Doco updates.

doc/pdfio.md

@@ -465,7 +465,9 @@ You create a new PDF file using the [`pdfioFileCreate`](@@) function:
 pdfio_rect_t media_box = { 0.0, 0.0, 612.0, 792.0 };  // US Letter
 pdfio_rect_t crop_box = { 36.0, 36.0, 576.0, 756.0 }; // w/0.5" margins
 
-pdfio_file_t *pdf = pdfioFileCreate("myoutputfile.pdf", "2.0", &media_box, &crop_box, error_cb, error_data);
+pdfio_file_t *pdf = pdfioFileCreate("myoutputfile.pdf", "2.0",
+                                    &media_box, &crop_box,
+                                    error_cb, error_data);
 ```
 
 where the six arguments to the function are the filename ("myoutputfile.pdf"),
@@ -481,7 +483,9 @@ function:
 pdfio_rect_t media_box = { 0.0, 0.0, 612.0, 792.0 };  // US Letter
 pdfio_rect_t crop_box = { 36.0, 36.0, 576.0, 756.0 }; // w/0.5" margins
 
-pdfio_file_t *pdf = pdfioFileCreateOutput(output_cb, output_ctx, "2.0", &media_box, &crop_box, error_cb, error_data);
+pdfio_file_t *pdf = pdfioFileCreateOutput(output_cb, output_ctx, "2.0",
+                                          &media_box, &crop_box,
+                                          error_cb, error_data);
 ```
 
 Once the file is created, use the [`pdfioFileCreateObj`](@@),
@@ -638,13 +642,16 @@ spaces:
 pdfio_file_t *pdf = pdfioFileCreate(...);
 
 // Create an AdobeRGB color array
-pdfio_array_t *adobe_rgb = pdfioArrayCreateColorFromStandard(pdf, 3, PDFIO_CS_ADOBE);
+pdfio_array_t *adobe_rgb =
+    pdfioArrayCreateColorFromStandard(pdf, 3, PDFIO_CS_ADOBE);
 
 // Create an Display P3 color array
-pdfio_array_t *display_p3 = pdfioArrayCreateColorFromStandard(pdf, 3, PDFIO_CS_P3_D65);
+pdfio_array_t *display_p3 =
+    pdfioArrayCreateColorFromStandard(pdf, 3, PDFIO_CS_P3_D65);
 
 // Create an sRGB color array
-pdfio_array_t *srgb = pdfioArrayCreateColorFromStandard(pdf, 3, PDFIO_CS_SRGB);
+pdfio_array_t *srgb =
+    pdfioArrayCreateColorFromStandard(pdf, 3, PDFIO_CS_SRGB);
 ```
 
 
@@ -670,6 +677,7 @@ font object for one of the base PDF fonts:
 - "Times-Roman"
 - "ZapfDingbats"
 
+Except for Symbol and ZapfDingbats (which use a custom 8-bit character set),
 PDFio always uses the Windows CP1252 subset of Unicode for these fonts.
 
 The second function is [`pdfioFileCreateFontObjFromFile`](@@) which creates a
@@ -677,7 +685,8 @@ font object from a TrueType/OpenType font file, for example:
 
 ```c
 pdfio_file_t *pdf = pdfioFileCreate(...);
-pdfio_obj_t *arial = pdfioFileCreateFontObjFromFile(pdf, "OpenSans-Regular.ttf", false);
+pdfio_obj_t *arial =
+    pdfioFileCreateFontObjFromFile(pdf, "OpenSans-Regular.ttf", false);
 ```
 
 will embed an OpenSans Regular TrueType font using the Windows CP1252 subset of
@@ -686,12 +695,16 @@ instead, for example:
 
 ```c
 pdfio_file_t *pdf = pdfioFileCreate(...);
-pdfio_obj_t *arial = pdfioFileCreateFontObjFromFile(pdf, "NotoSansJP-Regular.otf", true);
+pdfio_obj_t *arial =
+    pdfioFileCreateFontObjFromFile(pdf, "NotoSansJP-Regular.otf", true);
 ```
 
 will embed the NotoSansJP Regular OpenType font with full support for Unicode.
 
-> Note: Not all fonts support Unicode.
+> Note: Not all fonts support Unicode, and most do not contain a full
+> complement of Unicode characters.  `pdfioFileCreateFontObjFromFile` does not
+> perform any character subsetting, so the entire font file is embedded in the
+> PDF file.
 
 
 ### Image Object Functions
@@ -705,7 +718,11 @@ in memory, for example:
 ```c
 pdfio_file_t *pdf = pdfioFileCreate(...);
 unsigned char data[1024 * 1024 * 4]; // 1024x1024 RGBA image data
-pdfio_obj_t *img = pdfioFileCreateImageObjFromData(pdf, data, /*width*/1024, /*height*/1024, /*num_colors*/3, /*color_data*/NULL, /*alpha*/true, /*interpolate*/false);
+pdfio_obj_t *img =
+    pdfioFileCreateImageObjFromData(pdf, data, /*width*/1024,
+                                    /*height*/1024, /*num_colors*/3,
+                                    /*color_data*/NULL, /*alpha*/true,
+                                    /*interpolate*/false);
 ```
 
 will create an object for a 1024x1024 RGBA image in memory, using the default
@@ -717,11 +734,19 @@ example:
 pdfio_file_t *pdf = pdfioFileCreate(...);
 
 // Create an AdobeRGB color array
-pdfio_array_t *adobe_rgb = pdfioArrayCreateColorFromMatrix(pdf, 3, pdfioAdobeRGBGamma, pdfioAdobeRGBMatrix, pdfioAdobeRGBWhitePoint);
+pdfio_array_t *adobe_rgb =
+    pdfioArrayCreateColorFromMatrix(pdf, 3, pdfioAdobeRGBGamma,
+                                    pdfioAdobeRGBMatrix,
+                                    pdfioAdobeRGBWhitePoint);
 
 // Create a 1024x1024 RGBA image using AdobeRGB
 unsigned char data[1024 * 1024 * 4]; // 1024x1024 RGBA image data
-pdfio_obj_t *img = pdfioFileCreateImageObjFromData(pdf, data, /*width*/1024, /*height*/1024, /*num_colors*/3, /*color_data*/adobe_rgb, /*alpha*/true, /*interpolate*/false);
+pdfio_obj_t *img =
+    pdfioFileCreateImageObjFromData(pdf, data, /*width*/1024,
+                                    /*height*/1024, /*num_colors*/3,
+                                    /*color_data*/adobe_rgb,
+                                    /*alpha*/true,
+                                    /*interpolate*/false);
 ```
 
 The "interpolate" argument specifies whether the colors in the image should be
@@ -733,7 +758,9 @@ function to copy the image into a PDF image object, for example:
 
 ```c
 pdfio_file_t *pdf = pdfioFileCreate(...);
-pdfio_obj_t *img = pdfioFileCreateImageObjFromFile(pdf, "myphoto.jpg", /*interpolate*/true);
+pdfio_obj_t *img =
+    pdfioFileCreateImageObjFromFile(pdf, "myphoto.jpg",
+                                    /*interpolate*/true);
 ```
 
 
@@ -856,7 +883,9 @@ show_pdf_info(const char *filename)
 
 
   // Open the PDF file with the default callbacks...
-  pdf = pdfioFileOpen(filename, /*password_cb*/NULL, /*password_cbdata*/NULL, /*error_cb*/NULL, /*error_cbdata*/NULL);
+  pdf = pdfioFileOpen(filename, /*password_cb*/NULL,
+                      /*password_cbdata*/NULL, /*error_cb*/NULL,
+                      /*error_cbdata*/NULL);
   if (pdf == NULL)
     return;
 
@@ -892,7 +921,8 @@ the page with the text centered below:
 
 
 void
-create_pdf_image_file(const char *pdfname, const char *imagename, const char *caption)
+create_pdf_image_file(const char *pdfname, const char *imagename,
+                      const char *caption)
 {
   pdfio_file_t   *pdf;
   pdfio_obj_t    *font;
@@ -905,7 +935,9 @@ create_pdf_image_file(const char *pdfname, const char *imagename, const char *ca
 
 
   // Create the PDF file...
-  pdf = pdfioFileCreate(pdfname, /*version*/NULL, /*media_box*/NULL, /*crop_box*/NULL, /*error_cb*/NULL, /*error_cbdata*/NULL);
+  pdf = pdfioFileCreate(pdfname, /*version*/NULL, /*media_box*/NULL,
+                        /*crop_box*/NULL, /*error_cb*/NULL,
+                        /*error_cbdata*/NULL);
 
   // Create a Courier base font for the caption
   font = pdfioFileCreateFontObjFromBase(pdf, "Courier");
@@ -925,9 +957,9 @@ create_pdf_image_file(const char *pdfname, const char *imagename, const char *ca
   width  = pdfioImageGetWidth(image);
   height = pdfioImageGetHeight(image);
 
-  // Default media_box is "universal" 595.28x792 points (8.27x11in or 210x279mm)
-  // Use margins of 36 points (0.5in or 12.7mm) with another 36 points for the
-  // caption underneath...
+  // Default media_box is "universal" 595.28x792 points (8.27x11in or
+  // 210x279mm).  Use margins of 36 points (0.5in or 12.7mm) with another
+  // 36 points for the caption underneath...
   swidth  = 595.28 - 72.0;
   sheight = swidth * height / width;
   if (sheight > (792.0 - 36.0 - 72.0))
@@ -944,8 +976,8 @@ create_pdf_image_file(const char *pdfname, const char *imagename, const char *ca
   // Draw the caption in black...
   pdfioContentSetFillColorDeviceGray(page, 0.0);
 
-  // Compute the starting point for the text - Courier is monospaced with a
-  // nominal width of 0.6 times the text height...
+  // Compute the starting point for the text - Courier is monospaced
+  // with a nominal width of 0.6 times the text height...
   tx = 0.5 * (595.28 - 18.0 * 0.6 * strlen(caption));
 
   // Position and draw the caption underneath...

examples/md2pdf.c

@@ -231,7 +231,7 @@ static void	add_links(docdata_t *dd);
 static pdfio_obj_t *find_image(docdata_t  *dd, const char *url, size_t *imagenum);
 static void	format_block(docdata_t *dd, mmd_t *block, docfont_t deffont, double fsize, double left, double right, const char *leader);
 static void	format_code(docdata_t *dd, mmd_t *block, double left, double right);
-static void	format_doc(docdata_t *dd, mmd_t *doc, double left, double right);
+static void	format_doc(docdata_t *dd, mmd_t *doc, docfont_t deffont, double left, double right);
 static void	format_table(docdata_t *dd, mmd_t *table, double left, double right);
 static void	make_target_name(char *dst, const char *src, size_t dstsize);
 static double	measure_cell(docdata_t *dd, mmd_t *cell, tablecol_t *col);
@@ -327,7 +327,7 @@ main(int  argc,				// I - Number of command-line arguments
   add_images(&dd, doc);
 
   // Parse the markdown document...
-  format_doc(&dd, doc, dd.art_box.x1, dd.art_box.x2);
+  format_doc(&dd, doc, DOCFONT_REGULAR, dd.art_box.x1, dd.art_box.x2);
 
   // Close the PDF and return...
   if (dd.st)
@@ -622,6 +622,15 @@ format_block(docdata_t  *dd,		// I - Document data
 
       render_line(dd, margin_left, margin_top, lineheight, num_frags, frags);
 
+      if (deffont == DOCFONT_ITALIC)
+      {
+        // Add a gray bar to the left of block quotes...
+        set_color(dd, DOCCOLOR_GREEN);
+        pdfioContentPathMoveTo(dd->st, left - 6.0, dd->y - (LINE_HEIGHT - 1.0) * fsize);
+        pdfioContentPathLineTo(dd->st, left - 6.0, dd->y + fsize);
+        pdfioContentStroke(dd->st);
+      }
+
       num_frags  = 0;
       frag       = frags;
       x          = left;
@@ -678,6 +687,15 @@ format_block(docdata_t  *dd,		// I - Document data
 
       render_line(dd, margin_left, margin_top, lineheight, num_frags, frags);
 
+      if (deffont == DOCFONT_ITALIC)
+      {
+        // Add a gray bar to the left of block quotes...
+        set_color(dd, DOCCOLOR_GREEN);
+        pdfioContentPathMoveTo(dd->st, left - 6.0, dd->y - (LINE_HEIGHT - 1.0) * fsize);
+        pdfioContentPathLineTo(dd->st, left - 6.0, dd->y + fsize);
+        pdfioContentStroke(dd->st);
+      }
+
       num_frags  = 0;
       frag       = frags;
       x          = left;
@@ -720,6 +738,15 @@ format_block(docdata_t  *dd,		// I - Document data
       margin_left = 0.0;
 
     render_line(dd, margin_left, margin_top, lineheight, num_frags, frags);
+
+    if (deffont == DOCFONT_ITALIC)
+    {
+      // Add a gray bar to the left of block quotes...
+      set_color(dd, DOCCOLOR_GREEN);
+      pdfioContentPathMoveTo(dd->st, left - 6.0, dd->y - (LINE_HEIGHT - 1.0) * fsize);
+      pdfioContentPathLineTo(dd->st, left - 6.0, dd->y + fsize);
+      pdfioContentStroke(dd->st);
+    }
   }
 }
 
@@ -759,7 +786,7 @@ format_code(docdata_t *dd,		// I - Document data
   for (code = mmdGetFirstChild(block); code; code = mmdGetNextSibling(code))
   {
     set_color(dd, DOCCOLOR_LTGRAY);
-    pdfioContentPathRect(dd->st, left - 3.0, dd->y - (LINE_HEIGHT - 1.0) * SIZE_CODEBLOCK, right - left + 3.0, lineheight);
+    pdfioContentPathRect(dd->st, left - 3.0, dd->y - (LINE_HEIGHT - 1.0) * SIZE_CODEBLOCK, right - left + 6.0, lineheight);
     pdfioContentFillAndStroke(dd->st, false);
 
     set_color(dd, DOCCOLOR_RED);
@@ -794,6 +821,7 @@ format_code(docdata_t *dd,		// I - Document data
 static void
 format_doc(docdata_t *dd,		// I - Document data
            mmd_t     *doc,		// I - Document node to format
+           docfont_t deffont,		// I - Default font
            double    left,		// I - Left margin
            double    right)		// I - Right margin
 {
@@ -823,7 +851,7 @@ format_doc(docdata_t *dd,		// I - Document data
           break;
 
       case MMD_TYPE_BLOCK_QUOTE :
-          format_doc(dd, current, left + 36.0, right - 36.0);
+          format_doc(dd, current, DOCFONT_ITALIC, left + 36.0, right - 36.0);
           break;
 
       case MMD_TYPE_ORDERED_LIST :
@@ -831,18 +859,18 @@ format_doc(docdata_t *dd,		// I - Document data
           if (dd->st)
             dd->y -= SIZE_BODY * LINE_HEIGHT;
 
-          format_doc(dd, current, left + 36.0, right);
+          format_doc(dd, current, deffont, left + 36.0, right);
           break;
 
       case MMD_TYPE_LIST_ITEM :
           if (doctype == MMD_TYPE_ORDERED_LIST)
           {
             snprintf(leader, sizeof(leader), "%d. ", i);
-            format_block(dd, current, DOCFONT_REGULAR, SIZE_BODY, left, right, leader);
+            format_block(dd, current, deffont, SIZE_BODY, left, right, leader);
           }
           else
           {
-            format_block(dd, current, DOCFONT_REGULAR, SIZE_BODY, left, right, /*leader*/"• ");
+            format_block(dd, current, deffont, SIZE_BODY, left, right, /*leader*/"• ");
           }
           break;
 
@@ -873,7 +901,7 @@ format_doc(docdata_t *dd,		// I - Document data
           break;
 
       case MMD_TYPE_PARAGRAPH :
-          format_block(dd, current, DOCFONT_REGULAR, SIZE_BODY, left, right, /*leader*/NULL);
+          format_block(dd, current, deffont, SIZE_BODY, left, right, /*leader*/NULL);
           break;
 
       case MMD_TYPE_TABLE :
@@ -1414,7 +1442,7 @@ render_line(docdata_t  *dd,		// I - Document data
       else
 	pdfioContentTextShow(dd->st, UNICODE_VALUE, frag->text);
 
-      if (frag->type == MMD_TYPE_LINKED_TEXT && frag->url && dd->num_links < DOCLINK_MAX)
+      if (frag->url && dd->num_links < DOCLINK_MAX)
       {
         doclink_t *l = dd->links + dd->num_links;
 					// Pointer to this link record

pdfio-base-font-widths.h

@@ -284,7 +284,7 @@ static short times_roman_widths[256] =
 };
 
 
-static short zapf_dingbats_widths[256] =
+static short zapfdingbats_widths[256] =
 {
   0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
   0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,

pdfio-content.c

@@ -1171,8 +1171,8 @@ pdfioContentTextMeasure(
       widths = times_italic_widths;
     else if (!strcmp(basefont, "Times-Roman"))
       widths = times_roman_widths;
-    else if (!strcmp(basefont, "Zapf-Dingbats"))
-      widths = zapf_dingbats_widths;
+    else if (!strcmp(basefont, "ZapfDingbats"))
+      widths = zapfdingbats_widths;
     else
       return (0.0);