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  // QPointF mousePoint = event->localPos();
933  QPointF mousePoint = event->position();
934  qDebug();
935  qDebug() << "local mousePoint position in pixels:" << mousePoint;
936 
937  m_context.m_lastCursorHoveredPoint.setX(xAxis->pixelToCoord(mousePoint.x()));
938  qDebug();
939  m_context.m_lastCursorHoveredPoint.setY(yAxis->pixelToCoord(mousePoint.y()));
940  qDebug();
941 
942  // qDebug() << "lastCursorHoveredPoint coord:"
943  //<< m_context.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  if(m_context.m_pressedMouseButtons & Qt::LeftButton ||
950  m_context.m_pressedMouseButtons & Qt::RightButton)
952  else
954  // }
955  qDebug();
956  event->accept();
957 }
958 
959 
960 void
962 {
963 
964  qDebug();
966 
967  qDebug();
968  // We are not dragging the mouse (no button pressed), simply let this
969  // widget's consumer know the position of the cursor and update the markers.
970  // The consumer of this widget will update mouse cursor position at
971  // m_context.m_lastCursorHoveredPoint if so needed.
972 
974 
975  qDebug();
976 
977  // We are not dragging, so we do not show the region end tracer we only
978  // show the anchoring start trace that might be of use if the user starts
979  // using the arrow keys to move the cursor.
980  if(mp_vEndTracerItem != nullptr)
981  mp_vEndTracerItem->setVisible(false);
982 
983  qDebug();
984  // Only bother with the tracers if the user wants them to be visible.
985  // Their crossing point must be exactly at the last cursor-hovered point.
986 
988  {
989  // We are not dragging, so only show the position markers (v and h);
990 
991  qDebug();
992  if(mp_hPosTracerItem != nullptr)
993  {
994  // Horizontal position tracer.
995  mp_hPosTracerItem->setVisible(true);
996  mp_hPosTracerItem->start->setCoords(
997  xAxis->range().lower, m_context.m_lastCursorHoveredPoint.y());
998  mp_hPosTracerItem->end->setCoords(
999  xAxis->range().upper, m_context.m_lastCursorHoveredPoint.y());
1000  }
1001 
1002  qDebug();
1003  // Vertical position tracer.
1004  if(mp_vPosTracerItem != nullptr)
1005  {
1006  mp_vPosTracerItem->setVisible(true);
1007 
1008  mp_vPosTracerItem->setVisible(true);
1009  mp_vPosTracerItem->start->setCoords(
1010  m_context.m_lastCursorHoveredPoint.x(), yAxis->range().upper);
1011  mp_vPosTracerItem->end->setCoords(
1012  m_context.m_lastCursorHoveredPoint.x(), yAxis->range().lower);
1013  }
1014 
1015  qDebug();
1016  replot();
1017  }
1018 
1019 
1020  return;
1021 }
1022 
1023 
1024 void
1026 {
1027  qDebug();
1029 
1030  // Now store the mouse position data into the the current drag point
1031  // member datum, that will be used in countless occasions later.
1033  m_context.m_keyboardModifiers = QGuiApplication::queryKeyboardModifiers();
1034 
1035  // When we drag (either keyboard or mouse), we hide the position markers
1036  // (black) and we show the start and end vertical markers for the region.
1037  // Then, we draw the horizontal region range marker that delimits
1038  // horizontally the dragged-over region.
1039 
1040  if(mp_hPosTracerItem != nullptr)
1041  mp_hPosTracerItem->setVisible(false);
1042  if(mp_vPosTracerItem != nullptr)
1043  mp_vPosTracerItem->setVisible(false);
1044 
1045  // Only bother with the tracers if the user wants them to be visible.
1046  if(m_shouldTracersBeVisible && (mp_vEndTracerItem != nullptr))
1047  {
1048 
1049  // The vertical end tracer position must be refreshed.
1050  mp_vEndTracerItem->start->setCoords(m_context.m_currentDragPoint.x(),
1051  yAxis->range().upper);
1052 
1053  mp_vEndTracerItem->end->setCoords(m_context.m_currentDragPoint.x(),
1054  yAxis->range().lower);
1055 
1056  mp_vEndTracerItem->setVisible(true);
1057  }
1058 
1059  // Whatever the button, when we are dealing with the axes, we do not
1060  // want to show any of the tracers.
1061 
1063  {
1064  qDebug();
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  qDebug();
1078  // Since we are not dragging the mouse cursor over the axes, make sure
1079  // we store the drag directions in the context, as this might be
1080  // useful for later operations.
1081 
1083 
1084  // qDebug() << m_context.toString();
1085  }
1086 
1087  // Because when we drag the mouse button (whatever the button) we need to
1088  // know what is the drag delta (distance between start point and current
1089  // point of the drag operation) on both axes, ask that these x|y deltas be
1090  // computed.
1091  qDebug();
1093 
1094  // Now deal with the BUTTON-SPECIFIC CODE.
1095 
1096  if(m_context.m_mouseButtonsAtMousePress & Qt::LeftButton)
1097  {
1098  qDebug();
1100  }
1101  else if(m_context.m_mouseButtonsAtMousePress & Qt::RightButton)
1102  {
1103  qDebug();
1105  }
1106 
1107  qDebug();
1108 }
1109 
1110 
1111 void
1113 {
1114  qDebug() << "the left button is dragging.";
1115 
1116  // Set the context.m_isMeasuringDistance to false, which later might be set to
1117  // true if effectively we are measuring a distance. This is required because
1118  // the derived widget classes might want to know if they have to perform
1119  // some action on the basis that context is measuring a distance, for
1120  // example the mass spectrum-specific widget might want to compute
1121  // deconvolutions.
1122 
1124 
1125  // Let's first check if the mouse drag operation originated on either
1126  // axis. In that case, the user is performing axis reframing or rescaling.
1127 
1129  {
1130  qDebug() << "Click was on one of the axes.";
1131 
1132  if(m_context.m_keyboardModifiers & Qt::ControlModifier)
1133  {
1134  // The user is asking a rescale of the plot.
1135 
1136  // We know that we do not want the tracers when we perform axis
1137  // rescaling operations.
1138 
1139  if(mp_hPosTracerItem != nullptr)
1140  mp_hPosTracerItem->setVisible(false);
1141  if(mp_vPosTracerItem != nullptr)
1142  mp_vPosTracerItem->setVisible(false);
1143 
1144  if(mp_vStartTracerItem != nullptr)
1145  mp_vStartTracerItem->setVisible(false);
1146  if(mp_vEndTracerItem != nullptr)
1147  mp_vEndTracerItem->setVisible(false);
1148 
1149  // This operation is particularly intensive, thus we want to
1150  // reduce the number of calculations by skipping this calculation
1151  // a number of times. The user can ask for this feature by
1152  // clicking the 'Q' letter.
1153 
1154  if(m_context.m_pressedKeyCode == Qt::Key_Q)
1155  {
1157  {
1159  return;
1160  }
1161  else
1162  {
1164  }
1165  }
1166 
1167  qDebug() << "Asking that the axes be rescaled.";
1168 
1169  axisRescale();
1170  }
1171  else
1172  {
1173  // The user was simply dragging the axis. Just pan, that is slide
1174  // the plot in the same direction as the mouse movement and with the
1175  // same amplitude.
1176 
1177  qDebug() << "Asking that the axes be panned.";
1178 
1179  axisPan();
1180  }
1181 
1182  return;
1183  }
1184 
1185  // At this point we understand that the user was not performing any
1186  // panning/rescaling operation by clicking on any one of the axes.. Go on
1187  // with other possibilities.
1188 
1189  // Let's check if the user is actually drawing a rectangle (covering a
1190  // real area) or is drawing a line.
1191 
1192  // qDebug() << "The mouse dragging did not originate on an axis.";
1193 
1195  {
1196  qDebug() << "Apparently the selection is a real rectangle.";
1197 
1198  // When we draw a rectangle the tracers are of no use.
1199 
1200  if(mp_hPosTracerItem != nullptr)
1201  mp_hPosTracerItem->setVisible(false);
1202  if(mp_vPosTracerItem != nullptr)
1203  mp_vPosTracerItem->setVisible(false);
1204 
1205  if(mp_vStartTracerItem != nullptr)
1206  mp_vStartTracerItem->setVisible(false);
1207  if(mp_vEndTracerItem != nullptr)
1208  mp_vEndTracerItem->setVisible(false);
1209 
1210  // Draw the rectangle, false, not as line segment and
1211  // false, not for integration
1213 
1214  // Draw the selection width/height text
1217 
1218  // qDebug() << "The selection polygon:"
1219  //<< m_context.m_selectionPolygon.toString();
1220  }
1221  else
1222  {
1223  qDebug() << "Apparently we are measuring a delta.";
1224 
1225  // Draw the rectangle, true, as line segment and
1226  // false, not for integration
1228 
1229  // qDebug() << "The selection polygon:"
1230  //<< m_context.m_selectionPolygon.toString();
1231 
1232  // The pure position tracers should be hidden.
1233  if(mp_hPosTracerItem != nullptr)
1234  mp_hPosTracerItem->setVisible(true);
1235  if(mp_vPosTracerItem != nullptr)
1236  mp_vPosTracerItem->setVisible(true);
1237 
1238  // Then, make sure the region range vertical tracers are visible.
1239  if(mp_vStartTracerItem != nullptr)
1240  mp_vStartTracerItem->setVisible(true);
1241  if(mp_vEndTracerItem != nullptr)
1242  mp_vEndTracerItem->setVisible(true);
1243 
1244  // Draw the selection width text
1246  }
1247  qDebug();
1248 }
1249 
1250 
1251 void
1253 {
1254  qDebug() << "the right button is dragging.";
1255 
1256  // Set the context.m_isMeasuringDistance to false, which later might be set to
1257  // true if effectively we are measuring a distance. This is required because
1258  // the derived widgets might want to know if they have to perform some
1259  // action on the basis that context is measuring a distance, for example the
1260  // mass spectrum-specific widget might want to compute deconvolutions.
1261 
1263 
1265  {
1266  // qDebug() << "Apparently the selection is a real rectangle.";
1267 
1268  // When we draw a rectangle the tracers are of no use.
1269 
1270  if(mp_hPosTracerItem != nullptr)
1271  mp_hPosTracerItem->setVisible(false);
1272  if(mp_vPosTracerItem != nullptr)
1273  mp_vPosTracerItem->setVisible(false);
1274 
1275  if(mp_vStartTracerItem != nullptr)
1276  mp_vStartTracerItem->setVisible(false);
1277  if(mp_vEndTracerItem != nullptr)
1278  mp_vEndTracerItem->setVisible(false);
1279 
1280  // Draw the rectangle, false for as_line_segment and true, for
1281  // integration.
1283 
1284  // Draw the selection width/height text
1287  }
1288  else
1289  {
1290  // qDebug() << "Apparently the selection is a not a rectangle.";
1291 
1292  // Draw the rectangle, true, as line segment and
1293  // false, true for integration
1295 
1296  // Draw the selection width text
1298  }
1299 
1300  // Draw the selection width text
1302 }
1303 
1304 
1305 void
1307 {
1308  // When the user clicks this widget it has to take focus.
1309  setFocus();
1310 
1311  // Fix from Qt5 to Qt6
1312  //QPointF mousePoint = event->localPos();
1313  QPointF mousePoint = event->position();
1314 
1315 
1316  m_context.m_lastPressedMouseButton = event->button();
1317  m_context.m_mouseButtonsAtMousePress = event->buttons();
1318 
1319  // The pressedMouseButtons must continually inform on the status of
1320  // pressed buttons so add the pressed button.
1321  m_context.m_pressedMouseButtons |= event->button();
1322 
1323  qDebug().noquote() << m_context.toString();
1324 
1325  // In all the processing of the events, we need to know if the user is
1326  // clicking somewhere with the intent to change the plot ranges (reframing
1327  // or rescaling the plot).
1328  //
1329  // Reframing the plot means that the new x and y axes ranges are modified
1330  // so that they match the region that the user has encompassed by left
1331  // clicking the mouse and dragging it over the plot. That is we reframe
1332  // the plot so that it contains only the "selected" region.
1333  //
1334  // Rescaling the plot means the the new x|y axis range is modified such
1335  // that the lower axis range is constant and the upper axis range is moved
1336  // either left or right by the same amont as the x|y delta encompassed by
1337  // the user moving the mouse. The axis is thus either compressed (mouse
1338  // movement is leftwards) or un-compressed (mouse movement is rightwards).
1339 
1340  // There are two ways to perform axis range modifications:
1341  //
1342  // 1. By clicking on any of the axes
1343  // 2. By clicking on the plot region but using keyboard key modifiers,
1344  // like Alt and Ctrl.
1345  //
1346  // We need to know both cases separately which is why we need to perform a
1347  // number of tests below.
1348 
1349  // Let's check if the click is on the axes, either X or Y, because that
1350  // will allow us to take proper actions.
1351 
1352  if(isClickOntoXAxis(mousePoint))
1353  {
1354  // The X axis was clicked upon, we need to document that:
1355  // qDebug() << __FILE__ << __LINE__
1356  //<< "Layout element is axisRect and actually on an X axis part.";
1357 
1359 
1360  // int currentInteractions = interactions();
1361  // currentInteractions |= QCP::iRangeDrag;
1362  // setInteractions((QCP::Interaction)currentInteractions);
1363  // axisRect()->setRangeDrag(xAxis->orientation());
1364  }
1365  else
1366  m_context.m_wasClickOnXAxis = false;
1367 
1368  if(isClickOntoYAxis(mousePoint))
1369  {
1370  // The Y axis was clicked upon, we need to document that:
1371  // qDebug() << __FILE__ << __LINE__
1372  //<< "Layout element is axisRect and actually on an Y axis part.";
1373 
1375 
1376  // int currentInteractions = interactions();
1377  // currentInteractions |= QCP::iRangeDrag;
1378  // setInteractions((QCP::Interaction)currentInteractions);
1379  // axisRect()->setRangeDrag(yAxis->orientation());
1380  }
1381  else
1382  m_context.m_wasClickOnYAxis = false;
1383 
1384  // At this point, let's see if we need to remove the QCP::iRangeDrag bit:
1385 
1387  {
1388  // qDebug() << __FILE__ << __LINE__
1389  // << "Click outside of axes.";
1390 
1391  // int currentInteractions = interactions();
1392  // currentInteractions = currentInteractions & ~QCP::iRangeDrag;
1393  // setInteractions((QCP::Interaction)currentInteractions);
1394  }
1395 
1396  m_context.m_startDragPoint.setX(xAxis->pixelToCoord(mousePoint.x()));
1397  m_context.m_startDragPoint.setY(yAxis->pixelToCoord(mousePoint.y()));
1398 
1399  // Now install the vertical start tracer at the last cursor hovered
1400  // position.
1401  if((m_shouldTracersBeVisible) && (mp_vStartTracerItem != nullptr))
1402  mp_vStartTracerItem->setVisible(true);
1403 
1404  if(mp_vStartTracerItem != nullptr)
1405  {
1406  mp_vStartTracerItem->start->setCoords(
1407  m_context.m_lastCursorHoveredPoint.x(), yAxis->range().upper);
1408  mp_vStartTracerItem->end->setCoords(
1409  m_context.m_lastCursorHoveredPoint.x(), yAxis->range().lower);
1410  }
1411 
1412  replot();
1413 }
1414 
1415 
1416 void
1418 {
1419  // Now the real code of this function.
1420 
1421  m_context.m_lastReleasedMouseButton = event->button();
1422 
1423  // The event->buttons() is the description of the buttons that are pressed at
1424  // the moment the handler is invoked, that is now. If left and right were
1425  // pressed, and left was released, event->buttons() would be right.
1426  m_context.m_mouseButtonsAtMouseRelease = event->buttons();
1427 
1428  // The pressedMouseButtons must continually inform on the status of pressed
1429  // buttons so remove the released button.
1430  m_context.m_pressedMouseButtons ^= event->button();
1431 
1432  // qDebug().noquote() << m_context.toString();
1433 
1434  // We'll need to know if modifiers were pressed a the moment the user
1435  // released the mouse button.
1436  m_context.m_keyboardModifiers = QGuiApplication::keyboardModifiers();
1437 
1439  {
1440  // Let the user know that the mouse was *not* being dragged.
1441  m_context.m_wasMouseDragging = false;
1442 
1443  event->accept();
1444 
1445  return;
1446  }
1447 
1448  // Let the user know that the mouse was being dragged.
1450 
1451  // We cannot hide all items in one go because we rely on their visibility
1452  // to know what kind of dragging operation we need to perform (line-only
1453  // X-based zoom or rectangle-based X- and Y-based zoom, for example). The
1454  // only thing we know is that we can make the text invisible.
1455 
1456  // Same for the x delta text item
1457  mp_xDeltaTextItem->setVisible(false);
1458  mp_yDeltaTextItem->setVisible(false);
1459 
1460  // We do not show the end vertical region range marker.
1461  mp_vEndTracerItem->setVisible(false);
1462 
1463  // Horizontal position tracer.
1464  mp_hPosTracerItem->setVisible(true);
1465  mp_hPosTracerItem->start->setCoords(xAxis->range().lower,
1467  mp_hPosTracerItem->end->setCoords(xAxis->range().upper,
1469 
1470  // Vertical position tracer.
1471  mp_vPosTracerItem->setVisible(true);
1472 
1473  mp_vPosTracerItem->setVisible(true);
1475  yAxis->range().upper);
1477  yAxis->range().lower);
1478 
1479  // Force replot now because later that call might not be performed.
1480  replot();
1481 
1482  // If we were using the "quantum" display for the rescale of the axes
1483  // using the Ctrl-modified left button click drag in the axes, then reset
1484  // the count to 0.
1486 
1487  // Now that we have computed the useful ranges, we need to check what to do
1488  // depending on the button that was pressed.
1489 
1490  if(m_context.m_lastReleasedMouseButton == Qt::LeftButton)
1491  {
1493  }
1494  else if(m_context.m_lastReleasedMouseButton == Qt::RightButton)
1495  {
1497  }
1498 
1499  // By definition we are stopping the drag operation by releasing the mouse
1500  // button. Whatever that mouse button was pressed before and if there was
1501  // one pressed before. We cannot set that boolean value to false before
1502  // this place, because we call a number of routines above that need to know
1503  // that dragging was occurring. Like mouseReleaseHandledEvent(event) for
1504  // example.
1505 
1506  m_context.m_isMouseDragging = false;
1507 
1508  event->accept();
1509 
1510  return;
1511 }
1512 
1513 
1514 void
1516 {
1517 
1519  {
1520 
1521  // When the mouse move handler pans the plot, we cannot store each axes
1522  // range history element that would mean store a huge amount of such
1523  // elements, as many element as there are mouse move event handled by
1524  // the Qt event queue. But we can store an axis range history element
1525  // for the last situation of the mouse move: when the button is
1526  // released:
1527 
1529 
1531 
1532  replot();
1533 
1534  // Nothing else to do.
1535  return;
1536  }
1537 
1538  // There are two possibilities:
1539  //
1540  // 1. The full selection polygon (four lines) were currently drawn, which
1541  // means the user was willing to perform a zoom operation
1542  //
1543  // 2. Only the first top line was drawn, which means the user was dragging
1544  // the cursor horizontally. That might have two ends, as shown below.
1545 
1546  // So, first check what is drawn of the selection polygon.
1547 
1548  PolygonType current_selection_polygon_type =
1550 
1551  // Now that we know what was currently drawn of the selection polygon, we can
1552  // remove it. true to reset the values to 0.
1553  hideSelectionRectangle(true);
1554 
1555  // Force replot now because later that call might not be performed.
1556  replot();
1557 
1558  if(current_selection_polygon_type == PolygonType::FULL_POLYGON)
1559  {
1560  // qDebug() << "Yes, the full polygon was visible";
1561 
1562  // If we were dragging with the left button pressed and could draw a
1563  // rectangle, then we were preparing a zoom operation. Let's bring that
1564  // operation to its accomplishment.
1565 
1566  axisZoom();
1567 
1568  // qDebug() << "The selection polygon:"
1569  //<< m_context.m_selectionPolygon.toString();
1570 
1571  return;
1572  }
1573  else if(current_selection_polygon_type == PolygonType::TOP_LINE)
1574  {
1575  // qDebug() << "No, only the top line of the full polygon was visible";
1576 
1577  // The user was dragging the left mouse cursor and that may mean they were
1578  // measuring a distance or willing to perform a special zoom operation if
1579  // the Ctrl key was down.
1580 
1581  // If the user started by clicking in the plot region, dragged the mouse
1582  // cursor with the left button and pressed the Ctrl modifier, then that
1583  // means that they wanted to do a rescale over the x-axis in the form of a
1584  // reframing.
1585 
1586  if(m_context.m_keyboardModifiers & Qt::ControlModifier)
1587  {
1588  return axisReframe();
1589 
1590  // qDebug() << "The selection polygon:"
1591  //<< m_context.m_selectionPolygon.toString();
1592  }
1593  }
1594  // else
1595  // qDebug() << "Another possibility.";
1596 }
1597 
1598 
1599 void
1601 {
1602  qDebug();
1603  // The right button is used for the integrations. Not for axis range
1604  // operations. So all we have to do is remove the various graphics items and
1605  // send a signal with the context that contains all the data required by the
1606  // user to perform the integrations over the right plot regions.
1607 
1608  // Whatever we were doing we need to make the selection line invisible:
1609 
1610  if(mp_xDeltaTextItem->visible())
1611  mp_xDeltaTextItem->setVisible(false);
1612  if(mp_yDeltaTextItem->visible())
1613  mp_yDeltaTextItem->setVisible(false);
1614 
1615  // Also make the vertical end tracer invisible.
1616  mp_vEndTracerItem->setVisible(false);
1617 
1618  // Once the integration is asked for, then the selection rectangle if of no
1619  // more use.
1621 
1622  // Force replot now because later that call might not be performed.
1623  replot();
1624 
1625  // Note that we only request an integration if the x-axis delta is enough.
1626 
1627  double x_delta_pixel =
1628  fabs(xAxis->coordToPixel(m_context.m_currentDragPoint.x()) -
1629  xAxis->coordToPixel(m_context.m_startDragPoint.x()));
1630 
1631  if(x_delta_pixel > 3)
1633  // else
1634  qDebug() << "Not asking for integration.";
1635 }
1636 
1637 
1638 void
1639 BasePlotWidget::mouseWheelHandler([[maybe_unused]] QWheelEvent *event)
1640 {
1641  // We should record the new range values each time the wheel is used to
1642  // zoom/unzoom.
1643 
1644  m_context.m_xRange = QCPRange(xAxis->range());
1645  m_context.m_yRange = QCPRange(yAxis->range());
1646 
1647  // qDebug() << "New x range: " << m_context.m_xRange;
1648  // qDebug() << "New y range: " << m_context.m_yRange;
1649 
1651 
1654 
1655  event->accept();
1656 }
1657 
1658 
1659 void
1661  QCPAxis *axis,
1662  [[maybe_unused]] QCPAxis::SelectablePart part,
1663  QMouseEvent *event)
1664 {
1665  // qDebug();
1666 
1667  m_context.m_keyboardModifiers = QGuiApplication::queryKeyboardModifiers();
1668 
1669  if(m_context.m_keyboardModifiers & Qt::ControlModifier)
1670  {
1671  // qDebug();
1672 
1673  // If the Ctrl modifiers is active, then both axes are to be reset. Also
1674  // the histories are reset also.
1675 
1676  rescaleAxes();
1678  }
1679  else
1680  {
1681  // qDebug();
1682 
1683  // Only the axis passed as parameter is to be rescaled.
1684  // Reset the range of that axis to the max view possible.
1685 
1686  axis->rescale();
1687 
1689 
1690  event->accept();
1691  }
1692 
1693  // The double-click event does not cancel the mouse press event. That is, if
1694  // left-double-clicking, at the end of the operation the button still
1695  // "pressed". We need to remove manually the button from the pressed buttons
1696  // context member.
1697 
1698  m_context.m_pressedMouseButtons ^= event->button();
1699 
1701 
1703 
1704  replot();
1705 }
1706 
1707 
1708 bool
1709 BasePlotWidget::isClickOntoXAxis(const QPointF &mousePoint)
1710 {
1711  QCPLayoutElement *layoutElement = layoutElementAt(mousePoint);
1712 
1713  if(layoutElement &&
1714  layoutElement == dynamic_cast<QCPLayoutElement *>(axisRect()))
1715  {
1716  // The graph is *inside* the axisRect that is the outermost envelope of
1717  // the graph. Thus, if we want to know if the click was indeed on an
1718  // axis, we need to check what selectable part of the the axisRect we
1719  // were
1720  // clicking:
1721  QCPAxis::SelectablePart selectablePart;
1722 
1723  selectablePart = xAxis->getPartAt(mousePoint);
1724 
1725  if(selectablePart == QCPAxis::spAxisLabel ||
1726  selectablePart == QCPAxis::spAxis ||
1727  selectablePart == QCPAxis::spTickLabels)
1728  return true;
1729  }
1730 
1731  return false;
1732 }
1733 
1734 
1735 bool
1736 BasePlotWidget::isClickOntoYAxis(const QPointF &mousePoint)
1737 {
1738  QCPLayoutElement *layoutElement = layoutElementAt(mousePoint);
1739 
1740  if(layoutElement &&
1741  layoutElement == dynamic_cast<QCPLayoutElement *>(axisRect()))
1742  {
1743  // The graph is *inside* the axisRect that is the outermost envelope of
1744  // the graph. Thus, if we want to know if the click was indeed on an
1745  // axis, we need to check what selectable part of the the axisRect we
1746  // were
1747  // clicking:
1748  QCPAxis::SelectablePart selectablePart;
1749 
1750  selectablePart = yAxis->getPartAt(mousePoint);
1751 
1752  if(selectablePart == QCPAxis::spAxisLabel ||
1753  selectablePart == QCPAxis::spAxis ||
1754  selectablePart == QCPAxis::spTickLabels)
1755  return true;
1756  }
1757 
1758  return false;
1759 }
1760 
1761 /// MOUSE-related EVENTS
1762 
1763 
1764 /// MOUSE MOVEMENTS mouse/keyboard-triggered
1765 
1766 int
1768 {
1769  // The user is dragging the mouse, probably to rescale the axes, but we need
1770  // to sort out in which direction the drag is happening.
1771 
1772  // This function should be called after calculateDragDeltas, so that
1773  // m_context has the proper x/y delta values that we'll compare.
1774 
1775  // Note that we cannot compare simply x or y deltas because the y axis might
1776  // have a different scale that the x axis. So we first need to convert the
1777  // positions to pixels.
1778 
1779  double x_delta_pixel =
1780  fabs(xAxis->coordToPixel(m_context.m_currentDragPoint.x()) -
1781  xAxis->coordToPixel(m_context.m_startDragPoint.x()));
1782 
1783  double y_delta_pixel =
1784  fabs(yAxis->coordToPixel(m_context.m_currentDragPoint.y()) -
1785  yAxis->coordToPixel(m_context.m_startDragPoint.y()));
1786 
1787  if(x_delta_pixel > y_delta_pixel)
1788  return Qt::Horizontal;
1789 
1790  return Qt::Vertical;
1791 }
1792 
1793 
1794 void
1796 {
1797  // First convert the graph coordinates to pixel coordinates.
1798 
1799  QPointF pixels_coordinates(xAxis->coordToPixel(graph_coordinates.x()),
1800  yAxis->coordToPixel(graph_coordinates.y()));
1801 
1802  moveMouseCursorPixelCoordToGlobal(pixels_coordinates.toPoint());
1803 }
1804 
1805 
1806 void
1808 {
1809  // qDebug() << "Calling set pos with new cursor position.";
1810  QCursor::setPos(mapToGlobal(pixel_coordinates.toPoint()));
1811 }
1812 
1813 
1814 void
1816 {
1817  QPointF graph_coord = horizontalGetGraphCoordNewPointCountPixels(pixel_count);
1818 
1819  QPointF pixel_coord(xAxis->coordToPixel(graph_coord.x()),
1820  yAxis->coordToPixel(graph_coord.y()));
1821 
1822  // Now we need ton convert the new coordinates to the global position system
1823  // and to move the cursor to that new position. That will create an event to
1824  // move the mouse cursor.
1825 
1826  moveMouseCursorPixelCoordToGlobal(pixel_coord.toPoint());
1827 }
1828 
1829 
1830 QPointF
1832 {
1833  QPointF pixel_coordinates(
1834  xAxis->coordToPixel(m_context.m_lastCursorHoveredPoint.x()) + pixel_count,
1835  yAxis->coordToPixel(m_context.m_lastCursorHoveredPoint.y()));
1836 
1837  // Now convert back to local coordinates.
1838 
1839  QPointF graph_coordinates(xAxis->pixelToCoord(pixel_coordinates.x()),
1840  yAxis->pixelToCoord(pixel_coordinates.y()));
1841 
1842  return graph_coordinates;
1843 }
1844 
1845 
1846 void
1848 {
1849 
1850  QPointF graph_coord = verticalGetGraphCoordNewPointCountPixels(pixel_count);
1851 
1852  QPointF pixel_coord(xAxis->coordToPixel(graph_coord.x()),
1853  yAxis->coordToPixel(graph_coord.y()));
1854 
1855  // Now we need ton convert the new coordinates to the global position system
1856  // and to move the cursor to that new position. That will create an event to
1857  // move the mouse cursor.
1858 
1859  moveMouseCursorPixelCoordToGlobal(pixel_coord.toPoint());
1860 }
1861 
1862 
1863 QPointF
1865 {
1866  QPointF pixel_coordinates(
1867  xAxis->coordToPixel(m_context.m_lastCursorHoveredPoint.x()),
1868  yAxis->coordToPixel(m_context.m_lastCursorHoveredPoint.y()) + pixel_count);
1869 
1870  // Now convert back to local coordinates.
1871 
1872  QPointF graph_coordinates(xAxis->pixelToCoord(pixel_coordinates.x()),
1873  yAxis->pixelToCoord(pixel_coordinates.y()));
1874 
1875  return graph_coordinates;
1876 }
1877 
1878 /// MOUSE MOVEMENTS mouse/keyboard-triggered
1879 
1880 
1881 /// RANGE-related functions
1882 
1883 QCPRange
1884 BasePlotWidget::getRangeX(bool &found_range, int index) const
1885 {
1886  QCPGraph *graph_p = graph(index);
1887 
1888  if(graph_p == nullptr)
1889  qFatal("Programming error.");
1890 
1891  return graph_p->getKeyRange(found_range);
1892 }
1893 
1894 
1895 QCPRange
1896 BasePlotWidget::getRangeY(bool &found_range, int index) const
1897 {
1898  QCPGraph *graph_p = graph(index);
1899 
1900  if(graph_p == nullptr)
1901  qFatal("Programming error.");
1902 
1903  return graph_p->getValueRange(found_range);
1904 }
1905 
1906 
1907 QCPRange
1909  RangeType range_type,
1910  bool &found_range) const
1911 {
1912 
1913  // Iterate in all the graphs in this widget and return a QCPRange that has
1914  // its lower member as the greatest lower value of all
1915  // its upper member as the smallest upper value of all
1916 
1917  if(!graphCount())
1918  {
1919  found_range = false;
1920 
1921  return QCPRange(0, 1);
1922  }
1923 
1924  if(graphCount() == 1)
1925  return graph()->getKeyRange(found_range);
1926 
1927  bool found_at_least_one_range = false;
1928 
1929  // Create an invalid range.
1930  QCPRange result_range(QCPRange::minRange + 1, QCPRange::maxRange + 1);
1931 
1932  for(int iter = 0; iter < graphCount(); ++iter)
1933  {
1934  QCPRange temp_range;
1935 
1936  bool found_range_for_iter = false;
1937 
1938  QCPGraph *graph_p = graph(iter);
1939 
1940  // Depending on the axis param, select the key or value range.
1941 
1942  if(axis == Axis::x)
1943  temp_range = graph_p->getKeyRange(found_range_for_iter);
1944  else if(axis == Axis::y)
1945  temp_range = graph_p->getValueRange(found_range_for_iter);
1946  else
1947  qFatal("Cannot reach this point. Programming error.");
1948 
1949  // Was a range found for the iterated graph ? If not skip this
1950  // iteration.
1951 
1952  if(!found_range_for_iter)
1953  continue;
1954 
1955  // While the innermost_range is invalid, we need to seed it with a good
1956  // one. So check this.
1957 
1958  if(!QCPRange::validRange(result_range))
1959  qFatal("The obtained range is invalid !");
1960 
1961  // At this point we know the obtained range is OK.
1962  result_range = temp_range;
1963 
1964  // We found at least one valid range!
1965  found_at_least_one_range = true;
1966 
1967  // At this point we have two valid ranges to compare. Depending on
1968  // range_type, we need to perform distinct comparisons.
1969 
1970  if(range_type == RangeType::innermost)
1971  {
1972  if(temp_range.lower > result_range.lower)
1973  result_range.lower = temp_range.lower;
1974  if(temp_range.upper < result_range.upper)
1975  result_range.upper = temp_range.upper;
1976  }
1977  else if(range_type == RangeType::outermost)
1978  {
1979  if(temp_range.lower < result_range.lower)
1980  result_range.lower = temp_range.lower;
1981  if(temp_range.upper > result_range.upper)
1982  result_range.upper = temp_range.upper;
1983  }
1984  else
1985  qFatal("Cannot reach this point. Programming error.");
1986 
1987  // Continue to next graph, if any.
1988  }
1989  // End of
1990  // for(int iter = 0; iter < graphCount(); ++iter)
1991 
1992  // Let the caller know if we found at least one range.
1993  found_range = found_at_least_one_range;
1994 
1995  return result_range;
1996 }
1997 
1998 
1999 QCPRange
2000 BasePlotWidget::getInnermostRangeX(bool &found_range) const
2001 {
2002 
2003  return getRange(Axis::x, RangeType::innermost, found_range);
2004 }
2005 
2006 
2007 QCPRange
2008 BasePlotWidget::getOutermostRangeX(bool &found_range) const
2009 {
2010  return getRange(Axis::x, RangeType::outermost, found_range);
2011 }
2012 
2013 
2014 QCPRange
2015 BasePlotWidget::getInnermostRangeY(bool &found_range) const
2016 {
2017 
2018  return getRange(Axis::y, RangeType::innermost, found_range);
2019 }
2020 
2021 
2022 QCPRange
2023 BasePlotWidget::getOutermostRangeY(bool &found_range) const
2024 {
2025  return getRange(Axis::y, RangeType::outermost, found_range);
2026 }
2027 
2028 
2029 /// RANGE-related functions
2030 
2031 
2032 /// PLOTTING / REPLOTTING functions
2033 
2034 void
2036 {
2037  // Get the current x lower/upper range, that is, leftmost/rightmost x
2038  // coordinate.
2039  double xLower = xAxis->range().lower;
2040  double xUpper = xAxis->range().upper;
2041 
2042  // Get the current y lower/upper range, that is, bottommost/topmost y
2043  // coordinate.
2044  double yLower = yAxis->range().lower;
2045  double yUpper = yAxis->range().upper;
2046 
2047  // This function is called only when the user has clicked on the x/y axis or
2048  // when the user has dragged the left mouse button with the Ctrl key
2049  // modifier. The m_context.m_wasClickOnXAxis is then simulated in the mouse
2050  // move handler. So we need to test which axis was clicked-on.
2051 
2053  {
2054 
2055  // We are changing the range of the X axis.
2056 
2057  // What is the x delta ?
2058  double xDelta =
2060 
2061  // If xDelta is < 0, the we were dragging from right to left, we are
2062  // compressing the view on the x axis, by adding new data to the right
2063  // hand size of the graph. So we add xDelta to the upper bound of the
2064  // range. Otherwise we are uncompressing the view on the x axis and
2065  // remove the xDelta from the upper bound of the range. This is why we
2066  // have the
2067  // '-'
2068  // and not '+' below;
2069 
2070  // qDebug() << "Setting xaxis:" << xLower << "--" << xUpper - xDelta;
2071 
2072  xAxis->setRange(xLower, xUpper - xDelta);
2073  }
2074  // End of
2075  // if(m_context.m_wasClickOnXAxis)
2076  else // that is, if(m_context.m_wasClickOnYAxis)
2077  {
2078  // We are changing the range of the Y axis.
2079 
2080  // What is the y delta ?
2081  double yDelta =
2083 
2084  // See above for an explanation of the computation.
2085 
2086  yAxis->setRange(yLower, yUpper - yDelta);
2087 
2088  // Old version
2089  // if(yDelta < 0)
2090  //{
2091  //// The dragging operation was from top to bottom, we are enlarging
2092  //// the range (thus, we are unzooming the view, since the widget
2093  //// always has the same size).
2094 
2095  // yAxis->setRange(yLower, yUpper + fabs(yDelta));
2096  //}
2097  // else
2098  //{
2099  //// The dragging operation was from bottom to top, we are reducing
2100  //// the range (thus, we are zooming the view, since the widget
2101  //// always has the same size).
2102 
2103  // yAxis->setRange(yLower, yUpper - fabs(yDelta));
2104  //}
2105  }
2106  // End of
2107  // else // that is, if(m_context.m_wasClickOnYAxis)
2108 
2109  // Update the context with the current axes ranges
2110 
2112 
2114 
2115  replot();
2116 }
2117 
2118 
2119 void
2121 {
2122 
2123  // double sorted_start_drag_point_x =
2124  // std::min(m_context.m_startDragPoint.x(), m_context.m_currentDragPoint.x());
2125 
2126  // xAxis->setRange(sorted_start_drag_point_x,
2127  // sorted_start_drag_point_x + fabs(m_context.m_xDelta));
2128 
2129  xAxis->setRange(
2131 
2132  // Note that the y axis should be rescaled from current lower value to new
2133  // upper value matching the y-axis position of the cursor when the mouse
2134  // button was released.
2135 
2136  yAxis->setRange(xAxis->range().lower,
2137  std::max<double>(m_context.m_yRegionRangeStart,
2139 
2140  // qDebug() << "xaxis:" << xAxis->range().lower << "-" <<
2141  // xAxis->range().upper
2142  //<< "yaxis:" << yAxis->range().lower << "-" << yAxis->range().upper;
2143 
2145 
2148 
2149  replot();
2150 }
2151 
2152 
2153 void
2155 {
2156 
2157  // Use the m_context.m_xRegionRangeStart/End values, but we need to sort the
2158  // values before using them, because now we want to really have the lower x
2159  // value. Simply craft a QCPRange that will swap the values if lower is not
2160  // < than upper QCustomPlot calls this normalization).
2161 
2162  xAxis->setRange(
2164 
2165  yAxis->setRange(
2167 
2169 
2172 
2173  replot();
2174 }
2175 
2176 
2177 void
2179 {
2180  qDebug();
2181 
2182  // Sanity check
2184  qFatal(
2185  "This function can only be called if the mouse click was on one of the "
2186  "axes");
2187 
2189  {
2190  xAxis->setRange(m_context.m_xRange.lower - m_context.m_xDelta,
2192  }
2193 
2195  {
2196  yAxis->setRange(m_context.m_yRange.lower - m_context.m_yDelta,
2198  }
2199 
2201 
2202  // qDebug() << "The updated context:" << m_context.toString();
2203 
2204  // We cannot store the new ranges in the history, because the pan operation
2205  // involved a huge quantity of micro-movements elicited upon each mouse move
2206  // cursor event so we would have a huge history.
2207  // updateAxesRangeHistory();
2208 
2209  // Now that the context has the right range values, we can emit the
2210  // signal that will be used by this plot widget users, typically to
2211  // abide by the x/y range lock required by the user.
2212 
2214 
2215  replot();
2216 }
2217 
2218 
2219 void
2221  QCPRange yAxisRange,
2222  Axis axis)
2223 {
2224  // qDebug() << "With axis:" << (int)axis;
2225 
2226  if(static_cast<int>(axis) & static_cast<int>(Axis::x))
2227  {
2228  xAxis->setRange(xAxisRange.lower, xAxisRange.upper);
2229  }
2230 
2231  if(static_cast<int>(axis) & static_cast<int>(Axis::y))
2232  {
2233  yAxis->setRange(yAxisRange.lower, yAxisRange.upper);
2234  }
2235 
2236  // We do not want to update the history, because there would be way too
2237  // much history items, since this function is called upon mouse moving
2238  // handling and not only during mouse release events.
2239  // updateAxesRangeHistory();
2240 
2241  replot();
2242 }
2243 
2244 
2245 void
2246 BasePlotWidget::replotWithAxisRangeX(double lower, double upper)
2247 {
2248  // qDebug();
2249 
2250  xAxis->setRange(lower, upper);
2251 
2252  replot();
2253 }
2254 
2255 
2256 void
2257 BasePlotWidget::replotWithAxisRangeY(double lower, double upper)
2258 {
2259  // qDebug();
2260 
2261  yAxis->setRange(lower, upper);
2262 
2263  replot();
2264 }
2265 
2266 /// PLOTTING / REPLOTTING functions
2267 
2268 
2269 /// PLOT ITEMS : TRACER TEXT ITEMS...
2270 
2271 //! Hide the selection line, the xDelta text and the zoom rectangle items.
2272 void
2274 {
2275  mp_xDeltaTextItem->setVisible(false);
2276  mp_yDeltaTextItem->setVisible(false);
2277 
2278  // mp_zoomRectItem->setVisible(false);
2280 
2281  // Force a replot to make sure the action is immediately visible by the
2282  // user, even without moving the mouse.
2283  replot();
2284 }
2285 
2286 
2287 //! Show the traces (vertical and horizontal).
2288 void
2290 {
2291  m_shouldTracersBeVisible = true;
2292 
2293  mp_vPosTracerItem->setVisible(true);
2294  mp_hPosTracerItem->setVisible(true);
2295 
2296  mp_vStartTracerItem->setVisible(true);
2297  mp_vEndTracerItem->setVisible(true);
2298 
2299  // Force a replot to make sure the action is immediately visible by the
2300  // user, even without moving the mouse.
2301  replot();
2302 }
2303 
2304 
2305 //! Hide the traces (vertical and horizontal).
2306 void
2308 {
2309  m_shouldTracersBeVisible = false;
2310  mp_hPosTracerItem->setVisible(false);
2311  mp_vPosTracerItem->setVisible(false);
2312 
2313  mp_vStartTracerItem->setVisible(false);
2314  mp_vEndTracerItem->setVisible(false);
2315 
2316  // Force a replot to make sure the action is immediately visible by the
2317  // user, even without moving the mouse.
2318  replot();
2319 }
2320 
2321 
2322 void
2324  bool for_integration)
2325 {
2326  // The user has dragged the mouse left button on the graph, which means he
2327  // is willing to draw a selection rectangle, either for zooming-in or for
2328  // integration.
2329 
2330  if(mp_xDeltaTextItem != nullptr)
2331  mp_xDeltaTextItem->setVisible(false);
2332  if(mp_yDeltaTextItem != nullptr)
2333  mp_yDeltaTextItem->setVisible(false);
2334 
2335  // Ensure the right selection rectangle is drawn.
2336 
2337  updateSelectionRectangle(as_line_segment, for_integration);
2338 
2339  // Note that if we draw a zoom rectangle, then we are certainly not
2340  // measuring anything. So set the boolean value to false so that the user of
2341  // this widget or derived classes know that there is nothing to perform upon
2342  // (like deconvolution, for example).
2343 
2345 
2346  // Also remove the delta value from the pipeline by sending a simple
2347  // distance without measurement signal.
2348 
2349  emit xAxisMeasurementSignal(m_context, false);
2350 
2351  replot();
2352 }
2353 
2354 
2355 void
2357 {
2358  // The user is dragging the mouse over the graph and we want them to know what
2359  // is the x delta value, that is the span between the point at the start of
2360  // the drag and the current drag position.
2361 
2362  // FIXME: is this still true?
2363  //
2364  // We do not want to show the position markers because the only horiontal
2365  // line to be visible must be contained between the start and end vertiacal
2366  // tracer items.
2367  if(mp_hPosTracerItem != nullptr)
2368  mp_hPosTracerItem->setVisible(false);
2369  if(mp_vPosTracerItem != nullptr)
2370  mp_vPosTracerItem->setVisible(false);
2371 
2372  // We want to draw the text in the middle position of the leftmost-rightmost
2373  // point, even with skewed rectangle selection.
2374 
2375  QPointF leftmost_point = m_context.m_selectionPolygon.getLeftMostPoint();
2376 
2377  // qDebug() << "leftmost_point:" << leftmost_point;
2378 
2379  QPointF rightmost_point = m_context.m_selectionPolygon.getRightMostPoint();
2380 
2381  // qDebug() << "rightmost_point:" << rightmost_point;
2382 
2383  double x_axis_center_position =
2384  leftmost_point.x() + (rightmost_point.x() - leftmost_point.x()) / 2;
2385 
2386  // qDebug() << "x_axis_center_position:" << x_axis_center_position;
2387 
2388  // We want the text to print inside the rectangle, always at the current drag
2389  // point so the eye can follow the delta value while looking where to drag the
2390  // mouse. To position the text inside the rectangle, we need to know what is
2391  // the drag direction.
2392 
2393  // Set aside a point instance to store the pixel coordinates of the text.
2394  QPointF pixel_coordinates;
2395 
2396  // What is the distance between the rectangle line at current drag point and
2397  // the text itself.
2398  int pixels_away_from_line = 15;
2399 
2400  // ATTENTION: the pixel coordinates for the vertical direction go in reverse
2401  // order with respect to the y axis values !!! That is pixel(0,0) is top left
2402  // of the graph.
2403  if(static_cast<int>(m_context.m_dragDirections) &
2404  static_cast<int>(DragDirections::TOP_TO_BOTTOM))
2405  {
2406  // We need to print inside the rectangle, that is pixels_above_line pixels
2407  // to the bottom, so with pixel y value decremented of that
2408  // pixels_above_line value (one would have expected to increment that
2409  // value, along the y axis, but the coordinates in pixel go in reverse
2410  // order).
2411 
2412  pixels_away_from_line *= -1;
2413  }
2414 
2415  double y_axis_pixel_coordinate =
2416  yAxis->coordToPixel(m_context.m_currentDragPoint.y());
2417 
2418  double y_axis_modified_pixel_coordinate =
2419  y_axis_pixel_coordinate + pixels_away_from_line;
2420 
2421  pixel_coordinates.setX(x_axis_center_position);
2422  pixel_coordinates.setY(y_axis_modified_pixel_coordinate);
2423 
2424  // Now convert back to graph coordinates.
2425 
2426  QPointF graph_coordinates(xAxis->pixelToCoord(pixel_coordinates.x()),
2427  yAxis->pixelToCoord(pixel_coordinates.y()));
2428  if(mp_xDeltaTextItem != nullptr)
2429  {
2430  mp_xDeltaTextItem->position->setCoords(x_axis_center_position,
2431  graph_coordinates.y());
2432  mp_xDeltaTextItem->setText(
2433  QString("%1").arg(m_context.m_xDelta, 0, 'f', 3));
2434  mp_xDeltaTextItem->setFont(QFont(font().family(), 9));
2435  mp_xDeltaTextItem->setVisible(true);
2436  }
2437 
2438  // Set the boolean to true so that derived widgets know that something is
2439  // being measured, and they can act accordingly, for example by computing
2440  // deconvolutions in a mass spectrum.
2442 
2443  replot();
2444 
2445  // Let the caller know that we were measuring something.
2446  emit xAxisMeasurementSignal(m_context, true);
2447 
2448  return;
2449 }
2450 
2451 
2452 void
2454 {
2456  return;
2457 
2458  // The user is dragging the mouse over the graph and we want them to know what
2459  // is the y delta value, that is the span between the point at the top of
2460  // the selection polygon and the point at its bottom.
2461 
2462  // FIXME: is this still true?
2463  //
2464  // We do not want to show the position markers because the only horiontal
2465  // line to be visible must be contained between the start and end vertiacal
2466  // tracer items.
2467  mp_hPosTracerItem->setVisible(false);
2468  mp_vPosTracerItem->setVisible(false);
2469 
2470  // We want to draw the text in the middle position of the leftmost-rightmost
2471  // point, even with skewed rectangle selection.
2472 
2473  QPointF leftmost_point = m_context.m_selectionPolygon.getLeftMostPoint();
2474  QPointF topmost_point = m_context.m_selectionPolygon.getTopMostPoint();
2475 
2476  // qDebug() << "leftmost_point:" << leftmost_point;
2477 
2478  QPointF rightmost_point = m_context.m_selectionPolygon.getRightMostPoint();
2479  QPointF bottommost_point = m_context.m_selectionPolygon.getBottomMostPoint();
2480 
2481  // qDebug() << "rightmost_point:" << rightmost_point;
2482 
2483  double x_axis_center_position =
2484  leftmost_point.x() + (rightmost_point.x() - leftmost_point.x()) / 2;
2485 
2486  double y_axis_center_position =
2487  bottommost_point.y() + (topmost_point.y() - bottommost_point.y()) / 2;
2488 
2489  // qDebug() << "x_axis_center_position:" << x_axis_center_position;
2490 
2491  mp_yDeltaTextItem->position->setCoords(x_axis_center_position,
2492  y_axis_center_position);
2493  mp_yDeltaTextItem->setText(QString("%1").arg(m_context.m_yDelta, 0, 'f', 3));
2494  mp_yDeltaTextItem->setFont(QFont(font().family(), 9));
2495  mp_yDeltaTextItem->setVisible(true);
2496  mp_yDeltaTextItem->setRotation(90);
2497 
2498  // Set the boolean to true so that derived widgets know that something is
2499  // being measured, and they can act accordingly, for example by computing
2500  // deconvolutions in a mass spectrum.
2502 
2503  replot();
2504 
2505  // Let the caller know that we were measuring something.
2506  emit xAxisMeasurementSignal(m_context, true);
2507 }
2508 
2509 
2510 void
2512 {
2513 
2514  // We compute signed differentials. If the user does not want the sign,
2515  // fabs(double) is their friend.
2516 
2517  // Compute the xAxis differential:
2518 
2521 
2522  // Same with the Y-axis range:
2523 
2526 
2527  // qDebug() << "xDelta:" << m_context.m_xDelta
2528  //<< "and yDelta:" << m_context.m_yDelta;
2529 
2530  return;
2531 }
2532 
2533 
2534 bool
2536 {
2537  // First get the height of the plot.
2538  double plotHeight = yAxis->range().upper - yAxis->range().lower;
2539 
2540  double heightDiff =
2542 
2543  double heightDiffRatio = (heightDiff / plotHeight) * 100;
2544 
2545  if(heightDiffRatio > 10)
2546  {
2547  // qDebug() << "isVerticalDisplacementAboveThreshold: true";
2548  return true;
2549  }
2550 
2551  // qDebug() << "isVerticalDisplacementAboveThreshold: false";
2552  return false;
2553 }
2554 
2555 
2556 void
2558 {
2559 
2560  // if(for_integration)
2561  // qDebug() << "for_integration:" << for_integration;
2562 
2563  // When we make a linear selection, the selection polygon is a polygon that
2564  // has the following characteristics:
2565  //
2566  // the x range is the linear selection span
2567  //
2568  // the y range is the widest std::min -> std::max possible.
2569 
2570  // This is how the selection polygon logic knows if its is mono-
2571  // two-dimensional.
2572 
2573  // We want the top left point to effectively be the top left point, so check
2574  // the direction of the mouse cursor drag.
2575 
2576  double x_range_start =
2578  double x_range_end =
2580 
2581  double y_position = m_context.m_startDragPoint.y();
2582 
2583  m_context.m_selectionPolygon.set1D(x_range_start, x_range_end);
2584 
2585  // Top line
2586  mp_selectionRectangeLine1->start->setCoords(
2587  QPointF(x_range_start, y_position));
2588  mp_selectionRectangeLine1->end->setCoords(QPointF(x_range_end, y_position));
2589 
2590  // Only if we are drawing a selection rectangle for integration, do we set
2591  // arrow heads to the line.
2592  if(for_integration)
2593  {
2594  mp_selectionRectangeLine1->setHead(QCPLineEnding::esSpikeArrow);
2595  mp_selectionRectangeLine1->setTail(QCPLineEnding::esSpikeArrow);
2596  }
2597  else
2598  {
2599  mp_selectionRectangeLine1->setHead(QCPLineEnding::esNone);
2600  mp_selectionRectangeLine1->setTail(QCPLineEnding::esNone);
2601  }
2602  mp_selectionRectangeLine1->setVisible(true);
2603 
2604  // Right line: does not exist, start and end are the same end point of the top
2605  // line.
2606  mp_selectionRectangeLine2->start->setCoords(QPointF(x_range_end, y_position));
2607  mp_selectionRectangeLine2->end->setCoords(QPointF(x_range_end, y_position));
2608  mp_selectionRectangeLine2->setVisible(false);
2609 
2610  // Bottom line: identical to the top line, but invisible
2611  mp_selectionRectangeLine3->start->setCoords(
2612  QPointF(x_range_start, y_position));
2613  mp_selectionRectangeLine3->end->setCoords(QPointF(x_range_end, y_position));
2614  mp_selectionRectangeLine3->setVisible(false);
2615 
2616  // Left line: does not exist: start and end are the same end point of the top
2617  // line.
2618  mp_selectionRectangeLine4->start->setCoords(QPointF(x_range_end, y_position));
2619  mp_selectionRectangeLine4->end->setCoords(QPointF(x_range_end, y_position));
2620  mp_selectionRectangeLine4->setVisible(false);
2621 }
2622 
2623 
2624 void
2626 {
2627 
2628  // if(for_integration)
2629  // qDebug() << "for_integration:" << for_integration;
2630 
2631  // We are handling a conventional rectangle. Just create four points
2632  // from top left to bottom right. But we want the top left point to be
2633  // effectively the top left point and the bottom point to be the bottom point.
2634  // So we need to try all four direction combinations, left to right or
2635  // converse versus top to bottom or converse.
2636 
2638 
2640  {
2641  // qDebug() << "Dragging from right to left";
2642 
2644  {
2645  // qDebug() << "Dragging from top to bottom";
2646 
2647  // TOP_LEFT_POINT
2652 
2653  // TOP_RIGHT_POINT
2657 
2658  // BOTTOM_RIGHT_POINT
2663 
2664  // BOTTOM_LEFT_POINT
2669  }
2670  // End of
2671  // if(m_context.m_currentDragPoint.y() < m_context.m_startDragPoint.y())
2672  else
2673  {
2674  // qDebug() << "Dragging from bottom to top";
2675 
2676  // TOP_LEFT_POINT
2681 
2682  // TOP_RIGHT_POINT
2687 
2688  // BOTTOM_RIGHT_POINT
2692 
2693  // BOTTOM_LEFT_POINT
2698  }
2699  }
2700  // End of
2701  // if(m_context.m_currentDragPoint.x() < m_context.m_startDragPoint.x())
2702  else
2703  {
2704  // qDebug() << "Dragging from left to right";
2705 
2707  {
2708  // qDebug() << "Dragging from top to bottom";
2709 
2710  // TOP_LEFT_POINT
2714 
2715  // TOP_RIGHT_POINT
2720 
2721  // BOTTOM_RIGHT_POINT
2726 
2727  // BOTTOM_LEFT_POINT
2732  }
2733  else
2734  {
2735  // qDebug() << "Dragging from bottom to top";
2736 
2737  // TOP_LEFT_POINT
2742 
2743  // TOP_RIGHT_POINT
2748 
2749  // BOTTOM_RIGHT_POINT
2754 
2755  // BOTTOM_LEFT_POINT
2759  }
2760  }
2761 
2762  // qDebug() << "Now draw the lines with points:"
2763  //<< m_context.m_selectionPolygon.toString();
2764 
2765  // Top line
2766  mp_selectionRectangeLine1->start->setCoords(
2768  mp_selectionRectangeLine1->end->setCoords(
2770 
2771  // Only if we are drawing a selection rectangle for integration, do we
2772  // set arrow heads to the line.
2773  if(for_integration)
2774  {
2775  mp_selectionRectangeLine1->setHead(QCPLineEnding::esSpikeArrow);
2776  mp_selectionRectangeLine1->setTail(QCPLineEnding::esSpikeArrow);
2777  }
2778  else
2779  {
2780  mp_selectionRectangeLine1->setHead(QCPLineEnding::esNone);
2781  mp_selectionRectangeLine1->setTail(QCPLineEnding::esNone);
2782  }
2783 
2784  mp_selectionRectangeLine1->setVisible(true);
2785 
2786  // Right line
2787  mp_selectionRectangeLine2->start->setCoords(
2789  mp_selectionRectangeLine2->end->setCoords(
2791  mp_selectionRectangeLine2->setVisible(true);
2792 
2793  // Bottom line
2794  mp_selectionRectangeLine3->start->setCoords(
2796  mp_selectionRectangeLine3->end->setCoords(
2798  mp_selectionRectangeLine3->setVisible(true);
2799 
2800  // Left line
2801  mp_selectionRectangeLine4->start->setCoords(
2803  mp_selectionRectangeLine4->end->setCoords(
2805  mp_selectionRectangeLine4->setVisible(true);
2806 }
2807 
2808 
2809 void
2811 {
2812 
2813  // if(for_integration)
2814  // qDebug() << "for_integration:" << for_integration;
2815 
2816  // We are handling a skewed rectangle, that is a rectangle that is
2817  // tilted either to the left or to the right.
2818 
2819  // qDebug() << "m_context.m_selectRectangleWidth: "
2820  //<< m_context.m_selectRectangleWidth;
2821 
2822  // Top line
2823  // start
2824 
2825  // qDebug() << "m_context.m_startDragPoint: " <<
2826  // m_context.m_startDragPoint.x()
2827  //<< "-" << m_context.m_startDragPoint.y();
2828 
2829  // qDebug() << "m_context.m_currentDragPoint: "
2830  //<< m_context.m_currentDragPoint.x() << "-"
2831  //<< m_context.m_currentDragPoint.y();
2832 
2834 
2836  {
2837  // qDebug() << "Dragging from right to left";
2838 
2840  {
2841  // qDebug() << "Dragging from top to bottom";
2842 
2847 
2848  // m_context.m_selRectTopLeftPoint.setX(
2849  // m_context.m_startDragPoint.x() -
2850  // m_context.m_selectRectangleWidth);
2851  // m_context.m_selRectTopLeftPoint.setY(m_context.m_startDragPoint.y());
2852 
2856 
2857  // m_context.m_selRectTopRightPoint.setX(m_context.m_startDragPoint.x());
2858  // m_context.m_selRectTopRightPoint.setY(m_context.m_startDragPoint.y());
2859 
2864 
2865  // m_context.m_selRectBottomRightPoint.setX(
2866  // m_context.m_currentDragPoint.x() +
2867  // m_context.m_selectRectangleWidth);
2868  // m_context.m_selRectBottomRightPoint.setY(
2869  // m_context.m_currentDragPoint.y());
2870 
2875 
2876  // m_context.m_selRectBottomLeftPoint.setX(
2877  // m_context.m_currentDragPoint.x());
2878  // m_context.m_selRectBottomLeftPoint.setY(
2879  // m_context.m_currentDragPoint.y());
2880  }
2881  else
2882  {
2883  // qDebug() << "Dragging from bottom to top";
2884 
2889 
2890  // m_context.m_selRectTopLeftPoint.setX(
2891  // m_context.m_currentDragPoint.x());
2892  // m_context.m_selRectTopLeftPoint.setY(
2893  // m_context.m_currentDragPoint.y());
2894 
2899 
2900  // m_context.m_selRectTopRightPoint.setX(
2901  // m_context.m_currentDragPoint.x() +
2902  // m_context.m_selectRectangleWidth);
2903  // m_context.m_selRectTopRightPoint.setY(
2904  // m_context.m_currentDragPoint.y());
2905 
2906 
2910 
2911  // m_context.m_selRectBottomRightPoint.setX(
2912  // m_context.m_startDragPoint.x());
2913  // m_context.m_selRectBottomRightPoint.setY(
2914  // m_context.m_startDragPoint.y());
2915 
2920 
2921  // m_context.m_selRectBottomLeftPoint.setX(
2922  // m_context.m_startDragPoint.x() -
2923  // m_context.m_selectRectangleWidth);
2924  // m_context.m_selRectBottomLeftPoint.setY(
2925  // m_context.m_startDragPoint.y());
2926  }
2927  }
2928  // End of
2929  // Dragging from right to left.
2930  else
2931  {
2932  // qDebug() << "Dragging from left to right";
2933 
2935  {
2936  // qDebug() << "Dragging from top to bottom";
2937 
2941 
2942  // m_context.m_selRectTopLeftPoint.setX(m_context.m_startDragPoint.x());
2943  // m_context.m_selRectTopLeftPoint.setY(m_context.m_startDragPoint.y());
2944 
2949 
2950  // m_context.m_selRectTopRightPoint.setX(
2951  // m_context.m_startDragPoint.x() +
2952  // m_context.m_selectRectangleWidth);
2953  // m_context.m_selRectTopRightPoint.setY(m_context.m_startDragPoint.y());
2954 
2959 
2960  // m_context.m_selRectBottomRightPoint.setX(
2961  // m_context.m_currentDragPoint.x());
2962  // m_context.m_selRectBottomRightPoint.setY(
2963  // m_context.m_currentDragPoint.y());
2964 
2969 
2970  // m_context.m_selRectBottomLeftPoint.setX(
2971  // m_context.m_currentDragPoint.x() -
2972  // m_context.m_selectRectangleWidth);
2973  // m_context.m_selRectBottomLeftPoint.setY(
2974  // m_context.m_currentDragPoint.y());
2975  }
2976  else
2977  {
2978  // qDebug() << "Dragging from bottom to top";
2979 
2984 
2985  // m_context.m_selRectTopLeftPoint.setX(
2986  // m_context.m_currentDragPoint.x() -
2987  // m_context.m_selectRectangleWidth);
2988  // m_context.m_selRectTopLeftPoint.setY(
2989  // m_context.m_currentDragPoint.y());
2990 
2995 
2996  // m_context.m_selRectTopRightPoint.setX(
2997  // m_context.m_currentDragPoint.x());
2998  // m_context.m_selRectTopRightPoint.setY(
2999  // m_context.m_currentDragPoint.y());
3000 
3005 
3006  // m_context.m_selRectBottomRightPoint.setX(
3007  // m_context.m_startDragPoint.x() +
3008  // m_context.m_selectRectangleWidth);
3009  // m_context.m_selRectBottomRightPoint.setY(
3010  // m_context.m_startDragPoint.y());
3011 
3015 
3016  // m_context.m_selRectBottomLeftPoint.setX(
3017  // m_context.m_startDragPoint.x());
3018  // m_context.m_selRectBottomLeftPoint.setY(
3019  // m_context.m_startDragPoint.y());
3020  }
3021  }
3022  // End of Dragging from left to right.
3023 
3024  // qDebug() << "Now draw the lines with points:"
3025  //<< m_context.m_selectionPolygon.toString();
3026 
3027  // Top line
3028  mp_selectionRectangeLine1->start->setCoords(
3030  mp_selectionRectangeLine1->end->setCoords(
3032 
3033  // Only if we are drawing a selection rectangle for integration, do we set
3034  // arrow heads to the line.
3035  if(for_integration)
3036  {
3037  mp_selectionRectangeLine1->setHead(QCPLineEnding::esSpikeArrow);
3038  mp_selectionRectangeLine1->setTail(QCPLineEnding::esSpikeArrow);
3039  }
3040  else
3041  {
3042  mp_selectionRectangeLine1->setHead(QCPLineEnding::esNone);
3043  mp_selectionRectangeLine1->setTail(QCPLineEnding::esNone);
3044  }
3045 
3046  mp_selectionRectangeLine1->setVisible(true);
3047 
3048  // Right line
3049  mp_selectionRectangeLine2->start->setCoords(
3051  mp_selectionRectangeLine2->end->setCoords(
3053  mp_selectionRectangeLine2->setVisible(true);
3054 
3055  // Bottom line
3056  mp_selectionRectangeLine3->start->setCoords(
3058  mp_selectionRectangeLine3->end->setCoords(
3060  mp_selectionRectangeLine3->setVisible(true);
3061 
3062  // Left line
3063  mp_selectionRectangeLine4->end->setCoords(
3065  mp_selectionRectangeLine4->start->setCoords(
3067  mp_selectionRectangeLine4->setVisible(true);
3068 }
3069 
3070 
3071 void
3073  bool for_integration)
3074 {
3075 
3076  // qDebug() << "as_line_segment:" << as_line_segment;
3077  // qDebug() << "for_integration:" << for_integration;
3078 
3079  // We now need to construct the selection rectangle, either for zoom or for
3080  // integration.
3081 
3082  // There are two situations :
3083  //
3084  // 1. if the rectangle should look like a line segment
3085  //
3086  // 2. if the rectangle should actually look like a rectangle. In this case,
3087  // there are two sub-situations:
3088  //
3089  // a. if the S key is down, then the rectangle is
3090  // skewed, that is its vertical sides are not parallel to the y axis.
3091  //
3092  // b. otherwise the rectangle is conventional.
3093 
3094  if(as_line_segment)
3095  {
3096  update1DSelectionRectangle(for_integration);
3097  }
3098  else
3099  {
3100  if(!(m_context.m_keyboardModifiers & Qt::AltModifier))
3101  {
3102  update2DSelectionRectangleSquare(for_integration);
3103  }
3104  else if(m_context.m_keyboardModifiers & Qt::AltModifier)
3105  {
3106  update2DSelectionRectangleSkewed(for_integration);
3107  }
3108  }
3109 
3110  // This code automatically sorts the ranges (range start is always less than
3111  // range end) even if the user actually selects from high to low (right to
3112  // left or bottom to top). This has implications in code that uses the
3113  // m_context data to perform some computations. This is why it is important
3114  // that m_dragDirections be set correctly to establish where the current drag
3115  // point is actually located (at which point).
3116 
3121 
3126 
3127  // At this point, draw the text describing the widths.
3128 
3129  // We want the x-delta on the bottom of the rectangle, inside it
3130  // and the y-delta on the vertical side of the rectangle, inside it.
3131 
3132  // Draw the selection width text
3134 }
3135 
3136 void
3138 {
3139  mp_selectionRectangeLine1->setVisible(false);
3140  mp_selectionRectangeLine2->setVisible(false);
3141  mp_selectionRectangeLine3->setVisible(false);
3142  mp_selectionRectangeLine4->setVisible(false);
3143 
3144  if(reset_values)
3145  {
3147  }
3148 }
3149 
3150 
3151 void
3153 {
3155 }
3156 
3157 
3160 {
3161  // There are four lines that make the selection polygon. We want to know
3162  // which lines are visible.
3163 
3164  int current_selection_polygon = static_cast<int>(PolygonType::NOT_SET);
3165 
3166  if(mp_selectionRectangeLine1->visible())
3167  {
3168  current_selection_polygon |= static_cast<int>(PolygonType::TOP_LINE);
3169  // qDebug() << "current_selection_polygon:" << current_selection_polygon;
3170  }
3171  if(mp_selectionRectangeLine2->visible())
3172  {
3173  current_selection_polygon |= static_cast<int>(PolygonType::RIGHT_LINE);
3174  // qDebug() << "current_selection_polygon:" << current_selection_polygon;
3175  }
3176  if(mp_selectionRectangeLine3->visible())
3177  {
3178  current_selection_polygon |= static_cast<int>(PolygonType::BOTTOM_LINE);
3179  // qDebug() << "current_selection_polygon:" << current_selection_polygon;
3180  }
3181  if(mp_selectionRectangeLine4->visible())
3182  {
3183  current_selection_polygon |= static_cast<int>(PolygonType::LEFT_LINE);
3184  // qDebug() << "current_selection_polygon:" << current_selection_polygon;
3185  }
3186 
3187  // qDebug() << "returning visibility:" << current_selection_polygon;
3188 
3189  return static_cast<PolygonType>(current_selection_polygon);
3190 }
3191 
3192 
3193 bool
3195 {
3196  // Sanity check
3197  int check = 0;
3198 
3199  check += mp_selectionRectangeLine1->visible();
3200  check += mp_selectionRectangeLine2->visible();
3201  check += mp_selectionRectangeLine3->visible();
3202  check += mp_selectionRectangeLine4->visible();
3203 
3204  if(check > 0)
3205  return true;
3206 
3207  return false;
3208 }
3209 
3210 
3211 void
3213 {
3214  // qDebug() << "Setting focus to the QCustomPlot:" << this;
3215 
3216  QCustomPlot::setFocus();
3217 
3218  // qDebug() << "Emitting setFocusSignal().";
3219 
3220  emit setFocusSignal();
3221 }
3222 
3223 
3224 //! Redraw the background of the \p focusedPlotWidget plot widget.
3225 void
3226 BasePlotWidget::redrawPlotBackground(QWidget *focusedPlotWidget)
3227 {
3228  if(focusedPlotWidget == nullptr)
3229  throw ExceptionNotPossible(
3230  "baseplotwidget.cpp @ redrawPlotBackground(QWidget *focusedPlotWidget "
3231  "-- "
3232  "ERROR focusedPlotWidget cannot be nullptr.");
3233 
3234  if(dynamic_cast<QWidget *>(this) != focusedPlotWidget)
3235  {
3236  // The focused widget is not *this widget. We should make sure that
3237  // we were not the one that had the focus, because in this case we
3238  // need to redraw an unfocused background.
3239 
3240  axisRect()->setBackground(m_unfocusedBrush);
3241  }
3242  else
3243  {
3244  axisRect()->setBackground(m_focusedBrush);
3245  }
3246 
3247  replot();
3248 }
3249 
3250 
3251 void
3253 {
3254  m_context.m_xRange = QCPRange(xAxis->range().lower, xAxis->range().upper);
3255  m_context.m_yRange = QCPRange(yAxis->range().lower, yAxis->range().upper);
3256 
3257  // qDebug() << "The new updated context: " << m_context.toString();
3258 }
3259 
3260 
3261 const BasePlotContext &
3263 {
3264  return m_context;
3265 }
3266 
3267 
3268 } // 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