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authorSverker Eriksson <[email protected]>2017-08-30 21:00:35 +0200
committerSverker Eriksson <[email protected]>2017-08-30 21:00:35 +0200
commit44a83c8860bbd00878c720a7b9d940b4630bab8a (patch)
tree101b3c52ec505a94f56c8f70e078ecb8a2e8c6cd /lib/gs/examples/line_demo.erl
parent7c67bbddb53c364086f66260701bc54a61c9659c (diff)
parent040bdce67f88d833bfb59adae130a4ffb4c180f0 (diff)
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Merge tag 'OTP-20.0' into sverker/20/binary_to_atom-utf8-crash/ERL-474/OTP-14590
Diffstat (limited to 'lib/gs/examples/line_demo.erl')
-rw-r--r--lib/gs/examples/line_demo.erl82
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diff --git a/lib/gs/examples/line_demo.erl b/lib/gs/examples/line_demo.erl
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--- a/lib/gs/examples/line_demo.erl
+++ /dev/null
@@ -1,82 +0,0 @@
-%%
-%% %CopyrightBegin%
-%%
-%% Copyright Ericsson AB 1996-2016. All Rights Reserved.
-%%
-%% Licensed under the Apache License, Version 2.0 (the "License");
-%% you may not use this file except in compliance with the License.
-%% You may obtain a copy of the License at
-%%
-%% http://www.apache.org/licenses/LICENSE-2.0
-%%
-%% Unless required by applicable law or agreed to in writing, software
-%% distributed under the License is distributed on an "AS IS" BASIS,
-%% WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-%% See the License for the specific language governing permissions and
-%% limitations under the License.
-%%
-%% %CopyrightEnd%
-%%
-
-%%
-%% ------------------------------------------------------------
-%% A simple demo showing a line
-%% bouncing within a window.
-%% ------------------------------------------------------------
-
--module(line_demo).
--compile([{nowarn_deprecated_function,{gs,button,2}},
- {nowarn_deprecated_function,{gs,canvas,2}},
- {nowarn_deprecated_function,{gs,config,2}},
- {nowarn_deprecated_function,{gs,line,2}},
- {nowarn_deprecated_function,{gs,start,0}},
- {nowarn_deprecated_function,{gs,window,2}}]).
-
--export([start/0,init/0,line/3]).
-
-start() ->
- spawn(line_demo,init,[]).
-
-init() ->
- I= gs:start(),
- W= gs:window(I,[{title,"Line Demo"},{width,300},{height,300},{map,true}]),
- C= gs:canvas(W,[{width,300},{height,300},{bg,blue}]),
- gs:button(W,[{label,{text,"Quit"}},{width,40},{bg,yellow}]),
- Line2 = gs:line(C,[{coords,[{0,0},{50,50}]},{fg,white},{width,3}]),
- line(Line2,{100,100,9.5,5},{0,0,-6,-8.4}).
-
-
-
-line(Line,{X1,Y1,DX1,DY1},{X2,Y2,DX2,DY2}) ->
- {NX1,NDX1} = cc(X1,DX1),
- {NY1,NDY1} = cc(Y1,DY1),
- {NX2,NDX2} = cc(X2,DX2),
- {NY2,NDY2} = cc(Y2,DY2),
- gs:config(Line,{coords,[{NX1,NY1},{NX2,NY2}]}),
- receive
- {gs,_,click,_,_} -> exit(normal);
- {gs,_,destroy,_,_} -> exit(normal)
- after 50 ->
- true
- end,
- line(Line,{NX1,NY1,NDX1,NDY1},{NX2,NY2,NDX2,NDY2}).
-
-cc(X,DX) ->
- if
- DX>0 ->
- if
- X<300 ->
- {X+DX,DX};
- x>=300 ->
- {X-DX,-DX}
- end;
- DX<0 ->
- if
- X>0 ->
- {X+DX,DX};
- X=<0 ->
- {X-DX,-DX}
- end
- end.
-
-%% ------------------------------------------------------------