src/kitemviews/kstandarditemlistwidget.cpp

   1 /***************************************************************************
   2  *   Copyright (C) 2012 by Peter Penz <peter.penz19@gmail.com>             *
   3  *                                                                         *
   4  *   This program is free software; you can redistribute it and/or modify  *
   5  *   it under the terms of the GNU General Public License as published by  *
   6  *   the Free Software Foundation; either version 2 of the License, or     *
   7  *   (at your option) any later version.                                   *
   8  *                                                                         *
   9  *   This program is distributed in the hope that it will be useful,       *
  10  *   but WITHOUT ANY WARRANTY; without even the implied warranty of        *
  11  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the         *
  12  *   GNU General Public License for more details.                          *
  13  *                                                                         *
  14  *   You should have received a copy of the GNU General Public License     *
  15  *   along with this program; if not, write to the                         *
  16  *   Free Software Foundation, Inc.,                                       *
  17  *   51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA            *
  18  ***************************************************************************/
  19
  20 #include "kstandarditemlistwidget.h"
  21
  22 #include "kfileitemlistview.h"
  23 #include "kfileitemmodel.h"
  24
  25 #include <QIcon>
  26 #include <KIconEffect>
  27 #include <KIconLoader>
  28 #include <KRatingPainter>
  29 #include <KStringHandler>
  30
  31 #include "private/kfileitemclipboard.h"
  32 #include "private/kitemlistroleeditor.h"
  33 #include "private/kpixmapmodifier.h"
  34
  35 #include <QGraphicsScene>
  36 #include <QGraphicsSceneResizeEvent>
  37 #include <QGraphicsView>
  38 #include <QPainter>
  39 #include <QStyleOption>
  40 #include <QTextLayout>
  41 #include <QTextLine>
  42 #include <QPixmapCache>
  43 #include <QGuiApplication>
  44
  45 // #define KSTANDARDITEMLISTWIDGET_DEBUG
  46
  47 KStandardItemListWidgetInformant::KStandardItemListWidgetInformant() :
  48     KItemListWidgetInformant()
  49 {
  50 }
  51
  52 KStandardItemListWidgetInformant::~KStandardItemListWidgetInformant()
  53 {
  54 }
  55
  56 void KStandardItemListWidgetInformant::calculateItemSizeHints(QVector<qreal>& logicalHeightHints, qreal& logicalWidthHint, const KItemListView* view) const
  57 {
  58     switch (static_cast<const KStandardItemListView*>(view)->itemLayout()) {
  59     case KStandardItemListWidget::IconsLayout:
  60         calculateIconsLayoutItemSizeHints(logicalHeightHints, logicalWidthHint, view);
  61         break;
  62
  63     case KStandardItemListWidget::CompactLayout:
  64         calculateCompactLayoutItemSizeHints(logicalHeightHints, logicalWidthHint, view);
  65         break;
  66
  67     case KStandardItemListWidget::DetailsLayout:
  68         calculateDetailsLayoutItemSizeHints(logicalHeightHints, logicalWidthHint, view);
  69         break;
  70
  71     default:
  72         Q_ASSERT(false);
  73         break;
  74     }
  75 }
  76
  77 qreal KStandardItemListWidgetInformant::preferredRoleColumnWidth(const QByteArray& role,
  78                                                                  int index,
  79                                                                  const KItemListView* view) const
  80 {
  81     const QHash<QByteArray, QVariant> values = view->model()->data(index);
  82     const KItemListStyleOption& option = view->styleOption();
  83
  84     const QString text = roleText(role, values);
  85     qreal width = KStandardItemListWidget::columnPadding(option);
  86
  87     const QFontMetrics& normalFontMetrics = option.fontMetrics;
  88     const QFontMetrics linkFontMetrics(customizedFontForLinks(option.font));
  89
  90     if (role == "rating") {
  91         width += KStandardItemListWidget::preferredRatingSize(option).width();
  92     } else {
  93         // If current item is a link, we use the customized link font metrics instead of the normal font metrics.
  94         const QFontMetrics& fontMetrics = itemIsLink(index, view) ? linkFontMetrics : normalFontMetrics;
  95
  96         width += fontMetrics.width(text);
  97
  98         if (role == "text") {
  99             if (view->supportsItemExpanding()) {
 100                 // Increase the width by the expansion-toggle and the current expansion level
 101                 const int expandedParentsCount = values.value("expandedParentsCount", 0).toInt();
 102                 const qreal height = option.padding * 2 + qMax(option.iconSize, fontMetrics.height());
 103                 width += (expandedParentsCount + 1) * height;
 104             }
 105
 106             // Increase the width by the required space for the icon
 107             width += option.padding * 2 + option.iconSize;
 108         }
 109     }
 110
 111     return width;
 112 }
 113
 114 QString KStandardItemListWidgetInformant::itemText(int index, const KItemListView* view) const
 115 {
 116     return view->model()->data(index).value("text").toString();
 117 }
 118
 119 bool KStandardItemListWidgetInformant::itemIsLink(int index, const KItemListView* view) const
 120 {
 121     Q_UNUSED(index);
 122     Q_UNUSED(view);
 123     return false;
 124 }
 125
 126 QString KStandardItemListWidgetInformant::roleText(const QByteArray& role,
 127                                                    const QHash<QByteArray, QVariant>& values) const
 128 {
 129     if (role == "rating") {
 130         // Always use an empty text, as the rating is shown by the image m_rating.
 131         return QString();
 132     }
 133     return values.value(role).toString();
 134 }
 135
 136 QFont KStandardItemListWidgetInformant::customizedFontForLinks(const QFont& baseFont) const
 137 {
 138     return baseFont;
 139 }
 140
 141 void KStandardItemListWidgetInformant::calculateIconsLayoutItemSizeHints(QVector<qreal>& logicalHeightHints, qreal& logicalWidthHint, const KItemListView* view) const
 142 {
 143     const KItemListStyleOption& option = view->styleOption();
 144     const QFont& normalFont = option.font;
 145     const int additionalRolesCount = qMax(view->visibleRoles().count() - 1, 0);
 146
 147     const qreal itemWidth = view->itemSize().width();
 148     const qreal maxWidth = itemWidth - 2 * option.padding;
 149     const qreal additionalRolesSpacing = additionalRolesCount * option.fontMetrics.lineSpacing();
 150     const qreal spacingAndIconHeight = option.iconSize + option.padding * 3;
 151
 152     const QFont linkFont = customizedFontForLinks(normalFont);
 153
 154     QTextOption textOption(Qt::AlignHCenter);
 155     textOption.setWrapMode(QTextOption::WrapAtWordBoundaryOrAnywhere);
 156
 157     for (int index = 0; index < logicalHeightHints.count(); ++index) {
 158         if (logicalHeightHints.at(index) > 0.0) {
 159             continue;
 160         }
 161
 162         // If the current item is a link, we use the customized link font instead of the normal font.
 163         const QFont& font = itemIsLink(index, view) ? linkFont : normalFont;
 164
 165         const QString& text = KStringHandler::preProcessWrap(itemText(index, view));
 166
 167         // Calculate the number of lines required for wrapping the name
 168         qreal textHeight = 0;
 169         QTextLayout layout(text, font);
 170         layout.setTextOption(textOption);
 171         layout.beginLayout();
 172         QTextLine line;
 173         int lineCount = 0;
 174         while ((line = layout.createLine()).isValid()) {
 175             line.setLineWidth(maxWidth);
 176             line.naturalTextWidth();
 177             textHeight += line.height();
 178
 179             ++lineCount;
 180             if (lineCount == option.maxTextLines) {
 181                 break;
 182             }
 183         }
 184         layout.endLayout();
 185
 186         // Add one line for each additional information
 187         textHeight += additionalRolesSpacing;
 188
 189         logicalHeightHints[index] = textHeight + spacingAndIconHeight;
 190     }
 191
 192     logicalWidthHint = itemWidth;
 193 }
 194
 195 void KStandardItemListWidgetInformant::calculateCompactLayoutItemSizeHints(QVector<qreal>& logicalHeightHints, qreal& logicalWidthHint, const KItemListView* view) const
 196 {
 197     const KItemListStyleOption& option = view->styleOption();
 198     const QFontMetrics& normalFontMetrics = option.fontMetrics;
 199     const int additionalRolesCount = qMax(view->visibleRoles().count() - 1, 0);
 200
 201     const QList<QByteArray>& visibleRoles = view->visibleRoles();
 202     const bool showOnlyTextRole = (visibleRoles.count() == 1) && (visibleRoles.first() == "text");
 203     const qreal maxWidth = option.maxTextWidth;
 204     const qreal paddingAndIconWidth = option.padding * 4 + option.iconSize;
 205     const qreal height = option.padding * 2 + qMax(option.iconSize, (1 + additionalRolesCount) * normalFontMetrics.lineSpacing());
 206
 207     const QFontMetrics linkFontMetrics(customizedFontForLinks(option.font));
 208
 209     for (int index = 0; index < logicalHeightHints.count(); ++index) {
 210         if (logicalHeightHints.at(index) > 0.0) {
 211             continue;
 212         }
 213
 214         // If the current item is a link, we use the customized link font metrics instead of the normal font metrics.
 215         const QFontMetrics& fontMetrics = itemIsLink(index, view) ? linkFontMetrics : normalFontMetrics;
 216
 217         // For each row exactly one role is shown. Calculate the maximum required width that is necessary
 218         // to show all roles without horizontal clipping.
 219         qreal maximumRequiredWidth = 0.0;
 220
 221         if (showOnlyTextRole) {
 222             maximumRequiredWidth = fontMetrics.width(itemText(index, view));
 223         } else {
 224             const QHash<QByteArray, QVariant>& values = view->model()->data(index);
 225             foreach (const QByteArray& role, visibleRoles) {
 226                 const QString& text = roleText(role, values);
 227                 const qreal requiredWidth = fontMetrics.width(text);
 228                 maximumRequiredWidth = qMax(maximumRequiredWidth, requiredWidth);
 229             }
 230         }
 231
 232         qreal width = paddingAndIconWidth + maximumRequiredWidth;
 233         if (maxWidth > 0 && width > maxWidth) {
 234             width = maxWidth;
 235         }
 236
 237         logicalHeightHints[index] = width;
 238     }
 239
 240     logicalWidthHint = height;
 241 }
 242
 243 void KStandardItemListWidgetInformant::calculateDetailsLayoutItemSizeHints(QVector<qreal>& logicalHeightHints, qreal& logicalWidthHint, const KItemListView* view) const
 244 {
 245     const KItemListStyleOption& option = view->styleOption();
 246     const qreal height = option.padding * 2 + qMax(option.iconSize, option.fontMetrics.height());
 247     logicalHeightHints.fill(height);
 248     logicalWidthHint = -1.0;
 249 }
 250
 251 KStandardItemListWidget::KStandardItemListWidget(KItemListWidgetInformant* informant, QGraphicsItem* parent) :
 252     KItemListWidget(informant, parent),
 253     m_isCut(false),
 254     m_isHidden(false),
 255     m_customizedFont(),
 256     m_customizedFontMetrics(m_customizedFont),
 257     m_isExpandable(false),
 258     m_supportsItemExpanding(false),
 259     m_dirtyLayout(true),
 260     m_dirtyContent(true),
 261     m_dirtyContentRoles(),
 262     m_layout(IconsLayout),
 263     m_pixmapPos(),
 264     m_pixmap(),
 265     m_scaledPixmapSize(),
 266     m_iconRect(),
 267     m_hoverPixmap(),
 268     m_textInfo(),
 269     m_textRect(),
 270     m_sortedVisibleRoles(),
 271     m_expansionArea(),
 272     m_customTextColor(),
 273     m_additionalInfoTextColor(),
 274     m_overlay(),
 275     m_rating(),
 276     m_roleEditor(0),
 277     m_oldRoleEditor(0)
 278 {
 279 }
 280
 281 KStandardItemListWidget::~KStandardItemListWidget()
 282 {
 283     qDeleteAll(m_textInfo);
 284     m_textInfo.clear();
 285
 286     if (m_roleEditor) {
 287         m_roleEditor->deleteLater();
 288     }
 289
 290     if (m_oldRoleEditor) {
 291         m_oldRoleEditor->deleteLater();
 292     }
 293 }
 294
 295 void KStandardItemListWidget::setLayout(Layout layout)
 296 {
 297     if (m_layout != layout) {
 298         m_layout = layout;
 299         m_dirtyLayout = true;
 300         updateAdditionalInfoTextColor();
 301         update();
 302     }
 303 }
 304
 305 KStandardItemListWidget::Layout KStandardItemListWidget::layout() const
 306 {
 307     return m_layout;
 308 }
 309
 310 void KStandardItemListWidget::setSupportsItemExpanding(bool supportsItemExpanding)
 311 {
 312     if (m_supportsItemExpanding != supportsItemExpanding) {
 313         m_supportsItemExpanding = supportsItemExpanding;
 314         m_dirtyLayout = true;
 315         update();
 316     }
 317 }
 318
 319 bool KStandardItemListWidget::supportsItemExpanding() const
 320 {
 321     return m_supportsItemExpanding;
 322 }
 323
 324 void KStandardItemListWidget::paint(QPainter* painter, const QStyleOptionGraphicsItem* option, QWidget* widget)
 325 {
 326     const_cast<KStandardItemListWidget*>(this)->triggerCacheRefreshing();
 327
 328     KItemListWidget::paint(painter, option, widget);
 329
 330     if (!m_expansionArea.isEmpty()) {
 331         drawSiblingsInformation(painter);
 332     }
 333
 334     const KItemListStyleOption& itemListStyleOption = styleOption();
 335     if (isHovered()) {
 336         if (hoverOpacity() < 1.0) {
 337             /*
 338              * Linear interpolation between m_pixmap and m_hoverPixmap.
 339              *
 340              * Note that this cannot be achieved by painting m_hoverPixmap over
 341              * m_pixmap, even if the opacities are adjusted. For details see
 342              * https://git.reviewboard.kde.org/r/109614/
 343              */
 344             // Paint pixmap1 so that pixmap1 = m_pixmap * (1.0 - hoverOpacity())
 345             QPixmap pixmap1(m_pixmap.size());
 346             pixmap1.setDevicePixelRatio(m_pixmap.devicePixelRatio());
 347             pixmap1.fill(Qt::transparent);
 348             {
 349                 QPainter p(&pixmap1);
 350                 p.setOpacity(1.0 - hoverOpacity());
 351                 p.drawPixmap(0, 0, m_pixmap);
 352             }
 353
 354             // Paint pixmap2 so that pixmap2 = m_hoverPixmap * hoverOpacity()
 355             QPixmap pixmap2(pixmap1.size());
 356             pixmap2.setDevicePixelRatio(pixmap1.devicePixelRatio());
 357             pixmap2.fill(Qt::transparent);
 358             {
 359                 QPainter p(&pixmap2);
 360                 p.setOpacity(hoverOpacity());
 361                 p.drawPixmap(0, 0, m_hoverPixmap);
 362             }
 363
 364             // Paint pixmap2 on pixmap1 using CompositionMode_Plus
 365             // Now pixmap1 = pixmap2 + m_pixmap * (1.0 - hoverOpacity())
 366             //             = m_hoverPixmap * hoverOpacity() + m_pixmap * (1.0 - hoverOpacity())
 367             {
 368                 QPainter p(&pixmap1);
 369                 p.setCompositionMode(QPainter::CompositionMode_Plus);
 370                 p.drawPixmap(0, 0, pixmap2);
 371             }
 372
 373             // Finally paint pixmap1 on the widget
 374             drawPixmap(painter, pixmap1);
 375         } else {
 376             drawPixmap(painter, m_hoverPixmap);
 377         }
 378     } else {
 379         drawPixmap(painter, m_pixmap);
 380     }
 381
 382     painter->setFont(m_customizedFont);
 383     painter->setPen(textColor());
 384     const TextInfo* textInfo = m_textInfo.value("text");
 385
 386     if (!textInfo) {
 387         // It seems that we can end up here even if m_textInfo does not contain
 388         // the key "text", see bug 306167. According to triggerCacheRefreshing(),
 389         // this can only happen if the index is negative. This can happen when
 390         // the item is about to be removed, see KItemListView::slotItemsRemoved().
 391         // TODO: try to reproduce the crash and find a better fix.
 392         return;
 393     }
 394
 395     painter->drawStaticText(textInfo->pos, textInfo->staticText);
 396
 397     bool clipAdditionalInfoBounds = false;
 398     if (m_supportsItemExpanding) {
 399         // Prevent a possible overlapping of the additional-information texts
 400         // with the icon. This can happen if the user has minimized the width
 401         // of the name-column to a very small value.
 402         const qreal minX = m_pixmapPos.x() + m_pixmap.width() + 4 * itemListStyleOption.padding;
 403         if (textInfo->pos.x() + columnWidth("text") > minX) {
 404             clipAdditionalInfoBounds = true;
 405             painter->save();
 406             painter->setClipRect(minX, 0, size().width() - minX, size().height(), Qt::IntersectClip);
 407         }
 408     }
 409
 410     painter->setPen(m_additionalInfoTextColor);
 411     painter->setFont(m_customizedFont);
 412
 413     for (int i = 1; i < m_sortedVisibleRoles.count(); ++i) {
 414         const TextInfo* textInfo = m_textInfo.value(m_sortedVisibleRoles[i]);
 415         painter->drawStaticText(textInfo->pos, textInfo->staticText);
 416     }
 417
 418     if (!m_rating.isNull()) {
 419         const TextInfo* ratingTextInfo = m_textInfo.value("rating");
 420         QPointF pos = ratingTextInfo->pos;
 421         const Qt::Alignment align = ratingTextInfo->staticText.textOption().alignment();
 422         if (align & Qt::AlignHCenter) {
 423             pos.rx() += (size().width() - m_rating.width()) / 2 - 2;
 424         }
 425         painter->drawPixmap(pos, m_rating);
 426     }
 427
 428     if (clipAdditionalInfoBounds) {
 429         painter->restore();
 430     }
 431
 432 #ifdef KSTANDARDITEMLISTWIDGET_DEBUG
 433     painter->setBrush(Qt::NoBrush);
 434     painter->setPen(Qt::green);
 435     painter->drawRect(m_iconRect);
 436
 437     painter->setPen(Qt::blue);
 438     painter->drawRect(m_textRect);
 439
 440     painter->setPen(Qt::red);
 441     painter->drawText(QPointF(0, m_customizedFontMetrics.height()), QString::number(index()));
 442     painter->drawRect(rect());
 443 #endif
 444 }
 445
 446 QRectF KStandardItemListWidget::iconRect() const
 447 {
 448     const_cast<KStandardItemListWidget*>(this)->triggerCacheRefreshing();
 449     return m_iconRect;
 450 }
 451
 452 QRectF KStandardItemListWidget::textRect() const
 453 {
 454     const_cast<KStandardItemListWidget*>(this)->triggerCacheRefreshing();
 455     return m_textRect;
 456 }
 457
 458 QRectF KStandardItemListWidget::textFocusRect() const
 459 {
 460     // In the compact- and details-layout a larger textRect() is returned to be aligned
 461     // with the iconRect(). This is useful to have a larger selection/hover-area
 462     // when having a quite large icon size but only one line of text. Still the
 463     // focus rectangle should be shown as narrow as possible around the text.
 464
 465     const_cast<KStandardItemListWidget*>(this)->triggerCacheRefreshing();
 466
 467     switch (m_layout) {
 468     case CompactLayout: {
 469         QRectF rect = m_textRect;
 470         const TextInfo* topText    = m_textInfo.value(m_sortedVisibleRoles.first());
 471         const TextInfo* bottomText = m_textInfo.value(m_sortedVisibleRoles.last());
 472         rect.setTop(topText->pos.y());
 473         rect.setBottom(bottomText->pos.y() + bottomText->staticText.size().height());
 474         return rect;
 475     }
 476
 477     case DetailsLayout: {
 478         QRectF rect = m_textRect;
 479         const TextInfo* textInfo = m_textInfo.value(m_sortedVisibleRoles.first());
 480         rect.setTop(textInfo->pos.y());
 481         rect.setBottom(textInfo->pos.y() + textInfo->staticText.size().height());
 482
 483         const KItemListStyleOption& option = styleOption();
 484         if (option.extendedSelectionRegion) {
 485             const QString text = textInfo->staticText.text();
 486             rect.setWidth(m_customizedFontMetrics.width(text) + 2 * option.padding);
 487         }
 488
 489         return rect;
 490     }
 491
 492     default:
 493         break;
 494     }
 495
 496     return m_textRect;
 497 }
 498
 499 QRectF KStandardItemListWidget::selectionRect() const
 500 {
 501     const_cast<KStandardItemListWidget*>(this)->triggerCacheRefreshing();
 502
 503     switch (m_layout) {
 504     case IconsLayout:
 505         return m_textRect;
 506
 507     case CompactLayout:
 508     case DetailsLayout: {
 509         const int padding = styleOption().padding;
 510         QRectF adjustedIconRect = iconRect().adjusted(-padding, -padding, padding, padding);
 511         return adjustedIconRect | m_textRect;
 512     }
 513
 514     default:
 515         Q_ASSERT(false);
 516         break;
 517     }
 518
 519     return m_textRect;
 520 }
 521
 522 QRectF KStandardItemListWidget::expansionToggleRect() const
 523 {
 524     const_cast<KStandardItemListWidget*>(this)->triggerCacheRefreshing();
 525     return m_isExpandable ? m_expansionArea : QRectF();
 526 }
 527
 528 QRectF KStandardItemListWidget::selectionToggleRect() const
 529 {
 530     const_cast<KStandardItemListWidget*>(this)->triggerCacheRefreshing();
 531
 532     const int iconHeight = styleOption().iconSize;
 533
 534     int toggleSize = KIconLoader::SizeSmall;
 535     if (iconHeight >= KIconLoader::SizeEnormous) {
 536         toggleSize = KIconLoader::SizeMedium;
 537     } else if (iconHeight >= KIconLoader::SizeLarge) {
 538         toggleSize = KIconLoader::SizeSmallMedium;
 539     }
 540
 541     QPointF pos = iconRect().topLeft();
 542
 543     // If the selection toggle has a very small distance to the
 544     // widget borders, the size of the selection toggle will get
 545     // increased to prevent an accidental clicking of the item
 546     // when trying to hit the toggle.
 547     const int widgetHeight = size().height();
 548     const int widgetWidth = size().width();
 549     const int minMargin = 2;
 550
 551     if (toggleSize + minMargin * 2 >= widgetHeight) {
 552         pos.rx() -= (widgetHeight - toggleSize) / 2;
 553         toggleSize = widgetHeight;
 554         pos.setY(0);
 555     }
 556     if (toggleSize + minMargin * 2 >= widgetWidth) {
 557         pos.ry() -= (widgetWidth - toggleSize) / 2;
 558         toggleSize = widgetWidth;
 559         pos.setX(0);
 560     }
 561
 562     return QRectF(pos, QSizeF(toggleSize, toggleSize));
 563 }
 564
 565 QPixmap KStandardItemListWidget::createDragPixmap(const QStyleOptionGraphicsItem* option,
 566                                                   QWidget* widget)
 567 {
 568     QPixmap pixmap = KItemListWidget::createDragPixmap(option, widget);
 569     if (m_layout != DetailsLayout) {
 570         return pixmap;
 571     }
 572
 573     // Only return the content of the text-column as pixmap
 574     const int leftClip = m_pixmapPos.x();
 575
 576     const TextInfo* textInfo = m_textInfo.value("text");
 577     const int rightClip = textInfo->pos.x() +
 578                           textInfo->staticText.size().width() +
 579                           2 * styleOption().padding;
 580
 581     QPixmap clippedPixmap(rightClip - leftClip + 1, pixmap.height());
 582     clippedPixmap.fill(Qt::transparent);
 583
 584     QPainter painter(&clippedPixmap);
 585     painter.drawPixmap(-leftClip, 0, pixmap);
 586
 587     return clippedPixmap;
 588 }
 589
 590
 591 KItemListWidgetInformant* KStandardItemListWidget::createInformant()
 592 {
 593     return new KStandardItemListWidgetInformant();
 594 }
 595
 596 void KStandardItemListWidget::invalidateCache()
 597 {
 598     m_dirtyLayout = true;
 599     m_dirtyContent = true;
 600 }
 601
 602 void KStandardItemListWidget::refreshCache()
 603 {
 604 }
 605
 606 bool KStandardItemListWidget::isRoleRightAligned(const QByteArray& role) const
 607 {
 608     Q_UNUSED(role);
 609     return false;
 610 }
 611
 612 bool KStandardItemListWidget::isHidden() const
 613 {
 614     return false;
 615 }
 616
 617 QFont KStandardItemListWidget::customizedFont(const QFont& baseFont) const
 618 {
 619     return baseFont;
 620 }
 621
 622 QPalette::ColorRole KStandardItemListWidget::normalTextColorRole() const
 623 {
 624     return QPalette::Text;
 625 }
 626
 627 void KStandardItemListWidget::setTextColor(const QColor& color)
 628 {
 629     if (color != m_customTextColor) {
 630         m_customTextColor = color;
 631         updateAdditionalInfoTextColor();
 632         update();
 633     }
 634 }
 635
 636 QColor KStandardItemListWidget::textColor() const
 637 {
 638     if (!isSelected()) {
 639         if (m_isHidden) {
 640             return m_additionalInfoTextColor;
 641         } else if (m_customTextColor.isValid()) {
 642             return m_customTextColor;
 643         }
 644     }
 645
 646     const QPalette::ColorGroup group = isActiveWindow() ? QPalette::Active : QPalette::Inactive;
 647     const QPalette::ColorRole role = isSelected() ? QPalette::HighlightedText : normalTextColorRole();
 648     return styleOption().palette.color(group, role);
 649 }
 650
 651 void KStandardItemListWidget::setOverlay(const QPixmap& overlay)
 652 {
 653     m_overlay = overlay;
 654     m_dirtyContent = true;
 655     update();
 656 }
 657
 658 QPixmap KStandardItemListWidget::overlay() const
 659 {
 660     return m_overlay;
 661 }
 662
 663
 664 QString KStandardItemListWidget::roleText(const QByteArray& role,
 665                                           const QHash<QByteArray, QVariant>& values) const
 666 {
 667     return static_cast<const KStandardItemListWidgetInformant*>(informant())->roleText(role, values);
 668 }
 669
 670 void KStandardItemListWidget::dataChanged(const QHash<QByteArray, QVariant>& current,
 671                                           const QSet<QByteArray>& roles)
 672 {
 673     Q_UNUSED(current);
 674
 675     m_dirtyContent = true;
 676
 677     QSet<QByteArray> dirtyRoles;
 678     if (roles.isEmpty()) {
 679         dirtyRoles = visibleRoles().toSet();
 680     } else {
 681         dirtyRoles = roles;
 682     }
 683
 684     // The URL might have changed (i.e., if the sort order of the items has
 685     // been changed). Therefore, the "is cut" state must be updated.
 686     KFileItemClipboard* clipboard = KFileItemClipboard::instance();
 687     const QUrl itemUrl = data().value("url").toUrl();
 688     m_isCut = clipboard->isCut(itemUrl);
 689
 690     // The icon-state might depend from other roles and hence is
 691     // marked as dirty whenever a role has been changed
 692     dirtyRoles.insert("iconPixmap");
 693     dirtyRoles.insert("iconName");
 694
 695     QSetIterator<QByteArray> it(dirtyRoles);
 696     while (it.hasNext()) {
 697         const QByteArray& role = it.next();
 698         m_dirtyContentRoles.insert(role);
 699     }
 700 }
 701
 702 void KStandardItemListWidget::visibleRolesChanged(const QList<QByteArray>& current,
 703                                               const QList<QByteArray>& previous)
 704 {
 705     Q_UNUSED(previous);
 706     m_sortedVisibleRoles = current;
 707     m_dirtyLayout = true;
 708 }
 709
 710 void KStandardItemListWidget::columnWidthChanged(const QByteArray& role,
 711                                              qreal current,
 712                                              qreal previous)
 713 {
 714     Q_UNUSED(role);
 715     Q_UNUSED(current);
 716     Q_UNUSED(previous);
 717     m_dirtyLayout = true;
 718 }
 719
 720 void KStandardItemListWidget::styleOptionChanged(const KItemListStyleOption& current,
 721                                              const KItemListStyleOption& previous)
 722 {
 723     Q_UNUSED(current);
 724     Q_UNUSED(previous);
 725     updateAdditionalInfoTextColor();
 726     m_dirtyLayout = true;
 727 }
 728
 729 void KStandardItemListWidget::hoveredChanged(bool hovered)
 730 {
 731     Q_UNUSED(hovered);
 732     m_dirtyLayout = true;
 733 }
 734
 735 void KStandardItemListWidget::selectedChanged(bool selected)
 736 {
 737     Q_UNUSED(selected);
 738     updateAdditionalInfoTextColor();
 739     m_dirtyContent = true;
 740 }
 741
 742 void KStandardItemListWidget::siblingsInformationChanged(const QBitArray& current, const QBitArray& previous)
 743 {
 744     Q_UNUSED(current);
 745     Q_UNUSED(previous);
 746     m_dirtyLayout = true;
 747 }
 748
 749 int KStandardItemListWidget::selectionLength(const QString& text) const
 750 {
 751     return text.length();
 752 }
 753
 754 void KStandardItemListWidget::editedRoleChanged(const QByteArray& current, const QByteArray& previous)
 755 {
 756     Q_UNUSED(previous);
 757
 758     QGraphicsView* parent = scene()->views()[0];
 759     if (current.isEmpty() || !parent || current != "text") {
 760         if (m_roleEditor) {
 761             emit roleEditingCanceled(index(), current, data().value(current));
 762
 763             disconnect(m_roleEditor, &KItemListRoleEditor::roleEditingCanceled,
 764                        this, &KStandardItemListWidget::slotRoleEditingCanceled);
 765             disconnect(m_roleEditor, &KItemListRoleEditor::roleEditingFinished,
 766                        this, &KStandardItemListWidget::slotRoleEditingFinished);
 767
 768             if (m_oldRoleEditor) {
 769                 m_oldRoleEditor->deleteLater();
 770             }
 771             m_oldRoleEditor = m_roleEditor;
 772             m_roleEditor->hide();
 773             m_roleEditor = 0;
 774         }
 775         return;
 776     }
 777
 778     Q_ASSERT(!m_roleEditor);
 779
 780     const TextInfo* textInfo = m_textInfo.value("text");
 781
 782     m_roleEditor = new KItemListRoleEditor(parent);
 783     m_roleEditor->setRole(current);
 784     m_roleEditor->setFont(styleOption().font);
 785
 786     const QString text = data().value(current).toString();
 787     m_roleEditor->setPlainText(text);
 788
 789     QTextOption textOption = textInfo->staticText.textOption();
 790     m_roleEditor->document()->setDefaultTextOption(textOption);
 791
 792     const int textSelectionLength = selectionLength(text);
 793
 794     if (textSelectionLength > 0) {
 795         QTextCursor cursor = m_roleEditor->textCursor();
 796         cursor.movePosition(QTextCursor::StartOfBlock);
 797         cursor.movePosition(QTextCursor::NextCharacter, QTextCursor::KeepAnchor, textSelectionLength);
 798         m_roleEditor->setTextCursor(cursor);
 799     }
 800
 801     connect(m_roleEditor, &KItemListRoleEditor::roleEditingCanceled,
 802             this, &KStandardItemListWidget::slotRoleEditingCanceled);
 803     connect(m_roleEditor, &KItemListRoleEditor::roleEditingFinished,
 804             this, &KStandardItemListWidget::slotRoleEditingFinished);
 805
 806     // Adjust the geometry of the editor
 807     QRectF rect = roleEditingRect(current);
 808     const int frameWidth = m_roleEditor->frameWidth();
 809     rect.adjust(-frameWidth, -frameWidth, frameWidth, frameWidth);
 810     rect.translate(pos());
 811     if (rect.right() > parent->width()) {
 812         rect.setWidth(parent->width() - rect.left());
 813     }
 814     m_roleEditor->setGeometry(rect.toRect());
 815     m_roleEditor->show();
 816     m_roleEditor->setFocus();
 817 }
 818
 819 void KStandardItemListWidget::resizeEvent(QGraphicsSceneResizeEvent* event)
 820 {
 821     if (m_roleEditor) {
 822         setEditedRole(QByteArray());
 823         Q_ASSERT(!m_roleEditor);
 824     }
 825
 826     KItemListWidget::resizeEvent(event);
 827
 828     m_dirtyLayout = true;
 829 }
 830
 831 void KStandardItemListWidget::showEvent(QShowEvent* event)
 832 {
 833     KItemListWidget::showEvent(event);
 834
 835     // Listen to changes of the clipboard to mark the item as cut/uncut
 836     KFileItemClipboard* clipboard = KFileItemClipboard::instance();
 837
 838     const QUrl itemUrl = data().value("url").toUrl();
 839     m_isCut = clipboard->isCut(itemUrl);
 840
 841     connect(clipboard, &KFileItemClipboard::cutItemsChanged,
 842             this, &KStandardItemListWidget::slotCutItemsChanged);
 843 }
 844
 845 void KStandardItemListWidget::hideEvent(QHideEvent* event)
 846 {
 847     disconnect(KFileItemClipboard::instance(), &KFileItemClipboard::cutItemsChanged,
 848                this, &KStandardItemListWidget::slotCutItemsChanged);
 849
 850     KItemListWidget::hideEvent(event);
 851 }
 852
 853 bool KStandardItemListWidget::event(QEvent *event)
 854 {
 855     if (event->type() == QEvent::WindowDeactivate || event->type() == QEvent::WindowActivate
 856             || event->type() == QEvent::PaletteChange) {
 857         m_dirtyContent = true;
 858     }
 859
 860     return KItemListWidget::event(event);
 861 }
 862
 863 void KStandardItemListWidget::finishRoleEditing()
 864 {
 865     if (!editedRole().isEmpty() && m_roleEditor) {
 866         slotRoleEditingFinished(editedRole(), KIO::encodeFileName(m_roleEditor->toPlainText()));
 867     }
 868 }
 869
 870 void KStandardItemListWidget::slotCutItemsChanged()
 871 {
 872     const QUrl itemUrl = data().value("url").toUrl();
 873     const bool isCut = KFileItemClipboard::instance()->isCut(itemUrl);
 874     if (m_isCut != isCut) {
 875         m_isCut = isCut;
 876         m_pixmap = QPixmap();
 877         m_dirtyContent = true;
 878         update();
 879     }
 880 }
 881
 882 void KStandardItemListWidget::slotRoleEditingCanceled(const QByteArray& role,
 883                                                       const QVariant& value)
 884 {
 885     closeRoleEditor();
 886     emit roleEditingCanceled(index(), role, value);
 887     setEditedRole(QByteArray());
 888 }
 889
 890 void KStandardItemListWidget::slotRoleEditingFinished(const QByteArray& role,
 891                                                       const QVariant& value)
 892 {
 893     closeRoleEditor();
 894     emit roleEditingFinished(index(), role, value);
 895     setEditedRole(QByteArray());
 896 }
 897
 898 void KStandardItemListWidget::triggerCacheRefreshing()
 899 {
 900     if ((!m_dirtyContent && !m_dirtyLayout) || index() < 0) {
 901         return;
 902     }
 903
 904     refreshCache();
 905
 906     const QHash<QByteArray, QVariant> values = data();
 907     m_isExpandable = m_supportsItemExpanding && values["isExpandable"].toBool();
 908     m_isHidden = isHidden();
 909     m_customizedFont = customizedFont(styleOption().font);
 910     m_customizedFontMetrics = QFontMetrics(m_customizedFont);
 911
 912     updateExpansionArea();
 913     updateTextsCache();
 914     updatePixmapCache();
 915
 916     m_dirtyLayout = false;
 917     m_dirtyContent = false;
 918     m_dirtyContentRoles.clear();
 919 }
 920
 921 void KStandardItemListWidget::updateExpansionArea()
 922 {
 923     if (m_supportsItemExpanding) {
 924         const QHash<QByteArray, QVariant> values = data();
 925         const int expandedParentsCount = values.value("expandedParentsCount", 0).toInt();
 926         if (expandedParentsCount >= 0) {
 927             const KItemListStyleOption& option = styleOption();
 928             const qreal widgetHeight = size().height();
 929             const qreal inc = (widgetHeight - option.iconSize) / 2;
 930             const qreal x = expandedParentsCount * widgetHeight + inc;
 931             const qreal y = inc;
 932             m_expansionArea = QRectF(x, y, option.iconSize, option.iconSize);
 933             return;
 934         }
 935     }
 936
 937     m_expansionArea = QRectF();
 938 }
 939
 940 void KStandardItemListWidget::updatePixmapCache()
 941 {
 942     // Precondition: Requires already updated m_textPos values to calculate
 943     // the remaining height when the alignment is vertical.
 944
 945     const QSizeF widgetSize = size();
 946     const bool iconOnTop = (m_layout == IconsLayout);
 947     const KItemListStyleOption& option = styleOption();
 948     const qreal padding = option.padding;
 949
 950     const int maxIconWidth = iconOnTop ? widgetSize.width() - 2 * padding : option.iconSize;
 951     const int maxIconHeight = option.iconSize;
 952
 953     const QHash<QByteArray, QVariant> values = data();
 954
 955     bool updatePixmap = (m_pixmap.width() != maxIconWidth || m_pixmap.height() != maxIconHeight);
 956     if (!updatePixmap && m_dirtyContent) {
 957         updatePixmap = m_dirtyContentRoles.isEmpty()
 958                        || m_dirtyContentRoles.contains("iconPixmap")
 959                        || m_dirtyContentRoles.contains("iconName")
 960                        || m_dirtyContentRoles.contains("iconOverlays");
 961     }
 962
 963     if (updatePixmap) {
 964         m_pixmap = values["iconPixmap"].value<QPixmap>();
 965         if (m_pixmap.isNull()) {
 966             // Use the icon that fits to the MIME-type
 967             QString iconName = values["iconName"].toString();
 968             if (iconName.isEmpty()) {
 969                 // The icon-name has not been not resolved by KFileItemModelRolesUpdater,
 970                 // use a generic icon as fallback
 971                 iconName = QStringLiteral("unknown");
 972             }
 973             const QStringList overlays = values["iconOverlays"].toStringList();
 974             m_pixmap = pixmapForIcon(iconName, overlays, maxIconHeight, isSelected() && isActiveWindow() ? QIcon::Selected : QIcon::Normal);
 975
 976         } else if (m_pixmap.width() / m_pixmap.devicePixelRatio() != maxIconWidth || m_pixmap.height() / m_pixmap.devicePixelRatio() != maxIconHeight) {
 977             // A custom pixmap has been applied. Assure that the pixmap
 978             // is scaled to the maximum available size.
 979             KPixmapModifier::scale(m_pixmap, QSize(maxIconWidth, maxIconHeight) * qApp->devicePixelRatio());
 980         }
 981
 982         if (m_isCut) {
 983             KIconEffect* effect = KIconLoader::global()->iconEffect();
 984             m_pixmap = effect->apply(m_pixmap, KIconLoader::Desktop, KIconLoader::DisabledState);
 985         }
 986
 987         if (m_isHidden) {
 988             KIconEffect::semiTransparent(m_pixmap);
 989         }
 990
 991         if (m_layout == IconsLayout && isSelected()) {
 992             const QColor color = palette().brush(QPalette::Normal, QPalette::Highlight).color();
 993             QImage image = m_pixmap.toImage();
 994             KIconEffect::colorize(image, color, 0.8f);
 995             m_pixmap = QPixmap::fromImage(image);
 996         }
 997     }
 998
 999     if (!m_overlay.isNull()) {
1000         QPainter painter(&m_pixmap);
1001         painter.drawPixmap(0, m_pixmap.height() - m_overlay.height(), m_overlay);
1002     }
1003
1004     int scaledIconSize = 0;
1005     if (iconOnTop) {
1006         const TextInfo* textInfo = m_textInfo.value("text");
1007         scaledIconSize = static_cast<int>(textInfo->pos.y() - 2 * padding);
1008     } else {
1009         const int textRowsCount = (m_layout == CompactLayout) ? visibleRoles().count() : 1;
1010         const qreal requiredTextHeight = textRowsCount * m_customizedFontMetrics.height();
1011         scaledIconSize = (requiredTextHeight < maxIconHeight) ?
1012                            widgetSize.height() - 2 * padding : maxIconHeight;
1013     }
1014
1015     const int maxScaledIconWidth = iconOnTop ? widgetSize.width() - 2 * padding : scaledIconSize;
1016     const int maxScaledIconHeight = scaledIconSize;
1017
1018     m_scaledPixmapSize = m_pixmap.size();
1019     m_scaledPixmapSize.scale(maxScaledIconWidth, maxScaledIconHeight, Qt::KeepAspectRatio);
1020
1021     if (iconOnTop) {
1022         // Center horizontally and align on bottom within the icon-area
1023         m_pixmapPos.setX((widgetSize.width() - m_scaledPixmapSize.width()) / 2);
1024         m_pixmapPos.setY(padding + scaledIconSize - m_scaledPixmapSize.height());
1025     } else {
1026         // Center horizontally and vertically within the icon-area
1027         const TextInfo* textInfo = m_textInfo.value("text");
1028         m_pixmapPos.setX(textInfo->pos.x() - 2 * padding
1029                          - (scaledIconSize + m_scaledPixmapSize.width()) / 2);
1030         m_pixmapPos.setY(padding
1031                          + (scaledIconSize - m_scaledPixmapSize.height()) / 2);
1032     }
1033
1034     m_iconRect = QRectF(m_pixmapPos, QSizeF(m_scaledPixmapSize));
1035
1036     // Prepare the pixmap that is used when the item gets hovered
1037     if (isHovered()) {
1038         m_hoverPixmap = m_pixmap;
1039         KIconEffect* effect = KIconLoader::global()->iconEffect();
1040         // In the KIconLoader terminology, active = hover.
1041         if (effect->hasEffect(KIconLoader::Desktop, KIconLoader::ActiveState)) {
1042             m_hoverPixmap = effect->apply(m_pixmap, KIconLoader::Desktop, KIconLoader::ActiveState);
1043         } else {
1044             m_hoverPixmap = m_pixmap;
1045         }
1046     } else if (hoverOpacity() <= 0.0) {
1047         // No hover animation is ongoing. Clear m_hoverPixmap to save memory.
1048         m_hoverPixmap = QPixmap();
1049     }
1050 }
1051
1052 void KStandardItemListWidget::updateTextsCache()
1053 {
1054     QTextOption textOption;
1055     switch (m_layout) {
1056     case IconsLayout:
1057         textOption.setWrapMode(QTextOption::WrapAtWordBoundaryOrAnywhere);
1058         textOption.setAlignment(Qt::AlignHCenter);
1059         break;
1060     case CompactLayout:
1061     case DetailsLayout:
1062         textOption.setAlignment(Qt::AlignLeft);
1063         textOption.setWrapMode(QTextOption::NoWrap);
1064         break;
1065     default:
1066         Q_ASSERT(false);
1067         break;
1068     }
1069
1070     qDeleteAll(m_textInfo);
1071     m_textInfo.clear();
1072     for (int i = 0; i < m_sortedVisibleRoles.count(); ++i) {
1073         TextInfo* textInfo = new TextInfo();
1074         textInfo->staticText.setTextFormat(Qt::PlainText);
1075         textInfo->staticText.setPerformanceHint(QStaticText::AggressiveCaching);
1076         textInfo->staticText.setTextOption(textOption);
1077         m_textInfo.insert(m_sortedVisibleRoles[i], textInfo);
1078     }
1079
1080     switch (m_layout) {
1081     case IconsLayout:   updateIconsLayoutTextCache(); break;
1082     case CompactLayout: updateCompactLayoutTextCache(); break;
1083     case DetailsLayout: updateDetailsLayoutTextCache(); break;
1084     default: Q_ASSERT(false); break;
1085     }
1086
1087     const TextInfo* ratingTextInfo = m_textInfo.value("rating");
1088     if (ratingTextInfo) {
1089         // The text of the rating-role has been set to empty to get
1090         // replaced by a rating-image showing the rating as stars.
1091         const KItemListStyleOption& option = styleOption();
1092         QSizeF ratingSize = preferredRatingSize(option);
1093
1094         const qreal availableWidth = (m_layout == DetailsLayout)
1095                                      ? columnWidth("rating") - columnPadding(option)
1096                                      : size().width();
1097         if (ratingSize.width() > availableWidth) {
1098             ratingSize.rwidth() = availableWidth;
1099         }
1100         m_rating = QPixmap(ratingSize.toSize());
1101         m_rating.fill(Qt::transparent);
1102
1103         QPainter painter(&m_rating);
1104         const QRect rect(0, 0, m_rating.width(), m_rating.height());
1105         const int rating = data().value("rating").toInt();
1106         KRatingPainter::paintRating(&painter, rect, Qt::AlignJustify | Qt::AlignVCenter, rating);
1107     } else if (!m_rating.isNull()) {
1108         m_rating = QPixmap();
1109     }
1110 }
1111
1112 void KStandardItemListWidget::updateIconsLayoutTextCache()
1113 {
1114     //      +------+
1115     //      | Icon |
1116     //      +------+
1117     //
1118     //    Name role that
1119     // might get wrapped above
1120     //    several lines.
1121     //  Additional role 1
1122     //  Additional role 2
1123
1124     const QHash<QByteArray, QVariant> values = data();
1125
1126     const KItemListStyleOption& option = styleOption();
1127     const qreal padding = option.padding;
1128     const qreal maxWidth = size().width() - 2 * padding;
1129     const qreal widgetHeight = size().height();
1130     const qreal lineSpacing = m_customizedFontMetrics.lineSpacing();
1131
1132     // Initialize properties for the "text" role. It will be used as anchor
1133     // for initializing the position of the other roles.
1134     TextInfo* nameTextInfo = m_textInfo.value("text");
1135     const QString nameText = KStringHandler::preProcessWrap(values["text"].toString());
1136     nameTextInfo->staticText.setText(nameText);
1137
1138     // Calculate the number of lines required for the name and the required width
1139     qreal nameWidth = 0;
1140     qreal nameHeight = 0;
1141     QTextLine line;
1142
1143     QTextLayout layout(nameTextInfo->staticText.text(), m_customizedFont);
1144     layout.setTextOption(nameTextInfo->staticText.textOption());
1145     layout.beginLayout();
1146     int nameLineIndex = 0;
1147     while ((line = layout.createLine()).isValid()) {
1148         line.setLineWidth(maxWidth);
1149         nameWidth = qMax(nameWidth, line.naturalTextWidth());
1150         nameHeight += line.height();
1151
1152         ++nameLineIndex;
1153         if (nameLineIndex == option.maxTextLines) {
1154             // The maximum number of textlines has been reached. If this is
1155             // the case provide an elided text if necessary.
1156             const int textLength = line.textStart() + line.textLength();
1157             if (textLength < nameText.length()) {
1158                 // Elide the last line of the text
1159                 qreal elidingWidth = maxWidth;
1160                 qreal lastLineWidth;
1161                 do {
1162                     QString lastTextLine = nameText.mid(line.textStart());
1163                     lastTextLine = m_customizedFontMetrics.elidedText(lastTextLine,
1164                                                                       Qt::ElideRight,
1165                                                                       elidingWidth);
1166                     const QString elidedText = nameText.left(line.textStart()) + lastTextLine;
1167                     nameTextInfo->staticText.setText(elidedText);
1168
1169                     lastLineWidth = m_customizedFontMetrics.boundingRect(lastTextLine).width();
1170
1171                     // We do the text eliding in a loop with decreasing width (1 px / iteration)
1172                     // to avoid problems related to different width calculation code paths
1173                     // within Qt. (see bug 337104)
1174                     elidingWidth -= 1.0;
1175                 } while (lastLineWidth > maxWidth);
1176
1177                 nameWidth = qMax(nameWidth, lastLineWidth);
1178             }
1179             break;
1180         }
1181     }
1182     layout.endLayout();
1183
1184     // Use one line for each additional information
1185     const int additionalRolesCount = qMax(visibleRoles().count() - 1, 0);
1186     nameTextInfo->staticText.setTextWidth(maxWidth);
1187     nameTextInfo->pos = QPointF(padding, widgetHeight -
1188                                          nameHeight -
1189                                          additionalRolesCount * lineSpacing -
1190                                          padding);
1191     m_textRect = QRectF(padding + (maxWidth - nameWidth) / 2,
1192                         nameTextInfo->pos.y(),
1193                         nameWidth,
1194                         nameHeight);
1195
1196     // Calculate the position for each additional information
1197     qreal y = nameTextInfo->pos.y() + nameHeight;
1198     foreach (const QByteArray& role, m_sortedVisibleRoles) {
1199         if (role == "text") {
1200             continue;
1201         }
1202
1203         const QString text = roleText(role, values);
1204         TextInfo* textInfo = m_textInfo.value(role);
1205         textInfo->staticText.setText(text);
1206
1207         qreal requiredWidth = 0;
1208
1209         QTextLayout layout(text, m_customizedFont);
1210         QTextOption textOption;
1211         textOption.setWrapMode(QTextOption::NoWrap);
1212         layout.setTextOption(textOption);
1213
1214         layout.beginLayout();
1215         QTextLine textLine = layout.createLine();
1216         if (textLine.isValid()) {
1217             textLine.setLineWidth(maxWidth);
1218             requiredWidth = textLine.naturalTextWidth();
1219             if (requiredWidth > maxWidth) {
1220                 const QString elidedText = m_customizedFontMetrics.elidedText(text, Qt::ElideRight, maxWidth);
1221                 textInfo->staticText.setText(elidedText);
1222                 requiredWidth = m_customizedFontMetrics.width(elidedText);
1223             } else if (role == "rating") {
1224                 // Use the width of the rating pixmap, because the rating text is empty.
1225                 requiredWidth = m_rating.width();
1226             }
1227         }
1228         layout.endLayout();
1229
1230         textInfo->pos = QPointF(padding, y);
1231         textInfo->staticText.setTextWidth(maxWidth);
1232
1233         const QRectF textRect(padding + (maxWidth - requiredWidth) / 2, y, requiredWidth, lineSpacing);
1234         m_textRect |= textRect;
1235
1236         y += lineSpacing;
1237     }
1238
1239     // Add a padding to the text rectangle
1240     m_textRect.adjust(-padding, -padding, padding, padding);
1241 }
1242
1243 void KStandardItemListWidget::updateCompactLayoutTextCache()
1244 {
1245     // +------+  Name role
1246     // | Icon |  Additional role 1
1247     // +------+  Additional role 2
1248
1249     const QHash<QByteArray, QVariant> values = data();
1250
1251     const KItemListStyleOption& option = styleOption();
1252     const qreal widgetHeight = size().height();
1253     const qreal lineSpacing = m_customizedFontMetrics.lineSpacing();
1254     const qreal textLinesHeight = qMax(visibleRoles().count(), 1) * lineSpacing;
1255     const int scaledIconSize = (textLinesHeight < option.iconSize) ? widgetHeight - 2 * option.padding : option.iconSize;
1256
1257     qreal maximumRequiredTextWidth = 0;
1258     const qreal x = option.padding * 3 + scaledIconSize;
1259     qreal y = qRound((widgetHeight - textLinesHeight) / 2);
1260     const qreal maxWidth = size().width() - x - option.padding;
1261     foreach (const QByteArray& role, m_sortedVisibleRoles) {
1262         const QString text = roleText(role, values);
1263         TextInfo* textInfo = m_textInfo.value(role);
1264         textInfo->staticText.setText(text);
1265
1266         qreal requiredWidth = m_customizedFontMetrics.width(text);
1267         if (requiredWidth > maxWidth) {
1268             requiredWidth = maxWidth;
1269             const QString elidedText = m_customizedFontMetrics.elidedText(text, Qt::ElideRight, maxWidth);
1270             textInfo->staticText.setText(elidedText);
1271         }
1272
1273         textInfo->pos = QPointF(x, y);
1274         textInfo->staticText.setTextWidth(maxWidth);
1275
1276         maximumRequiredTextWidth = qMax(maximumRequiredTextWidth, requiredWidth);
1277
1278         y += lineSpacing;
1279     }
1280
1281     m_textRect = QRectF(x - 2 * option.padding, 0, maximumRequiredTextWidth + 3 * option.padding, widgetHeight);
1282 }
1283
1284 void KStandardItemListWidget::updateDetailsLayoutTextCache()
1285 {
1286     // Precondition: Requires already updated m_expansionArea
1287     // to determine the left position.
1288
1289     // +------+
1290     // | Icon |  Name role   Additional role 1   Additional role 2
1291     // +------+
1292     m_textRect = QRectF();
1293
1294     const KItemListStyleOption& option = styleOption();
1295     const QHash<QByteArray, QVariant> values = data();
1296
1297     const qreal widgetHeight = size().height();
1298     const int scaledIconSize = widgetHeight - 2 * option.padding;
1299     const int fontHeight = m_customizedFontMetrics.height();
1300
1301     const qreal columnWidthInc = columnPadding(option);
1302     qreal firstColumnInc = scaledIconSize;
1303     if (m_supportsItemExpanding) {
1304         firstColumnInc += (m_expansionArea.left() + m_expansionArea.right() + widgetHeight) / 2;
1305     } else {
1306         firstColumnInc += option.padding;
1307     }
1308
1309     qreal x = firstColumnInc;
1310     const qreal y = qMax(qreal(option.padding), (widgetHeight - fontHeight) / 2);
1311
1312     foreach (const QByteArray& role, m_sortedVisibleRoles) {
1313         QString text = roleText(role, values);
1314
1315         // Elide the text in case it does not fit into the available column-width
1316         qreal requiredWidth = m_customizedFontMetrics.width(text);
1317         const qreal roleWidth = columnWidth(role);
1318         qreal availableTextWidth = roleWidth - columnWidthInc;
1319
1320         const bool isTextRole = (role == "text");
1321         if (isTextRole) {
1322             availableTextWidth -= firstColumnInc;
1323         }
1324
1325         if (requiredWidth > availableTextWidth) {
1326             text = m_customizedFontMetrics.elidedText(text, Qt::ElideRight, availableTextWidth);
1327             requiredWidth = m_customizedFontMetrics.width(text);
1328         }
1329
1330         TextInfo* textInfo = m_textInfo.value(role);
1331         textInfo->staticText.setText(text);
1332         textInfo->pos = QPointF(x + columnWidthInc / 2, y);
1333         x += roleWidth;
1334
1335         if (isTextRole) {
1336             const qreal textWidth = option.extendedSelectionRegion
1337                                     ? size().width() - textInfo->pos.x()
1338                                     : requiredWidth + 2 * option.padding;
1339             m_textRect = QRectF(textInfo->pos.x() - 2 * option.padding, 0,
1340                                 textWidth + option.padding, size().height());
1341
1342             // The column after the name should always be aligned on the same x-position independent
1343             // from the expansion-level shown in the name column
1344             x -= firstColumnInc;
1345         } else if (isRoleRightAligned(role)) {
1346             textInfo->pos.rx() += roleWidth - requiredWidth - columnWidthInc;
1347         }
1348     }
1349 }
1350
1351 void KStandardItemListWidget::updateAdditionalInfoTextColor()
1352 {
1353     QColor c1;
1354     if (m_customTextColor.isValid()) {
1355         c1 = m_customTextColor;
1356     } else if (isSelected() && m_layout != DetailsLayout) {
1357         c1 = styleOption().palette.highlightedText().color();
1358     } else {
1359         c1 = styleOption().palette.text().color();
1360     }
1361
1362     // For the color of the additional info the inactive text color
1363     // is not used as this might lead to unreadable text for some color schemes. Instead
1364     // the text color c1 is slightly mixed with the background color.
1365     const QColor c2 = styleOption().palette.base().color();
1366     const int p1 = 70;
1367     const int p2 = 100 - p1;
1368     m_additionalInfoTextColor = QColor((c1.red()   * p1 + c2.red()   * p2) / 100,
1369                                        (c1.green() * p1 + c2.green() * p2) / 100,
1370                                        (c1.blue()  * p1 + c2.blue()  * p2) / 100);
1371 }
1372
1373 void KStandardItemListWidget::drawPixmap(QPainter* painter, const QPixmap& pixmap)
1374 {
1375     if (m_scaledPixmapSize != pixmap.size() / pixmap.devicePixelRatio()) {
1376         QPixmap scaledPixmap = pixmap;
1377         KPixmapModifier::scale(scaledPixmap, m_scaledPixmapSize * qApp->devicePixelRatio());
1378         scaledPixmap.setDevicePixelRatio(qApp->devicePixelRatio());
1379         painter->drawPixmap(m_pixmapPos, scaledPixmap);
1380
1381 #ifdef KSTANDARDITEMLISTWIDGET_DEBUG
1382         painter->setPen(Qt::blue);
1383         painter->drawRect(QRectF(m_pixmapPos, QSizeF(m_scaledPixmapSize)));
1384 #endif
1385     } else {
1386         painter->drawPixmap(m_pixmapPos, pixmap);
1387     }
1388 }
1389
1390 void KStandardItemListWidget::drawSiblingsInformation(QPainter* painter)
1391 {
1392     const int siblingSize = size().height();
1393     const int x = (m_expansionArea.left() + m_expansionArea.right() - siblingSize) / 2;
1394     QRect siblingRect(x, 0, siblingSize, siblingSize);
1395
1396     QStyleOption option;
1397     option.palette.setColor(QPalette::Text, option.palette.color(normalTextColorRole()));
1398     bool isItemSibling = true;
1399
1400     const QBitArray siblings = siblingsInformation();
1401     for (int i = siblings.count() - 1; i >= 0; --i) {
1402         option.rect = siblingRect;
1403         option.state = siblings.at(i) ? QStyle::State_Sibling : QStyle::State_None;
1404
1405         if (isItemSibling) {
1406             option.state |= QStyle::State_Item;
1407             if (m_isExpandable) {
1408                 option.state |= QStyle::State_Children;
1409             }
1410             if (data().value("isExpanded").toBool()) {
1411                 option.state |= QStyle::State_Open;
1412             }
1413             isItemSibling = false;
1414         }
1415
1416         style()->drawPrimitive(QStyle::PE_IndicatorBranch, &option, painter);
1417
1418         siblingRect.translate(-siblingRect.width(), 0);
1419     }
1420 }
1421
1422 QRectF KStandardItemListWidget::roleEditingRect(const QByteArray& role) const
1423 {
1424     const TextInfo* textInfo = m_textInfo.value(role);
1425     if (!textInfo) {
1426         return QRectF();
1427     }
1428
1429     QRectF rect(textInfo->pos, textInfo->staticText.size());
1430     if (m_layout == DetailsLayout) {
1431         rect.setWidth(columnWidth(role) - rect.x());
1432     }
1433
1434     return rect;
1435 }
1436
1437 void KStandardItemListWidget::closeRoleEditor()
1438 {
1439     disconnect(m_roleEditor, &KItemListRoleEditor::roleEditingCanceled,
1440                this, &KStandardItemListWidget::slotRoleEditingCanceled);
1441     disconnect(m_roleEditor, &KItemListRoleEditor::roleEditingFinished,
1442                this, &KStandardItemListWidget::slotRoleEditingFinished);
1443
1444     if (m_roleEditor->hasFocus()) {
1445         // If the editing was not ended by a FocusOut event, we have
1446         // to transfer the keyboard focus back to the KItemListContainer.
1447         scene()->views()[0]->parentWidget()->setFocus();
1448     }
1449
1450     if (m_oldRoleEditor) {
1451         m_oldRoleEditor->deleteLater();
1452     }
1453     m_oldRoleEditor = m_roleEditor;
1454     m_roleEditor->hide();
1455     m_roleEditor = 0;
1456 }
1457
1458 QPixmap KStandardItemListWidget::pixmapForIcon(const QString& name, const QStringList& overlays, int size, QIcon::Mode mode)
1459 {
1460     static const QIcon fallbackIcon = QIcon::fromTheme(QStringLiteral("unknown"));
1461     size *= qApp->devicePixelRatio();
1462     const QString key = "KStandardItemListWidget:" % name % ":" % overlays.join(QStringLiteral(":")) % ":" % QString::number(size) % ":" % QString::number(mode);
1463     QPixmap pixmap;
1464
1465     if (!QPixmapCache::find(key, pixmap)) {
1466         const QIcon icon = QIcon::fromTheme(name, fallbackIcon);
1467
1468         int requestedSize;
1469         if (size <= KIconLoader::SizeSmall) {
1470             requestedSize = KIconLoader::SizeSmall;
1471         } else if (size <= KIconLoader::SizeSmallMedium) {
1472             requestedSize = KIconLoader::SizeSmallMedium;
1473         } else if (size <= KIconLoader::SizeMedium) {
1474             requestedSize = KIconLoader::SizeMedium;
1475         } else if (size <= KIconLoader::SizeLarge) {
1476             requestedSize = KIconLoader::SizeLarge;
1477         } else if (size <= KIconLoader::SizeHuge) {
1478             requestedSize = KIconLoader::SizeHuge;
1479         } else if (size <= KIconLoader::SizeEnormous) {
1480             requestedSize = KIconLoader::SizeEnormous;
1481         } else if (size <= KIconLoader::SizeEnormous * 2) {
1482             requestedSize = KIconLoader::SizeEnormous * 2;
1483         } else {
1484             requestedSize = size;
1485         }
1486
1487         pixmap = icon.pixmap(requestedSize / qApp->devicePixelRatio(), requestedSize / qApp->devicePixelRatio(), mode);
1488         if (requestedSize != size) {
1489             KPixmapModifier::scale(pixmap, QSize(size, size));
1490         }
1491
1492         // Strangely KFileItem::overlays() returns empty string-values, so
1493         // we need to check first whether an overlay must be drawn at all.
1494         // It is more efficient to do it here, as KIconLoader::drawOverlays()
1495         // assumes that an overlay will be drawn and has some additional
1496         // setup time.
1497         foreach (const QString& overlay, overlays) {
1498             if (!overlay.isEmpty()) {
1499                 // There is at least one overlay, draw all overlays above m_pixmap
1500                 // and cancel the check
1501                 KIconLoader::global()->drawOverlays(overlays, pixmap, KIconLoader::Desktop);
1502                 break;
1503             }
1504         }
1505
1506         QPixmapCache::insert(key, pixmap);
1507     }
1508     pixmap.setDevicePixelRatio(qApp->devicePixelRatio());
1509
1510     return pixmap;
1511 }
1512
1513 QSizeF KStandardItemListWidget::preferredRatingSize(const KItemListStyleOption& option)
1514 {
1515     const qreal height = option.fontMetrics.ascent();
1516     return QSizeF(height * 5, height);
1517 }
1518
1519 qreal KStandardItemListWidget::columnPadding(const KItemListStyleOption& option)
1520 {
1521     return option.padding * 6;
1522 }
1523