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author | Dan Gudmundsson <[email protected]> | 2011-12-07 09:26:22 +0100 |
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committer | Dan Gudmundsson <[email protected]> | 2011-12-07 09:26:22 +0100 |
commit | 71249e713aaf0f6aea513fd2347b0c5f303d1e6e (patch) | |
tree | c4d4205e8666375c54dc3aeea8d3a1bf53da57bb /lib/wx/test/wx_obj_test.erl | |
parent | 6b31de5969abeb37f7d8d43815a236abadb42508 (diff) | |
parent | 8b6f6db0f5faddc970a7867aecdb03f3cde5fa78 (diff) | |
download | otp-71249e713aaf0f6aea513fd2347b0c5f303d1e6e.tar.gz otp-71249e713aaf0f6aea513fd2347b0c5f303d1e6e.tar.bz2 otp-71249e713aaf0f6aea513fd2347b0c5f303d1e6e.zip |
Merge branch 'dgud/wx/deadlock-syncevent/OTP-9725'
* dgud/wx/deadlock-syncevent/OTP-9725:
[wx] Avoid deadlock in handle_sync_event
Diffstat (limited to 'lib/wx/test/wx_obj_test.erl')
-rw-r--r-- | lib/wx/test/wx_obj_test.erl | 86 |
1 files changed, 86 insertions, 0 deletions
diff --git a/lib/wx/test/wx_obj_test.erl b/lib/wx/test/wx_obj_test.erl new file mode 100644 index 0000000000..b4d7640c7e --- /dev/null +++ b/lib/wx/test/wx_obj_test.erl @@ -0,0 +1,86 @@ +%% +%% %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. |