Shamusworld >> Repos - architektonas/blob - src/actions/actiondrawlinetangent1.h

   1 #ifndef __ACTIONDRAWLINETANGENT1_H__
   2 #define __ACTIONDRAWLINETANGENT1_H__
   3
   4 #include "line.h"
   5 #include "actioninterface.h"
   6 #include "vector.h"
   7
   8 class Line;
   9 class Entity;
  10
  11 /**
  12  * This action class can handle user events to draw tangents from points
  13  * to circles.
  14  *
  15  * @author James Hammons
  16  * @author Andrew Mustun
  17  */
  18 class ActionDrawLineTangent1: public ActionInterface
  19 {
  20         private:
  21                 enum Status {
  22                         SetPoint,     /**< Choose the startpoint. */
  23                         SetCircle      /**< Choose the circle / arc. */
  24                 };
  25
  26         public:
  27                 ActionDrawLineTangent1(EntityContainer & container, GraphicView & graphicView);
  28                 ~ActionDrawLineTangent1();
  29
  30                 virtual void trigger();
  31                 virtual void mouseMoveEvent(QMouseEvent * e);
  32                 virtual void mouseReleaseEvent(QMouseEvent * e);
  33                 virtual void coordinateEvent(Vector * e);
  34                 virtual void updateMouseButtonHints();
  35                 virtual void updateMouseCursor();
  36                 virtual void updateToolBar();
  37
  38         private:
  39                 /** Closest tangent. */
  40                 Line * tangent;
  41                 /** Chosen startpoint */
  42                 Vector point;
  43                 /** Chosen entity */
  44                 Entity * circle;
  45                 /** Data of new tangent */
  46                 LineData data;
  47 };
  48
  49 #endif  // __ACTIONDRAWLINETANGENT1_H__