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%%
%% %CopyrightBegin%
%%
%% Copyright Ericsson AB 2011. 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%
-module(wx_obj_test).
-include_lib("wx/include/wx.hrl").
-export([start/1]).
%% wx_object callbacks
-export([init/1, handle_info/2, terminate/2, code_change/3, handle_call/3,
handle_sync_event/3, handle_event/2, handle_cast/2]).
-record(state, {frame, panel, opts}).
start(Opts) ->
wx_object:start_link(?MODULE, [{parent, self()}, Opts], []).
init(Opts) ->
put(parent_pid, proplists:get_value(parent, Opts)),
Frame = wxFrame:new(wx:null(), ?wxID_ANY, "Test wx_object", [{size, {500, 400}}]),
Sz = wxBoxSizer:new(?wxHORIZONTAL),
Panel = wxPanel:new(Frame),
wxSizer:add(Sz, Panel, [{flag, ?wxEXPAND}, {proportion, 1}]),
wxPanel:connect(Panel, size, [{skip, true}]),
wxPanel:connect(Panel, paint, [callback, {userData, proplists:get_value(parent, Opts)}]),
wxWindow:show(Frame),
{Frame, #state{frame=Frame, panel=Panel, opts=Opts}}.
handle_sync_event(Event = #wx{obj=Panel}, WxEvent, #state{opts=Opts}) ->
DC=wxPaintDC:new(Panel), %% We must create & destroy paintDC, or call wxEvent:skip(WxEvent))
wxPaintDC:destroy(DC), %% in sync_event. Otherwise wx on windows keeps sending the events.
Pid = proplists:get_value(parent, Opts),
true = is_pid(Pid),
Pid ! {sync_event, Event, WxEvent},
ok.
handle_event(Event, State = #state{opts=Opts}) ->
Pid = proplists:get_value(parent, Opts),
Pid ! {event, Event},
{noreply, State}.
handle_call(What, From, State) when is_function(What) ->
Result = What(State),
{reply, {call, Result, From}, State};
handle_call(What, From, State) ->
{reply, {call, What, From}, State}.
handle_cast(What, State = #state{opts=Opts}) when is_function(What) ->
Result = What(State),
Pid = proplists:get_value(parent, Opts),
Pid ! {cast, Result},
{noreply, State};
handle_cast(What, State = #state{opts=Opts}) ->
Pid = proplists:get_value(parent, Opts),
Pid ! {cast, What},
{noreply, State}.
handle_info(What, State = #state{opts=Opts}) ->
Pid = proplists:get_value(parent, Opts),
Pid ! {info, What},
{noreply, State}.
terminate(What, #state{opts=Opts}) ->
Pid = proplists:get_value(parent, Opts),
Pid ! {terminate, What},
ok.
code_change(Ver1, Ver2, State = #state{opts=Opts}) ->
Pid = proplists:get_value(parent, Opts),
Pid ! {code_change, Ver1, Ver2},
State.
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