%% %% %CopyrightBegin% %% %% Copyright Ericsson AB 2012-2013. 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% -module(observer_perf_wx). -export([start_link/2]). %% wx_object callbacks -export([init/1, handle_info/2, terminate/2, code_change/3, handle_call/3, handle_event/2, handle_sync_event/3, handle_cast/2]). %% Drawing wrappers for DC and GC areas -export([setup_graph_drawing/1, refresh_panel/6, haveGC/0, setPen/2, setFont/3, setBrush/2, strokeLine/5, strokeLines/2, drawRoundedRectangle/6, drawText/4, getTextExtent/2]). -behaviour(wx_object). -include_lib("wx/include/wx.hrl"). -include("observer_defs.hrl"). -record(state, { offset = 0.0, active = false, parent, windows, data = {0, queue:new()}, panel, paint, appmon }). -define(wxGC, wxGraphicsContext). -record(paint, {font, small, pen, pen2, pens, usegc = false}). -define(RQ_W, 1). -define(MEM_W, 2). -define(IO_W, 3). start_link(Notebook, Parent) -> wx_object:start_link(?MODULE, [Notebook, Parent], []). init([Notebook, Parent]) -> try Panel = wxPanel:new(Notebook), Main = wxBoxSizer:new(?wxVERTICAL), Style = ?wxFULL_REPAINT_ON_RESIZE bor ?wxCLIP_CHILDREN, CPU = wxPanel:new(Panel, [{winid, ?RQ_W}, {style,Style}]), wxSizer:add(Main, CPU, [{flag, ?wxEXPAND bor ?wxALL}, {proportion, 1}, {border, 5}]), MemIO = wxBoxSizer:new(?wxHORIZONTAL), MEM = wxPanel:new(Panel, [{winid, ?MEM_W}, {style,Style}]), IO = wxPanel:new(Panel, [{winid, ?IO_W}, {style,Style}]), wxSizer:add(MemIO, MEM, [{flag, ?wxEXPAND bor ?wxLEFT}, {proportion, 1}, {border, 5}]), wxSizer:add(MemIO, IO, [{flag, ?wxEXPAND bor ?wxLEFT bor ?wxRIGHT}, {proportion, 1}, {border, 5}]), wxSizer:add(Main, MemIO, [{flag, ?wxEXPAND bor ?wxDOWN}, {proportion, 1}, {border, 5}]), wxWindow:setSizer(Panel, Main), PaintInfo = setup_graph_drawing([CPU, MEM, IO]), process_flag(trap_exit, true), {Panel, #state{parent=Parent, panel =Panel, windows = {CPU, MEM, IO}, paint=PaintInfo }} catch _:Err -> io:format("~p crashed ~p: ~p~n",[?MODULE, Err, erlang:get_stacktrace()]), {stop, Err} end. setup_graph_drawing(Panels) -> IsWindows = element(1, os:type()) =:= win32, IgnoreCB = {callback, fun(_,_) -> ok end}, Do = fun(Panel) -> wxWindow:setBackgroundColour(Panel, ?wxWHITE), wxPanel:connect(Panel, paint, [callback]), IsWindows andalso wxPanel:connect(Panel, erase_background, [IgnoreCB]) end, _ = [Do(Panel) || Panel <- Panels], UseGC = haveGC(), Version28 = ?wxMAJOR_VERSION =:= 2 andalso ?wxMINOR_VERSION =:= 8, {Font, SmallFont} = if UseGC, Version28 -> %% Def font is really small when using Graphics contexts in 2.8 %% Hardcode it F = wxFont:new(12,?wxFONTFAMILY_DECORATIVE,?wxFONTSTYLE_NORMAL,?wxFONTWEIGHT_BOLD), SF = wxFont:new(10, ?wxFONTFAMILY_DECORATIVE, ?wxFONTSTYLE_NORMAL, ?wxFONTWEIGHT_NORMAL), {F, SF}; true -> DefFont = wxSystemSettings:getFont(?wxSYS_DEFAULT_GUI_FONT), DefSize = wxFont:getPointSize(DefFont), DefFamily = wxFont:getFamily(DefFont), F = wxFont:new(DefSize-1, DefFamily, ?wxFONTSTYLE_NORMAL, ?wxFONTWEIGHT_BOLD), SF = wxFont:new(DefSize-2, DefFamily, ?wxFONTSTYLE_NORMAL, ?wxFONTWEIGHT_NORMAL), {F, SF} end, BlackPen = wxPen:new({0,0,0}, [{width, 2}]), Pens = [wxPen:new(Col, [{width, 3}]) || Col <- tuple_to_list(colors())], #paint{usegc = UseGC, font = Font, small = SmallFont, pen = ?wxGREY_PEN, pen2 = BlackPen, pens = list_to_tuple(Pens) }. %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% handle_event(#wx{event=#wxCommand{type=command_menu_selected}}, State = #state{}) -> {noreply, State}; handle_event(Event, _State) -> error({unhandled_event, Event}). %%%%%%%%%% handle_sync_event(#wx{obj=Panel, event = #wxPaint{}},_, #state{active=Active, offset=Offset, paint=Paint, windows=Windows, data=Data}) -> %% Sigh workaround bug on MacOSX (Id in paint event is always 0) %% Panel = element(Id, Windows), Id = if Panel =:= element(?RQ_W, Windows) -> runq; Panel =:= element(?MEM_W, Windows) -> memory; Panel =:= element(?IO_W, Windows) -> io end, refresh_panel(Panel, Id, Offset, Data, Active, Paint), ok. refresh_panel(Panel, Id, Offset, Data, Active, #paint{usegc=UseGC} = Paint) -> %% PaintDC must be created in a callback to work on windows. IsWindows = element(1, os:type()) =:= win32, DC = if IsWindows -> %% Ugly hack to aviod flickering on windows, works on windows only %% But the other platforms are doublebuffered by default wx:typeCast(wxBufferedPaintDC:new(Panel), wxPaintDC); true -> wxPaintDC:new(Panel) end, IsWindows andalso wxDC:clear(DC), GC = if UseGC -> ?wxGC:create(DC); true -> DC end, %% Nothing is drawn until wxPaintDC is destroyed. try draw(Offset, Id, {UseGC, GC}, Panel, Paint, Data, Active) catch _:Err -> io:format("Internal error ~p ~p~n",[Err, erlang:get_stacktrace()]) end, UseGC andalso ?wxGC:destroy(GC), wxPaintDC:destroy(DC). %%%%%%%%%% handle_call(Event, From, _State) -> error({unhandled_call, Event, From}). handle_cast(Event, _State) -> error({unhandled_cast, Event}). %%%%%%%%%% handle_info(Stats = {stats, 1, _, _, _}, State = #state{panel=Panel, data=Data, active=Active}) -> if Active -> wxWindow:refresh(Panel), Freq = 6, erlang:send_after(trunc(1000 / Freq), self(), {refresh, 1, Freq}); true -> ignore end, {noreply, State#state{offset=0.0, data = add_data(Stats, Data)}}; handle_info({refresh, Seq, Freq}, State = #state{panel=Panel, offset=Prev}) -> wxWindow:refresh(Panel), Next = Seq+1, if Seq > 1, Prev =:= 0.0 -> %% We didn't have time to handle the refresh {noreply, State}; Next < Freq -> erlang:send_after(trunc(1000 / Freq), self(), {refresh, Next, Freq}), {noreply, State#state{offset=Seq/Freq}}; true -> {noreply, State#state{offset=Seq/Freq}} end; handle_info({active, Node}, State = #state{parent=Parent, panel=Panel, appmon=Old}) -> create_menus(Parent, []), try Node = node(Old), wxWindow:refresh(Panel), {noreply, State#state{active=true}} catch _:_ -> catch Old ! exit, Me = self(), Pid = spawn_link(Node, observer_backend, fetch_stats, [Me, 1000]), wxWindow:refresh(Panel), {noreply, State#state{active=true, appmon=Pid, data={0, queue:new()}}} end; handle_info(not_active, State = #state{appmon=_Pid}) -> %% Pid ! exit, {noreply, State#state{active=false}}; handle_info({'EXIT', Old, _}, State = #state{appmon=Old}) -> {noreply, State#state{active=false, appmon=undefined}}; handle_info(_Event, State) -> %% io:format("~p:~p: ~p~n",[?MODULE,?LINE,_Event]), {noreply, State}. %%%%%%%%%% terminate(_Event, #state{appmon=Pid}) -> catch Pid ! exit, ok. code_change(_, _, State) -> State. add_data(Stats, {N, Q}) when N > 60 -> {N, queue:drop(queue:in(Stats, Q))}; add_data(Stats, {N, Q}) -> {N+1, queue:in(Stats, Q)}. %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% create_menus(Parent, _) -> MenuEntries = [{"File", [ ]} ], observer_wx:create_menus(Parent, MenuEntries). %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% collect_data(runq, {N, Q}) -> case queue:to_list(Q) of [] -> {0, 0, [], []}; [_] -> {0, 0, [], []}; [{stats, _Ver, Init0, _IO, _Mem}|Data0] -> Init = lists:sort(Init0), [_|Data=[First|_]] = lists:foldl(fun({stats, _, T0, _, _}, [Prev|Acc]) -> TN = lists:sort(T0), Delta = calc_delta(TN, Prev), [TN, list_to_tuple(Delta)|Acc] end, [Init], Data0), NoGraphs = tuple_size(First), {N, lmax(Data), lists:reverse([First|Data]), lists:seq(1, NoGraphs)} end; collect_data(memory, {N, Q}) -> MemT = mem_types(), Data = [list_to_tuple([Value || {Type,Value} <- MemInfo, lists:member(Type, MemT)]) || {stats, _Ver, _RQ, _IO, MemInfo} <- queue:to_list(Q)], {N, lmax(Data), Data, MemT}; collect_data(io, {N, Q}) -> case queue:to_list(Q) of [] -> {0, 0, [], []}; [_] -> {0, 0, [], []}; [{stats, _Ver, _RQ, {{_,In0}, {_,Out0}}, _Mem}|Data0] -> [_,_|Data=[First|_]] = lists:foldl(fun({stats, _, _, {{_,In}, {_,Out}}, _}, [PIn,Pout|Acc]) -> [In,Out,{In-PIn,Out-Pout}|Acc] end, [In0,Out0], Data0), {N, lmax(Data), lists:reverse([First|Data]), [input, output]} end; collect_data(alloc, {N, Q}) -> List = queue:to_list(Q), Data = [list_to_tuple([Carrier || {_Type,_Block,Carrier} <- MemInfo]) || MemInfo <- List], Info = case List of %% Varies depending on erlang build config/platform [MInfo|_] -> [Type || {Type, _, _} <- MInfo]; _ -> [] end, {N, lmax(Data), Data, Info}; collect_data(utilz, {N, Q}) -> List = queue:to_list(Q), Data = [list_to_tuple([round(100*Block/Carrier) || {_Type,Block,Carrier} <- MemInfo]) || MemInfo <- List], Info = case List of %% Varies depending on erlang build config/platform [MInfo|_] -> [Type || {Type, _, _} <- MInfo]; _ -> [] end, {N, lmax(Data), Data, Info}. mem_types() -> [total, processes, atom, binary, code, ets]. lmax([]) -> 0; lmax(List) -> Max = [lists:max(tuple_to_list(T)) || T <- List, tuple_size(T) > 0], case Max of [] -> 0; _ -> lists:max(Max) end. calc_delta([{Id, WN, TN}|Ss], [{Id, WP, TP}|Ps]) -> [100*(WN-WP) div (TN-TP)|calc_delta(Ss, Ps)]; calc_delta([], []) -> []. %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% draw(Offset, Id, DC, Panel, Paint=#paint{pens=Pens, small=Small}, Data, Active) -> %% This can be optimized a lot by collecting data once %% and draw to memory and then blit memory and only draw new entries in new memory %% area. Hmm now rewritten to use ?wxGC I don't now if it is feasable. {Len, Max0, Hs, Info} = collect_data(Id, Data), {Max,_,_} = MaxDisp = calc_max(Id, Max0), Size = wxWindow:getClientSize(Panel), {X0,Y0,WS,HS, DrawBs} = draw_borders(Id, Info, DC, Size, MaxDisp, Paint), Last = 60*WS+X0-1, Start = max(61-Len, 0)*WS+X0 - Offset*WS, Samples = length(Hs), NoGraphs = try tuple_size(hd(Hs)) catch _:_ -> 0 end, case Active andalso Samples > 1 andalso NoGraphs > 0 of true -> Draw = fun(N) -> Lines = make_lines(Hs, Start, N, {X0,Max*HS,Last}, Y0, WS, HS), setPen(DC, element(1+ ((N-1) rem tuple_size(Pens)), Pens)), strokeLines(DC, Lines), N+1 end, [Draw(I) || I <- lists:seq(NoGraphs, 1, -1)], DrawBs(); false -> DrawBs(), Text = case Active andalso Samples =< 1 of true -> "Waiting for data"; false -> "Information not available" end, setFont(DC, Small, {0,0,0}), drawText(DC, Text, X0 + 100, element(2,Size) div 2) end, ok. make_lines(Ds = [Data|_], PX, N, Clip, ZeroY, WS, HS) -> Y = element(N,Data), make_lines(Ds, PX, N, Clip, ZeroY, WS, HS, Y, []). make_lines([D1 | Ds = [D2|Rest]], PX, N, Clip={Cx,Cy, _}, ZeroY, WS, HS, Y0, Acc0) -> Y1 = element(N,D1), Y2 = element(N,D2), Y3 = case Rest of [D3|_] -> element(N,D3); [] -> Y2 end, This = {max(Cx, PX),ZeroY-min(Cy,Y1*HS)}, Acc = if (abs(Y1-Y2) * HS) < 3.0 -> [This|Acc0]; WS < 3.0 -> [This|Acc0]; PX < Cx -> make_splines(Y0,Y1,Y2,Y3,PX,Clip,ZeroY,WS,HS,Acc0); true -> make_splines(Y0,Y1,Y2,Y3,PX,Clip,ZeroY,WS,HS,[This|Acc0]) end, make_lines(Ds, PX+WS, N, Clip, ZeroY, WS, HS, Y1, Acc); make_lines([D1], _PX, N, {_,Cy,Last}, ZeroY, _WS, HS, _Y0, Acc) -> Y1 = element(N,D1), [{Last,ZeroY-min(Cy, Y1*HS)}|Acc]. make_splines(Y00,Y10,Y20,Y30,PX,Clip,ZeroY,WS,HS,Acc) -> Y1 = Y10*HS, Y2 = Y20*HS, Steps = min(abs(Y1-Y2), WS), if Steps > 2 -> Y0 = Y00*HS, Y3 = Y30*HS, Tan = spline_tan(Y0,Y1,Y2,Y3), Delta = 1/Steps, splines(Steps-1, 0.0, Delta, Tan, Y1,Y2, PX, Clip,ZeroY, Delta*WS, Acc); true -> Acc end. splines(N, XD, XD0, Tan, Y1,Y2, PX0, Clip={Cx,Cy,_},ZeroY, WS, Acc) when N > 0 -> PX = PX0+WS, Delta = XD+XD0, if PX < Cx -> splines(N-1, Delta, XD0, Tan, Y1, Y2, PX, Clip,ZeroY, WS, Acc); true -> Y = min(Cy, max(0,spline(Delta, Tan, Y1,Y2))), splines(N-1, Delta, XD0, Tan, Y1, Y2, PX, Clip,ZeroY, WS, [{PX, ZeroY-Y}|Acc]) end; splines(_N, _XD, _XD0, _Tan, _Y1,_Y2, _PX, _Clip,_ZeroY, _WS, Acc) -> Acc. spline(T, {M1, M2}, Y1, Y2) -> %% Hermite Basis Funcs T2 = T*T, T3 = T*T*T, H1 = 2*T3-3*T2+1, H2 = -2*T3+3*T2, H3 = T3-2*T2+T, H4 = T3-T2, %% Result M1*H3 + Y1*H1 + Y2*H2 + M2*H4. spline_tan(Y0, Y1, Y2, Y3) -> S = 1.0, C = 0.5, %% Calc tangent values M1 = S*C*(Y2-Y0), M2 = S*C*(Y3-Y1), {M1,M2}. -define(BW, 5). -define(BH, 5). draw_borders(Type, Info, DC, {W,H}, {Max, Unit, MaxUnit}, #paint{pen=Pen, pen2=Pen2, font=Font, small=Small}) -> Str1 = observer_lib:to_str(MaxUnit), Str2 = observer_lib:to_str(MaxUnit div 2), Str3 = observer_lib:to_str(0), setFont(DC, Font, {0,0,0}), {TW,TH} = getTextExtent(DC, Str1), {SpaceW, _} = getTextExtent(DC, "W"), GraphX0 = ?BW+TW+?BW, GraphX1 = W-?BW*4, TopTextX = ?BW*3+TW, MaxTextY = TH+?BH, BottomTextY = H-?BH-TH, SecondsY = BottomTextY - TH, GraphY0 = MaxTextY + (TH / 2), GraphY1 = SecondsY - ?BH, GraphW = GraphX1-GraphX0-1, GraphH = GraphY1-GraphY0-1, GraphY25 = GraphY0 + (GraphY1 - GraphY0) / 4, GraphY50 = GraphY0 + (GraphY1 - GraphY0) / 2, GraphY75 = GraphY0 + 3*(GraphY1 - GraphY0) / 4, ScaleW = GraphW / 60, ScaleH = GraphH / Max, setFont(DC, Small, {0,0,0}), Align = fun(Str, Y) -> {StrW, _} = getTextExtent(DC, Str), drawText(DC, Str, GraphX0 - StrW - ?BW, Y) end, Align(Str1, MaxTextY), Align(Str2, GraphY50 - (TH / 2)), Align(Str3, GraphY1 - (TH / 2) + 1), setPen(DC, Pen), DrawSecs = fun(Secs, Pos) -> Str = [observer_lib:to_str(Secs)|" s"], X = GraphX0+Pos, drawText(DC, Str, X-SpaceW, SecondsY), strokeLine(DC, X, GraphY0, X, GraphY1+5), Pos + 10*ScaleW end, lists:foldl(DrawSecs, 0, lists:seq(60,0, -10)), strokeLine(DC, GraphX0-3, GraphY25, GraphX1, GraphY25), strokeLine(DC, GraphX0-3, GraphY50, GraphX1, GraphY50), strokeLine(DC, GraphX0-3, GraphY75, GraphX1, GraphY75), setFont(DC, Font, {0,0,0}), Text = fun(X,Y, Str, PenId) -> if PenId == 0 -> setFont(DC, Font, {0,0,0}); PenId > 0 -> Id = 1 + ((PenId-1) rem tuple_size(colors())), setFont(DC, Font, element(Id, colors())) end, drawText(DC, Str, X, Y), {StrW, _} = getTextExtent(DC, Str), StrW + X + ?BW*2 end, case Type of runq -> drawText(DC, "Scheduler Utilization (%) ", TopTextX, ?BH), TN0 = Text(TopTextX, BottomTextY, "Scheduler: ", 0), lists:foldl(fun(Id, Pos0) -> Text(Pos0, BottomTextY, integer_to_list(Id), Id) end, TN0, Info); memory -> drawText(DC, "Memory Usage " ++ Unit, TopTextX,?BH), lists:foldl(fun(MType, {PenId, Pos0}) -> Str = to_string(MType), Pos = Text(Pos0, BottomTextY, Str, PenId), {PenId+1, Pos} end, {1, TopTextX}, Info); io -> drawText(DC, "IO Usage " ++ Unit, TopTextX,?BH), lists:foldl(fun(MType, {PenId, Pos0}) -> Str = to_string(MType), Pos = Text(Pos0, BottomTextY, Str, PenId), {PenId+1, Pos} end, {1, TopTextX}, Info); alloc -> drawText(DC, "Carrier Size " ++ Unit, TopTextX,?BH); utilz -> drawText(DC, "Carrier Utilization (%)" ++ Unit, TopTextX,?BH), lists:foldl(fun(MType, {PenId, Pos0}) -> Str = to_string(MType), Pos = Text(Pos0, BottomTextY, Str, PenId), {PenId+1, Pos} end, {1, TopTextX}, Info) end, DrawBorder = fun() -> setPen(DC, Pen2), strokeLines(DC, [{GraphX0, GraphY0-1}, {GraphX0, GraphY1+1}, {GraphX1, GraphY1+1}, {GraphX1, GraphY0-1}, {GraphX0, GraphY0-1}]) end, {GraphX0+1, GraphY1, ScaleW, ScaleH, DrawBorder}. to_string(Atom) -> Name = atom_to_list(Atom), case lists:reverse(Name) of "colla_" ++ Rev -> uppercase(lists:reverse(Rev)); _ -> uppercase(Name) end. uppercase([C|Rest]) -> [C-$a+$A|Rest]. calc_max(Type, Max) -> bytes(Type, Max). calc_max1(Max) when Max < 10 -> 10; calc_max1(Max) -> case Max div 10 of X when X < 10 -> case Max rem 10 of 0 -> Max; _ -> (X+1)*10 end; X -> 10*calc_max1(X) end. bytes(runq, Val) -> Upper = calc_max1(Val), {Upper, "", Upper}; bytes(utilz, Val) -> Upper = calc_max1(Val), {Upper, "", Upper}; bytes(_, B) -> KB = B div 1024, MB = KB div 1024, GB = MB div 1024, if GB > 10 -> Upper = calc_max1(GB), {Upper*1024*1024*1024, "(GB)", Upper}; MB > 10 -> Upper = calc_max1(MB), {Upper*1024*1024, "(MB)", Upper}; KB > 0 -> Upper = calc_max1(KB), {Upper*1024, "(KB)", Upper}; true -> Upper = calc_max1(B), {Upper, "(B)", Upper} end. colors() -> {{240, 100, 100}, {100, 240, 100}, {100, 100, 240}, {220, 220, 80}, {100, 240, 240}, {240, 100, 240}, {100, 25, 25}, {25, 100, 25}, {25, 25, 100}, {120, 120, 0}, {25, 100, 100}, {100, 50, 100} }. %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% %% wxDC and ?wxGC wrappers haveGC() -> try wxGraphicsRenderer:getDefaultRenderer(), true catch _:_ -> false end. setPen({false, DC}, Pen) -> wxDC:setPen(DC, Pen); setPen({true, GC}, Pen) -> ?wxGC:setPen(GC, Pen). setFont({false, DC}, Font, Color) -> wxDC:setTextForeground(DC, Color), wxDC:setFont(DC, Font); setFont({true, GC}, Font, Color) -> ?wxGC:setFont(GC, Font, Color). setBrush({false, DC}, Brush) -> wxDC:setBrush(DC, Brush); setBrush({true, GC}, Brush) -> ?wxGC:setBrush(GC, Brush). strokeLine({false, DC}, X0, Y0, X1, Y1) -> wxDC:drawLine(DC, {round(X0), round(Y0)}, {round(X1), round(Y1)}); strokeLine({true, GC}, X0, Y0, X1, Y1) -> ?wxGC:strokeLine(GC, X0, Y0, X1, Y1). strokeLines({false, DC}, Lines) -> wxDC:drawLines(DC, [{round(X), round(Y)} || {X,Y} <- Lines]); strokeLines({true, GC}, Lines) -> ?wxGC:strokeLines(GC, Lines). drawRoundedRectangle({false, DC}, X0, Y0, X1, Y1, R) -> wxDC:drawRoundedRectangle(DC, {round(X0), round(Y0)}, {round(X1), round(Y1)}, round(R)); drawRoundedRectangle({true, GC}, X0, Y0, X1, Y1, R) -> ?wxGC:drawRoundedRectangle(GC, X0, Y0, X1, Y1, R). drawText({false, DC}, Str, X, Y) -> wxDC:drawText(DC, Str, {round(X),round(Y)}); drawText({true, GC}, Str, X, Y) -> ?wxGC:drawText(GC, Str, X, Y). getTextExtent({false, DC}, Str) -> wxDC:getTextExtent(DC, Str); getTextExtent({true, GC}, Str) -> {W,H,_,_} = ?wxGC:getTextExtent(GC, Str), {W,H}.