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