* generic/tkCanvas.c: allow -selectforeground option to be None; add

	* generic/tkCanvText.c:	fallback to fgColor when selFgColor is None
	* generic/tkEntry.c:	(new default on aqua to match native L&F).
	* generic/tkListbox.c:
	* generic/tkText.c:

	* generic/tkCanvas.c:	   add support for bypassing all of Tk's double
	* generic/tkEntry.c:	   buffered drawing into intermediate pixmaps
	* generic/tkFrame.c:	   (via TK_NO_DOUBLE_BUFFERING #define), it is
	* generic/tkListbox.c:	   unnecessary & wasteful on aqua where all
	* generic/tkPanedWindow.c: drawing is already double-buffered by the
	* generic/tkTextDisp.c:	   window server. (Use of this on other
	* generic/ttk/ttkWidget.c: platforms would only require implementation
	* unix/tkUnixScale.c:	   of TkpClipDrawableToRect()).

1 files changed, 16 insertions, 4 deletions

diff --git a/generic/tkListbox.c b/generic/tkListbox.c
index f5ade9f..87d82c1 100644
--- a/generic/tkListbox.c
+++ b/generic/tkListbox.c
@@ -11,7 +11,7 @@
  * See the file "license.terms" for information on usage and redistribution of
  * this file, and for a DISCLAIMER OF ALL WARRANTIES.
  *
- * RCS: @(#) $Id: tkListbox.c,v 1.39 2007/04/17 14:32:28 dkf Exp $
+ * RCS: @(#) $Id: tkListbox.c,v 1.40 2007/04/23 21:15:18 das Exp $
  */
 
 #include "tkPort.h"
@@ -280,7 +280,7 @@ static const Tk_OptionSpec optionSpecs[] = {
 	 Tk_Offset(Listbox, selBorderWidth), 0, 0, 0},
     {TK_OPTION_COLOR, "-selectforeground", "selectForeground", "Background",
 	 DEF_LISTBOX_SELECT_FG_COLOR, -1, Tk_Offset(Listbox, selFgColorPtr),
-	 0, (ClientData) DEF_LISTBOX_SELECT_FG_MONO, 0},
+	 TK_CONFIG_NULL_OK, (ClientData) DEF_LISTBOX_SELECT_FG_MONO, 0},
     {TK_OPTION_STRING, "-selectmode", "selectMode", "SelectMode",
 	 DEF_LISTBOX_SELECT_MODE, -1, Tk_Offset(Listbox, selectMode),
 	 TK_OPTION_NULL_OK, 0, 0},
@@ -1776,7 +1776,9 @@ ListboxWorldChanged(
     }
     listPtr->textGC = gc;
 
-    gcValues.foreground = listPtr->selFgColorPtr->pixel;
+    if (listPtr->selFgColorPtr != NULL) {
+	gcValues.foreground = listPtr->selFgColorPtr->pixel;
+    }
     gcValues.font = Tk_FontId(listPtr->tkfont);
     mask = GCForeground | GCFont;
     gc = Tk_GetGC(listPtr->tkwin, mask, &gcValues);
@@ -1861,6 +1863,7 @@ DisplayListbox(
     listPtr->flags &= ~(REDRAW_PENDING|UPDATE_V_SCROLLBAR|UPDATE_H_SCROLLBAR);
     Tcl_Release((ClientData) listPtr);
 
+#ifndef TK_NO_DOUBLE_BUFFERING
     /*
      * Redrawing is done in a temporary pixmap that is allocated here and
      * freed at the end of the procedure. All drawing is done to the pixmap,
@@ -1871,6 +1874,9 @@ DisplayListbox(
 
     pixmap = Tk_GetPixmap(listPtr->display, Tk_WindowId(tkwin),
 	    Tk_Width(tkwin), Tk_Height(tkwin), Tk_Depth(tkwin));
+#else
+    pixmap = Tk_WindowId(tkwin);
+#endif /* TK_NO_DOUBLE_BUFFERING */
     Tk_Fill3DRectangle(tkwin, pixmap, listPtr->normalBorder, 0, 0,
 	    Tk_Width(tkwin), Tk_Height(tkwin), 0, TK_RELIEF_FLAT);
 
@@ -1935,7 +1941,11 @@ DisplayListbox(
 		     * Default GC has the values from the widget at large.
 		     */
 
-		    gcValues.foreground = listPtr->selFgColorPtr->pixel;
+		    if (listPtr->selFgColorPtr) {
+			gcValues.foreground = listPtr->selFgColorPtr->pixel;
+		    } else {
+			gcValues.foreground = listPtr->fgColorPtr->pixel;
+		    }
 		    gcValues.font = Tk_FontId(listPtr->tkfont);
 		    gcValues.graphics_exposures = False;
 		    mask = GCForeground | GCFont | GCGraphicsExposures;
@@ -2152,10 +2162,12 @@ DisplayListbox(
 		    listPtr->highlightWidth, pixmap);
 	}
     }
+#ifndef TK_NO_DOUBLE_BUFFERING
     XCopyArea(listPtr->display, pixmap, Tk_WindowId(tkwin),
 	    listPtr->textGC, 0, 0, (unsigned) Tk_Width(tkwin),
 	    (unsigned) Tk_Height(tkwin), 0, 0);
     Tk_FreePixmap(listPtr->display, pixmap);
+#endif /* TK_NO_DOUBLE_BUFFERING */
 }
 
 /*