mirror of https://github.com/koreader/koreader
You cannot select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
99 lines
2.6 KiB
Lua
99 lines
2.6 KiB
Lua
require "rendertext"
|
|
require "keys"
|
|
require "graphics"
|
|
require "font"
|
|
require "inputbox"
|
|
require "selectmenu"
|
|
require "commands"
|
|
|
|
HelpPage = {
|
|
-- Class vars:
|
|
-- font for displaying keys
|
|
fsize = 20,
|
|
face = freetype.newBuiltinFace("mono", 20),
|
|
fhash = "mono20",
|
|
|
|
-- font for displaying help messages
|
|
hfsize = 20,
|
|
hface = freetype.newBuiltinFace("sans", 20),
|
|
hfhash = "sans20",
|
|
|
|
-- font for paging display
|
|
ffsize = 15,
|
|
fface = freetype.newBuiltinFace("sans", 15),
|
|
ffhash = "sans15",
|
|
|
|
-- spacing between lines
|
|
spacing = 25,
|
|
|
|
-- state buffer
|
|
commands = nil,
|
|
items = 0,
|
|
page = 1
|
|
}
|
|
|
|
function HelpPage:show(ypos, height,commands)
|
|
self.commands = {}
|
|
self.items = 0
|
|
local keys = {}
|
|
for k,v in pairs(commands.map) do
|
|
local key = v.keygroup or v.keydef:display()
|
|
--print("order: "..v.order.." command: "..tostring(v.keydef).." - keygroup:"..(v.keygroup or "nil").." -keys[key]:"..(keys[key] or "nil"))
|
|
if keys[key] == nil then
|
|
keys[key] = 1
|
|
table.insert(self.commands,{shortcut=key,help=v.help,order=v.order})
|
|
self.items = self.items + 1
|
|
end
|
|
end
|
|
table.sort(self.commands,function(w1,w2) return w1.order<w2.order end)
|
|
local perpage = math.floor( (height - 1 * (self.ffsize + 5)) / self.spacing )
|
|
local pagedirty = true
|
|
|
|
while true do
|
|
if pagedirty then
|
|
fb.bb:paintRect(0, ypos, fb.bb:getWidth(), height, 0)
|
|
local c
|
|
local max_x = 0
|
|
for c = 1, perpage do
|
|
local i = (self.page - 1) * perpage + c
|
|
if i <= self.items then
|
|
local pen_x = renderUtf8Text(fb.bb, 5, ypos + self.spacing*c, self.face, self.fhash, self.commands[i].shortcut, true)
|
|
max_x = math.max(max_x, pen_x)
|
|
end
|
|
end
|
|
for c = 1, perpage do
|
|
local i = (self.page - 1) * perpage + c
|
|
if i <= self.items then
|
|
renderUtf8Text(fb.bb, max_x + 20, ypos + self.spacing*c, self.hface, self.hfhash, self.commands[i].help, true)
|
|
end
|
|
end
|
|
renderUtf8Text(fb.bb, 5, height - self.ffsize, self.fface, self.ffhash,
|
|
"Page "..self.page.." of "..math.ceil(self.items / perpage), true)
|
|
markerdirty = true
|
|
end
|
|
if pagedirty then
|
|
fb:refresh(0, 0, ypos, fb.bb:getWidth(), height)
|
|
pagedirty = false
|
|
end
|
|
|
|
local ev = input.waitForEvent()
|
|
--print("key code:"..ev.code)
|
|
ev.code = adjustKeyEvents(ev)
|
|
if ev.type == EV_KEY and ev.value == EVENT_VALUE_KEY_PRESS then
|
|
if ev.code == KEY_PGFWD then
|
|
if self.page < (self.items / perpage) then
|
|
self.page = self.page + 1
|
|
pagedirty = true
|
|
end
|
|
elseif ev.code == KEY_PGBCK then
|
|
if self.page > 1 then
|
|
self.page = self.page - 1
|
|
pagedirty = true
|
|
end
|
|
elseif ev.code == KEY_BACK or ev.code == KEY_HOME then
|
|
return nil
|
|
end
|
|
end
|
|
end
|
|
end
|