i_layout.h

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#pragma once
 
/*+
________________________________________________________________________
 
 (C) dGB Beheer B.V.; (LICENSE) http://opendtect.org/OpendTect_license.txt
 Author:        A.H. Lammertink
 Date:          18/08/1999
________________________________________________________________________
 
-*/
 
#include "uilayout.h"
#include "uigeom.h"
#include "uiobj.h"
#include "sets.h"
 
#include <QLayout>
#include <QRect>
 
 
class resizeItem;
class Timer;
 
 
enum stretchLimitTp { left=1, right=2, above=4, below=8,
                      rightLimit=16, bottomLimit=32 };
 
 
class i_LayoutItem;
 
// all is used for setting cached positions dirty
enum LayoutMode { minimum=0, preferred=1, setGeom=2, all=3 };
const int nLayoutMode = 3;
 
 
class i_LayoutMngr : public mQtclass(QLayout), public NamedCallBacker
{
    friend class        i_LayoutItem;
    friend class        uiGroupParentBody;
 
public:
                        i_LayoutMngr(mQtclass(QWidget*) prnt,
                                     const char* name,uiObjectBody& mngbdy);
 
    virtual             ~i_LayoutMngr();
 
    virtual void        addItem(mQtclass(QLayoutItem*));
    void                addItem(i_LayoutItem*);
 
    virtual mQtclass(QSize)     sizeHint() const;
    virtual mQtclass(QSize)     minimumSize() const;
 
    virtual mQtclass(QLayoutItem*) itemAt(int idx) const;
    virtual mQtclass(QLayoutItem*) takeAt(int idx);
    virtual int          count() const;
 
    virtual void        invalidate();
    virtual void        updatedAlignment(LayoutMode);
    virtual void        initChildLayout(LayoutMode);
 
    bool                attach(constraintType,mQtclass(QWidget&),
                               mQtclass(QWidget*),int,
                               bool reciprocal=true);
 
    const uiRect&       curpos(LayoutMode) const;
    uiRect&             curpos(LayoutMode);
    uiRect              winpos(LayoutMode) const;
 
    void                forceChildrenRedraw(uiObjectBody*,bool deep);
    void                childrenClear(uiObject*);
    bool                isChild(uiObject*);
 
    int                 childStretch(bool hor) const;
 
    int                 borderSpace() const     { return borderspc_; }
    int                 horSpacing() const;
    int                 verSpacing() const      { return vspacing_; }
 
    void                setHSpacing( int s )    { hspacing_ = s; }
    void                setVSpacing( int s )    { vspacing_ = s; }
    void                setBorderSpace( int s ) { borderspc_ = s; }
 
    void                setIsMain( bool yn )    { ismain_ = yn; }
    void                layoutChildren(LayoutMode,bool finalLoop=false);
 
private:
 
    void                setGeometry( const mQtclass(QRect&) );
 
    inline void         doLayout( LayoutMode m, const mQtclass(QRect&) r ) const
                        { const_cast<i_LayoutMngr*>(this)->doLayout(m,r); }
    void                doLayout(LayoutMode,const mQtclass(QRect&));
 
    void                itemDel( CallBacker* );
 
    void                moveChildrenTo( int , int, LayoutMode );
    void                fillResizeList( ObjectSet<resizeItem>&, bool );
    bool                tryToGrowItem( resizeItem&, const int, const int,
                                       int, int, const mQtclass(QRect&), int);
    void                resizeTo( const mQtclass(QRect&) );
    void                childrenCommitGeometrySet(bool);
 
    uiRect              childrenRect(LayoutMode);
 
    ObjectSet<i_LayoutItem> childrenlist_;
 
    uiRect              layoutpos_[nLayoutMode];
    mQtclass(QRect)     prefgeometry_;
 
    bool                minimumdone_;
    bool                preferreddone_;
    bool                prefposstored_;
    bool                ismain_;
 
    int                 hspacing_;
    int                 vspacing_;
    int                 borderspc_;
 
    uiObjectBody&       managedbody_;
 
    void                startPoptimer();
    void                popTimTick(CallBacker*);
    Timer&              poptimer_;
    bool                poppedup_;
    bool                timerrunning_;
 
    friend class i_LayoutItem;
 
};