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local core = require "core"
local command = require "core.command"
local common = require "core.common"
local config = require "core.config"
local View = require "core.view"
local style = require "core.style"
local BORDER_WIDTH = common.round(1 * SCALE)
local UNDERLINE_WIDTH = common.round(2 * SCALE)
local UNDERLINE_MARGIN = common.round(1 * SCALE)
local noop = function() end
local NagView = View:extend()
function NagView:new()
NagView.super.new(self)
self.size.y = 0
self.force_focus = false
self.queue = {}
end
function NagView:get_title()
return self.title
end
-- The two methods below are duplicated from DocView
function NagView:get_line_height()
return math.floor(style.font:get_height() * config.line_height)
end
function NagView:get_line_text_y_offset()
local lh = self:get_line_height()
local th = style.font:get_height()
return (lh - th) / 2
end
-- Buttons height without padding
function NagView:get_buttons_height()
local lh = style.font:get_height()
local bt_padding = lh / 2
return lh + 2 * BORDER_WIDTH + 2 * bt_padding
end
function NagView:get_target_height()
return self.target_height + 2 * style.padding.y
end
function NagView:update()
NagView.super.update(self)
if core.active_view == self and self.title then
self:move_towards(self.size, "y", self:get_target_height())
self:move_towards(self, "underline_progress", 1)
else
self:move_towards(self.size, "y", 0)
end
end
function NagView:draw_overlay()
local ox, oy = self:get_content_offset()
oy = oy + self.size.y
local w, h = core.root_view.size.x, core.root_view.size.y - oy
core.root_view:defer_draw(function()
renderer.draw_rect(ox, oy, w, h, style.nagbar_dim)
end)
end
function NagView:change_hovered(i)
if i ~= self.hovered_item then
self.hovered_item = i
self.underline_progress = 0
core.redraw = true
end
end
function NagView:each_option()
return coroutine.wrap(function()
if not self.options then return end
local opt, bw,bh,ox,oy
bh = self:get_buttons_height()
ox,oy = self:get_content_offset()
ox = ox + self.size.x
oy = oy + self.size.y - bh - style.padding.y
for i = #self.options, 1, -1 do
opt = self.options[i]
bw = opt.font:get_width(opt.text) + 2 * BORDER_WIDTH + style.padding.x
ox = ox - bw - style.padding.x
coroutine.yield(i, opt, ox,oy,bw,bh)
end
end)
end
function NagView:on_mouse_moved(mx, my, ...)
NagView.super.on_mouse_moved(self, mx, my, ...)
for i, _, x,y,w,h in self:each_option() do
if mx >= x and my >= y and mx < x + w and my < y + h then
self:change_hovered(i)
break
end
end
end
function NagView:on_mouse_pressed(button, mx, my, clicks)
if NagView.super.on_mouse_pressed(self, button, mx, my, clicks) then return end
for i, _, x,y,w,h in self:each_option() do
if mx >= x and my >= y and mx < x + w and my < y + h then
self:change_hovered(i)
command.perform "dialog:select"
break
end
end
end
function NagView:on_text_input(text)
if text:lower() == "y" then
command.perform "dialog:select-yes"
elseif text:lower() == "n" then
command.perform "dialog:select-no"
end
end
function NagView:draw()
if self.size.y <= 0 or not self.title then return end
self:draw_overlay()
self:draw_background(style.nagbar)
local ox, oy = self:get_content_offset()
ox = ox + style.padding.x
-- if there are other items, show it
if #self.queue > 0 then
local str = string.format("[%d]", #self.queue)
ox = common.draw_text(style.font, style.nagbar_text, str, "left", ox, oy, self.size.x, self.size.y)
ox = ox + style.padding.x
end
-- draw message
local lh = style.font:get_height() * config.line_height
oy = oy + style.padding.y + (self.target_height - self:get_message_height()) / 2
for msg_line in self.message:gmatch("(.-)\n") do
local ty = oy + self:get_line_text_y_offset()
renderer.draw_text(style.font, msg_line, ox, ty, style.nagbar_text)
oy = oy + lh
end
-- draw buttons
for i, opt, bx,by,bw,bh in self:each_option() do
local fw,fh = bw - 2 * BORDER_WIDTH, bh - 2 * BORDER_WIDTH
local fx,fy = bx + BORDER_WIDTH, by + BORDER_WIDTH
-- draw the button
renderer.draw_rect(bx,by,bw,bh, style.nagbar_text)
renderer.draw_rect(fx,fy,fw,fh, style.nagbar)
if i == self.hovered_item then -- draw underline
local uw = fw - 2 * UNDERLINE_MARGIN
local halfuw = uw / 2
local lx = fx + UNDERLINE_MARGIN + halfuw - (halfuw * self.underline_progress)
local ly = fy + fh - UNDERLINE_MARGIN - UNDERLINE_WIDTH
uw = uw * self.underline_progress
renderer.draw_rect(lx,ly,uw,UNDERLINE_WIDTH, style.nagbar_text)
end
common.draw_text(opt.font, style.nagbar_text, opt.text, "center", fx,fy,fw,fh)
end
end
function NagView:get_message_height()
local h = 0
for str in string.gmatch(self.message, "(.-)\n") do
h = h + style.font:get_height() * config.line_height
end
return h
end
function NagView:next()
local opts = table.remove(self.queue, 1) or {}
self.title = opts.title
self.message = opts.message and opts.message .. "\n"
self.options = opts.options
self.on_selected = opts.on_selected
if self.message and self.options then
local message_height = self:get_message_height()
-- self.target_height is the nagview height needed to display the message and
-- the buttons, excluding the top and bottom padding space.
self.target_height = math.max(message_height, self:get_buttons_height())
self:change_hovered(common.find_index(self.options, "default_yes"))
end
self.force_focus = self.message ~= nil
core.set_active_view(self.message ~= nil and self or
core.next_active_view or core.last_active_view)
end
function NagView:show(title, message, options, on_select)
local opts = {}
opts.title = assert(title, "No title")
opts.message = assert(message, "No message")
opts.options = assert(options, "No options")
opts.on_selected = on_select or noop
table.insert(self.queue, opts)
if #self.queue > 0 and not self.title then self:next() end
end
return NagView
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