562ca47996
Y axis label printing stopped before the top line Sometimes large data values would land on the border or beyond the box fix typo
136 lines
2.7 KiB
Go
136 lines
2.7 KiB
Go
// Copyright 2016 Zack Guo <gizak@icloud.com>. All rights reserved.
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// Use of this source code is governed by a MIT license that can
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// be found in the LICENSE file.
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package termui
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import (
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"image"
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"sync"
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"time"
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tm "github.com/nsf/termbox-go"
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)
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// Bufferer should be implemented by all renderable components.
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type Bufferer interface {
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Buffer() Buffer
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}
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// Init initializes termui library. This function should be called before any others.
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// After initialization, the library must be finalized by 'Close' function.
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func Init() error {
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if err := tm.Init(); err != nil {
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return err
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}
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sysEvtChs = make([]chan Event, 0)
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go hookTermboxEvt()
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renderJobs = make(chan []Bufferer)
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//renderLock = new(sync.RWMutex)
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Body = NewGrid()
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Body.X = 0
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Body.Y = 0
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Body.BgColor = ThemeAttr("bg")
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Body.Width = TermWidth()
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DefaultEvtStream.Init()
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DefaultEvtStream.Merge("termbox", NewSysEvtCh())
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DefaultEvtStream.Merge("timer", NewTimerCh(time.Second))
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DefaultEvtStream.Merge("custom", usrEvtCh)
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DefaultEvtStream.Handle("/", DefualtHandler)
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DefaultEvtStream.Handle("/sys/wnd/resize", func(e Event) {
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w := e.Data.(EvtWnd)
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Body.Width = w.Width
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})
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DefaultWgtMgr = NewWgtMgr()
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DefaultEvtStream.Hook(DefaultWgtMgr.WgtHandlersHook())
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go func() {
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for bs := range renderJobs {
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render(bs...)
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}
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}()
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return nil
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}
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// Close finalizes termui library,
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// should be called after successful initialization when termui's functionality isn't required anymore.
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func Close() {
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tm.Close()
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}
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var renderLock sync.Mutex
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func termSync() {
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renderLock.Lock()
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tm.Sync()
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termWidth, termHeight = tm.Size()
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renderLock.Unlock()
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}
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// TermWidth returns the current terminal's width.
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func TermWidth() int {
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termSync()
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return termWidth
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}
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// TermHeight returns the current terminal's height.
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func TermHeight() int {
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termSync()
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return termHeight
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}
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// Render renders all Bufferer in the given order from left to right,
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// right could overlap on left ones.
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func render(bs ...Bufferer) {
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for _, b := range bs {
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buf := b.Buffer()
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// set cels in buf
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for p, c := range buf.CellMap {
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if p.In(buf.Area) {
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tm.SetCell(p.X, p.Y, c.Ch, toTmAttr(c.Fg), toTmAttr(c.Bg))
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}
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}
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}
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renderLock.Lock()
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// render
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tm.Flush()
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renderLock.Unlock()
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}
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func Clear() {
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tm.Clear(tm.ColorDefault, toTmAttr(ThemeAttr("bg")))
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}
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func clearArea(r image.Rectangle, bg Attribute) {
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for i := r.Min.X; i < r.Max.X; i++ {
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for j := r.Min.Y; j < r.Max.Y; j++ {
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tm.SetCell(i, j, ' ', tm.ColorDefault, toTmAttr(bg))
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}
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}
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}
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func ClearArea(r image.Rectangle, bg Attribute) {
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clearArea(r, bg)
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tm.Flush()
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}
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var renderJobs chan []Bufferer
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func Render(bs ...Bufferer) {
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//go func() { renderJobs <- bs }()
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renderJobs <- bs
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}
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