pv/views/trace/timemarker.cpp

   1 /*
   2  * This file is part of the PulseView project.
   3  *
   4  * Copyright (C) 2012 Joel Holdsworth <joel@airwebreathe.org.uk>
   5  *
   6  * This program is free software; you can redistribute it and/or modify
   7  * it under the terms of the GNU General Public License as published by
   8  * the Free Software Foundation; either version 2 of the License, or
   9  * (at your option) any later version.
  10  *
  11  * This program is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14  * GNU General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU General Public License
  17  * along with this program; if not, see <http://www.gnu.org/licenses/>.
  18  */
  19
  20 #include <algorithm>
  21 #include <cmath>
  22
  23 #include <extdef.h>
  24
  25 #include "timemarker.hpp"
  26
  27 #include "pv/widgets/timestampspinbox.hpp"
  28 #include "view.hpp"
  29
  30 #include <QApplication>
  31 #include <QFontMetrics>
  32 #include <QFormLayout>
  33 #include <QPainter>
  34
  35 #include <pv/widgets/popup.hpp>
  36
  37 using std::max;
  38 using std::min;
  39
  40 namespace pv {
  41 namespace views {
  42 namespace trace {
  43
  44 const int TimeMarker::ArrowSize = 4;
  45
  46 TimeMarker::TimeMarker(
  47         View &view, const QColor &colour, const pv::util::Timestamp& time) :
  48         TimeItem(view),
  49         colour_(colour),
  50         time_(time),
  51         value_action_(nullptr),
  52         value_widget_(nullptr),
  53         updating_value_widget_(false)
  54 {
  55 }
  56
  57 const pv::util::Timestamp& TimeMarker::time() const
  58 {
  59         return time_;
  60 }
  61
  62 void TimeMarker::set_time(const pv::util::Timestamp& time)
  63 {
  64         time_ = time;
  65
  66         if (value_widget_) {
  67                 updating_value_widget_ = true;
  68                 value_widget_->setValue(time);
  69                 updating_value_widget_ = false;
  70         }
  71
  72         view_.time_item_appearance_changed(true, true);
  73 }
  74
  75 float TimeMarker::get_x() const
  76 {
  77         // Use roundf() from cmath, std::roundf() causes Android issues (see #945).
  78         return roundf(((time_ - view_.offset()) / view_.scale()).convert_to<float>()) + 0.5f;
  79 }
  80
  81 QPoint TimeMarker::point(const QRect &rect) const
  82 {
  83         return QPoint(get_x(), rect.bottom());
  84 }
  85
  86 QRectF TimeMarker::label_rect(const QRectF &rect) const
  87 {
  88         QFontMetrics m(QApplication::font());
  89         const QSizeF text_size(
  90                 max(m.boundingRect(get_text()).size().width(), ArrowSize),
  91                 m.height());
  92         const QSizeF label_size(text_size + LabelPadding * 2);
  93         const float top = rect.height() - label_size.height() -
  94                 TimeMarker::ArrowSize - 0.5f;
  95         const float x = get_x();
  96
  97         return QRectF(QPointF(x - label_size.width() / 2, top), label_size);
  98 }
  99
 100 QRectF TimeMarker::hit_box_rect(const ViewItemPaintParams &pp) const
 101 {
 102         const float x = get_x();
 103         const float h = QFontMetrics(QApplication::font()).height();
 104         return QRectF(x - h / 2.0f, pp.top(), h, pp.height());
 105 }
 106
 107 void TimeMarker::paint_label(QPainter &p, const QRect &rect, bool hover)
 108 {
 109         if (!enabled())
 110                 return;
 111
 112         const qreal x = get_x();
 113         const QRectF r(label_rect(rect));
 114
 115         const QPointF points[] = {
 116                 r.topLeft(),
 117                 r.bottomLeft(),
 118                 QPointF(max(r.left(), x - ArrowSize), r.bottom()),
 119                 QPointF(x, rect.bottom()),
 120                 QPointF(min(r.right(), x + ArrowSize), r.bottom()),
 121                 r.bottomRight(),
 122                 r.topRight()
 123         };
 124
 125         const QPointF highlight_points[] = {
 126                 QPointF(r.left() + 1, r.top() + 1),
 127                 QPointF(r.left() + 1, r.bottom() - 1),
 128                 QPointF(max(r.left() + 1, x - ArrowSize), r.bottom() - 1),
 129                 QPointF(min(max(r.left() + 1, x), r.right() - 1),
 130                         rect.bottom() - 1),
 131                 QPointF(min(r.right() - 1, x + ArrowSize), r.bottom() - 1),
 132                 QPointF(r.right() - 1, r.bottom() - 1),
 133                 QPointF(r.right() - 1, r.top() + 1),
 134         };
 135
 136         if (selected()) {
 137                 p.setPen(highlight_pen());
 138                 p.setBrush(Qt::transparent);
 139                 p.drawPolygon(points, countof(points));
 140         }
 141
 142         p.setPen(Qt::transparent);
 143         p.setBrush(hover ? colour_.lighter() : colour_);
 144         p.drawPolygon(points, countof(points));
 145
 146         p.setPen(colour_.lighter());
 147         p.setBrush(Qt::transparent);
 148         p.drawPolygon(highlight_points, countof(highlight_points));
 149
 150         p.setPen(colour_.darker());
 151         p.setBrush(Qt::transparent);
 152         p.drawPolygon(points, countof(points));
 153
 154         p.setPen(select_text_colour(colour_));
 155         p.drawText(r, Qt::AlignCenter | Qt::AlignVCenter, get_text());
 156 }
 157
 158 void TimeMarker::paint_fore(QPainter &p, ViewItemPaintParams &pp)
 159 {
 160         if (!enabled())
 161                 return;
 162
 163         const float x = get_x();
 164         p.setPen(colour_.darker());
 165         p.drawLine(QPointF(x, pp.top()), QPointF(x, pp.bottom()));
 166 }
 167
 168 pv::widgets::Popup* TimeMarker::create_popup(QWidget *parent)
 169 {
 170         using pv::widgets::Popup;
 171
 172         Popup *const popup = new Popup(parent);
 173         popup->set_position(parent->mapToGlobal(
 174                 point(parent->rect())), Popup::Bottom);
 175
 176         QFormLayout *const form = new QFormLayout(popup);
 177         popup->setLayout(form);
 178
 179         value_widget_ = new pv::widgets::TimestampSpinBox(parent);
 180         value_widget_->setValue(time_);
 181
 182         connect(value_widget_, SIGNAL(valueChanged(const pv::util::Timestamp&)),
 183                 this, SLOT(on_value_changed(const pv::util::Timestamp&)));
 184
 185         form->addRow(tr("Time"), value_widget_);
 186
 187         return popup;
 188 }
 189
 190 void TimeMarker::on_value_changed(const pv::util::Timestamp& value)
 191 {
 192         if (!updating_value_widget_)
 193                 set_time(value);
 194 }
 195
 196 } // namespace trace
 197 } // namespace views
 198 } // namespace pv