/* Copyright (C) 2013 Hong Jen Yee (PCMan) This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version. This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with this program; if not, write to the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. */ #include "desktopitemdelegate.h" #include #include #include #include #include #include #include #include namespace PCManFM { DesktopItemDelegate::DesktopItemDelegate(QListView* view, QObject* parent): QStyledItemDelegate(parent ? parent : view), view_(view), symlinkIcon_(QIcon::fromTheme("emblem-symbolic-link")), shadowColor_(0, 0, 0) { } // FIXME: we need to figure out a way to derive from Fm::FolderItemDelegate to avoid code duplication. void DesktopItemDelegate::paint(QPainter* painter, const QStyleOptionViewItem& option, const QModelIndex& index) const { Q_ASSERT(index.isValid()); QStyleOptionViewItemV4 opt = option; initStyleOption(&opt, index); painter->save(); painter->setClipRect(option.rect); opt.decorationAlignment = Qt::AlignHCenter | Qt::AlignTop; opt.displayAlignment = Qt::AlignTop | Qt::AlignHCenter; // draw the icon QIcon::Mode iconMode; if(opt.state & QStyle::State_Enabled) { if(opt.state & QStyle::State_Selected) iconMode = QIcon::Selected; else { iconMode = QIcon::Normal; } } else iconMode = QIcon::Disabled; QPoint iconPos(opt.rect.x() + (opt.rect.width() - opt.decorationSize.width()) / 2, opt.rect.y()); QPixmap pixmap = opt.icon.pixmap(opt.decorationSize, iconMode); painter->drawPixmap(iconPos, pixmap); // draw some emblems for the item if needed // we only support symlink emblem at the moment FmFileInfo* file = static_cast(index.data(Fm::FolderModel::FileInfoRole).value()); if(file) { if(fm_file_info_is_symlink(file)) { painter->drawPixmap(iconPos, symlinkIcon_.pixmap(opt.decorationSize / 2, iconMode)); } } // draw text QSize gridSize = view_->gridSize() - QSize(6, 6); QRectF textRect(opt.rect.x() - (gridSize.width() - opt.rect.width()) / 2, opt.rect.y() + opt.decorationSize.height(), gridSize.width(), gridSize.height() - opt.decorationSize.height()); drawText(painter, opt, textRect); if(opt.state & QStyle::State_HasFocus) { // FIXME: draw focus rect } painter->restore(); } void DesktopItemDelegate::drawText(QPainter* painter, QStyleOptionViewItemV4& opt, QRectF& textRect) const { QTextLayout layout(opt.text, opt.font); QTextOption textOption; textOption.setAlignment(opt.displayAlignment); textOption.setWrapMode(QTextOption::WrapAtWordBoundaryOrAnywhere); textOption.setTextDirection(opt.direction); layout.setTextOption(textOption); qreal height = 0; qreal width = 0; int visibleLines = 0; layout.beginLayout(); QString elidedText; textRect.adjust(2, 2, -2, -2); // a 2-px margin is considered at FolderView::updateGridSize() for(;;) { QTextLine line = layout.createLine(); if(!line.isValid()) break; line.setLineWidth(textRect.width()); height += opt.fontMetrics.leading(); line.setPosition(QPointF(0, height)); if((height + line.height() + textRect.y()) > textRect.bottom()) { // if part of this line falls outside the textRect, ignore it and quit. QTextLine lastLine = layout.lineAt(visibleLines - 1); elidedText = opt.text.mid(lastLine.textStart()); elidedText = opt.fontMetrics.elidedText(elidedText, opt.textElideMode, textRect.width()); break; } height += line.height(); width = qMax(width, line.naturalTextWidth()); ++ visibleLines; } layout.endLayout(); width = qMax(width, (qreal)opt.fontMetrics.width(elidedText)); QRectF boundRect = layout.boundingRect(); boundRect.setWidth(width); boundRect.setHeight(height); boundRect.moveTo(textRect.x() + (textRect.width() - width)/2, textRect.y()); QRectF selRect = boundRect.adjusted(-2, -2, 2, 2); if(!painter) { // no painter, calculate the bounding rect only textRect = selRect; return; } if((opt.state & QStyle::State_Selected) && opt.widget) { QPalette palette = opt.widget->palette(); // qDebug("w: %f, h:%f, m:%f", boundRect.width(), boundRect.height(), layout.minimumWidth()); painter->fillRect(selRect, palette.highlight()); } else { // only draw shadow for non-selected items // draw shadow, FIXME: is it possible to use QGraphicsDropShadowEffect here? QPen prevPen = painter->pen(); painter->setPen(QPen(shadowColor_)); for(int i = 0; i < visibleLines; ++i) { QTextLine line = layout.lineAt(i); if(i == (visibleLines - 1) && !elidedText.isEmpty()) { // the last line, draw elided text QPointF pos(boundRect.x() + line.position().x() + 1, boundRect.y() + line.y() + line.ascent() + 1); painter->drawText(pos, elidedText); } else { line.draw(painter, textRect.topLeft() + QPointF(1, 1)); } } painter->setPen(prevPen); } // draw text for(int i = 0; i < visibleLines; ++i) { QTextLine line = layout.lineAt(i); if(i == (visibleLines - 1) && !elidedText.isEmpty()) { // the last line, draw elided text QPointF pos(boundRect.x() + line.position().x(), boundRect.y() + line.y() + line.ascent()); painter->drawText(pos, elidedText); } else { line.draw(painter, textRect.topLeft()); } } } QSize DesktopItemDelegate::sizeHint(const QStyleOptionViewItem& option, const QModelIndex& index) const { QVariant value = index.data(Qt::SizeHintRole); if(value.isValid()) return qvariant_cast(value); QStyleOptionViewItemV4 opt = option; initStyleOption(&opt, index); opt.decorationAlignment = Qt::AlignHCenter|Qt::AlignTop; opt.displayAlignment = Qt::AlignTop|Qt::AlignHCenter; QSize gridSize = view_->gridSize() - QSize(6, 6); // a 6-px margin is added at FolderView::updateGridSize() Q_ASSERT(gridSize != QSize()); QRectF textRect(0, 0, gridSize.width(), gridSize.height() - opt.decorationSize.height()); drawText(NULL, opt, textRect); // passing NULL for painter will calculate the bounding rect only. int width = qMax((int)textRect.width(), opt.decorationSize.width()); int height = opt.decorationSize.height() + textRect.height(); return QSize(width, height); } DesktopItemDelegate::~DesktopItemDelegate() { } } // namespace PCManFM