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         updating_value_widget_(false)
  55 {
  56 }
  57
  58 const pv::util::Timestamp& TimeMarker::time() const
  59 {
  60         return time_;
  61 }
  62
  63 void TimeMarker::set_time(const pv::util::Timestamp& time)
  64 {
  65         time_ = time;
  66
  67         if (value_widget_) {
  68                 updating_value_widget_ = true;
  69                 value_widget_->setValue(view_.ruler()->get_ruler_time_from_absolute_time(time));
  70                 updating_value_widget_ = false;
  71         }
  72
  73         view_.time_item_appearance_changed(true, true);
  74 }
  75
  76 float TimeMarker::get_x() const
  77 {
  78         // Use roundf() from cmath, std::roundf() causes Android issues (see #945).
  79         return roundf(((time_ - view_.offset()) / view_.scale()).convert_to<float>()) + 0.5f;
  80 }
  81
  82 QPoint TimeMarker::drag_point(const QRect &rect) const
  83 {
  84         (void)rect;
  85
  86         return QPoint(get_x(), view_.mapFromGlobal(QCursor::pos()).y());
  87 }
  88
  89 QRectF TimeMarker::label_rect(const QRectF &rect) const
  90 {
  91         QFontMetrics m(QApplication::font());
  92         const QSizeF text_size(
  93                 max(m.boundingRect(get_text()).size().width(), ArrowSize),
  94                 m.height());
  95         const QSizeF label_size(text_size + LabelPadding * 2);
  96         const float top = rect.height() - label_size.height() -
  97                 TimeMarker::ArrowSize - 0.5f;
  98         const float x = get_x();
  99
 100         return QRectF(QPointF(x - label_size.width() / 2, top), label_size);
 101 }
 102
 103 QRectF TimeMarker::hit_box_rect(const ViewItemPaintParams &pp) const
 104 {
 105         const float x = get_x();
 106         const float h = QFontMetrics(QApplication::font()).height();
 107         return QRectF(x - h / 2.0f, pp.top(), h, pp.height());
 108 }
 109
 110 void TimeMarker::paint_label(QPainter &p, const QRect &rect, bool hover)
 111 {
 112         if (!enabled())
 113                 return;
 114
 115         const qreal x = get_x();
 116         const QRectF r(label_rect(rect));
 117
 118         const QPointF points[] = {
 119                 r.topLeft(),
 120                 r.bottomLeft(),
 121                 QPointF(max(r.left(), x - ArrowSize), r.bottom()),
 122                 QPointF(x, rect.bottom()),
 123                 QPointF(min(r.right(), x + ArrowSize), r.bottom()),
 124                 r.bottomRight(),
 125                 r.topRight()
 126         };
 127
 128         const QPointF highlight_points[] = {
 129                 QPointF(r.left() + 1, r.top() + 1),
 130                 QPointF(r.left() + 1, r.bottom() - 1),
 131                 QPointF(max(r.left() + 1, x - ArrowSize), r.bottom() - 1),
 132                 QPointF(min(max(r.left() + 1, x), r.right() - 1),
 133                         rect.bottom() - 1),
 134                 QPointF(min(r.right() - 1, x + ArrowSize), r.bottom() - 1),
 135                 QPointF(r.right() - 1, r.bottom() - 1),
 136                 QPointF(r.right() - 1, r.top() + 1),
 137         };
 138
 139         if (selected()) {
 140                 p.setPen(highlight_pen());
 141                 p.setBrush(Qt::transparent);
 142                 p.drawPolygon(points, countof(points));
 143         }
 144
 145         p.setPen(Qt::transparent);
 146         p.setBrush(hover ? color_.lighter() : color_);
 147         p.drawPolygon(points, countof(points));
 148
 149         p.setPen(color_.lighter());
 150         p.setBrush(Qt::transparent);
 151         p.drawPolygon(highlight_points, countof(highlight_points));
 152
 153         p.setPen(color_.darker());
 154         p.setBrush(Qt::transparent);
 155         p.drawPolygon(points, countof(points));
 156
 157         p.setPen(select_text_color(color_));
 158         p.drawText(r, Qt::AlignCenter | Qt::AlignVCenter, get_text());
 159 }
 160
 161 void TimeMarker::paint_fore(QPainter &p, ViewItemPaintParams &pp)
 162 {
 163         if (!enabled())
 164                 return;
 165
 166         const float x = get_x();
 167         p.setPen(color_.darker());
 168         p.drawLine(QPointF(x, pp.top()), QPointF(x, pp.bottom()));
 169 }
 170
 171 pv::widgets::Popup* TimeMarker::create_popup(QWidget *parent)
 172 {
 173         using pv::widgets::Popup;
 174
 175         Popup *const popup = new Popup(parent);
 176         popup->set_position(parent->mapToGlobal(
 177                 drag_point(parent->rect())), Popup::Bottom);
 178
 179         QFormLayout *const form = new QFormLayout(popup);
 180         popup->setLayout(form);
 181
 182         value_widget_ = new pv::widgets::TimestampSpinBox(parent);
 183         value_widget_->setValue(view_.ruler()->get_ruler_time_from_absolute_time(time_));
 184
 185         connect(value_widget_, SIGNAL(valueChanged(const pv::util::Timestamp&)),
 186                 this, SLOT(on_value_changed(const pv::util::Timestamp&)));
 187
 188         form->addRow(tr("Time"), value_widget_);
 189
 190         return popup;
 191 }
 192
 193 void TimeMarker::on_value_changed(const pv::util::Timestamp& value)
 194 {
 195         if (!updating_value_widget_)
 196                 set_time(view_.ruler()->get_absolute_time_from_ruler_time(value));
 197 }
 198
 199 } // namespace trace
 200 } // namespace views
 201 } // namespace pv