roar/js/ui/brush.js

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JavaScript
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2018-10-24 15:14:46 +00:00
var brush = (function(){
var brush = new Matrix (5, 5, function(x,y){
var lex = new Lex (x,y)
lex.build()
return lex
})
brush.modified = false
brush.mask = blit.circle
brush.generate = function(){
brush.fill(brush)
brush.mask(brush)
}
brush.bind = function(){
var last_point = [0,0]
var dragging = false
var erasing = false
brush.forEach(function(lex, x, y){
if (lex.bound) return
lex.bound = true
var point = [x,y]
lex.span.addEventListener('contextmenu', function(e){
e.preventDefault()
})
lex.span.addEventListener('mousedown', function(e){
e.preventDefault()
current_canvas = brush
brush.modified = true
dragging = true
erasing = (e.which == "3" || e.ctrlKey)
if (erasing) {
lex.clear()
}
else {
fillColor = brush.bg
lex.assign(brush)
}
brush.focus(x, y)
})
lex.span.addEventListener('mousemove', function(e){
e.preventDefault()
if (! dragging) {
return
}
erasing = (e.which == "3" || e.ctrlKey)
if (erasing) {
lex.clear()
}
else {
lex.assign(brush)
}
brush.focus(x, y)
})
})
window.addEventListener('mouseup', function(e){
dragging = erasing = false
})
}
brush.resize = function(w, h){
w = this.w = clamp(w, this.min, this.max)
h = this.h = clamp(h, this.min, this.max)
brush.rebuild()
controls.brush_w.char = "" + w
controls.brush_w.build()
controls.brush_h.char = "" + h
controls.brush_h.build()
}
brush.size_add = function(w, h){
brush.resize(brush.w + w, brush.h + h)
}
brush.expand = function(i){
brush.size_add(i, i)
}
brush.contract = function(i){
brush.size_add(-i, -i)
}
brush.load = function(lex){
brush.char = lex.char
brush.fg = lex.fg
brush.bg = lex.bg
brush.opacity = 1
}
brush.min = 1
brush.max = 100
brush.char = " "
brush.fg = 0
brush.bg = 1
brush.opacity = 1
brush.draw_fg = true
brush.draw_bg = true
brush.draw_char = true
return brush
})()