New feature: set optimal slice from BoundingBox information.

* doc-view.el (doc-view-mode-map): Add keybinding.
(doc-view-menu): Add menu entry.
(doc-view-set-slice): Adapt docstring.
(doc-view-get-bounding-box, doc-view-guess-paper-size)
(doc-view-scale-bounding-box)
(doc-view-set-slice-from-bounding-box): New functions.
(doc-view-paper-sizes): New defvar.

* doc/emacs/misc.texi (DocView Slicing): Document new slice from
BoundingBox feature.

1 files changed, 4 insertions, 0 deletions

diff --git a/doc/emacs/misc.texi b/doc/emacs/misc.texi
index 90072d19a69..5d7a51a01f5 100644
--- a/doc/emacs/misc.texi
+++ b/doc/emacs/misc.texi
@@ -411,6 +411,10 @@ m} (@code{doc-view-set-slice-using-mouse}), where you use the mouse to
 select the slice.
 @c ??? How does this work?
 
+  The most convenient way is to set the optimal slice by using
+BoundingBox information automatically determined from the document by
+typing @kbd{s b} (@code{doc-view-set-slice-using-mouse}).
+
 @findex doc-view-reset-slice
   To cancel the selected slice, type @kbd{s r}
 (@code{doc-view-reset-slice}).  Then DocView shows the entire page