UBLibPathViewer.cpp 15.7 KB
Newer Older
Claudio Valerio's avatar
Claudio Valerio committed
1 2 3 4 5 6 7 8 9 10 11 12 13 14
/*
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */
15 16 17 18 19 20 21 22
#include <QPixmap>
#include <QDrag>
#include <QPainter>

#include "UBLibPathViewer.h"
#include "core/UBApplication.h"
#include "board/UBBoardController.h"

23 24
#include "core/UBDownloadManager.h"
#include "board/UBBoardPaletteManager.h"
25

26 27
#include "core/memcheck.h"

28 29 30 31 32 33 34
/**
 * \brief Constructor
 * @param parent as the parent widget
 * @param name as the object name
 */
UBLibPathViewer::UBLibPathViewer(QWidget *parent, const char *name):QGraphicsView(parent)
    , mpElems(NULL)
35
    , mpElemsBackup(NULL)
36 37 38
    , mpScene(NULL)
    , mpLayout(NULL)
    , mpContainer(NULL)
39
    , mpBackElem(NULL)
40 41 42 43 44 45
{
    setObjectName(name);
    setVerticalScrollBarPolicy(Qt::ScrollBarAlwaysOff);
    setHorizontalScrollBarPolicy(Qt::ScrollBarAlwaysOn);
    setAcceptDrops(true);

46 47 48 49
    mpBackElem = new UBLibElement();
    mpBackElem->setThumbnail(QPixmap(":images/libpalette/back.png").toImage());
    mpBackElem->setDeletable(false);

50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73
    mpScene = new UBPathScene(this);
    setScene(mpScene);

    mpContainer = new QGraphicsWidget();
    mpContainer->setMinimumWidth(width() - 20);
    mpScene->addItem(mpContainer);
    mpLayout = new QGraphicsLinearLayout();
    mpContainer->setLayout(mpLayout);

    connect(mpScene, SIGNAL(mouseClick(UBChainedLibElement*)), this, SLOT(onMouseClicked(UBChainedLibElement*)));
    connect(mpScene, SIGNAL(elementsDropped(QList<QString>,UBLibElement*)), this, SLOT(onElementsDropped(QList<QString>,UBLibElement*)));
    connect(horizontalScrollBar(), SIGNAL(sliderMoved(int)), this, SLOT(onSliderMoved(int)));
}

/**
 * \brief Destructor
 */
UBLibPathViewer::~UBLibPathViewer()
{
    if(NULL != mpContainer)
    {
        delete mpContainer;
        mpContainer = NULL;
    }
74 75 76 77 78
    if(NULL != mpBackElem)
    {
        delete mpBackElem;
        mpBackElem = NULL;
    }
79 80 81 82 83
    if(NULL != mpElems)
    {
        delete mpElems;
        mpElems = NULL;
    }
84 85 86 87 88 89 90 91 92 93
    //if(NULL != mpElemsBackup)
    //{
    //    delete mpElemsBackup;
    //    mpElemsBackup = NULL;
    //}
    //if(NULL != mpLayout)
    //{
    //    delete mpLayout;
    //    mpLayout = NULL;
    //}
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
    if(NULL != mpScene)
    {
        delete mpScene;
        mpScene = NULL;
    }
}

/**
 * \brief Display the current path
 * @param elementsChain as the path to display
 */
void UBLibPathViewer::displayPath(UBChainedLibElement *elementsChain)
{
    if(NULL != elementsChain)
    {
        mpElems = elementsChain;
        refreshPath();
    }
}

/**
 * \brief Refresh the current path
 */
void UBLibPathViewer::refreshPath()
{
    if (mpScene && mpContainer)
        mpScene->removeItem(mpContainer);
    if(mpContainer)
        delete mpContainer;
    mVItems.clear();
    mpScene->mapWidgetToChainedElem()->clear();
    mpContainer = new QGraphicsWidget();

    mpScene->addItem(mpContainer);
    mpLayout = new QGraphicsLinearLayout();
    mpContainer->setLayout(mpLayout);
    mSceneWidth = 0;
    addItem(mpElems);
    mpLayout->addStretch();

    updateScrolls();

}

/**
 * \brief Handle the slider moved event
 * @param value as the current slider position
 */
void UBLibPathViewer::onSliderMoved(int value)
{
    Q_UNUSED(value);
}

/**
 * \brief Update the scroll bar status
 */
void UBLibPathViewer::updateScrolls()
{
    int iLimit = mSceneWidth + 40; // 2x 20 pixels margin
    int iVp = viewport()->width();

    if(iLimit >= iVp)
    {
        int iDiff = iLimit - iVp;
        horizontalScrollBar()->setRange(0, iDiff);
    }
    else
    {
        horizontalScrollBar()->setRange(0, 0);
    }
}

/**
 * \brief Append an item to the path
 * @param elem as the element to add to the path
 */
void UBLibPathViewer::addItem(UBChainedLibElement *elem)
{
    if(NULL != elem)
    {
        // Add the icon
        QLabel* pIconLabel = new QLabel();
        pIconLabel->setStyleSheet(QString("background-color: transparent;"));
        pIconLabel->setPixmap((QPixmap::fromImage(*elem->element()->thumbnail())).scaledToWidth(PATHITEMWIDTH));
        UBFolderPath* iconWidget = reinterpret_cast<UBFolderPath*>(mpScene->addWidget(pIconLabel));
        //iconWidget->setToolTip(elem->element()->name());
        iconWidget->setWindowFlags(Qt::BypassGraphicsProxyWidget);
        mpLayout->addItem(iconWidget);
        mVItems << iconWidget;
        mpScene->mapWidgetToChainedElem()->insert(iconWidget,elem);
        mSceneWidth += pIconLabel->pixmap()->width() + 4; // 2px border

        if(NULL != elem->nextElement())
        {
            // Add the arrow
            QLabel* pArrowLabel = new QLabel();
            pArrowLabel->setStyleSheet(QString("background-color: transparent;"));
            pArrowLabel->setPixmap(QPixmap(":images/navig_arrow.png"));
            QGraphicsWidget* arrowWidget = mpScene->addWidget(pArrowLabel);
            mpLayout->addItem(arrowWidget);
            mVItems << arrowWidget;
            mSceneWidth += pArrowLabel->pixmap()->width() + 4; // 2px border

            // Recursively call this method while a next item exists
            addItem(elem->nextElement());
        }
    }
}

/**
 * \brief Handles the resize event
 * @param event as the resize event
 */
void UBLibPathViewer::resizeEvent(QResizeEvent *event)
{
 
    if(event->oldSize() == event->size())
        event->ignore();
    else{
        if(NULL != mpContainer)
            mpContainer->setMinimumWidth(width() - 20);
        
        viewport()->resize(width() - 10, viewport()->height());

        updateScrolls();
        event->accept();
    }
}

void UBLibPathViewer::showEvent(QShowEvent *event)
{
    Q_UNUSED(event);
    updateScrolls();
}

/**
 * \brief Handles the mouse move event
 * @param event as the mouse move event
 */
void UBLibPathViewer::mouseMoveEvent(QMouseEvent *event)
{
    event->ignore();
}

void UBLibPathViewer::onMouseClicked(UBChainedLibElement *elem)
{
    emit mouseClick(elem);
}

int UBLibPathViewer::widgetAt(QPointF p)
{
    int position = -1;

    for(int i = 0; i < mVItems.size(); i++)
    {
        QGraphicsWidget* pCrntWidget = mVItems.at(i);
        if(NULL != pCrntWidget)
        {
            QRectF r = pCrntWidget->rect();
            QPointF wPos = pCrntWidget->scenePos();
            int xMin = wPos.x() + r.x();
            int xMax = wPos.x() + r.x() + r.width();
            int yMin = wPos.y() + r.y();
            int yMax = wPos.y() + r.y() + r.height();

            if(p.x() >= xMin &&
               p.x() <= xMax &&
               p.y() >= yMin &&
               p.y() <= yMax)
            {
                return i;
            }
        }
    }

    return position;
}

void UBLibPathViewer::onElementsDropped(QList<QString> elements, UBLibElement *target)
{
    emit elementsDropped(elements, target);
}

277 278 279 280 281 282 283 284 285 286 287
void UBLibPathViewer::showBack()
{
    // Backup the current path so we can go back by clicking on the back button
    mpElemsBackup = mpElems;

    // Set the correct path to the backElem
    UBChainedLibElement* pLastElem = mpElemsBackup->lastElement();

    if(NULL != pLastElem)
    {
        mpBackElem->setPath(pLastElem->element()->path());
Aleksei Kanash's avatar
Aleksei Kanash committed
288
        mpBackElem->setType(pLastElem->element()->type());
289 290 291 292 293 294
        mpBackElem->setName(pLastElem->element()->name());
    }

    // Display the 'back' element
    displayPath(new UBChainedLibElement(mpBackElem));
}
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

UBFolderPath::UBFolderPath():QGraphicsProxyWidget()
{

}

UBFolderPath::~UBFolderPath()
{

}

/**
 * \brief Handles the drag enter event
 * @param pEvent as the drag enter event
 */
void UBFolderPath::dragEnterEvent(QGraphicsSceneDragDropEvent *event)
{
    event->acceptProposedAction();
}

/**
 * \brief Handles the drop event
 * @param pEvent as the drop event
 */
void UBFolderPath::dropEvent(QDropEvent *pEvent)
{
    processMimeData(pEvent->mimeData());
    pEvent->acceptProposedAction();
}

/**
 * \brief Handles the drag move event
 * @param pEvent as the drag move event
 */
void UBFolderPath::dragMoveEvent(QDragMoveEvent* pEvent)
{
    pEvent->acceptProposedAction();
}

/**
 * \brief Process the given MIME data
 * @param pData as the MIME data to process
 */
void UBFolderPath::processMimeData(const QMimeData *pData)
{
    Q_UNUSED(pData);
}

/**
 * \brief Handles the mouse press event
 * @param event as the mouse press event
 */
void UBFolderPath::mousePressEvent(QGraphicsSceneMouseEvent *event)
{
    Q_UNUSED(event);
}

/**
 * \brief Handles the mouse move event
 * @param event as the mouse move event
 */
void UBFolderPath::mouseMoveEvent(QMouseEvent *event)
{
    Q_UNUSED(event);
}

/**
 * \brief Handles the mouse release event
 * @param event as the mouse release event
 */
void UBFolderPath::mouseReleaseEvent(QGraphicsSceneMouseEvent *event)
{
    Q_UNUSED(event);
}


UBPathScene::UBPathScene(QWidget* parent):QGraphicsScene(parent)
{
373
    connect(UBDownloadManager::downloadManager(), SIGNAL(allDownloadsFinished()), this, SLOT(onAllDownloadsFinished()));
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
}

UBPathScene::~UBPathScene()
{

}


void UBPathScene::mousePressEvent(QGraphicsSceneMouseEvent *event)
{
    if(event->button() == Qt::LeftButton)
    {
        mDragStartPos = event->scenePos();
        mClickTime = QTime::currentTime();
    }
}

/**
 * \brief Handles the mouse release event
 * @param event as the mouse release event
 */
void UBPathScene::mouseReleaseEvent(QGraphicsSceneMouseEvent *event)
{
    int elapsedTimeSincePress = mClickTime.elapsed();

    if(elapsedTimeSincePress < STARTDRAGTIME)
    {
        QGraphicsWidget* pGWidget = dynamic_cast<QGraphicsWidget*>(itemAt(event->pos()));
        if(NULL != pGWidget)
        {
            // We have only one view at a time
            UBLibPathViewer* pView = dynamic_cast<UBLibPathViewer*>(this->views().at(0));
            if(NULL != pView)
            {
                int iClickedItem = pView->widgetAt(event->scenePos());
409 410
				QGraphicsLayout* wgtLayout = pGWidget->layout();
                if(iClickedItem != -1 && wgtLayout != NULL)
411
                {
412
					QGraphicsWidget* pFolderW = dynamic_cast<QGraphicsWidget*>(wgtLayout->itemAt(iClickedItem));
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
                    if(NULL != pFolderW)
                    {
                        UBChainedLibElement* chElem = mMapWidgetToChainedElem[pFolderW];
                        if(NULL != chElem)
                        {
                            emit mouseClick(chElem);
                        }
                    }
                }
            }
        }
    }
}

/**
 * \brief Handles the mouse move event
 * @param event as the mouse move event
 */
void UBPathScene::mouseMoveEvent(QGraphicsSceneMouseEvent *event)
{
    if(event->button() == Qt::LeftButton)
    {
        if((event->pos() - mDragStartPos).manhattanLength() < QApplication::startDragDistance())
        {
            // The user is not doing a drag
            return;
        }

        // The user is performing a drag operation
        QDrag* drag = new QDrag(event->widget());
        QMimeData* mimeData = new QMimeData();
        drag->setMimeData(mimeData);
        drag->start();
    }
}


void UBPathScene::dragEnterEvent(QGraphicsSceneDragDropEvent *event)
{
    event->accept();
}

void UBPathScene::dragMoveEvent(QGraphicsSceneDragDropEvent *event)
{
    event->accept();
}

void UBPathScene::dropEvent(QGraphicsSceneDragDropEvent *event)
{
462
    bool bAccept = false;
463 464
    const QMimeData* pMimeData = event->mimeData();

465
    if(NULL != event->source() && 0 == QString::compare(event->source()->metaObject()->className(), "UBLibraryWidget")){
466
        UBLibElement* pTargetElement = elementFromPos(event->scenePos());
467 468
        if(NULL != pTargetElement){
            if(eUBLibElementType_Folder == pTargetElement->type()){
469 470 471 472 473 474
                // The drag comes from this application, we have now to get the list of UBLibElements*
                QList<QString> qlDroppedElems;

                foreach(QUrl url, pMimeData->urls())
                    qlDroppedElems << url.toString();

475
                if(!qlDroppedElems.empty()){
476 477 478 479 480 481
                    // Send a signal with the target dir and the list of ublibelement*
                    emit elementsDropped(qlDroppedElems, pTargetElement);
                }
            }
        }

482
        bAccept = true;
483 484
    }else if(NULL != pMimeData && pMimeData->hasUrls()){
        QList<QUrl> urls = pMimeData->urls();
485
        foreach(QUrl eachUrl, urls){
486
            QString sUrl = eachUrl.toString();
487
            if(!sUrl.startsWith("uniboardTool://") && !sUrl.startsWith("file://") && !sUrl.startsWith("/")){
488 489 490 491 492 493 494 495 496 497 498 499 500 501
                // The dropped URL comes from the web
                // Show the download palette if it is hidden
                UBApplication::boardController->paletteManager()->startDownloads();

                // Add the dropped url to the download list
                sDownloadFileDesc desc;
                desc.currentSize = 0;
                desc.id = 0;
                desc.isBackground = false;
                desc.modal = false;
                desc.name = QFileInfo(sUrl).fileName();
                desc.totalSize = 0;
                desc.url = sUrl;
                UBDownloadManager::downloadManager()->addFileToDownload(desc);
502
				bAccept = true;
503 504
            }
        }
505 506
    }
	if(!bAccept && NULL != pMimeData && pMimeData->hasText()){
507 508
        //  The user can only drop an Url in this location so if the text is not an Url,
        //  we discard it.
509
        QString qsTxt = pMimeData->text().remove(QRegExp("[\\0]"));
510 511 512 513 514 515 516 517 518 519 520 521 522 523 524 525
        if(qsTxt.startsWith("http")){
            // Show the download palette if it is hidden
            UBApplication::boardController->paletteManager()->startDownloads();

            // Add the dropped url to the download list
            sDownloadFileDesc desc;
            desc.currentSize = 0;
            desc.id = 0;
            desc.isBackground = false;
            desc.modal = false;
            desc.name = QFileInfo(qsTxt).fileName();
            desc.totalSize = 0;
            desc.url = qsTxt;
            UBDownloadManager::downloadManager()->addFileToDownload(desc);
            bAccept = true;
        }
526 527
    }
	if(!bAccept && NULL != pMimeData && pMimeData->hasHtml()){
528 529 530 531 532 533 534 535 536 537 538 539 540 541 542 543 544
        QString html = pMimeData->html();
        QString url = UBApplication::urlFromHtml(html);
        if("" != url)
        {
            // Show the download palette if it is hidden
            UBApplication::boardController->paletteManager()->startDownloads();

            // Add the dropped url to the download list
            sDownloadFileDesc desc;
            desc.currentSize = 0;
            desc.id = 0;
            desc.isBackground = false;
            desc.modal = false;
            desc.name = QFileInfo(url).fileName();
            desc.totalSize = 0;
            desc.url = url;
            UBDownloadManager::downloadManager()->addFileToDownload(desc);
545
			bAccept = true;
546
        }
547 548 549 550 551
    }
    if(bAccept){
        event->accept();
    }
    else{
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
        event->ignore();
    }
}

/**
 * \brief Return the element related to the given position
 * @param p as the given position
 *
 */
UBLibElement* UBPathScene::elementFromPos(QPointF p)
{
    UBLibElement* pElem = NULL;

    QGraphicsWidget* pGWidget = dynamic_cast<QGraphicsWidget*>(itemAt(p));
    if(NULL != pGWidget)
    {
        UBChainedLibElement* chElem = mMapWidgetToChainedElem[pGWidget];
        if(NULL != chElem)
        {
            return chElem->element();
        }
    }

    return pElem;
}
577 578 579 580 581 582

void UBPathScene::onAllDownloadsFinished()
{
    // Hide the download tab
    UBApplication::boardController->paletteManager()->stopDownloads();
}