mirror of
https://github.com/gdamore/tcell.git
synced 2025-04-27 13:48:50 +08:00
added wasm support
This commit is contained in:
Ahoys123
Garrett D'Amore
parent
87f880c2d6
commit
49cc9d21db
1708
tscreen.go
1708
tscreen.go
File diff suppressed because it is too large
Load Diff
1653
tscreen_term.go
Normal file
1653
tscreen_term.go
Normal file
File diff suppressed because it is too large
Load Diff
437
tscreen_web.go
Normal file
437
tscreen_web.go
Normal file
@ -0,0 +1,437 @@
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//go:build js && wasm
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// +build js,wasm
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package tcell
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import (
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"errors"
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"strings"
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"sync"
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"syscall/js"
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"unicode/utf8"
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)
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func NewTerminfoScreen() (Screen, error) {
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return &tScreen{}, nil
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}
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type tScreen struct {
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w, h int
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style Style
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cells CellBuffer
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running bool
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fini bool // dummy var; html doesn't need to get restored or "shut down"
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clear bool
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flagsPresent bool
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pasteEnabled bool
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mouseFlags MouseFlags
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cursorStyle CursorStyle
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cx, cy int // dummies so web tScreen can use generic tScreen.Sync
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quit chan struct{}
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evch chan Event
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fallback map[rune]string
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sync.Mutex
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}
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func (t *tScreen) Init() error {
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t.w, t.h = 80, 24
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t.fallback = make(map[rune]string)
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t.evch = make(chan Event, 10)
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t.quit = make(chan struct{})
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t.Lock()
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t.running = true
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t.cx, t.cy = -1, -1
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t.style = StyleDefault
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t.cells.Resize(t.w, t.h)
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t.Unlock()
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js.Global().Set("onKeyEvent", js.FuncOf(t.onKeyEvent))
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return nil
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}
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func (t *tScreen) Fini() {
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close(t.quit)
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}
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func (t *tScreen) onKeyEvent(this js.Value, args []js.Value) interface{} {
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key := args[0].String()
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// don't accept any modifier keys as their own
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if key == "Control" || key == "Alt" || key == "Meta" || key == "Shift" {
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return nil
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}
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mod := ModNone
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if args[1].Bool() { // mod shift
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mod |= ModShift
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}
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if args[2].Bool() { // mod alt
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mod |= ModAlt
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}
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if args[3].Bool() { // mod ctrl
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mod |= ModCtrl
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}
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if args[4].Bool() { // mod meta
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mod |= ModMeta
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}
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// check for special case of Ctrl + key
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if mod == ModCtrl {
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if k, ok := WebKeyNames["Ctrl-"+strings.ToLower(key)]; ok {
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t.PostEventWait(NewEventKey(k, 0, mod))
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return nil
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}
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}
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// next try function keys
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if k, ok := WebKeyNames[key]; ok {
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t.PostEventWait(NewEventKey(k, 0, mod))
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return nil
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}
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// finally try normal, printable chars
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r, _ := utf8.DecodeRuneInString(key)
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t.PostEventWait(NewEventKey(KeyRune, r, mod))
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return nil
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}
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func (t *tScreen) onPaste(this js.Value, args []js.Value) interface{} {
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t.PostEventWait(NewEventPaste(args[0].Bool()))
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return nil
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}
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func (t *tScreen) enableMouse(f MouseFlags) {
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if f&MouseButtonEvents != 0 {
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js.Global().Set("onMouseClick", js.FuncOf(t.onMouseEvent))
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} else {
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js.Global().Set("onMouseClick", js.FuncOf(t.unset))
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}
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if f&MouseDragEvents != 0 || f&MouseMotionEvents != 0 {
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js.Global().Set("onMouseMove", js.FuncOf(t.onMouseEvent))
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} else {
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js.Global().Set("onMouseMove", js.FuncOf(t.unset))
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}
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}
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func (t *tScreen) onMouseEvent(this js.Value, args []js.Value) interface{} {
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mod := ModNone
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button := ButtonNone
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switch args[2].Int() {
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case 0:
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if t.mouseFlags&MouseMotionEvents == 0 {
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// don't want this event! is a mouse motion event, but user has asked not.
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return nil
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}
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button = ButtonNone
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case 1:
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button = Button1
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case 2:
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button = Button3 // Note we prefer to treat right as button 2
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case 3:
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button = Button2 // And the middle button as button 3
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}
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if args[3].Bool() { // mod shift
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mod |= ModShift
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}
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if args[4].Bool() { // mod alt
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mod |= ModAlt
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}
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if args[5].Bool() { // mod ctrl
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mod |= ModCtrl
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}
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t.PostEventWait(NewEventMouse(args[0].Int(), args[1].Int(), button, mod))
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return nil
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}
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func (t *tScreen) unset(this js.Value, args []js.Value) interface{} {
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return nil
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}
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func (t *tScreen) Colors() int {
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return 16777216 // 256 ^ 3
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}
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// resize does nothing, as asking the web window to resize
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// without a specified width or height will cause no change.
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func (t *tScreen) resize() {}
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func (t *tScreen) draw() {
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if t.clear {
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t.clearScreen()
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}
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for y := 0; y < t.h; y++ {
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for x := 0; x < t.w; x++ {
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width := t.drawCell(x, y)
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x += width - 1
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}
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}
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js.Global().Call("show")
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}
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func (t *tScreen) clearScreen() {
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js.Global().Call("clearScreen", t.style.fg.Hex(), t.style.bg.Hex())
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t.clear = false
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}
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func (t *tScreen) drawCell(x, y int) int {
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mainc, combc, style, width := t.cells.GetContent(x, y)
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if !t.cells.Dirty(x, y) {
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return width
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}
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if style == StyleDefault {
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style = t.style
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}
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fg, bg := style.fg.Hex(), style.bg.Hex()
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var combcarr []interface{} = make([]interface{}, len(combc))
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for i, c := range combc {
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combcarr[i] = c
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}
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t.cells.SetDirty(x, y, false)
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js.Global().Call("drawCell", x, y, mainc, combcarr, fg, bg, int(style.attrs))
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return width
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}
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func (t *tScreen) ShowCursor(x, y int) {
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t.Lock()
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js.Global().Call("showCursor", x, y)
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t.Unlock()
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}
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func (t *tScreen) SetCursorStyle(cs CursorStyle) {
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t.Lock()
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js.Global().Call("setCursorStyle", curStyleClasses[cs])
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t.Unlock()
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}
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func (t *tScreen) CharacterSet() string {
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return "UTF-8"
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}
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func (t *tScreen) CanDisplay(r rune, checkFallbacks bool) bool {
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return true
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}
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func (t *tScreen) SetSize(w, h int) {
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if w == t.w && h == t.h {
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return
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}
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t.cells.Invalidate()
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t.cells.Resize(w, h)
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js.Global().Call("resize", w, h)
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t.w, t.h = w, h
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t.PostEvent(NewEventResize(w, h))
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}
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// Suspend simply pauses all input and output, and clears the screen.
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func (t *tScreen) Suspend() error {
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t.Lock()
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if !t.running {
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t.Unlock()
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return nil
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}
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t.running = false
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t.clearScreen()
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t.enableMouse(0)
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t.enablePasting(false)
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js.Global().Set("onKeyEvent", js.FuncOf(t.unset)) // stop keypresses
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return nil
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}
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func (t *tScreen) Resume() error {
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t.Lock()
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if t.running {
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return errors.New("already engaged")
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}
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t.running = true
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t.enableMouse(t.mouseFlags)
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t.enablePasting(t.pasteEnabled)
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js.Global().Set("onKeyEvent", js.FuncOf(t.onKeyEvent))
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t.Unlock()
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return nil
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}
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func (t *tScreen) HasKey(k Key) bool {
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return true
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}
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func (t *tScreen) enablePasting(on bool) {
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if on {
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js.Global().Set("onPaste", js.FuncOf(t.onPaste))
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} else {
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js.Global().Set("onPaste", js.FuncOf(t.unset))
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}
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}
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func (t *tScreen) HasMouse() bool {
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return true
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}
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func (t *tScreen) Resize(x int, y int, w int, h int) {
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t.SetSize(w, h)
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}
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func (t *tScreen) Beep() error {
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js.Global().Call("beep")
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return nil
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}
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// WebKeyNames maps string names reported from HTML
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// (KeyboardEvent.key) to tcell accepted keys.
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var WebKeyNames = map[string]Key{
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"Enter": KeyEnter,
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"Backspace": KeyBackspace,
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"Tab": KeyTab,
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"Backtab": KeyBacktab,
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"Escape": KeyEsc,
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"Backspace2": KeyBackspace2,
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"Delete": KeyDelete,
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"Insert": KeyInsert,
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"ArrowUp": KeyUp,
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"ArrowDown": KeyDown,
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"ArrowLeft": KeyLeft,
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"ArrowRight": KeyRight,
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"Home": KeyHome,
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"End": KeyEnd,
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"UpLeft": KeyUpLeft, // not supported by HTML
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"UpRight": KeyUpRight, // not supported by HTML
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"DownLeft": KeyDownLeft, // not supported by HTML
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"DownRight": KeyDownRight, // not supported by HTML
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"Center": KeyCenter,
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"PgDn": KeyPgDn,
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"PgUp": KeyPgUp,
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"Clear": KeyClear,
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"Exit": KeyExit,
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"Cancel": KeyCancel,
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"Pause": KeyPause,
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"Print": KeyPrint,
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"F1": KeyF1,
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"F2": KeyF2,
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"F3": KeyF3,
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"F4": KeyF4,
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"F5": KeyF5,
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"F6": KeyF6,
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"F7": KeyF7,
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"F8": KeyF8,
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"F9": KeyF9,
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"F10": KeyF10,
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"F11": KeyF11,
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"F12": KeyF12,
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"F13": KeyF13,
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"F14": KeyF14,
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"F15": KeyF15,
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"F16": KeyF16,
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"F17": KeyF17,
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"F18": KeyF18,
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"F19": KeyF19,
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"F20": KeyF20,
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"F21": KeyF21,
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"F22": KeyF22,
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"F23": KeyF23,
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"F24": KeyF24,
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"F25": KeyF25,
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"F26": KeyF26,
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"F27": KeyF27,
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"F28": KeyF28,
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"F29": KeyF29,
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"F30": KeyF30,
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"F31": KeyF31,
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"F32": KeyF32,
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"F33": KeyF33,
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"F34": KeyF34,
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"F35": KeyF35,
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"F36": KeyF36,
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"F37": KeyF37,
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"F38": KeyF38,
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"F39": KeyF39,
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"F40": KeyF40,
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"F41": KeyF41,
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"F42": KeyF42,
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"F43": KeyF43,
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"F44": KeyF44,
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"F45": KeyF45,
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"F46": KeyF46,
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"F47": KeyF47,
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"F48": KeyF48,
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"F49": KeyF49,
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"F50": KeyF50,
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"F51": KeyF51,
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"F52": KeyF52,
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"F53": KeyF53,
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"F54": KeyF54,
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"F55": KeyF55,
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"F56": KeyF56,
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"F57": KeyF57,
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"F58": KeyF58,
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"F59": KeyF59,
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"F60": KeyF60,
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"F61": KeyF61,
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"F62": KeyF62,
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"F63": KeyF63,
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"F64": KeyF64,
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"Ctrl-a": KeyCtrlA, // not supported by HTML- reported as key + modifier ctrl
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"Ctrl-b": KeyCtrlB, // not supported by HTML- reported as key + modifier ctrl
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"Ctrl-c": KeyCtrlC, // not supported by HTML- reported as key + modifier ctrl
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"Ctrl-d": KeyCtrlD, // not supported by HTML- reported as key + modifier ctrl
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"Ctrl-e": KeyCtrlE, // not supported by HTML- reported as key + modifier ctrl
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"Ctrl-f": KeyCtrlF, // not supported by HTML- reported as key + modifier ctrl
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"Ctrl-g": KeyCtrlG, // not supported by HTML- reported as key + modifier ctrl
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"Ctrl-j": KeyCtrlJ, // not supported by HTML- reported as key + modifier ctrl
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"Ctrl-k": KeyCtrlK, // not supported by HTML- reported as key + modifier ctrl
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"Ctrl-l": KeyCtrlL, // not supported by HTML- reported as key + modifier ctrl
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"Ctrl-n": KeyCtrlN, // not supported by HTML- reported as key + modifier ctrl
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"Ctrl-o": KeyCtrlO, // not supported by HTML- reported as key + modifier ctrl
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"Ctrl-p": KeyCtrlP, // not supported by HTML- reported as key + modifier ctrl
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"Ctrl-q": KeyCtrlQ, // not supported by HTML- reported as key + modifier ctrl
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"Ctrl-r": KeyCtrlR, // not supported by HTML- reported as key + modifier ctrl
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"Ctrl-s": KeyCtrlS, // not supported by HTML- reported as key + modifier ctrl
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"Ctrl-t": KeyCtrlT, // not supported by HTML- reported as key + modifier ctrl
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"Ctrl-u": KeyCtrlU, // not supported by HTML- reported as key + modifier ctrl
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"Ctrl-v": KeyCtrlV, // not supported by HTML- reported as key + modifier ctrl
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"Ctrl-w": KeyCtrlW, // not supported by HTML- reported as key + modifier ctrl
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"Ctrl-x": KeyCtrlX, // not supported by HTML- reported as key + modifier ctrl
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"Ctrl-y": KeyCtrlY, // not supported by HTML- reported as key + modifier ctrl
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"Ctrl-z": KeyCtrlZ, // not supported by HTML- reported as key + modifier ctrl
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"Ctrl- ": KeyCtrlSpace, // not supported by HTML- reported as key + modifier ctrl
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"Ctrl-_": KeyCtrlUnderscore, // not supported by HTML- reported as key + modifier ctrl
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"Ctrl-]": KeyCtrlRightSq, // not supported by HTML- reported as key + modifier ctrl
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"Ctrl-\\": KeyCtrlBackslash, // not supported by HTML- reported as key + modifier ctrl
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"Ctrl-^": KeyCtrlCarat, // not supported by HTML- reported as key + modifier ctrl
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}
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var curStyleClasses = map[CursorStyle]string{
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CursorStyleDefault: "cursor-blinking-block",
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CursorStyleBlinkingBlock: "cursor-blinking-block",
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CursorStyleSteadyBlock: "cursor-steady-block",
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CursorStyleBlinkingUnderline: "cursor-blinking-underline",
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CursorStyleSteadyUnderline: "cursor-steady-underline",
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CursorStyleBlinkingBar: "cursor-blinking-bar",
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CursorStyleSteadyBar: "cursor-steady-bar",
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}
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