libpappsomspp
Library for mass spectrometry
baseplotwidget.cpp
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1 /* This code comes right from the msXpertSuite software project.
2  *
3  * msXpertSuite - mass spectrometry software suite
4  * -----------------------------------------------
5  * Copyright(C) 2009,...,2018 Filippo Rusconi
6  *
7  * http://www.msxpertsuite.org
8  *
9  * This program is free software: you can redistribute it and/or modify
10  * it under the terms of the GNU General Public License as published by
11  * the Free Software Foundation, either version 3 of the License, or
12  * (at your option) any later version.
13  *
14  * This program is distributed in the hope that it will be useful,
15  * but WITHOUT ANY WARRANTY; without even the implied warranty of
16  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17  * GNU General Public License for more details.
18  *
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20  * along with this program. If not, see <http://www.gnu.org/licenses/>.
21  *
22  * END software license
23  */
24 
25 
26 /////////////////////// StdLib includes
27 #include <vector>
28 
29 
30 /////////////////////// Qt includes
31 #include <QVector>
32 
33 
34 /////////////////////// Local includes
35 #include "../../types.h"
36 #include "baseplotwidget.h"
37 #include "../../pappsoexception.h"
38 #include "../../exception/exceptionnotpossible.h"
39 
40 
42  qRegisterMetaType<pappso::BasePlotContext>("pappso::BasePlotContext");
44  qRegisterMetaType<pappso::BasePlotContext *>("pappso::BasePlotContext *");
45 
46 
47 namespace pappso
48 {
49 BasePlotWidget::BasePlotWidget(QWidget *parent) : QCustomPlot(parent)
50 {
51  if(parent == nullptr)
52  qFatal("Programming error.");
53 
54  // Default settings for the pen used to graph the data.
55  m_pen.setStyle(Qt::SolidLine);
56  m_pen.setBrush(Qt::black);
57  m_pen.setWidth(1);
58 
59  // qDebug() << "Created new BasePlotWidget with" << layerCount()
60  //<< "layers before setting up widget.";
61  // qDebug().noquote() << "All layer names:\n" << allLayerNamesToString();
62 
63  // As of today 20210313, the QCustomPlot is created with the following 6
64  // layers:
65  //
66  // All layers' name:
67  //
68  // Layer index 0 name: background
69  // Layer index 1 name: grid
70  // Layer index 2 name: main
71  // Layer index 3 name: axes
72  // Layer index 4 name: legend
73  // Layer index 5 name: overlay
74 
75  if(!setupWidget())
76  qFatal("Programming error.");
77 
78  // Do not call createAllAncillaryItems() in this base class because all the
79  // items will have been created *before* the addition of plots and then the
80  // rendering order will hide them to the viewer, since the rendering order is
81  // according to the order in which the items have been created.
82  //
83  // The fact that the ancillary items are created before trace plots is not a
84  // problem because the trace plots are sparse and do not effectively hide the
85  // data.
86  //
87  // But, in the color map plot widgets, we cannot afford to create the
88  // ancillary items *before* the plot itself because then, the rendering of the
89  // plot (created after) would screen off the ancillary items (created before).
90  //
91  // So, the createAllAncillaryItems() function needs to be called in the
92  // derived classes at the most appropriate moment in the setting up of the
93  // widget.
94  //
95  // All this is only a workaround of a bug in QCustomPlot. See
96  // https://www.qcustomplot.com/index.php/support/forum/2283.
97  //
98  // I initially wanted to have a plots layer on top of the default background
99  // layer and a items layer on top of it. But that setting prevented the
100  // selection of graphs.
101 
102  // qDebug() << "Created new BasePlotWidget with" << layerCount()
103  //<< "layers after setting up widget.";
104  // qDebug().noquote() << "All layer names:\n" << allLayerNamesToString();
105 
106  show();
107 }
108 
109 
111  const QString &x_axis_label,
112  const QString &y_axis_label)
113  : QCustomPlot(parent), m_axisLabelX(x_axis_label), m_axisLabelY(y_axis_label)
114 {
115  // qDebug();
116 
117  if(parent == nullptr)
118  qFatal("Programming error.");
119 
120  // Default settings for the pen used to graph the data.
121  m_pen.setStyle(Qt::SolidLine);
122  m_pen.setBrush(Qt::black);
123  m_pen.setWidth(1);
124 
125  xAxis->setLabel(x_axis_label);
126  yAxis->setLabel(y_axis_label);
127 
128  // qDebug() << "Created new BasePlotWidget with" << layerCount()
129  //<< "layers before setting up widget.";
130  // qDebug().noquote() << "All layer names:\n" << allLayerNamesToString();
131 
132  // As of today 20210313, the QCustomPlot is created with the following 6
133  // layers:
134  //
135  // All layers' name:
136  //
137  // Layer index 0 name: background
138  // Layer index 1 name: grid
139  // Layer index 2 name: main
140  // Layer index 3 name: axes
141  // Layer index 4 name: legend
142  // Layer index 5 name: overlay
143 
144  if(!setupWidget())
145  qFatal("Programming error.");
146 
147  // qDebug() << "Created new BasePlotWidget with" << layerCount()
148  //<< "layers after setting up widget.";
149  // qDebug().noquote() << "All layer names:\n" << allLayerNamesToString();
150 
151  show();
152 }
153 
154 
155 //! Destruct \c this BasePlotWidget instance.
156 /*!
157 
158  The destruction involves clearing the history, deleting all the axis range
159  history items for x and y axes.
160 
161 */
163 {
164  // qDebug() << "In the destructor of plot widget:" << this;
165 
166  m_xAxisRangeHistory.clear();
167  m_yAxisRangeHistory.clear();
168 
169  // Note that the QCustomPlot xxxItem objects are allocated with (this) which
170  // means their destruction is automatically handled upon *this' destruction.
171 }
172 
173 
174 QString
176 {
177 
178  QString text;
179 
180  for(int iter = 0; iter < layerCount(); ++iter)
181  {
182  text +=
183  QString("Layer index %1: %2\n").arg(iter).arg(layer(iter)->name());
184  }
185 
186  return text;
187 }
188 
189 
190 QString
191 BasePlotWidget::layerableLayerName(QCPLayerable *layerable_p) const
192 {
193  if(layerable_p == nullptr)
194  qFatal("Programming error.");
195 
196  QCPLayer *layer_p = layerable_p->layer();
197 
198  return layer_p->name();
199 }
200 
201 
202 int
203 BasePlotWidget::layerableLayerIndex(QCPLayerable *layerable_p) const
204 {
205  if(layerable_p == nullptr)
206  qFatal("Programming error.");
207 
208  QCPLayer *layer_p = layerable_p->layer();
209 
210  for(int iter = 0; iter < layerCount(); ++iter)
211  {
212  if(layer(iter) == layer_p)
213  return iter;
214  }
215 
216  return -1;
217 }
218 
219 
220 void
222 {
223  // Make a copy of the pen to just change its color and set that color to
224  // the tracer line.
225  QPen pen = m_pen;
226 
227  // Create the lines that will act as tracers for position and selection of
228  // regions.
229  //
230  // We have the cross hair that serves as the cursor. That crosshair cursor is
231  // made of a vertical line (green, because when click-dragging the mouse it
232  // becomes the tracer that is being anchored at the region start. The second
233  // line i horizontal and is always black.
234 
235  pen.setColor(QColor("steelblue"));
236 
237  // The set of tracers (horizontal and vertical) that track the position of the
238  // mouse cursor.
239 
240  mp_vPosTracerItem = new QCPItemLine(this);
241  mp_vPosTracerItem->setLayer("plotsLayer");
242  mp_vPosTracerItem->setPen(pen);
243  mp_vPosTracerItem->start->setType(QCPItemPosition::ptPlotCoords);
244  mp_vPosTracerItem->end->setType(QCPItemPosition::ptPlotCoords);
245  mp_vPosTracerItem->start->setCoords(0, 0);
246  mp_vPosTracerItem->end->setCoords(0, 0);
247 
248  mp_hPosTracerItem = new QCPItemLine(this);
249  mp_hPosTracerItem->setLayer("plotsLayer");
250  mp_hPosTracerItem->setPen(pen);
251  mp_hPosTracerItem->start->setType(QCPItemPosition::ptPlotCoords);
252  mp_hPosTracerItem->end->setType(QCPItemPosition::ptPlotCoords);
253  mp_hPosTracerItem->start->setCoords(0, 0);
254  mp_hPosTracerItem->end->setCoords(0, 0);
255 
256  // The set of tracers (horizontal only) that track the region
257  // spanning/selection regions.
258  //
259  // The start vertical tracer is colored in greeen.
260  pen.setColor(QColor("green"));
261 
262  mp_vStartTracerItem = new QCPItemLine(this);
263  mp_vStartTracerItem->setLayer("plotsLayer");
264  mp_vStartTracerItem->setPen(pen);
265  mp_vStartTracerItem->start->setType(QCPItemPosition::ptPlotCoords);
266  mp_vStartTracerItem->end->setType(QCPItemPosition::ptPlotCoords);
267  mp_vStartTracerItem->start->setCoords(0, 0);
268  mp_vStartTracerItem->end->setCoords(0, 0);
269 
270  // The end vertical tracer is colored in red.
271  pen.setColor(QColor("red"));
272 
273  mp_vEndTracerItem = new QCPItemLine(this);
274  mp_vEndTracerItem->setLayer("plotsLayer");
275  mp_vEndTracerItem->setPen(pen);
276  mp_vEndTracerItem->start->setType(QCPItemPosition::ptPlotCoords);
277  mp_vEndTracerItem->end->setType(QCPItemPosition::ptPlotCoords);
278  mp_vEndTracerItem->start->setCoords(0, 0);
279  mp_vEndTracerItem->end->setCoords(0, 0);
280 
281  // When the user click-drags the mouse, the X distance between the drag start
282  // point and the drag end point (current point) is the xDelta.
283  mp_xDeltaTextItem = new QCPItemText(this);
284  mp_xDeltaTextItem->setLayer("plotsLayer");
285  mp_xDeltaTextItem->setColor(QColor("steelblue"));
286  mp_xDeltaTextItem->setPositionAlignment(Qt::AlignBottom | Qt::AlignCenter);
287  mp_xDeltaTextItem->position->setType(QCPItemPosition::ptPlotCoords);
288  mp_xDeltaTextItem->setVisible(false);
289 
290  // Same for the y delta
291  mp_yDeltaTextItem = new QCPItemText(this);
292  mp_yDeltaTextItem->setLayer("plotsLayer");
293  mp_yDeltaTextItem->setColor(QColor("steelblue"));
294  mp_yDeltaTextItem->setPositionAlignment(Qt::AlignBottom | Qt::AlignCenter);
295  mp_yDeltaTextItem->position->setType(QCPItemPosition::ptPlotCoords);
296  mp_yDeltaTextItem->setVisible(false);
297 
298  // Make sure we prepare the four lines that will be needed to
299  // draw the selection rectangle.
300  pen = m_pen;
301 
302  pen.setColor("steelblue");
303 
304  mp_selectionRectangeLine1 = new QCPItemLine(this);
305  mp_selectionRectangeLine1->setLayer("plotsLayer");
306  mp_selectionRectangeLine1->setPen(pen);
307  mp_selectionRectangeLine1->start->setType(QCPItemPosition::ptPlotCoords);
308  mp_selectionRectangeLine1->end->setType(QCPItemPosition::ptPlotCoords);
309  mp_selectionRectangeLine1->start->setCoords(0, 0);
310  mp_selectionRectangeLine1->end->setCoords(0, 0);
311  mp_selectionRectangeLine1->setVisible(false);
312 
313  mp_selectionRectangeLine2 = new QCPItemLine(this);
314  mp_selectionRectangeLine2->setLayer("plotsLayer");
315  mp_selectionRectangeLine2->setPen(pen);
316  mp_selectionRectangeLine2->start->setType(QCPItemPosition::ptPlotCoords);
317  mp_selectionRectangeLine2->end->setType(QCPItemPosition::ptPlotCoords);
318  mp_selectionRectangeLine2->start->setCoords(0, 0);
319  mp_selectionRectangeLine2->end->setCoords(0, 0);
320  mp_selectionRectangeLine2->setVisible(false);
321 
322  mp_selectionRectangeLine3 = new QCPItemLine(this);
323  mp_selectionRectangeLine3->setLayer("plotsLayer");
324  mp_selectionRectangeLine3->setPen(pen);
325  mp_selectionRectangeLine3->start->setType(QCPItemPosition::ptPlotCoords);
326  mp_selectionRectangeLine3->end->setType(QCPItemPosition::ptPlotCoords);
327  mp_selectionRectangeLine3->start->setCoords(0, 0);
328  mp_selectionRectangeLine3->end->setCoords(0, 0);
329  mp_selectionRectangeLine3->setVisible(false);
330 
331  mp_selectionRectangeLine4 = new QCPItemLine(this);
332  mp_selectionRectangeLine4->setLayer("plotsLayer");
333  mp_selectionRectangeLine4->setPen(pen);
334  mp_selectionRectangeLine4->start->setType(QCPItemPosition::ptPlotCoords);
335  mp_selectionRectangeLine4->end->setType(QCPItemPosition::ptPlotCoords);
336  mp_selectionRectangeLine4->start->setCoords(0, 0);
337  mp_selectionRectangeLine4->end->setCoords(0, 0);
338  mp_selectionRectangeLine4->setVisible(false);
339 }
340 
341 
342 bool
344 {
345  // qDebug();
346 
347  // By default the widget comes with a graph. Remove it.
348 
349  if(graphCount())
350  {
351  // QCPLayer *layer_p = graph(0)->layer();
352  // qDebug() << "The graph was on layer:" << layer_p->name();
353 
354  // As of today 20210313, the graph is created on the currentLayer(), that
355  // is "main".
356 
357  removeGraph(0);
358  }
359 
360  // The general idea is that we do want custom layers for the trace|colormap
361  // plots.
362 
363  // qDebug().noquote() << "Right before creating the new layer, layers:\n"
364  //<< allLayerNamesToString();
365 
366  // Add the layer that will store all the plots and all the ancillary items.
367  addLayer(
368  "plotsLayer", layer("background"), QCustomPlot::LayerInsertMode::limAbove);
369  // qDebug().noquote() << "Added new plotsLayer, layers:\n"
370  //<< allLayerNamesToString();
371 
372  // This is required so that we get the keyboard events.
373  setFocusPolicy(Qt::StrongFocus);
374  setInteractions(QCP::iRangeZoom | QCP::iSelectPlottables | QCP::iMultiSelect);
375 
376  // We want to capture the signals emitted by the QCustomPlot base class.
377  connect(
378  this, &QCustomPlot::mouseMove, this, &BasePlotWidget::mouseMoveHandler);
379 
380  connect(
381  this, &QCustomPlot::mousePress, this, &BasePlotWidget::mousePressHandler);
382 
383  connect(this,
384  &QCustomPlot::mouseRelease,
385  this,
387 
388  connect(
389  this, &QCustomPlot::mouseWheel, this, &BasePlotWidget::mouseWheelHandler);
390 
391  connect(this,
392  &QCustomPlot::axisDoubleClick,
393  this,
395 
396  return true;
397 }
398 
399 
400 void
401 BasePlotWidget::setPen(const QPen &pen)
402 {
403  m_pen = pen;
404 }
405 
406 
407 const QPen &
409 {
410  return m_pen;
411 }
412 
413 
414 void
415 BasePlotWidget::setPlottingColor(QCPAbstractPlottable *plottable_p,
416  const QColor &new_color)
417 {
418  if(plottable_p == nullptr)
419  qFatal("Pointer cannot be nullptr.");
420 
421  // First this single-graph widget
422  QPen pen;
423 
424  pen = plottable_p->pen();
425  pen.setColor(new_color);
426  plottable_p->setPen(pen);
427 
428  replot();
429 }
430 
431 
432 void
433 BasePlotWidget::setPlottingColor(int index, const QColor &new_color)
434 {
435  if(!new_color.isValid())
436  return;
437 
438  QCPGraph *graph_p = graph(index);
439 
440  if(graph_p == nullptr)
441  qFatal("Programming error.");
442 
443  return setPlottingColor(graph_p, new_color);
444 }
445 
446 
447 QColor
448 BasePlotWidget::getPlottingColor(QCPAbstractPlottable *plottable_p) const
449 {
450  if(plottable_p == nullptr)
451  qFatal("Programming error.");
452 
453  return plottable_p->pen().color();
454 }
455 
456 
457 QColor
459 {
460  QCPGraph *graph_p = graph(index);
461 
462  if(graph_p == nullptr)
463  qFatal("Programming error.");
464 
465  return getPlottingColor(graph_p);
466 }
467 
468 
469 void
470 BasePlotWidget::setAxisLabelX(const QString &label)
471 {
472  xAxis->setLabel(label);
473 }
474 
475 
476 void
477 BasePlotWidget::setAxisLabelY(const QString &label)
478 {
479  yAxis->setLabel(label);
480 }
481 
482 
483 // AXES RANGE HISTORY-related functions
484 void
486 {
487  m_xAxisRangeHistory.clear();
488  m_yAxisRangeHistory.clear();
489 
490  m_xAxisRangeHistory.push_back(new QCPRange(xAxis->range()));
491  m_yAxisRangeHistory.push_back(new QCPRange(yAxis->range()));
492 
493  // qDebug() << "size of history:" << m_xAxisRangeHistory.size()
494  //<< "setting index to 0";
495 
496  // qDebug() << "resetting axes history to values:" << xAxis->range().lower
497  //<< "--" << xAxis->range().upper << "and" << yAxis->range().lower
498  //<< "--" << yAxis->range().upper;
499 
501 }
502 
503 
504 //! Create new axis range history items and append them to the history.
505 /*!
506 
507  The plot widget is queried to get the current x/y-axis ranges and the
508  current ranges are appended to the history for x-axis and for y-axis.
509 
510 */
511 void
513 {
514  m_xAxisRangeHistory.push_back(new QCPRange(xAxis->range()));
515  m_yAxisRangeHistory.push_back(new QCPRange(yAxis->range()));
516 
518 
519  // qDebug() << "axes history size:" << m_xAxisRangeHistory.size()
520  //<< "current index:" << m_lastAxisRangeHistoryIndex
521  //<< xAxis->range().lower << "--" << xAxis->range().upper << "and"
522  //<< yAxis->range().lower << "--" << yAxis->range().upper;
523 }
524 
525 
526 //! Go up one history element in the axis history.
527 /*!
528 
529  If possible, back up one history item in the axis histories and update the
530  plot's x/y-axis ranges to match that history item.
531 
532 */
533 void
535 {
536  // qDebug() << "axes history size:" << m_xAxisRangeHistory.size()
537  //<< "current index:" << m_lastAxisRangeHistoryIndex;
538 
540  {
541  // qDebug() << "current index is 0 returning doing nothing";
542 
543  return;
544  }
545 
546  // qDebug() << "Setting index to:" << m_lastAxisRangeHistoryIndex - 1
547  //<< "and restoring axes history to that index";
548 
550 }
551 
552 
553 //! Get the axis histories at index \p index and update the plot ranges.
554 /*!
555 
556  \param index index at which to select the axis history item.
557 
558  \sa updateAxesRangeHistory().
559 
560 */
561 void
563 {
564  // qDebug() << "Axes history size:" << m_xAxisRangeHistory.size()
565  //<< "current index:" << m_lastAxisRangeHistoryIndex
566  //<< "asking to restore index:" << index;
567 
568  if(index >= m_xAxisRangeHistory.size())
569  {
570  // qDebug() << "index >= history size. Returning.";
571  return;
572  }
573 
574  // We want to go back to the range history item at index, which means we want
575  // to pop back all the items between index+1 and size-1.
576 
577  while(m_xAxisRangeHistory.size() > index + 1)
578  m_xAxisRangeHistory.pop_back();
579 
580  if(m_xAxisRangeHistory.size() - 1 != index)
581  qFatal("Programming error.");
582 
583  xAxis->setRange(*(m_xAxisRangeHistory.at(index)));
584  yAxis->setRange(*(m_yAxisRangeHistory.at(index)));
585 
587 
588  mp_vPosTracerItem->setVisible(false);
589  mp_hPosTracerItem->setVisible(false);
590 
591  mp_vStartTracerItem->setVisible(false);
592  mp_vEndTracerItem->setVisible(false);
593 
594 
595  // The start tracer will keep beeing represented at the last position and last
596  // size even if we call this function repetitively. So actually do not show,
597  // it will reappare as soon as the mouse is moved.
598  // if(m_shouldTracersBeVisible)
599  //{
600  // mp_vStartTracerItem->setVisible(true);
601  //}
602 
603  replot();
604 
606 
607  // qDebug() << "restored axes history to index:" << index
608  //<< "with values:" << xAxis->range().lower << "--"
609  //<< xAxis->range().upper << "and" << yAxis->range().lower << "--"
610  //<< yAxis->range().upper;
611 
613 }
614 // AXES RANGE HISTORY-related functions
615 
616 
617 /// KEYBOARD-related EVENTS
618 void
620 {
621  // qDebug() << "ENTER";
622 
623  // We need this because some keys modify our behaviour.
624  m_context.m_pressedKeyCode = event->key();
625  m_context.m_keyboardModifiers = QGuiApplication::queryKeyboardModifiers();
626 
627  if(event->key() == Qt::Key_Left || event->key() == Qt::Key_Right ||
628  event->key() == Qt::Key_Up || event->key() == Qt::Key_Down)
629  {
630  return directionKeyPressEvent(event);
631  }
632  else if(event->key() == m_leftMousePseudoButtonKey ||
633  event->key() == m_rightMousePseudoButtonKey)
634  {
635  return mousePseudoButtonKeyPressEvent(event);
636  }
637 
638  // Do not do anything here, because this function is used by derived classes
639  // that will emit the signal below. Otherwise there are going to be multiple
640  // signals sent.
641  // qDebug() << "Going to emit keyPressEventSignal(m_context);";
642  // emit keyPressEventSignal(m_context);
643 }
644 
645 
646 //! Handle specific key codes and trigger respective actions.
647 void
649 {
650  m_context.m_releasedKeyCode = event->key();
651 
652  // The keyboard key is being released, set the key code to 0.
654 
655  m_context.m_keyboardModifiers = QGuiApplication::queryKeyboardModifiers();
656 
657  // Now test if the key that was released is one of the housekeeping keys.
658  if(event->key() == Qt::Key_Backspace)
659  {
660  // qDebug();
661 
662  // The user wants to iterate back in the x/y axis range history.
664 
665  event->accept();
666  }
667  else if(event->key() == Qt::Key_Space)
668  {
669  return spaceKeyReleaseEvent(event);
670  }
671  else if(event->key() == Qt::Key_Delete)
672  {
673  // The user wants to delete a graph. What graph is to be determined
674  // programmatically:
675 
676  // If there is a single graph, then that is the graph to be removed.
677  // If there are more than one graph, then only the ones that are selected
678  // are to be removed.
679 
680  // Note that the user of this widget might want to provide the user with
681  // the ability to specify if all the children graph needs to be removed
682  // also. This can be coded in key modifiers. So provide the context.
683 
684  int graph_count = plottableCount();
685 
686  if(!graph_count)
687  {
688  // qDebug() << "Not a single graph in the plot widget. Doing
689  // nothing.";
690 
691  event->accept();
692  return;
693  }
694 
695  if(graph_count == 1)
696  {
697  // qDebug() << "A single graph is in the plot widget. Emitting a graph
698  // " "destruction requested signal for it:"
699  //<< graph();
700 
701  emit plottableDestructionRequestedSignal(this, graph(), m_context);
702  }
703  else
704  {
705  // At this point we know there are more than one graph in the plot
706  // widget. We need to get the selected one (if any).
707  QList<QCPGraph *> selected_graph_list;
708 
709  selected_graph_list = selectedGraphs();
710 
711  if(!selected_graph_list.size())
712  {
713  event->accept();
714  return;
715  }
716 
717  // qDebug() << "Number of selected graphs to be destrobyed:"
718  //<< selected_graph_list.size();
719 
720  for(int iter = 0; iter < selected_graph_list.size(); ++iter)
721  {
722  // qDebug()
723  //<< "Emitting a graph destruction requested signal for graph:"
724  //<< selected_graph_list.at(iter);
725 
727  this, selected_graph_list.at(iter), m_context);
728 
729  // We do not do this, because we want the slot called by the
730  // signal above to handle that removal. Remember that it is not
731  // possible to delete graphs manually.
732  //
733  // removeGraph(selected_graph_list.at(iter));
734  }
735  event->accept();
736  }
737  }
738  // End of
739  // else if(event->key() == Qt::Key_Delete)
740  else if(event->key() == Qt::Key_T)
741  {
742  // The user wants to toggle the visibiity of the tracers.
744 
746  hideTracers();
747  else
748  showTracers();
749 
750  event->accept();
751  }
752  else if(event->key() == Qt::Key_Left || event->key() == Qt::Key_Right ||
753  event->key() == Qt::Key_Up || event->key() == Qt::Key_Down)
754  {
755  return directionKeyReleaseEvent(event);
756  }
757  else if(event->key() == m_leftMousePseudoButtonKey ||
758  event->key() == m_rightMousePseudoButtonKey)
759  {
760  return mousePseudoButtonKeyReleaseEvent(event);
761  }
762  else if(event->key() == Qt::Key_S)
763  {
764  // The user has asked to measure the horizontal size of the rectangle and
765  // to start making a skewed selection rectangle.
766 
769 
770  // qDebug() << "Set m_context.selectRectangleWidth to"
771  //<< m_context.m_selectRectangleWidth << "upon release of S key";
772  }
773  // At this point emit the signal, since we did not treat it. Maybe the
774  // consumer widget wants to know that the keyboard key was released.
775 
777 }
778 
779 
780 void
781 BasePlotWidget::spaceKeyReleaseEvent([[maybe_unused]] QKeyEvent *event)
782 {
783  // qDebug();
784 }
785 
786 
787 void
789 {
790  // qDebug() << "event key:" << event->key();
791 
792  // The user is trying to move the positional cursor/markers. There are
793  // multiple way they can do that:
794  //
795  // 1.a. Hitting the arrow left/right keys alone will search for next pixel.
796  // 1.b. Hitting the arrow left/right keys with Alt modifier will search for a
797  // multiple of pixels that might be equivalent to one 20th of the pixel width
798  // of the plot widget.
799  // 1.c Hitting the left/right keys with Alt and Shift modifiers will search
800  // for a multiple of pixels that might be the equivalent to half of the pixel
801  // width.
802  //
803  // 2. Hitting the Control modifier will move the cursor to the next data point
804  // of the graph.
805 
806  int pixel_increment = 0;
807 
808  if(m_context.m_keyboardModifiers == Qt::NoModifier)
809  pixel_increment = 1;
810  else if(m_context.m_keyboardModifiers == Qt::AltModifier)
811  pixel_increment = 50;
812 
813  // The user is moving the positional markers. This is equivalent to a
814  // non-dragging cursor movement to the next pixel. Note that the origin is
815  // located at the top left, so key down increments and key up decrements.
816 
817  if(event->key() == Qt::Key_Left)
818  horizontalMoveMouseCursorCountPixels(-pixel_increment);
819  else if(event->key() == Qt::Key_Right)
820  horizontalMoveMouseCursorCountPixels(pixel_increment);
821  else if(event->key() == Qt::Key_Up)
822  verticalMoveMouseCursorCountPixels(-pixel_increment);
823  else if(event->key() == Qt::Key_Down)
824  verticalMoveMouseCursorCountPixels(pixel_increment);
825 
826  event->accept();
827 }
828 
829 
830 void
832 {
833  // qDebug() << "event key:" << event->key();
834  event->accept();
835 }
836 
837 
838 void
840  [[maybe_unused]] QKeyEvent *event)
841 {
842  // qDebug();
843 }
844 
845 
846 void
848 {
849 
850  QPointF pixel_coordinates(
851  xAxis->coordToPixel(m_context.m_lastCursorHoveredPoint.x()),
852  yAxis->coordToPixel(m_context.m_lastCursorHoveredPoint.y()));
853 
854  Qt::MouseButton button = Qt::NoButton;
855  QEvent::Type q_event_type = QEvent::MouseButtonPress;
856 
857  if(event->key() == m_leftMousePseudoButtonKey)
858  {
859  // Toggles the left mouse button on/off
860 
861  button = Qt::LeftButton;
862 
865 
867  q_event_type = QEvent::MouseButtonPress;
868  else
869  q_event_type = QEvent::MouseButtonRelease;
870  }
871  else if(event->key() == m_rightMousePseudoButtonKey)
872  {
873  // Toggles the right mouse button.
874 
875  button = Qt::RightButton;
876 
879 
881  q_event_type = QEvent::MouseButtonPress;
882  else
883  q_event_type = QEvent::MouseButtonRelease;
884  }
885 
886  // qDebug() << "pressed/released pseudo button:" << button
887  //<< "q_event_type:" << q_event_type;
888 
889  // Synthesize a QMouseEvent and use it.
890 
891  QMouseEvent *mouse_event_p =
892  new QMouseEvent(q_event_type,
893  pixel_coordinates,
894  mapToGlobal(pixel_coordinates.toPoint()),
895  mapToGlobal(pixel_coordinates.toPoint()),
896  button,
897  button,
899  Qt::MouseEventSynthesizedByApplication);
900 
901  if(q_event_type == QEvent::MouseButtonPress)
902  mousePressHandler(mouse_event_p);
903  else
904  mouseReleaseHandler(mouse_event_p);
905 
906  // event->accept();
907 }
908 /// KEYBOARD-related EVENTS
909 
910 
911 /// MOUSE-related EVENTS
912 
913 void
915 {
916 
917  // If we have no focus, then get it. See setFocus() to understand why asking
918  // for focus is cosly and thus why we want to make this decision first.
919  if(!hasFocus())
920  setFocus();
921 
922  // qDebug() << (graph() != nullptr);
923  // if(graph(0) != nullptr)
924  // { // check if the widget contains some graphs
925 
926  // The event->button() must be by Qt instructions considered to be 0.
927 
928  // Whatever happens, we want to store the plot coordinates of the current
929  // mouse cursor position (will be useful later for countless needs).
930 
931  // Fix from Qt5 to Qt6
932 #if QT_VERSION < 0x060000
933  QPointF mousePoint = event->localPos();
934 #else
935  QPointF mousePoint = event->position();
936 #endif
937  // qDebug() << "local mousePoint position in pixels:" << mousePoint;
938 
939  m_context.m_lastCursorHoveredPoint.setX(xAxis->pixelToCoord(mousePoint.x()));
940  m_context.m_lastCursorHoveredPoint.setY(yAxis->pixelToCoord(mousePoint.y()));
941 
942  // qDebug() << "lastCursorHoveredPoint coord:"
943  //<< m_context.m_lastCursorHoveredPoint;
944 
945  // Now, depending on the button(s) (if any) that are pressed or not, we
946  // have a different processing.
947 
948  // qDebug();
949 
950  if(m_context.m_pressedMouseButtons & Qt::LeftButton ||
951  m_context.m_pressedMouseButtons & Qt::RightButton)
953  else
955  // }
956  // qDebug();
957  event->accept();
958 }
959 
960 
961 void
963 {
964 
965  // qDebug();
967 
968  // qDebug();
969  // We are not dragging the mouse (no button pressed), simply let this
970  // widget's consumer know the position of the cursor and update the markers.
971  // The consumer of this widget will update mouse cursor position at
972  // m_context.m_lastCursorHoveredPoint if so needed.
973 
975 
976  // qDebug();
977 
978  // We are not dragging, so we do not show the region end tracer we only
979  // show the anchoring start trace that might be of use if the user starts
980  // using the arrow keys to move the cursor.
981  if(mp_vEndTracerItem != nullptr)
982  mp_vEndTracerItem->setVisible(false);
983 
984  // qDebug();
985  // Only bother with the tracers if the user wants them to be visible.
986  // Their crossing point must be exactly at the last cursor-hovered point.
987 
989  {
990  // We are not dragging, so only show the position markers (v and h);
991 
992  // qDebug();
993  if(mp_hPosTracerItem != nullptr)
994  {
995  // Horizontal position tracer.
996  mp_hPosTracerItem->setVisible(true);
997  mp_hPosTracerItem->start->setCoords(
998  xAxis->range().lower, m_context.m_lastCursorHoveredPoint.y());
999  mp_hPosTracerItem->end->setCoords(
1000  xAxis->range().upper, m_context.m_lastCursorHoveredPoint.y());
1001  }
1002 
1003  // qDebug();
1004  // Vertical position tracer.
1005  if(mp_vPosTracerItem != nullptr)
1006  {
1007  mp_vPosTracerItem->setVisible(true);
1008 
1009  mp_vPosTracerItem->setVisible(true);
1010  mp_vPosTracerItem->start->setCoords(
1011  m_context.m_lastCursorHoveredPoint.x(), yAxis->range().upper);
1012  mp_vPosTracerItem->end->setCoords(
1013  m_context.m_lastCursorHoveredPoint.x(), yAxis->range().lower);
1014  }
1015 
1016  // qDebug();
1017  replot();
1018  }
1019 
1020 
1021  return;
1022 }
1023 
1024 
1025 void
1027 {
1028  //qDebug();
1030 
1031  // Now store the mouse position data into the the current drag point
1032  // member datum, that will be used in countless occasions later.
1034  m_context.m_keyboardModifiers = QGuiApplication::queryKeyboardModifiers();
1035 
1036  // When we drag (either keyboard or mouse), we hide the position markers
1037  // (black) and we show the start and end vertical markers for the region.
1038  // Then, we draw the horizontal region range marker that delimits
1039  // horizontally the dragged-over region.
1040 
1041  if(mp_hPosTracerItem != nullptr)
1042  mp_hPosTracerItem->setVisible(false);
1043  if(mp_vPosTracerItem != nullptr)
1044  mp_vPosTracerItem->setVisible(false);
1045 
1046  // Only bother with the tracers if the user wants them to be visible.
1047  if(m_shouldTracersBeVisible && (mp_vEndTracerItem != nullptr))
1048  {
1049 
1050  // The vertical end tracer position must be refreshed.
1051  mp_vEndTracerItem->start->setCoords(m_context.m_currentDragPoint.x(),
1052  yAxis->range().upper);
1053 
1054  mp_vEndTracerItem->end->setCoords(m_context.m_currentDragPoint.x(),
1055  yAxis->range().lower);
1056 
1057  mp_vEndTracerItem->setVisible(true);
1058  }
1059 
1060  // Whatever the button, when we are dealing with the axes, we do not
1061  // want to show any of the tracers.
1062 
1064  {
1065  if(mp_hPosTracerItem != nullptr)
1066  mp_hPosTracerItem->setVisible(false);
1067  if(mp_vPosTracerItem != nullptr)
1068  mp_vPosTracerItem->setVisible(false);
1069 
1070  if(mp_vStartTracerItem != nullptr)
1071  mp_vStartTracerItem->setVisible(false);
1072  if(mp_vEndTracerItem != nullptr)
1073  mp_vEndTracerItem->setVisible(false);
1074  }
1075  else
1076  {
1077  // Since we are not dragging the mouse cursor over the axes, make sure
1078  // we store the drag directions in the context, as this might be
1079  // useful for later operations.
1080 
1082 
1083  // qDebug() << m_context.toString();
1084  }
1085 
1086  // Because when we drag the mouse button (whatever the button) we need to
1087  // know what is the drag delta (distance between start point and current
1088  // point of the drag operation) on both axes, ask that these x|y deltas be
1089  // computed.
1091 
1092  // Now deal with the BUTTON-SPECIFIC CODE.
1093 
1094  if(m_context.m_mouseButtonsAtMousePress & Qt::LeftButton)
1095  {
1097  }
1098  else if(m_context.m_mouseButtonsAtMousePress & Qt::RightButton)
1099  {
1101  }
1102 
1103 }
1104 
1105 
1106 void
1108 {
1109  //qDebug() << "The left button is dragging.";
1110 
1111  // Set the context.m_isMeasuringDistance to false, which later might be set to
1112  // true if effectively we are measuring a distance. This is required because
1113  // the derived widget classes might want to know if they have to perform
1114  // some action on the basis that context is measuring a distance, for
1115  // example the mass spectrum-specific widget might want to compute
1116  // deconvolutions.
1117 
1119 
1120  // Let's first check if the mouse drag operation originated on either
1121  // axis. In that case, the user is performing axis reframing or rescaling.
1122 
1124  {
1125  //qDebug() << "Click was on one of the axes.";
1126 
1127  if(m_context.m_keyboardModifiers & Qt::ControlModifier)
1128  {
1129  // The user is asking a rescale of the plot.
1130 
1131  // We know that we do not want the tracers when we perform axis
1132  // rescaling operations.
1133 
1134  if(mp_hPosTracerItem != nullptr)
1135  mp_hPosTracerItem->setVisible(false);
1136  if(mp_vPosTracerItem != nullptr)
1137  mp_vPosTracerItem->setVisible(false);
1138 
1139  if(mp_vStartTracerItem != nullptr)
1140  mp_vStartTracerItem->setVisible(false);
1141  if(mp_vEndTracerItem != nullptr)
1142  mp_vEndTracerItem->setVisible(false);
1143 
1144  // This operation is particularly intensive, thus we want to
1145  // reduce the number of calculations by skipping this calculation
1146  // a number of times. The user can ask for this feature by
1147  // clicking the 'Q' letter.
1148 
1149  if(m_context.m_pressedKeyCode == Qt::Key_Q)
1150  {
1152  {
1154  return;
1155  }
1156  else
1157  {
1159  }
1160  }
1161 
1162  //qDebug() << "Asking that the axes be rescaled.";
1163 
1164  axisRescale();
1165  }
1166  else
1167  {
1168  // The user was simply dragging the axis. Just pan, that is slide
1169  // the plot in the same direction as the mouse movement and with the
1170  // same amplitude.
1171 
1172  //qDebug() << "Asking that the axes be panned.";
1173 
1174  axisPan();
1175  }
1176 
1177  return;
1178  }
1179 
1180  // At this point we understand that the user was not performing any
1181  // panning/rescaling operation by clicking on any one of the axes.. Go on
1182  // with other possibilities.
1183 
1184  // Let's check if the user is actually drawing a rectangle (covering a
1185  // real area) or is drawing a line.
1186 
1187  // qDebug() << "The mouse dragging did not originate on an axis.";
1188 
1190  {
1191  //qDebug() << "Apparently the selection is a real rectangle.";
1192 
1193  // When we draw a rectangle the tracers are of no use.
1194 
1195  if(mp_hPosTracerItem != nullptr)
1196  mp_hPosTracerItem->setVisible(false);
1197  if(mp_vPosTracerItem != nullptr)
1198  mp_vPosTracerItem->setVisible(false);
1199 
1200  if(mp_vStartTracerItem != nullptr)
1201  mp_vStartTracerItem->setVisible(false);
1202  if(mp_vEndTracerItem != nullptr)
1203  mp_vEndTracerItem->setVisible(false);
1204 
1205  // Draw the rectangle, false, not as line segment and
1206  // false, not for integration
1208 
1209  // Draw the selection width/height text
1212 
1213  // qDebug() << "The selection polygon:"
1214  //<< m_context.m_selectionPolygon.toString();
1215  }
1216  else
1217  {
1218  //qDebug() << "Apparently we are measuring a delta.";
1219 
1220  // Draw the rectangle, true, as line segment and
1221  // false, not for integration
1223 
1224  // qDebug() << "The selection polygon:"
1225  //<< m_context.m_selectionPolygon.toString();
1226 
1227  // The pure position tracers should be hidden.
1228  if(mp_hPosTracerItem != nullptr)
1229  mp_hPosTracerItem->setVisible(true);
1230  if(mp_vPosTracerItem != nullptr)
1231  mp_vPosTracerItem->setVisible(true);
1232 
1233  // Then, make sure the region range vertical tracers are visible.
1234  if(mp_vStartTracerItem != nullptr)
1235  mp_vStartTracerItem->setVisible(true);
1236  if(mp_vEndTracerItem != nullptr)
1237  mp_vEndTracerItem->setVisible(true);
1238 
1239  // Draw the selection width text
1241  }
1242 }
1243 
1244 
1245 void
1247 {
1248  //qDebug() << "The right button is dragging.";
1249 
1250  // Set the context.m_isMeasuringDistance to false, which later might be set to
1251  // true if effectively we are measuring a distance. This is required because
1252  // the derived widgets might want to know if they have to perform some
1253  // action on the basis that context is measuring a distance, for example the
1254  // mass spectrum-specific widget might want to compute deconvolutions.
1255 
1257 
1259  {
1260  // qDebug() << "Apparently the selection is a real rectangle.";
1261 
1262  // When we draw a rectangle the tracers are of no use.
1263 
1264  if(mp_hPosTracerItem != nullptr)
1265  mp_hPosTracerItem->setVisible(false);
1266  if(mp_vPosTracerItem != nullptr)
1267  mp_vPosTracerItem->setVisible(false);
1268 
1269  if(mp_vStartTracerItem != nullptr)
1270  mp_vStartTracerItem->setVisible(false);
1271  if(mp_vEndTracerItem != nullptr)
1272  mp_vEndTracerItem->setVisible(false);
1273 
1274  // Draw the rectangle, false for as_line_segment and true, for
1275  // integration.
1277 
1278  // Draw the selection width/height text
1281  }
1282  else
1283  {
1284  // qDebug() << "Apparently the selection is a not a rectangle.";
1285 
1286  // Draw the rectangle, true, as line segment and
1287  // false, true for integration
1289 
1290  // Draw the selection width text
1292  }
1293 
1294  // Draw the selection width text
1296 }
1297 
1298 
1299 void
1301 {
1302  // When the user clicks this widget it has to take focus.
1303  setFocus();
1304 
1305  // Fix from Qt5 to Qt6
1306  // QPointF mousePoint = event->localPos();
1307 
1308 #if QT_VERSION < 0x060000
1309  QPointF mousePoint = event->localPos();
1310 #else
1311  QPointF mousePoint = event->position();
1312 #endif
1313 
1314  m_context.m_lastPressedMouseButton = event->button();
1315  m_context.m_mouseButtonsAtMousePress = event->buttons();
1316 
1317  // The pressedMouseButtons must continually inform on the status of
1318  // pressed buttons so add the pressed button.
1319  m_context.m_pressedMouseButtons |= event->button();
1320 
1321  //qDebug().noquote() << m_context.toString();
1322 
1323  // In all the processing of the events, we need to know if the user is
1324  // clicking somewhere with the intent to change the plot ranges (reframing
1325  // or rescaling the plot).
1326  //
1327  // Reframing the plot means that the new x and y axes ranges are modified
1328  // so that they match the region that the user has encompassed by left
1329  // clicking the mouse and dragging it over the plot. That is we reframe
1330  // the plot so that it contains only the "selected" region.
1331  //
1332  // Rescaling the plot means the the new x|y axis range is modified such
1333  // that the lower axis range is constant and the upper axis range is moved
1334  // either left or right by the same amont as the x|y delta encompassed by
1335  // the user moving the mouse. The axis is thus either compressed (mouse
1336  // movement is leftwards) or un-compressed (mouse movement is rightwards).
1337 
1338  // There are two ways to perform axis range modifications:
1339  //
1340  // 1. By clicking on any of the axes
1341  // 2. By clicking on the plot region but using keyboard key modifiers,
1342  // like Alt and Ctrl.
1343  //
1344  // We need to know both cases separately which is why we need to perform a
1345  // number of tests below.
1346 
1347  // Let's check if the click is on the axes, either X or Y, because that
1348  // will allow us to take proper actions.
1349 
1350  if(isClickOntoXAxis(mousePoint))
1351  {
1352  // The X axis was clicked upon, we need to document that:
1353  // qDebug() << __FILE__ << __LINE__
1354  //<< "Layout element is axisRect and actually on an X axis part.";
1355 
1357 
1358  // int currentInteractions = interactions();
1359  // currentInteractions |= QCP::iRangeDrag;
1360  // setInteractions((QCP::Interaction)currentInteractions);
1361  // axisRect()->setRangeDrag(xAxis->orientation());
1362  }
1363  else
1364  m_context.m_wasClickOnXAxis = false;
1365 
1366  if(isClickOntoYAxis(mousePoint))
1367  {
1368  // The Y axis was clicked upon, we need to document that:
1369  // qDebug() << __FILE__ << __LINE__
1370  //<< "Layout element is axisRect and actually on an Y axis part.";
1371 
1373 
1374  // int currentInteractions = interactions();
1375  // currentInteractions |= QCP::iRangeDrag;
1376  // setInteractions((QCP::Interaction)currentInteractions);
1377  // axisRect()->setRangeDrag(yAxis->orientation());
1378  }
1379  else
1380  m_context.m_wasClickOnYAxis = false;
1381 
1382  // At this point, let's see if we need to remove the QCP::iRangeDrag bit:
1383 
1385  {
1386  // qDebug() << __FILE__ << __LINE__
1387  // << "Click outside of axes.";
1388 
1389  // int currentInteractions = interactions();
1390  // currentInteractions = currentInteractions & ~QCP::iRangeDrag;
1391  // setInteractions((QCP::Interaction)currentInteractions);
1392  }
1393 
1394  m_context.m_startDragPoint.setX(xAxis->pixelToCoord(mousePoint.x()));
1395  m_context.m_startDragPoint.setY(yAxis->pixelToCoord(mousePoint.y()));
1396 
1397  // Now install the vertical start tracer at the last cursor hovered
1398  // position.
1399  if((m_shouldTracersBeVisible) && (mp_vStartTracerItem != nullptr))
1400  mp_vStartTracerItem->setVisible(true);
1401 
1402  if(mp_vStartTracerItem != nullptr)
1403  {
1404  mp_vStartTracerItem->start->setCoords(
1405  m_context.m_lastCursorHoveredPoint.x(), yAxis->range().upper);
1406  mp_vStartTracerItem->end->setCoords(
1407  m_context.m_lastCursorHoveredPoint.x(), yAxis->range().lower);
1408  }
1409 
1410  replot();
1411 }
1412 
1413 
1414 void
1416 {
1417  // Now the real code of this function.
1418 
1419  m_context.m_lastReleasedMouseButton = event->button();
1420 
1421  // The event->buttons() is the description of the buttons that are pressed at
1422  // the moment the handler is invoked, that is now. If left and right were
1423  // pressed, and left was released, event->buttons() would be right.
1424  m_context.m_mouseButtonsAtMouseRelease = event->buttons();
1425 
1426  // The pressedMouseButtons must continually inform on the status of pressed
1427  // buttons so remove the released button.
1428  m_context.m_pressedMouseButtons ^= event->button();
1429 
1430  // qDebug().noquote() << m_context.toString();
1431 
1432  // We'll need to know if modifiers were pressed a the moment the user
1433  // released the mouse button.
1434  m_context.m_keyboardModifiers = QGuiApplication::keyboardModifiers();
1435 
1437  {
1438  // Let the user know that the mouse was *not* being dragged.
1439  m_context.m_wasMouseDragging = false;
1440 
1441  event->accept();
1442 
1443  return;
1444  }
1445 
1446  // Let the user know that the mouse was being dragged.
1448 
1449  // We cannot hide all items in one go because we rely on their visibility
1450  // to know what kind of dragging operation we need to perform (line-only
1451  // X-based zoom or rectangle-based X- and Y-based zoom, for example). The
1452  // only thing we know is that we can make the text invisible.
1453 
1454  // Same for the x delta text item
1455  mp_xDeltaTextItem->setVisible(false);
1456  mp_yDeltaTextItem->setVisible(false);
1457 
1458  // We do not show the end vertical region range marker.
1459  mp_vEndTracerItem->setVisible(false);
1460 
1461  // Horizontal position tracer.
1462  mp_hPosTracerItem->setVisible(true);
1463  mp_hPosTracerItem->start->setCoords(xAxis->range().lower,
1465  mp_hPosTracerItem->end->setCoords(xAxis->range().upper,
1467 
1468  // Vertical position tracer.
1469  mp_vPosTracerItem->setVisible(true);
1470 
1471  mp_vPosTracerItem->setVisible(true);
1473  yAxis->range().upper);
1475  yAxis->range().lower);
1476 
1477  // Force replot now because later that call might not be performed.
1478  replot();
1479 
1480  // If we were using the "quantum" display for the rescale of the axes
1481  // using the Ctrl-modified left button click drag in the axes, then reset
1482  // the count to 0.
1484 
1485  // Now that we have computed the useful ranges, we need to check what to do
1486  // depending on the button that was pressed.
1487 
1488  if(m_context.m_lastReleasedMouseButton == Qt::LeftButton)
1489  {
1491  }
1492  else if(m_context.m_lastReleasedMouseButton == Qt::RightButton)
1493  {
1495  }
1496 
1497  // By definition we are stopping the drag operation by releasing the mouse
1498  // button. Whatever that mouse button was pressed before and if there was
1499  // one pressed before. We cannot set that boolean value to false before
1500  // this place, because we call a number of routines above that need to know
1501  // that dragging was occurring. Like mouseReleaseHandledEvent(event) for
1502  // example.
1503 
1504  m_context.m_isMouseDragging = false;
1505 
1506  event->accept();
1507 
1508  return;
1509 }
1510 
1511 
1512 void
1514 {
1515 
1517  {
1518 
1519  // When the mouse move handler pans the plot, we cannot store each axes
1520  // range history element that would mean store a huge amount of such
1521  // elements, as many element as there are mouse move event handled by
1522  // the Qt event queue. But we can store an axis range history element
1523  // for the last situation of the mouse move: when the button is
1524  // released:
1525 
1527 
1529 
1530  replot();
1531 
1532  // Nothing else to do.
1533  return;
1534  }
1535 
1536  // There are two possibilities:
1537  //
1538  // 1. The full selection polygon (four lines) were currently drawn, which
1539  // means the user was willing to perform a zoom operation
1540  //
1541  // 2. Only the first top line was drawn, which means the user was dragging
1542  // the cursor horizontally. That might have two ends, as shown below.
1543 
1544  // So, first check what is drawn of the selection polygon.
1545 
1546  PolygonType current_selection_polygon_type =
1548 
1549  // Now that we know what was currently drawn of the selection polygon, we can
1550  // remove it. true to reset the values to 0.
1551  hideSelectionRectangle(true);
1552 
1553  // Force replot now because later that call might not be performed.
1554  replot();
1555 
1556  if(current_selection_polygon_type == PolygonType::FULL_POLYGON)
1557  {
1558  // qDebug() << "Yes, the full polygon was visible";
1559 
1560  // If we were dragging with the left button pressed and could draw a
1561  // rectangle, then we were preparing a zoom operation. Let's bring that
1562  // operation to its accomplishment.
1563 
1564  axisZoom();
1565 
1566  // qDebug() << "The selection polygon:"
1567  //<< m_context.m_selectionPolygon.toString();
1568 
1569  return;
1570  }
1571  else if(current_selection_polygon_type == PolygonType::TOP_LINE)
1572  {
1573  // qDebug() << "No, only the top line of the full polygon was visible";
1574 
1575  // The user was dragging the left mouse cursor and that may mean they were
1576  // measuring a distance or willing to perform a special zoom operation if
1577  // the Ctrl key was down.
1578 
1579  // If the user started by clicking in the plot region, dragged the mouse
1580  // cursor with the left button and pressed the Ctrl modifier, then that
1581  // means that they wanted to do a rescale over the x-axis in the form of a
1582  // reframing.
1583 
1584  if(m_context.m_keyboardModifiers & Qt::ControlModifier)
1585  {
1586  return axisReframe();
1587 
1588  // qDebug() << "The selection polygon:"
1589  //<< m_context.m_selectionPolygon.toString();
1590  }
1591  }
1592  // else
1593  // qDebug() << "Another possibility.";
1594 }
1595 
1596 
1597 void
1599 {
1600  //qDebug();
1601  // The right button is used for the integrations. Not for axis range
1602  // operations. So all we have to do is remove the various graphics items and
1603  // send a signal with the context that contains all the data required by the
1604  // user to perform the integrations over the right plot regions.
1605 
1606  // Whatever we were doing we need to make the selection line invisible:
1607 
1608  if(mp_xDeltaTextItem->visible())
1609  mp_xDeltaTextItem->setVisible(false);
1610  if(mp_yDeltaTextItem->visible())
1611  mp_yDeltaTextItem->setVisible(false);
1612 
1613  // Also make the vertical end tracer invisible.
1614  mp_vEndTracerItem->setVisible(false);
1615 
1616  // Once the integration is asked for, then the selection rectangle if of no
1617  // more use.
1619 
1620  // Force replot now because later that call might not be performed.
1621  replot();
1622 
1623  // Note that we only request an integration if the x-axis delta is enough.
1624 
1625  double x_delta_pixel =
1626  fabs(xAxis->coordToPixel(m_context.m_currentDragPoint.x()) -
1627  xAxis->coordToPixel(m_context.m_startDragPoint.x()));
1628 
1629  if(x_delta_pixel > 3)
1631  // else
1632  //qDebug() << "Not asking for integration.";
1633 }
1634 
1635 
1636 void
1637 BasePlotWidget::mouseWheelHandler([[maybe_unused]] QWheelEvent *event)
1638 {
1639  // We should record the new range values each time the wheel is used to
1640  // zoom/unzoom.
1641 
1642  m_context.m_xRange = QCPRange(xAxis->range());
1643  m_context.m_yRange = QCPRange(yAxis->range());
1644 
1645  // qDebug() << "New x range: " << m_context.m_xRange;
1646  // qDebug() << "New y range: " << m_context.m_yRange;
1647 
1649 
1652 
1653  event->accept();
1654 }
1655 
1656 
1657 void
1659  QCPAxis *axis,
1660  [[maybe_unused]] QCPAxis::SelectablePart part,
1661  QMouseEvent *event)
1662 {
1663  // qDebug();
1664 
1665  m_context.m_keyboardModifiers = QGuiApplication::queryKeyboardModifiers();
1666 
1667  if(m_context.m_keyboardModifiers & Qt::ControlModifier)
1668  {
1669  // qDebug();
1670 
1671  // If the Ctrl modifiers is active, then both axes are to be reset. Also
1672  // the histories are reset also.
1673 
1674  rescaleAxes();
1676  }
1677  else
1678  {
1679  // qDebug();
1680 
1681  // Only the axis passed as parameter is to be rescaled.
1682  // Reset the range of that axis to the max view possible.
1683 
1684  axis->rescale();
1685 
1687 
1688  event->accept();
1689  }
1690 
1691  // The double-click event does not cancel the mouse press event. That is, if
1692  // left-double-clicking, at the end of the operation the button still
1693  // "pressed". We need to remove manually the button from the pressed buttons
1694  // context member.
1695 
1696  m_context.m_pressedMouseButtons ^= event->button();
1697 
1699 
1701 
1702  replot();
1703 }
1704 
1705 
1706 bool
1707 BasePlotWidget::isClickOntoXAxis(const QPointF &mousePoint)
1708 {
1709  QCPLayoutElement *layoutElement = layoutElementAt(mousePoint);
1710 
1711  if(layoutElement &&
1712  layoutElement == dynamic_cast<QCPLayoutElement *>(axisRect()))
1713  {
1714  // The graph is *inside* the axisRect that is the outermost envelope of
1715  // the graph. Thus, if we want to know if the click was indeed on an
1716  // axis, we need to check what selectable part of the the axisRect we
1717  // were
1718  // clicking:
1719  QCPAxis::SelectablePart selectablePart;
1720 
1721  selectablePart = xAxis->getPartAt(mousePoint);
1722 
1723  if(selectablePart == QCPAxis::spAxisLabel ||
1724  selectablePart == QCPAxis::spAxis ||
1725  selectablePart == QCPAxis::spTickLabels)
1726  return true;
1727  }
1728 
1729  return false;
1730 }
1731 
1732 
1733 bool
1734 BasePlotWidget::isClickOntoYAxis(const QPointF &mousePoint)
1735 {
1736  QCPLayoutElement *layoutElement = layoutElementAt(mousePoint);
1737 
1738  if(layoutElement &&
1739  layoutElement == dynamic_cast<QCPLayoutElement *>(axisRect()))
1740  {
1741  // The graph is *inside* the axisRect that is the outermost envelope of
1742  // the graph. Thus, if we want to know if the click was indeed on an
1743  // axis, we need to check what selectable part of the the axisRect we
1744  // were
1745  // clicking:
1746  QCPAxis::SelectablePart selectablePart;
1747 
1748  selectablePart = yAxis->getPartAt(mousePoint);
1749 
1750  if(selectablePart == QCPAxis::spAxisLabel ||
1751  selectablePart == QCPAxis::spAxis ||
1752  selectablePart == QCPAxis::spTickLabels)
1753  return true;
1754  }
1755 
1756  return false;
1757 }
1758 
1759 /// MOUSE-related EVENTS
1760 
1761 
1762 /// MOUSE MOVEMENTS mouse/keyboard-triggered
1763 
1764 int
1766 {
1767  // The user is dragging the mouse, probably to rescale the axes, but we need
1768  // to sort out in which direction the drag is happening.
1769 
1770  // This function should be called after calculateDragDeltas, so that
1771  // m_context has the proper x/y delta values that we'll compare.
1772 
1773  // Note that we cannot compare simply x or y deltas because the y axis might
1774  // have a different scale that the x axis. So we first need to convert the
1775  // positions to pixels.
1776 
1777  double x_delta_pixel =
1778  fabs(xAxis->coordToPixel(m_context.m_currentDragPoint.x()) -
1779  xAxis->coordToPixel(m_context.m_startDragPoint.x()));
1780 
1781  double y_delta_pixel =
1782  fabs(yAxis->coordToPixel(m_context.m_currentDragPoint.y()) -
1783  yAxis->coordToPixel(m_context.m_startDragPoint.y()));
1784 
1785  if(x_delta_pixel > y_delta_pixel)
1786  return Qt::Horizontal;
1787 
1788  return Qt::Vertical;
1789 }
1790 
1791 
1792 void
1794 {
1795  // First convert the graph coordinates to pixel coordinates.
1796 
1797  QPointF pixels_coordinates(xAxis->coordToPixel(graph_coordinates.x()),
1798  yAxis->coordToPixel(graph_coordinates.y()));
1799 
1800  moveMouseCursorPixelCoordToGlobal(pixels_coordinates.toPoint());
1801 }
1802 
1803 
1804 void
1806 {
1807  // qDebug() << "Calling set pos with new cursor position.";
1808  QCursor::setPos(mapToGlobal(pixel_coordinates.toPoint()));
1809 }
1810 
1811 
1812 void
1814 {
1815  QPointF graph_coord = horizontalGetGraphCoordNewPointCountPixels(pixel_count);
1816 
1817  QPointF pixel_coord(xAxis->coordToPixel(graph_coord.x()),
1818  yAxis->coordToPixel(graph_coord.y()));
1819 
1820  // Now we need ton convert the new coordinates to the global position system
1821  // and to move the cursor to that new position. That will create an event to
1822  // move the mouse cursor.
1823 
1824  moveMouseCursorPixelCoordToGlobal(pixel_coord.toPoint());
1825 }
1826 
1827 
1828 QPointF
1830 {
1831  QPointF pixel_coordinates(
1832  xAxis->coordToPixel(m_context.m_lastCursorHoveredPoint.x()) + pixel_count,
1833  yAxis->coordToPixel(m_context.m_lastCursorHoveredPoint.y()));
1834 
1835  // Now convert back to local coordinates.
1836 
1837  QPointF graph_coordinates(xAxis->pixelToCoord(pixel_coordinates.x()),
1838  yAxis->pixelToCoord(pixel_coordinates.y()));
1839 
1840  return graph_coordinates;
1841 }
1842 
1843 
1844 void
1846 {
1847 
1848  QPointF graph_coord = verticalGetGraphCoordNewPointCountPixels(pixel_count);
1849 
1850  QPointF pixel_coord(xAxis->coordToPixel(graph_coord.x()),
1851  yAxis->coordToPixel(graph_coord.y()));
1852 
1853  // Now we need ton convert the new coordinates to the global position system
1854  // and to move the cursor to that new position. That will create an event to
1855  // move the mouse cursor.
1856 
1857  moveMouseCursorPixelCoordToGlobal(pixel_coord.toPoint());
1858 }
1859 
1860 
1861 QPointF
1863 {
1864  QPointF pixel_coordinates(
1865  xAxis->coordToPixel(m_context.m_lastCursorHoveredPoint.x()),
1866  yAxis->coordToPixel(m_context.m_lastCursorHoveredPoint.y()) + pixel_count);
1867 
1868  // Now convert back to local coordinates.
1869 
1870  QPointF graph_coordinates(xAxis->pixelToCoord(pixel_coordinates.x()),
1871  yAxis->pixelToCoord(pixel_coordinates.y()));
1872 
1873  return graph_coordinates;
1874 }
1875 
1876 /// MOUSE MOVEMENTS mouse/keyboard-triggered
1877 
1878 
1879 /// RANGE-related functions
1880 
1881 QCPRange
1882 BasePlotWidget::getRangeX(bool &found_range, int index) const
1883 {
1884  QCPGraph *graph_p = graph(index);
1885 
1886  if(graph_p == nullptr)
1887  qFatal("Programming error.");
1888 
1889  return graph_p->getKeyRange(found_range);
1890 }
1891 
1892 
1893 QCPRange
1894 BasePlotWidget::getRangeY(bool &found_range, int index) const
1895 {
1896  QCPGraph *graph_p = graph(index);
1897 
1898  if(graph_p == nullptr)
1899  qFatal("Programming error.");
1900 
1901  return graph_p->getValueRange(found_range);
1902 }
1903 
1904 
1905 QCPRange
1907  RangeType range_type,
1908  bool &found_range) const
1909 {
1910 
1911  // Iterate in all the graphs in this widget and return a QCPRange that has
1912  // its lower member as the greatest lower value of all
1913  // its upper member as the smallest upper value of all
1914 
1915  if(!graphCount())
1916  {
1917  found_range = false;
1918 
1919  return QCPRange(0, 1);
1920  }
1921 
1922  if(graphCount() == 1)
1923  return graph()->getKeyRange(found_range);
1924 
1925  bool found_at_least_one_range = false;
1926 
1927  // Create an invalid range.
1928  QCPRange result_range(QCPRange::minRange + 1, QCPRange::maxRange + 1);
1929 
1930  for(int iter = 0; iter < graphCount(); ++iter)
1931  {
1932  QCPRange temp_range;
1933 
1934  bool found_range_for_iter = false;
1935 
1936  QCPGraph *graph_p = graph(iter);
1937 
1938  // Depending on the axis param, select the key or value range.
1939 
1940  if(axis == Axis::x)
1941  temp_range = graph_p->getKeyRange(found_range_for_iter);
1942  else if(axis == Axis::y)
1943  temp_range = graph_p->getValueRange(found_range_for_iter);
1944  else
1945  qFatal("Cannot reach this point. Programming error.");
1946 
1947  // Was a range found for the iterated graph ? If not skip this
1948  // iteration.
1949 
1950  if(!found_range_for_iter)
1951  continue;
1952 
1953  // While the innermost_range is invalid, we need to seed it with a good
1954  // one. So check this.
1955 
1956  if(!QCPRange::validRange(result_range))
1957  qFatal("The obtained range is invalid !");
1958 
1959  // At this point we know the obtained range is OK.
1960  result_range = temp_range;
1961 
1962  // We found at least one valid range!
1963  found_at_least_one_range = true;
1964 
1965  // At this point we have two valid ranges to compare. Depending on
1966  // range_type, we need to perform distinct comparisons.
1967 
1968  if(range_type == RangeType::innermost)
1969  {
1970  if(temp_range.lower > result_range.lower)
1971  result_range.lower = temp_range.lower;
1972  if(temp_range.upper < result_range.upper)
1973  result_range.upper = temp_range.upper;
1974  }
1975  else if(range_type == RangeType::outermost)
1976  {
1977  if(temp_range.lower < result_range.lower)
1978  result_range.lower = temp_range.lower;
1979  if(temp_range.upper > result_range.upper)
1980  result_range.upper = temp_range.upper;
1981  }
1982  else
1983  qFatal("Cannot reach this point. Programming error.");
1984 
1985  // Continue to next graph, if any.
1986  }
1987  // End of
1988  // for(int iter = 0; iter < graphCount(); ++iter)
1989 
1990  // Let the caller know if we found at least one range.
1991  found_range = found_at_least_one_range;
1992 
1993  return result_range;
1994 }
1995 
1996 
1997 QCPRange
1998 BasePlotWidget::getInnermostRangeX(bool &found_range) const
1999 {
2000 
2001  return getRange(Axis::x, RangeType::innermost, found_range);
2002 }
2003 
2004 
2005 QCPRange
2006 BasePlotWidget::getOutermostRangeX(bool &found_range) const
2007 {
2008  return getRange(Axis::x, RangeType::outermost, found_range);
2009 }
2010 
2011 
2012 QCPRange
2013 BasePlotWidget::getInnermostRangeY(bool &found_range) const
2014 {
2015 
2016  return getRange(Axis::y, RangeType::innermost, found_range);
2017 }
2018 
2019 
2020 QCPRange
2021 BasePlotWidget::getOutermostRangeY(bool &found_range) const
2022 {
2023  return getRange(Axis::y, RangeType::outermost, found_range);
2024 }
2025 
2026 
2027 /// RANGE-related functions
2028 
2029 
2030 /// PLOTTING / REPLOTTING functions
2031 
2032 void
2034 {
2035  // Get the current x lower/upper range, that is, leftmost/rightmost x
2036  // coordinate.
2037  double xLower = xAxis->range().lower;
2038  double xUpper = xAxis->range().upper;
2039 
2040  // Get the current y lower/upper range, that is, bottommost/topmost y
2041  // coordinate.
2042  double yLower = yAxis->range().lower;
2043  double yUpper = yAxis->range().upper;
2044 
2045  // This function is called only when the user has clicked on the x/y axis or
2046  // when the user has dragged the left mouse button with the Ctrl key
2047  // modifier. The m_context.m_wasClickOnXAxis is then simulated in the mouse
2048  // move handler. So we need to test which axis was clicked-on.
2049 
2051  {
2052 
2053  // We are changing the range of the X axis.
2054 
2055  // What is the x delta ?
2056  double xDelta =
2058 
2059  // If xDelta is < 0, the we were dragging from right to left, we are
2060  // compressing the view on the x axis, by adding new data to the right
2061  // hand size of the graph. So we add xDelta to the upper bound of the
2062  // range. Otherwise we are uncompressing the view on the x axis and
2063  // remove the xDelta from the upper bound of the range. This is why we
2064  // have the
2065  // '-'
2066  // and not '+' below;
2067 
2068  // qDebug() << "Setting xaxis:" << xLower << "--" << xUpper - xDelta;
2069 
2070  xAxis->setRange(xLower, xUpper - xDelta);
2071  }
2072  // End of
2073  // if(m_context.m_wasClickOnXAxis)
2074  else // that is, if(m_context.m_wasClickOnYAxis)
2075  {
2076  // We are changing the range of the Y axis.
2077 
2078  // What is the y delta ?
2079  double yDelta =
2081 
2082  // See above for an explanation of the computation.
2083 
2084  yAxis->setRange(yLower, yUpper - yDelta);
2085 
2086  // Old version
2087  // if(yDelta < 0)
2088  //{
2089  //// The dragging operation was from top to bottom, we are enlarging
2090  //// the range (thus, we are unzooming the view, since the widget
2091  //// always has the same size).
2092 
2093  // yAxis->setRange(yLower, yUpper + fabs(yDelta));
2094  //}
2095  // else
2096  //{
2097  //// The dragging operation was from bottom to top, we are reducing
2098  //// the range (thus, we are zooming the view, since the widget
2099  //// always has the same size).
2100 
2101  // yAxis->setRange(yLower, yUpper - fabs(yDelta));
2102  //}
2103  }
2104  // End of
2105  // else // that is, if(m_context.m_wasClickOnYAxis)
2106 
2107  // Update the context with the current axes ranges
2108 
2110 
2112 
2113  replot();
2114 }
2115 
2116 
2117 void
2119 {
2120 
2121  // double sorted_start_drag_point_x =
2122  // std::min(m_context.m_startDragPoint.x(), m_context.m_currentDragPoint.x());
2123 
2124  // xAxis->setRange(sorted_start_drag_point_x,
2125  // sorted_start_drag_point_x + fabs(m_context.m_xDelta));
2126 
2127  xAxis->setRange(
2129 
2130  // Note that the y axis should be rescaled from current lower value to new
2131  // upper value matching the y-axis position of the cursor when the mouse
2132  // button was released.
2133 
2134  yAxis->setRange(xAxis->range().lower,
2135  std::max<double>(m_context.m_yRegionRangeStart,
2137 
2138  // qDebug() << "xaxis:" << xAxis->range().lower << "-" <<
2139  // xAxis->range().upper
2140  //<< "yaxis:" << yAxis->range().lower << "-" << yAxis->range().upper;
2141 
2143 
2146 
2147  replot();
2148 }
2149 
2150 
2151 void
2153 {
2154 
2155  // Use the m_context.m_xRegionRangeStart/End values, but we need to sort the
2156  // values before using them, because now we want to really have the lower x
2157  // value. Simply craft a QCPRange that will swap the values if lower is not
2158  // < than upper QCustomPlot calls this normalization).
2159 
2160  xAxis->setRange(
2162 
2163  yAxis->setRange(
2165 
2167 
2170 
2171  replot();
2172 }
2173 
2174 
2175 void
2177 {
2178  // Sanity check
2180  qFatal(
2181  "This function can only be called if the mouse click was on one of the "
2182  "axes");
2183 
2185  {
2186  xAxis->setRange(m_context.m_xRange.lower - m_context.m_xDelta,
2188  }
2189 
2191  {
2192  yAxis->setRange(m_context.m_yRange.lower - m_context.m_yDelta,
2194  }
2195 
2197 
2198  // qDebug() << "The updated context:" << m_context.toString();
2199 
2200  // We cannot store the new ranges in the history, because the pan operation
2201  // involved a huge quantity of micro-movements elicited upon each mouse move
2202  // cursor event so we would have a huge history.
2203  // updateAxesRangeHistory();
2204 
2205  // Now that the context has the right range values, we can emit the
2206  // signal that will be used by this plot widget users, typically to
2207  // abide by the x/y range lock required by the user.
2208 
2210 
2211  replot();
2212 }
2213 
2214 
2215 void
2217  QCPRange yAxisRange,
2218  Axis axis)
2219 {
2220  // qDebug() << "With axis:" << (int)axis;
2221 
2222  if(static_cast<int>(axis) & static_cast<int>(Axis::x))
2223  {
2224  xAxis->setRange(xAxisRange.lower, xAxisRange.upper);
2225  }
2226 
2227  if(static_cast<int>(axis) & static_cast<int>(Axis::y))
2228  {
2229  yAxis->setRange(yAxisRange.lower, yAxisRange.upper);
2230  }
2231 
2232  // We do not want to update the history, because there would be way too
2233  // much history items, since this function is called upon mouse moving
2234  // handling and not only during mouse release events.
2235  // updateAxesRangeHistory();
2236 
2237  replot();
2238 }
2239 
2240 
2241 void
2242 BasePlotWidget::replotWithAxisRangeX(double lower, double upper)
2243 {
2244  // qDebug();
2245 
2246  xAxis->setRange(lower, upper);
2247 
2248  replot();
2249 }
2250 
2251 
2252 void
2253 BasePlotWidget::replotWithAxisRangeY(double lower, double upper)
2254 {
2255  // qDebug();
2256 
2257  yAxis->setRange(lower, upper);
2258 
2259  replot();
2260 }
2261 
2262 /// PLOTTING / REPLOTTING functions
2263 
2264 
2265 /// PLOT ITEMS : TRACER TEXT ITEMS...
2266 
2267 //! Hide the selection line, the xDelta text and the zoom rectangle items.
2268 void
2270 {
2271  mp_xDeltaTextItem->setVisible(false);
2272  mp_yDeltaTextItem->setVisible(false);
2273 
2274  // mp_zoomRectItem->setVisible(false);
2276 
2277  // Force a replot to make sure the action is immediately visible by the
2278  // user, even without moving the mouse.
2279  replot();
2280 }
2281 
2282 
2283 //! Show the traces (vertical and horizontal).
2284 void
2286 {
2287  m_shouldTracersBeVisible = true;
2288 
2289  mp_vPosTracerItem->setVisible(true);
2290  mp_hPosTracerItem->setVisible(true);
2291 
2292  mp_vStartTracerItem->setVisible(true);
2293  mp_vEndTracerItem->setVisible(true);
2294 
2295  // Force a replot to make sure the action is immediately visible by the
2296  // user, even without moving the mouse.
2297  replot();
2298 }
2299 
2300 
2301 //! Hide the traces (vertical and horizontal).
2302 void
2304 {
2305  m_shouldTracersBeVisible = false;
2306  mp_hPosTracerItem->setVisible(false);
2307  mp_vPosTracerItem->setVisible(false);
2308 
2309  mp_vStartTracerItem->setVisible(false);
2310  mp_vEndTracerItem->setVisible(false);
2311 
2312  // Force a replot to make sure the action is immediately visible by the
2313  // user, even without moving the mouse.
2314  replot();
2315 }
2316 
2317 
2318 void
2320  bool for_integration)
2321 {
2322  // The user has dragged the mouse left button on the graph, which means he
2323  // is willing to draw a selection rectangle, either for zooming-in or for
2324  // integration.
2325 
2326  if(mp_xDeltaTextItem != nullptr)
2327  mp_xDeltaTextItem->setVisible(false);
2328  if(mp_yDeltaTextItem != nullptr)
2329  mp_yDeltaTextItem->setVisible(false);
2330 
2331  // Ensure the right selection rectangle is drawn.
2332 
2333  updateSelectionRectangle(as_line_segment, for_integration);
2334 
2335  // Note that if we draw a zoom rectangle, then we are certainly not
2336  // measuring anything. So set the boolean value to false so that the user of
2337  // this widget or derived classes know that there is nothing to perform upon
2338  // (like deconvolution, for example).
2339 
2341 
2342  // Also remove the delta value from the pipeline by sending a simple
2343  // distance without measurement signal.
2344 
2345  emit xAxisMeasurementSignal(m_context, false);
2346 
2347  replot();
2348 }
2349 
2350 
2351 void
2353 {
2354  // The user is dragging the mouse over the graph and we want them to know what
2355  // is the x delta value, that is the span between the point at the start of
2356  // the drag and the current drag position.
2357 
2358  // FIXME: is this still true?
2359  //
2360  // We do not want to show the position markers because the only horiontal
2361  // line to be visible must be contained between the start and end vertiacal
2362  // tracer items.
2363  if(mp_hPosTracerItem != nullptr)
2364  mp_hPosTracerItem->setVisible(false);
2365  if(mp_vPosTracerItem != nullptr)
2366  mp_vPosTracerItem->setVisible(false);
2367 
2368  // We want to draw the text in the middle position of the leftmost-rightmost
2369  // point, even with skewed rectangle selection.
2370 
2371  QPointF leftmost_point = m_context.m_selectionPolygon.getLeftMostPoint();
2372 
2373  // qDebug() << "leftmost_point:" << leftmost_point;
2374 
2375  QPointF rightmost_point = m_context.m_selectionPolygon.getRightMostPoint();
2376 
2377  // qDebug() << "rightmost_point:" << rightmost_point;
2378 
2379  double x_axis_center_position =
2380  leftmost_point.x() + (rightmost_point.x() - leftmost_point.x()) / 2;
2381 
2382  // qDebug() << "x_axis_center_position:" << x_axis_center_position;
2383 
2384  // We want the text to print inside the rectangle, always at the current drag
2385  // point so the eye can follow the delta value while looking where to drag the
2386  // mouse. To position the text inside the rectangle, we need to know what is
2387  // the drag direction.
2388 
2389  // Set aside a point instance to store the pixel coordinates of the text.
2390  QPointF pixel_coordinates;
2391 
2392  // What is the distance between the rectangle line at current drag point and
2393  // the text itself.
2394  int pixels_away_from_line = 15;
2395 
2396  // ATTENTION: the pixel coordinates for the vertical direction go in reverse
2397  // order with respect to the y axis values !!! That is pixel(0,0) is top left
2398  // of the graph.
2399  if(static_cast<int>(m_context.m_dragDirections) &
2400  static_cast<int>(DragDirections::TOP_TO_BOTTOM))
2401  {
2402  // We need to print inside the rectangle, that is pixels_above_line pixels
2403  // to the bottom, so with pixel y value decremented of that
2404  // pixels_above_line value (one would have expected to increment that
2405  // value, along the y axis, but the coordinates in pixel go in reverse
2406  // order).
2407 
2408  pixels_away_from_line *= -1;
2409  }
2410 
2411  double y_axis_pixel_coordinate =
2412  yAxis->coordToPixel(m_context.m_currentDragPoint.y());
2413 
2414  double y_axis_modified_pixel_coordinate =
2415  y_axis_pixel_coordinate + pixels_away_from_line;
2416 
2417  pixel_coordinates.setX(x_axis_center_position);
2418  pixel_coordinates.setY(y_axis_modified_pixel_coordinate);
2419 
2420  // Now convert back to graph coordinates.
2421 
2422  QPointF graph_coordinates(xAxis->pixelToCoord(pixel_coordinates.x()),
2423  yAxis->pixelToCoord(pixel_coordinates.y()));
2424  if(mp_xDeltaTextItem != nullptr)
2425  {
2426  mp_xDeltaTextItem->position->setCoords(x_axis_center_position,
2427  graph_coordinates.y());
2428  mp_xDeltaTextItem->setText(
2429  QString("%1").arg(m_context.m_xDelta, 0, 'f', 3));
2430  mp_xDeltaTextItem->setFont(QFont(font().family(), 9));
2431  mp_xDeltaTextItem->setVisible(true);
2432  }
2433 
2434  // Set the boolean to true so that derived widgets know that something is
2435  // being measured, and they can act accordingly, for example by computing
2436  // deconvolutions in a mass spectrum.
2438 
2439  replot();
2440 
2441  // Let the caller know that we were measuring something.
2442  emit xAxisMeasurementSignal(m_context, true);
2443 
2444  return;
2445 }
2446 
2447 
2448 void
2450 {
2452  return;
2453 
2454  // The user is dragging the mouse over the graph and we want them to know what
2455  // is the y delta value, that is the span between the point at the top of
2456  // the selection polygon and the point at its bottom.
2457 
2458  // FIXME: is this still true?
2459  //
2460  // We do not want to show the position markers because the only horiontal
2461  // line to be visible must be contained between the start and end vertiacal
2462  // tracer items.
2463  mp_hPosTracerItem->setVisible(false);
2464  mp_vPosTracerItem->setVisible(false);
2465 
2466  // We want to draw the text in the middle position of the leftmost-rightmost
2467  // point, even with skewed rectangle selection.
2468 
2469  QPointF leftmost_point = m_context.m_selectionPolygon.getLeftMostPoint();
2470  QPointF topmost_point = m_context.m_selectionPolygon.getTopMostPoint();
2471 
2472  // qDebug() << "leftmost_point:" << leftmost_point;
2473 
2474  QPointF rightmost_point = m_context.m_selectionPolygon.getRightMostPoint();
2475  QPointF bottommost_point = m_context.m_selectionPolygon.getBottomMostPoint();
2476 
2477  // qDebug() << "rightmost_point:" << rightmost_point;
2478 
2479  double x_axis_center_position =
2480  leftmost_point.x() + (rightmost_point.x() - leftmost_point.x()) / 2;
2481 
2482  double y_axis_center_position =
2483  bottommost_point.y() + (topmost_point.y() - bottommost_point.y()) / 2;
2484 
2485  // qDebug() << "x_axis_center_position:" << x_axis_center_position;
2486 
2487  mp_yDeltaTextItem->position->setCoords(x_axis_center_position,
2488  y_axis_center_position);
2489  mp_yDeltaTextItem->setText(QString("%1").arg(m_context.m_yDelta, 0, 'f', 3));
2490  mp_yDeltaTextItem->setFont(QFont(font().family(), 9));
2491  mp_yDeltaTextItem->setVisible(true);
2492  mp_yDeltaTextItem->setRotation(90);
2493 
2494  // Set the boolean to true so that derived widgets know that something is
2495  // being measured, and they can act accordingly, for example by computing
2496  // deconvolutions in a mass spectrum.
2498 
2499  replot();
2500 
2501  // Let the caller know that we were measuring something.
2502  emit xAxisMeasurementSignal(m_context, true);
2503 }
2504 
2505 
2506 void
2508 {
2509 
2510  // We compute signed differentials. If the user does not want the sign,
2511  // fabs(double) is their friend.
2512 
2513  // Compute the xAxis differential:
2514 
2517 
2518  // Same with the Y-axis range:
2519 
2522 
2523  // qDebug() << "xDelta:" << m_context.m_xDelta
2524  //<< "and yDelta:" << m_context.m_yDelta;
2525 
2526  return;
2527 }
2528 
2529 
2530 bool
2532 {
2533  // First get the height of the plot.
2534  double plotHeight = yAxis->range().upper - yAxis->range().lower;
2535 
2536  double heightDiff =
2538 
2539  double heightDiffRatio = (heightDiff / plotHeight) * 100;
2540 
2541  if(heightDiffRatio > 10)
2542  {
2543  // qDebug() << "isVerticalDisplacementAboveThreshold: true";
2544  return true;
2545  }
2546 
2547  // qDebug() << "isVerticalDisplacementAboveThreshold: false";
2548  return false;
2549 }
2550 
2551 
2552 void
2554 {
2555 
2556  // if(for_integration)
2557  // qDebug() << "for_integration:" << for_integration;
2558 
2559  // When we make a linear selection, the selection polygon is a polygon that
2560  // has the following characteristics:
2561  //
2562  // the x range is the linear selection span
2563  //
2564  // the y range is the widest std::min -> std::max possible.
2565 
2566  // This is how the selection polygon logic knows if its is mono-
2567  // two-dimensional.
2568 
2569  // We want the top left point to effectively be the top left point, so check
2570  // the direction of the mouse cursor drag.
2571 
2572  double x_range_start =
2574  double x_range_end =
2576 
2577  double y_position = m_context.m_startDragPoint.y();
2578 
2579  m_context.m_selectionPolygon.set1D(x_range_start, x_range_end);
2580 
2581  // Top line
2582  mp_selectionRectangeLine1->start->setCoords(
2583  QPointF(x_range_start, y_position));
2584  mp_selectionRectangeLine1->end->setCoords(QPointF(x_range_end, y_position));
2585 
2586  // Only if we are drawing a selection rectangle for integration, do we set
2587  // arrow heads to the line.
2588  if(for_integration)
2589  {
2590  mp_selectionRectangeLine1->setHead(QCPLineEnding::esSpikeArrow);
2591  mp_selectionRectangeLine1->setTail(QCPLineEnding::esSpikeArrow);
2592  }
2593  else
2594  {
2595  mp_selectionRectangeLine1->setHead(QCPLineEnding::esNone);
2596  mp_selectionRectangeLine1->setTail(QCPLineEnding::esNone);
2597  }
2598  mp_selectionRectangeLine1->setVisible(true);
2599 
2600  // Right line: does not exist, start and end are the same end point of the top
2601  // line.
2602  mp_selectionRectangeLine2->start->setCoords(QPointF(x_range_end, y_position));
2603  mp_selectionRectangeLine2->end->setCoords(QPointF(x_range_end, y_position));
2604  mp_selectionRectangeLine2->setVisible(false);
2605 
2606  // Bottom line: identical to the top line, but invisible
2607  mp_selectionRectangeLine3->start->setCoords(
2608  QPointF(x_range_start, y_position));
2609  mp_selectionRectangeLine3->end->setCoords(QPointF(x_range_end, y_position));
2610  mp_selectionRectangeLine3->setVisible(false);
2611 
2612  // Left line: does not exist: start and end are the same end point of the top
2613  // line.
2614  mp_selectionRectangeLine4->start->setCoords(QPointF(x_range_end, y_position));
2615  mp_selectionRectangeLine4->end->setCoords(QPointF(x_range_end, y_position));
2616  mp_selectionRectangeLine4->setVisible(false);
2617 }
2618 
2619 
2620 void
2622 {
2623 
2624  // if(for_integration)
2625  // qDebug() << "for_integration:" << for_integration;
2626 
2627  // We are handling a conventional rectangle. Just create four points
2628  // from top left to bottom right. But we want the top left point to be
2629  // effectively the top left point and the bottom point to be the bottom point.
2630  // So we need to try all four direction combinations, left to right or
2631  // converse versus top to bottom or converse.
2632 
2634 
2636  {
2637  // qDebug() << "Dragging from right to left";
2638 
2640  {
2641  // qDebug() << "Dragging from top to bottom";
2642 
2643  // TOP_LEFT_POINT
2648 
2649  // TOP_RIGHT_POINT
2653 
2654  // BOTTOM_RIGHT_POINT
2659 
2660  // BOTTOM_LEFT_POINT
2665  }
2666  // End of
2667  // if(m_context.m_currentDragPoint.y() < m_context.m_startDragPoint.y())
2668  else
2669  {
2670  // qDebug() << "Dragging from bottom to top";
2671 
2672  // TOP_LEFT_POINT
2677 
2678  // TOP_RIGHT_POINT
2683 
2684  // BOTTOM_RIGHT_POINT
2688 
2689  // BOTTOM_LEFT_POINT
2694  }
2695  }
2696  // End of
2697  // if(m_context.m_currentDragPoint.x() < m_context.m_startDragPoint.x())
2698  else
2699  {
2700  // qDebug() << "Dragging from left to right";
2701 
2703  {
2704  // qDebug() << "Dragging from top to bottom";
2705 
2706  // TOP_LEFT_POINT
2710 
2711  // TOP_RIGHT_POINT
2716 
2717  // BOTTOM_RIGHT_POINT
2722 
2723  // BOTTOM_LEFT_POINT
2728  }
2729  else
2730  {
2731  // qDebug() << "Dragging from bottom to top";
2732 
2733  // TOP_LEFT_POINT
2738 
2739  // TOP_RIGHT_POINT
2744 
2745  // BOTTOM_RIGHT_POINT
2750 
2751  // BOTTOM_LEFT_POINT
2755  }
2756  }
2757 
2758  // qDebug() << "Now draw the lines with points:"
2759  //<< m_context.m_selectionPolygon.toString();
2760 
2761  // Top line
2762  mp_selectionRectangeLine1->start->setCoords(
2764  mp_selectionRectangeLine1->end->setCoords(
2766 
2767  // Only if we are drawing a selection rectangle for integration, do we
2768  // set arrow heads to the line.
2769  if(for_integration)
2770  {
2771  mp_selectionRectangeLine1->setHead(QCPLineEnding::esSpikeArrow);
2772  mp_selectionRectangeLine1->setTail(QCPLineEnding::esSpikeArrow);
2773  }
2774  else
2775  {
2776  mp_selectionRectangeLine1->setHead(QCPLineEnding::esNone);
2777  mp_selectionRectangeLine1->setTail(QCPLineEnding::esNone);
2778  }
2779 
2780  mp_selectionRectangeLine1->setVisible(true);
2781 
2782  // Right line
2783  mp_selectionRectangeLine2->start->setCoords(
2785  mp_selectionRectangeLine2->end->setCoords(
2787  mp_selectionRectangeLine2->setVisible(true);
2788 
2789  // Bottom line
2790  mp_selectionRectangeLine3->start->setCoords(
2792  mp_selectionRectangeLine3->end->setCoords(
2794  mp_selectionRectangeLine3->setVisible(true);
2795 
2796  // Left line
2797  mp_selectionRectangeLine4->start->setCoords(
2799  mp_selectionRectangeLine4->end->setCoords(
2801  mp_selectionRectangeLine4->setVisible(true);
2802 }
2803 
2804 
2805 void
2807 {
2808 
2809  // if(for_integration)
2810  // qDebug() << "for_integration:" << for_integration;
2811 
2812  // We are handling a skewed rectangle, that is a rectangle that is
2813  // tilted either to the left or to the right.
2814 
2815  // qDebug() << "m_context.m_selectRectangleWidth: "
2816  //<< m_context.m_selectRectangleWidth;
2817 
2818  // Top line
2819  // start
2820 
2821  // qDebug() << "m_context.m_startDragPoint: " <<
2822  // m_context.m_startDragPoint.x()
2823  //<< "-" << m_context.m_startDragPoint.y();
2824 
2825  // qDebug() << "m_context.m_currentDragPoint: "
2826  //<< m_context.m_currentDragPoint.x() << "-"
2827  //<< m_context.m_currentDragPoint.y();
2828 
2830 
2832  {
2833  // qDebug() << "Dragging from right to left";
2834 
2836  {
2837  // qDebug() << "Dragging from top to bottom";
2838 
2843 
2844  // m_context.m_selRectTopLeftPoint.setX(
2845  // m_context.m_startDragPoint.x() -
2846  // m_context.m_selectRectangleWidth);
2847  // m_context.m_selRectTopLeftPoint.setY(m_context.m_startDragPoint.y());
2848 
2852 
2853  // m_context.m_selRectTopRightPoint.setX(m_context.m_startDragPoint.x());
2854  // m_context.m_selRectTopRightPoint.setY(m_context.m_startDragPoint.y());
2855 
2860 
2861  // m_context.m_selRectBottomRightPoint.setX(
2862  // m_context.m_currentDragPoint.x() +
2863  // m_context.m_selectRectangleWidth);
2864  // m_context.m_selRectBottomRightPoint.setY(
2865  // m_context.m_currentDragPoint.y());
2866 
2871 
2872  // m_context.m_selRectBottomLeftPoint.setX(
2873  // m_context.m_currentDragPoint.x());
2874  // m_context.m_selRectBottomLeftPoint.setY(
2875  // m_context.m_currentDragPoint.y());
2876  }
2877  else
2878  {
2879  // qDebug() << "Dragging from bottom to top";
2880 
2885 
2886  // m_context.m_selRectTopLeftPoint.setX(
2887  // m_context.m_currentDragPoint.x());
2888  // m_context.m_selRectTopLeftPoint.setY(
2889  // m_context.m_currentDragPoint.y());
2890 
2895 
2896  // m_context.m_selRectTopRightPoint.setX(
2897  // m_context.m_currentDragPoint.x() +
2898  // m_context.m_selectRectangleWidth);
2899  // m_context.m_selRectTopRightPoint.setY(
2900  // m_context.m_currentDragPoint.y());
2901 
2902 
2906 
2907  // m_context.m_selRectBottomRightPoint.setX(
2908  // m_context.m_startDragPoint.x());
2909  // m_context.m_selRectBottomRightPoint.setY(
2910  // m_context.m_startDragPoint.y());
2911 
2916 
2917  // m_context.m_selRectBottomLeftPoint.setX(
2918  // m_context.m_startDragPoint.x() -
2919  // m_context.m_selectRectangleWidth);
2920  // m_context.m_selRectBottomLeftPoint.setY(
2921  // m_context.m_startDragPoint.y());
2922  }
2923  }
2924  // End of
2925  // Dragging from right to left.
2926  else
2927  {
2928  // qDebug() << "Dragging from left to right";
2929 
2931  {
2932  // qDebug() << "Dragging from top to bottom";
2933 
2937 
2938  // m_context.m_selRectTopLeftPoint.setX(m_context.m_startDragPoint.x());
2939  // m_context.m_selRectTopLeftPoint.setY(m_context.m_startDragPoint.y());
2940 
2945 
2946  // m_context.m_selRectTopRightPoint.setX(
2947  // m_context.m_startDragPoint.x() +
2948  // m_context.m_selectRectangleWidth);
2949  // m_context.m_selRectTopRightPoint.setY(m_context.m_startDragPoint.y());
2950 
2955 
2956  // m_context.m_selRectBottomRightPoint.setX(
2957  // m_context.m_currentDragPoint.x());
2958  // m_context.m_selRectBottomRightPoint.setY(
2959  // m_context.m_currentDragPoint.y());
2960 
2965 
2966  // m_context.m_selRectBottomLeftPoint.setX(
2967  // m_context.m_currentDragPoint.x() -
2968  // m_context.m_selectRectangleWidth);
2969  // m_context.m_selRectBottomLeftPoint.setY(
2970  // m_context.m_currentDragPoint.y());
2971  }
2972  else
2973  {
2974  // qDebug() << "Dragging from bottom to top";
2975 
2980 
2981  // m_context.m_selRectTopLeftPoint.setX(
2982  // m_context.m_currentDragPoint.x() -
2983  // m_context.m_selectRectangleWidth);
2984  // m_context.m_selRectTopLeftPoint.setY(
2985  // m_context.m_currentDragPoint.y());
2986 
2991 
2992  // m_context.m_selRectTopRightPoint.setX(
2993  // m_context.m_currentDragPoint.x());
2994  // m_context.m_selRectTopRightPoint.setY(
2995  // m_context.m_currentDragPoint.y());
2996 
3001 
3002  // m_context.m_selRectBottomRightPoint.setX(
3003  // m_context.m_startDragPoint.x() +
3004  // m_context.m_selectRectangleWidth);
3005  // m_context.m_selRectBottomRightPoint.setY(
3006  // m_context.m_startDragPoint.y());
3007 
3011 
3012  // m_context.m_selRectBottomLeftPoint.setX(
3013  // m_context.m_startDragPoint.x());
3014  // m_context.m_selRectBottomLeftPoint.setY(
3015  // m_context.m_startDragPoint.y());
3016  }
3017  }
3018  // End of Dragging from left to right.
3019 
3020  // qDebug() << "Now draw the lines with points:"
3021  //<< m_context.m_selectionPolygon.toString();
3022 
3023  // Top line
3024  mp_selectionRectangeLine1->start->setCoords(
3026  mp_selectionRectangeLine1->end->setCoords(
3028 
3029  // Only if we are drawing a selection rectangle for integration, do we set
3030  // arrow heads to the line.
3031  if(for_integration)
3032  {
3033  mp_selectionRectangeLine1->setHead(QCPLineEnding::esSpikeArrow);
3034  mp_selectionRectangeLine1->setTail(QCPLineEnding::esSpikeArrow);
3035  }
3036  else
3037  {
3038  mp_selectionRectangeLine1->setHead(QCPLineEnding::esNone);
3039  mp_selectionRectangeLine1->setTail(QCPLineEnding::esNone);
3040  }
3041 
3042  mp_selectionRectangeLine1->setVisible(true);
3043 
3044  // Right line
3045  mp_selectionRectangeLine2->start->setCoords(
3047  mp_selectionRectangeLine2->end->setCoords(
3049  mp_selectionRectangeLine2->setVisible(true);
3050 
3051  // Bottom line
3052  mp_selectionRectangeLine3->start->setCoords(
3054  mp_selectionRectangeLine3->end->setCoords(
3056  mp_selectionRectangeLine3->setVisible(true);
3057 
3058  // Left line
3059  mp_selectionRectangeLine4->end->setCoords(
3061  mp_selectionRectangeLine4->start->setCoords(
3063  mp_selectionRectangeLine4->setVisible(true);
3064 }
3065 
3066 
3067 void
3069  bool for_integration)
3070 {
3071 
3072  // qDebug() << "as_line_segment:" << as_line_segment;
3073  // qDebug() << "for_integration:" << for_integration;
3074 
3075  // We now need to construct the selection rectangle, either for zoom or for
3076  // integration.
3077 
3078  // There are two situations :
3079  //
3080  // 1. if the rectangle should look like a line segment
3081  //
3082  // 2. if the rectangle should actually look like a rectangle. In this case,
3083  // there are two sub-situations:
3084  //
3085  // a. if the S key is down, then the rectangle is
3086  // skewed, that is its vertical sides are not parallel to the y axis.
3087  //
3088  // b. otherwise the rectangle is conventional.
3089 
3090  if(as_line_segment)
3091  {
3092  update1DSelectionRectangle(for_integration);
3093  }
3094  else
3095  {
3096  if(!(m_context.m_keyboardModifiers & Qt::AltModifier))
3097  {
3098  update2DSelectionRectangleSquare(for_integration);
3099  }
3100  else if(m_context.m_keyboardModifiers & Qt::AltModifier)
3101  {
3102  update2DSelectionRectangleSkewed(for_integration);
3103  }
3104  }
3105 
3106  // This code automatically sorts the ranges (range start is always less than
3107  // range end) even if the user actually selects from high to low (right to
3108  // left or bottom to top). This has implications in code that uses the
3109  // m_context data to perform some computations. This is why it is important
3110  // that m_dragDirections be set correctly to establish where the current drag
3111  // point is actually located (at which point).
3112 
3117 
3122 
3123  // At this point, draw the text describing the widths.
3124 
3125  // We want the x-delta on the bottom of the rectangle, inside it
3126  // and the y-delta on the vertical side of the rectangle, inside it.
3127 
3128  // Draw the selection width text
3130 }
3131 
3132 void
3134 {
3135  mp_selectionRectangeLine1->setVisible(false);
3136  mp_selectionRectangeLine2->setVisible(false);
3137  mp_selectionRectangeLine3->setVisible(false);
3138  mp_selectionRectangeLine4->setVisible(false);
3139 
3140  if(reset_values)
3141  {
3143  }
3144 }
3145 
3146 
3147 void
3149 {
3151 }
3152 
3153 
3156 {
3157  // There are four lines that make the selection polygon. We want to know
3158  // which lines are visible.
3159 
3160  int current_selection_polygon = static_cast<int>(PolygonType::NOT_SET);
3161 
3162  if(mp_selectionRectangeLine1->visible())
3163  {
3164  current_selection_polygon |= static_cast<int>(PolygonType::TOP_LINE);
3165  // qDebug() << "current_selection_polygon:" << current_selection_polygon;
3166  }
3167  if(mp_selectionRectangeLine2->visible())
3168  {
3169  current_selection_polygon |= static_cast<int>(PolygonType::RIGHT_LINE);
3170  // qDebug() << "current_selection_polygon:" << current_selection_polygon;
3171  }
3172  if(mp_selectionRectangeLine3->visible())
3173  {
3174  current_selection_polygon |= static_cast<int>(PolygonType::BOTTOM_LINE);
3175  // qDebug() << "current_selection_polygon:" << current_selection_polygon;
3176  }
3177  if(mp_selectionRectangeLine4->visible())
3178  {
3179  current_selection_polygon |= static_cast<int>(PolygonType::LEFT_LINE);
3180  // qDebug() << "current_selection_polygon:" << current_selection_polygon;
3181  }
3182 
3183  // qDebug() << "returning visibility:" << current_selection_polygon;
3184 
3185  return static_cast<PolygonType>(current_selection_polygon);
3186 }
3187 
3188 
3189 bool
3191 {
3192  // Sanity check
3193  int check = 0;
3194 
3195  check += mp_selectionRectangeLine1->visible();
3196  check += mp_selectionRectangeLine2->visible();
3197  check += mp_selectionRectangeLine3->visible();
3198  check += mp_selectionRectangeLine4->visible();
3199 
3200  if(check > 0)
3201  return true;
3202 
3203  return false;
3204 }
3205 
3206 
3207 void
3209 {
3210  // qDebug() << "Setting focus to the QCustomPlot:" << this;
3211 
3212  QCustomPlot::setFocus();
3213 
3214  // qDebug() << "Emitting setFocusSignal().";
3215 
3216  emit setFocusSignal();
3217 }
3218 
3219 
3220 //! Redraw the background of the \p focusedPlotWidget plot widget.
3221 void
3222 BasePlotWidget::redrawPlotBackground(QWidget *focusedPlotWidget)
3223 {
3224  if(focusedPlotWidget == nullptr)
3225  throw ExceptionNotPossible(
3226  "baseplotwidget.cpp @ redrawPlotBackground(QWidget *focusedPlotWidget "
3227  "-- "
3228  "ERROR focusedPlotWidget cannot be nullptr.");
3229 
3230  if(dynamic_cast<QWidget *>(this) != focusedPlotWidget)
3231  {
3232  // The focused widget is not *this widget. We should make sure that
3233  // we were not the one that had the focus, because in this case we
3234  // need to redraw an unfocused background.
3235 
3236  axisRect()->setBackground(m_unfocusedBrush);
3237  }
3238  else
3239  {
3240  axisRect()->setBackground(m_focusedBrush);
3241  }
3242 
3243  replot();
3244 }
3245 
3246 
3247 void
3249 {
3250  m_context.m_xRange = QCPRange(xAxis->range().lower, xAxis->range().upper);
3251  m_context.m_yRange = QCPRange(yAxis->range().lower, yAxis->range().upper);
3252 
3253  // qDebug() << "The new updated context: " << m_context.toString();
3254 }
3255 
3256 
3257 const BasePlotContext &
3259 {
3260  return m_context;
3261 }
3262 
3263 
3264 } // namespace pappso
int basePlotContextPtrMetaTypeId
int basePlotContextMetaTypeId
Qt::MouseButtons m_mouseButtonsAtMousePress
SelectionPolygon m_selectionPolygon
DragDirections recordDragDirections()
Qt::KeyboardModifiers m_keyboardModifiers
Qt::MouseButtons m_lastPressedMouseButton
DragDirections m_dragDirections
Qt::MouseButtons m_pressedMouseButtons
Qt::MouseButtons m_mouseButtonsAtMouseRelease
Qt::MouseButtons m_lastReleasedMouseButton
int m_mouseMoveHandlerSkipAmount
How many mouse move events must be skipped *‍/.
std::size_t m_lastAxisRangeHistoryIndex
Index of the last axis range history item.
virtual void updateAxesRangeHistory()
Create new axis range history items and append them to the history.
virtual void mouseWheelHandler(QWheelEvent *event)
bool m_shouldTracersBeVisible
Tells if the tracers should be visible.
virtual void hideSelectionRectangle(bool reset_values=false)
virtual void mouseMoveHandlerDraggingCursor()
virtual void directionKeyReleaseEvent(QKeyEvent *event)
QCPItemText * mp_yDeltaTextItem
QCPItemLine * mp_selectionRectangeLine1
Rectangle defining the borders of zoomed-in/out data.
virtual QCPRange getOutermostRangeX(bool &found_range) const
void lastCursorHoveredPointSignal(const QPointF &pointf)
void plottableDestructionRequestedSignal(BasePlotWidget *base_plot_widget_p, QCPAbstractPlottable *plottable_p, const BasePlotContext &context)
virtual void update2DSelectionRectangleSquare(bool for_integration=false)
virtual const BasePlotContext & getContext() const
virtual void drawSelectionRectangleAndPrepareZoom(bool as_line_segment=false, bool for_integration=false)
virtual QCPRange getRangeY(bool &found_range, int index) const
virtual void keyPressEvent(QKeyEvent *event)
KEYBOARD-related EVENTS.
virtual ~BasePlotWidget()
Destruct this BasePlotWidget instance.
QCPItemLine * mp_selectionRectangeLine2
QCPItemText * mp_xDeltaTextItem
Text describing the x-axis delta value during a drag operation.
virtual void updateSelectionRectangle(bool as_line_segment=false, bool for_integration=false)
virtual void setAxisLabelX(const QString &label)
virtual void mouseMoveHandlerLeftButtonDraggingCursor()
int m_mouseMoveHandlerSkipCount
Counter to handle the "fat data" mouse move event handling.
virtual QCPRange getOutermostRangeY(bool &found_range) const
int dragDirection()
MOUSE-related EVENTS.
bool isClickOntoYAxis(const QPointF &mousePoint)
virtual void moveMouseCursorPixelCoordToGlobal(QPointF local_coordinates)
QCPItemLine * mp_hPosTracerItem
Horizontal position tracer.
QCPItemLine * mp_vPosTracerItem
Vertical position tracer.
virtual bool setupWidget()
virtual void replotWithAxesRanges(QCPRange xAxisRange, QCPRange yAxisRange, Axis axis)
virtual void setPen(const QPen &pen)
virtual void mouseReleaseHandlerRightButton()
virtual QCPRange getInnermostRangeX(bool &found_range) const
virtual void mouseMoveHandlerNotDraggingCursor()
virtual void redrawPlotBackground(QWidget *focusedPlotWidget)
Redraw the background of the focusedPlotWidget plot widget.
bool isClickOntoXAxis(const QPointF &mousePoint)
virtual void setAxisLabelY(const QString &label)
virtual void restoreAxesRangeHistory(std::size_t index)
Get the axis histories at index index and update the plot ranges.
virtual void spaceKeyReleaseEvent(QKeyEvent *event)
virtual void replotWithAxisRangeX(double lower, double upper)
virtual void createAllAncillaryItems()
virtual QColor getPlottingColor(QCPAbstractPlottable *plottable_p) const
virtual void mouseReleaseHandlerLeftButton()
QBrush m_focusedBrush
Color used for the background of focused plot.
QPen m_pen
Pen used to draw the graph and textual elements in the plot widget.
virtual bool isSelectionRectangleVisible()
virtual void drawYDeltaFeatures()
virtual bool isVerticalDisplacementAboveThreshold()
virtual void mousePressHandler(QMouseEvent *event)
KEYBOARD-related EVENTS.
virtual void verticalMoveMouseCursorCountPixels(int pixel_count)
void mouseWheelEventSignal(const BasePlotContext &context)
virtual void resetAxesRangeHistory()
virtual void showTracers()
Show the traces (vertical and horizontal).
virtual QPointF horizontalGetGraphCoordNewPointCountPixels(int pixel_count)
QCPItemLine * mp_selectionRectangeLine4
virtual void horizontalMoveMouseCursorCountPixels(int pixel_count)
BasePlotWidget(QWidget *parent)
std::vector< QCPRange * > m_yAxisRangeHistory
List of y axis ranges occurring during the panning zooming actions.
virtual QCPRange getInnermostRangeY(bool &found_range) const
virtual void setFocus()
PLOT ITEMS : TRACER TEXT ITEMS...
void keyReleaseEventSignal(const BasePlotContext &context)
virtual const QPen & getPen() const
virtual void updateContextXandYAxisRanges()
virtual void update1DSelectionRectangle(bool for_integration=false)
virtual PolygonType whatIsVisibleOfTheSelectionRectangle()
virtual void mousePseudoButtonKeyPressEvent(QKeyEvent *event)
virtual void setPlottingColor(QCPAbstractPlottable *plottable_p, const QColor &new_color)
virtual void calculateDragDeltas()
virtual QPointF verticalGetGraphCoordNewPointCountPixels(int pixel_count)
void plotRangesChangedSignal(const BasePlotContext &context)
QCPItemLine * mp_vStartTracerItem
Vertical selection start tracer (typically in green).
virtual void mouseReleaseHandler(QMouseEvent *event)
QBrush m_unfocusedBrush
Color used for the background of unfocused plot.
virtual void drawXDeltaFeatures()
virtual void axisRescale()
RANGE-related functions.
virtual void moveMouseCursorGraphCoordToGlobal(QPointF plot_coordinates)
virtual QString allLayerNamesToString() const
QCPItemLine * mp_selectionRectangeLine3
virtual void axisDoubleClickHandler(QCPAxis *axis, QCPAxis::SelectablePart part, QMouseEvent *event)
virtual void mouseMoveHandlerRightButtonDraggingCursor()
QCPItemLine * mp_vEndTracerItem
Vertical selection end tracer (typically in red).
virtual void mouseMoveHandler(QMouseEvent *event)
KEYBOARD-related EVENTS.
virtual void directionKeyPressEvent(QKeyEvent *event)
virtual QString layerableLayerName(QCPLayerable *layerable_p) const
virtual void keyReleaseEvent(QKeyEvent *event)
Handle specific key codes and trigger respective actions.
virtual void resetSelectionRectangle()
virtual void restorePreviousAxesRangeHistory()
Go up one history element in the axis history.
virtual int layerableLayerIndex(QCPLayerable *layerable_p) const
void integrationRequestedSignal(const BasePlotContext &context)
void xAxisMeasurementSignal(const BasePlotContext &context, bool with_delta)
QCPRange getRange(Axis axis, RangeType range_type, bool &found_range) const
virtual void replotWithAxisRangeY(double lower, double upper)
virtual void hideTracers()
Hide the traces (vertical and horizontal).
virtual void update2DSelectionRectangleSkewed(bool for_integration=false)
virtual void mousePseudoButtonKeyReleaseEvent(QKeyEvent *event)
virtual void hideAllPlotItems()
PLOTTING / REPLOTTING functions.
virtual QCPRange getRangeX(bool &found_range, int index) const
MOUSE MOVEMENTS mouse/keyboard-triggered.
std::vector< QCPRange * > m_xAxisRangeHistory
List of x axis ranges occurring during the panning zooming actions.
BasePlotContext m_context
void setPoint(PointSpecs point_spec, double x, double y)
QPointF getRightMostPoint() const
QPointF getLeftMostPoint() const
QPointF getBottomMostPoint() const
void set1D(double x_range_start, double x_range_end)
QPointF getPoint(PointSpecs point_spec) const
tries to keep as much as possible monoisotopes, removing any possible C13 peaks and changes multichar...
Definition: aa.cpp:39
Axis
Definition: types.h:181