%%
%% %CopyrightBegin%
%%
%% Copyright Ericsson AB 2009-2013. 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%
%% This is example of the widgets and usage of wxErlang
%% Hopefully it will contain all implemented widgets, it's event handling
%% and some tutorials of how to use sizers and other stuff.
-module(ex_button).
-include_lib("wx/include/wx.hrl").
-behaviour(wx_object).
-export([start/1, init/1,
terminate/2, code_change/3,
handle_info/2, handle_call/3, handle_cast/2, handle_event/2]).
-record(state,
{
parent,
config
}).
start(Config) ->
wx_object:start_link(?MODULE, Config, []).
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
init(Config) ->
wx:batch(fun() -> do_init(Config) end).
do_init(Config) ->
Parent = proplists:get_value(parent, Config),
Panel = wxScrolledWindow:new(Parent),
%% Setup sizers
Sz = wxBoxSizer:new(?wxVERTICAL),
ButtSz = wxStaticBoxSizer:new(?wxHORIZONTAL, Panel,
[{label, "wxButton"}]),
AlignSz = wxStaticBoxSizer:new(?wxHORIZONTAL, Panel,
[{label, "Alignment Style"}]),
OtherSz = wxStaticBoxSizer:new(?wxHORIZONTAL, Panel,
[{label, "Other Styles"}]),
StockTopSz = wxStaticBoxSizer:new(?wxHORIZONTAL, Panel,
[{label, "Stock Buttons"}]),
B10 = wxButton:new(Panel, 10, [{label,"Normal"}]),
wxButton:setToolTip(B10, "Normal button with (default) centered label"),
B11 = wxToggleButton:new(Panel, 11, "Toggle Button"),
wxToggleButton:connect(B11, command_togglebutton_clicked),
wxButton:setToolTip(B11, "A toggle button"),
B12 = wxButton:new(Panel, 12, [{label,"Default"}]),
wxButton:setDefault(B12),
wxButton:setToolTip(B12, "Normal button set to be the default button"),
B13 = wxButton:new(Panel, 13, [{label,"Disabled"}]),
wxButton:disable(B13),
wxButton:setToolTip(B13, "Disabled Normal button"),
B14 = wxBitmapButton:new(Panel, 14, create_bitmap("A bitmap button")),
wxButton:setToolTip(B14, "A Bitmap button"),
%% Alignment and NO_BORDER only works on Win and GTK
%% according to docs.
B20 = wxButton:new(Panel, 20, [{label,"Left Aligned"},
{size, {100, -1}},
{style,?wxBU_LEFT}]),
wxButton:setToolTip(B20, "Normal button with left aligned label"),
B21 = wxButton:new(Panel, 21, [{label,"Top Aligned"},
{size, {-1, 50}},
{style,?wxBU_TOP}]),
wxButton:setToolTip(B21, "Normal button with top aligned label"),
B22 = wxButton:new(Panel, 22, [{label,"Lower Right Aligned"},
{size, {150, 50}},
{style,?wxBU_BOTTOM bor ?wxBU_RIGHT}]),
wxButton:setToolTip(B22, "Normal button with top right aligned label"),
%% Other types
B30 = wxButton:new(Panel, 30, [{label,"Flat Style"},
{style, ?wxNO_BORDER}]),
wxButton:setToolTip(B30, "Flat style button, on some OS'es"),
B31 = wxButton:new(Panel, 31, [{label,"Exact Fit"},
{style, ?wxBU_EXACTFIT}]),
wxButton:setToolTip(B31, "Minimal Size button"),
%% Stock Buttons
StockButts = [wxButton:new(Panel, Id) || Id <- stock_buttons()],
StockSz = wxGridSizer:new(0,5,3,3),
SzFlags = [{proportion, 0}, {border, 4}, {flag, ?wxALL}],
Expand = [{proportion, 0}, {border, 4}, {flag, ?wxALL bor
?wxEXPAND}],
[wxSizer:add(ButtSz, Button, SzFlags) ||
Button <- [B10, B11, B12, B13, B14]],
[wxSizer:add(AlignSz, Button, SzFlags) || Button <- [B20,B21,B22]],
[wxSizer:add(OtherSz, Button, SzFlags) || Button <- [B30,B31]],
[wxSizer:add(StockSz, Butt, SzFlags) || Butt <- StockButts],
wxSizer:add(StockTopSz, StockSz, SzFlags),
[wxSizer:add(Sz, Button, Flag) ||
{Button, Flag} <- [{ButtSz,SzFlags},{AlignSz,Expand},
{OtherSz,Expand}, {StockTopSz, Expand}]],
wxWindow:connect(Panel, command_button_clicked),
wxWindow:setSizer(Panel, Sz),
wxSizer:layout(Sz),
wxWindow:refresh(Panel),
wxScrolledWindow:setScrollRate(Panel, 5, 5),
{Panel, #state{parent=Panel, config=Config}}.
%%%%%%%%%%%%
%% Async Events are handled in handle_event as in handle_info
handle_event(#wx{id=Id, event=#wxCommand{type=command_button_clicked}},
State = #state{parent=Parent}) ->
B0 = wxWindow:findWindowById(Id, [{parent, Parent}]),
Butt = wx:typeCast(B0, wxButton),
Label = wxButton:getLabel(Butt),
demo:format(State#state.config,"Button: \'~ts\' clicked~n",[Label]),
{noreply,State};
handle_event(#wx{event=#wxCommand{type=command_togglebutton_clicked}},
State = #state{}) ->
demo:format(State#state.config,
"Button: You toggled the 'Toggle button' ~n",[]),
{noreply,State};
handle_event(Ev = #wx{}, State = #state{}) ->
demo:format(State#state.config,"Got Event ~p~n",[Ev]),
{noreply,State}.
%% Callbacks handled as normal gen_server callbacks
handle_info(Msg, State) ->
demo:format(State#state.config, "Got Info ~p~n",[Msg]),
{noreply,State}.
handle_call(shutdown, _From, State=#state{parent=Panel}) ->
wxPanel:destroy(Panel),
{stop, normal, ok, State};
handle_call(Msg, _From, State) ->
demo:format(State#state.config,"Got Call ~p~n",[Msg]),
{reply,ok,State}.
handle_cast(Msg, State) ->
io:format("Got cast ~p~n",[Msg]),
{noreply,State}.
code_change(_, _, State) ->
{stop, ignore, State}.
terminate(_Reason, _) ->
ok.
%%%%% a copy from wxwidgets samples.
create_bitmap(Label) ->
Bmp = wxBitmap:new(140, 30),
DC = wxMemoryDC:new(),
wxMemoryDC:selectObject(DC, Bmp),
wxDC:setBackground(DC, ?wxWHITE_BRUSH),
wxDC:clear(DC),
wxDC:setTextForeground(DC, ?wxBLUE),
wxDC:drawLabel(DC, Label, {5,5,130,20}, [{alignment, ?wxALIGN_CENTER}]),
wxMemoryDC:destroy(DC),
Bmp.
stock_buttons() ->
[?wxID_ABOUT,
?wxID_ADD,
?wxID_APPLY,
?wxID_BOLD,
?wxID_CANCEL,
?wxID_CLEAR,
?wxID_CLOSE,
?wxID_COPY,
?wxID_CUT,
?wxID_DELETE,
?wxID_EDIT,
?wxID_FIND,
?wxID_FILE,
?wxID_REPLACE,
?wxID_BACKWARD,
?wxID_DOWN,
?wxID_FORWARD,
?wxID_UP,
?wxID_HELP,
?wxID_HOME,
?wxID_INDENT,
?wxID_INDEX,
?wxID_ITALIC,
?wxID_JUSTIFY_CENTER,
?wxID_JUSTIFY_FILL,
?wxID_JUSTIFY_LEFT,
?wxID_JUSTIFY_RIGHT,
?wxID_NEW,
?wxID_NO,
?wxID_OK,
?wxID_OPEN,
?wxID_PASTE,
?wxID_PREFERENCES,
?wxID_PRINT,
?wxID_PREVIEW,
?wxID_PROPERTIES,
?wxID_EXIT,
?wxID_REDO,
?wxID_REFRESH,
?wxID_REMOVE,
?wxID_REVERT_TO_SAVED,
?wxID_SAVE,
?wxID_SAVEAS,
?wxID_SELECTALL,
?wxID_STOP,
?wxID_UNDELETE,
?wxID_UNDERLINE,
?wxID_UNDO,
?wxID_UNINDENT,
?wxID_YES,
?wxID_ZOOM_100,
?wxID_ZOOM_FIT,
?wxID_ZOOM_IN,
?wxID_ZOOM_OUT].
