src/kitemviews/kstandarditemlistwidget.cpp

   1 /*
   2  * SPDX-FileCopyrightText: 2012 Peter Penz <peter.penz19@gmail.com>
   3  *
   4  * SPDX-License-Identifier: GPL-2.0-or-later
   5  */
   6
   7 #include "kstandarditemlistwidget.h"
   8
   9 #include "kfileitemlistview.h"
  10 #include "kfileitemmodel.h"
  11 #include "private/kfileitemclipboard.h"
  12 #include "private/kitemlistroleeditor.h"
  13 #include "private/kitemviewsutils.h"
  14 #include "private/kpixmapmodifier.h"
  15
  16 #include <KIconEffect>
  17 #include <KIconLoader>
  18 #include <KRatingPainter>
  19 #include <KStringHandler>
  20
  21 #include <QApplication>
  22 #include <QGraphicsScene>
  23 #include <QGraphicsSceneResizeEvent>
  24 #include <QGraphicsView>
  25 #include <QPixmapCache>
  26 #include <QStyleOption>
  27 #include <QVariantAnimation>
  28
  29 // #define KSTANDARDITEMLISTWIDGET_DEBUG
  30
  31 KStandardItemListWidgetInformant::KStandardItemListWidgetInformant()
  32     : KItemListWidgetInformant()
  33 {
  34 }
  35
  36 KStandardItemListWidgetInformant::~KStandardItemListWidgetInformant()
  37 {
  38 }
  39
  40 void KStandardItemListWidgetInformant::calculateItemSizeHints(QVector<std::pair<qreal, bool>> &logicalHeightHints,
  41                                                               qreal &logicalWidthHint,
  42                                                               const KItemListView *view) const
  43 {
  44     switch (static_cast<const KStandardItemListView *>(view)->itemLayout()) {
  45     case KStandardItemListView::IconsLayout:
  46         calculateIconsLayoutItemSizeHints(logicalHeightHints, logicalWidthHint, view);
  47         break;
  48
  49     case KStandardItemListView::CompactLayout:
  50         calculateCompactLayoutItemSizeHints(logicalHeightHints, logicalWidthHint, view);
  51         break;
  52
  53     case KStandardItemListView::DetailsLayout:
  54         calculateDetailsLayoutItemSizeHints(logicalHeightHints, logicalWidthHint, view);
  55         break;
  56
  57     default:
  58         Q_ASSERT(false);
  59         break;
  60     }
  61 }
  62
  63 qreal KStandardItemListWidgetInformant::preferredRoleColumnWidth(const QByteArray &role, int index, const KItemListView *view) const
  64 {
  65     const QHash<QByteArray, QVariant> values = view->model()->data(index);
  66     const KItemListStyleOption &option = view->styleOption();
  67
  68     const QString text = roleText(role, values);
  69     qreal width = KStandardItemListWidget::columnPadding(option);
  70
  71     const QFontMetrics &normalFontMetrics = option.fontMetrics;
  72     const QFontMetrics linkFontMetrics(customizedFontForLinks(option.font));
  73
  74     if (role == "rating") {
  75         width += KStandardItemListWidget::preferredRatingSize(option).width();
  76     } else {
  77         // If current item is a link, we use the customized link font metrics instead of the normal font metrics.
  78         const QFontMetrics &fontMetrics = itemIsLink(index, view) ? linkFontMetrics : normalFontMetrics;
  79
  80         width += fontMetrics.horizontalAdvance(text);
  81
  82         if (role == "text") {
  83             if (view->supportsItemExpanding()) {
  84                 // Increase the width by the expansion-toggle and the current expansion level
  85                 const int expandedParentsCount = values.value("expandedParentsCount", 0).toInt();
  86                 const qreal height = option.padding * 2 + qMax(option.iconSize, fontMetrics.height());
  87                 width += (expandedParentsCount + 1) * height;
  88             }
  89
  90             // Increase the width by the required space for the icon
  91             width += option.padding * 2 + option.iconSize;
  92         }
  93     }
  94
  95     return width;
  96 }
  97
  98 QString KStandardItemListWidgetInformant::itemText(int index, const KItemListView *view) const
  99 {
 100     return view->model()->data(index).value("text").toString();
 101 }
 102
 103 bool KStandardItemListWidgetInformant::itemIsLink(int index, const KItemListView *view) const
 104 {
 105     Q_UNUSED(index)
 106     Q_UNUSED(view)
 107     return false;
 108 }
 109
 110 QString KStandardItemListWidgetInformant::roleText(const QByteArray &role, const QHash<QByteArray, QVariant> &values) const
 111 {
 112     if (role == "rating") {
 113         // Always use an empty text, as the rating is shown by the image m_rating.
 114         return QString();
 115     }
 116     return values.value(role).toString();
 117 }
 118
 119 QFont KStandardItemListWidgetInformant::customizedFontForLinks(const QFont &baseFont) const
 120 {
 121     return baseFont;
 122 }
 123
 124 void KStandardItemListWidgetInformant::calculateIconsLayoutItemSizeHints(QVector<std::pair<qreal, bool>> &logicalHeightHints,
 125                                                                          qreal &logicalWidthHint,
 126                                                                          const KItemListView *view) const
 127 {
 128     const KItemListStyleOption &option = view->styleOption();
 129     const QFont &normalFont = option.font;
 130     const int additionalRolesCount = qMax(view->visibleRoles().count() - 1, 0);
 131
 132     const qreal itemWidth = view->itemSize().width();
 133     const qreal maxWidth = itemWidth - 2 * option.padding;
 134     const qreal additionalRolesSpacing = additionalRolesCount * option.fontMetrics.lineSpacing();
 135     const qreal spacingAndIconHeight = option.iconSize + option.padding * 3;
 136
 137     const QFont linkFont = customizedFontForLinks(normalFont);
 138
 139     QTextOption textOption(Qt::AlignHCenter);
 140     textOption.setWrapMode(QTextOption::WrapAtWordBoundaryOrAnywhere);
 141
 142     for (int index = 0; index < logicalHeightHints.count(); ++index) {
 143         if (logicalHeightHints.at(index).first > 0.0) {
 144             continue;
 145         }
 146
 147         // If the current item is a link, we use the customized link font instead of the normal font.
 148         const QFont &font = itemIsLink(index, view) ? linkFont : normalFont;
 149
 150         const QString &text = KStringHandler::preProcessWrap(itemText(index, view));
 151
 152         // Calculate the number of lines required for wrapping the name
 153         qreal textHeight = 0;
 154         QTextLayout layout(text, font);
 155         layout.setTextOption(textOption);
 156         layout.beginLayout();
 157         QTextLine line;
 158         int lineCount = 0;
 159         bool isElided = false;
 160         while ((line = layout.createLine()).isValid()) {
 161             line.setLineWidth(maxWidth);
 162             line.naturalTextWidth();
 163             textHeight += line.height();
 164
 165             ++lineCount;
 166             if (lineCount == option.maxTextLines) {
 167                 isElided = layout.createLine().isValid();
 168                 break;
 169             }
 170         }
 171         layout.endLayout();
 172
 173         // Add one line for each additional information
 174         textHeight += additionalRolesSpacing;
 175
 176         logicalHeightHints[index].first = textHeight + spacingAndIconHeight;
 177         logicalHeightHints[index].second = isElided;
 178     }
 179
 180     logicalWidthHint = itemWidth;
 181 }
 182
 183 void KStandardItemListWidgetInformant::calculateCompactLayoutItemSizeHints(QVector<std::pair<qreal, bool>> &logicalHeightHints,
 184                                                                            qreal &logicalWidthHint,
 185                                                                            const KItemListView *view) const
 186 {
 187     const KItemListStyleOption &option = view->styleOption();
 188     const QFontMetrics &normalFontMetrics = option.fontMetrics;
 189     const int additionalRolesCount = qMax(view->visibleRoles().count() - 1, 0);
 190
 191     const QList<QByteArray> &visibleRoles = view->visibleRoles();
 192     const bool showOnlyTextRole = (visibleRoles.count() == 1) && (visibleRoles.first() == "text");
 193     const qreal maxWidth = option.maxTextWidth;
 194     const qreal paddingAndIconWidth = option.padding * 4 + option.iconSize;
 195     const qreal height = option.padding * 2 + qMax(option.iconSize, (1 + additionalRolesCount) * normalFontMetrics.lineSpacing());
 196
 197     const QFontMetrics linkFontMetrics(customizedFontForLinks(option.font));
 198
 199     for (int index = 0; index < logicalHeightHints.count(); ++index) {
 200         if (logicalHeightHints.at(index).first > 0.0) {
 201             continue;
 202         }
 203
 204         // If the current item is a link, we use the customized link font metrics instead of the normal font metrics.
 205         const QFontMetrics &fontMetrics = itemIsLink(index, view) ? linkFontMetrics : normalFontMetrics;
 206
 207         // For each row exactly one role is shown. Calculate the maximum required width that is necessary
 208         // to show all roles without horizontal clipping.
 209         qreal maximumRequiredWidth = 0.0;
 210
 211         if (showOnlyTextRole) {
 212             maximumRequiredWidth = fontMetrics.horizontalAdvance(itemText(index, view));
 213         } else {
 214             const QHash<QByteArray, QVariant> &values = view->model()->data(index);
 215             for (const QByteArray &role : visibleRoles) {
 216                 const QString &text = roleText(role, values);
 217                 const qreal requiredWidth = fontMetrics.horizontalAdvance(text);
 218                 maximumRequiredWidth = qMax(maximumRequiredWidth, requiredWidth);
 219             }
 220         }
 221
 222         qreal width = paddingAndIconWidth + maximumRequiredWidth;
 223         if (maxWidth > 0 && width > maxWidth) {
 224             width = maxWidth;
 225         }
 226
 227         logicalHeightHints[index].first = width;
 228     }
 229
 230     logicalWidthHint = height;
 231 }
 232
 233 void KStandardItemListWidgetInformant::calculateDetailsLayoutItemSizeHints(QVector<std::pair<qreal, bool>> &logicalHeightHints,
 234                                                                            qreal &logicalWidthHint,
 235                                                                            const KItemListView *view) const
 236 {
 237     const KItemListStyleOption &option = view->styleOption();
 238     const qreal height = option.padding * 2 + qMax(option.iconSize, option.fontMetrics.height());
 239     logicalHeightHints.fill(std::make_pair(height, false));
 240     logicalWidthHint = -1.0;
 241 }
 242
 243 KStandardItemListWidget::KStandardItemListWidget(KItemListWidgetInformant *informant, QGraphicsItem *parent)
 244     : KItemListWidget(informant, parent)
 245     , m_textInfo()
 246     , m_isCut(false)
 247     , m_isHidden(false)
 248     , m_customizedFont()
 249     , m_customizedFontMetrics(m_customizedFont)
 250     , m_isExpandable(false)
 251     , m_highlightEntireRow(false)
 252     , m_supportsItemExpanding(false)
 253     , m_dirtyLayout(true)
 254     , m_dirtyContent(true)
 255     , m_dirtyContentRoles()
 256     , m_layout(IconsLayout)
 257     , m_pixmapPos()
 258     , m_pixmap()
 259     , m_scaledPixmapSize()
 260     , m_columnWidthSum()
 261     , m_iconRect()
 262     , m_hoverPixmap()
 263     , m_textRect()
 264     , m_sortedVisibleRoles()
 265     , m_expansionArea()
 266     , m_customTextColor()
 267     , m_additionalInfoTextColor()
 268     , m_overlay()
 269     , m_rating()
 270     , m_roleEditor(nullptr)
 271     , m_oldRoleEditor(nullptr)
 272 {
 273 }
 274
 275 KStandardItemListWidget::~KStandardItemListWidget()
 276 {
 277     qDeleteAll(m_textInfo);
 278     m_textInfo.clear();
 279
 280     if (m_roleEditor) {
 281         m_roleEditor->deleteLater();
 282     }
 283
 284     if (m_oldRoleEditor) {
 285         m_oldRoleEditor->deleteLater();
 286     }
 287 }
 288
 289 void KStandardItemListWidget::setLayout(Layout layout)
 290 {
 291     if (m_layout != layout) {
 292         m_layout = layout;
 293         m_dirtyLayout = true;
 294         updateAdditionalInfoTextColor();
 295         update();
 296     }
 297 }
 298
 299 void KStandardItemListWidget::setHighlightEntireRow(bool highlightEntireRow)
 300 {
 301     if (m_highlightEntireRow != highlightEntireRow) {
 302         m_highlightEntireRow = highlightEntireRow;
 303         m_dirtyLayout = true;
 304         update();
 305     }
 306 }
 307
 308 bool KStandardItemListWidget::highlightEntireRow() const
 309 {
 310     return m_highlightEntireRow;
 311 }
 312
 313 void KStandardItemListWidget::setSupportsItemExpanding(bool supportsItemExpanding)
 314 {
 315     if (m_supportsItemExpanding != supportsItemExpanding) {
 316         m_supportsItemExpanding = supportsItemExpanding;
 317         m_dirtyLayout = true;
 318         update();
 319     }
 320 }
 321
 322 bool KStandardItemListWidget::supportsItemExpanding() const
 323 {
 324     return m_supportsItemExpanding;
 325 }
 326
 327 void KStandardItemListWidget::paint(QPainter *painter, const QStyleOptionGraphicsItem *option, QWidget *widget)
 328 {
 329     const_cast<KStandardItemListWidget *>(this)->triggerCacheRefreshing();
 330
 331     KItemListWidget::paint(painter, option, widget);
 332
 333     if (!m_expansionArea.isEmpty()) {
 334         drawSiblingsInformation(painter);
 335     }
 336
 337     const KItemListStyleOption &itemListStyleOption = styleOption();
 338     if (isHovered() && !m_pixmap.isNull()) {
 339         if (hoverOpacity() < 1.0) {
 340             /*
 341              * Linear interpolation between m_pixmap and m_hoverPixmap.
 342              *
 343              * Note that this cannot be achieved by painting m_hoverPixmap over
 344              * m_pixmap, even if the opacities are adjusted. For details see
 345              * https://git.reviewboard.kde.org/r/109614/
 346              */
 347             // Paint pixmap1 so that pixmap1 = m_pixmap * (1.0 - hoverOpacity())
 348             QPixmap pixmap1(m_pixmap.size());
 349             pixmap1.setDevicePixelRatio(m_pixmap.devicePixelRatio());
 350             pixmap1.fill(Qt::transparent);
 351             {
 352                 QPainter p(&pixmap1);
 353                 p.setOpacity(1.0 - hoverOpacity());
 354                 p.drawPixmap(0, 0, m_pixmap);
 355             }
 356
 357             // Paint pixmap2 so that pixmap2 = m_hoverPixmap * hoverOpacity()
 358             QPixmap pixmap2(pixmap1.size());
 359             pixmap2.setDevicePixelRatio(pixmap1.devicePixelRatio());
 360             pixmap2.fill(Qt::transparent);
 361             {
 362                 QPainter p(&pixmap2);
 363                 p.setOpacity(hoverOpacity());
 364                 p.drawPixmap(0, 0, m_hoverPixmap);
 365             }
 366
 367             // Paint pixmap2 on pixmap1 using CompositionMode_Plus
 368             // Now pixmap1 = pixmap2 + m_pixmap * (1.0 - hoverOpacity())
 369             //             = m_hoverPixmap * hoverOpacity() + m_pixmap * (1.0 - hoverOpacity())
 370             {
 371                 QPainter p(&pixmap1);
 372                 p.setCompositionMode(QPainter::CompositionMode_Plus);
 373                 p.drawPixmap(0, 0, pixmap2);
 374             }
 375
 376             // Finally paint pixmap1 on the widget
 377             drawPixmap(painter, pixmap1);
 378         } else {
 379             drawPixmap(painter, m_hoverPixmap);
 380         }
 381     } else if (!m_pixmap.isNull()) {
 382         drawPixmap(painter, m_pixmap);
 383     }
 384
 385     painter->setFont(m_customizedFont);
 386     painter->setPen(textColor(*widget));
 387     const TextInfo *textInfo = m_textInfo.value("text");
 388
 389     if (!textInfo) {
 390         // It seems that we can end up here even if m_textInfo does not contain
 391         // the key "text", see bug 306167. According to triggerCacheRefreshing(),
 392         // this can only happen if the index is negative. This can happen when
 393         // the item is about to be removed, see KItemListView::slotItemsRemoved().
 394         // TODO: try to reproduce the crash and find a better fix.
 395         return;
 396     }
 397
 398     painter->drawStaticText(textInfo->pos, textInfo->staticText);
 399
 400     bool clipAdditionalInfoBounds = false;
 401     if (m_supportsItemExpanding) {
 402         // Prevent a possible overlapping of the additional-information texts
 403         // with the icon. This can happen if the user has minimized the width
 404         // of the name-column to a very small value.
 405         const qreal minX = m_pixmapPos.x() + m_pixmap.width() + 4 * itemListStyleOption.padding;
 406         if (textInfo->pos.x() + columnWidth("text") > minX) {
 407             clipAdditionalInfoBounds = true;
 408             painter->save();
 409             painter->setClipRect(minX, 0, size().width() - minX, size().height(), Qt::IntersectClip);
 410         }
 411     }
 412
 413     painter->setPen(m_additionalInfoTextColor);
 414     painter->setFont(m_customizedFont);
 415
 416     for (int i = 1; i < m_sortedVisibleRoles.count(); ++i) {
 417         const TextInfo *textInfo = m_textInfo.value(m_sortedVisibleRoles[i]);
 418         painter->drawStaticText(textInfo->pos, textInfo->staticText);
 419     }
 420
 421     if (!m_rating.isNull()) {
 422         const TextInfo *ratingTextInfo = m_textInfo.value("rating");
 423         QPointF pos = ratingTextInfo->pos;
 424         const Qt::Alignment align = ratingTextInfo->staticText.textOption().alignment();
 425         if (align & Qt::AlignHCenter) {
 426             pos.rx() += (size().width() - m_rating.width() / m_rating.devicePixelRatioF()) / 2 - 2;
 427         }
 428         painter->drawPixmap(pos, m_rating);
 429     }
 430
 431     if (clipAdditionalInfoBounds) {
 432         painter->restore();
 433     }
 434
 435 #ifdef KSTANDARDITEMLISTWIDGET_DEBUG
 436     painter->setBrush(Qt::NoBrush);
 437     painter->setPen(Qt::green);
 438     painter->drawRect(m_iconRect);
 439
 440     painter->setPen(Qt::blue);
 441     painter->drawRect(m_textRect);
 442
 443     painter->setPen(Qt::red);
 444     painter->drawText(QPointF(0, m_customizedFontMetrics.height()), QString::number(index()));
 445     painter->drawRect(rect());
 446 #endif
 447 }
 448
 449 QRectF KStandardItemListWidget::iconRect() const
 450 {
 451     const_cast<KStandardItemListWidget *>(this)->triggerCacheRefreshing();
 452     return m_iconRect;
 453 }
 454
 455 QRectF KStandardItemListWidget::textRect() const
 456 {
 457     const_cast<KStandardItemListWidget *>(this)->triggerCacheRefreshing();
 458     return m_textRect;
 459 }
 460
 461 QRectF KStandardItemListWidget::textFocusRect() const
 462 {
 463     // In the compact- and details-layout a larger textRect() is returned to be aligned
 464     // with the iconRect(). This is useful to have a larger selection/hover-area
 465     // when having a quite large icon size but only one line of text. Still the
 466     // focus rectangle should be shown as narrow as possible around the text.
 467
 468     const_cast<KStandardItemListWidget *>(this)->triggerCacheRefreshing();
 469
 470     switch (m_layout) {
 471     case CompactLayout: {
 472         QRectF rect = m_textRect;
 473         const TextInfo *topText = m_textInfo.value(m_sortedVisibleRoles.first());
 474         const TextInfo *bottomText = m_textInfo.value(m_sortedVisibleRoles.last());
 475         rect.setTop(topText->pos.y());
 476         rect.setBottom(bottomText->pos.y() + bottomText->staticText.size().height());
 477         return rect;
 478     }
 479
 480     case DetailsLayout: {
 481         QRectF rect = m_textRect;
 482         const TextInfo *textInfo = m_textInfo.value(m_sortedVisibleRoles.first());
 483         rect.setTop(textInfo->pos.y());
 484         rect.setBottom(textInfo->pos.y() + textInfo->staticText.size().height());
 485
 486         const KItemListStyleOption &option = styleOption();
 487         if (option.extendedSelectionRegion) {
 488             const QString text = textInfo->staticText.text();
 489             rect.setWidth(m_customizedFontMetrics.horizontalAdvance(text) + 2 * option.padding);
 490         }
 491
 492         return rect;
 493     }
 494
 495     default:
 496         break;
 497     }
 498
 499     return m_textRect;
 500 }
 501
 502 QRectF KStandardItemListWidget::selectionRect() const
 503 {
 504     const_cast<KStandardItemListWidget *>(this)->triggerCacheRefreshing();
 505
 506     switch (m_layout) {
 507     case IconsLayout:
 508         return m_textRect;
 509
 510     case CompactLayout:
 511     case DetailsLayout: {
 512         const int padding = styleOption().padding;
 513         QRectF adjustedIconRect = iconRect().adjusted(-padding, -padding, padding, padding);
 514         QRectF result = adjustedIconRect | m_textRect;
 515         if (m_highlightEntireRow) {
 516             result.setRight(m_columnWidthSum + sidePadding());
 517         }
 518         return result;
 519     }
 520
 521     default:
 522         Q_ASSERT(false);
 523         break;
 524     }
 525
 526     return m_textRect;
 527 }
 528
 529 QRectF KStandardItemListWidget::expansionToggleRect() const
 530 {
 531     const_cast<KStandardItemListWidget *>(this)->triggerCacheRefreshing();
 532     return m_isExpandable ? m_expansionArea : QRectF();
 533 }
 534
 535 QRectF KStandardItemListWidget::selectionToggleRect() const
 536 {
 537     const_cast<KStandardItemListWidget *>(this)->triggerCacheRefreshing();
 538
 539     const int widgetIconSize = iconSize();
 540     int toggleSize = KIconLoader::SizeSmall;
 541     if (widgetIconSize >= KIconLoader::SizeEnormous) {
 542         toggleSize = KIconLoader::SizeMedium;
 543     } else if (widgetIconSize >= KIconLoader::SizeLarge) {
 544         toggleSize = KIconLoader::SizeSmallMedium;
 545     }
 546
 547     QPointF pos = iconRect().topLeft();
 548
 549     // If the selection toggle has a very small distance to the
 550     // widget borders, the size of the selection toggle will get
 551     // increased to prevent an accidental clicking of the item
 552     // when trying to hit the toggle.
 553     const int widgetHeight = size().height();
 554     const int widgetWidth = size().width();
 555     const int minMargin = 2;
 556
 557     if (toggleSize + minMargin * 2 >= widgetHeight) {
 558         pos.rx() -= (widgetHeight - toggleSize) / 2;
 559         toggleSize = widgetHeight;
 560         pos.setY(0);
 561     }
 562     if (toggleSize + minMargin * 2 >= widgetWidth) {
 563         pos.ry() -= (widgetWidth - toggleSize) / 2;
 564         toggleSize = widgetWidth;
 565         pos.setX(0);
 566     }
 567
 568     return QRectF(pos, QSizeF(toggleSize, toggleSize));
 569 }
 570
 571 QPixmap KStandardItemListWidget::createDragPixmap(const QStyleOptionGraphicsItem *option, QWidget *widget)
 572 {
 573     QPixmap pixmap = KItemListWidget::createDragPixmap(option, widget);
 574     if (m_layout != DetailsLayout) {
 575         return pixmap;
 576     }
 577
 578     // Only return the content of the text-column as pixmap
 579     const int leftClip = m_pixmapPos.x();
 580
 581     const TextInfo *textInfo = m_textInfo.value("text");
 582     const int rightClip = textInfo->pos.x() + textInfo->staticText.size().width() + 2 * styleOption().padding;
 583
 584     QPixmap clippedPixmap(rightClip - leftClip + 1, pixmap.height());
 585     clippedPixmap.fill(Qt::transparent);
 586
 587     QPainter painter(&clippedPixmap);
 588     painter.drawPixmap(-leftClip, 0, pixmap);
 589
 590     return clippedPixmap;
 591 }
 592
 593 void KStandardItemListWidget::startActivateSoonAnimation(int timeUntilActivation)
 594 {
 595     if (m_activateSoonAnimation) {
 596         m_activateSoonAnimation->stop(); // automatically DeleteWhenStopped
 597     }
 598
 599     m_activateSoonAnimation = new QVariantAnimation{this};
 600     m_activateSoonAnimation->setStartValue(0.0);
 601     m_activateSoonAnimation->setEndValue(1.0);
 602     m_activateSoonAnimation->setDuration(timeUntilActivation);
 603
 604     const QVariant originalIconName{data()["iconName"]};
 605     connect(m_activateSoonAnimation, &QVariantAnimation::valueChanged, this, [originalIconName, this](const QVariant &value) {
 606         auto progress = value.toFloat();
 607
 608         QVariant wantedIconName;
 609         if (progress < 0.333) {
 610             wantedIconName = "folder-open";
 611         } else if (progress < 0.666) {
 612             wantedIconName = originalIconName;
 613         } else {
 614             wantedIconName = "folder-open";
 615         }
 616
 617         QHash<QByteArray, QVariant> itemData{data()};
 618         if (itemData["iconName"] != wantedIconName) {
 619             itemData.insert("iconName", wantedIconName);
 620             setData(itemData);
 621             invalidateIconCache();
 622         }
 623     });
 624
 625     connect(m_activateSoonAnimation, &QObject::destroyed, this, [originalIconName, this]() {
 626         QHash<QByteArray, QVariant> itemData{data()};
 627         if (itemData["iconName"] == "folder-open") {
 628             itemData.insert("iconName", originalIconName);
 629             setData(itemData);
 630             invalidateIconCache();
 631         }
 632     });
 633
 634     m_activateSoonAnimation->start(QAbstractAnimation::DeleteWhenStopped);
 635 }
 636
 637 bool KStandardItemListWidget::isIconControlledByActivateSoonAnimation() const
 638 {
 639     return m_activateSoonAnimation && data()["iconName"] == "folder-open";
 640 }
 641
 642 KItemListWidgetInformant *KStandardItemListWidget::createInformant()
 643 {
 644     return new KStandardItemListWidgetInformant();
 645 }
 646
 647 void KStandardItemListWidget::invalidateCache()
 648 {
 649     m_dirtyLayout = true;
 650     m_dirtyContent = true;
 651 }
 652
 653 void KStandardItemListWidget::invalidateIconCache()
 654 {
 655     m_dirtyContent = true;
 656     m_dirtyContentRoles.insert("iconPixmap");
 657     m_dirtyContentRoles.insert("iconOverlays");
 658 }
 659
 660 void KStandardItemListWidget::refreshCache()
 661 {
 662 }
 663
 664 bool KStandardItemListWidget::isRoleRightAligned(const QByteArray &role) const
 665 {
 666     Q_UNUSED(role)
 667     return false;
 668 }
 669
 670 bool KStandardItemListWidget::isHidden() const
 671 {
 672     return false;
 673 }
 674
 675 QFont KStandardItemListWidget::customizedFont(const QFont &baseFont) const
 676 {
 677     return baseFont;
 678 }
 679
 680 QPalette::ColorRole KStandardItemListWidget::normalTextColorRole() const
 681 {
 682     return QPalette::Text;
 683 }
 684
 685 void KStandardItemListWidget::setTextColor(const QColor &color)
 686 {
 687     if (color != m_customTextColor) {
 688         m_customTextColor = color;
 689         updateAdditionalInfoTextColor();
 690         update();
 691     }
 692 }
 693
 694 QColor KStandardItemListWidget::textColor(const QWidget &widget) const
 695 {
 696     if (!isSelected()) {
 697         if (m_isHidden) {
 698             return m_additionalInfoTextColor;
 699         } else if (m_customTextColor.isValid()) {
 700             return m_customTextColor;
 701         }
 702     }
 703
 704     const QPalette::ColorGroup group = isActiveWindow() && widget.hasFocus() ? QPalette::Active : QPalette::Inactive;
 705     const QPalette::ColorRole role = isSelected() ? QPalette::HighlightedText : normalTextColorRole();
 706     return styleOption().palette.color(group, role);
 707 }
 708
 709 void KStandardItemListWidget::setOverlay(const QPixmap &overlay)
 710 {
 711     m_overlay = overlay;
 712     m_dirtyContent = true;
 713     update();
 714 }
 715
 716 QPixmap KStandardItemListWidget::overlay() const
 717 {
 718     return m_overlay;
 719 }
 720
 721 QString KStandardItemListWidget::roleText(const QByteArray &role, const QHash<QByteArray, QVariant> &values) const
 722 {
 723     return static_cast<const KStandardItemListWidgetInformant *>(informant())->roleText(role, values);
 724 }
 725
 726 void KStandardItemListWidget::dataChanged(const QHash<QByteArray, QVariant> &current, const QSet<QByteArray> &roles)
 727 {
 728     Q_UNUSED(current)
 729
 730     m_dirtyContent = true;
 731
 732     QSet<QByteArray> dirtyRoles;
 733     if (roles.isEmpty()) {
 734         const auto visibleRoles = this->visibleRoles();
 735         dirtyRoles = QSet<QByteArray>(visibleRoles.constBegin(), visibleRoles.constEnd());
 736     } else {
 737         dirtyRoles = roles;
 738     }
 739
 740     // The URL might have changed (i.e., if the sort order of the items has
 741     // been changed). Therefore, the "is cut" state must be updated.
 742     KFileItemClipboard *clipboard = KFileItemClipboard::instance();
 743     const QUrl itemUrl = data().value("url").toUrl();
 744     m_isCut = clipboard->isCut(itemUrl);
 745
 746     // The icon-state might depend from other roles and hence is
 747     // marked as dirty whenever a role has been changed
 748     dirtyRoles.insert("iconPixmap");
 749     dirtyRoles.insert("iconName");
 750
 751     QSetIterator<QByteArray> it(dirtyRoles);
 752     while (it.hasNext()) {
 753         const QByteArray &role = it.next();
 754         m_dirtyContentRoles.insert(role);
 755     }
 756 }
 757
 758 void KStandardItemListWidget::visibleRolesChanged(const QList<QByteArray> &current, const QList<QByteArray> &previous)
 759 {
 760     Q_UNUSED(previous)
 761     m_sortedVisibleRoles = current;
 762     m_dirtyLayout = true;
 763 }
 764
 765 void KStandardItemListWidget::columnWidthChanged(const QByteArray &role, qreal current, qreal previous)
 766 {
 767     Q_UNUSED(role)
 768     Q_UNUSED(current)
 769     Q_UNUSED(previous)
 770     m_dirtyLayout = true;
 771 }
 772
 773 void KStandardItemListWidget::sidePaddingChanged(qreal padding)
 774 {
 775     Q_UNUSED(padding)
 776     m_dirtyLayout = true;
 777 }
 778
 779 void KStandardItemListWidget::styleOptionChanged(const KItemListStyleOption &current, const KItemListStyleOption &previous)
 780 {
 781     KItemListWidget::styleOptionChanged(current, previous);
 782
 783     updateAdditionalInfoTextColor();
 784     m_dirtyLayout = true;
 785 }
 786
 787 void KStandardItemListWidget::hoveredChanged(bool hovered)
 788 {
 789     if (!hovered && m_activateSoonAnimation) {
 790         m_activateSoonAnimation->stop(); // automatically DeleteWhenStopped
 791     }
 792     m_dirtyLayout = true;
 793 }
 794
 795 void KStandardItemListWidget::selectedChanged(bool selected)
 796 {
 797     Q_UNUSED(selected)
 798     updateAdditionalInfoTextColor();
 799     m_dirtyContent = true;
 800 }
 801
 802 void KStandardItemListWidget::siblingsInformationChanged(const QBitArray &current, const QBitArray &previous)
 803 {
 804     Q_UNUSED(current)
 805     Q_UNUSED(previous)
 806     m_dirtyLayout = true;
 807 }
 808
 809 int KStandardItemListWidget::selectionLength(const QString &text) const
 810 {
 811     return text.length();
 812 }
 813
 814 void KStandardItemListWidget::editedRoleChanged(const QByteArray &current, const QByteArray &previous)
 815 {
 816     Q_UNUSED(previous)
 817
 818     QGraphicsView *parent = scene()->views()[0];
 819     if (current.isEmpty() || !parent || current != "text") {
 820         if (m_roleEditor) {
 821             Q_EMIT roleEditingCanceled(index(), current, data().value(current));
 822
 823             disconnect(m_roleEditor, &KItemListRoleEditor::roleEditingCanceled, this, &KStandardItemListWidget::slotRoleEditingCanceled);
 824             disconnect(m_roleEditor, &KItemListRoleEditor::roleEditingFinished, this, &KStandardItemListWidget::slotRoleEditingFinished);
 825
 826             if (m_oldRoleEditor) {
 827                 m_oldRoleEditor->deleteLater();
 828             }
 829             m_oldRoleEditor = m_roleEditor;
 830             m_roleEditor->hide();
 831             m_roleEditor = nullptr;
 832         }
 833         return;
 834     }
 835
 836     Q_ASSERT(!m_roleEditor);
 837
 838     const TextInfo *textInfo = m_textInfo.value("text");
 839
 840     m_roleEditor = new KItemListRoleEditor(parent);
 841     m_roleEditor->setRole(current);
 842     m_roleEditor->setAllowUpDownKeyChainEdit(m_layout != IconsLayout);
 843     m_roleEditor->setFont(styleOption().font);
 844
 845     const QString text = data().value(current).toString();
 846     m_roleEditor->setPlainText(text);
 847
 848     QTextOption textOption = textInfo->staticText.textOption();
 849     m_roleEditor->document()->setDefaultTextOption(textOption);
 850
 851     const int textSelectionLength = selectionLength(text);
 852
 853     if (textSelectionLength > 0) {
 854         QTextCursor cursor = m_roleEditor->textCursor();
 855         cursor.movePosition(QTextCursor::StartOfBlock);
 856         cursor.movePosition(QTextCursor::NextCharacter, QTextCursor::KeepAnchor, textSelectionLength);
 857         m_roleEditor->setTextCursor(cursor);
 858     }
 859
 860     connect(m_roleEditor, &KItemListRoleEditor::roleEditingCanceled, this, &KStandardItemListWidget::slotRoleEditingCanceled);
 861     connect(m_roleEditor, &KItemListRoleEditor::roleEditingFinished, this, &KStandardItemListWidget::slotRoleEditingFinished);
 862
 863     // Adjust the geometry of the editor
 864     QRectF rect = roleEditingRect(current);
 865     const int frameWidth = m_roleEditor->frameWidth();
 866     rect.adjust(-frameWidth, -frameWidth, frameWidth, frameWidth);
 867     rect.translate(pos());
 868     if (rect.right() > parent->width()) {
 869         rect.setWidth(parent->width() - rect.left());
 870     }
 871     m_roleEditor->setGeometry(rect.toRect());
 872     m_roleEditor->autoAdjustSize();
 873     m_roleEditor->show();
 874     m_roleEditor->setFocus();
 875 }
 876
 877 void KStandardItemListWidget::iconSizeChanged(int current, int previous)
 878 {
 879     KItemListWidget::iconSizeChanged(current, previous);
 880
 881     invalidateIconCache();
 882     triggerCacheRefreshing();
 883     update();
 884 }
 885
 886 void KStandardItemListWidget::resizeEvent(QGraphicsSceneResizeEvent *event)
 887 {
 888     if (m_roleEditor) {
 889         setEditedRole(QByteArray());
 890         Q_ASSERT(!m_roleEditor);
 891     }
 892
 893     KItemListWidget::resizeEvent(event);
 894
 895     m_dirtyLayout = true;
 896 }
 897
 898 void KStandardItemListWidget::showEvent(QShowEvent *event)
 899 {
 900     KItemListWidget::showEvent(event);
 901
 902     // Listen to changes of the clipboard to mark the item as cut/uncut
 903     KFileItemClipboard *clipboard = KFileItemClipboard::instance();
 904
 905     const QUrl itemUrl = data().value("url").toUrl();
 906     m_isCut = clipboard->isCut(itemUrl);
 907
 908     connect(clipboard, &KFileItemClipboard::cutItemsChanged, this, &KStandardItemListWidget::slotCutItemsChanged);
 909 }
 910
 911 void KStandardItemListWidget::hideEvent(QHideEvent *event)
 912 {
 913     disconnect(KFileItemClipboard::instance(), &KFileItemClipboard::cutItemsChanged, this, &KStandardItemListWidget::slotCutItemsChanged);
 914
 915     KItemListWidget::hideEvent(event);
 916 }
 917
 918 bool KStandardItemListWidget::event(QEvent *event)
 919 {
 920     if (event->type() == QEvent::WindowDeactivate || event->type() == QEvent::WindowActivate || event->type() == QEvent::PaletteChange) {
 921         m_dirtyContent = true;
 922     }
 923
 924     return KItemListWidget::event(event);
 925 }
 926
 927 void KStandardItemListWidget::finishRoleEditing()
 928 {
 929     if (!editedRole().isEmpty() && m_roleEditor) {
 930         slotRoleEditingFinished(editedRole(), KIO::encodeFileName(m_roleEditor->toPlainText()));
 931     }
 932 }
 933
 934 void KStandardItemListWidget::slotCutItemsChanged()
 935 {
 936     const QUrl itemUrl = data().value("url").toUrl();
 937     const bool isCut = KFileItemClipboard::instance()->isCut(itemUrl);
 938     if (m_isCut != isCut) {
 939         m_isCut = isCut;
 940         m_pixmap = QPixmap();
 941         m_dirtyContent = true;
 942         update();
 943     }
 944 }
 945
 946 void KStandardItemListWidget::slotRoleEditingCanceled(const QByteArray &role, const QVariant &value)
 947 {
 948     closeRoleEditor();
 949     Q_EMIT roleEditingCanceled(index(), role, value);
 950     setEditedRole(QByteArray());
 951 }
 952
 953 void KStandardItemListWidget::slotRoleEditingFinished(const QByteArray &role, const QVariant &value)
 954 {
 955     closeRoleEditor();
 956     Q_EMIT roleEditingFinished(index(), role, value);
 957     setEditedRole(QByteArray());
 958 }
 959
 960 void KStandardItemListWidget::triggerCacheRefreshing()
 961 {
 962     if ((!m_dirtyContent && !m_dirtyLayout) || index() < 0) {
 963         return;
 964     }
 965
 966     refreshCache();
 967
 968     const QHash<QByteArray, QVariant> values = data();
 969     m_isExpandable = m_supportsItemExpanding && values["isExpandable"].toBool();
 970     m_isHidden = isHidden();
 971     m_customizedFont = customizedFont(styleOption().font);
 972     m_customizedFontMetrics = QFontMetrics(m_customizedFont);
 973     m_columnWidthSum = std::accumulate(m_sortedVisibleRoles.begin(), m_sortedVisibleRoles.end(), qreal(), [this](qreal sum, const auto &role) {
 974         return sum + columnWidth(role);
 975     });
 976
 977     updateExpansionArea();
 978     updateTextsCache();
 979     updatePixmapCache();
 980     clearHoverCache();
 981
 982     m_dirtyLayout = false;
 983     m_dirtyContent = false;
 984     m_dirtyContentRoles.clear();
 985 }
 986
 987 void KStandardItemListWidget::updateExpansionArea()
 988 {
 989     if (m_supportsItemExpanding) {
 990         const QHash<QByteArray, QVariant> values = data();
 991         const int expandedParentsCount = values.value("expandedParentsCount", 0).toInt();
 992         if (expandedParentsCount >= 0) {
 993             const int widgetIconSize = iconSize();
 994             const qreal widgetHeight = size().height();
 995             const qreal inc = (widgetHeight - widgetIconSize) / 2;
 996             const qreal x = expandedParentsCount * widgetHeight + inc;
 997             const qreal y = inc;
 998             const qreal xPadding = m_highlightEntireRow ? sidePadding() : 0;
 999             m_expansionArea = QRectF(xPadding + x, y, widgetIconSize, widgetIconSize);
1000             return;
1001         }
1002     }
1003
1004     m_expansionArea = QRectF();
1005 }
1006
1007 void KStandardItemListWidget::updatePixmapCache()
1008 {
1009     // Precondition: Requires already updated m_textPos values to calculate
1010     // the remaining height when the alignment is vertical.
1011
1012     const QSizeF widgetSize = size();
1013     const bool iconOnTop = (m_layout == IconsLayout);
1014     const KItemListStyleOption &option = styleOption();
1015     const qreal padding = option.padding;
1016     const qreal dpr = KItemViewsUtils::devicePixelRatio(this);
1017
1018     const int widgetIconSize = iconSize();
1019     const int maxIconWidth = iconOnTop ? widgetSize.width() - 2 * padding : widgetIconSize;
1020     const int maxIconHeight = widgetIconSize;
1021
1022     const QHash<QByteArray, QVariant> values = data();
1023
1024     bool updatePixmap = (m_pixmap.width() != maxIconWidth || m_pixmap.height() != maxIconHeight);
1025     if (!updatePixmap && m_dirtyContent) {
1026         updatePixmap = m_dirtyContentRoles.isEmpty() || m_dirtyContentRoles.contains("iconPixmap") || m_dirtyContentRoles.contains("iconName")
1027             || m_dirtyContentRoles.contains("iconOverlays");
1028     }
1029
1030     if (updatePixmap) {
1031         m_pixmap = QPixmap();
1032
1033         int sequenceIndex = hoverSequenceIndex();
1034
1035         if (values.contains("hoverSequencePixmaps") && !isIconControlledByActivateSoonAnimation()) {
1036             // Use one of the hover sequence pixmaps instead of the default
1037             // icon pixmap.
1038
1039             const QVector<QPixmap> pixmaps = values["hoverSequencePixmaps"].value<QVector<QPixmap>>();
1040
1041             if (values.contains("hoverSequenceWraparoundPoint")) {
1042                 const float wap = values["hoverSequenceWraparoundPoint"].toFloat();
1043                 if (wap >= 1.0f) {
1044                     sequenceIndex %= static_cast<int>(wap);
1045                 }
1046             }
1047
1048             const int loadedIndex = qMax(qMin(sequenceIndex, pixmaps.size() - 1), 0);
1049
1050             if (loadedIndex != 0) {
1051                 m_pixmap = pixmaps[loadedIndex];
1052             }
1053         }
1054
1055         if (m_pixmap.isNull() && !isIconControlledByActivateSoonAnimation()) {
1056             m_pixmap = values["iconPixmap"].value<QPixmap>();
1057         }
1058
1059         if (m_pixmap.isNull()) {
1060             // Use the icon that fits to the MIME-type
1061             QString iconName = values["iconName"].toString();
1062             if (iconName.isEmpty()) {
1063                 // The icon-name has not been not resolved by KFileItemModelRolesUpdater,
1064                 // use a generic icon as fallback
1065                 iconName = QStringLiteral("unknown");
1066             }
1067             const QStringList overlays = values["iconOverlays"].toStringList();
1068             const bool hasFocus = scene()->views()[0]->parentWidget()->hasFocus();
1069             m_pixmap = pixmapForIcon(iconName,
1070                                      overlays,
1071                                      maxIconHeight,
1072                                      m_layout != IconsLayout && isActiveWindow() && isSelected() && hasFocus ? QIcon::Selected : QIcon::Normal);
1073
1074         } else if (m_pixmap.width() / m_pixmap.devicePixelRatio() != maxIconWidth || m_pixmap.height() / m_pixmap.devicePixelRatio() != maxIconHeight) {
1075             // A custom pixmap has been applied. Assure that the pixmap
1076             // is scaled to the maximum available size.
1077             KPixmapModifier::scale(m_pixmap, QSize(maxIconWidth, maxIconHeight) * dpr);
1078         }
1079
1080         if (m_pixmap.isNull()) {
1081             m_hoverPixmap = QPixmap();
1082             return;
1083         }
1084
1085         if (m_isCut) {
1086             KIconEffect *effect = KIconLoader::global()->iconEffect();
1087             m_pixmap = effect->apply(m_pixmap, KIconLoader::Desktop, KIconLoader::DisabledState);
1088         }
1089
1090         if (m_isHidden) {
1091             KIconEffect::semiTransparent(m_pixmap);
1092         }
1093
1094         if (m_layout == IconsLayout && isSelected()) {
1095             const QColor color = palette().brush(QPalette::Normal, QPalette::Highlight).color();
1096             QImage image = m_pixmap.toImage();
1097             if (image.isNull()) {
1098                 m_hoverPixmap = QPixmap();
1099                 return;
1100             }
1101             KIconEffect::colorize(image, color, 0.8f);
1102             m_pixmap = QPixmap::fromImage(image);
1103         }
1104     }
1105
1106     if (!m_overlay.isNull()) {
1107         QPainter painter(&m_pixmap);
1108         painter.drawPixmap(0, (m_pixmap.height() - m_overlay.height()) / m_pixmap.devicePixelRatio(), m_overlay);
1109     }
1110
1111     int scaledIconSize = 0;
1112     if (iconOnTop) {
1113         const TextInfo *textInfo = m_textInfo.value("text");
1114         scaledIconSize = static_cast<int>(textInfo->pos.y() - 2 * padding);
1115     } else {
1116         const int textRowsCount = (m_layout == CompactLayout) ? visibleRoles().count() : 1;
1117         const qreal requiredTextHeight = textRowsCount * m_customizedFontMetrics.height();
1118         scaledIconSize = (requiredTextHeight < maxIconHeight) ? widgetSize.height() - 2 * padding : maxIconHeight;
1119     }
1120
1121     const int maxScaledIconWidth = iconOnTop ? widgetSize.width() - 2 * padding : scaledIconSize;
1122     const int maxScaledIconHeight = scaledIconSize;
1123
1124     m_scaledPixmapSize = m_pixmap.size();
1125     m_scaledPixmapSize.scale(maxScaledIconWidth * dpr, maxScaledIconHeight * dpr, Qt::KeepAspectRatio);
1126     m_scaledPixmapSize = m_scaledPixmapSize / dpr;
1127
1128     if (iconOnTop) {
1129         // Center horizontally and align on bottom within the icon-area
1130         m_pixmapPos.setX((widgetSize.width() - m_scaledPixmapSize.width()) / 2.0);
1131         m_pixmapPos.setY(padding + scaledIconSize - m_scaledPixmapSize.height());
1132     } else {
1133         // Center horizontally and vertically within the icon-area
1134         const TextInfo *textInfo = m_textInfo.value("text");
1135         if (QApplication::isRightToLeft() && m_layout == CompactLayout) {
1136             m_pixmapPos.setX(size().width() - padding - (scaledIconSize + m_scaledPixmapSize.width()) / 2.0);
1137         } else {
1138             m_pixmapPos.setX(textInfo->pos.x() - 2.0 * padding - (scaledIconSize + m_scaledPixmapSize.width()) / 2.0);
1139         }
1140
1141         // Derive icon's vertical center from the center of the text frame, including
1142         // any necessary adjustment if the font's midline is offset from the frame center
1143         const qreal midlineShift = m_customizedFontMetrics.height() / 2.0 - m_customizedFontMetrics.descent() - m_customizedFontMetrics.capHeight() / 2.0;
1144         m_pixmapPos.setY(m_textRect.center().y() + midlineShift - m_scaledPixmapSize.height() / 2.0);
1145     }
1146
1147     if (m_layout == IconsLayout) {
1148         m_iconRect = QRectF(m_pixmapPos, QSizeF(m_scaledPixmapSize));
1149     } else {
1150         const qreal widthOffset = widgetIconSize - m_scaledPixmapSize.width();
1151         const qreal heightOffset = widgetIconSize - m_scaledPixmapSize.height();
1152         const QPointF squareIconPos(m_pixmapPos.x() - 0.5 * widthOffset, m_pixmapPos.y() - 0.5 * heightOffset);
1153         const QSizeF squareIconSize(widgetIconSize, widgetIconSize);
1154         m_iconRect = QRectF(squareIconPos, squareIconSize);
1155     }
1156
1157     // Prepare the pixmap that is used when the item gets hovered
1158     if (isHovered()) {
1159         m_hoverPixmap = m_pixmap;
1160         KIconEffect *effect = KIconLoader::global()->iconEffect();
1161         // In the KIconLoader terminology, active = hover.
1162         if (effect->hasEffect(KIconLoader::Desktop, KIconLoader::ActiveState)) {
1163             m_hoverPixmap = effect->apply(m_pixmap, KIconLoader::Desktop, KIconLoader::ActiveState);
1164         } else {
1165             m_hoverPixmap = m_pixmap;
1166         }
1167     } else if (hoverOpacity() <= 0.0) {
1168         // No hover animation is ongoing. Clear m_hoverPixmap to save memory.
1169         m_hoverPixmap = QPixmap();
1170     }
1171 }
1172
1173 void KStandardItemListWidget::updateTextsCache()
1174 {
1175     QTextOption textOption;
1176     switch (m_layout) {
1177     case IconsLayout:
1178         textOption.setWrapMode(QTextOption::WrapAtWordBoundaryOrAnywhere);
1179         textOption.setAlignment(Qt::AlignHCenter);
1180         break;
1181     case CompactLayout:
1182         textOption.setAlignment(QApplication::isRightToLeft() ? Qt::AlignRight : Qt::AlignLeft);
1183         textOption.setWrapMode(QTextOption::NoWrap);
1184         break;
1185     case DetailsLayout:
1186         textOption.setAlignment(Qt::AlignLeft);
1187         textOption.setWrapMode(QTextOption::NoWrap);
1188         break;
1189     default:
1190         Q_ASSERT(false);
1191         break;
1192     }
1193
1194     qDeleteAll(m_textInfo);
1195     m_textInfo.clear();
1196     for (int i = 0; i < m_sortedVisibleRoles.count(); ++i) {
1197         TextInfo *textInfo = new TextInfo();
1198         textInfo->staticText.setTextFormat(Qt::PlainText);
1199         textInfo->staticText.setPerformanceHint(QStaticText::AggressiveCaching);
1200         textInfo->staticText.setTextOption(textOption);
1201         m_textInfo.insert(m_sortedVisibleRoles[i], textInfo);
1202     }
1203
1204     switch (m_layout) {
1205     case IconsLayout:
1206         updateIconsLayoutTextCache();
1207         break;
1208     case CompactLayout:
1209         updateCompactLayoutTextCache();
1210         break;
1211     case DetailsLayout:
1212         updateDetailsLayoutTextCache();
1213         break;
1214     default:
1215         Q_ASSERT(false);
1216         break;
1217     }
1218
1219     const TextInfo *ratingTextInfo = m_textInfo.value("rating");
1220     if (ratingTextInfo) {
1221         // The text of the rating-role has been set to empty to get
1222         // replaced by a rating-image showing the rating as stars.
1223         const KItemListStyleOption &option = styleOption();
1224         QSizeF ratingSize = preferredRatingSize(option);
1225
1226         const qreal availableWidth = (m_layout == DetailsLayout) ? columnWidth("rating") - columnPadding(option) : size().width();
1227         if (ratingSize.width() > availableWidth) {
1228             ratingSize.rwidth() = availableWidth;
1229         }
1230         const qreal dpr = KItemViewsUtils::devicePixelRatio(this);
1231         m_rating = QPixmap(ratingSize.toSize() * dpr);
1232         m_rating.setDevicePixelRatio(dpr);
1233         m_rating.fill(Qt::transparent);
1234
1235         QPainter painter(&m_rating);
1236         const QRect rect(QPoint(0, 0), ratingSize.toSize());
1237         const int rating = data().value("rating").toInt();
1238         KRatingPainter::paintRating(&painter, rect, Qt::AlignJustify | Qt::AlignVCenter, rating);
1239     } else if (!m_rating.isNull()) {
1240         m_rating = QPixmap();
1241     }
1242 }
1243
1244 QString KStandardItemListWidget::elideRightKeepExtension(const QString &text, int elidingWidth) const
1245 {
1246     const auto extensionIndex = text.lastIndexOf('.');
1247     if (extensionIndex != -1) {
1248         // has file extension
1249         const auto extensionLength = text.length() - extensionIndex;
1250         const auto extensionWidth = m_customizedFontMetrics.horizontalAdvance(text.right(extensionLength));
1251         if (elidingWidth > extensionWidth && extensionLength < 6 && (float(extensionWidth) / float(elidingWidth)) < 0.3) {
1252             // if we have room to display the file extension and the extension is not too long
1253             QString ret = m_customizedFontMetrics.elidedText(text.chopped(extensionLength), Qt::ElideRight, elidingWidth - extensionWidth);
1254 #if QT_VERSION < QT_VERSION_CHECK(6, 0, 0)
1255             ret.append(text.rightRef(extensionLength));
1256 #else
1257             ret.append(QStringView(text).right(extensionLength));
1258 #endif
1259             return ret;
1260         }
1261     }
1262     return m_customizedFontMetrics.elidedText(text, Qt::ElideRight, elidingWidth);
1263 }
1264
1265 QString KStandardItemListWidget::escapeString(const QString &text) const
1266 {
1267     QString escaped(text);
1268
1269     const QChar returnSymbol(0x21b5);
1270     escaped.replace('\n', returnSymbol);
1271
1272     return escaped;
1273 }
1274
1275 void KStandardItemListWidget::updateIconsLayoutTextCache()
1276 {
1277     //      +------+
1278     //      | Icon |
1279     //      +------+
1280     //
1281     //    Name role that
1282     // might get wrapped above
1283     //    several lines.
1284     //  Additional role 1
1285     //  Additional role 2
1286
1287     const QHash<QByteArray, QVariant> values = data();
1288
1289     const KItemListStyleOption &option = styleOption();
1290     const qreal padding = option.padding;
1291     const qreal maxWidth = size().width() - 2 * padding;
1292     const qreal lineSpacing = m_customizedFontMetrics.lineSpacing();
1293
1294     // Initialize properties for the "text" role. It will be used as anchor
1295     // for initializing the position of the other roles.
1296     TextInfo *nameTextInfo = m_textInfo.value("text");
1297     const QString nameText = KStringHandler::preProcessWrap(escapeString(values["text"].toString()));
1298     nameTextInfo->staticText.setText(nameText);
1299
1300     // Calculate the number of lines required for the name and the required width
1301     qreal nameWidth = 0;
1302     qreal nameHeight = 0;
1303     QTextLine line;
1304
1305     QTextLayout layout(nameTextInfo->staticText.text(), m_customizedFont);
1306     layout.setTextOption(nameTextInfo->staticText.textOption());
1307     layout.beginLayout();
1308     int nameLineIndex = 0;
1309     while ((line = layout.createLine()).isValid()) {
1310         line.setLineWidth(maxWidth);
1311         nameWidth = qMax(nameWidth, line.naturalTextWidth());
1312         nameHeight += line.height();
1313
1314         ++nameLineIndex;
1315         if (nameLineIndex == option.maxTextLines) {
1316             // The maximum number of textlines has been reached. If this is
1317             // the case provide an elided text if necessary.
1318             const int textLength = line.textStart() + line.textLength();
1319             if (textLength < nameText.length()) {
1320                 // Elide the last line of the text
1321                 qreal elidingWidth = maxWidth;
1322                 qreal lastLineWidth;
1323                 do {
1324                     QString lastTextLine = nameText.mid(line.textStart());
1325                     lastTextLine = elideRightKeepExtension(lastTextLine, elidingWidth);
1326                     const QString elidedText = nameText.left(line.textStart()) + lastTextLine;
1327                     nameTextInfo->staticText.setText(elidedText);
1328
1329                     lastLineWidth = m_customizedFontMetrics.horizontalAdvance(lastTextLine);
1330
1331                     // We do the text eliding in a loop with decreasing width (1 px / iteration)
1332                     // to avoid problems related to different width calculation code paths
1333                     // within Qt. (see bug 337104)
1334                     elidingWidth -= 1.0;
1335                 } while (lastLineWidth > maxWidth);
1336
1337                 nameWidth = qMax(nameWidth, lastLineWidth);
1338             }
1339             break;
1340         }
1341     }
1342     layout.endLayout();
1343
1344     // Use one line for each additional information
1345     nameTextInfo->staticText.setTextWidth(maxWidth);
1346     nameTextInfo->pos = QPointF(padding, iconSize() + 2 * padding);
1347     m_textRect = QRectF(padding + (maxWidth - nameWidth) / 2, nameTextInfo->pos.y(), nameWidth, nameHeight);
1348
1349     // Calculate the position for each additional information
1350     qreal y = nameTextInfo->pos.y() + nameHeight;
1351     for (const QByteArray &role : std::as_const(m_sortedVisibleRoles)) {
1352         if (role == "text") {
1353             continue;
1354         }
1355
1356         const QString text = roleText(role, values);
1357         TextInfo *textInfo = m_textInfo.value(role);
1358         textInfo->staticText.setText(text);
1359
1360         qreal requiredWidth = 0;
1361
1362         QTextLayout layout(text, m_customizedFont);
1363         QTextOption textOption;
1364         textOption.setWrapMode(QTextOption::NoWrap);
1365         layout.setTextOption(textOption);
1366
1367         layout.beginLayout();
1368         QTextLine textLine = layout.createLine();
1369         if (textLine.isValid()) {
1370             textLine.setLineWidth(maxWidth);
1371             requiredWidth = textLine.naturalTextWidth();
1372             if (requiredWidth > maxWidth) {
1373                 const QString elidedText = elideRightKeepExtension(text, maxWidth);
1374                 textInfo->staticText.setText(elidedText);
1375                 requiredWidth = m_customizedFontMetrics.horizontalAdvance(elidedText);
1376             } else if (role == "rating") {
1377                 // Use the width of the rating pixmap, because the rating text is empty.
1378                 requiredWidth = m_rating.width() / m_rating.devicePixelRatioF();
1379             }
1380         }
1381         layout.endLayout();
1382
1383         textInfo->pos = QPointF(padding, y);
1384         textInfo->staticText.setTextWidth(maxWidth);
1385
1386         const QRectF textRect(padding + (maxWidth - requiredWidth) / 2, y, requiredWidth, lineSpacing);
1387
1388         // Ignore empty roles. Avoids a text rect taller than the area that actually contains text.
1389         if (!textRect.isEmpty()) {
1390             m_textRect |= textRect;
1391         }
1392
1393         y += lineSpacing;
1394     }
1395
1396     // Add a padding to the text rectangle
1397     m_textRect.adjust(-padding, -padding, padding, padding);
1398 }
1399
1400 void KStandardItemListWidget::updateCompactLayoutTextCache()
1401 {
1402     // +------+  Name role
1403     // | Icon |  Additional role 1
1404     // +------+  Additional role 2
1405
1406     const QHash<QByteArray, QVariant> values = data();
1407
1408     const KItemListStyleOption &option = styleOption();
1409     const qreal widgetHeight = size().height();
1410     const qreal lineSpacing = m_customizedFontMetrics.lineSpacing();
1411     const qreal textLinesHeight = qMax(visibleRoles().count(), 1) * lineSpacing;
1412
1413     qreal maximumRequiredTextWidth = 0;
1414     const qreal x = QApplication::isRightToLeft() ? option.padding : option.padding * 3 + iconSize();
1415     qreal y = qRound((widgetHeight - textLinesHeight) / 2);
1416     const qreal maxWidth = size().width() - iconSize() - 4 * option.padding;
1417     for (const QByteArray &role : std::as_const(m_sortedVisibleRoles)) {
1418         const QString text = escapeString(roleText(role, values));
1419         TextInfo *textInfo = m_textInfo.value(role);
1420         textInfo->staticText.setText(text);
1421
1422         qreal requiredWidth = m_customizedFontMetrics.horizontalAdvance(text);
1423         if (requiredWidth > maxWidth) {
1424             requiredWidth = maxWidth;
1425             const QString elidedText = elideRightKeepExtension(text, maxWidth);
1426             textInfo->staticText.setText(elidedText);
1427         }
1428
1429         textInfo->pos = QPointF(x, y);
1430         textInfo->staticText.setTextWidth(maxWidth);
1431
1432         maximumRequiredTextWidth = qMax(maximumRequiredTextWidth, requiredWidth);
1433
1434         y += lineSpacing;
1435     }
1436
1437     m_textRect = QRectF(x - option.padding, 0, maximumRequiredTextWidth + 2 * option.padding, widgetHeight);
1438 }
1439
1440 void KStandardItemListWidget::updateDetailsLayoutTextCache()
1441 {
1442     // Precondition: Requires already updated m_expansionArea
1443     // to determine the left position.
1444
1445     // +------+
1446     // | Icon |  Name role   Additional role 1   Additional role 2
1447     // +------+
1448     m_textRect = QRectF();
1449
1450     const KItemListStyleOption &option = styleOption();
1451     const QHash<QByteArray, QVariant> values = data();
1452
1453     const qreal widgetHeight = size().height();
1454     const int fontHeight = m_customizedFontMetrics.height();
1455
1456     const qreal columnWidthInc = columnPadding(option);
1457     qreal firstColumnInc = iconSize();
1458     if (m_supportsItemExpanding) {
1459         firstColumnInc += (m_expansionArea.left() + m_expansionArea.right() + widgetHeight) / 2;
1460     } else {
1461         firstColumnInc += option.padding + sidePadding();
1462     }
1463
1464     qreal x = firstColumnInc;
1465     const qreal y = qMax(qreal(option.padding), (widgetHeight - fontHeight) / 2);
1466
1467     for (const QByteArray &role : std::as_const(m_sortedVisibleRoles)) {
1468         QString text = roleText(role, values);
1469
1470         // Elide the text in case it does not fit into the available column-width
1471         qreal requiredWidth = m_customizedFontMetrics.horizontalAdvance(text);
1472         const qreal roleWidth = columnWidth(role);
1473         qreal availableTextWidth = roleWidth - columnWidthInc;
1474
1475         const bool isTextRole = (role == "text");
1476         if (isTextRole) {
1477             text = escapeString(text);
1478             availableTextWidth -= firstColumnInc - sidePadding();
1479         }
1480
1481         if (requiredWidth > availableTextWidth) {
1482             text = elideRightKeepExtension(text, availableTextWidth);
1483             requiredWidth = m_customizedFontMetrics.horizontalAdvance(text);
1484         }
1485
1486         TextInfo *textInfo = m_textInfo.value(role);
1487         textInfo->staticText.setText(text);
1488         textInfo->pos = QPointF(x + columnWidthInc / 2, y);
1489         x += roleWidth;
1490
1491         if (isTextRole) {
1492             const qreal textWidth = option.extendedSelectionRegion ? size().width() - textInfo->pos.x() : requiredWidth + 2 * option.padding;
1493             m_textRect = QRectF(textInfo->pos.x() - option.padding, 0, textWidth, size().height());
1494
1495             // The column after the name should always be aligned on the same x-position independent
1496             // from the expansion-level shown in the name column
1497             x -= firstColumnInc - sidePadding();
1498         } else if (isRoleRightAligned(role)) {
1499             textInfo->pos.rx() += roleWidth - requiredWidth - columnWidthInc;
1500         }
1501     }
1502 }
1503
1504 void KStandardItemListWidget::updateAdditionalInfoTextColor()
1505 {
1506     QColor c1;
1507     const bool hasFocus = scene()->views()[0]->parentWidget()->hasFocus();
1508     if (m_customTextColor.isValid()) {
1509         c1 = m_customTextColor;
1510     } else if (isSelected() && hasFocus && (m_layout != DetailsLayout || m_highlightEntireRow)) {
1511         // The detail text colour needs to match the main text (HighlightedText) for the same level
1512         // of readability. We short circuit early here to avoid interpolating with another colour.
1513         m_additionalInfoTextColor = styleOption().palette.color(QPalette::HighlightedText);
1514         return;
1515     } else {
1516         c1 = styleOption().palette.text().color();
1517     }
1518
1519     // For the color of the additional info the inactive text color
1520     // is not used as this might lead to unreadable text for some color schemes. Instead
1521     // the text color c1 is slightly mixed with the background color.
1522     const QColor c2 = styleOption().palette.base().color();
1523     const int p1 = 70;
1524     const int p2 = 100 - p1;
1525     m_additionalInfoTextColor =
1526         QColor((c1.red() * p1 + c2.red() * p2) / 100, (c1.green() * p1 + c2.green() * p2) / 100, (c1.blue() * p1 + c2.blue() * p2) / 100);
1527 }
1528
1529 void KStandardItemListWidget::drawPixmap(QPainter *painter, const QPixmap &pixmap)
1530 {
1531     if (m_scaledPixmapSize != pixmap.size() / pixmap.devicePixelRatio()) {
1532         const qreal dpr = KItemViewsUtils::devicePixelRatio(this);
1533         QPixmap scaledPixmap = pixmap;
1534         KPixmapModifier::scale(scaledPixmap, m_scaledPixmapSize * dpr);
1535         scaledPixmap.setDevicePixelRatio(dpr);
1536         painter->drawPixmap(m_pixmapPos, scaledPixmap);
1537
1538 #ifdef KSTANDARDITEMLISTWIDGET_DEBUG
1539         painter->setPen(Qt::blue);
1540         painter->drawRect(QRectF(m_pixmapPos, QSizeF(m_scaledPixmapSize)));
1541 #endif
1542     } else {
1543         painter->drawPixmap(m_pixmapPos, pixmap);
1544     }
1545 }
1546
1547 void KStandardItemListWidget::drawSiblingsInformation(QPainter *painter)
1548 {
1549     const int siblingSize = size().height();
1550     const int x = (m_expansionArea.left() + m_expansionArea.right() - siblingSize) / 2;
1551     QRect siblingRect(x, 0, siblingSize, siblingSize);
1552
1553     bool isItemSibling = true;
1554
1555     const QBitArray siblings = siblingsInformation();
1556     QStyleOption option;
1557     const auto normalColor = option.palette.color(normalTextColorRole());
1558     const auto highlightColor = option.palette.color(expansionAreaHovered() ? QPalette::Highlight : normalTextColorRole());
1559     for (int i = siblings.count() - 1; i >= 0; --i) {
1560         option.rect = siblingRect;
1561         option.state = siblings.at(i) ? QStyle::State_Sibling : QStyle::State_None;
1562         if (isItemSibling) {
1563             option.state |= QStyle::State_Item;
1564             if (m_isExpandable) {
1565                 option.state |= QStyle::State_Children;
1566             }
1567             if (data().value("isExpanded").toBool()) {
1568                 option.state |= QStyle::State_Open;
1569             }
1570             option.palette.setColor(QPalette::Text, highlightColor);
1571             isItemSibling = false;
1572         } else {
1573             option.palette.setColor(QPalette::Text, normalColor);
1574         }
1575
1576         style()->drawPrimitive(QStyle::PE_IndicatorBranch, &option, painter);
1577
1578         siblingRect.translate(-siblingRect.width(), 0);
1579     }
1580 }
1581
1582 QRectF KStandardItemListWidget::roleEditingRect(const QByteArray &role) const
1583 {
1584     const TextInfo *textInfo = m_textInfo.value(role);
1585     if (!textInfo) {
1586         return QRectF();
1587     }
1588
1589     QRectF rect(textInfo->pos, textInfo->staticText.size());
1590     if (m_layout == DetailsLayout) {
1591         rect.setWidth(columnWidth(role) - rect.x());
1592     }
1593
1594     return rect;
1595 }
1596
1597 void KStandardItemListWidget::closeRoleEditor()
1598 {
1599     disconnect(m_roleEditor, &KItemListRoleEditor::roleEditingCanceled, this, &KStandardItemListWidget::slotRoleEditingCanceled);
1600     disconnect(m_roleEditor, &KItemListRoleEditor::roleEditingFinished, this, &KStandardItemListWidget::slotRoleEditingFinished);
1601
1602     if (m_roleEditor->hasFocus()) {
1603         // If the editing was not ended by a FocusOut event, we have
1604         // to transfer the keyboard focus back to the KItemListContainer.
1605         scene()->views()[0]->parentWidget()->setFocus();
1606     }
1607
1608     if (m_oldRoleEditor) {
1609         m_oldRoleEditor->deleteLater();
1610     }
1611     m_oldRoleEditor = m_roleEditor;
1612     m_roleEditor->hide();
1613     m_roleEditor = nullptr;
1614 }
1615
1616 QPixmap KStandardItemListWidget::pixmapForIcon(const QString &name, const QStringList &overlays, int size, QIcon::Mode mode) const
1617 {
1618     static const QIcon fallbackIcon = QIcon::fromTheme(QStringLiteral("unknown"));
1619     const qreal dpr = KItemViewsUtils::devicePixelRatio(this);
1620
1621     size *= dpr;
1622
1623     const QString key = "KStandardItemListWidget:" % name % ":" % overlays.join(QLatin1Char(':')) % ":" % QString::number(size) % "@" % QString::number(dpr)
1624         % ":" % QString::number(mode);
1625     QPixmap pixmap;
1626
1627     if (!QPixmapCache::find(key, &pixmap)) {
1628         QIcon icon = QIcon::fromTheme(name);
1629         if (icon.isNull()) {
1630             icon = QIcon(name);
1631         }
1632         if (icon.isNull() || icon.pixmap(size / dpr, size / dpr, mode).isNull()) {
1633             icon = fallbackIcon;
1634         }
1635
1636         pixmap = icon.pixmap(QSize(size / dpr, size / dpr), dpr, mode);
1637         if (pixmap.width() != size || pixmap.height() != size) {
1638             KPixmapModifier::scale(pixmap, QSize(size, size));
1639         }
1640
1641         // Strangely KFileItem::overlays() returns empty string-values, so
1642         // we need to check first whether an overlay must be drawn at all.
1643         // It is more efficient to do it here, as KIconLoader::drawOverlays()
1644         // assumes that an overlay will be drawn and has some additional
1645         // setup time.
1646         for (const QString &overlay : overlays) {
1647             if (!overlay.isEmpty()) {
1648                 int state = KIconLoader::DefaultState;
1649
1650                 switch (mode) {
1651                 case QIcon::Normal:
1652                     break;
1653                 case QIcon::Active:
1654                     state = KIconLoader::ActiveState;
1655                     break;
1656                 case QIcon::Disabled:
1657                     state = KIconLoader::DisabledState;
1658                     break;
1659                 case QIcon::Selected:
1660                     state = KIconLoader::SelectedState;
1661                     break;
1662                 }
1663
1664                 // There is at least one overlay, draw all overlays above m_pixmap
1665                 // and cancel the check
1666                 KIconLoader::global()->drawOverlays(overlays, pixmap, KIconLoader::Desktop, state);
1667                 break;
1668             }
1669         }
1670
1671         QPixmapCache::insert(key, pixmap);
1672     }
1673     pixmap.setDevicePixelRatio(dpr);
1674
1675     return pixmap;
1676 }
1677
1678 QSizeF KStandardItemListWidget::preferredRatingSize(const KItemListStyleOption &option)
1679 {
1680     const qreal height = option.fontMetrics.ascent();
1681     return QSizeF(height * 5, height);
1682 }
1683
1684 qreal KStandardItemListWidget::columnPadding(const KItemListStyleOption &option)
1685 {
1686     return option.padding * 6;
1687 }
1688
1689 #include "moc_kstandarditemlistwidget.cpp"