QPixmap WindowPreview::hoverIcon() const {
KIconEffect *effect = KIconLoader::global()->iconEffect();
if (effect->hasEffect(KIconLoader::Desktop, KIconLoader::ActiveState)) {
return effect->apply(
m_icon,
KIconLoader::Desktop,
KIconLoader::ActiveState);
}
else {
return m_icon;
}
}
void KStandardItemListWidget::updatePixmapCache()
{
// Precondition: Requires already updated m_textPos values to calculate
// the remaining height when the alignment is vertical.
const QSizeF widgetSize = size();
const bool iconOnTop = (m_layout == IconsLayout);
const KItemListStyleOption& option = styleOption();
const qreal padding = option.padding;
const int maxIconWidth = iconOnTop ? widgetSize.width() - 2 * padding : option.iconSize;
const int maxIconHeight = option.iconSize;
const QHash<QByteArray, QVariant> values = data();
bool updatePixmap = (m_pixmap.width() != maxIconWidth || m_pixmap.height() != maxIconHeight);
if (!updatePixmap && m_dirtyContent) {
updatePixmap = m_dirtyContentRoles.isEmpty()
|| m_dirtyContentRoles.contains("iconPixmap")
|| m_dirtyContentRoles.contains("iconName")
|| m_dirtyContentRoles.contains("iconOverlays");
}
if (updatePixmap) {
m_pixmap = values["iconPixmap"].value<QPixmap>();
if (m_pixmap.isNull()) {
// Use the icon that fits to the MIME-type
QString iconName = values["iconName"].toString();
if (iconName.isEmpty()) {
// The icon-name has not been not resolved by KFileItemModelRolesUpdater,
// use a generic icon as fallback
iconName = QLatin1String("unknown");
}
m_pixmap = pixmapForIcon(iconName, maxIconHeight);
} else if (m_pixmap.width() != maxIconWidth || m_pixmap.height() != maxIconHeight) {
// A custom pixmap has been applied. Assure that the pixmap
// is scaled to the maximum available size.
KPixmapModifier::scale(m_pixmap, QSize(maxIconWidth, maxIconHeight));
}
const QStringList overlays = values["iconOverlays"].toStringList();
// Strangely KFileItem::overlays() returns empty string-values, so
// we need to check first whether an overlay must be drawn at all.
// It is more efficient to do it here, as KIconLoader::drawOverlays()
// assumes that an overlay will be drawn and has some additional
// setup time.
foreach (const QString& overlay, overlays) {
if (!overlay.isEmpty()) {
// There is at least one overlay, draw all overlays above m_pixmap
// and cancel the check
KIconLoader::global()->drawOverlays(overlays, m_pixmap, KIconLoader::Desktop);
break;
}
}
if (m_isCut) {
KIconEffect* effect = KIconLoader::global()->iconEffect();
m_pixmap = effect->apply(m_pixmap, KIconLoader::Desktop, KIconLoader::DisabledState);
}
if (m_isHidden) {
KIconEffect::semiTransparent(m_pixmap);
}
if (isSelected()) {
const QColor color = palette().brush(QPalette::Normal, QPalette::Highlight).color();
QImage image = m_pixmap.toImage();
KIconEffect::colorize(image, color, 1.0f);
m_pixmap = QPixmap::fromImage(image);
}
}
if (!m_overlay.isNull()) {
QPainter painter(&m_pixmap);
painter.drawPixmap(0, m_pixmap.height() - m_overlay.height(), m_overlay);
}
int scaledIconSize = 0;
if (iconOnTop) {
const TextInfo* textInfo = m_textInfo.value("text");
scaledIconSize = static_cast<int>(textInfo->pos.y() - 2 * padding);
} else {
const int textRowsCount = (m_layout == CompactLayout) ? visibleRoles().count() : 1;
const qreal requiredTextHeight = textRowsCount * m_customizedFontMetrics.height();
scaledIconSize = (requiredTextHeight < maxIconHeight) ?
widgetSize.height() - 2 * padding : maxIconHeight;
}
const int maxScaledIconWidth = iconOnTop ? widgetSize.width() - 2 * padding : scaledIconSize;
const int maxScaledIconHeight = scaledIconSize;
m_scaledPixmapSize = m_pixmap.size();
m_scaledPixmapSize.scale(maxScaledIconWidth, maxScaledIconHeight, Qt::KeepAspectRatio);
if (iconOnTop) {
// Center horizontally and align on bottom within the icon-area
m_pixmapPos.setX((widgetSize.width() - m_scaledPixmapSize.width()) / 2);
m_pixmapPos.setY(padding + scaledIconSize - m_scaledPixmapSize.height());
} else {
// Center horizontally and vertically within the icon-area
const TextInfo* textInfo = m_textInfo.value("text");
m_pixmapPos.setX(textInfo->pos.x() - 2 * padding
- (scaledIconSize + m_scaledPixmapSize.width()) / 2);
m_pixmapPos.setY(padding
+ (scaledIconSize - m_scaledPixmapSize.height()) / 2);
}
m_iconRect = QRectF(m_pixmapPos, QSizeF(m_scaledPixmapSize));
// Prepare the pixmap that is used when the item gets hovered
if (isHovered()) {
m_hoverPixmap = m_pixmap;
KIconEffect* effect = KIconLoader::global()->iconEffect();
// In the KIconLoader terminology, active = hover.
if (effect->hasEffect(KIconLoader::Desktop, KIconLoader::ActiveState)) {
m_hoverPixmap = effect->apply(m_pixmap, KIconLoader::Desktop, KIconLoader::ActiveState);
} else {
m_hoverPixmap = m_pixmap;
}
} else if (hoverOpacity() <= 0.0) {
// No hover animation is ongoing. Clear m_hoverPixmap to save memory.
m_hoverPixmap = QPixmap();
}
}
