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Diffstat (limited to 'lib/gs/src/gstk_polygon.erl')
| -rw-r--r-- | lib/gs/src/gstk_polygon.erl | 195 |
1 files changed, 195 insertions, 0 deletions
diff --git a/lib/gs/src/gstk_polygon.erl b/lib/gs/src/gstk_polygon.erl new file mode 100644 index 0000000000..83d032901f --- /dev/null +++ b/lib/gs/src/gstk_polygon.erl @@ -0,0 +1,195 @@ +%% +%% %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 Polygon Type +%% ------------------------------------------------------------ + +-module(gstk_polygon). + + +%%----------------------------------------------------------------------------- +%% POLYGON OPTIONS +%% +%% Attributes: +%% bw Int +%% coords [{X1,Y1}, {X2,Y2} | {Xn,Yn}] +%% data Data +%% fg Color +%% fill Color +%% smooth Bool +%% splinesteps Int +%% stipple Bool +%% +%% 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. +%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% +create(DB, Gstkid, Opts) -> + case pickout_coords(Opts, []) of + {error, Error} -> + {bad_result, Error}; + {Coords, NewOpts} -> + Ngstkid=gstk_canvas:upd_gstkid(DB, Gstkid, Opts), + #gstkid{widget=CanvasTkW}=Ngstkid, + MCmd = [CanvasTkW, " create po ", 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. +%% 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 : Option - An option tuple +%% Gstkid - The gstkid of the widget +%% MainW - The main tk-widget +%% Canvas - The canvas tk-widget +%% DB - The Database +%% +%% Return : A tuple {OptionType, OptionCmd} +%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% +option(Option, _Gstkid, _Canvas, _DB, _AItem) -> + case Option of + {fg, Color} -> {s, [" -outline ", gstk:to_color(Color)]}; + {bw, Int} -> {s, [" -w ", gstk:to_ascii(Int)]}; + {smooth, Bool} -> {s, [" -sm ", gstk:to_ascii(Bool)]}; + {splinesteps, Int} -> {s, [" -sp ", gstk:to_ascii(Int)]}; + _ -> 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"]); + fg -> + tcl2erl:ret_color([Canvas, " itemcg ", AItem, " -outline"]); + smooth -> tcl2erl:ret_bool([Canvas, " itemcg ", AItem, " -sm"]); + splinesteps -> tcl2erl:ret_int([Canvas, " itemcg ", AItem, " -sp"]); + stipple -> + tcl2erl:ret_stipple([Canvas," itemcg ",AItem," -stipple"]); + + _ -> {bad_result, {Gstkid#gstkid.objtype, invalid_option, Option}} + end. + +%%----------------------------------------------------------------------------- +%% PRIMITIVES +%%----------------------------------------------------------------------------- + +pickout_coords([{coords,Coords} | Rest], Opts) when length(Coords) >= 2 -> + case gstk_canvas:coords(Coords) of + invalid -> + {error, "A polygon must have at least four coordinates"}; + RealCoords -> + {RealCoords, lists:append(Rest, Opts)} + end; +pickout_coords([Opt | Rest], Opts) -> + pickout_coords(Rest, [Opt|Opts]); +pickout_coords([], _Opts) -> + {error, "A polygon must have at least four coordinates"}. +%% ----- Done ----- + |