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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->root);
}
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_, fz_rect *rect)
{
svg_page *page = (svg_page*)page_;
svg_document *doc = page->doc;
svg_parse_document_bounds(ctx, doc, doc->root);
rect->x0 = 0;
rect->y0 = 0;
rect->x1 = doc->width;
rect->y1 = doc->height;
return rect;
}
static void
svg_run_page(fz_context *ctx, fz_page *page_, fz_device *dev, const fz_matrix *ctm, fz_cookie *cookie)
{
svg_page *page = (svg_page*)page_;
svg_document *doc = page->doc;
svg_run_document(ctx, doc, doc->root, 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)
return NULL;
page = fz_new_page(ctx, sizeof *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;
fz_xml *root;
root = fz_parse_xml(ctx, buf->data, buf->len, 0);
doc = fz_new_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->root = root;
doc->idmap = NULL;
svg_build_id_map(ctx, doc, root);
return (fz_document*)doc;
}
static fz_document *
svg_open_document_with_stream(fz_context *ctx, fz_stream *file)
{
fz_buffer *buf;
fz_document *doc;
buf = fz_read_all(ctx, file, 0);
fz_try(ctx)
{
fz_write_buffer_byte(ctx, buf, 0);
doc = svg_open_document_with_buffer(ctx, buf);
}
fz_always(ctx)
fz_drop_buffer(ctx, buf);
fz_catch(ctx)
fz_rethrow(ctx);
return doc;
}
static int
svg_recognize(fz_context *ctx, const char *magic)
{
char *ext = strrchr(magic, '.');
if (ext && !fz_strcasecmp(ext, ".svg"))
return 100;
if (!strcmp(magic, "svg") || !strcmp(magic, "image/svg+xml"))
return 100;
return 0;
}
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;
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;
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;
}
fz_document_handler svg_document_handler =
{
&svg_recognize,
NULL,
&svg_open_document_with_stream
};
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