mirror of https://github.com/odrling/Aegisub
118 lines
4.6 KiB
C++
118 lines
4.6 KiB
C++
/*
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* Copyright (c) 2007, ai-chan
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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* * Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* * Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* * Neither the name of the ASSDraw3 Team nor the
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* names of its contributors may be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY AI-CHAN ``AS IS'' AND ANY
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* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL AI-CHAN BE LIABLE FOR ANY
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* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
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* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifndef WX_AGG_PIXEL_FORMAT_CONVERTOR_H
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#define WX_AGG_PIXEL_FORMAT_CONVERTOR_H
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#include "agg_pixfmt_rgb.h"
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#include "agg_pixfmt_rgba.h"
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namespace {
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/// Given a particular combination of channel type, bits per pixel and
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/// channel indices, return the AGG format that matches.
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/// The actual template specializations that follow give the actual types,
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/// and using a combination of parameters that are not listed will give
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/// a compile-time error.
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template <typename Channel, int bitsPerPixel, int r, int g, int b, int a>
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struct wxWidgetsToAGGHelper {
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//empty
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};
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/// 24-bit RGB
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template <> struct wxWidgetsToAGGHelper<unsigned char, 24, 0, 1, 2, -1> {
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typedef agg::pixfmt_rgb24 format;
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};
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/// 24-bit BGR
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template <> struct wxWidgetsToAGGHelper<unsigned char, 24, 2, 1, 0, -1> {
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typedef agg::pixfmt_bgr24 format;
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};
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/// 32-bit RGB, alpha unused but stored as ARGB.
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template <> struct wxWidgetsToAGGHelper<unsigned char, 32, 1, 2, 3, -1> {
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typedef agg::pixfmt_argb32 format;
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};
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/// 32-bit RGB, alpha unused but stored as RGBA.
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template <> struct wxWidgetsToAGGHelper<unsigned char, 32, 0, 1, 2, -1> {
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typedef agg::pixfmt_rgba32 format;
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};
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/// 32-bit BGR, alpha unused but stored as ABGR.
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template <> struct wxWidgetsToAGGHelper<unsigned char, 32, 3, 2, 1, -1> {
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typedef agg::pixfmt_abgr32 format;
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};
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/// 32-bit BGR, alpha unused but stored as BGRA.
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template <> struct wxWidgetsToAGGHelper<unsigned char, 32, 2, 1, 0, -1> {
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typedef agg::pixfmt_bgra32 format;
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};
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/// 32-bit RGBA
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template <> struct wxWidgetsToAGGHelper<unsigned char, 32, 0, 1, 2, 3> {
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typedef agg::pixfmt_rgba32 format;
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};
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/// 32-bit BGRA
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template <> struct wxWidgetsToAGGHelper<unsigned char, 32, 2, 1, 0, 3> {
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typedef agg::pixfmt_bgra32 format;
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};
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/// 32-bit ARGB
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template <> struct wxWidgetsToAGGHelper<unsigned char, 32, 1, 2, 3, 0> {
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typedef agg::pixfmt_argb32 format;
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};
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/// 32-bit ABGR
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template <> struct wxWidgetsToAGGHelper<unsigned char, 32, 3, 2, 1, 0> {
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typedef agg::pixfmt_abgr32 format;
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};
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}
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namespace GUI {
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/// Convert between a wxWidgets pixel format class and an AGG pixel format class.
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/// Usage examples:
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/// PixelFormatConvertor<wxNativePixelFormat>::AGGType or
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/// PixelFormatConvertor<wxAlphaPixelFormat>::AGGType.
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template <typename wxWidgetsPixelFormat>
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class PixelFormatConvertor {
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public:
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typedef wxWidgetsPixelFormat wxWidgetsType;
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// Break out the wxWidgets parameters and feed to the helper class.
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typedef typename wxWidgetsToAGGHelper<typename wxWidgetsPixelFormat::ChannelType,
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wxWidgetsPixelFormat::BitsPerPixel,
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wxWidgetsPixelFormat::RED,
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wxWidgetsPixelFormat::GREEN,
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wxWidgetsPixelFormat::BLUE,
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wxWidgetsPixelFormat::ALPHA>::format AGGType;
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};
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}
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#endif
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