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-- mod-version:3
local config = require "core.config"
local common = require "core.common"
local DocView = require "core.docview"
config.plugins.colorpreview = common.merge({
enabled = true,
-- The config specification used by the settings gui
config_spec = {
name = "Color Preview",
{
label = "Enable",
description = "Enable or disable the color preview feature.",
path = "enabled",
type = "toggle",
default = true
}
}
}, config.plugins.colorpreview)
local white = { common.color "#ffffff" }
local black = { common.color "#000000" }
local tmp = {}
local function draw_color_previews(self, line, x, y, ptn, base, nibbles)
local text = self.doc.lines[line]
local s, e = 0, 0
while true do
s, e = text:find(ptn, e + 1)
if not s then break end
local str = text:sub(s, e)
local r, g, b, a = str:match(ptn)
r, g, b = tonumber(r, base), tonumber(g, base), tonumber(b, base)
a = tonumber(a or "", base)
if a ~= nil then
if base ~= 16 then
a = a * 0xff
end
else
a = 0xff
end
-- #123 becomes #112233
if nibbles then
r = r * 16
g = g * 16
b = b * 16
end
local x1 = x + self:get_col_x_offset(line, s)
local x2 = x + self:get_col_x_offset(line, e + 1)
local oy = self:get_line_text_y_offset()
local text_color = math.max(r, g, b) < 128 and white or black
tmp[1], tmp[2], tmp[3], tmp[4] = r, g, b, a
local l1, _, l2, _ = self.doc:get_selection(true)
if not (self.doc:has_selection() and line >= l1 and line <= l2) then
renderer.draw_rect(x1, y, x2 - x1, self:get_line_height(), tmp)
renderer.draw_text(self:get_font(), str, x1, y + oy, text_color)
end
end
end
local draw_line_text = DocView.draw_line_text
function DocView:draw_line_text(line, x, y)
local lh = draw_line_text(self, line, x, y)
if config.plugins.colorpreview.enabled then
draw_color_previews(self, line, x, y,
"#(%x%x)(%x%x)(%x%x)(%x?%x?)%f[%W]",
16
)
-- support #fff css format
draw_color_previews(self, line, x, y, "#(%x)(%x)(%x)%f[%W]", 16, true)
draw_color_previews(self, line, x, y,
"rgba?%((%d+)%D+(%d+)%D+(%d+)[%s,]-([%.%d]-)%s-%)",
nil
)
end
return lh
end
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