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 <QDebug>
  44 #include <QGuiApplication>
  45
  46 // #define KSTANDARDITEMLISTWIDGET_DEBUG
  47
  48 KStandardItemListWidgetInformant::KStandardItemListWidgetInformant() :
  49     KItemListWidgetInformant()
  50 {
  51 }
  52
  53 KStandardItemListWidgetInformant::~KStandardItemListWidgetInformant()
  54 {
  55 }
  56
  57 void KStandardItemListWidgetInformant::calculateItemSizeHints(QVector<qreal>& logicalHeightHints, qreal& logicalWidthHint, const KItemListView* view) const
  58 {
  59     switch (static_cast<const KStandardItemListView*>(view)->itemLayout()) {
  60     case KStandardItemListWidget::IconsLayout:
  61         calculateIconsLayoutItemSizeHints(logicalHeightHints, logicalWidthHint, view);
  62         break;
  63
  64     case KStandardItemListWidget::CompactLayout:
  65         calculateCompactLayoutItemSizeHints(logicalHeightHints, logicalWidthHint, view);
  66         break;
  67
  68     case KStandardItemListWidget::DetailsLayout:
  69         calculateDetailsLayoutItemSizeHints(logicalHeightHints, logicalWidthHint, view);
  70         break;
  71
  72     default:
  73         Q_ASSERT(false);
  74         break;
  75     }
  76 }
  77
  78 qreal KStandardItemListWidgetInformant::preferredRoleColumnWidth(const QByteArray& role,
  79                                                                  int index,
  80                                                                  const KItemListView* view) const
  81 {
  82     const QHash<QByteArray, QVariant> values = view->model()->data(index);
  83     const KItemListStyleOption& option = view->styleOption();
  84
  85     const QString text = roleText(role, values);
  86     qreal width = KStandardItemListWidget::columnPadding(option);
  87
  88     const QFontMetrics& normalFontMetrics = option.fontMetrics;
  89     const QFontMetrics linkFontMetrics(customizedFontForLinks(option.font));
  90
  91     if (role == "rating") {
  92         width += KStandardItemListWidget::preferredRatingSize(option).width();
  93     } else {
  94         // If current item is a link, we use the customized link font metrics instead of the normal font metrics.
  95         const QFontMetrics& fontMetrics = itemIsLink(index, view) ? linkFontMetrics : normalFontMetrics;
  96
  97         width += fontMetrics.width(text);
  98
  99         if (role == "text") {
 100             if (view->supportsItemExpanding()) {
 101                 // Increase the width by the expansion-toggle and the current expansion level
 102                 const int expandedParentsCount = values.value("expandedParentsCount", 0).toInt();
 103                 const qreal height = option.padding * 2 + qMax(option.iconSize, fontMetrics.height());
 104                 width += (expandedParentsCount + 1) * height;
 105             }
 106
 107             // Increase the width by the required space for the icon
 108             width += option.padding * 2 + option.iconSize;
 109         }
 110     }
 111
 112     return width;
 113 }
 114
 115 QString KStandardItemListWidgetInformant::itemText(int index, const KItemListView* view) const
 116 {
 117     return view->model()->data(index).value("text").toString();
 118 }
 119
 120 bool KStandardItemListWidgetInformant::itemIsLink(int index, const KItemListView* view) const
 121 {
 122     Q_UNUSED(index);
 123     Q_UNUSED(view);
 124     return false;
 125 }
 126
 127 QString KStandardItemListWidgetInformant::roleText(const QByteArray& role,
 128                                                    const QHash<QByteArray, QVariant>& values) const
 129 {
 130     if (role == "rating") {
 131         // Always use an empty text, as the rating is shown by the image m_rating.
 132         return QString();
 133     }
 134     return values.value(role).toString();
 135 }
 136
 137 QFont KStandardItemListWidgetInformant::customizedFontForLinks(const QFont& baseFont) const
 138 {
 139     return baseFont;
 140 }
 141
 142 void KStandardItemListWidgetInformant::calculateIconsLayoutItemSizeHints(QVector<qreal>& logicalHeightHints, qreal& logicalWidthHint, const KItemListView* view) const
 143 {
 144     const KItemListStyleOption& option = view->styleOption();
 145     const QFont& normalFont = option.font;
 146     const int additionalRolesCount = qMax(view->visibleRoles().count() - 1, 0);
 147
 148     const qreal itemWidth = view->itemSize().width();
 149     const qreal maxWidth = itemWidth - 2 * option.padding;
 150     const qreal additionalRolesSpacing = additionalRolesCount * option.fontMetrics.lineSpacing();
 151     const qreal spacingAndIconHeight = option.iconSize + option.padding * 3;
 152
 153     const QFont linkFont = customizedFontForLinks(normalFont);
 154
 155     QTextOption textOption(Qt::AlignHCenter);
 156     textOption.setWrapMode(QTextOption::WrapAtWordBoundaryOrAnywhere);
 157
 158     for (int index = 0; index < logicalHeightHints.count(); ++index) {
 159         if (logicalHeightHints.at(index) > 0.0) {
 160             continue;
 161         }
 162
 163         // If the current item is a link, we use the customized link font instead of the normal font.
 164         const QFont& font = itemIsLink(index, view) ? linkFont : normalFont;
 165
 166         const QString& text = KStringHandler::preProcessWrap(itemText(index, view));
 167
 168         // Calculate the number of lines required for wrapping the name
 169         qreal textHeight = 0;
 170         QTextLayout layout(text, font);
 171         layout.setTextOption(textOption);
 172         layout.beginLayout();
 173         QTextLine line;
 174         int lineCount = 0;
 175         while ((line = layout.createLine()).isValid()) {
 176             line.setLineWidth(maxWidth);
 177             line.naturalTextWidth();
 178             textHeight += line.height();
 179
 180             ++lineCount;
 181             if (lineCount == option.maxTextLines) {
 182                 break;
 183             }
 184         }
 185         layout.endLayout();
 186
 187         // Add one line for each additional information
 188         textHeight += additionalRolesSpacing;
 189
 190         logicalHeightHints[index] = textHeight + spacingAndIconHeight;
 191     }
 192
 193     logicalWidthHint = itemWidth;
 194 }
 195
 196 void KStandardItemListWidgetInformant::calculateCompactLayoutItemSizeHints(QVector<qreal>& logicalHeightHints, qreal& logicalWidthHint, const KItemListView* view) const
 197 {
 198     const KItemListStyleOption& option = view->styleOption();
 199     const QFontMetrics& normalFontMetrics = option.fontMetrics;
 200     const int additionalRolesCount = qMax(view->visibleRoles().count() - 1, 0);
 201
 202     const QList<QByteArray>& visibleRoles = view->visibleRoles();
 203     const bool showOnlyTextRole = (visibleRoles.count() == 1) && (visibleRoles.first() == "text");
 204     const qreal maxWidth = option.maxTextWidth;
 205     const qreal paddingAndIconWidth = option.padding * 4 + option.iconSize;
 206     const qreal height = option.padding * 2 + qMax(option.iconSize, (1 + additionalRolesCount) * normalFontMetrics.lineSpacing());
 207
 208     const QFontMetrics linkFontMetrics(customizedFontForLinks(option.font));
 209
 210     for (int index = 0; index < logicalHeightHints.count(); ++index) {
 211         if (logicalHeightHints.at(index) > 0.0) {
 212             continue;
 213         }
 214
 215         // If the current item is a link, we use the customized link font metrics instead of the normal font metrics.
 216         const QFontMetrics& fontMetrics = itemIsLink(index, view) ? linkFontMetrics : normalFontMetrics;
 217
 218         // For each row exactly one role is shown. Calculate the maximum required width that is necessary
 219         // to show all roles without horizontal clipping.
 220         qreal maximumRequiredWidth = 0.0;
 221
 222         if (showOnlyTextRole) {
 223             maximumRequiredWidth = fontMetrics.width(itemText(index, view));
 224         } else {
 225             const QHash<QByteArray, QVariant>& values = view->model()->data(index);
 226             foreach (const QByteArray& role, visibleRoles) {
 227                 const QString& text = roleText(role, values);
 228                 const qreal requiredWidth = fontMetrics.width(text);
 229                 maximumRequiredWidth = qMax(maximumRequiredWidth, requiredWidth);
 230             }
 231         }
 232
 233         qreal width = paddingAndIconWidth + maximumRequiredWidth;
 234         if (maxWidth > 0 && width > maxWidth) {
 235             width = maxWidth;
 236         }
 237
 238         logicalHeightHints[index] = width;
 239     }
 240
 241     logicalWidthHint = height;
 242 }
 243
 244 void KStandardItemListWidgetInformant::calculateDetailsLayoutItemSizeHints(QVector<qreal>& logicalHeightHints, qreal& logicalWidthHint, const KItemListView* view) const
 245 {
 246     const KItemListStyleOption& option = view->styleOption();
 247     const qreal height = option.padding * 2 + qMax(option.iconSize, option.fontMetrics.height());
 248     logicalHeightHints.fill(height);
 249     logicalWidthHint = -1.0;
 250 }
 251
 252 KStandardItemListWidget::KStandardItemListWidget(KItemListWidgetInformant* informant, QGraphicsItem* parent) :
 253     KItemListWidget(informant, parent),
 254     m_isCut(false),
 255     m_isHidden(false),
 256     m_customizedFont(),
 257     m_customizedFontMetrics(m_customizedFont),
 258     m_isExpandable(false),
 259     m_supportsItemExpanding(false),
 260     m_dirtyLayout(true),
 261     m_dirtyContent(true),
 262     m_dirtyContentRoles(),
 263     m_layout(IconsLayout),
 264     m_pixmapPos(),
 265     m_pixmap(),
 266     m_scaledPixmapSize(),
 267     m_iconRect(),
 268     m_hoverPixmap(),
 269     m_textInfo(),
 270     m_textRect(),
 271     m_sortedVisibleRoles(),
 272     m_expansionArea(),
 273     m_customTextColor(),
 274     m_additionalInfoTextColor(),
 275     m_overlay(),
 276     m_rating(),
 277     m_roleEditor(0),
 278     m_oldRoleEditor(0)
 279 {
 280 }
 281
 282 KStandardItemListWidget::~KStandardItemListWidget()
 283 {
 284     qDeleteAll(m_textInfo);
 285     m_textInfo.clear();
 286
 287     if (m_roleEditor) {
 288         m_roleEditor->deleteLater();
 289     }
 290
 291     if (m_oldRoleEditor) {
 292         m_oldRoleEditor->deleteLater();
 293     }
 294 }
 295
 296 void KStandardItemListWidget::setLayout(Layout layout)
 297 {
 298     if (m_layout != layout) {
 299         m_layout = layout;
 300         m_dirtyLayout = true;
 301         updateAdditionalInfoTextColor();
 302         update();
 303     }
 304 }
 305
 306 KStandardItemListWidget::Layout KStandardItemListWidget::layout() const
 307 {
 308     return m_layout;
 309 }
 310
 311 void KStandardItemListWidget::setSupportsItemExpanding(bool supportsItemExpanding)
 312 {
 313     if (m_supportsItemExpanding != supportsItemExpanding) {
 314         m_supportsItemExpanding = supportsItemExpanding;
 315         m_dirtyLayout = true;
 316         update();
 317     }
 318 }
 319
 320 bool KStandardItemListWidget::supportsItemExpanding() const
 321 {
 322     return m_supportsItemExpanding;
 323 }
 324
 325 void KStandardItemListWidget::paint(QPainter* painter, const QStyleOptionGraphicsItem* option, QWidget* widget)
 326 {
 327     const_cast<KStandardItemListWidget*>(this)->triggerCacheRefreshing();
 328
 329     KItemListWidget::paint(painter, option, widget);
 330
 331     if (!m_expansionArea.isEmpty()) {
 332         drawSiblingsInformation(painter);
 333     }
 334
 335     const KItemListStyleOption& itemListStyleOption = styleOption();
 336     if (isHovered()) {
 337         if (hoverOpacity() < 1.0) {
 338             /*
 339              * Linear interpolation between m_pixmap and m_hoverPixmap.
 340              *
 341              * Note that this cannot be achieved by painting m_hoverPixmap over
 342              * m_pixmap, even if the opacities are adjusted. For details see
 343              * https://git.reviewboard.kde.org/r/109614/
 344              */
 345             // Paint pixmap1 so that pixmap1 = m_pixmap * (1.0 - hoverOpacity())
 346             QPixmap pixmap1(m_pixmap.size());
 347             pixmap1.setDevicePixelRatio(m_pixmap.devicePixelRatio());
 348             pixmap1.fill(Qt::transparent);
 349             {
 350                 QPainter p(&pixmap1);
 351                 p.setOpacity(1.0 - hoverOpacity());
 352                 p.drawPixmap(0, 0, m_pixmap);
 353             }
 354
 355             // Paint pixmap2 so that pixmap2 = m_hoverPixmap * hoverOpacity()
 356             QPixmap pixmap2(pixmap1.size());
 357             pixmap2.setDevicePixelRatio(pixmap1.devicePixelRatio());
 358             pixmap2.fill(Qt::transparent);
 359             {
 360                 QPainter p(&pixmap2);
 361                 p.setOpacity(hoverOpacity());
 362                 p.drawPixmap(0, 0, m_hoverPixmap);
 363             }
 364
 365             // Paint pixmap2 on pixmap1 using CompositionMode_Plus
 366             // Now pixmap1 = pixmap2 + m_pixmap * (1.0 - hoverOpacity())
 367             //             = m_hoverPixmap * hoverOpacity() + m_pixmap * (1.0 - hoverOpacity())
 368             {
 369                 QPainter p(&pixmap1);
 370                 p.setCompositionMode(QPainter::CompositionMode_Plus);
 371                 p.drawPixmap(0, 0, pixmap2);
 372             }
 373
 374             // Finally paint pixmap1 on the widget
 375             drawPixmap(painter, pixmap1);
 376         } else {
 377             drawPixmap(painter, m_hoverPixmap);
 378         }
 379     } else {
 380         drawPixmap(painter, m_pixmap);
 381     }
 382
 383     painter->setFont(m_customizedFont);
 384     painter->setPen(textColor());
 385     const TextInfo* textInfo = m_textInfo.value("text");
 386
 387     if (!textInfo) {
 388         // It seems that we can end up here even if m_textInfo does not contain
 389         // the key "text", see bug 306167. According to triggerCacheRefreshing(),
 390         // this can only happen if the index is negative. This can happen when
 391         // the item is about to be removed, see KItemListView::slotItemsRemoved().
 392         // TODO: try to reproduce the crash and find a better fix.
 393         return;
 394     }
 395
 396     painter->drawStaticText(textInfo->pos, textInfo->staticText);
 397
 398     bool clipAdditionalInfoBounds = false;
 399     if (m_supportsItemExpanding) {
 400         // Prevent a possible overlapping of the additional-information texts
 401         // with the icon. This can happen if the user has minimized the width
 402         // of the name-column to a very small value.
 403         const qreal minX = m_pixmapPos.x() + m_pixmap.width() + 4 * itemListStyleOption.padding;
 404         if (textInfo->pos.x() + columnWidth("text") > minX) {
 405             clipAdditionalInfoBounds = true;
 406             painter->save();
 407             painter->setClipRect(minX, 0, size().width() - minX, size().height(), Qt::IntersectClip);
 408         }
 409     }
 410
 411     painter->setPen(m_additionalInfoTextColor);
 412     painter->setFont(m_customizedFont);
 413
 414     for (int i = 1; i < m_sortedVisibleRoles.count(); ++i) {
 415         const TextInfo* textInfo = m_textInfo.value(m_sortedVisibleRoles[i]);
 416         painter->drawStaticText(textInfo->pos, textInfo->staticText);
 417     }
 418
 419     if (!m_rating.isNull()) {
 420         const TextInfo* ratingTextInfo = m_textInfo.value("rating");
 421         QPointF pos = ratingTextInfo->pos;
 422         const Qt::Alignment align = ratingTextInfo->staticText.textOption().alignment();
 423         if (align & Qt::AlignHCenter) {
 424             pos.rx() += (size().width() - m_rating.width()) / 2 - 2;
 425         }
 426         painter->drawPixmap(pos, m_rating);
 427     }
 428
 429     if (clipAdditionalInfoBounds) {
 430         painter->restore();
 431     }
 432
 433 #ifdef KSTANDARDITEMLISTWIDGET_DEBUG
 434     painter->setBrush(Qt::NoBrush);
 435     painter->setPen(Qt::green);
 436     painter->drawRect(m_iconRect);
 437
 438     painter->setPen(Qt::blue);
 439     painter->drawRect(m_textRect);
 440
 441     painter->setPen(Qt::red);
 442     painter->drawText(QPointF(0, m_customizedFontMetrics.height()), QString::number(index()));
 443     painter->drawRect(rect());
 444 #endif
 445 }
 446
 447 QRectF KStandardItemListWidget::iconRect() const
 448 {
 449     const_cast<KStandardItemListWidget*>(this)->triggerCacheRefreshing();
 450     return m_iconRect;
 451 }
 452
 453 QRectF KStandardItemListWidget::textRect() const
 454 {
 455     const_cast<KStandardItemListWidget*>(this)->triggerCacheRefreshing();
 456     return m_textRect;
 457 }
 458
 459 QRectF KStandardItemListWidget::textFocusRect() const
 460 {
 461     // In the compact- and details-layout a larger textRect() is returned to be aligned
 462     // with the iconRect(). This is useful to have a larger selection/hover-area
 463     // when having a quite large icon size but only one line of text. Still the
 464     // focus rectangle should be shown as narrow as possible around the text.
 465
 466     const_cast<KStandardItemListWidget*>(this)->triggerCacheRefreshing();
 467
 468     switch (m_layout) {
 469     case CompactLayout: {
 470         QRectF rect = m_textRect;
 471         const TextInfo* topText    = m_textInfo.value(m_sortedVisibleRoles.first());
 472         const TextInfo* bottomText = m_textInfo.value(m_sortedVisibleRoles.last());
 473         rect.setTop(topText->pos.y());
 474         rect.setBottom(bottomText->pos.y() + bottomText->staticText.size().height());
 475         return rect;
 476     }
 477
 478     case DetailsLayout: {
 479         QRectF rect = m_textRect;
 480         const TextInfo* textInfo = m_textInfo.value(m_sortedVisibleRoles.first());
 481         rect.setTop(textInfo->pos.y());
 482         rect.setBottom(textInfo->pos.y() + textInfo->staticText.size().height());
 483
 484         const KItemListStyleOption& option = styleOption();
 485         if (option.extendedSelectionRegion) {
 486             const QString text = textInfo->staticText.text();
 487             rect.setWidth(m_customizedFontMetrics.width(text) + 2 * option.padding);
 488         }
 489
 490         return rect;
 491     }
 492
 493     default:
 494         break;
 495     }
 496
 497     return m_textRect;
 498 }
 499
 500 QRectF KStandardItemListWidget::selectionRect() const
 501 {
 502     const_cast<KStandardItemListWidget*>(this)->triggerCacheRefreshing();
 503
 504     switch (m_layout) {
 505     case IconsLayout:
 506         return m_textRect;
 507
 508     case CompactLayout:
 509     case DetailsLayout: {
 510         const int padding = styleOption().padding;
 511         QRectF adjustedIconRect = iconRect().adjusted(-padding, -padding, padding, padding);
 512         return adjustedIconRect | m_textRect;
 513     }
 514
 515     default:
 516         Q_ASSERT(false);
 517         break;
 518     }
 519
 520     return m_textRect;
 521 }
 522
 523 QRectF KStandardItemListWidget::expansionToggleRect() const
 524 {
 525     const_cast<KStandardItemListWidget*>(this)->triggerCacheRefreshing();
 526     return m_isExpandable ? m_expansionArea : QRectF();
 527 }
 528
 529 QRectF KStandardItemListWidget::selectionToggleRect() const
 530 {
 531     const_cast<KStandardItemListWidget*>(this)->triggerCacheRefreshing();
 532
 533     const int iconHeight = styleOption().iconSize;
 534
 535     int toggleSize = KIconLoader::SizeSmall;
 536     if (iconHeight >= KIconLoader::SizeEnormous) {
 537         toggleSize = KIconLoader::SizeMedium;
 538     } else if (iconHeight >= KIconLoader::SizeLarge) {
 539         toggleSize = KIconLoader::SizeSmallMedium;
 540     }
 541
 542     QPointF pos = iconRect().topLeft();
 543
 544     // If the selection toggle has a very small distance to the
 545     // widget borders, the size of the selection toggle will get
 546     // increased to prevent an accidental clicking of the item
 547     // when trying to hit the toggle.
 548     const int widgetHeight = size().height();
 549     const int widgetWidth = size().width();
 550     const int minMargin = 2;
 551
 552     if (toggleSize + minMargin * 2 >= widgetHeight) {
 553         pos.rx() -= (widgetHeight - toggleSize) / 2;
 554         toggleSize = widgetHeight;
 555         pos.setY(0);
 556     }
 557     if (toggleSize + minMargin * 2 >= widgetWidth) {
 558         pos.ry() -= (widgetWidth - toggleSize) / 2;
 559         toggleSize = widgetWidth;
 560         pos.setX(0);
 561     }
 562
 563     return QRectF(pos, QSizeF(toggleSize, toggleSize));
 564 }
 565
 566 QPixmap KStandardItemListWidget::createDragPixmap(const QStyleOptionGraphicsItem* option,
 567                                                   QWidget* widget)
 568 {
 569     QPixmap pixmap = KItemListWidget::createDragPixmap(option, widget);
 570     if (m_layout != DetailsLayout) {
 571         return pixmap;
 572     }
 573
 574     // Only return the content of the text-column as pixmap
 575     const int leftClip = m_pixmapPos.x();
 576
 577     const TextInfo* textInfo = m_textInfo.value("text");
 578     const int rightClip = textInfo->pos.x() +
 579                           textInfo->staticText.size().width() +
 580                           2 * styleOption().padding;
 581
 582     QPixmap clippedPixmap(rightClip - leftClip + 1, pixmap.height());
 583     clippedPixmap.fill(Qt::transparent);
 584
 585     QPainter painter(&clippedPixmap);
 586     painter.drawPixmap(-leftClip, 0, pixmap);
 587
 588     return clippedPixmap;
 589 }
 590
 591
 592 KItemListWidgetInformant* KStandardItemListWidget::createInformant()
 593 {
 594     return new KStandardItemListWidgetInformant();
 595 }
 596
 597 void KStandardItemListWidget::invalidateCache()
 598 {
 599     m_dirtyLayout = true;
 600     m_dirtyContent = true;
 601 }
 602
 603 void KStandardItemListWidget::refreshCache()
 604 {
 605 }
 606
 607 bool KStandardItemListWidget::isRoleRightAligned(const QByteArray& role) const
 608 {
 609     Q_UNUSED(role);
 610     return false;
 611 }
 612
 613 bool KStandardItemListWidget::isHidden() const
 614 {
 615     return false;
 616 }
 617
 618 QFont KStandardItemListWidget::customizedFont(const QFont& baseFont) const
 619 {
 620     return baseFont;
 621 }
 622
 623 QPalette::ColorRole KStandardItemListWidget::normalTextColorRole() const
 624 {
 625     return QPalette::Text;
 626 }
 627
 628 void KStandardItemListWidget::setTextColor(const QColor& color)
 629 {
 630     if (color != m_customTextColor) {
 631         m_customTextColor = color;
 632         updateAdditionalInfoTextColor();
 633         update();
 634     }
 635 }
 636
 637 QColor KStandardItemListWidget::textColor() const
 638 {
 639     if (!isSelected()) {
 640         if (m_isHidden) {
 641             return m_additionalInfoTextColor;
 642         } else if (m_customTextColor.isValid()) {
 643             return m_customTextColor;
 644         }
 645     }
 646
 647     const QPalette::ColorGroup group = isActiveWindow() ? QPalette::Active : QPalette::Inactive;
 648     const QPalette::ColorRole role = isSelected() ? QPalette::HighlightedText : normalTextColorRole();
 649     return styleOption().palette.color(group, role);
 650 }
 651
 652 void KStandardItemListWidget::setOverlay(const QPixmap& overlay)
 653 {
 654     m_overlay = overlay;
 655     m_dirtyContent = true;
 656     update();
 657 }
 658
 659 QPixmap KStandardItemListWidget::overlay() const
 660 {
 661     return m_overlay;
 662 }
 663
 664
 665 QString KStandardItemListWidget::roleText(const QByteArray& role,
 666                                           const QHash<QByteArray, QVariant>& values) const
 667 {
 668     return static_cast<const KStandardItemListWidgetInformant*>(informant())->roleText(role, values);
 669 }
 670
 671 void KStandardItemListWidget::dataChanged(const QHash<QByteArray, QVariant>& current,
 672                                           const QSet<QByteArray>& roles)
 673 {
 674     Q_UNUSED(current);
 675
 676     m_dirtyContent = true;
 677
 678     QSet<QByteArray> dirtyRoles;
 679     if (roles.isEmpty()) {
 680         dirtyRoles = visibleRoles().toSet();
 681     } else {
 682         dirtyRoles = roles;
 683     }
 684
 685     // The URL might have changed (i.e., if the sort order of the items has
 686     // been changed). Therefore, the "is cut" state must be updated.
 687     KFileItemClipboard* clipboard = KFileItemClipboard::instance();
 688     const QUrl itemUrl = data().value("url").value<QUrl>();
 689     m_isCut = clipboard->isCut(itemUrl);
 690
 691     // The icon-state might depend from other roles and hence is
 692     // marked as dirty whenever a role has been changed
 693     dirtyRoles.insert("iconPixmap");
 694     dirtyRoles.insert("iconName");
 695
 696     QSetIterator<QByteArray> it(dirtyRoles);
 697     while (it.hasNext()) {
 698         const QByteArray& role = it.next();
 699         m_dirtyContentRoles.insert(role);
 700     }
 701 }
 702
 703 void KStandardItemListWidget::visibleRolesChanged(const QList<QByteArray>& current,
 704                                               const QList<QByteArray>& previous)
 705 {
 706     Q_UNUSED(previous);
 707     m_sortedVisibleRoles = current;
 708     m_dirtyLayout = true;
 709 }
 710
 711 void KStandardItemListWidget::columnWidthChanged(const QByteArray& role,
 712                                              qreal current,
 713                                              qreal previous)
 714 {
 715     Q_UNUSED(role);
 716     Q_UNUSED(current);
 717     Q_UNUSED(previous);
 718     m_dirtyLayout = true;
 719 }
 720
 721 void KStandardItemListWidget::styleOptionChanged(const KItemListStyleOption& current,
 722                                              const KItemListStyleOption& previous)
 723 {
 724     Q_UNUSED(current);
 725     Q_UNUSED(previous);
 726     updateAdditionalInfoTextColor();
 727     m_dirtyLayout = true;
 728 }
 729
 730 void KStandardItemListWidget::hoveredChanged(bool hovered)
 731 {
 732     Q_UNUSED(hovered);
 733     m_dirtyLayout = true;
 734 }
 735
 736 void KStandardItemListWidget::selectedChanged(bool selected)
 737 {
 738     Q_UNUSED(selected);
 739     updateAdditionalInfoTextColor();
 740     m_dirtyContent = true;
 741 }
 742
 743 void KStandardItemListWidget::siblingsInformationChanged(const QBitArray& current, const QBitArray& previous)
 744 {
 745     Q_UNUSED(current);
 746     Q_UNUSED(previous);
 747     m_dirtyLayout = true;
 748 }
 749
 750 int KStandardItemListWidget::selectionLength(const QString& text) const
 751 {
 752     return text.length();
 753 }
 754
 755 void KStandardItemListWidget::editedRoleChanged(const QByteArray& current, const QByteArray& previous)
 756 {
 757     Q_UNUSED(previous);
 758
 759     QGraphicsView* parent = scene()->views()[0];
 760     if (current.isEmpty() || !parent || current != "text") {
 761         if (m_roleEditor) {
 762             emit roleEditingCanceled(index(), current, data().value(current));
 763
 764             disconnect(m_roleEditor, &KItemListRoleEditor::roleEditingCanceled,
 765                        this, &KStandardItemListWidget::slotRoleEditingCanceled);
 766             disconnect(m_roleEditor, &KItemListRoleEditor::roleEditingFinished,
 767                        this, &KStandardItemListWidget::slotRoleEditingFinished);
 768
 769             if (m_oldRoleEditor) {
 770                 m_oldRoleEditor->deleteLater();
 771             }
 772             m_oldRoleEditor = m_roleEditor;
 773             m_roleEditor->hide();
 774             m_roleEditor = 0;
 775         }
 776         return;
 777     }
 778
 779     Q_ASSERT(!m_roleEditor);
 780
 781     const TextInfo* textInfo = m_textInfo.value("text");
 782
 783     m_roleEditor = new KItemListRoleEditor(parent);
 784     m_roleEditor->setRole(current);
 785     m_roleEditor->setFont(styleOption().font);
 786
 787     const QString text = data().value(current).toString();
 788     m_roleEditor->setPlainText(text);
 789
 790     QTextOption textOption = textInfo->staticText.textOption();
 791     m_roleEditor->document()->setDefaultTextOption(textOption);
 792
 793     const int textSelectionLength = selectionLength(text);
 794
 795     if (textSelectionLength > 0) {
 796         QTextCursor cursor = m_roleEditor->textCursor();
 797         cursor.movePosition(QTextCursor::StartOfBlock);
 798         cursor.movePosition(QTextCursor::NextCharacter, QTextCursor::KeepAnchor, textSelectionLength);
 799         m_roleEditor->setTextCursor(cursor);
 800     }
 801
 802     connect(m_roleEditor, &KItemListRoleEditor::roleEditingCanceled,
 803             this, &KStandardItemListWidget::slotRoleEditingCanceled);
 804     connect(m_roleEditor, &KItemListRoleEditor::roleEditingFinished,
 805             this, &KStandardItemListWidget::slotRoleEditingFinished);
 806
 807     // Adjust the geometry of the editor
 808     QRectF rect = roleEditingRect(current);
 809     const int frameWidth = m_roleEditor->frameWidth();
 810     rect.adjust(-frameWidth, -frameWidth, frameWidth, frameWidth);
 811     rect.translate(pos());
 812     if (rect.right() > parent->width()) {
 813         rect.setWidth(parent->width() - rect.left());
 814     }
 815     m_roleEditor->setGeometry(rect.toRect());
 816     m_roleEditor->show();
 817     m_roleEditor->setFocus();
 818 }
 819
 820 void KStandardItemListWidget::resizeEvent(QGraphicsSceneResizeEvent* event)
 821 {
 822     if (m_roleEditor) {
 823         setEditedRole(QByteArray());
 824         Q_ASSERT(!m_roleEditor);
 825     }
 826
 827     KItemListWidget::resizeEvent(event);
 828
 829     m_dirtyLayout = true;
 830 }
 831
 832 void KStandardItemListWidget::showEvent(QShowEvent* event)
 833 {
 834     KItemListWidget::showEvent(event);
 835
 836     // Listen to changes of the clipboard to mark the item as cut/uncut
 837     KFileItemClipboard* clipboard = KFileItemClipboard::instance();
 838
 839     const QUrl itemUrl = data().value("url").value<QUrl>();
 840     m_isCut = clipboard->isCut(itemUrl);
 841
 842     connect(clipboard, &KFileItemClipboard::cutItemsChanged,
 843             this, &KStandardItemListWidget::slotCutItemsChanged);
 844 }
 845
 846 void KStandardItemListWidget::hideEvent(QHideEvent* event)
 847 {
 848     disconnect(KFileItemClipboard::instance(), &KFileItemClipboard::cutItemsChanged,
 849                this, &KStandardItemListWidget::slotCutItemsChanged);
 850
 851     KItemListWidget::hideEvent(event);
 852 }
 853
 854 void KStandardItemListWidget::slotCutItemsChanged()
 855 {
 856     const QUrl itemUrl = data().value("url").value<QUrl>();
 857     const bool isCut = KFileItemClipboard::instance()->isCut(itemUrl);
 858     if (m_isCut != isCut) {
 859         m_isCut = isCut;
 860         m_pixmap = QPixmap();
 861         m_dirtyContent = true;
 862         update();
 863     }
 864 }
 865
 866 void KStandardItemListWidget::slotRoleEditingCanceled(const QByteArray& role,
 867                                                       const QVariant& value)
 868 {
 869     closeRoleEditor();
 870     emit roleEditingCanceled(index(), role, value);
 871     setEditedRole(QByteArray());
 872 }
 873
 874 void KStandardItemListWidget::slotRoleEditingFinished(const QByteArray& role,
 875                                                       const QVariant& value)
 876 {
 877     closeRoleEditor();
 878     emit roleEditingFinished(index(), role, value);
 879     setEditedRole(QByteArray());
 880 }
 881
 882 void KStandardItemListWidget::triggerCacheRefreshing()
 883 {
 884     if ((!m_dirtyContent && !m_dirtyLayout) || index() < 0) {
 885         return;
 886     }
 887
 888     refreshCache();
 889
 890     const QHash<QByteArray, QVariant> values = data();
 891     m_isExpandable = m_supportsItemExpanding && values["isExpandable"].toBool();
 892     m_isHidden = isHidden();
 893     m_customizedFont = customizedFont(styleOption().font);
 894     m_customizedFontMetrics = QFontMetrics(m_customizedFont);
 895
 896     updateExpansionArea();
 897     updateTextsCache();
 898     updatePixmapCache();
 899
 900     m_dirtyLayout = false;
 901     m_dirtyContent = false;
 902     m_dirtyContentRoles.clear();
 903 }
 904
 905 void KStandardItemListWidget::updateExpansionArea()
 906 {
 907     if (m_supportsItemExpanding) {
 908         const QHash<QByteArray, QVariant> values = data();
 909         const int expandedParentsCount = values.value("expandedParentsCount", 0).toInt();
 910         if (expandedParentsCount >= 0) {
 911             const KItemListStyleOption& option = styleOption();
 912             const qreal widgetHeight = size().height();
 913             const qreal inc = (widgetHeight - option.iconSize) / 2;
 914             const qreal x = expandedParentsCount * widgetHeight + inc;
 915             const qreal y = inc;
 916             m_expansionArea = QRectF(x, y, option.iconSize, option.iconSize);
 917             return;
 918         }
 919     }
 920
 921     m_expansionArea = QRectF();
 922 }
 923
 924 void KStandardItemListWidget::updatePixmapCache()
 925 {
 926     // Precondition: Requires already updated m_textPos values to calculate
 927     // the remaining height when the alignment is vertical.
 928
 929     const QSizeF widgetSize = size();
 930     const bool iconOnTop = (m_layout == IconsLayout);
 931     const KItemListStyleOption& option = styleOption();
 932     const qreal padding = option.padding;
 933
 934     const int maxIconWidth = iconOnTop ? widgetSize.width() - 2 * padding : option.iconSize;
 935     const int maxIconHeight = option.iconSize;
 936
 937     const QHash<QByteArray, QVariant> values = data();
 938
 939     bool updatePixmap = (m_pixmap.width() != maxIconWidth || m_pixmap.height() != maxIconHeight);
 940     if (!updatePixmap && m_dirtyContent) {
 941         updatePixmap = m_dirtyContentRoles.isEmpty()
 942                        || m_dirtyContentRoles.contains("iconPixmap")
 943                        || m_dirtyContentRoles.contains("iconName")
 944                        || m_dirtyContentRoles.contains("iconOverlays");
 945     }
 946
 947     if (updatePixmap) {
 948         m_pixmap = values["iconPixmap"].value<QPixmap>();
 949         if (m_pixmap.isNull()) {
 950             // Use the icon that fits to the MIME-type
 951             QString iconName = values["iconName"].toString();
 952             if (iconName.isEmpty()) {
 953                 // The icon-name has not been not resolved by KFileItemModelRolesUpdater,
 954                 // use a generic icon as fallback
 955                 iconName = QLatin1String("unknown");
 956             }
 957             const QStringList overlays = values["iconOverlays"].toStringList();
 958             m_pixmap = pixmapForIcon(iconName, overlays, maxIconHeight);
 959 //             qDebug() << "attempt 2 - setting pixmap to one of size " << m_pixmap.size() << m_pixmap.devicePixelRatio();
 960
 961         } else if (m_pixmap.width() / qApp->devicePixelRatio() != maxIconWidth || m_pixmap.height() / qApp->devicePixelRatio() != maxIconHeight) {
 962             // A custom pixmap has been applied. Assure that the pixmap
 963             // is scaled to the maximum available size.
 964             KPixmapModifier::scale(m_pixmap, QSize(maxIconWidth, maxIconHeight) * qApp->devicePixelRatio());
 965         }
 966
 967         if (m_isCut) {
 968             KIconEffect* effect = KIconLoader::global()->iconEffect();
 969             m_pixmap = effect->apply(m_pixmap, KIconLoader::Desktop, KIconLoader::DisabledState);
 970         }
 971
 972         if (m_isHidden) {
 973             KIconEffect::semiTransparent(m_pixmap);
 974         }
 975
 976         if (m_layout == IconsLayout && isSelected()) {
 977             const QColor color = palette().brush(QPalette::Normal, QPalette::Highlight).color();
 978             QImage image = m_pixmap.toImage();
 979             KIconEffect::colorize(image, color, 0.8f);
 980             m_pixmap = QPixmap::fromImage(image);
 981         }
 982     }
 983
 984     if (!m_overlay.isNull()) {
 985         QPainter painter(&m_pixmap);
 986         painter.drawPixmap(0, m_pixmap.height() - m_overlay.height(), m_overlay);
 987     }
 988
 989     int scaledIconSize = 0;
 990     if (iconOnTop) {
 991         const TextInfo* textInfo = m_textInfo.value("text");
 992         scaledIconSize = static_cast<int>(textInfo->pos.y() - 2 * padding);
 993     } else {
 994         const int textRowsCount = (m_layout == CompactLayout) ? visibleRoles().count() : 1;
 995         const qreal requiredTextHeight = textRowsCount * m_customizedFontMetrics.height();
 996         scaledIconSize = (requiredTextHeight < maxIconHeight) ?
 997                            widgetSize.height() - 2 * padding : maxIconHeight;
 998     }
 999
1000     const int maxScaledIconWidth = iconOnTop ? widgetSize.width() - 2 * padding : scaledIconSize;
1001     const int maxScaledIconHeight = scaledIconSize;
1002
1003     m_scaledPixmapSize = m_pixmap.size();
1004     m_scaledPixmapSize.scale(maxScaledIconWidth, maxScaledIconHeight, Qt::KeepAspectRatio);
1005
1006     if (iconOnTop) {
1007         // Center horizontally and align on bottom within the icon-area
1008         m_pixmapPos.setX((widgetSize.width() - m_scaledPixmapSize.width()) / 2);
1009         m_pixmapPos.setY(padding + scaledIconSize - m_scaledPixmapSize.height());
1010     } else {
1011         // Center horizontally and vertically within the icon-area
1012         const TextInfo* textInfo = m_textInfo.value("text");
1013         m_pixmapPos.setX(textInfo->pos.x() - 2 * padding
1014                          - (scaledIconSize + m_scaledPixmapSize.width()) / 2);
1015         m_pixmapPos.setY(padding
1016                          + (scaledIconSize - m_scaledPixmapSize.height()) / 2);
1017     }
1018
1019     m_iconRect = QRectF(m_pixmapPos, QSizeF(m_scaledPixmapSize));
1020
1021     // Prepare the pixmap that is used when the item gets hovered
1022     if (isHovered()) {
1023         m_hoverPixmap = m_pixmap;
1024         KIconEffect* effect = KIconLoader::global()->iconEffect();
1025         // In the KIconLoader terminology, active = hover.
1026         if (effect->hasEffect(KIconLoader::Desktop, KIconLoader::ActiveState)) {
1027             m_hoverPixmap = effect->apply(m_pixmap, KIconLoader::Desktop, KIconLoader::ActiveState);
1028         } else {
1029             m_hoverPixmap = m_pixmap;
1030         }
1031     } else if (hoverOpacity() <= 0.0) {
1032         // No hover animation is ongoing. Clear m_hoverPixmap to save memory.
1033         m_hoverPixmap = QPixmap();
1034     }
1035 }
1036
1037 void KStandardItemListWidget::updateTextsCache()
1038 {
1039     QTextOption textOption;
1040     switch (m_layout) {
1041     case IconsLayout:
1042         textOption.setWrapMode(QTextOption::WrapAtWordBoundaryOrAnywhere);
1043         textOption.setAlignment(Qt::AlignHCenter);
1044         break;
1045     case CompactLayout:
1046     case DetailsLayout:
1047         textOption.setAlignment(Qt::AlignLeft);
1048         textOption.setWrapMode(QTextOption::NoWrap);
1049         break;
1050     default:
1051         Q_ASSERT(false);
1052         break;
1053     }
1054
1055     qDeleteAll(m_textInfo);
1056     m_textInfo.clear();
1057     for (int i = 0; i < m_sortedVisibleRoles.count(); ++i) {
1058         TextInfo* textInfo = new TextInfo();
1059         textInfo->staticText.setTextFormat(Qt::PlainText);
1060         textInfo->staticText.setPerformanceHint(QStaticText::AggressiveCaching);
1061         textInfo->staticText.setTextOption(textOption);
1062         m_textInfo.insert(m_sortedVisibleRoles[i], textInfo);
1063     }
1064
1065     switch (m_layout) {
1066     case IconsLayout:   updateIconsLayoutTextCache(); break;
1067     case CompactLayout: updateCompactLayoutTextCache(); break;
1068     case DetailsLayout: updateDetailsLayoutTextCache(); break;
1069     default: Q_ASSERT(false); break;
1070     }
1071
1072     const TextInfo* ratingTextInfo = m_textInfo.value("rating");
1073     if (ratingTextInfo) {
1074         // The text of the rating-role has been set to empty to get
1075         // replaced by a rating-image showing the rating as stars.
1076         const KItemListStyleOption& option = styleOption();
1077         QSizeF ratingSize = preferredRatingSize(option);
1078
1079         const qreal availableWidth = (m_layout == DetailsLayout)
1080                                      ? columnWidth("rating") - columnPadding(option)
1081                                      : size().width();
1082         if (ratingSize.width() > availableWidth) {
1083             ratingSize.rwidth() = availableWidth;
1084         }
1085         m_rating = QPixmap(ratingSize.toSize());
1086         m_rating.fill(Qt::transparent);
1087
1088         QPainter painter(&m_rating);
1089         const QRect rect(0, 0, m_rating.width(), m_rating.height());
1090         const int rating = data().value("rating").toInt();
1091         KRatingPainter::paintRating(&painter, rect, Qt::AlignJustify | Qt::AlignVCenter, rating);
1092     } else if (!m_rating.isNull()) {
1093         m_rating = QPixmap();
1094     }
1095 }
1096
1097 void KStandardItemListWidget::updateIconsLayoutTextCache()
1098 {
1099     //      +------+
1100     //      | Icon |
1101     //      +------+
1102     //
1103     //    Name role that
1104     // might get wrapped above
1105     //    several lines.
1106     //  Additional role 1
1107     //  Additional role 2
1108
1109     const QHash<QByteArray, QVariant> values = data();
1110
1111     const KItemListStyleOption& option = styleOption();
1112     const qreal padding = option.padding;
1113     const qreal maxWidth = size().width() - 2 * padding;
1114     const qreal widgetHeight = size().height();
1115     const qreal lineSpacing = m_customizedFontMetrics.lineSpacing();
1116
1117     // Initialize properties for the "text" role. It will be used as anchor
1118     // for initializing the position of the other roles.
1119     TextInfo* nameTextInfo = m_textInfo.value("text");
1120     const QString nameText = KStringHandler::preProcessWrap(values["text"].toString());
1121     nameTextInfo->staticText.setText(nameText);
1122
1123     // Calculate the number of lines required for the name and the required width
1124     qreal nameWidth = 0;
1125     qreal nameHeight = 0;
1126     QTextLine line;
1127
1128     QTextLayout layout(nameTextInfo->staticText.text(), m_customizedFont);
1129     layout.setTextOption(nameTextInfo->staticText.textOption());
1130     layout.beginLayout();
1131     int nameLineIndex = 0;
1132     while ((line = layout.createLine()).isValid()) {
1133         line.setLineWidth(maxWidth);
1134         nameWidth = qMax(nameWidth, line.naturalTextWidth());
1135         nameHeight += line.height();
1136
1137         ++nameLineIndex;
1138         if (nameLineIndex == option.maxTextLines) {
1139             // The maximum number of textlines has been reached. If this is
1140             // the case provide an elided text if necessary.
1141             const int textLength = line.textStart() + line.textLength();
1142             if (textLength < nameText.length()) {
1143                 // Elide the last line of the text
1144                 qreal elidingWidth = maxWidth;
1145                 qreal lastLineWidth;
1146                 do {
1147                     QString lastTextLine = nameText.mid(line.textStart());
1148                     lastTextLine = m_customizedFontMetrics.elidedText(lastTextLine,
1149                                                                       Qt::ElideRight,
1150                                                                       elidingWidth);
1151                     const QString elidedText = nameText.left(line.textStart()) + lastTextLine;
1152                     nameTextInfo->staticText.setText(elidedText);
1153
1154                     lastLineWidth = m_customizedFontMetrics.boundingRect(lastTextLine).width();
1155
1156                     // We do the text eliding in a loop with decreasing width (1 px / iteration)
1157                     // to avoid problems related to different width calculation code paths
1158                     // within Qt. (see bug 337104)
1159                     elidingWidth -= 1.0;
1160                 } while (lastLineWidth > maxWidth);
1161
1162                 nameWidth = qMax(nameWidth, lastLineWidth);
1163             }
1164             break;
1165         }
1166     }
1167     layout.endLayout();
1168
1169     // Use one line for each additional information
1170     const int additionalRolesCount = qMax(visibleRoles().count() - 1, 0);
1171     nameTextInfo->staticText.setTextWidth(maxWidth);
1172     nameTextInfo->pos = QPointF(padding, widgetHeight -
1173                                          nameHeight -
1174                                          additionalRolesCount * lineSpacing -
1175                                          padding);
1176     m_textRect = QRectF(padding + (maxWidth - nameWidth) / 2,
1177                         nameTextInfo->pos.y(),
1178                         nameWidth,
1179                         nameHeight);
1180
1181     // Calculate the position for each additional information
1182     qreal y = nameTextInfo->pos.y() + nameHeight;
1183     foreach (const QByteArray& role, m_sortedVisibleRoles) {
1184         if (role == "text") {
1185             continue;
1186         }
1187
1188         const QString text = roleText(role, values);
1189         TextInfo* textInfo = m_textInfo.value(role);
1190         textInfo->staticText.setText(text);
1191
1192         qreal requiredWidth = 0;
1193
1194         QTextLayout layout(text, m_customizedFont);
1195         QTextOption textOption;
1196         textOption.setWrapMode(QTextOption::NoWrap);
1197         layout.setTextOption(textOption);
1198
1199         layout.beginLayout();
1200         QTextLine textLine = layout.createLine();
1201         if (textLine.isValid()) {
1202             textLine.setLineWidth(maxWidth);
1203             requiredWidth = textLine.naturalTextWidth();
1204             if (requiredWidth > maxWidth) {
1205                 const QString elidedText = m_customizedFontMetrics.elidedText(text, Qt::ElideRight, maxWidth);
1206                 textInfo->staticText.setText(elidedText);
1207                 requiredWidth = m_customizedFontMetrics.width(elidedText);
1208             } else if (role == "rating") {
1209                 // Use the width of the rating pixmap, because the rating text is empty.
1210                 requiredWidth = m_rating.width();
1211             }
1212         }
1213         layout.endLayout();
1214
1215         textInfo->pos = QPointF(padding, y);
1216         textInfo->staticText.setTextWidth(maxWidth);
1217
1218         const QRectF textRect(padding + (maxWidth - requiredWidth) / 2, y, requiredWidth, lineSpacing);
1219         m_textRect |= textRect;
1220
1221         y += lineSpacing;
1222     }
1223
1224     // Add a padding to the text rectangle
1225     m_textRect.adjust(-padding, -padding, padding, padding);
1226 }
1227
1228 void KStandardItemListWidget::updateCompactLayoutTextCache()
1229 {
1230     // +------+  Name role
1231     // | Icon |  Additional role 1
1232     // +------+  Additional role 2
1233
1234     const QHash<QByteArray, QVariant> values = data();
1235
1236     const KItemListStyleOption& option = styleOption();
1237     const qreal widgetHeight = size().height();
1238     const qreal lineSpacing = m_customizedFontMetrics.lineSpacing();
1239     const qreal textLinesHeight = qMax(visibleRoles().count(), 1) * lineSpacing;
1240     const int scaledIconSize = (textLinesHeight < option.iconSize) ? widgetHeight - 2 * option.padding : option.iconSize;
1241
1242     qreal maximumRequiredTextWidth = 0;
1243     const qreal x = option.padding * 3 + scaledIconSize;
1244     qreal y = qRound((widgetHeight - textLinesHeight) / 2);
1245     const qreal maxWidth = size().width() - x - option.padding;
1246     foreach (const QByteArray& role, m_sortedVisibleRoles) {
1247         const QString text = roleText(role, values);
1248         TextInfo* textInfo = m_textInfo.value(role);
1249         textInfo->staticText.setText(text);
1250
1251         qreal requiredWidth = m_customizedFontMetrics.width(text);
1252         if (requiredWidth > maxWidth) {
1253             requiredWidth = maxWidth;
1254             const QString elidedText = m_customizedFontMetrics.elidedText(text, Qt::ElideRight, maxWidth);
1255             textInfo->staticText.setText(elidedText);
1256         }
1257
1258         textInfo->pos = QPointF(x, y);
1259         textInfo->staticText.setTextWidth(maxWidth);
1260
1261         maximumRequiredTextWidth = qMax(maximumRequiredTextWidth, requiredWidth);
1262
1263         y += lineSpacing;
1264     }
1265
1266     m_textRect = QRectF(x - 2 * option.padding, 0, maximumRequiredTextWidth + 3 * option.padding, widgetHeight);
1267 }
1268
1269 void KStandardItemListWidget::updateDetailsLayoutTextCache()
1270 {
1271     // Precondition: Requires already updated m_expansionArea
1272     // to determine the left position.
1273
1274     // +------+
1275     // | Icon |  Name role   Additional role 1   Additional role 2
1276     // +------+
1277     m_textRect = QRectF();
1278
1279     const KItemListStyleOption& option = styleOption();
1280     const QHash<QByteArray, QVariant> values = data();
1281
1282     const qreal widgetHeight = size().height();
1283     const int scaledIconSize = widgetHeight - 2 * option.padding;
1284     const int fontHeight = m_customizedFontMetrics.height();
1285
1286     const qreal columnWidthInc = columnPadding(option);
1287     qreal firstColumnInc = scaledIconSize;
1288     if (m_supportsItemExpanding) {
1289         firstColumnInc += (m_expansionArea.left() + m_expansionArea.right() + widgetHeight) / 2;
1290     } else {
1291         firstColumnInc += option.padding;
1292     }
1293
1294     qreal x = firstColumnInc;
1295     const qreal y = qMax(qreal(option.padding), (widgetHeight - fontHeight) / 2);
1296
1297     foreach (const QByteArray& role, m_sortedVisibleRoles) {
1298         QString text = roleText(role, values);
1299
1300         // Elide the text in case it does not fit into the available column-width
1301         qreal requiredWidth = m_customizedFontMetrics.width(text);
1302         const qreal roleWidth = columnWidth(role);
1303         qreal availableTextWidth = roleWidth - columnWidthInc;
1304
1305         const bool isTextRole = (role == "text");
1306         if (isTextRole) {
1307             availableTextWidth -= firstColumnInc;
1308         }
1309
1310         if (requiredWidth > availableTextWidth) {
1311             text = m_customizedFontMetrics.elidedText(text, Qt::ElideRight, availableTextWidth);
1312             requiredWidth = m_customizedFontMetrics.width(text);
1313         }
1314
1315         TextInfo* textInfo = m_textInfo.value(role);
1316         textInfo->staticText.setText(text);
1317         textInfo->pos = QPointF(x + columnWidthInc / 2, y);
1318         x += roleWidth;
1319
1320         if (isTextRole) {
1321             const qreal textWidth = option.extendedSelectionRegion
1322                                     ? size().width() - textInfo->pos.x()
1323                                     : requiredWidth + 2 * option.padding;
1324             m_textRect = QRectF(textInfo->pos.x() - 2 * option.padding, 0,
1325                                 textWidth + option.padding, size().height());
1326
1327             // The column after the name should always be aligned on the same x-position independent
1328             // from the expansion-level shown in the name column
1329             x -= firstColumnInc;
1330         } else if (isRoleRightAligned(role)) {
1331             textInfo->pos.rx() += roleWidth - requiredWidth - columnWidthInc;
1332         }
1333     }
1334 }
1335
1336 void KStandardItemListWidget::updateAdditionalInfoTextColor()
1337 {
1338     QColor c1;
1339     if (m_customTextColor.isValid()) {
1340         c1 = m_customTextColor;
1341     } else if (isSelected() && m_layout != DetailsLayout) {
1342         c1 = styleOption().palette.highlightedText().color();
1343     } else {
1344         c1 = styleOption().palette.text().color();
1345     }
1346
1347     // For the color of the additional info the inactive text color
1348     // is not used as this might lead to unreadable text for some color schemes. Instead
1349     // the text color c1 is slightly mixed with the background color.
1350     const QColor c2 = styleOption().palette.base().color();
1351     const int p1 = 70;
1352     const int p2 = 100 - p1;
1353     m_additionalInfoTextColor = QColor((c1.red()   * p1 + c2.red()   * p2) / 100,
1354                                        (c1.green() * p1 + c2.green() * p2) / 100,
1355                                        (c1.blue()  * p1 + c2.blue()  * p2) / 100);
1356 }
1357
1358 void KStandardItemListWidget::drawPixmap(QPainter* painter, const QPixmap& pixmap)
1359 {
1360     if (m_scaledPixmapSize * qApp->devicePixelRatio() != pixmap.size()) {
1361         QPixmap scaledPixmap = pixmap;
1362         KPixmapModifier::scale(scaledPixmap, m_scaledPixmapSize * qApp->devicePixelRatio());
1363         painter->drawPixmap(m_pixmapPos, scaledPixmap);
1364
1365 #ifdef KSTANDARDITEMLISTWIDGET_DEBUG
1366         painter->setPen(Qt::blue);
1367         painter->drawRect(QRectF(m_pixmapPos, QSizeF(m_scaledPixmapSize)));
1368 #endif
1369     } else {
1370         painter->drawPixmap(m_pixmapPos, pixmap);
1371     }
1372 }
1373
1374 void KStandardItemListWidget::drawSiblingsInformation(QPainter* painter)
1375 {
1376     const int siblingSize = size().height();
1377     const int x = (m_expansionArea.left() + m_expansionArea.right() - siblingSize) / 2;
1378     QRect siblingRect(x, 0, siblingSize, siblingSize);
1379
1380     QStyleOption option;
1381     option.palette.setColor(QPalette::Text, option.palette.color(normalTextColorRole()));
1382     bool isItemSibling = true;
1383
1384     const QBitArray siblings = siblingsInformation();
1385     for (int i = siblings.count() - 1; i >= 0; --i) {
1386         option.rect = siblingRect;
1387         option.state = siblings.at(i) ? QStyle::State_Sibling : QStyle::State_None;
1388
1389         if (isItemSibling) {
1390             option.state |= QStyle::State_Item;
1391             if (m_isExpandable) {
1392                 option.state |= QStyle::State_Children;
1393             }
1394             if (data()["isExpanded"].toBool()) {
1395                 option.state |= QStyle::State_Open;
1396             }
1397             isItemSibling = false;
1398         }
1399
1400         style()->drawPrimitive(QStyle::PE_IndicatorBranch, &option, painter);
1401
1402         siblingRect.translate(-siblingRect.width(), 0);
1403     }
1404 }
1405
1406 QRectF KStandardItemListWidget::roleEditingRect(const QByteArray& role) const
1407 {
1408     const TextInfo* textInfo = m_textInfo.value(role);
1409     if (!textInfo) {
1410         return QRectF();
1411     }
1412
1413     QRectF rect(textInfo->pos, textInfo->staticText.size());
1414     if (m_layout == DetailsLayout) {
1415         rect.setWidth(columnWidth(role) - rect.x());
1416     }
1417
1418     return rect;
1419 }
1420
1421 void KStandardItemListWidget::closeRoleEditor()
1422 {
1423     disconnect(m_roleEditor, &KItemListRoleEditor::roleEditingCanceled,
1424                this, &KStandardItemListWidget::slotRoleEditingCanceled);
1425     disconnect(m_roleEditor, &KItemListRoleEditor::roleEditingFinished,
1426                this, &KStandardItemListWidget::slotRoleEditingFinished);
1427
1428     if (m_roleEditor->hasFocus()) {
1429         // If the editing was not ended by a FocusOut event, we have
1430         // to transfer the keyboard focus back to the KItemListContainer.
1431         scene()->views()[0]->parentWidget()->setFocus();
1432     }
1433
1434     if (m_oldRoleEditor) {
1435         m_oldRoleEditor->deleteLater();
1436     }
1437     m_oldRoleEditor = m_roleEditor;
1438     m_roleEditor->hide();
1439     m_roleEditor = 0;
1440 }
1441
1442 QPixmap KStandardItemListWidget::pixmapForIcon(const QString& name, const QStringList& overlays, int size)
1443 {
1444     size *= qApp->devicePixelRatio();
1445     const QString key = "KStandardItemListWidget:" % name % ":" % overlays.join(":") % ":" % QString::number(size);
1446     QPixmap pixmap;
1447
1448     if (!QPixmapCache::find(key, pixmap)) {
1449         const QIcon icon = QIcon::fromTheme(name);
1450
1451         int requestedSize;
1452         if (size <= KIconLoader::SizeSmall) {
1453             requestedSize = KIconLoader::SizeSmall;
1454         } else if (size <= KIconLoader::SizeSmallMedium) {
1455             requestedSize = KIconLoader::SizeSmallMedium;
1456         } else if (size <= KIconLoader::SizeMedium) {
1457             requestedSize = KIconLoader::SizeMedium;
1458         } else if (size <= KIconLoader::SizeLarge) {
1459             requestedSize = KIconLoader::SizeLarge;
1460         } else if (size <= KIconLoader::SizeHuge) {
1461             requestedSize = KIconLoader::SizeHuge;
1462         } else if (size <= KIconLoader::SizeEnormous) {
1463             requestedSize = KIconLoader::SizeEnormous;
1464         } else if (size <= KIconLoader::SizeEnormous * 2) {
1465             requestedSize = KIconLoader::SizeEnormous * 2;
1466         } else {
1467             requestedSize = size;
1468         }
1469
1470         pixmap = icon.pixmap(requestedSize / qApp->devicePixelRatio(), requestedSize / qApp->devicePixelRatio());
1471         if (requestedSize != size) {
1472             KPixmapModifier::scale(pixmap, QSize(size, size));
1473         }
1474
1475         // Strangely KFileItem::overlays() returns empty string-values, so
1476         // we need to check first whether an overlay must be drawn at all.
1477         // It is more efficient to do it here, as KIconLoader::drawOverlays()
1478         // assumes that an overlay will be drawn and has some additional
1479         // setup time.
1480         foreach (const QString& overlay, overlays) {
1481             if (!overlay.isEmpty()) {
1482                 // There is at least one overlay, draw all overlays above m_pixmap
1483                 // and cancel the check
1484                 KIconLoader::global()->drawOverlays(overlays, pixmap, KIconLoader::Desktop);
1485                 break;
1486             }
1487         }
1488
1489         QPixmapCache::insert(key, pixmap);
1490     }
1491     pixmap.setDevicePixelRatio(qApp->devicePixelRatio());
1492
1493     return pixmap;
1494 }
1495
1496 QSizeF KStandardItemListWidget::preferredRatingSize(const KItemListStyleOption& option)
1497 {
1498     const qreal height = option.fontMetrics.ascent();
1499     return QSizeF(height * 5, height);
1500 }
1501
1502 qreal KStandardItemListWidget::columnPadding(const KItemListStyleOption& option)
1503 {
1504     return option.padding * 6;
1505 }
1506