aboutsummaryrefslogtreecommitdiffstats
path: root/lib/toolbar/src/canvasbutton.erl
diff options
context:
space:
mode:
Diffstat (limited to 'lib/toolbar/src/canvasbutton.erl')
-rw-r--r--lib/toolbar/src/canvasbutton.erl239
1 files changed, 0 insertions, 239 deletions
diff --git a/lib/toolbar/src/canvasbutton.erl b/lib/toolbar/src/canvasbutton.erl
deleted file mode 100644
index 81e0ed43bb..0000000000
--- a/lib/toolbar/src/canvasbutton.erl
+++ /dev/null
@@ -1,239 +0,0 @@
-%%
-%% %CopyrightBegin%
-%%
-%% Copyright Ericsson AB 1996-2012. 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%
-%%
--module(canvasbutton).
--compile([{nowarn_deprecated_function,{gs,config,2}},
- {nowarn_deprecated_function,{gs,create,3}},
- {nowarn_deprecated_function,{gs,read,2}}]).
-
-%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
-%
-% Erlang Toolbar
-%
-%%% Description %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
-%
-% Extension to GS used to imitate buttons but instead using images drawn
-% on a canvas. Enables usage of .gif files as button images and not only
-% .xbm (bitmap) files.
-%
-%%% Constants %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
-%
--define(gray,{87,87,87}).
-%
-%%% Internal data structures %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
-%
-% canvasbutton()
--record(canvasbutton,{image,rect,ul,ll}).
-%
-% cboptions()
--record(cboptions,
- {imagefile=nofile, % nofile |
- % string() Name of image file
- x=0, % integer() X coordinate relative the canvas
- y=0, % integer() Y coordinate relative the canvas
- width=10, % integer() Button width
- height=10, % integer() Button heigth
- fg=black, % atom() Foreground color
- data=[]}). % term() Data associated with button events
-%
-%%% Exports %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
-%
--export([create/1,create/2,read/2,press/1,release/1]).
-%
-%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
-
-%%% Exported functions %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
-
-%----------------------------------------
-% create(Canvas) => create(Canvas,[])
-% create(Canvas,OptionList) => canvasbutton()
-% Canvas - GS canvas object
-% OptionList - [{Option,Value}]
-% Option, Value - see below
-% Create a canvasbutton with the given image on Canvas
-%
-% Option Value Default Comment
-% ----------------------------------------------------------------
-% image nofile | nofile Name of image file. Must be a bitmap
-% string() file (.xbm) or a GIF file (.gif).
-% x integer() 0 X coordinate relative to Canvas
-% y integer() 0 Y coordinate relative to Canvas
-% width integer() 10 Button width
-% height integer() 10 Button height
-% fg atom() black Foreground color, bitmaps only
-% data term() [] Data associated with button events
-%
-% The process calling this function will receive the following events:
-% {gs,GsObj,enter,{canvasbutton,Canvasbutton,Data},Args}
-% {gs,GsObj,leave,{canvasbutton,Canvasbutton,Data},Args}
-% {gs,GsObj,buttonpress,{canvasbutton,Canvasbutton,Data},Args}
-% {gs,GsObj,buttonrelease,{canvasbutton,Canvasbutton,Data},Args}
-% where GsObj and Args are a GS object and its Args field, respectively.
-%
-% Note that press/1 and release/1 has to be called explicitly to create
-% the illusion of the button being pressed or released.
-%----------------------------------------
-create(Canvas) ->
- create(Canvas,[]).
-create(Canvas,OptionList) ->
- Options = sort_out_options(OptionList),
- X = Options#cboptions.x,
- Y = Options#cboptions.y,
- W = Options#cboptions.width,
- H = Options#cboptions.height,
-
- %% Buttons should have the same background color as the canvas
- Bg = gs:read(Canvas,bc),
-
- %% Draw image
- Image = create_image(Options#cboptions.imagefile,Canvas,Bg,
- Options#cboptions.fg,X,Y,W,H),
-
- %% Draw upper left corner line
- Ul = gs:create(line,Canvas,[{coords,[{X,Y+H},{X,Y},{X+W,Y}]},
- {fg,white},{width,2}]),
-
- %% Draw lower right corner line
- Ll = gs:create(line,Canvas,[{coords,[{X,Y+H},{X+W,Y+H},{X+W,Y}]},
- {fg,?gray},{width,2}]),
-
-
- %% Draw a rectangle around all (for event catching when width and
- %% height of button is larger than image)
- Rect = gs:create(rectangle,Canvas,[{coords,[{X,Y},{X+W,Y+H}]},
- {fill,Bg},
- {buttonpress,true},
- {buttonrelease,true},
- {enter,true},{leave,true}]),
-
- %% Now the canvas button is created
- Canvasbutton = #canvasbutton{image=Image,rect=Rect,ul=Ul,ll=Ll},
-
- Data = Options#cboptions.data,
- gs:config(Rect,{data,{canvasbutton,Canvasbutton,Data}}),
- gs:config(Image,{data,{canvasbutton,Canvasbutton,Data}}),
- gs:config(Rect,lower),
- gs:config(Image,raise),
-
- Canvasbutton.
-
-%----------------------------------------
-% read(Canvasbutton,coords) => [{L,T},{R,B}]
-% Canvasbutton - canvasbutton()
-% Read a Canvasbutton's coordinates
-%----------------------------------------
-read(Canvasbutton,coords) ->
- gs:read(Canvasbutton#canvasbutton.rect,coords).
-
-%----------------------------------------
-% press(Canvasbutton)
-% Canvasbutton - canvasbutton()
-% Create the illusion that Canvasbutton is pressed
-%----------------------------------------
-press(Canvasbutton) ->
- gs:config(Canvasbutton#canvasbutton.ul,{fg,?gray}),
- gs:config(Canvasbutton#canvasbutton.ll,{fg,white}),
- case Canvasbutton#canvasbutton.image of
- noimage ->
- ignore;
- Image ->
- gs:config(Image,{move,{-1,-1}})
- end.
-
-%----------------------------------------
-% release(Canvasbutton)
-% Canvasbutton - canvasbutton()
-% Create the illusion that Canvasbutton is released
-%----------------------------------------
-release(Canvasbutton) ->
- gs:config(Canvasbutton#canvasbutton.ul,{fg,white}),
- gs:config(Canvasbutton#canvasbutton.ll,{fg,?gray}),
- case Canvasbutton#canvasbutton.image of
- noimage ->
- ignore;
- Image ->
- gs:config(Image,{move,{1,1}})
- end.
-
-
-%%% Internal functions %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
-
-%----------------------------------------
-% create_image(ImageFile,Canvas,Bg,Fg,X,Y,W,H) => Image
-% ImageFile - string() Image file, must exist and be a bitmap file ending
-% with .xbm or a GIF file ending with .gif.
-% Canvas - GS canvas object
-% Bg - atom() Background color (bitmaps only)
-% Fg - atom() Foreground color (bitmaps only)
-% X, Y - int() X and Y coordinates for Image relative to Canvas
-% W, H - int() Width and height of Image
-% Image - GS canvas image object
-%----------------------------------------
-create_image(nofile,_,_,_,_,_,_,_) ->
- noimage;
-create_image(ImageFile,Canvas,Bg,Fg,X,Y,W,H) ->
- case lists:last(string:tokens(ImageFile,".")) of
- "xbm" ->
- gs:create(image,Canvas,
- [{bitmap,ImageFile},
- {bg,Bg},{fg,Fg},
- {anchor,c},
- {coords,[{X+1+W/2,Y+1+H/2}]},
- {buttonpress,true},
- {buttonrelease,true},
- {enter,true},{leave,true}]);
- "gif" ->
- gs:create(image,Canvas,
- [{load_gif,ImageFile},
- {anchor,c},
- {coords,[{X+W/2,Y+H/2}]},
- {buttonpress,true},
- {buttonrelease,true},
- {enter,true},{leave,true}])
- end.
-
-%----------------------------------------
-% sort_out_options(OptionList) => cboptions()
-% OptionList - see create/2
-% Insert members of option list into a cboptions record.
-%----------------------------------------
-sort_out_options(OptionList) ->
- sort_out_options(OptionList,#cboptions{}).
-
-%----------------------------------------
-% sort_out_options(OptionList,Options) => cboptions()
-% OptionList - see create/2
-% Options - cboptions()
-% Called by sort_out_options/1.
-%----------------------------------------
-sort_out_options([{image,Image}|Rest],Options) ->
- sort_out_options(Rest,Options#cboptions{imagefile=Image});
-sort_out_options([{x,X}|Rest],Options) ->
- sort_out_options(Rest,Options#cboptions{x=X});
-sort_out_options([{y,Y}|Rest],Options) ->
- sort_out_options(Rest,Options#cboptions{y=Y});
-sort_out_options([{width,Width}|Rest],Options) ->
- sort_out_options(Rest,Options#cboptions{width=Width});
-sort_out_options([{height,Height}|Rest],Options) ->
- sort_out_options(Rest,Options#cboptions{height=Height});
-sort_out_options([{fg,Fg}|Rest],Options) ->
- sort_out_options(Rest,Options#cboptions{fg=Fg});
-sort_out_options([{data,Data}|Rest],Options) ->
- sort_out_options(Rest,Options#cboptions{data=Data});
-sort_out_options([],Options) ->
- Options.
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-19 02:10:07 +0000