mirror of
https://github.com/michaelrsweet/pdfio.git
synced 2024-12-26 05:18:21 +01:00
Save work on image support.
This commit is contained in:
Michael R Sweet
parent
a39b01ec9c
commit
dc65eb8d2f
@ -20,6 +20,11 @@
|
||||
#include <stdio.h>
|
||||
#include <stdlib.h>
|
||||
#include <string.h>
|
||||
#ifdef _WIN32
|
||||
# include <io.h>
|
||||
#else
|
||||
# include <unistd.h>
|
||||
#endif // _WIN32
|
||||
#include "mmd.h"
|
||||
#include <pdfio.h>
|
||||
#include <pdfio-content.h>
|
||||
@ -55,6 +60,14 @@ typedef struct docimage_s // Document image info
|
||||
|
||||
#define DOCIMAGE_MAX 1000 // Maximum number of images
|
||||
|
||||
typedef struct doclink_s // Document link info
|
||||
{
|
||||
const char *url; // Reference URL
|
||||
pdfio_rect_t box; // Link box
|
||||
} doclink_t;
|
||||
|
||||
#define DOCLINK_MAX 1000 // Maximum number of links/page
|
||||
|
||||
typedef struct docdata_s // Document formatting data
|
||||
{
|
||||
pdfio_file_t *pdf; // PDF file
|
||||
@ -69,6 +82,9 @@ typedef struct docdata_s // Document formatting data
|
||||
pdfio_stream_t *st; // Current page stream
|
||||
double y; // Current position on page
|
||||
doccolor_t color; // Current color
|
||||
pdfio_obj_t *annots; // Annotations object (for links)
|
||||
size_t num_links; // Number of links for this page
|
||||
doclink_t links[DOCLINK_MAX]; // Links for this page
|
||||
} docdata_t;
|
||||
|
||||
|
||||
@ -128,6 +144,90 @@ static const char * const docfont_names[] =
|
||||
#define UNICODE_VALUE true // `true` for Unicode text, `false` for ISO-8859-1
|
||||
|
||||
|
||||
//
|
||||
// 'mmd_walk_next()' - Find the next markdown node.
|
||||
//
|
||||
|
||||
static mmd_t * // O - Next node or `NULL` at end
|
||||
mmd_walk_next(mmd_t *top, // I - Top node
|
||||
mmd_t *node) // I - Current node
|
||||
{
|
||||
mmd_t *next, // Next node
|
||||
*parent; // Parent node
|
||||
|
||||
|
||||
// Figure out the next node under "top"...
|
||||
if ((next = mmdGetFirstChild(node)) == NULL)
|
||||
{
|
||||
if ((next = mmdGetNextSibling(node)) == NULL)
|
||||
{
|
||||
if ((parent = mmdGetParent(node)) != top)
|
||||
{
|
||||
while ((next = mmdGetNextSibling(parent)) == NULL)
|
||||
{
|
||||
if ((parent = mmdGetParent(parent)) == top)
|
||||
break;
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
return (next);
|
||||
}
|
||||
|
||||
|
||||
//
|
||||
// 'add_images()' - Scan the markdown document for images.
|
||||
//
|
||||
|
||||
static void
|
||||
add_images(docdata_t *dd, // I - Document data
|
||||
mmd_t *doc) // I - Markdown document
|
||||
{
|
||||
mmd_t *current, // Current node
|
||||
*next; // Next node
|
||||
|
||||
|
||||
// Scan the entire document for images...
|
||||
for (current = mmdGetFirstChild(doc); current; current = next)
|
||||
{
|
||||
// Get next node
|
||||
next = mmd_walk_next(doc, current);
|
||||
|
||||
// Look for image nodes...
|
||||
if (mmdGetType(current) == MMD_TYPE_IMAGE)
|
||||
{
|
||||
const char *url, // URL for image
|
||||
*ext; // Extension
|
||||
|
||||
url = mmdGetURL(current);
|
||||
ext = strrchr(url, '.');
|
||||
|
||||
fprintf(stderr, "IMAGE(%s), ext=\"%s\"\n", url, ext);
|
||||
|
||||
if (!access(url, 0) && ext && (!strcmp(ext, ".png") || !strcmp(ext, ".jpg") || !strcmp(ext, ".jpeg")))
|
||||
{
|
||||
// Local JPEG or PNG file, so add it if we haven't already...
|
||||
size_t i; // Looping var
|
||||
|
||||
for (i = 0; i < dd->num_images; i ++)
|
||||
{
|
||||
if (!strcmp(dd->images[i].url, url))
|
||||
break;
|
||||
}
|
||||
|
||||
if (i >= dd->num_images && dd->num_images < DOCIMAGE_MAX)
|
||||
{
|
||||
dd->images[i].url = url;
|
||||
if ((dd->images[i].obj = pdfioFileCreateImageObjFromFile(dd->pdf, url, false)) != NULL)
|
||||
dd->num_images ++;
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
//
|
||||
// 'set_color()' - Set the stroke and fill color.
|
||||
//
|
||||
@ -286,10 +386,13 @@ format_block(docdata_t *dd, // I - Document data
|
||||
const char *curtext, // Current text
|
||||
*cururl; // Current URL, if any
|
||||
bool curws; // Current whitespace
|
||||
pdfio_obj_t *curimage; // Current image, if any
|
||||
char curimagename[32]; // Current image name
|
||||
docfont_t curface, // Current font face
|
||||
prevface; // Previous font face
|
||||
double x, y; // Current position
|
||||
double width, // Width of current fragment
|
||||
height, // Height of current fragment
|
||||
lwidth, // Leader width
|
||||
wswidth; // Width of whitespace
|
||||
doccolor_t color; // Color of text
|
||||
@ -329,32 +432,35 @@ format_block(docdata_t *dd, // I - Document data
|
||||
// Get information about the current node...
|
||||
curtype = mmdGetType(current);
|
||||
curtext = mmdGetText(current);
|
||||
curimage = NULL;
|
||||
curimagename[0] = '\0';
|
||||
cururl = mmdGetURL(current);
|
||||
curws = mmdGetWhitespace(current);
|
||||
next = mmd_walk_next(block, current);
|
||||
|
||||
// fprintf(stderr, "current=%p, curtype=%d, curtext=\"%s\", cururl=\"%s\", curws=%s\n", (void *)current, curtype, curtext, cururl, curws ? "true" : "false");
|
||||
// Process the node...
|
||||
if (curtype == MMD_TYPE_IMAGE && cururl)
|
||||
{
|
||||
// Embed an image
|
||||
size_t i; // Looping var
|
||||
|
||||
// Figure out the next node under this block...
|
||||
if ((next = mmdGetFirstChild(current)) == NULL)
|
||||
for (i = 0; i < dd->num_images; i ++)
|
||||
{
|
||||
if ((next = mmdGetNextSibling(current)) == NULL)
|
||||
if (!strcmp(dd->images[i].url, cururl))
|
||||
{
|
||||
mmd_t *parent; // Parent node
|
||||
|
||||
if ((parent = mmdGetParent(current)) != block)
|
||||
{
|
||||
while ((next = mmdGetNextSibling(parent)) == NULL)
|
||||
{
|
||||
if ((parent = mmdGetParent(parent)) == block)
|
||||
curimage = dd->images[i].obj;
|
||||
snprintf(curimagename, sizeof(curimagename), "I%u", (unsigned)i);
|
||||
break;
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
// Process the node...
|
||||
if (!curtext)
|
||||
if (!curimage)
|
||||
continue;
|
||||
}
|
||||
else if (!curtext)
|
||||
{
|
||||
continue;
|
||||
}
|
||||
|
||||
if (curtype == MMD_TYPE_EMPHASIZED_TEXT)
|
||||
curface = DOCFONT_ITALIC;
|
||||
@ -372,7 +478,52 @@ format_block(docdata_t *dd, // I - Document data
|
||||
else
|
||||
color = DOCCOLOR_BLACK;
|
||||
|
||||
if (curimage)
|
||||
{
|
||||
// Image - treat as 100dpi
|
||||
width = 72.0 * pdfioImageGetWidth(curimage) / 100.0;
|
||||
height = 72.0 * pdfioImageGetHeight(curimage) / 100.0;
|
||||
|
||||
if (width > (right - left))
|
||||
{
|
||||
// Too wide, scale to width...
|
||||
width = right - left;
|
||||
height = width * pdfioImageGetHeight(curimage) / pdfioImageGetWidth(curimage);
|
||||
}
|
||||
else if (height > (dd->art_box.y2 - dd->art_box.y1))
|
||||
{
|
||||
// Too tall, scale to height...
|
||||
height = dd->art_box.y2 - dd->art_box.y1;
|
||||
width = height * pdfioImageGetWidth(curimage) / pdfioImageGetHeight(curimage);
|
||||
}
|
||||
|
||||
if (x <= left)
|
||||
{
|
||||
y -= height - fontsize * LINE_HEIGHT;
|
||||
|
||||
if (prevface != DOCFONT_MAX)
|
||||
{
|
||||
pdfioContentTextEnd(dd->st);
|
||||
prevface = DOCFONT_MAX;
|
||||
}
|
||||
|
||||
if (y < dd->art_box.y1)
|
||||
{
|
||||
// New page...
|
||||
new_page(dd);
|
||||
|
||||
x = left;
|
||||
y = dd->y - height;
|
||||
}
|
||||
}
|
||||
}
|
||||
else
|
||||
{
|
||||
// Text fragment...
|
||||
width = pdfioContentTextMeasure(dd->fonts[curface], curtext, fontsize);
|
||||
height = fontsize * LINE_HEIGHT;
|
||||
}
|
||||
|
||||
if (curws)
|
||||
wswidth = pdfioContentTextMeasure(dd->fonts[curface], " ", fontsize);
|
||||
else
|
||||
@ -382,7 +533,7 @@ format_block(docdata_t *dd, // I - Document data
|
||||
{
|
||||
// New line...
|
||||
x = left;
|
||||
y -= fontsize * LINE_HEIGHT;
|
||||
y -= height;
|
||||
|
||||
if (y < dd->art_box.y1)
|
||||
{
|
||||
@ -395,7 +546,7 @@ format_block(docdata_t *dd, // I - Document data
|
||||
|
||||
new_page(dd);
|
||||
|
||||
y = dd->y - fontsize * LINE_HEIGHT;
|
||||
y = dd->y - height;
|
||||
}
|
||||
else
|
||||
{
|
||||
@ -404,6 +555,22 @@ format_block(docdata_t *dd, // I - Document data
|
||||
}
|
||||
}
|
||||
|
||||
fprintf(stderr, "curtext=\"%s\", curimage=\"%s\", x=%g, y=%g, width=%g, height=%g\n", curtext, curimagename, x, y, width, height);
|
||||
|
||||
if (curimage)
|
||||
{
|
||||
// Image
|
||||
if (prevface != DOCFONT_MAX)
|
||||
{
|
||||
pdfioContentTextEnd(dd->st);
|
||||
prevface = DOCFONT_MAX;
|
||||
}
|
||||
|
||||
pdfioContentDrawImage(dd->st, curimagename, x, y, width, height);
|
||||
}
|
||||
else
|
||||
{
|
||||
// Text
|
||||
if (curface != prevface)
|
||||
{
|
||||
if (prevface == DOCFONT_MAX)
|
||||
@ -428,6 +595,7 @@ format_block(docdata_t *dd, // I - Document data
|
||||
pdfioContentTextShow(dd->st, UNICODE_VALUE, curtext);
|
||||
x += width;
|
||||
}
|
||||
}
|
||||
|
||||
if (blocktype == MMD_TYPE_CODE_BLOCK)
|
||||
{
|
||||
@ -632,6 +800,9 @@ main(int argc, // I - Number of command-line arguments
|
||||
return (1);
|
||||
}
|
||||
|
||||
// Add images...
|
||||
add_images(&dd, doc);
|
||||
|
||||
// Parse the markdown document...
|
||||
format_doc(&dd, doc, dd.art_box.x1, dd.art_box.x2);
|
||||
|
||||
|
||||
235
examples/md2pdf.md
Normal file
235
examples/md2pdf.md
Normal file
@ -0,0 +1,235 @@
|
||||
---
|
||||
title: Mini-Markdown Test Document
|
||||
...
|
||||
|
||||
All heading levels are supported from 1 to 6, using both the ATX and Setext
|
||||
forms. As an indented code block:
|
||||
|
||||
# Heading 1
|
||||
## Heading 2
|
||||
### Heading 3
|
||||
#### Heading 4
|
||||
##### Heading 5
|
||||
###### Heading 6
|
||||
|
||||
Setext Heading 1
|
||||
================
|
||||
|
||||
Setext Heading 2
|
||||
----------------
|
||||
|
||||
As block headings:
|
||||
|
||||
# Heading 1
|
||||
## Heading 2
|
||||
### Heading 3
|
||||
#### Heading 4
|
||||
##### Heading 5
|
||||
###### Heading 6
|
||||
|
||||
Setext Heading 1
|
||||
================
|
||||
|
||||
Setext Heading 2
|
||||
----------------
|
||||
|
||||
And block quotes:
|
||||
|
||||
> # BQ Heading 1
|
||||
> ## BQ Heading 2
|
||||
> ### BQ Heading 3
|
||||
> #### BQ Heading 4
|
||||
> ##### BQ Heading 5
|
||||
> ###### BQ Heading 6
|
||||
>
|
||||
> Setext Heading 1
|
||||
> ================
|
||||
>
|
||||
> Setext Heading 2
|
||||
> ----------------
|
||||
|
||||
And ordered lists:
|
||||
|
||||
1. First item.
|
||||
|
||||
2. Second item.
|
||||
|
||||
3. Third item with very long text that wraps
|
||||
across multiple lines.
|
||||
|
||||
With a secondary paragraph associated with
|
||||
the third item.
|
||||
|
||||
And unordered lists:
|
||||
|
||||
- First item.
|
||||
|
||||
+ Second item.
|
||||
|
||||
* Third item.
|
||||
|
||||
* [ ] Fourth item (unchecked)
|
||||
|
||||
- [x] Fifth item (checked)
|
||||
|
||||
Code block with `\``:
|
||||
|
||||
```
|
||||
#include <stdio.h>
|
||||
|
||||
int main(void)
|
||||
{
|
||||
puts("Hello, World!");
|
||||
return (0);
|
||||
}
|
||||
~~~
|
||||
```
|
||||
|
||||
Code block with `~`:
|
||||
|
||||
~~~
|
||||
#include <stdio.h>
|
||||
|
||||
int main(void)
|
||||
{
|
||||
puts("Hello, World!");
|
||||
return (0);
|
||||
}
|
||||
```
|
||||
~~~
|
||||
|
||||
Link to [mmd web site](https://michaelrsweet.github.io/mmd).
|
||||
|
||||
Normal link to [Heading 1](@).
|
||||
|
||||
Code link to [`Heading 2`](@).
|
||||
|
||||
Inner emphasized link to [*Heading 3*](@).
|
||||
|
||||
Outer emphasized link to *[Heading 3](@)*.
|
||||
|
||||
Inner strong link to [**Heading 4**](@).
|
||||
|
||||
Outer strong link to **[Heading 4](@)**.
|
||||
|
||||
Implicit link to [reference1][].
|
||||
|
||||
Shortcut link to [reference1] without a link title.
|
||||
|
||||
[reference1]: https://michaelrsweet.github.io/mmd 'MMD Home Page'
|
||||
|
||||
[reference2]: https://michaelrsweet.github.io/mmd/mmd.html 'MMD Documentation'
|
||||
|
||||
[reference3]: https://michaelrsweet.github.io/mmd/mmd-160.png "MMD Logo"
|
||||
|
||||
Link to [mmd web site][reference1] works.
|
||||
Link to [mmd documentation][reference2] works.
|
||||
Link to ![mmd logo][reference3] image.
|
||||
Link to [bad reference][reference4] doesn't work.
|
||||
|
||||
Autolink to <https://michaelrsweet.github.io/mmd>.
|
||||
|
||||
Autolink in parenthesis (<https://michaelrsweet.github.io/mmd>).
|
||||
|
||||
[Link broken
|
||||
across two lines](https://michaelrsweet.github.io/mmd)
|
||||
|
||||
Color JPEG Image: 
|
||||
Grayscale JPEG Image: 
|
||||
Color PNG Image: 
|
||||
Grayscale PNG Image: 
|
||||
Indexed PNG Image: 
|
||||
|
||||
This sentence contains *Emphasized Text*, **Bold Text**, and `Code Text` for
|
||||
testing the MMD parser. The `<mmd.h>` header file.
|
||||
|
||||
This sentence contains _Emphasized Text_, __Bold Text__, and
|
||||
~~Strikethrough Text~~ for testing the MMD parser.
|
||||
|
||||
*Emphasized Text Split
|
||||
Across Two Lines*
|
||||
|
||||
**Bold Text Split
|
||||
Across Two Lines**
|
||||
|
||||
`Code Text Split
|
||||
Across Two lines`
|
||||
|
||||
_Emphasized Text Split
|
||||
Across Two Lines_
|
||||
|
||||
__Bold Text Split
|
||||
Across Two Lines__
|
||||
|
||||
~~Strikethrough Text Split
|
||||
Across Two Lines~~
|
||||
|
||||
All work and no play makes Johnny a dull boy.
|
||||
All work and no play makes Johnny a dull boy.
|
||||
All work and no play makes Johnny a dull boy.
|
||||
|
||||
All work and no play makes Johnny a dull boy.
|
||||
All work and no play makes Johnny a dull boy.
|
||||
All work and no play makes Johnny a dull boy.
|
||||
|
||||
\(Escaped Parenthesis)
|
||||
|
||||
\(*Emphasized Parenthesis*)
|
||||
|
||||
\(**Boldface Parenthesis**)
|
||||
|
||||
\(`Code Parenthesis`)
|
||||
|
||||
Escaped backtick (`\``)
|
||||
|
||||
Table as code:
|
||||
|
||||
| Heading 1 | Heading 2 | Heading 3 |
|
||||
| --------- | --------- | --------- |
|
||||
| Cell 1,1 | Cell 1,2 | Cell 1,3 |
|
||||
| Cell 2,1 | Cell 2,2 | Cell 2,3 |
|
||||
| Cell 3,1 | Cell 3,2 | Cell 3,3 |
|
||||
|
||||
Table with leading/trailing pipes:
|
||||
|
||||
| Heading 1 | Heading 2 | Heading 3 |
|
||||
| --------- | --------- | --------- |
|
||||
| Cell 1,1 | Cell 1,2 | Cell 1,3 |
|
||||
| Cell 2,1 | Cell 2,2 | Cell 2,3 |
|
||||
| Cell 3,1 | Cell 3,2 | Cell 3,3 |
|
||||
|
||||
Table without leading/trailing pipes:
|
||||
|
||||
Heading 1 | Heading 2 | Heading 3
|
||||
--------- | --------- | ---------
|
||||
Cell 1,1 | Cell 1,2 | Cell 1,3
|
||||
Cell 2,1 | Cell 2,2 | Cell 2,3
|
||||
Cell 3,1 | Cell 3,2 | Cell 3,3
|
||||
|
||||
Table with alignment:
|
||||
|
||||
Left Alignment | Center Alignment | Right Alignment
|
||||
:-------- | :-------: | --------:
|
||||
Cell 1,1 | Cell 1,2 | 1
|
||||
Cell 2,1 | Cell 2,2 | 12
|
||||
Cell 3,1 | Cell 3,2 | 123
|
||||
|
||||
Table in block quote:
|
||||
|
||||
> Heading 1 | Heading 2 | Heading 3
|
||||
> --------- | --------- | ---------
|
||||
> Cell 1,1 | Cell 1,2 | Cell 1,3
|
||||
> Cell 2,1 | Cell 2,2 | Cell 2,3
|
||||
> Cell 3,1 | Cell 3,2 | Cell 3,3
|
||||
|
||||
# Tests for Bugs/Edge Cases
|
||||
|
||||
Paragraph with "|" that should not
|
||||
be interpreted as a table.
|
||||
|
||||
code before a bulleted list
|
||||
|
||||
- First item
|
||||
- Second item
|
||||
- Some pathological nested link and inline style features supported by
|
||||
CommonMark like "`******Really Strong Text******`".
|
||||
Loading…
Reference in New Issue
Block a user