X-Git-Url: https://git.distorted.org.uk/~mdw/clg/blobdiff_plain/e4251a293459eb4ffaf4b943df01155d39cfa9ea..e7f1852fd2ddecf0fe99df30c3fd1f8a90c13607:/gdk/gdk.lisp

diff --git a/gdk/gdk.lisp b/gdk/gdk.lisp
index 04467b1..cc1af87 100644
--- 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 1.22 2006-02-26 15:09:44 espen Exp $
+;; $Id: gdk.lisp,v 1.25 2006-04-11 18:28:38 espen Exp $
 
 
 (in-package "GDK")
@@ -503,13 +503,24 @@
 
 ;;; 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
@@ -518,15 +529,25 @@
      %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