64 lines
1.2 KiB
Go
64 lines
1.2 KiB
Go
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package tui
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import (
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"github.com/gdamore/tcell"
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"github.com/mattn/go-runewidth"
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)
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type textDrawer struct {
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top, left, offset int
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region region
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screen tcell.Screen
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}
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func (d *textDrawer) setString(str string, style tcell.Style) {
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top := d.region.top + d.top
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left := d.region.left + d.left + d.offset
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right := d.region.left + d.region.width
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for _, c := range str {
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w := runewidth.RuneWidth(c)
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if left+w > right {
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break
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}
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if left+w == right && c != ' ' {
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if int(style)&int(tcell.AttrReverse) != 0 {
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d.screen.SetContent(left, top, ' ', nil, style)
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}
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break
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}
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d.screen.SetContent(left, top, c, nil, style)
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left += w
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}
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}
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func (d *textDrawer) setByte(b byte, style tcell.Style) {
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top := d.region.top + d.top
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left := d.region.left + d.left + d.offset
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d.screen.SetContent(left, top, rune(b), nil, style)
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}
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func (d *textDrawer) setTop(top int) *textDrawer {
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d.top = top
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return d
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}
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func (d *textDrawer) addTop(diff int) *textDrawer {
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d.top += diff
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return d
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}
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func (d *textDrawer) setLeft(left int) *textDrawer {
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d.left = left
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return d
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}
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func (d *textDrawer) addLeft(diff int) *textDrawer {
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d.left += diff
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return d
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}
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func (d *textDrawer) setOffset(offset int) *textDrawer {
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d.offset = offset
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return d
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}
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