//*CMZ : 2.21/08 11/03/99 16.36.20 by Fons Rademakers
//*CMZ : 2.20/00 03/11/98 19.52.59 by Fons Rademakers
//*CMZ : 2.00/10 16/07/98 18.50.45 by Fons Rademakers
//*-- Author : Fons Rademakers 15/07/98
//*KEEP,CopyRight,T=C.
/*************************************************************************
* Copyright(c) 1995-1999, The ROOT System, All rights reserved. *
* Authors: Rene Brun, Fons Rademakers. *
* For list of contributors see $ROOTSYS/AA_CREDITS. *
* *
* Permission to use, copy, modify and distribute this software and its *
* documentation for non-commercial purposes is hereby granted without *
* fee, provided that the above copyright notice appears in all copies *
* and that both the copyright notice and this permission notice appear *
* in the supporting documentation. The authors make no claims about the *
* suitability of this software for any purpose. It is provided "as is" *
* without express or implied warranty. *
*************************************************************************/
//*KEND.
//////////////////////////////////////////////////////////////////////////
// //
// TRootEmbeddedCanvas //
// //
// This class creates a TGCanvas in which a TCanvas is created. Use //
// GetCanvas() to get a pointer to the TCanvas. //
// //
//////////////////////////////////////////////////////////////////////////
//*KEEP,TRootEmbeddedCanvas.
#include "TRootEmbeddedCanvas.h"
//*KEEP,TCanvas.
#include "TCanvas.h"
//*KEEP,TROOT.
#include "TROOT.h"
//*KEND.
//////////////////////////////////////////////////////////////////////////
// //
// TRootEmbeddedContainer //
// //
// Utility class used by TRootEmbeddedCanvas. The TRootEmbeddedContainer//
// is the frame embedded in the TGCanvas widget. The ROOT graphics goes //
// into this frame. This class is used to enable input events on this //
// graphics frame and forward the events to the TRootEmbeddedCanvas //
// handlers. //
// //
//////////////////////////////////////////////////////////////////////////
class TRootEmbeddedContainer : public TGCompositeFrame {
private:
TRootEmbeddedCanvas *fCanvas; // pointer back to embedded canvas
public:
TRootEmbeddedContainer(TRootEmbeddedCanvas *c, Window_t id, const TGWindow *parent);
Bool_t HandleButton(Event_t *ev)
{ return fCanvas->HandleContainerButton(ev); }
Bool_t HandleDoubleClick(Event_t *ev)
{ return fCanvas->HandleContainerDoubleClick(ev); }
Bool_t HandleConfigureNotify(Event_t *ev)
{ TGFrame::HandleConfigureNotify(ev);
return fCanvas->HandleContainerConfigure(ev); }
Bool_t HandleKey(Event_t *ev)
{ return fCanvas->HandleContainerKey(ev); }
Bool_t HandleMotion(Event_t *ev)
{ return fCanvas->HandleContainerMotion(ev); }
Bool_t HandleExpose(Event_t *ev)
{ return fCanvas->HandleContainerExpose(ev); }
Bool_t HandleCrossing(Event_t *ev)
{ return fCanvas->HandleContainerCrossing(ev); }
};
//______________________________________________________________________________
TRootEmbeddedContainer::TRootEmbeddedContainer(TRootEmbeddedCanvas *c, Window_t id,
const TGWindow *p) : TGCompositeFrame(gClient, id, p)
{
// Create a canvas container.
fCanvas = c;
gGXW->GrabButton(fId, kAnyButton, kAnyModifier,
kButtonPressMask | kButtonReleaseMask,
kNone, kNone);
gGXW->SelectInput(fId, kKeyPressMask | kKeyReleaseMask | kExposureMask |
kPointerMotionMask | kStructureNotifyMask | kLeaveWindowMask);
}
ClassImp(TRootEmbeddedCanvas)
//______________________________________________________________________________
TRootEmbeddedCanvas::TRootEmbeddedCanvas(const char *name, const TGWindow *p,
UInt_t w, UInt_t h, UInt_t options, ULong_t back)
: TGCanvas(p, w, h, options, back)
{
// Create an TCanvas embedded in a TGFrame. A pointer to the TCanvas can
// be obtained via the GetCanvas() member function.
fButton = 0;
fAutoFit = kTRUE;
Int_t wid = gGXW->InitWindow((ULong_t)GetViewPort()->GetId());
Window_t win = gGXW->GetWindowID(wid);
fCanvasContainer = new TRootEmbeddedContainer(this, win, GetViewPort());
SetContainer(fCanvasContainer);
fCanvas = new TCanvas(name, 10, 10, wid);
}
//______________________________________________________________________________
TRootEmbeddedCanvas::~TRootEmbeddedCanvas()
{
// Delete embedded ROOT canvas.
delete fCanvas;
delete fCanvasContainer;
}
//______________________________________________________________________________
Bool_t TRootEmbeddedCanvas::HandleContainerButton(Event_t *event)
{
// Handle mouse button events in the canvas container.
Int_t button = event->fCode;
Int_t x = event->fX;
Int_t y = event->fY;
if (event->fType == kButtonPress) {
fButton = button;
if (button == kButton1)
fCanvas->HandleInput(kButton1Down, x, y);
if (button == kButton2)
fCanvas->HandleInput(kButton2Down, x, y);
if (button == kButton3) {
fCanvas->HandleInput(kButton3Down, x, y);
fButton = 0; // button up is consumed by TContextMenu
}
} else if (event->fType == kButtonRelease) {
if (button == kButton1)
fCanvas->HandleInput(kButton1Up, x, y);
if (button == kButton2)
fCanvas->HandleInput(kButton2Up, x, y);
if (button == kButton3)
fCanvas->HandleInput(kButton3Up, x, y);
fButton = 0;
}
return kTRUE;
}
//______________________________________________________________________________
Bool_t TRootEmbeddedCanvas::HandleContainerDoubleClick(Event_t *event)
{
// Handle mouse button double click events in the canvas container.
Int_t button = event->fCode;
Int_t x = event->fX;
Int_t y = event->fY;
if (button == kButton1)
fCanvas->HandleInput(kButton1Double, x, y);
if (button == kButton2)
fCanvas->HandleInput(kButton2Double, x, y);
if (button == kButton3)
fCanvas->HandleInput(kButton3Double, x, y);
return kTRUE;
}
//______________________________________________________________________________
Bool_t TRootEmbeddedCanvas::HandleContainerConfigure(Event_t *)
{
// Handle configure (i.e. resize) event.
if (fAutoFit) {
fCanvas->Resize();
fCanvas->Update();
}
return kTRUE;
}
//______________________________________________________________________________
Bool_t TRootEmbeddedCanvas::HandleContainerKey(Event_t *event)
{
// Handle keyboard events in the canvas container.
if (event->fType == kGKeyPress) {
fButton = event->fCode;
UInt_t keysym;
char str[2];
gGXW->LookupString(event, str, sizeof(str), keysym);
if (str[0] == 3) // ctrl-c sets the interrupt flag
gROOT->SetInterrupt();
fCanvas->HandleInput(kKeyPress, str[0], 0);
} else if (event->fType == kKeyRelease)
fButton = 0;
return kTRUE;
}
//______________________________________________________________________________
Bool_t TRootEmbeddedCanvas::HandleContainerMotion(Event_t *event)
{
// Handle mouse motion event in the canvas container.
Int_t x = event->fX;
Int_t y = event->fY;
if (fButton == 0)
fCanvas->HandleInput(kMouseMotion, x, y);
if (fButton == kButton1)
fCanvas->HandleInput(kButton1Motion, x, y);
return kTRUE;
}
//______________________________________________________________________________
Bool_t TRootEmbeddedCanvas::HandleContainerExpose(Event_t *event)
{
// Handle expose events.
if (event->fCount == 0)
fCanvas->Flush();
return kTRUE;
}
//______________________________________________________________________________
Bool_t TRootEmbeddedCanvas::HandleContainerCrossing(Event_t *event)
{
// Handle enter/leave events. Only leave is activated at the moment.
if (event->fType == kLeaveNotify)
fCanvas->HandleInput(kMouseLeave, 0, 0);
return kTRUE;
}
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