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