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Refactoring and documentation

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This commit is contained in:
Tulir Asokan
2018-03-23 23:39:17 +02:00
parent 997948ccad
commit 38364646a7
3 changed files with 40 additions and 36 deletions
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8
ui/widget/message-view.go
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@ -325,10 +325,10 @@ func (view *MessageView) Draw(screen tcell.Screen) {
}
totalHeight := float64(len(view.textBuffer))
// ceil(height / (totalHeight / height))
// The height of the scrollbar: ceil(height / (totalHeight / height))
scrollBarHeight := int(math.Ceil(float64(height) / (totalHeight / float64(height))))
// height - ceil(scrollOffset) / totalHeight * height
scrollBarPos := height - int(math.Ceil(float64(view.ScrollOffset) / totalHeight * float64(height)))
// The position of the scrollbar from the bottom: height - ceil(scrollOffset) / totalHeight * height
scrollBarPos := height - int(math.Ceil(float64(view.ScrollOffset)/totalHeight*float64(height)))
var prevMeta types.MessageMeta
firstLine := true
@ -349,7 +349,7 @@ func (view *MessageView) Draw(screen tcell.Screen) {
} else if line == height-1 && view.ScrollOffset == 0 {
// At bottom of message history
borderChar = '┴'
} else if line >= scrollBarPos && line < scrollBarPos + scrollBarHeight {
} else if line >= scrollBarPos && line < scrollBarPos+scrollBarHeight {
// Scroll bar
borderChar = '║'
borderStyle = borderStyle.Foreground(tcell.ColorGreen)