ref: e83fc0ac32af17baeae1a29e23de8c0decea7154
dir: /field/field.go/
package field
import (
"9fans.net/go/draw"
"9fans.net/go/draw/memdraw"
//"fmt"
"image"
"log"
"sync"
"xui"
"xui/events"
"xui/events/keyboard"
"xui/events/mouse"
"xui/internal/color"
"xui/internal/font"
"xui/internal/geom"
"xui/layout"
"xui/space"
)
const (
Backspace rune = 8
)
type Interface interface {
}
type Field struct {
mu sync.RWMutex
Orig image.Point
image.Rectangle
x xui.Interface
Text string
color.Colorset
textImg *memdraw.Image
borderImg *memdraw.Image
hoverImg *memdraw.Image
hover bool
cb func(ev events.Interface, userData any)
cbUserData any
Margin space.Sp
}
func New(x xui.Interface, orig image.Point, text string, r image.Rectangle) (f *Field) {
f = &Field{}
f.Orig = orig
f.Text = text
f.Rectangle = r
f.x = x
f.Colorset.Normal.Border = color.Border
f.Colorset.Hover.Border = color.Hover.Border
return
}
func (f *Field) Event(ev events.Interface) {
f.mu.Lock()
defer f.mu.Unlock()
switch tev := ev.(type) {
case mouse.Event:
if tev.Type == mouse.Enter {
f.hover = true
} else if tev.Type == mouse.Leave {
f.hover = false
}
if f.cb != nil {
f.cb(tev, f.cbUserData)
}
case keyboard.Event:
log.Printf("key pressed: %+v", tev)
switch tev.Key {
case Backspace:
if len(f.Text) > 0 {
f.Text = f.Text[:len(f.Text)-1]
}
default:
f.Text += string([]byte{byte(tev.Key)})
}
//log.Printf("event: call updateTextImgs")
f.updateTextImgs()
}
}
func (f *Field) Render() *memdraw.Image {
f.mu.RLock()
defer f.mu.RUnlock()
if f.borderImg == nil {
//log.Printf("render: call updateTextImgs")
f.updateTextImgs()
}
if f.hover {
return f.hoverImg
} else {
return f.borderImg
}
}
func (f *Field) updateTextImgs() {
var err error
//log.Printf("updateTextImgs: call font.String")
f.textImg, err = font.String(f.Text)
if err != nil {
panic(err.Error())
}
r := f.Rectangle//f.textImg.R.Intersect(f.Rectangle)
f.borderImg, err = memdraw.AllocImage(f.Rectangle.Inset(-f.x.Scale(5)).Add(f.x.Pt(5, 5)), draw.ABGR32)
if err != nil {
panic(err.Error())
}
memdraw.FillColor(f.borderImg, draw.Opaque)
f.hoverImg, err = memdraw.AllocImage(f.Rectangle.Inset(-f.x.Scale(5)).Add(f.x.Pt(5, 5)), draw.ABGR32)
if err != nil {
panic(err.Error())
}
memdraw.FillColor(f.hoverImg, draw.Opaque)
rr := r
rr.Min = r.Min.Add(f.x.Pt(3, 7))
f.borderImg.Draw(rr, f.textImg, image.ZP, color.EmptyMask, image.ZP, draw.SoverD)
geom.DrawRoundedBorder(f.borderImg, f.Rectangle, f.Colorset.Normal.Border)
f.hoverImg.Draw(rr, f.textImg, image.ZP, color.EmptyMask, image.ZP, draw.SoverD)
geom.DrawRoundedBorder(f.hoverImg, f.Rectangle, f.Colorset.Hover.Border)
geom.DrawCursor(f.hoverImg, r, f.textImg, f.Colorset.Hover.Border)
}
func (f Field) Focus() {
}
func (f Field) Layout() layout.Interface {
return layout.Inline{}
}
func (f *Field) Geom() (r image.Rectangle, margin space.Sp) {
f.mu.RLock()
defer f.mu.RUnlock()
if f.borderImg == nil {
//log.Printf("geom: call updateTextImgs")
f.updateTextImgs()
}
return f.borderImg.R, f.Margin
}
func (f *Field) SetCallback(cb func(ev events.Interface, userData any), userData any) {
f.cb = cb
f.cbUserData = userData
}