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bug#20508: 24.4; image map properties not working as described
From: |
Eli Zaretskii |
Subject: |
bug#20508: 24.4; image map properties not working as described |
Date: |
Tue, 05 May 2015 19:32:01 +0300 |
> From: pma <pma@rdorte.org>
> Date: Tue, 05 May 2015 11:28:26 +0200
>
>
> - emacs -Q
> - insert this function:
> (defun image-wipe-and-insert ()
> (interactive)
> (let ()
> (with-current-buffer (get-buffer-create "*an image area test buffer*")
> (switch-to-buffer (current-buffer))
> (erase-buffer)
> (insert-image (find-image '((:type png :file
> "/usr/share/emacs/24.4/etc/images/icons/hicolor/128x128/apps/emacs.png"
> :map '((rect . ((0 . 0) . (50 . 50))) anAreaID
> (:pointer hourglass :help-echo "You found an area!"))
> ;; :relief -20
> ;; :conversion laplace
> :margin (0 . 0)
> :pointer arrow)))))))
>
> - M-x image-wipe-and-insert
> - Point mouse into top left corner
> - results:
> - change of pointer, but not to hourglass;
> - no help-echo message.
It's a cockpit error: you should use 'pointer', not ':pointer' in the
first instance. IOW, this works for me (note the underlined part):
(defun image-wipe-and-insert ()
(interactive)
(let ()
(with-current-buffer (get-buffer-create "*an image area test buffer*")
(switch-to-buffer (current-buffer))
(erase-buffer)
(insert-image (find-image '((:type png :file
"/usr/share/emacs/24.4/etc/images/icons/hicolor/128x128/apps/emacs.png"
:map '((rect . ((0 . 0) . (50 . 50))) anAreaID (pointer
hourglass :help-echo "You found an area!"))
;; ^^^^^^^
;; :relief -20
;; :conversion laplace
:margin (0 . 0)
:pointer arrow)))))))
(Yes, it's confusing to have ':pointer' on the top level and 'pointer'
inside the value for ':map'. But the manual correctly says 'pointer'
in the latter case, so at least the documentation is consistent with
the code.)