src/kitemviews/kfileitemlistwidget.cpp

   1 /***************************************************************************
   2  *   Copyright (C) 2011 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 "kfileitemlistwidget.h"
  21
  22 #include "kfileitemmodel.h"
  23 #include "kitemlistview.h"
  24 #include "kpixmapmodifier_p.h"
  25
  26 #include <KIcon>
  27 #include <KIconEffect>
  28 #include <KIconLoader>
  29 #include <KLocale>
  30 #include <KStringHandler>
  31 #include <KDebug>
  32
  33 #include <QFontMetricsF>
  34 #include <QGraphicsSceneResizeEvent>
  35 #include <QPainter>
  36 #include <QStyleOption>
  37 #include <QTextLayout>
  38 #include <QTextLine>
  39
  40 //#define KFILEITEMLISTWIDGET_DEBUG
  41
  42 KFileItemListWidget::KFileItemListWidget(QGraphicsItem* parent) :
  43     KItemListWidget(parent),
  44     m_isDir(false),
  45     m_dirtyLayout(true),
  46     m_dirtyContent(true),
  47     m_dirtyContentRoles(),
  48     m_layout(IconsLayout),
  49     m_pixmapPos(),
  50     m_pixmap(),
  51     m_scaledPixmapSize(),
  52     m_hoverPixmapRect(),
  53     m_hoverPixmap(),
  54     m_textPos(),
  55     m_text(),
  56     m_textRect(),
  57     m_sortedVisibleRoles(),
  58     m_expansionArea(),
  59     m_customTextColor(),
  60     m_additionalInfoTextColor(),
  61     m_overlay()
  62 {
  63     for (int i = 0; i < TextIdCount; ++i) {
  64         m_text[i].setTextFormat(Qt::PlainText);
  65         m_text[i].setPerformanceHint(QStaticText::AggressiveCaching);
  66     }
  67 }
  68
  69 KFileItemListWidget::~KFileItemListWidget()
  70 {
  71 }
  72
  73 void KFileItemListWidget::setLayout(Layout layout)
  74 {
  75     if (m_layout != layout) {
  76         m_layout = layout;
  77         m_dirtyLayout = true;
  78         update();
  79     }
  80 }
  81
  82 KFileItemListWidget::Layout KFileItemListWidget::layout() const
  83 {
  84     return m_layout;
  85 }
  86
  87 void KFileItemListWidget::paint(QPainter* painter, const QStyleOptionGraphicsItem* option, QWidget* widget)
  88 {
  89     KItemListWidget::paint(painter, option, widget);
  90
  91     const_cast<KFileItemListWidget*>(this)->triggerCacheRefreshing();
  92
  93     // Draw expansion toggle '>' or 'V'
  94     if (m_isDir && !m_expansionArea.isEmpty()) {
  95         QStyleOption arrowOption;
  96         arrowOption.rect = m_expansionArea.toRect();
  97         const QStyle::PrimitiveElement arrow = data()["isExpanded"].toBool()
  98                                                ? QStyle::PE_IndicatorArrowDown : QStyle::PE_IndicatorArrowRight;
  99         style()->drawPrimitive(arrow, &arrowOption, painter);
 100     }
 101
 102     const KItemListStyleOption& itemListStyleOption = styleOption();
 103     if (isHovered()) {
 104         // Blend the unhovered and hovered pixmap if the hovering
 105         // animation is ongoing
 106         if (hoverOpacity() < 1.0) {
 107             drawPixmap(painter, m_pixmap);
 108         }
 109
 110         const qreal opacity = painter->opacity();
 111         painter->setOpacity(hoverOpacity() * opacity);
 112         drawPixmap(painter, m_hoverPixmap);
 113         painter->setOpacity(opacity);
 114     } else {
 115         drawPixmap(painter, m_pixmap);
 116     }
 117
 118     painter->setFont(itemListStyleOption.font);
 119     painter->setPen(textColor());
 120     painter->drawStaticText(m_textPos[Name], m_text[Name]);
 121
 122     bool clipAdditionalInfoBounds = false;
 123     if (m_layout == DetailsLayout) {
 124         // Prevent a possible overlapping of the additional-information texts
 125         // with the icon. This can happen if the user has minimized the width
 126         // of the name-column to a very small value.
 127         const qreal minX = m_pixmapPos.x() + m_pixmap.width() + 4 * itemListStyleOption.margin;
 128         if (m_textPos[Name + 1].x() < minX) {
 129             clipAdditionalInfoBounds = true;
 130             painter->save();
 131             painter->setClipRect(minX, 0, size().width() - minX, size().height(), Qt::IntersectClip);
 132         }
 133     }
 134
 135     painter->setPen(m_additionalInfoTextColor);
 136     painter->setFont(itemListStyleOption.font);
 137     for (int i = Name + 1; i < TextIdCount; ++i) {
 138         painter->drawStaticText(m_textPos[i], m_text[i]);
 139     }
 140
 141     if (clipAdditionalInfoBounds) {
 142         painter->restore();
 143     }
 144
 145 #ifdef KFILEITEMLISTWIDGET_DEBUG
 146     painter->setPen(Qt::red);
 147     painter->setBrush(Qt::NoBrush);
 148     painter->drawText(QPointF(0, itemListStyleOption.fontMetrics.height()), QString::number(index()));
 149     painter->drawRect(rect());
 150 #endif
 151 }
 152
 153 QRectF KFileItemListWidget::iconRect() const
 154 {
 155     const_cast<KFileItemListWidget*>(this)->triggerCacheRefreshing();
 156
 157     QRectF bounds = m_hoverPixmapRect;
 158     const qreal margin = styleOption().margin;
 159     bounds.adjust(-margin, -margin, margin, margin);
 160     return bounds;
 161 }
 162
 163 QRectF KFileItemListWidget::textRect() const
 164 {
 165     const_cast<KFileItemListWidget*>(this)->triggerCacheRefreshing();
 166     return m_textRect;
 167 }
 168
 169 QRectF KFileItemListWidget::expansionToggleRect() const
 170 {
 171     const_cast<KFileItemListWidget*>(this)->triggerCacheRefreshing();
 172     return m_isDir ? m_expansionArea : QRectF();
 173 }
 174
 175 QRectF KFileItemListWidget::selectionToggleRect() const
 176 {
 177     const_cast<KFileItemListWidget*>(this)->triggerCacheRefreshing();
 178
 179     const int iconHeight = m_pixmap.height();
 180
 181     int toggleSize = KIconLoader::SizeSmall;
 182     if (iconHeight >= KIconLoader::SizeEnormous) {
 183         toggleSize = KIconLoader::SizeMedium;
 184     } else if (iconHeight >= KIconLoader::SizeLarge) {
 185         toggleSize = KIconLoader::SizeSmallMedium;
 186     }
 187
 188     QPointF pos = iconRect().topLeft();
 189
 190     // If the selection toggle has a very small distance to the
 191     // widget borders, the size of the selection toggle will get
 192     // increased to prevent an accidental clicking of the item
 193     // when trying to hit the toggle.
 194     const int widgetHeight = size().height();
 195     const int widgetWidth = size().width();
 196     const int minMargin = 2;
 197
 198     if (toggleSize + minMargin * 2 >= widgetHeight) {
 199         toggleSize = widgetHeight;
 200         pos.setY(0);
 201     }
 202     if (toggleSize + minMargin * 2 >= widgetWidth) {
 203         toggleSize = widgetWidth;
 204         pos.setX(0);
 205     }
 206
 207     return QRectF(pos, QSizeF(toggleSize, toggleSize));
 208 }
 209
 210 QString KFileItemListWidget::roleText(const QByteArray& role, const QHash<QByteArray, QVariant>& values)
 211 {
 212     QString text;
 213     const QVariant roleValue = values.value(role);
 214
 215     switch (roleTextId(role)) {
 216     case Name:
 217     case Permissions:
 218     case Owner:
 219     case Group:
 220     case Type:
 221     case Destination:
 222     case Path:
 223         text = roleValue.toString();
 224         break;
 225
 226     case Size: {
 227         if (values.value("isDir").toBool()) {
 228             // The item represents a directory. Show the number of sub directories
 229             // instead of the file size of the directory.
 230             if (roleValue.isNull()) {
 231                 text = i18nc("@item:intable", "Unknown");
 232             } else {
 233                 const KIO::filesize_t size = roleValue.value<KIO::filesize_t>();
 234                 text = i18ncp("@item:intable", "%1 item", "%1 items", size);
 235             }
 236         } else {
 237             // Show the size in kilobytes (always round up)
 238             const KLocale* locale = KGlobal::locale();
 239             const int roundInc = (locale->binaryUnitDialect() == KLocale::MetricBinaryDialect) ? 499 : 511;
 240             const KIO::filesize_t size = roleValue.value<KIO::filesize_t>() + roundInc;
 241             text = locale->formatByteSize(size, 0, KLocale::DefaultBinaryDialect, KLocale::UnitKiloByte);
 242         }
 243         break;
 244     }
 245
 246     case Date: {
 247         const QDateTime dateTime = roleValue.toDateTime();
 248         text = KGlobal::locale()->formatDateTime(dateTime);
 249         break;
 250     }
 251
 252     default:
 253         Q_ASSERT(false);
 254         break;
 255     }
 256
 257     return text;
 258 }
 259
 260 void KFileItemListWidget::invalidateCache()
 261 {
 262     m_dirtyLayout = true;
 263     m_dirtyContent = true;
 264 }
 265
 266 void KFileItemListWidget::refreshCache()
 267 {
 268 }
 269
 270 void KFileItemListWidget::setTextColor(const QColor& color)
 271 {
 272     if (color != m_customTextColor) {
 273         m_customTextColor = color;
 274         updateAdditionalInfoTextColor();
 275         update();
 276     }
 277 }
 278
 279 QColor KFileItemListWidget::textColor() const
 280 {
 281     if (m_customTextColor.isValid()) {
 282         return m_customTextColor;
 283     }
 284
 285     const QPalette::ColorGroup group = isActiveWindow() ? QPalette::Active : QPalette::Inactive;
 286     const QPalette::ColorRole role = isSelected() ? QPalette::HighlightedText : QPalette::Text;
 287     return styleOption().palette.brush(group, role).color();
 288 }
 289
 290 void KFileItemListWidget::setOverlay(const QPixmap& overlay)
 291 {
 292     m_overlay = overlay;
 293     m_dirtyContent = true;
 294     update();
 295 }
 296
 297 QPixmap KFileItemListWidget::overlay() const
 298 {
 299     return m_overlay;
 300 }
 301
 302 void KFileItemListWidget::dataChanged(const QHash<QByteArray, QVariant>& current,
 303                                       const QSet<QByteArray>& roles)
 304 {
 305     KItemListWidget::dataChanged(current, roles);
 306     m_dirtyContent = true;
 307
 308     QSet<QByteArray> dirtyRoles;
 309     if (roles.isEmpty()) {
 310         dirtyRoles = visibleRoles().toSet();
 311         dirtyRoles.insert("iconPixmap");
 312         dirtyRoles.insert("iconName");
 313     } else {
 314         dirtyRoles = roles;
 315     }
 316
 317     QSetIterator<QByteArray> it(dirtyRoles);
 318     while (it.hasNext()) {
 319         const QByteArray& role = it.next();
 320         m_dirtyContentRoles.insert(role);
 321     }
 322 }
 323
 324 void KFileItemListWidget::visibleRolesChanged(const QList<QByteArray>& current,
 325                                               const QList<QByteArray>& previous)
 326 {
 327     KItemListWidget::visibleRolesChanged(current, previous);
 328     m_sortedVisibleRoles = current;
 329     m_dirtyLayout = true;
 330 }
 331
 332 void KFileItemListWidget::visibleRolesSizesChanged(const QHash<QByteArray, QSizeF>& current,
 333                                                    const QHash<QByteArray, QSizeF>& previous)
 334 {
 335     KItemListWidget::visibleRolesSizesChanged(current, previous);
 336     m_dirtyLayout = true;
 337 }
 338
 339 void KFileItemListWidget::styleOptionChanged(const KItemListStyleOption& current,
 340                                              const KItemListStyleOption& previous)
 341 {
 342     KItemListWidget::styleOptionChanged(current, previous);
 343     updateAdditionalInfoTextColor();
 344     m_dirtyLayout = true;
 345 }
 346
 347 void KFileItemListWidget::hoveredChanged(bool hovered)
 348 {
 349     Q_UNUSED(hovered);
 350     m_dirtyLayout = true;
 351 }
 352
 353 void KFileItemListWidget::selectedChanged(bool selected)
 354 {
 355     Q_UNUSED(selected);
 356     updateAdditionalInfoTextColor();
 357 }
 358
 359 void KFileItemListWidget::resizeEvent(QGraphicsSceneResizeEvent* event)
 360 {
 361     KItemListWidget::resizeEvent(event);
 362     m_dirtyLayout = true;
 363 }
 364
 365 void KFileItemListWidget::triggerCacheRefreshing()
 366 {
 367     if ((!m_dirtyContent && !m_dirtyLayout) || index() < 0) {
 368         return;
 369     }
 370
 371     refreshCache();
 372
 373     m_isDir = data()["isDir"].toBool();
 374
 375     updateExpansionArea();
 376     updateTextsCache();
 377     updatePixmapCache();
 378
 379     m_dirtyLayout = false;
 380     m_dirtyContent = false;
 381     m_dirtyContentRoles.clear();
 382 }
 383
 384 void KFileItemListWidget::updateExpansionArea()
 385 {
 386     if (m_layout == DetailsLayout) {
 387         const QHash<QByteArray, QVariant> values = data();
 388         Q_ASSERT(values.contains("expansionLevel"));
 389         const KItemListStyleOption& option = styleOption();
 390         const int expansionLevel = values.value("expansionLevel", 0).toInt();
 391
 392         const qreal widgetHeight = size().height();
 393         const qreal expansionLevelSize = KIconLoader::SizeSmall;
 394         const qreal x = option.margin + expansionLevel * widgetHeight;
 395         const qreal y = (widgetHeight - expansionLevelSize) / 2;
 396         m_expansionArea = QRectF(x, y, expansionLevelSize, expansionLevelSize);
 397     } else {
 398         m_expansionArea = QRectF();
 399     }
 400 }
 401
 402 void KFileItemListWidget::updatePixmapCache()
 403 {
 404     // Precondition: Requires already updated m_textPos values to calculate
 405     // the remaining height when the alignment is vertical.
 406
 407     const bool iconOnTop = (m_layout == IconsLayout);
 408     const KItemListStyleOption& option = styleOption();
 409     const int iconHeight = option.iconSize;
 410
 411     const QHash<QByteArray, QVariant> values = data();
 412     const QSizeF widgetSize = size();
 413
 414     int scaledIconHeight = 0;
 415     if (iconOnTop) {
 416         scaledIconHeight = static_cast<int>(m_textPos[Name].y() - 3 * option.margin);
 417     } else {
 418         const int textRowsCount = (m_layout == CompactLayout) ? visibleRoles().count() : 1;
 419         const qreal requiredTextHeight = textRowsCount * option.fontMetrics.height();
 420         scaledIconHeight = (requiredTextHeight < iconHeight) ? widgetSize.height() - 2 * option.margin : iconHeight;
 421     }
 422
 423     bool updatePixmap = (iconHeight != m_pixmap.height());
 424     if (!updatePixmap && m_dirtyContent) {
 425         updatePixmap = m_dirtyContentRoles.isEmpty()
 426                        || m_dirtyContentRoles.contains("iconPixmap")
 427                        || m_dirtyContentRoles.contains("iconName");
 428     }
 429
 430     if (updatePixmap) {
 431         m_pixmap = values["iconPixmap"].value<QPixmap>();
 432         if (m_pixmap.isNull()) {
 433             // Use the icon that fits to the MIME-type
 434             QString iconName = values["iconName"].toString();
 435             if (iconName.isEmpty()) {
 436                 // The icon-name has not been not resolved by KFileItemModelRolesUpdater,
 437                 // use a generic icon as fallback
 438                 iconName = QLatin1String("unknown");
 439             }
 440             m_pixmap = pixmapForIcon(iconName, iconHeight);
 441             m_hoverPixmapRect.setSize(m_pixmap.size());
 442         } else if (m_pixmap.size() != QSize(iconHeight, iconHeight)) {
 443             // A custom pixmap has been applied. Assure that the pixmap
 444             // is scaled to the available size.
 445             const bool scale = m_pixmap.width() > iconHeight || m_pixmap.height() > iconHeight ||
 446                                (m_pixmap.width() < iconHeight && m_pixmap.height() < iconHeight);
 447             if (scale) {
 448                 KPixmapModifier::scale(m_pixmap, QSize(iconHeight, iconHeight));
 449             }
 450             m_hoverPixmapRect.setSize(m_pixmap.size());
 451
 452             // To simplify the handling of scaling the original pixmap
 453             // will be embedded into a square pixmap.
 454             QPixmap squarePixmap(iconHeight, iconHeight);
 455             squarePixmap.fill(Qt::transparent);
 456
 457             QPainter painter(&squarePixmap);
 458             int x, y;
 459             if (iconOnTop) {
 460                 x = (iconHeight - m_pixmap.width()) / 2;  // Center horizontally
 461                 y = iconHeight - m_pixmap.height();       // Align on bottom
 462                 painter.drawPixmap(x, y, m_pixmap);
 463             } else {
 464                 x = iconHeight - m_pixmap.width();        // Align right
 465                 y = (iconHeight - m_pixmap.height()) / 2; // Center vertically
 466                 painter.drawPixmap(x, y, m_pixmap);
 467             }
 468
 469             m_pixmap = squarePixmap;
 470         } else {
 471             m_hoverPixmapRect.setSize(m_pixmap.size());
 472         }
 473
 474         Q_ASSERT(m_pixmap.height() == iconHeight);
 475     }
 476     if (!m_overlay.isNull()) {
 477         QPainter painter(&m_pixmap);
 478         painter.drawPixmap(0, m_pixmap.height() - m_overlay.height(), m_overlay);
 479     }
 480
 481     m_scaledPixmapSize = QSize(scaledIconHeight, scaledIconHeight);
 482
 483     if (iconOnTop) {
 484         m_pixmapPos.setX((widgetSize.width() - m_scaledPixmapSize.width()) / 2);
 485     } else {
 486         m_pixmapPos.setX(m_textPos[Name].x() - 2 * option.margin - scaledIconHeight);
 487     }
 488     m_pixmapPos.setY(option.margin);
 489
 490     // Center the hover rectangle horizontally and align it on bottom
 491     const qreal x = m_pixmapPos.x() + (m_scaledPixmapSize.width() - m_hoverPixmapRect.width()) / 2.0;
 492     const qreal y = m_pixmapPos.y() + m_scaledPixmapSize.height() - m_hoverPixmapRect.height();
 493     m_hoverPixmapRect.moveTopLeft(QPointF(x, y));
 494
 495     // Prepare the pixmap that is used when the item gets hovered
 496     if (isHovered()) {
 497         m_hoverPixmap = m_pixmap;
 498         KIconEffect* effect = KIconLoader::global()->iconEffect();
 499         // In the KIconLoader terminology, active = hover.
 500         if (effect->hasEffect(KIconLoader::Desktop, KIconLoader::ActiveState)) {
 501             m_hoverPixmap =  effect->apply(m_pixmap, KIconLoader::Desktop, KIconLoader::ActiveState);
 502         } else {
 503             m_hoverPixmap = m_pixmap;
 504         }
 505     } else if (hoverOpacity() <= 0.0) {
 506         // No hover animation is ongoing. Clear m_hoverPixmap to save memory.
 507         m_hoverPixmap = QPixmap();
 508     }
 509 }
 510
 511 void KFileItemListWidget::updateTextsCache()
 512 {
 513     QTextOption textOption;
 514     switch (m_layout) {
 515     case IconsLayout:
 516         textOption.setWrapMode(QTextOption::WrapAtWordBoundaryOrAnywhere);
 517         textOption.setAlignment(Qt::AlignHCenter);
 518         break;
 519     case CompactLayout:
 520     case DetailsLayout:
 521         textOption.setAlignment(Qt::AlignLeft);
 522         textOption.setWrapMode(QTextOption::NoWrap);
 523         break;
 524     default:
 525         Q_ASSERT(false);
 526         break;
 527     }
 528
 529     for (int i = 0; i < TextIdCount; ++i) {
 530         m_text[i].setText(QString());
 531         m_text[i].setTextOption(textOption);
 532     }
 533
 534     switch (m_layout) {
 535     case IconsLayout:   updateIconsLayoutTextCache(); break;
 536     case CompactLayout: updateCompactLayoutTextCache(); break;
 537     case DetailsLayout: updateDetailsLayoutTextCache(); break;
 538     default: Q_ASSERT(false); break;
 539     }
 540 }
 541
 542 void KFileItemListWidget::updateIconsLayoutTextCache()
 543 {
 544     //      +------+
 545     //      | Icon |
 546     //      +------+
 547     //
 548     //    Name role that
 549     // might get wrapped above
 550     //    several lines.
 551     //  Additional role 1
 552     //  Additional role 2
 553
 554     const QHash<QByteArray, QVariant> values = data();
 555
 556     const KItemListStyleOption& option = styleOption();
 557     const qreal maxWidth = size().width() - 2 * option.margin;
 558     const qreal widgetHeight = size().height();
 559     const qreal fontHeight = option.fontMetrics.height();
 560
 561     // Initialize properties for the "name" role. It will be used as anchor
 562     // for initializing the position of the other roles.
 563     m_text[Name].setText(KStringHandler::preProcessWrap(values["name"].toString()));
 564
 565     // Calculate the number of lines required for the name and the required width
 566     int textLinesCountForName = 0;
 567     qreal requiredWidthForName = 0;
 568     QTextLine line;
 569
 570     QTextLayout layout(m_text[Name].text(), option.font);
 571     layout.setTextOption(m_text[Name].textOption());
 572     layout.beginLayout();
 573     while ((line = layout.createLine()).isValid()) {
 574         line.setLineWidth(maxWidth);
 575         requiredWidthForName = qMax(requiredWidthForName, line.naturalTextWidth());
 576         ++textLinesCountForName;
 577     }
 578     layout.endLayout();
 579
 580     // Use one line for each additional information
 581     int textLinesCount = textLinesCountForName;
 582     const int additionalRolesCount = qMax(visibleRoles().count() - 1, 0);
 583     textLinesCount += additionalRolesCount;
 584
 585     m_text[Name].setTextWidth(maxWidth);
 586     m_textPos[Name] = QPointF(option.margin, widgetHeight - textLinesCount * fontHeight - option.margin);
 587     m_textRect = QRectF(option.margin + (maxWidth - requiredWidthForName) / 2,
 588                                  m_textPos[Name].y(),
 589                                  requiredWidthForName,
 590                                  m_text[Name].size().height());
 591
 592     // Calculate the position for each additional information
 593     qreal y = m_textPos[Name].y() + textLinesCountForName * fontHeight;
 594     foreach (const QByteArray& role, m_sortedVisibleRoles) {
 595         const TextId textId = roleTextId(role);
 596         if (textId == Name) {
 597             continue;
 598         }
 599
 600         const QString text = roleText(role, values);
 601         m_text[textId].setText(text);
 602
 603         qreal requiredWidth = 0;
 604
 605         QTextLayout layout(text, option.font);
 606         layout.setTextOption(m_text[textId].textOption());
 607         layout.beginLayout();
 608         QTextLine textLine = layout.createLine();
 609         if (textLine.isValid()) {
 610             textLine.setLineWidth(maxWidth);
 611             requiredWidth = textLine.naturalTextWidth();
 612             if (textLine.textLength() < text.length()) {
 613                 // TODO: QFontMetrics::elidedText() works different regarding the given width
 614                 // in comparison to QTextLine::setLineWidth(). It might happen that the text does
 615                 // not get elided although it does not fit into the given width. As workaround
 616                 // the margin is substracted.
 617                 const QString elidedText = option.fontMetrics.elidedText(text, Qt::ElideRight, maxWidth - option.margin);
 618                 m_text[textId].setText(elidedText);
 619             }
 620         }
 621         layout.endLayout();
 622
 623         m_textPos[textId] = QPointF(option.margin, y);
 624         m_text[textId].setTextWidth(maxWidth);
 625
 626         const QRectF textRect(option.margin + (maxWidth - requiredWidth) / 2, y, requiredWidth, fontHeight);
 627         m_textRect |= textRect;
 628
 629         y += fontHeight;
 630     }
 631
 632     // Add a margin to the text rectangle
 633     const qreal margin = option.margin;
 634     m_textRect.adjust(-margin, -margin, margin, margin);
 635 }
 636
 637 void KFileItemListWidget::updateCompactLayoutTextCache()
 638 {
 639     // +------+  Name role
 640     // | Icon |  Additional role 1
 641     // +------+  Additional role 2
 642
 643     const QHash<QByteArray, QVariant> values = data();
 644
 645     const KItemListStyleOption& option = styleOption();
 646     const qreal widgetHeight = size().height();
 647     const qreal fontHeight = option.fontMetrics.height();
 648     const qreal textLinesHeight = qMax(visibleRoles().count(), 1) * fontHeight;
 649     const int scaledIconSize = (textLinesHeight < option.iconSize) ? widgetHeight - 2 * option.margin : option.iconSize;
 650
 651     qreal maximumRequiredTextWidth = 0;
 652     const qreal x = option.margin * 3 + scaledIconSize;
 653     qreal y = (widgetHeight - textLinesHeight) / 2;
 654     const qreal maxWidth = size().width() - x - option.margin;
 655     foreach (const QByteArray& role, m_sortedVisibleRoles) {
 656         const TextId textId = roleTextId(role);
 657
 658         const QString text = roleText(role, values);
 659         m_text[textId].setText(text);
 660
 661         qreal requiredWidth = option.fontMetrics.width(text);
 662         if (requiredWidth > maxWidth) {
 663             requiredWidth = maxWidth;
 664             const QString elidedText = option.fontMetrics.elidedText(text, Qt::ElideRight, maxWidth);
 665             m_text[textId].setText(elidedText);
 666         }
 667
 668         m_textPos[textId] = QPointF(x, y);
 669         m_text[textId].setTextWidth(maxWidth);
 670
 671         maximumRequiredTextWidth = qMax(maximumRequiredTextWidth, requiredWidth);
 672
 673         y += fontHeight;
 674     }
 675
 676     m_textRect = QRectF(x - option.margin, 0, maximumRequiredTextWidth + 2 * option.margin, widgetHeight);
 677 }
 678
 679 void KFileItemListWidget::updateDetailsLayoutTextCache()
 680 {
 681     // Precondition: Requires already updated m_expansionArea
 682     // to determine the left position.
 683
 684     // +------+
 685     // | Icon |  Name role   Additional role 1   Additional role 2
 686     // +------+
 687     m_textRect = QRectF();
 688
 689     const KItemListStyleOption& option = styleOption();
 690     const QHash<QByteArray, QVariant> values = data();
 691
 692     const qreal widgetHeight = size().height();
 693     const int scaledIconSize = widgetHeight - 2 * option.margin;
 694     const int fontHeight = option.fontMetrics.height();
 695
 696     const qreal columnMargin = option.margin * 3;
 697     const qreal firstColumnInc = m_expansionArea.right() + option.margin * 2 + scaledIconSize;
 698     qreal x = firstColumnInc;
 699     const qreal y = qMax(qreal(option.margin), (widgetHeight - fontHeight) / 2);
 700
 701     foreach (const QByteArray& role, m_sortedVisibleRoles) {
 702         const TextId textId = roleTextId(role);
 703
 704         QString text = roleText(role, values);
 705
 706         // Elide the text in case it does not fit into the available column-width
 707         qreal requiredWidth = option.fontMetrics.width(text);
 708         const qreal columnWidth = visibleRolesSizes().value(role, QSizeF(0, 0)).width();
 709         qreal availableTextWidth = columnWidth - 2 * columnMargin;
 710         if (textId == Name) {
 711             availableTextWidth -= firstColumnInc;
 712         }
 713
 714         if (requiredWidth > availableTextWidth) {
 715             text = option.fontMetrics.elidedText(text, Qt::ElideRight, availableTextWidth);
 716             requiredWidth = option.fontMetrics.width(text);
 717         }
 718
 719         m_text[textId].setText(text);
 720         m_textPos[textId] = QPointF(x + columnMargin, y);
 721         x += columnWidth;
 722
 723         switch (textId) {
 724         case Name: {
 725             m_textRect = QRectF(m_textPos[textId].x() - option.margin, 0,
 726                                         requiredWidth + 2 * option.margin, size().height());
 727
 728             // The column after the name should always be aligned on the same x-position independent
 729             // from the expansion-level shown in the name column
 730             x -= firstColumnInc;
 731             break;
 732         }
 733         case Size:
 734             // The values for the size should be right aligned
 735             m_textPos[textId].rx() += columnWidth - requiredWidth - 2 * columnMargin;
 736             break;
 737
 738         default:
 739             break;
 740         }
 741     }
 742 }
 743
 744 void KFileItemListWidget::updateAdditionalInfoTextColor()
 745 {
 746     QColor c1;
 747     if (m_customTextColor.isValid()) {
 748         c1 = m_customTextColor;
 749     } else if (isSelected() && m_layout != DetailsLayout) {
 750         c1 = styleOption().palette.highlightedText().color();
 751     } else {
 752         c1 = styleOption().palette.text().color();
 753     }
 754
 755     // For the color of the additional info the inactive text color
 756     // is not used as this might lead to unreadable text for some color schemes. Instead
 757     // the text color c1 is slightly mixed with the background color.
 758     const QColor c2 = styleOption().palette.base().color();
 759     const int p1 = 70;
 760     const int p2 = 100 - p1;
 761     m_additionalInfoTextColor = QColor((c1.red()   * p1 + c2.red()   * p2) / 100,
 762                                        (c1.green() * p1 + c2.green() * p2) / 100,
 763                                        (c1.blue()  * p1 + c2.blue()  * p2) / 100);
 764 }
 765
 766 void KFileItemListWidget::drawPixmap(QPainter* painter, const QPixmap& pixmap)
 767 {
 768     const bool isHiddenItem = m_text[Name].text().startsWith(QLatin1Char('.'));
 769     qreal opacity;
 770     if (isHiddenItem) {
 771         opacity = painter->opacity();
 772         painter->setOpacity(opacity * 0.3);
 773     }
 774
 775     if (m_scaledPixmapSize != pixmap.size()) {
 776         QPixmap scaledPixmap = pixmap;
 777         KPixmapModifier::scale(scaledPixmap, m_scaledPixmapSize);
 778         painter->drawPixmap(m_pixmapPos, scaledPixmap);
 779
 780 #ifdef KFILEITEMLISTWIDGET_DEBUG
 781         painter->setPen(Qt::green);
 782         painter->drawRect(QRectF(m_pixmapPos, QSizeF(scaledPixmap.size())));
 783 #endif
 784     } else {
 785         painter->drawPixmap(m_pixmapPos, pixmap);
 786     }
 787
 788     if (isHiddenItem) {
 789         painter->setOpacity(opacity);
 790     }
 791 }
 792
 793 QPixmap KFileItemListWidget::pixmapForIcon(const QString& name, int size)
 794 {
 795     const KIcon icon(name);
 796
 797     int requestedSize;
 798     if (size <= KIconLoader::SizeSmall) {
 799         requestedSize = KIconLoader::SizeSmall;
 800     } else if (size <= KIconLoader::SizeSmallMedium) {
 801         requestedSize = KIconLoader::SizeSmallMedium;
 802     } else if (size <= KIconLoader::SizeMedium) {
 803         requestedSize = KIconLoader::SizeMedium;
 804     } else if (size <= KIconLoader::SizeLarge) {
 805         requestedSize = KIconLoader::SizeLarge;
 806     } else if (size <= KIconLoader::SizeHuge) {
 807         requestedSize = KIconLoader::SizeHuge;
 808     } else if (size <= KIconLoader::SizeEnormous) {
 809         requestedSize = KIconLoader::SizeEnormous;
 810     } else if (size <= KIconLoader::SizeEnormous * 2) {
 811         requestedSize = KIconLoader::SizeEnormous * 2;
 812     } else {
 813         requestedSize = size;
 814     }
 815
 816     QPixmap pixmap = icon.pixmap(requestedSize, requestedSize);
 817     if (requestedSize != size) {
 818         KPixmapModifier::scale(pixmap, QSize(size, size));
 819     }
 820
 821     return pixmap;
 822 }
 823
 824 KFileItemListWidget::TextId KFileItemListWidget::roleTextId(const QByteArray& role)
 825 {
 826     static QHash<QByteArray, TextId> rolesHash;
 827     if (rolesHash.isEmpty()) {
 828         rolesHash.insert("name", Name);
 829         rolesHash.insert("size", Size);
 830         rolesHash.insert("date", Date);
 831         rolesHash.insert("permissions", Permissions);
 832         rolesHash.insert("owner", Owner);
 833         rolesHash.insert("group", Group);
 834         rolesHash.insert("type", Type);
 835         rolesHash.insert("destination", Destination);
 836         rolesHash.insert("path", Path);
 837     }
 838
 839     return rolesHash.value(role);
 840 }
 841
 842 #include "kfileitemlistwidget.moc"