// move the incoming window so that it is directly adjacent to the target's edge
func AdjoinEdge(target, incoming *xwindow.Window, dir wm.Direction) error {
t, err := target.DecorGeometry()
if err != nil {
return err
}
i, err := incoming.DecorGeometry()
if err != nil {
return err
}
delta := EdgePos(t, dir) - EdgePos(i, dir.Opposite())
if dir == wm.Left || dir == wm.Right {
return wm.Move(incoming, delta+i.X(), i.Y())
} else {
return wm.Move(incoming, i.X(), delta+i.Y())
}
return nil
}
// resize a window by a certain number of pixels in a given direction.
// This function tries to prevent the window from moving
func ResizeDirection(X *xgbutil.XUtil, win *xwindow.Window, dir wm.Direction, px int) error {
// we resize around the decor_geometry of the window
if px == 0 {
// no need to resize
return nil
}
geom, err := win.Geometry()
if err != nil {
return fmt.Errorf("Resize: coudn't get normal geometry: %v", err)
}
w, h := geom.Width(), geom.Height()
log.Printf("ResizeDirection: pre_geom == %v\n", geom)
if dir == wm.Left || dir == wm.Right {
// horizontal resize
w += px
} else {
h += px
}
// two-step resize -> move process, to compensate for WM peculiarities and window sizing hints
// first save the initial position info
pre_decor, err := win.DecorGeometry()
if err != nil {
return fmt.Errorf("Resize: coudn't get decorated geometry: %v", err)
}
// resize the window
err = win.WMResize(w, h)
if err != nil {
return err
}
// wait for the geometry to change
// we use a goroutine to query X a bunch while waiting for the window
// to finish resizing
err = wm.PollFor(win, wm.DecorDiffers(pre_decor), wm.GeometryDiffers(geom))
if err != nil {
return fmt.Errorf("ResizeDirection: error waiting for window geometries to change: %v", err)
}
post_decor, post_geom, err := wm.Geometries(win)
if err != nil {
return err
}
log.Printf("ResizeDirection: post_decor == %v\n", post_decor)
log.Printf("ResizeDirection: post_geom == %v\n", post_geom)
// the opposite edge should stay in the same place
op := dir.Opposite()
pre_edge := EdgePos(pre_decor, op)
post_edge := EdgePos(post_decor, op)
delta := post_edge - pre_edge
x, y := post_decor.X(), post_decor.Y()
// move the window upwards by our height resize so that the bottom edge stays in the same place
if dir == wm.Top || dir == wm.Bottom {
y -= delta
}
// move the window right by our resize so that the right stays in the same place
if dir == wm.Left || dir == wm.Right {
x -= delta
}
// move to lock opposite edge
return wm.Move(win, x, y)
}