Internals: Added support for overriding locale decimal point, undocumented. (#2278) + Misc doc update.

Doc: Mention IMGUI_VERSION_NUM in recent api breaking changes + textwrap some demo code.
This commit is contained in:
ocornut
2020-08-28 16:49:46 +02:00
parent 901d432cb7
commit 13f718337a
6 changed files with 49 additions and 16 deletions

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@ -3691,14 +3691,22 @@ static bool InputTextFilterCharacter(unsigned int* p_char, ImGuiInputTextFlags f
// Generic named filters
if (flags & (ImGuiInputTextFlags_CharsDecimal | ImGuiInputTextFlags_CharsHexadecimal | ImGuiInputTextFlags_CharsUppercase | ImGuiInputTextFlags_CharsNoBlank | ImGuiInputTextFlags_CharsScientific))
{
// The libc allows overriding locale, with e.g. 'setlocale(LC_NUMERIC, "de_DE.UTF-8");' which affect the output/input of printf/scanf.
// The standard mandate that programs starts in the "C" locale where the decimal point is '.'.
// We don't really intend to provide widespread support for it, but out of empathy for people stuck with using odd API, we support the bare minimum aka overriding the decimal point.
// Change the default decimal_point with:
// ImGui::GetCurrentContext()->PlatformLocaleDecimalPoint = *localeconv()->decimal_point;
ImGuiContext& g = *GImGui;
const unsigned c_decimal_point = (unsigned int)g.PlatformLocaleDecimalPoint;
// Allow 0-9 . - + * /
if (flags & ImGuiInputTextFlags_CharsDecimal)
if (!(c >= '0' && c <= '9') && (c != '.') && (c != '-') && (c != '+') && (c != '*') && (c != '/'))
if (!(c >= '0' && c <= '9') && (c != c_decimal_point) && (c != '-') && (c != '+') && (c != '*') && (c != '/'))
return false;
// Allow 0-9 . - + * / e E
if (flags & ImGuiInputTextFlags_CharsScientific)
if (!(c >= '0' && c <= '9') && (c != '.') && (c != '-') && (c != '+') && (c != '*') && (c != '/') && (c != 'e') && (c != 'E'))
if (!(c >= '0' && c <= '9') && (c != c_decimal_point) && (c != '-') && (c != '+') && (c != '*') && (c != '/') && (c != 'e') && (c != 'E'))
return false;
// Allow 0-9 a-F A-F