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koreader/inputbox.lua

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6.7 KiB
Lua
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require "rendertext"
require "keys"
require "graphics"
InputBox = {
-- Class vars:
h = 100,
input_slot_w = nil,
input_start_x = 145,
input_start_y = nil,
input_cur_x = nil, -- points to the start of next input pos
input_bg = 0,
input_string = "",
shiftmode = false,
altmode = false,
cursor = nil,
-- font for displaying input content
-- we have to use mono here for better distance controlling
face = freetype.newBuiltinFace("mono", 25),
fhash = "m25",
fheight = 25,
fwidth = 15,
}
function InputBox:refreshText()
-- clear previous painted text
fb.bb:paintRect(140, self.input_start_y-19,
self.input_slot_w, self.fheight, self.input_bg)
-- paint new text
renderUtf8Text(fb.bb, self.input_start_x, self.input_start_y,
self.face, self.fhash,
self.input_string, 0)
end
function InputBox:addChar(char)
self.cursor:clear()
-- draw new text
local cur_index = (self.cursor.x_pos + 3 - self.input_start_x)
/ self.fwidth
self.input_string = self.input_string:sub(1,cur_index)..char..
self.input_string:sub(cur_index+1)
self:refreshText()
self.input_cur_x = self.input_cur_x + self.fwidth
-- draw new cursor
self.cursor:moveHorizontal(self.fwidth)
self.cursor:draw()
fb:refresh(1, self.input_start_x-5, self.input_start_y-25,
self.input_slot_w, self.h-25)
end
function InputBox:delChar()
if self.input_start_x == self.input_cur_x then
return
end
local cur_index = (self.cursor.x_pos + 3 - self.input_start_x)
/ self.fwidth
if cur_index == 0 then return end
self.cursor:clear()
-- draw new text
self.input_string = self.input_string:sub(0,cur_index-1)..
self.input_string:sub(cur_index+1, -1)
self:refreshText()
self.input_cur_x = self.input_cur_x - self.fwidth
-- draw new cursor
self.cursor:moveHorizontal(-self.fwidth)
self.cursor:draw()
fb:refresh(1, self.input_start_x-5, self.input_start_y-25,
self.input_slot_w, self.h-25)
end
function InputBox:clearText()
self.cursor:clear()
self.input_string = ""
self:refreshText()
self.cursor.x_pos = self.input_start_x - 3
self.cursor:draw()
fb:refresh(1, self.input_start_x-5, self.input_start_y-25,
self.input_slot_w, self.h-25)
end
function InputBox:drawBox(ypos, w, h, title)
-- draw input border
fb.bb:paintRect(20, ypos, w, h, 5)
-- draw input slot
fb.bb:paintRect(140, ypos + 10, w - 130, h - 20, self.input_bg)
-- draw input title
renderUtf8Text(fb.bb, 35, self.input_start_y, self.face, self.fhash,
title, true)
end
----------------------------------------------------------------------
-- InputBox:input()
--
-- @title: input prompt for the box
-- @d_text: default to nil (used to set default text in input slot)
----------------------------------------------------------------------
function InputBox:input(ypos, height, title, d_text)
-- do some initilization
self.h = height
self.input_start_y = ypos + 35
self.input_cur_x = self.input_start_x
self.input_slot_w = fb.bb:getWidth() - 170
self.cursor = Cursor:new {
x_pos = self.input_start_x - 3,
y_pos = ypos + 13,
h = 30,
}
-- draw box and content
w = fb.bb:getWidth() - 40
h = height - 45
self:drawBox(ypos, w, h, title)
if d_text then
self.input_string = d_text
self.input_cur_x = self.input_cur_x + (self.fwidth * d_text:len())
self.cursor.x_pos = self.cursor.x_pos + (self.fwidth * d_text:len())
self:refreshText()
end
self.cursor:draw()
fb:refresh(1, 20, ypos, w, h)
while true do
local ev = input.waitForEvent()
ev.code = adjustKeyEvents(ev)
if ev.type == EV_KEY and ev.value == EVENT_VALUE_KEY_PRESS then
--local secs, usecs = util.gettime()
if ev.code == KEY_FW_UP then
elseif ev.code == KEY_FW_DOWN then
elseif ev.code == KEY_A then
self:addChar("a")
elseif ev.code == KEY_B then
self:addChar("b")
elseif ev.code == KEY_C then
self:addChar("c")
elseif ev.code == KEY_D then
self:addChar("d")
elseif ev.code == KEY_E then
self:addChar("e")
elseif ev.code == KEY_F then
self:addChar("f")
elseif ev.code == KEY_G then
self:addChar("g")
elseif ev.code == KEY_H then
self:addChar("h")
elseif ev.code == KEY_I then
self:addChar("i")
elseif ev.code == KEY_J then
self:addChar("j")
elseif ev.code == KEY_K then
self:addChar("k")
elseif ev.code == KEY_L then
self:addChar("l")
elseif ev.code == KEY_M then
self:addChar("m")
elseif ev.code == KEY_N then
self:addChar("n")
elseif ev.code == KEY_O then
self:addChar("o")
elseif ev.code == KEY_P then
self:addChar("p")
elseif ev.code == KEY_Q then
self:addChar("q")
elseif ev.code == KEY_R then
self:addChar("r")
elseif ev.code == KEY_S then
self:addChar("s")
elseif ev.code == KEY_T then
self:addChar("t")
elseif ev.code == KEY_U then
self:addChar("u")
elseif ev.code == KEY_V then
self:addChar("v")
elseif ev.code == KEY_W then
self:addChar("w")
elseif ev.code == KEY_X then
self:addChar("x")
elseif ev.code == KEY_Y then
self:addChar("y")
elseif ev.code == KEY_Z then
self:addChar("z")
elseif ev.code == KEY_1 then
self:addChar("1")
elseif ev.code == KEY_2 then
self:addChar("2")
elseif ev.code == KEY_3 then
self:addChar("3")
elseif ev.code == KEY_4 then
self:addChar("4")
elseif ev.code == KEY_5 then
self:addChar("5")
elseif ev.code == KEY_6 then
self:addChar("6")
elseif ev.code == KEY_7 then
self:addChar("7")
elseif ev.code == KEY_8 then
self:addChar("8")
elseif ev.code == KEY_9 then
self:addChar("9")
elseif ev.code == KEY_0 then
self:addChar("0")
elseif ev.code == KEY_SPACE then
self:addChar(" ")
elseif ev.code == KEY_PGFWD then
elseif ev.code == KEY_PGBCK then
elseif ev.code == KEY_FW_LEFT then
if (self.cursor.x_pos + 3) > self.input_start_x then
self.cursor:moveHorizontalAndDraw(-self.fwidth)
fb:refresh(1, self.input_start_x-5, ypos,
self.input_slot_w, h)
end
elseif ev.code == KEY_FW_RIGHT then
if (self.cursor.x_pos + 3) < self.input_cur_x then
self.cursor:moveHorizontalAndDraw(self.fwidth)
fb:refresh(1,self.input_start_x-5, ypos,
self.input_slot_w, h)
end
elseif ev.code == KEY_ENTER or ev.code == KEY_FW_PRESS then
if self.input_string == "" then
self.input_string = nil
end
break
elseif ev.code == KEY_DEL then
if Keys.shiftmode then
self:clearText()
else
self:delChar()
end
elseif ev.code == KEY_BACK or ev.code == KEY_HOME then
self.input_string = nil
break
end
--local nsecs, nusecs = util.gettime()
--local dur = (nsecs - secs) * 1000000 + nusecs - usecs
--print("E: T="..ev.type.." V="..ev.value.." C="..ev.code.." DUR="..dur)
end -- if
end -- while
local return_str = self.input_string
self.input_string = ""
return return_str
end
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