+++ /dev/null
-/* === 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
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