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_textBoundingRect(),
  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     painter->setPen(m_additionalInfoTextColor);
 123     painter->setFont(itemListStyleOption.font);
 124     for (int i = Name + 1; i < TextIdCount; ++i) {
 125         painter->drawStaticText(m_textPos[i], m_text[i]);
 126     }
 127
 128 #ifdef KFILEITEMLISTWIDGET_DEBUG
 129     painter->setPen(Qt::red);
 130     painter->setBrush(Qt::NoBrush);
 131     painter->drawText(QPointF(0, itemListStyleOption.fontMetrics.height()), QString::number(index()));
 132     painter->drawRect(rect());
 133 #endif
 134 }
 135
 136 QRectF KFileItemListWidget::iconBoundingRect() const
 137 {
 138     const_cast<KFileItemListWidget*>(this)->triggerCacheRefreshing();
 139
 140     QRectF bounds = m_hoverPixmapRect;
 141     const qreal margin = styleOption().margin;
 142     bounds.adjust(-margin, -margin, margin, margin);
 143     return bounds;
 144 }
 145
 146 QRectF KFileItemListWidget::textBoundingRect() const
 147 {
 148     const_cast<KFileItemListWidget*>(this)->triggerCacheRefreshing();
 149     return m_textBoundingRect;
 150 }
 151
 152 QRectF KFileItemListWidget::expansionToggleRect() const
 153 {
 154     const_cast<KFileItemListWidget*>(this)->triggerCacheRefreshing();
 155     return m_isDir ? m_expansionArea : QRectF();
 156 }
 157
 158 QString KFileItemListWidget::roleText(const QByteArray& role, const QHash<QByteArray, QVariant>& values)
 159 {
 160     QString text;
 161     const QVariant roleValue = values.value(role);
 162
 163     switch (roleTextId(role)) {
 164     case Name:
 165     case Permissions:
 166     case Owner:
 167     case Group:
 168     case Type:
 169     case Destination:
 170     case Path:
 171         text = roleValue.toString();
 172         break;
 173
 174     case Size: {
 175         if (values.value("isDir").toBool()) {
 176             // The item represents a directory. Show the number of sub directories
 177             // instead of the file size of the directory.
 178             if (!roleValue.isNull()) {
 179                 const KIO::filesize_t size = roleValue.value<KIO::filesize_t>();
 180                 text = i18ncp("@item:intable", "%1 item", "%1 items", size);
 181             }
 182         } else {
 183             const KIO::filesize_t size = roleValue.value<KIO::filesize_t>();
 184             text = KIO::convertSize(size);
 185         }
 186         break;
 187     }
 188
 189     case Date: {
 190         const QDateTime dateTime = roleValue.toDateTime();
 191         text = KGlobal::locale()->formatDateTime(dateTime);
 192         break;
 193     }
 194
 195     default:
 196         Q_ASSERT(false);
 197         break;
 198     }
 199
 200     return text;
 201 }
 202
 203 void KFileItemListWidget::invalidateCache()
 204 {
 205     m_dirtyLayout = true;
 206     m_dirtyContent = true;
 207 }
 208
 209 void KFileItemListWidget::refreshCache()
 210 {
 211 }
 212
 213 void KFileItemListWidget::setTextColor(const QColor& color)
 214 {
 215     if (color != m_customTextColor) {
 216         m_customTextColor = color;
 217         updateAdditionalInfoTextColor();
 218         update();
 219     }
 220 }
 221
 222 QColor KFileItemListWidget::textColor() const
 223 {
 224     return m_customTextColor.isValid() ? m_customTextColor : styleOption().palette.text().color();
 225 }
 226
 227 void KFileItemListWidget::setOverlay(const QPixmap& overlay)
 228 {
 229     m_overlay = overlay;
 230     m_dirtyContent = true;
 231     update();
 232 }
 233
 234 QPixmap KFileItemListWidget::overlay() const
 235 {
 236     return m_overlay;
 237 }
 238
 239 void KFileItemListWidget::dataChanged(const QHash<QByteArray, QVariant>& current,
 240                                       const QSet<QByteArray>& roles)
 241 {
 242     KItemListWidget::dataChanged(current, roles);
 243     m_dirtyContent = true;
 244
 245     QSet<QByteArray> dirtyRoles;
 246     if (roles.isEmpty()) {
 247         dirtyRoles = visibleRoles().toSet();
 248         dirtyRoles.insert("iconPixmap");
 249         dirtyRoles.insert("iconName");
 250     } else {
 251         dirtyRoles = roles;
 252     }
 253
 254     QSetIterator<QByteArray> it(dirtyRoles);
 255     while (it.hasNext()) {
 256         const QByteArray& role = it.next();
 257         m_dirtyContentRoles.insert(role);
 258     }
 259 }
 260
 261 void KFileItemListWidget::visibleRolesChanged(const QList<QByteArray>& current,
 262                                               const QList<QByteArray>& previous)
 263 {
 264     KItemListWidget::visibleRolesChanged(current, previous);
 265     m_sortedVisibleRoles = current;
 266     m_dirtyLayout = true;
 267 }
 268
 269 void KFileItemListWidget::visibleRolesSizesChanged(const QHash<QByteArray, QSizeF>& current,
 270                                                    const QHash<QByteArray, QSizeF>& previous)
 271 {
 272     KItemListWidget::visibleRolesSizesChanged(current, previous);
 273     m_dirtyLayout = true;
 274 }
 275
 276 void KFileItemListWidget::styleOptionChanged(const KItemListStyleOption& current,
 277                                              const KItemListStyleOption& previous)
 278 {
 279     KItemListWidget::styleOptionChanged(current, previous);
 280     updateAdditionalInfoTextColor();
 281     m_dirtyLayout = true;
 282 }
 283
 284 void KFileItemListWidget::hoveredChanged(bool hovered)
 285 {
 286     Q_UNUSED(hovered);
 287     m_dirtyLayout = true;
 288 }
 289
 290 void KFileItemListWidget::resizeEvent(QGraphicsSceneResizeEvent* event)
 291 {
 292     KItemListWidget::resizeEvent(event);
 293     m_dirtyLayout = true;
 294 }
 295
 296 void KFileItemListWidget::triggerCacheRefreshing()
 297 {
 298     if ((!m_dirtyContent && !m_dirtyLayout) || index() < 0) {
 299         return;
 300     }
 301
 302     refreshCache();
 303
 304     m_isDir = data()["isDir"].toBool();
 305
 306     updateExpansionArea();
 307     updateTextsCache();
 308     updatePixmapCache();
 309
 310     m_dirtyLayout = false;
 311     m_dirtyContent = false;
 312     m_dirtyContentRoles.clear();
 313 }
 314
 315 void KFileItemListWidget::updateExpansionArea()
 316 {
 317     if (m_layout == DetailsLayout) {
 318         const QHash<QByteArray, QVariant> values = data();
 319         Q_ASSERT(values.contains("expansionLevel"));
 320         const KItemListStyleOption& option = styleOption();
 321         const int expansionLevel = values.value("expansionLevel", 0).toInt();
 322
 323         const qreal widgetHeight = size().height();
 324         const qreal expansionLevelSize = KIconLoader::SizeSmall;
 325         const qreal x = option.margin + expansionLevel * widgetHeight;
 326         const qreal y = (widgetHeight - expansionLevelSize) / 2;
 327         m_expansionArea = QRectF(x, y, expansionLevelSize, expansionLevelSize);
 328     } else {
 329         m_expansionArea = QRectF();
 330     }
 331 }
 332
 333 void KFileItemListWidget::updatePixmapCache()
 334 {
 335     // Precondition: Requires already updated m_textPos values to calculate
 336     // the remaining height when the alignment is vertical.
 337
 338     const bool iconOnTop = (m_layout == IconsLayout);
 339     const KItemListStyleOption& option = styleOption();
 340     const int iconHeight = option.iconSize;
 341
 342     const QHash<QByteArray, QVariant> values = data();
 343     const QSizeF widgetSize = size();
 344
 345     int scaledIconHeight = 0;
 346     if (iconOnTop) {
 347         scaledIconHeight = static_cast<int>(m_textPos[Name].y() - 3 * option.margin);
 348     } else {
 349         const int textRowsCount = (m_layout == CompactLayout) ? visibleRoles().count() : 1;
 350         const qreal requiredTextHeight = textRowsCount * option.fontMetrics.height();
 351         scaledIconHeight = (requiredTextHeight < iconHeight) ? widgetSize.height() - 2 * option.margin : iconHeight;
 352     }
 353
 354     bool updatePixmap = (iconHeight != m_pixmap.height());
 355     if (!updatePixmap && m_dirtyContent) {
 356         updatePixmap = m_dirtyContentRoles.isEmpty()
 357                        || m_dirtyContentRoles.contains("iconPixmap")
 358                        || m_dirtyContentRoles.contains("iconName");
 359     }
 360
 361     if (updatePixmap) {
 362         m_pixmap = values["iconPixmap"].value<QPixmap>();
 363         if (m_pixmap.isNull()) {
 364             // Use the icon that fits to the MIME-type
 365             QString iconName = values["iconName"].toString();
 366             if (iconName.isEmpty()) {
 367                 // The icon-name has not been not resolved by KFileItemModelRolesUpdater,
 368                 // use a generic icon as fallback
 369                 iconName = QLatin1String("unknown");
 370             }
 371             m_pixmap = pixmapForIcon(iconName, iconHeight);
 372             m_hoverPixmapRect.setSize(m_pixmap.size());
 373         } else if (m_pixmap.size() != QSize(iconHeight, iconHeight)) {
 374             // A custom pixmap has been applied. Assure that the pixmap
 375             // is scaled to the available size.
 376             const bool scale = m_pixmap.width() > iconHeight || m_pixmap.height() > iconHeight ||
 377                                (m_pixmap.width() < iconHeight && m_pixmap.height() < iconHeight);
 378             if (scale) {
 379                 KPixmapModifier::scale(m_pixmap, QSize(iconHeight, iconHeight));
 380             }
 381             m_hoverPixmapRect.setSize(m_pixmap.size());
 382
 383             // To simplify the handling of scaling the original pixmap
 384             // will be embedded into a square pixmap.
 385             QPixmap squarePixmap(iconHeight, iconHeight);
 386             squarePixmap.fill(Qt::transparent);
 387
 388             QPainter painter(&squarePixmap);
 389             if (iconOnTop) {
 390                 const int x = (iconHeight - m_pixmap.width()) / 2;  // Center horizontally
 391                 const int y = iconHeight - m_pixmap.height();       // Align on bottom
 392                 painter.drawPixmap(x, y, m_pixmap);
 393             } else {
 394                 const int x = iconHeight - m_pixmap.width();        // Align right
 395                 const int y = (iconHeight - m_pixmap.height()) / 2; // Center vertically
 396                 painter.drawPixmap(x, y, m_pixmap);
 397             }
 398
 399             m_pixmap = squarePixmap;
 400         } else {
 401             m_hoverPixmapRect.setSize(m_pixmap.size());
 402         }
 403
 404         Q_ASSERT(m_pixmap.height() == iconHeight);
 405     }
 406     if (!m_overlay.isNull()) {
 407         QPainter painter(&m_pixmap);
 408         painter.drawPixmap(0, m_pixmap.height() - m_overlay.height(), m_overlay);
 409     }
 410
 411     m_scaledPixmapSize = QSize(scaledIconHeight, scaledIconHeight);
 412
 413     if (iconOnTop) {
 414         m_pixmapPos.setX((widgetSize.width() - m_scaledPixmapSize.width()) / 2);
 415     } else {
 416         m_pixmapPos.setX(m_textPos[Name].x() - 2 * option.margin - scaledIconHeight);
 417     }
 418     m_pixmapPos.setY(option.margin);
 419
 420     // Center the hover rectangle horizontally and align it on bottom
 421     const qreal x = m_pixmapPos.x() + (m_scaledPixmapSize.width() - m_hoverPixmapRect.width()) / 2.0;
 422     const qreal y = m_pixmapPos.y() + m_scaledPixmapSize.height() - m_hoverPixmapRect.height();
 423     m_hoverPixmapRect.moveTopLeft(QPointF(x, y));
 424
 425     // Prepare the pixmap that is used when the item gets hovered
 426     if (isHovered()) {
 427         m_hoverPixmap = m_pixmap;
 428         KIconEffect* effect = KIconLoader::global()->iconEffect();
 429         // In the KIconLoader terminology, active = hover.
 430         if (effect->hasEffect(KIconLoader::Desktop, KIconLoader::ActiveState)) {
 431             m_hoverPixmap =  effect->apply(m_pixmap, KIconLoader::Desktop, KIconLoader::ActiveState);
 432         } else {
 433             m_hoverPixmap = m_pixmap;
 434         }
 435     } else if (hoverOpacity() <= 0.0) {
 436         // No hover animation is ongoing. Clear m_hoverPixmap to save memory.
 437         m_hoverPixmap = QPixmap();
 438     }
 439 }
 440
 441 void KFileItemListWidget::updateTextsCache()
 442 {
 443     QTextOption textOption;
 444     switch (m_layout) {
 445     case IconsLayout:
 446         textOption.setWrapMode(QTextOption::WrapAtWordBoundaryOrAnywhere);
 447         textOption.setAlignment(Qt::AlignHCenter);
 448         break;
 449     case CompactLayout:
 450     case DetailsLayout:
 451         textOption.setAlignment(Qt::AlignLeft);
 452         textOption.setWrapMode(QTextOption::NoWrap);
 453         break;
 454     default:
 455         Q_ASSERT(false);
 456         break;
 457     }
 458
 459     for (int i = 0; i < TextIdCount; ++i) {
 460         m_text[i].setText(QString());
 461         m_text[i].setTextOption(textOption);
 462     }
 463
 464     switch (m_layout) {
 465     case IconsLayout:   updateIconsLayoutTextCache(); break;
 466     case CompactLayout: updateCompactLayoutTextCache(); break;
 467     case DetailsLayout: updateDetailsLayoutTextCache(); break;
 468     default: Q_ASSERT(false); break;
 469     }
 470 }
 471
 472 void KFileItemListWidget::updateIconsLayoutTextCache()
 473 {
 474     //      +------+
 475     //      | Icon |
 476     //      +------+
 477     //
 478     //    Name role that
 479     // might get wrapped above
 480     //    several lines.
 481     //  Additional role 1
 482     //  Additional role 2
 483
 484     const QHash<QByteArray, QVariant> values = data();
 485
 486     const KItemListStyleOption& option = styleOption();
 487     const qreal maxWidth = size().width() - 2 * option.margin;
 488     const qreal widgetHeight = size().height();
 489     const qreal fontHeight = option.fontMetrics.height();
 490
 491     // Initialize properties for the "name" role. It will be used as anchor
 492     // for initializing the position of the other roles.
 493     m_text[Name].setText(KStringHandler::preProcessWrap(values["name"].toString()));
 494
 495     // Calculate the number of lines required for the name and the required width
 496     int textLinesCountForName = 0;
 497     qreal requiredWidthForName = 0;
 498     QTextLine line;
 499
 500     QTextLayout layout(m_text[Name].text(), option.font);
 501     layout.setTextOption(m_text[Name].textOption());
 502     layout.beginLayout();
 503     while ((line = layout.createLine()).isValid()) {
 504         line.setLineWidth(maxWidth);
 505         requiredWidthForName = qMax(requiredWidthForName, line.naturalTextWidth());
 506         ++textLinesCountForName;
 507     }
 508     layout.endLayout();
 509
 510     // Use one line for each additional information
 511     int textLinesCount = textLinesCountForName;
 512     const int additionalRolesCount = qMax(visibleRoles().count() - 1, 0);
 513     textLinesCount += additionalRolesCount;
 514
 515     m_text[Name].setTextWidth(maxWidth);
 516     m_textPos[Name] = QPointF(option.margin, widgetHeight - textLinesCount * fontHeight - option.margin);
 517     m_textBoundingRect = QRectF(option.margin + (maxWidth - requiredWidthForName) / 2,
 518                                  m_textPos[Name].y(),
 519                                  requiredWidthForName,
 520                                  m_text[Name].size().height());
 521
 522     // Calculate the position for each additional information
 523     qreal y = m_textPos[Name].y() + textLinesCountForName * fontHeight;
 524     foreach (const QByteArray& role, m_sortedVisibleRoles) {
 525         const TextId textId = roleTextId(role);
 526         if (textId == Name) {
 527             continue;
 528         }
 529
 530         const QString text = roleText(role, values);
 531         m_text[textId].setText(text);
 532
 533         qreal requiredWidth = 0;
 534
 535         QTextLayout layout(text, option.font);
 536         layout.setTextOption(m_text[textId].textOption());
 537         layout.beginLayout();
 538         QTextLine textLine = layout.createLine();
 539         if (textLine.isValid()) {
 540             textLine.setLineWidth(maxWidth);
 541             requiredWidth = textLine.naturalTextWidth();
 542             if (textLine.textLength() < text.length()) {
 543                 // TODO: QFontMetrics::elidedText() works different regarding the given width
 544                 // in comparison to QTextLine::setLineWidth(). It might happen that the text does
 545                 // not get elided although it does not fit into the given width. As workaround
 546                 // the margin is substracted.
 547                 const QString elidedText = option.fontMetrics.elidedText(text, Qt::ElideRight, maxWidth - option.margin);
 548                 m_text[textId].setText(elidedText);
 549             }
 550         }
 551         layout.endLayout();
 552
 553         m_textPos[textId] = QPointF(option.margin, y);
 554         m_text[textId].setTextWidth(maxWidth);
 555
 556         const QRectF textBoundingRect(option.margin + (maxWidth - requiredWidth) / 2, y, requiredWidth, fontHeight);
 557         m_textBoundingRect |= textBoundingRect;
 558
 559         y += fontHeight;
 560     }
 561
 562     // Add a margin to the text bounding rectangle
 563     const qreal margin = option.margin;
 564     m_textBoundingRect.adjust(-margin, -margin, margin, margin);
 565 }
 566
 567 void KFileItemListWidget::updateCompactLayoutTextCache()
 568 {
 569     // +------+  Name role
 570     // | Icon |  Additional role 1
 571     // +------+  Additional role 2
 572
 573     const QHash<QByteArray, QVariant> values = data();
 574
 575     const KItemListStyleOption& option = styleOption();
 576     const qreal widgetHeight = size().height();
 577     const qreal fontHeight = option.fontMetrics.height();
 578     const qreal textLinesHeight = qMax(visibleRoles().count(), 1) * fontHeight;
 579     const int scaledIconSize = (textLinesHeight < option.iconSize) ? widgetHeight - 2 * option.margin : option.iconSize;
 580
 581     qreal maximumRequiredTextWidth = 0;
 582     const qreal x = option.margin * 3 + scaledIconSize;
 583     qreal y = (widgetHeight - textLinesHeight) / 2;
 584     const qreal maxWidth = size().width() - x - option.margin;
 585     foreach (const QByteArray& role, m_sortedVisibleRoles) {
 586         const TextId textId = roleTextId(role);
 587
 588         const QString text = roleText(role, values);
 589         m_text[textId].setText(text);
 590
 591         qreal requiredWidth = option.fontMetrics.width(text);
 592         if (requiredWidth > maxWidth) {
 593             requiredWidth = maxWidth;
 594             const QString elidedText = option.fontMetrics.elidedText(text, Qt::ElideRight, maxWidth);
 595             m_text[textId].setText(elidedText);
 596         }
 597
 598         m_textPos[textId] = QPointF(x, y);
 599         m_text[textId].setTextWidth(maxWidth);
 600
 601         maximumRequiredTextWidth = qMax(maximumRequiredTextWidth, requiredWidth);
 602
 603         y += fontHeight;
 604     }
 605
 606     m_textBoundingRect = QRectF(x - option.margin, 0, maximumRequiredTextWidth + 2 * option.margin, widgetHeight);
 607 }
 608
 609 void KFileItemListWidget::updateDetailsLayoutTextCache()
 610 {
 611     // Precondition: Requires already updated m_expansionArea
 612     // to determine the left position.
 613
 614     // +------+
 615     // | Icon |  Name role   Additional role 1   Additional role 2
 616     // +------+
 617     m_textBoundingRect = QRectF();
 618
 619     const KItemListStyleOption& option = styleOption();
 620     const QHash<QByteArray, QVariant> values = data();
 621
 622     const qreal widgetHeight = size().height();
 623     const int scaledIconSize = widgetHeight - 2 * option.margin;
 624     const int fontHeight = option.fontMetrics.height();
 625
 626     const qreal columnMargin = option.margin * 3;
 627     const qreal firstColumnInc = m_expansionArea.right() + option.margin * 2 + scaledIconSize;
 628     qreal x = firstColumnInc;
 629     const qreal y = qMax(qreal(option.margin), (widgetHeight - fontHeight) / 2);
 630
 631     foreach (const QByteArray& role, m_sortedVisibleRoles) {
 632         const TextId textId = roleTextId(role);
 633
 634         const QString text = roleText(role, values);
 635         m_text[textId].setText(text);
 636
 637         const qreal requiredWidth = option.fontMetrics.width(text);
 638         m_textPos[textId] = QPointF(x + columnMargin, y);
 639
 640         const qreal columnWidth = visibleRolesSizes().value(role, QSizeF(0, 0)).width();
 641         x += columnWidth;
 642
 643         switch (textId) {
 644         case Name: {
 645             m_textBoundingRect = QRectF(m_textPos[textId].x() - option.margin, 0,
 646                                         requiredWidth + 2 * option.margin, size().height());
 647
 648             // The column after the name should always be aligned on the same x-position independent
 649             // from the expansion-level shown in the name column
 650             x -= firstColumnInc;
 651             break;
 652         }
 653         case Size:
 654             // The values for the size should be right aligned
 655             m_textPos[textId].rx() += columnWidth - requiredWidth - 2 * columnMargin;
 656             break;
 657
 658         default:
 659             break;
 660         }
 661     }
 662 }
 663
 664 void KFileItemListWidget::updateAdditionalInfoTextColor()
 665 {
 666     // For the color of the additional info the inactive text color
 667     // is not used as this might lead to unreadable text for some color schemes. Instead
 668     // the text color is slightly mixed with the background color.
 669     const QColor c1 = textColor();
 670     const QColor c2 = styleOption().palette.background().color();
 671     const int p1 = 70;
 672     const int p2 = 100 - p1;
 673     m_additionalInfoTextColor = QColor((c1.red()   * p1 + c2.red()   * p2) / 100,
 674                                        (c1.green() * p1 + c2.green() * p2) / 100,
 675                                        (c1.blue()  * p1 + c2.blue()  * p2) / 100);
 676 }
 677
 678 void KFileItemListWidget::drawPixmap(QPainter* painter, const QPixmap& pixmap)
 679 {
 680     const bool isHiddenItem = m_text[Name].text().startsWith(QLatin1Char('.'));
 681     qreal opacity;
 682     if (isHiddenItem) {
 683         opacity = painter->opacity();
 684         painter->setOpacity(opacity * 0.3);
 685     }
 686
 687     if (m_scaledPixmapSize != pixmap.size()) {
 688         QPixmap scaledPixmap = pixmap;
 689         KPixmapModifier::scale(scaledPixmap, m_scaledPixmapSize);
 690         painter->drawPixmap(m_pixmapPos, scaledPixmap);
 691
 692 #ifdef KFILEITEMLISTWIDGET_DEBUG
 693         painter->setPen(Qt::green);
 694         painter->drawRect(QRectF(m_pixmapPos, QSizeF(scaledPixmap.size())));
 695 #endif
 696     } else {
 697         painter->drawPixmap(m_pixmapPos, pixmap);
 698     }
 699
 700     if (isHiddenItem) {
 701         painter->setOpacity(opacity);
 702     }
 703 }
 704
 705 QPixmap KFileItemListWidget::pixmapForIcon(const QString& name, int size)
 706 {
 707     const KIcon icon(name);
 708
 709     int requestedSize;
 710     if (size <= KIconLoader::SizeSmall) {
 711         requestedSize = KIconLoader::SizeSmall;
 712     } else if (size <= KIconLoader::SizeSmallMedium) {
 713         requestedSize = KIconLoader::SizeSmallMedium;
 714     } else if (size <= KIconLoader::SizeMedium) {
 715         requestedSize = KIconLoader::SizeMedium;
 716     } else if (size <= KIconLoader::SizeLarge) {
 717         requestedSize = KIconLoader::SizeLarge;
 718     } else if (size <= KIconLoader::SizeHuge) {
 719         requestedSize = KIconLoader::SizeHuge;
 720     } else if (size <= KIconLoader::SizeEnormous) {
 721         requestedSize = KIconLoader::SizeEnormous;
 722     } else if (size <= KIconLoader::SizeEnormous * 2) {
 723         requestedSize = KIconLoader::SizeEnormous * 2;
 724     } else {
 725         requestedSize = size;
 726     }
 727
 728     QPixmap pixmap = icon.pixmap(requestedSize, requestedSize);
 729     if (requestedSize != size) {
 730         KPixmapModifier::scale(pixmap, QSize(size, size));
 731     }
 732
 733     return pixmap;
 734 }
 735
 736 KFileItemListWidget::TextId KFileItemListWidget::roleTextId(const QByteArray& role)
 737 {
 738     static QHash<QByteArray, TextId> rolesHash;
 739     if (rolesHash.isEmpty()) {
 740         rolesHash.insert("name", Name);
 741         rolesHash.insert("size", Size);
 742         rolesHash.insert("date", Date);
 743         rolesHash.insert("permissions", Permissions);
 744         rolesHash.insert("owner", Owner);
 745         rolesHash.insert("group", Group);
 746         rolesHash.insert("type", Type);
 747         rolesHash.insert("destination", Destination);
 748         rolesHash.insert("path", Path);
 749     }
 750
 751     return rolesHash.value(role);
 752 }
 753
 754 #include "kfileitemlistwidget.moc"