%%
%% %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%
%%
%%
%% ------------------------------------------------------------
%% Basic Arc Type
%% ------------------------------------------------------------
-module(gstk_arc).
-compile([{nowarn_deprecated_function,{gs,creation_error,2}}]).
%%-----------------------------------------------------------------------------
%% ARC OPTIONS
%%
%% Attributes:
%% bw Int
%% coords [{X1,Y1}, {X2,Y2}]
%% data Data
%% extent Degrees
%% fg Color
%% fill Color
%% start Degrees
%% stipple Bool
%% style pieslice, chord, arc
%%
%% Commands:
%% lower
%% move {Dx, Dy}
%% raise
%% scale {Xo, Yo, Sx, Sy}
%% setfocus Bool
%%
%% Events:
%% buttonpress [Bool | {Bool, Data}]
%% buttonrelease [Bool | {Bool, Data}]
%% enter [Bool | {Bool, Data}]
%% keypress [Bool | {Bool, Data}]
%% keyrelease [Bool | {Bool, Data}]
%% leave [Bool | {Bool, Data}]
%% motion [Bool | {Bool, Data}]
%%
%% Read Options:
%% children
%% id
%% parent
%% type
%%
-export([create/3, config/3, read/3, delete/2, destroy/3, event/5,
option/5,read_option/5]).
-include("gstk.hrl").
%%-----------------------------------------------------------------------------
%% MANDATORY INTERFACE FUNCTIONS
%%-----------------------------------------------------------------------------
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%% Function : create/7
%% Purpose : Create a widget of the type defined in this module.
%% Args : DB - The Database
%% Objmod - An atom, this module
%% Objtype - An atom, the logical widget type
%% Owner - Pid of the creator
%% Name - An atom naming the widget
%% Parent - Gsid of the parent
%% Opts - A list of options for configuring the widget
%%
%% Return : [Gsid_of_new_widget | {bad_result, Reason}]
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
create(DB, GstkId, Opts) ->
case gstk_canvas:pickout_coords(Opts, [],GstkId#gstkid.objtype,2) of
{error, Error} ->
gs:creation_error(GstkId,Error);
{Coords, NewOpts} ->
Ngstkid=gstk_canvas:upd_gstkid(DB, GstkId, Opts),
#gstkid{widget=CanvasTkW}=Ngstkid,
MCmd = [CanvasTkW, " create ar ", Coords],
gstk_canvas:mk_cmd_and_call(NewOpts,Ngstkid,CanvasTkW,MCmd,DB)
end.
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%% Function : config/3
%% Purpose : Configure a widget of the type defined in this module.
%% Args : DB - The Database
%% Gstkid - The gstkid of the widget
%% Opts - A list of options for configuring the widget
%%
%% Return : [true | {bad_result, Reason}]
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
config(DB, Gstkid, Opts) ->
gstk_canvas:item_config(DB, Gstkid, Opts).
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%% Function : read/3
%% Purpose : Read one option from a widget
%% Args : DB - The Database
%% Gstkid - The gstkid of the widget
%% Opt - An option to read
%%
%% Return : [OptionValue | {bad_result, Reason}]
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
read(DB, Gstkid, Opt) ->
Item = Gstkid#gstkid.widget_data,
gstk_generic:read_option(DB,Gstkid,Opt,[gstk:to_ascii(Item)]).
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%% Function : delete/2
%% Purpose : Delete widget from databas and return tkwidget to destroy
%% Args : DB - The Database
%% Gstkid - The gstkid of the widget
%%
%% Return : TkWidget to destroy | {Parent, Objmod, Args}.
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
delete(DB, Gstkid) ->
gstk_canvas:item_delete_impl(DB,Gstkid).
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%% Function : destroy/3
%% Purpose : Destroy a widget
%% Args : DB - The Database
%% Canvas - The canvas tk widget
%% Item - The item number to destroy
%%
%% Return : [true | {bad_result, Reason}]
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
destroy(_DB, Canvas, Item) ->
gstk:exec([Canvas, " delete ", gstk:to_ascii(Item)]).
event(DB, Gstkid, Etype, Edata, Args) ->
gstk_generic:event(DB, Gstkid, Etype, Edata, Args).
%%------------------------------------------------------------------------------
%% MANDATORY FUNCTIONS
%%------------------------------------------------------------------------------
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%% Function : option/5
%% Purpose : Take care of options
%% Args : MainW - The main tk-widget
%% Canvas - The canvas tk-widget
%% Return : A tuple {OptionType, OptionCmd}
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
option(Option, _Gstkid, _Canvas, _DB, _AItem) ->
case Option of
{bw, Int} -> {s, [" -w ", gstk:to_ascii(Int)]};
{extent, Degrees} -> {s, [" -e ", gstk:to_ascii(Degrees)]};
{fg, Color} -> {s, [" -outline ", gstk:to_color(Color)]};
{start, Degrees} -> {s, [" -start ", gstk:to_ascii(Degrees)]};
{style, Style} -> {s, [" -sty ", gstk:to_ascii(Style)]};
_ -> invalid_option
end.
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%% Function : read_option/5
%% Purpose : Take care of a read option
%% Return : The value of the option or invalid_option
%% [OptionValue | {bad_result, Reason}]
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
read_option(Option, Gstkid, Canvas, _DB, AItem) ->
case Option of
bw -> tcl2erl:ret_int([Canvas, " itemcg ", AItem, " -w"]);
extent -> tcl2erl:ret_int([Canvas, " itemcg ", AItem, " -e"]);
fg -> tcl2erl:ret_color([Canvas, " itemcg ", AItem, " -outline"]);
start -> tcl2erl:ret_int([Canvas, " itemcg ", AItem, " -start"]);
stipple -> tcl2erl:ret_stipple([Canvas, " itemcg ", AItem, " -sti"]);
style -> tcl2erl:ret_atom([Canvas, " itemcg ", AItem, " -sty"]);
_ -> {bad_result, {Gstkid#gstkid.objtype, invalid_option, Option}}
end.
%% ----- Done -----
