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#include "mupdf/fitz.h"
#include "svg-imp.h"
typedef struct svg_page_s svg_page;
struct svg_page_s
{
fz_page super;
svg_document *doc;
};
static void
svg_drop_document(fz_context *ctx, fz_document *doc_)
{
svg_document *doc = (svg_document*)doc_;
fz_drop_tree(ctx, doc->idmap, NULL);
fz_drop_xml(ctx, doc->xml);
}
static int
svg_count_pages(fz_context *ctx, fz_document *doc_)
{
return 1;
}
static fz_rect
svg_bound_page(fz_context *ctx, fz_page *page_)
{
svg_page *page = (svg_page*)page_;
svg_document *doc = page->doc;
svg_parse_document_bounds(ctx, doc, fz_xml_root(doc->xml));
return fz_make_rect(0, 0, doc->width, doc->height);
}
static void
svg_run_page(fz_context *ctx, fz_page *page_, fz_device *dev, fz_matrix ctm, fz_cookie *cookie)
{
svg_page *page = (svg_page*)page_;
svg_document *doc = page->doc;
svg_run_document(ctx, doc, fz_xml_root(doc->xml), dev, ctm);
}
static void
svg_drop_page(fz_context *ctx, fz_page *page_)
{
/* nothing */
}
static fz_page *
svg_load_page(fz_context *ctx, fz_document *doc_, int number)
{
svg_document *doc = (svg_document*)doc_;
svg_page *page;
if (number != 0)
fz_throw(ctx, FZ_ERROR_GENERIC, "cannot find page %d", number);
page = fz_new_derived_page(ctx, svg_page);
page->super.bound_page = svg_bound_page;
page->super.run_page_contents = svg_run_page;
page->super.drop_page = svg_drop_page;
page->doc = doc;
return (fz_page*)page;
}
static void
svg_build_id_map(fz_context *ctx, svg_document *doc, fz_xml *root)
{
fz_xml *node;
char *id_att = fz_xml_att(root, "id");
if (id_att)
doc->idmap = fz_tree_insert(ctx, doc->idmap, id_att, root);
for (node = fz_xml_down(root); node; node = fz_xml_next(node))
svg_build_id_map(ctx, doc, node);
}
static fz_document *
svg_open_document_with_buffer(fz_context *ctx, fz_buffer *buf)
{
svg_document *doc;
doc = fz_new_derived_document(ctx, svg_document);
doc->super.drop_document = svg_drop_document;
doc->super.count_pages = svg_count_pages;
doc->super.load_page = svg_load_page;
doc->idmap = NULL;
fz_try(ctx)
{
doc->xml = fz_parse_xml(ctx, buf, 0);
svg_build_id_map(ctx, doc, fz_xml_root(doc->xml));
}
fz_catch(ctx)
{
fz_drop_document(ctx, &doc->super);
fz_rethrow(ctx);
}
return (fz_document*)doc;
}
static fz_document *
svg_open_document_with_stream(fz_context *ctx, fz_stream *file)
{
fz_buffer *buf;
fz_document *doc = NULL;
buf = fz_read_all(ctx, file, 0);
fz_try(ctx)
doc = svg_open_document_with_buffer(ctx, buf);
fz_always(ctx)
fz_drop_buffer(ctx, buf);
fz_catch(ctx)
fz_rethrow(ctx);
return doc;
}
fz_display_list *
fz_new_display_list_from_svg(fz_context *ctx, fz_buffer *buf, float *w, float *h)
{
fz_document *doc;
fz_display_list *list = NULL;
doc = svg_open_document_with_buffer(ctx, buf);
fz_try(ctx)
{
list = fz_new_display_list_from_page_number(ctx, doc, 0);
*w = ((svg_document*)doc)->width;
*h = ((svg_document*)doc)->height;
}
fz_always(ctx)
fz_drop_document(ctx, doc);
fz_catch(ctx)
fz_rethrow(ctx);
return list;
}
fz_image *
fz_new_image_from_svg(fz_context *ctx, fz_buffer *buf)
{
fz_display_list *list;
fz_image *image = NULL;
float w, h;
list = fz_new_display_list_from_svg(ctx, buf, &w, &h);
fz_try(ctx)
image = fz_new_image_from_display_list(ctx, w, h, list);
fz_always(ctx)
fz_drop_display_list(ctx, list);
fz_catch(ctx)
fz_rethrow(ctx);
return image;
}
static const char *svg_extensions[] =
{
"svg",
NULL
};
static const char *svg_mimetypes[] =
{
"image/svg+xml",
NULL
};
fz_document_handler svg_document_handler =
{
NULL,
NULL,
svg_open_document_with_stream,
svg_extensions,
svg_mimetypes
};
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