tracegroup.cpp

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/*
 * This file is part of the PulseView project.
 *
 * Copyright (C) 2013 Joel Holdsworth <joel@airwebreathe.org.uk>
 *
 * 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, see <http://www.gnu.org/licenses/>.
 */

#include <extdef.h>

#include <algorithm>
#include <cassert>

#include <QMenu>
#include <QPainter>

#include "tracegroup.hpp"

using std::any_of;
using std::pair;
using std::shared_ptr;
using std::vector;

namespace pv {
namespace views {
namespace trace {

const int TraceGroup::Padding = 8;
const int TraceGroup::Width = 12;
const int TraceGroup::LineThickness = 5;
const QColor TraceGroup::LineColor(QColor(0x55, 0x57, 0x53));

TraceGroup::~TraceGroup()
{
    owner_ = nullptr;
    clear_child_items();
}

bool TraceGroup::enabled() const
{
    return any_of(child_items().begin(), child_items().end(),
        [](const shared_ptr<ViewItem> &r) { return r->enabled(); });
}

pv::Session& TraceGroup::session()
{
    assert(owner_);
    return owner_->session();
}

const pv::Session& TraceGroup::session() const
{
    assert(owner_);
    return owner_->session();
}

View* TraceGroup::view()
{
    assert(owner_);
    return owner_->view();
}

const View* TraceGroup::view() const
{
    assert(owner_);
    return owner_->view();
}

pair<int, int> TraceGroup::v_extents() const
{
    return TraceTreeItemOwner::v_extents();
}

void TraceGroup::paint_label(QPainter &p, const QRect &rect, bool hover)
{
    const QRectF r = label_rect(rect).adjusted(
        LineThickness / 2.0, LineThickness / 2.0,
        -LineThickness / 2.0, -LineThickness / 2.0);

    // Paint the label
    const QPointF points[] = {
        r.topRight(),
        r.topLeft(),
        r.bottomLeft(),
        r.bottomRight()
    };

    if (selected()) {
        const QPen pen(highlight_pen());
        p.setPen(QPen(pen.brush(), pen.width() + LineThickness,
            Qt::SolidLine, Qt::SquareCap, Qt::RoundJoin));
        p.setBrush(Qt::transparent);
        p.drawPolyline(points, countof(points));
    }

    p.setPen(QPen(QBrush(LineColor.darker()), LineThickness,
        Qt::SolidLine, Qt::SquareCap, Qt::RoundJoin));
    p.drawPolyline(points, countof(points));
    p.setPen(QPen(QBrush(hover ? LineColor.lighter() : LineColor),
        LineThickness - 2, Qt::SolidLine, Qt::SquareCap,
        Qt::RoundJoin));
    p.drawPolyline(points, countof(points));
}

QRectF TraceGroup::label_rect(const QRectF &rect) const
{
    QRectF child_rect;
    for (const shared_ptr<ViewItem>& r : child_items())
        if (r && r->enabled())
            child_rect = child_rect.united(r->label_rect(rect));

    return QRectF(child_rect.x() - Width - Padding, child_rect.y(),
        Width, child_rect.height());
}

bool TraceGroup::pt_in_label_rect(int left, int right, const QPoint &point)
{
    (void)left;
    (void)right;
    (void)point;

    return false;
}

QMenu* TraceGroup::create_header_context_menu(QWidget *parent)
{
    QMenu *const menu = new QMenu(parent);

    QAction *const ungroup = new QAction(tr("Ungroup"), this);
#if QT_VERSION >= QT_VERSION_CHECK(6, 0, 0)
    ungroup->setShortcut(QKeySequence(Qt::CTRL | Qt::Key_U));
#else
    ungroup->setShortcut(QKeySequence(Qt::CTRL + Qt::Key_U));
#endif
    connect(ungroup, SIGNAL(triggered()), this, SLOT(on_ungroup()));
    menu->addAction(ungroup);

    return menu;
}

pv::widgets::Popup* TraceGroup::create_popup(QWidget *parent)
{
    (void)parent;
    return nullptr;
}

int TraceGroup::owner_visual_v_offset() const
{
    return owner_ ? visual_v_offset() + owner_->owner_visual_v_offset() : 0;
}

unsigned int TraceGroup::depth() const
{
    return owner_ ? owner_->depth() + 1 : 0;
}

void TraceGroup::ungroup()
{
    const vector<shared_ptr<TraceTreeItem>> items(trace_tree_child_items());
    clear_child_items();

    for (const shared_ptr<TraceTreeItem>& r : items)
        owner_->add_child_item(r);

    owner_->remove_child_item(shared_from_this());
}

void TraceGroup::on_ungroup()
{
    ungroup();
}

void TraceGroup::row_item_appearance_changed(bool label, bool content)
{
    if (owner_)
        owner_->row_item_appearance_changed(label, content);
}

void TraceGroup::extents_changed(bool horz, bool vert)
{
    if (owner_)
        owner_->extents_changed(horz, vert);
}

} // namespace trace
} // namespace views
} // namespace pv