到目前为止还没做到用erlang在编辑框里面实现换行，这个得下次处理下！
% 在Erlang 中,wxTextCtrl控件的使用是和string 这个模块密切相关的
-module(text_spin).
-behaviour(wx_object).
-export([new/0, start/1, destroy/0]).
-export([init/1,
terminate/2,
code_change/3,
handle_info/2,
handle_call/3,
handle_cast/2,
handle_event/2]).
-include_lib("wx/include/wx.hrl").
-define(ID_PRICE_INPUT, 11).
-define(KEY_ESC, 27).
-define(KEY_UP, 315).
-define(KEY_DOWN, 317).
-record(state,
{
frame,
spin_unit = 0.2,
parent
}).
%%%===================================================================
%%% API
%%%===================================================================
%%--------------------------------------------------------------------
%% @doc
%% @spec
%% @end
%%--------------------------------------------------------------------
new() ->
_WX = wx:new(),
Size = {size, {200, 100}},
Pos = {pos, {200, 300}},
Style = {style, ?wxDEFAULT_FRAME_STYLE},
NOptions = [Pos, Size, Style],
Frame = makeFrame("wxTextCtrl Text", NOptions),
new([{parent, Frame}]).
new(Config) ->
start(Config).
start(Config) ->
wx_object:start_link({local, ?MODULE}, ?MODULE, Config, []).
%%--------------------------------------------------------------------
%% @doc
%% @spec
%% @end
%% wxclient_position_select:destroy()
%%--------------------------------------------------------------------
destroy() ->
wx_object:call(?MODULE, shutdown).
show() ->
wx_object:call(?MODULE, show).
init(Config) ->
wx:batch(fun() -> do_init(Config) end).
handle_info(Info, State) ->
io:format("Got Info ~p\n",[Info]),
{noreply, State}.
handle_call(shutdown, _From, #state{parent = Panel} = State) ->
wxPanel:destroy(Panel),
{stop, normal, ok, State};
handle_call(show, _From, #state{frame = Frame} = State) ->
wxWindow:center(Frame),
wxFrame:show(Frame),
{reply, ok, State};
handle_call(CallMsg, _From, State) ->
io:format("Got Call ~p\n",[CallMsg]),
{reply, ok, State}.
handle_cast(CastMsg, State) ->
io:format("Got cast ~p~n",[CastMsg]),
{noreply,State}.
code_change(_, _, State) ->
{stop, ignore, State}.
terminate(_Reason, _State) ->
ok.
handle_event(#wx{event = #wxCommand{type = command_text_updated}}, State) ->
io:format("===>TextCtrl ~n"),
{noreply, State};
% 通过捕获按键来控制只能输入数字和小数点, 而且小数点只能输入一个
handle_event(#wx{id = ?ID_PRICE_INPUT,
event = #wxKey{type = key_up, keyCode = KeyCode}}, State) ->
InputCtrl = wx:typeCast(wxWindow:findWindowById(?ID_PRICE_INPUT, []), wxTextCtrl),
Value = wxTextCtrl:getLineText(InputCtrl, 0),
case KeyCode of
KeyCode when (KeyCode >= $A) and (KeyCode =< $Z) ->
% 设置输入只能是数字,不能输入字母
NewInput = lists:sublist(Value, length(Value) - 1),
% 这个用string 设置wxTextCtrl 中的内容
% wxTextCtrl:setValue(InputCtrl,
% OrginalInput ++ string:chars(KeyCode - 32, 1));
wxTextCtrl:setValue(InputCtrl, NewInput),
wxTextCtrl:setInsertionPoint(InputCtrl, length(NewInput)) ;
% 只能输入一个小数点
$. ->
case string:words(Value, $.) of
Words when Words >= 2 ->
NewInput = lists:sublist(Value, length(Value) - 1),
wxTextCtrl:setValue(InputCtrl, NewInput),
wxTextCtrl:setInsertionPoint(InputCtrl, length(NewInput));
Words ->
ok
end;
_ ->
ok
end,
{noreply, State};
% 价格增减设置,每次增或者减 0.2
% 这里主要解决的是用string判断编辑框里面的内容是int 还是float
handle_event(#wx{userData = Price, event = #wxSpin{type = Type}}, State) ->
#state{spin_unit = Unit} = State,
CurrentValue =
case wxTextCtrl:getValue(Price) of
Value when (Value =:= []) or (Value =:= "0") ->
0.0;
Value ->
case string:chr(Value, $.) of
0 ->
list_to_integer(Value);
_ ->
list_to_float(Value)
end
end,
case Type of
spin_up ->
wxTextCtrl:setValue(Price, float_to_list(CurrentValue + Unit,
[{decimals, 1}, compact]));
spin_down ->
wxTextCtrl:setValue(Price, float_to_list(CurrentValue - Unit,
[{decimals, 1}, compact]))
end,
{noreply, State};
handle_event(#wx{}, State) ->
{noreply, State}.
%%-------------------------
%%%===================================================================
%%% API
%%%===================================================================
do_init(Config) ->
%% define parent Panelss
Parent = proplists:get_value(parent, Config),
Panel = wxPanel:new(Parent, []),
Price = wxTextCtrl:new(Panel, ?ID_PRICE_INPUT, [{value, "36000"},
{size, {-1, -1}}, {style, ?wxALIGN_RIGHT}]),
Spin = wxSpinButton:new(Panel, [{style, ?wxSP_VERTICAL bor ?wxSP_ARROW_KEYS}]),
wxSpinButton:setRange(Spin, -10000, 10000),
HSizer = wxBoxSizer:new(?wxHORIZONTAL),
[wxSizer:add(HSizer, Item, [{proportion, 1}, {flag, ?wxEXPAND}])
|| Item <-[Price, Spin]],
wxSpinButton:connect(Spin, spin_up, [{userData, Price}]),
wxSpinButton:connect(Spin, spin_down, [{userData, Price}]),
wxTextCtrl:connect(Price, key_up),
wxPanel:setSizer(Panel, HSizer),
wxFrame:show(Parent),
{Panel, #state{frame = Parent, parent = Panel}}.
makeFrame(Title, Options) ->
Frame = wxFrame:new(wx:null(), ?wxID_ANY, Title, Options),
MenuSet = wxMenu:new(),
MenuHelp = wxMenu:new(),
wxMenu:append(MenuHelp, 1, "About..."),
MenuBar = wxMenuBar:new(),
wxMenuBar:append(MenuBar, MenuSet, "Setting"),
wxMenuBar:append(MenuBar, MenuHelp, "Help"),
wxFrame:setMenuBar(Frame, MenuBar),
wxFrame:createStatusBar(Frame),
wxFrame:setStatusText(Frame,"deal wxTextCtrl"),
wxFrame:connect(Frame, command_menu_selected),
Frame.
