hpdf.js

Create PDFs in your browser (port of libharu) See the demo page

Why?

Because other projects with the same goal lack a lot of features (e.g. custom fonts).

Features

• Custom Fonts (Type1 and TTF)
• PNG, JPG and RAW images
• Password encryption
• Text and Link Annotations
• Outlines
• Drawing function (lines, cycles etc.)
• Encoding support

How to use

Include hpdf.js or hpdf.min.js in your HTML file and see examples or libharu API reference

API naming convention

• Function names are like their libharu API pendants but object-oriented and their first letter is lowercase.

    // javascript code                           // C code
    var pdf = new HPDF();                        HPDF_Doc pdf = HPDF_New (error_handler, NULL);
    var page = pdf.addPage();                    HPDF_Page page = HPDF_AddPage(pdf);
    pdf.free();                                  HPDF_Free(pdf);

• Get in the function name is ommitted and Set is kept

    // javascript code                           // C code
    var width = page.width();                    HPDF_REAL width = HPDF_Page_GetWidth(page);
    page.setLineWidth(5);                        HPDF_Page_SetLineWidth(page, 5);

• Use undefined in Javascript where you would use NULL in C

    // javascript code                           // C code
    var root = pdf.createOutline(undefined,      root = HPDF_CreateOutline (pdf, NULL, "OutlineRoot", NULL);
       "OutlineRoot", undefined);

• Use strings (case irrelevant) in Javascript where you would use constants in C

    // javascript code                           // C code
    page.setSize('B5', 'landscape');             HPDF_Page_SetSize(page, HPDF_PAGE_SIZE_B5, HPDF_PAGE_LANDSCAPE);

• Tailing NULL/undefined can be ommitted

    // javascript code                           // C code
    var font = pdf.font('Helvetica');            HPDF_Font font = HPDF_PDF_GetFont(pdf, 'Helvetica', NULL);

• Instead of the error handling function in C Exceptions are thrown in Javascript

Dependencies

None. You just need emscripten and CoffeeScript if you want to help developing hpdf.js

How to compile (for devs only)

1. Configure libhaku cmake ./libharu

2. Configure libpng cd ./libpng; cmake .; cd ..

3. Compile hpdf.js ./compile.sh (You might want to change some paths in this bash script!)