library: libGQt #include "TQtWidget.h" |
TQtWidget
class description - header file - source file - inheritance tree (.pdf)
class TQtWidget : public QWidget
private:
TQtWidget(const TQtWidget&)
void operator=(const TQtWidget&) const
void operator=(const TQtWidget&)
protected:
void AdjustBufferSize()
TCanvas* Canvas()
virtual void customEvent(QCustomEvent*)
virtual void EmitCanvasPainted()
virtual void enterEvent(QEvent*)
virtual void exitSizeEvent()
virtual void focusInEvent(QFocusEvent*)
virtual void focusOutEvent(QFocusEvent*)
QWidget* GetRootID() const
virtual void keyPressEvent(QKeyEvent*)
virtual void keyReleaseEvent(QKeyEvent*)
virtual void leaveEvent(QEvent*)
virtual void mouseDoubleClickEvent(QMouseEvent*)
virtual void mouseMoveEvent(QMouseEvent*)
virtual void mousePressEvent(QMouseEvent*)
virtual void mouseReleaseEvent(QMouseEvent*)
virtual void paintEvent(QPaintEvent*)
bool paintFlag(bool mode = TRUE)
bool paintingActive() const
virtual void resizeEvent(QResizeEvent*)
void SetRootID(QWidget* wrapper)
virtual void SetSizeHint(const QSize& size)
virtual void showEvent(QShowEvent*)
virtual void stretchWidget(QResizeEvent* e)
public:
TQtWidget(QWidget* parent = 0)
virtual ~TQtWidget()
virtual void adjustSize()
virtual void cd()
virtual void cd(int subpadnumber)
static TClass* Class()
void DisableSignalEvents(UInt_t f)
void Disconnect()
void EmitSignal(UInt_t f)
void EmitTestedSignal()
void EnableSignalEvents(UInt_t f)
virtual void erase()
UInt_t GetAllBits() const
QPixmap& GetBuffer()
const QPixmap& GetBuffer() const
TCanvas* GetCanvas() const
Int_t GetEvent() const
Int_t GetEventX() const
Int_t GetEventY() const
TObject* GetSelected() const
TVirtualPad* GetSelectedPad() const
Int_t GetSelectedX() const
Int_t GetSelectedY() const
static TApplication* InitRint(Bool_t prompt = kFALSE, const char* appClassName = "QtRint", int* argc = 0, char** argv = "0", void* options = 0, int numOptions = 0, Bool_t noLogo = kFALSE)
void InvertBit(UInt_t f)
virtual TClass* IsA() const
bool IsDoubleBuffered()
Bool_t IsSignalEventEnabled(UInt_t f) const
virtual QSize minimumSizeHint() const
void Refresh()
void ResetBit(UInt_t f)
virtual void resize(int w, int h)
virtual bool Save(const QString& fileName) const
virtual bool Save(const char* fileName) const
virtual bool Save(const QString& fileName, const char* format, int quality = 60) const
virtual bool Save(const char* fileName, const char* format, int quality = 60) const
void SetAllBits(UInt_t f)
void SetBit(UInt_t f, Bool_t set)
void SetBit(UInt_t f)
void SetCanvas(TCanvas* c)
void SetDoubleBuffer(bool on = TRUE)
virtual void SetSaveFormat(const char* format)
virtual void ShowMembers(TMemberInspector& insp, char* parent)
virtual QSize sizeHint() const
virtual QSizePolicy sizePolicy() const
virtual void Streamer(TBuffer& b)
void StreamerNVirtual(TBuffer& b)
Bool_t TestBit(UInt_t f) const
Int_t TestBits(UInt_t f) const
private:
UInt_t fBits bit field status word
protected:
TCanvas* fCanvas
TQtWidgetBuffer fPixmapID Double buffer of this widget
bool fPaint
bool fSizeChanged
bool fDoubleBufferOn
bool fEmbedded
QSize fSizeHint
QWidget* fWrapper
QString fSaveFormat
public:
static const enum TQtWidget:: kBitMask
static const enum TQtWidget:: kEXITSIZEMOVE
static const enum TQtWidget:: kENTERSIZEMOVE
static const enum TQtWidget:: kFORCESIZE
TQtWidget is a QWidget with the QPixmap double buffer
It is designed to back the ROOT TCanvasImp class interface and it can be used
as a regular Qt Widget to create Qt-based GUI with the embedded TCanvas objects
This widget can be used as a Qt "custom widget"
to build a custom GUI interfaces with Qt Designer
The class emits the Qt signals and has Qt public slots
Public slots: (Qt)
virtual void cd(); // make the associated TCanvas the current one (shortcut to TCanvas::cd())
virtual void cd(int subpadnumber); // as above - shortcut to Canvas::cd(int subpadnumber)
void Disconnect(); // disconnect the QWidget from the ROOT TCanvas (used in the class dtor)
void Refresh(); // force the associated TCanvas::Update to be called
virtual bool Save(const QString &fileName) const; // Save the widget image with some ppixmap file
virtual bool Save(const char *fileName) const;
virtual bool Save(const QString &fileName,const char *format,int quality=60) const;
virtual bool Save(const char *fileName,const char *format,int quality=60) const;
signals (Qt)
CanvasPainted(); // Signal the TCanvas has been painted onto the screen
Saved(bool ok); // Signal the TCanvas has been saved into the file
RootEventProcessed(TObject *selected, unsigned int event, TCanvas *c);
// Signal the Qt mouse/keyboard event has been process by ROOT
// This "signal" is emitted by the enabled mouse events only.
// See: EnableSignalEvents
// --- DisableSignalEvents
public methods:
The methods below define whether the TQtWidget object emits "RootEventProcessed" Qt signals
(By default no RootEventProcessed Qt signal is emitted )
void EnableSignalEvents (UInt_t f)
void DisableSignalEvents(UInt_t f),
where f is a bitwise OR of the mouse event flags:
kMousePressEvent // TCanvas processed QEvent mousePressEvent
kMouseMoveEvent // TCanvas processed QEvent mouseMoveEvent
kMouseReleaseEvent // TCanvas processed QEvent mouseReleaseEvent
kMouseDoubleClickEvent // TCanvas processed QEvent mouseDoubleClickEvent
kKeyPressEvent // TCanvas processed QEvent keyPressEvent
kEnterEvent // TCanvas processed QEvent enterEvent
kLeaveEvent // TCanvas processed QEvent leaveEvent
For example to create the custom responce to the mouse crossing TCanvas
connect the RootEventProsecced signal with your qt slot:
connect(tQtWidget,SIGNAL(RootEventProcessed(TObject *, unsigned int, TCanvas *))
,this,SLOT(CanvasEvent(TObject *, unsigned int, TCanvas *)));
. . .
void qtrootexample1::CanvasEvent(TObject *obj, unsigned int event, TCanvas *)
{
TQtWidget *tipped = (TQtWidget *)sender();
const char *objectInfo =
obj->GetObjectInfo(tipped->GetEventX(),tipped->GetEventY());
QString tipText ="You have ";
if (tipped == tQtWidget1)
tipText +="clicked";
else
tipText +="passed";
tipText += " the object <";
tipText += obj->GetName();
tipText += "> of class ";
tipText += obj->ClassName();
tipText += " : ";
tipText += objectInfo;
QWhatsThis::display(tipText)
}
TQtWidget(QWidget* parent, const char* name, Qt::WFlags f,bool embedded)
void adjustSize()
Adjusts the size of the widget to fit the contents.
Adjust the size of the double buffer to the
current Widget size
void cd()
[slot] to make this embedded canvas the current one
void cd(int subpadnumber)
[slot] to make this embedded canvas / pad the current one
void Disconnect()
[slot] Disconnect the Qt widget from TCanvas object before deleting
to avoid the dead lock
one has to set CanvasID = 0 to disconnect things properly.
void customEvent(QCustomEvent *e)
The custom responce to the special WIN32 events
These events are not present with X11 systems
void mouseReleaseEvent(QMouseEvent * e)
Map the Qt mouse button release event to the ROOT TCanvas events
kButton1Up = 11, kButton2Up = 12, kButton3Up = 13
void enterEvent(QEvent *e)
Map the Qt mouse enters widget event to the ROOT TCanvas events
kMouseEnter = 52
void resizeEvent(QResizeEvent *e)
The widget will be erased and receive a paint event immediately after
processing the resize event.
No drawing need be (or should be) done inside this handler.
void SetSaveFormat(const char *format)
Set the default save format for the widget
bool Save(const char *fileName)
TQtWidget::Save(const QString &fileName) is a public Qt slot.
it saves the double buffer of this object using the default save
format defined the file extension
If the "fileName" has no extension the "default" format is to be used instead
The deafult format is "PNG".
It can be changed with the TQtWidget::SetSaveFormat method
bool Save(const QString &fileName)
TQtWidget::Save(const QString &fileName) is a public Qt slot.
it saves the double buffer of this object using the default save
format defined the file extension
If the "fileName" has no extension the "default" format is to be used instead
The deafult format is "PNG".
It can be changed with the TQtWidget::SetSaveFormat method
bool Save(const char *fileName,const char *format,int quality)
bool Save(const QString &fileName,const char *format,int quality)
TQtWidget::save is a public Qt slot.
it saves the double buffer of this object using QPixmap facility
bool paintFlag(bool mode)
Set new fPaint flag
Returns: the previous version of the flag
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Proxy methods to access the TCanvas selected TObject
and last processed event
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----- bit manipulation
Author: Valeri Fine 23/01/2003
Last update: root/qt:$Name: $:$Id: TQtWidget.cxx,v 1.23 2006/05/08 13:16:56 antcheva Exp $
Copyright (C) 1995-2004, Rene Brun and Fons Rademakers. *
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