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