%%
%% %CopyrightBegin%
%%
%% Copyright Ericsson AB 2009-2012. All Rights Reserved.
%%
%% The contents of this file are subject to the Erlang Public License,
%% Version 1.1, (the "License"); you may not use this file except in
%% compliance with the License. You should have received a copy of the
%% Erlang Public License along with this software. If not, it can be
%% retrieved online at http://www.erlang.org/.
%%
%% Software distributed under the License is distributed on an "AS IS"
%% basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
%% the License for the specific language governing rights and limitations
%% under the License.
%%
%% %CopyrightEnd%
%% This is example of the widgets and usage of wxErlang
%% Hopefully it will contain all implemented widgets, it's event handling
%% and some tutorials of how to use sizers and other stuff.
-module(demo).
-include_lib("wx/include/wx.hrl").
-behaviour(wx_object).
-export([start/0, start/1, start_link/0, start_link/1, format/3,
init/1, terminate/2, code_change/3,
handle_info/2, handle_call/3, handle_cast/2, handle_event/2]).
-record(state, {win, demo, example, selector, log, code}).
start() ->
start([]).
start(Debug) ->
wx_object:start(?MODULE, Debug, []).
start_link() ->
start_link([]).
start_link(Debug) ->
wx_object:start_link(?MODULE, Debug, []).
format(Config,Str,Args) ->
Log = proplists:get_value(log, Config),
wxTextCtrl:appendText(Log, io_lib:format(Str, Args)),
ok.
-define(DEBUG_NONE, 101).
-define(DEBUG_VERBOSE, 102).
-define(DEBUG_TRACE, 103).
-define(DEBUG_DRIVER, 104).
init(Options) ->
wx:new(Options),
process_flag(trap_exit, true),
Frame = wxFrame:new(wx:null(), ?wxID_ANY, "wxErlang widgets", [{size,{1000,500}}]),
MB = wxMenuBar:new(),
File = wxMenu:new([]),
wxMenu:append(File, ?wxID_PRINT, "&Print code"),
wxMenu:appendSeparator(File),
wxMenu:append(File, ?wxID_EXIT, "&Quit"),
Debug = wxMenu:new([]),
wxMenu:appendRadioItem(Debug, ?DEBUG_NONE, "None"),
wxMenu:appendRadioItem(Debug, ?DEBUG_VERBOSE, "Verbose"),
wxMenu:appendRadioItem(Debug, ?DEBUG_TRACE, "Trace"),
wxMenu:appendRadioItem(Debug, ?DEBUG_DRIVER, "Driver"),
Help = wxMenu:new([]),
wxMenu:append(Help, ?wxID_HELP, "Help"),
wxMenu:append(Help, ?wxID_ABOUT, "About"),
wxMenuBar:append(MB, File, "&File"),
wxMenuBar:append(MB, Debug, "&Debug"),
wxMenuBar:append(MB, Help, "&Help"),
wxFrame:setMenuBar(Frame,MB),
wxFrame:connect(Frame, command_menu_selected),
wxFrame:connect(Frame, close_window),
_SB = wxFrame:createStatusBar(Frame,[]),
%% T Uppersplitter
%% O Left | Right
%% P Widgets|Code | Demo
%% S -------------------------------
%% P Log Window
TopSplitter = wxSplitterWindow:new(Frame, [{style, ?wxSP_NOBORDER}]),
UpperSplitter = wxSplitterWindow:new(TopSplitter, [{style, ?wxSP_NOBORDER}]),
LeftSplitter = wxSplitterWindow:new(UpperSplitter, [{style, ?wxSP_NOBORDER}]),
%% Setup so that sizers and initial sizes, resizes the windows correct
wxSplitterWindow:setSashGravity(TopSplitter, 0.5),
wxSplitterWindow:setSashGravity(UpperSplitter, 0.60),
wxSplitterWindow:setSashGravity(LeftSplitter, 0.20),
%% LeftSplitter:
Example = fun(Beam) ->
"ex_" ++ F = filename:rootname(Beam),
F
end,
Mods = [Example(F) || F <- filelib:wildcard("ex_*.beam")],
CreateLB = fun(Parent) ->
wxListBox:new(Parent, ?wxID_ANY,
[{style, ?wxLB_SINGLE},
{choices, Mods}])
end,
{LBPanel, [LB],_} = create_subwindow(LeftSplitter, "Example", [CreateLB]),
wxListBox:setSelection(LB, 0),
wxListBox:connect(LB, command_listbox_selected),
CreateCode = fun(Parent) ->
code_area(Parent)
end,
{CodePanel, [Code],_} = create_subwindow(LeftSplitter, "Code", [CreateCode]),
wxSplitterWindow:splitVertically(LeftSplitter, LBPanel, CodePanel,
[{sashPosition,150}]),
%% Demo:
{DemoPanel, [], DemoSz} = create_subwindow(UpperSplitter, "Demo", []),
%% UpperSplitter:
wxSplitterWindow:splitVertically(UpperSplitter, LeftSplitter, DemoPanel,
[{sashPosition,600}]),
%% TopSplitter:
AddEvent = fun(Parent) ->
EventText = wxTextCtrl:new(Parent,
?wxID_ANY,
[{style, ?wxTE_DONTWRAP bor
?wxTE_MULTILINE bor ?wxTE_READONLY}
]),
wxTextCtrl:appendText(EventText, "Welcome\n"),
EventText
end,
{EvPanel, [EvCtrl],_} = create_subwindow(TopSplitter, "Events", [AddEvent]),
wxSplitterWindow:splitHorizontally(TopSplitter, UpperSplitter, EvPanel,
[{sashPosition,-100}]),
wxFrame:show(Frame),
State = #state{win=Frame, demo={DemoPanel,DemoSz}, selector=LB, log=EvCtrl, code=Code},
%% Load the first example:
Ex = wxListBox:getStringSelection(LB),
process_flag(trap_exit, true),
ExampleObj = load_example(Ex, State),
wxSizer:add(DemoSz, ExampleObj, [{proportion,1}, {flag, ?wxEXPAND}]),
wxSizer:layout(DemoSz),
%% The windows should be set up now, Reset Gravity so we get what we want
wxSplitterWindow:setSashGravity(TopSplitter, 1.0),
wxSplitterWindow:setSashGravity(UpperSplitter, 0.0),
wxSplitterWindow:setSashGravity(LeftSplitter, 0.0),
wxSplitterWindow:setMinimumPaneSize(TopSplitter, 1),
wxSplitterWindow:setMinimumPaneSize(UpperSplitter, 1),
wxSplitterWindow:setMinimumPaneSize(LeftSplitter, 1),
wxToolTip:enable(true),
wxToolTip:setDelay(500),
{Frame, State#state{example=ExampleObj}}.
create_subwindow(Parent, BoxLabel, Funs) ->
Panel = wxPanel:new(Parent),
Sz = wxStaticBoxSizer:new(?wxVERTICAL, Panel, [{label, BoxLabel}]),
wxPanel:setSizer(Panel, Sz),
Ctrls = [Fun(Panel) || Fun <- Funs],
[wxSizer:add(Sz, Ctrl, [{proportion, 1}, {flag, ?wxEXPAND}])
|| Ctrl <- Ctrls],
{Panel, Ctrls, Sz}.
%%%%%%%%%%%%
%% Callbacks
%% Handled as in normal gen_server callbacks
handle_info({'EXIT',_, wx_deleted}, State) ->
{noreply,State};
handle_info({'EXIT',_, shutdown}, State) ->
{noreply,State};
handle_info({'EXIT',_, normal}, State) ->
{noreply,State};
handle_info(Msg, State) ->
io:format("Got Info ~p~n",[Msg]),
{noreply,State}.
handle_call(Msg, _From, State) ->
io:format("Got Call ~p~n",[Msg]),
{reply,ok,State}.
handle_cast(Msg, State) ->
io:format("Got cast ~p~n",[Msg]),
{noreply,State}.
%% Async Events are handled in handle_event as in handle_info
handle_event(#wx{event=#wxCommand{type=command_listbox_selected, cmdString=Ex}},
State = #state{demo={_,DemoSz}, example=Example, code=Code}) ->
case Ex of
[] ->
{noreply, State};
_ ->
wxSizer:detach(DemoSz, Example),
exit(wx_object:get_pid(Example), shutdown),
unload_code(Code),
NewExample = load_example(Ex, State),
wxSizer:add(DemoSz, NewExample, [{proportion,1}, {flag, ?wxEXPAND}]),
wxSizer:layout(DemoSz),
{noreply, State#state{example=NewExample}}
end;
handle_event(#wx{id = Id,
event = #wxCommand{type = command_menu_selected}},
State = #state{}) ->
case Id of
?wxID_PRINT ->
%% If you are going to printout mainly text it is easier if
%% you generate HTML code and use a wxHtmlEasyPrint
%% instead of using DCs
Module = "ex_" ++ wxListBox:getStringSelection(State#state.selector) ++ ".erl",
HEP = wxHtmlEasyPrinting:new([{name, "Print"},
{parentWindow, State#state.win}]),
Html = demo_html_tagger:erl2htmltext(Module),
wxHtmlEasyPrinting:previewText(HEP, Html),
{noreply, State};
?DEBUG_TRACE ->
wx:debug(trace),
{noreply, State};
?DEBUG_DRIVER ->
wx:debug(driver),
{noreply, State};
?DEBUG_VERBOSE ->
wx:debug(verbose),
{noreply, State};
?DEBUG_NONE ->
wx:debug(none),
{noreply, State};
?wxID_HELP ->
wx_misc:launchDefaultBrowser("http://www.erlang.org/doc/apps/wx/part_frame.html"),
{noreply, State};
?wxID_ABOUT ->
AboutString =
"Demo of various widgets\n"
"Authors: Olle & Dan",
wxMessageDialog:showModal(wxMessageDialog:new(State#state.win, AboutString,
[{style,
?wxOK bor
?wxICON_INFORMATION bor
?wxSTAY_ON_TOP},
{caption, "About"}])),
{noreply, State};
?wxID_EXIT ->
exit(wx_object:get_pid(State#state.example), shutdown),
timer:sleep(100), %% Give the example process some time to cleanup.
{stop, normal, State};
_ ->
{noreply, State}
end;
handle_event(#wx{event=#wxClose{}}, State = #state{win=Frame}) ->
io:format("~p Closing window ~n",[self()]),
ok = wxFrame:setStatusText(Frame, "Closing...",[]),
{stop, normal, State};
handle_event(Ev,State) ->
io:format("~p Got event ~p ~n",[?MODULE, Ev]),
{noreply, State}.
code_change(_, _, State) ->
{stop, not_yet_implemented, State}.
terminate(_Reason, State) ->
exit(wx_object:get_pid(State#state.example), shutdown),
timer:sleep(100), %% Give the example process some time to cleanup.
wx:destroy().
%%%%%%%%%%%%%%%%% Internals %%%%%%%%%%
load_example(Ex, #state{demo={DemoPanel,DemoSz}, log=EvCtrl, code=Code}) ->
ModStr = "ex_" ++ Ex,
Mod = list_to_atom(ModStr),
%% WxDir = code:lib_dir(wx),
%% ModFile = filename:join([WxDir, "examples","demo", ModStr ++ ".erl"]),
ModFile = ModStr ++ ".erl",
load_code(Code, file:read_file(ModFile)),
find(Code),
Mod:start([{parent, DemoPanel}, {demo_sz, DemoSz}, {log, EvCtrl}]).
-define(stc, wxStyledTextCtrl).
code_area(Parent) ->
FixedFont = wxFont:new(10, ?wxFONTFAMILY_TELETYPE, ?wxNORMAL, ?wxNORMAL,[]),
Ed = wxStyledTextCtrl:new(Parent),
?stc:styleClearAll(Ed),
?stc:styleSetFont(Ed, ?wxSTC_STYLE_DEFAULT, FixedFont),
?stc:setLexer(Ed, ?wxSTC_LEX_ERLANG),
?stc:setMarginType(Ed, 0, ?wxSTC_MARGIN_NUMBER),
LW = ?stc:textWidth(Ed, ?wxSTC_STYLE_LINENUMBER, "9"),
?stc:setMarginWidth(Ed, 0, LW),
?stc:setMarginWidth(Ed, 1, 0),
?stc:setSelectionMode(Ed, ?wxSTC_SEL_LINES),
%%?stc:hideSelection(Ed, true),
Styles = [{?wxSTC_ERLANG_DEFAULT, {0,0,0}},
{?wxSTC_ERLANG_COMMENT, {160,53,35}},
{?wxSTC_ERLANG_VARIABLE, {150,100,40}},
{?wxSTC_ERLANG_NUMBER, {5,5,100}},
{?wxSTC_ERLANG_KEYWORD, {130,40,172}},
{?wxSTC_ERLANG_STRING, {170,45,132}},
{?wxSTC_ERLANG_OPERATOR, {30,0,0}},
{?wxSTC_ERLANG_ATOM, {0,0,0}},
{?wxSTC_ERLANG_FUNCTION_NAME, {64,102,244}},
{?wxSTC_ERLANG_CHARACTER,{236,155,172}},
{?wxSTC_ERLANG_MACRO, {40,144,170}},
{?wxSTC_ERLANG_RECORD, {40,100,20}},
{?wxSTC_ERLANG_SEPARATOR,{0,0,0}},
{?wxSTC_ERLANG_NODE_NAME,{0,0,0}}],
SetStyle = fun({Style, Color}) ->
?stc:styleSetFont(Ed, Style, FixedFont),
?stc:styleSetForeground(Ed, Style, Color)
end,
[SetStyle(Style) || Style <- Styles],
?stc:setKeyWords(Ed, 0, keyWords()),
%% Scrolling
Policy = ?wxSTC_CARET_SLOP bor ?wxSTC_CARET_JUMPS bor ?wxSTC_CARET_EVEN,
?stc:setYCaretPolicy(Ed, Policy, 3),
?stc:setVisiblePolicy(Ed, Policy, 3),
%% ?stc:connect(Ed, stc_doubleclick),
?stc:setReadOnly(Ed, true),
Ed.
load_code(Ed, {ok, Code}) ->
?stc:setReadOnly(Ed, false),
?stc:setTextRaw(Ed, <<Code/binary, 0:8>>),
Lines = ?stc:getLineCount(Ed),
Sz = trunc(math:log10(Lines))+1,
LW = ?stc:textWidth(Ed, ?wxSTC_STYLE_LINENUMBER, lists:duplicate(Sz, $9)),
%%io:format("~p ~p ~p~n", [Lines, Sz, LW]),
?stc:setMarginWidth(Ed, 0, LW+5),
?stc:setReadOnly(Ed, true),
Ed.
unload_code(Ed) ->
?stc:setReadOnly(Ed, false),
?stc:setTextRaw(Ed, <<0:8>>),
?stc:setReadOnly(Ed, true),
Ed.
find(Ed) ->
?stc:searchAnchor(Ed),
Res = ?stc:searchNext(Ed, ?wxSTC_FIND_REGEXP, "^init"),
case Res >= 0 of
true ->
%% io:format("Found ~p ~n",[Res]),
?stc:scrollToLine(Ed,?stc:lineFromPosition(Ed,Res) - 1),
true;
false ->
io:format("Not Found ~s ~n",["^init"]),
false
end.
keyWords() ->
L = ["after","begin","case","try","cond","catch","andalso","orelse",
"end","fun","if","let","of","query","receive","when","bnot","not",
"div","rem","band","and","bor","bxor","bsl","bsr","or","xor"],
lists:flatten([K ++ " " || K <- L] ++ [0]).
