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+%%
+%% %CopyrightBegin%
+%%
+%% Copyright Ericsson AB 1996-2009. 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%
+%%
+
+%%
+%% ------------------------------------------------------------
+%% Erlang Graphics Interface and front end server
+%% ------------------------------------------------------------
+%%
+
+-module(gs).
+
+
+%% ----- Exports -----
+-export([start/0, stop/0, start/1]).
+-export([create/3, create/4, is_id/1]).
+-export([info/1,create_tree/2]).
+-export([config/2, read/2, destroy/1]).
+-export([get_id/1]).
+
+%% ----- Not standard but convenient -----
+-export([error/2,creation_error/2,assq/2,pair/2,val/2,val/3,foreach/3]).
+-export([create/2]).
+-export([window/1,window/2,window/3,button/1,button/2,button/3]).
+-export([radiobutton/1,radiobutton/2,radiobutton/3]).
+-export([checkbutton/1,checkbutton/2,checkbutton/3]).
+-export([frame/1,frame/2,frame/3,label/1,label/2,label/3]).
+-export([message/1,message/2,message/3]).
+-export([listbox/1,listbox/2,listbox/3,entry/1,entry/2,entry/3]).
+-export([scrollbar/1,scrollbar/2,scrollbar/3]).
+-export([scale/1,scale/2,scale/3]).
+-export([canvas/1,canvas/2,canvas/3,editor/1,editor/2,editor/3]).
+-export([prompter/1,prompter/2,prompter/3]).
+-export([line/1,line/2,line/3,oval/1,oval/2,oval/3]).
+-export([rectangle/1,rectangle/2,rectangle/3]).
+-export([polygon/1,polygon/2,polygon/3]).
+-export([text/1,text/2,text/3,image/1,image/2,image/3,arc/1,arc/2,arc/3]).
+-export([menu/1,menu/2,menu/3,menubutton/1,menubutton/2,menubutton/3]).
+-export([menubar/1,menubar/2,menubar/3]).
+-export([grid/1,grid/2,grid/3]).
+-export([gridline/1,gridline/2,gridline/3]).
+-export([menuitem/1,menuitem/2,menuitem/3]).
+
+-include("gstk.hrl").
+
+%% ----- Start/Stop -----
+
+start() ->
+ start([]).
+
+start(Opts) ->
+ Opts2 = gstk_generic:merge_default_options(gs_widgets:default_options(gs),
+ lists:sort(Opts)),
+ gs_frontend:start(Opts2).
+
+stop() ->
+ gs_frontend:stop().
+
+%% ----- Widget Commands -----
+
+create(Objtype, Parent) ->
+ GsPid = frontend(Parent),
+ tag_if_ok(gs_frontend:create(GsPid,{Objtype, undefined, obj_id(Parent),[]})
+ ,GsPid).
+
+create(Objtype, Parent, Opts) when is_list(Opts) ->
+ GsPid = frontend(Parent),
+ tag_if_ok(gs_frontend:create(GsPid,{Objtype,undefined,obj_id(Parent),Opts}),
+ GsPid);
+create(Objtype, Parent, Opt) ->
+ GsPid = frontend(Parent),
+ tag_if_ok(gs_frontend:create(GsPid,
+ {Objtype,undefined,obj_id(Parent),[Opt]}),
+ GsPid).
+
+create(Objtype, Name, Parent, Opts) when is_list(Opts) ->
+ GsPid = frontend(Parent),
+ tag_if_ok(gs_frontend:create(GsPid,{Objtype, Name, obj_id(Parent),Opts}),
+ GsPid);
+create(Objtype, Name, Parent, Opt) ->
+ GsPid = frontend(Parent),
+ tag_if_ok(gs_frontend:create(GsPid,{Objtype,Name,obj_id(Parent),[Opt]}),
+ GsPid).
+
+tag_if_ok(Int,Pid) when is_integer(Int) ->
+ {Int,Pid};
+tag_if_ok(Err,_) ->
+ Err.
+
+config(IdOrName, Options) when is_list(Options) ->
+ gs_frontend:config(frontend(IdOrName),{obj_id(IdOrName),Options});
+config(IdOrName, Option) ->
+ gs_frontend:config(frontend(IdOrName),{obj_id(IdOrName),[Option]}).
+
+read(IdOrName, Option) ->
+ gs_frontend:read(frontend(IdOrName),{obj_id(IdOrName),Option}).
+
+destroy(IdOrName) ->
+ gs_frontend:destroy(frontend(IdOrName),obj_id(IdOrName)).
+
+get_id(Name) ->
+ read(Name,id).
+
+info(version) -> "1.3.2";
+info(Option) ->
+ gs_frontend:info(Option).
+
+is_id({Int,Pid}) when is_integer(Int), is_pid(Pid) -> true;
+is_id(_) -> false.
+
+frontend({_,Pid}) when is_pid(Pid) -> Pid;
+frontend({AtomName,Node}) when is_atom(AtomName),is_atom(Node) ->
+ rpc:call(Node,erlang,whereis,[gs_frontend]);
+frontend(Atom) when is_atom(Atom) -> whereis(gs_frontend).
+
+obj_id({Id,_}) -> Id;
+obj_id(Atom) when is_atom(Atom) -> Atom.
+
+error(Format, Data) ->
+ io:format("gs error: "),
+ ok = io:format(Format, Data), % don't be quiet when Format is malformed
+ io:format("~n").
+
+creation_error(#gstkid{objtype=Ot}, {bad_result, BadResult}) ->
+ {error, {creation_error,Ot,BadResult}};
+creation_error(#gstkid{objtype=Ot}, BadResult) ->
+ {error, {creation_error,Ot,BadResult}}.
+
+
+create_tree(ParentId,[{Type,Name,Options,Children}|R]) ->
+ case create(Type,Name,ParentId,Options) of
+ {error,_Reason} -> {error,{create_tree,aborted_at,Type,Name}};
+ Id ->
+ case create_tree(Id,Children) of
+ ok -> create_tree(ParentId,R);
+ Err -> Err
+ end
+ end;
+create_tree(ParentId,[{Type,Name,Options}|R]) when is_atom(Name) ->
+ create_tree(ParentId,[{Type,Name,Options,[]}|R]);
+create_tree(ParentId,[{Type,Options,Children}|R]) ->
+ case create(Type,ParentId,Options) of
+ {error,_Reason} -> {error,{create_tree,aborted_at,Type,Options}};
+ Id ->
+ case create_tree(Id,Children) of
+ ok -> create_tree(ParentId,R);
+ Err -> Err
+ end
+ end;
+create_tree(ParentId,[{Type,Options}|R]) ->
+ create_tree(ParentId,[{Type,Options,[]}|R]);
+create_tree(ParentId,Tuple) when is_tuple(Tuple) ->
+ create_tree(ParentId,[Tuple]);
+create_tree(_,[]) ->
+ ok.
+
+
+window(ParentId) ->
+ create(window,ParentId,[]).
+window(ParentId,Options) ->
+ create(window,ParentId,Options).
+window(Name,ParentId,Options) ->
+ create(window,Name,ParentId,Options).
+
+button(ParentId) ->
+ create(button,ParentId,[]).
+button(ParentId,Options) ->
+ create(button,ParentId,Options).
+button(Name,ParentId,Options) ->
+ create(button,Name,ParentId,Options).
+
+checkbutton(ParentId) ->
+ create(checkbutton,ParentId,[]).
+checkbutton(ParentId,Options) ->
+ create(checkbutton,ParentId,Options).
+
+checkbutton(Name,ParentId,Options) ->
+ create(checkbutton,Name,ParentId,Options).
+
+radiobutton(ParentId) ->
+ create(radiobutton,ParentId,[]).
+radiobutton(ParentId,Options) ->
+ create(radiobutton,ParentId,Options).
+radiobutton(Name,ParentId,Options) ->
+ create(radiobutton,Name,ParentId,Options).
+
+frame(ParentId) ->
+ create(frame,ParentId,[]).
+frame(ParentId,Options) ->
+ create(frame,ParentId,Options).
+frame(Name,ParentId,Options) ->
+ create(frame,Name,ParentId,Options).
+
+canvas(ParentId) ->
+ create(canvas,ParentId,[]).
+canvas(ParentId,Options) ->
+ create(canvas,ParentId,Options).
+canvas(Name,ParentId,Options) ->
+ create(canvas,Name,ParentId,Options).
+
+label(ParentId) ->
+ create(label,ParentId,[]).
+label(ParentId,Options) ->
+ create(label,ParentId,Options).
+label(Name,ParentId,Options) ->
+ create(label,Name,ParentId,Options).
+
+message(ParentId) ->
+ create(message,ParentId,[]).
+message(ParentId,Options) ->
+ create(message,ParentId,Options).
+message(Name,ParentId,Options) ->
+ create(message,Name,ParentId,Options).
+
+listbox(ParentId) ->
+ create(listbox,ParentId,[]).
+listbox(ParentId,Options) ->
+ create(listbox,ParentId,Options).
+listbox(Name,ParentId,Options) ->
+ create(listbox,Name,ParentId,Options).
+
+entry(ParentId) ->
+ create(entry,ParentId,[]).
+entry(ParentId,Options) ->
+ create(entry,ParentId,Options).
+entry(Name,ParentId,Options) ->
+ create(entry,Name,ParentId,Options).
+
+scrollbar(ParentId) ->
+ create(scrollbar,ParentId,[]).
+scrollbar(ParentId,Options) ->
+ create(scrollbar,ParentId,Options).
+scrollbar(Name,ParentId,Options) ->
+ create(scrollbar,Name,ParentId,Options).
+
+scale(ParentId) ->
+ create(scale,ParentId,[]).
+scale(ParentId,Options) ->
+ create(scale,ParentId,Options).
+scale(Name,ParentId,Options) ->
+ create(scale,Name,ParentId,Options).
+
+editor(ParentId) ->
+ create(editor,ParentId,[]).
+editor(ParentId,Options) ->
+ create(editor,ParentId,Options).
+editor(Name,ParentId,Options) ->
+ create(editor,Name,ParentId,Options).
+
+prompter(ParentId) ->
+ create(prompter,ParentId,[]).
+prompter(ParentId,Options) ->
+ create(prompter,ParentId,Options).
+prompter(Name,ParentId,Options) ->
+ create(prompter,Name,ParentId,Options).
+
+line(ParentId) ->
+ create(line,ParentId,[]).
+line(ParentId,Options) ->
+ create(line,ParentId,Options).
+line(Name,ParentId,Options) ->
+ create(line,Name,ParentId,Options).
+
+oval(ParentId) ->
+ create(oval,ParentId,[]).
+oval(ParentId,Options) ->
+ create(oval,ParentId,Options).
+oval(Name,ParentId,Options) ->
+ create(oval,Name,ParentId,Options).
+
+rectangle(ParentId) ->
+ create(rectangle,ParentId,[]).
+rectangle(ParentId,Options) ->
+ create(rectangle,ParentId,Options).
+rectangle(Name,ParentId,Options) ->
+ create(rectangle,Name,ParentId,Options).
+
+polygon(ParentId) ->
+ create(polygon,ParentId,[]).
+polygon(ParentId,Options) ->
+ create(polygon,ParentId,Options).
+polygon(Name,ParentId,Options) ->
+ create(polygon,Name,ParentId,Options).
+
+text(ParentId) ->
+ create(text,ParentId,[]).
+text(ParentId,Options) ->
+ create(text,ParentId,Options).
+text(Name,ParentId,Options) ->
+ create(text,Name,ParentId,Options).
+
+image(ParentId) ->
+ create(image,ParentId,[]).
+image(ParentId,Options) ->
+ create(image,ParentId,Options).
+image(Name,ParentId,Options) ->
+ create(image,Name,ParentId,Options).
+
+arc(ParentId) ->
+ create(arc,ParentId,[]).
+arc(ParentId,Options) ->
+ create(arc,ParentId,Options).
+arc(Name,ParentId,Options) ->
+ create(arc,Name,ParentId,Options).
+
+menu(ParentId) ->
+ create(menu,ParentId,[]).
+menu(ParentId, Options) ->
+ create(menu,ParentId,Options).
+menu(Name,ParentId,Options) ->
+ create(menu,Name,ParentId,Options).
+
+menubutton(ParentId) ->
+ create(menubutton,ParentId,[]).
+menubutton(ParentId,Options) ->
+ create(menubutton,ParentId,Options).
+menubutton(Name,ParentId,Options) ->
+ create(menubutton,Name,ParentId,Options).
+
+menubar(ParentId) ->
+ create(menubar,ParentId,[]).
+menubar(ParentId,Options) ->
+ create(menubar,ParentId,Options).
+menubar(Name,ParentId,Options) ->
+ create(menubar,Name,ParentId,Options).
+
+menuitem(ParentId) ->
+ create(menuitem,ParentId,[]).
+menuitem(ParentId,Options) ->
+ create(menuitem,ParentId,Options).
+menuitem(Name,ParentId,Options) ->
+ create(menuitem,Name,ParentId,Options).
+
+grid(ParentId) ->
+ create(grid,ParentId,[]).
+grid(ParentId,Options) ->
+ create(grid,ParentId,Options).
+grid(Name,ParentId,Options) ->
+ create(grid,Name,ParentId,Options).
+
+gridline(ParentId) ->
+ create(gridline,ParentId,[]).
+gridline(ParentId,Options) ->
+ create(gridline,ParentId,Options).
+gridline(Name,ParentId,Options) ->
+ create(gridline,Name,ParentId,Options).
+
+%%----------------------------------------------------------------------
+%% Waiting for erl44
+%%----------------------------------------------------------------------
+foreach(F, ExtraArgs, [H | T]) ->
+ apply(F, [H | ExtraArgs]),
+ foreach(F, ExtraArgs, T);
+foreach(_F, _ExtraArgs, []) -> ok.
+
+%%----------------------------------------------------------------------
+%% ASSociation with eQual key (scheme standard)
+%%----------------------------------------------------------------------
+assq(Key, List) ->
+ case lists:keysearch(Key, 1, List) of
+ {value, {_, Val}} -> {value, Val};
+ _ -> false
+ end.
+
+%%----------------------------------------------------------------------
+%% When we need the whole pair.
+%%----------------------------------------------------------------------
+pair(Key, List) ->
+ case lists:keysearch(Key, 1, List) of
+ {value, Pair} -> Pair;
+ _ -> false
+ end.
+
+%%----------------------------------------------------------------------
+%% When we know there is a value
+%%----------------------------------------------------------------------
+val(Key, List) when is_list(List) ->
+ {value, {_,Val}} = lists:keysearch(Key, 1, List),
+ Val.
+
+val(Key,List,ElseVal) when is_list(List) ->
+ case lists:keysearch(Key, 1, List) of
+ {value, {_, Val}} -> Val;
+ _ -> ElseVal
+ end.
+
+%% ----------------------------------------
+%% done
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