%%
%% %CopyrightBegin%
%%
%% Copyright Ericsson AB 2007-2016. 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(percept_image).
-export([ proc_lifetime/5,
percentage/3,
graph/3,
graph/4,
activities/3,
activities/4]).
-record(graph_area, {x = 0, y = 0, width, height}).
-compile(inline).
%%% -------------------------------------
%%% GRAF
%%% -------------------------------------
%% graph(Widht, Height, Range, Data)
graph(Width, Height, {RXmin, RYmin, RXmax, RYmax}, Data) ->
Data2 = [{X, Y1 + Y2} || {X, Y1, Y2} <- Data],
MinMax = percept_analyzer:minmax(Data2),
{Xmin, Ymin, Xmax, Ymax} = MinMax,
graf1(Width, Height,{ lists:min([RXmin, Xmin]),
lists:min([RYmin, Ymin]),
lists:max([RXmax, Xmax]),
lists:max([RYmax, Ymax])}, Data).
%% graph(Widht, Height, Data) = Image
%% In:
%% Width = integer(),
%% Height = integer(),
%% Data = [{Time, Procs, Ports}]
%% Time = float()
%% Procs = integer()
%% Ports = integer()
%% Out:
%% Image = binary()
graph(Width, Height, Data) ->
Data2 = [{X, Y1 + Y2} || {X, Y1, Y2} <- Data],
Bounds = percept_analyzer:minmax(Data2),
graf1(Width, Height, Bounds, Data).
graf1(Width, Height, {Xmin, Ymin, Xmax, Ymax}, Data) ->
% Calculate areas
HO = 20,
GrafArea = #graph_area{x = HO, y = 4, width = Width - 2*HO, height = Height - 17},
XticksArea = #graph_area{x = HO, y = Height - 13, width = Width - 2*HO, height = 13},
YticksArea = #graph_area{x = 1, y = 4, width = HO, height = Height - 17},
%% Initiate Image
Image = egd:create(Width, Height),
%% Set colors
Black = egd:color(Image, {0, 0, 0}),
ProcColor = egd:color(Image, {0, 255, 0}),
PortColor = egd:color(Image, {255, 0, 0}),
%% Draw graf, xticks and yticks
draw_graf(Image, Data, {Black, ProcColor, PortColor}, GrafArea, {Xmin, Ymin, Xmax, Ymax}),
draw_xticks(Image, Black, XticksArea, {Xmin, Xmax}, Data),
draw_yticks(Image, Black, YticksArea, {Ymin, Ymax}),
%% Kill image and return binaries
Binary = egd:render(Image, png),
egd:destroy(Image),
Binary.
%% draw_graf(Image, Data, Color, GraphArea, DataBounds)
%% Image, port to Image
%% Data, list of three tuple data, (X, Y1, Y2)
%% Color, {ForegroundColor, ProcFillColor, PortFillColor}
%% DataBounds, {Xmin, Ymin, Xmax, Ymax}
draw_graf(Im, Data, Colors, GA = #graph_area{x = X0, y = Y0, width = Width, height = Height}, {Xmin, _Ymin, Xmax, Ymax}) ->
Dx = (Width)/(Xmax - Xmin),
Dy = (Height)/(Ymax),
Plotdata = [{trunc(X0 + X*Dx - Xmin*Dx), trunc(Y0 + Height - Y1*Dy), trunc(Y0 + Height - (Y1 + Y2)*Dy)} || {X, Y1, Y2} <- Data],
draw_graf(Im, Plotdata, Colors, GA).
draw_graf(Im, [{X1, Yproc1, Yport1}, {X2, Yproc2, Yport2}|Data], C, GA) when X2 - X1 < 1 ->
draw_graf(Im, [{X1, [{Yproc2, Yport2},{Yproc1, Yport1}]}|Data], C, GA);
draw_graf(Im, [{X1, Ys1}, {X2, Yproc2, Yport2}|Data], C, GA) when X2 - X1 < 1, is_list(Ys1) ->
draw_graf(Im, [{X1, [{Yproc2, Yport2}|Ys1]}|Data], C, GA);
draw_graf(Im, [{X1, Yproc1, Yport1}, {X2, Yproc2, Yport2}|Data], C = {B, PrC, PoC}, GA = #graph_area{y = Y0, height = H}) ->
GyZero = trunc(Y0 + H),
egd:filledRectangle(Im, {X1, GyZero}, {X2, Yproc1}, PrC),
egd:filledRectangle(Im, {X1, Yproc1}, {X2, Yport1}, PoC),
egd:line(Im, {X1, Yport1}, {X2, Yport1}, B), % top line
egd:line(Im, {X1, Yport2}, {X1, Yport1}, B), % right line
egd:line(Im, {X2, Yport1}, {X2, Yport2}, B), % right line
draw_graf(Im, [{X2, Yproc2, Yport2}|Data], C, GA);
draw_graf(Im, [{X1, Ys1 = [{Yproc1,Yport1}|_]}, {X2, Yproc2, Yport2}|Data], C = {B, PrC, PoC}, GA = #graph_area{y = Y0, height = H}) ->
GyZero = trunc(Y0 + H),
Yprocs = [Yp || {Yp, _} <- Ys1],
Yports = [Yp || {_, Yp} <- Ys1],
YprMin = lists:min(Yprocs),
YprMax = lists:max(Yprocs),
YpoMax = lists:max(Yports),
egd:filledRectangle(Im, {X1, GyZero}, {X2, Yproc1}, PrC),
egd:filledRectangle(Im, {X1, Yproc1}, {X2, Yport1}, PoC),
egd:filledRectangle(Im, {X1, Yport1}, {X2, Yport1}, B), % top line
egd:filledRectangle(Im, {X2, Yport1}, {X2, Yport2}, B), % right line
egd:filledRectangle(Im, {X1, GyZero}, {X1, YprMin}, PrC), % left proc green line
egd:filledRectangle(Im, {X1, YprMax}, {X1, YpoMax}, PoC), % left port line
egd:filledRectangle(Im, {X1, YprMax}, {X1, YprMin}, B),
draw_graf(Im, [{X2, Yproc2, Yport2}|Data], C, GA);
draw_graf(_, _, _, _) -> ok.
draw_xticks(Image, Color, XticksArea, {Xmin, Xmax}, Data) ->
#graph_area{x = X0, y = Y0, width = Width} = XticksArea,
DX = Width/(Xmax - Xmin),
Offset = X0 - Xmin*DX,
Y = trunc(Y0),
Font = load_font(),
{FontW, _FontH} = egd_font:size(Font),
egd:filledRectangle(Image, {trunc(X0), Y}, {trunc(X0 + Width), Y}, Color),
lists:foldl(
fun ({X,_,_}, PX) ->
X1 = trunc(Offset + X*DX),
% Optimization:
% if offset has past half the previous text
% start checking this text
if
X1 > PX ->
Text = lists:flatten(io_lib:format("~.3f", [float(X)])),
TextLength = length(Text),
TextWidth = TextLength*FontW,
Spacing = 2,
if
X1 > PX + round(TextWidth/2) + Spacing ->
egd:line(Image, {X1, Y - 3}, {X1, Y + 3}, Color),
text(Image, {X1 - round(TextWidth/2), Y + 2}, Font, Text, Color),
X1 + round(TextWidth/2) + Spacing;
true ->
PX
end;
true ->
PX
end
end, 0, Data).
draw_yticks(Im, Color, TickArea, {_,Ymax}) ->
#graph_area{x = X0, y = Y0, width = Width, height = Height} = TickArea,
Font = load_font(),
X = trunc(X0 + Width),
Dy = (Height)/(Ymax),
Yts = if
Height/(Ymax*12) < 1.0 -> round(1 + Ymax*15/Height);
true -> 1
end,
egd:filledRectangle(Im, {X, trunc(0 + Y0)}, {X, trunc(Y0 + Height)}, Color),
draw_yticks0(Im, Font, Color, 0, Yts, Ymax, {X, Height, Dy}).
draw_yticks0(Im, Font, Color, Yi, Yts, Ymax, Area) when Yi < Ymax ->
{X, Height, Dy} = Area,
Y = round(Height - (Yi*Dy) + 3),
egd:filledRectangle(Im, {X - 3, Y}, {X + 3, Y}, Color),
Text = lists:flatten(io_lib:format("~p", [Yi])),
text(Im, {0, Y - 4}, Font, Text, Color),
draw_yticks0(Im, Font, Color, Yi + Yts, Yts, Ymax, Area);
draw_yticks0(_, _, _, _, _, _, _) -> ok.
%%% -------------------------------------
%%% ACTIVITIES
%%% -------------------------------------
%% activities(Width, Height, Range, Activities) -> Binary
%% In:
%% Width = integer()
%% Height = integer()
%% Range = {float(), float()}
%% Activities = [{float(), active | inactive}]
%% Out:
%% Binary = binary()
activities(Width, Height, {UXmin, UXmax}, Activities) ->
Xs = [ X || {X,_} <- Activities],
Xmin = lists:min(Xs),
Xmax = lists:max(Xs),
activities0(Width, Height, {lists:min([Xmin, UXmin]), lists:max([UXmax, Xmax])}, Activities).
activities(Width, Height, Activities) ->
Xs = [ X || {X,_} <- Activities],
Xmin = lists:min(Xs),
Xmax = lists:max(Xs),
activities0(Width, Height, {Xmin, Xmax}, Activities).
activities0(Width, Height, {Xmin, Xmax}, Activities) ->
Image = egd:create(Width, Height),
Grey = egd:color(Image, {200, 200, 200}),
HO = 20,
ActivityArea = #graph_area{x = HO, y = 0, width = Width - 2*HO, height = Height},
egd:filledRectangle(Image, {0, 0}, {Width, Height}, Grey),
draw_activity(Image, {Xmin, Xmax}, ActivityArea, Activities),
Binary = egd:render(Image, png),
egd:destroy(Image),
Binary.
draw_activity(Image, {Xmin, Xmax}, Area = #graph_area{ width = Width }, Acts) ->
White = egd:color({255, 255, 255}),
Green = egd:color({0,250, 0}),
Black = egd:color({0, 0, 0}),
Dx = Width/(Xmax - Xmin),
draw_activity(Image, {Xmin, Xmax}, Area, {White, Green, Black}, Dx, Acts).
draw_activity(_, _, _, _, _, [_]) -> ok;
draw_activity(Image, {Xmin, Xmax}, Area = #graph_area{ height = Height, x = X0 }, {Cw, Cg, Cb}, Dx, [{Xa1, State}, {Xa2, Act2} | Acts]) ->
X1 = erlang:trunc(X0 + Dx*Xa1 - Xmin*Dx),
X2 = erlang:trunc(X0 + Dx*Xa2 - Xmin*Dx),
case State of
inactive ->
egd:filledRectangle(Image, {X1, 0}, {X2, Height - 1}, Cw),
egd:rectangle(Image, {X1, 0}, {X2, Height - 1}, Cb);
active ->
egd:filledRectangle(Image, {X1, 0}, {X2, Height - 1}, Cg),
egd:rectangle(Image, {X1, 0}, {X2, Height - 1}, Cb)
end,
draw_activity(Image, {Xmin, Xmax}, Area, {Cw, Cg, Cb}, Dx, [{Xa2, Act2} | Acts]).
%%% -------------------------------------
%%% Process lifetime
%%% Used by processes page
%%% -------------------------------------
proc_lifetime(Width, Height, Start, End, ProfileTime) ->
Im = egd:create(round(Width), round(Height)),
Black = egd:color(Im, {0, 0, 0}),
Green = egd:color(Im, {0, 255, 0}),
% Ratio and coordinates
DX = (Width-1)/ProfileTime,
X1 = round(DX*Start),
X2 = round(DX*End),
% Paint
egd:filledRectangle(Im, {X1, 0}, {X2, Height - 1}, Green),
egd:rectangle(Im, {X1, 0}, {X2, Height - 1}, Black),
Binary = egd:render(Im, png),
egd:destroy(Im),
Binary.
%%% -------------------------------------
%%% Percentage
%%% Used by process_info page
%%% Percentage should be 0.0 -> 1.0
%%% -------------------------------------
percentage(Width, Height, Percentage) ->
Im = egd:create(round(Width), round(Height)),
Font = load_font(),
Black = egd:color(Im, {0, 0, 0}),
Green = egd:color(Im, {0, 255, 0}),
% Ratio and coordinates
X = round(Width - 1 - Percentage*(Width - 1)),
% Paint
egd:filledRectangle(Im, {X, 0}, {Width - 1, Height - 1}, Green),
{FontW, _} = egd_font:size(Font),
String = lists:flatten(io_lib:format("~.10B %", [round(100*Percentage)])),
text( Im,
{round(Width/2 - (FontW*length(String)/2)), 0},
Font,
String,
Black),
egd:rectangle(Im, {X, 0}, {Width - 1, Height - 1}, Black),
Binary = egd:render(Im, png),
egd:destroy(Im),
Binary.
load_font() ->
Filename = filename:join([code:priv_dir(percept),"fonts", "6x11_latin1.wingsfont"]),
egd_font:load(Filename).
text(Image, {X,Y}, Font, Text, Color) ->
egd:text(Image, {X,Y-2}, Font, Text, Color).
