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 "dolphin_contentdisplaysettings.h"
  10 #include "kfileitemlistview.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 <KIconUtils>
  19 #include <KRatingPainter>
  20 #include <KStringHandler>
  21 #include <klocalizedstring.h>
  22
  23 #include <QApplication>
  24 #include <QGraphicsScene>
  25 #include <QGraphicsSceneResizeEvent>
  26 #include <QGraphicsView>
  27 #include <QPixmapCache>
  28 #include <QStyleOption>
  29 #include <QTextBoundaryFinder>
  30 #include <QVariantAnimation>
  31
  32 // #define KSTANDARDITEMLISTWIDGET_DEBUG
  33
  34 KStandardItemListWidgetInformant::KStandardItemListWidgetInformant()
  35     : KItemListWidgetInformant()
  36 {
  37 }
  38
  39 KStandardItemListWidgetInformant::~KStandardItemListWidgetInformant()
  40 {
  41 }
  42
  43 void KStandardItemListWidgetInformant::calculateItemSizeHints(QVector<std::pair<qreal, bool>> &logicalHeightHints,
  44                                                               qreal &logicalWidthHint,
  45                                                               const KItemListView *view) const
  46 {
  47     switch (static_cast<const KStandardItemListView *>(view)->itemLayout()) {
  48     case KStandardItemListView::IconsLayout:
  49         calculateIconsLayoutItemSizeHints(logicalHeightHints, logicalWidthHint, view);
  50         break;
  51
  52     case KStandardItemListView::CompactLayout:
  53         calculateCompactLayoutItemSizeHints(logicalHeightHints, logicalWidthHint, view);
  54         break;
  55
  56     case KStandardItemListView::DetailsLayout:
  57         calculateDetailsLayoutItemSizeHints(logicalHeightHints, logicalWidthHint, view);
  58         break;
  59
  60     default:
  61         Q_ASSERT(false);
  62         break;
  63     }
  64 }
  65
  66 qreal KStandardItemListWidgetInformant::preferredRoleColumnWidth(const QByteArray &role, int index, const KItemListView *view) const
  67 {
  68     const QHash<QByteArray, QVariant> values = view->model()->data(index);
  69     const KItemListStyleOption &option = view->styleOption();
  70
  71     const QString text = roleText(role, values);
  72     qreal width = KStandardItemListWidget::columnPadding(option);
  73
  74     const QFontMetrics &normalFontMetrics = option.fontMetrics;
  75     const QFontMetrics linkFontMetrics(customizedFontForLinks(option.font));
  76
  77     if (role == "rating") {
  78         width += KStandardItemListWidget::preferredRatingSize(option).width();
  79     } else {
  80         // If current item is a link, we use the customized link font metrics instead of the normal font metrics.
  81         const QFontMetrics &fontMetrics = itemIsLink(index, view) ? linkFontMetrics : normalFontMetrics;
  82
  83         width += fontMetrics.horizontalAdvance(text);
  84
  85         if (role == "text") {
  86             if (view->supportsItemExpanding()) {
  87                 // Increase the width by the expansion-toggle and the current expansion level
  88                 const int expandedParentsCount = values.value("expandedParentsCount", 0).toInt();
  89                 const qreal height = option.padding * 2 + qMax(option.iconSize, fontMetrics.height());
  90                 width += (expandedParentsCount + 1) * height;
  91             }
  92
  93             // Increase the width by the required space for the icon
  94             width += option.padding * 2 + option.iconSize;
  95         }
  96     }
  97
  98     return width;
  99 }
 100
 101 QString KStandardItemListWidgetInformant::itemText(int index, const KItemListView *view) const
 102 {
 103     return view->model()->data(index).value("text").toString();
 104 }
 105
 106 bool KStandardItemListWidgetInformant::itemIsLink(int index, const KItemListView *view) const
 107 {
 108     Q_UNUSED(index)
 109     Q_UNUSED(view)
 110     return false;
 111 }
 112
 113 QString KStandardItemListWidgetInformant::roleText(const QByteArray &role, const QHash<QByteArray, QVariant> &values, ForUsageAs forUsageAs) const
 114 {
 115     if (role == "rating") {
 116         if (forUsageAs == ForUsageAs::DisplayedText) {
 117             // Always use an empty text, as the rating is shown by the image m_rating.
 118             return QString();
 119         } else {
 120             const int rating{values.value(role).toInt()};
 121             // Check if there are half stars
 122             if (rating % 2) {
 123                 return i18ncp("@accessible rating", "%1 and a half stars", "%1 and a half stars", rating / 2);
 124             }
 125             return i18ncp("@accessible rating", "%1 star", "%1 stars", rating / 2);
 126         }
 127     }
 128     return values.value(role).toString();
 129 }
 130
 131 QFont KStandardItemListWidgetInformant::customizedFontForLinks(const QFont &baseFont) const
 132 {
 133     return baseFont;
 134 }
 135
 136 void KStandardItemListWidgetInformant::calculateIconsLayoutItemSizeHints(QVector<std::pair<qreal, bool>> &logicalHeightHints,
 137                                                                          qreal &logicalWidthHint,
 138                                                                          const KItemListView *view) const
 139 {
 140     const KItemListStyleOption &option = view->styleOption();
 141     const QFont &normalFont = option.font;
 142     const int additionalRolesCount = qMax(view->visibleRoles().count() - 1, 0);
 143
 144     const qreal itemWidth = view->itemSize().width();
 145     const qreal maxWidth = itemWidth - 2 * option.padding;
 146     const qreal additionalRolesSpacing = additionalRolesCount * option.fontMetrics.lineSpacing();
 147     const qreal spacingAndIconHeight = option.iconSize + option.padding * 3;
 148
 149     const QFont linkFont = customizedFontForLinks(normalFont);
 150
 151     QTextOption textOption(Qt::AlignHCenter);
 152     textOption.setWrapMode(QTextOption::WrapAtWordBoundaryOrAnywhere);
 153
 154     for (int index = 0; index < logicalHeightHints.count(); ++index) {
 155         if (logicalHeightHints.at(index).first > 0.0) {
 156             continue;
 157         }
 158
 159         // If the current item is a link, we use the customized link font instead of the normal font.
 160         const QFont &font = itemIsLink(index, view) ? linkFont : normalFont;
 161
 162         const QString &text = KStringHandler::preProcessWrap(itemText(index, view));
 163
 164         // Calculate the number of lines required for wrapping the name
 165         qreal textHeight = 0;
 166         QTextLayout layout(text, font);
 167         layout.setTextOption(textOption);
 168         layout.beginLayout();
 169         QTextLine line;
 170         int lineCount = 0;
 171         bool isElided = false;
 172         while ((line = layout.createLine()).isValid()) {
 173             line.setLineWidth(maxWidth);
 174             line.naturalTextWidth();
 175             textHeight += line.height();
 176
 177             ++lineCount;
 178             if (lineCount == option.maxTextLines) {
 179                 isElided = layout.createLine().isValid();
 180                 break;
 181             }
 182         }
 183         layout.endLayout();
 184
 185         // Add one line for each additional information
 186         textHeight += additionalRolesSpacing;
 187
 188         logicalHeightHints[index].first = textHeight + spacingAndIconHeight;
 189         logicalHeightHints[index].second = isElided;
 190     }
 191
 192     logicalWidthHint = itemWidth;
 193 }
 194
 195 void KStandardItemListWidgetInformant::calculateCompactLayoutItemSizeHints(QVector<std::pair<qreal, bool>> &logicalHeightHints,
 196                                                                            qreal &logicalWidthHint,
 197                                                                            const KItemListView *view) const
 198 {
 199     const KItemListStyleOption &option = view->styleOption();
 200     const QFontMetrics &normalFontMetrics = option.fontMetrics;
 201     const int additionalRolesCount = qMax(view->visibleRoles().count() - 1, 0);
 202
 203     const QList<QByteArray> &visibleRoles = view->visibleRoles();
 204     const bool showOnlyTextRole = (visibleRoles.count() == 1) && (visibleRoles.first() == "text");
 205     const qreal maxWidth = option.maxTextWidth;
 206     const qreal paddingAndIconWidth = option.padding * 4 + option.iconSize;
 207     const qreal height = option.padding * 2 + qMax(option.iconSize, (1 + additionalRolesCount) * normalFontMetrics.lineSpacing());
 208
 209     const QFontMetrics linkFontMetrics(customizedFontForLinks(option.font));
 210
 211     for (int index = 0; index < logicalHeightHints.count(); ++index) {
 212         if (logicalHeightHints.at(index).first > 0.0) {
 213             continue;
 214         }
 215
 216         // If the current item is a link, we use the customized link font metrics instead of the normal font metrics.
 217         const QFontMetrics &fontMetrics = itemIsLink(index, view) ? linkFontMetrics : normalFontMetrics;
 218
 219         // For each row exactly one role is shown. Calculate the maximum required width that is necessary
 220         // to show all roles without horizontal clipping.
 221         qreal maximumRequiredWidth = 0.0;
 222
 223         if (showOnlyTextRole) {
 224             maximumRequiredWidth = fontMetrics.horizontalAdvance(itemText(index, view));
 225         } else {
 226             const QHash<QByteArray, QVariant> &values = view->model()->data(index);
 227             for (const QByteArray &role : visibleRoles) {
 228                 const QString &text = roleText(role, values);
 229                 const qreal requiredWidth = fontMetrics.horizontalAdvance(text);
 230                 maximumRequiredWidth = qMax(maximumRequiredWidth, requiredWidth);
 231             }
 232         }
 233
 234         qreal width = paddingAndIconWidth + maximumRequiredWidth;
 235         if (maxWidth > 0 && width > maxWidth) {
 236             width = maxWidth;
 237         }
 238
 239         logicalHeightHints[index].first = width;
 240     }
 241
 242     logicalWidthHint = height;
 243 }
 244
 245 void KStandardItemListWidgetInformant::calculateDetailsLayoutItemSizeHints(QVector<std::pair<qreal, bool>> &logicalHeightHints,
 246                                                                            qreal &logicalWidthHint,
 247                                                                            const KItemListView *view) const
 248 {
 249     const KItemListStyleOption &option = view->styleOption();
 250     const qreal height = option.padding * 2 + qMax(option.iconSize, option.fontMetrics.height());
 251     logicalHeightHints.fill(std::make_pair(height, false));
 252     logicalWidthHint = -1.0;
 253 }
 254
 255 KStandardItemListWidget::KStandardItemListWidget(KItemListWidgetInformant *informant, QGraphicsItem *parent)
 256     : KItemListWidget(informant, parent)
 257     , m_textInfo()
 258     , m_isCut(false)
 259     , m_isHidden(false)
 260     , m_customizedFont()
 261     , m_customizedFontMetrics(m_customizedFont)
 262     , m_isExpandable(false)
 263     , m_highlightEntireRow(false)
 264     , m_supportsItemExpanding(false)
 265     , m_dirtyLayout(true)
 266     , m_dirtyContent(true)
 267     , m_dirtyContentRoles()
 268     , m_layout(IconsLayout)
 269     , m_pixmapPos()
 270     , m_pixmap()
 271     , m_scaledPixmapSize()
 272     , m_columnWidthSum()
 273     , m_iconRect()
 274     , m_hoverPixmap()
 275     , m_textRect()
 276     , m_sortedVisibleRoles()
 277     , m_expansionArea()
 278     , m_customTextColor()
 279     , m_additionalInfoTextColor()
 280     , m_overlays()
 281     , m_rating()
 282     , m_roleEditor(nullptr)
 283     , m_oldRoleEditor(nullptr)
 284 {
 285 }
 286
 287 KStandardItemListWidget::~KStandardItemListWidget()
 288 {
 289     qDeleteAll(m_textInfo);
 290     m_textInfo.clear();
 291
 292     if (m_roleEditor) {
 293         m_roleEditor->deleteLater();
 294     }
 295
 296     if (m_oldRoleEditor) {
 297         m_oldRoleEditor->deleteLater();
 298     }
 299 }
 300
 301 void KStandardItemListWidget::setLayout(Layout layout)
 302 {
 303     if (m_layout != layout) {
 304         m_layout = layout;
 305         m_dirtyLayout = true;
 306         updateAdditionalInfoTextColor();
 307         update();
 308     }
 309 }
 310
 311 void KStandardItemListWidget::setHighlightEntireRow(bool highlightEntireRow)
 312 {
 313     if (m_highlightEntireRow != highlightEntireRow) {
 314         m_highlightEntireRow = highlightEntireRow;
 315         m_dirtyLayout = true;
 316         update();
 317     }
 318 }
 319
 320 bool KStandardItemListWidget::highlightEntireRow() const
 321 {
 322     return m_highlightEntireRow;
 323 }
 324
 325 void KStandardItemListWidget::setSupportsItemExpanding(bool supportsItemExpanding)
 326 {
 327     if (m_supportsItemExpanding != supportsItemExpanding) {
 328         m_supportsItemExpanding = supportsItemExpanding;
 329         m_dirtyLayout = true;
 330         update();
 331     }
 332 }
 333
 334 bool KStandardItemListWidget::supportsItemExpanding() const
 335 {
 336     return m_supportsItemExpanding;
 337 }
 338
 339 void KStandardItemListWidget::paint(QPainter *painter, const QStyleOptionGraphicsItem *option, QWidget *widget)
 340 {
 341     const_cast<KStandardItemListWidget *>(this)->triggerCacheRefreshing();
 342
 343     KItemListWidget::paint(painter, option, widget);
 344
 345     if (!m_expansionArea.isEmpty()) {
 346         drawSiblingsInformation(painter);
 347     }
 348
 349     auto pixmap = isHovered() ? m_hoverPixmap : m_pixmap;
 350     if (!m_overlays.isEmpty()) {
 351         const qreal dpr = KItemViewsUtils::devicePixelRatio(this);
 352
 353         const bool iconOnTop = (m_layout == IconsLayout);
 354         const KItemListStyleOption &option = styleOption();
 355         const qreal padding = option.padding;
 356
 357         const int widgetIconSize = iconSize();
 358         const int maxIconWidth = iconOnTop ? size().width() - 2 * padding : widgetIconSize;
 359         const int maxIconHeight = widgetIconSize;
 360
 361         pixmap = addOverlays(pixmap, m_overlays, QSize(maxIconWidth, maxIconHeight), dpr);
 362     }
 363
 364     const KItemListStyleOption &itemListStyleOption = styleOption();
 365     if (isHovered() && !pixmap.isNull()) {
 366         if (hoverOpacity() < 1.0) {
 367             /*
 368              * Linear interpolation between pixmap and m_hoverPixmap.
 369              *
 370              * Note that this cannot be achieved by painting m_hoverPixmap over
 371              * pixmap, even if the opacities are adjusted. For details see
 372              * https://git.reviewboard.kde.org/r/109614/
 373              */
 374             // Paint pixmap1 so that pixmap1 = pixmap * (1.0 - hoverOpacity())
 375             QPixmap pixmap1(pixmap.size());
 376             pixmap1.setDevicePixelRatio(pixmap.devicePixelRatio());
 377             pixmap1.fill(Qt::transparent);
 378             {
 379                 QPainter p(&pixmap1);
 380                 p.setOpacity(1.0 - hoverOpacity());
 381                 p.drawPixmap(0, 0, pixmap);
 382             }
 383
 384             // Paint pixmap2 so that pixmap2 = m_hoverPixmap * hoverOpacity()
 385             QPixmap pixmap2(pixmap1.size());
 386             pixmap2.setDevicePixelRatio(pixmap1.devicePixelRatio());
 387             pixmap2.fill(Qt::transparent);
 388             {
 389                 QPainter p(&pixmap2);
 390                 p.setOpacity(hoverOpacity());
 391                 p.drawPixmap(0, 0, m_hoverPixmap);
 392             }
 393
 394             // Paint pixmap2 on pixmap1 using CompositionMode_Plus
 395             // Now pixmap1 = pixmap2 + pixmap * (1.0 - hoverOpacity())
 396             //             = m_hoverPixmap * hoverOpacity() + pixmap * (1.0 - hoverOpacity())
 397             {
 398                 QPainter p(&pixmap1);
 399                 p.setCompositionMode(QPainter::CompositionMode_Plus);
 400                 p.drawPixmap(0, 0, pixmap2);
 401             }
 402
 403             // Finally paint pixmap1 on the widget
 404             drawPixmap(painter, pixmap1);
 405         } else {
 406             drawPixmap(painter, pixmap);
 407         }
 408     } else if (!pixmap.isNull()) {
 409         drawPixmap(painter, pixmap);
 410     }
 411
 412     painter->setFont(m_customizedFont);
 413     painter->setPen(textColor(*widget));
 414     const TextInfo *textInfo = m_textInfo.value("text");
 415
 416     if (!textInfo) {
 417         // It seems that we can end up here even if m_textInfo does not contain
 418         // the key "text", see bug 306167. According to triggerCacheRefreshing(),
 419         // this can only happen if the index is negative. This can happen when
 420         // the item is about to be removed, see KItemListView::slotItemsRemoved().
 421         // TODO: try to reproduce the crash and find a better fix.
 422         return;
 423     }
 424
 425     painter->drawStaticText(textInfo->pos, textInfo->staticText);
 426
 427     bool clipAdditionalInfoBounds = false;
 428     if (m_supportsItemExpanding && m_sortedVisibleRoles.count() > 1) {
 429         // Prevent a possible overlapping of the additional-information-texts with the icon.
 430         // This will happen if the user has resized the width of the name-column to be very narrow while having folders expanded.
 431         // We only want to draw additional info text outside the area of the icon or expansion area, so we set a clip rect that does not contain the icon area.
 432         // This needs to work both for left-to-right as well as right-to-left layout directions.
 433         const TextInfo *potentiallyOverlappingRoleText = m_textInfo.value(m_sortedVisibleRoles[1]); // Only the first column after the name column can overlap.
 434         if (layoutDirection() == Qt::LeftToRight) { // In left-to-right languages the left end of text would overlap. This is mirrored for right-to-left.
 435             const qreal minX = m_iconRect.right() + 2 * itemListStyleOption.padding;
 436             if (potentiallyOverlappingRoleText->pos.x() < minX) {
 437                 clipAdditionalInfoBounds = true;
 438                 painter->save();
 439                 painter->setClipRect(minX, 0, size().width() - minX, size().height(), Qt::IntersectClip);
 440             }
 441         } else {
 442             const qreal maxX = m_iconRect.left() - 2 * itemListStyleOption.padding;
 443             if (potentiallyOverlappingRoleText->pos.x() + m_customizedFontMetrics.horizontalAdvance(potentiallyOverlappingRoleText->staticText.text()) > maxX) {
 444                 clipAdditionalInfoBounds = true;
 445                 painter->save();
 446                 painter->setClipRect(0, 0, maxX, size().height(), Qt::IntersectClip);
 447             }
 448         }
 449     }
 450
 451     painter->setPen(m_additionalInfoTextColor);
 452     painter->setFont(m_customizedFont);
 453
 454     for (int i = 1; i < m_sortedVisibleRoles.count(); ++i) {
 455         const TextInfo *textInfo = m_textInfo.value(m_sortedVisibleRoles[i]);
 456         painter->drawStaticText(textInfo->pos, textInfo->staticText);
 457     }
 458
 459     if (!m_rating.isNull()) {
 460         const TextInfo *ratingTextInfo = m_textInfo.value("rating");
 461         QPointF pos = ratingTextInfo->pos;
 462         const Qt::Alignment align = ratingTextInfo->staticText.textOption().alignment();
 463         if (align & Qt::AlignHCenter) {
 464             pos.rx() += (size().width() - m_rating.width() / m_rating.devicePixelRatioF()) / 2 - 2;
 465         }
 466         painter->drawPixmap(pos, m_rating);
 467     }
 468
 469     if (clipAdditionalInfoBounds) {
 470         painter->restore();
 471     }
 472
 473 #ifdef KSTANDARDITEMLISTWIDGET_DEBUG
 474     painter->setBrush(Qt::NoBrush);
 475     painter->setPen(Qt::green);
 476     painter->drawRect(m_iconRect);
 477
 478     painter->setPen(Qt::blue);
 479     painter->drawRect(m_textRect);
 480
 481     painter->setPen(Qt::red);
 482     painter->drawText(QPointF(0, m_customizedFontMetrics.height()), QString::number(index()));
 483     painter->drawRect(rect());
 484 #endif
 485 }
 486
 487 QRectF KStandardItemListWidget::iconRect() const
 488 {
 489     const_cast<KStandardItemListWidget *>(this)->triggerCacheRefreshing();
 490     return m_iconRect;
 491 }
 492
 493 QRectF KStandardItemListWidget::textRect() const
 494 {
 495     const_cast<KStandardItemListWidget *>(this)->triggerCacheRefreshing();
 496     return m_textRect;
 497 }
 498
 499 QRectF KStandardItemListWidget::textFocusRect() const
 500 {
 501     // In the compact- and details-layout a larger textRect() is returned to be aligned
 502     // with the iconRect(). This is useful to have a larger selection/hover-area
 503     // when having a quite large icon size but only one line of text. Still the
 504     // focus rectangle should be shown as narrow as possible around the text.
 505
 506     const_cast<KStandardItemListWidget *>(this)->triggerCacheRefreshing();
 507
 508     switch (m_layout) {
 509     case CompactLayout: {
 510         QRectF rect = m_textRect;
 511         const TextInfo *topText = m_textInfo.value(m_sortedVisibleRoles.first());
 512         const TextInfo *bottomText = m_textInfo.value(m_sortedVisibleRoles.last());
 513         rect.setTop(topText->pos.y());
 514         rect.setBottom(bottomText->pos.y() + bottomText->staticText.size().height());
 515         return rect;
 516     }
 517
 518     case DetailsLayout: {
 519         QRectF rect = m_textRect;
 520         const TextInfo *textInfo = m_textInfo.value(m_sortedVisibleRoles.first());
 521         rect.setTop(textInfo->pos.y());
 522         rect.setBottom(textInfo->pos.y() + textInfo->staticText.size().height());
 523
 524         const KItemListStyleOption &option = styleOption();
 525         if (option.extendedSelectionRegion) {
 526             const QString text = textInfo->staticText.text();
 527             rect.setWidth(m_customizedFontMetrics.horizontalAdvance(text) + 2 * option.padding);
 528         }
 529
 530         return rect;
 531     }
 532
 533     default:
 534         break;
 535     }
 536
 537     return m_textRect;
 538 }
 539
 540 QRectF KStandardItemListWidget::selectionRect() const
 541 {
 542     const_cast<KStandardItemListWidget *>(this)->triggerCacheRefreshing();
 543
 544     switch (m_layout) {
 545     case IconsLayout:
 546         return m_textRect;
 547
 548     case CompactLayout:
 549     case DetailsLayout: {
 550         const int padding = styleOption().padding;
 551         QRectF adjustedIconRect = iconRect().adjusted(-padding, -padding, padding, padding);
 552         QRectF result = adjustedIconRect | m_textRect;
 553         if (m_highlightEntireRow) {
 554             if (layoutDirection() == Qt::LeftToRight) {
 555                 result.setRight(leftPadding() + m_columnWidthSum);
 556             } else {
 557                 result.setLeft(size().width() - m_columnWidthSum - rightPadding());
 558             }
 559         }
 560         return result;
 561     }
 562
 563     default:
 564         Q_ASSERT(false);
 565         break;
 566     }
 567
 568     return m_textRect;
 569 }
 570
 571 QRectF KStandardItemListWidget::expansionToggleRect() const
 572 {
 573     const_cast<KStandardItemListWidget *>(this)->triggerCacheRefreshing();
 574     return m_isExpandable ? m_expansionArea : QRectF();
 575 }
 576
 577 QRectF KStandardItemListWidget::selectionToggleRect() const
 578 {
 579     const_cast<KStandardItemListWidget *>(this)->triggerCacheRefreshing();
 580
 581     const QRectF widgetIconRect = iconRect();
 582     const int widgetIconSize = iconSize();
 583     int toggleSize = KIconLoader::SizeSmall;
 584     if (widgetIconSize >= KIconLoader::SizeEnormous) {
 585         toggleSize = KIconLoader::SizeMedium;
 586     } else if (widgetIconSize >= KIconLoader::SizeLarge) {
 587         toggleSize = KIconLoader::SizeSmallMedium;
 588     }
 589
 590     QPointF pos = widgetIconRect.topLeft();
 591
 592     // If the selection toggle has a very small distance to the
 593     // widget borders, the size of the selection toggle will get
 594     // increased to prevent an accidental clicking of the item
 595     // when trying to hit the toggle.
 596     const int widgetHeight = size().height();
 597     const int widgetWidth = size().width();
 598     const int minMargin = 2;
 599
 600     if (toggleSize + minMargin * 2 >= widgetHeight) {
 601         pos.rx() -= (widgetHeight - toggleSize) / 2;
 602         toggleSize = widgetHeight;
 603         pos.setY(0);
 604     }
 605     if (toggleSize + minMargin * 2 >= widgetWidth) {
 606         pos.ry() -= (widgetWidth - toggleSize) / 2;
 607         toggleSize = widgetWidth;
 608         pos.setX(0);
 609     }
 610
 611     if (QApplication::isRightToLeft()) {
 612         pos.setX(widgetIconRect.right() - (pos.x() + toggleSize - widgetIconRect.left()));
 613     }
 614
 615     return QRectF(pos, QSizeF(toggleSize, toggleSize));
 616 }
 617
 618 QPixmap KStandardItemListWidget::createDragPixmap(const QStyleOptionGraphicsItem *option, QWidget *widget)
 619 {
 620     QPixmap pixmap = KItemListWidget::createDragPixmap(option, widget);
 621     if (m_layout != DetailsLayout) {
 622         return pixmap;
 623     }
 624
 625     // Only return the content of the text-column as pixmap
 626     const int leftClip = m_pixmapPos.x();
 627
 628     const TextInfo *textInfo = m_textInfo.value("text");
 629     const int rightClip = textInfo->pos.x() + textInfo->staticText.size().width() + 2 * styleOption().padding;
 630
 631     QPixmap clippedPixmap(rightClip - leftClip + 1, pixmap.height());
 632     clippedPixmap.fill(Qt::transparent);
 633
 634     QPainter painter(&clippedPixmap);
 635     painter.drawPixmap(-leftClip, 0, pixmap);
 636
 637     return clippedPixmap;
 638 }
 639
 640 void KStandardItemListWidget::startActivateSoonAnimation(int timeUntilActivation)
 641 {
 642     if (m_activateSoonAnimation) {
 643         m_activateSoonAnimation->stop(); // automatically DeleteWhenStopped
 644     }
 645
 646     m_activateSoonAnimation = new QVariantAnimation{this};
 647     m_activateSoonAnimation->setStartValue(0.0);
 648     m_activateSoonAnimation->setEndValue(1.0);
 649     m_activateSoonAnimation->setDuration(timeUntilActivation);
 650
 651     const QVariant originalIconName{value("iconName")};
 652     connect(m_activateSoonAnimation, &QVariantAnimation::valueChanged, this, [originalIconName, this](const QVariant &value) {
 653         auto progress = value.toFloat();
 654
 655         QVariant wantedIconName;
 656         if (progress < 0.333) {
 657             wantedIconName = "folder-open";
 658         } else if (progress < 0.666) {
 659             wantedIconName = originalIconName;
 660         } else {
 661             wantedIconName = "folder-open";
 662         }
 663
 664         QHash<QByteArray, QVariant> itemData{data()};
 665         if (itemData["iconName"] != wantedIconName) {
 666             itemData.insert("iconName", wantedIconName);
 667             setData(itemData);
 668             invalidateIconCache();
 669         }
 670     });
 671
 672     connect(m_activateSoonAnimation, &QObject::destroyed, this, [originalIconName, this]() {
 673         QHash<QByteArray, QVariant> itemData{data()};
 674         if (itemData["iconName"] == "folder-open") {
 675             itemData.insert("iconName", originalIconName);
 676             setData(itemData);
 677             invalidateIconCache();
 678         }
 679     });
 680
 681     m_activateSoonAnimation->start(QAbstractAnimation::DeleteWhenStopped);
 682 }
 683
 684 bool KStandardItemListWidget::isIconControlledByActivateSoonAnimation() const
 685 {
 686     return m_activateSoonAnimation && value("iconName") == "folder-open";
 687 }
 688
 689 KItemListWidgetInformant *KStandardItemListWidget::createInformant()
 690 {
 691     return new KStandardItemListWidgetInformant();
 692 }
 693
 694 void KStandardItemListWidget::invalidateCache()
 695 {
 696     m_dirtyLayout = true;
 697     m_dirtyContent = true;
 698 }
 699
 700 void KStandardItemListWidget::invalidateIconCache()
 701 {
 702     m_dirtyContent = true;
 703     m_dirtyContentRoles.insert("iconPixmap");
 704 }
 705
 706 void KStandardItemListWidget::refreshCache()
 707 {
 708 }
 709
 710 bool KStandardItemListWidget::isRoleRightAligned(const QByteArray &role) const
 711 {
 712     Q_UNUSED(role)
 713     return false;
 714 }
 715
 716 bool KStandardItemListWidget::isHidden() const
 717 {
 718     return false;
 719 }
 720
 721 QFont KStandardItemListWidget::customizedFont(const QFont &baseFont) const
 722 {
 723     return baseFont;
 724 }
 725
 726 QPalette::ColorRole KStandardItemListWidget::normalTextColorRole() const
 727 {
 728     return QPalette::Text;
 729 }
 730
 731 void KStandardItemListWidget::setTextColor(const QColor &color)
 732 {
 733     if (color != m_customTextColor) {
 734         m_customTextColor = color;
 735         updateAdditionalInfoTextColor();
 736         update();
 737     }
 738 }
 739
 740 QColor KStandardItemListWidget::textColor(const QWidget &widget) const
 741 {
 742     if (!isSelected()) {
 743         if (m_isHidden) {
 744             return m_additionalInfoTextColor;
 745         } else if (m_customTextColor.isValid()) {
 746             return m_customTextColor;
 747         }
 748     }
 749
 750     const QPalette::ColorGroup group = isActiveWindow() && widget.hasFocus() ? QPalette::Active : QPalette::Inactive;
 751     const QPalette::ColorRole role = isSelected() ? QPalette::HighlightedText : normalTextColorRole();
 752     return styleOption().palette.color(group, role);
 753 }
 754
 755 void KStandardItemListWidget::setOverlays(QHash<Qt::Corner, QString> &overlays)
 756 {
 757     if (overlays == m_overlays) {
 758         return;
 759     }
 760
 761     m_overlays = overlays;
 762     m_dirtyContent = true;
 763     m_dirtyContentRoles.insert("iconOverlays");
 764     update();
 765 }
 766
 767 QHash<Qt::Corner, QString> KStandardItemListWidget::overlays() const
 768 {
 769     return m_overlays;
 770 }
 771
 772 QString KStandardItemListWidget::roleText(const QByteArray &role, const QHash<QByteArray, QVariant> &values) const
 773 {
 774     return static_cast<const KStandardItemListWidgetInformant *>(informant())->roleText(role, values);
 775 }
 776
 777 void KStandardItemListWidget::dataChanged(const QHash<QByteArray, QVariant> &current, const QSet<QByteArray> &roles)
 778 {
 779     Q_UNUSED(current)
 780
 781     m_dirtyContent = true;
 782
 783     QSet<QByteArray> dirtyRoles;
 784     if (roles.isEmpty()) {
 785         const auto visibleRoles = this->visibleRoles();
 786         dirtyRoles = QSet<QByteArray>(visibleRoles.constBegin(), visibleRoles.constEnd());
 787     } else {
 788         dirtyRoles = roles;
 789     }
 790
 791     // The URL might have changed (i.e., if the sort order of the items has
 792     // been changed). Therefore, the "is cut" state must be updated.
 793     KFileItemClipboard *clipboard = KFileItemClipboard::instance();
 794     const QUrl itemUrl = data().value("url").toUrl();
 795     m_isCut = clipboard->isCut(itemUrl);
 796
 797     // The icon-state might depend from other roles and hence is
 798     // marked as dirty whenever a role has been changed
 799     dirtyRoles.insert("iconPixmap");
 800     dirtyRoles.insert("iconName");
 801
 802     QSetIterator<QByteArray> it(dirtyRoles);
 803     while (it.hasNext()) {
 804         const QByteArray &role = it.next();
 805         m_dirtyContentRoles.insert(role);
 806     }
 807 }
 808
 809 void KStandardItemListWidget::visibleRolesChanged(const QList<QByteArray> &current, const QList<QByteArray> &previous)
 810 {
 811     Q_UNUSED(previous)
 812     m_sortedVisibleRoles = current;
 813     m_dirtyLayout = true;
 814 }
 815
 816 void KStandardItemListWidget::columnWidthChanged(const QByteArray &role, qreal current, qreal previous)
 817 {
 818     Q_UNUSED(role)
 819     Q_UNUSED(current)
 820     Q_UNUSED(previous)
 821     m_dirtyLayout = true;
 822 }
 823
 824 void KStandardItemListWidget::sidePaddingChanged(qreal leftPaddingWidth, qreal rightPaddingWidth)
 825 {
 826     Q_UNUSED(leftPaddingWidth)
 827     Q_UNUSED(rightPaddingWidth)
 828     m_dirtyLayout = true;
 829 }
 830
 831 void KStandardItemListWidget::styleOptionChanged(const KItemListStyleOption &current, const KItemListStyleOption &previous)
 832 {
 833     KItemListWidget::styleOptionChanged(current, previous);
 834
 835     updateAdditionalInfoTextColor();
 836     m_dirtyLayout = true;
 837 }
 838
 839 void KStandardItemListWidget::hoveredChanged(bool hovered)
 840 {
 841     if (!hovered && m_activateSoonAnimation) {
 842         m_activateSoonAnimation->stop(); // automatically DeleteWhenStopped
 843     }
 844     m_dirtyLayout = true;
 845 }
 846
 847 void KStandardItemListWidget::selectedChanged(bool selected)
 848 {
 849     Q_UNUSED(selected)
 850     updateAdditionalInfoTextColor();
 851     m_dirtyContent = true;
 852 }
 853
 854 void KStandardItemListWidget::siblingsInformationChanged(const QBitArray &current, const QBitArray &previous)
 855 {
 856     Q_UNUSED(current)
 857     Q_UNUSED(previous)
 858     m_dirtyLayout = true;
 859 }
 860
 861 int KStandardItemListWidget::numberOfUnicodeCharactersIn(const QString &text)
 862 {
 863     int count = 0;
 864     QTextBoundaryFinder boundaryFinder(QTextBoundaryFinder::Grapheme, text);
 865     while (boundaryFinder.toNextBoundary() != -1) {
 866         ++count;
 867     }
 868     return count;
 869 }
 870
 871 int KStandardItemListWidget::selectionLength(const QString &text) const
 872 {
 873     return numberOfUnicodeCharactersIn(text);
 874 }
 875
 876 void KStandardItemListWidget::editedRoleChanged(const QByteArray &current, const QByteArray &previous)
 877 {
 878     Q_UNUSED(previous)
 879
 880     QGraphicsView *parent = scene()->views()[0];
 881     if (current.isEmpty() || !parent || current != "text") {
 882         if (m_roleEditor) {
 883             Q_EMIT roleEditingCanceled(index(), current, data().value(current));
 884             closeRoleEditor();
 885         }
 886         return;
 887     }
 888
 889     Q_ASSERT(!m_roleEditor);
 890
 891     const TextInfo *textInfo = m_textInfo.value("text");
 892
 893     m_roleEditor = new KItemListRoleEditor(parent);
 894     m_roleEditor->setRole(current);
 895     m_roleEditor->setAllowUpDownKeyChainEdit(m_layout != IconsLayout);
 896     m_roleEditor->setFont(styleOption().font);
 897
 898     const QString text = data().value(current).toString();
 899     m_roleEditor->setPlainText(text);
 900
 901     QTextOption textOption = textInfo->staticText.textOption();
 902     m_roleEditor->document()->setDefaultTextOption(textOption);
 903
 904     const int textSelectionLength = selectionLength(text);
 905
 906     if (textSelectionLength > 0) {
 907         QTextCursor cursor = m_roleEditor->textCursor();
 908         cursor.movePosition(QTextCursor::StartOfBlock);
 909         cursor.movePosition(QTextCursor::NextCharacter, QTextCursor::KeepAnchor, textSelectionLength);
 910         m_roleEditor->setTextCursor(cursor);
 911     }
 912
 913     connect(m_roleEditor, &KItemListRoleEditor::roleEditingCanceled, this, &KStandardItemListWidget::slotRoleEditingCanceled);
 914     connect(m_roleEditor, &KItemListRoleEditor::roleEditingFinished, this, &KStandardItemListWidget::slotRoleEditingFinished);
 915
 916     // Adjust the geometry of the editor
 917     QRectF rect = roleEditingRect(current);
 918     const int frameWidth = m_roleEditor->frameWidth();
 919     rect.adjust(-frameWidth, -frameWidth, frameWidth, frameWidth);
 920     rect.translate(pos());
 921     if (rect.right() > parent->width()) {
 922         rect.setWidth(parent->width() - rect.left());
 923     }
 924     m_roleEditor->setGeometry(rect.toRect());
 925     m_roleEditor->autoAdjustSize();
 926     m_roleEditor->show();
 927     m_roleEditor->setFocus();
 928 }
 929
 930 void KStandardItemListWidget::iconSizeChanged(int current, int previous)
 931 {
 932     KItemListWidget::iconSizeChanged(current, previous);
 933
 934     invalidateIconCache();
 935     triggerCacheRefreshing();
 936     update();
 937 }
 938
 939 void KStandardItemListWidget::resizeEvent(QGraphicsSceneResizeEvent *event)
 940 {
 941     if (m_roleEditor) {
 942         setEditedRole(QByteArray());
 943         Q_ASSERT(!m_roleEditor);
 944     }
 945
 946     KItemListWidget::resizeEvent(event);
 947
 948     m_dirtyLayout = true;
 949 }
 950
 951 void KStandardItemListWidget::showEvent(QShowEvent *event)
 952 {
 953     KItemListWidget::showEvent(event);
 954
 955     // Listen to changes of the clipboard to mark the item as cut/uncut
 956     KFileItemClipboard *clipboard = KFileItemClipboard::instance();
 957
 958     const QUrl itemUrl = data().value("url").toUrl();
 959     m_isCut = clipboard->isCut(itemUrl);
 960
 961     connect(clipboard, &KFileItemClipboard::cutItemsChanged, this, &KStandardItemListWidget::slotCutItemsChanged);
 962 }
 963
 964 void KStandardItemListWidget::hideEvent(QHideEvent *event)
 965 {
 966     disconnect(KFileItemClipboard::instance(), &KFileItemClipboard::cutItemsChanged, this, &KStandardItemListWidget::slotCutItemsChanged);
 967
 968     KItemListWidget::hideEvent(event);
 969 }
 970
 971 bool KStandardItemListWidget::event(QEvent *event)
 972 {
 973     if (event->type() == QEvent::WindowDeactivate || event->type() == QEvent::WindowActivate || event->type() == QEvent::PaletteChange) {
 974         m_dirtyContent = true;
 975     }
 976
 977     return KItemListWidget::event(event);
 978 }
 979
 980 void KStandardItemListWidget::finishRoleEditing()
 981 {
 982     if (!editedRole().isEmpty() && m_roleEditor) {
 983         slotRoleEditingFinished(editedRole(), KIO::encodeFileName(m_roleEditor->toPlainText()));
 984     }
 985 }
 986
 987 void KStandardItemListWidget::slotCutItemsChanged()
 988 {
 989     const QUrl itemUrl = data().value("url").toUrl();
 990     const bool isCut = KFileItemClipboard::instance()->isCut(itemUrl);
 991     if (m_isCut != isCut) {
 992         m_isCut = isCut;
 993         m_pixmap = QPixmap();
 994         m_dirtyContent = true;
 995         update();
 996     }
 997 }
 998
 999 void KStandardItemListWidget::slotRoleEditingCanceled(const QByteArray &role, const QVariant &value)
1000 {
1001     closeRoleEditor();
1002     Q_EMIT roleEditingCanceled(index(), role, value);
1003     setEditedRole(QByteArray());
1004 }
1005
1006 void KStandardItemListWidget::slotRoleEditingFinished(const QByteArray &role, const QVariant &value)
1007 {
1008     closeRoleEditor();
1009     Q_EMIT roleEditingFinished(index(), role, value);
1010     setEditedRole(QByteArray());
1011 }
1012
1013 void KStandardItemListWidget::triggerCacheRefreshing()
1014 {
1015     if ((!m_dirtyContent && !m_dirtyLayout) || index() < 0) {
1016         return;
1017     }
1018
1019     refreshCache();
1020
1021     const QHash<QByteArray, QVariant> values = data();
1022     m_isExpandable = m_supportsItemExpanding && values["isExpandable"].toBool();
1023     m_isHidden = isHidden();
1024     m_customizedFont = customizedFont(styleOption().font);
1025     m_customizedFontMetrics = QFontMetrics(m_customizedFont);
1026     m_columnWidthSum = std::accumulate(m_sortedVisibleRoles.begin(), m_sortedVisibleRoles.end(), qreal(), [this](qreal sum, const auto &role) {
1027         return sum + columnWidth(role);
1028     });
1029
1030     updateExpansionArea();
1031     updateTextsCache();
1032     updatePixmapCache();
1033     clearHoverCache();
1034
1035     m_dirtyLayout = false;
1036     m_dirtyContent = false;
1037     m_dirtyContentRoles.clear();
1038 }
1039
1040 void KStandardItemListWidget::updateExpansionArea()
1041 {
1042     if (m_supportsItemExpanding) {
1043         const QHash<QByteArray, QVariant> values = data();
1044         const int expandedParentsCount = values.value("expandedParentsCount", 0).toInt();
1045         if (expandedParentsCount >= 0) {
1046             const int widgetIconSize = iconSize();
1047             const qreal widgetHeight = size().height();
1048             const qreal inc = (widgetHeight - widgetIconSize) / 2;
1049             const qreal x = expandedParentsCount * widgetHeight + inc;
1050             const qreal y = inc;
1051             if (layoutDirection() == Qt::LeftToRight) {
1052                 const qreal leftPaddingWidth = m_highlightEntireRow ? leftPadding() : 0;
1053                 m_expansionArea = QRectF(leftPaddingWidth + x, y, widgetIconSize, widgetIconSize);
1054                 return;
1055             }
1056             const qreal rightPaddingWidth = m_highlightEntireRow ? rightPadding() : 0;
1057             m_expansionArea = QRectF(size().width() - rightPaddingWidth - x - widgetIconSize, y, widgetIconSize, widgetIconSize);
1058             return;
1059         }
1060     }
1061
1062     m_expansionArea = QRectF();
1063 }
1064
1065 void KStandardItemListWidget::updatePixmapCache()
1066 {
1067     // Precondition: Requires already updated m_textPos values to calculate
1068     // the remaining height when the alignment is vertical.
1069
1070     const QSizeF widgetSize = size();
1071     const bool iconOnTop = (m_layout == IconsLayout);
1072     const KItemListStyleOption &option = styleOption();
1073     const qreal padding = option.padding;
1074     const qreal dpr = KItemViewsUtils::devicePixelRatio(this);
1075
1076     const int widgetIconSize = iconSize();
1077     const int maxIconWidth = iconOnTop ? widgetSize.width() - 2 * padding : widgetIconSize;
1078     const int maxIconHeight = widgetIconSize;
1079
1080     const QHash<QByteArray, QVariant> values = data();
1081
1082     bool updatePixmap = (m_pixmap.width() != maxIconWidth || m_pixmap.height() != maxIconHeight);
1083     if (!updatePixmap && m_dirtyContent) {
1084         updatePixmap = m_dirtyContentRoles.isEmpty() || m_dirtyContentRoles.contains("iconPixmap") || m_dirtyContentRoles.contains("iconName")
1085             || m_dirtyContentRoles.contains("iconOverlays");
1086     }
1087
1088     if (updatePixmap) {
1089         m_pixmap = QPixmap();
1090
1091         int sequenceIndex = hoverSequenceIndex();
1092
1093         if (values.contains("hoverSequencePixmaps") && !isIconControlledByActivateSoonAnimation()) {
1094             // Use one of the hover sequence pixmaps instead of the default
1095             // icon pixmap.
1096
1097             const QVector<QPixmap> pixmaps = values["hoverSequencePixmaps"].value<QVector<QPixmap>>();
1098
1099             if (values.contains("hoverSequenceWraparoundPoint")) {
1100                 const float wap = values["hoverSequenceWraparoundPoint"].toFloat();
1101                 if (wap >= 1.0f) {
1102                     sequenceIndex %= static_cast<int>(wap);
1103                 }
1104             }
1105
1106             const int loadedIndex = qMax(qMin(sequenceIndex, pixmaps.size() - 1), 0);
1107
1108             if (loadedIndex != 0) {
1109                 m_pixmap = pixmaps[loadedIndex];
1110             }
1111         }
1112
1113         if (m_pixmap.isNull() && !isIconControlledByActivateSoonAnimation()) {
1114             m_pixmap = values["iconPixmap"].value<QPixmap>();
1115         }
1116
1117         if (m_pixmap.isNull()) {
1118             // Use the icon that fits to the MIME-type
1119             QString iconName = values["iconName"].toString();
1120             if (iconName.isEmpty()) {
1121                 // The icon-name has not been not resolved by KFileItemModelRolesUpdater,
1122                 // use a generic icon as fallback
1123                 iconName = QStringLiteral("unknown");
1124             }
1125             const bool hasFocus = scene()->views()[0]->parentWidget()->hasFocus();
1126             m_pixmap = pixmapForIcon(iconName,
1127                                      QSize(maxIconWidth, maxIconHeight),
1128                                      m_layout != IconsLayout && isActiveWindow() && isSelected() && hasFocus ? QIcon::Selected : QIcon::Normal);
1129
1130         } else {
1131             if (m_pixmap.width() / m_pixmap.devicePixelRatio() != maxIconWidth || m_pixmap.height() / m_pixmap.devicePixelRatio() != maxIconHeight) {
1132                 // A custom pixmap has been applied. Assure that the pixmap
1133                 // is scaled to the maximum available size.
1134                 KPixmapModifier::scale(m_pixmap, QSize(maxIconWidth, maxIconHeight) * dpr);
1135             }
1136         }
1137
1138         if (m_pixmap.isNull()) {
1139             m_hoverPixmap = QPixmap();
1140             return;
1141         }
1142
1143         if (m_isCut) {
1144             KIconEffect::toDisabled(m_pixmap);
1145         }
1146
1147         if (m_isHidden) {
1148             KIconEffect::semiTransparent(m_pixmap);
1149         }
1150
1151         if (m_layout == IconsLayout && isSelected()) {
1152             const QColor color = palette().brush(QPalette::Normal, QPalette::Highlight).color();
1153             QImage image = m_pixmap.toImage();
1154             if (image.isNull()) {
1155                 m_hoverPixmap = QPixmap();
1156                 return;
1157             }
1158             KIconEffect::colorize(image, color, 0.8f);
1159             m_pixmap = QPixmap::fromImage(image);
1160         }
1161     }
1162
1163     int scaledIconSize = 0;
1164     if (iconOnTop) {
1165         const TextInfo *textInfo = m_textInfo.value("text");
1166         scaledIconSize = static_cast<int>(textInfo->pos.y() - 2 * padding);
1167     } else {
1168         const int textRowsCount = (m_layout == CompactLayout) ? visibleRoles().count() : 1;
1169         const qreal requiredTextHeight = textRowsCount * m_customizedFontMetrics.height();
1170         scaledIconSize = (requiredTextHeight < maxIconHeight) ? widgetSize.height() - 2 * padding : maxIconHeight;
1171     }
1172
1173     const int maxScaledIconWidth = iconOnTop ? widgetSize.width() - 2 * padding : scaledIconSize;
1174     const int maxScaledIconHeight = scaledIconSize;
1175
1176     m_scaledPixmapSize = m_pixmap.size();
1177     m_scaledPixmapSize.scale(maxScaledIconWidth * dpr, maxScaledIconHeight * dpr, Qt::KeepAspectRatio);
1178     m_scaledPixmapSize = m_scaledPixmapSize / dpr;
1179
1180     if (iconOnTop) {
1181         // Center horizontally and align on bottom within the icon-area
1182         m_pixmapPos.setX((widgetSize.width() - m_scaledPixmapSize.width()) / 2.0);
1183         m_pixmapPos.setY(padding + scaledIconSize - m_scaledPixmapSize.height());
1184     } else {
1185         // Center horizontally and vertically within the icon-area
1186         const TextInfo *textInfo = m_textInfo.value("text");
1187         if (QApplication::isRightToLeft()) {
1188             m_pixmapPos.setX(m_textRect.right() + 2.0 * padding);
1189         } else {
1190             m_pixmapPos.setX(textInfo->pos.x() - 2.0 * padding - (scaledIconSize + m_scaledPixmapSize.width()) / 2.0);
1191         }
1192
1193         // Derive icon's vertical center from the center of the text frame, including
1194         // any necessary adjustment if the font's midline is offset from the frame center
1195         const qreal midlineShift = m_customizedFontMetrics.height() / 2.0 - m_customizedFontMetrics.descent() - m_customizedFontMetrics.capHeight() / 2.0;
1196         m_pixmapPos.setY(m_textRect.center().y() + midlineShift - m_scaledPixmapSize.height() / 2.0);
1197     }
1198
1199     if (m_layout == IconsLayout) {
1200         m_iconRect = QRectF(m_pixmapPos, QSizeF(m_scaledPixmapSize));
1201     } else {
1202         const qreal widthOffset = widgetIconSize - m_scaledPixmapSize.width();
1203         const qreal heightOffset = widgetIconSize - m_scaledPixmapSize.height();
1204         const QPointF squareIconPos(m_pixmapPos.x() - 0.5 * widthOffset, m_pixmapPos.y() - 0.5 * heightOffset);
1205         const QSizeF squareIconSize(widgetIconSize, widgetIconSize);
1206         m_iconRect = QRectF(squareIconPos, squareIconSize);
1207     }
1208
1209     // Prepare the pixmap that is used when the item gets hovered
1210     if (isHovered()) {
1211         m_hoverPixmap = m_pixmap;
1212         KIconEffect::toActive(m_hoverPixmap);
1213     } else if (hoverOpacity() <= 0.0) {
1214         // No hover animation is ongoing. Clear m_hoverPixmap to save memory.
1215         m_hoverPixmap = QPixmap();
1216     }
1217 }
1218
1219 void KStandardItemListWidget::updateTextsCache()
1220 {
1221     QTextOption textOption;
1222     switch (m_layout) {
1223     case IconsLayout:
1224         textOption.setWrapMode(QTextOption::WrapAtWordBoundaryOrAnywhere);
1225         textOption.setAlignment(Qt::AlignHCenter);
1226         break;
1227     case CompactLayout:
1228         textOption.setAlignment(QApplication::isRightToLeft() ? Qt::AlignRight : Qt::AlignLeft);
1229         textOption.setWrapMode(QTextOption::NoWrap);
1230         break;
1231     case DetailsLayout:
1232         textOption.setAlignment(Qt::AlignLeft);
1233         textOption.setWrapMode(QTextOption::NoWrap);
1234         break;
1235     default:
1236         Q_ASSERT(false);
1237         break;
1238     }
1239
1240     qDeleteAll(m_textInfo);
1241     m_textInfo.clear();
1242     for (int i = 0; i < m_sortedVisibleRoles.count(); ++i) {
1243         TextInfo *textInfo = new TextInfo();
1244         textInfo->staticText.setTextFormat(Qt::PlainText);
1245         textInfo->staticText.setPerformanceHint(QStaticText::AggressiveCaching);
1246         textInfo->staticText.setTextOption(textOption);
1247         m_textInfo.insert(m_sortedVisibleRoles[i], textInfo);
1248     }
1249
1250     switch (m_layout) {
1251     case IconsLayout:
1252         updateIconsLayoutTextCache();
1253         break;
1254     case CompactLayout:
1255         updateCompactLayoutTextCache();
1256         break;
1257     case DetailsLayout:
1258         updateDetailsLayoutTextCache();
1259         break;
1260     default:
1261         Q_ASSERT(false);
1262         break;
1263     }
1264
1265     const TextInfo *ratingTextInfo = m_textInfo.value("rating");
1266     if (ratingTextInfo) {
1267         // The text of the rating-role has been set to empty to get
1268         // replaced by a rating-image showing the rating as stars.
1269         const KItemListStyleOption &option = styleOption();
1270         QSizeF ratingSize = preferredRatingSize(option);
1271
1272         const qreal availableWidth = (m_layout == DetailsLayout) ? columnWidth("rating") - columnPadding(option) : size().width();
1273         if (ratingSize.width() > availableWidth) {
1274             ratingSize.rwidth() = availableWidth;
1275         }
1276         const qreal dpr = KItemViewsUtils::devicePixelRatio(this);
1277         m_rating = QPixmap(ratingSize.toSize() * dpr);
1278         m_rating.setDevicePixelRatio(dpr);
1279         m_rating.fill(Qt::transparent);
1280
1281         QPainter painter(&m_rating);
1282         const QRect rect(QPoint(0, 0), ratingSize.toSize());
1283         const int rating = data().value("rating").toInt();
1284         KRatingPainter::paintRating(&painter, rect, Qt::AlignJustify | Qt::AlignVCenter, rating);
1285     } else if (!m_rating.isNull()) {
1286         m_rating = QPixmap();
1287     }
1288 }
1289
1290 QString KStandardItemListWidget::elideText(QString text, qreal maxWidth) const
1291 {
1292     if (ContentDisplaySettings::elidingMode() == ContentDisplaySettings::ElidingMode::Middle) {
1293         return m_customizedFontMetrics.elidedText(text, Qt::ElideMiddle, maxWidth);
1294     }
1295
1296     if (ContentDisplaySettings::elidingMode() == ContentDisplaySettings::ElidingMode::Right) {
1297         qsizetype lastDotPosition = text.lastIndexOf(".");
1298         QString extension = text.mid(lastDotPosition);
1299
1300         if (m_customizedFontMetrics.horizontalAdvance(QStringLiteral("…") + extension) > maxWidth) {
1301             extension = "";
1302             lastDotPosition = text.size();
1303         }
1304
1305         maxWidth -= m_customizedFontMetrics.horizontalAdvance(extension);
1306         QString leftPart = m_customizedFontMetrics.elidedText(text.left(lastDotPosition), Qt::ElideRight, maxWidth);
1307
1308         return leftPart + extension;
1309     }
1310
1311     Q_UNREACHABLE();
1312     return text;
1313 }
1314
1315 QString KStandardItemListWidget::escapeString(const QString &text) const
1316 {
1317     QString escaped(text);
1318
1319     const QChar returnSymbol(0x21b5);
1320     escaped.replace('\n', returnSymbol);
1321
1322     return escaped;
1323 }
1324
1325 void KStandardItemListWidget::updateIconsLayoutTextCache()
1326 {
1327     //      +------+
1328     //      | Icon |
1329     //      +------+
1330     //
1331     //    Name role that
1332     // might get wrapped above
1333     //    several lines.
1334     //  Additional role 1
1335     //  Additional role 2
1336
1337     const QHash<QByteArray, QVariant> values = data();
1338
1339     const KItemListStyleOption &option = styleOption();
1340     const qreal padding = option.padding;
1341     const qreal maxWidth = size().width() - 2 * padding;
1342     const qreal lineSpacing = m_customizedFontMetrics.lineSpacing();
1343
1344     // Initialize properties for the "text" role. It will be used as anchor
1345     // for initializing the position of the other roles.
1346     TextInfo *nameTextInfo = m_textInfo.value("text");
1347     const QString nameText = KStringHandler::preProcessWrap(escapeString(values["text"].toString()));
1348     nameTextInfo->staticText.setText(nameText);
1349
1350     // Calculate the number of lines required for the name and the required width
1351     qreal nameWidth = 0;
1352     qreal nameHeight = 0;
1353     QTextLine line;
1354
1355     QTextLayout layout(nameTextInfo->staticText.text(), m_customizedFont);
1356     layout.setTextOption(nameTextInfo->staticText.textOption());
1357     layout.beginLayout();
1358     int nameLineIndex = 0;
1359     while ((line = layout.createLine()).isValid()) {
1360         line.setLineWidth(maxWidth);
1361         nameWidth = qMax(nameWidth, line.naturalTextWidth());
1362         nameHeight += line.height();
1363
1364         ++nameLineIndex;
1365         if (nameLineIndex == option.maxTextLines) {
1366             // The maximum number of textlines has been reached. If this is
1367             // the case provide an elided text if necessary.
1368             const int textLength = line.textStart() + line.textLength();
1369             if (textLength < nameText.length()) {
1370                 // Elide the last line of the text
1371                 qreal elidingWidth = maxWidth;
1372                 qreal lastLineWidth;
1373                 do {
1374                     QString lastTextLine = nameText.mid(line.textStart());
1375                     lastTextLine = elideText(lastTextLine, elidingWidth);
1376                     const QString elidedText = nameText.left(line.textStart()) + lastTextLine;
1377                     nameTextInfo->staticText.setText(elidedText);
1378
1379                     lastLineWidth = m_customizedFontMetrics.horizontalAdvance(lastTextLine);
1380
1381                     // We do the text eliding in a loop with decreasing width (1 px / iteration)
1382                     // to avoid problems related to different width calculation code paths
1383                     // within Qt. (see bug 337104)
1384                     elidingWidth -= 1.0;
1385                 } while (lastLineWidth > maxWidth);
1386
1387                 nameWidth = qMax(nameWidth, lastLineWidth);
1388             }
1389             break;
1390         }
1391     }
1392     layout.endLayout();
1393
1394     // Use one line for each additional information
1395     nameTextInfo->staticText.setTextWidth(maxWidth);
1396     nameTextInfo->pos = QPointF(padding, iconSize() + 2 * padding);
1397     m_textRect = QRectF(padding + (maxWidth - nameWidth) / 2, nameTextInfo->pos.y(), nameWidth, nameHeight);
1398
1399     // Calculate the position for each additional information
1400     qreal y = nameTextInfo->pos.y() + nameHeight;
1401     for (const QByteArray &role : std::as_const(m_sortedVisibleRoles)) {
1402         if (role == "text") {
1403             continue;
1404         }
1405
1406         const QString text = roleText(role, values);
1407         TextInfo *textInfo = m_textInfo.value(role);
1408         textInfo->staticText.setText(text);
1409
1410         qreal requiredWidth = 0;
1411
1412         QTextLayout layout(text, m_customizedFont);
1413         QTextOption textOption;
1414         textOption.setWrapMode(QTextOption::NoWrap);
1415         layout.setTextOption(textOption);
1416
1417         layout.beginLayout();
1418         QTextLine textLine = layout.createLine();
1419         if (textLine.isValid()) {
1420             textLine.setLineWidth(maxWidth);
1421             requiredWidth = textLine.naturalTextWidth();
1422             if (requiredWidth > maxWidth) {
1423                 const QString elidedText = m_customizedFontMetrics.elidedText(text, Qt::ElideRight, maxWidth);
1424                 textInfo->staticText.setText(elidedText);
1425                 requiredWidth = m_customizedFontMetrics.horizontalAdvance(elidedText);
1426             } else if (role == "rating") {
1427                 // Use the width of the rating pixmap, because the rating text is empty.
1428                 requiredWidth = m_rating.width() / m_rating.devicePixelRatioF();
1429             }
1430         }
1431         layout.endLayout();
1432
1433         textInfo->pos = QPointF(padding, y);
1434         textInfo->staticText.setTextWidth(maxWidth);
1435
1436         const QRectF textRect(padding + (maxWidth - requiredWidth) / 2, y, requiredWidth, lineSpacing);
1437
1438         // Ignore empty roles. Avoids a text rect taller than the area that actually contains text.
1439         if (!textRect.isEmpty()) {
1440             m_textRect |= textRect;
1441         }
1442
1443         y += lineSpacing;
1444     }
1445
1446     // Add a padding to the text rectangle
1447     m_textRect.adjust(-padding, -padding, padding, padding);
1448 }
1449
1450 void KStandardItemListWidget::updateCompactLayoutTextCache()
1451 {
1452     // +------+  Name role
1453     // | Icon |  Additional role 1
1454     // +------+  Additional role 2
1455
1456     const QHash<QByteArray, QVariant> values = data();
1457
1458     const KItemListStyleOption &option = styleOption();
1459     const qreal widgetHeight = size().height();
1460     const qreal lineSpacing = m_customizedFontMetrics.lineSpacing();
1461     const qreal textLinesHeight = qMax(visibleRoles().count(), 1) * lineSpacing;
1462
1463     qreal maximumRequiredTextWidth = 0;
1464     const qreal x = QApplication::isRightToLeft() ? option.padding : option.padding * 3 + iconSize();
1465     qreal y = qRound((widgetHeight - textLinesHeight) / 2);
1466     const qreal maxWidth = size().width() - iconSize() - 4 * option.padding;
1467     for (const QByteArray &role : std::as_const(m_sortedVisibleRoles)) {
1468         const QString text = escapeString(roleText(role, values));
1469         TextInfo *textInfo = m_textInfo.value(role);
1470         textInfo->staticText.setText(text);
1471
1472         qreal requiredWidth = m_customizedFontMetrics.horizontalAdvance(text);
1473         if (requiredWidth > maxWidth) {
1474             requiredWidth = maxWidth;
1475             if (role == "text") {
1476                 const QString elidedText = elideText(text, maxWidth);
1477                 textInfo->staticText.setText(elidedText);
1478             } else {
1479                 const QString elidedText = m_customizedFontMetrics.elidedText(text, Qt::ElideRight, maxWidth);
1480                 textInfo->staticText.setText(elidedText);
1481             }
1482         }
1483
1484         textInfo->pos = QPointF(x, y);
1485         textInfo->staticText.setTextWidth(maxWidth);
1486
1487         maximumRequiredTextWidth = qMax(maximumRequiredTextWidth, requiredWidth);
1488
1489         y += lineSpacing;
1490     }
1491
1492     m_textRect = QRectF(x - option.padding, 0, maximumRequiredTextWidth + 2 * option.padding, widgetHeight);
1493 }
1494
1495 void KStandardItemListWidget::updateDetailsLayoutTextCache()
1496 {
1497     // Precondition: Requires already updated m_expansionArea
1498     // to determine the left position.
1499
1500     // +------+
1501     // | Icon |  Name role   Additional role 1   Additional role 2
1502     // +------+
1503     // Mirror the above for right-to-left languages.
1504     const bool isLeftToRight = QApplication::layoutDirection() == Qt::LeftToRight;
1505     m_textRect = QRectF();
1506
1507     const KItemListStyleOption &option = styleOption();
1508     const QHash<QByteArray, QVariant> values = data();
1509
1510     const qreal widgetHeight = size().height();
1511     const int fontHeight = m_customizedFontMetrics.height();
1512
1513     const qreal columnWidthInc = columnPadding(option);
1514     qreal firstColumnInc = iconSize();
1515     if (m_supportsItemExpanding) {
1516         firstColumnInc += isLeftToRight ? (m_expansionArea.left() + m_expansionArea.right() + widgetHeight) / 2
1517                                         : ((size().width() - m_expansionArea.left()) + (size().width() - m_expansionArea.right()) + widgetHeight) / 2;
1518     } else {
1519         firstColumnInc += option.padding + (isLeftToRight ? leftPadding() : rightPadding());
1520     }
1521
1522     qreal x = firstColumnInc;
1523     const qreal y = qMax(qreal(option.padding), (widgetHeight - fontHeight) / 2);
1524
1525     for (const QByteArray &role : std::as_const(m_sortedVisibleRoles)) {
1526         QString text = roleText(role, values);
1527
1528         // Elide the text in case it does not fit into the available column-width
1529         qreal requiredWidth = m_customizedFontMetrics.horizontalAdvance(text);
1530         const qreal roleWidth = columnWidth(role);
1531         qreal availableTextWidth = roleWidth - columnWidthInc;
1532
1533         const bool isTextRole = (role == "text");
1534         if (isTextRole) {
1535             text = escapeString(text);
1536             availableTextWidth -= firstColumnInc - (isLeftToRight ? leftPadding() : rightPadding());
1537         }
1538
1539         if (requiredWidth > availableTextWidth) {
1540             if (isTextRole) {
1541                 text = elideText(text, availableTextWidth);
1542             } else {
1543                 text = m_customizedFontMetrics.elidedText(text, Qt::ElideRight, availableTextWidth);
1544             }
1545             requiredWidth = m_customizedFontMetrics.horizontalAdvance(text);
1546         }
1547
1548         TextInfo *textInfo = m_textInfo.value(role);
1549         textInfo->staticText.setText(text);
1550         textInfo->pos = QPointF(isLeftToRight ? (x + columnWidthInc / 2) : (size().width() - (x + columnWidthInc / 2) - requiredWidth), y);
1551         x += roleWidth;
1552
1553         if (isTextRole) {
1554             m_textRect = QRectF(textInfo->pos.x() - option.padding, 0, requiredWidth + 2 * option.padding, size().height());
1555
1556             // The column after the name should always be aligned on the same x-position independent
1557             // from the expansion-level shown in the name column
1558             x -= firstColumnInc - (isLeftToRight ? leftPadding() : rightPadding());
1559         } else if (isRoleRightAligned(role) && isLeftToRight) {
1560             textInfo->pos.rx() += roleWidth - requiredWidth - columnWidthInc;
1561         }
1562     }
1563 }
1564
1565 void KStandardItemListWidget::updateAdditionalInfoTextColor()
1566 {
1567     QColor c1;
1568     const bool hasFocus = scene()->views()[0]->parentWidget()->hasFocus();
1569     if (m_customTextColor.isValid()) {
1570         c1 = m_customTextColor;
1571     } else if (isSelected() && hasFocus && (m_layout != DetailsLayout || m_highlightEntireRow)) {
1572         // The detail text color needs to match the main text (HighlightedText) for the same level
1573         // of readability. We short circuit early here to avoid interpolating with another color.
1574         m_additionalInfoTextColor = styleOption().palette.color(QPalette::HighlightedText);
1575         return;
1576     } else {
1577         c1 = styleOption().palette.text().color();
1578     }
1579
1580     // For the color of the additional info the inactive text color
1581     // is not used as this might lead to unreadable text for some color schemes. Instead
1582     // the text color c1 is slightly mixed with the background color.
1583     const QColor c2 = styleOption().palette.base().color();
1584     const int p1 = 70;
1585     const int p2 = 100 - p1;
1586     m_additionalInfoTextColor =
1587         QColor((c1.red() * p1 + c2.red() * p2) / 100, (c1.green() * p1 + c2.green() * p2) / 100, (c1.blue() * p1 + c2.blue() * p2) / 100);
1588 }
1589
1590 QPixmap
1591 KStandardItemListWidget::addOverlays(const QPixmap &pixmap, const QHash<Qt::Corner, QString> &overlays, const QSize &size, qreal dpr, QIcon::Mode mode) const
1592 {
1593     // similar to KIconUtils::addOverlays, keep in sync preferrably
1594     if (overlays.isEmpty()) {
1595         return pixmap;
1596     }
1597
1598     int width = size.width();
1599     int height = size.height();
1600     const int iconSize = qMin(width, height);
1601
1602     // Determine the overlay icon
1603     int overlaySize;
1604     if (iconSize < 32) {
1605         overlaySize = 8;
1606     } else if (iconSize <= 48) {
1607         overlaySize = 16;
1608     } else if (iconSize <= 96) {
1609         overlaySize = 22;
1610     } else if (iconSize < 256) {
1611         overlaySize = 32;
1612     } else {
1613         overlaySize = 64;
1614     }
1615
1616     auto phyiscalSize = QSize(std::clamp(pixmap.width(), qFloor(2 * overlaySize * dpr), qFloor(size.width() * dpr)),
1617                               std::clamp(pixmap.height(), qFloor(2 * overlaySize * dpr), qFloor(size.height() * dpr)));
1618
1619     QPixmap output(phyiscalSize);
1620     output.setDevicePixelRatio(dpr);
1621     output.fill(Qt::transparent);
1622
1623     QPainter painter(&output);
1624     painter.drawPixmap(qFloor(phyiscalSize.width() / dpr / 2) - qFloor(pixmap.width() / pixmap.devicePixelRatio() / 2),
1625                        // align the icon to the bottom to match the behavior elsewhere
1626                        qFloor(phyiscalSize.height() / dpr) - qFloor(pixmap.height() / pixmap.devicePixelRatio()),
1627                        pixmap);
1628
1629     width = qCeil(phyiscalSize.width() / dpr);
1630     height = qCeil(phyiscalSize.height() / dpr);
1631
1632     // Iterate over stored overlays
1633     for (const auto &[corner, overlay] : overlays.asKeyValueRange()) {
1634         const QPixmap overlayPixmap = QIcon::fromTheme(overlay).pixmap(QSize{overlaySize, overlaySize}, dpr, mode);
1635         if (overlayPixmap.isNull()) {
1636             continue;
1637         }
1638
1639         QPoint startPoint;
1640         switch (corner) {
1641         case Qt::BottomLeftCorner:
1642             startPoint = QPoint{0, height - overlaySize};
1643             break;
1644         case Qt::BottomRightCorner:
1645             startPoint = QPoint{width - overlaySize, height - overlaySize};
1646             break;
1647         case Qt::TopRightCorner:
1648             startPoint = QPoint{width - overlaySize, 0};
1649             break;
1650         case Qt::TopLeftCorner:
1651             startPoint = QPoint{};
1652             break;
1653         }
1654         painter.drawPixmap(startPoint, overlayPixmap);
1655     }
1656
1657     return output;
1658 }
1659
1660 void KStandardItemListWidget::drawPixmap(QPainter *painter, const QPixmap &pixmap)
1661 {
1662     if (m_scaledPixmapSize != pixmap.size() / pixmap.devicePixelRatio()) {
1663         const qreal dpr = KItemViewsUtils::devicePixelRatio(this);
1664         QPixmap scaledPixmap = pixmap;
1665         KPixmapModifier::scale(scaledPixmap, m_scaledPixmapSize * dpr);
1666         scaledPixmap.setDevicePixelRatio(dpr);
1667         painter->drawPixmap(m_pixmapPos, scaledPixmap);
1668
1669 #ifdef KSTANDARDITEMLISTWIDGET_DEBUG
1670         painter->setPen(Qt::blue);
1671         painter->drawRect(QRectF(m_pixmapPos, QSizeF(m_scaledPixmapSize)));
1672 #endif
1673     } else {
1674         painter->drawPixmap(m_pixmapPos, pixmap);
1675     }
1676 }
1677
1678 void KStandardItemListWidget::drawSiblingsInformation(QPainter *painter)
1679 {
1680     const int siblingSize = size().height();
1681     const int x = (m_expansionArea.left() + m_expansionArea.right() - siblingSize) / 2;
1682     QRect siblingRect(x, 0, siblingSize, siblingSize);
1683
1684     bool isItemSibling = true;
1685
1686     const QBitArray siblings = siblingsInformation();
1687     QStyleOption option;
1688     const auto normalColor = option.palette.color(normalTextColorRole());
1689     const auto highlightColor = option.palette.color(expansionAreaHovered() ? QPalette::Highlight : normalTextColorRole());
1690     for (int i = siblings.count() - 1; i >= 0; --i) {
1691         option.rect = siblingRect;
1692         option.state = siblings.at(i) ? QStyle::State_Sibling : QStyle::State_None;
1693         if (isItemSibling) {
1694             option.state |= QStyle::State_Item;
1695             if (m_isExpandable) {
1696                 option.state |= QStyle::State_Children;
1697             }
1698             if (data().value("isExpanded").toBool()) {
1699                 option.state |= QStyle::State_Open;
1700             }
1701             option.palette.setColor(QPalette::Text, highlightColor);
1702             isItemSibling = false;
1703         } else {
1704             option.palette.setColor(QPalette::Text, normalColor);
1705         }
1706
1707         style()->drawPrimitive(QStyle::PE_IndicatorBranch, &option, painter);
1708
1709         siblingRect.translate(layoutDirection() == Qt::LeftToRight ? -siblingRect.width() : siblingRect.width(), 0);
1710     }
1711 }
1712
1713 QRectF KStandardItemListWidget::roleEditingRect(const QByteArray &role) const
1714 {
1715     const TextInfo *textInfo = m_textInfo.value(role);
1716     if (!textInfo) {
1717         return QRectF();
1718     }
1719
1720     QRectF rect(textInfo->pos, textInfo->staticText.size());
1721     if (m_layout == DetailsLayout) {
1722         rect.setWidth(columnWidth(role) - rect.x());
1723     }
1724
1725     return rect;
1726 }
1727
1728 void KStandardItemListWidget::closeRoleEditor()
1729 {
1730     disconnect(m_roleEditor, &KItemListRoleEditor::roleEditingCanceled, this, &KStandardItemListWidget::slotRoleEditingCanceled);
1731     disconnect(m_roleEditor, &KItemListRoleEditor::roleEditingFinished, this, &KStandardItemListWidget::slotRoleEditingFinished);
1732
1733     if (m_roleEditor->hasFocus()) {
1734         // If the editing was not ended by a FocusOut event, we have
1735         // to transfer the keyboard focus back to the KItemListContainer.
1736         scene()->views()[0]->parentWidget()->setFocus();
1737     }
1738
1739     if (m_oldRoleEditor) {
1740         m_oldRoleEditor->deleteLater();
1741     }
1742     m_oldRoleEditor = m_roleEditor;
1743     m_roleEditor->hide();
1744     m_roleEditor = nullptr;
1745 }
1746
1747 QPixmap KStandardItemListWidget::pixmapForIcon(const QString &name, const QSize &size, QIcon::Mode mode) const
1748 {
1749     static const QIcon fallbackIcon = QIcon::fromTheme(QStringLiteral("unknown"));
1750     const qreal dpr = KItemViewsUtils::devicePixelRatio(this);
1751
1752     int iconHeight = size.height();
1753     QSize iconSize = QSize(iconHeight, iconHeight);
1754
1755     const QString key = "KStandardItemListWidget:" % name % ":" % QString::number(iconHeight) % "@" % QString::number(dpr) % ":" % QString::number(mode);
1756     QPixmap pixmap;
1757
1758     if (!QPixmapCache::find(key, &pixmap)) {
1759         QIcon icon = QIcon::fromTheme(name);
1760         if (icon.isNull()) {
1761             icon = QIcon(name);
1762         }
1763         if (!icon.isNull()) {
1764             pixmap = icon.pixmap(iconSize, dpr, mode);
1765         }
1766         if (pixmap.isNull()) {
1767             icon = fallbackIcon;
1768             pixmap = icon.pixmap(iconSize, dpr, mode);
1769         }
1770         if (pixmap.width() != iconHeight * dpr || pixmap.height() != iconHeight * dpr) {
1771             KPixmapModifier::scale(pixmap, iconSize * dpr);
1772         }
1773
1774         QPixmapCache::insert(key, pixmap);
1775     }
1776     pixmap.setDevicePixelRatio(dpr);
1777
1778     return pixmap;
1779 }
1780
1781 QSizeF KStandardItemListWidget::preferredRatingSize(const KItemListStyleOption &option)
1782 {
1783     const qreal height = option.fontMetrics.ascent();
1784     return QSizeF(height * 5, height);
1785 }
1786
1787 qreal KStandardItemListWidget::columnPadding(const KItemListStyleOption &option)
1788 {
1789     return option.padding * 6;
1790 }
1791
1792 #include "moc_kstandarditemlistwidget.cpp"