dany/pdfio
1
0
Fork 0
mirror of https://github.com/michaelrsweet/pdfio.git synced 2025-07-13 06:24:25 +02:00
Code Issues Packages Projects Releases Wiki Activity

Finalize md2pdf example docos.

Browse Source
This commit is contained in:
Michael R Sweet
2024-12-22 12:09:03 -05:00
parent 5dc68f3285
commit aa91b141a8
4 changed files with 1948 additions and 649 deletions
Download Patch File Download Diff File Expand all files Collapse all files

83
examples/md2pdf.c
View File

@ -218,6 +218,8 @@ static const char * const docfont_names[] =
#define LINE_HEIGHT 1.4 // Multiplier for line height
#define LIST_PADDING 36.0 // Padding/indentation for lists
#define SIZE_BODY 11.0 // Size of body text (points)
#define SIZE_CODEBLOCK 10.0 // Size of code block text (points)
#define SIZE_HEADFOOT 9.0 // Size of header/footer text (points)
@ -260,7 +262,7 @@ static double measure_cell(docdata_t *dd, mmd_t *cell, tablecol_t *col);
static mmd_t *mmd_walk_next(mmd_t *top, mmd_t *node);
static void new_page(docdata_t *dd);
static ssize_t output_cb(void *output_cbdata, const void *buffer, size_t bytes);
static void render_line(docdata_t *dd, double margin_left, double margin_top, double need_bottom, double lineheight, size_t num_frags, linefrag_t *frags);
static void render_line(docdata_t *dd, double margin_left, double need_bottom, double lineheight, size_t num_frags, linefrag_t *frags);
static void render_row(docdata_t *dd, size_t num_cols, tablecol_t *cols, tablerow_t *row);
static void set_color(docdata_t *dd, doccolor_t color);
static void set_font(docdata_t *dd, docfont_t font, double fsize);
@ -578,7 +580,6 @@ format_block(docdata_t *dd, // I - Document data
width, // Width of current fragment
wswidth, // Width of whitespace
margin_left, // Left margin
margin_top, // Top margin
need_bottom, // Space needed after this block
height, // Height of current fragment
lineheight; // Height of current line
@ -586,11 +587,6 @@ format_block(docdata_t *dd, // I - Document data
blocktype = mmdGetType(block);
if ((blocktype >= MMD_TYPE_TABLE_HEADER_CELL && blocktype <= MMD_TYPE_TABLE_BODY_CELL_RIGHT) || blocktype == MMD_TYPE_LIST_ITEM)
margin_top = 0.0;
else
margin_top = fsize * LINE_HEIGHT;
if (mmdGetNextSibling(block))
need_bottom = 3.0 * SIZE_BODY * LINE_HEIGHT;
else
@ -669,7 +665,7 @@ format_block(docdata_t *dd, // I - Document data
else
margin_left = 0.0;
render_line(dd, margin_left, margin_top, need_bottom, lineheight, num_frags, frags);
render_line(dd, margin_left, need_bottom, lineheight, num_frags, frags);
if (deffont == DOCFONT_ITALIC)
{
@ -683,7 +679,6 @@ format_block(docdata_t *dd, // I - Document data
frag = frags;
x = left;
lineheight = 0.0;
margin_top = 0.0;
need_bottom = 0.0;
continue;
@ -731,7 +726,13 @@ format_block(docdata_t *dd, // I - Document data
else
margin_left = 0.0;
render_line(dd, margin_left, margin_top, need_bottom, lineheight, num_frags, frags);
render_line(dd, margin_left, need_bottom, lineheight, num_frags, frags);
num_frags = 0;
frag = frags;
x = left;
lineheight = 0.0;
need_bottom = 0.0;
if (deffont == DOCFONT_ITALIC)
{
@ -744,18 +745,12 @@ format_block(docdata_t *dd, // I - Document data
pdfioContentStroke(dd->st);
pdfioContentRestore(dd->st);
}
num_frags = 0;
frag = frags;
x = left;
lineheight = 0.0;
margin_top = 0.0;
need_bottom = 0.0;
}
// Add the current node to the fragment list
if (num_frags == 0)
{
// No leading whitespace at the start of the line
ws = false;
wswidth = 0.0;
}
@ -787,7 +782,7 @@ format_block(docdata_t *dd, // I - Document data
else
margin_left = 0.0;
render_line(dd, margin_left, margin_top, need_bottom, lineheight, num_frags, frags);
render_line(dd, margin_left, need_bottom, lineheight, num_frags, frags);
if (deffont == DOCFONT_ITALIC)
{
@ -815,23 +810,17 @@ format_code(docdata_t *dd, // I - Document data
double right) // I - Right margin
{
mmd_t *code; // Current code block
double lineheight, // Line height
margin_top; // Top margin
double lineheight; // Line height
// Compute line height and initial top margin...
// Compute line height...
lineheight = SIZE_CODEBLOCK * LINE_HEIGHT;
margin_top = lineheight;
// Start a new page as needed...
if (!dd->st)
{
new_page(dd);
margin_top = 0.0;
}
dd->y -= lineheight + margin_top + CODE_PADDING;
dd->y -= lineheight + CODE_PADDING;
if ((dd->y - lineheight) < dd->art_box.y1)
{
@ -934,10 +923,9 @@ format_doc(docdata_t *dd, // I - Document data
case MMD_TYPE_ORDERED_LIST :
case MMD_TYPE_UNORDERED_LIST :
if (dd->st)
dd->y -= SIZE_BODY * LINE_HEIGHT;
dd->y -= SIZE_BODY * LINE_HEIGHT;
format_doc(dd, current, deffont, left + 36.0, right);
format_doc(dd, current, deffont, left + LIST_PADDING, right);
break;
case MMD_TYPE_LIST_ITEM :
@ -958,12 +946,17 @@ format_doc(docdata_t *dd, // I - Document data
case MMD_TYPE_HEADING_4 :
case MMD_TYPE_HEADING_5 :
case MMD_TYPE_HEADING_6 :
// Update the current heading
free(dd->heading);
dd->heading = mmdCopyAllText(current);
// Add a blank line before the heading...
dd->y -= heading_sizes[curtype - MMD_TYPE_HEADING_1] * LINE_HEIGHT;
// Format the heading...
format_block(dd, current, DOCFONT_BOLD, heading_sizes[curtype - MMD_TYPE_HEADING_1], left, right, /*leader*/NULL);
// Add the heading to the table-of-contents...
if (dd->num_toc < DOCTOC_MAX)
{
doctoc_t *t = dd->toc + dd->num_toc;
@ -987,6 +980,7 @@ format_doc(docdata_t *dd, // I - Document data
dd->num_toc ++;
}
// Add the heading to the list of link targets...
if (dd->num_targets < DOCTARGET_MAX)
{
doctarget_t *t = dd->targets + dd->num_targets;
@ -1001,14 +995,26 @@ format_doc(docdata_t *dd, // I - Document data
break;
case MMD_TYPE_PARAGRAPH :
// Add a blank line before the paragraph...
dd->y -= SIZE_BODY * LINE_HEIGHT;
// Format the paragraph...
format_block(dd, current, deffont, SIZE_BODY, left, right, /*leader*/NULL);
break;
case MMD_TYPE_TABLE :
// Add a blank line before the paragraph...
dd->y -= SIZE_BODY * LINE_HEIGHT;
// Format the table...
format_table(dd, current, left, right);
break;
case MMD_TYPE_CODE_BLOCK :
// Add a blank line before the code block...
dd->y -= SIZE_BODY * LINE_HEIGHT;
// Format the code block...
format_code(dd, current, left + CODE_PADDING, right - CODE_PADDING);
break;
}
@ -1043,14 +1049,10 @@ format_table(docdata_t *dd, // I - Document data
// Find all of the rows and columns in the table...
num_cols = num_rows = 0;
memset(cols, 0, sizeof(cols));
memset(rows, 0, sizeof(rows));
rowptr = rows;
for (current = mmdGetFirstChild(table); current && num_rows < TABLEROW_MAX; current = next)
for (num_cols = 0, num_rows = 0, rowptr = rows, current = mmdGetFirstChild(table); current && num_rows < TABLEROW_MAX; current = next)
{
next = mmd_walk_next(table, current);
type = mmdGetType(current);
@ -1142,9 +1144,6 @@ format_table(docdata_t *dd, // I - Document data
}
// Render each table row...
if (dd->st)
dd->y -= SIZE_TABLE * LINE_HEIGHT;
for (row = 0, rowptr = rows; row < num_rows; row ++, rowptr ++)
render_row(dd, num_cols, cols, rowptr);
}
@ -1471,7 +1470,6 @@ output_cb(void *output_cbdata, // I - Callback data (not used)
static void
render_line(docdata_t *dd, // I - Document data
double margin_left, // I - Left margin
double margin_top, // I - Top margin
double need_bottom, // I - How much space is needed after
double lineheight, // I - Height of line
size_t num_frags, // I - Number of line fragments
@ -1483,12 +1481,9 @@ render_line(docdata_t *dd, // I - Document data
if (!dd->st)
{
new_page(dd);
margin_top = 0.0;
}
dd->y -= margin_top + lineheight;
dd->y -= lineheight;
if ((dd->y - need_bottom) < dd->art_box.y1)
{
new_page(dd);