[page1] Enable string_width in RTFText object

[nanxstats]

We will need to calculate the string width based on information in the RTFText object.

Current code

text = RTFText("abc")
text.__dict__

Example in R for a text string with all attributes.

teststr 
[1] "title"
attr(,"text_font")
[1] 1
attr(,"text_font_size")
[1] 12
attr(,"text_justification")
[1] "c"
attr(,"text_space")
[1] 1
attr(,"text_space_before")
[1] 180
attr(,"text_space_after")
[1] 180
attr(,"text_indent_first")
[1] 0
attr(,"text_indent_left")
[1] 0
attr(,"text_indent_right")
[1] 0
attr(,"text_new_page")
[1] FALSE
attr(,"text_hyphenation")
[1] TRUE
attr(,"text_convert")
[1] TRUE
attr(,"strwidth")
[1] 0.2604167
attr(,"use_color")
[1] FALSE
attr(,"class")
[1] "character" "rtf_text"