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Add selection with click and drag

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This commit is contained in:
Zachary Yedidia
2016-03-18 20:01:05 -04:00
parent 6da745a463
commit 4efc47c0fb
2 changed files with 37 additions and 10 deletions
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24
cursor.go
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@@ -13,8 +13,10 @@ type Cursor struct {
y int
loc int
selectionStart int
selectionEnd int
selectionStart int
selectionStartX int
selectionStartY int
selectionEnd int
}
func (c *Cursor) resetSelection() {
@@ -23,11 +25,19 @@ func (c *Cursor) resetSelection() {
}
func (c *Cursor) hasSelection() bool {
return (c.selectionEnd - c.selectionStart) != 0
return c.selectionEnd != c.selectionStart
}
func (c *Cursor) deleteSelected() {
// TODO: Implement this
if c.selectionStart > c.selectionEnd {
c.v.buf.remove(c.selectionEnd, c.selectionStart+1)
// Since the cursor is already at the selection start we don't need to move
} else {
c.v.buf.remove(c.selectionStart, c.selectionEnd+1)
c.loc -= c.selectionEnd - c.selectionStart
c.x = c.selectionStartX
c.y = c.selectionStartY
}
}
func (c *Cursor) runeUnder() rune {
@@ -101,7 +111,11 @@ func (c *Cursor) getCharPosInLine(lineNum, visualPos int) int {
visualPos = count(visualLine)
}
numTabs := numOccurences(visualLine[:visualPos], '\t')
return visualPos - (tabSize-1)*numTabs
if visualPos >= (tabSize-1)*numTabs {
return visualPos - (tabSize-1)*numTabs
} else {
return visualPos / tabSize
}
}
func (c *Cursor) getVisualX() int {