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mobsim3.erl
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mobsim3.erl
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% src/erlang/mobsim3.erl 2018-3-8 Alan U. Kennington.
% This module will simulate a mobile network using wxErlang.
% Work In Progress!!!
% - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
% Test for this module.
%
% On host A, start Erlang, compile the module, and start a server.
% userA@hostA> erl -sname serverD
% (serverD@hostA)1> c(mobsim3).
% (serverD@hostA)2> mobsim3:startMobSimB().
%
% On host B, start Erlang, compile the module, and start some client processes.
% userB@hostB> erl -sname clientD
% (clientD@hostB)1> c(mobsim3).
% (clientD@hostB)2> mobsim3:startMobileBsample1(serverD@hostA).
%
% Remember to replace "hostA" with the real host name in startMobileBsample1().
% It is easiest if hostA and hostB are the same host.
% If they are different hosts, you must open (almost) all of your TCP ports.
% If they are the same host, run the two processes in different shell-windows.
% - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
% For a simpler client process, try this.
%
% (clientD@hostB)3> mobsim3:startMobileB(serverD@hostA).
%
% If you want to see some chaos, try this.
%
% (clientD@hostB)4> mobsim3:startMobileBsample2(serverD@hostA).
%
% For nodes with approximately twice as long life, try this.
%
% (clientD@hostB)5> mobsim3:startMobileBsample3(serverD@hostA).
%
% - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
-module(mobsim3).
% This includes a large amount of code.
% File: /usr/local/lib/erlang/lib/wx-1.8.3/src/wx.erl
-include_lib("wx/include/wx.hrl").
% Server process.
-export([startMobSimB/0, startWindowB/0]).
% Client process.
-export([startMobileB/1, startMobileBq/1,
startMobileB/4, startMobileBq/4,
procMobSimB/5, % Exported for spawning.
startMobileBsample1/1, startMobileBsample1q/1,
startMobileBsample2/1, startMobileBsample2q/1,
startMobileBsample3/1, startMobileBsample3q/1,
startMobileBsample4/1, startMobileBsample4q/1]).
% Miscellaneous.
-export([getSname/0]).
% Event handling.
% -export([handle_event/2]).
% - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
% Default initial Frame position and size.
-define(FRAME_POS_X, 0).
-define(FRAME_POS_Y, 0).
-define(FRAME_POS_INIT, {?FRAME_POS_X, ?FRAME_POS_Y}).
-define(FRAME_SIZE_W, 1200).
-define(FRAME_SIZE_H, 800).
-define(FRAME_SIZE_INIT, {?FRAME_SIZE_W, ?FRAME_SIZE_H}).
% - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
% The arena of action for the mobile nodes.
-define(ARENA_INDENT, 2).
-define(ARENA_POS_X, ?ARENA_INDENT).
-define(ARENA_POS_Y, ?ARENA_INDENT).
-define(ARENA_POS_INIT, {?ARENA_POS_X, ?ARENA_POS_Y}).
% NOTE: Must also take into account the heights of various panels.
-define(ARENA_SIZE_H_PANEL, 53). % This is a fudge! My system uses 53.
-define(ARENA_SIZE_W, (?FRAME_SIZE_W - 1 - ?ARENA_INDENT)).
-define(ARENA_SIZE_H,
(?FRAME_SIZE_H - 1 - ?ARENA_INDENT - ?ARENA_SIZE_H_PANEL)).
-define(ARENA_SIZE_INIT, {?ARENA_SIZE_W, ?ARENA_SIZE_H}).
-define(ARENA_POS_Xmax, (?ARENA_POS_X + ?ARENA_SIZE_W - 1)).
-define(ARENA_POS_Ymax, (?ARENA_POS_Y + ?ARENA_SIZE_H - 1)).
-define(ARENA_BDY_COLOUR, {255, 255, 255}).
% - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
% Some constants for menu items.
% Must avoid range 5000 to 6000, and probably below about 120 also.
% There should be a systematic way to allocate these ID values.
% Place-holders for "future growth"!!
-define(MENU_ITEM_1, 1001).
-define(MENU_ITEM_2, 1002).
-define(MENU_ITEM_3, 1003).
% - - - - - - - - - - - - - - - - - - -
% Node colours.
-define(MENU_ITEM_R, 1010).
-define(MENU_ITEM_G, 1011). % Default.
-define(MENU_ITEM_B, 1012).
% Some colours.
-define(NODE_COLOUR_R, {255, 128, 128}).
-define(NODE_COLOUR_G, {128, 255, 128}).
-define(NODE_COLOUR_B, {128, 128, 255}).
-define(NODE_COLOUR_DEFT, ?NODE_COLOUR_G).
% - - - - - - - - - - - - - - - - - - -
% Node shapes.
-define(MENU_ITEM_CIRCLE, 1020).
-define(MENU_ITEM_SQUARE, 1021).
-define(MENU_ITEM_PENTAGON, 1022).
-define(MENU_ITEM_HEXAGON, 1023).
-define(MENU_ITEM_X, 1024).
-define(NODE_SHAPE_DEFT, nodeShapeHexagon).
% - - - - - - - - - - - - - - - - - - -
% Node sizes.
-define(MENU_ITEM_RAD1, 1030). % Default.
-define(MENU_ITEM_RAD2, 1031).
-define(MENU_ITEM_RAD3, 1032).
-define(MENU_ITEM_RAD4, 1033).
% Some radius options
-define(NODE_RAD1, 5).
-define(NODE_RAD2, 10).
-define(NODE_RAD3, 20).
-define(NODE_RAD4, 40).
-define(NODE_RAD_DEFT, ?NODE_RAD2).
% - - - - - - - - - - - - - - - - - - -
% Trace options.
-define(MENU_ITEM_TRACE_DMAP, 1040). % Default is off.
-define(TRACE_DMAP_DEFT, false).
-define(MENU_ITEM_TRACE_MOUSE, 1041). % Default is off.
-define(TRACE_MOUSE_DEFT, false).
-define(MENU_ITEM_TRACE_MOTION, 1042). % Default is off.
-define(TRACE_MOTION_DEFT, false).
-define(MENU_ITEM_TRACE_CURSOR, 1043). % Default is off.
-define(TRACE_CURSOR_DEFT, false).
-define(MENU_ITEM_TRACE_WINDOW, 1044). % Default is off.
-define(TRACE_WINDOW_DEFT, false).
-define(MENU_ITEM_TRACE_MENU, 1045). % Default is off.
-define(TRACE_MENU_DEFT, false).
-define(MENU_ITEM_TRACE_UPDATE_UI, 1046). % Default is off.
-define(TRACE_UPDATE_UI_DEFT, false).
-define(MENU_ITEM_TRACE_NODE, 1047). % Default is on.
-define(TRACE_NODE_DEFT, true).
% Always define this for commenting out blocks. The value "true" is not used.
-define(hideUnused, true).
% - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
% Concatenate a list of strings.
% This should be called string:join/1, but string:* is deprecated.
% "Warning: string:join/2: deprecated; use lists:join/2 instead"
% But I don't see how lists:join/2 can accomplish this.
% - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
% See http://erlang.org/doc/man/string.html#join-2
% See http://erlang.org/doc/man/string.html#concat-2
% See http://erlang.org/doc/man/lists.html#join-2
% See http://erlang.org/doc/man/unicode.html#characters_to_list-1
% See http://erlang.org/doc/man/unicode.html#characters_to_binary-1
% Binaries, see http://erlang.org/doc/reference_manual/data_types.html#id65566
% - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
% PS. Apparently the ++ operator concatenates lists (and strings) much better!
% See http://erlang.org/doc/reference_manual/expressions.html#id83040
% - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
% PPS. Probably could also use lists:append/1 or list:append/2.
% http://erlang.org/doc/man/lists.html#append-1
% http://erlang.org/doc/man/lists.html#append-2
% - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
-ifndef(hideUnused).
stringListCat(L) when is_list(L) ->
% Using separate lines makes debugging easier.
L2 = unicode:characters_to_list(L),
unicode:characters_to_binary(L2).
-endif.
% - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
% Convert integer 0 or 1 to boolean false or true.
% For other values, return the default.
% - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
int_to_boolean(Int, Default)
when is_integer(Int) andalso is_boolean(Default) ->
% Erlang should have a test like: "Value = (Int /= 0)".
case Int of
0 ->
false;
1 ->
true;
_Else ->
Default
end.
% - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
% The default here is "false" because this function is intended for situations
% where 0 and 1 are the only expected value for Int.
% Therefore any other value is considered to be an error.
% So then it is safer to do nothing.
% This default value is the opposite of the convention in C/C++.
% - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
int_to_boolean(Int) when is_integer(Int) ->
int_to_boolean(Int, false).
% - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
% Get the "sname" flag.
% Example erl command: "erl -sname serverD".
% (serverD@hostA)1> init:get_argument(sname).
% {ok,[["serverD"]]}
% - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
% See http://erlang.org/doc/man/erl.html
% Return "" (or []) if sname is not set.
% - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
getSname() ->
% See http://erlang.org/doc/man/init.html#get_argument-1
A = init:get_argument(sname),
case A of
error ->
"";
{ok, L} ->
% Focus on the list of values. Could be more than one.
[[Sname]] = lists:sublist(L, 1, 1),
Sname;
true ->
""
end.
% - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
% See http://erlang.org/doc/man/inet.html#gethostname-0
% The documentation says that inet:gethostname() will always succeed.
% - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
getHostname() ->
{ok, H} = inet:gethostname(),
H.
% - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
% Remove the angle brackets from around a PID's string.
% - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
pidNoBrackets(Pid) when is_pid(Pid) ->
% Using separate lines makes debugging easier.
L1 = pid_to_list(Pid),
L2 = string:replace(L1, "<", "", all),
string:replace(L2, ">", "", all).
% - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
% Return one of the components of a PID's string.
% - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
pidComponent(Pid, I) when is_pid(Pid)
andalso is_integer(I) andalso I >= 1 andalso I =< 3 ->
% Using separate lines makes debugging easier.
L1 = pidNoBrackets(Pid),
L2 = string:split(L1, ".", all),
lists:sublist(L2, I, 1).
% - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
% On my system, this function has problems with Glib invoking SCIM.
% The following garbage appears after calls to:
% wxFrame:new/4. wxFrame:createStatusBar/2
%
% (clientD@hostA)286> wx1:startWindowB().
% (Erlang:8988): GLib-GObject-WARNING **: plugin
% '/usr/lib64/gtk-2.0/immodules/im-scim.so' failed to register type
% 'GtkIMContextSCIM'
% (Erlang:8988): Gtk-WARNING **: Loading IM context type 'scim' failed
% true
%
% However, a window does in fact appear!!!
% - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
createFrameB(ServerB) ->
% Get the "sname" flag.
Sname = getSname(),
Hostname = getHostname(),
TitleText = if
% See http://erlang.org/doc/reference_manual/expressions.html#id81948
Sname /= "" ->
"Mobile Simulation B: " ++ Sname ++ "@" ++ Hostname;
true ->
"Mobile Simulation B: " ++ Hostname
end,
% Create a frame on the X server.
% This call triggers the GLib-GObject-WARNING for plug-in GtkIMContextSCIM.
% io:format("Calling wxFrame:new/4.~n", []),
% http://erlang.org/doc/man/wxFrame.html
% http://docs.wxwidgets.org/2.8.12/wx_wxframe.html#wxframewxframe
FrameB = wxFrame:new(ServerB, -1, TitleText,
[{pos, ?FRAME_POS_INIT}, {size, ?FRAME_SIZE_INIT}]),
% Carriage return. Get the shell text cursor back to the left of the line.
io:format("~n", []),
% Create status bar.
% This call triggers the GLib-GObject-WARNING for plug-in GtkIMContextSCIM.
% io:format("Calling wxFrame:createStatusBar/2.~n", []),
wxFrame:createStatusBar(FrameB, []),
% Carriage return. Get the shell text cursor back to the left of the line.
io:format("~n", []),
% Create tool bar.
% This doesn't create a tool bar, and doesn't cause a Glib/SCIM warning.
% io:format("Calling wxFrame:createToolBar/2.~n", []),
wxFrame:createToolBar(FrameB, []),
% Carriage return. Get the shell text cursor back to the left of the line.
% - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
% Create MenuBar.
% http://erlang.org/doc/man/wxMenuBar.html
MenuBar1 = wxMenuBar:new(),
% - - - - - - - - - - - - - - - - - -
% Create Menu 1.
% http://erlang.org/doc/man/wxMenu.html
Menu1 = wxMenu:new([]),
% Add Menu to MenuBar.
wxMenuBar:append(MenuBar1, Menu1, "Menu 1"),
% Create some menu items.
% http://erlang.org/doc/man/wxMenuItem.html
% This MenuItem becomes a Separator if "id" is not set!
MenuItem1 = wxMenuItem:new(
[{id, ?MENU_ITEM_1}, {kind, ?wxITEM_NORMAL}, {text, "Menu Item 1"}]),
MenuItem2 = wxMenuItem:new(
[{id, ?MENU_ITEM_2}, {kind, ?wxITEM_NORMAL}, {text, "Menu Item 2"}]),
MenuItem3 = wxMenuItem:new(
[{id, ?MENU_ITEM_3}, {kind, ?wxITEM_NORMAL}, {text, "Menu Item 3"}]),
% Add menu items to menu.
wxMenu:append(Menu1, MenuItem1),
wxMenu:append(Menu1, MenuItem2),
wxMenu:append(Menu1, MenuItem3),
% This does override the wxMenuItem:new/2 setting for "text".
wxMenuItem:setText(MenuItem1, "Menu Item 1"),
wxMenuItem:setText(MenuItem2, "Menu Item 2"),
wxMenuItem:setText(MenuItem3, "Menu Item 3"),
% Add Quit item to Menu.
wxMenu:appendSeparator(Menu1),
% Standard events IDs: http://docs.wxwidgets.org/2.8.12/wx_stdevtid.html
% Avoid the range 5000 to 6000.
wxMenu:append(Menu1, ?wxID_EXIT, "&Quit"),
% - - - - - - - - - - - - - - - - - -
% Create Menu 2.
% http://erlang.org/doc/man/wxMenu.html
Menu2 = wxMenu:new([]),
wxMenuBar:append(MenuBar1, Menu2, "Node colour"),
% Create menu items, indexed by their RGB values.
% http://erlang.org/doc/man/wxMenuItem.html
% Each MenuItem becomes a Separator if "id" is not set!
ColourMenus = [
{ ?NODE_COLOUR_R, wxMenuItem:new(
[{id, ?MENU_ITEM_R}, {kind, ?wxITEM_RADIO}, {text, "Red"}]) },
{ ?NODE_COLOUR_G, wxMenuItem:new(
[{id, ?MENU_ITEM_G}, {kind, ?wxITEM_RADIO}, {text, "Green"}]) },
{ ?NODE_COLOUR_B, wxMenuItem:new(
[{id, ?MENU_ITEM_B}, {kind, ?wxITEM_RADIO}, {text, "Blue"}]) }
],
% Add menu items to the menu.
lists:foreach(fun({_K, M}) -> wxMenu:append(Menu2, M) end, ColourMenus),
% Check the radio button for the default colour.
% http://erlang.org/doc/man/lists.html#keyfind-3
% http://erlang.org/doc/reference_manual/data_types.html#id77368
% http://erlang.org/doc/man/erlang.html#element-2
% Very clumsy, but it does ensure menu/default synchronization.
wxMenuItem:check(
element(2, lists:keyfind(?NODE_COLOUR_DEFT, 1, ColourMenus)),
[{check, true}]),
% - - - - - - - - - - - - - - - - - -
% Create Menu 3.
% http://erlang.org/doc/man/wxMenu.html
Menu3 = wxMenu:new([]),
wxMenuBar:append(MenuBar1, Menu3, "Node shape"),
% Create menu items, indexed by their corresponding literals.
% http://erlang.org/doc/man/wxMenuItem.html
ShapeMenus = [
{ nodeShapeCircle, wxMenuItem:new([{id, ?MENU_ITEM_CIRCLE},
{kind, ?wxITEM_RADIO}, {text, "Circle"}]) },
{ nodeShapeSquare, wxMenuItem:new([{id, ?MENU_ITEM_SQUARE},
{kind, ?wxITEM_RADIO}, {text, "Square"}]) },
{ nodeShapePentagon, wxMenuItem:new([{id, ?MENU_ITEM_PENTAGON},
{kind, ?wxITEM_RADIO}, {text, "Pentagon"}]) },
{ nodeShapeHexagon, wxMenuItem:new([{id, ?MENU_ITEM_HEXAGON},
{kind, ?wxITEM_RADIO}, {text, "Hexagon"}]) },
{ nodeShapeX, wxMenuItem:new([{id, ?MENU_ITEM_X},
{kind, ?wxITEM_RADIO}, {text, "X"}]) }
],
% Add items to the menu.
lists:foreach(fun({_K, M}) -> wxMenu:append(Menu3, M) end, ShapeMenus),
% Check the radio button for the default shape.
wxMenuItem:check(
element(2, lists:keyfind(?NODE_SHAPE_DEFT, 1, ShapeMenus)),
[{check, true}]),
% - - - - - - - - - - - - - - - - - -
% Create Menu 4.
% http://erlang.org/doc/man/wxMenu.html
Menu4 = wxMenu:new([]),
wxMenuBar:append(MenuBar1, Menu4, "Node radius"),
% Create menu items.
RadiusMenus = [
{ ?NODE_RAD1, wxMenuItem:new([{id, ?MENU_ITEM_RAD1},
{kind, ?wxITEM_RADIO}, {text,
integer_to_list(?NODE_RAD1) ++ " pixels"}]) },
{ ?NODE_RAD2, wxMenuItem:new([{id, ?MENU_ITEM_RAD2},
{kind, ?wxITEM_RADIO}, {text,
integer_to_list(?NODE_RAD2) ++ " pixels"}]) },
{ ?NODE_RAD3, wxMenuItem:new([{id, ?MENU_ITEM_RAD3},
{kind, ?wxITEM_RADIO}, {text,
integer_to_list(?NODE_RAD3) ++ " pixels"}]) },
{ ?NODE_RAD4, wxMenuItem:new([{id, ?MENU_ITEM_RAD4},
{kind, ?wxITEM_RADIO}, {text,
integer_to_list(?NODE_RAD4) ++ " pixels"}]) }
],
% Add items to the menu.
lists:foreach(fun({_K, M}) -> wxMenu:append(Menu4, M) end, RadiusMenus),
% Check the radio button for the default.
wxMenuItem:check(
element(2, lists:keyfind(?NODE_RAD_DEFT, 1, RadiusMenus)),
[{check, true}]),
% - - - - - - - - - - - - - - - - - -
% Menu 5.
Menu5 = wxMenu:new([]),
wxMenuBar:append(MenuBar1, Menu5, "Trace options"),
% Menu items.
MenuItemTraceMouse = wxMenuItem:new([{id, ?MENU_ITEM_TRACE_MOUSE},
{kind, ?wxITEM_CHECK}, {text, "Mouse events"}]),
MenuItemTraceMotion = wxMenuItem:new([{id, ?MENU_ITEM_TRACE_MOTION},
{kind, ?wxITEM_CHECK}, {text, "Motion events"}]),
MenuItemTraceCursor = wxMenuItem:new([{id, ?MENU_ITEM_TRACE_CURSOR},
{kind, ?wxITEM_CHECK}, {text, "Cursor events"}]),
MenuItemTraceWindow = wxMenuItem:new([{id, ?MENU_ITEM_TRACE_WINDOW},
{kind, ?wxITEM_CHECK}, {text, "Window events"}]),
MenuItemTraceMenu = wxMenuItem:new([{id, ?MENU_ITEM_TRACE_MENU},
{kind, ?wxITEM_CHECK}, {text, "Menu events"}]),
MenuItemTraceUpdateUI = wxMenuItem:new([{id, ?MENU_ITEM_TRACE_UPDATE_UI},
{kind, ?wxITEM_CHECK}, {text, "UpdateUI events"}]),
MenuItemTraceDmap = wxMenuItem:new([{id, ?MENU_ITEM_TRACE_DMAP},
{kind, ?wxITEM_CHECK}, {text, "Display list"}]),
MenuItemTraceNode = wxMenuItem:new([{id, ?MENU_ITEM_TRACE_NODE},
{kind, ?wxITEM_CHECK}, {text, "Node events"}]),
% Add menu items to the menu.
wxMenu:append(Menu5, MenuItemTraceMouse),
wxMenu:append(Menu5, MenuItemTraceMotion),
wxMenu:append(Menu5, MenuItemTraceCursor),
wxMenu:append(Menu5, MenuItemTraceWindow),
wxMenu:append(Menu5, MenuItemTraceMenu),
wxMenu:append(Menu5, MenuItemTraceUpdateUI),
wxMenu:append(Menu5, MenuItemTraceDmap),
wxMenu:append(Menu5, MenuItemTraceNode),
% Show the defaults check/uncheck.
wxMenuItem:check(MenuItemTraceMouse, [{check, ?TRACE_MOUSE_DEFT}]),
wxMenuItem:check(MenuItemTraceMotion, [{check, ?TRACE_MOTION_DEFT}]),
wxMenuItem:check(MenuItemTraceCursor, [{check, ?TRACE_CURSOR_DEFT}]),
wxMenuItem:check(MenuItemTraceWindow, [{check, ?TRACE_WINDOW_DEFT}]),
wxMenuItem:check(MenuItemTraceMenu, [{check, ?TRACE_MENU_DEFT}]),
wxMenuItem:check(MenuItemTraceUpdateUI, [{check, ?TRACE_UPDATE_UI_DEFT}]),
wxMenuItem:check(MenuItemTraceDmap, [{check, ?TRACE_DMAP_DEFT}]),
wxMenuItem:check(MenuItemTraceNode, [{check, ?TRACE_NODE_DEFT}]),
% - - - - - - - - - - - - - - - - - -
% Add the MenuBar to the Frame.
wxFrame:setMenuBar(FrameB, MenuBar1),
% - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
% Set keyboard focus.
% This seems to have no effect.
% wxFrame:setFocus(FrameB),
wxWindow:setFocus(FrameB),
% - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
% See http://erlang.org/doc/man/wxFrame.html
% which says that wxFrame is derived from:
% wxTopLevelWindow, wxWindow, wxEvtHandler
% http://erlang.org/doc/man/wxEvtHandler.html#connect-2
% wxCloseEventType() = close_window | end_session | query_end_session
% Events defined in file: /usr/local/lib/erlang/lib/wx-1.8.3/include/wx.hrl
% wxClose
wxFrame:connect(FrameB, close_window),
wxFrame:connect(FrameB, end_session),
wxFrame:connect(FrameB, query_end_session),
% - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
% Other event classes and types.
% wxActivate
wxFrame:connect(FrameB, activate),
wxFrame:connect(FrameB, activate_app),
wxFrame:connect(FrameB, hibernate),
% wxAuiManager [Advanced User Interface]
% See http://docs.wxwidgets.org/2.8.12/wx_wxauioverview.html#wxauioverview
wxFrame:connect(FrameB, aui_pane_button),
wxFrame:connect(FrameB, aui_pane_close),
wxFrame:connect(FrameB, aui_pane_maximize),
wxFrame:connect(FrameB, aui_pane_restore),
% The following line gives an error message at run time.
% ** exception exit: {{badarg,aui_pane_activated}, ....
% wxFrame:connect(FrameB, aui_pane_activated),
wxFrame:connect(FrameB, aui_render),
wxFrame:connect(FrameB, aui_find_manager),
% wxAuiNotebook [Advanced User Interface]
% (Not interesting enough to list here.)
% wxCalendar
% (Not relevant enough to list here.)
% wxChildFocus
wxFrame:connect(FrameB, child_focus),
% wxClipboardText
wxFrame:connect(FrameB, command_text_copy),
wxFrame:connect(FrameB, command_text_cut),
wxFrame:connect(FrameB, command_text_paste),
% wxColourPicker
wxFrame:connect(FrameB, command_colourpicker_changed),
% Callback handler for command_menu_selected.
% This does actually get called. But I want to exit the loop, not crash out.
% CmdMenuSelHand = fun(EventRecord, EventObject) ->
% io:format("event record=~p~nevent object=~p~n",
% [EventRecord, EventObject])
% end,
% wxFrame:connect(FrameB, command_menu_selected,
% [{callback, CmdMenuSelHand}]),
% wxCommand
wxFrame:connect(FrameB, command_button_clicked),
wxFrame:connect(FrameB, command_checkbox_clicked),
wxFrame:connect(FrameB, command_choice_selected),
wxFrame:connect(FrameB, command_listbox_selected),
wxFrame:connect(FrameB, command_listbox_doubleclicked),
wxFrame:connect(FrameB, command_text_updated),
wxFrame:connect(FrameB, command_text_enter),
wxFrame:connect(FrameB, command_menu_selected),
wxFrame:connect(FrameB, command_slider_updated),
wxFrame:connect(FrameB, command_radiobox_selected),
wxFrame:connect(FrameB, command_radiobutton_selected),
wxFrame:connect(FrameB, command_scrollbar_updated),
wxFrame:connect(FrameB, command_vlbox_selected),
wxFrame:connect(FrameB, command_combobox_selected),
wxFrame:connect(FrameB, command_tool_rclicked),
wxFrame:connect(FrameB, command_tool_enter),
wxFrame:connect(FrameB, command_checklistbox_toggled),
wxFrame:connect(FrameB, command_togglebutton_clicked),
wxFrame:connect(FrameB, command_left_click),
wxFrame:connect(FrameB, command_left_dclick),
wxFrame:connect(FrameB, command_right_click),
wxFrame:connect(FrameB, command_set_focus),
wxFrame:connect(FrameB, command_kill_focus),
wxFrame:connect(FrameB, command_enter),
% wxContextMenu
wxFrame:connect(FrameB, context_menu),
% wxDate
wxFrame:connect(FrameB, date_changed),
% wxDisplayChanged
wxFrame:connect(FrameB, display_changed),
% wxDropFiles
wxFrame:connect(FrameB, drop_files),
% wxErase
wxFrame:connect(FrameB, erase_background),
% wxFileDirPicker
% (Not relevant enough to list here.)
% wxFocus
wxFrame:connect(FrameB, set_focus),
wxFrame:connect(FrameB, kill_focus),
% wxFontPicker
wxFrame:connect(FrameB, command_fontpicker_changed),
% wxGrid
% (Too many to list.)
% wxHelp
wxFrame:connect(FrameB, help),
wxFrame:connect(FrameB, detailed_help),
% wxHtmlLink
wxFrame:connect(FrameB, command_html_link_clicked),
% wxIconize
wxFrame:connect(FrameB, iconize),
% wxIdle
wxFrame:connect(FrameB, idle),
% wxInitDialog
wxFrame:connect(FrameB, init_dialog),
% wxJoystick
wxFrame:connect(FrameB, joy_button_down),
wxFrame:connect(FrameB, joy_button_up),
wxFrame:connect(FrameB, joy_move),
wxFrame:connect(FrameB, joy_zmove),
% wxKey
% These never arrive.
wxFrame:connect(FrameB, 'char'),
wxFrame:connect(FrameB, char_hook),
wxFrame:connect(FrameB, key_down),
wxFrame:connect(FrameB, key_up),
% wxList
% (Too many to list.)
% wxMaximize
wxFrame:connect(FrameB, maximize),
% wxMenu
wxFrame:connect(FrameB, menu_open),
wxFrame:connect(FrameB, menu_close),
wxFrame:connect(FrameB, menu_highlight),
% wxMouse
wxFrame:connect(FrameB, left_down),
wxFrame:connect(FrameB, left_up),
wxFrame:connect(FrameB, middle_down),
wxFrame:connect(FrameB, middle_up),
wxFrame:connect(FrameB, right_down),
wxFrame:connect(FrameB, right_up),
wxFrame:connect(FrameB, motion),
wxFrame:connect(FrameB, enter_window),
wxFrame:connect(FrameB, leave_window),
wxFrame:connect(FrameB, left_dclick),
wxFrame:connect(FrameB, middle_dclick),
wxFrame:connect(FrameB, right_dclick),
wxFrame:connect(FrameB, mousewheel),
% wxMove
wxFrame:connect(FrameB, move),
% wxNavigationKey
wxFrame:connect(FrameB, navigation_key),
% wxNotebook
wxFrame:connect(FrameB, command_notebook_page_changed),
wxFrame:connect(FrameB, command_notebook_page_changing),
% wxPaint
% This means refresh the frame because of exposure of hidden regions.
wxFrame:connect(FrameB, paint),
% wxPaletteChanged
wxFrame:connect(FrameB, palette_changed),
% wxQueryNewPalette
wxFrame:connect(FrameB, query_new_palette),
% wxSash
wxFrame:connect(FrameB, sash_dragged),
% wxScroll
wxFrame:connect(FrameB, scroll_top),
wxFrame:connect(FrameB, scroll_bottom),
wxFrame:connect(FrameB, scroll_lineup),
wxFrame:connect(FrameB, scroll_linedown),
wxFrame:connect(FrameB, scroll_pageup),
wxFrame:connect(FrameB, scroll_pagedown),
wxFrame:connect(FrameB, scroll_thumbtrack),
wxFrame:connect(FrameB, scroll_thumbrelease),
wxFrame:connect(FrameB, scroll_changed),
% wxScrollWin
wxFrame:connect(FrameB, scrollwin_top),
wxFrame:connect(FrameB, scrollwin_bottom),
wxFrame:connect(FrameB, scrollwin_lineup),
wxFrame:connect(FrameB, scrollwin_linedown),
wxFrame:connect(FrameB, scrollwin_pageup),
wxFrame:connect(FrameB, scrollwin_pagedown),
wxFrame:connect(FrameB, scrollwin_thumbtrack),
wxFrame:connect(FrameB, scrollwin_thumbrelease),
% wxSetCursor
% This generates a huge number of events!
wxFrame:connect(FrameB, set_cursor),
% wxShow
wxFrame:connect(FrameB, show),
% wxSize
wxFrame:connect(FrameB, size),
% wxSpin
wxFrame:connect(FrameB, command_spinctrl_updated),
wxFrame:connect(FrameB, spin_up),
wxFrame:connect(FrameB, spin_down),
wxFrame:connect(FrameB, spin),
% wxSplitter
% (Not relevant enough to list here.)
% wxStyledText
% (Too many to list. Probably not relevant.)
% wxSysColourChanged
wxFrame:connect(FrameB, sys_colour_changed),
% wxTaskBarIcon
% (Too many to list. Probably not relevant.)
% wxTree
% (Too many to list. Probably not relevant.)
% wxUpdateUI
% This generates a huge number of events!
wxFrame:connect(FrameB, update_ui),
% wxWindowCreate
wxFrame:connect(FrameB, create),
% wxWindowDestroy
wxFrame:connect(FrameB, destroy),
% - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
% The text for wxFrame:setStatusText/3 appears at the bottom of the window.
% See http://erlang.org/doc/man/wxFrame.html#setStatusText-2
ok = wxFrame:setStatusText(FrameB, "Mobile simulation status", []),
% Get the current client drawing area.
{ Wclient, Hclient } = wxWindow:getClientSize(FrameB),
io:format("Client size = (~p, ~p)~n", [Wclient, Hclient]),
% Return the newly created frame.
FrameB.
% - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
% Redraw the window from the current display list.
% - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
drawWindowB(_FrameB, DCclient, Dmap, Vars)
when is_map(Dmap) andalso is_map(Vars) ->
% Get the current client drawing area.
% See http://erlang.org/doc/man/wxBufferedDC.html
% http://docs.wxwidgets.org/3.0/classwx_buffered_d_c.html
DCbuf = wxBufferedDC:new(DCclient),
% Create a white brush for the background.
BrushBG = wxBrush:new({255, 255, 255}),
% Create a brush for the Arena of Action.
BrushArena = wxBrush:new(?ARENA_BDY_COLOUR),
% Create the brush for the nodes, with default colour if not found.
% http://erlang.org/doc/man/maps.html#get-3
ColNode = maps:get(nodeColour, Vars, ?NODE_COLOUR_DEFT),
BrushCircle = wxBrush:new(ColNode),
% Node shape and radius.
NodeShape = maps:get(nodeShape, Vars, ?NODE_SHAPE_DEFT),
NodeRadius = maps:get(nodeRadius, Vars, ?NODE_RAD_DEFT),
wxBufferedDC:setBackground(DCbuf, BrushBG),
wxBufferedDC:clear(DCbuf),
% Draw the Arena boundary.
% { Wclient, Hclient } = wxWindow:getClientSize(FrameB),
% io:format("Client size = (~p, ~p)~n", [Wclient, Hclient]),
{Wclient, Hclient} = maps:get(sizeClient, Vars, ?ARENA_SIZE_INIT),
ArenaPosX = ?ARENA_INDENT,
ArenaPosY = ?ARENA_INDENT,
ArenaPosW = Wclient - ?ARENA_INDENT * 2,
ArenaPosH = Hclient - ?ARENA_INDENT * 2,
wxBufferedDC:setBrush(DCbuf, BrushArena),
% wxDC:drawRectangle(DCbuf, ?ARENA_POS_INIT, ?ARENA_SIZE_INIT),
wxDC:drawRectangle(DCbuf, {ArenaPosX, ArenaPosY}, {ArenaPosW, ArenaPosH}),
% Draw the nodes.
wxBufferedDC:setBrush(DCbuf, BrushCircle),
% Pre-compute pentagon/hexagon dimensions to improve efficiency. (?)
case NodeShape of
nodeShapePentagon ->
Cos72 = (math:sqrt(5.0) - 1.0)/4.0,
Sin72 = math:sqrt(1.0 - Cos72 * Cos72),
% Probably multiplication is faster than the square root.
% Cos36 = (math:sqrt(5.0) + 1.0)/4.0,
% Sin36 = math:sqrt(1.0 - Cos36 * Cos36),
Cos36 = Sin72 * Sin72 * 2 - 1,
Sin36 = Cos72 * Sin72 * 2,
Rcos36 = ceil(NodeRadius * Cos36 + 0.5) - 1,
Rsin36 = ceil(NodeRadius * Sin36 + 0.5) - 1,
Rcos72 = ceil(NodeRadius * Cos72 + 0.5) - 1,
Rsin72 = ceil(NodeRadius * Sin72 + 0.5) - 1,
% Keep the compiler happy.
Rcos60 = 0.0,
Rsin60 = 0.0;
nodeShapeHexagon ->
Cos60 = 0.5,
Sin60 = math:sqrt(0.75),
% Note: math:floor() returns float, floor() returns integer.
% Rcos60 = floor(NodeRadius * Cos60 + 0.5),
% Rsin60 = floor(NodeRadius * Sin60 + 0.5),
Rcos60 = ceil(NodeRadius * Cos60 + 0.5) - 1,
Rsin60 = ceil(NodeRadius * Sin60 + 0.5) - 1,
% Keep the compiler happy.
Rcos36 = 0.0,
Rsin36 = 0.0,
Rcos72 = 0.0,
Rsin72 = 0.0;
_Else ->
% http://erlang.org/doc/reference_manual/expressions.html#id80984
% If I don't define Rcos60 and Rsin60 here, I get errors.
% mobsim3.erl:747: variable 'Rcos60' unsafe in 'case' (line 708)
% mobsim3.erl:747: variable 'Rsin60' unsafe in 'case' (line 708)
% mobsim3.erl:748: variable 'Rcos60' unsafe in 'case' (line 708)
% mobsim3.erl:748: variable 'Rsin60' unsafe in 'case' (line 708)
% mobsim3.erl:750: variable 'Rcos60' unsafe in 'case' (line 708)
% mobsim3.erl:750: variable 'Rsin60' unsafe in 'case' (line 708)
% mobsim3.erl:751: variable 'Rcos60' unsafe in 'case' (line 708)
% mobsim3.erl:751: variable 'Rsin60' unsafe in 'case' (line 708)
% If I do define Cos60 and Sin60 here, I get this.
% mobsim3.erl:718: Warning: variable 'Cos60' is unused
% mobsim3.erl:719: Warning: variable 'Sin60' is unused
% The compiler is too clever by half!
Rcos36 = 0.0,
Rsin36 = 0.0,
Rcos60 = 0.0,
Rsin60 = 0.0,
Rcos72 = 0.0,
Rsin72 = 0.0
end,
% - - - - - - - - - - - - - - - - - - -
% I really want maps:foreach/2 here, but it doesn't exist.
% http://erlang.org/doc/man/maps.html#fold-3
% http://erlang.org/doc/man/lists.html#foreach-2
FnD = fun(P, { Xold, Yold, Xnew, Ynew, Nevt }, AccIn) ->
% PIDstring = pid_to_list(P), % Example: "<18000.879.0>".
% PIDstring = pidNoBrackets(P), % Example: "18000.879.0".
PIDstring = pidComponent(P, 2), % Example: "879".
wxDC:drawLine(DCbuf, {Xold, Yold}, {Xnew, Ynew}),
case NodeShape of
nodeShapeCircle ->
% http://erlang.org/doc/man/wxDC.html#drawCircle-3
wxDC:drawCircle(DCbuf, {Xnew, Ynew}, NodeRadius),
wxDC:drawPoint(DCbuf, {Xnew, Ynew});
nodeShapeSquare ->
% http://erlang.org/doc/man/wxDC.html#drawRectangle-2
wxDC:drawRectangle(DCbuf, {Xnew - NodeRadius, Ynew - NodeRadius,
2 * NodeRadius, 2 * NodeRadius}),
wxDC:drawPoint(DCbuf, {Xnew, Ynew});
nodeShapePentagon ->
% http://erlang.org/doc/man/wxDC.html#drawPolygon-2
Pts = [{Xnew, Ynew - NodeRadius},
{Xnew + Rsin72, Ynew - Rcos72},
{Xnew + Rsin36, Ynew + Rcos36},
{Xnew - Rsin36, Ynew + Rcos36},
{Xnew - Rsin72, Ynew - Rcos72}],
wxDC:drawPolygon(DCbuf, Pts),
wxDC:drawPoint(DCbuf, {Xnew, Ynew});
nodeShapeHexagon ->
% http://erlang.org/doc/man/wxDC.html#drawPolygon-2
Pts = [{Xnew - NodeRadius, Ynew},
{Xnew - Rcos60, Ynew + Rsin60},
{Xnew + Rcos60, Ynew + Rsin60},
{Xnew + NodeRadius, Ynew},
{Xnew + Rcos60, Ynew - Rsin60},
{Xnew - Rcos60, Ynew - Rsin60}],
wxDC:drawPolygon(DCbuf, Pts),
wxDC:drawPoint(DCbuf, {Xnew, Ynew});
nodeShapeX ->
wxDC:drawLine(DCbuf, {Xnew - NodeRadius, Ynew + NodeRadius},
{Xnew + NodeRadius, Ynew - NodeRadius}),
wxDC:drawLine(DCbuf, {Xnew - NodeRadius, Ynew - NodeRadius},
{Xnew + NodeRadius, Ynew + NodeRadius});
true ->
ok
end,
% NOTE. Make a rough guess of best string location. Fix this later!
wxDC:drawText(DCbuf,
PIDstring ++ " [" ++ integer_to_list(Nevt) ++ "]",
{Xnew + 3, Ynew + 3}),
AccIn
end,
maps:fold(FnD, 0, Dmap),
% Destroy the brushes.
wxBrush:destroy(BrushCircle),
wxBrush:destroy(BrushArena),
wxBrush:destroy(BrushBG),
% Destroying the BufferedDC transfers the buffer to the ClientDC.
wxBufferedDC:destroy(DCbuf),
ok.
% - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
% Send window client size update to mobile nodes if the size has changed.
% - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
sendSizeUpdateToMobs(Dmap, Vars, {WclientNew, HclientNew}) ->
% Fetch the old size from the event handler's local variables.
{WclientOld, HclientOld} = maps:get(sizeClient, Vars, ?ARENA_SIZE_INIT),
if {WclientOld, HclientOld} /= {WclientNew, HclientNew} ->
FnD = fun(PidMobile, _, AccIn) ->
PidMobile ! { self(), sizeUpdate, {WclientNew, HclientNew} },
AccIn
end,
maps:fold(FnD, 0, Dmap);
true -> ok
end.
% - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
% Event-handling loop for FrameB window.
% Apparently tail-recursive.
% If exit(normal) is called, this function will not return.
% So to allow this function to return, the inner case-statement of
% a nested pair of case-statements returns either carry_on or exit_normal.
% At the end of the inner case-statement, its output-value is used in
% an if-statement to determine whether to recurse or just "fall off the end".
% If the outer case-statement "falls off the end", this function returns to
% the caller, which is startWindowB/0, which can then call wx:destroy/0.
% If exit(normal) is called in the inner loop, this function cannot return.
% - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
% Dmap is the "display map", which lists all objects to be displayed.
% For lists, see:
% http://erlang.org/doc/getting_started/seq_prog.html#id62718
% http://erlang.org/doc/reference_manual/data_types.html#id77524
% http://erlang.org/doc/reference_manual/expressions.html#id83040
% http://erlang.org/doc/man/lists.html
% http://erlang.org/doc/man/erlang.html#is_list-1
%
% For maps, see:
% http://erlang.org/doc/getting_started/seq_prog.html#id62718
% http://erlang.org/doc/reference_manual/data_types.html#id77432
% http://erlang.org/doc/reference_manual/expressions.html#id83109
% http://erlang.org/doc/man/maps.html
% http://erlang.org/doc/man/erlang.html#is_map-1
%
% For arrays, see:
% http://erlang.org/doc/man/array.html#is_array-1
%
% - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
% Dmap is a map containing the current display-list, i.e. list of live nodes.
% Vars is a map containing "local variables", which do not exist in Erlang!!
% - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
handleWindowB(FrameB, DCclient, Dmap, Vars)
when is_map(Dmap) andalso is_map(Vars) ->
receive
% Try to catch all events in a single case.
#wx{id=Id, obj=Obj, event=EvtB} ->
% Trace all messages.
% io:format("Process ~p event id=~p, obj=~p, event=~n ~p~n",
% [self(), Id, Obj, EvtB]),
% Each case must return carry_on or exit_normal.
% Alternatively let CarryOn equal a new version of Vars.
% This might seem bizarre, but what else can you do if all
% variables are constant?
CarryOn = case EvtB of
#wxClose{type=TypeB} ->
TraceWindow = maps:get(traceWindow, Vars, ?TRACE_WINDOW_DEFT),
case TypeB of
% This is the event which is called when the window is closed.
close_window ->
if TraceWindow ->
io:format("Process ~p closing window id=~p, obj=~p~n",
[self(), Id, Obj]);
true -> ok
end,
wxFrame:setStatusText(FrameB, "Closing now...", []),
wxWindow:destroy(FrameB),
% exit(normal);