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'use strict'
function Cursor (orca, terminal) {
this.x = 0
this.y = 0
this.w = 1
this.h = 1
this.mode = 0
this.block = []
this.move = function (x, y) {
this.x = clamp(this.x + x, 0, orca.w - 1)
this.y = clamp(this.y - y, 0, orca.h - 1)
terminal.update()
}
this.scale = function (x, y) {
this.w = clamp(this.w + x, 1, orca.w - this.x)
this.h = clamp(this.h - y, 1, orca.h - this.y)
terminal.update()
}
this.reset = function () {
this.w = 1
this.h = 1
this.mode = 0
}
this.selectAll = function () {
this.x = 0
this.y = 0
this.w = orca.w
this.h = orca.h
this.mode = 0
terminal.update()
}
this.copy = function () {
this.block = this.getBlock()
}
this.cut = function () {
this.copy()
this.erase()
}
this.paste = function () {
this.writeBlock(this.toRect(), this.block)
}
this.write = function (g) {
if (this.mode === 2) {
terminal.io.sendKey(event.key)
return
}
orca.write(this.x, this.y, g)
if (this.mode === 1) {
this.move(1, 0)
}
terminal.history.record()
}
this.erase = function () {
if (this.w === 1 && this.h === 1 && orca.glyphAt(this.x, this.y) === '.') { this.move(-1, 0); return } // Backspace Effect
this.eraseBlock(this.x, this.y, this.w, this.h)
this.reset()
terminal.history.record()
}
this.toggleMode = function (val) {
this.mode = this.mode === 0 ? val : 0
}
this.inspect = function (name = true, ports = false) {
if (this.w > 1 || this.h > 1) { return 'multi' }
const port = terminal.portAt(this.x, this.y)
if (port) { return `${port.name}` }
if (orca.lockAt(this.x, this.y)) { return 'locked' }
return 'empty'
}
// Block
this.getBlock = function (rect = this.toRect()) {
const block = []
for (let _y = rect.y; _y < rect.y + rect.h; _y++) {
const line = []
for (let _x = rect.x; _x < rect.x + rect.w; _x++) {
line.push(orca.glyphAt(_x, _y))
}
block.push(line)
}
return block
}
this.writeBlock = function (rect, block) {
if (!block || block.length === 0) { return }
let _y = rect.y
for (const lineId in block) {
let _x = rect.x
for (const glyphId in block[lineId]) {
orca.write(_x, _y, block[lineId][glyphId])
_x++
}
_y++
}
terminal.history.record()
}
this.eraseBlock = function (x, y, w, h) {
for (let _y = y; _y < y + h; _y++) {
for (let _x = x; _x < x + w; _x++) {
orca.write(_x, _y, '.')
}
}
terminal.history.record()
}
this.toRect = function () {
return { x: this.x, y: this.y, w: this.w, h: this.h }
}
function clamp (v, min, max) { return v < min ? min : v > max ? max : v }
}
module.exports = Cursor
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