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
  30 DrawLineAction::~DrawLineAction()
  31 {
  32 }
  33
  34
  35 /*virtual*/ void DrawLineAction::Draw(Painter * painter)
  36 {
  37         painter->SetPen(QPen(Qt::red, 2.0, Qt::DotLine));
  38
  39         // I think stuff like crosshairs should be done in the DrawingView, tho
  40         if (state == FIRST_POINT)
  41         {
  42                 painter->DrawHandle(p1);
  43         }
  44         else
  45         {
  46                 painter->DrawLine(p1, p2);
  47                 painter->DrawHandle(p2);
  48
  49                 QString text = tr("Length: %1 in.");
  50                 text = text.arg(Vector::Magnitude(p1, p2));
  51                 painter->DrawInformativeText(text);
  52         }
  53 }
  54
  55
  56 /*virtual*/ void DrawLineAction::MouseDown(Vector point)
  57 {
  58         if (state == FIRST_POINT)
  59                 p1 = point;
  60         else
  61                 p2 = point;
  62 }
  63
  64
  65 /*virtual*/ void DrawLineAction::MouseMoved(Vector point)
  66 {
  67         if (state == FIRST_POINT)
  68                 p1 = point;
  69         else
  70                 p2 = point;
  71 }
  72
  73
  74 /*virtual*/ void DrawLineAction::MouseReleased(void)
  75 {
  76         if (state == FIRST_POINT)
  77         {
  78                 p2 = p1;
  79                 state = NEXT_POINT;
  80         }
  81         else if (state == NEXT_POINT)
  82         {
  83                 // We create the new object here, and then pass it off to the
  84                 // DrawingView which stuffs it into the document.
  85                 line = new Line(p1, p2);
  86                 // We don't need no stinkin' sentinels, when we have signals & slots!
  87                 emit ObjectReady(line);
  88
  89 //              p1 = p2;
  90                 state = FIRST_POINT;
  91         }
  92 }
  93