KVIDGridEditorCanvas.cpp

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//Created by KVClassFactory on Fri Feb 17 17:47:35 2012
//Author: dgruyer
 
#include "KVIDGridEditorCanvas.h"
#include "KVIDGridEditor.h"
#include "TROOT.h"
#include "TBox.h"
#include "TAxis.h"
#include "TContextMenu.h"
#include "TRootCanvas.h"
#include "TGWindow.h"
#include <KeySymbols.h>
#include "TVirtualX.h"
 
ClassImp(KVIDGridEditorCanvas)
 
 
 
 
KVIDGridEditorCanvas::KVIDGridEditorCanvas(const char* name, const char* title, Int_t ww, Int_t wh): KVCanvas(name, title, ww, wh)
{
//     gIDGridEditorCanvas = this;
//     fKeyHandler = new KeyHandler(this);
}
 
 
 
 
 
KVIDGridEditorCanvas::KVIDGridEditorCanvas()
{
   // Default constructor
}
 
 
 
 
KVIDGridEditorCanvas::~KVIDGridEditorCanvas()
{
   // Destructor
}
 
 
 
 
void KVIDGridEditorCanvas::HandleInput(EEventType event, Int_t px, Int_t py)
{
   // Handle Input Events.
   //
   //  Handle input events, like button up/down in current canvas.
 
   TPad*    pad;
   TPad*    prevSelPad = (TPad*) fSelectedPad;
   TObject* prevSelObj = fSelected;
 
   fPadSave = (TPad*)gPad;
   cd();        // make sure this canvas is the current canvas
 
   fEvent  = event;
   fEventX = px;
   fEventY = py;
 
   switch (event) {
 
      case kMouseMotion:
         // highlight object tracked over
         pad = Pick(px, py, prevSelObj);
         if (!pad) return;
 
         EnterLeave(prevSelPad, prevSelObj);
 
         gPad = pad;   // don't use cd() we will use the current
         // canvas via the GetCanvas member and not via
         // gPad->GetCanvas
 
         fSelected->ExecuteEvent(event, px, py);
 
         RunAutoExec();
 
         break;
 
      case kMouseEnter:
         // mouse enters canvas
         if (!fDoubleBuffer) FeedbackMode(kTRUE);
         break;
 
      case kMouseLeave:
         // mouse leaves canvas
         {
            // force popdown of tooltips
            TObject* sobj = fSelected;
            TPad*    spad = fSelectedPad;
            fSelected     = 0;
            fSelectedPad  = 0;
            EnterLeave(prevSelPad, prevSelObj);
            fSelected     = sobj;
            fSelectedPad  = spad;
            if (!fDoubleBuffer) FeedbackMode(kFALSE);
         }
         break;
 
      case kButton1Double:
      // triggered on the second button down within 350ms and within
      // 3x3 pixels of the first button down, button up finishes action
 
      case kButton1Down:
         // find pad in which input occured
         pad = Pick(px, py, prevSelObj);
         if (!pad) return;
 
         gPad = pad;   // don't use cd() because we won't draw in pad
         // we will only use its coordinate system
 
         if (fSelected) {
            FeedbackMode(kTRUE);   // to draw in rubberband mode
            if (!fSelected->InheritsFrom("TPaveLabel")) fSelected->ExecuteEvent(event, px, py);
 
            RunAutoExec();
 
            if (fSelected && fSelected->InheritsFrom("TH2")) {
               oldx = GetEventX();
               oldy = GetEventY();
               xmin = AbsPixeltoX(oldx);
               ymin = AbsPixeltoY(oldy);
               gVirtualX->DrawBox(XtoAbsPixel(xmin), YtoAbsPixel(ymin), oldx, oldy, TVirtualX::kHollow);
            }
 
         }
 
         break;
 
      case kButton1Motion:
         if (fSelected) {
            if (fSelected->InheritsFrom("TH2")) {
               gVirtualX->DrawBox(XtoAbsPixel(xmin), YtoAbsPixel(ymin), oldx, oldy, TVirtualX::kHollow);
               oldx = GetEventX();
               oldy = GetEventY();
               gVirtualX->DrawBox(XtoAbsPixel(xmin), YtoAbsPixel(ymin), oldx, oldy, TVirtualX::kHollow);
               moved = true;
            }
         }
      case kButton1ShiftMotion: //8 == kButton1Motion + shift modifier
         if (fSelected) {
            gPad = fSelectedPad;
 
            if (!fSelected->InheritsFrom("TPaveLabel")) fSelected->ExecuteEvent(event, px, py);
            gVirtualX->Update();
 
            if (!fSelected->InheritsFrom(TAxis::Class()) && (!fSelected->InheritsFrom("TPaveLabel"))) {
               Bool_t resize = kFALSE;
               if (fSelected->InheritsFrom(TBox::Class()))
                  resize = ((TBox*)fSelected)->IsBeingResized();
               if (fSelected->InheritsFrom(TVirtualPad::Class()))
                  resize = ((TVirtualPad*)fSelected)->IsBeingResized();
 
               if ((!resize && TestBit(kMoveOpaque)) || (resize && TestBit(kResizeOpaque))) {
                  gPad = fPadSave;
                  Update();
                  FeedbackMode(kTRUE);
               }
            }
 
            RunAutoExec();
         }
 
         break;
 
      case kButton1Up:
 
         if (fSelected) {
            gPad = fSelectedPad;
 
            if (!fSelected->InheritsFrom("TPaveLabel")) fSelected->ExecuteEvent(event, px, py);
 
            if (fPadSave)
               gPad = fPadSave;
            else {
               gPad     = this;
               fPadSave = this;
            }
            if (fSelected->InheritsFrom("TH2") && moved) {
               xmax = AbsPixeltoX(GetEventX());
               ymax = AbsPixeltoY(GetEventY());
               Double_t toto = 0;
               if (xmax < xmin) {
                  toto = xmax;
                  xmax = xmin;
                  xmin = toto;
               }
               if (ymax < ymin) {
                  toto = ymax;
                  ymax = ymin;
                  ymin = toto;
               }
               ZoomSelected((TH2*)fSelected);
               moved = false;
            }
 
            RunAutoExec();
 
            Update();    // before calling update make sure gPad is reset
         }
         break;
 
//*-*----------------------------------------------------------------------
 
      case kButton2Down:
         // find pad in which input occured
         pad = Pick(px, py, prevSelObj);
         if (!pad) return;
 
         gPad = pad;   // don't use cd() because we won't draw in pad
         // we will only use its coordinate system
 
         FeedbackMode(kTRUE);
 
         if (!fSelected->InheritsFrom("TH1")) {
            fSelected->Pop();            // pop object to foreground
            pad->cd();                 // and make its pad the current pad
         }
         if (fSelected->InheritsFrom("TH2")) {
            // implement pan & scan
            X0 = px;
            Y0 = py;  // u clikd here
            theXaxis = ((TH2*)fSelected)->GetXaxis();
            theYaxis = ((TH2*)fSelected)->GetYaxis();
            NXbins = theXaxis->GetNbins();  // maximum bin number in X
            NYbins = theYaxis->GetNbins();  // maximum bin number in Y
            Xf1 = Xfirst0 = theXaxis->GetFirst(); // initial displayed bin range in X
            Xl1 = Xlast0 = theXaxis->GetLast();
            Yf1 = Yfirst0 = theYaxis->GetFirst(); // initial displayed bin range in Y
            Yl1 = Ylast0 = theYaxis->GetLast();
            // size of axes in pixels
            Int_t pixelWidthX = gPad->XtoAbsPixel(gPad->GetUxmax()) - gPad->XtoAbsPixel(gPad->GetUxmin());
            Int_t pixelWidthY = gPad->YtoAbsPixel(gPad->GetUymax()) - gPad->YtoAbsPixel(gPad->GetUymin());
            // sizes of bins in pixels
            NdisXbins = Xlast0 - Xfirst0 + 1;
            NdisYbins = Ylast0 - Yfirst0 + 1;
            XbinPixel = pixelWidthX / (1.0 * NdisXbins);
            YbinPixel = pixelWidthY / (1.0 * NdisYbins);
         }
 
         if (gDebug)
            printf("Current Pad: %s / %s\n", pad->GetName(), pad->GetTitle());
 
         // loop over all canvases to make sure that only one pad is highlighted
         {
            TIter next(gROOT->GetListOfCanvases());
            TCanvas* tc;
            while ((tc = (TCanvas*)next()))
               tc->Update();
         }
 
         /*if (pad->GetGLDevice() != -1 && fSelected)
            fSelected->ExecuteEvent(event, px, py);*/
 
         break;   // don't want fPadSave->cd() to be executed at the end
 
      case kButton2Motion:
         if (fSelected && fSelected->InheritsFrom("TH2")) {
            // implement pan & scan
            Int_t dX = px - X0; // how far have i moved ?
            Int_t dY = py - Y0;
            Int_t dXbins = dX / XbinPixel;
            Int_t dYbins = dY / YbinPixel;
            Bool_t changed = kFALSE;
            Int_t newXfirst = Xfirst0 - dXbins;
            Int_t newXlast;
            if (newXfirst < 1) {
               newXfirst = 1;
               newXlast = NdisXbins;
            }
            else {
               newXlast = Xlast0 - dXbins;
               if (newXlast > NXbins) {
                  newXlast = NXbins;
                  newXfirst = newXlast - NdisXbins + 1;
               }
            }
            if (newXfirst != Xf1) {
               Xf1 = newXfirst;
               Xl1 = newXlast;
               theXaxis->SetRange(Xf1, Xl1);
               changed = kTRUE;
            }
            Int_t newYfirst = Yfirst0 - dYbins;
            Int_t newYlast;
            if (newYfirst < 1) {
               newYfirst = 1;
               newYlast = NdisYbins;
            }
            else {
               newYlast = Ylast0 - dYbins;
               if (newYlast > NYbins) {
                  newYlast = NYbins;
                  newYfirst = newYlast - NdisYbins + 1;
               }
            }
            if (newYfirst != Yf1) {
               Yf1 = newYfirst;
               Yl1 = newYlast;
               theYaxis->SetRange(Yf1, Yl1);
               changed = kTRUE;
            }
            if (changed) {
               Modified();
               Update();
            }
         }
         break;
 
      case kButton2Up:
         if (fSelected) {
            gPad = fSelectedPad;
 
            if (!fSelected->InheritsFrom("TPaveLabel")) fSelected->ExecuteEvent(event, px, py);
            RunAutoExec();
         }
         break;
 
      case kButton2Double:
         break;
 
//*-*----------------------------------------------------------------------
 
      case kButton3Down:
         // popup context menu
         pad = Pick(px, py, prevSelObj);
         if (!pad) return;
 
         if (!fDoubleBuffer) FeedbackMode(kFALSE);
 
         if (fContextMenu && !fSelected->TestBit(kNoContextMenu) &&
               !pad->TestBit(kNoContextMenu) && !TestBit(kNoContextMenu) && (!fSelected->InheritsFrom("TPaveLabel")))
            fContextMenu->Popup(px, py, fSelected, this, pad);
 
         break;
 
      case kButton3Motion:
         break;
 
      case kButton3Up:
         if (!fDoubleBuffer) FeedbackMode(kTRUE);
         break;
 
      case kButton3Double:
         break;
 
      case kESC:
         RunAutoExec();
         break;
 
      case kKeyPress:
         if (!fSelectedPad || !fSelected) return;
         gPad = fSelectedPad;   // don't use cd() because we won't draw in pad
         // we will only use its coordinate system
         if (!fSelected->InheritsFrom("TPaveLabel")) fSelected->ExecuteEvent(event, px, py);
 
         HandleKey(px, py);
         RunAutoExec();
 
 
         break;
      case kButton1Shift:
         // Try to select
         pad = Pick(px, py, prevSelObj);
 
         if (!pad) return;
 
         EnterLeave(prevSelPad, prevSelObj);
 
         gPad = pad;   // don't use cd() we will use the current
         // canvas via the GetCanvas member and not via
         // gPad->GetCanvas
         if (!fSelected->InheritsFrom("TPaveLabel")) fSelected->ExecuteEvent(event, px, py);
         RunAutoExec();
 
         break;
      case kWheelUp:
      case kWheelDown:
         pad = Pick(px, py, prevSelObj);
         if (!pad) return;
 
         gPad = pad;
//      if(!fSelected->InheritsFrom("TAxis")) fSelected->ExecuteEvent(event, px, py);
 
         RunAutoExec();
 
         break;
      default:
         break;
   }
 
   if (fPadSave && event != kButton2Down)
      fPadSave->cd();
 
   if (event != kMouseLeave) { // signal was already emitted for this event
      ProcessedEvent(event, px, py, fSelected);  // emit signal
      DrawEventStatus(event, px, py, fSelected);
   }
}
 
 
 
 
Bool_t KVIDGridEditorCanvas::HandleKey(Int_t px, Int_t py)
{
   if (gIDGridEditor) gIDGridEditor->HandleKey(px, py);
   return kTRUE;
}