aliceml_backend.h

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/*
 * Copyright (c) 2005-2008  cielacanth <cielacanth AT s60.xrea.com>
 * All rights reserved.
 * 
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *    1. Redistributions of source code must retain the above copyright
 *       notice, this list of conditions and the following disclaimer.
 *    2. Redistributions in binary form must reproduce the above copyright
 *       notice, this list of conditions and the following disclaimer in the
 *       documentation and/or other materials provided with the distribution.
 * 
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 */

#ifndef __ALICEML_BACKEND_H__
#define __ALICEML_BACKEND_H__

#include "aliceml.h"
#include "aliceml_rect.h"
#include "aliceml_font.h"

#ifdef __cplusplus
extern "C" {
#endif

struct ML_Backend {
    void * (ALICEMLCALL *CreateSurface)(ML_Message *message,
                                        int width, int height);

    void (ALICEMLCALL *DestroySurface)(void *surface);

    int (ALICEMLCALL *GetSurfaceSize)(void *surface, int *width, int *height);

    int (ALICEMLCALL *BlitSurface)(void *dst, int dst_x, int dst_y,
                                   void *src, ML_Rect *src_rect);

    int (ALICEMLCALL *BlitSurfaceAlpha)(void *dst, int dst_x, int dst_y,
                                        void *src, ML_Rect *src_rect,
                                        ML_uint8 alpha);

    void * (ALICEMLCALL *CreateFont)(ML_Message *message,
                                     const ML_SimpleFont *font);

    void (ALICEMLCALL *DestroyFont)(ML_Message *message, void *abstract_font);

    void * (ALICEMLCALL *CreateTextSurface)(ML_Message *message,
                                            const ML_SimpleFont *font,
                                            ML_char32 ucs4);

    int (ALICEMLCALL *GetGlyphMetrics)(ML_Message *message,
                                       const ML_SimpleFont *font,
                                       ML_char32 ucs4,
                                       ML_GlyphMetrics *metrics);
};

ALICEMLAPI void * ALICEMLCALL
ML_Backend_CreateSurface(ML_Message *message, int width, int height);

ALICEMLAPI void ALICEMLCALL
ML_Backend_DestroySurface(ML_Backend *backend, void *surface);

ALICEMLAPI int ALICEMLCALL
ML_Backend_GetSurfaceSize(ML_Backend *backend, void *surface,
                          int *width, int *height);

ALICEMLAPI int ALICEMLCALL
ML_Backend_Blit(ML_Backend *backend, void *dst, int dst_x, int dst_y,
                void *src, ML_Rect *src_rect);

ALICEMLAPI int ALICEMLCALL
ML_Backend_BlitAlpha(ML_Backend *backend, void *dst, int dst_x, int dst_y,
                     void *src, ML_Rect *src_rect, ML_uint8 alpha);

ALICEMLAPI void * ALICEMLCALL
ML_Backend_CreateFont(ML_Message *message, const ML_Font *font);

ALICEMLAPI void ALICEMLCALL
ML_Backend_DestroyFont(ML_Message *message, void *abstract_font);

ALICEMLAPI void * ALICEMLCALL
ML_Backend_CreateTextSurface(ML_Message *message, const ML_Font *font,
                             ML_char32 ucs4);

ALICEMLAPI int ALICEMLCALL
ML_Backend_GetGlyphMetrics(ML_Message *message, const ML_Font *font,
                           ML_char32 ucs4, ML_GlyphMetrics *metrics);

#ifdef __cplusplus
}
#endif

#endif

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