doc/v628/tree_8py.html

from ROOT import TCanvas, TPaveLabel, TPaveText, TPavesText, TText

from ROOT import TArrow, TLine

from ROOT import gROOT, gBenchmark


#gROOT.Reset()


c1 = TCanvas('c1','Tree Data Structure',200,10,750,940)

c1.Range(0,-0.1,1,1.15)


gBenchmark.Start('tree')


branchcolor = 26

leafcolor   = 30

basketcolor = 42

offsetcolor = 43

#title = TPaveLabel(.3,1.05,.8,1.13,c1.GetTitle())

title = TPaveLabel(.3,1.05,.8,1.13,'Tree Data Structure')

title.SetFillColor(16)

title.Draw()

tree = TPaveText(.01,.75,.15,1.00)

tree.SetFillColor(18)

tree.SetTextAlign(12)

tnt = tree.AddText('Tree')

tnt.SetTextAlign(22)

tnt.SetTextSize(0.030)

tree.AddText('fScanField')

tree.AddText('fMaxEventLoop')

tree.AddText('fMaxVirtualSize')

tree.AddText('fEntries')

tree.AddText('fDimension')

tree.AddText('fSelectedRows')

tree.Draw()

farm = TPavesText(.01,1.02,.15,1.1,9,'tr')

tfarm = farm.AddText('CHAIN')

tfarm.SetTextSize(0.024)

farm.AddText('Collection')

farm.AddText('of Trees')

farm.Draw()

link = TLine(.15,.92,.80,.92)

link.SetLineWidth(2)

link.SetLineColor(1)

link.Draw()

link.DrawLine(.21,.87,.21,.275)

link.DrawLine(.23,.87,.23,.375)

link.DrawLine(.25,.87,.25,.775)

link.DrawLine(.41,.25,.41,-.025)

link.DrawLine(.43,.25,.43,.075)

link.DrawLine(.45,.25,.45,.175)

branch0 = TPaveLabel(.20,.87,.35,.97,'Branch 0')

branch0.SetTextSize(0.35)

branch0.SetFillColor(branchcolor)

branch0.Draw()

branch1 = TPaveLabel(.40,.87,.55,.97,'Branch 1')

branch1.SetTextSize(0.35)

branch1.SetFillColor(branchcolor)

branch1.Draw()

branch2 = TPaveLabel(.60,.87,.75,.97,'Branch 2')

branch2.SetTextSize(0.35)

branch2.SetFillColor(branchcolor)

branch2.Draw()

branch3 = TPaveLabel(.80,.87,.95,.97,'Branch 3')

branch3.SetTextSize(0.35)

branch3.SetFillColor(branchcolor)

branch3.Draw()

leaf0 = TPaveLabel(.4,.75,.5,.8,'Leaf 0')

leaf0.SetFillColor(leafcolor)

leaf0.Draw()

leaf1 = TPaveLabel(.6,.75,.7,.8,'Leaf 1')

leaf1.SetFillColor(leafcolor)

leaf1.Draw()

leaf2 = TPaveLabel(.8,.75,.9,.8,'Leaf 2')

leaf2.SetFillColor(leafcolor)

leaf2.Draw()

firstevent = TPaveText(.4,.35,.9,.4)

firstevent.AddText('First event of each basket')

firstevent.AddText('Array of fMaxBaskets Integers')

firstevent.SetFillColor(basketcolor)

firstevent.Draw()

basket0 = TPaveLabel(.4,.25,.5,.3,'Basket 0')

basket0.SetFillColor(basketcolor)

basket0.Draw()

basket1 = TPaveLabel(.6,.25,.7,.3,'Basket 1')

basket1.SetFillColor(basketcolor)

basket1.Draw()

basket2 = TPaveLabel(.8,.25,.9,.3,'Basket 2')

basket2.SetFillColor(basketcolor)

basket2.Draw()


offset = TPaveText(.55,.15,.9,.2)

offset.AddText('Offset of events in fBuffer')

offset.AddText('Array of fEventOffsetLen Integers')

offset.AddText('(if variable length structure)')

offset.SetFillColor(offsetcolor)

offset.Draw()

buffer = TPaveText(.55,.05,.9,.1)

buffer.AddText('Basket buffer')

buffer.AddText('Array of fBasketSize chars')

buffer.SetFillColor(offsetcolor)

buffer.Draw()

zipbuffer = TPaveText(.55,-.05,.75,.0)

zipbuffer.AddText('Basket compressed buffer')

zipbuffer.AddText('(if compression)')

zipbuffer.SetFillColor(offsetcolor)

zipbuffer.Draw()

ar1 = TArrow()

ar1.SetLineWidth(2)

ar1.SetLineColor(1)

ar1.SetFillStyle(1001)

ar1.SetFillColor(1)

ar1.DrawArrow(.21,.275,.39,.275,0.015,'|>')

ar1.DrawArrow(.23,.375,.39,.375,0.015,'|>')

ar1.DrawArrow(.25,.775,.39,.775,0.015,'|>')

ar1.DrawArrow(.50,.775,.59,.775,0.015,'|>')

ar1.DrawArrow(.70,.775,.79,.775,0.015,'|>')

ar1.DrawArrow(.50,.275,.59,.275,0.015,'|>')

ar1.DrawArrow(.70,.275,.79,.275,0.015,'|>')

ar1.DrawArrow(.45,.175,.54,.175,0.015,'|>')

ar1.DrawArrow(.43,.075,.54,.075,0.015,'|>')

ar1.DrawArrow(.41,-.025,.54,-.025,0.015,'|>')

ldot = TLine(.95,.92,.99,.92)

ldot.SetLineStyle(3)

ldot.Draw()

ldot.DrawLine(.9,.775,.99,.775)

ldot.DrawLine(.9,.275,.99,.275)

ldot.DrawLine(.55,.05,.55,0)

ldot.DrawLine(.9,.05,.75,0)

pname = TText(.46,.21,'fEventOffset')

pname.SetTextFont(72)

pname.SetTextSize(0.018)

pname.Draw()

pname.DrawText(.44,.11,'fBuffer')

pname.DrawText(.42,.01,'fZipBuffer')

pname.DrawText(.26,.81,'fLeaves = TObjArray of TLeaf')

pname.DrawText(.24,.40,'fBasketEvent')

pname.DrawText(.22,.31,'fBaskets = TObjArray of TBasket')

pname.DrawText(.20,1.0,'fBranches = TObjArray of TBranch')

ntleaf = TPaveText(0.30,.42,.62,.7)

ntleaf.SetTextSize(0.014)

ntleaf.SetFillColor(leafcolor)

ntleaf.SetTextAlign(12)

ntleaf.AddText('fLen: number of fixed elements')

ntleaf.AddText('fLenType: number of bytes of data type')

ntleaf.AddText('fOffset: relative to Leaf0-fAddress')

ntleaf.AddText('fNbytesIO: number of bytes used for I/O')

ntleaf.AddText('fIsPointer: True if pointer')

ntleaf.AddText('fIsRange: True if leaf has a range')

ntleaf.AddText('fIsUnsigned: True if unsigned')

ntleaf.AddText('*fLeafCount: points to Leaf counter')

ntleaf.AddText(' ')

ntleaf.AddLine(0,0,0,0)

ntleaf.AddText('fName = Leaf name')

ntleaf.AddText('fTitle = Leaf type (see Type codes)')

ntleaf.Draw()

type = TPaveText(.65,.42,.95,.7)

type.SetTextAlign(12)

type.SetFillColor(leafcolor)

type.AddText(' ')

type.AddText('C : a character string')

type.AddText('B : an 8 bit signed integer')

type.AddText('b : an 8 bit unsigned integer')

type.AddText('S : a 16 bit signed short integer')

type.AddText('s : a 16 bit unsigned short integer')

type.AddText('I : a 32 bit signed integer')

type.AddText('i : a 32 bit unsigned integer')

type.AddText('F : a 32 bit floating point')

type.AddText('D : a 64 bit floating point')

type.AddText('TXXXX : a class name TXXXX')

type.Draw()

typecode = TPaveLabel(.7,.68,.9,.72,'fType codes')

typecode.SetFillColor(leafcolor)

typecode.Draw()

ldot.DrawLine(.4,.75,.30,.7)

ldot.DrawLine(.5,.75,.62,.7)

ntbasket = TPaveText(0.02,-0.07,0.35,.25)

ntbasket.SetFillColor(basketcolor)

ntbasket.SetTextSize(0.014)

ntbasket.SetTextAlign(12)

ntbasket.AddText('fNbytes: Size of compressed Basket')

ntbasket.AddText('fObjLen: Size of uncompressed Basket')

ntbasket.AddText('fDatime: Date/Time when written to store')

ntbasket.AddText('fKeylen: Number of bytes for the key')

ntbasket.AddText('fCycle : Cycle number')

ntbasket.AddText('fSeekKey: Pointer to Basket on file')

ntbasket.AddText('fSeekPdir: Pointer to directory on file')

ntbasket.AddText("fClassName: 'TBasket'")

ntbasket.AddText('fName: Branch name')

ntbasket.AddText('fTitle: Tree name')

ntbasket.AddText(' ')

ntbasket.AddLine(0,0,0,0)

ntbasket.AddText('fNevBuf: Number of events in Basket')

ntbasket.AddText('fLast: pointer to last used byte in Basket')

ntbasket.Draw()

ldot.DrawLine(.4,.3,0.02,0.25)

ldot.DrawLine(.5,.25,0.35,-.07)

ldot.DrawLine(.5,.3,0.35,0.25)

ntbranch = TPaveText(0.02,0.40,0.18,0.68)

ntbranch.SetFillColor(branchcolor)

ntbranch.SetTextSize(0.015)

ntbranch.SetTextAlign(12)

ntbranch.AddText('fBasketSize')

ntbranch.AddText('fEventOffsetLen')

ntbranch.AddText('fMaxBaskets')

ntbranch.AddText('fEntries')

ntbranch.AddText('fAddress of Leaf0')

ntbranch.AddText(' ')

ntbranch.AddLine(0,0,0,0)

ntbranch.AddText('fName: Branchname')

ntbranch.AddText('fTitle: leaflist')

ntbranch.Draw()

ldot.DrawLine(.2,.97,.02,.68)

ldot.DrawLine(.35,.97,.18,.68)

ldot.DrawLine(.35,.87,.18,.40)

basketstore = TPavesText(.8,-0.088,0.952,-0.0035,7,'tr')

basketstore.SetFillColor(28)

basketstore.AddText('Baskets')

basketstore.AddText('Stores')

basketstore.Draw()

c1.Update()


gBenchmark.Show('tree')

TArrow
Draw all kinds of Arrows.
Definition TArrow.h:29

TCanvas
The Canvas class.
Definition TCanvas.h:23

TLine
Use the TLine constructor to create a simple line.
Definition TLine.h:22

TPaveLabel
A Pave (see TPave) with a text centered in the Pave.
Definition TPaveLabel.h:20

TPaveText
A Pave (see TPave) with text, lines or/and boxes inside.
Definition TPaveText.h:21

TPavesText
A PaveText (see TPaveText) with several stacked paves.
Definition TPavesText.h:18

TText
Base class for several text objects.
Definition TText.h:22