| 1 | /**************************************************************************** |
| 2 | ** |
| 3 | ** Copyright (C) 2016 The Qt Company Ltd. |
| 4 | ** Contact: https://www.qt.io/licensing/ |
| 5 | ** |
| 6 | ** This file is part of the Qt Charts module of the Qt Toolkit. |
| 7 | ** |
| 8 | ** $QT_BEGIN_LICENSE:GPL$ |
| 9 | ** Commercial License Usage |
| 10 | ** Licensees holding valid commercial Qt licenses may use this file in |
| 11 | ** accordance with the commercial license agreement provided with the |
| 12 | ** Software or, alternatively, in accordance with the terms contained in |
| 13 | ** a written agreement between you and The Qt Company. For licensing terms |
| 14 | ** and conditions see https://www.qt.io/terms-conditions. For further |
| 15 | ** information use the contact form at https://www.qt.io/contact-us. |
| 16 | ** |
| 17 | ** GNU General Public License Usage |
| 18 | ** Alternatively, this file may be used under the terms of the GNU |
| 19 | ** General Public License version 3 or (at your option) any later version |
| 20 | ** approved by the KDE Free Qt Foundation. The licenses are as published by |
| 21 | ** the Free Software Foundation and appearing in the file LICENSE.GPL3 |
| 22 | ** included in the packaging of this file. Please review the following |
| 23 | ** information to ensure the GNU General Public License requirements will |
| 24 | ** be met: https://www.gnu.org/licenses/gpl-3.0.html. |
| 25 | ** |
| 26 | ** $QT_END_LICENSE$ |
| 27 | ** |
| 28 | ****************************************************************************/ |
| 29 | |
| 30 | #include <QtCharts/QCandlestickModelMapper> |
| 31 | #include <QtCharts/QCandlestickSeries> |
| 32 | #include <QtCharts/QCandlestickSet> |
| 33 | #include <QtCore/QAbstractItemModel> |
| 34 | #include <private/qcandlestickmodelmapper_p.h> |
| 35 | |
| 36 | #include <algorithm> |
| 37 | |
| 38 | QT_CHARTS_BEGIN_NAMESPACE |
| 39 | |
| 40 | /*! |
| 41 | \class QCandlestickModelMapper |
| 42 | \since 5.8 |
| 43 | \inmodule QtCharts |
| 44 | \brief Abstract model mapper class for candlestick series. |
| 45 | |
| 46 | Model mappers allow the use of a QAbstractItemModel-derived model as a data source for a chart |
| 47 | series, creating a connection between a QCandlestickSeries and the model object. A model mapper |
| 48 | maintains an equal size across all \l {QCandlestickSet} {QCandlestickSets}. |
| 49 | |
| 50 | \note The model used must support adding and removing rows/columns and modifying the data of the |
| 51 | cells. |
| 52 | */ |
| 53 | |
| 54 | /*! |
| 55 | \property QCandlestickModelMapper::model |
| 56 | \brief Defines the model that is used by the mapper. |
| 57 | */ |
| 58 | |
| 59 | /*! |
| 60 | \property QCandlestickModelMapper::series |
| 61 | \brief Defines the QCandlestickSeries object that is used by the mapper. |
| 62 | |
| 63 | \note All data in the series is discarded when it is set to the mapper. When a new series is |
| 64 | specified, the old series is disconnected (preserving its data). |
| 65 | */ |
| 66 | |
| 67 | /*! |
| 68 | \fn Qt::Orientation QCandlestickModelMapper::orientation() const |
| 69 | Returns the orientation that is used when QCandlestickModelMapper accesses the model. This |
| 70 | determines whether the consecutive values of the set are read from rows (Qt::Horizontal) or from |
| 71 | columns (Qt::Vertical). |
| 72 | */ |
| 73 | |
| 74 | /*! |
| 75 | \fn void QCandlestickModelMapper::modelReplaced() |
| 76 | \brief Emitted when the model, to which the mapper is connected, has changed. |
| 77 | \sa model |
| 78 | */ |
| 79 | |
| 80 | /*! |
| 81 | \fn void QCandlestickModelMapper::seriesReplaced() |
| 82 | \brief Emitted when the series to which mapper is connected to has changed. |
| 83 | \sa series |
| 84 | */ |
| 85 | |
| 86 | /*! |
| 87 | Constructs a model mapper object as a child of \a parent. |
| 88 | */ |
| 89 | QCandlestickModelMapper::QCandlestickModelMapper(QObject *parent) |
| 90 | : QObject(parent), |
| 91 | d_ptr(new QCandlestickModelMapperPrivate(this)) |
| 92 | { |
| 93 | } |
| 94 | |
| 95 | void QCandlestickModelMapper::setModel(QAbstractItemModel *model) |
| 96 | { |
| 97 | Q_D(QCandlestickModelMapper); |
| 98 | |
| 99 | if (d->m_model == model) |
| 100 | return; |
| 101 | |
| 102 | if (d->m_model) |
| 103 | disconnect(sender: d->m_model, signal: 0, receiver: d, member: 0); |
| 104 | |
| 105 | d->m_model = model; |
| 106 | emit modelReplaced(); |
| 107 | |
| 108 | if (!d->m_model) |
| 109 | return; |
| 110 | |
| 111 | d->initializeCandlestickFromModel(); |
| 112 | // connect signals from the model |
| 113 | connect(sender: d->m_model, SIGNAL(modelReset()), receiver: d, SLOT(initializeCandlestickFromModel())); |
| 114 | connect(sender: d->m_model, SIGNAL(dataChanged(QModelIndex, QModelIndex)), |
| 115 | receiver: d, SLOT(modelDataUpdated(QModelIndex, QModelIndex))); |
| 116 | connect(sender: d->m_model, SIGNAL(headerDataChanged(Qt::Orientation, int, int)), |
| 117 | receiver: d, SLOT(modelHeaderDataUpdated(Qt::Orientation, int, int))); |
| 118 | connect(sender: d->m_model, SIGNAL(rowsInserted(QModelIndex, int, int)), |
| 119 | receiver: d, SLOT(modelRowsInserted(QModelIndex, int, int))); |
| 120 | connect(sender: d->m_model, SIGNAL(rowsRemoved(QModelIndex, int, int)), |
| 121 | receiver: d, SLOT(modelRowsRemoved(QModelIndex, int, int))); |
| 122 | connect(sender: d->m_model, SIGNAL(columnsInserted(QModelIndex, int, int)), |
| 123 | receiver: d, SLOT(modelColumnsInserted(QModelIndex, int, int))); |
| 124 | connect(sender: d->m_model, SIGNAL(columnsRemoved(QModelIndex, int, int)), |
| 125 | receiver: d, SLOT(modelColumnsRemoved(QModelIndex, int, int))); |
| 126 | connect(sender: d->m_model, SIGNAL(destroyed()), receiver: d, SLOT(modelDestroyed())); |
| 127 | } |
| 128 | |
| 129 | QAbstractItemModel *QCandlestickModelMapper::model() const |
| 130 | { |
| 131 | Q_D(const QCandlestickModelMapper); |
| 132 | |
| 133 | return d->m_model; |
| 134 | } |
| 135 | |
| 136 | void QCandlestickModelMapper::setSeries(QCandlestickSeries *series) |
| 137 | { |
| 138 | Q_D(QCandlestickModelMapper); |
| 139 | |
| 140 | if (d->m_series == series) |
| 141 | return; |
| 142 | |
| 143 | if (d->m_series) |
| 144 | disconnect(sender: d->m_series, signal: 0, receiver: d, member: 0); |
| 145 | |
| 146 | d->m_series = series; |
| 147 | emit seriesReplaced(); |
| 148 | |
| 149 | if (!d->m_series) |
| 150 | return; |
| 151 | |
| 152 | d->initializeCandlestickFromModel(); |
| 153 | // connect the signals from the series |
| 154 | connect(sender: d->m_series, SIGNAL(candlestickSetsAdded(QList<QCandlestickSet *>)), |
| 155 | receiver: d, SLOT(candlestickSetsAdded(QList<QCandlestickSet *>))); |
| 156 | connect(sender: d->m_series, SIGNAL(candlestickSetsRemoved(QList<QCandlestickSet*>)), |
| 157 | receiver: d, SLOT(candlestickSetsRemoved(QList<QCandlestickSet *>))); |
| 158 | connect(sender: d->m_series, SIGNAL(destroyed()), receiver: d, SLOT(seriesDestroyed())); |
| 159 | } |
| 160 | |
| 161 | QCandlestickSeries *QCandlestickModelMapper::series() const |
| 162 | { |
| 163 | Q_D(const QCandlestickModelMapper); |
| 164 | |
| 165 | return d->m_series; |
| 166 | } |
| 167 | |
| 168 | /*! |
| 169 | Sets the row/column of the model that contains the \a timestamp values of the sets in the |
| 170 | series. Default value is -1 (invalid mapping). |
| 171 | */ |
| 172 | void QCandlestickModelMapper::setTimestamp(int timestamp) |
| 173 | { |
| 174 | Q_D(QCandlestickModelMapper); |
| 175 | |
| 176 | timestamp = qMax(a: timestamp, b: -1); |
| 177 | |
| 178 | if (d->m_timestamp == timestamp) |
| 179 | return; |
| 180 | |
| 181 | d->m_timestamp = timestamp; |
| 182 | emit d->timestampChanged(); |
| 183 | d->initializeCandlestickFromModel(); |
| 184 | } |
| 185 | |
| 186 | /*! |
| 187 | Returns the row/column of the model that contains the timestamp values of the sets in the |
| 188 | series. Default value is -1 (invalid mapping). |
| 189 | */ |
| 190 | int QCandlestickModelMapper::timestamp() const |
| 191 | { |
| 192 | Q_D(const QCandlestickModelMapper); |
| 193 | |
| 194 | return d->m_timestamp; |
| 195 | } |
| 196 | |
| 197 | /*! |
| 198 | Sets the row/column of the model that contains the \a open values of the sets in the series. |
| 199 | Default value is -1 (invalid mapping). |
| 200 | */ |
| 201 | void QCandlestickModelMapper::setOpen(int open) |
| 202 | { |
| 203 | Q_D(QCandlestickModelMapper); |
| 204 | |
| 205 | open = qMax(a: open, b: -1); |
| 206 | |
| 207 | if (d->m_open == open) |
| 208 | return; |
| 209 | |
| 210 | d->m_open = open; |
| 211 | emit d->openChanged(); |
| 212 | d->initializeCandlestickFromModel(); |
| 213 | } |
| 214 | |
| 215 | /*! |
| 216 | Returns the row/column of the model that contains the open values of the sets in the series. |
| 217 | Default value is -1 (invalid mapping). |
| 218 | */ |
| 219 | int QCandlestickModelMapper::open() const |
| 220 | { |
| 221 | Q_D(const QCandlestickModelMapper); |
| 222 | |
| 223 | return d->m_open; |
| 224 | } |
| 225 | |
| 226 | /*! |
| 227 | Sets the row/column of the model that contains the \a high values of the sets in the series. |
| 228 | Default value is -1 (invalid mapping). |
| 229 | */ |
| 230 | void QCandlestickModelMapper::setHigh(int high) |
| 231 | { |
| 232 | Q_D(QCandlestickModelMapper); |
| 233 | |
| 234 | high = qMax(a: high, b: -1); |
| 235 | |
| 236 | if (d->m_high == high) |
| 237 | return; |
| 238 | |
| 239 | d->m_high = high; |
| 240 | emit d->highChanged(); |
| 241 | d->initializeCandlestickFromModel(); |
| 242 | } |
| 243 | |
| 244 | /*! |
| 245 | Returns the row/column of the model that contains the high values of the sets in the series. |
| 246 | Default value is -1 (invalid mapping). |
| 247 | */ |
| 248 | int QCandlestickModelMapper::high() const |
| 249 | { |
| 250 | Q_D(const QCandlestickModelMapper); |
| 251 | |
| 252 | return d->m_high; |
| 253 | } |
| 254 | |
| 255 | /*! |
| 256 | Sets the row/column of the model that contains the \a low values of the sets in the series. |
| 257 | Default value is -1 (invalid mapping). |
| 258 | */ |
| 259 | void QCandlestickModelMapper::setLow(int low) |
| 260 | { |
| 261 | Q_D(QCandlestickModelMapper); |
| 262 | |
| 263 | low = qMax(a: low, b: -1); |
| 264 | |
| 265 | if (d->m_low == low) |
| 266 | return; |
| 267 | |
| 268 | d->m_low = low; |
| 269 | emit d->lowChanged(); |
| 270 | d->initializeCandlestickFromModel(); |
| 271 | } |
| 272 | |
| 273 | /*! |
| 274 | Returns the row/column of the model that contains the low values of the sets in the series. |
| 275 | Default value is -1 (invalid mapping). |
| 276 | */ |
| 277 | int QCandlestickModelMapper::low() const |
| 278 | { |
| 279 | Q_D(const QCandlestickModelMapper); |
| 280 | |
| 281 | return d->m_low; |
| 282 | } |
| 283 | |
| 284 | /*! |
| 285 | Sets the row/column of the model that contains the \a close values of the sets in the series. |
| 286 | Default value is -1 (invalid mapping). |
| 287 | */ |
| 288 | void QCandlestickModelMapper::setClose(int close) |
| 289 | { |
| 290 | Q_D(QCandlestickModelMapper); |
| 291 | |
| 292 | close = qMax(a: close, b: -1); |
| 293 | |
| 294 | if (d->m_close == close) |
| 295 | return; |
| 296 | |
| 297 | d->m_close = close; |
| 298 | emit d->closeChanged(); |
| 299 | d->initializeCandlestickFromModel(); |
| 300 | } |
| 301 | |
| 302 | /*! |
| 303 | Returns the row/column of the model that contains the close values of the sets in the series. |
| 304 | Default value is -1 (invalid mapping). |
| 305 | */ |
| 306 | int QCandlestickModelMapper::close() const |
| 307 | { |
| 308 | Q_D(const QCandlestickModelMapper); |
| 309 | |
| 310 | return d->m_close; |
| 311 | } |
| 312 | |
| 313 | /*! |
| 314 | Sets the section of the model that is used as the data source for the first candlestick set. |
| 315 | Parameter \a firstSetSection specifies the section of the model. Default value is -1. |
| 316 | */ |
| 317 | void QCandlestickModelMapper::setFirstSetSection(int firstSetSection) |
| 318 | { |
| 319 | Q_D(QCandlestickModelMapper); |
| 320 | |
| 321 | firstSetSection = qMax(a: firstSetSection, b: -1); |
| 322 | |
| 323 | if (d->m_firstSetSection == firstSetSection) |
| 324 | return; |
| 325 | |
| 326 | d->m_firstSetSection = firstSetSection; |
| 327 | emit d->firstSetSectionChanged(); |
| 328 | d->initializeCandlestickFromModel(); |
| 329 | } |
| 330 | |
| 331 | /*! |
| 332 | Returns the section of the model that is used as the data source for the first candlestick set. |
| 333 | Default value is -1 (invalid mapping). |
| 334 | */ |
| 335 | int QCandlestickModelMapper::firstSetSection() const |
| 336 | { |
| 337 | Q_D(const QCandlestickModelMapper); |
| 338 | |
| 339 | return d->m_firstSetSection; |
| 340 | } |
| 341 | |
| 342 | /*! |
| 343 | Sets the section of the model that is used as the data source for the last candlestick set. |
| 344 | Parameter \a lastSetSection specifies the section of the model. Default value is -1. |
| 345 | */ |
| 346 | void QCandlestickModelMapper::setLastSetSection(int lastSetSection) |
| 347 | { |
| 348 | Q_D(QCandlestickModelMapper); |
| 349 | |
| 350 | lastSetSection = qMax(a: lastSetSection, b: -1); |
| 351 | |
| 352 | if (d->m_lastSetSection == lastSetSection) |
| 353 | return; |
| 354 | |
| 355 | d->m_lastSetSection = lastSetSection; |
| 356 | emit d->lastSetSectionChanged(); |
| 357 | d->initializeCandlestickFromModel(); |
| 358 | } |
| 359 | |
| 360 | /*! |
| 361 | Returns the section of the model that is used as the data source for the last candlestick set. |
| 362 | Default value is -1 (invalid mapping). |
| 363 | */ |
| 364 | int QCandlestickModelMapper::lastSetSection() const |
| 365 | { |
| 366 | Q_D(const QCandlestickModelMapper); |
| 367 | |
| 368 | return d->m_lastSetSection; |
| 369 | } |
| 370 | |
| 371 | //////////////////////////////////////////////////////////////////////////////////////////////////// |
| 372 | |
| 373 | QCandlestickModelMapperPrivate::QCandlestickModelMapperPrivate(QCandlestickModelMapper *q) |
| 374 | : QObject(q), |
| 375 | m_model(nullptr), |
| 376 | m_series(nullptr), |
| 377 | m_timestamp(-1), |
| 378 | m_open(-1), |
| 379 | m_high(-1), |
| 380 | m_low(-1), |
| 381 | m_close(-1), |
| 382 | m_firstSetSection(-1), |
| 383 | m_lastSetSection(-1), |
| 384 | m_modelSignalsBlock(false), |
| 385 | m_seriesSignalsBlock(false), |
| 386 | q_ptr(q) |
| 387 | { |
| 388 | } |
| 389 | |
| 390 | void QCandlestickModelMapperPrivate::initializeCandlestickFromModel() |
| 391 | { |
| 392 | if (!m_model || !m_series) |
| 393 | return; |
| 394 | |
| 395 | blockSeriesSignals(); |
| 396 | // clear current content |
| 397 | m_series->clear(); |
| 398 | m_sets.clear(); |
| 399 | |
| 400 | // create the initial candlestick sets |
| 401 | QList<QCandlestickSet *> sets; |
| 402 | for (int i = m_firstSetSection; i <= m_lastSetSection; ++i) { |
| 403 | QModelIndex timestampIndex = candlestickModelIndex(section: i, pos: m_timestamp); |
| 404 | QModelIndex openIndex = candlestickModelIndex(section: i, pos: m_open); |
| 405 | QModelIndex highIndex = candlestickModelIndex(section: i, pos: m_high); |
| 406 | QModelIndex lowIndex = candlestickModelIndex(section: i, pos: m_low); |
| 407 | QModelIndex closeIndex = candlestickModelIndex(section: i, pos: m_close); |
| 408 | if (timestampIndex.isValid() |
| 409 | && openIndex.isValid() |
| 410 | && highIndex.isValid() |
| 411 | && lowIndex.isValid() |
| 412 | && closeIndex.isValid()) { |
| 413 | QCandlestickSet *set = new QCandlestickSet(); |
| 414 | set->setTimestamp(m_model->data(index: timestampIndex, role: Qt::DisplayRole).toReal()); |
| 415 | set->setOpen(m_model->data(index: openIndex, role: Qt::DisplayRole).toReal()); |
| 416 | set->setHigh(m_model->data(index: highIndex, role: Qt::DisplayRole).toReal()); |
| 417 | set->setLow(m_model->data(index: lowIndex, role: Qt::DisplayRole).toReal()); |
| 418 | set->setClose(m_model->data(index: closeIndex, role: Qt::DisplayRole).toReal()); |
| 419 | |
| 420 | connect(sender: set, SIGNAL(timestampChanged()), receiver: this, SLOT(candlestickSetChanged())); |
| 421 | connect(sender: set, SIGNAL(openChanged()), receiver: this, SLOT(candlestickSetChanged())); |
| 422 | connect(sender: set, SIGNAL(highChanged()), receiver: this, SLOT(candlestickSetChanged())); |
| 423 | connect(sender: set, SIGNAL(lowChanged()), receiver: this, SLOT(candlestickSetChanged())); |
| 424 | connect(sender: set, SIGNAL(closeChanged()), receiver: this, SLOT(candlestickSetChanged())); |
| 425 | |
| 426 | sets.append(t: set); |
| 427 | } else { |
| 428 | break; |
| 429 | } |
| 430 | } |
| 431 | m_series->append(sets); |
| 432 | m_sets.append(t: sets); |
| 433 | blockSeriesSignals(block: false); |
| 434 | } |
| 435 | |
| 436 | void QCandlestickModelMapperPrivate::modelDataUpdated(QModelIndex topLeft, QModelIndex bottomRight) |
| 437 | { |
| 438 | Q_Q(QCandlestickModelMapper); |
| 439 | |
| 440 | if (!m_model || !m_series) |
| 441 | return; |
| 442 | |
| 443 | if (m_modelSignalsBlock) |
| 444 | return; |
| 445 | |
| 446 | blockSeriesSignals(); |
| 447 | QModelIndex index; |
| 448 | for (int row = topLeft.row(); row <= bottomRight.row(); ++row) { |
| 449 | for (int column = topLeft.column(); column <= bottomRight.column(); ++column) { |
| 450 | index = topLeft.sibling(arow: row, acolumn: column); |
| 451 | QCandlestickSet *set = candlestickSet(index); |
| 452 | if (set) { |
| 453 | int pos = (q->orientation() == Qt::Vertical) ? row : column; |
| 454 | if (pos == m_timestamp) |
| 455 | set->setTimestamp(m_model->data(index).toReal()); |
| 456 | else if (pos == m_open) |
| 457 | set->setOpen(m_model->data(index).toReal()); |
| 458 | else if (pos == m_high) |
| 459 | set->setHigh(m_model->data(index).toReal()); |
| 460 | else if (pos == m_low) |
| 461 | set->setLow(m_model->data(index).toReal()); |
| 462 | else if (pos == m_close) |
| 463 | set->setClose(m_model->data(index).toReal()); |
| 464 | } |
| 465 | } |
| 466 | } |
| 467 | blockSeriesSignals(block: false); |
| 468 | } |
| 469 | |
| 470 | void QCandlestickModelMapperPrivate::modelHeaderDataUpdated(Qt::Orientation orientation, int first, |
| 471 | int last) |
| 472 | { |
| 473 | Q_UNUSED(orientation); |
| 474 | Q_UNUSED(first); |
| 475 | Q_UNUSED(last); |
| 476 | } |
| 477 | |
| 478 | void QCandlestickModelMapperPrivate::modelRowsInserted(QModelIndex parent, int start, int end) |
| 479 | { |
| 480 | Q_UNUSED(parent) |
| 481 | |
| 482 | Q_Q(QCandlestickModelMapper); |
| 483 | |
| 484 | if (m_modelSignalsBlock) |
| 485 | return; |
| 486 | |
| 487 | blockSeriesSignals(); |
| 488 | if (q->orientation() == Qt::Vertical) |
| 489 | insertData(start, end); |
| 490 | else if (start <= m_firstSetSection || start <= m_lastSetSection) |
| 491 | initializeCandlestickFromModel(); // if the changes affect the map - reinitialize |
| 492 | blockSeriesSignals(block: false); |
| 493 | } |
| 494 | |
| 495 | void QCandlestickModelMapperPrivate::modelRowsRemoved(QModelIndex parent, int start, int end) |
| 496 | { |
| 497 | Q_UNUSED(parent) |
| 498 | |
| 499 | Q_Q(QCandlestickModelMapper); |
| 500 | |
| 501 | if (m_modelSignalsBlock) |
| 502 | return; |
| 503 | |
| 504 | blockSeriesSignals(); |
| 505 | if (q->orientation() == Qt::Vertical) |
| 506 | removeData(start, end); |
| 507 | else if (start <= m_firstSetSection || start <= m_lastSetSection) |
| 508 | initializeCandlestickFromModel(); // if the changes affect the map - reinitialize |
| 509 | blockSeriesSignals(block: false); |
| 510 | } |
| 511 | |
| 512 | void QCandlestickModelMapperPrivate::modelColumnsInserted(QModelIndex parent, int start, int end) |
| 513 | { |
| 514 | Q_UNUSED(parent) |
| 515 | |
| 516 | Q_Q(QCandlestickModelMapper); |
| 517 | |
| 518 | if (m_modelSignalsBlock) |
| 519 | return; |
| 520 | |
| 521 | blockSeriesSignals(); |
| 522 | if (q->orientation() == Qt::Horizontal) |
| 523 | insertData(start, end); |
| 524 | else if (start <= m_firstSetSection || start <= m_lastSetSection) |
| 525 | initializeCandlestickFromModel(); // if the changes affect the map - reinitialize |
| 526 | blockSeriesSignals(block: false); |
| 527 | } |
| 528 | |
| 529 | void QCandlestickModelMapperPrivate::modelColumnsRemoved(QModelIndex parent, int start, int end) |
| 530 | { |
| 531 | Q_UNUSED(parent) |
| 532 | |
| 533 | Q_Q(QCandlestickModelMapper); |
| 534 | |
| 535 | if (m_modelSignalsBlock) |
| 536 | return; |
| 537 | |
| 538 | blockSeriesSignals(); |
| 539 | if (q->orientation() == Qt::Horizontal) |
| 540 | removeData(start, end); |
| 541 | else if (start <= m_firstSetSection || start <= m_lastSetSection) |
| 542 | initializeCandlestickFromModel(); // if the changes affect the map - reinitialize |
| 543 | blockSeriesSignals(block: false); |
| 544 | } |
| 545 | |
| 546 | void QCandlestickModelMapperPrivate::modelDestroyed() |
| 547 | { |
| 548 | m_model = 0; |
| 549 | } |
| 550 | |
| 551 | void QCandlestickModelMapperPrivate::candlestickSetsAdded(const QList<QCandlestickSet *> &sets) |
| 552 | { |
| 553 | Q_Q(QCandlestickModelMapper); |
| 554 | |
| 555 | if (m_seriesSignalsBlock) |
| 556 | return; |
| 557 | |
| 558 | if (sets.isEmpty()) |
| 559 | return; |
| 560 | |
| 561 | int firstIndex = m_series->sets().indexOf(t: sets.at(i: 0)); |
| 562 | if (firstIndex == -1) |
| 563 | return; |
| 564 | |
| 565 | m_lastSetSection += sets.count(); |
| 566 | |
| 567 | blockModelSignals(); |
| 568 | if (q->orientation() == Qt::Vertical) |
| 569 | m_model->insertColumns(column: firstIndex + m_firstSetSection, count: sets.count()); |
| 570 | else |
| 571 | m_model->insertRows(row: firstIndex + m_firstSetSection, count: sets.count()); |
| 572 | |
| 573 | for (int i = 0; i < sets.count(); ++i) { |
| 574 | int section = i + firstIndex + m_firstSetSection; |
| 575 | m_model->setData(index: candlestickModelIndex(section, pos: m_timestamp), value: sets.at(i)->timestamp()); |
| 576 | m_model->setData(index: candlestickModelIndex(section, pos: m_open), value: sets.at(i)->open()); |
| 577 | m_model->setData(index: candlestickModelIndex(section, pos: m_high), value: sets.at(i)->high()); |
| 578 | m_model->setData(index: candlestickModelIndex(section, pos: m_low), value: sets.at(i)->low()); |
| 579 | m_model->setData(index: candlestickModelIndex(section, pos: m_close), value: sets.at(i)->close()); |
| 580 | } |
| 581 | blockModelSignals(block: false); |
| 582 | initializeCandlestickFromModel(); |
| 583 | } |
| 584 | |
| 585 | void QCandlestickModelMapperPrivate::candlestickSetsRemoved(const QList<QCandlestickSet *> &sets) |
| 586 | { |
| 587 | Q_Q(QCandlestickModelMapper); |
| 588 | |
| 589 | if (m_seriesSignalsBlock) |
| 590 | return; |
| 591 | |
| 592 | if (sets.isEmpty()) |
| 593 | return; |
| 594 | |
| 595 | QVector<int> removedIndices; |
| 596 | for (auto &set : sets) { |
| 597 | int index = m_sets.indexOf(t: set); |
| 598 | if (index != -1) |
| 599 | removedIndices << index; |
| 600 | } |
| 601 | |
| 602 | if (removedIndices.isEmpty()) |
| 603 | return; |
| 604 | |
| 605 | std::sort(first: removedIndices.begin(), last: removedIndices.end()); |
| 606 | |
| 607 | for (int i = removedIndices.size() - 1; i >= 0; --i) { |
| 608 | m_sets.removeAt(i: removedIndices[i]); |
| 609 | --m_lastSetSection; |
| 610 | } |
| 611 | |
| 612 | blockModelSignals(); |
| 613 | |
| 614 | // There is no guarantee removed sets are continuous, so remove them one by one |
| 615 | for (int i = removedIndices.size() - 1; i >= 0; --i) { |
| 616 | if (q->orientation() == Qt::Vertical) |
| 617 | m_model->removeColumns(column: removedIndices[i] + m_firstSetSection, count: 1); |
| 618 | else |
| 619 | m_model->removeRows(row: removedIndices[i] + m_firstSetSection, count: 1); |
| 620 | } |
| 621 | |
| 622 | blockModelSignals(block: false); |
| 623 | initializeCandlestickFromModel(); |
| 624 | } |
| 625 | |
| 626 | void QCandlestickModelMapperPrivate::candlestickSetChanged() |
| 627 | { |
| 628 | if (m_seriesSignalsBlock) |
| 629 | return; |
| 630 | |
| 631 | QCandlestickSet *set = qobject_cast<QCandlestickSet *>(object: QObject::sender()); |
| 632 | if (!set) |
| 633 | return; |
| 634 | |
| 635 | int section = m_series->sets().indexOf(t: set); |
| 636 | if (section < 0) |
| 637 | return; |
| 638 | |
| 639 | section += m_firstSetSection; |
| 640 | |
| 641 | blockModelSignals(); |
| 642 | m_model->setData(index: candlestickModelIndex(section, pos: m_timestamp), value: set->timestamp()); |
| 643 | m_model->setData(index: candlestickModelIndex(section, pos: m_open), value: set->open()); |
| 644 | m_model->setData(index: candlestickModelIndex(section, pos: m_high), value: set->high()); |
| 645 | m_model->setData(index: candlestickModelIndex(section, pos: m_low), value: set->low()); |
| 646 | m_model->setData(index: candlestickModelIndex(section, pos: m_close), value: set->close()); |
| 647 | blockModelSignals(block: false); |
| 648 | } |
| 649 | |
| 650 | void QCandlestickModelMapperPrivate::seriesDestroyed() |
| 651 | { |
| 652 | m_series = 0; |
| 653 | } |
| 654 | |
| 655 | QCandlestickSet *QCandlestickModelMapperPrivate::candlestickSet(QModelIndex index) |
| 656 | { |
| 657 | Q_Q(QCandlestickModelMapper); |
| 658 | |
| 659 | if (!index.isValid()) |
| 660 | return 0; |
| 661 | |
| 662 | int section = (q->orientation() == Qt::Vertical) ? index.column() : index.row(); |
| 663 | int pos = (q->orientation() == Qt::Vertical) ? index.row() : index.column(); |
| 664 | |
| 665 | if (section < m_firstSetSection || section > m_lastSetSection) |
| 666 | return 0; // This part of model has not been mapped to any candlestick set. |
| 667 | |
| 668 | if (pos != m_timestamp && pos != m_open && pos != m_high && pos != m_low && pos != m_close) |
| 669 | return 0; // This part of model has not been mapped to any candlestick set. |
| 670 | |
| 671 | return m_series->sets().at(i: section - m_firstSetSection); |
| 672 | } |
| 673 | |
| 674 | QModelIndex QCandlestickModelMapperPrivate::candlestickModelIndex(int section, int pos) |
| 675 | { |
| 676 | Q_Q(QCandlestickModelMapper); |
| 677 | |
| 678 | if (section < m_firstSetSection || section > m_lastSetSection) |
| 679 | return QModelIndex(); // invalid |
| 680 | |
| 681 | if (pos != m_timestamp && pos != m_open && pos != m_high && pos != m_low && pos != m_close) |
| 682 | return QModelIndex(); // invalid |
| 683 | |
| 684 | if (q->orientation() == Qt::Vertical) |
| 685 | return m_model->index(row: pos, column: section); |
| 686 | else |
| 687 | return m_model->index(row: section, column: pos); |
| 688 | } |
| 689 | |
| 690 | void QCandlestickModelMapperPrivate::insertData(int start, int end) |
| 691 | { |
| 692 | Q_UNUSED(start) |
| 693 | Q_UNUSED(end) |
| 694 | |
| 695 | // Currently candlestickchart needs to be fully recalculated when change is made. |
| 696 | initializeCandlestickFromModel(); |
| 697 | } |
| 698 | |
| 699 | void QCandlestickModelMapperPrivate::removeData(int start, int end) |
| 700 | { |
| 701 | Q_UNUSED(start) |
| 702 | Q_UNUSED(end) |
| 703 | |
| 704 | // Currently candlestickchart needs to be fully recalculated when change is made. |
| 705 | initializeCandlestickFromModel(); |
| 706 | } |
| 707 | |
| 708 | void QCandlestickModelMapperPrivate::blockModelSignals(bool block) |
| 709 | { |
| 710 | m_modelSignalsBlock = block; |
| 711 | } |
| 712 | |
| 713 | void QCandlestickModelMapperPrivate::blockSeriesSignals(bool block) |
| 714 | { |
| 715 | m_seriesSignalsBlock = block; |
| 716 | } |
| 717 | |
| 718 | QT_CHARTS_END_NAMESPACE |
| 719 | |
| 720 | #include "moc_qcandlestickmodelmapper.cpp" |
| 721 | #include "moc_qcandlestickmodelmapper_p.cpp" |
| 722 | |