1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
|
package ui
import (
"bytes"
"fmt"
"strings"
tea "github.com/charmbracelet/bubbletea"
"github.com/charmbracelet/lipgloss"
charmansi "github.com/charmbracelet/x/ansi"
"github.com/mattn/go-runewidth"
"github.com/muesli/ansi"
"github.com/muesli/reflow/truncate"
"github.com/kyren223/eko/pkg/assert"
)
type ModelTransition struct {
Model tea.Model
}
func AddBorderHeader(header string, headerOffset int, style lipgloss.Style, render string) string {
b := style.GetBorderStyle()
body := style.UnsetBorderTop().Render(render)
bodyWidth, headerWidth := lipgloss.Width(body), lipgloss.Width(header)
leftCornerWidth, rightCornerWidth := lipgloss.Width(b.TopLeft), lipgloss.Width(b.TopRight)
topWidth := bodyWidth - leftCornerWidth - rightCornerWidth
leftWidth := headerOffset
rightWidth := topWidth - leftWidth - headerWidth
assert.Assert(leftWidth >= 0, "left width cannot be negative", "leftWidth", leftWidth)
assert.Assert(rightWidth >= 0, "right width cannot be negative", "rightWidth", rightWidth)
topStyle := lipgloss.NewStyle().
Background(style.GetBorderTopBackground()).
Foreground(style.GetBorderTopForeground())
left := b.TopLeft + strings.Repeat(b.Top, leftWidth)
right := topStyle.Render(strings.Repeat(b.Top, rightWidth) + b.TopRight)
borderTop := lipgloss.NewStyle().
Inline(true).
MaxWidth(bodyWidth).
Background(style.GetBorderTopBackground()).
Foreground(style.GetBorderTopForeground()).
Render(fmt.Sprintf("%s%s%s", left, header, right))
return lipgloss.JoinVertical(lipgloss.Left, borderTop, body)
}
// PlaceOverlay places fg on top of bg.
func PlaceOverlay(x, y int, fg, bg string, opts ...WhitespaceOption) string {
fgLines, fgWidth := getLines(fg)
bgLines, bgWidth := getLines(bg)
bgHeight := len(bgLines)
fgHeight := len(fgLines)
if fgWidth >= bgWidth && fgHeight >= bgHeight {
// FIXME: return fg or bg?
return fg
}
// TODO: allow placement outside of the bg box?
x = clamp(x, 0, bgWidth-fgWidth)
y = clamp(y, 0, bgHeight-fgHeight)
ws := &whitespace{}
for _, opt := range opts {
opt(ws)
}
var b strings.Builder
for i, bgLine := range bgLines {
if i > 0 {
b.WriteByte('\n')
}
if i < y || i >= y+fgHeight {
b.WriteString(bgLine)
continue
}
pos := 0
if x > 0 {
left := truncate.String(bgLine, uint(x))
pos = ansi.PrintableRuneWidth(left)
b.WriteString(left)
if pos < x {
b.WriteString(ws.render(x - pos))
pos = x
}
}
fgLine := fgLines[i-y]
b.WriteString(fgLine)
pos += ansi.PrintableRuneWidth(fgLine)
right := cutLeft(bgLine, pos)
bgWidth := ansi.PrintableRuneWidth(bgLine)
rightWidth := ansi.PrintableRuneWidth(right)
if rightWidth <= bgWidth-pos {
b.WriteString(ws.render(bgWidth - rightWidth - pos))
}
b.WriteString(right)
}
return b.String()
}
// cutLeft cuts printable characters from the left.
// This function is heavily based on muesli's ansi and truncate packages.
func cutLeft(s string, cutWidth int) string {
var (
pos int
isAnsi bool
ab bytes.Buffer
b bytes.Buffer
)
for _, c := range s {
var w int
if c == ansi.Marker || isAnsi {
isAnsi = true
ab.WriteRune(c)
if ansi.IsTerminator(c) {
isAnsi = false
if bytes.HasSuffix(ab.Bytes(), []byte("[0m")) {
ab.Reset()
}
}
} else {
w = runewidth.RuneWidth(c)
}
if pos >= cutWidth {
if b.Len() == 0 {
if ab.Len() > 0 {
b.Write(ab.Bytes())
}
if pos-cutWidth > 1 {
b.WriteByte(' ')
continue
}
}
b.WriteRune(c)
}
pos += w
}
return b.String()
}
func getLines(s string) (lines []string, widest int) {
lines = strings.Split(s, "\n")
for _, l := range lines {
w := charmansi.StringWidth(l)
if widest < w {
widest = w
}
}
return lines, widest
}
func clamp(v, lower, upper int) int {
return min(max(v, lower), upper)
}
|
