// @(#)root/gui:$Id: TGLayout.h 23115 2008-04-10 13:35:37Z rdm $ // Author: Fons Rademakers 02/01/98 /************************************************************************* * 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. * *************************************************************************/ #ifndef ROOT_TGLayout #define ROOT_TGLayout ////////////////////////////////////////////////////////////////////////// // // // A number of different layout classes (TGLayoutManager, // // TGVerticalLayout, TGHorizontalLayout, TGLayoutHints, etc.). // // // ////////////////////////////////////////////////////////////////////////// #ifndef ROOT_TObject #include "TObject.h" #endif #ifndef ROOT_TGDimension #include "TGDimension.h" #endif #ifndef ROOT_TRefCnt #include "TRefCnt.h" #endif //---- layout hints enum ELayoutHints { kLHintsNoHints = 0, kLHintsLeft = BIT(0), kLHintsCenterX = BIT(1), kLHintsRight = BIT(2), kLHintsTop = BIT(3), kLHintsCenterY = BIT(4), kLHintsBottom = BIT(5), kLHintsExpandX = BIT(6), kLHintsExpandY = BIT(7), kLHintsNormal = (kLHintsLeft | kLHintsTop) // bits 8-11 used by ETableLayoutHints }; class TGFrame; class TGCompositeFrame; class TGLayoutHints; class TList; class TGFrameElement; ////////////////////////////////////////////////////////////////////////// // // // TGLayoutHints // // // // This class describes layout hints used by the layout classes. // // // ////////////////////////////////////////////////////////////////////////// class TGLayoutHints : public TObject, public TRefCnt { friend class TGFrameElement; friend class TGCompositeFrame; private: TGFrameElement *fFE; // back pointer to the last frame element TGFrameElement *fPrev; // previous element sharing this layout_hints TGLayoutHints& operator=(const TGLayoutHints&); protected: ULong_t fLayoutHints; // layout hints (combination of ELayoutHints) Int_t fPadtop; // amount of top padding Int_t fPadbottom; // amount of bottom padding Int_t fPadleft; // amount of left padding Int_t fPadright; // amount of right padding void UpdateFrameElements(TGLayoutHints *l); public: TGLayoutHints(ULong_t hints = kLHintsNormal, Int_t padleft = 0, Int_t padright = 0, Int_t padtop = 0, Int_t padbottom = 0): fFE(0), fPrev(0), fLayoutHints(hints), fPadtop(padtop), fPadbottom(padbottom), fPadleft(padleft), fPadright(padright) { SetRefCount(0); } TGLayoutHints(const TGLayoutHints &lh); virtual ~TGLayoutHints(); ULong_t GetLayoutHints() const { return fLayoutHints; } Int_t GetPadTop() const { return fPadtop; } Int_t GetPadBottom() const { return fPadbottom; } Int_t GetPadLeft() const { return fPadleft; } Int_t GetPadRight() const { return fPadright; } virtual void SetLayoutHints(ULong_t lh) { fLayoutHints = lh; } virtual void SetPadTop(Int_t v) { fPadtop = v; } virtual void SetPadBottom(Int_t v) { fPadbottom = v; } virtual void SetPadLeft(Int_t v) { fPadleft = v; } virtual void SetPadRight(Int_t v) { fPadright = v; } void Print(Option_t* option = "") const; void ls(Option_t* option = "") const { Print(option); } virtual void SavePrimitive(ostream &out, Option_t *option = ""); ClassDef(TGLayoutHints,0) // Class describing GUI layout hints }; // Temporarily public as we need to share this class definition // with the frame manager class class TGFrameElement : public TObject { private: TGFrameElement(const TGFrameElement&); TGFrameElement& operator=(const TGFrameElement&); public: TGFrame *fFrame; // frame used in layout Int_t fState; // EFrameState defined in TGFrame.h TGLayoutHints *fLayout; // layout hints used in layout TGFrameElement() : fFrame(0), fState(0), fLayout(0) { } TGFrameElement(TGFrame *f, TGLayoutHints *l); ~TGFrameElement(); void Print(Option_t* option = "") const; void ls(Option_t* option = "") const { Print(option); } ClassDef(TGFrameElement, 0); // Base class used in GUI containers }; ////////////////////////////////////////////////////////////////////////// // // // TGLayoutManager // // // // Frame layout manager. This is an abstract class. // // // ////////////////////////////////////////////////////////////////////////// class TGLayoutManager : public TObject { protected: Bool_t fModified;// kTRUE if positions of subframes changed after layout public: TGLayoutManager() : fModified(kTRUE) {} virtual void Layout() = 0; virtual TGDimension GetDefaultSize() const = 0; virtual void SetDefaultWidth(UInt_t /* w */) {} virtual void SetDefaultHeight(UInt_t /* h */) {} virtual Bool_t IsModified() const { return fModified; } virtual void SetModified(Bool_t flag = kTRUE) { fModified = flag; } ClassDef(TGLayoutManager,0) // Layout manager abstract base class }; ////////////////////////////////////////////////////////////////////////// // // // TGVerticalLayout and TGHorizontalLayout managers. // // // ////////////////////////////////////////////////////////////////////////// class TGVerticalLayout : public TGLayoutManager { protected: TGCompositeFrame *fMain; // container frame TList *fList; // list of frames to arrange TGVerticalLayout(const TGVerticalLayout& gvl) : TGLayoutManager(gvl), fMain(gvl.fMain), fList(gvl.fList) { } TGVerticalLayout& operator=(const TGVerticalLayout& gvl) {if(this!=&gvl) { TGLayoutManager::operator=(gvl); fMain=gvl.fMain; fList=gvl.fList;} return *this;} public: TGVerticalLayout(TGCompositeFrame *main); virtual void Layout(); virtual TGDimension GetDefaultSize() const; virtual void SavePrimitive(ostream &out, Option_t * = ""); ClassDef(TGVerticalLayout,0) // Vertical layout manager }; class TGHorizontalLayout : public TGVerticalLayout { public: TGHorizontalLayout(TGCompositeFrame *main) : TGVerticalLayout(main) { } virtual void Layout(); virtual TGDimension GetDefaultSize() const; virtual void SavePrimitive(ostream &out, Option_t * = ""); ClassDef(TGHorizontalLayout,0) // Horizontal layout manager }; ////////////////////////////////////////////////////////////////////////// // // // TGRowLayout and TGColumnLayout managers. // // // // The follwing two layout managers do not make use of TGLayoutHints. // // // ////////////////////////////////////////////////////////////////////////// class TGRowLayout : public TGVerticalLayout { public: Int_t fSep; // interval between frames TGRowLayout(TGCompositeFrame *main, Int_t s = 0) : TGVerticalLayout(main), fSep(s) { } virtual void Layout(); virtual TGDimension GetDefaultSize() const; virtual void SavePrimitive(ostream &out, Option_t * = ""); ClassDef(TGRowLayout,0) // Row layout manager }; class TGColumnLayout : public TGRowLayout { public: TGColumnLayout(TGCompositeFrame *main, Int_t s = 0) : TGRowLayout(main, s) { } virtual void Layout(); virtual TGDimension GetDefaultSize() const; virtual void SavePrimitive(ostream &out, Option_t * = ""); ClassDef(TGColumnLayout,0) // Column layout manager }; ////////////////////////////////////////////////////////////////////////// // // // TGMatrixLayout manager. // // // // This layout managers does not make use of TGLayoutHints. // // // ////////////////////////////////////////////////////////////////////////// class TGMatrixLayout : public TGLayoutManager { private: TGMatrixLayout(const TGMatrixLayout&); TGMatrixLayout& operator=(const TGMatrixLayout&); protected: TGCompositeFrame *fMain; // container frame TList *fList; // list of frames to arrange public: Int_t fSep; // interval between frames Int_t fHints; // layout hints (currently not used) UInt_t fRows; // number of rows UInt_t fColumns; // number of columns TGMatrixLayout(TGCompositeFrame *main, UInt_t r, UInt_t c, Int_t s=0, Int_t h=0); virtual void Layout(); virtual TGDimension GetDefaultSize() const; virtual void SavePrimitive(ostream &out, Option_t * = ""); ClassDef(TGMatrixLayout,0) // Matrix layout manager }; ////////////////////////////////////////////////////////////////////////// // // // TGTileLayout, TGListLayout and TGListDetailsLayout managers. // // // // This are layout managers for the TGListView widget. // // // ////////////////////////////////////////////////////////////////////////// class TGTileLayout : public TGLayoutManager { private: TGTileLayout(const TGTileLayout&); TGTileLayout& operator=(const TGTileLayout&); protected: Int_t fSep; // separation between tiles TGCompositeFrame *fMain; // container frame TList *fList; // list of frames to arrange Bool_t fModified;// layout changed public: TGTileLayout(TGCompositeFrame *main, Int_t sep = 0); virtual void Layout(); virtual TGDimension GetDefaultSize() const; virtual Bool_t IsModified() const { return fModified; } virtual void SavePrimitive(ostream &out, Option_t * = ""); ClassDef(TGTileLayout,0) // Tile layout manager }; class TGListLayout : public TGTileLayout { public: TGListLayout(TGCompositeFrame *main, Int_t sep = 0) : TGTileLayout(main, sep) { } virtual void Layout(); virtual TGDimension GetDefaultSize() const; virtual void SavePrimitive(ostream &out, Option_t * = ""); ClassDef(TGListLayout,0) // Layout manager for TGListView widget }; class TGListDetailsLayout : public TGTileLayout { private: UInt_t fWidth; // width of listview container public: TGListDetailsLayout(TGCompositeFrame *main, Int_t sep = 0, UInt_t w = 0) : TGTileLayout(main, sep), fWidth(w) { } virtual void Layout(); virtual TGDimension GetDefaultSize() const; virtual void SetDefaultWidth(UInt_t w) { fWidth = w; } virtual void SavePrimitive(ostream &out, Option_t * = ""); ClassDef(TGListDetailsLayout,0) // Layout manager for TGListView details }; #endif