/** Evaluates the special dvisvgm:bbox.
* variant 1: dvisvgm:bbox [r[el]] <width> <height> [<depth>] [transform]
* variant 2: dvisvgm:bbox a[bs] <x1> <y1> <x2> <y2> [transform]
* variant 3: dvisvgm:bbox f[ix] <x1> <y1> <x2> <y2> [transform]
* variant 4: dvisvgm:bbox n[ew] <name>
* variant 5: dvisvgm:bbox lock | unlock */
void DvisvgmSpecialHandler::processBBox (InputReader &ir, SpecialActions &actions) {
ir.skipSpace();
if (ir.check("lock"))
actions.bbox().lock();
else if (ir.check("unlock"))
actions.bbox().unlock();
else {
int c = ir.peek();
try {
if (!isalpha(c))
c = 'r'; // no mode specifier => relative box parameters
else {
while (!isspace(ir.peek())) // skip trailing characters
ir.get();
if (c == 'n') { // "new": create new local bounding box
ir.skipSpace();
string name;
while (isalnum(ir.peek()))
name += char(ir.get());
ir.skipSpace();
if (!name.empty() && ir.eof())
actions.bbox(name, true); // create new user box
}
else if (c == 'a' || c == 'f') { // "abs" or "fix"
Length lengths[4];
for (Length &len : lengths)
len = read_length(ir);
BoundingBox b(lengths[0], lengths[1], lengths[2], lengths[3]);
ir.skipSpace();
if (ir.check("transform"))
b.transform(actions.getMatrix());
if (c == 'a')
actions.embed(b);
else {
actions.bbox() = b;
actions.bbox().lock();
}
}
}
if (c == 'r') {
Length w = read_length(ir);
Length h = read_length(ir);
Length d = read_length(ir);
ir.skipSpace();
update_bbox(w, h, d, ir.check("transform"), actions);
}
}
catch (const UnitException &e) {
throw SpecialException(string("dvisvgm:bbox: ") + e.what());
}
}
}
static string read_entry (InputReader &in) {
string entry;
bool accept_slashes=true;
while (!in.eof() && ((in.peek() == '/' && accept_slashes) || valid_name_char(in.peek()))) {
if (in.peek() != '/')
accept_slashes = false;
entry += char(in.get());
}
if (entry.length() > 1) {
// strip leading slashes
// According to the PostScript specification, a single slash without further
// following characters is a valid name.
size_t n=0;
while (n < entry.length() && entry[n] == '/')
n++;
entry = entry.substr(n);
}
return entry;
}
/** Evaluates the special dvisvgm:bbox.
* variant 1: dvisvgm:bbox [r[el]] <width> <height> [<depth>]
* variant 2: dvisvgm:bbox a[bs] <x1> <y1> <x2> <y2>
* variant 3: dvisvgm:bbox f[ix] <x1> <y1> <x2> <y2>
* variant 4: dvisvgm:bbox n[ew] <name> */
void DvisvgmSpecialHandler::processBBox (InputReader &ir, SpecialActions *actions) {
const double pt2bp = 72/72.27;
ir.skipSpace();
int c = ir.peek();
if (isalpha(c)) {
while (!isspace(ir.peek())) // skip trailing characters
ir.get();
if (c == 'n') {
ir.skipSpace();
string name;
while (isalnum(ir.peek()))
name += char(ir.get());
ir.skipSpace();
if (!name.empty() && ir.eof())
actions->bbox(name, true); // create new user box
}
else if (c == 'a' || c == 'f') {
double p[4];
for (int i=0; i < 4; i++)
p[i] = ir.getDouble()*pt2bp;
BoundingBox b(p[0], p[1], p[2], p[3]);
if (c == 'a')
actions->embed(b);
else {
actions->bbox() = b;
actions->bbox().lock();
}
}
}
else
c = 'r'; // no mode specifier => relative box parameters
if (c == 'r') {
double w = ir.getDouble()*pt2bp;
double h = ir.getDouble()*pt2bp;
double d = ir.getDouble()*pt2bp;
update_bbox(w, h, d, actions);
}
}
void CommandLine::handle_zip (InputReader &ir, const Option &opt, bool longopt) {
if (ir.eof() || getIntArg(ir, opt, longopt, _zip_arg))
_zip_given = true;
}
void CommandLine::handle_version (InputReader &ir, const Option &opt, bool longopt) {
if (ir.eof() || getBoolArg(ir, opt, longopt, _version_arg))
_version_given = true;
}
void CommandLine::handle_trace_all (InputReader &ir, const Option &opt, bool longopt) {
if (ir.eof() || getBoolArg(ir, opt, longopt, _trace_all_arg))
_trace_all_given = true;
}
void CommandLine::handle_progress (InputReader &ir, const Option &opt, bool longopt) {
if (ir.eof() || getDoubleArg(ir, opt, longopt, _progress_arg))
_progress_given = true;
}
void CommandLine::handle_no_specials (InputReader &ir, const Option &opt, bool longopt) {
if (ir.eof() || getStringArg(ir, opt, longopt, _no_specials_arg))
_no_specials_given = true;
}
void CommandLine::handle_cache (InputReader &ir, const Option &opt, bool longopt) {
if (ir.eof() || getStringArg(ir, opt, longopt, _cache_arg))
_cache_given = true;
}
