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/*
* qtmaildir - a Qt6 mail client for notmuch-indexed Maildirs
* Copyright (C) 2026 Danilo M. <danix@danix.xyz>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*
* 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 "tagchip.h"
#include <QApplication>
#include <QFontMetrics>
#include <QPainter>
#include "tagcolors.h"
#include "threadlistmodel.h"
namespace TagChip {
QSize sizeFor(const QFontMetrics &metrics, const QString &text)
{
return QSize(metrics.horizontalAdvance(text) + kPaddingX * 2,
metrics.height() + kPaddingY * 2);
}
void paint(QPainter *painter, const QRect &rect, const QString &text,
const QColor &background)
{
painter->save();
painter->setRenderHint(QPainter::Antialiasing, true);
painter->setPen(Qt::NoPen);
painter->setBrush(background);
painter->drawRoundedRect(rect, kRadius, kRadius);
painter->setPen(TagColors::textColourOn(background));
painter->drawText(rect, Qt::AlignCenter, text);
painter->restore();
}
} // namespace TagChip
void SubjectDelegate::paint(QPainter *painter, const QStyleOptionViewItem &option,
const QModelIndex &index) const
{
const QString account =
index.data(ThreadListModel::AccountLabelRole).toString();
if (account.isEmpty()) {
QStyledItemDelegate::paint(painter, option, index);
return;
}
// Draw the row's own background and selection first, then the chip and the
// subject on top, so a selected or struck-through row still looks right.
QStyleOptionViewItem chrome = option;
initStyleOption(&chrome, index);
chrome.text.clear();
const QWidget *widget = option.widget;
QStyle *style = widget ? widget->style() : QApplication::style();
style->drawControl(QStyle::CE_ItemViewItem, &chrome, painter, widget);
const QFontMetrics metrics(option.font);
const QSize chipSize = TagChip::sizeFor(metrics, account);
const QRect chipRect(option.rect.left() + TagChip::kSpacing,
option.rect.top()
+ (option.rect.height() - chipSize.height()) / 2,
chipSize.width(), chipSize.height());
const QColor colour =
index.data(ThreadListModel::AccountColourRole).value<QColor>();
TagChip::paint(painter, chipRect, account,
colour.isValid() ? colour : QColor(0x55, 0x55, 0x5f));
// The subject follows the chip, elided so a long one cannot overflow.
QRect textRect = option.rect;
textRect.setLeft(chipRect.right() + TagChip::kSpacing * 2);
if (textRect.width() <= 0)
return;
painter->save();
// The model supplies the row's colours; honouring them keeps a deleted
// thread white-on-red here as everywhere else.
const QVariant foreground = index.data(Qt::ForegroundRole);
if (foreground.isValid())
painter->setPen(foreground.value<QBrush>().color());
else if (option.state & QStyle::State_Selected)
painter->setPen(option.palette.highlightedText().color());
else
painter->setPen(option.palette.text().color());
// The model's font carries bold for unread and strike-out for deleted.
// initStyleOption() already resolved it into chrome.font; using it rather
// than option.font is what keeps those cues on a delegate-drawn subject.
const QVariant fontData = index.data(Qt::FontRole);
const QFont rowFont = fontData.isValid() ? fontData.value<QFont>()
: chrome.font;
painter->setFont(rowFont);
const QFontMetrics rowMetrics(rowFont);
painter->drawText(textRect, Qt::AlignVCenter | Qt::AlignLeft,
rowMetrics.elidedText(index.data(Qt::DisplayRole).toString(),
Qt::ElideRight, textRect.width()));
painter->restore();
}
QSize SubjectDelegate::sizeHint(const QStyleOptionViewItem &option,
const QModelIndex &index) const
{
QSize size = QStyledItemDelegate::sizeHint(option, index);
const QString account =
index.data(ThreadListModel::AccountLabelRole).toString();
if (!account.isEmpty()) {
const QFontMetrics metrics(option.font);
size.setWidth(size.width() + TagChip::sizeFor(metrics, account).width()
+ TagChip::kSpacing * 3);
}
return size;
}
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