Custom types are now re-registered when a saved image is loaded

[clg] / gdk / gdk.lisp

diff --git a/gdk/gdk.lisp b/gdk/gdk.lisp
index d3dae2e4c5f6bf04f5a3a457e1d79faca26d9fdf..798a6576b6f73bc8f886ed39c67dd8e4f1e0fc06 100644 (file)
--- a/gdk/gdk.lisp
+++ b/gdk/gdk.lisp
@@ -20,7 +20,7 @@
 ;; TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
 ;; SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 
-;; $Id: gdk.lisp,v 1.18 2005/11/10 09:01:36 espen Exp $
+;; $Id: gdk.lisp,v 1.25 2006/04/11 18:28:38 espen Exp $
 
 
 (in-package "GDK")
@@ -422,14 +422,12 @@ (defbinding rgb-init () nil)
 
 ;;; Cursor
 
-(defmethod initialize-instance ((cursor cursor) &key type mask fg bg 
-                               (x 0) (y 0) (display (display-get-default)))
-  (setf 
-   (slot-value cursor 'location)
-   (etypecase type
-     (keyword (%cursor-new-for-display display type))
-     (pixbuf (%cursor-new-from-pixbuf display type x y))
-     (pixmap (%cursor-new-from-pixmap type mask fg bg x y)))))
+(defmethod allocate-foreign ((cursor cursor) &key type mask fg bg 
+                            (x 0) (y 0) (display (display-get-default)))
+  (etypecase type
+    (keyword (%cursor-new-for-display display type))
+    (pixbuf (%cursor-new-from-pixbuf display type x y))
+    (pixmap (%cursor-new-from-pixmap type mask fg bg x y))))
 
 
 (defbinding %cursor-new-for-display () pointer
@@ -505,13 +503,24 @@ (defun pixmap-create (source &key color window colormap)
 
 ;;; Color
 
+(defbinding %color-copy () pointer
+  (location pointer))
+
+(defmethod allocate-foreign ((color color)  &rest initargs)
+  (declare (ignore color initargs))
+  ;; Color structs are allocated as memory chunks by gdk, and since
+  ;; there is no gdk_color_new we have to use this hack to get a new
+  ;; color chunk
+  (with-allocated-memory (location #.(foreign-size (find-class 'color)))
+    (%color-copy location)))
+
 (defun %scale-value (value)
   (etypecase value
     (integer value)
     (float (truncate (* value 65535)))))
 
 (defmethod initialize-instance ((color color) &rest initargs
-                               &key red green blue)
+                               &key (red 0.0) (green 0.0) (blue 0.0))
   (declare (ignore initargs))
   (call-next-method)
   (with-slots ((%red red) (%green green) (%blue blue)) color
@@ -520,15 +529,25 @@ (defmethod initialize-instance ((color color) &rest initargs
      %green (%scale-value green)
      %blue (%scale-value blue))))
 
+(defbinding %color-parse () boolean
+  (spec string)
+  (color color :return))
+
+(defun color-parse (spec &optional (color (make-instance 'color)))
+  (multiple-value-bind (succeeded-p color) (%color-parse spec color)
+    (if succeeded-p
+       color
+      (error "Parsing color specification ~S failed." spec))))
+
 (defun ensure-color (color)
   (etypecase color
     (null nil)
     (color color)
+    (string (color-parse color))
     (vector
-     (make-instance
-      'color :red (svref color 0) :green (svref color 1)
-      :blue (svref color 2)))))
-       
+     (make-instance 'color 
+      :red (svref color 0) :green (svref color 1) :blue (svref color 2)))))
+
 
   
 ;;; Drawable
@@ -690,9 +709,15 @@ (defbinding drawable-copy-to-image
 (defbinding keyval-name () string
   (keyval unsigned-int))
 
-(defbinding keyval-from-name () unsigned-int
+(defbinding %keyval-from-name () unsigned-int
   (name string))
 
+(defun keyval-from-name (name)
+  "Returns the keysym value for the given key name or NIL if it is not a valid name."
+  (let ((keyval (%keyval-from-name name)))
+    (unless (zerop keyval)
+      keyval)))
+
 (defbinding keyval-to-upper () unsigned-int
   (keyval unsigned-int))
 
@@ -712,6 +737,13 @@ (progn
   (defbinding cairo-create () cairo:context
     (drawable drawable))
 
+  (defmacro with-cairo-context ((cr drawable) &body body)
+    `(let ((,cr (cairo-create ,drawable)))
+       (unwind-protect
+          (progn ,@body)
+        (unreference-foreign 'cairo:context (foreign-location ,cr))
+        (invalidate-instance ,cr))))
+
   (defbinding cairo-set-source-color () nil
     (cr cairo:context)
     (color color))