Ejemplos de __cairo_surface_flush en C++ (Cpp)

Ejemplo n.º 1

Archivo: cairo-win32-gdi-compositor.c Proyecto: GuoCheng111/WinCairoRequirements

static cairo_status_t
alpha_blend_boxes (cairo_win32_display_surface_t *dst,
		   const cairo_pattern_t *source,
		   cairo_boxes_t *boxes,
		   uint8_t alpha)
{
    const cairo_surface_pattern_t *pattern;
    struct copy_box cb;
    cairo_surface_t *surface;
    cairo_win32_display_surface_t *src;
    cairo_status_t status;

    TRACE ((stderr, "%s\n", __FUNCTION__));
    if (source->type != CAIRO_PATTERN_TYPE_SURFACE)
	return CAIRO_INT_STATUS_UNSUPPORTED;

    pattern = (const cairo_surface_pattern_t *) source;
    surface = _cairo_surface_get_source (pattern->surface, &cb.limit);
    if (surface->type == CAIRO_SURFACE_TYPE_IMAGE) {
	surface = to_image_surface(surface)->parent;
	if (surface == NULL)
	    return CAIRO_INT_STATUS_UNSUPPORTED;
    }
    if (surface->type != CAIRO_SURFACE_TYPE_WIN32)
	return CAIRO_INT_STATUS_UNSUPPORTED;

    if (! _cairo_matrix_is_integer_translation (&source->matrix,
						&cb.tx, &cb.ty))
	return CAIRO_INT_STATUS_UNSUPPORTED;

    src = to_win32_display_surface (surface);
    cb.dst = dst->win32.dc;
    cb.src = src->win32.dc;

    /* First check that the data is entirely within the image */
    if (! _cairo_boxes_for_each_box (boxes, source_contains_box, &cb))
	return CAIRO_INT_STATUS_UNSUPPORTED;

    status = __cairo_surface_flush (&src->win32.base, 0);
    if (status)
	return status;

    cb.bf.BlendOp = AC_SRC_OVER;
    cb.bf.BlendFlags = 0;
    cb.bf.SourceConstantAlpha = alpha;
    cb.bf.AlphaFormat = (src->win32.format == CAIRO_FORMAT_ARGB32) ? AC_SRC_ALPHA : 0;
    cb.alpha_blend = to_win32_device(dst->win32.base.device)->alpha_blend;

    cb.tx += cb.limit.x;
    cb.ty += cb.limit.y;
    status = CAIRO_STATUS_SUCCESS;
    if (! _cairo_boxes_for_each_box (boxes, alpha_box, &cb))
	status = CAIRO_INT_STATUS_UNSUPPORTED;

    _cairo_win32_display_surface_discard_fallback (dst);
    return status;
}

Ejemplo n.º 2

Archivo: cairo-win32-gdi-compositor.c Proyecto: MiKTeX/miktex

static cairo_status_t
copy_boxes (cairo_win32_display_surface_t *dst,
	    const cairo_pattern_t *source,
	    cairo_boxes_t *boxes)
{
    const cairo_surface_pattern_t *pattern;
    struct copy_box cb;
    cairo_surface_t *surface;
    cairo_status_t status;
    cairo_win32_surface_t *src;

    TRACE ((stderr, "%s\n", __FUNCTION__));

    pattern = (const cairo_surface_pattern_t *) source;
    surface = _cairo_surface_get_source (pattern->surface, &cb.limit);
    if (surface->type == CAIRO_SURFACE_TYPE_IMAGE) {
	surface = to_image_surface(surface)->parent;
	if (surface == NULL)
	    return CAIRO_INT_STATUS_UNSUPPORTED;
    }
    if (surface->type != CAIRO_SURFACE_TYPE_WIN32)
	return CAIRO_INT_STATUS_UNSUPPORTED;

    if (! _cairo_matrix_is_integer_translation (&source->matrix,
						&cb.tx, &cb.ty))
	return CAIRO_INT_STATUS_UNSUPPORTED;

    src = to_win32_surface(surface);

    if (src->format != dst->win32.format &&
	!(src->format == CAIRO_FORMAT_ARGB32 && dst->win32.format == CAIRO_FORMAT_RGB24))
    {
	/* forbid copy different surfaces unless it is from argb32 to
	 * rgb (dropping alpha) */
        return CAIRO_INT_STATUS_UNSUPPORTED;
    }
    cb.dst = dst->win32.dc;
    cb.src = src->dc;

    /* First check that the data is entirely within the image */
    if (! _cairo_boxes_for_each_box (boxes, source_contains_box, &cb))
	return CAIRO_INT_STATUS_UNSUPPORTED;

    status = __cairo_surface_flush (surface, 0);
    if (status)
	return status;

    cb.tx += cb.limit.x;
    cb.ty += cb.limit.y;
    status = CAIRO_STATUS_SUCCESS;
    if (! _cairo_boxes_for_each_box (boxes, copy_box, &cb))
	status = CAIRO_INT_STATUS_UNSUPPORTED;

    _cairo_win32_display_surface_discard_fallback (dst);
    return status;
}