int barcode_to_png (char *image_name) {
MagickWand *magick_wand;
MagickBooleanType status;
int width, height, pad, half_pad;
/* read a barcode image */
MagickWandGenesis();
magick_wand = NewMagickWand();
MagickSetResolution(magick_wand, 300, 300);
status = MagickReadImage(magick_wand, image_name);
if (status == MagickFalse) ThrowWandException(magick_wand, 1);
/* trim the image, resample it, and pad it by [10% of the long side] per side */
MagickTrimImage(magick_wand, 10);
width = MagickGetImageWidth(magick_wand);
height = MagickGetImageHeight(magick_wand);
pad = determine_padding(width, height);
half_pad = round(pad/2);
MagickExtentImage(magick_wand, width+pad, height+pad, -half_pad, -half_pad);
/* write image (a PNG version and a formatted PS version) */
status=MagickWriteImage(magick_wand, chop_path(image_name, ".png"));
if (status == MagickFalse) ThrowWandException(magick_wand, 2);
status=MagickWriteImage(magick_wand, chop_path(image_name, ".ps"));
if (status == MagickFalse) ThrowWandException(magick_wand, 2);
/* clean up */
magick_wand=DestroyMagickWand(magick_wand);
MagickWandTerminus();
return 0;
}
apr_status_t
dims_extent_operation (dims_request_rec *d, char *args, char **err) {
MagickStatusType flags;
RectangleInfo rec;
flags = ParseAbsoluteGeometry(args, &rec);
if(!(flags & AllValues)) {
*err = "Parsing extent geometry failed";
return DIMS_FAILURE;
}
PixelWand *p_wand = NewPixelWand();
long w,h;
int x, y;
PixelSetColor(p_wand, "white");
w = MagickGetImageWidth(d->wand);
h = MagickGetImageHeight(d->wand);
MagickSetImageBackgroundColor(d->wand,p_wand);
x = (w - rec.width) / 2;
y = (h - rec.height) / 2;
MAGICK_CHECK(MagickExtentImage(d->wand,rec.width, rec.height, x, y), d);
return DIMS_SUCCESS;
}
