wineconsole: Properly handle (user)-window resizing wrt the console.

programs/wineconsole/user.c

@@ -778,6 +778,7 @@ static void	WCUSER_Paint(const struct inner_data* data)
 {
     PAINTSTRUCT		ps;
 
+    if (data->in_set_config) return; /* in order to avoid some flicker */
     BeginPaint(data->hWnd, &ps);
     BitBlt(ps.hdc, 0, 0,
            data->curcfg.win_width * data->curcfg.cell_width,
@@ -1329,6 +1330,10 @@ static LRESULT CALLBACK WCUSER_Proc(HWND hWnd, UINT uMsg, WPARAM wParam, LPARAM
         if (!HIWORD(lParam)) return DefWindowProcW(hWnd, uMsg, wParam, lParam);
 	WCUSER_SetMenuDetails(data, GetSystemMenu(data->hWnd, FALSE));
 	break;
+    case WM_SIZE:
+        WINECON_ResizeWithContainer(data, LOWORD(lParam) / data->curcfg.cell_width,
+                                    HIWORD(lParam) / data->curcfg.cell_height);
+        break;
     default:
         return DefWindowProcW(hWnd, uMsg, wParam, lParam);
     }

programs/wineconsole/winecon_private.h

@@ -60,6 +60,7 @@ struct inner_data {
     HANDLE		hSynchro;	/* waitable handle signalled by server when something in server has been modified */
     HWND		hWnd;           /* handle of 'user' window or NULL for 'curses' */
     INT                 nCmdShow;       /* argument of WinMain */
+    BOOL                in_set_config;  /* to handle re-entrant calls to WINECON_SetConfig */
 
     int			(*fnMainLoop)(struct inner_data* data);
     void		(*fnPosCursor)(const struct inner_data* data);
@@ -77,6 +78,7 @@ struct inner_data {
 
 /* from wineconsole.c */
 extern void WINECON_Fatal(const char* msg);
+extern void WINECON_ResizeWithContainer(struct inner_data* data, int width, int height);
 extern int  WINECON_GetHistorySize(HANDLE hConIn);
 extern int  WINECON_GetHistoryMode(HANDLE hConIn);
 extern BOOL WINECON_GetConsoleTitle(HANDLE hConIn, WCHAR* buffer, size_t len);

programs/wineconsole/wineconsole.c

@@ -82,6 +82,34 @@ static void WINECON_FetchCells(struct inner_data* data, int upd_tp, int upd_bm)
 }
 
 /******************************************************************
+ *		WINECON_ResizeWithContainer
+ *
+ * For console embedded in a container (e.g. user in a win32 window, or (n)curses
+ * in a TERM, perform resize of console (screen buffer and window) to fit in
+ * (new) container size.
+ */
+void WINECON_ResizeWithContainer(struct inner_data* data, int width, int height)
+{
+    struct config_data  cfg;
+
+    if (data->in_set_config) return;
+
+    cfg = data->curcfg;
+    cfg.win_width  = width;
+    cfg.win_height = height;
+
+    /* auto size screen-buffer if it's now smaller than window */
+    if (cfg.sb_width  < cfg.win_width)  cfg.sb_width = cfg.win_width;
+    if (cfg.sb_height < cfg.win_height) cfg.sb_height = cfg.win_height;
+
+    /* and reset window pos so that we don't display outside of the screen-buffer */
+    if (cfg.win_pos.X + cfg.win_width  > cfg.sb_width)  cfg.win_pos.X = cfg.sb_width  - cfg.win_width;
+    if (cfg.win_pos.Y + cfg.win_height > cfg.sb_height) cfg.win_pos.Y = cfg.sb_height - cfg.win_height;
+
+    WINECON_SetConfig(data, &cfg);
+}
+
+/******************************************************************
  *		WINECON_SetHistorySize
  *
  *
@@ -336,6 +364,8 @@ int	WINECON_GrabChanges(struct inner_data* data)
  */
 void     WINECON_SetConfig(struct inner_data* data, const struct config_data* cfg)
 {
+    if (data->in_set_config) return;
+    data->in_set_config = TRUE;
     if (data->curcfg.cursor_size != cfg->cursor_size ||
         data->curcfg.cursor_visible != cfg->cursor_visible)
     {
@@ -467,6 +497,7 @@ void     WINECON_SetConfig(struct inner_data* data, const struct config_data* cf
      * in order to get data correctly updated
      */
     WINECON_GrabChanges(data);
+    data->in_set_config = FALSE;
 }
 
 /******************************************************************