TGXYLayoutHints
class description - source file - inheritance tree
public:
TGXYLayoutHints TGXYLayoutHints(Double_t x, Double_t y, Double_t w, Double_t h, UInt_t rubberFlag = kLRubberX|kLRubberY)
TGXYLayoutHints TGXYLayoutHints(const TGXYLayoutHints&)
void ~TGXYLayoutHints()
static TClass* Class()
UInt_t GetFlag() const
Double_t GetH() const
Double_t GetW() const
Double_t GetX() const
Double_t GetY() const
virtual TClass* IsA() const
void SetFlag(UInt_t flag)
void SetH(Double_t h)
void SetW(Double_t w)
void SetX(Double_t x)
void SetY(Double_t y)
virtual void ShowMembers(TMemberInspector& insp, char* parent)
virtual void Streamer(TBuffer& b)
void StreamerNVirtual(TBuffer& b)
protected:
Double_t fX x - position of widget
Double_t fY y - position of widget
Double_t fW width of widget
Double_t fH height of widget
UInt_t fFlag rubber flag
public:
static const TGXYLayoutHints::ERubberFlag kLRubberX
static const TGXYLayoutHints::ERubberFlag kLRubberY
static const TGXYLayoutHints::ERubberFlag kLRubberW
static const TGXYLayoutHints::ERubberFlag kLRubberH
TGXYLayout
Is a layout manager where the position and the size of each widget
in the frame are defined by X / Y - coordinates. The coordinates
for each widget are defined by the TGXYLayoutHints. Therefore it
is not possible to share a layout hint for several widgets.
The coordinates (X, Y) and the size (W, H) are defined in units
of the size of a typical character. Also the size of the
TGCompositeFrame for which a TGXYLayout manager is used has to be
defined in its constructor in units of the size of a character!
It is not possible to use any other layout hint than the
TGXYLayoutHints for this layout manager!
The rubberFlag in the constructor of the TGLXYLayoutHins defines
how the position and the size of a widget is recalculated if the
size of the frame is increased:
- kLRubberX: The X - position (left edge) is increased by the same
factor as the width of the frame increases.
- kLRubberY: The Y - position (upper edge) is increased by the same
factor as the height of the frame increases.
- kLRubberW: The width of the widget is increased by the same
factor as the width of the frame increases.
- kLRubberY: The height of the widget is increased by the same
factor as the height of the frame increases.
But the size never becomes smaller than defined by the
TGXYLayoutHints and the X and Y coordinates becomes never smaller
than defined by the layout hints.
TGXYLayoutHints
This layout hint must be used for the TGXYLouyout manager!
Example how to use this layout manager:
TGMyFrame::TGMyFrame()
: TGMainFrame(gClient->GetRoot(), 30, 12)
// frame is 30 character long and 12 character heigh
{
SetLayoutManager(new TGXYLayout(this));
// create a button of size 8 X 1.8 at position 20 / 1
TGTextButton * button;
button = new TGTextButton(this, "&Apply", 1);
AddFrame(button, new TGXYLayoutHints(20, 1, 8, 1.8));
// create a listbox of size 18 X 10 at position 1 / 1.
// The height will increase if the frame height increases
TGListBox * listBox;
listBox = new TGListBox(this, 2);
AddFrame(listBox, new TGXYLayoutHints(1, 1, 18, 10,
TGXYLayoutHints::kLRubberX |
TGXYLayoutHints::kLRubberY |
TGXYLayoutHints::kLRubberH ));
.
.
.
}
Normaly there is one layout hint per widget. Therefore these
can be deleted like in the following example in the desctuctor
of the frame:
TGMyFrame::~TGMyFrame()
{
// Destructor, deletes all frames and their layout hints.
TGFrameElement *ptr;
// delete all frames and layout hints
if (fList) {
TIter next(fList);
while ((ptr = (TGFrameElement *) next())) {
if (ptr->fLayout)
delete ptr->fLayout;
if (ptr->fFrame)
delete ptr->fFrame;
}
}
}
TGXYLayoutHints(Double_t x, Double_t y, Double_t w, Double_t h,
UInt_t rubberFlag)
: TGLayoutHints(kLHintsNormal, 0,0,0,0)
Constructor. The x, y, w and h define the position of the widget in
its frame and the size of the widget. The unit is the size of a
character. The rubberFlag defines how to move and to resize the
widget when the frame is resized. Default is moving the X and Y
position but keep the size of the widget.
Inline Functions
Double_t GetX() const
Double_t GetY() const
Double_t GetW() const
Double_t GetH() const
UInt_t GetFlag() const
void SetX(Double_t x)
void SetY(Double_t y)
void SetW(Double_t w)
void SetH(Double_t h)
void SetFlag(UInt_t flag)
TClass* Class()
TClass* IsA() const
void ShowMembers(TMemberInspector& insp, char* parent)
void Streamer(TBuffer& b)
void StreamerNVirtual(TBuffer& b)
TGXYLayoutHints TGXYLayoutHints(const TGXYLayoutHints&)
void ~TGXYLayoutHints()
Author: Reiner Rohlfs 24/03/2002
Last update: root/gui:$Name: $:$Id: TGXYLayout.cxx,v 1.1 2002/08/08 16:54:11 rdm Exp $
Copyright (C) 1995-2001, Rene Brun, Fons Rademakers and Reiner Rohlfs *
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