Shamusworld >> Repos - architektonas/blob - src/actions/rs_actionzoompan.cpp

   1 // rs_actionzoompan.cpp
   2 //
   3 // Part of the Architektonas Project
   4 // Originally part of QCad Community Edition by Andrew Mustun
   5 // Extensively rewritten and refactored by James L. Hammons
   6 // (C) 2010 Underground Software
   7 //
   8 // JLH = James L. Hammons <jlhamm@acm.org>
   9 //
  10 // Who  When        What
  11 // ---  ----------  -----------------------------------------------------------
  12 // JLH  06/05/2010  Added this text. :-)
  13 //
  14
  15 #include "rs_actionzoompan.h"
  16
  17 #include "graphicview.h"
  18
  19 RS_ActionZoomPan::RS_ActionZoomPan(RS_EntityContainer & container, GraphicView & graphicView):
  20         RS_ActionInterface("Zoom Pan", container, graphicView)
  21 {
  22 }
  23
  24 RS_ActionZoomPan::~RS_ActionZoomPan()
  25 {
  26 }
  27
  28 void RS_ActionZoomPan::init(int status)
  29 {
  30         RS_ActionInterface::init(status);
  31         snapMode = RS2::SnapFree;
  32         snapRes = RS2::RestrictNothing;
  33         x1 = y1 = x2 = y2 = -1;
  34 }
  35
  36 void RS_ActionZoomPan::trigger()
  37 {
  38         if (x1 >= 0)
  39         {
  40                 graphicView->zoomPan(x2 - x1, y2 - y1);
  41                 x1 = x2;
  42                 y1 = y2;
  43         }
  44 }
  45
  46 void RS_ActionZoomPan::mouseMoveEvent(QMouseEvent * e)
  47 {
  48         x2 = e->x();
  49         y2 = e->y();
  50
  51 //This is where we see if the delta was big enough to warrant a redraw...
  52         if (getStatus() == 1 && (abs(x2 - x1) > 7 || abs(y2 - y1) > 7))
  53                 trigger();
  54 }
  55
  56 void RS_ActionZoomPan::mousePressEvent(QMouseEvent * e)
  57 {
  58         if (e->button() == Qt::MidButton || e->button() == Qt::LeftButton)
  59         {
  60                 x1 = e->x();
  61                 y1 = e->y();
  62                 setStatus(1);
  63         }
  64 }
  65
  66 void RS_ActionZoomPan::mouseReleaseEvent(QMouseEvent * e)
  67 {
  68         if (e->button() == Qt::RightButton)
  69                 init(getStatus() - 1);
  70         else if (e->button() == Qt::MidButton)
  71                 init(-1);
  72         else
  73                 setStatus(0);
  74
  75         //RS_DEBUG->print("RS_ActionZoomPan::mousePressEvent(): %f %f", v1.x, v1.y);
  76 }
  77
  78 void RS_ActionZoomPan::updateMouseCursor()
  79 {
  80 #ifndef __APPLE__
  81         graphicView->setMouseCursor(RS2::SizeAllCursor);
  82 #endif
  83 }