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https://github.com/michaelrsweet/pdfio.git
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Add support for remote URL links.
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@ -86,7 +86,8 @@ typedef struct docdata_s // Document formatting data
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docfont_t font; // Current font
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double fsize; // Current font size
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doccolor_t color; // Current color
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pdfio_obj_t *annots; // Annotations object (for links)
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pdfio_array_t *annots_array; // Annotations array (for links)
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pdfio_obj_t *annots_obj; // Annotations object (for links)
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size_t num_links; // Number of links for this page
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doclink_t links[DOCLINK_MAX]; // Links for this page
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} docdata_t;
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@ -99,6 +100,7 @@ typedef struct linefrag_s // Line fragment
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height; // Height of item
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size_t imagenum; // Image number
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const char *text; // Text string
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const char *url; // Link URL string
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bool ws; // Whitespace before text?
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docfont_t font; // Text font
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doccolor_t color; // Text color
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@ -203,6 +205,7 @@ static const char * const docfont_names[] =
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//
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static void add_images(docdata_t *dd, mmd_t *doc);
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static void add_links(docdata_t *dd);
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static pdfio_obj_t *find_image(docdata_t *dd, const char *url, size_t *imagenum);
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static void format_block(docdata_t *dd, mmd_t *block, docfont_t deffont, double fsize, double left, double right, const char *leader);
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static void format_code(docdata_t *dd, mmd_t *block, double left, double right);
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@ -303,7 +306,11 @@ main(int argc, // I - Number of command-line arguments
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format_doc(&dd, doc, dd.art_box.x1, dd.art_box.x2);
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// Close the PDF and return...
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pdfioStreamClose(dd.st);
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if (dd.st)
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{
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pdfioStreamClose(dd.st);
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add_links(&dd);
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}
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pdfioFileClose(dd.pdf);
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mmdFree(doc);
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@ -394,6 +401,59 @@ find_image(docdata_t *dd, // I - Document data
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}
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//
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// 'add_links()' - Add the page links, if any.
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//
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static void
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add_links(docdata_t *dd) // I - Document data
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{
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size_t i; // Looping var
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doclink_t *l; // Current link
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pdfio_dict_t *dict; // Object dictionary
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pdfio_obj_t *aobj, // Annotation object
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*lobj; // Link object
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pdfio_array_t *border; // Border values
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// Add any links we have...
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for (i = 0, l = dd->links; i < dd->num_links; i ++, l ++)
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{
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// Create the link action (remote URL)
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dict = pdfioDictCreate(dd->pdf);
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pdfioDictSetName(dict, "S", "URI");
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pdfioDictSetString(dict, "URI", pdfioStringCreate(dd->pdf, l->url));
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aobj = pdfioFileCreateObj(dd->pdf, dict);
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pdfioObjClose(aobj);
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// Create the annotation object pointing to the action...
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dict = pdfioDictCreate(dd->pdf);
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pdfioDictSetName(dict, "Subtype", "Link");
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pdfioDictSetRect(dict, "Rect", &l->box);
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border = pdfioArrayCreate(dd->pdf);
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pdfioArrayAppendNumber(border, 0.0);
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pdfioArrayAppendNumber(border, 0.0);
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pdfioArrayAppendNumber(border, 0.0);
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pdfioDictSetArray(dict, "Border", border);
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pdfioDictSetObj(dict, "A", aobj);
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lobj = pdfioFileCreateObj(dd->pdf, dict);
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pdfioObjClose(lobj);
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pdfioArrayAppendObj(dd->annots_array, lobj);
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}
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// Close the Annots array object...
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pdfioObjClose(dd->annots_obj);
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// Reset links...
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dd->annots_array = NULL;
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dd->annots_obj = NULL;
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dd->num_links = 0;
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}
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//
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// 'format_block()' - Format a block of text
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//
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@ -584,6 +644,7 @@ format_block(docdata_t *dd, // I - Document data
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frag->height = text ? fsize : height;
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frag->imagenum = imagenum;
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frag->text = text;
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frag->url = url;
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frag->ws = ws;
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frag->font = font;
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frag->color = color;
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@ -1076,15 +1137,23 @@ new_page(docdata_t *dd) // I - Document data
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// Close the current page...
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pdfioStreamClose(dd->st);
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if (dd->st)
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{
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pdfioStreamClose(dd->st);
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add_links(dd);
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}
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// Prep the new page...
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page_dict = pdfioDictCreate(dd->pdf);
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dd->annots_array = pdfioArrayCreate(dd->pdf);
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dd->annots_obj = pdfioFileCreateArrayObj(dd->pdf, dd->annots_array);
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pdfioDictSetRect(page_dict, "MediaBox", &dd->media_box);
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// pdfioDictSetRect(page_dict, "CropBox", &dd->crop_box);
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pdfioDictSetRect(page_dict, "ArtBox", &dd->art_box);
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pdfioDictSetObj(page_dict, "Annots", dd->annots_obj);
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for (fontface = DOCFONT_REGULAR; fontface < DOCFONT_MAX; fontface ++)
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pdfioPageDictAddFont(page_dict, docfont_names[fontface], dd->fonts[fontface]);
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@ -1248,6 +1317,20 @@ render_line(docdata_t *dd, // I - Document data
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pdfioContentTextShowf(dd->st, UNICODE_VALUE, " %s", frag->text);
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else
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pdfioContentTextShow(dd->st, UNICODE_VALUE, frag->text);
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if (frag->type == MMD_TYPE_LINKED_TEXT && frag->url && dd->num_links < DOCLINK_MAX && (!strncmp(frag->url, "http://", 7) || !strncmp(frag->url, "https://", 8)))
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{
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doclink_t *l = dd->links + dd->num_links;
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// Pointer to this link record
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l->url = frag->url;
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l->box.x1 = frag->x;
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l->box.y1 = dd->y;
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l->box.x2 = frag->x + frag->width;
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l->box.y2 = dd->y + frag->height;
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dd->num_links ++;
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}
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}
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else
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{
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@ -19,9 +19,9 @@ Source Files
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------------
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The `md2pdf` program is organized into three source files: `md2pdf.c` which
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contains the code to format the markdown content and `mmd.h` and `mmd.c` which
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load the markdown content, which come from the [Miniature Markdown Library][MMD]
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project which is provided under the terms of the Apache License v2.0.
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![Apache License v2.0](apache-badge.png)
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contains the code to format the markdown content and `mmd.h` and `mmd.c` (from
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the [Miniature Markdown Library][MMD] project) which load the markdown content.
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[MMD]: https://www.msweet.org/mmd/
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