Shamusworld >> Repos - architektonas/blob - src/drawlineaction.cpp

   1 // drawlineaction.cpp: Action class for drawing lines
   2 //
   3 // Part of the Architektonas Project
   4 // (C) 2011 Underground Software
   5 // See the README and GPLv3 files for licensing and warranty information
   6 //
   7 // JLH = James Hammons <jlhamm@acm.org>
   8 //
   9 // WHO  WHEN        WHAT
  10 // ---  ----------  ------------------------------------------------------------
  11 // JLH  10/04/2011  Created this file
  12 // JLH  11/07/2011  Made it so this class actually does something ;-)
  13 //
  14
  15 #include "drawlineaction.h"
  16 #include "line.h"
  17 #include "painter.h"
  18 //#include "vector.h"
  19
  20
  21 #define FIRST_POINT 0
  22 #define NEXT_POINT 1
  23
  24
  25 DrawLineAction::DrawLineAction(): state(0), line(NULL)
  26 {
  27 }
  28
  29 DrawLineAction::~DrawLineAction()
  30 {
  31 }
  32
  33
  34 /*virtual*/ void DrawLineAction::Draw(Painter * painter)
  35 {
  36         painter->SetPen(QPen(Qt::red, 2.0, Qt::DotLine));
  37
  38         // I think stuff like crosshairs should be done in the DrawingView, tho
  39         if (state == FIRST_POINT)
  40         {
  41                 painter->DrawHandle(p1);
  42         }
  43         else
  44         {
  45                 painter->DrawLine(p1, p2);
  46                 painter->DrawHandle(p2);
  47         }
  48 }
  49
  50 /*virtual*/ void DrawLineAction::MouseDown(Vector point)
  51 {
  52         if (state == FIRST_POINT)
  53                 p1 = point;
  54         else
  55                 p2 = point;
  56 }
  57
  58 /*virtual*/ void DrawLineAction::MouseMoved(Vector point)
  59 {
  60         if (state == FIRST_POINT)
  61                 p1 = point;
  62         else
  63                 p2 = point;
  64 }
  65
  66 /*virtual*/ void DrawLineAction::MouseReleased(void)
  67 {
  68         if (state == FIRST_POINT)
  69         {
  70                 p2 = p1;
  71                 state = NEXT_POINT;
  72         }
  73         else if (state == NEXT_POINT)
  74         {
  75                 // We create the new object here, and then pass it off to the
  76                 // DrawingView which stuffs it into the document.
  77                 line = new Line(p1, p2);
  78                 // We don't need no stinkin' sentinels, when we have signals & slots!
  79                 emit ObjectReady(line);
  80
  81                 p1 = p2;
  82         }
  83 }