)
+}
+
+cursor_visible_windows :: proc(window: ^Window) -> bool {
+    old_count := win.ShowCursor(win.TRUE)
+    win.ShowCursor(win.FALSE)
+    return old_count >= 0
+}
+
+set_cursor_position_windows :: proc(window: ^Window, pos: [2]u32) {
+    pt := win.POINT { x = i32(pos.x), y = i32(pos.y) }
+    rect: win.RECT
+    win.GetClientRect(window.backend.hwnd, &rect)
+
+    ok := win.ClientToScreen(window.backend.hwnd, &pt)
+    if !ok {
+        return
+    }
+
+    win.SetCursorPos(pt.x, pt.y)
+}
+
 update_windows :: proc(window: ^Window) {
     assert(window != nil)