diff options
Diffstat (limited to 'scripts/theme-studio/build-theme.el')
| -rw-r--r-- | scripts/theme-studio/build-theme.el | 144 |
1 files changed, 84 insertions, 60 deletions
diff --git a/scripts/theme-studio/build-theme.el b/scripts/theme-studio/build-theme.el index ebfc2eb5c..e0a86f111 100644 --- a/scripts/theme-studio/build-theme.el +++ b/scripts/theme-studio/build-theme.el @@ -71,6 +71,17 @@ independently is not possible without clobbering types.") "Non-nil when S is a \"#rrggbb\" hex color string." (and (stringp s) (string-match-p "\\`#[0-9a-fA-F]\\{6\\}\\'" s))) +(defun build-theme/--obj-get (obj key) + "Value of KEY in alist OBJ, or nil." + (cdr (assq key obj))) + +(defun build-theme/--inherit-symbol (value) + "Coerce an inherit VALUE (a face-name string, symbol, or nil) to a symbol." + (cond ((null value) nil) + ((symbolp value) value) + ((stringp value) (intern value)) + (t nil))) + (defun build-theme/--box (box) "Convert a box spec alist (style/color/width) to an Emacs `:box' value, or nil. STYLE is \"line\", \"released\", or \"pressed\"; WIDTH defaults to 1; COLOR (a hex @@ -88,23 +99,72 @@ unset." (list :line-width width))) (t nil))))) -(defun build-theme/--attrs (inherit fg bg bold italic underline strike height &optional box) - "Build a face-attribute plist from the given fields, in canonical order. -INHERIT is a face symbol or nil. FG and BG are hex strings or nil. BOLD, -ITALIC, UNDERLINE, and STRIKE are booleans. HEIGHT is a float multiplier; 1.0 -(or nil) is omitted as the default. BOX is a box spec alist or nil. Only set -attributes are written, so a fully-nil face yields an empty plist." - (let ((plist nil) (bx (build-theme/--box box))) - (when bx (setq plist (list :box bx))) - (when (and height (numberp height) (/= height 1.0)) - (setq plist (append (list :height height) plist))) - (when strike (setq plist (append (list :strike-through t) plist))) - (when underline (setq plist (append (list :underline t) plist))) - (when italic (setq plist (append (list :slant 'italic) plist))) - (when bold (setq plist (append (list :weight 'bold) plist))) - (when bg (setq plist (append (list :background bg) plist))) - (when fg (setq plist (append (list :foreground fg) plist))) - (when inherit (setq plist (append (list :inherit inherit) plist))) +(defun build-theme/--weight (obj) + "Weight symbol for OBJ: explicit `weight' string, else the legacy `bold' flag." + (let ((w (build-theme/--obj-get obj 'weight))) + (cond ((and (stringp w) (> (length w) 0)) (intern w)) + ((build-theme/--obj-get obj 'bold) 'bold)))) + +(defun build-theme/--slant (obj) + "Slant symbol for OBJ: explicit `slant' string, else the legacy `italic' flag." + (let ((s (build-theme/--obj-get obj 'slant))) + (cond ((and (stringp s) (> (length s) 0)) (intern s)) + ((build-theme/--obj-get obj 'italic) 'italic)))) + +(defun build-theme/--line-attr (val) + "Coerce an overline/strike-through VAL to an Emacs attribute value. +nil and t pass through; a {color: C} alist becomes C, or t when COLOR is unset. +Tolerates the legacy boolean form." + (cond ((null val) nil) + ((eq val t) t) + ((consp val) (or (build-theme/--obj-get val 'color) t)) + (t t))) + +(defun build-theme/--underline (obj) + "Underline attribute value for OBJ. +nil when unset. t is a plain line in the face color. A color or wave style +yields a (:color C :style S) plist. Tolerates the legacy boolean form." + (let ((u (build-theme/--obj-get obj 'underline))) + (cond ((null u) nil) + ((eq u t) t) + ((consp u) + (let* ((color (build-theme/--obj-get u 'color)) + (style (build-theme/--obj-get u 'style)) + (wave (and (stringp style) (not (equal style "line")) (intern style)))) + (cond ((and color wave) (list :color color :style wave)) + (color (list :color color)) + (wave (list :style wave)) + (t t)))) + (t t)))) + +(defun build-theme/--attrs (obj) + "Build a face-attribute plist from face-spec alist OBJ, in canonical order. +Reads the full attribute model -- inherit, family, fg/bg, distant-foreground, +weight, slant, height, underline, overline, strike-through, box, inverse-video, +extend -- and tolerates the older boolean bold/italic/underline/strike fields. +Only attributes that are set appear, so a blank face yields nil." + (let* ((height (build-theme/--obj-get obj 'height)) + (family (build-theme/--obj-get obj 'family)) + (pairs + (list + (cons :inherit (build-theme/--inherit-symbol (build-theme/--obj-get obj 'inherit))) + (cons :family (and (stringp family) (> (length family) 0) family)) + (cons :foreground (build-theme/--obj-get obj 'fg)) + (cons :background (build-theme/--obj-get obj 'bg)) + (cons :distant-foreground (build-theme/--obj-get obj 'distant-fg)) + (cons :weight (build-theme/--weight obj)) + (cons :slant (build-theme/--slant obj)) + (cons :height (and (numberp height) (/= height 1.0) height)) + (cons :underline (build-theme/--underline obj)) + (cons :overline (build-theme/--line-attr (build-theme/--obj-get obj 'overline))) + (cons :strike-through (build-theme/--line-attr (build-theme/--obj-get obj 'strike))) + (cons :box (build-theme/--box (build-theme/--obj-get obj 'box))) + (cons :inverse-video (and (build-theme/--obj-get obj 'inverse) t)) + (cons :extend (and (build-theme/--obj-get obj 'extend) t)))) + (plist nil)) + (dolist (pair pairs) + (when (cdr pair) + (setq plist (nconc plist (list (car pair) (cdr pair)))))) plist)) (defun build-theme/--face-spec (face attrs) @@ -113,17 +173,6 @@ Return nil when ATTRS is empty, so cleared faces emit nothing." (when attrs (list face (list (list t attrs))))) -(defun build-theme/--obj-get (obj key) - "Value of KEY in alist OBJ, or nil." - (cdr (assq key obj))) - -(defun build-theme/--inherit-symbol (value) - "Coerce an inherit VALUE (a face-name string, symbol, or nil) to a symbol." - (cond ((null value) nil) - ((symbolp value) value) - ((stringp value) (intern value)) - (t nil))) - ;;; --------------------------------------------------------------------------- ;;; Tiers @@ -131,7 +180,7 @@ Return nil when ATTRS is empty, so cleared faces emit nothing." "Build the `default' face spec from SYNTAX bg / p entries." (let ((bg (build-theme/--obj-get (build-theme/--obj-get syntax 'bg) 'fg)) (fg (build-theme/--obj-get (build-theme/--obj-get syntax 'p) 'fg))) - (build-theme/--face-spec 'default (build-theme/--attrs nil fg bg nil nil nil nil nil)))) + (build-theme/--face-spec 'default (build-theme/--attrs (list (cons 'fg fg) (cons 'bg bg)))))) (defun build-theme/--syntax-face-specs (syntax) "Build syntax-tier face specs from SYNTAX. @@ -143,35 +192,19 @@ Each category fans out to the font-lock faces in (faces (cdr pair)) (obj (build-theme/--obj-get syntax cat))) (when obj - (let ((attrs (build-theme/--attrs nil - (build-theme/--obj-get obj 'fg) - (build-theme/--obj-get obj 'bg) - (build-theme/--obj-get obj 'bold) - (build-theme/--obj-get obj 'italic) - (build-theme/--obj-get obj 'underline) - (build-theme/--obj-get obj 'strike) - nil - (build-theme/--obj-get obj 'box)))) + (let ((attrs (build-theme/--attrs obj))) (dolist (face faces) (when-let ((spec (build-theme/--face-spec face attrs))) (push spec specs))))))) (nreverse specs))) (defun build-theme/--ui-face-specs (ui) - "Build UI-tier face specs from the UI alist (face -> {fg,bg,bold,italic})." + "Build UI-tier face specs from the UI alist (face -> attribute alist)." (let (specs) (dolist (entry ui) (let* ((face (car entry)) (obj (cdr entry)) - (attrs (build-theme/--attrs nil - (build-theme/--obj-get obj 'fg) - (build-theme/--obj-get obj 'bg) - (build-theme/--obj-get obj 'bold) - (build-theme/--obj-get obj 'italic) - (build-theme/--obj-get obj 'underline) - (build-theme/--obj-get obj 'strike) - nil - (build-theme/--obj-get obj 'box)))) + (attrs (build-theme/--attrs obj))) (when-let ((spec (build-theme/--face-spec face attrs))) (push spec specs)))) (nreverse specs))) @@ -183,16 +216,7 @@ Each category fans out to the font-lock faces in (dolist (entry (cdr app)) (let* ((face (car entry)) (obj (cdr entry)) - (attrs (build-theme/--attrs - (build-theme/--inherit-symbol (build-theme/--obj-get obj 'inherit)) - (build-theme/--obj-get obj 'fg) - (build-theme/--obj-get obj 'bg) - (build-theme/--obj-get obj 'bold) - (build-theme/--obj-get obj 'italic) - (build-theme/--obj-get obj 'underline) - (build-theme/--obj-get obj 'strike) - (build-theme/--obj-get obj 'height) - (build-theme/--obj-get obj 'box)))) + (attrs (build-theme/--attrs obj))) (when-let ((spec (build-theme/--face-spec face attrs))) (push spec specs))))) (nreverse specs))) @@ -248,8 +272,8 @@ Signal a `file-missing' error when JSON-FILE does not exist." "Convert JSON-FILE (a theme.json export) into a deftheme file. Write themes/<name>-theme.el, where <name> is JSON-FILE's basename, into OUT-DIR (default: the themes/ directory of this repo). The basename names the -theme so each export lands under its own file (sterling.json -> sterling-theme.el), -rather than colliding on whatever the JSON's internal name field happens to be. +theme so each export lands under its own file (sterling.json becomes +sterling-theme.el), not the name field inside the JSON. Return the written path." (let* ((data (build-theme/--parse json-file)) (name (file-name-base json-file)) |