// @(#)root/gui:$Name: $:$Id: TGCanvas.cxx,v 1.9 2002/09/13 14:12:14 rdm Exp $
// Author: Fons Rademakers 11/01/98
/*************************************************************************
* Copyright (C) 1995-2000, Rene Brun and Fons Rademakers. *
* All rights reserved. *
* *
* For the licensing terms see $ROOTSYS/LICENSE. *
* For the list of contributors see $ROOTSYS/README/CREDITS. *
*************************************************************************/
/**************************************************************************
This source is based on Xclass95, a Win95-looking GUI toolkit.
Copyright (C) 1996, 1997 David Barth, Ricky Ralston, Hector Peraza.
Xclass95 is free software; you can redistribute it and/or
modify it under the terms of the GNU Library General Public
License as published by the Free Software Foundation; either
version 2 of the License, or (at your option) any later version.
**************************************************************************/
//////////////////////////////////////////////////////////////////////////
// //
// TGCanvas and TGViewPort and TGContainer //
// //
// A TGCanvas is a frame containing two scrollbars (a horizontal and //
// a vertical) and a viewport. The viewport acts as the window through //
// which we look at the contents of the container frame. //
// //
// A TGContainer frame manages a content area. It can display and //
// control a hierarchy of multi-column items, and provides the ability //
// to add new items at any time. By default it doesn't map subwindows //
// which are itmes of the container. In this case subwindow must //
// provide DrawCopy method, see for example TGLVEntry class. //
// It is also possible to use option which allow to map subwindows. //
// This option has much slower drawing speed in case of more than 1000 //
// items placed in container. To activate this option the fMapSubwindows//
// data member must be set to kTRUE (for example TTVLVContainer class) //
// //
// The TGContainer class can handle the keys: //
// //
// o F7, Ctnrl-F - activate search dialog //
// o F3, Ctnrl-G - continue search //
// o End - go to the last item in container //
// o Home - go to the first item in container //
// o PageUp,PageDown,arrow keys - navigate inside container //
// o Return/Enter - equivalent to double click of the mouse button //
// o Contrl-A - select/activate all items. //
// o Space - invert selection. //
// //
//////////////////////////////////////////////////////////////////////////
#include "TGCanvas.h"
#include "TGListView.h"
#include "TGScrollBar.h"
#include "TGWidget.h"
#include "TTimer.h"
#include "TMath.h"
#include "KeySymbols.h"
#include "TSystem.h"
#include "TGTextEditDialogs.h"
#include "TGMsgBox.h"
ClassImp(TGCanvas)
ClassImp(TGViewPort)
ClassImp(TGContainer)
const Int_t gAutoScrollFudge = 10;
const Int_t gAcceleration[gAutoScrollFudge+1] = {1,1,1,2,3,4,6,7,8,16,32};
const Int_t gKeyboardTime = 700;
//______________________________________________________________________________
class TGContainerKeyboardTimer : public TTimer {
private:
TGContainer *fContainer;
public:
TGContainerKeyboardTimer(TGContainer *t) : TTimer(gKeyboardTime) { fContainer = t; }
Bool_t Notify();
};
//______________________________________________________________________________
Bool_t TGContainerKeyboardTimer::Notify()
{
// single shot timer
fContainer->SearchPattern();
Reset();
if (gSystem) gSystem->RemoveTimer(this);
return kFALSE;
}
//______________________________________________________________________________
class TGContainerScrollTimer : public TTimer {
private:
TGContainer *fContainer;
public:
TGContainerScrollTimer(TGContainer *t) : TTimer(50) { fContainer = t; }
Bool_t Notify();
};
//______________________________________________________________________________
Bool_t TGContainerScrollTimer::Notify()
{
// on-timeout
fContainer->OnAutoScroll();
Reset();
return kFALSE;
}
//______________________________________________________________________________
TGViewPort::TGViewPort(const TGWindow *p, UInt_t w, UInt_t h,
UInt_t options, ULong_t back) :
TGCompositeFrame(p, w, h, options, back)
{
// Create a viewport object.
fContainer = 0;
fX0 = fY0 = 0;
MapSubwindows();
AddInput(kStructureNotifyMask);
}
//______________________________________________________________________________
void TGViewPort::SetContainer(TGFrame *f)
{
// Add container frame to the viewport. We must make sure that the added
// container is at least a TGCompositeFrame (TGCanvas::AddFrame depends
// on it).
if (!fContainer) {
fContainer = f;
AddFrame(f, 0);
if (fContainer->InheritsFrom(TGContainer::Class())) {
((TGContainer*)fContainer)->fViewPort = this;
((TGContainer*)fContainer)->fCanvas = (TGCanvas*)this->GetParent();
}
}
}
//______________________________________________________________________________
void TGViewPort::SetHPos(Int_t xpos)
{
// moves content of container frame in horizontal direction
Int_t diff;
if (!fContainer) return;
if (!fContainer->InheritsFrom(TGContainer::Class())) {
fContainer->Move(fX0 = xpos, fY0);
return;
} else {
if (((TGContainer*)fContainer)->fMapSubwindows) {
fContainer->Move(fX0 = xpos, fY0);
return;
}
}
if (-xpos<0) diff = 0;
else diff = xpos - fX0;
if (!diff) return;
fX0 = xpos;
gVirtualX->ClearArea(fContainer->GetId(),0,0,fWidth,fHeight);
((TGContainer*)fContainer)->DrawRegion(0,0,fWidth,fHeight);
}
//______________________________________________________________________________
void TGViewPort::SetVPos(Int_t ypos)
{
// moves content of container frame in vertical direction
Int_t diff;
if (!fContainer) return;
// for backward comatibility
if (!fContainer->InheritsFrom(TGContainer::Class())) {
fContainer->Move(fX0, fY0 = ypos);
return;
} else {
if (((TGContainer*)fContainer)->fMapSubwindows) {
fContainer->Move(fX0, fY0 = ypos);
return;
}
}
//
if (-ypos<0) diff = 0;
else diff = ypos - fY0;
if (!diff) return;
fY0 = ypos;
gVirtualX->ClearArea(fContainer->GetId(),0,0,fWidth,fHeight);
((TGContainer*)fContainer)->DrawRegion(0,0,fWidth,fHeight);
}
//______________________________________________________________________________
void TGViewPort::SetPos(Int_t xpos, Int_t ypos)
{
// goto new position
if (!fContainer) return;
SetHPos(fX0 = xpos);
SetVPos(fY0 = ypos);
}
//______________________________________________________________________________
Bool_t TGViewPort::HandleConfigureNotify(Event_t *event)
{
// handle resize events.
if (!fContainer->InheritsFrom(TGContainer::Class())) {
TGFrame::HandleConfigureNotify(event);
return kTRUE;
}
TGContainer *cont = (TGContainer*)fContainer;
cont->DrawRegion(0, 0, fWidth, fHeight);
return kTRUE;
}
//______________________________________________________________________________
TGContainer::TGContainer(const TGWindow *p, UInt_t w, UInt_t h,
UInt_t options, ULong_t back) :
TGCompositeFrame(p, w, h, options, back)
{
// Create a canvas container. This is the (large) frame that contains
// all the list items. It will be shown through a TGViewPort (which is
// created by the TGCanvas).
fMsgWindow = p;
fDragging = kFALSE;
fTotal = fSelected = 0;
fMapSubwindows = kFALSE;
fOnMouseOver = kFALSE;
fLastActiveEl = 0;
fLastDir = kTRUE;
fLastCase = kTRUE;
fKeyTimer = new TGContainerKeyboardTimer(this);
fScrollTimer = new TGContainerScrollTimer(this);
fKeyTimerActive = kFALSE;
fScrolling = kFALSE;
gVirtualX->GrabButton(fId, kAnyButton, kAnyModifier,
kButtonPressMask | kButtonReleaseMask |
kPointerMotionMask, kNone, kNone);
AddInput(kKeyPressMask | kPointerMotionMask);
}
//______________________________________________________________________________
TGContainer::~TGContainer()
{
// Delete canvas container.
if (fScrollTimer) delete fScrollTimer;
if (fKeyTimer) delete fKeyTimer;
}
//______________________________________________________________________________
void TGContainer::Layout()
{
// layout container entries
ClearViewPort();
TGCompositeFrame::Layout();
}
//______________________________________________________________________________
void TGContainer::CurrentChanged(Int_t x,Int_t y)
{
// Emit signal when current position changed.
long args[2];
args[0] = x;
args[1] = y;
Emit("CurrentChanged(Int_t,Int_t)",args);
}
//______________________________________________________________________________
void TGContainer::CurrentChanged(TGFrame* f)
{
// Emit signal when current selected frame changed.
Emit("CurrentChanged(TGFrame*)",(long)f);
}
//______________________________________________________________________________
void TGContainer::ReturnPressed(TGFrame* f)
{
// Signal emitted when Return/Enter key pressed
//
// It's equivalent to "double click" of mouse button
Emit("ReturnPressed(TGFrame*)",(long)f);
}
//______________________________________________________________________________
void TGContainer::SpacePressed(TGFrame* f)
{
// Signal emitted when space key pressed.
//
// Pressing space key inverts selection.
Emit("SpacePressed(TGFrame*)",(long)f);
}
//______________________________________________________________________________
void TGContainer::OnMouseOver(TGFrame* f)
{
// Signal emitted when pointer is over entry.
//
if (!fOnMouseOver) Emit("OnMouseOver(TGFrame*)",(long)f);
fOnMouseOver = kTRUE;
}
//______________________________________________________________________________
void TGContainer::Clicked(TGFrame *entry, Int_t btn)
{
// Emit Clicked() signal.
Long_t args[2];
args[0] = (Long_t)entry;
args[1] = btn;
Emit("Clicked(TGFrame*,Int_t)", args);
}
//______________________________________________________________________________
void TGContainer::Clicked(TGFrame *entry, Int_t btn, Int_t x, Int_t y)
{
// Emit Clicked() signal.
Long_t args[4];
args[0] = (Long_t)entry;
args[1] = btn;
args[2] = x;
args[3] = y;
Emit("Clicked(TGFrame*,Int_t,Int_t,Int_t)", args);
}
//______________________________________________________________________________
void TGContainer::DoubleClicked(TGFrame *entry, Int_t btn)
{
// Emit DoubleClicked() signal.
Long_t args[2];
args[0] = (Long_t)entry;
args[1] = btn;
Emit("DoubleClicked(TGFrame*,Int_t)", args);
}
//______________________________________________________________________________
void TGContainer::DoubleClicked(TGFrame *entry, Int_t btn, Int_t x, Int_t y)
{
// Emit DoubleClicked() signal.
Long_t args[4];
args[0] = (Long_t)entry;
args[1] = btn;
args[2] = x;
args[3] = y;
Emit("DoubleClicked(TGFrame*,Int_t,Int_t,Int_t)", args);
}
//______________________________________________________________________________
void TGContainer::SelectAll()
{
// Select all items in the container.
// SelectAll signal emitted
TIter next(fList);
TGFrameElement* el;
while ((el = (TGFrameElement *) next())) {
el->fFrame->Activate(kTRUE);
}
fSelected = fTotal;
SendMessage(fMsgWindow, MK_MSG(kC_CONTAINER, kCT_SELCHANGED),
fTotal, fSelected);
Emit("SelectAll()");
}
//______________________________________________________________________________
void TGContainer::UnSelectAll()
{
// Unselect all items in the container.
TIter next(fList);
TGFrameElement* el;
while ((el = (TGFrameElement *) next())) {
el->fFrame->Activate(kFALSE);
}
fLastActiveEl = 0;
fSelected = 0;
SendMessage(fMsgWindow, MK_MSG(kC_CONTAINER, kCT_SELCHANGED),
fTotal, fSelected);
Emit("UnSelectAll()");
}
//______________________________________________________________________________
void TGContainer::InvertSelection()
{
// Invert the selection, all selected items become unselected and
// vice versa.
int selected = 0;
TIter next(fList);
TGFrameElement* el;
while ((el = (TGFrameElement *) next())) {
if (!el->fFrame->IsActive()) {
el->fFrame->Activate(kTRUE);
++selected;
} else {
el->fFrame->Activate(kFALSE);
}
fSelected = selected;
}
SendMessage(fMsgWindow, MK_MSG(kC_CONTAINER, kCT_SELCHANGED),
fTotal, fSelected);
Emit("InvertSelection()");
}
//______________________________________________________________________________
void TGContainer::RemoveAll()
{
// Remove all items from the container.
TGFrameElement *el;
TIter next(fList);
while ((el = (TGFrameElement *) next())) {
el->fFrame->DestroyWindow();
delete el->fFrame;
}
fList->Clear();
fLastActiveEl = 0;
fSelected = fTotal = 0;
}
//______________________________________________________________________________
void TGContainer::RemoveItem(TGFrame *item)
{
// Remove item from container.
TGFrameElement *el;
TIter next(fList);
while ((el = (TGFrameElement *) next())) {
if (item == el->fFrame) {
if (fLastActiveEl && item == fLastActiveEl->fFrame) fLastActiveEl = 0;
item->DestroyWindow();
delete item;
fList->Remove(el);
delete el;
break;
}
}
}
//______________________________________________________________________________
const TGFrame *TGContainer::GetNextSelected(void **current)
{
// Return next selected item.
TGFrame *f;
TObjLink *lnk = (TObjLink *) *current;
lnk = (lnk == 0) ? fList->FirstLink() : lnk->Next();
while (lnk) {
f = (TGFrame *) ((TGFrameElement *) lnk->GetObject())->fFrame;
if (f->IsActive()) {
*current = (void *) lnk;
return f;
}
lnk = lnk->Next();
}
return 0;
}
//______________________________________________________________________________
void TGContainer::ActivateItem(TGFrameElement* el)
{
// Activate item.
fLastActiveEl = el;
el->fFrame->Activate(kTRUE);
if (fLastActiveEl!=el) {
CurrentChanged(fLastActiveEl->fFrame->GetX(),fLastActiveEl->fFrame->GetY());
CurrentChanged(fLastActiveEl->fFrame);
fSelected++;
}
SendMessage(fMsgWindow, MK_MSG(kC_CONTAINER, kCT_ITEMCLICK),fTotal, fSelected);
}
//______________________________________________________________________________
TGPosition TGContainer::GetPagePosition() const
{
// Returns page position.
TGPosition ret;
ret.fX = -fViewPort->GetHPos();
ret.fY = -fViewPort->GetVPos();
return ret;
}
//______________________________________________________________________________
TGDimension TGContainer::GetPageDimension() const
{
// Returns page dimension.
TGDimension ret;
ret.fWidth = fViewPort->GetWidth();
ret.fHeight = fViewPort->GetHeight();
return ret;
}
//______________________________________________________________________________
void TGContainer::SetPagePosition(const TGPosition& pos)
{
// Set page position.
fViewPort->SetPos(pos.fX,pos.fY);
}
//______________________________________________________________________________
void TGContainer::SetPagePosition(Int_t x, Int_t y)
{
// Set page position.
fViewPort->SetPos(x,y);
}
//______________________________________________________________________________
void TGContainer::SetPageDimension(const TGDimension& dim)
{
// Set page dimension.
fViewPort->Resize(dim);
}
//______________________________________________________________________________
void TGContainer::SetPageDimension(UInt_t w, UInt_t h)
{
// Set page dimension.
fViewPort->Resize(w,h);
}
//______________________________________________________________________________
void TGContainer::MapSubwindows()
{
// Map subwindows.
if (!fMapSubwindows) return;
else TGCompositeFrame::MapSubwindows();
}
//______________________________________________________________________________
void TGContainer::DoRedraw()
{
// Redraw content of container in the viewport region.
DrawRegion(0,0,fViewPort->GetWidth(),fViewPort->GetHeight());
}
//______________________________________________________________________________
void TGContainer::DrawRegion(Int_t x, Int_t y, UInt_t w, UInt_t h)
{
// Draw a region of container in viewport.
TGFrameElement *el;
Handle_t id = fId;
TGPosition pos = GetPagePosition();
Int_t xx = pos.fX + x; // translate coordinates to current page position
Int_t yy = pos.fY + y;
TIter next(fList);
while ((el = (TGFrameElement *) next())) {
if ( ( Int_t(el->fFrame->GetY())> yy-(Int_t)el->fFrame->GetHeight()) &&
( Int_t(el->fFrame->GetX())> xx-(Int_t)el->fFrame->GetWidth()) &&
( Int_t(el->fFrame->GetY())< yy+Int_t(h+el->fFrame->GetHeight())) &&
( Int_t(el->fFrame->GetX())< xx+Int_t(w+el->fFrame->GetWidth()))) {
// draw either in container window or in double-buffer
if (!fMapSubwindows) el->fFrame->DrawCopy(id,el->fFrame->GetX()-pos.fX,el->fFrame->GetY()-pos.fY);
else fClient->NeedRedraw(el->fFrame);
}
}
}
//______________________________________________________________________________
void TGContainer::ClearViewPort()
{
// Clear view port.
gVirtualX->ClearArea(fId,0,0,fViewPort->GetWidth(),fViewPort->GetHeight());
}
//______________________________________________________________________________
Bool_t TGContainer::HandleExpose(Event_t *event)
{
// Handle expose events. Do not use double buffer.
if (fMapSubwindows)
return TGCompositeFrame::HandleExpose(event);
TGFrameElement *el;
TGPosition pos = GetPagePosition();
Int_t xx = pos.fX + event->fX; // translate coordinates
Int_t yy = pos.fY + event->fY;
TIter next(fList);
if (event->fWindow == GetId()) {
while ((el = (TGFrameElement *) next())) {
if ( ( Int_t(el->fFrame->GetY())> yy-(Int_t)el->fFrame->GetHeight()) &&
( Int_t(el->fFrame->GetX())> xx-(Int_t)el->fFrame->GetWidth()) &&
( Int_t(el->fFrame->GetY())< yy+Int_t(event->fHeight+el->fFrame->GetHeight())) &&
( Int_t(el->fFrame->GetX())< xx+Int_t(event->fWidth+el->fFrame->GetWidth())) ) {
el->fFrame->DrawCopy(fId,el->fFrame->GetX()-pos.fX,el->fFrame->GetY()-pos.fY); //
}
}
} else
TGCompositeFrame::HandleExpose(event);
return kTRUE;
}
//______________________________________________________________________________
Bool_t TGContainer::HandleButton(Event_t *event)
{
// Handle mouse button event in container.
Int_t total, selected, page = 0;
TGPosition pos = GetPagePosition();
TGDimension dim = GetPageDimension();
if (event->fCode == kButton4 || event->fCode == kButton5) {
page = dim.fHeight;
}
if (event->fCode == kButton4) {
//scroll up
Int_t newpos = pos.fY - page;
if (newpos<0) newpos = 0;
fCanvas->SetVsbPosition(newpos);
return kTRUE;
}
if (event->fCode == kButton5) {
// scroll down
Int_t newpos = fCanvas->GetVsbPosition() + page;
fCanvas->SetVsbPosition(newpos);
return kTRUE;
}
Int_t xx = pos.fX + event->fX; // translate coordinates
Int_t yy = pos.fY + event->fY;
if (event->fType == kButtonPress) {
fXp = pos.fX + event->fX;
fYp = pos.fY + event->fY;
UnSelectAll();
total = selected = 0;
TGFrameElement *el;
TIter next(fList);
Bool_t select_frame = kFALSE;
while ((el = (TGFrameElement *) next())) {
select_frame = kFALSE;
if (!fMapSubwindows) {
if ( ( Int_t(el->fFrame->GetY()) + (Int_t)el->fFrame->GetHeight() > yy ) &&
( Int_t(el->fFrame->GetX()) + (Int_t)el->fFrame->GetWidth() > xx ) &&
( Int_t(el->fFrame->GetY()) < yy ) &&
( Int_t(el->fFrame->GetX()) < xx ) ) {
select_frame = kTRUE;
}
} else {
if (el->fFrame->GetId() == (Window_t)event->fUser[0]) {
select_frame = kTRUE;
}
}
if (select_frame) {
selected++;
ActivateItem(el);
Clicked(el->fFrame, event->fCode);
Clicked(el->fFrame, event->fCode, event->fXRoot, event->fYRoot);
}
total++;
}
if (fTotal != total || fSelected != selected) {
fTotal = total;
fSelected = selected;
SendMessage(fMsgWindow, MK_MSG(kC_CONTAINER, kCT_SELCHANGED),
fTotal, fSelected);
}
if ( selected == 0 ) {
fDragging = kTRUE;
fX0 = fXf = fXp;
fY0 = fYf = fYp;
if (fMapSubwindows) gVirtualX->DrawRectangle(fId, fgLineGC(), fX0, fY0, fXf-fX0, fYf-fY0);
}
}
if (event->fType == kButtonRelease) {
gVirtualX->SetInputFocus(fId);
if (fDragging) {
fDragging = kFALSE;
fScrolling = kFALSE;
if (gSystem) gSystem->RemoveTimer(fScrollTimer);
if (fMapSubwindows) gVirtualX->DrawRectangle(fId, fgLineGC(), fX0, fY0, fXf-fX0, fYf-fY0);
} else {
SendMessage(fMsgWindow, MK_MSG(kC_CONTAINER, kCT_ITEMCLICK),
event->fCode, (event->fYRoot << 16) | event->fXRoot);
}
}
fClient->NeedRedraw(this);
return kTRUE;
}
//______________________________________________________________________________
Bool_t TGContainer::HandleDoubleClick(Event_t *event)
{
// Handle double click mouse event.
TGFrameElement *el;
TIter next(fList);
TGPosition pos = GetPagePosition();
Int_t xx = pos.fX + event->fX; // translate coordinates
Int_t yy = pos.fY + event->fY;
Bool_t select_frame = kFALSE;
while ((el = (TGFrameElement *) next())) {
select_frame = kFALSE;
if (!fMapSubwindows) {
if ( ( Int_t(el->fFrame->GetY()) + (Int_t)el->fFrame->GetHeight() > yy ) &&
( Int_t(el->fFrame->GetX()) + (Int_t)el->fFrame->GetWidth() > xx ) &&
( Int_t(el->fFrame->GetY()) < yy ) &&
( Int_t(el->fFrame->GetX()) < xx ) ) {
select_frame = kTRUE;
}
} else {
if (el->fFrame->GetId() == (Window_t)event->fUser[0]) {
select_frame = kTRUE;
}
}
if (select_frame) {
SendMessage(fMsgWindow, MK_MSG(kC_CONTAINER, kCT_ITEMDBLCLICK),
event->fCode, (event->fYRoot << 16) | event->fXRoot);
DoubleClicked(el->fFrame, event->fCode);
DoubleClicked(el->fFrame, event->fCode, event->fXRoot, event->fYRoot);
return kTRUE;
}
}
return kTRUE;
}
//______________________________________________________________________________
Bool_t TGContainer::HandleMotion(Event_t *event)
{
// Handle mouse motion events.
int xf0, yf0, xff, yff, total, selected;
TGPosition pos = GetPagePosition();
TGDimension dim = GetPageDimension();
int x = pos.fX + event->fX;
int y = pos.fY + event->fY;
TGFrameElement* el = 0;
TGFrame* f = 0;
if (fDragging) {
if (fMapSubwindows) gVirtualX->DrawRectangle(fId, fgLineGC(), fX0, fY0, fXf-fX0, fYf-fY0);
fX0 = TMath::Min(fXp,x);
fY0 = TMath::Min(fYp,y);
fXf = TMath::Max(fXp,x);
fYf = TMath::Max(fYp,y);
total = selected = 0;
if (event->fX>Int_t(dim.fWidth)-gAutoScrollFudge) {
fCanvas->SetHsbPosition(x - dim.fWidth);
fScrolling = kTRUE;
} else if (event->fX<gAutoScrollFudge) {
fCanvas->SetHsbPosition(x);
fScrolling = kTRUE;
} else if (event->fY>Int_t(dim.fHeight)-gAutoScrollFudge) {
fCanvas->SetVsbPosition(y - dim.fHeight);
fScrolling = kTRUE;
} else if (event->fY<gAutoScrollFudge) {
fCanvas->SetVsbPosition(y);
fScrolling = kTRUE;
}
TIter next(fList);
while ((el = (TGFrameElement *) next())) {
f = el->fFrame;
++total;
xf0 = f->GetX() + (f->GetWidth() >> 3);
yf0 = f->GetY() + (f->GetHeight() >> 3);
xff = xf0 + f->GetWidth() - (f->GetWidth() >> 2);
yff = yf0 + f->GetHeight() - (f->GetHeight() >> 2);
if (((xf0 > fX0 && xf0 < fXf) ||
(xff > fX0 && xff < fXf)) &&
((yf0 > fY0 && yf0 < fYf) ||
(yff > fY0 && yff < fYf))) {
f->Activate(kTRUE);
#ifndef WIN32
gVirtualX->SetCursor(fId, gVirtualX->CreateCursor(kHand));
#endif
OnMouseOver(f);
++selected;
} else {
f->Activate(kFALSE);
}
}
if (fMapSubwindows) gVirtualX->DrawRectangle(fId, fgLineGC(), fX0, fY0, fXf-fX0, fYf-fY0);
if (fTotal != total || fSelected != selected) {
fTotal = total;
fSelected = selected;
SendMessage(fMsgWindow, MK_MSG(kC_CONTAINER, kCT_SELCHANGED),
fTotal, fSelected);
}
fClient->NeedRedraw(this);
} else {
TIter next(fList);
fOnMouseOver = kFALSE;
while ((el = (TGFrameElement *) next())) {
if ( ( Int_t(el->fFrame->GetY()) + (Int_t)el->fFrame->GetHeight() > y ) &&
( Int_t(el->fFrame->GetX()) + (Int_t)el->fFrame->GetWidth() > x ) &&
( Int_t(el->fFrame->GetY()) < y ) &&
( Int_t(el->fFrame->GetX()) < x ) ) {
#ifndef WIN32
gVirtualX->SetCursor(fId, gVirtualX->CreateCursor(kHand));
#endif
OnMouseOver(f);
}
}
#ifndef WIN32
gVirtualX->SetCursor(fId, gVirtualX->CreateCursor(kPointer));
#endif
}
if (fScrolling) {
if (gSystem) {
fScrollTimer->Reset();
gSystem->AddTimer(fScrollTimer);
}
}
return kTRUE;
}
//______________________________________________________________________________
Bool_t TGContainer::HandleKey(Event_t *event)
{
// The key press event handler converts a key press to some line editor
// action.
char input[10];
Int_t n;
UInt_t keysym;
if (event->fType == kGKeyPress) {
gVirtualX->LookupString(event, input, sizeof(input), keysym);
n = strlen(input);
switch ((EKeySym)keysym) {
case kKey_Enter:
case kKey_Return:
// treat 'Enter' and 'Return' as a double click
SendMessage(GetMessageWindow(), MK_MSG(kC_CONTAINER, kCT_ITEMDBLCLICK),
kButton1, (event->fYRoot << 16) | event->fXRoot);
ReturnPressed(fLastActiveEl->fFrame);
break;
case kKey_Shift:
case kKey_Control:
case kKey_Meta:
case kKey_Alt:
case kKey_CapsLock:
case kKey_NumLock:
case kKey_ScrollLock:
return kTRUE;
case kKey_Space:
fLastActiveEl->fFrame->Activate(!fLastActiveEl->fFrame->IsActive());
SpacePressed(fLastActiveEl->fFrame);
break;
default:
break;
}
if (event->fState & kKeyControlMask) { // Cntrl key modifier pressed
switch((EKeySym)keysym & ~0x20) { // treat upper and lower the same
case kKey_A:
SelectAll();
break;
case kKey_B:
LineLeft();
break;
case kKey_C:
return kTRUE;
case kKey_D:
break;
case kKey_E:
End();
break;
case kKey_F:
Search();
break;
case kKey_G:
RepeatSearch();
break;
case kKey_H:
LineLeft();
break;
case kKey_K:
End();
break;
case kKey_U:
Home();
break;
case kKey_V:
case kKey_Y:
return kTRUE;
case kKey_X:
return kTRUE;
default:
return kTRUE;
}
}
if (n && keysym >= 32 && keysym < 127 && // printable keys
!(event->fState & kKeyControlMask) &&
(EKeySym)keysym != kKey_Delete &&
(EKeySym)keysym != kKey_Backspace) {
if (fKeyTimerActive) {
fKeyInput += input;
} else {
fKeyInput = input;
fKeyTimerActive = kTRUE;
fKeyTimer->Reset();
if (gSystem) gSystem->AddTimer(fKeyTimer);
}
} else {
switch ((EKeySym)keysym) {
case kKey_F3:
RepeatSearch();
break;
case kKey_F5:
Layout();
break;
case kKey_F7:
Search();
break;
case kKey_Left:
LineLeft(event->fState & kKeyShiftMask);
break;
case kKey_Right:
LineRight(event->fState & kKeyShiftMask);
break;
case kKey_Up:
LineUp(event->fState & kKeyShiftMask);
break;
case kKey_Down:
LineDown(event->fState & kKeyShiftMask);
break;
case kKey_PageUp:
PageUp(event->fState & kKeyShiftMask);
break;
case kKey_PageDown:
PageDown(event->fState & kKeyShiftMask);
break;
case kKey_Home:
Home(event->fState & kKeyShiftMask);
break;
case kKey_End:
End(event->fState & kKeyShiftMask);
break;
default:
break;
}
}
}
fClient->NeedRedraw(this);
return kTRUE;
}
//______________________________________________________________________________
void TGContainer::Search()
{
// invokes search dialog. Looks for item with the entered name
Int_t ret = 0;
char msg[256];
TGFrameElement* fe = 0;
fSearch = new TGSearchType;
new TGSearchDialog(fClient->GetRoot(), fCanvas, 400, 150, fSearch, &ret);
if (ret) {
fe = FindFrame(fSearch->fBuffer, fSearch->fDirection,fSearch->fCaseSensitive);
if (!fe) { // find again
if (fLastActiveEl) fLastActiveEl->fFrame->Activate(kFALSE);
fLastActiveEl = 0;
fe = FindFrame(fLastName.Data(),fLastDir,fLastCase);
if (!fe) {
sprintf(msg, "Couldn't find "%s"", fLastName.Data());
gVirtualX->Bell(50);
new TGMsgBox(fClient->GetRoot(), fCanvas, "Container", msg,
kMBIconExclamation, kMBOk, 0);
} else {
if (fLastActiveEl) fLastActiveEl->fFrame->Activate(kFALSE);
ActivateItem(fe);
AdjustPosition();
}
} else {
if (fLastActiveEl) fLastActiveEl->fFrame->Activate(kFALSE);
ActivateItem(fe);
AdjustPosition();
}
}
delete fSearch;
fSearch = 0;
}
//______________________________________________________________________________
void TGContainer::OnAutoScroll()
{
// Autoscroll while close to & beyond The Wall
TGFrameElement* el = 0;
TGFrame* f = 0;
int xf0, yf0, xff, yff, total, selected;
TGDimension dim = GetPageDimension();
TGPosition pos = GetPagePosition();
Window_t dum1, dum2;
Event_t ev;
ev.fType = kButtonPress;
Int_t x,y;
// Autoscroll while close to the wall
Int_t dx = 0;
Int_t dy = 0;
// Where's the cursor?
gVirtualX->QueryPointer(fId,dum1,dum2,ev.fXRoot,ev.fYRoot,x,y,ev.fState);
// Figure scroll amount x
if (x<gAutoScrollFudge) dx = gAutoScrollFudge - x;
else if ((Int_t)dim.fWidth-gAutoScrollFudge<=x) dx = dim.fWidth - gAutoScrollFudge - x;
// Figure scroll amount y
if (y<gAutoScrollFudge) dy = gAutoScrollFudge - y;
else if ((Int_t)dim.fHeight-gAutoScrollFudge<=y) dy = dim.fHeight - gAutoScrollFudge - y;
if (dx || dy) {
Int_t adx = TMath::Abs(dx);
Int_t ady = TMath::Abs(dy);
if (adx>gAutoScrollFudge) adx = gAutoScrollFudge;
if (ady>gAutoScrollFudge) ady = gAutoScrollFudge;
dx *= gAcceleration[adx];
dy *= gAcceleration[ady];
fCanvas->SetHsbPosition(pos.fX-dx);
fCanvas->SetVsbPosition(pos.fY-dy);
// position inside container
x += pos.fX;
y += pos.fY;
fX0 = TMath::Min(fXp,x);
fY0 = TMath::Min(fYp,y);
fXf = TMath::Max(fXp,x);
fYf = TMath::Max(fYp,y);
total = selected = 0;
TIter next(fList);
while ((el = (TGFrameElement *) next())) {
f = el->fFrame;
++total;
xf0 = f->GetX() + (f->GetWidth() >> 3);
yf0 = f->GetY() + (f->GetHeight() >> 3);
xff = xf0 + f->GetWidth() - (f->GetWidth() >> 2);
yff = yf0 + f->GetHeight() - (f->GetHeight() >> 2);
if (((xf0 > fX0 && xf0 < fXf) ||
(xff > fX0 && xff < fXf)) &&
((yf0 > fY0 && yf0 < fYf) ||
(yff > fY0 && yff < fYf))) {
f->Activate(kTRUE);
++selected;
} else {
f->Activate(kFALSE);
}
}
if (fMapSubwindows) gVirtualX->DrawRectangle(fId, fgLineGC(), fX0, fY0, fXf-fX0, fYf-fY0);
if (fTotal != total || fSelected != selected) {
fTotal = total;
fSelected = selected;
SendMessage(fMsgWindow, MK_MSG(kC_CONTAINER, kCT_SELCHANGED),
fTotal, fSelected);
}
fClient->NeedRedraw(this);
}
}
//______________________________________________________________________________
void TGContainer::SearchPattern()
{
// search for entry which name begins with pattern
TGFrameElement* fe = 0;
TIter next(fList);
TGLVEntry* lv;
TObject* obj;
TString str;
while ((fe=( TGFrameElement*)next())) {
if (!fe->fFrame->InheritsFrom(TGLVEntry::Class())) continue;
lv = (TGLVEntry*)fe->fFrame;
obj = (TObject*)lv->GetUserData();
str = obj->GetName();
if (str.BeginsWith(fKeyInput,TString::kIgnoreCase)) {
if (fLastActiveEl && (fLastActiveEl!=fe) )
fLastActiveEl->fFrame->Activate(kFALSE);
ActivateItem(fe);
AdjustPosition();
break;
}
}
fKeyInput = ""; //clear
fKeyTimerActive = kFALSE;
}
//______________________________________________________________________________
void TGContainer::RepeatSearch()
{
// repeats search
char msg[256];
TGFrameElement* fe = 0;
fe = FindFrame(fLastName.Data(),fLastDir,fLastCase);
if (!fe) {
if (fLastActiveEl) fLastActiveEl->fFrame->Activate(kFALSE);
fLastActiveEl = 0;
fe = FindFrame(fLastName.Data(),fLastDir,fLastCase);
if (!fe) {
sprintf(msg, "Couldn't find "%s"", fLastName.Data());
gVirtualX->Bell(50);
new TGMsgBox(fClient->GetRoot(), fCanvas, "Container", msg,
kMBIconExclamation, kMBOk, 0);
} else {
if (fLastActiveEl) fLastActiveEl->fFrame->Activate(kFALSE);
ActivateItem(fe);
AdjustPosition();
}
} else {
if (fLastActiveEl) fLastActiveEl->fFrame->Activate(kFALSE);
ActivateItem(fe);
AdjustPosition();
}
}
//______________________________________________________________________________
TGFrameElement* TGContainer::FindFrame(Int_t x,Int_t y,Bool_t exclude)
{
// find frame located int container at position x,y
TIter next(fList);
TGFrameElement* el;
TGFrameElement* ret = 0;
Int_t dx = 0;
Int_t dy = 0;
Int_t d = 0;
Int_t dd;
el = (TGFrameElement *) next();
if (!el) return 0;
dx = TMath::Abs(el->fFrame->GetX()-x);
dy = TMath::Abs(el->fFrame->GetY()-y);
d = dx + dy;
while ((el = (TGFrameElement *) next())) {
if (exclude && (el==fLastActiveEl) ) continue;
dx = TMath::Abs(el->fFrame->GetX()-x);
dy = TMath::Abs(el->fFrame->GetY()-y);
dd = dx+dy;
if (dd<d) {
d = dd;
ret = el;
}
}
return ret;
}
//______________________________________________________________________________
TGFrameElement* TGContainer::FindFrame(const TString& name, Bool_t direction,
Bool_t caseSensitive,Bool_t beginWith)
{
// Find a frame which assosiated object has a name containing a "name" string.
if (name.IsNull()) return 0;
int idx = kNPOS;
TGFrameElement* el = 0;
TString str;
TString::ECaseCompare cmp = caseSensitive ? TString::kExact : TString::kIgnoreCase;
fLastDir = direction;
fLastCase = caseSensitive;
fLastName = name;
if (fLastActiveEl) {
el = fLastActiveEl;
if (direction) {
el = (TGFrameElement *)fList->After(el);
} else {
el = (TGFrameElement *)fList->Before(el);
}
} else {
if (direction) el = (TGFrameElement *)fList->First();
else el = (TGFrameElement *)fList->Last();
}
TGLVEntry* lv = 0;
TObject* obj = 0;
while (el) {
if (!el->fFrame->InheritsFrom(TGLVEntry::Class())) continue;
lv = (TGLVEntry*)el->fFrame;
obj = (TObject*)lv->GetUserData();
str = obj->GetName();
idx = str.Index(name,0,cmp);
if (idx!=kNPOS) {
if (beginWith) {
if (idx==0) return el;
} else {
return el;
}
}
if (direction) {
el = (TGFrameElement *)fList->After(el);
} else {
el = (TGFrameElement *)fList->Before(el);
}
}
return 0;
}
//______________________________________________________________________________
void TGContainer::AdjustPosition()
{
// Move content to position of highlighted/activated frame
if (!fLastActiveEl) return;
TGFrame* f = fLastActiveEl->fFrame;
Int_t vh = 0;
Int_t v = 0;
if (fCanvas->GetVScrollbar()->IsMapped()) {
vh = fCanvas->GetVScrollbar()->GetPosition()+(Int_t)fViewPort->GetHeight();
if (f->GetY()<fCanvas->GetVScrollbar()->GetPosition()) {
v = TMath::Max(0,f->GetY()-(Int_t)fViewPort->GetHeight()/2);
fCanvas->SetVsbPosition(v);
} else if (f->GetY()+(Int_t)f->GetHeight()>vh) {
v = TMath::Min((Int_t)GetHeight()-(Int_t)fViewPort->GetHeight(),
f->GetY()+(Int_t)f->GetHeight()-(Int_t)fViewPort->GetHeight()/2);
fCanvas->SetVsbPosition(v);
}
}
Int_t hw = 0;
Int_t h = 0;
if (fCanvas->GetHScrollbar()->IsMapped()) {
hw = fCanvas->GetHScrollbar()->GetPosition()+(Int_t)fViewPort->GetWidth();
if (f->GetX()<fCanvas->GetHScrollbar()->GetPosition()) {
h = TMath::Max(0,f->GetX()-(Int_t)fViewPort->GetWidth()/2);
fCanvas->SetHsbPosition(h);
} else if (f->GetX()+(Int_t)f->GetWidth()>hw) {
h = TMath::Min((Int_t)GetWidth()-(Int_t)fViewPort->GetWidth(),
f->GetX()+(Int_t)f->GetWidth()-(Int_t)fViewPort->GetWidth()/2);
fCanvas->SetHsbPosition(h);
}
}
}
//______________________________________________________________________________
void TGContainer::LineLeft(Bool_t select)
{
// Move current position one column left.
TGPosition pos = GetPagePosition();
TGDimension dim = GetPageDimension();
TGFrameElement* fe = (TGFrameElement*)fList->First();
if (!fe) return; // empty list
TGFrameElement* old = fLastActiveEl;
if (old) old->fFrame->Activate(kFALSE); //
else fLastActiveEl = fe;
TGFrameElement* la = fLastActiveEl;
Int_t y = la->fFrame->GetY();
Int_t x = la->fFrame->GetX() - la->fFrame->GetWidth() - la->fLayout->GetPadLeft();
Int_t hw = pos.fX + dim.fWidth;
if (x<=0 && !fCanvas->GetHScrollbar()->IsMapped()) { // move to previous line
x = hw;
y = y - la->fFrame->GetHeight() - la->fLayout->GetPadTop();
}
fe = FindFrame(x,y);
if (!fe) fe = (TGFrameElement*)fList->First();
if (!select) fSelected=1;
ActivateItem(fe);
AdjustPosition();
}
//______________________________________________________________________________
void TGContainer::LineRight(Bool_t select)
{
// Move current position one column right.
TGPosition pos = GetPagePosition();
TGDimension dim = GetPageDimension();
TGFrameElement* fe = (TGFrameElement*)fList->Last();
if (!fe) return;
TGFrameElement* old = fLastActiveEl;
if (old) old->fFrame->Activate(kFALSE);
else fLastActiveEl = (TGFrameElement*)fList->First();
Int_t y = fLastActiveEl->fFrame->GetY();
Int_t x = fLastActiveEl->fFrame->GetX()+
fLastActiveEl->fFrame->GetWidth()+
fLastActiveEl->fLayout->GetPadRight();
Int_t hw = pos.fX + dim.fWidth -
fLastActiveEl->fFrame->GetWidth()-
fLastActiveEl->fLayout->GetPadRight();
if (x>=hw && !fCanvas->GetHScrollbar()->IsMapped()) { // move one line down
x = 0;
y = y + fLastActiveEl->fFrame->GetHeight() + fLastActiveEl->fLayout->GetPadBottom();
}
fe = FindFrame(x,y);
if (!fe) fe = (TGFrameElement*)fList->Last();
if (!select) fSelected=1;
ActivateItem(fe);
AdjustPosition();
}
//______________________________________________________________________________
void TGContainer::LineUp(Bool_t select)
{
// Make current position first line in window by scrolling up.
TGFrameElement* fe = (TGFrameElement*)fList->First();
if (!fe) return;
TGFrameElement* old = fLastActiveEl;
if (old) old->fFrame->Activate(kFALSE);
else fLastActiveEl = (TGFrameElement*)fList->First();
Int_t y = fLastActiveEl->fFrame->GetY()-
fLastActiveEl->fFrame->GetHeight()-
fLastActiveEl->fLayout->GetPadTop();
Int_t x = fLastActiveEl->fFrame->GetX();
fe = FindFrame(x,y);
if (!fe) fe = (TGFrameElement*)fList->First();
if (fe->fFrame->GetY()>fLastActiveEl->fFrame->GetY()) fe = fLastActiveEl;
if (!select) fSelected=1;
ActivateItem(fe);
AdjustPosition();
}
//______________________________________________________________________________
void TGContainer::LineDown(Bool_t select)
{
// Move one line down.
TGFrameElement* fe = (TGFrameElement*)fList->Last();
if (!fe) return;
TGFrameElement* old = fLastActiveEl;
if (old) old->fFrame->Activate(kFALSE);
else fLastActiveEl = (TGFrameElement*)fList->First();
Int_t y = fLastActiveEl->fFrame->GetY()+
fLastActiveEl->fFrame->GetHeight()+
fLastActiveEl->fLayout->GetPadBottom();
Int_t x = fLastActiveEl->fFrame->GetX();
fe = FindFrame(x,y);
if (!fe) fe = (TGFrameElement*)fList->Last();
if (fe->fFrame->GetY()<fLastActiveEl->fFrame->GetY()) fe = fLastActiveEl;
if (!select) fSelected=1;
ActivateItem(fe);
AdjustPosition();
}
//______________________________________________________________________________
void TGContainer::PageUp(Bool_t select)
{
// Move position one page up.
TGDimension dim = GetPageDimension();
TGFrameElement* fe = (TGFrameElement*)fList->First();
if (!fe) return;
TGFrameElement* old = fLastActiveEl;
if (old) old->fFrame->Activate(kFALSE);
else fLastActiveEl = (TGFrameElement*)fList->First();
Int_t y = fLastActiveEl->fFrame->GetY();
Int_t x = fLastActiveEl->fFrame->GetX();
if (fCanvas->GetVScrollbar()->IsMapped()) {
y -= dim.fHeight;
} else {
if (fCanvas->GetHScrollbar()->IsMapped()) x -= dim.fWidth;
else {
Home();
return;
}
}
fe = FindFrame(x,y);
if (!fe || fe->fFrame->GetY()>fLastActiveEl->fFrame->GetY())
fe = (TGFrameElement*)fList->First();
if (!select) fSelected = 1;
ActivateItem(fe);
AdjustPosition();
}
//______________________________________________________________________________
void TGContainer::PageDown(Bool_t select)
{
// Move position one page down.
TGDimension dim = GetPageDimension();
TList* li = GetList();
TGFrameElement* fe = (TGFrameElement*)fList->Last();
if (!fe) return;
TGFrameElement* old = fLastActiveEl;
if (old) old->fFrame->Activate(kFALSE);
else fLastActiveEl = (TGFrameElement*)fList->First();
Int_t y = fLastActiveEl->fFrame->GetY();
Int_t x = fLastActiveEl->fFrame->GetX();
if (fCanvas->GetVScrollbar()->IsMapped()) {
y += dim.fHeight;
} else {
if (fCanvas->GetHScrollbar()->IsMapped()) x += dim.fWidth;
else {
End();
return;
}
}
fe = FindFrame(x,y);
if (!fe || fe->fFrame->GetY()<fLastActiveEl->fFrame->GetY() )
fe = (TGFrameElement*)li->Last();
if (!select) fSelected = 1;
ActivateItem(fe);
AdjustPosition();
}
//______________________________________________________________________________
void TGContainer::Home(Bool_t select)
{
// Move to upper-left corner of container.
TGFrameElement* fe = (TGFrameElement*)fList->First();
if (!fe) return;
TGFrameElement* old = fLastActiveEl;
if (old) old->fFrame->Activate(kFALSE);
if (!select) fSelected = 1;
ActivateItem(fe);
AdjustPosition();
}
//______________________________________________________________________________
void TGContainer::End(Bool_t select)
{
// Move to the bottom-right corner of container.
TGFrameElement* fe = (TGFrameElement*)fList->Last();
if (!fe) return;
TGFrameElement* old = fLastActiveEl;
if (old) old->fFrame->Activate(kFALSE);
if (!select) fSelected = 1;
ActivateItem(fe);
AdjustPosition();
}
//______________________________________________________________________________
TGCanvas::TGCanvas(const TGWindow *p, UInt_t w, UInt_t h,
UInt_t options, ULong_t back) :
TGFrame(p, w, h, options, back)
{
// Create a canvas object.
fVport = new TGViewPort(this, w-4, h-4, kChildFrame | kOwnBackground,
fgWhitePixel);
fHScrollbar = new TGHScrollBar(this, w-4, kDefaultScrollBarWidth);
fVScrollbar = new TGVScrollBar(this, kDefaultScrollBarWidth, h-4);
fScrolling = kCanvasScrollBoth;
fHScrollbar->Associate(this);
fVScrollbar->Associate(this);
}
//______________________________________________________________________________
TGCanvas::~TGCanvas()
{
// Delete canvas.
delete fHScrollbar;
delete fVScrollbar;
delete fVport;
}
//______________________________________________________________________________
void TGCanvas::MapSubwindows()
{
// Map all canvas sub windows.
TGWindow::MapSubwindows();
fHScrollbar->MapSubwindows();
fVScrollbar->MapSubwindows();
fVport->MapSubwindows();
}
//______________________________________________________________________________
void TGCanvas::AddFrame(TGFrame *f, TGLayoutHints *l)
{
// Adding a frame to a canvas is actually adding the frame to the
// viewport container. The viewport container must be at least a
// TGCompositeFrame for this method to succeed.
TGFrame *container = fVport->GetContainer();
if (!container) {
Error("AddFrame", "no canvas container set yet");
return;
}
if (container->InheritsFrom(TGCompositeFrame::Class()))
((TGCompositeFrame*)container)->AddFrame(f, l);
else
Error("AddFrame", "canvas container must inherit from TGCompositeFrame");
}
//______________________________________________________________________________
void TGCanvas::DrawBorder()
{
// Draw canvas border.
switch (fOptions & (kSunkenFrame | kRaisedFrame | kDoubleBorder)) {
case kSunkenFrame | kDoubleBorder:
gVirtualX->DrawLine(fId, fgShadowGC(), 0, 0, fWidth-2, 0);
gVirtualX->DrawLine(fId, fgShadowGC(), 0, 0, 0, fHeight-2);
gVirtualX->DrawLine(fId, fgBlackGC(), 1, 1, fWidth-3, 1);
gVirtualX->DrawLine(fId, fgBlackGC(), 1, 1, 1, fHeight-3);
gVirtualX->DrawLine(fId, fgHilightGC(), 0, fHeight-1, fWidth-1, fHeight-1);
gVirtualX->DrawLine(fId, fgHilightGC(), fWidth-1, fHeight-1, fWidth-1, 0);
gVirtualX->DrawLine(fId, fgBckgndGC(), 1, fHeight-2, fWidth-2, fHeight-2);
gVirtualX->DrawLine(fId, fgBckgndGC(), fWidth-2, 1, fWidth-2, fHeight-2);
break;
default:
TGFrame::DrawBorder();
break;
}
}
//______________________________________________________________________________
void TGCanvas::Layout()
{
// Create layout for canvas. Depending on the size of the container
// we need to add the scrollbars.
Bool_t need_vsb, need_hsb;
UInt_t cw, ch, tcw, tch;
need_vsb = need_hsb = kFALSE;
TGFrame *container = fVport->GetContainer();
if (!container) {
Error("Layout", "no canvas container set yet");
return;
}
Bool_t fixedw = (container->GetOptions() & kFixedWidth) ? kTRUE : kFALSE;
Bool_t fixedh = (container->GetOptions() & kFixedHeight) ? kTRUE : kFALSE;
// test whether we need scrollbars
cw = fWidth - (fBorderWidth << 1);
ch = fHeight - (fBorderWidth << 1);
if (!fixedw) container->SetWidth(cw);
if (!fixedh) container->SetHeight(ch);
if (container->GetDefaultWidth() > cw) {
if (fScrolling & kCanvasScrollHorizontal) {
need_hsb = kTRUE;
ch -= fHScrollbar->GetDefaultHeight();
if ((Int_t) ch < 0) {
//Warning("Layout", "height would become too small, setting to 10");
ch = 10;
}
if (!fixedh) container->SetHeight(ch);
}
}
if (container->GetDefaultHeight() > ch) {
if (fScrolling & kCanvasScrollVertical) {
need_vsb = kTRUE;
cw -= fVScrollbar->GetDefaultWidth();
if ((Int_t) cw < 0) {
//Warning("Layout", "width would become too small, setting to 10");
cw = 10;
}
if (!fixedw) container->SetWidth(cw);
}
}
// re-check again (putting the vertical scrollbar could have changed things)
if (container->GetDefaultWidth() > cw) {
if (!need_hsb) {
if (fScrolling & kCanvasScrollHorizontal) {
need_hsb = kTRUE;
ch -= fHScrollbar->GetDefaultHeight();
if ((Int_t) ch < 0) {
//Warning("Layout", "height would become too small, setting to 10");
ch = 10;
}
if (!fixedh) container->SetHeight(ch);
}
}
}
fVport->MoveResize(fBorderWidth, fBorderWidth, cw, ch);
tcw = TMath::Max(container->GetDefaultWidth(), cw);
tch = TMath::Max(container->GetDefaultHeight(), ch);
UInt_t curw = container->GetDefaultWidth();
container->SetWidth(0); // force a resize in TGFrame::Resize
if (fixedw && fixedh)
container->Resize(curw, container->GetDefaultHeight());
else if (fixedw)
container->Resize(curw, tch);
else if (fixedh)
container->Resize(tcw, container->GetDefaultHeight());
else
container->Resize(tcw, tch);
if (need_hsb) {
fHScrollbar->MoveResize(fBorderWidth, ch+fBorderWidth, cw, fHScrollbar->GetDefaultHeight());
fHScrollbar->SetRange(container->GetWidth(), fVport->GetWidth());
fHScrollbar->MapWindow();
} else {
fHScrollbar->UnmapWindow();
fHScrollbar->SetPosition(0);
}
if (need_vsb) {
fVScrollbar->MoveResize(cw+fBorderWidth, fBorderWidth, fVScrollbar->GetDefaultWidth(), ch);
fVScrollbar->SetRange(container->GetHeight(), fVport->GetHeight());
fVScrollbar->MapWindow();
} else {
fVScrollbar->UnmapWindow();
fVScrollbar->SetPosition(0);
}
}
//______________________________________________________________________________
Bool_t TGCanvas::ProcessMessage(Long_t msg, Long_t parm1, Long_t)
{
// Handle message generated by the canvas scrollbars.
switch (GET_MSG(msg)) {
case kC_HSCROLL:
switch (GET_SUBMSG(msg)) {
case kSB_SLIDERTRACK:
case kSB_SLIDERPOS:
fVport->SetHPos((Int_t)-parm1);
break;
}
break;
case kC_VSCROLL:
switch (GET_SUBMSG(msg)) {
case kSB_SLIDERTRACK:
case kSB_SLIDERPOS:
fVport->SetVPos((Int_t)-parm1);
break;
}
break;
default:
break;
}
return kTRUE;
}
//______________________________________________________________________________
Int_t TGCanvas::GetHsbPosition() const
{
// Get position of horizontal scrollbar.
if (fHScrollbar && fHScrollbar->IsMapped())
return fHScrollbar->GetPosition();
return 0;
}
//______________________________________________________________________________
Int_t TGCanvas::GetVsbPosition() const
{
// Get position of vertical scrollbar.
if (fVScrollbar && fVScrollbar->IsMapped())
return fVScrollbar->GetPosition();
return 0;
}
//______________________________________________________________________________
void TGCanvas::SetHsbPosition(Int_t newPos)
{
// Set position of horizontal scrollbar.
if (fHScrollbar && fHScrollbar->IsMapped())
fHScrollbar->SetPosition(newPos);
else
fVport->SetHPos(0);
}
//______________________________________________________________________________
void TGCanvas::SetVsbPosition(Int_t newPos)
{
// Set position of vertical scrollbar.
if (fVScrollbar && fVScrollbar->IsMapped())
fVScrollbar->SetPosition(newPos);
else
fVport->SetVPos(0);
}
//______________________________________________________________________________
void TGCanvas::SetScrolling(Int_t scrolling)
{
// Set scrolling policy. Use values defined by the enum: kCanvasNoScroll,
// kCanvasScrollHorizontal, kCanvasScrollVertical, kCanvasScrollBoth.
if (scrolling != fScrolling) {
fScrolling = scrolling;
Layout();
}
}
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