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Re: Could x-show-tip be reimplemented in Elisp? How does one create bord
From: |
Chris Feng |
Subject: |
Re: Could x-show-tip be reimplemented in Elisp? How does one create borderless frames from Elisp? |
Date: |
Sat, 13 Feb 2016 10:15:52 +0800 |
> TL;DR: How do I create a frame without a border, in the style of
> x_create_tip_frame (called by x-show-tip in the C sources), from Elisp?
>
> I'm looking at ways in which we could use real tooptip popups instead of
> overlays to display company-mode completion lists. This would have many
> advantages, including better interaction with font sizes, no issues with
> recursive display specs, good support for variable-width fonts, and so on. I
> believe Stefan has spoken in favour of that approach in the past, too.
>
> The natural candidate for this task is x-show-tip, and it probably meets most
> of the requirements; but not all. In particular, there can be at most one
> tooltip displayed at any time; this means that we'd break other packages that
> display tooltips while completion is ongoing. Examples include
> company-quickhelp, which displays documentation for the currently selected
> entry next to completion candidates.
>
> `x-show-tip` is currently implemented in C; as far as I can see, however, it
> essentially creates a frame and displays it at a given location; given this,
> I thought it would be possible to reimplement it in ELisp. Unfortunately,
> I've been hitting a wall when it comes to displaying a borderless frame. I
> asked on
> https://emacs.stackexchange.com/questions/20167/how-do-i-create-a-borderless-frame,
> to no avail.
>
> My original guess was that the relevant part of the C code was this call:
>
> x_default_parameter (f, parms, Qborder_width, make_number (0),
> "borderWidth", "BorderWidth", RES_TYPE_NUMBER);
>
> Unfortunately, neither (set-frame-param (selected-frame) 'border-width 0) nor
> (make-frame '((border-width . 0))) (both inspired from the call above) yield
> a borderless frame.
I think the relevant part in 'x_create_tip_frame' is actually:
attrs.override_redirect = True;
What you want to do is to remove the decoration added by the window
manager. So you need to set the override-redirect flag on that X
window.
> Is there a way to create a borderless frame from Elisp?
You may have a look at XELB (available on ELPA). The following code
should create a frame without decoration.
(require 'xcb)
(setq frame (make-frame '((visibility . nil))))
(let ((window (string-to-number (frame-parameter frame 'outer-window-id)))
(connection (xcb:connect-to-socket)))
(xcb:+request connection
(make-instance 'xcb:ChangeWindowAttributes
:window window
:value-mask xcb:CW:OverrideRedirect
:override-redirect 1))
(xcb:flush connection)
(xcb:disconnect connection))
(make-frame-visible frame)
- Could x-show-tip be reimplemented in Elisp? How does one create borderless frames from Elisp?, Clément Pit--Claudel, 2016/02/12
- Re: Could x-show-tip be reimplemented in Elisp? How does one create borderless frames from Elisp?,
Chris Feng <=
- Re: Could x-show-tip be reimplemented in Elisp? How does one create borderless frames from Elisp?, Clément Pit--Claudel, 2016/02/12
- Re: Could x-show-tip be reimplemented in Elisp? How does one create borderless frames from Elisp?, Chris Feng, 2016/02/12
- Creating a "borderless" frame (without WM chrome) (was Re: Could x-show-tip be reimplemented in Elisp? How does one create borderless frames from Elisp?), Clément Pit--Claudel, 2016/02/16
- Re: Creating a "borderless" frame (without WM chrome) (was Re: Could x-show-tip be reimplemented in Elisp? How does one create borderless frames from Elisp?), Chris Feng, 2016/02/16
- Re: Creating a "borderless" frame (without WM chrome) (was Re: Could x-show-tip be reimplemented in Elisp? How does one create borderless frames from Elisp?), Clément Pit--Claudel, 2016/02/16
- Re: Creating a "borderless" frame (without WM chrome) (was Re: Could x-show-tip be reimplemented in Elisp? How does one create borderless frames from Elisp?), Chris Feng, 2016/02/16
- Re: Creating a "borderless" frame (without WM chrome) (was Re: Could x-show-tip be reimplemented in Elisp? How does one create borderless frames from Elisp?), Clément Pit--Claudel, 2016/02/16
- Re: Creating a "borderless" frame (without WM chrome) (was Re: Could x-show-tip be reimplemented in Elisp? How does one create borderless frames from Elisp?), martin rudalics, 2016/02/17
- Re: Creating a "borderless" frame (without WM chrome) (was Re: Could x-show-tip be reimplemented in Elisp? How does one create borderless frames from Elisp?), Chris Feng, 2016/02/17
- Re: Creating a "borderless" frame (without WM chrome) (was Re: Could x-show-tip be reimplemented in Elisp? How does one create borderless frames from Elisp?), Clément Pit--Claudel, 2016/02/17