Skip to content
New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

fix: wrap multibyte char #126

Open
wants to merge 1 commit into
base: master
Choose a base branch
from
Open

fix: wrap multibyte char #126

Changes from all commits
Commits
Show all changes
1 commit
Select commit
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
29 changes: 4 additions & 25 deletions wrap.go
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -2,50 +2,29 @@ package gg

import (
"strings"
"unicode"
)

type measureStringer interface {
MeasureString(s string) (w, h float64)
}

func splitOnSpace(x string) []string {
var result []string
pi := 0
ps := false
for i, c := range x {
s := unicode.IsSpace(c)
if s != ps && i > 0 {
result = append(result, x[pi:i])
pi = i
}
ps = s
}
result = append(result, x[pi:])
return result
}

func wordWrap(m measureStringer, s string, width float64) []string {
var result []string
for _, line := range strings.Split(s, "\n") {
fields := splitOnSpace(line)
if len(fields)%2 == 1 {
fields = append(fields, "")
}
x := ""
for i := 0; i < len(fields); i += 2 {
w, _ := m.MeasureString(x + fields[i])
for _, c := range line {
w, _ := m.MeasureString(x + string(c))
if w > width {
if x == "" {
result = append(result, fields[i])
result = append(result, string(c))
x = ""
continue
} else {
result = append(result, x)
x = ""
}
}
x += fields[i] + fields[i+1]
x += string(c)
}
if x != "" {
result = append(result, x)
Expand Down