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/*
* qtmaildir - a Qt6 GUI for a local notmuch-indexed Maildir
* 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 "marks.h"
#include <QHash>
#include <QPainter>
#include <QRect>
#include <QSvgRenderer>
namespace Marks {
QByteArray svg(Mark mark)
{
// Compiled in rather than loaded from a .qrc, for the linker reason given
// in marks.h. Generated from assets/icons/marks/*.svg, which stay the
// editable originals: change the asset, regenerate, do not hand-edit here.
switch (mark) {
case Mark::Attachment:
return QByteArray(
"<svg xmlns=\"http://www.w3.org/2000/svg\" width=\"16\" height=\"16\" "
"viewBox=\"0 0 16 16\"> <path fill=\"currentColor\" d=\"M 10.4,1.1 C "
"8.75,1.1 7.4,2.45 7.4,4.1 V 11.6 a 1.1,1.1 0 0 0 2.2,0 V 4.6 a "
"0.85,0.85 0 0 1 1.7,0 V 11.7 a 2.75,2.75 0 0 1 -5.5,0 V 4.35 a 1.1,1.1 "
"0 0 0 -2.2,0 V 11.7 C 3.6,14.4 5.8,16 8.35,16 10.9,16 13.1,14.4 "
"13.1,11.7 V 4.1 C 13.1,2.45 11.9,1.1 10.4,1.1 Z\"/> </svg>");
case Mark::Flagged:
return QByteArray(
"<svg xmlns=\"http://www.w3.org/2000/svg\" width=\"16\" height=\"16\" "
"viewBox=\"0 0 16 16\"> <path fill=\"currentColor\" d=\"M 8.00,1.05 "
"9.73,5.96 14.94,6.09 10.81,9.26 12.29,14.26 8.00,11.30 3.71,14.26 "
"5.19,9.26 1.06,6.09 6.27,5.96 Z\"/> </svg>");
case Mark::Passed:
return QByteArray(
"<svg xmlns=\"http://www.w3.org/2000/svg\" width=\"16\" height=\"16\" "
"viewBox=\"0 0 16 16\"> <path fill=\"currentColor\" d=\"M 9.2,2.2 V 5.0 "
"H 7.3 C 4.1,5.0 1.8,7.4 1.8,10.8 V 13.8 a 0.9,0.9 0 0 0 1.75,0.28 C "
"4.2,12.1 5.6,10.9 7.3,10.9 H 9.2 V 13.7 L 15.0,7.95 Z\"/> </svg>");
case Mark::Replied:
return QByteArray(
"<svg xmlns=\"http://www.w3.org/2000/svg\" width=\"16\" height=\"16\" "
"viewBox=\"0 0 16 16\"> <path fill=\"currentColor\" d=\"M 6.8,2.2 V 5.0 "
"H 8.7 C 11.9,5.0 14.2,7.4 14.2,10.8 V 13.8 a 0.9,0.9 0 0 1 -1.75,0.28 C "
"11.8,12.1 10.4,10.9 8.7,10.9 H 6.8 V 13.7 L 1.0,7.95 Z\"/> </svg>");
case Mark::ExpanderCollapsed:
return QByteArray(
"<svg xmlns=\"http://www.w3.org/2000/svg\" width=\"16\" height=\"16\" "
"viewBox=\"0 0 16 16\"> <path fill=\"currentColor\" d=\"M 5.38,2.38 "
"12.25,8 5.38,13.62 Z\"/> </svg>");
case Mark::ExpanderExpanded:
return QByteArray(
"<svg xmlns=\"http://www.w3.org/2000/svg\" width=\"16\" height=\"16\" "
"viewBox=\"0 0 16 16\"> <path fill=\"currentColor\" d=\"M 2.38,5.38 "
"13.62,5.38 8,12.25 Z\"/> </svg>"); }
return {};
}
namespace {
/// Key for the pixmap cache. The colour belongs in it because the mark is
/// recoloured per palette, and the ratio because a pixmap rendered for a 1x
/// screen is blurry on a 2x one.
struct CacheKey
{
Mark mark;
int width;
int height;
QRgb color;
int ratio; ///< devicePixelRatio scaled by 100, so it can be hashed.
bool operator==(const CacheKey &other) const
{
return mark == other.mark && width == other.width
&& height == other.height && color == other.color
&& ratio == other.ratio;
}
};
size_t qHash(const CacheKey &key, size_t seed = 0)
{
return qHashMulti(seed, static_cast<int>(key.mark), key.width, key.height,
key.color, key.ratio);
}
} // namespace
QPixmap pixmap(Mark mark, const QSize &size, const QColor &color,
qreal devicePixelRatio)
{
if (size.isEmpty() || !color.isValid())
return {};
static QHash<CacheKey, QPixmap> cache;
const CacheKey key{ mark, size.width(), size.height(), color.rgba(),
qRound(devicePixelRatio * 100) };
const auto cached = cache.constFind(key);
if (cached != cache.constEnd())
return *cached;
QPixmap pm(size * devicePixelRatio);
pm.setDevicePixelRatio(devicePixelRatio);
pm.fill(Qt::transparent);
{
QSvgRenderer renderer(svg(mark));
QPainter painter(&pm);
painter.setRenderHint(QPainter::Antialiasing, true);
renderer.render(&painter, QRectF(QPointF(0, 0), QSizeF(size)));
// The payloads paint with fill="currentColor", which QSvgRenderer does
// not resolve: it renders them black. SourceIn keeps the alpha the
// shape just produced and replaces the colour, which is what makes one
// asset serve both a light and a dark palette.
painter.setCompositionMode(QPainter::CompositionMode_SourceIn);
painter.fillRect(QRect(QPoint(0, 0), size), color);
}
// Unbounded in principle, bounded in practice: the marks are six, the sizes
// come from a handful of font heights, and the colours from the palette.
cache.insert(key, pm);
return pm;
}
void paint(QPainter *painter, const QRect &rect, Mark mark, const QColor &color)
{
if (!painter || rect.isEmpty())
return;
// Square, sized to the shorter side, so a mark never stretches. The rects
// CardLayout reserves are square already; the message pane's are not
// necessarily.
const int side = qMin(rect.width(), rect.height());
const QSize size(side, side);
const QPixmap pm = pixmap(mark, size, color,
painter->device()->devicePixelRatioF());
if (pm.isNull())
return;
const QPoint at(rect.left() + (rect.width() - side) / 2,
rect.top() + (rect.height() - side) / 2);
painter->drawPixmap(at, pm);
}
} // namespace Marks
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