diff options
Diffstat (limited to 'lib/wx/examples/demo/ex_gauge.erl')
| -rw-r--r-- | lib/wx/examples/demo/ex_gauge.erl | 208 |
1 files changed, 208 insertions, 0 deletions
diff --git a/lib/wx/examples/demo/ex_gauge.erl b/lib/wx/examples/demo/ex_gauge.erl new file mode 100644 index 0000000000..d30c3fea58 --- /dev/null +++ b/lib/wx/examples/demo/ex_gauge.erl @@ -0,0 +1,208 @@ +%% +%% %CopyrightBegin% +%% +%% Copyright Ericsson AB 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% + +-module(ex_gauge). + +-behaviour(wx_object). + +-include_lib("wx/include/wx.hrl"). + +-export([start/1, init/1, terminate/2, code_change/3, + handle_info/2, handle_call/3, handle_event/2]). + +-record(gauge, {obj, + value, + timer, + range + }). + +-record(state, + { + parent, + config, + normal_gauge, + undeterminate_gauge, + simulate_button, + simulate_undet_button + }). + +-define(ID_START_STOP, 1). +-define(ID_START_STOP_UNDET, 2). +-define(SET_VALUE, 3). +-define(VERTICAL, 4). + +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 = wxPanel:new(Parent, []), + + %% Setup sizers + MainSizer = wxBoxSizer:new(?wxVERTICAL), + AlignSizer = wxStaticBoxSizer:new(?wxVERTICAL, Panel, + [{label, "wxGauge"}]), + + %% Create two horizontal gauges with range 0-100 + Range = 100, + NormalGauge = wxGauge:new(Panel, 1, Range, [{size, {200, -1}}, + {style, ?wxGA_HORIZONTAL}]), + UndetGauge = wxGauge:new(Panel, 2, Range, [{size, {200, -1}}, + {style, ?wxGA_HORIZONTAL}]), + + %% Add to sizers + wxSizer:add(AlignSizer, NormalGauge, [{flag, ?wxEXPAND}]), + wxSizer:add(AlignSizer, UndetGauge, [{flag, ?wxEXPAND}]), + {OptSizer, SimulateButton, SimulateUndetermButton} + = create_option_sizer(Panel), + + wxSizer:add(MainSizer, AlignSizer, [{flag, ?wxEXPAND}]), + wxSizer:add(MainSizer, OptSizer, []), + + wxWindow:connect(Panel, command_togglebutton_clicked), + wxWindow:connect(Panel, command_button_clicked), + + wxPanel:setSizer(Panel, MainSizer), + {Panel, #state{parent=Panel, config=Config, + normal_gauge = #gauge{obj=NormalGauge, value = 0, + range = Range}, + undeterminate_gauge = #gauge{obj=UndetGauge, value = 0, + range = Range}, + simulate_button = SimulateButton, + simulate_undet_button = SimulateUndetermButton}}. + +%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% +%% Callbacks handled as normal gen_server callbacks +handle_info(tick, State=#state{normal_gauge = Gauge=#gauge{obj = Obj, + value = Value, + timer = Timer, + range = Range}, + simulate_button = Button}) -> + Timer2 = + if Value >= Range -> + wxToggleButton:setValue(Button, false), + wxToggleButton:setLabel(Button, "Simulate load"), + wxGauge:setValue(Obj, Range), + demo:format(State#state.config, "Simulation finished.\n", []), + Timer; + true -> + simulate_load(Obj, Value) + + end, + {noreply, State#state{normal_gauge = Gauge#gauge{value = Value+5, + timer = Timer2}}}; +handle_info(pulse, State=#state{undeterminate_gauge = Gauge=#gauge{obj = Obj}}) -> + wxGauge:pulse(Obj), + Timer = erlang:send_after(300, self(), pulse), + {noreply, State#state{undeterminate_gauge = Gauge#gauge{timer = Timer}}}. + +handle_call(Msg, _From, State) -> + demo:format(State#state.config,"Got Call ~p\n",[Msg]), + {reply,ok, State}. + +%% Async Events are handled in handle_event as in handle_info +handle_event(#wx{id = ?ID_START_STOP, + event = #wxCommand{type = command_togglebutton_clicked, + commandInt = Int}}, + State = #state{normal_gauge = #gauge{obj=Gauge, + value = Value, + timer = Timer}, + simulate_button = Button}) -> + case Int of + 1 -> + wxToggleButton:setLabel(Button, "Stop simulation"), + simulate_load(Gauge, Value); + 0 -> + erlang:cancel_timer(Timer), + wxToggleButton:setLabel(Button, "Simulate load"), + ok + end, + {noreply, State}; +handle_event(#wx{id = ?ID_START_STOP_UNDET, + event = #wxCommand{type = command_togglebutton_clicked, + commandInt = Int}}, + State = #state{undeterminate_gauge = G = #gauge{obj=Gauge, + timer = Timer}, + simulate_undet_button = Button}) -> + Timer2 = + case Int of + 1 -> + wxToggleButton:setLabel(Button, "Stop simulation"), + wxGauge:pulse(Gauge), + erlang:send_after(300, self(), pulse); + 0 -> + wxToggleButton:setLabel(Button, "Simulate undeterminate load"), + reset(G), + undefined + end, + case Timer of + undefined -> ok; + _ -> erlang:cancel_timer(Timer) + end, + {noreply, State#state{undeterminate_gauge = G#gauge{timer = Timer2}}}; +handle_event(#wx{id = ?wxID_CLEAR, + event = #wxCommand{type = command_button_clicked}}, + State = #state{normal_gauge = Gauge, + undeterminate_gauge = Gauge2}) -> + reset(Gauge), + reset(Gauge2), + {noreply, State#state{normal_gauge = Gauge#gauge{value = 0}}}; +handle_event(Ev = #wx{}, State = #state{}) -> + demo:format(State#state.config,"Got Event ~p\n",[Ev]), + {noreply, State}. + +code_change(_, _, State) -> + {stop, ignore, State}. + +terminate(_Reason, _State) -> + ok. + +%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% +%% Local functions +%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% + +simulate_load(Gauge, Value) -> + wxGauge:setValue(Gauge, Value), + erlang:send_after(300, self(), tick). + +reset(#gauge{obj = Gauge}) -> + wxGauge:setValue(Gauge, 0). + + +create_option_sizer(Panel) -> + OptSizer = wxStaticBoxSizer:new(?wxVERTICAL, Panel, + [{label, "Options"}]), + + SimulateButton = wxToggleButton:new(Panel, ?ID_START_STOP, "Simulate load", + [{size, {200, 35}}]), + SimulateUndetermButton = wxToggleButton:new(Panel, ?ID_START_STOP_UNDET, + "Simulate Undeterminate load", + [{size, {200, 35}}]), + ClearButton = wxButton:new(Panel, ?wxID_CLEAR, + [{size, {200, 35}}]), + + wxSizer:add(OptSizer, SimulateButton), + wxSizer:add(OptSizer, SimulateUndetermButton), + wxSizer:add(OptSizer, ClearButton), + + wxWindow:connect(Panel, command_checkbox_clicked), + + {OptSizer, SimulateButton, SimulateUndetermButton}. |