WIP. Scale cover art option. Seems to work

2014-06-14 20:44:03 +02:00
parent 1d67a548c9
commit 9bada5ee2a
92 changed files with 15866 additions and 1890 deletions
@@ -0,0 +1,101 @@
+/*
+    Copyright 2007-2008 Andreas Pokorny
+    Use, modification and distribution are subject to the Boost Software License,
+    Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at
+    http://www.boost.org/LICENSE_1_0.txt).
+*/
+
+/*************************************************************************************************/
+
+
+#ifndef BOOST_GIL_GRAY_ALPHA_HPP_INCLUDED
+#define BOOST_GIL_GRAY_ALPHA_HPP_INCLUDED
+
+////////////////////////////////////////////////////////////////////////////////////////
+/// \file               
+/// \brief
+/// \author Andreas Pokorny \n
+///         
+/// \date   2007-2008 \n
+///
+////////////////////////////////////////////////////////////////////////////////////////
+
+#include <boost/gil/gil_config.hpp>
+#include <boost/mpl/contains.hpp>
+#include <boost/gil/gray.hpp>
+#include <boost/gil/typedefs.hpp>
+
+namespace boost { namespace gil {
+
+typedef mpl::vector2<gray_color_t,alpha_t> gray_alpha_t;
+
+typedef layout<gray_alpha_t> gray_alpha_layout_t;
+typedef layout<gray_alpha_layout_t, mpl::vector2_c<int,1,0> > alpha_gray_layout_t;
+
+GIL_DEFINE_BASE_TYPEDEFS(8,  alpha_gray)
+GIL_DEFINE_BASE_TYPEDEFS(8s, alpha_gray)
+GIL_DEFINE_BASE_TYPEDEFS(16, alpha_gray)
+GIL_DEFINE_BASE_TYPEDEFS(16s,alpha_gray)
+GIL_DEFINE_BASE_TYPEDEFS(32 ,alpha_gray)
+GIL_DEFINE_BASE_TYPEDEFS(32s,alpha_gray)
+GIL_DEFINE_BASE_TYPEDEFS(32f,alpha_gray)
+
+GIL_DEFINE_ALL_TYPEDEFS(8,  gray_alpha)
+GIL_DEFINE_ALL_TYPEDEFS(8s, gray_alpha)
+GIL_DEFINE_ALL_TYPEDEFS(16, gray_alpha)
+GIL_DEFINE_ALL_TYPEDEFS(16s,gray_alpha)
+GIL_DEFINE_ALL_TYPEDEFS(32 ,gray_alpha)
+GIL_DEFINE_ALL_TYPEDEFS(32s,gray_alpha)
+GIL_DEFINE_ALL_TYPEDEFS(32f,gray_alpha)
+
+/// \ingroup ColorConvert
+/// \brief Gray Alpha to RGBA
+template <>
+struct default_color_converter_impl<gray_alpha_t,rgba_t> {
+    template <typename P1, typename P2>
+    void operator()(const P1& src, P2& dst) const {
+        get_color(dst,red_t())  =
+            channel_convert<typename color_element_type<P2, red_t>::type>(get_color(src,gray_color_t()));
+        get_color(dst,green_t())=
+            channel_convert<typename color_element_type<P2, green_t>::type>(get_color(src,gray_color_t()));
+        get_color(dst,blue_t()) =
+            channel_convert<typename color_element_type<P2, blue_t>::type>(get_color(src,gray_color_t()));
+        get_color(dst,alpha_t()) =
+            channel_convert<typename color_element_type<P2, alpha_t>::type>(get_color(src,alpha_t()));
+    }
+};
+
+template <>
+struct default_color_converter_impl<gray_alpha_t,rgb_t> {
+    template <typename P1, typename P2>
+    void operator()(const P1& src, P2& dst) const {
+        get_color(dst,red_t())  =
+            channel_convert<typename color_element_type<P2, red_t>::type>(
+                channel_multiply(get_color(src,gray_color_t()),get_color(src,alpha_t()) ) 
+                );
+        get_color(dst,green_t())  =
+            channel_convert<typename color_element_type<P2, green_t>::type>(
+                channel_multiply(get_color(src,gray_color_t()),get_color(src,alpha_t()) ) 
+                );
+        get_color(dst,blue_t())  =
+            channel_convert<typename color_element_type<P2, blue_t>::type>(
+                channel_multiply(get_color(src,gray_color_t()),get_color(src,alpha_t()) ) 
+                );
+    }
+};
+
+template <>
+struct default_color_converter_impl<gray_alpha_t,gray_t> {
+    template <typename P1, typename P2>
+    void operator()(const P1& src, P2& dst) const {
+        get_color(dst,gray_color_t())  =
+            channel_convert<typename color_element_type<P2, gray_color_t>::type>(
+                channel_multiply(get_color(src,gray_color_t()),get_color(src,alpha_t()) ) 
+                );
+    }
+};
+
+} // gil
+} // boost
+
+#endif // BOOST_GIL_GRAY_ALPHA_HPP_INCLUDED