The R13B03 release.OTP_R13B03

1 files changed, 108 insertions, 0 deletions

diff --git a/lib/gs/examples/calc.erl b/lib/gs/examples/calc.erl
new file mode 100644
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+++ b/lib/gs/examples/calc.erl
@@ -0,0 +1,108 @@
+%%
+%% %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%
+%%
+
+%%
+%% ------------------------------------------------------------
+%% A Simple Calculator demo in Erlang
+%% ------------------------------------------------------------
+
+-module(calc).
+
+-export([start/0,calc/0]).
+
+start() ->
+    spawn(calc,calc,[]).
+
+calc() ->
+    I = gs:start(),
+    Win = gs:window(I,[{title,"Calc1"},{width,120},{height,150}]),
+    Label = gs:label(Win,[{label,{text,"0"}},{width,120}]),
+    B1 = gs:button(Win,[{label,{text,"1"}},{width,30},{x,0},{y,30}]),
+    B2 = gs:button(Win,[{label,{text,"2"}},{width,30},{x,30},{y,30}]),
+    B3 = gs:button(Win,[{label,{text,"3"}},{width,30},{x,60},{y,30}]),
+    B4 = gs:button(Win,[{label,{text,"4"}},{width,30},{x,0},{y,60}]),
+    B5 = gs:button(Win,[{label,{text,"5"}},{width,30},{x,30},{y,60}]),
+    B6 = gs:button(Win,[{label,{text,"6"}},{width,30},{x,60},{y,60}]),
+    B7 = gs:button(Win,[{label,{text,"7"}},{width,30},{x,0},{y,90}]),
+    B8 = gs:button(Win,[{label,{text,"8"}},{width,30},{x,30},{y,90}]),
+    B9 = gs:button(Win,[{label,{text,"9"}},{width,30},{x,60},{y,90}]),
+    B0 = gs:button(Win,[{label,{text,"0"}},{width,60},{x,0},{y,120}]),
+    C = gs:button(Win,[{label,{text,"C"}},{width,30},{x,60},{y,120}]),
+    AC = gs:button(Win,[{label,{text,"AC"}},{width,30},{x,90},{y,120},{fg,red}]),
+    Plus = gs:button(Win,[{label,{text,"+"}},{width,30},{x,90},{y,30}]),
+    Times = gs:button(Win,[{label,{text,"*"}},{width,30},{x,90},{y,60}]),
+    Minus = gs:button(Win,[{label,{text,"-"}},{width,30},{x,90},{y,90}]),
+    gs:config(Win,{map,true}),
+    Ids = [Label,B0,B1,B2,B3,B4,B5,B6,B7,B8,B9,Minus,Plus,Times,C,AC],
+    calc_loop(Ids,0,0,'+').
+
+calc_loop(Ids,M,V,Op) ->
+    [_Label,B0,B1,B2,B3,B4,B5,B6,B7,B8,B9,Minus,Plus,Times,C,AC] = Ids,
+    receive
+	{gs,B0,click,_,_} -> digit_press(Ids,M,V*10+0,Op);
+	{gs,B1,click,_,_} -> digit_press(Ids,M,V*10+1,Op);
+	{gs,B2,click,_,_} -> digit_press(Ids,M,V*10+2,Op);
+	{gs,B3,click,_,_} -> digit_press(Ids,M,V*10+3,Op);
+	{gs,B4,click,_,_} -> digit_press(Ids,M,V*10+4,Op);
+	{gs,B5,click,_,_} -> digit_press(Ids,M,V*10+5,Op);
+	{gs,B6,click,_,_} -> digit_press(Ids,M,V*10+6,Op);
+	{gs,B7,click,_,_} -> digit_press(Ids,M,V*10+7,Op);
+	{gs,B8,click,_,_} -> digit_press(Ids,M,V*10+8,Op);
+	{gs,B9,click,_,_} -> digit_press(Ids,M,V*10+9,Op);
+	{gs,Minus,click,_,_} -> calc(Ids,Op,M,V,'-');
+	{gs,Plus,click,_,_} ->  calc(Ids,Op,M,V,'+');
+	{gs,Times,click,_,_} -> calc(Ids,Op,M,V,'*');
+	{gs,AC,click,_,_} -> ac(Ids,M,V,Op);
+	{gs,C,click,_,_} -> c(Ids,M,V,Op);
+	{gs,_,destroy,_,_} -> exit(normal);
+	_Other -> calc_loop(Ids,M,V,Op)
+    end.
+
+digit_press(Ids,M,V,Op) ->
+    [Label|_]=Ids,
+    gs:config(Label,[{label,{text,V}}]),
+    calc_loop(Ids,M,V,Op).
+
+calc(Ids,'+',M,V,Op) ->
+    NewM = M + V,
+    [Label|_]=Ids,
+    gs:config(Label,[{label,{text,NewM}}]),
+    calc_loop(Ids,NewM,0,Op);
+calc(Ids,'-',M,V,Op) ->
+    NewM = M - V,
+    [Label|_]=Ids,
+    gs:config(Label,[{label,{text,NewM}}]),
+    calc_loop(Ids,NewM,0,Op);
+calc(Ids,'*',M,V,Op) ->
+    NewM = M * V,
+    [Label|_]=Ids,
+    gs:config(Label,[{label,{text,NewM}}]),
+    calc_loop(Ids,NewM,0,Op).
+
+c(Ids,M,_V,Op) ->
+    [Label|_]=Ids,
+    gs:config(Label,[{label,{text,0}}]),
+    calc_loop(Ids,M,0,Op).
+
+ac(Ids,_M,_V,_Op) ->
+    [Label|_]=Ids,
+    gs:config(Label,[{label,{text,0}}]),
+    calc_loop(Ids,0,0,'+').
+
+%% ------------------------------------------------------------