1 #include "svg/css-ostringstream.h"
2 #include "svg/strip-trailing-zeros.h"
3 #include <glib/gmessages.h>
4 #include <glib/gstrfuncs.h>
6 Inkscape::CSSOStringStream::CSSOStringStream()
7 {
8 /* These two are probably unnecessary now that we provide our own operator<< for float and
9 * double. */
10 ostr.imbue(std::locale::classic());
11 ostr.setf(std::ios::showpoint);
13 /* This one is (currently) needed though, as we currently use ostr.precision as a sort of
14 variable for storing the desired precision: see our two precision methods and our operator<<
15 methods for float and double. */
16 ostr.precision(8);
17 }
19 static void
20 write_num(Inkscape::CSSOStringStream &os, unsigned const prec, double const d)
21 {
22 char buf[32]; // haven't thought about how much is really required.
23 if (prec != 8) {
24 static bool warned;
25 if (!warned) {
26 g_warning("Using precision of 8 instead of the requested %u. Won't re-warn.", prec);
27 warned = true;
28 }
29 }
30 g_ascii_formatd(buf, sizeof(buf), "%.8f", d);
31 os << strip_trailing_zeros(buf);
32 }
34 Inkscape::CSSOStringStream &
35 operator<<(Inkscape::CSSOStringStream &os, float const d)
36 {
37 /* Try as integer first. */
38 {
39 long const n = long(d);
40 if (d == n) {
41 os << n;
42 return os;
43 }
44 }
46 write_num(os, os.precision(), d);
47 return os;
48 }
50 Inkscape::CSSOStringStream &
51 operator<<(Inkscape::CSSOStringStream &os, double const d)
52 {
53 /* Try as integer first. */
54 {
55 long const n = long(d);
56 if (d == n) {
57 os << n;
58 return os;
59 }
60 }
62 write_num(os, os.precision(), d);
63 return os;
64 }
67 /*
68 Local Variables:
69 mode:c++
70 c-file-style:"stroustrup"
71 c-file-offsets:((innamespace . 0)(inline-open . 0)(case-label . +))
72 indent-tabs-mode:nil
73 fill-column:99
74 End:
75 */
76 // vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:encoding=utf-8:textwidth=99 :