diff options
Diffstat (limited to 'src')
| -rw-r--r-- | src/Fl_Input.cxx | 34 |
1 files changed, 33 insertions, 1 deletions
diff --git a/src/Fl_Input.cxx b/src/Fl_Input.cxx index 189ec8ba0..686a7cbf3 100644 --- a/src/Fl_Input.cxx +++ b/src/Fl_Input.cxx @@ -32,6 +32,8 @@ // the keybindings. #include <stdio.h> +#include <stdlib.h> +#include <locale.h> #include <FL/Fl.H> #include <FL/Fl_Input.H> #include <FL/fl_draw.H> @@ -62,6 +64,14 @@ int Fl_Input::shift_up_down_position(int p) { #define ctrl(x) ((x)^0x40) +// List of characters that are leagal in a floating point input field. +// This text string is created at run-time to take the current locale +// into account (for example, continental Europe uses a comma instead +// of a decimal point). For back compatibility reasons, we always +// allow the decimal point. +static char *standard_fp_chars = ".eE+-"; +static char *legal_fp_chars = 0L; + int Fl_Input::handle_key() { char ascii = Fl::event_text()[0]; @@ -75,13 +85,35 @@ int Fl_Input::handle_key() { if (input_type() == FL_FLOAT_INPUT || input_type() == FL_INT_INPUT) { Fl::compose_reset(); // ignore any foreign letters... + // initialize the list of legal characters inside a floating point number + if (!legal_fp_chars) { + int len = strlen(standard_fp_chars); + struct lconv *lc = localeconv(); + if (lc) { + if (lc->decimal_point) len += strlen(lc->decimal_point); + if (lc->mon_decimal_point) len += strlen(lc->mon_decimal_point); + if (lc->positive_sign) len += strlen(lc->positive_sign); + if (lc->negative_sign) len += strlen(lc->negative_sign); + } + // the following line is not a true memory leak because the array is only + // allocated once if required, and automatically freed when the program quits + legal_fp_chars = (char*)malloc(len+1); + strcpy(legal_fp_chars, standard_fp_chars); + if (lc) { + if (lc->decimal_point) strcat(legal_fp_chars, lc->decimal_point); + if (lc->mon_decimal_point) strcat(legal_fp_chars, lc->mon_decimal_point); + if (lc->positive_sign) strcat(legal_fp_chars, lc->positive_sign); + if (lc->negative_sign) strcat(legal_fp_chars, lc->negative_sign); + } + } + // This is complex to allow "0xff12" hex to be typed: if (!position() && (ascii == '+' || ascii == '-') || (ascii >= '0' && ascii <= '9') || (position()==1 && index(0)=='0' && (ascii=='x' || ascii == 'X')) || (position()>1 && index(0)=='0' && (index(1)=='x'||index(1)=='X') && (ascii>='A'&& ascii<='F' || ascii>='a'&& ascii<='f')) || - input_type()==FL_FLOAT_INPUT && ascii && strchr(".eE+-", ascii)) { + input_type()==FL_FLOAT_INPUT && ascii && strchr(legal_fp_chars, ascii)) { if (readonly()) fl_beep(); else replace(position(), mark(), &ascii, 1); } |