KVLVEntry.cpp

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/*
$Id: KVLVEntry.cpp,v 1.3 2009/04/28 09:11:29 franklan Exp $
$Revision: 1.3 $
$Date: 2009/04/28 09:11:29 $
*/
 
//Created by KVClassFactory on Wed Apr  9 13:55:03 2008
//Author: franklan
 
#include "KVLVEntry.h"
#include "TInterpreter.h"
#include "TMethodCall.h"
#include "TGPicture.h"
#include "TGResourcePool.h"
#include "TGTextEntry.h"
#include "TVirtualX.h"
 
ClassImp(KVLVEntry)
 
 
Pixel_t KVLVEntry::fgGreyPixel = 0;
Pixel_t KVLVEntry::fgBGColor = 0;
 
 
 
KVLVEntry::KVLVEntry(TObject* obj, const KVLVContainer* cnt,
                     UInt_t ncols, KVLVColumnData** coldata)
   : TGLVEntry(cnt, TString(coldata[0]->GetDataString(obj)),
               TString(obj->ClassName()), 0, kVerticalFrame, GetWhitePixel()), fDisconnectRefresh(kFALSE)
{
   // Default constructor
   fEditMode = kFALSE;
   if (!fgGreyPixel) {
      if (!fClient->GetColorByName("#f0f0f0", fgGreyPixel)) fgGreyPixel = 0;
      fgBGColor = fgWhitePixel;
   }
   fBGColor = -1;
 
   fUserData = obj;
   fSubnames = new TGString* [ncols];
   fBoolean = new Bool_t [ncols];
   for (int i = 0; i < (int)ncols - 1; i++) {
      fSubnames[i] = new TGString(coldata[i + 1]->GetDataString(obj));
      fBoolean[i] = coldata[i + 1]->IsBoolean();
   }
   fSubnames[ncols - 1] = 0;
   fBoolean[ncols - 1] = kFALSE;
   int j;
   for (j = 0; fSubnames[j] != 0; ++j)
      ;
   fCtw = new int[j + 1];
   fCtw[j] = 0;
   for (int i = 0; fSubnames[i] != 0; ++i)
      fCtw[i] = gVirtualX->TextWidth(fFontStruct, fSubnames[i]->GetString(),
                                     fSubnames[i]->GetLength());
   SetWindowName();
 
   // to update display of object characteristics when object is changed,
   // the object must have a "Connect" method (for signals-slots) and a "Modified"
   // method which emits the "Modified" signal when object is changed.
   // N.B. the object does not have to inherit from TQObject (can use RQ_OBJECT macro)
   // the "Modified" signal is connected to the KVLVEntry::Refresh method
   if (obj->IsA()->GetMethodAllAny("Modified") && obj->IsA()->GetMethodAllAny("Connect")) {
      gInterpreter->Execute(obj, obj->IsA(), "Connect",
                            Form("\"Modified()\",\"KVLVEntry\",(KVLVEntry*)%ld,\"Refresh()\"", (ULong_t)this));
      fDisconnectRefresh = kTRUE;
   }
 
   fColoured = kFALSE;
   // objects of classes with a method "const Char_t* GetLVEntryColour()" will be displayed with
   // the background colour returned by this method (either in hexadecimal format, i.e. "#f0f0f0"
   // or by name, i.e. "pink")
   if (obj->IsA()->GetMethodAllAny("GetLVEntryColour")) {
 
      TMethodCall mt;
      mt.InitWithPrototype(obj->IsA(), "GetLVEntryColour", "");
      if (mt.IsValid()) {
         if (mt.ReturnType() == TMethodCall::kString) {
            Char_t* ret;
            mt.Execute(obj, "", &ret);
            if (fClient->GetColorByName(ret, fBGColor)) {
               fColoured = kTRUE;
            }
            else {
               Warning("KVLVEntry", "Unknown color %s requested for entry", ret);
            }
         }
         else {
            Warning("KVLVEntry", "Object of class %s has GetLVEntryColour() method with wrong return type",
                    obj->ClassName());
         }
      }
      else {
         Warning("KVLVEntry", "GetLVEntryColour() method not valid for class %s", obj->ClassName());
      }
   }
}
 
 
 
 
KVLVEntry::KVLVEntry(TObject* obj, const Char_t* objclass, const KVLVContainer* cnt, UInt_t ncols, KVLVColumnData** coldata)
   : TGLVEntry(cnt, TString(coldata[0]->GetDataString(obj)),
               TString(objclass), 0, kVerticalFrame, GetWhitePixel()), fDisconnectRefresh(kFALSE)
{
   // Exactly same as default constructor, but class of object used by TGLVEntry is given separately,
   // not neccessarily the same as obj->ClassName()
 
   fEditMode = kFALSE;
   if (!fgGreyPixel) {
      if (!fClient->GetColorByName("#f0f0f0", fgGreyPixel)) fgGreyPixel = 0;
      fgBGColor = fgWhitePixel;
   }
   fBGColor = -1;
 
   fUserData = obj;
   fSubnames = new TGString* [ncols];
   fBoolean = new Bool_t [ncols];
   for (int i = 0; i < (int)ncols - 1; i++) {
      fSubnames[i] = new TGString(coldata[i + 1]->GetDataString(obj));
      fBoolean[i] = coldata[i + 1]->IsBoolean();
   }
   fSubnames[ncols - 1] = 0;
   fBoolean[ncols - 1] = kFALSE;
   int j;
   for (j = 0; fSubnames[j] != 0; ++j)
      ;
   fCtw = new int[j + 1];
   fCtw[j] = 0;
   for (int i = 0; fSubnames[i] != 0; ++i)
      fCtw[i] = gVirtualX->TextWidth(fFontStruct, fSubnames[i]->GetString(),
                                     fSubnames[i]->GetLength());
   SetWindowName();
 
   // to update display of object characteristics when object is changed,
   // the object must have a "Connect" method (for signals-slots) and a "Modified"
   // method which emits the "Modified" signal when object is changed.
   // N.B. the object does not have to inherit from TQObject (can use RQ_OBJECT macro)
   // the "Modified" signal is connected to the KVLVEntry::Refresh method
   if (obj->IsA()->GetMethodAllAny("Modified") && obj->IsA()->GetMethodAllAny("Connect")) {
      gInterpreter->Execute(obj, obj->IsA(), "Connect",
                            Form("\"Modified()\",\"KVLVEntry\",(KVLVEntry*)%ld,\"Refresh()\"", (ULong_t)this));
      fDisconnectRefresh = kTRUE;
   }
}
 
 
 
 
KVLVEntry::~KVLVEntry()
{
   // Dtor
   // disconnect fUserData object's Modified signal from our Refresh method if connected
   delete [] fBoolean;
   if (fDisconnectRefresh && fUserData) {
      TObject* obj = (TObject*)fUserData;
      if (obj && obj->TestBit(kNotDeleted)) gInterpreter->Execute(obj, obj->IsA(), "Disconnect",
               Form("\"Modified()\",(KVLVEntry*)%ld,\"Refresh()\"", (ULong_t)this));
   }
}
 
 
 
 
void KVLVEntry::Refresh()
{
   // Update the object characteristics and ask for redraw
 
   KVLVContainer* cnt = (KVLVContainer*)GetParent();
   TObject* obj = (TObject*)fUserData;
   SetItemName(cnt->fColData[0]->GetDataString(obj));
   for (int i = 0; fSubnames[i] != 0; i++) fSubnames[i]->SetString(cnt->fColData[i + 1]->GetDataString(obj));
   for (int i = 0; fSubnames[i] != 0; ++i)
      fCtw[i] = gVirtualX->TextWidth(fFontStruct, fSubnames[i]->GetString(),
                                     fSubnames[i]->GetLength());
   SetWindowName();
   TGPosition pos = cnt->GetPagePosition();
   cnt->DrawRegion(GetX() - pos.fX, GetY() - pos.fY, GetWidth(), GetHeight());
}
 
 
 
 
 
void KVLVEntry::DrawCopy(Handle_t id, Int_t x, Int_t y)
{
   // Draw list view item in other window.
   // List view item is placed and layout in the container frame,
   // but is drawn in viewport.
   //
   // This is a line for line copy of TGLVEntry::DrawCopy from ROOT v5.22/00,
   // but we alternate the background colour between white and light grey, in
   // order to make the list easier to read.
   //
   // If fColoured=kTRUE (i.e. if entry has a valid GetLVEntryColor method
   // which returns a recognised color), the requested background color is used
 
   KVLVContainer* cnt = (KVLVContainer*)GetParent();
   if (!fColoured) {
      if ((int)fBGColor == -1 || cnt->IsBeingSorted()) {
         fBGColor = fgBGColor;
         if (fgBGColor == fgWhitePixel) fgBGColor = fgGreyPixel;
         else
            fgBGColor = fgWhitePixel;
      }
   }
 
   Int_t ix, iy, lx, ly;
   Int_t max_ascent, max_descent;
 
   gVirtualX->GetFontProperties(fFontStruct, max_ascent, max_descent);
   fTWidth = gVirtualX->TextWidth(fFontStruct, fItemName->GetString(), fItemName->GetLength());
   fTHeight = max_ascent + max_descent;
 
   if (fViewMode == kLVLargeIcons) {
      ix = (fWidth - fCurrent->GetWidth()) >> 1;
      iy = 0;
      lx = (fWidth - fTWidth) >> 1;
      ly = fHeight - (fTHeight + 1) - 2;
   }
   else {
      ix = 0;
      iy = (fHeight - fCurrent->GetHeight()) >> 1;
      lx = fCurrent->GetWidth() + 2;
      ly = (fHeight - (fTHeight + 1)) >> 1;
   }
 
   //    if ((fChecked) && (fCheckMark)) {
   //       if (fViewMode == kLVLargeIcons) {
   //          fCheckMark->Draw(id, fNormGC, x + ix + 8, y + iy + 8);
   //          gVirtualX->SetForeground(fNormGC, fgWhitePixel);
   //          gVirtualX->FillRectangle(id, fNormGC, x + lx, y + ly, fTWidth, fTHeight + 1);
   //          gVirtualX->SetForeground(fNormGC, fgBlackPixel);
   //       }
   //       else {
   //          fCheckMark->Draw(id, fNormGC, x + ix, y + iy);
   //          gVirtualX->SetForeground(fNormGC, fgWhitePixel);
   //          gVirtualX->FillRectangle(id, fNormGC, x + lx, y + ly, fTWidth, fTHeight + 1);
   //          gVirtualX->SetForeground(fNormGC, fgBlackPixel);
   //       }
   //    }
   // This if tries to print the elements with ... appened at the end if
   // the widht of the string is longer than that of the column
   if (fViewMode == kLVDetails && fSubnames && fCpos && fJmode && fCtw) {
      TString tmpString = *fItemName;
      Int_t ftmpWidth = gVirtualX->TextWidth(fFontStruct, tmpString,
                                             tmpString.Length());
      if (ftmpWidth > (fCpos[0] - lx)) {
         for (Int_t j = fItemName->Length() - 1 ; j > 0; j--) {
            tmpString = (*fItemName)(0, j) + "...";
            ftmpWidth = gVirtualX->TextWidth(GetDefaultFontStruct(), tmpString,
                                             tmpString.Length());
            if (ftmpWidth <= (fCpos[0] - lx)) {
               break;
            }
         }
      }
      if (fActive) {
         if (fSelPic) fSelPic->Draw(id, fNormGC, x + ix, y + iy);
         gVirtualX->SetForeground(fNormGC, fgDefaultSelectedBackground);
         gVirtualX->FillRectangle(id, fNormGC, x + lx, y + ly, fCpos[0] - lx, fTHeight + 1);
         gVirtualX->SetForeground(fNormGC, fClient->GetResourcePool()->GetSelectedFgndColor());
      }
      else {
         // inactive list items are drawn with alternating background colours: white, grey, white, grey, ...
         fCurrent->Draw(id, fNormGC, x + ix, y + iy);
         //gVirtualX->SetForeground(fNormGC, fgWhitePixel);
         gVirtualX->SetForeground(fNormGC, fBGColor);// use current background colour
         gVirtualX->FillRectangle(id, fNormGC, x + lx, y + ly, fCpos[0] - lx, fTHeight + 1);
         gVirtualX->SetForeground(fNormGC, fgBlackPixel);
      }
      TGString tmpTGString(tmpString);
      tmpTGString.Draw(id, fNormGC, x + lx, y + ly + max_ascent);
   }
   else {
      if (fActive) {
         if (fSelPic) fSelPic->Draw(id, fNormGC, x + ix, y + iy);
         gVirtualX->SetForeground(fNormGC, fgDefaultSelectedBackground);
         gVirtualX->FillRectangle(id, fNormGC, x + lx, y + ly, fTWidth, fTHeight + 1);
         gVirtualX->SetForeground(fNormGC, fClient->GetResourcePool()->GetSelectedFgndColor());
      }
      else {
         fCurrent->Draw(id, fNormGC, x + ix, y + iy);
         gVirtualX->SetForeground(fNormGC, fgWhitePixel);
         gVirtualX->FillRectangle(id, fNormGC, x + lx, y + ly, fTWidth, fTHeight + 1);
         gVirtualX->SetForeground(fNormGC, fgBlackPixel);
      }
      fItemName->Draw(id, fNormGC, x + lx, y + ly + max_ascent);
   }
   gVirtualX->SetForeground(fNormGC, fgBlackPixel);
 
   if (fViewMode == kLVDetails) {
      if (fSubnames && fCpos && fJmode && fCtw) {
         int i;
 
         // Again fixes the size of the strings
         for (i = 0; fSubnames[i] != 0; ++i) {
            TString tmpString = *fSubnames[i];
            Int_t ftmpWidth = gVirtualX->TextWidth(fFontStruct, tmpString,
                                                   tmpString.Length());
            if (ftmpWidth > (fCpos[i + 1] - fCpos[i])) {
               for (int j = fSubnames[i]->Length() - 1 ; j > 0; j--) {
                  tmpString = (*fSubnames[i])(0, j) + "...";
                  ftmpWidth = gVirtualX->TextWidth(GetDefaultFontStruct(),
                                                   tmpString,
                                                   tmpString.Length());
                  if (ftmpWidth <= (fCpos[i + 1] - fCpos[i])) {
                     break;
                  }
               }
            }
            if (fCpos[i] == 0)
               break;
            if (fJmode[i] == kTextRight)
               lx = fCpos[i + 1] - ftmpWidth - 2;
            else if (fJmode[i] == kTextCenterX)
               lx = (fCpos[i] + fCpos[i + 1] - ftmpWidth) >> 1;
            else // default to TEXT_LEFT
               lx = fCpos[i] + 2;
 
            //if (x + lx < 0) continue; // out of left boundary or mess in name
            if (fActive) {
               //if (fSelPic) fSelPic->Draw(id, fNormGC, x + ix, y + iy);
               gVirtualX->SetForeground(fNormGC, fgDefaultSelectedBackground);
               gVirtualX->FillRectangle(id, fNormGC, x + fCpos[i], y + ly, fCpos[i + 1] - fCpos[i], fTHeight + 1);
               gVirtualX->SetForeground(fNormGC, fClient->GetResourcePool()->GetSelectedFgndColor());
            }
            else {
               // inactive list items are drawn with alternating background colours: white, grey, white, grey, ...
               //fCurrent->Draw(id, fNormGC, x + ix, y + iy);
               //gVirtualX->SetForeground(fNormGC, fgWhitePixel);
               gVirtualX->SetForeground(fNormGC, fBGColor);// use current background colour
               gVirtualX->FillRectangle(id, fNormGC, x + fCpos[i], y + ly, fCpos[i + 1] - fCpos[i], fTHeight + 1);
               gVirtualX->SetForeground(fNormGC, fgBlackPixel);
            }
            if (fBoolean[i]) {
               if (tmpString == "1" && fCheckMark) {
                  // boolean column data drawn with a tick mark
                  fCheckMark->Draw(id, fNormGC, x + lx, y + ly);
               }
            }
            else {
               TGString tmpTGString(tmpString);
               tmpTGString.Draw(id, fNormGC, x + lx, y + ly + max_ascent);
            }
         }
      }
   }
 
}