diff options
| -rw-r--r-- | src/xterm.c | 39 |
1 files changed, 39 insertions, 0 deletions
diff --git a/src/xterm.c b/src/xterm.c index ddbf8e06664..fe17f3d5bba 100644 --- a/src/xterm.c +++ b/src/xterm.c @@ -28542,6 +28542,27 @@ x_set_window_size_1 (struct frame *f, bool change_gravity, } } +/* Resizing an occluding window (such as a child frame) immediately + triggers a fill with background color on the exposed area on the + parent when the X server receives the corresponding command + (XResizeWindow, XMoveResizeWindow, etc). But only if the window has + a background assigned. Change it to None to block that effect. */ +static void +x_suspend_background_fills (struct frame *f) +{ + Display *dpy = FRAME_X_DISPLAY (f); + + XSetWindowBackgroundPixmap (dpy, FRAME_X_WINDOW (f), None); +} + +/* No automatmic fill happens when the background is restored. */ +static void +x_restore_background_fills (struct frame *f) +{ + Display *dpy = FRAME_X_DISPLAY (f); + + XSetWindowBackground (dpy, FRAME_X_WINDOW (f), FRAME_BACKGROUND_PIXEL (f)); +} /* Change the size of frame F's X window to WIDTH and HEIGHT pixels. If CHANGE_GRAVITY, change to top-left-corner window gravity for this @@ -28554,6 +28575,9 @@ x_set_window_size (struct frame *f, bool change_gravity, { block_input (); + if (FRAME_PARENT_FRAME (f)) + x_suspend_background_fills (FRAME_PARENT_FRAME (f)); + #ifdef USE_GTK if (FRAME_GTK_WIDGET (f)) xg_frame_set_char_size (f, width, height); @@ -28565,6 +28589,9 @@ x_set_window_size (struct frame *f, bool change_gravity, x_clear_under_internal_border (f); #endif /* not USE_GTK */ + if (FRAME_PARENT_FRAME (f)) + x_restore_background_fills (FRAME_PARENT_FRAME (f)); + /* If cursor was outside the new size, mark it as off. */ mark_window_cursors_off (XWINDOW (f->root_window)); @@ -28626,6 +28653,9 @@ x_set_window_size_and_position (struct frame *f, int width, int height) { block_input (); + if (FRAME_PARENT_FRAME (f)) + x_suspend_background_fills (FRAME_PARENT_FRAME (f)); + #ifdef USE_GTK if (FRAME_GTK_WIDGET (f)) xg_frame_set_size_and_position (f, width, height); @@ -28638,6 +28668,9 @@ x_set_window_size_and_position (struct frame *f, int width, int height) if (!FRAME_PARENT_FRAME (f)) x_clear_under_internal_border (f); + if (FRAME_PARENT_FRAME (f)) + x_restore_background_fills (FRAME_PARENT_FRAME (f)); + /* If cursor was outside the new size, mark it as off. */ mark_window_cursors_off (XWINDOW (FRAME_ROOT_WINDOW (f))); @@ -29397,6 +29430,9 @@ x_make_frame_invisible (struct frame *f) by hand again (they have already done that once for this window.) */ x_wm_set_size_hint (f, 0, true); + if (FRAME_PARENT_FRAME (f)) + x_suspend_background_fills (FRAME_PARENT_FRAME (f)); + #ifdef USE_GTK if (FRAME_GTK_OUTER_WIDGET (f)) gtk_widget_hide (FRAME_GTK_OUTER_WIDGET (f)); @@ -29414,6 +29450,9 @@ x_make_frame_invisible (struct frame *f) error ("Can't notify window manager of window withdrawal"); } + if (FRAME_PARENT_FRAME (f)) + x_restore_background_fills (FRAME_PARENT_FRAME (f)); + /* Don't perform the synchronization if the network connection is slow, and the user says it is unwanted. */ if (NILP (Vx_lax_frame_positioning)) |