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bug#57639: [PATCH] Add new command 'toggle-theme'
From: |
Philip Kaludercic |
Subject: |
bug#57639: [PATCH] Add new command 'toggle-theme' |
Date: |
Mon, 10 Oct 2022 11:02:37 +0000 |
Lars Ingebrigtsen <larsi@gnus.org> writes:
> Philip Kaludercic <philipk@posteo.net> writes:
>
>> The last issue preventing this patch from being merged is that
>> expressions marked for auto-loading are not gathered. I believe one
>> option was adding etc/themes to the list of scraped directories, but
>> that would require comments like
>>
>> ;;;###autoload
>> (when (and (boundp 'custom-theme-load-path)
>> load-file-name)
>> ;; Add theme folder to `custom-theme-load-path' when installing over MELPA.
>> (add-to-list 'custom-theme-load-path
>> (file-name-as-directory (file-name-directory
>> load-file-name))))
>>
>> from leuven-theme.el to be removed.
>
> Ah, right.
>
> Well, we could come up with a special rule for etc/themes. For
> instance, we could use
>
> ;;;###theme-autoload (put ...)
>
> for these things, and add a function to loaddefs-gen that only fetched
> those for the Emacs build (it'd almost be trivial -- we just bind
> lisp-mode-autoload-regexp to ";;;###theme-autoload" and then point the
> scraping function at etc/themes).
I am not sure how that is done exactly, but if we take the
";;;###theme-autoload" approach it should be able to have a handler to
convert autoloaded (defcustom ...) forms in to (put ...) ones:
>From 36505800b5a0c8d7b4af5ceb54483cfdfdbf6925 Mon Sep 17 00:00:00 2001
From: Philip Kaludercic <philipk@posteo.net>
Date: Sat, 17 Sep 2022 20:11:42 +0200
Subject: [PATCH] Tag themes with properties
* doc/emacs/custom.texi (Custom Themes): Document 'theme-choose-variant'.
* doc/lispref/customize.texi (Custom Themes): Document the new
optional argument to 'deftheme'.
* etc/themes/adwaita-theme.el (adwaita): Add properties.
* etc/themes/deeper-blue-theme.el (deeper-blue): Add properties.
* etc/themes/dichromacy-theme.el (dichromacy): Add properties.
* etc/themes/light-blue-theme.el (light-blue): Add properties.
* etc/themes/manoj-dark-theme.el (manoj-dark): Add properties.
* etc/themes/misterioso-theme.el (misterioso): Add properties.
* etc/themes/tango-dark-theme.el (tango-dark): Add properties.
* etc/themes/tango-theme.el (tango): Add properties.
* etc/themes/tsdh-dark-theme.el (tsdh-dark): Add properties.
* etc/themes/tsdh-light-theme.el (tsdh-light): Add properties.
* etc/themes/wheatgrass-theme.el (wheatgrass): Add properties.
* etc/themes/whiteboard-theme.el (whiteboard): Add properties.
* etc/themes/wombat-theme.el (wombat): Add properties.
* lisp/custom.el (deftheme): Allow for optional arguments to set the
property list.
(custom-declare-theme): Accept the same optional arguments as 'deftheme'.
(theme-list-variants): Add new function.
(theme-choose-variant): Add new command for switching between members
of a theme family.
(toggle-theme): Add an alias for 'theme-choose-variant'. (Bug#57639)
* lisp/emacs-lisp/loaddefs-gen.el (loaddefs-generate--make-autoload):
Handle 'defcustom's by extracting the properties.
---
doc/emacs/custom.texi | 10 +++++
doc/lispref/customize.texi | 5 ++-
etc/themes/adwaita-theme.el | 5 ++-
etc/themes/deeper-blue-theme.el | 5 ++-
etc/themes/dichromacy-theme.el | 5 ++-
etc/themes/leuven-dark-theme.el | 8 +++-
etc/themes/leuven-theme.el | 8 +++-
etc/themes/light-blue-theme.el | 5 ++-
etc/themes/manoj-dark-theme.el | 5 ++-
etc/themes/misterioso-theme.el | 5 ++-
etc/themes/tango-dark-theme.el | 7 +++-
etc/themes/tango-theme.el | 6 ++-
etc/themes/tsdh-dark-theme.el | 6 ++-
etc/themes/tsdh-light-theme.el | 6 ++-
etc/themes/wheatgrass-theme.el | 5 ++-
etc/themes/whiteboard-theme.el | 5 ++-
etc/themes/wombat-theme.el | 5 ++-
lisp/custom.el | 70 ++++++++++++++++++++++++++++++---
lisp/emacs-lisp/loaddefs-gen.el | 6 +++
19 files changed, 152 insertions(+), 25 deletions(-)
diff --git a/doc/emacs/custom.texi b/doc/emacs/custom.texi
index ff7ab83190..f98527bf9a 100644
--- a/doc/emacs/custom.texi
+++ b/doc/emacs/custom.texi
@@ -667,6 +667,16 @@ Custom Themes
the @file{*Custom Themes*} buffer; or type @kbd{M-x describe-theme}
anywhere in Emacs and enter the theme name.
+@findex theme-choose-variant
+Some themes have variants (most often just two: light and dark). You
+can switch to another variant using @kbd{M-x theme-choose-variant}.
+If the currently active theme has only one other variant, it will be
+selected; if there are more variants, the command will prompt you
+which one to switch to.
+
+Note that @code{theme-choose-variant} only works if a single theme
+is active.
+
@node Creating Custom Themes
@subsection Creating Custom Themes
@cindex custom themes, creating
diff --git a/doc/lispref/customize.texi b/doc/lispref/customize.texi
index 6ba35cffff..911b6c4d75 100644
--- a/doc/lispref/customize.texi
+++ b/doc/lispref/customize.texi
@@ -1428,12 +1428,13 @@ Custom Themes
be a call to @code{deftheme}, and the last form should be a call to
@code{provide-theme}.
-@defmac deftheme theme &optional doc
+@defmac deftheme theme &optional doc &rest properties
This macro declares @var{theme} (a symbol) as the name of a Custom
theme. The optional argument @var{doc} should be a string describing
the theme; this is the description shown when the user invokes the
@code{describe-theme} command or types @kbd{?} in the @samp{*Custom
-Themes*} buffer.
+Themes*} buffer. The remaining arguments @var{properties} are used
+pass a property list with theme attributes.
Two special theme names are disallowed (using them causes an error):
@code{user} is a dummy theme that stores the user's direct
diff --git a/etc/themes/adwaita-theme.el b/etc/themes/adwaita-theme.el
index ba83a0578c..6ad8405559 100644
--- a/etc/themes/adwaita-theme.el
+++ b/etc/themes/adwaita-theme.el
@@ -21,10 +21,13 @@
;;; Code:
+;;;###theme-autoload
(deftheme adwaita
"Face colors similar to the default theme of Gnome 3 (Adwaita).
The colors are chosen to match Adwaita window decorations and the
-default look of the Gnome 3 desktop.")
+default look of the Gnome 3 desktop."
+ :background-mode 'light
+ :kind 'color-scheme)
(let ((class '((class color) (min-colors 89))))
(custom-theme-set-faces
diff --git a/etc/themes/deeper-blue-theme.el b/etc/themes/deeper-blue-theme.el
index 8f19147f91..48ed9ba061 100644
--- a/etc/themes/deeper-blue-theme.el
+++ b/etc/themes/deeper-blue-theme.el
@@ -21,8 +21,11 @@
;;; Code:
+;;;###theme-autoload
(deftheme deeper-blue
- "Face colors using a deep blue background.")
+ "Face colors using a deep blue background."
+ :background-mode 'dark
+ :kind 'color-scheme)
(let ((class '((class color) (min-colors 89))))
(custom-theme-set-faces
diff --git a/etc/themes/dichromacy-theme.el b/etc/themes/dichromacy-theme.el
index d53c075d92..fe44d520cc 100644
--- a/etc/themes/dichromacy-theme.el
+++ b/etc/themes/dichromacy-theme.el
@@ -21,6 +21,7 @@
;;; Code:
+;;;###theme-autoload
(deftheme dichromacy
"Face colors suitable for red/green color-blind users.
The color palette is from B. Wong, Nature Methods 8, 441 (2011).
@@ -28,7 +29,9 @@ dichromacy
differentiated by individuals with protanopia or deuteranopia.
Basic, Font Lock, Isearch, Gnus, Message, Flyspell, and
-Ansi-Color faces are included.")
+Ansi-Color faces are included."
+ :background-mode 'light
+ :kind 'color-scheme)
(let ((class '((class color) (min-colors 89)))
(orange "#e69f00")
diff --git a/etc/themes/leuven-dark-theme.el b/etc/themes/leuven-dark-theme.el
index 0e162c8bab..08978a2668 100644
--- a/etc/themes/leuven-dark-theme.el
+++ b/etc/themes/leuven-dark-theme.el
@@ -5,7 +5,7 @@
;; Author: Fabrice Niessen <(concat "fniessen" at-sign "pirilampo.org")>
;; Contributor: Thibault Polge <(concat "thibault" at-sign "thb.lt")>
;; URL: https://github.com/fniessen/emacs-leuven-dark-theme
-;; Version: 20220202.1126
+;; Version: 20221010.1208
;; Keywords: color theme
;; This file is part of GNU Emacs.
@@ -93,11 +93,15 @@ leuven-dark-scale-font
;;; Theme Faces.
+;;;###theme-autoload
(deftheme leuven-dark
"Face colors with a light background.
Basic, Font Lock, Isearch, Gnus, Message, Org mode, Diff, Ediff,
Flyspell, Semantic, and Ansi-Color faces are included -- and much
-more...")
+more..."
+ :background-mode 'dark
+ :family 'leuven
+ :kind 'color-scheme)
(let ((class '((class color) (min-colors 89)))
diff --git a/etc/themes/leuven-theme.el b/etc/themes/leuven-theme.el
index d9a8d5391a..e712a79adf 100644
--- a/etc/themes/leuven-theme.el
+++ b/etc/themes/leuven-theme.el
@@ -4,7 +4,7 @@
;; Author: Fabrice Niessen <(concat "fniessen" at-sign "pirilampo.org")>
;; URL: https://github.com/fniessen/emacs-leuven-theme
-;; Version: 20200513.1928
+;; Version: 20221010.1209
;; Keywords: color theme
;; This file is part of GNU Emacs.
@@ -74,11 +74,15 @@ leuven-scale-font
;;; Theme Faces.
+;;;###theme-autoload
(deftheme leuven
"Face colors with a light background.
Basic, Font Lock, Isearch, Gnus, Message, Org mode, Diff, Ediff,
Flyspell, Semantic, and Ansi-Color faces are included -- and much
-more...")
+more..."
+ :background-mode 'light
+ :kind 'color-scheme
+ :family 'leuven)
(let ((class '((class color) (min-colors 89)))
diff --git a/etc/themes/light-blue-theme.el b/etc/themes/light-blue-theme.el
index eeca46210c..808fcbfeb2 100644
--- a/etc/themes/light-blue-theme.el
+++ b/etc/themes/light-blue-theme.el
@@ -26,8 +26,11 @@
;;; Code:
+;;;###theme-autoload
(deftheme light-blue
- "Face colors utilizing a light blue background.")
+ "Face colors utilizing a light blue background."
+ :background-mode 'light
+ :kind 'color-scheme)
(make-obsolete 'light-blue nil "29.1")
diff --git a/etc/themes/manoj-dark-theme.el b/etc/themes/manoj-dark-theme.el
index af5576386c..f9aaa97c25 100644
--- a/etc/themes/manoj-dark-theme.el
+++ b/etc/themes/manoj-dark-theme.el
@@ -64,10 +64,13 @@
;;; Code:
+;;;###theme-autoload
(deftheme manoj-dark
"Very high contrast faces with a black background.
This theme avoids subtle color variations, while avoiding the
-jarring angry fruit salad look to reduce eye fatigue.")
+jarring angry fruit salad look to reduce eye fatigue."
+ :background-mode 'dark
+ :kind 'color-scheme)
(custom-theme-set-faces
'manoj-dark
diff --git a/etc/themes/misterioso-theme.el b/etc/themes/misterioso-theme.el
index 55186384ad..3fd6cdb5af 100644
--- a/etc/themes/misterioso-theme.el
+++ b/etc/themes/misterioso-theme.el
@@ -21,8 +21,11 @@
;;; Code:
+;;;###theme-autoload
(deftheme misterioso
- "Predominantly blue/cyan faces on a dark cyan background.")
+ "Predominantly blue/cyan faces on a dark cyan background."
+ :background-mode 'dark
+ :kind 'color-scheme)
(let ((class '((class color) (min-colors 89))))
diff --git a/etc/themes/tango-dark-theme.el b/etc/themes/tango-dark-theme.el
index ef00d2ac49..85995e4e99 100644
--- a/etc/themes/tango-dark-theme.el
+++ b/etc/themes/tango-dark-theme.el
@@ -27,10 +27,15 @@
;;; Code:
+;;;###theme-autoload
(deftheme tango-dark
"Face colors using the Tango palette (dark background).
Basic, Font Lock, Isearch, Gnus, Message, Ediff, Flyspell,
-Semantic, and Ansi-Color faces are included.")
+Semantic, and Ansi-Color faces are included."
+ :background-mode 'dark
+ :kind 'color-scheme
+ :family 'tango)
+
(let ((class '((class color) (min-colors 89)))
;; Tango palette colors.
diff --git a/etc/themes/tango-theme.el b/etc/themes/tango-theme.el
index ecbbf03753..2ac1b42294 100644
--- a/etc/themes/tango-theme.el
+++ b/etc/themes/tango-theme.el
@@ -27,10 +27,14 @@
;;; Code:
+;;;###theme-autoload
(deftheme tango
"Face colors using the Tango palette (light background).
Basic, Font Lock, Isearch, Gnus, Message, Ediff, Flyspell,
-Semantic, and Ansi-Color faces are included.")
+Semantic, and Ansi-Color faces are included."
+ :background-mode 'light
+ :kind 'color-scheme
+ :family 'tango)
(let ((class '((class color) (min-colors 89)))
;; Tango palette colors.
diff --git a/etc/themes/tsdh-dark-theme.el b/etc/themes/tsdh-dark-theme.el
index a88ad75520..6b1e865e42 100644
--- a/etc/themes/tsdh-dark-theme.el
+++ b/etc/themes/tsdh-dark-theme.el
@@ -19,8 +19,12 @@
;;; Code:
+;;;###theme-autoload
(deftheme tsdh-dark
- "A dark theme used and created by Tassilo Horn.")
+ "A dark theme used and created by Tassilo Horn."
+ :background-mode 'dark
+ :kind 'color-scheme
+ :family 'tsdh)
(custom-theme-set-faces
'tsdh-dark
diff --git a/etc/themes/tsdh-light-theme.el b/etc/themes/tsdh-light-theme.el
index d9d09b702b..ac964d66d6 100644
--- a/etc/themes/tsdh-light-theme.el
+++ b/etc/themes/tsdh-light-theme.el
@@ -19,9 +19,13 @@
;;; Code:
+;;;###theme-autoload
(deftheme tsdh-light
"A light Emacs theme.
-Used and created by Tassilo Horn.")
+Used and created by Tassilo Horn."
+ :background-mode 'light
+ :kind 'color-scheme
+ :family 'tsdh)
(custom-theme-set-faces
'tsdh-light
diff --git a/etc/themes/wheatgrass-theme.el b/etc/themes/wheatgrass-theme.el
index c56c8a2d8a..20e7bbbac2 100644
--- a/etc/themes/wheatgrass-theme.el
+++ b/etc/themes/wheatgrass-theme.el
@@ -19,11 +19,14 @@
;;; Code:
+;;;###theme-autoload
(deftheme wheatgrass
"High-contrast green/blue/brown faces on a black background.
Basic, Font Lock, Isearch, Gnus, and Message faces are included.
The default face foreground is wheat, with other faces in shades
-of green, brown, and blue.")
+of green, brown, and blue."
+ :background-mode 'dark
+ :kind 'color-scheme)
(let ((class '((class color) (min-colors 89))))
(custom-theme-set-faces
diff --git a/etc/themes/whiteboard-theme.el b/etc/themes/whiteboard-theme.el
index f21b18b421..2f86234b32 100644
--- a/etc/themes/whiteboard-theme.el
+++ b/etc/themes/whiteboard-theme.el
@@ -21,8 +21,11 @@
;;; Code:
+;;;###theme-autoload
(deftheme whiteboard
- "Face colors similar to markers on a whiteboard.")
+ "Face colors similar to markers on a whiteboard."
+ :background-mode 'light
+ :kind 'color-scheme)
(let ((class '((class color) (min-colors 89))))
(custom-theme-set-faces
diff --git a/etc/themes/wombat-theme.el b/etc/themes/wombat-theme.el
index d9fab8ac78..9bb026ead1 100644
--- a/etc/themes/wombat-theme.el
+++ b/etc/themes/wombat-theme.el
@@ -21,11 +21,14 @@
;;; Code:
+;;;###theme-autoload
(deftheme wombat
"Medium-contrast faces with a dark gray background.
Adapted, with permission, from a Vim color scheme by Lars H. Nielsen.
Basic, Font Lock, Isearch, Gnus, Message, and Ansi-Color faces
-are included.")
+are included."
+ :background-mode 'dark
+ :kind 'color-scheme)
(let ((class '((class color) (min-colors 89))))
(custom-theme-set-faces
diff --git a/lisp/custom.el b/lisp/custom.el
index 604b1a3ff4..5aecbe6fe5 100644
--- a/lisp/custom.el
+++ b/lisp/custom.el
@@ -1152,9 +1152,11 @@ custom--sort-vars-1
;; (provide-theme 'THEME)
-(defmacro deftheme (theme &optional doc)
+(defmacro deftheme (theme &optional doc &rest properties)
"Declare THEME to be a Custom theme.
The optional argument DOC is a doc string describing the theme.
+PROPERTIES are interpreted as a property list that will be stored
+in the `theme-properties' property for THEME.
Any theme `foo' should be defined in a file called `foo-theme.el';
see `custom-make-theme-feature' for more information."
@@ -1164,18 +1166,25 @@ deftheme
;; It is better not to use backquote in this file,
;; because that makes a bootstrapping problem
;; if you need to recompile all the Lisp files using interpreted code.
- (list 'custom-declare-theme (list 'quote theme) (list 'quote feature)
doc)))
+ (list 'custom-declare-theme (list 'quote theme) (list 'quote feature) doc
+ (cons 'list properties))))
-(defun custom-declare-theme (theme feature &optional doc)
+(defun custom-declare-theme (theme feature &optional doc properties)
"Like `deftheme', but THEME is evaluated as a normal argument.
-FEATURE is the feature this theme provides. Normally, this is a symbol
-created from THEME by `custom-make-theme-feature'."
+FEATURE is the feature this theme provides. Normally, this is a
+symbol created from THEME by `custom-make-theme-feature'. The
+optional argument DOC may contain the documentation for THEME.
+The optional argument PROPERTIES may contain a property list of
+attributes associated with THEME."
(unless (custom-theme-name-valid-p theme)
(error "Custom theme cannot be named %S" theme))
(unless (memq theme custom-known-themes)
(push theme custom-known-themes))
(put theme 'theme-feature feature)
- (when doc (put theme 'theme-documentation doc)))
+ (when doc
+ (put theme 'theme-documentation doc))
+ (when properties
+ (put theme 'theme-properties properties)))
(defun custom-make-theme-feature (theme)
"Given a symbol THEME, create a new symbol by appending \"-theme\".
@@ -1372,6 +1381,55 @@ load-theme
(enable-theme theme))
t)
+(defun theme-list-variants (theme &rest list)
+ "Return a list of theme variants for THEME.
+If the optional argument LIST is not given, "
+ (let* ((properties (get theme 'theme-properties))
+ (family (plist-get properties :family)))
+ (seq-filter
+ (lambda (variant)
+ (and (eq (plist-get (get variant 'theme-properties) :family)
+ family)
+ (not (eq variant theme))))
+ (or list (custom-available-themes)))))
+
+(defun theme-choose-variant (&optional no-confirm no-enable)
+ "Prompt to switch from the current theme to one of its a variants.
+The current theme will be disabled before variant is enabled. If
+the current theme has only one variant, switch to that variant
+without prompting, otherwise prompt for the variant to select.
+See `load-theme' for the meaning of NO-CONFIRM and NO-ENABLE."
+ (interactive)
+ (let ((active-color-schemes
+ (seq-filter
+ (lambda (theme)
+ ;; FIXME: As most themes currently do not have a `:kind'
+ ;; tag, it is assumed that a theme is a color scheme by
+ ;; default. This should be reconsidered in the future.
+ (memq (plist-get (get theme 'theme-properties) :kind)
+ '(color-scheme nil)))
+ custom-enabled-themes)))
+ (cond
+ ((length= active-color-schemes 0)
+ (user-error "No theme is active, cannot toggle"))
+ ((length> active-color-schemes 1)
+ (user-error "More than one theme active, cannot unambiguously toggle")))
+ (let* ((theme (car active-color-schemes))
+ (family (plist-get (get theme 'theme-properties) :family)))
+ (unless family
+ (error "Theme `%s' does not have any known variants" theme))
+ (let* ((variants (theme-list-variants theme))
+ (choice (cond
+ ((null variants)
+ (error "`%s' has no variants" theme))
+ ((length= variants 1)
+ (car variants))
+ ((intern (completing-read "Load custom theme: "
variants))))))
+ (disable-theme theme)
+ (load-theme choice no-confirm no-enable)))))
+
+(defalias 'toggle-theme #'theme-choose-variant)
+
(defun custom-theme-load-confirm (hash)
"Query the user about loading a Custom theme that may not be safe.
The theme should be in the current buffer. If the user agrees,
diff --git a/lisp/emacs-lisp/loaddefs-gen.el b/lisp/emacs-lisp/loaddefs-gen.el
index 964d23c770..e57024aee5 100644
--- a/lisp/emacs-lisp/loaddefs-gen.el
+++ b/lisp/emacs-lisp/loaddefs-gen.el
@@ -283,6 +283,12 @@ loaddefs-generate--make-autoload
,@(when-let ((safe (plist-get props :safe)))
`((put ',varname 'safe-local-variable ,safe))))))
+ ;; Extract theme properties
+ ((eq car 'deftheme)
+ (let* ((name (car-safe (cdr-safe form)))
+ (props (nthcdr 3 form)))
+ `(put ',name 'theme-properties (list ,@props))))
+
((eq car 'defgroup)
;; In Emacs this is normally handled separately by cus-dep.el, but for
;; third party packages, it can be convenient to explicitly autoload
--
2.37.3
- bug#57639: [PATCH] Add new command 'toggle-theme', Philip Kaludercic, 2022/10/09
- bug#57639: [PATCH] Add new command 'toggle-theme', Lars Ingebrigtsen, 2022/10/10
- bug#57639: [PATCH] Add new command 'toggle-theme',
Philip Kaludercic <=
- bug#57639: [PATCH] Add new command 'toggle-theme', Lars Ingebrigtsen, 2022/10/10
- bug#57639: [PATCH] Add new command 'toggle-theme', Philip Kaludercic, 2022/10/11
- bug#57639: [PATCH] Add new command 'toggle-theme', Lars Ingebrigtsen, 2022/10/11
- bug#57639: [PATCH] Add new command 'toggle-theme', Philip Kaludercic, 2022/10/11
- bug#57639: [PATCH] Add new command 'toggle-theme', Lars Ingebrigtsen, 2022/10/11
- bug#57639: [PATCH] Add new command 'toggle-theme', Philip Kaludercic, 2022/10/11
- bug#57639: [PATCH] Add new command 'toggle-theme', Lars Ingebrigtsen, 2022/10/11
- bug#57639: [PATCH] Add new command 'toggle-theme', Philip Kaludercic, 2022/10/13
- bug#57639: [PATCH] Add new command 'toggle-theme', Philip Kaludercic, 2022/10/13
- bug#57639: [PATCH] Add new command 'toggle-theme', Eli Zaretskii, 2022/10/13