feat(windows): show icon in terminal titlebar, taskbar #20607

closes #20071

1 files changed, 60 insertions, 0 deletions

diff --git a/src/nvim/main.c b/src/nvim/main.c
index d5fa992218..f6ec08c8e0 100644
--- a/src/nvim/main.c
+++ b/src/nvim/main.c
@@ -207,6 +207,57 @@ void early_init(mparm_T *paramp)
   init_signs();
 }
 
+#ifdef MSWIN
+HWND hWnd = NULL;
+static HICON hOrigIconSmall = NULL;
+static HICON hOrigIcon = NULL;
+
+/// Save Windows console icon to be reset later
+static void SaveWin32ConsoleIcon(void)
+{
+  if ((hWnd = GetConsoleWindow()) == NULL) {
+    return;
+  }
+  hOrigIconSmall = (HICON)SendMessage(hWnd, WM_GETICON, (WPARAM)ICON_SMALL, (LPARAM)0);
+  hOrigIcon = (HICON)SendMessage(hWnd, WM_GETICON, (WPARAM)ICON_BIG, (LPARAM)0);
+}
+
+static void SetConsoleIcon(HWND hWindow, HICON hIconSmall, HICON hIcon)
+{
+  if (hWindow == NULL) {
+    return;
+  }
+  if (hIconSmall != NULL) {
+    SendMessage(hWnd, WM_SETICON, (WPARAM)ICON_SMALL, (LPARAM)hIconSmall);
+  }
+  if (hIcon != NULL) {
+    SendMessage(hWnd, WM_SETICON, (WPARAM)ICON_BIG, (LPARAM)hIcon);
+  }
+}
+
+/// Reset Windows console icon to original
+static void ResetWin32ConsoleIcon(void)
+{
+  SetConsoleIcon(hWnd, hOrigIconSmall, hOrigIcon);
+}
+
+/// Set Neovim logo as Windows console icon
+static void SetWin32ConsoleIcon(void)
+{
+  const char *vimruntime = os_getenv("VIMRUNTIME");
+  if (vimruntime != NULL) {
+    snprintf(NameBuff, MAXPATHL, "%s" _PATHSEPSTR "neovim.ico", vimruntime);
+    if (!os_path_exists(NameBuff)) {
+      WLOG("neovim.ico not found: %s", NameBuff);
+    } else {
+      HICON hVimIcon = LoadImage(NULL, NameBuff, IMAGE_ICON, 64, 64,
+                                 LR_LOADFROMFILE | LR_LOADMAP3DCOLORS);
+      SetConsoleIcon(hWnd, hVimIcon, hVimIcon);
+    }
+  }
+}
+#endif
+
 #ifdef MAKE_LIB
 int nvim_main(int argc, char **argv);  // silence -Wmissing-prototypes
 int nvim_main(int argc, char **argv)
@@ -256,6 +307,11 @@ int main(int argc, char **argv)
 
   early_init(&params);
 
+#ifdef MSWIN
+  SaveWin32ConsoleIcon();
+  SetWin32ConsoleIcon();
+#endif
+
   set_argv_var(argv, argc);  // set v:argv
 
   // Check if we have an interactive window.
@@ -721,6 +777,10 @@ void getout(int exitval)
     garbage_collect(false);
   }
 
+#ifdef MSWIN
+  ResetWin32ConsoleIcon();
+#endif
+
   os_exit(exitval);
 }