/* context_wl.c - Wayland-mode RContext creation
 *
 * Raster graphics library
 *
 * Copyright (c) 2025 Window Maker Team
 *
 *  This library is free software; you can redistribute it and/or
 *  modify it under the terms of the GNU Library General Public
 *  License as published by the Free Software Foundation; either
 *  version 2 of the License, or (at your option) any later version.
 *
 *  This library 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
 *  Library General Public License for more details.
 */

/*
 * Wayland-side of the wraster context API.
 *
 * RCreateContextWayland creates a minimal RContext suitable for
 * RImage operations (load, scale, combine, gradient) without an X11
 * connection.  No XOpenDisplay, no XCreateGC — the convert_image
 * vtable is wired to wl_convert_image (pixman_image_t output).
 *
 * Compiled unconditionally (lives in libwraster regardless of
 * --enable-x11-wraster) since it has no X11 dependencies.
 *
 * RDestroyContext is in context.c when X11 wraster is enabled, and
 * stubbed (free-only) in wstubs_no_x11.c otherwise.
 */

#define WRASTER_NO_XLIB

#include <config.h>

#include <stdlib.h>
#include <string.h>

#include "wraster.h"
#include "convert_funcs.h"

/* TrueColor visual class constant (matches X.h definition).  Used by
 * convert/draw paths to select the TrueColor branch.  We hard-code it
 * here so we don't need <X11/X.h> when X11 wraster is disabled. */
#ifndef TrueColor
# define TrueColor 4
#endif

RContext *RCreateContextWayland(int width, int height,
                                const RContextAttributes *attribs)
{
    RContext *context;
    RContextAttributes *attr;

    context = malloc(sizeof(RContext));
    if (!context) {
        RErrorCode = RERR_NOMEMORY;
        return NULL;
    }
    memset(context, 0, sizeof(RContext));

    attr = malloc(sizeof(RContextAttributes));
    if (!attr) {
        free(context);
        RErrorCode = RERR_NOMEMORY;
        return NULL;
    }
    if (attribs)
        *attr = *attribs;
    else
        memset(attr, 0, sizeof(RContextAttributes));

    context->attribs = attr;

    /* 32-bit ARGB TrueColor — matches pixman ARGB32. */
    context->depth = 32;
    context->vclass = TrueColor;
    context->red_offset = 16;
    context->green_offset = 8;
    context->blue_offset = 0;
    context->black = 0xFF000000;
    context->white = 0xFFFFFFFF;

    (void)width;
    (void)height;

    context->convert_image = wl_convert_image;
    context->convert_image_mask = wl_convert_image_mask;

    return context;
}