Re: How to have a frame dedicated to buffers of a certain kind? (was: use pdf-tools in Emacs.)

[Hongyi Zhao]

On Sun, Apr 30, 2023 at 8:42 AM Hongyi Zhao <hongyi.zhao@gmail.com> wrote:
>
> On Sun, Apr 30, 2023 at 4:08 AM Tassilo Horn <tsdh@gnu.org> wrote:
> >
> > Hongyi Zhao <hongyi.zhao@gmail.com> writes:
> >
> > > And this time the 3rd circle numbered window will be used to display
> > > the LaTeX code and PDF alternately when I do the forward and backward
> > > searching. This is not the result we hope to see.
> >
> > Here's a slightly improved version:
> >
> > (defun th/display-buffer-in-my-pdf-frame (buffer alist)
> >   (if-let ((frame (car (seq-filter
> >                         (lambda (f) (frame-parameter f 'th/pdf-frame))
> >                         (frame-list)))))
> >       (display-buffer-use-some-frame
> >        buffer `((frame-predicate . ,(lambda (f)
> >                                       (frame-parameter f 'th/pdf-frame)))))
> >     (display-buffer-pop-up-frame
> >      buffer (cons
> >              '(pop-up-frame-parameters (th/pdf-frame . t))
> >              alist))))
> >
> > ;; PDFs in a dedicated pdf frame.
> > (add-to-list 'display-buffer-alist
> >              `((derived-mode . pdf-view-mode)
> >                th/display-buffer-in-my-pdf-frame))
> >
> > The problem remains that when double-clicking in the pdf-view-mode
> > buffer to jump to the corresponding position in the tex file, the tex
> > file buffer appears in a new window of the pdf frame.  The issue is that
> > pdf-tools uses pop-to-buffer here:
> >
> > (defun pdf-sync-backward-search (x y)
> >   "Go to the source corresponding to image coordinates X, Y.
> >
> > Try to find the exact position, if
> > `pdf-sync-backward-use-heuristic' is non-nil."
> >   (cl-destructuring-bind (source finder)
> >       (pdf-sync-backward-correlate x y)
> >     (pop-to-buffer (or (find-buffer-visiting source)
> >                        (find-file-noselect source))
> >                    pdf-sync-backward-display-action)
> >     (push-mark)
> >     (funcall finder)
> >     (run-hooks 'pdf-sync-backward-hook)))
> >
> > But there you go!  You can define a pdf-sync-backward-display-action to
> > make it work.
> >
> > (setq pdf-sync-backward-display-action
> >       '(display-buffer-reuse-window (reusable-frames . t)))
>
> Thank you for your wonderful tricks/tips/codes once more. This time,
> it can work perfectly according to the intention discussed here using
> the following configuration:

But I found a further problem: If I first opened the PDF file, then it
still won't be able to create a new frame dedicated to buffers of
LaTeX code, as shown in the attached screenshot.

Regards,
Zhao

> (use-package pdf-tools
>   :ensure t
>   :init
>   (pdf-tools-install)
>
>   (setq pdf-sync-backward-display-action
>     '(display-buffer-reuse-window (reusable-frames . t)))
>   (defun th/display-buffer-in-my-pdf-frame (buffer alist)
>     (if-let ((frame (car (seq-filter
>                           (lambda (f) (frame-parameter f 'th/pdf-frame))
>                           (frame-list)))))
>     (display-buffer-use-some-frame
>      buffer `((frame-predicate . ,(lambda (f)
>                     (frame-parameter f 'th/pdf-frame)))))
>       (display-buffer-pop-up-frame
>        buffer (cons
>                '(pop-up-frame-parameters (th/pdf-frame . t))
>                alist))))
>
>   ;; PDFs in a dedicated pdf frame.
>   (add-to-list 'display-buffer-alist
>                `((derived-mode . pdf-view-mode)
>          th/display-buffer-in-my-pdf-frame))
>   )
>
> > You can read up how that all works in (info "(elisp) Displaying
> > Buffers").
>
> Thank you for hints. But the Elisp code you mentioned requires a
> significant level of proficiency in Elisp programming. Even if I
> understand the underlying mechanics of the problem being discussed, it
> may still be challenging to write the corresponding code
> implementation without a strong foundation in Elisp.
>
> > Bye,
> > Tassilo
>
> Best,
> Zhao

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