Golang Window.DecorGeometry方法代码示例

// cutting windows in half on the Y axis
func splitHorizontal(target, incoming *xwindow.Window, incomingOnLeft bool) error {
	bounds, err := target.DecorGeometry()
	if err != nil {
		log.Printf("splitHorizontal: error getting bounds of target: %v\n", err)
		return err
	}

	left_width := bounds.Width() / 2
	right_width := bounds.Width() - left_width

	var left, right *xwindow.Window
	if incomingOnLeft {
		left = incoming
		right = target
	} else {
		left = target
		right = incoming
	}

	err = MoveResize(right, bounds.X()+left_width, bounds.Y(), right_width, bounds.Height())
	if err != nil {
		log.Printf("splitHorizontal: error configuring right: %v\n", err)
		return err
	}

	err = MoveResize(left, bounds.X(), bounds.Y(), left_width, bounds.Height())
	if err != nil {
		log.Printf("splitHorizontal: error configuring left: %v\n", err)
		return err
	}

	// cool
	return nil
}

// Swap the position and size of the target and incoming windows
func Swap(target, incoming *xwindow.Window) error {
	// get bounds for both windows
	target_bounds, err := target.DecorGeometry()
	if err != nil {
		log.Printf("Swap: error getting bounds of target: %v\n", err)
		return err
	}
	incoming_bounds, err := incoming.DecorGeometry()
	if err != nil {
		log.Printf("Swap: error getting bounds of incoming: %v\n", err)
		return err
	}

	// configure windows, easy as pie!
	err = MoveResize(target, incoming_bounds.X(), incoming_bounds.Y(),
		incoming_bounds.Width(), incoming_bounds.Height())
	if err != nil {
		log.Printf("Swap: error configuring target: %v\n", err)
		return err
	}
	err = MoveResize(incoming, target_bounds.X(), target_bounds.Y(),
		target_bounds.Width(), target_bounds.Height())
	if err != nil {
		log.Printf("Swap: error configuring incoming: %v\n", err)
		return err
	}

	// cool
	return nil
}

func Geometries(win *xwindow.Window) (xrect.Rect, xrect.Rect, error) {
	decor, err := win.DecorGeometry()
	if err != nil {
		return nil, nil, err
	}
	base, err := win.Geometry()
	if err != nil {
		return nil, nil, err
	}
	return decor, base, nil
}

// Put the incoming window on the `dir` side of the target,
// and transform the orthagonal dimension (eg, if `dir` is Up, then dim is `Width`
// to be the same as the target's dimension
// TODO: clip windows to display boundry
func Shove(target, incoming *xwindow.Window, dir Direction) error {
	// get geometries
	i, err := incoming.DecorGeometry()
	if err != nil {
		return err
	}

	t, err := target.DecorGeometry()
	if err != nil {
		return err
	}

	// move in the correct direction
	if dir == Top {
		err := MoveResize(incoming, t.X(), t.Y()-i.Height(), t.Width(), i.Height())
		if err != nil {
			return err
		}
	}

	if dir == Bottom {
		err := MoveResize(incoming, t.X(), t.Y()+t.Height(), t.Width(), i.Height())
		if err != nil {
			return err
		}
	}

	if dir == Left {
		err := MoveResize(incoming, t.X()-i.Width(), t.Y(), i.Width(), t.Height())
		if err != nil {
			return err
		}
	}

	if dir == Right {
		err := MoveResize(incoming, t.X()+t.Width(), t.Y(), i.Width(), t.Height())
		if err != nil {
			return err
		}
	}

	return nil
}

// 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
}

func splitVertical(target, incoming *xwindow.Window, incomingOnTop bool) error {
	bounds, err := target.DecorGeometry()
	if err != nil {
		log.Printf("splitVertical: error getting bounds of target: %v\n", err)
		return err
	}

	bottom_height := bounds.Height() / 2
	top_height := bounds.Height() - bottom_height

	var top, bottom *xwindow.Window
	if incomingOnTop {
		top = incoming
		bottom = target
	} else {
		top = target
		bottom = incoming
	}

	// target goes on bottom...
	err = MoveResize(bottom, bounds.X(), bounds.Y()+top_height, bounds.Width(), bottom_height)
	if err != nil {
		log.Printf("splitVertical: error configuring bottom: %v\n", err)
		return err
	}

	// and incoming on top
	err = MoveResize(top, bounds.X(), bounds.Y(), bounds.Width(), top_height)
	if err != nil {
		log.Printf("splitVertical: error configuring top: %v\n", err)
		return err
	}

	// cool
	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)
}