mirror of
https://gitlab.freedesktop.org/cairo/cairo.git
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Add mask support and switch to SVG 1.2 for compositing operators.
return xml node instead of cairo status. (emit_composite_svg_pattern): ditto. (emit_composite_pattern): ditto. (emit_operator): use SVG 1.2 operators, since feComposite filter always composite resulting surface to current canvas. (_cairo_svg_surface_composite): removed. (_cairo_svg_surface_fill_rectangles): removed. (intersect): removed. (_cairo_svg_surface_composite_trapezoids): removed. (emit_paint): new. (_cairo_svg_surface_paint): new. (_cairo_svg_surface_mask): new. (_cairo_svg_surface_stroke): emit operator.
This commit is contained in:
Emmanuel Pacaud
parent
8ff1866724
commit
921dcc16f9
2 changed files with 105 additions and 208 deletions
19
ChangeLog
19
ChangeLog
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@ -1,3 +1,22 @@
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2006-02-13 Emmanuel Pacaud <emmanuel.pacaud@free.fr>
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Add mask support and switch to SVG 1.2 for compositing operators.
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* src/cairo-svg-surface.c (emit_composite_image_pattern): return xml
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node instead of cairo status.
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(emit_composite_svg_pattern): ditto.
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(emit_composite_pattern): ditto.
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(emit_operator): use SVG 1.2 operators, since feComposite filter
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always composite resulting surface to current canvas.
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(_cairo_svg_surface_composite): removed.
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(_cairo_svg_surface_fill_rectangles): removed.
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(intersect): removed.
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(_cairo_svg_surface_composite_trapezoids): removed.
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(emit_paint): new.
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(_cairo_svg_surface_paint): new.
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(_cairo_svg_surface_mask): new.
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(_cairo_svg_surface_stroke): emit operator.
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2006-02-11 Christian Biesinger <cbiesinger@web.de>
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* doc/public/cairo-docs.xml:
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@ -74,6 +74,7 @@ struct cairo_svg_document {
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unsigned int pattern_id;
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unsigned int filter_id;
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unsigned int clip_id;
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unsigned int mask_id;
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};
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struct cairo_svg_surface {
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@ -392,7 +393,7 @@ _cairo_surface_base64_encode (cairo_surface_t *surface,
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return CAIRO_STATUS_SUCCESS;
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}
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static cairo_int_status_t
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static xmlNodePtr
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emit_composite_image_pattern (xmlNodePtr node,
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cairo_surface_pattern_t *pattern,
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double *width,
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@ -410,11 +411,11 @@ emit_composite_image_pattern (xmlNodePtr node,
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status = _cairo_surface_acquire_source_image (surface, &image, &image_extra);
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if (status)
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return status;
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return NULL;
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status = _cairo_surface_base64_encode (surface, &image_buffer);
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if (status)
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return status;
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return NULL;
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child = xmlNewChild (node, NULL, CC2XML ("image"), NULL);
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_cairo_dtostr (buffer, sizeof buffer, image->width);
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@ -438,10 +439,10 @@ emit_composite_image_pattern (xmlNodePtr node,
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_cairo_surface_release_source_image (pattern->surface, image, image_extra);
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return status;
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return child;
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}
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static cairo_int_status_t
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static xmlNodePtr
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emit_composite_svg_pattern (xmlNodePtr node,
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cairo_surface_pattern_t *pattern,
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double *width,
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@ -455,7 +456,7 @@ emit_composite_svg_pattern (xmlNodePtr node,
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/* FIXME: self copy is not supported yet */
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if (surface->id == 0)
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return CAIRO_STATUS_SUCCESS;
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return NULL;
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child = xmlNewChild (node, NULL, CC2XML("use"), NULL);
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snprintf (buffer, sizeof buffer, "#surface%d", surface->id);
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@ -472,10 +473,10 @@ emit_composite_svg_pattern (xmlNodePtr node,
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if (height != NULL)
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*height = surface->height;
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return CAIRO_STATUS_SUCCESS;
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return child;
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}
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static cairo_int_status_t
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static xmlNodePtr
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emit_composite_pattern (xmlNodePtr node,
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cairo_surface_pattern_t *pattern,
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double *width,
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@ -488,69 +489,27 @@ emit_composite_pattern (xmlNodePtr node,
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return emit_composite_image_pattern (node, pattern, width, height, is_pattern);
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}
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static cairo_int_status_t
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_cairo_svg_surface_composite (cairo_operator_t op,
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cairo_pattern_t *src_pattern,
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cairo_pattern_t *mask_pattern,
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void *abstract_dst,
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int src_x,
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int src_y,
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int mask_x,
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int mask_y,
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int dst_x,
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int dst_y,
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unsigned int width,
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unsigned int height)
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{
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cairo_svg_surface_t *dst = abstract_dst;
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cairo_surface_pattern_t *src = (cairo_surface_pattern_t *) src_pattern;
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if (mask_pattern)
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return CAIRO_STATUS_SUCCESS;
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if (src_pattern->type != CAIRO_PATTERN_SURFACE)
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return CAIRO_STATUS_SUCCESS;
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return emit_composite_pattern (dst->xml_node, src, NULL, NULL, FALSE);
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}
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/* FIXME: Here we use a SVG 1.2 feature. We should probably have
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* an API to limit output SVG version, and fallback to image when
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* necessary. */
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static void
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emit_operator (cairo_operator_t op, cairo_svg_surface_t *surface,
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xmlBufferPtr style)
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emit_operator (xmlNodePtr node, cairo_operator_t op)
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{
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char const *op_str[] = {
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NULL,
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NULL, NULL, "in", "out", "atop",
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NULL, NULL, NULL, NULL, NULL,
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"xor", NULL, NULL };
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cairo_svg_document_t *document = surface->document;
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xmlNodePtr child, primitive;
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xmlBufferPtr id;
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char buffer[CAIRO_SVG_DTOSTR_BUFFER_LEN];
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"clear",
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"src", "src-over", "src-in",
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"src-out", "src-atop",
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"dst", "dst-over", "dst-in",
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"dst-out", "dst-atop",
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"xor", "plus",
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"color-dodge" /* FIXME: saturate ? */
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};
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if (op_str[op] == NULL)
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return;
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child = xmlNewChild (document->xml_node_defs, NULL, CC2XML ("filter"), NULL);
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primitive = xmlNewChild (child, NULL, CC2XML ("feComposite"), NULL);
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xmlSetProp (primitive, CC2XML ("operator"), CC2XML (op_str[op]));
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xmlSetProp (primitive, CC2XML ("in"), CC2XML ("SourceGraphic"));
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xmlSetProp (primitive, CC2XML ("in2"), CC2XML ("BackgroundImage"));
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id = xmlBufferCreate ();
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xmlBufferCat (id, CC2XML ("filter"));
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snprintf (buffer, sizeof buffer, "%d", document->filter_id);
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xmlBufferCat (id, C2XML (buffer));
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xmlSetProp (child, CC2XML ("id"), C2XML (xmlBufferContent (id)));
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xmlBufferCat (style, CC2XML ("filter: url(#"));
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xmlBufferCat (style, xmlBufferContent (id));
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xmlBufferCat (style, CC2XML (");"));
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xmlBufferFree (id);
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document->filter_id++;
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xmlSetProp (node, CC2XML ("comp-op"), C2XML (op_str[op]));
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}
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static void
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@ -828,7 +787,7 @@ typedef struct
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xmlBufferPtr path;
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} svg_path_info_t;
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static cairo_status_t
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static cairo_status_t
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_cairo_svg_path_move_to (void *closure, cairo_point_t *point)
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{
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svg_path_info_t *info = closure;
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@ -917,42 +876,6 @@ _cairo_svg_path_close_path (void *closure)
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return CAIRO_STATUS_SUCCESS;
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}
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static cairo_int_status_t
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_cairo_svg_surface_fill_rectangles (void *abstract_surface,
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cairo_operator_t op,
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const cairo_color_t *color,
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cairo_rectangle_t *rects,
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int num_rects)
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{
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cairo_svg_surface_t *surface = abstract_surface;
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xmlNodePtr child;
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xmlBufferPtr style;
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char buffer[CAIRO_SVG_DTOSTR_BUFFER_LEN];
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int i;
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style = xmlBufferCreate ();
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emit_color (color, style, "fill", "opacity");
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xmlBufferCat (style, " stroke: none;");
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emit_operator (op, surface, style);
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for (i = 0; i < num_rects; i++) {
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child = xmlNewChild (surface->xml_node, NULL, CC2XML ("rect"), NULL);
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_cairo_dtostr (buffer, sizeof buffer, rects[i].x);
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xmlSetProp (child, CC2XML ("x"), C2XML (buffer));
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_cairo_dtostr (buffer, sizeof buffer, rects[i].y);
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xmlSetProp (child, CC2XML ("y"), C2XML (buffer));
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_cairo_dtostr (buffer, sizeof buffer, rects[i].width);
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xmlSetProp (child, CC2XML ("width"), C2XML (buffer));
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_cairo_dtostr (buffer, sizeof buffer, rects[i].height);
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xmlSetProp (child, CC2XML ("height"), C2XML (buffer));
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xmlSetProp (child, CC2XML ("style"), xmlBufferContent (style));
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}
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xmlBufferFree (style);
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return CAIRO_STATUS_SUCCESS;
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}
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static cairo_int_status_t
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_cairo_svg_surface_fill (void *abstract_surface,
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cairo_operator_t op,
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@ -978,7 +901,6 @@ _cairo_svg_surface_fill (void *abstract_surface,
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xmlBufferCat (style, " stroke: none;");
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xmlBufferCat (style, " fill-rule: ");
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xmlBufferCat (style, fill_rule == CAIRO_FILL_RULE_EVEN_ODD ? "evenodd;" : "nonzero;");
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emit_operator (op, surface, style);
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status = _cairo_path_fixed_interpret (path,
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CAIRO_DIRECTION_FORWARD,
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@ -991,6 +913,7 @@ _cairo_svg_surface_fill (void *abstract_surface,
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child = xmlNewChild (surface->xml_node, NULL, CC2XML ("path"), NULL);
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xmlSetProp (child, CC2XML ("d"), xmlBufferContent (info.path));
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xmlSetProp (child, CC2XML ("style"), xmlBufferContent (style));
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emit_operator (child, op);
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xmlBufferFree (info.path);
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xmlBufferFree (style);
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@ -998,91 +921,6 @@ _cairo_svg_surface_fill (void *abstract_surface,
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return status;
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}
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static double
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intersect (cairo_line_t *line, cairo_fixed_t y)
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{
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return _cairo_fixed_to_double (line->p1.x) +
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_cairo_fixed_to_double (line->p2.x - line->p1.x) *
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_cairo_fixed_to_double (y - line->p1.y) /
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_cairo_fixed_to_double (line->p2.y - line->p1.y);
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}
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static cairo_int_status_t
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_cairo_svg_surface_composite_trapezoids (cairo_operator_t op,
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cairo_pattern_t *pattern,
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void *abstract_dst,
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cairo_antialias_t antialias,
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int x_src,
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int y_src,
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int x_dst,
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int y_dst,
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unsigned int width,
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unsigned int height,
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cairo_trapezoid_t *traps,
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int num_traps)
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{
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cairo_svg_surface_t *surface = abstract_dst;
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xmlBufferPtr style, path;
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xmlNodePtr child;
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double left_x1, left_x2, right_x1, right_x2;
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char buffer[CAIRO_SVG_DTOSTR_BUFFER_LEN];
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int i;
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style = xmlBufferCreate ();
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emit_pattern (surface, pattern, style, 0);
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xmlBufferCat (style, "stroke: none;");
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path = xmlBufferCreate ();
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for (i = 0; i < num_traps; i++) {
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left_x1 = intersect (&traps[i].left, traps[i].top);
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left_x2 = intersect (&traps[i].left, traps[i].bottom);
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right_x1 = intersect (&traps[i].right, traps[i].top);
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right_x2 = intersect (&traps[i].right, traps[i].bottom);
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xmlBufferCat (path, CC2XML ("M "));
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_cairo_dtostr (buffer, sizeof buffer, left_x1);
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xmlBufferCat (path, CC2XML (buffer));
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xmlBufferCat (path, CC2XML (" "));
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_cairo_dtostr (buffer, sizeof buffer,
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_cairo_fixed_to_double (traps[i].top));
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xmlBufferCat (path, CC2XML (buffer));
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xmlBufferCat (path, CC2XML (" L "));
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_cairo_dtostr (buffer, sizeof buffer, left_x2);
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xmlBufferCat (path, CC2XML (buffer));
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xmlBufferCat (path, CC2XML (" "));
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_cairo_dtostr (buffer, sizeof buffer,
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_cairo_fixed_to_double (traps[i].bottom));
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xmlBufferCat (path, CC2XML (buffer));
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xmlBufferCat (path, CC2XML (" L "));
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_cairo_dtostr (buffer, sizeof buffer, right_x2);
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xmlBufferCat (path, CC2XML (buffer));
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xmlBufferCat (path, CC2XML (" "));
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_cairo_dtostr (buffer, sizeof buffer,
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_cairo_fixed_to_double (traps[i].bottom));
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xmlBufferCat (path, CC2XML (buffer));
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xmlBufferCat (path, CC2XML (" L "));
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_cairo_dtostr (buffer, sizeof buffer, right_x1);
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xmlBufferCat (path, CC2XML (buffer));
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xmlBufferCat (path, CC2XML (" "));
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_cairo_dtostr (buffer, sizeof buffer,
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_cairo_fixed_to_double (traps[i].top));
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xmlBufferCat (path, CC2XML (buffer));
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xmlBufferCat (path, CC2XML (" Z"));
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}
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child = xmlNewChild (surface->xml_node, NULL, CC2XML ("path"), NULL);
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xmlSetProp (child, CC2XML ("d"), xmlBufferContent (path));
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xmlSetProp (child, CC2XML ("style"), xmlBufferContent (style));
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xmlBufferFree (path);
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xmlBufferFree (style);
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return CAIRO_STATUS_SUCCESS;
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}
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static cairo_int_status_t
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_cairo_svg_surface_get_extents (void *abstract_surface,
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cairo_rectangle_t *rectangle)
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@ -1102,26 +940,26 @@ _cairo_svg_surface_get_extents (void *abstract_surface,
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return CAIRO_STATUS_SUCCESS;
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}
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/* First attempt of paint implementation, but obviously I didn't
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* understand how it's supposed to work */
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#if 0
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static cairo_int_status_t
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_cairo_svg_surface_paint (void *abstract_surface,
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cairo_operator_t op,
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cairo_pattern_t *source)
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static xmlNodePtr
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emit_paint (xmlNodePtr node,
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cairo_svg_surface_t *surface,
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cairo_operator_t op,
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cairo_pattern_t *source)
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{
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cairo_svg_surface_t *surface = abstract_surface;
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xmlNodePtr child;
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xmlBufferPtr style;
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char buffer[CAIRO_SVG_DTOSTR_BUFFER_LEN];
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if (source->type == CAIRO_PATTERN_SURFACE)
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return emit_composite_pattern (node,
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(cairo_surface_pattern_t *) source,
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NULL, NULL, FALSE);
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style = xmlBufferCreate ();
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emit_pattern (surface, source, style, 0);
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xmlBufferCat (style, " stroke: none;");
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emit_operator (op, surface, style);
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child = xmlNewChild (surface->xml_node, NULL, CC2XML ("rect"), NULL);
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child = xmlNewChild (node, NULL, CC2XML ("rect"), NULL);
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xmlSetProp (child, CC2XML ("x"), CC2XML ("0"));
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xmlSetProp (child, CC2XML ("y"), CC2XML ("0"));
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_cairo_dtostr (buffer, sizeof buffer, surface->width);
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@ -1129,12 +967,51 @@ _cairo_svg_surface_paint (void *abstract_surface,
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_cairo_dtostr (buffer, sizeof buffer, surface->height);
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xmlSetProp (child, CC2XML ("height"), C2XML (buffer));
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xmlSetProp (child, CC2XML ("style"), xmlBufferContent (style));
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emit_operator (child, op);
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xmlBufferFree (style);
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return child;
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}
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static cairo_int_status_t
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_cairo_svg_surface_paint (void *abstract_surface,
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cairo_operator_t op,
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cairo_pattern_t *source)
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{
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cairo_svg_surface_t *surface = abstract_surface;
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emit_paint (surface->xml_node, surface, op, source);
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return CAIRO_STATUS_SUCCESS;
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}
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static cairo_int_status_t
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_cairo_svg_surface_mask (void *abstract_surface,
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cairo_operator_t op,
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cairo_pattern_t *source,
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cairo_pattern_t *mask)
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{
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cairo_svg_surface_t *surface = abstract_surface;
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cairo_svg_document_t *document = surface->document;
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xmlNodePtr child, mask_node;
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char buffer[CAIRO_SVG_DTOSTR_BUFFER_LEN];
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mask_node = xmlNewChild (document->xml_node_defs, NULL, CC2XML ("mask"), NULL);
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snprintf (buffer, sizeof buffer, "mask%d", document->mask_id);
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xmlSetProp (mask_node, CC2XML ("id"), C2XML (buffer));
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emit_paint (mask_node, surface, op, mask);
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child = emit_paint (surface->xml_node, surface, op, source);
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if (child) {
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snprintf (buffer, sizeof buffer, "url(#mask%d)", document->mask_id);
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xmlSetProp (child, CC2XML ("mask"), C2XML (buffer));
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}
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document->mask_id++;
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return CAIRO_STATUS_SUCCESS;
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}
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#endif
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static cairo_int_status_t
|
||||
_cairo_svg_surface_stroke (void *abstract_dst,
|
||||
|
|
@ -1231,9 +1108,9 @@ _cairo_svg_surface_stroke (void *abstract_dst,
|
|||
&info);
|
||||
|
||||
child = xmlNewChild (surface->xml_node, NULL, CC2XML ("path"), NULL);
|
||||
|
||||
xmlSetProp (child, CC2XML ("d"), xmlBufferContent (info.path));
|
||||
xmlSetProp (child, CC2XML ("style"), xmlBufferContent (style));
|
||||
emit_operator (child, op);
|
||||
|
||||
xmlBufferFree (info.path);
|
||||
xmlBufferFree (style);
|
||||
|
|
@ -1357,9 +1234,9 @@ static const cairo_surface_backend_t cairo_svg_surface_backend = {
|
|||
NULL, /* acquire_dest_image */
|
||||
NULL, /* release_dest_image */
|
||||
NULL, /* clone_similar */
|
||||
_cairo_svg_surface_composite,
|
||||
_cairo_svg_surface_fill_rectangles,
|
||||
_cairo_svg_surface_composite_trapezoids,
|
||||
NULL, /* _cairo_svg_surface_composite, */
|
||||
NULL, /* _cairo_svg_surface_fill_rectangles, */
|
||||
NULL, /* _cairo_svg_surface_composite_trapezoids,*/
|
||||
NULL, /* copy_page */
|
||||
NULL, /* show_page */
|
||||
NULL, /* set_clip_region */
|
||||
|
|
@ -1371,8 +1248,8 @@ static const cairo_surface_backend_t cairo_svg_surface_backend = {
|
|||
NULL, /* mark dirty rectangle */
|
||||
NULL, /* scaled font fini */
|
||||
NULL, /* scaled glyph fini */
|
||||
NULL, /*_cairo_svg_surface_paint,*/
|
||||
NULL, /* mask */
|
||||
_cairo_svg_surface_paint,
|
||||
_cairo_svg_surface_mask,
|
||||
_cairo_svg_surface_stroke,
|
||||
_cairo_svg_surface_fill,
|
||||
NULL /* show_glyphs */
|
||||
|
|
@ -1407,6 +1284,7 @@ _cairo_svg_document_create (cairo_output_stream_t *output_stream,
|
|||
document->pattern_id = 0;
|
||||
document->filter_id = 0;
|
||||
document->clip_id = 0;
|
||||
document->mask_id = 0;
|
||||
|
||||
doc = xmlNewDoc (CC2XML ("1.0"));
|
||||
node = xmlNewNode (NULL, CC2XML ("svg"));
|
||||
|
|
@ -1423,7 +1301,7 @@ _cairo_svg_document_create (cairo_output_stream_t *output_stream,
|
|||
xmlSetProp (node, CC2XML ("height"), CC2XML (buffer));
|
||||
xmlSetProp (node, CC2XML ("xmlns"), CC2XML ("http://www.w3.org/2000/svg"));
|
||||
xmlSetProp (node, CC2XML ("xmlns:xlink"), CC2XML ("http://www.w3.org/1999/xlink"));
|
||||
xmlSetProp (node, CC2XML ("version"), CC2XML ("1.1"));
|
||||
xmlSetProp (node, CC2XML ("version"), CC2XML ("1.2"));
|
||||
|
||||
return document;
|
||||
}
|
||||
|
|
|
|||
Loading…
Add table
Reference in a new issue