diff options
Diffstat (limited to 'vendor/github.com/gizak/termui/render.go')
-rw-r--r-- | vendor/github.com/gizak/termui/render.go | 135 |
1 files changed, 135 insertions, 0 deletions
diff --git a/vendor/github.com/gizak/termui/render.go b/vendor/github.com/gizak/termui/render.go new file mode 100644 index 000000000..36544f063 --- /dev/null +++ b/vendor/github.com/gizak/termui/render.go @@ -0,0 +1,135 @@ +// Copyright 2016 Zack Guo <gizak@icloud.com>. All rights reserved. +// Use of this source code is governed by a MIT license that can +// be found in the LICENSE file. + +package termui + +import ( + "image" + "sync" + "time" + + tm "github.com/nsf/termbox-go" +) + +// Bufferer should be implemented by all renderable components. +type Bufferer interface { + Buffer() Buffer +} + +// Init initializes termui library. This function should be called before any others. +// After initialization, the library must be finalized by 'Close' function. +func Init() error { + if err := tm.Init(); err != nil { + return err + } + + sysEvtChs = make([]chan Event, 0) + go hookTermboxEvt() + + renderJobs = make(chan []Bufferer) + //renderLock = new(sync.RWMutex) + + Body = NewGrid() + Body.X = 0 + Body.Y = 0 + Body.BgColor = ThemeAttr("bg") + Body.Width = TermWidth() + + DefaultEvtStream.Init() + DefaultEvtStream.Merge("termbox", NewSysEvtCh()) + DefaultEvtStream.Merge("timer", NewTimerCh(time.Second)) + DefaultEvtStream.Merge("custom", usrEvtCh) + + DefaultEvtStream.Handle("/", DefualtHandler) + DefaultEvtStream.Handle("/sys/wnd/resize", func(e Event) { + w := e.Data.(EvtWnd) + Body.Width = w.Width + }) + + DefaultWgtMgr = NewWgtMgr() + DefaultEvtStream.Hook(DefaultWgtMgr.WgtHandlersHook()) + + go func() { + for bs := range renderJobs { + render(bs...) + } + }() + + return nil +} + +// Close finalizes termui library, +// should be called after successful initialization when termui's functionality isn't required anymore. +func Close() { + tm.Close() +} + +var renderLock sync.Mutex + +func termSync() { + renderLock.Lock() + tm.Sync() + termWidth, termHeight = tm.Size() + renderLock.Unlock() +} + +// TermWidth returns the current terminal's width. +func TermWidth() int { + termSync() + return termWidth +} + +// TermHeight returns the current terminal's height. +func TermHeight() int { + termSync() + return termHeight +} + +// Render renders all Bufferer in the given order from left to right, +// right could overlap on left ones. +func render(bs ...Bufferer) { + + for _, b := range bs { + + buf := b.Buffer() + // set cels in buf + for p, c := range buf.CellMap { + if p.In(buf.Area) { + + tm.SetCell(p.X, p.Y, c.Ch, toTmAttr(c.Fg), toTmAttr(c.Bg)) + + } + } + + } + + renderLock.Lock() + // render + tm.Flush() + renderLock.Unlock() +} + +func Clear() { + tm.Clear(tm.ColorDefault, toTmAttr(ThemeAttr("bg"))) +} + +func clearArea(r image.Rectangle, bg Attribute) { + for i := r.Min.X; i < r.Max.X; i++ { + for j := r.Min.Y; j < r.Max.Y; j++ { + tm.SetCell(i, j, ' ', tm.ColorDefault, toTmAttr(bg)) + } + } +} + +func ClearArea(r image.Rectangle, bg Attribute) { + clearArea(r, bg) + tm.Flush() +} + +var renderJobs chan []Bufferer + +func Render(bs ...Bufferer) { + //go func() { renderJobs <- bs }() + renderJobs <- bs +} |