// @(#)root/gui:$Name: $:$Id: TGDoubleSlider.h,v 1.4 2001/06/07 11:14:19 rdm Exp $ // Author: Reiner Rohlfs 30/09/98 /************************************************************************* * 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_TGDoubleSlider #define ROOT_TGDoubleSlider ////////////////////////////////////////////////////////////////////////// // // // TGDoubleSlider, TGDoubleVSlider and TGDoubleHSlider // // // // DoubleSlider widgets allow easy selection of a min and a max value // // out of a range. // // DoubleSliders can be either horizontal or vertical oriented and // // there is a choice of three different types of tick marks. // // // // To change the min value press the mouse near to the left / bottom // // edge of the slider. // // To change the max value press the mouse near to the right / top // // edge of the slider. // // To change both values simultaneously press the mouse near to the // // center of the slider. // // // // TGDoubleSlider is an abstract base class. Use the concrete // // TGDoubleVSlider and TGDoubleHSlider. // // // // Dragging the slider will generate the event: // // kC_VSLIDER, kSL_POS, slider id, 0 (for vertical slider) // // kC_HSLIDER, kSL_POS, slider id, 0 (for horizontal slider) // // // // Pressing the mouse will generate the event: // // kC_VSLIDER, kSL_PRESS, slider id, 0 (for vertical slider) // // kC_HSLIDER, kSL_PRESS, slider id, 0 (for horizontal slider) // // // // Releasing the mouse will generate the event: // // kC_VSLIDER, kSL_RELEASE, slider id, 0 (for vertical slider) // // kC_HSLIDER, kSL_RELEASE, slider id, 0 (for horizontal slider) // // // // Use the functions GetMinPosition(), GetMaxPosition() and // // GetPosition() to retrieve the position of the slider. // // // ////////////////////////////////////////////////////////////////////////// #ifndef ROOT_TGFrame #include "TGFrame.h" #endif #ifndef ROOT_TGWidget #include "TGWidget.h" #endif //--- sizes for vert. and horz. sliders enum EDoubleSliderSize { kDoubleSliderWidth = 24, kDoubleSliderHeight = kDoubleSliderWidth }; enum EDoubleSliderScale { //--- scaling of slider kDoubleScaleNo = BIT(0), kDoubleScaleDownRight = BIT(1), kDoubleScaleBoth = BIT(2) }; class TGDoubleSlider : public TGFrame, public TGWidget { protected: Float_t fPos; // logical position between fVmin and fVmax Float_t fSmin; // logical position of min value of Slider Float_t fSmax; // logical position of max value of Slider Int_t fRelPos; // slider position in pixel coordinates Float_t fVmin; // logical lower limit of slider Float_t fVmax; // logical upper limit of slider Int_t fScale; // tick mark scale Int_t fScaleType; // tick mark scale type (no, downright, both) Bool_t fDragging; // true if in dragging mode Int_t fPressPoint; // mouse position at button press event Float_t fPressSmin; // logical min position at button press event Float_t fPressSmax; // logical max position at button press event Int_t fMove; // 1: move min value // 2: move max value // 3: move min and max value // 0: don't move any value Bool_t fReversedScale; // reverse which end is min and max Bool_t fMarkEnds; // lines marking where stretch zones begin public: TGDoubleSlider(const TGWindow *p, UInt_t w, UInt_t h, UInt_t scale, Int_t id = -1, UInt_t options = kChildFrame, ULong_t back = GetDefaultFrameBackground(), Bool_t reversed = kFALSE, Bool_t mark_ends = kFALSE); virtual ~TGDoubleSlider() { } virtual Bool_t HandleButton(Event_t *event) = 0; virtual Bool_t HandleMotion(Event_t *event) = 0; virtual void SetScale(Int_t scale) { fScale = scale; } virtual void SetRange(Float_t min, Float_t max) { fVmin = min; fVmax = max; } virtual void SetPosition(Float_t min, Float_t max) { if (fReversedScale) { fSmin = fVmin+fVmax-max; fSmax = fVmin+fVmax-min; } else { fSmin = min; fSmax = max; } fClient->NeedRedraw(this); } virtual Float_t GetMinPosition() const { if (fReversedScale) return fVmin+fVmax-fSmax; else return fSmin; } virtual Float_t GetMaxPosition() const { if (fReversedScale) return fVmin+fVmax-fSmin; else return fSmax; } virtual void GetPosition(Float_t &min, Float_t &max) const { if (fReversedScale) { min = fVmin+fVmax-fSmax; max = fVmin+fVmax-fSmin; } else { min = fSmin; max = fSmax; } } virtual void GetPosition(Float_t *min, Float_t *max) const { if (fReversedScale) { *min = fVmin+fVmax-fSmax; *max = fVmin+fVmax-fSmin; } else { *min = fSmin; *max = fSmax; } } virtual void MapSubwindows() { TGWindow::MapSubwindows(); } virtual void PositionChanged() { Emit("PositionChanged()"); } //*SIGNAL* virtual void Pressed() { Emit("Pressed()"); } //*SIGNAL* virtual void Released() { Emit("Released()"); } //*SIGNAL* ClassDef(TGDoubleSlider,0) // Double slider widget abstract base class }; class TGDoubleVSlider : public TGDoubleSlider { protected: Int_t fYp; // vertical slider y position in pixel coordinates virtual void DoRedraw(); public: TGDoubleVSlider(const TGWindow *p, UInt_t h, UInt_t scale, Int_t id = -1, UInt_t options = kVerticalFrame, ULong_t back = GetDefaultFrameBackground(), Bool_t reversed = kFALSE, Bool_t mark_ends = kFALSE); virtual ~TGDoubleVSlider(); virtual Bool_t HandleButton(Event_t *event); virtual Bool_t HandleMotion(Event_t *event); virtual TGDimension GetDefaultSize() const { return TGDimension(kDoubleSliderWidth, fHeight); } ClassDef(TGDoubleVSlider,0) // Vertical double slider widget }; class TGDoubleHSlider : public TGDoubleSlider { protected: Int_t fXp; // horizontal slider x position in pixel coordinates virtual void DoRedraw(); public: TGDoubleHSlider(const TGWindow *p, UInt_t w, UInt_t scale, Int_t id = -1, UInt_t options = kHorizontalFrame, ULong_t back = GetDefaultFrameBackground(), Bool_t reversed = kFALSE, Bool_t mark_ends = kFALSE); virtual ~TGDoubleHSlider(); virtual Bool_t HandleButton(Event_t *event); virtual Bool_t HandleMotion(Event_t *event); virtual TGDimension GetDefaultSize() const { return TGDimension(fWidth, kDoubleSliderHeight); } ClassDef(TGDoubleHSlider,0) // Horizontal double slider widget }; #endif