* 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, 12 insertions, 4 deletions

diff --git a/generic/tkEntry.c b/generic/tkEntry.c
index 0ef4bc8..0f0b475 100644
--- a/generic/tkEntry.c
+++ b/generic/tkEntry.c
@@ -14,7 +14,7 @@
  * See the file "license.terms" for information on usage and redistribution of
  * this file, and for a DISCLAIMER OF ALL WARRANTIES.
  *
- * RCS: @(#) $Id: tkEntry.c,v 1.43 2007/04/17 14:36:49 dkf Exp $
+ * RCS: @(#) $Id: tkEntry.c,v 1.44 2007/04/23 21:15:18 das Exp $
  */
 
 #include "tkInt.h"
@@ -135,7 +135,7 @@ static const Tk_OptionSpec entryOptSpec[] = {
 	0, (ClientData) DEF_ENTRY_SELECT_BD_MONO, 0},
     {TK_OPTION_COLOR, "-selectforeground", "selectForeground", "Background",
 	DEF_ENTRY_SELECT_FG_COLOR, -1, Tk_Offset(Entry, selFgColorPtr),
-	0, (ClientData) DEF_ENTRY_SELECT_FG_MONO, 0},
+	TK_CONFIG_NULL_OK, (ClientData) DEF_ENTRY_SELECT_FG_MONO, 0},
     {TK_OPTION_STRING, "-show", "show", "Show",
 	DEF_ENTRY_SHOW, -1, Tk_Offset(Entry, showChar),
 	TK_OPTION_NULL_OK, 0, 0},
@@ -281,7 +281,7 @@ static const Tk_OptionSpec sbOptSpec[] = {
 	0, (ClientData) DEF_ENTRY_SELECT_BD_MONO, 0},
     {TK_OPTION_COLOR, "-selectforeground", "selectForeground", "Background",
 	DEF_ENTRY_SELECT_FG_COLOR, -1, Tk_Offset(Entry, selFgColorPtr),
-	0, (ClientData) DEF_ENTRY_SELECT_FG_MONO, 0},
+	TK_CONFIG_NULL_OK, (ClientData) DEF_ENTRY_SELECT_FG_MONO, 0},
     {TK_OPTION_STRING_TABLE, "-state", "state", "State",
 	DEF_ENTRY_STATE, -1, Tk_Offset(Entry, state),
 	0, (ClientData) stateStrings, 0},
@@ -1449,7 +1449,9 @@ EntryWorldChanged(
     }
     entryPtr->textGC = gc;
 
-    gcValues.foreground = entryPtr->selFgColorPtr->pixel;
+    if (entryPtr->selFgColorPtr != NULL) {
+	gcValues.foreground = entryPtr->selFgColorPtr->pixel;
+    }
     gcValues.font = Tk_FontId(entryPtr->tkfont);
     mask = GCForeground | GCFont;
     gc = Tk_GetGC(entryPtr->tkwin, mask, &gcValues);
@@ -1583,6 +1585,7 @@ DisplayEntry(
 	Tcl_Release((ClientData) entryPtr);
     }
 
+#ifndef TK_NO_DOUBLE_BUFFERING
     /*
      * In order to avoid screen flashes, this function redraws the textual
      * area of the entry into off-screen memory, then copies it back on-screen
@@ -1592,6 +1595,9 @@ DisplayEntry(
 
     pixmap = Tk_GetPixmap(entryPtr->display, Tk_WindowId(tkwin),
 	    Tk_Width(tkwin), Tk_Height(tkwin), Tk_Depth(tkwin));
+#else
+    pixmap = Tk_WindowId(tkwin);
+#endif /* TK_NO_DOUBLE_BUFFERING */
 
     /*
      * Compute x-coordinate of the pixel just after last visible one, plus
@@ -1827,6 +1833,7 @@ DisplayEntry(
 	}
     }
 
+#ifndef TK_NO_DOUBLE_BUFFERING
     /*
      * Everything's been redisplayed; now copy the pixmap onto the screen and
      * free up the pixmap.
@@ -1836,6 +1843,7 @@ DisplayEntry(
 	    0, 0, (unsigned) Tk_Width(tkwin), (unsigned) Tk_Height(tkwin),
 	    0, 0);
     Tk_FreePixmap(entryPtr->display, pixmap);
+#endif /* TK_NO_DOUBLE_BUFFERING */
     entryPtr->flags &= ~BORDER_NEEDED;
 }