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Diffstat (limited to 'lib/gs/src/gstk_arc.erl')
| -rw-r--r-- | lib/gs/src/gstk_arc.erl | 190 |
1 files changed, 190 insertions, 0 deletions
diff --git a/lib/gs/src/gstk_arc.erl b/lib/gs/src/gstk_arc.erl new file mode 100644 index 0000000000..8e80ef92b5 --- /dev/null +++ b/lib/gs/src/gstk_arc.erl @@ -0,0 +1,190 @@ +%% +%% %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). + +%%----------------------------------------------------------------------------- +%% 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 ----- |