From 8b71a9ca6f24fcd0e28769558fc23b4dff1adf18 Mon Sep 17 00:00:00 2001
From: =?utf8?q?Pavel=20Jan=C3=ADk?= <Pavel@Janik.cz>
Date: Mon, 6 May 2002 18:56:25 +0000
Subject: [PATCH] (xlwMenuResources): New resource. (find_next_selectable):
 Return current item when the menu is not poped up. Rename `inactive_gc' to
 `disabled_gc'. Use lighter/darker color for disabled menu items instead of
 using stipple. Use stipple only when better color can not be determined
 automatically.

---
 lwlib/ChangeLog | 16 ++++++++++++++
 lwlib/xlwmenu.c | 58 +++++++++++++++++++++++++++++++++++++++++--------
 2 files changed, 65 insertions(+), 9 deletions(-)

diff --git a/lwlib/ChangeLog b/lwlib/ChangeLog
index 754552fa5c..b4c18ee265 100644
--- a/lwlib/ChangeLog
+++ b/lwlib/ChangeLog
@@ -1,3 +1,19 @@
+2002-05-06  Pavel Jan,Bm(Bk  <Pavel@Janik.cz>
+
+	* xlwmenu.c (xlwMenuResources): New resource.
+	(find_next_selectable): Return current item when the menu is not
+	poped up.
+	Rename `inactive_gc' to `disabled_gc'.
+	Use lighter/darker color for disabled menu items instead of using
+	stipple.  Use stipple only when better color can not be
+	determined automatically.
+
+	* xlwmenu.h (XtNdisabledForeground, XtCDisabledForeground):
+	New resource names.
+
+	* xlwmenuP.h (_XlwMenu_part): Add new member `disabled_foreground'.
+	Rename `inactive_gc' to `disabled_gc'.
+
 2002-04-29  Pavel Jan,Bm(Bk  <Pavel@Janik.cz>
 
 	* xlwmenu.c <XtNmargin, XtNverticalSpacing, XmNshadowThickness>:
diff --git a/lwlib/xlwmenu.c b/lwlib/xlwmenu.c
index 691213ab3b..e712ed8071 100644
--- a/lwlib/xlwmenu.c
+++ b/lwlib/xlwmenu.c
@@ -139,6 +139,8 @@ xlwMenuResources[] =
      offset(menu.font),XtRString, "XtDefaultFont"},
   {XtNforeground, XtCForeground, XtRPixel, sizeof(Pixel),
      offset(menu.foreground), XtRString, "XtDefaultForeground"},
+  {XtNdisabledForeground, XtCDisabledForeground, XtRPixel, sizeof(Pixel),
+   offset(menu.disabled_foreground), XtRString, (XtPointer)NULL},
   {XtNbuttonForeground, XtCButtonForeground, XtRPixel, sizeof(Pixel),
      offset(menu.button_foreground), XtRString, "XtDefaultForeground"},
   {XtNmargin, XtCMargin, XtRDimension,  sizeof(Dimension),
@@ -997,7 +999,7 @@ display_menu_item (mw, val, ws, where, highlighted_p, horizontal_p,
       if (val->enabled)
 	text_gc = mw->menu.foreground_gc;
       else
-	text_gc = mw->menu.inactive_gc;
+	text_gc = mw->menu.disabled_gc;
       deco_gc = mw->menu.foreground_gc;
 
       if (separator_p)
@@ -1453,6 +1455,8 @@ make_drawing_gcs (mw)
      XlwMenuWidget mw;
 {
   XGCValues xgcv;
+  XColor temp;
+  int delta;
 
   xgcv.font = mw->menu.font->fid;
   xgcv.foreground = mw->menu.foreground;
@@ -1469,13 +1473,47 @@ make_drawing_gcs (mw)
 				&xgcv);
 
   xgcv.font = mw->menu.font->fid;
-  xgcv.foreground = mw->menu.foreground;
   xgcv.background = mw->core.background_pixel;
-  xgcv.fill_style = FillStippled;
-  xgcv.stipple = mw->menu.gray_pixmap;
-  mw->menu.inactive_gc = XtGetGC ((Widget)mw,
-				  (GCFont | GCForeground | GCBackground
-				   | GCFillStyle | GCStipple), &xgcv);
+
+#define BRIGHTNESS(color) (((color) & 0xff) + (((color) >> 8) & 0xff) + (((color) >> 16) & 0xff))
+
+  /* Allocate color for disabled menu-items.  */
+  if (BRIGHTNESS(mw->menu.foreground) < BRIGHTNESS(mw->core.background_pixel))
+    {
+      delta = 2.3;
+      temp.pixel = mw->menu.foreground;
+    }
+  else
+    {
+      delta = 1.2;
+      temp.pixel = mw->core.background_pixel;
+    }
+
+  x_alloc_lighter_color_for_widget ((Widget) mw, XtDisplay ((Widget) mw),
+				    mw->core.colormap,
+				    &temp.pixel,
+				    delta,
+				    0x8000);
+  mw->menu.disabled_foreground = temp.pixel;
+
+  if (mw->menu.foreground == mw->menu.disabled_foreground
+      || mw->core.background_pixel == mw->menu.disabled_foreground)
+    {
+      /* Too few colors, use stipple.  */
+      xgcv.foreground = mw->menu.foreground;
+      xgcv.fill_style = FillStippled;
+      xgcv.stipple = mw->menu.gray_pixmap;
+      mw->menu.disabled_gc = XtGetGC ((Widget)mw,
+				      (GCFont | GCForeground | GCBackground
+				       | GCFillStyle | GCStipple), &xgcv);
+    }
+  else
+    {
+      /* Many colors available, use disabled pixel.  */
+      xgcv.foreground = mw->menu.disabled_foreground;
+      mw->menu.disabled_gc = XtGetGC ((Widget)mw,
+				      (GCFont | GCForeground | GCBackground), &xgcv);
+    }
 
   xgcv.font = mw->menu.font->fid;
   xgcv.foreground = mw->menu.button_foreground;
@@ -1500,13 +1538,13 @@ release_drawing_gcs (mw)
 {
   XtReleaseGC ((Widget) mw, mw->menu.foreground_gc);
   XtReleaseGC ((Widget) mw, mw->menu.button_gc);
-  XtReleaseGC ((Widget) mw, mw->menu.inactive_gc);
+  XtReleaseGC ((Widget) mw, mw->menu.disabled_gc);
   XtReleaseGC ((Widget) mw, mw->menu.inactive_button_gc);
   XtReleaseGC ((Widget) mw, mw->menu.background_gc);
   /* let's get some segvs if we try to use these... */
   mw->menu.foreground_gc = (GC) -1;
   mw->menu.button_gc = (GC) -1;
-  mw->menu.inactive_gc = (GC) -1;
+  mw->menu.disabled_gc = (GC) -1;
   mw->menu.inactive_button_gc = (GC) -1;
   mw->menu.background_gc = (GC) -1;
 }
@@ -2050,6 +2088,8 @@ find_next_selectable (mw, item)
 
   if (current == item)
     {
+      if (mw->menu.old_depth < 2)
+	return current;
       current = mw->menu.old_stack [mw->menu.old_depth - 2]->contents;
 
       while (lw_separator_p (current->name, &separator, 0) || !current->enabled)
-- 
2.39.2