lgrTimeBarZoomBox.h

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/******************************************************************************
** Copyright (c) 1992-2015 VT MAK
** All rights reserved.
******************************************************************************/


#pragma once

#include <lgrGui/lgrGui.h>
#include <QPainter>
#include <QRect>
#include <QWidget>
#include <lgrGui/dragComponent.h>
#include <lgrGui/lgrZoomableWidget.h>

class QBoxLayout;

namespace MAKLogger
{
   class DtBoundsSlider;
   class DtVectorButton;
   class DtLgrTimeBarWidget;
   class DtTimelineBar;
   class DT_DLL_LGRGUI DtLgrTimeBarZoomBox : public DtLgrZoomableWidget, public DtDragComponent
   {
      Q_OBJECT
   public:
      //CTOR
      DtLgrTimeBarZoomBox(DtTimelineBar* parent);

      //DTOR
      ~DtLgrTimeBarZoomBox();

      virtual QRect zoomBox();

      virtual void init();

      virtual void setPressed(bool pressed);

      virtual bool pressed();

      virtual void drawZoomBox(QPainter& painter);

      virtual void setZoomBoxColor( QColor zoomBoxColor );

      virtual void setZoomBoxBorderColors( QColor darkBorder, QColor midBorder, QColor lightBorder );

      virtual void setHidden(bool);

      virtual bool hidden();

      virtual float start();

      virtual float stop();

      virtual void setStartAndEnd(float, float);

      virtual void setStartAndEndPercent(float, float);

      virtual void setLeftEdge(float);

      virtual void setRightEdge(float);

      virtual void resizeWindowEvent();

     virtual bool cursorOnEdge(QMouseEvent* e);

     virtual void dragZoomBox();

     virtual void dragZoomBoxRightEdge();

     virtual void dragZoomBoxLeftEdge();

     virtual bool edgesAreValid(float newLeftEdge, float newRightEdge);

     enum DtLgrZoomBoxEdge
     {
        NO_EDGE,
        LEFT_EDGE,
        RIGHT_EDGE 
     };

   public slots:
      virtual void adjustZoomBoxSize(int delta);

      virtual void setDrawnTimes(float);

      virtual void followModeChanged(bool enableFollow);

   protected:
      virtual void mouseReleaseEvent(QMouseEvent*);
      virtual void mouseMoveEvent( QMouseEvent* );
      virtual void mousePressEvent( QMouseEvent* );

signals:
      void pressedChanged(float);
      void positionChanged(float);
      void startAndEndChanged(float,float);


   protected:
      DtTimelineBar* myTimeBar;
      QRect* myDrawableBox;

      QColor myZoomBoxColor;
      QColor myDarkBorderColor;
      QColor myMidBorderColor;
      QColor myLightBorderColor;
     
      float myStart;   //Percentage value of where the right edge is on the timebar
      float myStop;    //Percentage value of where the left edge is on the timebar
      float myLeftEdge;   //Value of X position of left edge
      float myRightEdge;  //Value of X position of right edge
      float myLeftMostEdge;  //left edge of timebar parent
      float myRightMostEdge; //right edge of timebar parent
      float myEdgeToPercentFactor; // 100.0 / right most edge
      float myPercentToEdgeFactor; // right most edge / 100.0
      float myMargin;  //Width of the margin on the side of the timebar
      float myVisualDuration; //Amount of seconds currently visible in the visibleTimebarLine
      int myWheelClickResolution; //A smaller value will zoom faster, a larger value will zoom slower. 
      int myCurrentEdge; //Used to keep track of which edge is clicked

      //Bool to keep track whether the zoomBox is pressed or not
      bool myPressed;
      //Bool to track whether the box is hidden or not
      bool myHidden;
      //Bool to track if the zoomBox is at its minimum size.
      bool myAtMinimumSize;
   };

}