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SVG to Cairo code converter.

C 18.25% Lua 81.75%

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svg2cairo's Issues

Gradient on Stroke doesn't work correctly

Hello akrinke:

Stll enjoying this program immensly. being able to make cairo code WYSIWYG style with inkscape is wonderful! However I finally figured out why some of my drawings didn't translate correctly. When a stroke has a gradient (linear or radial) it gets messed up. For example this stroke:

 /********************/
cairo_set_operator(cr, CAIRO_OPERATOR_OVER);
cairo_set_line_width(cr, 1.5);
cairo_set_miter_limit(cr, 4);
cairo_set_line_cap(cr, CAIRO_LINE_CAP_BUTT);
cairo_set_line_join(cr, CAIRO_LINE_JOIN_MITER);
pattern = cairo_pattern_create_linear(943.0932, 475.09332, 922.98602, 448.48618);
cairo_pattern_add_color_stop_rgba(pattern, 0,0,0,0,1);
cairo_pattern_add_color_stop_rgba(pattern, 1,1,1,1,1);
cairo_matrix_init(&matrix, 1,0,0,1,924.164629,451.302032);
cairo_pattern_set_matrix(pattern, &matrix);
cairo_pattern_set_extend(pattern, CAIRO_EXTEND_PAD);
cairo_pattern_set_filter(pattern, CAIRO_FILTER_GOOD);
cairo_set_source(cr, pattern);
cairo_pattern_destroy(pattern);
cairo_new_path(cr);
cairo_move_to(cr, 3.527344, 0.753906);
cairo_line_to(cr, 17.972656, 0.753906);
cairo_curve_to(cr, 19.507812, 0.753906, 20.75, 2, 20.75, 3.535156);
cairo_line_to(cr, 20.75, 17.976562);
cairo_curve_to(cr, 20.75, 19.511719, 19.507812, 20.753906, 17.972656, 20.753906);
cairo_line_to(cr, 3.527344, 20.753906);
cairo_curve_to(cr, 1.992188, 20.753906, 0.75, 19.511719, 0.75, 17.976562);
cairo_line_to(cr, 0.75, 3.535156);
cairo_curve_to(cr, 0.75, 2, 1.992188, 0.753906, 3.527344, 0.753906);
cairo_close_path(cr);
cairo_set_tolerance(cr, 0.1);
cairo_set_antialias(cr, CAIRO_ANTIALIAS_DEFAULT);
cairo_matrix_init(&matrix, 1,0,0,1,-915.02844,-473.718751);
cairo_pattern_set_matrix(pattern, &matrix);
cairo_stroke_preserve(cr); 
 /********************/

the 3rd and 4th to last lines create a new matrix and set the pattern which has already been destroyed. I'm not sure what the result is other than the gradient seems to be shifted such that only the last stop is shown in the stroke. Commenting these two lines out gives the desired behaviour.

For now I am just doing it manually, no problem, but I figured you'd appreciate a bug report.

On an unrealated issue, I see the code always uses stroke_preserve and fill_preserve but when an object is filled and stroked a new identical path is created anyway. I don't know if that results in performance loss or not, but it seems inefficient.

THANK YOU!!!

C function written with undefined symbol

Hello,
I'm using svg2cairo to convert widgets I drew in inkscape to C code. This works great, but I found an issue that probably is more related to some lua library. I'm not familiar with lua so I can't tell.
What happens is that after every object is drawn the command cairo_set_antialias() is called with argument CAIRO_DEFAULT which isn't defined in cairo. I'm fairly confident it was intended to be CAIRO_ANTIALIAS_DEFAULT which is defined. Its easy for me to fix and work around, but if you can fix it, it would make it work perfectly for me!

Thanks for a great program!

SVGs with blur create broken code

Me again:

I meant to file this one earlier. I found that if I have blur in something in inkscape, svg2cairo doesn't gracefully ignore it, rather it creates uncompilable code. I know blur isn't supported yet in cairo (I'm applying it manually later) but it would be nice to not need to have a extra step removing it. Here is an example svg:

<?xml version="1.0" encoding="UTF-8" standalone="no"?>
<!-- Created with Inkscape (http://www.inkscape.org/) -->

<svg
   xmlns:dc="http://purl.org/dc/elements/1.1/"
   xmlns:cc="http://creativecommons.org/ns#"
   xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#"
   xmlns:svg="http://www.w3.org/2000/svg"
   xmlns="http://www.w3.org/2000/svg"
   xmlns:xlink="http://www.w3.org/1999/xlink"
   xmlns:sodipodi="http://sodipodi.sourceforge.net/DTD/sodipodi-0.dtd"
   xmlns:inkscape="http://www.inkscape.org/namespaces/inkscape"
   width="26.299999"
   height="26.299999"
   id="svg8365"
   version="1.1"
   inkscape:version="0.48.4 r9939"
   sodipodi:docname="MWE.svg">
  <defs
     id="defs8367">
    <linearGradient
       inkscape:collect="always"
       xlink:href="#linearGradient4200"
       id="linearGradient5888"
       gradientUnits="userSpaceOnUse"
       gradientTransform="matrix(0.1558885,0,0,0.53769429,142.55874,116.2103)"
       x1="128.75"
       y1="337.91769"
       x2="128.75"
       y2="355.34933" />
    <linearGradient
       id="linearGradient4200">
      <stop
         id="stop4202"
         style="stop-color:#ff0000;stop-opacity:0"
         offset="0" />
      <stop
         id="stop4204"
         style="stop-color:#ff0000;stop-opacity:1"
         offset="0.21795145" />
      <stop
         id="stop4206"
         style="stop-color:#ff0000;stop-opacity:1"
         offset="0.77006018" />
      <stop
         id="stop4208"
         style="stop-color:#ff0000;stop-opacity:0"
         offset="1" />
    </linearGradient>
    <linearGradient
       id="linearGradient5847">
      <stop
         style="stop-color:#000000;stop-opacity:1;"
         offset="0"
         id="stop5849" />
      <stop
         style="stop-color:#ffffff;stop-opacity:1;"
         offset="1"
         id="stop5851" />
    </linearGradient>
    <linearGradient
       inkscape:collect="always"
       xlink:href="#linearGradient5839"
       id="linearGradient5884"
       gradientUnits="userSpaceOnUse"
       gradientTransform="translate(-9.1361885,22.416719)"
       x1="943.0932"
       y1="475.09332"
       x2="922.98602"
       y2="448.48618" />
    <linearGradient
       id="linearGradient5839">
      <stop
         style="stop-color:#000000;stop-opacity:1;"
         offset="0"
         id="stop5841" />
      <stop
         style="stop-color:#ffffff;stop-opacity:1;"
         offset="1"
         id="stop5843" />
    </linearGradient>
    <filter
       inkscape:collect="always"
       id="filter3785"
       x="-0.12"
       width="1.24"
       y="-0.12"
       height="1.24"
       color-interpolation-filters="sRGB">
      <feGaussianBlur
         inkscape:collect="always"
         stdDeviation="1"
         id="feGaussianBlur3787" />
    </filter>
  </defs>
  <sodipodi:namedview
     id="base"
     pagecolor="#ffffff"
     bordercolor="#666666"
     borderopacity="1.0"
     inkscape:pageopacity="0.0"
     inkscape:pageshadow="2"
     inkscape:zoom="5.6"
     inkscape:cx="-17.574422"
     inkscape:cy="6.0524942"
     inkscape:document-units="px"
     inkscape:current-layer="layer1"
     showgrid="false"
     fit-margin-top="0"
     fit-margin-left="0"
     fit-margin-right="0"
     fit-margin-bottom="0"
     inkscape:window-width="1596"
     inkscape:window-height="861"
     inkscape:window-x="0"
     inkscape:window-y="18"
     inkscape:window-maximized="0" />
  <metadata
     id="metadata8370">
    <rdf:RDF>
      <cc:Work
         rdf:about="">
        <dc:format>image/svg+xml</dc:format>
        <dc:type
           rdf:resource="http://purl.org/dc/dcmitype/StillImage" />
        <dc:title></dc:title>
      </cc:Work>
    </rdf:RDF>
  </metadata>
  <g
     inkscape:label="Layer 1"
     inkscape:groupmode="layer"
     id="layer1"
     transform="translate(-786.85,-427.7875)">
    <rect
       style="fill:none;stroke:#000000;stroke-width:1.5;stroke-opacity:1;filter:url(#filter3785)"
       id="rect5876"
       width="20"
       height="20"
       x="790.0014"
       y="430.93277"
       ry="0" />
  </g>
</svg>

And the code it creates:

int cairo_code_draw_MWEblur_get_width() { return 26; }
int cairo_code_draw_MWEblur_get_height() { return 26; }
void cairo_code_draw_MWEblur_render(cairo_t *cr) {
cairo_surface_t *temp_surface;
cairo_t *old_cr;
cairo_pattern_t *pattern;
cairo_matrix_t matrix;

cairo_set_operator(cr, CAIRO_OPERATOR_OVER);
int cairo_code_draw_MWEblur_get_width() { return 26; }
int cairo_code_draw_MWEblur_get_height() { return 26; }
void cairo_code_draw_MWEblur_render(cairo_t *cr) {
cairo_surface_t *temp_surface;
cairo_t *old_cr;
cairo_pattern_t *pattern;
cairo_matrix_t matrix;

}
cairo_pattern_set_extend(pattern, CAIRO_EXTEND_NONE);
cairo_pattern_set_filter(pattern, CAIRO_FILTER_GOOD);
cairo_set_source(cr, pattern);
cairo_pattern_destroy(pattern);
cairo_paint(cr);
/********************/
}

You see it throws an extra curly brace in there where it should be defining a pattern and path. It would be nice if it could just leave out the blur and draw the stroke or at least ignore strokes with blur.

THANKS!!!!

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