src/kitemviews/kstandarditemlistwidget.cpp

   1 /***************************************************************************
   2  *   Copyright (C) 2012 by Peter Penz <peter.penz19@gmail.com>             *
   3  *                                                                         *
   4  *   This program is free software; you can redistribute it and/or modify  *
   5  *   it under the terms of the GNU General Public License as published by  *
   6  *   the Free Software Foundation; either version 2 of the License, or     *
   7  *   (at your option) any later version.                                   *
   8  *                                                                         *
   9  *   This program is distributed in the hope that it will be useful,       *
  10  *   but WITHOUT ANY WARRANTY; without even the implied warranty of        *
  11  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the         *
  12  *   GNU General Public License for more details.                          *
  13  *                                                                         *
  14  *   You should have received a copy of the GNU General Public License     *
  15  *   along with this program; if not, write to the                         *
  16  *   Free Software Foundation, Inc.,                                       *
  17  *   51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA            *
  18  ***************************************************************************/
  19
  20 #include "kstandarditemlistwidget.h"
  21
  22 #include "kfileitemlistview.h"
  23 #include "kfileitemmodel.h"
  24
  25 #include <KIcon>
  26 #include <KIconEffect>
  27 #include <KIconLoader>
  28 #include <KLocale>
  29 #include <kratingpainter.h>
  30 #include <KStringHandler>
  31 #include <KDebug>
  32
  33 #include "private/kfileitemclipboard.h"
  34 #include "private/kitemlistroleeditor.h"
  35 #include "private/kpixmapmodifier.h"
  36
  37 #include <QFontMetricsF>
  38 #include <QGraphicsScene>
  39 #include <QGraphicsSceneResizeEvent>
  40 #include <QGraphicsView>
  41 #include <QPainter>
  42 #include <QStyleOption>
  43 #include <QTextLayout>
  44 #include <QTextLine>
  45 #include <QPixmapCache>
  46
  47 // #define KSTANDARDITEMLISTWIDGET_DEBUG
  48
  49 KStandardItemListWidgetInformant::KStandardItemListWidgetInformant() :
  50     KItemListWidgetInformant()
  51 {
  52 }
  53
  54 KStandardItemListWidgetInformant::~KStandardItemListWidgetInformant()
  55 {
  56 }
  57
  58 void KStandardItemListWidgetInformant::calculateItemSizeHints(QVector<QSizeF>& sizeHints, const KItemListView* view) const
  59 {
  60     switch (static_cast<const KStandardItemListView*>(view)->itemLayout()) {
  61     case KStandardItemListWidget::IconsLayout:
  62         calculateIconsLayoutItemSizeHints(sizeHints, view);
  63         break;
  64
  65     case KStandardItemListWidget::CompactLayout:
  66         calculateCompactLayoutItemSizeHints(sizeHints, view);
  67         break;
  68
  69     case KStandardItemListWidget::DetailsLayout:
  70         calculateDetailsLayoutItemSizeHints(sizeHints, view);
  71         break;
  72
  73     default:
  74         Q_ASSERT(false);
  75         break;
  76     }
  77 }
  78
  79 qreal KStandardItemListWidgetInformant::preferredRoleColumnWidth(const QByteArray& role,
  80                                                                  int index,
  81                                                                  const KItemListView* view) const
  82 {
  83     const QHash<QByteArray, QVariant> values = view->model()->data(index);
  84     const KItemListStyleOption& option = view->styleOption();
  85
  86     const QString text = roleText(role, values);
  87     qreal width = KStandardItemListWidget::columnPadding(option);
  88
  89     if (role == "rating") {
  90         width += KStandardItemListWidget::preferredRatingSize(option).width();
  91     } else {
  92         width += option.fontMetrics.width(text);
  93
  94         if (role == "text") {
  95             if (view->supportsItemExpanding()) {
  96                 // Increase the width by the expansion-toggle and the current expansion level
  97                 const int expandedParentsCount = values.value("expandedParentsCount", 0).toInt();
  98                 const qreal height = option.padding * 2 + qMax(option.iconSize, option.fontMetrics.height());
  99                 width += (expandedParentsCount + 1) * height;
 100             }
 101
 102             // Increase the width by the required space for the icon
 103             width += option.padding * 2 + option.iconSize;
 104         }
 105     }
 106
 107     return width;
 108 }
 109
 110 QString KStandardItemListWidgetInformant::itemText(int index, const KItemListView* view) const
 111 {
 112     return view->model()->data(index).value("text").toString();
 113 }
 114
 115 QString KStandardItemListWidgetInformant::roleText(const QByteArray& role,
 116                                                    const QHash<QByteArray, QVariant>& values) const
 117 {
 118     if (role == "rating") {
 119         // Always use an empty text, as the rating is shown by the image m_rating.
 120         return QString();
 121     }
 122     return values.value(role).toString();
 123 }
 124
 125 void KStandardItemListWidgetInformant::calculateIconsLayoutItemSizeHints(QVector<QSizeF>& sizeHints, const KItemListView* view) const
 126 {
 127     const KItemListStyleOption& option = view->styleOption();
 128     const QFont& font = option.font;
 129     const int additionalRolesCount = qMax(view->visibleRoles().count() - 1, 0);
 130
 131     const qreal itemWidth = view->itemSize().width();
 132     const qreal maxWidth = itemWidth - 2 * option.padding;
 133     const qreal maxTextHeight = option.maxTextSize.height();
 134     const qreal additionalRolesSpacing = additionalRolesCount * option.fontMetrics.lineSpacing();
 135     const qreal spacingAndIconHeight = option.iconSize + option.padding * 3;
 136
 137     QTextOption textOption(Qt::AlignHCenter);
 138     textOption.setWrapMode(QTextOption::WrapAtWordBoundaryOrAnywhere);
 139
 140     for (int index = 0; index < sizeHints.count(); ++index) {
 141         if (!sizeHints.at(index).isEmpty()) {
 142             continue;
 143         }
 144
 145         const QString& text = KStringHandler::preProcessWrap(itemText(index, view));
 146
 147         // Calculate the number of lines required for wrapping the name
 148         qreal textHeight = 0;
 149         QTextLayout layout(text, font);
 150         layout.setTextOption(textOption);
 151         layout.beginLayout();
 152         QTextLine line;
 153         while ((line = layout.createLine()).isValid()) {
 154             line.setLineWidth(maxWidth);
 155             line.naturalTextWidth();
 156             textHeight += line.height();
 157         }
 158         layout.endLayout();
 159
 160         // Add one line for each additional information
 161         textHeight += additionalRolesSpacing;
 162
 163         if (maxTextHeight > 0 && textHeight > maxTextHeight) {
 164             textHeight = maxTextHeight;
 165         }
 166
 167         sizeHints[index] = QSizeF(itemWidth, textHeight + spacingAndIconHeight);
 168     }
 169 }
 170
 171 void KStandardItemListWidgetInformant::calculateCompactLayoutItemSizeHints(QVector<QSizeF>& sizeHints, const KItemListView* view) const
 172 {
 173     const KItemListStyleOption& option = view->styleOption();
 174     const QFontMetrics& fontMetrics = option.fontMetrics;
 175     const int additionalRolesCount = qMax(view->visibleRoles().count() - 1, 0);
 176
 177     const QList<QByteArray>& visibleRoles = view->visibleRoles();
 178     const bool showOnlyTextRole = (visibleRoles.count() == 1) && (visibleRoles.first() == "text");
 179     const qreal maxWidth = option.maxTextSize.width();
 180     const qreal paddingAndIconWidth = option.padding * 4 + option.iconSize;
 181     const qreal height = option.padding * 2 + qMax(option.iconSize, (1 + additionalRolesCount) * option.fontMetrics.lineSpacing());
 182
 183     for (int index = 0; index < sizeHints.count(); ++index) {
 184         if (!sizeHints.at(index).isEmpty()) {
 185             continue;
 186         }
 187
 188         // For each row exactly one role is shown. Calculate the maximum required width that is necessary
 189         // to show all roles without horizontal clipping.
 190         qreal maximumRequiredWidth = 0.0;
 191
 192         if (showOnlyTextRole) {
 193             maximumRequiredWidth = fontMetrics.width(itemText(index, view));
 194         } else {
 195             const QHash<QByteArray, QVariant>& values = view->model()->data(index);
 196             foreach (const QByteArray& role, visibleRoles) {
 197                 const QString& text = roleText(role, values);
 198                 const qreal requiredWidth = fontMetrics.width(text);
 199                 maximumRequiredWidth = qMax(maximumRequiredWidth, requiredWidth);
 200             }
 201         }
 202
 203         qreal width = paddingAndIconWidth + maximumRequiredWidth;
 204         if (maxWidth > 0 && width > maxWidth) {
 205             width = maxWidth;
 206         }
 207
 208         sizeHints[index] = QSizeF(width, height);
 209     }
 210 }
 211
 212 void KStandardItemListWidgetInformant::calculateDetailsLayoutItemSizeHints(QVector<QSizeF>& sizeHints, const KItemListView* view) const
 213 {
 214     const KItemListStyleOption& option = view->styleOption();
 215     const qreal height = option.padding * 2 + qMax(option.iconSize, option.fontMetrics.height());
 216
 217     for (int index = 0; index < sizeHints.count(); ++index) {
 218         if (!sizeHints.at(index).isEmpty()) {
 219             continue;
 220         }
 221
 222         sizeHints[index] = QSizeF(-1, height);
 223     }
 224 }
 225
 226 KStandardItemListWidget::KStandardItemListWidget(KItemListWidgetInformant* informant, QGraphicsItem* parent) :
 227     KItemListWidget(informant, parent),
 228     m_isCut(false),
 229     m_isHidden(false),
 230     m_customizedFont(),
 231     m_customizedFontMetrics(m_customizedFont),
 232     m_isExpandable(false),
 233     m_supportsItemExpanding(false),
 234     m_dirtyLayout(true),
 235     m_dirtyContent(true),
 236     m_dirtyContentRoles(),
 237     m_layout(IconsLayout),
 238     m_pixmapPos(),
 239     m_pixmap(),
 240     m_scaledPixmapSize(),
 241     m_iconRect(),
 242     m_hoverPixmap(),
 243     m_textInfo(),
 244     m_textRect(),
 245     m_sortedVisibleRoles(),
 246     m_expansionArea(),
 247     m_customTextColor(),
 248     m_additionalInfoTextColor(),
 249     m_overlay(),
 250     m_rating(),
 251     m_roleEditor(0),
 252     m_oldRoleEditor(0)
 253 {
 254 }
 255
 256 KStandardItemListWidget::~KStandardItemListWidget()
 257 {
 258     qDeleteAll(m_textInfo);
 259     m_textInfo.clear();
 260
 261     if (m_roleEditor) {
 262         m_roleEditor->deleteLater();
 263     }
 264
 265     if (m_oldRoleEditor) {
 266         m_oldRoleEditor->deleteLater();
 267     }
 268 }
 269
 270 void KStandardItemListWidget::setLayout(Layout layout)
 271 {
 272     if (m_layout != layout) {
 273         m_layout = layout;
 274         m_dirtyLayout = true;
 275         updateAdditionalInfoTextColor();
 276         update();
 277     }
 278 }
 279
 280 KStandardItemListWidget::Layout KStandardItemListWidget::layout() const
 281 {
 282     return m_layout;
 283 }
 284
 285 void KStandardItemListWidget::setSupportsItemExpanding(bool supportsItemExpanding)
 286 {
 287     if (m_supportsItemExpanding != supportsItemExpanding) {
 288         m_supportsItemExpanding = supportsItemExpanding;
 289         m_dirtyLayout = true;
 290         update();
 291     }
 292 }
 293
 294 bool KStandardItemListWidget::supportsItemExpanding() const
 295 {
 296     return m_supportsItemExpanding;
 297 }
 298
 299 void KStandardItemListWidget::paint(QPainter* painter, const QStyleOptionGraphicsItem* option, QWidget* widget)
 300 {
 301     const_cast<KStandardItemListWidget*>(this)->triggerCacheRefreshing();
 302
 303     KItemListWidget::paint(painter, option, widget);
 304
 305     if (!m_expansionArea.isEmpty()) {
 306         drawSiblingsInformation(painter);
 307     }
 308
 309     const KItemListStyleOption& itemListStyleOption = styleOption();
 310     if (isHovered()) {
 311         if (hoverOpacity() < 1.0) {
 312             /*
 313              * Linear interpolation between m_pixmap and m_hoverPixmap.
 314              *
 315              * Note that this cannot be achieved by painting m_hoverPixmap over
 316              * m_pixmap, even if the opacities are adjusted. For details see
 317              * https://git.reviewboard.kde.org/r/109614/
 318              */
 319             // Paint pixmap1 so that pixmap1 = m_pixmap * (1.0 - hoverOpacity())
 320             QPixmap pixmap1(m_pixmap.size());
 321             pixmap1.fill(Qt::transparent);
 322             {
 323                 QPainter p(&pixmap1);
 324                 p.setOpacity(1.0 - hoverOpacity());
 325                 p.drawPixmap(0, 0, m_pixmap);
 326             }
 327
 328             // Paint pixmap2 so that pixmap2 = m_hoverPixmap * hoverOpacity()
 329             QPixmap pixmap2(pixmap1.size());
 330             pixmap2.fill(Qt::transparent);
 331             {
 332                 QPainter p(&pixmap2);
 333                 p.setOpacity(hoverOpacity());
 334                 p.drawPixmap(0, 0, m_hoverPixmap);
 335             }
 336
 337             // Paint pixmap2 on pixmap1 using CompositionMode_Plus
 338             // Now pixmap1 = pixmap2 + m_pixmap * (1.0 - hoverOpacity())
 339             //             = m_hoverPixmap * hoverOpacity() + m_pixmap * (1.0 - hoverOpacity())
 340             {
 341                 QPainter p(&pixmap1);
 342                 p.setCompositionMode(QPainter::CompositionMode_Plus);
 343                 p.drawPixmap(0, 0, pixmap2);
 344             }
 345
 346             // Finally paint pixmap1 on the widget
 347             drawPixmap(painter, pixmap1);
 348         } else {
 349             drawPixmap(painter, m_hoverPixmap);
 350         }
 351     } else {
 352         drawPixmap(painter, m_pixmap);
 353     }
 354
 355     painter->setFont(m_customizedFont);
 356     painter->setPen(textColor());
 357     const TextInfo* textInfo = m_textInfo.value("text");
 358
 359     if (!textInfo) {
 360         // It seems that we can end up here even if m_textInfo does not contain
 361         // the key "text", see bug 306167. According to triggerCacheRefreshing(),
 362         // this can only happen if the index is negative. This can happen when
 363         // the item is about to be removed, see KItemListView::slotItemsRemoved().
 364         // TODO: try to reproduce the crash and find a better fix.
 365         return;
 366     }
 367
 368     painter->drawStaticText(textInfo->pos, textInfo->staticText);
 369
 370     bool clipAdditionalInfoBounds = false;
 371     if (m_supportsItemExpanding) {
 372         // Prevent a possible overlapping of the additional-information texts
 373         // with the icon. This can happen if the user has minimized the width
 374         // of the name-column to a very small value.
 375         const qreal minX = m_pixmapPos.x() + m_pixmap.width() + 4 * itemListStyleOption.padding;
 376         if (textInfo->pos.x() + columnWidth("text") > minX) {
 377             clipAdditionalInfoBounds = true;
 378             painter->save();
 379             painter->setClipRect(minX, 0, size().width() - minX, size().height(), Qt::IntersectClip);
 380         }
 381     }
 382
 383     painter->setPen(m_additionalInfoTextColor);
 384     painter->setFont(m_customizedFont);
 385
 386     for (int i = 1; i < m_sortedVisibleRoles.count(); ++i) {
 387         const TextInfo* textInfo = m_textInfo.value(m_sortedVisibleRoles[i]);
 388         painter->drawStaticText(textInfo->pos, textInfo->staticText);
 389     }
 390
 391     if (!m_rating.isNull()) {
 392         const TextInfo* ratingTextInfo = m_textInfo.value("rating");
 393         QPointF pos = ratingTextInfo->pos;
 394         const Qt::Alignment align = ratingTextInfo->staticText.textOption().alignment();
 395         if (align & Qt::AlignHCenter) {
 396             pos.rx() += (size().width() - m_rating.width()) / 2 - 2;
 397         }
 398         painter->drawPixmap(pos, m_rating);
 399     }
 400
 401     if (clipAdditionalInfoBounds) {
 402         painter->restore();
 403     }
 404
 405 #ifdef KSTANDARDITEMLISTWIDGET_DEBUG
 406     painter->setBrush(Qt::NoBrush);
 407     painter->setPen(Qt::green);
 408     painter->drawRect(m_iconRect);
 409
 410     painter->setPen(Qt::blue);
 411     painter->drawRect(m_textRect);
 412
 413     painter->setPen(Qt::red);
 414     painter->drawText(QPointF(0, m_customizedFontMetrics.height()), QString::number(index()));
 415     painter->drawRect(rect());
 416 #endif
 417 }
 418
 419 QRectF KStandardItemListWidget::iconRect() const
 420 {
 421     const_cast<KStandardItemListWidget*>(this)->triggerCacheRefreshing();
 422     return m_iconRect;
 423 }
 424
 425 QRectF KStandardItemListWidget::textRect() const
 426 {
 427     const_cast<KStandardItemListWidget*>(this)->triggerCacheRefreshing();
 428     return m_textRect;
 429 }
 430
 431 QRectF KStandardItemListWidget::textFocusRect() const
 432 {
 433     // In the compact- and details-layout a larger textRect() is returned to be aligned
 434     // with the iconRect(). This is useful to have a larger selection/hover-area
 435     // when having a quite large icon size but only one line of text. Still the
 436     // focus rectangle should be shown as narrow as possible around the text.
 437
 438     const_cast<KStandardItemListWidget*>(this)->triggerCacheRefreshing();
 439
 440     switch (m_layout) {
 441     case CompactLayout: {
 442         QRectF rect = m_textRect;
 443         const TextInfo* topText    = m_textInfo.value(m_sortedVisibleRoles.first());
 444         const TextInfo* bottomText = m_textInfo.value(m_sortedVisibleRoles.last());
 445         rect.setTop(topText->pos.y());
 446         rect.setBottom(bottomText->pos.y() + bottomText->staticText.size().height());
 447         return rect;
 448     }
 449
 450     case DetailsLayout: {
 451         QRectF rect = m_textRect;
 452         const TextInfo* textInfo = m_textInfo.value(m_sortedVisibleRoles.first());
 453         rect.setTop(textInfo->pos.y());
 454         rect.setBottom(textInfo->pos.y() + textInfo->staticText.size().height());
 455
 456         const KItemListStyleOption& option = styleOption();
 457         if (option.extendedSelectionRegion) {
 458             const QString text = textInfo->staticText.text();
 459             rect.setWidth(m_customizedFontMetrics.width(text) + 2 * option.padding);
 460         }
 461
 462         return rect;
 463     }
 464
 465     default:
 466         break;
 467     }
 468
 469     return m_textRect;
 470 }
 471
 472 QRectF KStandardItemListWidget::expansionToggleRect() const
 473 {
 474     const_cast<KStandardItemListWidget*>(this)->triggerCacheRefreshing();
 475     return m_isExpandable ? m_expansionArea : QRectF();
 476 }
 477
 478 QRectF KStandardItemListWidget::selectionToggleRect() const
 479 {
 480     const_cast<KStandardItemListWidget*>(this)->triggerCacheRefreshing();
 481
 482     const int iconHeight = styleOption().iconSize;
 483
 484     int toggleSize = KIconLoader::SizeSmall;
 485     if (iconHeight >= KIconLoader::SizeEnormous) {
 486         toggleSize = KIconLoader::SizeMedium;
 487     } else if (iconHeight >= KIconLoader::SizeLarge) {
 488         toggleSize = KIconLoader::SizeSmallMedium;
 489     }
 490
 491     QPointF pos = iconRect().topLeft();
 492
 493     // If the selection toggle has a very small distance to the
 494     // widget borders, the size of the selection toggle will get
 495     // increased to prevent an accidental clicking of the item
 496     // when trying to hit the toggle.
 497     const int widgetHeight = size().height();
 498     const int widgetWidth = size().width();
 499     const int minMargin = 2;
 500
 501     if (toggleSize + minMargin * 2 >= widgetHeight) {
 502         pos.rx() -= (widgetHeight - toggleSize) / 2;
 503         toggleSize = widgetHeight;
 504         pos.setY(0);
 505     }
 506     if (toggleSize + minMargin * 2 >= widgetWidth) {
 507         pos.ry() -= (widgetWidth - toggleSize) / 2;
 508         toggleSize = widgetWidth;
 509         pos.setX(0);
 510     }
 511
 512     return QRectF(pos, QSizeF(toggleSize, toggleSize));
 513 }
 514
 515 QPixmap KStandardItemListWidget::createDragPixmap(const QStyleOptionGraphicsItem* option,
 516                                                   QWidget* widget)
 517 {
 518     QPixmap pixmap = KItemListWidget::createDragPixmap(option, widget);
 519     if (m_layout != DetailsLayout) {
 520         return pixmap;
 521     }
 522
 523     // Only return the content of the text-column as pixmap
 524     const int leftClip = m_pixmapPos.x();
 525
 526     const TextInfo* textInfo = m_textInfo.value("text");
 527     const int rightClip = textInfo->pos.x() +
 528                           textInfo->staticText.size().width() +
 529                           2 * styleOption().padding;
 530
 531     QPixmap clippedPixmap(rightClip - leftClip + 1, pixmap.height());
 532     clippedPixmap.fill(Qt::transparent);
 533
 534     QPainter painter(&clippedPixmap);
 535     painter.drawPixmap(-leftClip, 0, pixmap);
 536
 537     return clippedPixmap;
 538 }
 539
 540
 541 KItemListWidgetInformant* KStandardItemListWidget::createInformant()
 542 {
 543     return new KStandardItemListWidgetInformant();
 544 }
 545
 546 void KStandardItemListWidget::invalidateCache()
 547 {
 548     m_dirtyLayout = true;
 549     m_dirtyContent = true;
 550 }
 551
 552 void KStandardItemListWidget::refreshCache()
 553 {
 554 }
 555
 556 bool KStandardItemListWidget::isRoleRightAligned(const QByteArray& role) const
 557 {
 558     Q_UNUSED(role);
 559     return false;
 560 }
 561
 562 bool KStandardItemListWidget::isHidden() const
 563 {
 564     return false;
 565 }
 566
 567 QFont KStandardItemListWidget::customizedFont(const QFont& baseFont) const
 568 {
 569     return baseFont;
 570 }
 571
 572 QPalette::ColorRole KStandardItemListWidget::normalTextColorRole() const
 573 {
 574     return QPalette::Text;
 575 }
 576
 577 void KStandardItemListWidget::setTextColor(const QColor& color)
 578 {
 579     if (color != m_customTextColor) {
 580         m_customTextColor = color;
 581         updateAdditionalInfoTextColor();
 582         update();
 583     }
 584 }
 585
 586 QColor KStandardItemListWidget::textColor() const
 587 {
 588     if (!isSelected()) {
 589         if (m_isHidden) {
 590             return m_additionalInfoTextColor;
 591         } else if (m_customTextColor.isValid()) {
 592             return m_customTextColor;
 593         }
 594     }
 595
 596     const QPalette::ColorGroup group = isActiveWindow() ? QPalette::Active : QPalette::Inactive;
 597     const QPalette::ColorRole role = isSelected() ? QPalette::HighlightedText : normalTextColorRole();
 598     return styleOption().palette.color(group, role);
 599 }
 600
 601 void KStandardItemListWidget::setOverlay(const QPixmap& overlay)
 602 {
 603     m_overlay = overlay;
 604     m_dirtyContent = true;
 605     update();
 606 }
 607
 608 QPixmap KStandardItemListWidget::overlay() const
 609 {
 610     return m_overlay;
 611 }
 612
 613
 614 QString KStandardItemListWidget::roleText(const QByteArray& role,
 615                                           const QHash<QByteArray, QVariant>& values) const
 616 {
 617     return static_cast<const KStandardItemListWidgetInformant*>(informant())->roleText(role, values);
 618 }
 619
 620 void KStandardItemListWidget::dataChanged(const QHash<QByteArray, QVariant>& current,
 621                                           const QSet<QByteArray>& roles)
 622 {
 623     Q_UNUSED(current);
 624
 625     m_dirtyContent = true;
 626
 627     QSet<QByteArray> dirtyRoles;
 628     if (roles.isEmpty()) {
 629         dirtyRoles = visibleRoles().toSet();
 630     } else {
 631         dirtyRoles = roles;
 632     }
 633
 634     // The icon-state might depend from other roles and hence is
 635     // marked as dirty whenever a role has been changed
 636     dirtyRoles.insert("iconPixmap");
 637     dirtyRoles.insert("iconName");
 638
 639     QSetIterator<QByteArray> it(dirtyRoles);
 640     while (it.hasNext()) {
 641         const QByteArray& role = it.next();
 642         m_dirtyContentRoles.insert(role);
 643     }
 644 }
 645
 646 void KStandardItemListWidget::visibleRolesChanged(const QList<QByteArray>& current,
 647                                               const QList<QByteArray>& previous)
 648 {
 649     Q_UNUSED(previous);
 650     m_sortedVisibleRoles = current;
 651     m_dirtyLayout = true;
 652 }
 653
 654 void KStandardItemListWidget::columnWidthChanged(const QByteArray& role,
 655                                              qreal current,
 656                                              qreal previous)
 657 {
 658     Q_UNUSED(role);
 659     Q_UNUSED(current);
 660     Q_UNUSED(previous);
 661     m_dirtyLayout = true;
 662 }
 663
 664 void KStandardItemListWidget::styleOptionChanged(const KItemListStyleOption& current,
 665                                              const KItemListStyleOption& previous)
 666 {
 667     Q_UNUSED(current);
 668     Q_UNUSED(previous);
 669     updateAdditionalInfoTextColor();
 670     m_dirtyLayout = true;
 671 }
 672
 673 void KStandardItemListWidget::hoveredChanged(bool hovered)
 674 {
 675     Q_UNUSED(hovered);
 676     m_dirtyLayout = true;
 677 }
 678
 679 void KStandardItemListWidget::selectedChanged(bool selected)
 680 {
 681     Q_UNUSED(selected);
 682     updateAdditionalInfoTextColor();
 683     m_dirtyContent = true;
 684 }
 685
 686 void KStandardItemListWidget::siblingsInformationChanged(const QBitArray& current, const QBitArray& previous)
 687 {
 688     Q_UNUSED(current);
 689     Q_UNUSED(previous);
 690     m_dirtyLayout = true;
 691 }
 692
 693 int KStandardItemListWidget::selectionLength(const QString& text) const
 694 {
 695     return text.length();
 696 }
 697
 698 void KStandardItemListWidget::editedRoleChanged(const QByteArray& current, const QByteArray& previous)
 699 {
 700     Q_UNUSED(previous);
 701
 702     QGraphicsView* parent = scene()->views()[0];
 703     if (current.isEmpty() || !parent || current != "text") {
 704         if (m_roleEditor) {
 705             emit roleEditingCanceled(index(), current, data().value(current));
 706
 707             disconnect(m_roleEditor, SIGNAL(roleEditingCanceled(QByteArray,QVariant)),
 708                        this, SLOT(slotRoleEditingCanceled(QByteArray,QVariant)));
 709             disconnect(m_roleEditor, SIGNAL(roleEditingFinished(QByteArray,QVariant)),
 710                        this, SLOT(slotRoleEditingFinished(QByteArray,QVariant)));
 711
 712             if (m_oldRoleEditor) {
 713                 m_oldRoleEditor->deleteLater();
 714             }
 715             m_oldRoleEditor = m_roleEditor;
 716             m_roleEditor->hide();
 717             m_roleEditor = 0;
 718         }
 719         return;
 720     }
 721
 722     Q_ASSERT(!m_roleEditor);
 723
 724     const TextInfo* textInfo = m_textInfo.value("text");
 725
 726     m_roleEditor = new KItemListRoleEditor(parent);
 727     m_roleEditor->setRole(current);
 728     m_roleEditor->setFont(styleOption().font);
 729
 730     const QString text = data().value(current).toString();
 731     m_roleEditor->setPlainText(text);
 732
 733     QTextOption textOption = textInfo->staticText.textOption();
 734     m_roleEditor->document()->setDefaultTextOption(textOption);
 735
 736     const int textSelectionLength = selectionLength(text);
 737
 738     if (textSelectionLength > 0) {
 739         QTextCursor cursor = m_roleEditor->textCursor();
 740         cursor.movePosition(QTextCursor::StartOfBlock);
 741         cursor.movePosition(QTextCursor::NextCharacter, QTextCursor::KeepAnchor, textSelectionLength);
 742         m_roleEditor->setTextCursor(cursor);
 743     }
 744
 745     connect(m_roleEditor, SIGNAL(roleEditingCanceled(QByteArray,QVariant)),
 746             this, SLOT(slotRoleEditingCanceled(QByteArray,QVariant)));
 747     connect(m_roleEditor, SIGNAL(roleEditingFinished(QByteArray,QVariant)),
 748             this, SLOT(slotRoleEditingFinished(QByteArray,QVariant)));
 749
 750     // Adjust the geometry of the editor
 751     QRectF rect = roleEditingRect(current);
 752     const int frameWidth = m_roleEditor->frameWidth();
 753     rect.adjust(-frameWidth, -frameWidth, frameWidth, frameWidth);
 754     rect.translate(pos());
 755     if (rect.right() > parent->width()) {
 756         rect.setWidth(parent->width() - rect.left());
 757     }
 758     m_roleEditor->setGeometry(rect.toRect());
 759     m_roleEditor->show();
 760     m_roleEditor->setFocus();
 761 }
 762
 763 void KStandardItemListWidget::resizeEvent(QGraphicsSceneResizeEvent* event)
 764 {
 765     if (m_roleEditor) {
 766         setEditedRole(QByteArray());
 767         Q_ASSERT(!m_roleEditor);
 768     }
 769
 770     KItemListWidget::resizeEvent(event);
 771
 772     m_dirtyLayout = true;
 773 }
 774
 775 void KStandardItemListWidget::showEvent(QShowEvent* event)
 776 {
 777     KItemListWidget::showEvent(event);
 778
 779     // Listen to changes of the clipboard to mark the item as cut/uncut
 780     KFileItemClipboard* clipboard = KFileItemClipboard::instance();
 781
 782     const KUrl itemUrl = data().value("url").value<KUrl>();
 783     m_isCut = clipboard->isCut(itemUrl);
 784
 785     connect(clipboard, SIGNAL(cutItemsChanged()),
 786             this, SLOT(slotCutItemsChanged()));
 787 }
 788
 789 void KStandardItemListWidget::hideEvent(QHideEvent* event)
 790 {
 791     disconnect(KFileItemClipboard::instance(), SIGNAL(cutItemsChanged()),
 792                this, SLOT(slotCutItemsChanged()));
 793
 794     KItemListWidget::hideEvent(event);
 795 }
 796
 797 void KStandardItemListWidget::slotCutItemsChanged()
 798 {
 799     const KUrl itemUrl = data().value("url").value<KUrl>();
 800     const bool isCut = KFileItemClipboard::instance()->isCut(itemUrl);
 801     if (m_isCut != isCut) {
 802         m_isCut = isCut;
 803         m_pixmap = QPixmap();
 804         m_dirtyContent = true;
 805         update();
 806     }
 807 }
 808
 809 void KStandardItemListWidget::slotRoleEditingCanceled(const QByteArray& role,
 810                                                       const QVariant& value)
 811 {
 812     closeRoleEditor();
 813     emit roleEditingCanceled(index(), role, value);
 814     setEditedRole(QByteArray());
 815 }
 816
 817 void KStandardItemListWidget::slotRoleEditingFinished(const QByteArray& role,
 818                                                       const QVariant& value)
 819 {
 820     closeRoleEditor();
 821     emit roleEditingFinished(index(), role, value);
 822     setEditedRole(QByteArray());
 823 }
 824
 825 void KStandardItemListWidget::triggerCacheRefreshing()
 826 {
 827     if ((!m_dirtyContent && !m_dirtyLayout) || index() < 0) {
 828         return;
 829     }
 830
 831     refreshCache();
 832
 833     const QHash<QByteArray, QVariant> values = data();
 834     m_isExpandable = m_supportsItemExpanding && values["isExpandable"].toBool();
 835     m_isHidden = isHidden();
 836     m_customizedFont = customizedFont(styleOption().font);
 837     m_customizedFontMetrics = QFontMetrics(m_customizedFont);
 838
 839     updateExpansionArea();
 840     updateTextsCache();
 841     updatePixmapCache();
 842
 843     m_dirtyLayout = false;
 844     m_dirtyContent = false;
 845     m_dirtyContentRoles.clear();
 846 }
 847
 848 void KStandardItemListWidget::updateExpansionArea()
 849 {
 850     if (m_supportsItemExpanding) {
 851         const QHash<QByteArray, QVariant> values = data();
 852         const int expandedParentsCount = values.value("expandedParentsCount", 0).toInt();
 853         if (expandedParentsCount >= 0) {
 854             const KItemListStyleOption& option = styleOption();
 855             const qreal widgetHeight = size().height();
 856             const qreal inc = (widgetHeight - option.iconSize) / 2;
 857             const qreal x = expandedParentsCount * widgetHeight + inc;
 858             const qreal y = inc;
 859             m_expansionArea = QRectF(x, y, option.iconSize, option.iconSize);
 860             return;
 861         }
 862     }
 863
 864     m_expansionArea = QRectF();
 865 }
 866
 867 void KStandardItemListWidget::updatePixmapCache()
 868 {
 869     // Precondition: Requires already updated m_textPos values to calculate
 870     // the remaining height when the alignment is vertical.
 871
 872     const QSizeF widgetSize = size();
 873     const bool iconOnTop = (m_layout == IconsLayout);
 874     const KItemListStyleOption& option = styleOption();
 875     const qreal padding = option.padding;
 876
 877     const int maxIconWidth = iconOnTop ? widgetSize.width() - 2 * padding : option.iconSize;
 878     const int maxIconHeight = option.iconSize;
 879
 880     const QHash<QByteArray, QVariant> values = data();
 881
 882     bool updatePixmap = (m_pixmap.width() != maxIconWidth || m_pixmap.height() != maxIconHeight);
 883     if (!updatePixmap && m_dirtyContent) {
 884         updatePixmap = m_dirtyContentRoles.isEmpty()
 885                        || m_dirtyContentRoles.contains("iconPixmap")
 886                        || m_dirtyContentRoles.contains("iconName")
 887                        || m_dirtyContentRoles.contains("iconOverlays");
 888     }
 889
 890     if (updatePixmap) {
 891         m_pixmap = values["iconPixmap"].value<QPixmap>();
 892         if (m_pixmap.isNull()) {
 893             // Use the icon that fits to the MIME-type
 894             QString iconName = values["iconName"].toString();
 895             if (iconName.isEmpty()) {
 896                 // The icon-name has not been not resolved by KFileItemModelRolesUpdater,
 897                 // use a generic icon as fallback
 898                 iconName = QLatin1String("unknown");
 899             }
 900             const QStringList overlays = values["iconOverlays"].toStringList();
 901             m_pixmap = pixmapForIcon(iconName, overlays, maxIconHeight);
 902         } else if (m_pixmap.width() != maxIconWidth || m_pixmap.height() != maxIconHeight) {
 903             // A custom pixmap has been applied. Assure that the pixmap
 904             // is scaled to the maximum available size.
 905             KPixmapModifier::scale(m_pixmap, QSize(maxIconWidth, maxIconHeight));
 906         }
 907
 908         if (m_isCut) {
 909             KIconEffect* effect = KIconLoader::global()->iconEffect();
 910             m_pixmap = effect->apply(m_pixmap, KIconLoader::Desktop, KIconLoader::DisabledState);
 911         }
 912
 913         if (m_isHidden) {
 914             KIconEffect::semiTransparent(m_pixmap);
 915         }
 916
 917         if (isSelected()) {
 918             const QColor color = palette().brush(QPalette::Normal, QPalette::Highlight).color();
 919             QImage image = m_pixmap.toImage();
 920             KIconEffect::colorize(image, color, 0.8f);
 921             m_pixmap = QPixmap::fromImage(image);
 922         }
 923     }
 924
 925     if (!m_overlay.isNull()) {
 926         QPainter painter(&m_pixmap);
 927         painter.drawPixmap(0, m_pixmap.height() - m_overlay.height(), m_overlay);
 928     }
 929
 930     int scaledIconSize = 0;
 931     if (iconOnTop) {
 932         const TextInfo* textInfo = m_textInfo.value("text");
 933         scaledIconSize = static_cast<int>(textInfo->pos.y() - 2 * padding);
 934     } else {
 935         const int textRowsCount = (m_layout == CompactLayout) ? visibleRoles().count() : 1;
 936         const qreal requiredTextHeight = textRowsCount * m_customizedFontMetrics.height();
 937         scaledIconSize = (requiredTextHeight < maxIconHeight) ?
 938                            widgetSize.height() - 2 * padding : maxIconHeight;
 939     }
 940
 941     const int maxScaledIconWidth = iconOnTop ? widgetSize.width() - 2 * padding : scaledIconSize;
 942     const int maxScaledIconHeight = scaledIconSize;
 943
 944     m_scaledPixmapSize = m_pixmap.size();
 945     m_scaledPixmapSize.scale(maxScaledIconWidth, maxScaledIconHeight, Qt::KeepAspectRatio);
 946
 947     if (iconOnTop) {
 948         // Center horizontally and align on bottom within the icon-area
 949         m_pixmapPos.setX((widgetSize.width() - m_scaledPixmapSize.width()) / 2);
 950         m_pixmapPos.setY(padding + scaledIconSize - m_scaledPixmapSize.height());
 951     } else {
 952         // Center horizontally and vertically within the icon-area
 953         const TextInfo* textInfo = m_textInfo.value("text");
 954         m_pixmapPos.setX(textInfo->pos.x() - 2 * padding
 955                          - (scaledIconSize + m_scaledPixmapSize.width()) / 2);
 956         m_pixmapPos.setY(padding
 957                          + (scaledIconSize - m_scaledPixmapSize.height()) / 2);
 958     }
 959
 960     m_iconRect = QRectF(m_pixmapPos, QSizeF(m_scaledPixmapSize));
 961
 962     // Prepare the pixmap that is used when the item gets hovered
 963     if (isHovered()) {
 964         m_hoverPixmap = m_pixmap;
 965         KIconEffect* effect = KIconLoader::global()->iconEffect();
 966         // In the KIconLoader terminology, active = hover.
 967         if (effect->hasEffect(KIconLoader::Desktop, KIconLoader::ActiveState)) {
 968             m_hoverPixmap = effect->apply(m_pixmap, KIconLoader::Desktop, KIconLoader::ActiveState);
 969         } else {
 970             m_hoverPixmap = m_pixmap;
 971         }
 972     } else if (hoverOpacity() <= 0.0) {
 973         // No hover animation is ongoing. Clear m_hoverPixmap to save memory.
 974         m_hoverPixmap = QPixmap();
 975     }
 976 }
 977
 978 void KStandardItemListWidget::updateTextsCache()
 979 {
 980     QTextOption textOption;
 981     switch (m_layout) {
 982     case IconsLayout:
 983         textOption.setWrapMode(QTextOption::WrapAtWordBoundaryOrAnywhere);
 984         textOption.setAlignment(Qt::AlignHCenter);
 985         break;
 986     case CompactLayout:
 987     case DetailsLayout:
 988         textOption.setAlignment(Qt::AlignLeft);
 989         textOption.setWrapMode(QTextOption::NoWrap);
 990         break;
 991     default:
 992         Q_ASSERT(false);
 993         break;
 994     }
 995
 996     qDeleteAll(m_textInfo);
 997     m_textInfo.clear();
 998     for (int i = 0; i < m_sortedVisibleRoles.count(); ++i) {
 999         TextInfo* textInfo = new TextInfo();
1000         textInfo->staticText.setTextFormat(Qt::PlainText);
1001         textInfo->staticText.setPerformanceHint(QStaticText::AggressiveCaching);
1002         textInfo->staticText.setTextOption(textOption);
1003         m_textInfo.insert(m_sortedVisibleRoles[i], textInfo);
1004     }
1005
1006     switch (m_layout) {
1007     case IconsLayout:   updateIconsLayoutTextCache(); break;
1008     case CompactLayout: updateCompactLayoutTextCache(); break;
1009     case DetailsLayout: updateDetailsLayoutTextCache(); break;
1010     default: Q_ASSERT(false); break;
1011     }
1012
1013     const TextInfo* ratingTextInfo = m_textInfo.value("rating");
1014     if (ratingTextInfo) {
1015         // The text of the rating-role has been set to empty to get
1016         // replaced by a rating-image showing the rating as stars.
1017         const KItemListStyleOption& option = styleOption();
1018         QSizeF ratingSize = preferredRatingSize(option);
1019
1020         const qreal availableWidth = (m_layout == DetailsLayout)
1021                                      ? columnWidth("rating") - columnPadding(option)
1022                                      : size().width();
1023         if (ratingSize.width() > availableWidth) {
1024             ratingSize.rwidth() = availableWidth;
1025         }
1026         m_rating = QPixmap(ratingSize.toSize());
1027         m_rating.fill(Qt::transparent);
1028
1029         QPainter painter(&m_rating);
1030         const QRect rect(0, 0, m_rating.width(), m_rating.height());
1031         const int rating = data().value("rating").toInt();
1032         KRatingPainter::paintRating(&painter, rect, Qt::AlignJustify | Qt::AlignVCenter, rating);
1033     } else if (!m_rating.isNull()) {
1034         m_rating = QPixmap();
1035     }
1036 }
1037
1038 void KStandardItemListWidget::updateIconsLayoutTextCache()
1039 {
1040     //      +------+
1041     //      | Icon |
1042     //      +------+
1043     //
1044     //    Name role that
1045     // might get wrapped above
1046     //    several lines.
1047     //  Additional role 1
1048     //  Additional role 2
1049
1050     const QHash<QByteArray, QVariant> values = data();
1051
1052     const KItemListStyleOption& option = styleOption();
1053     const qreal padding = option.padding;
1054     const qreal maxWidth = size().width() - 2 * padding;
1055     const qreal widgetHeight = size().height();
1056     const qreal lineSpacing = m_customizedFontMetrics.lineSpacing();
1057
1058     // Initialize properties for the "text" role. It will be used as anchor
1059     // for initializing the position of the other roles.
1060     TextInfo* nameTextInfo = m_textInfo.value("text");
1061     const QString nameText = KStringHandler::preProcessWrap(values["text"].toString());
1062     nameTextInfo->staticText.setText(nameText);
1063
1064     // Calculate the number of lines required for the name and the required width
1065     qreal nameWidth = 0;
1066     qreal nameHeight = 0;
1067     QTextLine line;
1068
1069     const int additionalRolesCount = qMax(visibleRoles().count() - 1, 0);
1070     const int maxNameLines = (option.maxTextSize.height() / int(lineSpacing)) - additionalRolesCount;
1071
1072     QTextLayout layout(nameTextInfo->staticText.text(), m_customizedFont);
1073     layout.setTextOption(nameTextInfo->staticText.textOption());
1074     layout.beginLayout();
1075     int nameLineIndex = 0;
1076     while ((line = layout.createLine()).isValid()) {
1077         line.setLineWidth(maxWidth);
1078         nameWidth = qMax(nameWidth, line.naturalTextWidth());
1079         nameHeight += line.height();
1080
1081         ++nameLineIndex;
1082         if (nameLineIndex == maxNameLines) {
1083             // The maximum number of textlines has been reached. If this is
1084             // the case provide an elided text if necessary.
1085             const int textLength = line.textStart() + line.textLength();
1086             if (textLength < nameText.length()) {
1087                 // Elide the last line of the text
1088                 QString lastTextLine = nameText.mid(line.textStart());
1089                 lastTextLine = m_customizedFontMetrics.elidedText(lastTextLine,
1090                                                                   Qt::ElideRight,
1091                                                                   maxWidth);
1092                 const QString elidedText = nameText.left(line.textStart()) + lastTextLine;
1093                 nameTextInfo->staticText.setText(elidedText);
1094
1095                 const qreal lastLineWidth = m_customizedFontMetrics.boundingRect(lastTextLine).width();
1096                 nameWidth = qMax(nameWidth, lastLineWidth);
1097             }
1098             break;
1099         }
1100     }
1101     layout.endLayout();
1102
1103     // Use one line for each additional information
1104     nameTextInfo->staticText.setTextWidth(maxWidth);
1105     nameTextInfo->pos = QPointF(padding, widgetHeight -
1106                                          nameHeight -
1107                                          additionalRolesCount * lineSpacing -
1108                                          padding);
1109     m_textRect = QRectF(padding + (maxWidth - nameWidth) / 2,
1110                         nameTextInfo->pos.y(),
1111                         nameWidth,
1112                         nameHeight);
1113
1114     // Calculate the position for each additional information
1115     qreal y = nameTextInfo->pos.y() + nameHeight;
1116     foreach (const QByteArray& role, m_sortedVisibleRoles) {
1117         if (role == "text") {
1118             continue;
1119         }
1120
1121         const QString text = roleText(role, values);
1122         TextInfo* textInfo = m_textInfo.value(role);
1123         textInfo->staticText.setText(text);
1124
1125         qreal requiredWidth = 0;
1126
1127         QTextLayout layout(text, m_customizedFont);
1128         QTextOption textOption;
1129         textOption.setWrapMode(QTextOption::NoWrap);
1130         layout.setTextOption(textOption);
1131
1132         layout.beginLayout();
1133         QTextLine textLine = layout.createLine();
1134         if (textLine.isValid()) {
1135             textLine.setLineWidth(maxWidth);
1136             requiredWidth = textLine.naturalTextWidth();
1137             if (requiredWidth > maxWidth) {
1138                 const QString elidedText = m_customizedFontMetrics.elidedText(text, Qt::ElideRight, maxWidth);
1139                 textInfo->staticText.setText(elidedText);
1140                 requiredWidth = m_customizedFontMetrics.width(elidedText);
1141             } else if (role == "rating") {
1142                 // Use the width of the rating pixmap, because the rating text is empty.
1143                 requiredWidth = m_rating.width();
1144             }
1145         }
1146         layout.endLayout();
1147
1148         textInfo->pos = QPointF(padding, y);
1149         textInfo->staticText.setTextWidth(maxWidth);
1150
1151         const QRectF textRect(padding + (maxWidth - requiredWidth) / 2, y, requiredWidth, lineSpacing);
1152         m_textRect |= textRect;
1153
1154         y += lineSpacing;
1155     }
1156
1157     // Add a padding to the text rectangle
1158     m_textRect.adjust(-padding, -padding, padding, padding);
1159 }
1160
1161 void KStandardItemListWidget::updateCompactLayoutTextCache()
1162 {
1163     // +------+  Name role
1164     // | Icon |  Additional role 1
1165     // +------+  Additional role 2
1166
1167     const QHash<QByteArray, QVariant> values = data();
1168
1169     const KItemListStyleOption& option = styleOption();
1170     const qreal widgetHeight = size().height();
1171     const qreal lineSpacing = m_customizedFontMetrics.lineSpacing();
1172     const qreal textLinesHeight = qMax(visibleRoles().count(), 1) * lineSpacing;
1173     const int scaledIconSize = (textLinesHeight < option.iconSize) ? widgetHeight - 2 * option.padding : option.iconSize;
1174
1175     qreal maximumRequiredTextWidth = 0;
1176     const qreal x = option.padding * 3 + scaledIconSize;
1177     qreal y = qRound((widgetHeight - textLinesHeight) / 2);
1178     const qreal maxWidth = size().width() - x - option.padding;
1179     foreach (const QByteArray& role, m_sortedVisibleRoles) {
1180         const QString text = roleText(role, values);
1181         TextInfo* textInfo = m_textInfo.value(role);
1182         textInfo->staticText.setText(text);
1183
1184         qreal requiredWidth = m_customizedFontMetrics.width(text);
1185         if (requiredWidth > maxWidth) {
1186             requiredWidth = maxWidth;
1187             const QString elidedText = m_customizedFontMetrics.elidedText(text, Qt::ElideRight, maxWidth);
1188             textInfo->staticText.setText(elidedText);
1189         }
1190
1191         textInfo->pos = QPointF(x, y);
1192         textInfo->staticText.setTextWidth(maxWidth);
1193
1194         maximumRequiredTextWidth = qMax(maximumRequiredTextWidth, requiredWidth);
1195
1196         y += lineSpacing;
1197     }
1198
1199     m_textRect = QRectF(x - 2 * option.padding, 0, maximumRequiredTextWidth + 3 * option.padding, widgetHeight);
1200 }
1201
1202 void KStandardItemListWidget::updateDetailsLayoutTextCache()
1203 {
1204     // Precondition: Requires already updated m_expansionArea
1205     // to determine the left position.
1206
1207     // +------+
1208     // | Icon |  Name role   Additional role 1   Additional role 2
1209     // +------+
1210     m_textRect = QRectF();
1211
1212     const KItemListStyleOption& option = styleOption();
1213     const QHash<QByteArray, QVariant> values = data();
1214
1215     const qreal widgetHeight = size().height();
1216     const int scaledIconSize = widgetHeight - 2 * option.padding;
1217     const int fontHeight = m_customizedFontMetrics.height();
1218
1219     const qreal columnWidthInc = columnPadding(option);
1220     qreal firstColumnInc = scaledIconSize;
1221     if (m_supportsItemExpanding) {
1222         firstColumnInc += (m_expansionArea.left() + m_expansionArea.right() + widgetHeight) / 2;
1223     } else {
1224         firstColumnInc += option.padding;
1225     }
1226
1227     qreal x = firstColumnInc;
1228     const qreal y = qMax(qreal(option.padding), (widgetHeight - fontHeight) / 2);
1229
1230     foreach (const QByteArray& role, m_sortedVisibleRoles) {
1231         QString text = roleText(role, values);
1232
1233         // Elide the text in case it does not fit into the available column-width
1234         qreal requiredWidth = m_customizedFontMetrics.width(text);
1235         const qreal roleWidth = columnWidth(role);
1236         qreal availableTextWidth = roleWidth - columnWidthInc;
1237
1238         const bool isTextRole = (role == "text");
1239         if (isTextRole) {
1240             availableTextWidth -= firstColumnInc;
1241         }
1242
1243         if (requiredWidth > availableTextWidth) {
1244             text = m_customizedFontMetrics.elidedText(text, Qt::ElideRight, availableTextWidth);
1245             requiredWidth = m_customizedFontMetrics.width(text);
1246         }
1247
1248         TextInfo* textInfo = m_textInfo.value(role);
1249         textInfo->staticText.setText(text);
1250         textInfo->pos = QPointF(x + columnWidthInc / 2, y);
1251         x += roleWidth;
1252
1253         if (isTextRole) {
1254             const qreal textWidth = option.extendedSelectionRegion
1255                                     ? size().width() - textInfo->pos.x()
1256                                     : requiredWidth + 2 * option.padding;
1257             m_textRect = QRectF(textInfo->pos.x() - 2 * option.padding, 0,
1258                                 textWidth + option.padding, size().height());
1259
1260             // The column after the name should always be aligned on the same x-position independent
1261             // from the expansion-level shown in the name column
1262             x -= firstColumnInc;
1263         } else if (isRoleRightAligned(role)) {
1264             textInfo->pos.rx() += roleWidth - requiredWidth - columnWidthInc;
1265         }
1266     }
1267 }
1268
1269 void KStandardItemListWidget::updateAdditionalInfoTextColor()
1270 {
1271     QColor c1;
1272     if (m_customTextColor.isValid()) {
1273         c1 = m_customTextColor;
1274     } else if (isSelected() && m_layout != DetailsLayout) {
1275         c1 = styleOption().palette.highlightedText().color();
1276     } else {
1277         c1 = styleOption().palette.text().color();
1278     }
1279
1280     // For the color of the additional info the inactive text color
1281     // is not used as this might lead to unreadable text for some color schemes. Instead
1282     // the text color c1 is slightly mixed with the background color.
1283     const QColor c2 = styleOption().palette.base().color();
1284     const int p1 = 70;
1285     const int p2 = 100 - p1;
1286     m_additionalInfoTextColor = QColor((c1.red()   * p1 + c2.red()   * p2) / 100,
1287                                        (c1.green() * p1 + c2.green() * p2) / 100,
1288                                        (c1.blue()  * p1 + c2.blue()  * p2) / 100);
1289 }
1290
1291 void KStandardItemListWidget::drawPixmap(QPainter* painter, const QPixmap& pixmap)
1292 {
1293     if (m_scaledPixmapSize != pixmap.size()) {
1294         QPixmap scaledPixmap = pixmap;
1295         KPixmapModifier::scale(scaledPixmap, m_scaledPixmapSize);
1296         painter->drawPixmap(m_pixmapPos, scaledPixmap);
1297
1298 #ifdef KSTANDARDITEMLISTWIDGET_DEBUG
1299         painter->setPen(Qt::blue);
1300         painter->drawRect(QRectF(m_pixmapPos, QSizeF(m_scaledPixmapSize)));
1301 #endif
1302     } else {
1303         painter->drawPixmap(m_pixmapPos, pixmap);
1304     }
1305 }
1306
1307 void KStandardItemListWidget::drawSiblingsInformation(QPainter* painter)
1308 {
1309     const int siblingSize = size().height();
1310     const int x = (m_expansionArea.left() + m_expansionArea.right() - siblingSize) / 2;
1311     QRect siblingRect(x, 0, siblingSize, siblingSize);
1312
1313     QStyleOption option;
1314     option.palette.setColor(QPalette::Text, option.palette.color(normalTextColorRole()));
1315     bool isItemSibling = true;
1316
1317     const QBitArray siblings = siblingsInformation();
1318     for (int i = siblings.count() - 1; i >= 0; --i) {
1319         option.rect = siblingRect;
1320         option.state = siblings.at(i) ? QStyle::State_Sibling : QStyle::State_None;
1321
1322         if (isItemSibling) {
1323             option.state |= QStyle::State_Item;
1324             if (m_isExpandable) {
1325                 option.state |= QStyle::State_Children;
1326             }
1327             if (data()["isExpanded"].toBool()) {
1328                 option.state |= QStyle::State_Open;
1329             }
1330             isItemSibling = false;
1331         }
1332
1333         style()->drawPrimitive(QStyle::PE_IndicatorBranch, &option, painter);
1334
1335         siblingRect.translate(-siblingRect.width(), 0);
1336     }
1337 }
1338
1339 QRectF KStandardItemListWidget::roleEditingRect(const QByteArray& role) const
1340 {
1341     const TextInfo* textInfo = m_textInfo.value(role);
1342     if (!textInfo) {
1343         return QRectF();
1344     }
1345
1346     QRectF rect(textInfo->pos, textInfo->staticText.size());
1347     if (m_layout == DetailsLayout) {
1348         rect.setWidth(columnWidth(role) - rect.x());
1349     }
1350
1351     return rect;
1352 }
1353
1354 void KStandardItemListWidget::closeRoleEditor()
1355 {
1356     disconnect(m_roleEditor, SIGNAL(roleEditingCanceled(QByteArray,QVariant)),
1357                this, SLOT(slotRoleEditingCanceled(QByteArray,QVariant)));
1358     disconnect(m_roleEditor, SIGNAL(roleEditingFinished(QByteArray,QVariant)),
1359                this, SLOT(slotRoleEditingFinished(QByteArray,QVariant)));
1360
1361     if (m_roleEditor->hasFocus()) {
1362         // If the editing was not ended by a FocusOut event, we have
1363         // to transfer the keyboard focus back to the KItemListContainer.
1364         scene()->views()[0]->parentWidget()->setFocus();
1365     }
1366
1367     if (m_oldRoleEditor) {
1368         m_oldRoleEditor->deleteLater();
1369     }
1370     m_oldRoleEditor = m_roleEditor;
1371     m_roleEditor->hide();
1372     m_roleEditor = 0;
1373 }
1374
1375 QPixmap KStandardItemListWidget::pixmapForIcon(const QString& name, const QStringList& overlays, int size)
1376 {
1377     const QString key = "KStandardItemListWidget:" % name % ":" % overlays.join(":") % ":" % QString::number(size);
1378     QPixmap pixmap;
1379
1380     if (!QPixmapCache::find(key, pixmap)) {
1381         const KIcon icon(name);
1382
1383         int requestedSize;
1384         if (size <= KIconLoader::SizeSmall) {
1385             requestedSize = KIconLoader::SizeSmall;
1386         } else if (size <= KIconLoader::SizeSmallMedium) {
1387             requestedSize = KIconLoader::SizeSmallMedium;
1388         } else if (size <= KIconLoader::SizeMedium) {
1389             requestedSize = KIconLoader::SizeMedium;
1390         } else if (size <= KIconLoader::SizeLarge) {
1391             requestedSize = KIconLoader::SizeLarge;
1392         } else if (size <= KIconLoader::SizeHuge) {
1393             requestedSize = KIconLoader::SizeHuge;
1394         } else if (size <= KIconLoader::SizeEnormous) {
1395             requestedSize = KIconLoader::SizeEnormous;
1396         } else if (size <= KIconLoader::SizeEnormous * 2) {
1397             requestedSize = KIconLoader::SizeEnormous * 2;
1398         } else {
1399             requestedSize = size;
1400         }
1401
1402         pixmap = icon.pixmap(requestedSize, requestedSize);
1403         if (requestedSize != size) {
1404             KPixmapModifier::scale(pixmap, QSize(size, size));
1405         }
1406
1407         // Strangely KFileItem::overlays() returns empty string-values, so
1408         // we need to check first whether an overlay must be drawn at all.
1409         // It is more efficient to do it here, as KIconLoader::drawOverlays()
1410         // assumes that an overlay will be drawn and has some additional
1411         // setup time.
1412         foreach (const QString& overlay, overlays) {
1413             if (!overlay.isEmpty()) {
1414                 // There is at least one overlay, draw all overlays above m_pixmap
1415                 // and cancel the check
1416                 KIconLoader::global()->drawOverlays(overlays, pixmap, KIconLoader::Desktop);
1417                 break;
1418             }
1419         }
1420
1421         QPixmapCache::insert(key, pixmap);
1422     }
1423
1424     return pixmap;
1425 }
1426
1427 QSizeF KStandardItemListWidget::preferredRatingSize(const KItemListStyleOption& option)
1428 {
1429     const qreal height = option.fontMetrics.ascent();
1430     return QSizeF(height * 5, height);
1431 }
1432
1433 qreal KStandardItemListWidget::columnPadding(const KItemListStyleOption& option)
1434 {
1435     return option.padding * 6;
1436 }
1437
1438 #include "kstandarditemlistwidget.moc"