pv/view/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
  22 #include <extdef.h>
  23
  24 #include "timemarker.hpp"
  25
  26 #include "view.hpp"
  27 #include "pv/widgets/timestampspinbox.hpp"
  28
  29 #include <QApplication>
  30 #include <QFormLayout>
  31 #include <QFontMetrics>
  32 #include <QPainter>
  33
  34 #include <pv/widgets/popup.hpp>
  35
  36 using std::max;
  37 using std::min;
  38
  39 namespace pv {
  40 namespace views {
  41 namespace TraceView {
  42
  43 const int TimeMarker::ArrowSize = 4;
  44
  45 TimeMarker::TimeMarker(
  46         View &view, const QColor &colour, const pv::util::Timestamp& time) :
  47         TimeItem(view),
  48         colour_(colour),
  49         time_(time),
  50         value_action_(nullptr),
  51         value_widget_(nullptr),
  52         updating_value_widget_(false)
  53 {
  54 }
  55
  56 const pv::util::Timestamp& TimeMarker::time() const
  57 {
  58         return time_;
  59 }
  60
  61 void TimeMarker::set_time(const pv::util::Timestamp& time)
  62 {
  63         time_ = time;
  64
  65         if (value_widget_) {
  66                 updating_value_widget_ = true;
  67                 value_widget_->setValue(time);
  68                 updating_value_widget_ = false;
  69         }
  70
  71         view_.time_item_appearance_changed(true, true);
  72 }
  73
  74 float TimeMarker::get_x() const
  75 {
  76         return ((time_ - view_.offset()) / view_.scale()).convert_to<float>();
  77 }
  78
  79 QPoint TimeMarker::point(const QRect &rect) const
  80 {
  81         return QPoint(get_x(), rect.bottom());
  82 }
  83
  84 QRectF TimeMarker::label_rect(const QRectF &rect) const
  85 {
  86         QFontMetrics m(QApplication::font());
  87         const QSizeF text_size(
  88                 max(m.boundingRect(get_text()).size().width(), ArrowSize),
  89                 m.height());
  90         const QSizeF label_size(text_size + LabelPadding * 2);
  91         const float top = rect.height() - label_size.height() -
  92                 TimeMarker::ArrowSize - 0.5f;
  93         const float x = get_x();
  94
  95         return QRectF(QPointF(x - label_size.width() / 2, top), label_size);
  96 }
  97
  98 QRectF TimeMarker::hit_box_rect(const ViewItemPaintParams &pp) const
  99 {
 100         const float x = get_x();
 101         const float h = QFontMetrics(QApplication::font()).height();
 102         return QRectF(x - h / 2.0f, pp.top(), h, pp.height());
 103 }
 104
 105 void TimeMarker::paint_label(QPainter &p, const QRect &rect, bool hover)
 106 {
 107         if (!enabled())
 108                 return;
 109
 110         const qreal x = ((time_ - view_.offset()) / view_.scale()).convert_to<qreal>();
 111         const QRectF r(label_rect(rect));
 112
 113         const QPointF points[] = {
 114                 r.topLeft(),
 115                 r.bottomLeft(),
 116                 QPointF(max(r.left(), x - ArrowSize), r.bottom()),
 117                 QPointF(x, rect.bottom()),
 118                 QPointF(min(r.right(), x + ArrowSize), r.bottom()),
 119                 r.bottomRight(),
 120                 r.topRight()
 121         };
 122
 123         const QPointF highlight_points[] = {
 124                 QPointF(r.left() + 1, r.top() + 1),
 125                 QPointF(r.left() + 1, r.bottom() - 1),
 126                 QPointF(max(r.left() + 1, x - ArrowSize), r.bottom() - 1),
 127                 QPointF(min(max(r.left() + 1, x), r.right() - 1),
 128                         rect.bottom() - 1),
 129                 QPointF(min(r.right() - 1, x + ArrowSize), r.bottom() - 1),
 130                 QPointF(r.right() - 1, r.bottom() - 1),
 131                 QPointF(r.right() - 1, r.top() + 1),
 132         };
 133
 134         if (selected()) {
 135                 p.setPen(highlight_pen());
 136                 p.setBrush(Qt::transparent);
 137                 p.drawPolygon(points, countof(points));
 138         }
 139
 140         p.setPen(Qt::transparent);
 141         p.setBrush(hover ? colour_.lighter() : colour_);
 142         p.drawPolygon(points, countof(points));
 143
 144         p.setPen(colour_.lighter());
 145         p.setBrush(Qt::transparent);
 146         p.drawPolygon(highlight_points, countof(highlight_points));
 147
 148         p.setPen(colour_.darker());
 149         p.setBrush(Qt::transparent);
 150         p.drawPolygon(points, countof(points));
 151
 152         p.setPen(select_text_colour(colour_));
 153         p.drawText(r, Qt::AlignCenter | Qt::AlignVCenter, get_text());
 154 }
 155
 156 void TimeMarker::paint_fore(QPainter &p, const ViewItemPaintParams &pp)
 157 {
 158         if (!enabled())
 159                 return;
 160
 161         const float x = get_x();
 162         p.setPen(colour_.darker());
 163         p.drawLine(QPointF(x, pp.top()), QPointF(x, pp.bottom()));
 164 }
 165
 166 pv::widgets::Popup* TimeMarker::create_popup(QWidget *parent)
 167 {
 168         using pv::widgets::Popup;
 169
 170         Popup *const popup = new Popup(parent);
 171         popup->set_position(parent->mapToGlobal(
 172                 point(parent->rect())), Popup::Bottom);
 173
 174         QFormLayout *const form = new QFormLayout(popup);
 175         popup->setLayout(form);
 176
 177         value_widget_ = new pv::widgets::TimestampSpinBox(parent);
 178         value_widget_->setValue(time_);
 179
 180         connect(value_widget_, SIGNAL(valueChanged(const pv::util::Timestamp&)),
 181                 this, SLOT(on_value_changed(const pv::util::Timestamp&)));
 182
 183         form->addRow(tr("Time"), value_widget_);
 184
 185         return popup;
 186 }
 187
 188 void TimeMarker::on_value_changed(const pv::util::Timestamp& value)
 189 {
 190         if (!updating_value_widget_)
 191                 set_time(value);
 192 }
 193
 194 } // namespace TraceView
 195 } // namespace views
 196 } // namespace pv