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Add ctrl+arrow key functionality

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EnumDev 2025-06-13 18:10:54 +03:00
parent 1b6b45aaea
commit cc3b4ecf18
1 changed files with 97 additions and 22 deletions
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119
src/window.go
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@ -187,16 +187,47 @@ func (window *Window) Draw() {
func (window *Window) input(ev *tcell.EventKey) {
if ev.Key() == tcell.KeyRight { // Navigation Keys
if window.CursorMode == CursorModeBuffer {
// Get original cursor position
pos := window.CurrentBuffer.CursorPos
if ev.Modifiers()&tcell.ModCtrl != 0 {
// Move cursor to start of word
// Set variable to one character right of current position
endOfWord := pos + 1
if endOfWord >= len(window.CurrentBuffer.Contents) {
endOfWord = len(window.CurrentBuffer.Contents)
}
// Skip all spaces
for endOfWord < len(window.CurrentBuffer.Contents) && unicode.IsSpace(rune(window.CurrentBuffer.Contents[endOfWord])) {
endOfWord++
}
// Find end of word
for endOfWord < len(window.CurrentBuffer.Contents) && !unicode.IsSpace(rune(window.CurrentBuffer.Contents[endOfWord])) {
endOfWord++
}
window.SetCursorPos(endOfWord)
} else {
// Move cursor one character backwards
window.SetCursorPos(window.CurrentBuffer.CursorPos + 1)
}
// Add to selection
if ev.Modifiers() == tcell.ModShift {
if ev.Modifiers()&tcell.ModShift != 0 {
if window.CurrentBuffer.Selection == nil {
// Cancel cursor movement when creating selection without holding ctrl
if ev.Modifiers()&tcell.ModCtrl == 0 {
window.SetCursorPos(pos)
}
window.CurrentBuffer.Selection = &Selection{
selectionStart: window.CurrentBuffer.CursorPos,
selectionStart: pos,
selectionEnd: window.CurrentBuffer.CursorPos,
}
return
} else {
window.CurrentBuffer.Selection.selectionEnd = window.CurrentBuffer.CursorPos + 1
window.CurrentBuffer.Selection.selectionEnd = window.CurrentBuffer.CursorPos
}
// Prevent selecting dummy character at the end of the buffer
if window.CurrentBuffer.Selection.selectionEnd >= len(window.CurrentBuffer.Contents) {
@ -205,46 +236,83 @@ func (window *Window) input(ev *tcell.EventKey) {
} else if window.CurrentBuffer.Selection != nil {
// Unset selection
window.CurrentBuffer.Selection = nil
return
}
// Move cursor
window.SetCursorPos(window.CurrentBuffer.CursorPos + 1)
}
} else if ev.Key() == tcell.KeyLeft {
if window.CursorMode == CursorModeBuffer {
// Get original cursor position
pos := window.CurrentBuffer.CursorPos
if ev.Modifiers()&tcell.ModCtrl != 0 {
// Move cursor to start of word
// Set variable to one character left of current position
startOfWord := pos - 1
if startOfWord < 0 {
startOfWord = 0
}
// Skip all spaces
for startOfWord >= 0 && len(window.CurrentBuffer.Contents) != 0 && unicode.IsSpace(rune(window.CurrentBuffer.Contents[startOfWord])) {
startOfWord--
}
// Find start of word
for startOfWord >= 0 && len(window.CurrentBuffer.Contents) != 0 && !unicode.IsSpace(rune(window.CurrentBuffer.Contents[startOfWord])) {
startOfWord--
}
// Move one character to the right
startOfWord++
window.SetCursorPos(startOfWord)
} else {
// Move cursor one character backwards
window.SetCursorPos(window.CurrentBuffer.CursorPos - 1)
}
// Add to selection
if ev.Modifiers() == tcell.ModShift {
if ev.Modifiers()&tcell.ModShift != 0 {
if window.CurrentBuffer.Selection == nil {
// Cancel cursor movement when creating selection without holding ctrl
if ev.Modifiers()&tcell.ModCtrl == 0 {
window.SetCursorPos(pos)
}
window.CurrentBuffer.Selection = &Selection{
selectionStart: window.CurrentBuffer.CursorPos,
selectionStart: pos,
selectionEnd: window.CurrentBuffer.CursorPos,
}
return
} else {
window.CurrentBuffer.Selection.selectionEnd = window.CurrentBuffer.CursorPos - 1
window.CurrentBuffer.Selection.selectionEnd = window.CurrentBuffer.CursorPos
}
} else if window.CurrentBuffer.Selection != nil {
// Unset selection
window.CurrentBuffer.Selection = nil
return
}
// Move cursor
window.SetCursorPos(window.CurrentBuffer.CursorPos - 1)
}
} else if ev.Key() == tcell.KeyUp {
if window.CursorMode == CursorModeBuffer {
// Get original cursor position
pos := window.CurrentBuffer.CursorPos
// Move cursor
x, y := window.GetCursorPos2D()
window.SetCursorPos2D(x, y-1)
if ev.Modifiers()&tcell.ModCtrl != 0 {
// Move cursor to top of buffer
window.SetCursorPos(0)
} else {
// Move cursor one line up
x, y := window.GetCursorPos2D()
window.SetCursorPos2D(x, y-1)
}
// Add to selection
if ev.Modifiers() == tcell.ModShift {
if ev.Modifiers()&tcell.ModShift != 0 {
// Add to selection
if window.CurrentBuffer.Selection == nil {
window.CurrentBuffer.Selection = &Selection{
selectionStart: window.CurrentBuffer.CursorPos,
selectionEnd: pos,
selectionStart: pos,
selectionEnd: window.CurrentBuffer.CursorPos,
}
} else {
window.CurrentBuffer.Selection.selectionEnd = window.CurrentBuffer.CursorPos
@ -279,11 +347,18 @@ func (window *Window) input(ev *tcell.EventKey) {
if window.CursorMode == CursorModeBuffer {
// Get original cursor position
pos := window.CurrentBuffer.CursorPos
// Move cursor
x, y := window.GetCursorPos2D()
window.SetCursorPos2D(x, y+1)
if ev.Modifiers()&tcell.ModCtrl != 0 {
// Move cursor to bottom of buffer
window.SetCursorPos(len(window.CurrentBuffer.Contents))
} else {
// Move cursor one line down
x, y := window.GetCursorPos2D()
window.SetCursorPos2D(x, y+1)
}
// Add to selection
if ev.Modifiers() == tcell.ModShift {
if ev.Modifiers()&tcell.ModShift != 0 {
// Add to selection
if window.CurrentBuffer.Selection == nil {
window.CurrentBuffer.Selection = &Selection{