adding toolkit beginnings

1 files changed, 106 insertions, 0 deletions

diff --git a/otk/color.hh b/otk/color.hh
new file mode 100644
index 00000000..5f3cb955
--- /dev/null
+++ b/otk/color.hh
@@ -0,0 +1,106 @@
+// -*- mode: C++; indent-tabs-mode: nil; c-basic-offset: 2; -*-
+#ifndef COLOR_HH
+#define COLOR_HH
+
+extern "C" {
+#include <X11/Xlib.h>
+}
+
+#include <map>
+#include <string>
+
+class BaseDisplay;
+
+class BColor {
+public:
+  BColor(const BaseDisplay * const _display = 0, unsigned int _screen = ~(0u));
+  BColor(int _r, int _g, int _b,
+         const BaseDisplay * const _display, unsigned int _screen = ~(0u));
+  BColor(const std::string &_name,
+         const BaseDisplay * const _display, unsigned int _screen = ~(0u));
+  ~BColor(void);
+
+  inline const std::string &name(void) const { return colorname; }
+
+  inline int   red(void) const { return r; }
+  inline int green(void) const { return g; }
+  inline int  blue(void) const { return b; }
+  void setRGB(int _r, int _g, int _b) {
+    deallocate();
+    r = _r;
+    g = _g;
+    b = _b;
+  }
+
+  inline const BaseDisplay *display(void) const { return dpy; }
+  inline unsigned int screen(void) const { return scrn; }
+  void setDisplay(const BaseDisplay * const _display,
+                  unsigned int _screen = ~(0u));
+
+  inline bool isAllocated(void) const { return allocated; }
+
+  inline bool isValid(void) const { return r != -1 && g != -1 && b != -1; }
+
+  unsigned long pixel(void) const;
+
+  // operators
+  BColor &operator=(const BColor &c);
+  inline bool operator==(const BColor &c) const
+  { return (r == c.r && b == c.b && b == c.b); }
+  inline bool operator!=(const BColor &c) const
+  { return (! operator==(c)); }
+
+  static void cleanupColorCache(void);
+
+private:
+  void parseColorName(void);
+  void allocate(void);
+  void deallocate(void);
+
+  bool allocated;
+  int r, g, b;
+  unsigned long p;
+  const BaseDisplay *dpy;
+  unsigned int scrn;
+  std::string colorname;
+
+  // global color allocator/deallocator
+  struct RGB {
+    const BaseDisplay* const display;
+    const unsigned int screen;
+    const int r, g, b;
+
+    RGB(void) : display(0), screen(~(0u)), r(-1), g(-1), b(-1) { }
+    RGB(const BaseDisplay * const a, const unsigned int b,
+        const int x, const int y, const int z)
+      : display(a), screen(b), r(x), g(y), b(z) {}
+    RGB(const RGB &x)
+      : display(x.display), screen(x.screen), r(x.r), g(x.g), b(x.b) {}
+
+    inline bool operator==(const RGB &x) const {
+      return display == x.display &&
+              screen == x.screen &&
+                   r == x.r && g == x.g && b == x.b;
+    }
+
+    inline bool operator<(const RGB &x) const {
+      unsigned long p1, p2;
+      p1 = (screen << 24 | r << 16 | g << 8 | b) & 0x00ffffff;
+      p2 = (x.screen << 24 | x.r << 16 | x.g << 8 | x.b) & 0x00ffffff;
+      return p1 < p2;
+    }
+  };
+  struct PixelRef {
+    const unsigned long p;
+    unsigned int count;
+    inline PixelRef(void) : p(0), count(0) { }
+    inline PixelRef(const unsigned long x) : p(x), count(1) { }
+  };
+  typedef std::map<RGB,PixelRef> ColorCache;
+  typedef ColorCache::value_type ColorCacheItem;
+  static ColorCache colorcache;
+  static bool cleancache;
+  static void doCacheCleanup(void);
+};
+
+#endif // COLOR_HH