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