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Lua: gui library supports textboxes, for numbers or strings.

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git-svn-id: svn://pulkomandy.tk/GrafX2/trunk@2056 416bcca6-2ee7-4201-b75f-2eb2f807beb1
This commit is contained in:
Yves Rizoud 2013-02-10 20:14:08 +00:00
parent ea72bfe13f
commit 495245b17d
3 changed files with 182 additions and 52 deletions
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19
share/grafx2/scripts/_tst_dialog2.lua
View File

@ -12,12 +12,10 @@ local form = gui.dialog{
gui.button{ label="+",
x=6, y=38, w=14, h=14, repeatable=true, click=function()
counter.value=counter.value+1;
counter:render();
end},
gui.button{ label="-",
x=26, y=38, w=14, h=14, repeatable=true, click=function()
counter.value=counter.value-1;
counter:render();
end},
gui.button{ label="Help",
x=6, y=70, w=54, h=14, click=function()
@ -27,6 +25,23 @@ local form = gui.dialog{
x=6, y=18, w=54, h=14, key=27, click=function()
return true; -- causes closing
end},
gui.textbox{
x=6, y=90, nbchar=8, decimal=1,
min=450, max=1450, maxchar=8, value = 1234,
change=function()
-- do nothing
end
},
gui.textbox{
x=6, y=104, nbchar=10, maxchar=20, value = "test"
},
gui.textbox{
x=6, y=118, nbchar=8, decimal=0, min=0,
maxchar=8, value = 456,
change=function()
-- do nothing
end
},
}
form:run()

172
share/grafx2/scripts/libs/gui.lua
View File

@ -6,7 +6,40 @@
gui = {
--
-- dialog() --
-- colors
--
black = 0,
dark = 1,
light = 2,
white = 3,
-- "do nothing" function. Used as default callback
donothing = function(self)
end,
-- Metatable that hides the field "value" behind a property,
-- and calls render() after it's set.
propvalue = {
__newindex = function(self, index, value)
if index == "value" then
self._value = value
-- extra processing
self:render()
else
rawset(self, index, value)
end
end,
__index = function(self, index )
if index == "value" then
return self._value
else
return rawget( self, index )
end
end
},
--
-- dialog()
--
dialog = function(args)
local dia = {
@ -22,21 +55,26 @@ dialog = function(args)
--
-- dialog.run() --
--
run = function(this)
windowopen(this.w,this.h, this.title or "");
run = function(self)
windowopen(self.w,self.h, self.title or "");
-- examine all elements
for _,widget in ipairs(this.widgets) do
widget:render()
for _,widget in ipairs(self.widgets) do
widget:create()
end
repeat
local button, button2, key = windowdodialog();
if button > 0 then
local c = this.callbacks[button]
-- run the callback and stop the form if it returns true
if c ~= nil and c(this) then
break;
local c = self.callbacks[button]
if c ~= nil then
-- run the callback
local retvalue = c:click()
-- stop the form if it returns non-nil
if retvalue ~= nil then
windowclose();
return retvalue;
end
end
end
until key == 27;
@ -51,7 +89,7 @@ dialog = function(args)
table.insert(dia.widgets, value)
-- clickable widgets take up an auto-numbered id
if (value.click) then
dia.callbacks[id] = value.click
dia.callbacks[id] = value
id=id+1
end
end
@ -60,7 +98,7 @@ dialog = function(args)
end,
--
-- button() --
-- button()
--
button = function(args)
local but = {
@ -70,42 +108,118 @@ button = function(args)
h = args.h,
key = args.key,
label = args.label,
click = args.click or donothing,
render = args.repeatable and function(this)
windowrepeatbutton(this.x, this.y, this.w, this.h, this.label, this.key or -1);
click = args.click or gui.donothing,
create = args.repeatable and function(self)
windowrepeatbutton(self.x, self.y, self.w, self.h, self.label, self.key or -1);
end
or function(this)
windowbutton(this.x, this.y, this.w, this.h, this.label, this.key or -1);
or function(self)
windowbutton(self.x, self.y, self.w, self.h, self.label, self.key or -1);
end
}
return but;
end,
--
-- label() --
-- label()
--
label = function(args)
local fld = {
local lbl = {
x = args.x,
y = args.y,
value = args.value,
_value = args.value,
format = args.format,
fg = args.fg or 0,
bg = args.bg or 2,
render = function(this)
if type(this.format) then
windowprint(this.x, this.y, string.format(this.format, this.value), this.fg, this.bg);
fg = args.fg or gui.black,
bg = args.bg or gui.light,
render = function(self)
if type(self.format) then
windowprint(self.x, self.y, string.format(self.format, self._value), self.fg, self.bg);
else
windowprint(this.x, this.y, this.value, this.fg, this.bg);
end
windowprint(self.x, self.y, self._value, self.fg, self.bg);
end
end,
}
return fld;
lbl.create = lbl.render
setmetatable(lbl, gui.propvalue)
return lbl;
end,
--
-- textbox
--
textbox = function(args)
local txtbox = {
x = args.x,
y = args.y,
nbchar = args.nbchar, -- visible size in characters
--format = args.format, -- numeric, decimal, path
decimal = args.decimal or 0,
min = args.min,
max = args.max,
maxchar = args.maxchar, -- internal size
_value = args.value,
change = args.change or gui.donothing,
--fg = args.fg or gui.black,
--bg = args.bg or gui.light,
create = function(self)
windowinput(self.x, self.y, self.nbchar)
self:render()
end,
render = function(self)
local val = tostring(self._value)
if string.len(val) < self.nbchar then
val = string.rep(" ",self.nbchar - string.len(val)) .. val;
elseif string.len(val) > self.nbchar then
val = string.sub(val, 1, self.nbchar-1) .. gui.char.ellipsis
end
windowprint(self.x, self.y, val, gui.black, gui.light);
end,
click = function(self)
local inputtype
if (type(self._value) == "number" and ((self.min ~= nil and self.min<0) or self.decimal > 0)) then
inputtype = 3 -- entry as double
elseif (type(self._value) == "number") then
inputtype = 1 -- entry as unsigned int
else
inputtype = 0 -- entry as string
end
local accept, val = windowreadline(self.x, self.y, self._value, self.nbchar, self.maxchar, self.decimal, inputtype);
-- "do nothing" function. Used as default callback
donothing = function(this)
if accept then
if (inputtype == 1 or inputtype == 3) then
val = tonumber(val)
-- round the decimal places
val = gui.round(val, self.decimal)
end
if (self.min ~= nil and val < self.min) then
val = self.min
end
if (self.max ~= nil and val > self.max) then
val = self.max
end
self._value = val
end
self:render()
end
}
setmetatable(txtbox, gui.propvalue)
return txtbox;
end
}
gui.round = function(val, ipt)
local mult = 10^ipt
return math.floor(val * mult + 0.5) / mult
end
-- Character constants. May be useful in screens
gui.char = {
ellipsis = string.char(133), -- ...
arrowup = string.char(24),
arrowdown = string.char(25),
arrowleft = string.char(27),
arrowright = string.char(26),
vertical = string.char(18), -- double-ended arrow
horizontal = string.char(29) -- double-ended arrow
}

39
src/factory.c
View File

@ -1606,7 +1606,7 @@ int L_WindowInput(lua_State* L)
int L_WindowReadline(lua_State* L)
{
int x, y, nbchar, maxchar;
int x, y, visible_size, max_size, decimal_places=0;
const char *valuetext;
double valuenumber;
char text[255+1]="";
@ -1616,30 +1616,28 @@ int L_WindowReadline(lua_State* L)
LUA_ARG_NUMBER(1, "windowreadline", x, 3, Window_width-3-8);
LUA_ARG_NUMBER(2, "windowreadline", y, 3, Window_height-3-8);
// arg 3 can be either string or number
// arg 3 can be either string or number, it's checked below
if (nb_args < (3)) return luaL_error(L, "%s: Argument %d is missing.", "windowreadline", (3));
if (lua_isnumber(L, (3)))
LUA_ARG_NUMBER(4, "windowreadline", visible_size, 1, (Window_height-3-8)/8);
LUA_ARG_NUMBER(5, "windowreadline", max_size, 1, 255);
LUA_ARG_NUMBER(6, "windowreadline", decimal_places, 0, 16);
LUA_ARG_NUMBER(7, "windowreadline", input_type, 0, 4);
LUA_ARG_LIMIT (7, "windowreadline");
if (input_type == 3 || input_type == 1)
{
valuenumber = lua_tonumber(L, (3));
sprintf(text, "%Lf", valuenumber);
input_type=3;
// expect number
LUA_ARG_NUMBER(3, "windowreadline", valuenumber, -DBL_MAX, DBL_MAX);
Sprint_double(text, valuenumber, decimal_places, 0);
}
else if (lua_isstring(L, (3)))
else
{
valuetext = lua_tostring(L, (3));
// expect string
LUA_ARG_STRING(3, "windowreadline", valuetext);
if (strlen(valuetext)>255)
return luaL_error(L, "%s: Argument %d, string too long.", "windowreadline", (3));
strcpy(text, valuetext);
}
else
return luaL_error(L, "%s: Argument %d is neither a number nor a string.", "windowreadline", (3));
LUA_ARG_NUMBER(4, "windowreadline", nbchar, 1, (Window_height-3-8)/8);
maxchar = nbchar;
if (nb_args >= 5)
{
LUA_ARG_NUMBER(5, "windowreadline", maxchar, 1, 255);
LUA_ARG_LIMIT (5, "windowreadline");
}
if (!Windows_open)
return luaL_error(L, "windowreadline: No window is open");
@ -1649,10 +1647,10 @@ int L_WindowReadline(lua_State* L)
Hide_cursor();
Cursor_is_visible=0;
}
result = Readline_ex(x, y, text, nbchar, maxchar, input_type, 0);
result = Readline_ex(x, y, text, visible_size, max_size, input_type, decimal_places);
Window_needs_update=1;
lua_pushinteger(L, result); // 0=ESC, 1= confirm
lua_pushboolean(L, result); // 0=ESC, 1= confirm
lua_pushstring(L, text);
return 2;
}
@ -2280,7 +2278,10 @@ void Run_script(const char *script_subdirectory, const char *script_filename)
}
// Clean up any remaining dialog windows
while (Windows_open)
{
Close_window();
Display_cursor();
}
}
// Cleanup
free(Brush_backup);