Function nsvg__parseUse

rEFIt_UEFI/libeg/nanosvg.cpp:2633–2745

}

static void nsvg__parseUse(NSVGparser* p, const char** dict)
{
  NSVGattrib* attr = nsvg__getAttr(p);
  NSVGshape* shape = NULL;
  NSVGshape* ref = NULL;
  NSVGsymbol* refSym = NULL;
  int i;

  float x = 0.0f;
  float y = 0.0f;
  float xform[6];

  for (i = 0; dict[i]; i += 2) {
    if (strcmp(dict[i], "x") == 0) {
      x = nsvg__parseCoordinate(p, dict[i+1], nsvg__actualOrigX(p), nsvg__actualWidth(p));
    } else if (strcmp(dict[i], "y") == 0) {
      y = nsvg__parseCoordinate(p, dict[i+1], nsvg__actualOrigY(p), nsvg__actualHeight(p));
    } else if (strcmp(dict[i], "xlink:href") == 0) {
      const char *href = dict[i+1];
      refSym = p->symbols;
      while (refSym) {
        if (strcmp(refSym->id, href+1) == 0)
          break;
        refSym = refSym->next;
      }
      if (!refSym) {
        ref = p->image->shapes;
        while (ref) {
          if (strcmp(ref->id, href+1) == 0)
            break;
          ref = ref->next;
        }
      }
      if (!ref && !refSym) {
        return; // use without ref
      }
    } else {
      nsvg__parseAttr(p, dict[i], dict[i + 1]);
    }
  }

  if (refSym) {
    x -= refSym->viewBox[0];
    y -= refSym->viewBox[1];
  } else if (ref) {
    x -= ref->bounds[0];
    y -= ref->bounds[1];
  }

  nsvg__xformSetTranslation(&xform[0], x, y);
  nsvg__xformMultiply(&xform[0], attr->xform); //translate before rotate
//  DumpFloat2("use xform", xform, 6);

  if (ref) {
    shape = (NSVGshape*)AllocateCopyPool(sizeof(NSVGshape), ref);
    if (!shape) return;
    memcpy(shape->xform, &xform[0], sizeof(float)*6);
    shape->isSymbol = FALSE;