X-Git-Url: https://git.pterodactylus.net/?a=blobdiff_plain;f=synfig-core%2Ftags%2Fsynfig_0_61_07_rc2%2Fsrc%2Fsynfig%2Fsurface.h;fp=synfig-core%2Ftags%2Fsynfig_0_61_07_rc2%2Fsrc%2Fsynfig%2Fsurface.h;h=265d8d7955e9f75ea832da2e79240d7fce482d27;hb=3078b7103aa069392b711486dbc1eaf6d4804acc;hp=0000000000000000000000000000000000000000;hpb=1d8dc189e3174b7e3c28c865828aecc6bee6d8a3;p=synfig.git

diff --git a/synfig-core/tags/synfig_0_61_07_rc2/src/synfig/surface.h b/synfig-core/tags/synfig_0_61_07_rc2/src/synfig/surface.h
new file mode 100644
index 0000000..265d8d7
--- /dev/null
+++ b/synfig-core/tags/synfig_0_61_07_rc2/src/synfig/surface.h
@@ -0,0 +1,159 @@
+/* === S Y N F I G ========================================================= */
+/*!	\file surface.h
+**	\brief Surface and Pen Definitions
+**
+**	$Id$
+**
+**	\legal
+**	Copyright (c) 2002-2005 Robert B. Quattlebaum Jr., Adrian Bentley
+**
+**	This package is free software; you can redistribute it and/or
+**	modify it under the terms of the GNU General Public License as
+**	published by the Free Software Foundation; either version 2 of
+**	the License, or (at your option) any later version.
+**
+**	This package is distributed in the hope that it will be useful,
+**	but WITHOUT ANY WARRANTY; without even the implied warranty of
+**	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+**	General Public License for more details.
+**	\endlegal
+*/
+/* ========================================================================= */
+
+/* === S T A R T =========================================================== */
+
+#ifndef __SYNFIG_SURFACE_H
+#define __SYNFIG_SURFACE_H
+
+/* === H E A D E R S ======================================================= */
+
+#include "color.h"
+#include "renddesc.h"
+#include <ETL/pen>
+#include <ETL/surface>
+#include <ETL/handle>
+
+/* === M A C R O S ========================================================= */
+
+/* === T Y P E D E F S ===================================================== */
+
+/* === C L A S S E S & S T R U C T S ======================================= */
+
+namespace synfig {
+
+class Target;
+class Target_Scanline;
+
+class ColorPrep
+{
+public:
+	ColorAccumulator cook(Color x)const
+	{
+		x.set_r(x.get_r()*x.get_a());
+		x.set_g(x.get_g()*x.get_a());
+		x.set_b(x.get_b()*x.get_a());
+		return x;
+	}
+	Color uncook(ColorAccumulator x)const
+	{
+		if(!x.get_a())
+			return Color::alpha();
+
+		const float a(1.0f/x.get_a());
+
+		x.set_r(x.get_r()*a);
+		x.set_g(x.get_g()*a);
+		x.set_b(x.get_b()*a);
+		return x;
+	}
+};
+
+/*!	\class Surface
+**	\brief Bitmap Surface
+**	\todo writeme
+*/
+class Surface : public etl::surface<Color, ColorAccumulator, ColorPrep>
+{
+public:
+	typedef Color value_type;
+	class alpha_pen;
+
+	Surface() { }
+
+	Surface(const size_type::value_type &w, const size_type::value_type &h):
+		etl::surface<Color, ColorAccumulator,ColorPrep>(w,h) { }
+
+	Surface(const size_type &s):
+		etl::surface<Color, ColorAccumulator,ColorPrep>(s) { }
+
+	template <typename _pen>
+	Surface(const _pen &_begin, const _pen &_end):
+		etl::surface<Color, ColorAccumulator,ColorPrep>(_begin,_end) { }
+
+	template <class _pen> void blit_to(_pen &pen)
+	{ return blit_to(pen,0,0, get_w(),get_h()); }
+
+	template <class _pen> void
+	blit_to(_pen& DEST_PEN,	int x, int y, int w, int h)
+	{
+		etl::surface<Color, ColorAccumulator, ColorPrep>::blit_to(DEST_PEN,x,y,w,h);
+	}
+
+	void clear();
+
+	void blit_to(alpha_pen& DEST_PEN, int x, int y, int w, int h);
+};	// END of class Surface
+
+#ifndef DOXYGEN_SKIP
+
+/*! \internal Used by Pen_Alpha */
+struct _BlendFunc
+{
+	Color::BlendMethod blend_method;
+
+	_BlendFunc(Color::BlendMethod b= Color::BLEND_COMPOSITE):blend_method(b) { }
+
+	Color operator()(const Color &a,const Color &b,const Color::value_type &t)const
+	{
+		return Color::blend(b,a,t,blend_method);
+	}
+};	// END of class _BlendFunc
+
+#endif
+
+/*!	\class Surface::alpha_pen
+**	\brief Alpha-Blending Pen
+**
+**	This pen works like a normal alpha pen, except that it supports
+**	a variety of blending methods. Use set_blend_method() to select
+**	which blending method you want to use.
+**	The default blending method is Color::BLEND_COMPOSITE.
+**	\see Color::BlendMethod
+*/
+class Surface::alpha_pen : public etl::alpha_pen< etl::generic_pen<Color, ColorAccumulator>, Color::value_type, _BlendFunc >
+{
+public:
+	alpha_pen() { }
+	alpha_pen(const etl::alpha_pen< etl::generic_pen<Color, ColorAccumulator>, Color::value_type, _BlendFunc > &x):
+		etl::alpha_pen< etl::generic_pen<Color, ColorAccumulator>, Color::value_type, _BlendFunc >(x)
+	{ }
+
+	alpha_pen(const etl::generic_pen<Color, ColorAccumulator>& pen, const Color::value_type &a = 1, const _BlendFunc &func = _BlendFunc()):
+		etl::alpha_pen< etl::generic_pen<Color, ColorAccumulator>, Color::value_type, _BlendFunc >(pen,a,func)
+	{ }
+
+	//! Sets the blend method to that described by \a method
+	void set_blend_method(Color::BlendMethod method) { affine_func_.blend_method=method; }
+
+	//! Returns the blend method being used for this pen
+	Color::BlendMethod get_blend_method()const { return affine_func_.blend_method; }
+};	// END of class Surface::alpha_pen
+
+//! Creates a target that will render to \a surface
+etl::handle<Target_Scanline> surface_target(Surface *surface);
+
+}; // END of namespace synfig
+
+/* === E N D =============================================================== */
+
+#endif