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Add TextView.SetReindexBuffer

tablepad
Trevor Slocum 2 years ago
parent
commit
a6a473f866
  1. 1
      CHANGELOG
  2. 4
      FORK.md
  3. 29
      textview.go

1
CHANGELOG

@ -1,6 +1,7 @@
v1.4.9 (WIP)
- Add InputField.GetCursorPosition and InputField.SetCursorPosition
- Add Table.Sort, Table.SetSortFunc and Table.SetSortClicked
- Add TextView.SetReindexBuffer
- Upgrade tcell to v2: includes strikethrough support
v1.4.8 (2020-08-11)

4
FORK.md

@ -43,6 +43,10 @@ All clicks are handled as single clicks until an interval is set with [Applicati
Call [Box.SetBackgroundTransparent](https://docs.rocketnine.space/gitlab.com/tslocum/cview/#Box.SetBackgroundTransparent)
to enable background transparency.
## Tables are sorted when a fixed row is clicked by default
Call [Table.SetSortClicked] to disable this behavior.
## Lists and Forms do not wrap around by default
Call [List.SetWrapAround](https://docs.rocketnine.space/gitlab.com/tslocum/cview/#List.SetWrapAround) to wrap around when navigating.

29
textview.go

@ -109,6 +109,9 @@ type TextView struct {
// to be re-indexed.
index []*textViewIndex
// If set to true, the buffer will be reindexed each time it is modified.
reindex bool
// The text alignment, one of AlignLeft, AlignCenter, or AlignRight.
align int
@ -200,6 +203,7 @@ func NewTextView() *TextView {
Box: NewBox(),
highlights: make(map[string]struct{}),
lineOffset: -1,
reindex: true,
scrollable: true,
align: AlignLeft,
wrap: true,
@ -478,7 +482,9 @@ func (t *TextView) Clear() *TextView {
func (t *TextView) clear() *TextView {
t.buffer = nil
t.recentBytes = nil
t.index = nil
if t.reindex {
t.index = nil
}
return t
}
@ -752,11 +758,30 @@ func (t *TextView) write(p []byte) (n int, err error) {
t.clipBuffer()
// Reset the index.
t.index = nil
if t.reindex {
t.index = nil
}
return len(p), nil
}
// SetReindexBuffer set a flag controlling whether the buffer is reindexed when
// it is modified. This improves the performance of TextViews whose contents
// always have line-breaks in the same location. This must be called after the
// buffer has been indexed.
func (t *TextView) SetReindexBuffer(reindex bool) *TextView {
t.Lock()
defer t.Unlock()
t.reindex = reindex
if reindex {
t.index = nil
}
return t
}
// reindexBuffer re-indexes the buffer such that we can use it to easily draw
// the buffer onto the screen. Each line in the index will contain a pointer
// into the buffer from which on we will print text. It will also contain the

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