Put a default implementation of parse_color() in Fl_Screen_Driver and only Fl_X11_Screen_Driver reimplements it.

git-svn-id: file:///fltk/svn/fltk/branches/branch-1.4@12628 ea41ed52-d2ee-0310-a9c1-e6b18d33e121

1 files changed, 25 insertions, 0 deletions

diff --git a/src/Fl_Screen_Driver.cxx b/src/Fl_Screen_Driver.cxx
index 822500a42..5c537ef14 100644
--- a/src/Fl_Screen_Driver.cxx
+++ b/src/Fl_Screen_Driver.cxx
@@ -495,6 +495,31 @@ void Fl_Screen_Driver::open_display()
   }
 }
 
+
+// simulation of XParseColor:
+int Fl_Screen_Driver::parse_color(const char* p, uchar& r, uchar& g, uchar& b)
+{
+  if (*p == '#') p++;
+  size_t n = strlen(p);
+  size_t m = n/3;
+  const char *pattern = 0;
+  switch(m) {
+    case 1: pattern = "%1x%1x%1x"; break;
+    case 2: pattern = "%2x%2x%2x"; break;
+    case 3: pattern = "%3x%3x%3x"; break;
+    case 4: pattern = "%4x%4x%4x"; break;
+    default: return 0;
+  }
+  int R,G,B; if (sscanf(p,pattern,&R,&G,&B) != 3) return 0;
+  switch(m) {
+    case 1: R *= 0x11; G *= 0x11; B *= 0x11; break;
+    case 3: R >>= 4; G >>= 4; B >>= 4; break;
+    case 4: R >>= 8; G >>= 8; B >>= 8; break;
+  }
+  r = (uchar)R; g = (uchar)G; b = (uchar)B;
+  return 1;
+}
+
 //
 // End of "$Id$".
 //