2018-12-26 10:34:57 +03:00

53 lines
2.1 KiB
Lua

local GUI = require("GUI")
local image = require("image")
local tool = {}
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tool.shortcut = "Er"
tool.keyCode = 18
tool.about = "Eraser tool will cleanup pixels just like brush tool. You can configure of what data is need to be erased"
local backgroundSwitch = GUI.switchAndLabel(1, 1, width, 6, 0x66DB80, 0x2D2D2D, 0xE1E1E1, 0x878787, "Erase background:", true)
local foregroundSwitch = GUI.switchAndLabel(1, 1, width, 6, 0x66DB80, 0x2D2D2D, 0xE1E1E1, 0x878787, "Erase foreground:", true)
local alphaSwitch = GUI.switchAndLabel(1, 1, width, 6, 0x66DB80, 0x2D2D2D, 0xE1E1E1, 0x878787, "Erase alpha:", true)
local symbolSwitch = GUI.switchAndLabel(1, 1, width, 6, 0x66DB80, 0x2D2D2D, 0xE1E1E1, 0x878787, "Erase symbol:", true)
local radiusSlider = GUI.slider(1, 1, 1, 0x66DB80, 0x2D2D2D, 0xE1E1E1, 0x878787, 1, 8, 1, false, "Radius: ", " px")
radiusSlider.height = 2
radiusSlider.roundValues = true
tool.onSelection = function(application)
application.currentToolLayout:addChild(backgroundSwitch)
application.currentToolLayout:addChild(foregroundSwitch)
application.currentToolLayout:addChild(alphaSwitch)
application.currentToolLayout:addChild(symbolSwitch)
application.currentToolLayout:addChild(radiusSlider)
end
tool.eventHandler = function(application, object, e1, e2, e3, e4)
if e1 == "touch" or e1 == "drag" then
local x, y = e3 - application.image.x + 1, e4 - application.image.y + 1
local meow = math.floor(radiusSlider.value)
for j = y - meow + 1, y + meow - 1 do
for i = x - meow + 1, x + meow - 1 do
if i >= 1 and i <= application.image.width and j >= 1 and j <= application.image.height then
local background, foreground, alpha, symbol = image.get(application.image.data, i, j)
image.set(application.image.data, i, j,
backgroundSwitch.switch.state and 0x0 or background,
foregroundSwitch.switch.state and 0x0 or foreground,
alphaSwitch.switch.state and 1 or alpha,
symbolSwitch.switch.state and " " or symbol
)
end
end
end
application:draw()
end
end
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return tool