remove GdkColormap (causes coloring issue!)

This removes the legacy data type and functions but causes drawing issues:
The different colors vanish and are sort of black-ish, but still
readable.

But in other code I have seen, the colormap was just deleted and the
rest around it was kept.
Like here: https://mail.gnome.org/archives/commits-list/2010-December/msg06118.html

-	colormap = gtk_widget_get_colormap (GTK_WIDGET (day_view));
-	if (gdk_colormap_alloc_color (colormap, &bg_color, TRUE, TRUE)) {
-		gdk_cairo_set_source_color (cr, &bg_color);
-	}
+	gdk_cairo_set_source_color (cr, &bg_color);

I am lacking something like the set_source_color function though, but I
think it is better to have some sort-of working code without legacy
functions than doing workarounds in gtk2 at the moment.

Ah, and I chose to ignore the win32 code, because who cares.

src/krell.c

@@ -1787,13 +1787,9 @@ gkrellm_make_overlay_button(GkrellmPanel *p, void (*func)(), void *data,
 	else	/* Make a default frame. */
 		{
 		GdkColor	gray0, gray1;
-		GdkColormap	*cmap;
 
-		cmap = gdk_colormap_get_system();
 		gdk_color_parse("gray65", &gray0);
 		gdk_color_parse("gray100", &gray1);
-		gdk_colormap_alloc_color(cmap, &gray0, FALSE, TRUE);
-		gdk_colormap_alloc_color(cmap, &gray1, FALSE, TRUE);
 
 		gdk_gc_set_foreground(_GK.draw1_GC, &gray1);
 		gdk_draw_line(pixmap, _GK.draw1_GC, 0, 0, w - 1, 0);		
@@ -1810,9 +1806,6 @@ gkrellm_make_overlay_button(GkrellmPanel *p, void (*func)(), void *data,
 		gdk_draw_rectangle(mask, _GK.bit1_GC, TRUE, 0, 0, w, 2 * h);		
 		gdk_draw_rectangle(mask, _GK.bit0_GC, TRUE, 1, 1, w - 2, h - 2);
 		gdk_draw_rectangle(mask, _GK.bit0_GC, TRUE, 1, h + 1, w - 2, h - 2);
-
-		gdk_colormap_free_colors(cmap, &gray0, 1);
-		gdk_colormap_free_colors(cmap, &gray1, 1);
 		}
 
 	d = gkrellm_create_decal_pixmap(p, pixmap, mask, 2, NULL, x, y);

src/main.c

@@ -180,16 +180,10 @@ setup_fonts()
 void
 gkrellm_map_color_string(gchar *color_string, GdkColor *color)
 	{
-	static GdkColormap	*colormap;
-
-	if (colormap == NULL)
-		colormap = gtk_widget_get_colormap(top_window);
-	if (color->red || color->green || color->blue)
-		gdk_colormap_free_colors(colormap, color, 1);
 	if (!color_string)
 		color_string = "black";
+
 	gdk_color_parse(color_string, color);
-	gdk_colormap_alloc_color(colormap, color, FALSE, TRUE);
 	}
 
 static void
@@ -248,6 +242,25 @@ setup_colors()
 		bit_color.pixel = 0;
 		gdk_gc_set_foreground(_GK.bit0_GC, &bit_color);
 		g_object_unref(G_OBJECT(dummy_bitmap));
+/*
+
+		// TODO: use GdkRGBA bit_color; but what is replacing GdkColor.pixel??
+		GdkColor        bit_color;
+		GdkWindow *window = gtk_widget_get_window(top_window);
+		int width = 16;
+		int height = 16;
+
+		cairo_content_t content = cairo_surface_get_content (window);
+
+		_GK.bit0_GC = gdk_window_create_similar_surface (window, content, width, height);
+		bit_color.pixel = 1;
+                gdk_gc_set_foreground(_GK.bit1_GC, &bit_color);
+
+		_GK.bit0_GC = gdk_window_create_similar_surface (window, content, width, height);
+		bit_color.pixel = 0;
+                gdk_gc_set_foreground(_GK.bit0_GC, &bit_color);
+
+*/
 		}
 	}