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 "ruler.hpp"
  29 #include "view.hpp"
  30
  31 #include <QApplication>
  32 #include <QFontMetrics>
  33 #include <QFormLayout>
  34 #include <QPainter>
  35
  36 #include <pv/widgets/popup.hpp>
  37
  38 using std::max;
  39 using std::min;
  40
  41 namespace pv {
  42 namespace views {
  43 namespace trace {
  44
  45 const int TimeMarker::ArrowSize = 4;
  46
  47 TimeMarker::TimeMarker(
  48         View &view, const QColor &color, const pv::util::Timestamp& time) :
  49         TimeItem(view),
  50         color_(color),
  51         time_(time),
  52         value_action_(nullptr),
  53         value_widget_(nullptr)
  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                 QSignalBlocker blocker(value_widget_);
  68                 value_widget_->setValue(view_.ruler()->get_ruler_time_from_absolute_time(time));
  69         }
  70
  71         view_.time_item_appearance_changed(true, true);
  72 }
  73
  74 float TimeMarker::get_x() const
  75 {
  76         // Use roundf() from cmath, std::roundf() causes Android issues (see #945).
  77         return roundf(((time_ - view_.offset()) / view_.scale()).convert_to<float>()) + 0.5f;
  78 }
  79
  80 QPoint TimeMarker::drag_point(const QRect &rect) const
  81 {
  82         (void)rect;
  83
  84         return QPoint(get_x(), view_.mapFromGlobal(QCursor::pos()).y());
  85 }
  86
  87 QRectF TimeMarker::label_rect(const QRectF &rect) const
  88 {
  89         QFontMetrics m(QApplication::font());
  90         const QSizeF text_size(
  91                 max(m.boundingRect(get_text()).size().width(), ArrowSize),
  92                 m.height());
  93         const QSizeF label_size(text_size + LabelPadding * 2);
  94         const float top = rect.height() - label_size.height() -
  95                 TimeMarker::ArrowSize - 0.5f;
  96         const float x = get_x();
  97
  98         return QRectF(QPointF(x - label_size.width() / 2, top), label_size);
  99 }
 100
 101 QRectF TimeMarker::hit_box_rect(const ViewItemPaintParams &pp) const
 102 {
 103         const float x = get_x();
 104         const float h = QFontMetrics(QApplication::font()).height();
 105         return QRectF(x - h / 2.0f, pp.top(), h, pp.height());
 106 }
 107
 108 void TimeMarker::paint_label(QPainter &p, const QRect &rect, bool hover)
 109 {
 110         if (!enabled())
 111                 return;
 112
 113         const qreal x = get_x();
 114         const QRectF r(label_rect(rect));
 115
 116         const QPointF points[] = {
 117                 r.topLeft(),
 118                 r.bottomLeft(),
 119                 QPointF(max(r.left(), x - ArrowSize), r.bottom()),
 120                 QPointF(x, rect.bottom()),
 121                 QPointF(min(r.right(), x + ArrowSize), r.bottom()),
 122                 r.bottomRight(),
 123                 r.topRight()
 124         };
 125
 126         const QPointF highlight_points[] = {
 127                 QPointF(r.left() + 1, r.top() + 1),
 128                 QPointF(r.left() + 1, r.bottom() - 1),
 129                 QPointF(max(r.left() + 1, x - ArrowSize), r.bottom() - 1),
 130                 QPointF(min(max(r.left() + 1, x), r.right() - 1),
 131                         rect.bottom() - 1),
 132                 QPointF(min(r.right() - 1, x + ArrowSize), r.bottom() - 1),
 133                 QPointF(r.right() - 1, r.bottom() - 1),
 134                 QPointF(r.right() - 1, r.top() + 1),
 135         };
 136
 137         if (selected()) {
 138                 p.setPen(highlight_pen());
 139                 p.setBrush(Qt::transparent);
 140                 p.drawPolygon(points, countof(points));
 141         }
 142
 143         p.setPen(Qt::transparent);
 144         p.setBrush(hover ? color_.lighter() : color_);
 145         p.drawPolygon(points, countof(points));
 146
 147         p.setPen(color_.lighter());
 148         p.setBrush(Qt::transparent);
 149         p.drawPolygon(highlight_points, countof(highlight_points));
 150
 151         p.setPen(color_.darker());
 152         p.setBrush(Qt::transparent);
 153         p.drawPolygon(points, countof(points));
 154
 155         p.setPen(select_text_color(color_));
 156         p.drawText(r, Qt::AlignCenter | Qt::AlignVCenter, get_text());
 157 }
 158
 159 void TimeMarker::paint_fore(QPainter &p, ViewItemPaintParams &pp)
 160 {
 161         if (!enabled())
 162                 return;
 163
 164         const float x = get_x();
 165         p.setPen(color_.darker());
 166         p.drawLine(QPointF(x, pp.top()), QPointF(x, pp.bottom()));
 167 }
 168
 169 pv::widgets::Popup* TimeMarker::create_popup(QWidget *parent)
 170 {
 171         using pv::widgets::Popup;
 172
 173         Popup *const popup = new Popup(parent);
 174         popup->set_position(parent->mapToGlobal(
 175                 drag_point(parent->rect())), Popup::Bottom);
 176
 177         QFormLayout *const form = new QFormLayout(popup);
 178         popup->setLayout(form);
 179
 180         value_widget_ = new pv::widgets::TimestampSpinBox(parent);
 181         value_widget_->setValue(view_.ruler()->get_ruler_time_from_absolute_time(time_));
 182
 183         connect(value_widget_, SIGNAL(valueChanged(const pv::util::Timestamp&)),
 184                 this, SLOT(on_value_changed(const pv::util::Timestamp&)));
 185
 186         form->addRow(tr("Time"), value_widget_);
 187
 188         return popup;
 189 }
 190
 191 void TimeMarker::on_value_changed(const pv::util::Timestamp& value)
 192 {
 193         set_time(view_.ruler()->get_absolute_time_from_ruler_time(value));
 194 }
 195
 196 } // namespace trace
 197 } // namespace views
 198 } // namespace pv