mirror of
https://github.com/diamondburned/cchat-gtk.git
synced 2024-11-01 12:04:15 +00:00
140 lines
2.9 KiB
Go
140 lines
2.9 KiB
Go
package completion
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import (
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"unicode"
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"github.com/diamondburned/cchat-gtk/internal/ui/primitives"
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"github.com/gotk3/gotk3/gdk"
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"github.com/gotk3/gotk3/gtk"
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)
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var popoverCSS = primitives.PrepareCSS(`
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popover {
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border-radius: 0;
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}
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`)
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const (
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MinPopoverWidth = 300
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)
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func NewPopover(relto gtk.IWidget) *gtk.Popover {
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p, _ := gtk.PopoverNew(relto)
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p.SetSizeRequest(MinPopoverWidth, -1)
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p.SetModal(false)
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p.SetPosition(gtk.POS_TOP)
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primitives.AttachCSS(p, popoverCSS)
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return p
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}
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type KeyDownHandlerFn = func(gtk.IWidget, *gdk.Event) bool
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func KeyDownHandler(l *gtk.ListBox, focus func()) KeyDownHandlerFn {
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return func(w gtk.IWidget, ev *gdk.Event) bool {
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// Do we have any entries? If not, don't bother.
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var length = int(l.GetChildren().Length())
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if length == 0 {
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// passthrough.
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return false
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}
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var evKey = gdk.EventKeyNewFromEvent(ev)
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var key = evKey.KeyVal()
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switch key {
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// Did we press an arrow key?
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case gdk.KEY_Up, gdk.KEY_Down:
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// Yes, start moving the list up and down.
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i := l.GetSelectedRow().GetIndex()
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switch key {
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case gdk.KEY_Up:
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if i--; i < 0 {
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i = length - 1
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}
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case gdk.KEY_Down:
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if i++; i >= length {
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i = 0
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}
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}
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row := l.GetRowAtIndex(i)
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row.GrabFocus() // scroll
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l.SelectRow(row) // select
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focus() // unfocus
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// Did we press the Enter or Tab key?
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case gdk.KEY_Return, gdk.KEY_Tab:
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// Activate the current row.
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l.GetSelectedRow().Activate()
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focus()
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default:
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// passthrough events if none matches.
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return false
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}
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return true
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}
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}
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func SwapWord(b *gtk.TextBuffer, word string, offset int64) {
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// Get iter for word replacing.
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start, end := GetWordIters(b, offset)
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b.Delete(start, end)
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b.Insert(start, word+" ")
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}
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func CursorRect(i *gtk.TextView) gdk.Rectangle {
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r, _ := i.GetCursorLocations(nil)
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x, _ := i.BufferToWindowCoords(gtk.TEXT_WINDOW_WIDGET, r.GetX(), r.GetY())
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r.SetX(x)
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r.SetY(0)
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return *r
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}
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func State(buf *gtk.TextBuffer) (text string, offset int64, blank bool) {
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// obtain current state
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mark := buf.GetInsert()
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iter := buf.GetIterAtMark(mark)
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// obtain the input string and the current cursor position
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start, end := buf.GetBounds()
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text, _ = buf.GetText(start, end, true)
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offset = int64(iter.GetOffset())
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// We need the rune before the cursor.
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iter.BackwardChar()
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char := iter.GetChar()
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// Treat NULs as blanks.
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blank = unicode.IsSpace(char) || char == '\x00'
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return
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}
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const searchFlags = 0 |
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gtk.TEXT_SEARCH_TEXT_ONLY |
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gtk.TEXT_SEARCH_VISIBLE_ONLY
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func GetWordIters(buf *gtk.TextBuffer, offset int64) (start, end *gtk.TextIter) {
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iter := buf.GetIterAtOffset(int(offset))
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var ok bool
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// Seek backwards for space or start-of-line:
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_, start, ok = iter.BackwardSearch(" ", searchFlags, nil)
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if !ok {
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start = buf.GetStartIter()
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}
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// Seek forwards for space or end-of-line:
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_, end, ok = iter.ForwardSearch(" ", searchFlags, nil)
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if !ok {
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end = buf.GetEndIter()
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}
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return
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}
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