qui/seqbrowser/SequenceBrowser.cpp

   1 #include <QApplication>
   2 #include <QClipboard>
   3 #include <QDir>
   4 #include <QFileDialog>
   5 #include <QMessageBox>
   6 #include <QMouseEvent>
   7 #include <QRubberBand>
   8 #include <QRect>
   9 #include <QString>
  10 #include <iostream>
  11 #include <set>
  12
  13 #include <math.h>
  14
  15 #include "qui/seqbrowser/SequenceBrowser.hpp"
  16 #include "mussa_exceptions.hpp"
  17
  18 using namespace std;
  19
  20 SequenceBrowser::SequenceBrowser(QWidget *parent)
  21   : QGLWidget(parent),
  22     rubberBand(0),
  23     popupMenu(this),
  24     copySelectedSequenceAsFastaAction(tr("&Copy as Fasta"), this)
  25 {
  26   connect(&copySelectedSequenceAsFastaAction, SIGNAL(triggered()),
  27           this, SLOT(copySelectedSequenceAsFasta()));
  28   popupMenu.addAction(&copySelectedSequenceAsFastaAction);
  29 }
  30
  31 QSize SequenceBrowser::sizeHint() const
  32 {
  33   //return QSize((int)GlSeqBrowser::viewportHeight(), (int)GlSeqBrowser::viewportWidth());
  34   return QSize(600, 400);
  35 }
  36
  37 void SequenceBrowser::setViewportCenter(float x)
  38 {
  39   const float epsilon = 1e-10;
  40   float center = GlSeqBrowser::viewportCenter();
  41   float difference = fabsf(x - center);
  42   float abs_x = fabsf(x);
  43   center = fabsf(center);
  44
  45   // the difference < epsilon * val is one of the recommended tests
  46   // for float equality.
  47   // of course since we're looking for not equals, we need to toss a
  48   // not at the beginning
  49   if (not (difference < epsilon * abs_x or difference < epsilon * center))
  50   {
  51     GlSeqBrowser::setViewportCenter(x);
  52     emit viewportChanged();
  53     update();
  54   }
  55 }
  56
  57 void SequenceBrowser::setZoom(double new_zoom)
  58 {
  59   if (new_zoom != GlSeqBrowser::zoom()) {
  60     GlSeqBrowser::setZoom(new_zoom);
  61     emit viewportChanged();
  62     update();
  63   }
  64 }
  65
  66 void SequenceBrowser::setClipPlane(int )
  67 {
  68 /*
  69   if (clipZ != (double) newZ){
  70     clipZ = (double) newZ;
  71     update();
  72   }
  73 */
  74 }
  75
  76 void SequenceBrowser::copySelectedSequenceAsFasta()
  77 {
  78   // get fasta data
  79   std::string buffer;
  80   copySelectedTracksAsFasta(buffer);
  81
  82   // get reference to clipboard
  83   QClipboard *clipboard = QApplication::clipboard();
  84   clipboard->setText(buffer.c_str());
  85 }
  86
  87
  88 void SequenceBrowser::clear()
  89 {
  90   GlSeqBrowser::clear();
  91   emit tracksChanged();
  92 }
  93
  94 void SequenceBrowser::displayContextMenu(const QPoint& point)
  95 {
  96   popupMenu.popup(point);
  97 }
  98
  99 void SequenceBrowser::push_sequence(const Sequence &s)
 100 {
 101   GlSeqBrowser::push_sequence(s);
 102   emit tracksChanged();
 103 }
 104
 105 void SequenceBrowser::push_sequence(GlSequence &gs)
 106 {
 107   GlSeqBrowser::push_sequence(gs);
 108   emit tracksChanged();
 109 }
 110
 111 ////////////////////
 112 // Rendering code
 113 void SequenceBrowser::initializeGL()
 114 {
 115   GlSeqBrowser::initializeGL();
 116 }
 117
 118 void SequenceBrowser::resizeGL(int width, int height)
 119 {
 120   GlSeqBrowser::resizeGL(width, height);
 121   emit viewportChanged();
 122 }
 123
 124 void SequenceBrowser::paintGL()
 125 {
 126   GlSeqBrowser::paintGL();
 127 }
 128
 129 void SequenceBrowser::mousePressEvent( QMouseEvent *e)
 130 {
 131   switch(e->button()) {
 132     case Qt::LeftButton:
 133       startSelecting(e);
 134       break;
 135    case Qt::RightButton:
 136       break;
 137    default:
 138       break;
 139   }
 140 }
 141
 142 void SequenceBrowser::mouseMoveEvent( QMouseEvent *e )
 143 {
 144   if (rubberBand and rubberBand->isVisible()) {
 145     rubberBand->setGeometry(QRect(bandOrigin, e->pos()).normalized());
 146   }
 147 }
 148
 149 void SequenceBrowser::mouseReleaseEvent( QMouseEvent *e)
 150 {
 151   switch(e->button()) {
 152     case Qt::LeftButton:
 153       stopSelecting(e);
 154       break;
 155    case Qt::RightButton:
 156       // ok so selectedMode and drawing mode should probably be combinded
 157       // into a single state variable.
 158       if (rubberBand and
 159           not rubberBand->isVisible() and
 160           selectedCanvasRegion.contains(e->pos())) {
 161         displayContextMenu(e->globalPos());
 162       }
 163       break;
 164    default:
 165       break;
 166   }
 167
 168 }
 169
 170 void SequenceBrowser::startSelecting(QMouseEvent *e)
 171 {
 172   if (!rubberBand)
 173     rubberBand = new QRubberBand(QRubberBand::Rectangle, this);
 174
 175   if (not rubberBand->isVisible()) {
 176     bandOrigin = e->pos();
 177     rubberBand->setGeometry(QRect(bandOrigin, QSize()));
 178     rubberBand->show();
 179   }
 180 }
 181
 182 void SequenceBrowser::stopSelecting(QMouseEvent *e)
 183 {
 184   if (rubberBand and rubberBand->isVisible()) {
 185     rubberBand->hide();
 186     selectedMode = false;
 187     QRect r = QRect(bandOrigin, e->pos()).normalized();
 188     bandOrigin = r.topLeft();
 189
 190     selectRegion(r.top(), r.left(), r.bottom(), r.right());
 191     selectedCanvasRegion = r;
 192   }
 193 }