On Wed, Dec 7, 2016 at 5:49 PM, Lucio <lucio.d...@gmail.com> wrote: > The first issue is one of documentation. It says in > <https://godoc.org/golang.org/x/image/font> that: > > DrawBytes draws s at the dot and advances the dot's location. > > But it leaves the question of what exactly those bytes are supposed to > represent.
The bytes are presumed to be UTF-8 text. (What else would it be?) In any case, I sent out https://go-review.googlesource.com/34095 > but one wonders what the idea is of passing encoded runes as > bytes instead of using more direct runes for the purpose. A text editor widget might expose its text content as a []byte, instead of a []rune, since in the latter representation, the underlying array takes 4x the memory for ASCII text, a common case. > how does one convert a single rune (which I happen to need "measured" in the > code I'm working on) to a byte slice for the benefit of DrawBytes' (it's > actually MeasureBytes, in my case)? Do I seriously need to find a > utf8.RuneEncode function somewhere? Yes, it's in the standard library: https://golang.org/pkg/unicode/utf8/#EncodeRune Or, if you're less concerned about unnecessary memory allocations and only want a simple API, to draw a single rune r, use DrawString instead of DrawBytes: d.DrawString(string(r)) > The second issue is I'm sure even more due to a lack of understanding on my > part. Using the "UbuntuMono-RI.ttf" file I sourced somewhere, I get a > "panic: runtime error: index out of range" when executing (specifically for > debugging) ``font.MeasureString(instance, "\u2502")'' where "\u2501" and > lower seem to work OK. Can you mail me (off-list) that ttf file? -- You received this message because you are subscribed to the Google Groups "golang-nuts" group. To unsubscribe from this group and stop receiving emails from it, send an email to golang-nuts+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.
