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Renderer comments

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This commit is contained in:
Christian Rocha 2020-06-16 11:05:04 -04:00
parent 01032f0579
commit da86f9ac1a
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1 changed files with 15 additions and 2 deletions
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17
renderer.go
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@ -10,9 +10,21 @@ import (
) )
const ( const (
// BlankSymbol, in this case, is used to signal to the renderer to skip
// over a given cell and not perform any rendering on it. The const is
// literally the Unicode "BLANK SYMBOL" (U+2422).
//
// This character becomes useful when handing of portions of the screen to
// a separate renderer.
BlankSymbol = "␢"
// defaultFramerate specifies the maximum interval at which we should
// update the view.
defaultFramerate = time.Second / 60 defaultFramerate = time.Second / 60
) )
// renderer is a timer-based renderer, updating the view at a given framerate
// to avoid overloading the terminal emulator.
type renderer struct { type renderer struct {
out io.Writer out io.Writer
buf bytes.Buffer buf bytes.Buffer
@ -74,8 +86,9 @@ func (r *renderer) flush() {
// 1) We'd need to maintain the terminal dimensions internally and listen // 1) We'd need to maintain the terminal dimensions internally and listen
// for window size changes. // for window size changes.
// //
// 2) We'd need to measure the width of lines, accounting for double-byte // 2) We'd need to measure the width of lines, accounting for multi-cell
// widths. We'd use something like go-runewidth // rune widths, commonly found in Chinese, Japanese, Korean, emojis and so
// on. We'd use something like go-runewidth
// (http://github.com/mattn/go-runewidth). // (http://github.com/mattn/go-runewidth).
// //
// 3) We'd need to measure the width of lines excluding ANSI escape // 3) We'd need to measure the width of lines excluding ANSI escape