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#include "mupdf/fitz.h"
#include "xps-imp.h"
#include <string.h>
#include <stdlib.h>
/* Quick parsing of document to find links. */
static void
xps_load_links_in_element(fz_context *ctx, xps_document *doc, const fz_matrix *ctm,
char *base_uri, xps_resource *dict, fz_xml *node, fz_link **link);
static void
xps_add_link(fz_context *ctx, xps_document *doc, const fz_rect *area, char *base_uri, char *target_uri, fz_link **head)
{
fz_link *link = fz_new_link(ctx, area, doc, target_uri);
link->next = *head;
*head = link;
}
static void
xps_load_links_in_path(fz_context *ctx, xps_document *doc, const fz_matrix *ctm,
char *base_uri, xps_resource *dict, fz_xml *root, fz_link **link)
{
char *navigate_uri_att = fz_xml_att(root, "FixedPage.NavigateUri");
if (navigate_uri_att)
{
char *transform_att = fz_xml_att(root, "RenderTransform");
fz_xml *transform_tag = fz_xml_down(fz_xml_find_down(root, "Path.RenderTransform"));
char *data_att = fz_xml_att(root, "Data");
fz_xml *data_tag = fz_xml_down(fz_xml_find_down(root, "Path.Data"));
fz_path *path = NULL;
int fill_rule;
fz_matrix local_ctm;
fz_rect area;
xps_resolve_resource_reference(ctx, doc, dict, &data_att, &data_tag, NULL);
xps_resolve_resource_reference(ctx, doc, dict, &transform_att, &transform_tag, NULL);
xps_parse_transform(ctx, doc, transform_att, transform_tag, &local_ctm, ctm);
if (data_att)
path = xps_parse_abbreviated_geometry(ctx, doc, data_att, &fill_rule);
else if (data_tag)
path = xps_parse_path_geometry(ctx, doc, dict, data_tag, 0, &fill_rule);
if (path)
{
fz_bound_path(ctx, path, NULL, &local_ctm, &area);
fz_drop_path(ctx, path);
xps_add_link(ctx, doc, &area, base_uri, navigate_uri_att, link);
}
}
}
static void
xps_load_links_in_glyphs(fz_context *ctx, xps_document *doc, const fz_matrix *ctm,
char *base_uri, xps_resource *dict, fz_xml *root, fz_link **link)
{
char *navigate_uri_att = fz_xml_att(root, "FixedPage.NavigateUri");
if (navigate_uri_att)
{
char *transform_att = fz_xml_att(root, "RenderTransform");
fz_xml *transform_tag = fz_xml_down(fz_xml_find_down(root, "Path.RenderTransform"));
char *bidi_level_att = fz_xml_att(root, "BidiLevel");
char *font_size_att = fz_xml_att(root, "FontRenderingEmSize");
char *font_uri_att = fz_xml_att(root, "FontUri");
char *origin_x_att = fz_xml_att(root, "OriginX");
char *origin_y_att = fz_xml_att(root, "OriginY");
char *is_sideways_att = fz_xml_att(root, "IsSideways");
char *indices_att = fz_xml_att(root, "Indices");
char *unicode_att = fz_xml_att(root, "UnicodeString");
char *style_att = fz_xml_att(root, "StyleSimulations");
int is_sideways = 0;
int bidi_level = 0;
fz_matrix local_ctm;
fz_font *font;
fz_text *text;
fz_rect area;
xps_resolve_resource_reference(ctx, doc, dict, &transform_att, &transform_tag, NULL);
xps_parse_transform(ctx, doc, transform_att, transform_tag, &local_ctm, ctm);
if (is_sideways_att)
is_sideways = !strcmp(is_sideways_att, "true");
if (bidi_level_att)
bidi_level = atoi(bidi_level_att);
font = xps_lookup_font(ctx, doc, base_uri, font_uri_att, style_att);
text = xps_parse_glyphs_imp(ctx, doc, &local_ctm, font, fz_atof(font_size_att),
fz_atof(origin_x_att), fz_atof(origin_y_att),
is_sideways, bidi_level, indices_att, unicode_att);
fz_bound_text(ctx, text, NULL, &local_ctm, &area);
fz_drop_text(ctx, text);
fz_drop_font(ctx, font);
xps_add_link(ctx, doc, &area, base_uri, navigate_uri_att, link);
}
}
static void
xps_load_links_in_canvas(fz_context *ctx, xps_document *doc, const fz_matrix *ctm,
char *base_uri, xps_resource *dict, fz_xml *root, fz_link **link)
{
xps_resource *new_dict = NULL;
fz_matrix local_ctm;
fz_xml *node;
char *navigate_uri_att = fz_xml_att(root, "FixedPage.NavigateUri");
char *transform_att = fz_xml_att(root, "RenderTransform");
fz_xml *transform_tag = fz_xml_down(fz_xml_find_down(root, "Canvas.RenderTransform"));
fz_xml *resource_tag = fz_xml_down(fz_xml_find_down(root, "Canvas.Resources"));
if (resource_tag)
{
new_dict = xps_parse_resource_dictionary(ctx, doc, base_uri, resource_tag);
if (new_dict)
{
new_dict->parent = dict;
dict = new_dict;
}
}
xps_resolve_resource_reference(ctx, doc, dict, &transform_att, &transform_tag, NULL);
xps_parse_transform(ctx, doc, transform_att, transform_tag, &local_ctm, ctm);
if (navigate_uri_att)
fz_warn(ctx, "FixedPage.NavigateUri attribute on Canvas element");
for (node = fz_xml_down(root); node; node = fz_xml_next(node))
xps_load_links_in_element(ctx, doc, &local_ctm, base_uri, dict, node, link);
if (new_dict)
xps_drop_resource_dictionary(ctx, doc, new_dict);
}
static void
xps_load_links_in_element(fz_context *ctx, xps_document *doc, const fz_matrix *ctm, char *base_uri, xps_resource *dict, fz_xml *node, fz_link **link)
{
if (fz_xml_is_tag(node, "Path"))
xps_load_links_in_path(ctx, doc, ctm, base_uri, dict, node, link);
else if (fz_xml_is_tag(node, "Glyphs"))
xps_load_links_in_glyphs(ctx, doc, ctm, base_uri, dict, node, link);
else if (fz_xml_is_tag(node, "Canvas"))
xps_load_links_in_canvas(ctx, doc, ctm, base_uri, dict, node, link);
else if (fz_xml_is_tag(node, "AlternateContent"))
{
node = xps_lookup_alternate_content(ctx, doc, node);
if (node)
xps_load_links_in_element(ctx, doc, ctm, base_uri, dict, node, link);
}
}
static void
xps_load_links_in_fixed_page(fz_context *ctx, xps_document *doc, const fz_matrix *ctm, xps_page *page, fz_link **link)
{
fz_xml *node, *resource_tag;
xps_resource *dict = NULL;
char base_uri[1024];
char *s;
if (!page->root)
return;
fz_strlcpy(base_uri, page->fix->name, sizeof base_uri);
s = strrchr(base_uri, '/');
if (s)
s[1] = 0;
resource_tag = fz_xml_down(fz_xml_find_down(page->root, "FixedPage.Resources"));
if (resource_tag)
dict = xps_parse_resource_dictionary(ctx, doc, base_uri, resource_tag);
for (node = fz_xml_down(page->root); node; node = fz_xml_next(node))
xps_load_links_in_element(ctx, doc, ctm, base_uri, dict, node, link);
if (dict)
xps_drop_resource_dictionary(ctx, doc, dict);
}
fz_link *
xps_load_links(fz_context *ctx, xps_page *page)
{
fz_matrix ctm;
fz_link *link = NULL;
fz_scale(&ctm, 72.0f / 96.0f, 72.0f / 96.0f);
xps_load_links_in_fixed_page(ctx, page->doc, &ctm, page, &link);
return link;
}
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