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|
package ui
import (
"fmt"
"strings"
"time"
)
var homeMessages = []string{
"\x1dYou open an IRC client.",
"Welcome to the Internet Relay Network!",
"Mentions & cie go here.",
"May the IRC be with you.",
"Hey! I'm senpai, you every IRC student!",
"Student? No, I'm an IRC \x02client\x02!",
}
func IsSplitRune(c rune) bool {
return c == ' ' || c == '\t'
}
type Point struct {
X int
I int
Split bool
}
type Line struct {
Time time.Time
IsStatus bool
Content string
SplitPoints []Point
renderedHeight int
}
func NewLine(t time.Time, isStatus bool, content string) (line Line) {
line.Time = t
line.IsStatus = isStatus
line.Content = content
line.Invalidate()
line.computeSplitPoints()
return
}
func NewLineNow(content string) (line Line) {
line = NewLine(time.Now(), false, content)
return
}
func (line *Line) Invalidate() {
line.renderedHeight = -1
}
func (line *Line) RenderedHeight(screenWidth int) (height int) {
if line.renderedHeight < 0 {
line.computeRenderedHeight(screenWidth)
}
height = line.renderedHeight
return
}
// TODO clean and understand the fucking function
func (line *Line) computeRenderedHeight(screenWidth int) {
var lastSP Point
line.renderedHeight = 1
x := 0
//fmt.Printf("\n%d %q\n", screenWidth, line.Content)
for _, sp := range line.SplitPoints {
l := sp.X - lastSP.X
if !sp.Split && x == 0 {
// Don't add space at the beginning of a row
} else if screenWidth < l {
line.renderedHeight += (x + l) / screenWidth
x = (x + l) % screenWidth
} else if screenWidth == l {
if x == 0 {
line.renderedHeight++
} else {
line.renderedHeight += 2
x = 0
}
} else if screenWidth < x+l {
line.renderedHeight++
if sp.Split {
x = l % screenWidth
} else {
x = 0
}
} else if screenWidth == x+l {
line.renderedHeight++
x = 0
} else {
x = x + l
}
//fmt.Printf("%d %d %t occupied by %q\n", line.renderedHeight, x, sp.Split, line.Content[:sp.I])
lastSP = sp
}
if x == 0 && 1 < line.renderedHeight {
line.renderedHeight--
}
}
func (line *Line) computeSplitPoints() {
var wb widthBuffer
lastWasSplit := false
for i, r := range line.Content {
curIsSplit := IsSplitRune(r)
if lastWasSplit != curIsSplit {
line.SplitPoints = append(line.SplitPoints, Point{
X: wb.Width(),
I: i,
Split: curIsSplit,
})
}
lastWasSplit = curIsSplit
wb.WriteRune(r)
}
if !lastWasSplit {
line.SplitPoints = append(line.SplitPoints, Point{
X: wb.Width(),
I: len(line.Content),
Split: true,
})
}
}
type Buffer struct {
Title string
Highlights int
Content []Line
}
type BufferList struct {
List []Buffer
Current int
}
func (bs *BufferList) Add(title string) (pos int, ok bool) {
for i, b := range bs.List {
if b.Title == title {
pos = i
return
}
}
pos = len(bs.List)
ok = true
bs.List = append(bs.List, Buffer{Title: title})
return
}
func (bs *BufferList) Remove(title string) (ok bool) {
for i, b := range bs.List {
if b.Title == title {
ok = true
bs.List = append(bs.List[:i], bs.List[i+1:]...)
if i == bs.Current {
bs.Current = 0
}
return
}
}
return
}
func (bs *BufferList) Previous() (ok bool) {
if bs.Current <= 0 {
ok = false
} else {
bs.Current--
ok = true
}
return
}
func (bs *BufferList) Next() (ok bool) {
if bs.Current+1 < len(bs.List) {
bs.Current++
ok = true
} else {
ok = false
}
return
}
func (bs *BufferList) Idx(title string) (idx int) {
if title == "" {
idx = 0
return
}
for pos, b := range bs.List {
if b.Title == title {
idx = pos
return
}
}
idx = -1
return
}
func (bs *BufferList) AddLine(idx int, line string, t time.Time, isStatus bool) {
b := &bs.List[idx]
n := len(bs.List[idx].Content)
line = strings.TrimRight(line, "\t ")
if isStatus && n != 0 && b.Content[n-1].IsStatus {
l := &b.Content[n-1]
l.Content += " " + line
lineWidth := StringWidth(line)
lastSP := l.SplitPoints[len(l.SplitPoints)-1]
sp := Point{
X: lastSP.X + 1 + lineWidth,
I: len(l.SplitPoints),
}
l.SplitPoints = append(l.SplitPoints, sp)
l.Invalidate()
} else {
if n == 0 || b.Content[n-1].Time.Truncate(time.Minute) != t.Truncate(time.Minute) {
hour := t.Hour()
minute := t.Minute()
line = fmt.Sprintf("\x02%02d:%02d\x00 %s", hour, minute, line)
}
l := NewLine(t, isStatus, line)
b.Content = append(b.Content, l)
}
}
func (bs *BufferList) Invalidate() {
for i := range bs.List {
for j := range bs.List[i].Content {
bs.List[i].Content[j].Invalidate()
}
}
}
|
