/**************************************************************************** ** ** Copyright (C) 2012 Digia Plc and/or its subsidiary(-ies). ** Contact: http://www.qt-project.org/legal ** ** This file is part of the documentation of the Qt Toolkit. ** ** $QT_BEGIN_LICENSE:BSD$ ** You may use this file under the terms of the BSD license as follows: ** ** "Redistribution and use in source and binary forms, with or without ** modification, are permitted provided that the following conditions are ** met: ** * Redistributions of source code must retain the above copyright ** notice, this list of conditions and the following disclaimer. ** * Redistributions in binary form must reproduce the above copyright ** notice, this list of conditions and the following disclaimer in ** the documentation and/or other materials provided with the ** distribution. ** * Neither the name of Digia Plc and its Subsidiary(-ies) nor the names ** of its contributors may be used to endorse or promote products derived ** from this software without specific prior written permission. ** ** ** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS ** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT ** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR ** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT ** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, ** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT ** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, ** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY ** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT ** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE ** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE." ** ** $QT_END_LICENSE$ ** ****************************************************************************/ #include #include "mainwindow.h" #include "xmlwriter.h" MainWindow::MainWindow() { QMenu *fileMenu = new QMenu(tr("&File")); QAction *saveAction = fileMenu->addAction(tr("&Save...")); saveAction->setShortcut(tr("Ctrl+S")); QAction *quitAction = fileMenu->addAction(tr("E&xit")); quitAction->setShortcut(tr("Ctrl+Q")); menuBar()->addMenu(fileMenu); editor = new QTextEdit(); QTextCursor cursor(editor->textCursor()); cursor.movePosition(QTextCursor::Start); QTextFrame *mainFrame = cursor.currentFrame(); QTextCharFormat plainCharFormat; QTextCharFormat boldCharFormat; boldCharFormat.setFontWeight(QFont::Bold); /* main frame //! [0] QTextFrame *mainFrame = cursor.currentFrame(); cursor.insertText(...); //! [0] */ cursor.insertText("Text documents are represented by the " "QTextDocument class, rather than by QString objects. " "Each QTextDocument object contains information about " "the document's internal representation, its structure, " "and keeps track of modifications to provide undo/redo " "facilities. This approach allows features such as the " "layout management to be delegated to specialized " "classes, but also provides a focus for the framework.", plainCharFormat); //! [1] QTextFrameFormat frameFormat; frameFormat.setMargin(32); frameFormat.setPadding(8); frameFormat.setBorder(4); //! [1] cursor.insertFrame(frameFormat); /* insert frame //! [2] cursor.insertFrame(frameFormat); cursor.insertText(...); //! [2] */ cursor.insertText("Documents are either converted from external sources " "or created from scratch using Qt. The creation process " "can done by an editor widget, such as QTextEdit, or by " "explicit calls to the Scribe API.", boldCharFormat); cursor = mainFrame->lastCursorPosition(); /* last cursor //! [3] cursor = mainFrame->lastCursorPosition(); cursor.insertText(...); //! [3] */ cursor.insertText("There are two complementary ways to visualize the " "contents of a document: as a linear buffer that is " "used by editors to modify the contents, and as an " "object hierarchy containing structural information " "that is useful to layout engines. In the hierarchical " "model, the objects generally correspond to visual " "elements such as frames, tables, and lists. At a lower " "level, these elements describe properties such as the " "style of text used and its alignment. The linear " "representation of the document is used for editing and " "manipulation of the document's contents.", plainCharFormat); connect(saveAction, SIGNAL(triggered()), this, SLOT(saveFile())); connect(quitAction, SIGNAL(triggered()), this, SLOT(close())); setCentralWidget(editor); setWindowTitle(tr("Text Document Frames")); } void MainWindow::saveFile() { QString fileName = QFileDialog::getSaveFileName(this, tr("Save document as:"), "", tr("XML (*.xml)")); if (!fileName.isEmpty()) { if (writeXml(fileName)) setWindowTitle(fileName); else QMessageBox::warning(this, tr("Warning"), tr("Failed to save the document."), QMessageBox::Cancel, QMessageBox::NoButton); } } bool MainWindow::writeXml(const QString &fileName) { XmlWriter documentWriter(editor->document()); QDomDocument *domDocument = documentWriter.toXml(); QFile file(fileName); if (file.open(QFile::WriteOnly)) { QTextStream textStream(&file); textStream.setCodec(QTextCodec::codecForName("UTF-8")); textStream << domDocument->toString(1).toUtf8(); file.close(); return true; } else return false; } d='n2' href='#n2'>2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 475 476 477 478 479 480 481 482 483 484 485 486 487 488 489 490 491 492 493 494 495 496 497 498 499 500 501 502 503 504 505 506 507 508 509 510 511 512 513 514 515 516 517 518 519 520 521 522 523 524 525 526 527 528 529 530 531 532 533 534 535 536 537 538 539 540 541 542 543 544 545 546 547 548 549 550 551 552 553 554 555 556 557 558 559 560 561 562 563 564 565 566 567 568 569 570 571 572 573 574 575 576 577 578 579 580 581 582 583 584 585 586 587 588 589 590 591 592 593 594 595 596 597 598 599 600 601 602 603 604 605 606 607 608 609 610 611 612 613 614 615 616 617 618 619 620 621 622 623 624 625 626 627 628 629 630 631 632 633 634 635 636 637 638 639 640 641 642 643 644 645 646 647 648 649 650 651 652 653 654 655 656 657 658 659 660 661 662 663 664 665 666 667 668 669 670 671 672 673 674 675 676 677 678 679 680 681 682 683 684 685 686 687 688 689 690 691 692 693 694 695 696 697 698 699 700 701 702 703 704 705 706 707 708 709 710 711 712 713 714 715 716 717 718 719 720 721 722 723 724 725 726 727 728 729 730 731 732 733 734 735 736 737 738 739 740 741 742 743 744 745 746 747 748 749 750

/****************************************************************************
**
** Copyright (C) 2016 Klarälvdalens Datakonsult AB, a KDAB Group company, info@kdab.com, author David Faure <david.faure@kdab.com>
** Contact: https://www.qt.io/licensing/
**
** This file is part of the QtCore module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** Commercial License Usage
** Licensees holding valid commercial Qt licenses may use this file in
** accordance with the commercial license agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and The Qt Company. For licensing terms
** and conditions see https://www.qt.io/terms-conditions. For further
** information use the contact form at https://www.qt.io/contact-us.
**
** GNU Lesser General Public License Usage
** Alternatively, this file may be used under the terms of the GNU Lesser
** General Public License version 3 as published by the Free Software
** Foundation and appearing in the file LICENSE.LGPL3 included in the
** packaging of this file. Please review the following information to
** ensure the GNU Lesser General Public License version 3 requirements
** will be met: https://www.gnu.org/licenses/lgpl-3.0.html.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU
** General Public License version 2.0 or (at your option) the GNU General
** Public license version 3 or any later version approved by the KDE Free
** Qt Foundation. The licenses are as published by the Free Software
** Foundation and appearing in the file LICENSE.GPL2 and LICENSE.GPL3
** included in the packaging of this file. Please review the following
** information to ensure the GNU General Public License requirements will
** be met: https://www.gnu.org/licenses/gpl-2.0.html and
** https://www.gnu.org/licenses/gpl-3.0.html.
**
** $QT_END_LICENSE$
**
****************************************************************************/

#include "qconcatenatetablesproxymodel.h"
#include <private/qabstractitemmodel_p.h>
#include "qsize.h"
#include "qdebug.h"

QT_BEGIN_NAMESPACE

class QConcatenateTablesProxyModelPrivate : public QAbstractItemModelPrivate
{
    Q_DECLARE_PUBLIC(QConcatenateTablesProxyModel);

public:
    QConcatenateTablesProxyModelPrivate();

    int computeRowsPrior(const QAbstractItemModel *sourceModel) const;

    struct SourceModelForRowResult
    {
        SourceModelForRowResult() : sourceModel(nullptr), sourceRow(-1) {}
        QAbstractItemModel *sourceModel;
        int sourceRow;
    };
    SourceModelForRowResult sourceModelForRow(int row) const;

    void _q_slotRowsAboutToBeInserted(const QModelIndex &, int start, int end);
    void _q_slotRowsInserted(const QModelIndex &, int start, int end);
    void _q_slotRowsAboutToBeRemoved(const QModelIndex &, int start, int end);
    void _q_slotRowsRemoved(const QModelIndex &, int start, int end);
    void _q_slotColumnsAboutToBeInserted(const QModelIndex &parent, int start, int end);
    void _q_slotColumnsInserted(const QModelIndex &parent, int, int);
    void _q_slotColumnsAboutToBeRemoved(const QModelIndex &parent, int start, int end);
    void _q_slotColumnsRemoved(const QModelIndex &parent, int, int);
    void _q_slotDataChanged(const QModelIndex &from, const QModelIndex &to, const QVector<int> &roles);
    void _q_slotSourceLayoutAboutToBeChanged(const QList<QPersistentModelIndex> &sourceParents, QAbstractItemModel::LayoutChangeHint hint);
    void _q_slotSourceLayoutChanged(const QList<QPersistentModelIndex> &sourceParents, QAbstractItemModel::LayoutChangeHint hint);
    void _q_slotModelAboutToBeReset();
    void _q_slotModelReset();
    int columnCountAfterChange(const QAbstractItemModel *model, int newCount) const;
    int calculatedColumnCount() const;
    void updateColumnCount();
    bool mapDropCoordinatesToSource(int row, int column, const QModelIndex &parent,
                                    int *sourceRow, int *sourceColumn, QModelIndex *sourceParent, QAbstractItemModel **sourceModel) const;

    QVector<QAbstractItemModel *> m_models;
    int m_rowCount; // have to maintain it here since we can't compute during model destruction
    int m_columnCount;

    // for columns{AboutToBe,}{Inserted,Removed}
    int m_newColumnCount;

    // for layoutAboutToBeChanged/layoutChanged
    QVector<QPersistentModelIndex> layoutChangePersistentIndexes;
    QVector<QModelIndex> layoutChangeProxyIndexes;
};

QConcatenateTablesProxyModelPrivate::QConcatenateTablesProxyModelPrivate()
    : m_rowCount(0),
      m_columnCount(0),
      m_newColumnCount(0)
{
}

/*!
    \since 5.13
    \class QConcatenateTablesProxyModel
    \inmodule QtCore
    \brief The QConcatenateTablesProxyModel class proxies multiple source models, concatenating their rows.

    \ingroup model-view

    QConcatenateTablesProxyModel takes multiple source models and concatenates their rows.

    In other words, the proxy will have all rows of the first source model,
    followed by all rows of the second source model, and so on.

    If the source models don't have the same number of columns, the proxy will only
    have as many columns as the source model with the smallest number of columns.
    Additional columns in other source models will simply be ignored.

    Source models can be added and removed at runtime, and the column count is adjusted accordingly.

    This proxy does not inherit from QAbstractProxyModel because it uses multiple source
    models, rather than a single one.

    Only flat models (lists and tables) are supported, tree models are not.

    \sa QAbstractProxyModel, {Model/View Programming}, QIdentityProxyModel, QAbstractItemModel
 */


/*!
    Constructs a concatenate-rows proxy model with the given \a parent.
*/
QConcatenateTablesProxyModel::QConcatenateTablesProxyModel(QObject *parent)
    : QAbstractItemModel(*new QConcatenateTablesProxyModelPrivate, parent)
{
}

/*!
    Destroys this proxy model.
*/
QConcatenateTablesProxyModel::~QConcatenateTablesProxyModel()
{
}

/*!
    Returns the proxy index for a given \a sourceIndex, which can be from any of the source models.
*/
QModelIndex QConcatenateTablesProxyModel::mapFromSource(const QModelIndex &sourceIndex) const
{
    Q_D(const QConcatenateTablesProxyModel);
    if (!sourceIndex.isValid())
        return QModelIndex();
    const QAbstractItemModel *sourceModel = sourceIndex.model();
    if (!d->m_models.contains(const_cast<QAbstractItemModel *>(sourceModel))) {
        qWarning("QConcatenateTablesProxyModel: index from wrong model passed to mapFromSource");
        Q_ASSERT(!"QConcatenateTablesProxyModel: index from wrong model passed to mapFromSource");
        return QModelIndex();
    }
    if (sourceIndex.column() >= d->m_columnCount)
        return QModelIndex();
    int rowsPrior = d_func()->computeRowsPrior(sourceModel);
    return createIndex(rowsPrior + sourceIndex.row(), sourceIndex.column(), sourceIndex.internalPointer());
}

/*!