X-Git-Url: https://git.donarmstrong.com/?a=blobdiff_plain;f=scm%2Fdisplay-lily.scm;h=9536c3dd42b25b626dd0300b8f7f9a9cf31f80a6;hb=0bb3eb14a16a605ca202dacbf657bdbe5dc94ebf;hp=e85159059df198020dba621b003d713de156040f;hpb=7f3f0083f89d87c5ed0422858e9648fc759e98a4;p=lilypond.git

diff --git a/scm/display-lily.scm b/scm/display-lily.scm
index e85159059d..9536c3dd42 100644
--- a/scm/display-lily.scm
+++ b/scm/display-lily.scm
@@ -2,7 +2,7 @@
 ;;;
 ;;;
 ;;;
-;;; (c) 2005--2008 Nicolas Sceaux  <nicolas.sceaux@free.fr>
+;;; Copyright (C) 2005--2012 Nicolas Sceaux  <nicolas.sceaux@free.fr>
 ;;;
 
 ;;; - This file defines the procedures used to define display methods for each
@@ -28,9 +28,7 @@
   #:use-module (srfi srfi-1)
   #:use-module (srfi srfi-13)
   #:use-module (srfi srfi-39)
-  #:use-module (lily)
-  #:use-syntax (srfi srfi-39)
-  #:use-syntax (ice-9 optargs))
+  #:use-module (lily))
 
 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
 ;;;
@@ -41,7 +39,7 @@
 (define-macro (define-display-method music-type vars . body)
   "Define a display method for a music type and store it in the
 `display-methods' property of the music type entry found in the
-`music-name-to-property-table' hash table. Print methods previously
+`music-name-to-property-table' hash table.  Print methods previously
 defined for that music type are lost. 
 Syntax: (define-display-method MusicType (expression parser)
 	  ...body...))"
@@ -57,9 +55,9 @@ Syntax: (define-display-method MusicType (expression parser)
      method))
 
 (define-macro (define-extra-display-method music-type vars . body)
-  "Add a display method for a music type. A primary display method
+  "Add a display method for a music type.  A primary display method
 is supposed to have been previously defined with `define-display-method'.
-This new method should return a string or #f. If #f is returned, the next
+This new method should return a string or #f.  If #f is returned, the next
 display method will be called."
   `(let* ((type-props (hashq-ref music-name-to-property-table
 				 ',music-type '()))
@@ -81,8 +79,17 @@ display method will be called."
 		 (format #f "~a\\tag #'~a" (if post-event? "-" "") tag))
 	       (ly:music-property expr 'tags))))
 
+(define* (tweaks->lily-string expr #:optional (post-event? #f))
+  (format #f "~{~a ~}"
+          (map (lambda (tweak)
+                 (format #f "~a\\tweak #'~a #~a"
+                         (if post-event? "-" "")
+                         (car tweak)
+                         (scheme-expr->lily-string (cdr tweak))))
+               (ly:music-property expr 'tweaks))))
+
 (define-public (music->lily-string expr parser)
-  "Print expr, a music expression, in LilyPond syntax"
+  "Print @var{expr}, a music expression, in LilyPond syntax."
   (if (ly:music? expr)
       (let* ((music-type (ly:music-property expr 'name))
 	     (procs (assoc-ref (hashq-ref music-name-to-property-table
@@ -92,8 +99,9 @@ display method will be called."
 					      (proc expr parser))
 					    procs))))
 	(if result-string
-	    (format #f "~a~a" 
-		    (tag->lily-string expr (post-event? expr))
+	    (format #f "~a~a~a"
+                    (tag->lily-string expr (post-event? expr))
+                    (tweaks->lily-string expr (post-event? expr))
 		    result-string)
 	    (format #f "%{ Print method not implemented for music type ~a %}"
 		    music-type)))
@@ -230,7 +238,7 @@ Generate binding forms by looking for ?var symbol in pattern."
 			elements-list))))
 
 (define-macro (with-music-match music-expr+pattern . body)
-  "If `music-expr' matches `pattern', call `body'. `pattern' should look like:
+  "If `music-expr' matches `pattern', call `body'.  `pattern' should look like:
   '(music <MusicType>
      property value
      property ?var1
@@ -243,8 +251,8 @@ pattern (the name property being the <MusicType> symbol after the `music'
 keyword), then all music expression found in its properties (such as 'element
 or 'elements).
 When ?var is found instead of a property value, ?var is bound that property value,
-as read inside `music-expr'. ?var may also be used to refere to a whole music 
-expression inside an elements list for instance. These bindings are accessible 
+as read inside `music-expr'.  ?var may also be used to refere to a whole music 
+expression inside an elements list for instance.  These bindings are accessible 
 inside body."
   (let ((music-expr (first music-expr+pattern))
 	(pattern (second music-expr+pattern))
@@ -289,11 +297,14 @@ inside body."
 ;;;
 
 (define (make-music-type-predicate . music-types)
-  (define ((make-music-type-predicate-aux mtypes) expr)
-    (if (null? mtypes)
-	#f
-	(or (eqv? (car mtypes) (ly:music-property expr 'name))
-	    ((make-music-type-predicate-aux (cdr mtypes)) expr))))
-  (make-music-type-predicate-aux music-types))
-
-(load "define-music-display-methods.scm")
\ No newline at end of file
+  (define make-music-type-predicate-aux
+    (lambda (mtypes)
+      (lambda (expr)
+	(if (null? mtypes)
+	    #f
+	    (or (eqv? (car mtypes) (ly:music-property expr 'name))
+		((make-music-type-predicate-aux (cdr mtypes)) expr))))))
+      (make-music-type-predicate-aux music-types))
+
+(ly:load "define-music-display-methods.scm")
+