a lot of inputbox improvements

closes #194, closes #218

1. Lowercase layout is default
2. Uppercase chars by pressing Shift+Key; it will probably require us to
   remap some old MOD_SHIFT-commands to MOD_ALT (not the upper raw that is
   responsible for digits: Alt-Q = 1, etc.)
3. New 'documentation' functions
   - usual helppage with active hotkeys (Alt+H)
   - list of available math functions (Alt+M, active in the calculator
     mode)
4. Added two small functions to move cursor to the first/last position
   in inputbox (Shift+FW-left/FW-right)
5. Some minor rearrangement for layouts (mostly for convenient work with
   calculator)
6. Keeping initial "d_text" in InputBox:input(... d_text, is_hint) when
   is_hint is not true (say, for minor changing of long filenames #219, etc.)
   or incremental search.

Added: calculator with a proper documentation of available math
functions
This commit is contained in:
NuPogodi
2012-08-28 22:40:26 +03:00
committed by Dobrica Pavlinusic
parent 3f410bdb6b
commit 63e1c4b66c

View File

@@ -6,7 +6,6 @@ require "graphics"
----------------------------------------------------
-- General inputbox
----------------------------------------------------
InputBox = {
-- Class vars:
h = 100,
@@ -25,9 +24,7 @@ InputBox = {
fheight = 25,
fwidth = 15,
commands = nil,
initialized = false,
-- NuPogodi, 25.05.12: for full UTF8 support
vk_bg = 3,
charlist = {}, -- table to store input string
charpos = 1,
@@ -35,12 +32,13 @@ InputBox = {
-- values to control layouts: min & max
min_layout = 2,
max_layout = 9,
-- default layout = 2, i.e. shiftmode = symbolmode = utf8mode = false
layout = 2,
layout = 3,
-- now bits to toggle the layout mode
shiftmode = true, -- toggle chars <> capitals, lowest bit in (layout-2)
symbolmode = false, -- toggle chars <> symbols, middle bit in (layout-2)
utf8mode = false, -- toggle english <> national, highest bit in (layout-2)
shiftmode = true, -- toggle chars <-> capitals, lowest bit in (layout-2)
symbolmode = false, -- toggle chars <-> symbols, middle bit in (layout-2)
utf8mode = false, -- toggle english <-> national, highest bit in (layout-2)
calcmode = false, -- toggle calculator mode
calcfunctions = nil, -- math functions for calculator helppage
}
function InputBox:new(o)
@@ -127,8 +125,13 @@ end
----------------------------------------------------------------------
function InputBox:input(ypos, height, title, d_text, is_hint)
-- To avoid confusion with old ypos & height parameters, I'd better define
-- my own position, at the bottom screen edge (NuPogodi, 26.05.12)
-- my own position, at the bottom screen edge
ypos = fb.bb:getHeight() - 165
-- some corrections for calculator mode
if self.calcmode then
self:setCalcMode()
end
-- at first, draw titled box and content
local h, w = 55, fb.bb:getWidth() - 2
self:drawBox(ypos, w, h, title)
@@ -142,21 +145,16 @@ function InputBox:input(ypos, height, title, d_text, is_hint)
y_pos = ypos + 13,
h = 30,
}
if d_text then
if is_hint then
-- print hint text
-- print hint text
fb.bb:paintRect(self.input_start_x-5, self.input_start_y-19, self.input_slot_w, self.fheight, self.input_bg)
renderUtf8Text(fb.bb, self.input_start_x+5, self.input_start_y, self.face, d_text, 0)
fb.bb:dimRect(self.input_start_x-5, self.input_start_y-19, self.input_slot_w, self.fheight, self.input_bg)
else
self.input_string = d_text
string.gsub( d_text, "(.)", function(char)
table.insert(self.charlist, self.charpos, char)
self.charpos = self.charpos + 1
return ""
end)
Debug("charlist", self.charlist)
-- add text to input_string
self:StringToCharlist(d_text)
self.input_cur_x = self.input_cur_x + (self.fwidth * #self.charlist)
self.cursor.x_pos = self.cursor.x_pos + (self.fwidth * #self.charlist)
self:refreshText()
@@ -164,8 +162,10 @@ function InputBox:input(ypos, height, title, d_text, is_hint)
end
self.cursor:draw()
fb:refresh(1, 1, ypos, w, h)
local ev, keydef, command, ret_code
while true do
local ev = input.saveWaitForEvent()
ev = input.saveWaitForEvent()
ev.code = adjustKeyEvents(ev)
if ev.type == EV_KEY and ev.value ~= EVENT_VALUE_KEY_RELEASE then
keydef = Keydef:new(ev.code, getKeyModifier())
@@ -183,62 +183,63 @@ function InputBox:input(ypos, height, title, d_text, is_hint)
end
end -- if
end -- while
local return_str = self.input_string
local output = self.input_string
self.input_string = ""
self.charlist = {}
self.charpos = 1
return return_str
return output
end
function InputBox:setLayoutsTable()
-- trying to read the layout from the user-defined file "mykeyboard.lua"
local ok, stored = pcall(dofile,"./mykeyboard.lua")
-- trying to read the layout from the user-defined file
local ok, stored = pcall(dofile, lfs.currentdir() .. "/mykeyboard.lua")
if ok then
self.INPUT_KEYS = stored
else -- if an error happens, we use the default layout
self.INPUT_KEYS = {
{ KEY_Q, "Q", "q", "1", "!", "Я", "я", "1", "!", },
{ KEY_W, "W", "w", "2", "?", "Ж", "ж", "2", "?", },
{ KEY_E, "E", "e", "3", "#", "Е", "е", "3", "«", },
{ KEY_R, "R", "r", "4", "@", "Р", "р", "4", "»", },
{ KEY_T, "T", "t", "5", "%", "Т", "т", "5", ":", },
{ KEY_E, "E", "e", "3", "|", "Е", "е", "3", "«", },
{ KEY_R, "R", "r", "4", "#", "Р", "р", "4", "»", },
{ KEY_T, "T", "t", "5", "@", "Т", "т", "5", ":", },
{ KEY_Y, "Y", "y", "6", "", "Ы", "ы", "6", ";", },
{ KEY_U, "U", "u", "7", "\'", "У", "у", "7", "~", },
{ KEY_U, "U", "u", "7", "'", "У", "у", "7", "~", },
{ KEY_I, "I", "i", "8", "`", "И", "и", "8", "(",},
{ KEY_O, "O", "o", "9", ":", "О", "о", "9", ")",},
{ KEY_P, "P", "p", "0", ";", "П", "п", "0", "=", },
-- middle raw
{ KEY_A, "A", "a", "+", "", "А", "а", "Ш", "ш", },
{ KEY_S, "S", "s", "-", "_", "С", "с", "Ѕ", "ѕ", },
{ KEY_D, "D", "d", "*", "¦", "Д", "д", "Э", "э", },
{ KEY_F, "F", "f", "/", "|", "Ф", "ф", "Ю", "ю", },
{ KEY_G, "G", "g", "\\", "", "Г", "г", "Ґ", "ґ", },
{ KEY_H, "H", "h", "=", "", "Ч", "ч", "Ј", "ј", },
{ KEY_D, "D", "d", "*", "=", "Д", "д", "Э", "э", },
{ KEY_F, "F", "f", "/", "\\", "Ф", "ф", "Ю", "ю", },
{ KEY_G, "G", "g", "%", "", "Г", "г", "Ґ", "ґ", },
{ KEY_H, "H", "h", "^", "", "Ч", "ч", "Ј", "ј", },
{ KEY_J, "J", "j", "<", "", "Й", "й", "І", "і", },
{ KEY_K, "K", "k", "ˆ", "\"", "К", "к", "Ќ", "ќ", },
{ KEY_K, "K", "k", "=", "\"", "К", "к", "Ќ", "ќ", },
{ KEY_L, "L", "l", ">", "~", "Л", "л", "Љ", "љ", },
-- lowest raw
{ KEY_Z, "Z", "z", "(", "$", "З", "з", "Щ", "щ", },
{ KEY_X, "X", "x", ")", "", "Х", "х", "", "@", },
{ KEY_C, "C", "c", "{", "¥", "Ц", "ц", "Џ", "џ", },
{ KEY_V, "V", "v", "}", "£", "В", "в", "Ў", "ў", },
{ KEY_B, "B", "b", "[", "", "Б", "б", "Ћ", "ћ", },
{ KEY_N, "N", "n", "]", "", "Н", "н", "Њ", "њ", },
{ KEY_M, "M", "m", "&", "", "М", "м", "Ї", "ї", },
{ KEY_DOT, ".", ",", ".", ",", ".", ",", "Є", "є", },
{ KEY_C, "C", "c", "&", "¥", "Ц", "ц", "Џ", "џ", },
{ KEY_V, "V", "v", ":", "£", "В", "в", "Ў", "ў", },
{ KEY_B, "B", "b", "π", "", "Б", "б", "Ћ", "ћ", },
{ KEY_N, "N", "n", "е", "", "Н", "н", "Њ", "њ", },
{ KEY_M, "M", "m", "~", "", "М", "м", "Ї", "ї", },
{ KEY_DOT, ",", ".", ".", ",", ",", ".", "Є", "є", },
-- Let us make key 'Space' the same for all layouts
{ KEY_SPACE," ", " ", " ", " ", " ", " ", " ", " ", },
-- Simultaneous pressing Alt + Q..P should also work properly
{ KEY_1, "1", " ", " ", " ", "1", " ", " ", " ", },
{ KEY_2, "2", " ", " ", " ", "2", " ", " ", " ", },
{ KEY_3, "3", " ", " ", " ", "3", " ", " ", " ", },
{ KEY_4, "4", " ", " ", " ", "4", " ", " ", " ", },
{ KEY_5, "5", " ", " ", " ", "5", " ", " ", " ", },
{ KEY_6, "6", " ", " ", " ", "6", " ", " ", " ", },
{ KEY_7, "7", " ", " ", " ", "7", " ", " ", " ", },
{ KEY_8, "8", " ", " ", " ", "8", " ", " ", " ", },
{ KEY_9, "9", " ", " ", " ", "9", " ", " ", " ", },
{ KEY_0, "0", " ", " ", " ", "0", " ", " ", " ", },
-- Simultaneous pressing Alt + Q..P should also work properly everywhere
{ KEY_1, "1", "1", "1", "1", "1", "1", "1", "1", },
{ KEY_2, "2", "2", "2", "2", "2", "2", "2", "2", },
{ KEY_3, "3", "3", "3", "3", "3", "3", "3", "3", },
{ KEY_4, "4", "4", "4", "4", "4", "4", "4", "4", },
{ KEY_5, "5", "5", "5", "5", "5", "5", "5", "5", },
{ KEY_6, "6", "6", "6", "6", "6", "6", "6", "6", },
{ KEY_7, "7", "7", "7", "7", "7", "7", "7", "7", },
{ KEY_8, "8", "8", "8", "8", "8", "8", "8", "8", },
{ KEY_9, "9", "9", "9", "9", "9", "9", "9", "9", },
{ KEY_0, "0", "0", "0", "0", "0", "0", "0", "0", },
-- DXG keys
{ KEY_SLASH,"/", "\\", "/", "\\", "/", "\\", "/", "\\", },
}
@@ -281,13 +282,13 @@ function InputBox:DrawVirtualKeyboard()
blitbuffer.paintBorder(fb.bb, lx+9*dx-10, vy-dy-r-8, r, r, t, c, r)
renderUtf8Text(fb.bb, lx-5+9*dx, vy-dy-3, smfont, "Del", true)
-- Sym
blitbuffer.paintBorder(fb.bb, lx+8*dx-10, vy-r-8, r, r, t + (r-t)*number(self.symbolmode), c, r)
blitbuffer.paintBorder(fb.bb, lx+8*dx-10, vy-r-8, r, r, t + (r-t)*self:num(self.symbolmode), c, r)
renderUtf8Text(fb.bb, lx-5+8*dx, vy-3, smfont, "Sym", true)
-- Enter
blitbuffer.paintBorder(fb.bb, lx+9*dx-10, vy-r-8, r, r, t, c, r)
renderUtf8Text(fb.bb, lx+9*dx, vy-2, vkfont, "«", true)
-- Menu
blitbuffer.paintBorder(fb.bb, lx+10*dx-8, vy-2*dy-r-8, r+50, r, t+(r-t)*number(self.utf8mode), c, r)
blitbuffer.paintBorder(fb.bb, lx+10*dx-8, vy-2*dy-r-8, r+50, r, t+(r-t)*self:num(self.utf8mode), c, r)
renderUtf8Text(fb.bb, lx+10*dx+11, vy-2*dy-3, smfont, "Menu", true)
-- fiveway
local h=dy+2*r-2
@@ -296,6 +297,14 @@ function InputBox:DrawVirtualKeyboard()
fb:refresh(1, 1, fb.bb:getHeight()-120, fb.bb:getWidth()-2, 120)
end
function InputBox:num(bool)
return bool and 1 or 0
end
function InputBox:VKLayout(b1, b2, b3)
return 2 + self:num(b1) + 2 * self:num(b2) + 4 * self:num(b3)
end
function InputBox:addCharCommands(layout)
-- at first, let's define self.layout and extract separate bits as layout modes
if layout then
@@ -306,25 +315,48 @@ function InputBox:addCharCommands(layout)
-- fill the layout modes
layout = (layout - 2) % 4
self.shiftmode = (layout == 1 or layout == 3)
self.symbolmode = (layout == 2 or layout == 3)
self.symbolmode = (layout == 2 or layout == 4)
self.utf8mode = (self.layout > 5)
else -- or, without input parameter, restore layout from current layout modes
self.layout = 2 + number(self.shiftmode) + 2 * number(self.symbolmode) + 4 * number(self.utf8mode)
self.layout = self:VKLayout(self.shiftmode, self.symbolmode, self.utf8mode)
end
-- let's define layout called by Shift+Key (to type capitalized chars being in low-case layout)
local shift_layout = self:VKLayout(not self.shiftmode, self.symbolmode, self.utf8mode)
-- adding the commands
for k,v in ipairs(self.INPUT_KEYS) do
-- seems to work without removing old commands,
self.commands:del(v[1], nil, "")
-- just redefining existing ones
self.commands:add(v[1], nil, "", "input "..v[self.layout],
-- just redefining existing
self.commands:add(v[1], nil, "A..Z", "enter character from virtual keyboard (VK)",
function(self)
self:addChar(v[self.layout])
end
)
-- and commands for chars pressed with Shift
self.commands:add(v[1], MOD_SHIFT, "A..Z", "enter capitalized VK-character",
function(self)
self:addChar(v[shift_layout])
end
)
end
self:DrawVirtualKeyboard()
end
function InputBox:StringToCharlist(text)
if text == nill then return end
-- clear
self.charlist = {}
self.charpos = 1
local prevcharcode, charcode = 0
for uchar in string.gfind(text, "([%z\1-\127\194-\244][\128-\191]*)") do
charcode = util.utf8charcode(uchar)
if prevcharcode then -- utf8
self.charlist[#self.charlist+1] = uchar
end
prevcharcode = charcode
end
self.input_string = self:CharlistToString()
self.charpos = #self.charlist+1
end
function InputBox:CharlistToString()
local s, i = ""
for i=1, #self.charlist do
@@ -333,22 +365,25 @@ function InputBox:CharlistToString()
return s
end
function number(bool)
return bool and 1 or 0
end
function InputBox:addAllCommands()
-- we only initialize once
-- if already initialized, we (re)define only calcmode-dependent commands
if self.commands then
self:ModeDependentCommands()
self:DrawVirtualKeyboard()
return
end
self:setLayoutsTable()
self.commands = Commands:new{}
-- adding command to enter character commands
self:addCharCommands()
-- adding character commands
self:addCharCommands(self.layout)
-- adding the rest commands (independent of the selected layout)
self.commands:add(KEY_FW_LEFT, nil, "",
self.commands:add(KEY_H, MOD_ALT, "H",
"show helppage",
function(self)
self:showHelpPage(self.commands)
end
)
self.commands:add(KEY_FW_LEFT, nil, "joypad left",
"move cursor left",
function(self)
if (self.cursor.x_pos + 3) > self.input_start_x then
@@ -358,7 +393,17 @@ function InputBox:addAllCommands()
end
end
)
self.commands:add(KEY_FW_RIGHT, nil, "",
self.commands:add(KEY_FW_LEFT, MOD_SHIFT, "left",
"move cursor to the first position",
function(self)
if (self.cursor.x_pos + 3) > self.input_start_x then
self.cursor:moveHorizontalAndDraw(-self.fwidth*(self.charpos-1))
self.charpos = 1
fb:refresh(1, self.input_start_x-5, self.ypos, self.input_slot_w, self.h)
end
end
)
self.commands:add(KEY_FW_RIGHT, nil, "joypad right",
"move cursor right",
function(self)
if (self.cursor.x_pos + 3) < self.input_cur_x then
@@ -368,75 +413,235 @@ function InputBox:addAllCommands()
end
end
)
self.commands:add({KEY_ENTER, KEY_FW_PRESS}, nil, "",
"submit input content",
self.commands:add(KEY_FW_RIGHT, MOD_SHIFT, "right",
"move cursor to the last position",
function(self)
if self.input_string == "" then
self.input_string = nil
if (self.cursor.x_pos + 3) < self.input_cur_x then
self.cursor:moveHorizontalAndDraw(self.fwidth*(#self.charlist+1-self.charpos))
self.charpos = #self.charlist + 1
fb:refresh(1, self.input_start_x-5, self.ypos, self.input_slot_w, self.h)
end
return "break"
end
)
self.commands:add(KEY_DEL, nil, "",
self.commands:add(KEY_DEL, nil, "Del",
"delete one character",
function(self)
self:delChar()
end
)
self.commands:add(KEY_DEL, MOD_SHIFT, "",
"empty inputbox",
self.commands:add(KEY_DEL, MOD_SHIFT, "Del",
"delete all characters (empty inputbox)",
function(self)
self:clearText()
end
)
self.commands:add({KEY_BACK, KEY_HOME}, nil, "",
"cancel inputbox",
self.commands:addGroup("up/down", { Keydef:new(KEY_FW_DOWN, nil), Keydef:new(KEY_FW_UP, nil) },
"goto previous/next VK-layout",
function(self)
self.input_string = nil
return "break"
end
)
self.commands:add(KEY_P, MOD_SHIFT, "P",
"make screenshot",
function(self)
Screen:screenshot()
end
)
self.commands:add(KEY_FW_DOWN, nil, "joypad down",
"goto next keyboard layout",
function(self)
if self.layout == self.max_layout then self:addCharCommands(self.min_layout)
else self:addCharCommands(self.layout+1) end
end
)
self.commands:add(KEY_FW_UP, nil, "joypad up",
"goto previous keyboard layout",
function(self)
if self.layout == self.min_layout then self:addCharCommands(self.max_layout)
else self:addCharCommands(self.layout-1) end
if keydef.keycode == KEY_FW_DOWN then
if self.layout == self.max_layout then self:addCharCommands(self.min_layout)
else self:addCharCommands(self.layout+1) end
else -- KEY_FW_UP
if self.layout == self.min_layout then self:addCharCommands(self.max_layout)
else self:addCharCommands(self.layout-1) end
end
end
)
self.commands:add(KEY_AA, nil, "Aa",
"toggle layout: chars <> CHARS",
"toggle VK-layout: chars <> CHARS",
function(self)
self.shiftmode = not self.shiftmode
self:addCharCommands()
end
)
self.commands:add(KEY_SYM, nil, "Sym",
"toggle layout: chars <> symbols",
"toggle VK-layout: chars <> symbols",
function(self)
self.symbolmode = not self.symbolmode
self:addCharCommands()
end
)
self.commands:add(KEY_MENU, nil, "Menu",
"toggle layout: english <> national",
"toggle VK-layout: english <> national",
function(self)
self.utf8mode = not self.utf8mode
self:addCharCommands()
end
)
-- NuPogodi, 02.06.12: calcmode-dependent commands are collected
self:ModeDependentCommands() -- here
self.commands:add({KEY_BACK, KEY_HOME}, nil, "Back",
"back",
function(self)
self.input_string = nil
return "break"
end
)
end
-----------------------------------------------------------------
-- NuPogodi, 02.06.12: Some Help- & Calculator-related functions
-----------------------------------------------------------------
function InputBox:defineCalcFunctions() -- for the calculator documentation
-- to initialize only once
if self.calcfunctions then return end
self.calcfunctions = Commands:new{}
-- remove initially added commands
self.calcfunctions:del(KEY_INTO_SCREEN_SAVER, nil, "Slider")
self.calcfunctions:del(KEY_OUTOF_SCREEN_SAVER, nil, "Slider")
self.calcfunctions:del(KEY_CHARGING, nil, "plugin/out usb")
self.calcfunctions:del(KEY_NOT_CHARGING, nil, "plugin/out usb")
self.calcfunctions:del(KEY_SPACE, MOD_ALT, "Space")
local s = " " -- space for function groups
local a = 100 -- arithmetic functions
self.calcfunctions:add(a-1, nil, s:rep(1), string.upper("Ariphmetic operators"))
self.calcfunctions:add(a, nil, "+ -", "addition: 1+2=3; substraction: 3-2=1")
self.calcfunctions:add(a+1, nil, "* /", "multiplication: 2*2=4; division: 4/2=2")
self.calcfunctions:add(a+3, nil, "%", "modulo (remainder): 5.2%2=1.2, π-π%0.01=3.14")
local r = 200 -- relations
self.calcfunctions:add(r-1, nil, s:rep(2), string.upper("Relational operators"))
self.calcfunctions:add(r, nil, "< >", "less: (2<3)=true; more: (2>3)=false")
self.calcfunctions:add(r+1, nil, "<=", "less or equal: (3≤3)=true, (2≤1)=false")
self.calcfunctions:add(r+2, nil, ">=", "more or equal: (3≥3)=true, (1≥2)=false")
self.calcfunctions:add(r+3, nil, "==", "equal: (3==3)=true, (1==2)=false")
self.calcfunctions:add(r+4, nil, "~=", "not equal: (6~=8)=true, (3~=3)=false")
local l = 300 -- logical
self.calcfunctions:add(l-1, nil, s:rep(3), string.upper("Logical operators"))
self.calcfunctions:add(l+0, nil, "and, &", "= logical 'and': (4 and 5)=5, (nil & 5)=nil")
self.calcfunctions:add(l+1, nil, "or, |", "= logical 'or': (4 or 5)=4, (false | 5)=5")
local c = 400 -- constants
self.calcfunctions:add(c-1, nil, s:rep(4), string.upper("Some constants"))
self.calcfunctions:add(c, nil, "pi, π", "= 3.14159…; sin(π/2)=1, cos(π/2)=0")
self.calcfunctions:add(c+1, nil, "е, exp(1)", "= 2.71828…; log(е)=1")
local m = 500 -- mathematical
self.calcfunctions:add(m-1, nil, s:rep(5), string.upper("Mathematic functions"))
self.calcfunctions:add(m, nil, "abs(x)", "absolute value of x: abs(1)=1, abs(-2)=2")
self.calcfunctions:add(m+1, nil, "ceil(x)", "round to integer no less than x: ceil(0.4)=1")
self.calcfunctions:add(m+2, nil, "floor(x)", "round to integer no greater than x: floor(0.4)=0")
self.calcfunctions:add(m+3, nil, "^, pow(x,y)","= power: 2^10=1024, pow(4,0.5)=2")
self.calcfunctions:add(m+4, nil, "exp(x), e^x","= exponent: exp(1)=2.71828…")
self.calcfunctions:add(m+5, nil, "log(x)", "the natural logarithm: log(e)=1")
self.calcfunctions:add(m+6, nil, "log10(x)", "the base 10 logarithm: log10(10)=1")
self.calcfunctions:add(m+7, nil, "max(x,…)", "return maximal value: max(0,-1,2,1)=2")
self.calcfunctions:add(m+8, nil, "min(x,…)", "return minimal value: min(0,-1,2,1)=-1")
self.calcfunctions:add(m+9, nil, "sqrt(x)", "return square root: sqrt(4)=2")
local t = 600 -- trigonometrical
self.calcfunctions:add(t, nil, s:rep(6), string.upper("Trigonometric functions"))
self.calcfunctions:add(t+1, nil, "deg(x)", "convert radians to degrees: deg(π/2)=90")
self.calcfunctions:add(t+2, nil, "rad(x)", "convert degrees to radians: rad(180)=3.14159…")
self.calcfunctions:add(t+3, nil, "sin(x)", "sine for x given in radians: sin(π/2)=1")
self.calcfunctions:add(t+4, nil, "cos(x)", "cosine for x given in radians: cos(π)=-1")
self.calcfunctions:add(t+5, nil, "tan(x)", "tangent for x given in radians: tan(π/4)=1")
self.calcfunctions:add(t+6, nil, "asin(x)", "inverse sine (in radians): asin(1)/π=0.5")
self.calcfunctions:add(t+7, nil, "acos(x)", "inverse cosine (in radians): acos(0)/π=0.5")
self.calcfunctions:add(t+8, nil, "atan(x)", "inverse tangent (in radians): atan(1)/π=0.25")
self.calcfunctions:add(t+9, nil, "atan2(x,y)", "inverse tangent of two args: = atan(x/y)")
local h = 700 -- hyperbolical
self.calcfunctions:add(h, nil, s:rep(7), string.upper("Hyperbolic functions"))
self.calcfunctions:add(h+1, nil, "sinh(x)", "hyperbolic sine, (exp(x)-exp(-x))/2")
self.calcfunctions:add(h+2, nil, "cosh(x)", "hyperbolic cosine, (exp(x)+exp(-x))/2")
self.calcfunctions:add(h+3, nil, "tanh(x)", "hyperbolic tangent, sinh(x)/cosh(x)")
-- not yet documented > "fmod", "frexp", "huge", "ldexp", "modf", "randomseed", "random"
end
function InputBox:showHelpPage(list, title)
-- make inactive input slot
self.cursor:clear() -- hide cursor
fb.bb:dimRect(self.input_start_x-5, self.input_start_y-19, self.input_slot_w, self.fheight, self.input_bg)
fb:refresh(1, self.input_start_x-5, self.ypos, self.input_slot_w, self.h)
-- now start the helppage with own list of commands and own title
HelpPage:show(0, fb.bb:getHeight()-165, list, title)
-- on the helppage-exit, making inactive helpage
fb.bb:dimRect(0, 40, fb.bb:getWidth(), fb.bb:getHeight()-205, self.input_bg)
fb:refresh(1, 0, 40, fb.bb:getWidth(), fb.bb:getHeight()-205)
-- and active input slot
self:refreshText()
self.cursor:draw() -- show cursor = ready to input
fb:refresh(1, self.input_start_x-5, self.ypos, self.input_slot_w, self.h)
end
function InputBox:setCalcMode()
--clear previous input
self.input_string = ""
self.charlist = {}
self.charpos = 1
-- set proper layouts
self.layout = 4 -- digits
self.min_layout = 3
self.max_layout = 4
end
function InputBox:PrepareStringToCalc()
local s = string.lower(self.input_string)
-- continue interpreting the input
local mathe = { "abs", "acos", "asin", "atan2", "atan", "ceil", "cosh", "cos",
"deg", "exp", "floor", "fmod", "frexp", "huge", "ldexp", "log10", "log",
"max", "min", "modf", "pi", "pow", "rad", "randomseed", "random",
"sinh", "sin", "sqrt", "tanh", "tan", }
-- to avoid any ambiguities (like sin & sinh), one has to replace by capitals
for i=1, #mathe do
s = string.gsub(s, mathe[i], string.upper("math."..mathe[i]))
end
-- some acronyms for constants & functions
s = string.gsub(s, "π", " math.pi ")
s = string.gsub(s, "е", " math.exp(1) ")
s = string.gsub(s, "&", " and ")
s = string.gsub(s, "|", " or ")
-- return the whole string in lowercase and eventually replace double "math."
return string.gsub(string.lower(s), "math.math.", "math.")
end
-- define whether we need to calculate the result or to return 'self.input_string'
function InputBox:ModeDependentCommands()
if self.calcmode then
-- define what to do with the input_string
self.commands:add({KEY_FW_PRESS, KEY_ENTER}, nil, "joypad center",
"calculate the result",
function(self)
local s = self:PrepareStringToCalc()
if pcall(function () f = assert(loadstring("r = tostring("..s..")")) end) then
f()
self:clearText()
self.cursor:clear()
for i=1, string.len(r) do
table.insert(self.charlist, string.sub(r,i,i))
end
self.charpos = #self.charlist + 1
self.input_string = r
self:refreshText()
self.cursor:moveHorizontal(#self.charlist*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)
else
showInfoMsgWithDelay("Wrong Input! ", 2000, 1)
end -- if pcall
end -- function
)
-- add the calculator help (short list of available functions)
-- or, might be better, to make some help document and open it in reader ??
self.commands:add(KEY_M, MOD_ALT, "M",
"math functions available in calculator",
function(self)
self:defineCalcFunctions()
self:showHelpPage(self.calcfunctions, "Math Functions for Calculator")
end
)
else -- return input_string & close input box
self.commands:add({KEY_FW_PRESS, KEY_ENTER}, nil, "joypad center",
"submit input content",
function(self)
if self.input_string == "" then
self.input_string = nil
end
return "break"
end
)
-- delete calculator-specific help
self.commands:del(KEY_M, MOD_ALT, "M")
end -- if self.calcmode
end
----------------------------------------------------
@@ -445,7 +650,6 @@ end
----------------------------------------------------
NumInputBox = InputBox:new{
symbolmode = true,
layout = 4,
charlist = {}
charlist = {},
}