94 lines
1.8 KiB
Go
94 lines
1.8 KiB
Go
package termutil
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func (buffer *Buffer) shrink(width uint16) {
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var replace []Line
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prevCursor := int(buffer.cursorPosition.Line)
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for i, line := range buffer.lines {
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line.shrink(width)
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// this line fits within the new width restriction, keep it as is and continue
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if line.Len() <= width {
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replace = append(replace, line)
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continue
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}
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wrappedLines := line.wrap(width)
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if prevCursor >= i {
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buffer.cursorPosition.Line += uint64(len(wrappedLines) - 1)
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}
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replace = append(replace, wrappedLines...)
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}
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buffer.cursorPosition.Col = buffer.cursorPosition.Col % width
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buffer.lines = replace
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}
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func (buffer *Buffer) grow(width uint16) {
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var replace []Line
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var current Line
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prevCursor := int(buffer.cursorPosition.Line)
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for i, line := range buffer.lines {
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if !line.wrapped {
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if i > 0 {
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replace = append(replace, current)
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}
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current = newLine()
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}
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if i == prevCursor {
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buffer.cursorPosition.Line -= uint64(i - len(replace))
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}
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for _, cell := range line.cells {
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if len(current.cells) == int(width) {
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replace = append(replace, current)
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current = newLine()
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current.wrapped = true
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}
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current.cells = append(current.cells, cell)
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}
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}
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replace = append(replace, current)
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buffer.lines = replace
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}
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// deprecated
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func (buffer *Buffer) resizeView(width uint16, height uint16) {
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if buffer.viewHeight == 0 {
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buffer.viewWidth = width
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buffer.viewHeight = height
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return
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}
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// scroll to bottom
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buffer.scrollLinesFromBottom = 0
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if width < buffer.viewWidth { // wrap lines if we're shrinking
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buffer.shrink(width)
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buffer.grow(width)
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} else if width > buffer.viewWidth { // unwrap lines if we're growing
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buffer.grow(width)
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}
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buffer.viewWidth = width
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buffer.viewHeight = height
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buffer.resetVerticalMargins(uint(buffer.viewHeight))
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}
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