Method TempInputScalar

tutorials/common/imgui/imgui_widgets.cpp:3326–3360

Note that Drag/Slider functions are only forwarding the min/max values clamping values if the ImGuiSliderFlags_AlwaysClamp flag is set! This is intended: this way we allow CTRL+Click manual input to set a value out of bounds, for maximum flexibility. However this may not be ideal for all uses, as some user code may break on out of bound values.

// This is intended: this way we allow CTRL+Click manual input to set a value out of bounds, for maximum flexibility.
// However this may not be ideal for all uses, as some user code may break on out of bound values.
bool ImGui::TempInputScalar(const ImRect& bb, ImGuiID id, const char* label, ImGuiDataType data_type, void* p_data, const char* format, const void* p_clamp_min, const void* p_clamp_max)
{
    char fmt_buf[32];
    char data_buf[32];
    format = ImParseFormatTrimDecorations(format, fmt_buf, IM_ARRAYSIZE(fmt_buf));
    DataTypeFormatString(data_buf, IM_ARRAYSIZE(data_buf), data_type, p_data, format);
    ImStrTrimBlanks(data_buf);

    ImGuiInputTextFlags flags = ImGuiInputTextFlags_AutoSelectAll | (ImGuiInputTextFlags)ImGuiInputTextFlags_NoMarkEdited;
    flags |= InputScalar_DefaultCharsFilter(data_type, format);

    bool value_changed = false;
    if (TempInputText(bb, id, label, data_buf, IM_ARRAYSIZE(data_buf), flags))
    {
        // Backup old value
        size_t data_type_size = DataTypeGetInfo(data_type)->Size;
        ImGuiDataTypeTempStorage data_backup;
        memcpy(&data_backup, p_data, data_type_size);

        // Apply new value (or operations) then clamp
        DataTypeApplyFromText(data_buf, data_type, p_data, format);
        if (p_clamp_min || p_clamp_max)
        {
            if (p_clamp_min && p_clamp_max && DataTypeCompare(data_type, p_clamp_min, p_clamp_max) > 0)
                ImSwap(p_clamp_min, p_clamp_max);
            DataTypeClamp(data_type, p_data, p_clamp_min, p_clamp_max);
        }

        // Only mark as edited if new value is different
        value_changed = memcmp(&data_backup, p_data, data_type_size) != 0;
        if (value_changed)
            MarkItemEdited(id);
    }
    return value_changed;
}

// Note: p_data, p_step, p_step_fast are _pointers_ to a memory address holding the data. For an Input widget, p_step and p_step_fast are optional.
// Read code of e.g. InputFloat(), InputInt() etc. or examples in 'Demo->Widgets->Data Types' to understand how to use this function directly.