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author | Erlang/OTP <[email protected]> | 2009-11-20 14:54:40 +0000 |
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committer | Erlang/OTP <[email protected]> | 2009-11-20 14:54:40 +0000 |
commit | 84adefa331c4159d432d22840663c38f155cd4c1 (patch) | |
tree | bff9a9c66adda4df2106dfd0e5c053ab182a12bd /lib/gs/examples/color_demo.erl | |
download | otp-84adefa331c4159d432d22840663c38f155cd4c1.tar.gz otp-84adefa331c4159d432d22840663c38f155cd4c1.tar.bz2 otp-84adefa331c4159d432d22840663c38f155cd4c1.zip |
The R13B03 release.OTP_R13B03
Diffstat (limited to 'lib/gs/examples/color_demo.erl')
-rw-r--r-- | lib/gs/examples/color_demo.erl | 62 |
1 files changed, 62 insertions, 0 deletions
diff --git a/lib/gs/examples/color_demo.erl b/lib/gs/examples/color_demo.erl new file mode 100644 index 0000000000..650f853061 --- /dev/null +++ b/lib/gs/examples/color_demo.erl @@ -0,0 +1,62 @@ +%% +%% %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 demo for choosing +%% colors in a window. +%% ------------------------------------------------------------ + +-module(color_demo). + +-export([start/0,init/0]). + +start() -> + spawn(color_demo,init,[]). + +init() -> + I= gs:start(), + W= gs:window(I,[{title,"Color Demo"},{width,300},{height,195}]), + B=gs:button(W,[{label,{text,"Quit"}},{x,261},{y,166},{width,40}]), + gs:config(B,[{bg,yellow},{fg,hotpink1},{data,quit}]), + gs:scale(W,[{text,"Red"},{y,0},{range,{0,255}},{orient,horizontal}, + {height,65},{data,red},{pos,42}]), + gs:scale(W,[{text,"Blue"},{y,65},{range,{0,255}},{orient,horizontal}, + {height,65},{data,blue},{pos,42}]), + gs:scale(W,[{text,"Green"},{y,130},{range,{0,255}},{orient,horizontal}, + {height,65},{data,green},{pos,42}]), + gs:config(W,{map,true}), + loop(W,0,0,0). + +loop(W,R,G,B) -> + gs:config(W,{bg,{R,G,B}}), + receive + {gs,_,click,red,[New_R|_]} -> + loop(W,New_R,G,B); + {gs,_,click,green,[New_G|_]} -> + loop(W,R,New_G,B); + {gs,_,click,blue,[New_B|_]} -> + loop(W,R,G,New_B); + {gs,_,click,quit,_} -> + true; + {gs,W,destroy,_,_} -> + true + end. + +%% ------------------------------------------------------------ |