Parse and display contacts’ profile-photos

contact.scm

@@ -25,6 +25,7 @@
         (chicken string)
         (chicken time)
         (srfi 1)
+        (srfi 4)
         (srfi 13)
         (srfi 18)
         (prefix getopt-long getopt:)
@@ -209,7 +210,7 @@
 ;; fields.
 (define property->formname-alist
   '((FN . "name")
-    (ADR . "address")
+;;    (ADR . "address")
     (TEL . "homePhone")
     (TEL . "workPhone")
     (EMAIL . "eMail")
@@ -227,9 +228,35 @@
          (let* [(formname (alist-ref (car property) property->formname-alist))
                 (lineEditName (conc formname "LineEdit"))
                 (lineEditWidget (if formname (qt:find window lineEditName) #f))]
-           (if lineEditWidget
+           (cond
-               (set! (qt:property lineEditWidget "text") (last property)))))
+            [lineEditWidget
+             (set! (qt:property lineEditWidget "text") (last property))]
+            [(and (eq? (car property) 'PHOTO)
+                  (list? (last property)))
+             (let* [(avatar (qt:find window "avatarLabel"))
+                    (old-pixmap (if avatar (qt:property avatar "pixmap")))
+                    [new-pixmap (if avatar (u8vector->pixmap (cadr (last property))))]]
+               (when avatar
+                 (set! (qt:property avatar "pixmap") new-pixmap)
+                 (qt:delete old-pixmap)))])))
        vcard-alist))
 
 
+;; Given a image bytevector (u8vector), create a corresponding pixmap.
+(define (u8vector->pixmap vector)
+  (let* ([temp-file (write-temporary-file vector)]
+         [pixmap (qt:pixmap temp-file)])
+    (delete-file* temp-file)
+    pixmap))
+
+
+;; Given a u8vector for file-contents, create a tempory file and write the
+;; contents to it. Returns the pathname.
+(define (write-temporary-file u8vector-contents)
+  (let [(temp-file (create-temporary-file))]
+    (with-output-to-file temp-file
+      (lambda () (map write-byte (u8vector->list u8vector-contents))))
+    temp-file))
+
+
 (init)

contact.ui

@@ -22,6 +22,12 @@
       </property>
       <item>
        <widget class="QLabel" name="avatarLabel">
+        <property name="maximumSize">
+         <size>
+          <width>100</width>
+          <height>100</height>
+         </size>
+        </property>
         <property name="text">
          <string>Profile picture</string>
         </property>