ZacharyZhang-NY
51af14709d
A terminal with history, a Go-colored code block, a log viewer that follows, a hex viewer, a memory map, a JSON tree, a line diff, a GAME OVER crash screen, an FPS meter, profiler bars, breakpoints, variables, command history, a shortcut list, a debug grid, a pixel editor that exports string art, a palette editor, a sprite sheet, a glyph map and a 6502 register view. layout.ScrollArea takes Follow, and ChatLog now uses it. data.TreeNode takes a Value drawn in its Slot. pixel gains Has, and Sprite.Art writes MustSprite art. pixel.Editor takes the caller's value at each input event, so a value changed between frames is never typed onto.
105 lines
2.9 KiB
Go
105 lines
2.9 KiB
Go
package code
|
|
|
|
import (
|
|
"log/slog"
|
|
"unicode/utf8"
|
|
|
|
"github.com/egoist/mygo/ui"
|
|
|
|
"git.zacharyzhang.com/ZacharyZhang-NY/8bitMyGoUI/layout"
|
|
"git.zacharyzhang.com/ZacharyZhang-NY/8bitMyGoUI/pixel"
|
|
)
|
|
|
|
type TerminalOptions struct {
|
|
// Prompt starts the input line; zero means "$".
|
|
Prompt string
|
|
// Width and Height are dots; zeros mean 240 by 120.
|
|
Width, Height int
|
|
Disabled bool
|
|
}
|
|
|
|
type TerminalResult struct {
|
|
Element *ui.Element
|
|
// Ran is the command Enter sent, else "".
|
|
Ran string
|
|
Changed bool
|
|
}
|
|
|
|
type termKey struct{}
|
|
|
|
// term is the scroll, history, how far back, the draft.
|
|
type term struct {
|
|
scroll ui.ScrollState
|
|
history []string
|
|
back int
|
|
draft string
|
|
}
|
|
|
|
// Terminal prints lines over a prompt; Enter runs, arrows recall.
|
|
func Terminal(c *ui.Context, text string, lines []string, input *string, o TerminalOptions) TerminalResult {
|
|
k := pixel.K(c)
|
|
w, h := pixel.Or("Terminal Width", o.Width, 240), pixel.Or("Terminal Height", o.Height, 120)
|
|
prompt := o.Prompt
|
|
if prompt == "" {
|
|
prompt = "$"
|
|
}
|
|
var res TerminalResult
|
|
res.Element = layout.Panel(c, layout.PanelOptions{Style: pixel.Sunken, Fill: pixel.Well, Padding: 2}, func() {
|
|
box := ui.Column(c).Size(k.D(w), k.D(h)).Gap(k.D(2))
|
|
tm := ui.Local(box, termKey{}, func() term { return term{} })
|
|
box.Children(func() {
|
|
layout.ScrollArea(c, &tm.scroll, layout.ScrollAreaOptions{Label: text, Follow: true, Disabled: o.Disabled}, func() {
|
|
ui.Column(c).FillWidth().Children(func() {
|
|
for _, l := range lines {
|
|
pixel.Text(c, l, pixel.TextOptions{Wrap: true})
|
|
}
|
|
})
|
|
}).Element.Grow(1).FillWidth()
|
|
row, off := ui.Row(c).FillWidth().Gap(k.D(4)), false
|
|
row.Children(func() {
|
|
pixel.Text(c, prompt, pixel.TextOptions{Slot: pixel.Good})
|
|
ed := pixel.Editor(c, input, pixel.EditorOptions{Label: k.Msg("command"), Disabled: o.Disabled})
|
|
ed.Element.Grow(1)
|
|
res.Changed, off = ed.Changed, ed.Input.IsDisabled()
|
|
if ed.Submitted && !off {
|
|
// The editor drew the old line; draw the empty one.
|
|
c.Invalidate()
|
|
res.Ran, *input, tm.back = *input, "", 0
|
|
if n := len(tm.history); res.Ran != "" && (n == 0 || tm.history[n-1] != res.Ran) {
|
|
tm.history = append(tm.history, res.Ran)
|
|
}
|
|
}
|
|
})
|
|
// Up and Down are history here, taken from the editor.
|
|
if up, down := row.Shortcut(0, ui.KeyUp), row.Shortcut(0, ui.KeyDown); (up || down) && !off {
|
|
res.Changed = recall(tm, input, up) || res.Changed
|
|
}
|
|
})
|
|
})
|
|
if res.Ran != "" || res.Changed {
|
|
slog.Debug("8bit: terminal", "label", text, "ran", res.Ran != "", "runes", utf8.RuneCountInString(*input))
|
|
}
|
|
return res
|
|
}
|
|
|
|
// recall steps through history; past the newest is the draft.
|
|
func recall(tm *term, input *string, up bool) bool {
|
|
n := len(tm.history)
|
|
switch {
|
|
case up && tm.back < n:
|
|
if tm.back == 0 {
|
|
tm.draft = *input
|
|
}
|
|
tm.back++
|
|
case !up && tm.back > 0:
|
|
tm.back--
|
|
default:
|
|
return false
|
|
}
|
|
*input = tm.draft
|
|
if tm.back > 0 {
|
|
*input = tm.history[n-tm.back]
|
|
}
|
|
return true
|
|
}
|