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