The R13B03 release.OTP_R13B03

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.
+
+%% ------------------------------------------------------------