X-Git-Url: https://git.donarmstrong.com/?a=blobdiff_plain;f=scm%2Fstencil.scm;h=c0e56cd86e8d4613ab63d34856430aec6307962f;hb=5c14a087ca6cbd665fd631452b7b1283ba0387c3;hp=fdbefd1f0ff04e9abe6f83a4b30e3d2fe13281f0;hpb=6052adfdab868601aab5c2847f7d4476d57dbc12;p=lilypond.git

diff --git a/scm/stencil.scm b/scm/stencil.scm
index fdbefd1f0f..c0e56cd86e 100644
--- a/scm/stencil.scm
+++ b/scm/stencil.scm
@@ -2,7 +2,7 @@
 ;;;;
 ;;;;  source file of the GNU LilyPond music typesetter
 ;;;; 
-;;;; (c) 2003--2006 Han-Wen Nienhuys <hanwen@cs.uu.nl>
+;;;; (c) 2003--2007 Han-Wen Nienhuys <hanwen@xs4all.nl>
 
 (define-public (stack-stencils axis dir padding stils)
   "Stack stencils STILS in direction AXIS, DIR, using PADDING."
@@ -30,14 +30,33 @@
 
 (define-public (stack-lines dir padding baseline stils)
   "Stack vertically with a baseline-skip."
-  (if (null? stils)
-      empty-stencil
-      (if (null? (cdr stils))
-	  (car stils)
-	  (ly:stencil-combine-at-edge
-	   (car stils) Y dir 
-	   (stack-lines dir padding baseline (cdr stils))
-	   padding baseline))))
+  (define result empty-stencil)
+  (define last-y #f)
+  (do
+      ((last-stencil #f (car p))
+       (p stils (cdr p)))
+      
+      ((null? p))
+
+    (if (number? last-y)
+	(begin
+	  (let* ((dy (max (+ (* dir (interval-bound (ly:stencil-extent last-stencil Y) dir))
+			     padding
+			     (* (- dir) (interval-bound (ly:stencil-extent (car p) Y) (- dir))))
+			  baseline))
+		 (y (+ last-y  (* dir dy))))
+	    
+			  
+	    
+	    (set! result
+		  (ly:stencil-add result (ly:stencil-translate-axis (car p) y Y)))
+	    (set! last-y y)))
+	(begin
+	  (set! last-y 0)
+	  (set! result (car p)))))
+
+  result)
+    
 
 (define-public (bracketify-stencil stil axis thick protusion padding)
   "Add brackets around STIL, producing a new stencil."
@@ -51,6 +70,17 @@
 	  (ly:stencil-combine-at-edge stil (other-axis axis) -1 rb padding))
     stil))
 
+(define-public (make-line-stencil width startx starty endx endy)
+  "Make a line stencil of given linewidth and set its extents accordingly"
+  (let ((xext (cons (min startx endx) (max startx endx)))
+        (yext (cons (min starty endy) (max starty endy))))
+    (ly:make-stencil
+      (list 'draw-line width startx starty endx endy)
+      ; Since the line has rounded edges, we have to / can safely add half the 
+      ; width to all coordinates!
+      (interval-widen xext (/ width 2))
+      (interval-widen yext (/ width 2)))))
+
 (define-public (make-filled-box-stencil xext yext)
   "Make a filled box."
   
@@ -61,10 +91,38 @@
 
 (define-public (make-circle-stencil radius thickness fill)
   "Make a circle of radius @var{radius} and thickness @var{thickness}"
+  (let*
+      ((out-radius (+ radius (/ thickness 2.0))))
+    
   (ly:make-stencil
    (list 'circle radius thickness fill) 
-   (cons (- radius) radius)
-   (cons (- radius) radius)))
+   (cons (- out-radius) out-radius)
+   (cons (- out-radius) out-radius))))
+
+(define-public (make-oval-stencil x-radius y-radius thickness fill)
+  "Make an oval from two Bezier curves, of x radius @var{x-radius}, 
+    y radius @code{y-radius},
+    and thickness @var{thickness} with fill defined by @code{fill}."
+  (let*
+      ((x-out-radius (+ x-radius (/ thickness 2.0))) 
+       (y-out-radius (+ y-radius (/ thickness 2.0))) )
+    
+  (ly:make-stencil
+   (list 'oval x-radius y-radius thickness fill) 
+   (cons (- x-out-radius) x-out-radius)
+   (cons (- y-out-radius) y-out-radius))))
+
+(define-public (make-ellipse-stencil x-radius y-radius thickness fill)
+  "Make an ellipse of x radius @var{x-radius}, y radius @code{y-radius},
+    and thickness @var{thickness} with fill defined by @code{fill}."
+  (let*
+      ((x-out-radius (+ x-radius (/ thickness 2.0))) 
+       (y-out-radius (+ y-radius (/ thickness 2.0))) )
+    
+  (ly:make-stencil
+   (list 'ellipse x-radius y-radius thickness fill) 
+   (cons (- x-out-radius) x-out-radius)
+   (cons (- y-out-radius) y-out-radius))))
 
 (define-public (box-grob-stencil grob)
   "Make a box of exactly the extents of the grob.  The box precisely
@@ -72,8 +130,8 @@ encloses the contents.
 "
   (let* ((xext (ly:grob-extent grob grob 0))
 	 (yext (ly:grob-extent grob grob 1))
-	 (thick 0.1))
-    
+	 (thick 0.01))
+
     (ly:stencil-add
      (make-filled-box-stencil xext (cons (- (car yext) thick) (car yext)))
      (make-filled-box-stencil xext (cons (cdr yext) (+ (cdr yext) thick)))
@@ -96,13 +154,78 @@ encloses the contents.
 
 (define-public (circle-stencil stencil thickness padding)
   "Add a circle around STENCIL, producing a new stencil."
-  (let* ((x-ext (ly:stencil-extent stencil 0))
-	 (y-ext (ly:stencil-extent stencil 1))
-	 (diameter (max (- (cdr x-ext) (car x-ext))
-			(- (cdr y-ext) (car y-ext))))
-	 (radius (+ (/ diameter 2) padding thickness)))
+  (let* ((x-ext (ly:stencil-extent stencil X))
+	 (y-ext (ly:stencil-extent stencil Y))
+	 (diameter (max (interval-length x-ext)
+                        (interval-length y-ext))) 
+	 (radius (+ (/ diameter 2) padding thickness))
+	 (circle (make-circle-stencil radius thickness #f)))
+
+    (ly:stencil-add
+     stencil
+     (ly:stencil-translate circle
+			   (cons
+			    (interval-center x-ext)
+			    (interval-center y-ext))))))
+
+(define-public (oval-stencil stencil thickness x-padding y-padding)
+  "Add an oval around @code{stencil}, padded by the padding pair, 
+   producing a new stencil."
+  (let* ((x-ext (ly:stencil-extent stencil X))
+	 (y-ext (ly:stencil-extent stencil Y))
+         (x-length (+ (interval-length x-ext) x-padding thickness))
+         (y-length (+ (interval-length y-ext) y-padding thickness))
+         (x-radius (* 0.707 x-length) )
+         (y-radius (* 0.707 y-length) )
+	 (oval (make-oval-stencil x-radius y-radius thickness #f)))
+
+    (ly:stencil-add
+     stencil
+     (ly:stencil-translate oval
+			   (cons
+			    (interval-center x-ext)
+			    (interval-center y-ext))))))
+
+(define-public (ellipse-stencil stencil thickness x-padding y-padding)
+  "Add an ellipse around STENCIL, padded by the padding pair, 
+   producing a new stencil."
+  (let* ((x-ext (ly:stencil-extent stencil X))
+	 (y-ext (ly:stencil-extent stencil Y))
+         (x-length (+ (interval-length x-ext) x-padding thickness))
+         (y-length (+ (interval-length y-ext) y-padding thickness))
+         ;(aspect-ratio (/ x-length y-length))
+         (x-radius (* 0.707 x-length) )
+         (y-radius (* 0.707 y-length) )
+	 ;(diameter (max (- (cdr x-ext) (car x-ext))
+	 ;		(- (cdr y-ext) (car y-ext))))
+	 ;(radius (+ (/ diameter 2) padding thickness))
+	 (ellipse (make-ellipse-stencil x-radius y-radius thickness #f)))
+
     (ly:stencil-add
-     (centered-stencil stencil) (make-circle-stencil radius thickness #f))))
+     stencil
+     (ly:stencil-translate ellipse
+			   (cons
+			    (interval-center x-ext)
+			    (interval-center y-ext))))))
+
+(define-public (rounded-box-stencil stencil thickness padding blot)
+   "Add a rounded box around STENCIL, producing a new stencil."  
+
+  (let* ((xext (interval-widen (ly:stencil-extent stencil 0) padding))
+	 (yext (interval-widen (ly:stencil-extent stencil 1) padding))
+   (min-ext (min (-(cdr xext) (car xext)) (-(cdr yext) (car yext))))
+   (ideal-blot (min blot (/ min-ext 2)))
+   (ideal-thickness (min thickness (/ min-ext 2)))
+	 (outer (ly:round-filled-box
+            (interval-widen xext ideal-thickness) 
+            (interval-widen yext ideal-thickness) 
+               ideal-blot))
+	 (inner (ly:make-stencil (list 'color (x11-color 'white) 
+            (ly:stencil-expr (ly:round-filled-box 
+               xext yext (- ideal-blot ideal-thickness)))))))
+    (set! stencil (ly:stencil-add outer inner))
+    stencil))
+
 
 (define-public (fontify-text font-metric text)
   "Set TEXT with font FONT-METRIC, returning a stencil."
@@ -111,13 +234,32 @@ encloses the contents.
      `(text ,font-metric ,text) (car b) (cdr b))))
      
 (define-public (fontify-text-white scale font-metric text)
-  "Set TEXT with scale factor s"
+  "Set TEXT with scale factor SCALE"
   (let* ((b (ly:text-dimension font-metric text))
 	 ;;urg -- workaround for using ps font
          (c `(white-text ,(* 2 scale) ,text)))
     ;;urg -- extent is not from ps font, but we hope it's close
     (ly:make-stencil c (car b) (cdr b))))
 
+(define-public (stencil-with-color stencil color)
+  (ly:make-stencil
+   (list 'color color (ly:stencil-expr stencil))
+   (ly:stencil-extent stencil X)
+   (ly:stencil-extent stencil Y)))
+  
+(define-public (stencil-whiteout stencil)
+  (let*
+      ((x-ext (ly:stencil-extent stencil X))
+       (y-ext (ly:stencil-extent stencil Y))
+
+       )
+    
+    (ly:stencil-add
+     (stencil-with-color (ly:round-filled-box x-ext y-ext 0.0)
+			 white)
+     stencil)
+    ))
+
 (define-public (dimension-arrows destination) 
   "Draw twosided arrow from here to @var{destination}"
   
@@ -179,52 +321,48 @@ encloses the contents.
 ;; spacing variables 
 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
 
-(define-public (annotate-y-interval layout name extent is-length)
-  (let*
-      ((text-props (cons
-		    '((font-size . -3)
-		      (font-family . typewriter))
-		    (layout-extract-page-properties layout)))
-       (annotation #f)
-       )
-
+(define*-public (annotate-y-interval layout name extent is-length
+                                     #:key (color darkblue))
+  (let ((text-props (cons '((font-size . -3)
+			    (font-family . typewriter))
+			  (layout-extract-page-properties layout)))
+	(annotation #f))
+    (define (center-stencil-on-extent stil)
+      (ly:stencil-translate (ly:stencil-aligned-to stil Y CENTER)
+                            (cons 0 (interval-center extent))))
     ;; do something sensible for 0,0 intervals. 
     (set! extent (interval-widen extent 0.001))
     (if (not (interval-sane? extent))
-	(set! annotation (interpret-markup layout text-props
-					   (make-simple-markup (format "~a: NaN/inf" name))))
-	(let*
-	    ((text-stencil (interpret-markup
-			    layout text-props
-			    (make-column-markup
-			     (list
-			      (make-whiteout-markup (make-simple-markup name))
-			      (make-whiteout-markup
-			       (make-simple-markup
-				(cond
-				 ((interval-empty? extent) "empty")
-				 (is-length (format "~$" (interval-length extent)))
-				 (else
-				  (format "(~$,~$)" (car extent)
-					  (cdr extent))))))))))
-	     (arrows
-	      (ly:stencil-translate-axis 
-	       (dimension-arrows (cons 0 (interval-length extent)))
-	       (interval-start extent) Y)))
-	  
+	(set! annotation (interpret-markup
+			  layout text-props
+			  (make-simple-markup (simple-format #f "~a: NaN/inf" name))))
+	(let ((text-stencil (interpret-markup
+			     layout text-props
+                             (markup #:whiteout #:simple name)))
+              (dim-stencil (interpret-markup
+                            layout text-props
+                            (markup #:whiteout
+                                    #:simple (cond
+                                              ((interval-empty? extent)
+                                               (format "empty"))
+                                              (is-length
+                                               (ly:format "~$" (interval-length extent)))
+                                              (else
+                                               (ly:format "(~$,~$)"
+                                                       (car extent) (cdr extent)))))))
+	      (arrows (ly:stencil-translate-axis 
+		       (dimension-arrows (cons 0 (interval-length extent)))
+		       (interval-start extent) Y)))
 	  (set! annotation
-		(ly:stencil-aligned-to text-stencil Y CENTER))
-	  
-	  (set! annotation (ly:stencil-translate
-			    annotation
-			    (cons 0 (interval-center extent))))
-	  
-
+                (center-stencil-on-extent text-stencil))
 	  (set! annotation
-		(ly:stencil-combine-at-edge arrows X RIGHT annotation 0.5 0))
-
+		(ly:stencil-combine-at-edge arrows X RIGHT annotation 0.5))
+	  (set! annotation
+		(ly:stencil-combine-at-edge annotation X LEFT
+                                            (center-stencil-on-extent dim-stencil)
+                                            0.5))
 	  (set! annotation
-		(ly:make-stencil (ly:stencil-expr annotation)
+		(ly:make-stencil (list 'color color (ly:stencil-expr annotation))
 				 (ly:stencil-extent annotation X)
 				 (cons 10000 -10000)))))
     annotation))
@@ -233,28 +371,39 @@ encloses the contents.
 (define-public (eps-file->stencil axis size file-name)
   (let*
       ((contents (ly:gulp-file file-name))
-       (bbox (get-postscript-bbox contents))
+       (bbox (get-postscript-bbox (car (string-split contents #\nul))))
        (bbox-size (if (= axis X)
 		      (- (list-ref bbox 2) (list-ref bbox 0))
 		      (- (list-ref bbox 3) (list-ref bbox 1))
 		      ))
-       (factor (exact->inexact (/ size bbox-size)))
+       (factor (if (< 0 bbox-size)
+		   (exact->inexact (/ size bbox-size))
+		   0))
        (scaled-bbox
-	(map (lambda (x) (* factor x)) bbox)))
+	(map (lambda (x) (* factor x)) bbox))
+       (clip-rect-string (ly:format
+			  "~a ~a ~a ~a rectclip"
+			  (list-ref bbox 0) 
+			  (list-ref bbox 1) 
+			  (- (list-ref bbox 2) (list-ref bbox 0))
+			  (- (list-ref bbox 3) (list-ref bbox 1)))))
+    
 
     (if bbox
 	(ly:make-stencil
 	 (list
 	  'embedded-ps
 	  (string-append
-	   (format
+	   (ly:format
 	   "
 gsave
 currentpoint translate
 BeginEPSF
-~a ~a scale
+~a dup scale
+~a 
 %%BeginDocument: ~a
-" 	   factor factor
+" 	   factor clip-rect-string
+
 	   file-name
 	   )
 	   contents
@@ -269,16 +418,33 @@ grestore
 	(ly:make-stencil "" '(0 . 0) '(0 . 0)))
     ))
 
+;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
+;; output signatures.
+
+(define-public (write-system-signatures basename paper-systems count)
+  (if (pair? paper-systems)
+      (begin
+	(let*
+	    ((outname (simple-format #f "~a-~a.signature" basename count)) )
+	     
+	  (ly:message "Writing ~a" outname)
+	  (write-system-signature outname (car paper-systems))
+	  (write-system-signatures basename (cdr paper-systems) (1+ count))))))
 
+(use-modules (scm paper-system))
 (define-public (write-system-signature filename paper-system)
   (define (float? x)
     (and (number? x) (inexact? x)))
 
   (define system-grob
     (paper-system-system-grob paper-system))
-  (define output (open-output-file filename))
   
+  (define output (open-output-file filename))
+
+  ;; todo: optionally use a command line flag? Or just junk this?
+  (define compare-expressions #f)
   (define (strip-floats expr)
+    "Replace floats by #f"
     (cond
      ((float? expr) #f)
      ((ly:font-metric? expr) (ly:font-name expr))
@@ -287,6 +453,7 @@ grestore
      (else expr)))
 
   (define (fold-false-pairs expr)
+    "Try to remove lists of #f as much as possible."
     (if (pair? expr)
 	(let*
 	    ((first (car expr))
@@ -297,52 +464,49 @@ grestore
 	      rest))
 	expr))
   
-  (define (music-cause grob)
-    (let*
-	((cause (ly:grob-property  grob 'cause)))
-      
-      (cond
-       ((ly:music? cause) cause)
-       ((ly:grob? cause) (music-cause cause))
-       (else #f))))
+  (define (raw-string expr)
+    "escape quotes and slashes for python consumption"
+    (regexp-substitute/global #f "[@\n]" (simple-format #f "~a" expr) 'pre " " 'post))
 
-  (define (pythonic-string expr)
-    (string-regexp-substitute "'" "\\'" (format "~a" expr)))
-
-  (define (pythonic-pair expr)
-    (format "(~a,~a)"
+  (define (raw-pair expr)
+    (simple-format #f "~a ~a"
 	    (car expr) (cdr expr)))
-		    
+  
   (define (found-grob expr)
     (let*
 	((grob (car expr))
 	 (rest (cdr expr))
 	 (collected '())
-	 (cause (music-cause grob))
-	 (input (if (ly:music? cause) (ly:music-property cause 'origin) #f))
+	 (cause (event-cause grob))
+	 (input (if (ly:stream-event? cause) (ly:event-property cause 'origin) #f))
 	 (location (if (ly:input-location? input) (ly:input-file-line-char-column input) '()))
 
+	 ;; todo: use stencil extent if available.
 	 (x-ext (ly:grob-extent grob system-grob X))
 	 (y-ext (ly:grob-extent grob system-grob Y))
-	 )
-
-      (interpret-for-signature #f (lambda (e)
-				    (set! collected (cons e collected)))
-			       rest)
-
-      (format output
-	      "['~a', '~a', ~a, ~a, '~a'],\n"
+	 (expression-skeleton
+	  (if compare-expressions
+	      (interpret-for-signature
+	       #f (lambda (e)
+		    (set! collected (cons e collected)))
+	       rest)
+	     "")))
+
+      (simple-format output
+	      "~a@~a@~a@~a@~a\n"
 	      (cdr (assq 'name (ly:grob-property grob 'meta) ))
-	      (pythonic-string location)
-	      (pythonic-pair (if (interval-empty? x-ext) '(0 . 0) x-ext))
-	      (pythonic-pair (if (interval-empty? y-ext) '(0 . 0) y-ext))
-	      (pythonic-string collected))
+	      (raw-string location)
+	      (raw-pair (if (interval-empty? x-ext) '(1 . -1) x-ext))
+	      (raw-pair (if (interval-empty? y-ext) '(1 . -1) y-ext))
+	      (raw-string collected))
       ))
 
   (define (interpret-for-signature escape collect expr)
     (define (interpret expr)
       (let*
-	  ((head (car expr)))
+	  ((head (if (pair? expr)
+		     (car expr)
+		     #f)))
 
 	(cond
 	 ((eq? head 'grob-cause) (escape (cdr expr)))
@@ -358,6 +522,14 @@ grestore
 
     (interpret expr))
 
-  (interpret-for-signature found-grob (lambda (x) #f)
-			   (ly:stencil-expr
-			    (paper-system-stencil paper-system))))
+  (if (ly:grob? system-grob)
+      (begin
+	(display (simple-format #f "# Output signature\n# Generated by LilyPond ~a\n" (lilypond-version))
+		 output)
+	(interpret-for-signature found-grob (lambda (x) #f)
+				 (ly:stencil-expr
+				  (paper-system-stencil paper-system)))))
+
+  ;; should be superfluous, but leaking "too many open files"?
+  (close-port output))
+