00001 {
00002
00003
00004
00005
00006 gROOT->Reset();
00007 c1 = new TCanvas("c1","ROOT FilDir description",700,900);
00008 c1->Range(1,1,19,24.5);
00009 TPaveLabel title(4,23,16,24.2,"ROOT File/Directory/Key description");
00010 title.SetFillColor(16);
00011 title.Draw();
00012
00013 Int_t keycolor = 42;
00014 Int_t dircolor = 21;
00015 Int_t objcolor = 46;
00016 TPaveText file(2,19,6,22);
00017 file.SetFillColor(39);
00018 file.Draw();
00019 file.SetTextSize(0.04);
00020 file.AddText("TFile");
00021 file.AddText("Header");
00022 TArrow arrow(6,20.5,17,20.5,0.02,"|>");
00023 arrow.SetFillStyle(1001);
00024 arrow.SetLineWidth(2);
00025 arrow.Draw();
00026 TPaveText free(8,20,11,21);
00027 free.SetFillColor(18);
00028 free.Draw();
00029 free.AddText("First:Last");
00030 TPaveText free2(12,20,15,21);
00031 free2.SetFillColor(18);
00032 free2.Draw();
00033 free2.AddText("First:Last");
00034 TText tfree(6.2,21.2,"fFree = TList of free blocks");
00035 tfree.SetTextSize(0.02);
00036 tfree.Draw();
00037 TText tkeys(5.2,18.2,"fKeys = TList of Keys");
00038 tkeys.SetTextSize(0.02);
00039 tkeys.Draw();
00040 TText tmemory(3.2,15.2,"fListHead = TList of Objects in memory");
00041 tmemory.SetTextSize(0.02);
00042 tmemory.Draw();
00043
00044 arrow.DrawArrow(5,17,17,17,0.02,"|>");
00045 TLine line(5,19,5,17);
00046 line.SetLineWidth(2);
00047 line.Draw();
00048 TPaveText key0(7,16,10,18);
00049 key0.SetTextSize(0.04);
00050 key0.SetFillColor(keycolor);
00051 key0.AddText("Key 0");
00052 key0.Draw();
00053 TPaveText key1(12,16,15,18);
00054 key1.SetTextSize(0.04);
00055 key1.SetFillColor(keycolor);
00056 key1.AddText("Key 1");
00057 key1.Draw();
00058 line.DrawLine(3,19,3,14);
00059 line.DrawLine(3,14,18,14);
00060 TPaveText obj0(5,13,8,15);
00061 obj0.SetFillColor(objcolor);
00062 obj0.AddText("Object");
00063 obj0.Draw();
00064 TPaveText dir1(10,13,13,15);
00065 dir1.SetFillColor(dircolor);
00066 dir1.AddText("SubDir");
00067 dir1.Draw();
00068 TPaveText obj1(15,13,18,15);
00069 obj1.SetFillColor(objcolor);
00070 obj1.AddText("Object");
00071 obj1.Draw();
00072 arrow.DrawArrow(12,11,17,11,0.015,"|>");
00073 arrow.DrawArrow(11,9,17,9,0.015,"|>");
00074 line.DrawLine(12,13,12,11);
00075 line.DrawLine(11,13,11,9);
00076 TPaveText key2(14,10.5,16,11.5);
00077 key2.SetFillColor(keycolor);
00078 key2.AddText("Key 0");
00079 key2.Draw();
00080 TPaveText obj2(14,8.5,16,9.5);
00081 obj2.SetFillColor(objcolor);
00082 obj2.AddText("Object");
00083 obj2.Draw();
00084 TLine ldot(10,15,2,11);
00085 ldot.SetLineStyle(2);
00086 ldot.Draw();
00087 ldot.DrawLine(13,15,8,11);
00088 ldot.DrawLine(13,13,8,5);
00089 TPaveText dirdata(2,5,8,11);
00090 dirdata.SetTextAlign(12);
00091 dirdata.SetFillColor(dircolor);
00092 dirdata.Draw();
00093 dirdata.SetTextSize(0.015);
00094 dirdata.AddText("fModified: True if directory is modified");
00095 dirdata.AddText("fWritable: True if directory is writable");
00096 dirdata.AddText("fDatimeC: Creation Date/Time");
00097 dirdata.AddText("fDatimeM: Last mod Date/Time");
00098 dirdata.AddText("fNbytesKeys: Number of bytes of key");
00099 dirdata.AddText("fNbytesName : Header length up to title");
00100 dirdata.AddText("fSeekDir: Start of Directory on file");
00101 dirdata.AddText("fSeekParent: Start of Parent Directory");
00102 dirdata.AddText("fSeekKeys: Pointer to Keys record");
00103 TPaveText keydata(10,2,17,7);
00104 keydata.SetTextAlign(12);
00105 keydata.SetFillColor(keycolor);
00106 keydata.Draw();
00107 ldot.DrawLine(14,11.5,10,7);
00108 ldot.DrawLine(16,11.5,17,7);
00109 keydata.SetTextSize(0.015);
00110 keydata.AddText("fNbytes: Size of compressed Object");
00111 keydata.AddText("fObjLen: Size of uncompressed Object");
00112 keydata.AddText("fDatime: Date/Time when written to store");
00113 keydata.AddText("fKeylen: Number of bytes for the key");
00114 keydata.AddText("fCycle : Cycle number");
00115 keydata.AddText("fSeekKey: Pointer to Object on file");
00116 keydata.AddText("fSeekPdir: Pointer to directory on file");
00117 keydata.AddText("fClassName: 'TKey'");
00118 keydata.AddText("fName: Object name");
00119 keydata.AddText("fTitle: Object Title");
00120 }
