diff options
Diffstat (limited to 'source/xps/xps-link.c')
| -rw-r--r-- | source/xps/xps-link.c | 206 |
1 files changed, 206 insertions, 0 deletions
diff --git a/source/xps/xps-link.c b/source/xps/xps-link.c new file mode 100644 index 00000000..64abc2a7 --- /dev/null +++ b/source/xps/xps-link.c @@ -0,0 +1,206 @@ +#include "mupdf/xps.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_dest dest; + fz_link *link; + + memset(&dest, 0, sizeof dest); + + if (xps_url_is_remote(ctx, doc, target_uri)) + { + dest.kind = FZ_LINK_URI; + dest.ld.uri.uri = fz_strdup(ctx, target_uri); + } + else + { + dest.kind = FZ_LINK_GOTO; + dest.ld.gotor.page = xps_lookup_link_target(ctx, doc, target_uri); + } + + link = fz_new_link(ctx, area, dest); + 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; +} |