Shamusworld >> Repos - architektonas/blob - src/actions/rs_actiondrawlinetangent1.h

   1 #ifndef RS_ACTIONDRAWLINETANGENT1_H
   2 #define RS_ACTIONDRAWLINETANGENT1_H
   3
   4 #include "rs_line.h"
   5 #include "rs_previewactioninterface.h"
   6 #include "vector.h"
   7
   8 class RS_Line;
   9 class RS_Entity;
  10
  11 /**
  12  * This action class can handle user events to draw tangents from points
  13  * to circles.
  14  *
  15  * @author Andrew Mustun
  16  */
  17 class RS_ActionDrawLineTangent1: public RS_PreviewActionInterface
  18 {
  19         private:
  20                 enum Status {
  21                         SetPoint,     /**< Choose the startpoint. */
  22                         SetCircle      /**< Choose the circle / arc. */
  23                 };
  24
  25         public:
  26                 RS_ActionDrawLineTangent1(RS_EntityContainer & container, RS_GraphicView & graphicView);
  27                 ~RS_ActionDrawLineTangent1();
  28
  29                 virtual void trigger();
  30                 virtual void mouseMoveEvent(QMouseEvent * e);
  31                 virtual void mouseReleaseEvent(QMouseEvent * e);
  32                 virtual void coordinateEvent(Vector * e);
  33                 virtual void updateMouseButtonHints();
  34                 virtual void updateMouseCursor();
  35                 virtual void updateToolBar();
  36
  37         private:
  38                 /** Closest tangent. */
  39                 RS_Line * tangent;
  40                 /** Chosen startpoint */
  41                 Vector point;
  42                 /** Chosen entity */
  43                 RS_Entity * circle;
  44                 /** Data of new tangent */
  45                 RS_LineData data;
  46 };
  47
  48 #endif