File indexing completed on 2024-05-12 04:58:19

 /* ============================================================
 * Falkon - Qt web browser
 * Copyright (C) 2010-2017 David Rosca <nowrep@gmail.com>
 *
 * 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 3 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, see <http://www.gnu.org/licenses/>.
 * ============================================================ */
 #include "pluginlistdelegate.h"
 
 #include <QPainter>
 #include <QListWidget>
 #include <QApplication>
 
 PluginListDelegate::PluginListDelegate(QListWidget* parent)
     : QStyledItemDelegate(parent)
     , m_rowHeight(0)
     , m_padding(0)
 {
 }
 
 void PluginListDelegate::paint(QPainter* painter, const QStyleOptionViewItem &option, const QModelIndex &index) const
 {
     QStyleOptionViewItem opt = option;
     initStyleOption(&opt, index);
 
     const QWidget* w = opt.widget;
     const QStyle* style = w ? w->style() : QApplication::style();
     const int height = opt.rect.height();
     const int center = height / 2 + opt.rect.top();
 
     painter->setLayoutDirection(Qt::LeftToRight);
 
     // Prepare title font
     QFont titleFont = opt.font;
     titleFont.setBold(true);
     titleFont.setPointSize(titleFont.pointSize() + 1);
 
     const QFontMetrics titleMetrics(titleFont);
     const QPalette::ColorRole colorRole = opt.state & QStyle::State_Selected ? QPalette::HighlightedText : QPalette::Text;
 
     QPalette::ColorGroup cg = opt.state & QStyle::State_Enabled ? QPalette::Normal : QPalette::Disabled;
     if (cg == QPalette::Normal && !(opt.state & QStyle::State_Active)) {
         cg = QPalette::Inactive;
     }
 
 #ifdef Q_OS_WIN
     opt.palette.setColor(QPalette::All, QPalette::HighlightedText, opt.palette.color(QPalette::Active, QPalette::Text));
     opt.palette.setColor(QPalette::All, QPalette::Highlight, opt.palette.base().color().darker(108));
 #endif
 
     QPalette textPalette = opt.palette;
     textPalette.setCurrentColorGroup(cg);
 
     int leftPosition = m_padding;
     int rightPosition = opt.rect.right() - m_padding;
 
     // Draw background
     style->drawPrimitive(QStyle::PE_PanelItemViewItem, &opt, painter, w);
 
     // Draw checkbox
     const int checkboxSize = 18;
     const int checkboxYPos = center - (checkboxSize / 2);
     QStyleOptionViewItem opt2 = opt;
     opt2.checkState == Qt::Checked ? opt2.state |= QStyle::State_On : opt2.state |= QStyle::State_Off;
     QRect styleCheckBoxRect = style->subElementRect(QStyle::SE_ItemViewItemCheckIndicator, &opt2, w);
     opt2.rect = QRect(leftPosition, checkboxYPos, styleCheckBoxRect.width(), styleCheckBoxRect.height());
     style->drawPrimitive(QStyle::PE_IndicatorItemViewItemCheck, &opt2, painter, w);
     leftPosition = opt2.rect.right() + m_padding;
 
     // Draw icon
     const int iconSize = 32;
     const int iconYPos = center - (iconSize / 2);
     QRect iconRect(leftPosition, iconYPos, iconSize, iconSize);
     QPixmap pixmap = index.data(Qt::DecorationRole).value<QIcon>().pixmap(iconSize);
     painter->drawPixmap(iconRect, pixmap);
     leftPosition = iconRect.right() + m_padding;
 
     // Draw plugin name
     const QString name = index.data(Qt::DisplayRole).toString();
     const int leftTitleEdge = leftPosition + 2;
     const int rightTitleEdge = rightPosition - m_padding;
     QRect nameRect(leftTitleEdge, opt.rect.top() + m_padding, rightTitleEdge - leftTitleEdge, titleMetrics.height());
     painter->setFont(titleFont);
     style->drawItemText(painter, nameRect, Qt::AlignLeft, textPalette, true, name, colorRole);
 
     // Draw description
     const int descriptionYPos = nameRect.bottom() + opt.fontMetrics.leading();
     QRect descriptionRect(nameRect.x(), descriptionYPos, nameRect.width(), opt.fontMetrics.height());
     const QString description = opt.fontMetrics.elidedText(index.data(Qt::UserRole + 2).toString(), Qt::ElideRight, descriptionRect.width());
     painter->setFont(opt.font);
     style->drawItemText(painter, descriptionRect, Qt::TextSingleLine | Qt::AlignLeft, textPalette, true, description, colorRole);
 }
 
 QSize PluginListDelegate::sizeHint(const QStyleOptionViewItem &option, const QModelIndex &index) const
 {
     Q_UNUSED(index)
 
     if (!m_rowHeight) {
         QStyleOptionViewItem opt(option);
         initStyleOption(&opt, index);
 
         const QWidget* w = opt.widget;
         const QStyle* style = w ? w->style() : QApplication::style();
         const int padding = style->pixelMetric(QStyle::PM_FocusFrameHMargin, nullptr) + 1;
 
         QFont titleFont = opt.font;
         titleFont.setBold(true);
         titleFont.setPointSize(titleFont.pointSize() + 1);
 
         m_padding = padding > 5 ? padding : 5;
 
         const QFontMetrics titleMetrics(titleFont);
 
         m_rowHeight = 2 * m_padding + 2 * opt.fontMetrics.leading() + opt.fontMetrics.height() + titleMetrics.height();
     }
 
     return QSize(200, m_rowHeight);
 }