static cairo_int_status_t
composite_paint (cairo_image_surface_t		*dst,
		 void				*closure,
		 cairo_operator_t		 op,
		 const cairo_pattern_t		*pattern,
		 int				 dst_x,
		 int				 dst_y,
		 const cairo_rectangle_int_t	*extents)
{
    cairo_rectangle_int_t sample;
    pixman_image_t *src;
    int src_x, src_y;

    _cairo_pattern_sampled_area (pattern, extents, &sample);
    src = _pixman_image_for_pattern (dst,
				     pattern, FALSE,
				     extents, &sample,
				     &src_x, &src_y);
    if (unlikely (src == NULL))
	return _cairo_error (CAIRO_STATUS_NO_MEMORY);

    pixman_image_composite32 (_pixman_operator (op),
			      src, NULL, dst->pixman_image,
			      extents->x + src_x, extents->y + src_y,
			      0, 0,
			      extents->x - dst_x, extents->y - dst_y,
			      extents->width, extents->height);

    pixman_image_unref (src);

    return CAIRO_STATUS_SUCCESS;
}
示例#2
0
static cairo_int_status_t
_cairo_image_surface_fill_rectangles (void		      *abstract_surface,
                                      cairo_operator_t	       op,
                                      const cairo_color_t     *color,
                                      cairo_rectangle_int_t   *rects,
                                      int		       num_rects)
{
    cairo_image_surface_t *surface = abstract_surface;

    pixman_color_t pixman_color;
    pixman_rectangle16_t stack_rects[CAIRO_STACK_ARRAY_LENGTH (pixman_rectangle16_t)];
    pixman_rectangle16_t *pixman_rects = stack_rects;
    int i;

    cairo_int_status_t status = CAIRO_STATUS_SUCCESS;

    pixman_color.red   = color->red_short;
    pixman_color.green = color->green_short;
    pixman_color.blue  = color->blue_short;
    pixman_color.alpha = color->alpha_short;

    if (num_rects > ARRAY_LENGTH (stack_rects)) {
        pixman_rects = _cairo_malloc_ab (num_rects, sizeof (pixman_rectangle16_t));
        if (pixman_rects == NULL)
            return _cairo_error (CAIRO_STATUS_NO_MEMORY);
    }

    for (i = 0; i < num_rects; i++) {
        pixman_rects[i].x = rects[i].x;
        pixman_rects[i].y = rects[i].y;
        pixman_rects[i].width = rects[i].width;
        pixman_rects[i].height = rects[i].height;
    }

    /* XXX: pixman_fill_rectangles() should be implemented */
    if (! pixman_image_fill_rectangles (_pixman_operator (op),
                                        surface->pixman_image,
                                        &pixman_color,
                                        num_rects,
                                        pixman_rects)) {
        status = _cairo_error (CAIRO_STATUS_NO_MEMORY);
    }

    //+EAWebKitChange
    //11/10/2011
    if (pixman_rects != stack_rects)
        cairo_free (pixman_rects);
    //-EAWebKitChange

    return status;
}
static cairo_int_status_t
composite_traps (cairo_image_surface_t	*dst,
		 void			*closure,
		 cairo_operator_t	 op,
		 const cairo_pattern_t	*pattern,
		 int			 dst_x,
		 int			 dst_y,
		 const cairo_rectangle_int_t *extents)
{
    composite_traps_info_t *info = closure;
    cairo_rectangle_int_t sample;
    pixman_image_t *src, *mask;
    int src_x, src_y;

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

    _cairo_pattern_sampled_area (pattern, extents, &sample);
    src = _pixman_image_for_pattern (dst, pattern, FALSE,
				     extents, &sample,
				     &src_x, &src_y);
    if (unlikely (src == NULL))
	return _cairo_error (CAIRO_STATUS_NO_MEMORY);

    mask = pixman_image_create_bits (info->antialias == CAIRO_ANTIALIAS_NONE ? PIXMAN_a1 : PIXMAN_a8,
				     extents->width, extents->height,
				     NULL, 0);
    if (unlikely (mask == NULL)) {
	pixman_image_unref (src);
	return _cairo_error (CAIRO_STATUS_NO_MEMORY);
    }

    _pixman_image_add_traps (mask, extents->x, extents->y, &info->traps);
    pixman_image_composite32 (_pixman_operator (op),
                              src, mask, dst->pixman_image,
                              extents->x + src_x - dst_x, extents->y + src_y - dst_y,
                              0, 0,
                              extents->x - dst_x, extents->y - dst_y,
                              extents->width, extents->height);

    pixman_image_unref (mask);
    pixman_image_unref (src);

    return  CAIRO_STATUS_SUCCESS;
}
static cairo_int_status_t
composite_mask (cairo_image_surface_t		*dst,
		void				*closure,
		cairo_operator_t		 op,
		const cairo_pattern_t		*pattern,
		int				 dst_x,
		int				 dst_y,
		const cairo_rectangle_int_t	 *extents)
{
    cairo_rectangle_int_t sample;
    pixman_image_t *src, *mask;
    int src_x, src_y;
    int mask_x, mask_y;

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

    _cairo_pattern_sampled_area (pattern, extents, &sample);
    src = _pixman_image_for_pattern (dst, pattern, FALSE,
				     extents, &sample,
				     &src_x, &src_y);
    if (unlikely (src == NULL))
	return _cairo_error (CAIRO_STATUS_NO_MEMORY);

    _cairo_pattern_sampled_area (closure, extents, &sample);
    mask = _pixman_image_for_pattern (dst, closure, TRUE,
				      extents, &sample,
				      &mask_x, &mask_y);
    if (unlikely (mask == NULL)) {
	pixman_image_unref (src);
	return _cairo_error (CAIRO_STATUS_NO_MEMORY);
    }

    pixman_image_composite32 (_pixman_operator (op),
			      src, mask, dst->pixman_image,
			      extents->x + src_x, extents->y + src_y,
			      extents->x + mask_x, extents->y + mask_y,
			      extents->x - dst_x, extents->y - dst_y,
			      extents->width, extents->height);

    pixman_image_unref (mask);
    pixman_image_unref (src);

    return CAIRO_STATUS_SUCCESS;
}
/* Handles compositing with a clip surface when the operator allows
 * us to combine the clip with the mask
 */
static cairo_status_t
clip_and_composite_with_mask (const cairo_composite_rectangles_t*extents,
			      draw_func_t		 draw_func,
			      void			*draw_closure)
{
    cairo_image_surface_t *dst = (cairo_image_surface_t *)extents->surface;
    cairo_image_surface_t *mask;
    pixman_image_t *src;
    cairo_status_t status = CAIRO_STATUS_SUCCESS;
    int src_x, src_y;

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

    mask = create_composite_mask (dst, draw_closure, draw_func, extents);
    if (unlikely (mask->base.status))
	return mask->base.status;

    src = _pixman_image_for_pattern (dst,
				     &extents->source_pattern.base, FALSE,
				     &extents->bounded,
				     &extents->source_sample_area,
				     &src_x, &src_y);
    if (unlikely (src == NULL)) {
	status = _cairo_error (CAIRO_STATUS_NO_MEMORY);
	goto error;
    }

    pixman_image_composite32 (_pixman_operator (extents->op),
			      src, mask->pixman_image, dst->pixman_image,
			      extents->bounded.x + src_x,
			      extents->bounded.y + src_y,
			      0, 0,
			      extents->bounded.x,      extents->bounded.y,
			      extents->bounded.width,  extents->bounded.height);

    pixman_image_unref (src);
error:
    cairo_surface_destroy (&mask->base);
    return status;
}
static cairo_int_status_t
_cairo_image_surface_fill_rectangles (void			*abstract_surface,
				      cairo_operator_t		op,
				      const cairo_color_t	*color,
				      cairo_rectangle_t		*rects,
				      int			num_rects)
{
    cairo_image_surface_t *surface = abstract_surface;

    pixman_color_t pixman_color;

    pixman_color.red   = color->red_short;
    pixman_color.green = color->green_short;
    pixman_color.blue  = color->blue_short;
    pixman_color.alpha = color->alpha_short;

    /* XXX: The pixman_rectangle_t cast is evil... it needs to go away somehow. */
    pixman_fill_rectangles (_pixman_operator(op), surface->pixman_image,
			    &pixman_color, (pixman_rectangle_t *) rects, num_rects);

    return CAIRO_STATUS_SUCCESS;
}
static cairo_int_status_t
composite_glyphs (cairo_image_surface_t	*dst,
		  void			 *closure,
		  cairo_operator_t	 op,
		  const cairo_pattern_t	*pattern,
		  int			 dst_x,
		  int			 dst_y,
		  const cairo_rectangle_int_t *extents)
{
    cairo_composite_glyphs_info_t *info = closure;
    pixman_image_t *mask;
    cairo_status_t status;
    int i;

    mask = pixman_image_create_bits (PIXMAN_a8,
				     extents->width, extents->height,
				     NULL, 0);
    if (unlikely (mask == NULL))
	return _cairo_error (CAIRO_STATUS_NO_MEMORY);

    status = CAIRO_STATUS_SUCCESS;
    _cairo_scaled_font_freeze_cache (info->font);
    for (i = 0; i < info->num_glyphs; i++) {
	cairo_image_surface_t *glyph_surface;
	cairo_scaled_glyph_t *scaled_glyph;
	unsigned long glyph_index = info->glyphs[i].index;
	int x, y;

	status = _cairo_scaled_glyph_lookup (info->font, glyph_index,
					     CAIRO_SCALED_GLYPH_INFO_SURFACE,
					     &scaled_glyph);

	if (unlikely (status))
	    break;

	glyph_surface = scaled_glyph->surface;
	if (glyph_surface->width && glyph_surface->height) {
	    /* round glyph locations to the nearest pixel */
	    /* XXX: FRAGILE: We're ignoring device_transform scaling here. A bug? */
	    x = _cairo_lround (info->glyphs[i].x -
			       glyph_surface->base.device_transform.x0);
	    y = _cairo_lround (info->glyphs[i].y -
			       glyph_surface->base.device_transform.y0);

	    pixman_image_composite32 (PIXMAN_OP_ADD,
				      glyph_surface->pixman_image, NULL, mask,
				      0, 0,
                                      0, 0,
                                      x - extents->x, y - extents->y,
				      glyph_surface->width,
				      glyph_surface->height);
	}
    }
    _cairo_scaled_font_thaw_cache (info->font);

    if (status == CAIRO_STATUS_SUCCESS) {
	cairo_rectangle_int_t sample;
	pixman_image_t *src;
	int src_x, src_y;

	_cairo_pattern_sampled_area (pattern, extents, &sample);
	src = _pixman_image_for_pattern (dst, pattern, FALSE,
					 extents, &sample,
					 &src_x, &src_y);
	if (src != NULL) {
	    dst_x = extents->x - dst_x;
	    dst_y = extents->y - dst_y;
	    pixman_image_composite32 (_pixman_operator (op),
				      src, mask, dst->pixman_image,
				      src_x + dst_x,  src_y + dst_y,
				      0, 0,
				      dst_x, dst_y,
				      extents->width, extents->height);
	    pixman_image_unref (src);
	} else
	    status = _cairo_error (CAIRO_STATUS_NO_MEMORY);
    }
    pixman_image_unref (mask);

    return status;
}
static cairo_int_status_t
_cairo_image_surface_composite_trapezoids (cairo_operator_t	op,
					   cairo_pattern_t	*pattern,
					   void			*abstract_dst,
					   cairo_antialias_t	antialias,
					   int			src_x,
					   int			src_y,
					   int			dst_x,
					   int			dst_y,
					   unsigned int		width,
					   unsigned int		height,
					   cairo_trapezoid_t	*traps,
					   int			num_traps)
{
    cairo_surface_attributes_t	attributes;
    cairo_image_surface_t	*dst = abstract_dst;
    cairo_image_surface_t	*src;
    cairo_int_status_t		status;
    pixman_image_t		*mask;
    pixman_format_t		*format;
    pixman_bits_t		*mask_data;
    int				mask_stride;
    int				mask_bpp;

    /* Special case adding trapezoids onto a mask surface; we want to avoid
     * creating an intermediate temporary mask unecessarily.
     *
     * We make the assumption here that the portion of the trapezoids
     * contained within the surface is bounded by [dst_x,dst_y,width,height];
     * the Cairo core code passes bounds based on the trapezoid extents.
     *
     * Currently the check surface->has_clip is needed for correct
     * functioning, since pixman_add_trapezoids() doesn't obey the
     * surface clip, which is a libpixman bug , but there's no harm in
     * falling through to the general case when the surface is clipped
     * since libpixman would have to generate an intermediate mask anyways.
     */
    if (op == CAIRO_OPERATOR_ADD &&
	_cairo_pattern_is_opaque_solid (pattern) &&
	_cairo_image_surface_is_alpha_only (dst) &&
	!dst->has_clip &&
	antialias != CAIRO_ANTIALIAS_NONE)
    {
	pixman_add_trapezoids (dst->pixman_image, 0, 0,
			       (pixman_trapezoid_t *) traps, num_traps);
	return CAIRO_STATUS_SUCCESS;
    }

    status = _cairo_pattern_acquire_surface (pattern, &dst->base,
					     src_x, src_y, width, height,
					     (cairo_surface_t **) &src,
					     &attributes);
    if (status)
	return status;

    status = _cairo_image_surface_set_attributes (src, &attributes);
    if (status)
	goto CLEANUP_SOURCE;

    switch (antialias) {
    case CAIRO_ANTIALIAS_NONE:
	format = pixman_format_create (PIXMAN_FORMAT_NAME_A1);
	mask_stride = (width + 31)/8;
	mask_bpp = 1;
 	break;
    default:
	format = pixman_format_create (PIXMAN_FORMAT_NAME_A8);
	mask_stride = (width + 3) & ~3;
	mask_bpp = 8;
 	break;
    }
    if (!format) {
	status = CAIRO_STATUS_NO_MEMORY;
	goto CLEANUP_SOURCE;
    }

    /* The image must be initially transparent */
    mask_data = calloc (1, mask_stride * height);
    if (!mask_data) {
	status = CAIRO_STATUS_NO_MEMORY;
	pixman_format_destroy (format);
	goto CLEANUP_SOURCE;
    }

    mask = pixman_image_create_for_data (mask_data, format, width, height,
					 mask_bpp, mask_stride);
    pixman_format_destroy (format);
    if (!mask) {
	status = CAIRO_STATUS_NO_MEMORY;
	goto CLEANUP_IMAGE_DATA;
    }

    /* XXX: The pixman_trapezoid_t cast is evil and needs to go away
     * somehow. */
    pixman_add_trapezoids (mask, - dst_x, - dst_y,
			   (pixman_trapezoid_t *) traps, num_traps);

    pixman_composite (_pixman_operator (op),
		      src->pixman_image,
		      mask,
		      dst->pixman_image,
		      src_x + attributes.x_offset,
		      src_y + attributes.y_offset,
		      0, 0,
		      dst_x, dst_y,
		      width, height);

    if (!_cairo_operator_bounded_by_mask (op))
	status = _cairo_surface_composite_shape_fixup_unbounded (&dst->base,
								 &attributes, src->width, src->height,
								 width, height,
								 src_x, src_y,
								 0, 0,
								 dst_x, dst_y, width, height);
    pixman_image_destroy (mask);

 CLEANUP_IMAGE_DATA:
    free (mask_data);

 CLEANUP_SOURCE:
    _cairo_pattern_release_surface (pattern, &src->base, &attributes);

    return status;
}
static cairo_int_status_t
_cairo_image_surface_composite (cairo_operator_t	op,
				cairo_pattern_t		*src_pattern,
				cairo_pattern_t		*mask_pattern,
				void			*abstract_dst,
				int			src_x,
				int			src_y,
				int			mask_x,
				int			mask_y,
				int			dst_x,
				int			dst_y,
				unsigned int		width,
				unsigned int		height)
{
    cairo_surface_attributes_t	src_attr, mask_attr;
    cairo_image_surface_t	*dst = abstract_dst;
    cairo_image_surface_t	*src;
    cairo_image_surface_t	*mask;
    cairo_int_status_t		status;

    status = _cairo_pattern_acquire_surfaces (src_pattern, mask_pattern,
					      &dst->base,
					      src_x, src_y,
					      mask_x, mask_y,
					      width, height,
					      (cairo_surface_t **) &src,
					      (cairo_surface_t **) &mask,
					      &src_attr, &mask_attr);
    if (status)
	return status;
    
    status = _cairo_image_surface_set_attributes (src, &src_attr);
    if (status)
      goto CLEANUP_SURFACES;

    if (mask)
    {
	status = _cairo_image_surface_set_attributes (mask, &mask_attr);
	if (status)
	    goto CLEANUP_SURFACES;
	
	pixman_composite (_pixman_operator (op),
			  src->pixman_image,
			  mask->pixman_image,
			  dst->pixman_image,
			  src_x + src_attr.x_offset,
			  src_y + src_attr.y_offset,
			  mask_x + mask_attr.x_offset,
			  mask_y + mask_attr.y_offset,
			  dst_x, dst_y,
			  width, height);
    }
    else
    {
	pixman_composite (_pixman_operator (op),
			  src->pixman_image,
			  NULL,
			  dst->pixman_image,
			  src_x + src_attr.x_offset,
			  src_y + src_attr.y_offset,
			  0, 0,
			  dst_x, dst_y,
			  width, height);
    }
    
    if (!_cairo_operator_bounded_by_source (op))
	status = _cairo_surface_composite_fixup_unbounded (&dst->base,
							   &src_attr, src->width, src->height,
							   mask ? &mask_attr : NULL,
							   mask ? mask->width : 0,
							   mask ? mask->height : 0,
							   src_x, src_y,
							   mask_x, mask_y,
							   dst_x, dst_y, width, height);

 CLEANUP_SURFACES:
    if (mask)
	_cairo_pattern_release_surface (mask_pattern, &mask->base, &mask_attr);
    
    _cairo_pattern_release_surface (src_pattern, &src->base, &src_attr);
    
    return status;
}
示例#10
0
static cairo_int_status_t
_cairo_image_surface_composite_trapezoids (cairo_operator_t	op,
					   cairo_pattern_t	*pattern,
					   void			*abstract_dst,
					   cairo_antialias_t	antialias,
					   int			src_x,
					   int			src_y,
					   int			dst_x,
					   int			dst_y,
					   unsigned int		width,
					   unsigned int		height,
					   cairo_trapezoid_t	*traps,
					   int			num_traps)
{
    cairo_surface_attributes_t	attributes;
    cairo_image_surface_t	*dst = abstract_dst;
    cairo_image_surface_t	*src;
    cairo_int_status_t		status;
    pixman_image_t		*mask;
    pixman_format_code_t	 format;
    uint32_t			*mask_data;
    pixman_trapezoid_t		 stack_traps[CAIRO_STACK_ARRAY_LENGTH (pixman_trapezoid_t)];
    pixman_trapezoid_t		*pixman_traps = stack_traps;
    int				 mask_stride;
    int				 i;

    if (height == 0 || width == 0)
	return CAIRO_STATUS_SUCCESS;

    /* Convert traps to pixman traps */
    if (num_traps > ARRAY_LENGTH (stack_traps)) {
	pixman_traps = _cairo_malloc_ab (num_traps, sizeof (pixman_trapezoid_t));
	if (pixman_traps == NULL)
	    return _cairo_error (CAIRO_STATUS_NO_MEMORY);
    }

    for (i = 0; i < num_traps; i++) {
	pixman_traps[i].top = _cairo_fixed_to_16_16 (traps[i].top);
	pixman_traps[i].bottom = _cairo_fixed_to_16_16 (traps[i].bottom);
	pixman_traps[i].left.p1.x = _cairo_fixed_to_16_16 (traps[i].left.p1.x);
	pixman_traps[i].left.p1.y = _cairo_fixed_to_16_16 (traps[i].left.p1.y);
	pixman_traps[i].left.p2.x = _cairo_fixed_to_16_16 (traps[i].left.p2.x);
	pixman_traps[i].left.p2.y = _cairo_fixed_to_16_16 (traps[i].left.p2.y);
	pixman_traps[i].right.p1.x = _cairo_fixed_to_16_16 (traps[i].right.p1.x);
	pixman_traps[i].right.p1.y = _cairo_fixed_to_16_16 (traps[i].right.p1.y);
	pixman_traps[i].right.p2.x = _cairo_fixed_to_16_16 (traps[i].right.p2.x);
	pixman_traps[i].right.p2.y = _cairo_fixed_to_16_16 (traps[i].right.p2.y);
    }

    /* Special case adding trapezoids onto a mask surface; we want to avoid
     * creating an intermediate temporary mask unnecessarily.
     *
     * We make the assumption here that the portion of the trapezoids
     * contained within the surface is bounded by [dst_x,dst_y,width,height];
     * the Cairo core code passes bounds based on the trapezoid extents.
     *
     * Currently the check surface->has_clip is needed for correct
     * functioning, since pixman_add_trapezoids() doesn't obey the
     * surface clip, which is a libpixman bug , but there's no harm in
     * falling through to the general case when the surface is clipped
     * since libpixman would have to generate an intermediate mask anyways.
     */
    if (op == CAIRO_OPERATOR_ADD &&
	_cairo_pattern_is_opaque_solid (pattern) &&
	dst->base.content == CAIRO_CONTENT_ALPHA &&
	! dst->has_clip &&
	antialias != CAIRO_ANTIALIAS_NONE)
    {
	pixman_add_trapezoids (dst->pixman_image, 0, 0,
			       num_traps, pixman_traps);
	status = CAIRO_STATUS_SUCCESS;
	goto finish;
    }

    status = _cairo_pattern_acquire_surface (pattern, &dst->base,
					     src_x, src_y, width, height,
					     (cairo_surface_t **) &src,
					     &attributes);
    if (status)
	goto finish;

    status = _cairo_image_surface_set_attributes (src, &attributes);
    if (status)
	goto CLEANUP_SOURCE;

    switch (antialias) {
    case CAIRO_ANTIALIAS_NONE:
	format = PIXMAN_a1;
	mask_stride = ((width + 31) / 8) & ~0x03;
	break;
    case CAIRO_ANTIALIAS_GRAY:
    case CAIRO_ANTIALIAS_SUBPIXEL:
    case CAIRO_ANTIALIAS_DEFAULT:
    default:
	format = PIXMAN_a8;
	mask_stride = (width + 3) & ~3;
	break;
    }

    /* The image must be initially transparent */
    mask_data = calloc (mask_stride, height);
    if (mask_data == NULL) {
	status = _cairo_error (CAIRO_STATUS_NO_MEMORY);
	goto CLEANUP_SOURCE;
    }

    mask = pixman_image_create_bits (format, width, height,
				     mask_data, mask_stride);
    if (mask == NULL) {
	status = _cairo_error (CAIRO_STATUS_NO_MEMORY);
	goto CLEANUP_IMAGE_DATA;
    }

    pixman_add_trapezoids (mask, - dst_x, - dst_y,
			   num_traps, pixman_traps);

    pixman_image_composite (_pixman_operator (op),
			    src->pixman_image,
			    mask,
			    dst->pixman_image,
			    src_x + attributes.x_offset,
			    src_y + attributes.y_offset,
			    0, 0,
			    dst_x, dst_y,
			    width, height);

    if (! _cairo_operator_bounded_by_mask (op))
	status = _cairo_surface_composite_shape_fixup_unbounded (&dst->base,
								 &attributes, src->width, src->height,
								 width, height,
								 src_x, src_y,
								 0, 0,
								 dst_x, dst_y, width, height);
    pixman_image_unref (mask);

 CLEANUP_IMAGE_DATA:
    free (mask_data);

 CLEANUP_SOURCE:
    _cairo_pattern_release_surface (pattern, &src->base, &attributes);

 finish:
    if (pixman_traps != stack_traps)
	free (pixman_traps);

    return status;
}