from rob browning

git-svn-id: svn+ssh://svn.gnucash.org/repo/gnucash/trunk@833 57a11ea4-9604-0410-9ed3-97b8803252fd

src/gnome/graph/colors.c

@@ -0,0 +1,98 @@
+#include <colors.h>
+
+/* Is this approach OK for multi-headed displays, etc.? i.e. where
+   different windows in the app might have different visuals?
+   Probably not. */
+
+static GdkColorContext *color_context = NULL;
+
+static int
+colors_init(static GtkWidget *main_window) {
+
+  if(!color_context) {
+    gint n;
+    
+    color_context =
+      gdk_color_context_new(gtk_widget_get_visual(main_window),
+                            gtk_widget_get_colormap(main_window));
+    assert(color_context);
+    
+    color_split_row.pixel = 0; /* this is important! */
+    color_split_row.red = 44730;
+    color_split_row.green = 53052;
+    color_split_row.blue = 65535;
+
+    n = 0; /* this is important! */
+    
+    gdk_color_context_get_pixels (color_context,
+                                  &color_split_row.red,
+                                  &color_split_row.green,
+                                  &color_split_row.blue,
+                                  1, &color_split_row.pixel, &n);
+    
+    assert(n == 1);
+
+
+    assert(gdk_color_parse("black", &color_black) != 0);
+    color_black.pixel = 0; /* this is important! */
+    n = 0; /* this is important! */
+    
+    gdk_color_context_get_pixels (color_context,
+                                  &color_black.red,
+                                  &color_black.green,
+                                  &color_black.blue,
+                                  1, &color_black.pixel, &n);
+    
+    assert(n == 1);
+
+
+    assert(gdk_color_parse("red", &color_red) != 0);
+    color_red.pixel = 0; /* this is important! */
+    n = 0; /* this is important! */
+    
+    gdk_color_context_get_pixels (color_context,
+                                  &color_red.red,
+                                  &color_red.green,
+                                  &color_red.blue,
+                                  1, &color_red.pixel, &n);
+    
+    assert(n == 1);
+
+
+    /*assert(gdk_color_parse("#", &color_split_row) != 0);*/
+    
+    /*main_row_color.red = 65000;
+      main_row_color.green = 65000;
+      main_row_color.blue = 65000;*/
+    
+    /*main_row_color.pixel = gdk_color_context_get_pixel(color_context,
+      main_row_color.red,
+      main_row_color.green,
+      main_row_color.blue,
+      &failure);
+      assert(!failure); */
+    
+    /*
+
+    color_context =
+      gdk_color_context_new(gtk_widget_get_visual(main_window),
+                            gtk_widget_get_colormap(main_window));
+
+
+      color_split_row.red = 44730 >> 8;
+      color_split_row.green = 53052 >> 8;
+      color_split_row.blue = 65535 >> 8;
+      
+      color_split_row.red = 44730;
+      color_split_row.green = 53052;
+      color_split_row.blue = 65535;
+      
+      color_split_row.pixel = gdk_color_context_get_pixel(color_context,
+      color_split_row.red,
+      color_split_row.green,
+      color_split_row.blue,
+      &failure);
+    */
+  }
+  return(0);
+}