aseprite/tests/scripts/save_file_command.lua

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-- Copyright (C) 2022-2023 Igara Studio S.A.
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--
-- This file is released under the terms of the MIT license.
-- Read LICENSE.txt for more information.
function fix_images(testImg, scale, fileExt, c, cm, c1)
-- GIF file is loaded as indexed, so we have to convert from indexed
-- to the ColorMode
if c.colorMode ~= cm then
assert(fileExt == "gif" or fileExt == "bmp")
if cm == ColorMode.RGB then
app.sprite = c
app.command.ChangePixelFormat{ format="rgb" }
elseif cm == ColorMode.GRAYSCALE then
app.sprite = c
app.command.ChangePixelFormat{ format="grayscale" }
else
assert(false)
end
end
-- With file formats that don't support alpha channel, we
-- compare totally transparent pixels (alpha=0) with black.
if fileExt == "tga" and cm == ColorMode.GRAYSCALE then
local pixel
if cm == ColorMode.RGB then
pixel = c1.rgbaPixel
elseif cm == ColorMode.GRAYSCALE then
pixel = c1.grayPixel
else
pixel = 0 -- Do nothing in indexed
end
for p in testImg:pixels() do
if p() == 0 then p(pixel) end
end
end
testImg:resize(testImg.width*scale, testImg.height*scale)
end
function compatible_modes(fileExt, cm)
return
-- TODO support saving any color mode to FLI files on the fly
(fileExt ~= "fli" or cm == ColorMode.INDEXED) and
-- TODO Review grayscale support in bmp files
(fileExt ~= "bmp" or cm ~= ColorMode.GRAYSCALE) and
-- TODO Review grayscale/indexed support in webp files
(fileExt ~= "webp" or cm == ColorMode.RGB)
end
for _,cm in ipairs{ ColorMode.RGB,
ColorMode.GRAYSCALE,
ColorMode.INDEXED } do
local spr = Sprite(32, 32, cm)
spr.palettes[1]:resize(3)
spr.palettes[1]:setColor(0, Color(0, 0, 0, 0))
spr.palettes[1]:setColor(1, Color(0, 0, 0, 255))
spr.palettes[1]:setColor(2, Color(255, 0, 0, 255))
local c1, c2
if cm == ColorMode.RGB then
c1 = Color(0, 0, 0)
c2 = Color(255, 0, 0)
elseif cm == ColorMode.GRAYSCALE then
c1 = Color{ gray=0 }
c2 = Color{ gray=255 }
elseif cm == ColorMode.INDEXED then
c1 = 1
c2 = 2
end
app.useTool{ color=c1, brush=Brush(1),
tool="filled_ellipse", points={{0,0},{31,31}} }
app.useTool{ color=c2, brush=Brush(1),
tool="filled_ellipse", points={{4,4},{27,27}} }
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spr.filename = "_test_a.aseprite"
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app.command.SaveFile()
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assert(spr.filename == "_test_a.aseprite")
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app.command.SaveFileAs{ filename="_test_b.png" }
assert(spr.filename == "_test_b.png")
app.command.SaveFileCopyAs{ filename="_test_c.png" }
assert(spr.filename == "_test_b.png")
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-- Scale
for _,fn in ipairs{ "_test_c_scaled.bmp",
"_test_c_scaled.fli",
"_test_c_scaled.gif",
"_test_c_scaled.png",
"_test_c_scaled.tga",
"_test_c_scaled.webp" } do
local fileExt = app.fs.fileExtension(fn)
if compatible_modes(fileExt, cm) then
for _,scale in ipairs({ 0.25, 0.5, 1, 2, 3, 4 }) do
print(fn, scale, cm)
app.sprite = spr
app.command.SaveFileCopyAs{ filename=fn, scale=scale }
local c = app.open(fn)
assert(c.width == spr.width*scale)
assert(c.height == spr.height*scale)
local testImg = Image(spr.cels[1].image)
fix_images(testImg, scale, fileExt, c, cm, c1)
if not c.cels[1].image:isEqual(testImg) then
c.cels[1].image:saveAs("_testA.png")
testImg:saveAs("_testB.png")
end
assert(c.cels[1].image.colorMode == testImg.colorMode)
assert(c.cels[1].image:isEqual(testImg))
end
end
end
-- Scale + Slices
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local slice = spr:newSlice(Rectangle(1, 2, 8, 15))
slice.name = "small_slice"
for _,fn in ipairs({ "_test_c_small_slice.bmp",
"_test_c_small_slice.fli",
"_test_c_small_slice.gif",
"_test_c_small_slice.png",
"_test_c_small_slice.tga",
"_test_c_small_slice.webp" }) do
local fileExt = app.fs.fileExtension(fn)
if compatible_modes(fileExt, cm) then
for _,scale in ipairs({ 0.25, 0.5, 1, 2, 3, 4 }) do
print(fn, scale, cm)
app.sprite = spr
app.command.SaveFileCopyAs{ filename=fn, slice="small_slice", scale=scale }
local c = app.open(fn)
assert(c.width == math.floor(slice.bounds.width*scale))
assert(c.height == math.floor(slice.bounds.height*scale))
local testImg = Image(spr.cels[1].image, spr.slices[1].bounds)
fix_images(testImg, scale, fileExt, c, cm, c1)
if not c.cels[1].image:isEqual(testImg) then
c.cels[1].image:saveAs("_testA.png")
testImg:saveAs("_testB.png")
end
assert(c.cels[1].image:isEqual(testImg))
end
end
end
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end