Defining views with controllers and meshes

[gacela.git] / src / views.scm

diff --git a/src/views.scm b/src/views.scm
index 46657293c54d94bd5ee0509b43dd1a06fd9aeb4d..b45fa91f4c24e387be36cb344b3ad6312bbd28e2 100644 (file)
--- a/src/views.scm
+++ b/src/views.scm
@@ -26,23 +26,49 @@
 
 (define view-type
   (make-record-type "view" 
-                   '(id constructor body meshes priority)
+                   '(id controllers meshes priority)
                    (lambda (record port)
                      (format port "#<view: ~a meshes>"
                              (length (view-meshes record))))))
 
-(define (make-view constructor) ((record-constructor view-type) (gensym) constructor #f '() 0))
+(define (make-view controllers meshes priority) ((record-constructor view-type) (gensym) controllers meshes priority))
 (define view? (record-predicate view-type))
 (define view-id (record-accessor view-type 'id))
-(define view-constructor (record-accessor view-type 'constructor))
-(define view-body (record-accessor view-type 'body))
 (define view-meshes (record-accessor view-type 'meshes))
+(define view-meshes-set! (record-modifier view-type 'meshes))
+(define view-controllers (record-accessor view-type 'controllers))
+(define view-controllers-set! (record-modifier view-type 'controllers))
 (define view-priority (record-accessor view-type 'priority))
 
-(define-macro (define-view body)
-  `(make-view (lambda () ,body)))
+;(defmacro* view (#:key (priority 0) . elements)
+(define-macro (view-elements . elements)
+  (cond ((null? elements) `'(() ()))
+       (else
+        `(let ((l (view-elements ,@(cdr elements))))
+           ,(let ((e (car elements)))
+              `(cond ((mesh? ,e)
+                      (list (car l) (cons ,e (cadr l))))
+                     ((procedure? ,e)
+                      (list (cons ,(if (list? e) e `(lambda () (,e))) (car l))
+                            (cadr l)))
+                     (else l)))))))
+
+(define* (view2 #:key (priority 0) . elements)
+  (let ((controllers '())
+       (meshes '()))
+    (define (f elements)
+      (cond ((not (null? elements))
+            (cond ((mesh? (car elements)) (set! meshes (cons (car elements) meshes)))
+                  ((procedure? (car elements)) (set! controllers (cons (car elements) controllers))))
+            (f (cdr elements)))))
+    (f elements)
+    (display controllers)
+    (newline)
+    (display meshes)
+    (newline)))
 
 (define activated-views '())
+
 (define (sort-views views-alist)
   (sort views-alist
        (lambda (v1 v2)
@@ -58,14 +84,15 @@
 
 (define (view-priority-set! view priority)
   ((record-modifier view-type 'priority) view priority)
-  (set! activated-views (sort-views activated-views)))
+  (if (view-actived? view)
+      (set! activated-views (sort-views activated-views))))
 
 (define current-view #f)
 
 (define* (run-views #:optional (views activated-views))
   (cond ((not (null? views))
         (set! current-view (cdar views))
-        ; controllers go here
+        ;((view-body current-view))
         (draw-meshes (view-meshes current-view))
         (run-views (cdr views)))))
 
@@ -77,7 +104,7 @@
         (draw-meshes (cdr meshes)))))
 
 
-(define default-view (activate-view (define-view '())))
+;(define default-view (activate-view (make-view (lambda () #f))))
 
 
 ;;; Meshes
@@ -173,12 +200,16 @@
 (define* (show mesh #:optional (view current-view))
   (let ((id (mesh-inner-property mesh 'id))
        (table (view-meshes view)))
-    (if (not (hash-ref table id))
-       (hash-set! table id mesh))))
+    (if (not (assoc-ref table id))
+       (view-meshes-set! view (assoc-set! table id mesh))))
+  mesh)
 
 (define* (hide mesh #:optional (view current-view))
-  (let ((table (view-meshes view)))
-    (hash-remove! table (mesh-inner-property mesh 'id))))
+  (let ((id (mesh-inner-property mesh 'id))
+       (table (view-meshes view)))
+    (if (assoc-ref table id)
+       (view-meshes-set! view (assoc-remove! table id))))
+  mesh)
 
 (define* (translate mesh x y #:optional (z 0))
   (((record-accessor mesh-type 'translate) mesh) x y z)