add rendercolor class, with a cache of gcs for the colors

1 files changed, 45 insertions, 0 deletions

diff --git a/otk/rendercolor.hh b/otk/rendercolor.hh
new file mode 100644
index 00000000..fbfe2aef
--- /dev/null
+++ b/otk/rendercolor.hh
@@ -0,0 +1,45 @@
+// -*- mode: C++; indent-tabs-mode: nil; c-basic-offset: 2; -*-
+#ifndef __rendercolor_hh
+#define __rendercolor_hh
+
+extern "C" {
+#include <X11/Xlib.h>
+}
+
+#include <map>
+
+namespace otk {
+
+class RenderColor {
+  struct CacheItem {
+    GC gc;
+    int count;
+    CacheItem(GC g) : gc(g), count(0) {}
+  };
+  static std::map<unsigned long, CacheItem*> *_cache;
+
+  int _screen;
+  unsigned char _red;
+  unsigned char _green;
+  unsigned char _blue;
+
+  GC _gc;
+
+public:
+  static void initialize();
+  static void destroy();
+  
+  RenderColor(int screen, unsigned char red,
+	      unsigned char green, unsigned char blue);
+  virtual ~RenderColor();
+
+  inline int screen() const { return _screen; }
+  inline unsigned char red() const { return _red; }
+  inline unsigned char green() const { return _green; }
+  inline unsigned char blue() const { return _blue; }
+  inline GC gc() const { return _gc; }
+};
+
+}
+
+#endif // __rendercolor_hh