Add support for cursor_foreground_colors

	* ../src/pgtkterm.c (x_set_cursor_gc):

	* ../src/pgtkfns.c (x_set_cursor_color, Fx_create_frame)
	(syms_of_pgtkfns):

	* src/pgtkterm.h (struct pgtk_output):

cursor_foreground_color 対応。

あんまり意味なかった感じ。

3 files changed, 49 insertions, 20 deletions

diff --git a/src/pgtkfns.c b/src/pgtkfns.c
index 67391fac86f..b08b81a885c 100644
--- a/src/pgtkfns.c
+++ b/src/pgtkfns.c
@@ -197,25 +197,49 @@ x_set_background_color (struct frame *f, Lisp_Object arg, Lisp_Object oldval)
 static void
 x_set_cursor_color (struct frame *f, Lisp_Object arg, Lisp_Object oldval)
 {
+  unsigned long fore_pixel, pixel;
+  struct pgtk_output *x = f->output_data.pgtk;
   Emacs_Color col;
 
-  block_input ();
-  if (pgtk_lisp_to_color (arg, &col))
+  if (!NILP (Vx_cursor_fore_pixel))
     {
-      store_frame_param (f, Qcursor_color, oldval);
-      unblock_input ();
-      error ("Unknown color");
+      if (pgtk_lisp_to_color(Vx_cursor_fore_pixel, &col))
+        signal_error ("Undefined color", Vx_cursor_fore_pixel);
+      fore_pixel = col.pixel;
     }
+  else
+    fore_pixel = FRAME_BACKGROUND_PIXEL (f);
 
-  FRAME_CURSOR_COLOR (f) = col.pixel;
+  if (pgtk_lisp_to_color(arg, &col))
+    signal_error ("Undefined color", arg);
+  pixel = col.pixel;
 
-  if (FRAME_VISIBLE_P (f))
+  /* Make sure that the cursor color differs from the background color.  */
+  if (pixel == FRAME_BACKGROUND_PIXEL (f))
+    {
+      pixel = x->mouse_color;
+      if (pixel == fore_pixel)
+        {
+          fore_pixel = FRAME_BACKGROUND_PIXEL (f);
+        }
+    }
+
+  x->cursor_foreground_color = fore_pixel;
+  x->cursor_color = pixel;
+
+  if (FRAME_X_WINDOW (f) != 0)
     {
-      x_update_cursor (f, 0);
-      x_update_cursor (f, 1);
+      x->cursor_xgcv.background = x->cursor_color;
+      x->cursor_xgcv.foreground = fore_pixel;
+
+      if (FRAME_VISIBLE_P (f))
+        {
+          x_update_cursor (f, false);
+          x_update_cursor (f, true);
+        }
     }
+
   update_face_from_frame_parameter (f, Qcursor_color, arg);
-  unblock_input ();
 }
 
 
@@ -1029,11 +1053,11 @@ This function is an internal primitive--use `make-frame' instead.  */)
     FRAME_FOREGROUND_PIXEL (f) = -1;
     FRAME_BACKGROUND_PIXEL (f) = -1;
     FRAME_X_OUTPUT(f)->cursor_color = -1;
+    FRAME_X_OUTPUT(f)->cursor_foreground_color = -1;
 #if 0
-    FRAME_X_OUTPUT(f)->cursor_foreground_pixel = -1;
     FRAME_X_OUTPUT(f)->border_pixel = -1;
-    FRAME_X_OUTPUT(f)->mouse_pixel = -1;
 #endif
+    FRAME_X_OUTPUT(f)->mouse_color = -1;
 
     black = build_string ("black");
     FRAME_FOREGROUND_PIXEL (f)
@@ -1042,14 +1066,14 @@ This function is an internal primitive--use `make-frame' instead.  */)
       = x_decode_color (f, black, BLACK_PIX_DEFAULT (f));
     FRAME_X_OUTPUT(f)->cursor_color
       = x_decode_color (f, black, BLACK_PIX_DEFAULT (f));
-#if 0
-    FRAME_X_OUTPUT(f)->cursor_foreground_pixel
+    FRAME_X_OUTPUT(f)->cursor_foreground_color
       = x_decode_color (f, black, BLACK_PIX_DEFAULT (f));
+#if 0
     FRAME_X_OUTPUT(f)->border_pixel
       = x_decode_color (f, black, BLACK_PIX_DEFAULT (f));
-    FRAME_X_OUTPUT(f)->mouse_pixel
-      = x_decode_color (f, black, BLACK_PIX_DEFAULT (f));
 #endif
+    FRAME_X_OUTPUT(f)->mouse_color
+      = x_decode_color (f, black, BLACK_PIX_DEFAULT (f));
   }
 
   /* Specify the parent under which to make this X window.  */
@@ -2615,6 +2639,10 @@ syms_of_pgtkfns (void)
   DEFSYM (Qicon_title_format, "icon-title-format");
   DEFSYM (Qdark, "dark");
 
+  DEFVAR_LISP ("x-cursor-fore-pixel", Vx_cursor_fore_pixel,
+    doc: /* A string indicating the foreground color of the cursor box.  */);
+  Vx_cursor_fore_pixel = Qnil;
+
   DEFVAR_LISP ("pgtk-icon-type-alist", Vpgtk_icon_type_alist,
                doc: /* Alist of elements (REGEXP . IMAGE) for images of icons associated to frames.
 If the title of a frame matches REGEXP, then IMAGE.tiff is
diff --git a/src/pgtkterm.c b/src/pgtkterm.c
index a1c42eb2748..4f2c4542372 100644
--- a/src/pgtkterm.c
+++ b/src/pgtkterm.c
@@ -765,10 +765,8 @@ x_set_cursor_gc (struct glyph_string *s)
       if (xgcv.foreground == xgcv.background)
         xgcv.foreground = s->face->foreground;
       PGTK_TRACE("x_set_cursor_gc: 4. %08lx, %08lx.", xgcv.background, xgcv.foreground);
-#if 0
       if (xgcv.foreground == xgcv.background)
-        xgcv.foreground = FRAME_X_OUTPUT(s->f)->cursor_foreground_pixel;
-#endif
+        xgcv.foreground = FRAME_X_OUTPUT(s->f)->cursor_foreground_color;
       if (xgcv.foreground == xgcv.background)
         xgcv.foreground = s->face->foreground;
       PGTK_TRACE("x_set_cursor_gc: 5. %08lx, %08lx.", xgcv.background, xgcv.foreground);
diff --git a/src/pgtkterm.h b/src/pgtkterm.h
index c01d846748e..6cd6da4ccb3 100644
--- a/src/pgtkterm.h
+++ b/src/pgtkterm.h
@@ -226,7 +226,6 @@ struct pgtk_output
   void *view;
   void *miniimage;
 #endif
-  unsigned long cursor_color;
   unsigned long foreground_color;
   unsigned long background_color;
   void *toolbar;
@@ -269,6 +268,10 @@ struct pgtk_output
      value contains an ID of the fontset, else -1.  */
   int fontset; /* only used with font_backend */
 
+  unsigned long mouse_color;
+  unsigned long cursor_color;
+  unsigned long cursor_foreground_color;
+
   int icon_top;
   int icon_left;