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require "test-setup"
require "lunit"
local Cairo = require "oocairo"
module("test.path", lunit.testcase, package.seeall)
function setup ()
surface = Cairo.image_surface_create("rgb24", 23, 45)
cr = Cairo.context_create(surface)
end
function teardown ()
assert_equal(nil, cr:status(), "Error status on context")
assert_equal(nil, surface:status(), "Error status on surface")
surface = nil
cr = nil
end
function test_double_gc ()
local path = cr:copy_path()
path:__gc()
path:__gc()
end
function test_current_point ()
assert_false(cr:has_current_point())
local x, y = cr:get_current_point()
assert_nil(x)
assert_nil(y)
cr:move_to(1.5, 3.25)
assert_true(cr:has_current_point())
x, y = cr:get_current_point()
assert_equal(1.5, x)
assert_equal(3.25, y)
end
function test_path_extents ()
local x1, y1, x2, y2 = cr:path_extents()
assert_equal(0, x1)
assert_equal(0, y1)
assert_equal(0, x2)
assert_equal(0, y2)
cr:move_to(1.5, 3.25)
cr:line_to(4, 7)
x1, y1, x2, y2 = cr:path_extents()
assert_equal(1.5, x1)
assert_equal(3.25, y1)
assert_equal(4, x2)
assert_equal(7, y2)
end
function test_clipping ()
local x1, y1, x2, y2 = cr:clip_extents()
-- Wrapper functions to make this work with older cairo versions
local function in_clip(cr, x, y, expected)
if cr.in_clip then
return cr:in_clip(3, 4)
end
return expected
end
assert_equal(0, x1)
assert_equal(0, y1)
assert_equal(23, x2)
assert_equal(45, y2)
cr:move_to(1.5, 3.25)
cr:line_to(4, 7)
cr:line_to(8, 5)
cr:close_path()
cr:clip_preserve()
assert_true(cr:has_current_point())
assert_true(in_clip(cr, 3, 4, true))
cr:new_sub_path()
cr:rectangle(2, 3, 2, 2)
cr:clip()
assert_false(cr:has_current_point())
assert_false(in_clip(cr, 3, 4, false))
x1, y1, x2, y2 = cr:clip_extents()
assert_equal(1, x1)
assert_equal(3, y1)
assert_equal(8, x2)
assert_equal(7, y2)
cr:reset_clip()
assert_true(in_clip(cr, 3, 4, true))
x1, y1, x2, y2 = cr:clip_extents()
assert_equal(0, x1)
assert_equal(0, y1)
assert_equal(23, x2)
assert_equal(45, y2)
end
function test_fill_extents ()
cr:rectangle(5, 6, 11, 12)
local x1, y1, x2, y2 = cr:fill_extents()
assert_equal(5, x1)
assert_equal(6, y1)
assert_equal(16, x2)
assert_equal(18, y2)
end
function test_stroke_extents ()
cr:move_to(5, 9)
cr:line_to(17, 9)
cr:set_line_width(5)
local x1, y1, x2, y2 = cr:stroke_extents()
assert_equal(5, x1)
assert_equal(6.5, y1)
assert_equal(17, x2)
assert_equal(11.5, y2)
end
local function check_path_iter (cmd, pt, expcmd, ...)
assert_string(cmd)
assert_equal(expcmd, cmd)
local numexpargs = select("#", ...)
if numexpargs == 0 then
assert_nil(pt)
else
assert_equal(numexpargs, #pt)
for i = 1, numexpargs do
assert_equal(select(i, ...), pt[i], cmd .. " arg " .. i)
end
end
end
function test_each ()
cr:move_to(1, 2)
cr:line_to(3, 4)
cr:curve_to(5, 6, 7, 8, 9, 10)
cr:close_path()
cr:move_to(11, 12)
cr:rel_line_to(5, 6)
cr:rel_move_to(7, 8)
cr:rel_curve_to(1, 2, 3, 4, 5, 6)
local path = cr:copy_path()
assert_userdata(path)
assert_equal("cairo path object", path._NAME)
local iter, s, i = path:each()
local cmd, pt
i, cmd, pt = iter(s, i)
check_path_iter(cmd, pt, "move-to", 1, 2)
i, cmd, pt = iter(s, i)
check_path_iter(cmd, pt, "line-to", 3, 4)
i, cmd, pt = iter(s, i)
check_path_iter(cmd, pt, "curve-to", 5, 6, 7, 8, 9, 10)
i, cmd, pt = iter(s, i)
check_path_iter(cmd, pt, "close-path")
i, cmd, pt = iter(s, i)
check_path_iter(cmd, pt, "move-to", 11, 12)
i, cmd, pt = iter(s, i)
check_path_iter(cmd, pt, "line-to", 16, 18)
i, cmd, pt = iter(s, i)
check_path_iter(cmd, pt, "move-to", 23, 26)
i, cmd, pt = iter(s, i)
check_path_iter(cmd, pt, "curve-to", 24, 28, 26, 30, 28, 32)
i, cmd, pt = iter(s, i)
assert_nil(i); assert_nil(cmd); assert_nil(pt)
end
function test_copy_path_flat ()
cr:move_to(1, 2)
cr:curve_to(5, 6, 7, 8, 9, 10)
local path = cr:copy_path_flat()
assert_userdata(path)
assert_equal("cairo path object", path._NAME)
for _, cmd in path:each() do
assert(cmd ~= "curve-to")
end
end
function test_append_path ()
cr:line_to(11, 12)
cr:line_to(13, 14)
local path = cr:copy_path()
cr:new_path()
cr:move_to(1, 2)
cr:line_to(3, 4)
cr:append_path(path)
path = cr:copy_path()
local iter, s, i = path:each()
local cmd, pt
i, cmd, pt = iter(s, i)
check_path_iter(cmd, pt, "move-to", 1, 2)
i, cmd, pt = iter(s, i)
check_path_iter(cmd, pt, "line-to", 3, 4)
i, cmd, pt = iter(s, i)
check_path_iter(cmd, pt, "move-to", 11, 12)
i, cmd, pt = iter(s, i)
check_path_iter(cmd, pt, "line-to", 13, 14)
i = iter(s, i)
assert_nil(i)
end
-- vi:ts=4 sw=4 expandtab
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