2 * This file is part of the PulseView project.
4 * Copyright (C) 2012 Joel Holdsworth <joel@airwebreathe.org.uk>
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.
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.
16 * You should have received a copy of the GNU General Public License
17 * along with this program; if not, write to the Free Software
18 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
23 #include <QApplication>
24 #include <QFontMetrics>
25 #include <QMouseEvent>
30 #include <pv/util.hpp>
31 #include <pv/widgets/popup.hpp>
35 using std::shared_ptr;
41 const int Ruler::RulerHeight = 30;
42 const int Ruler::MinorTickSubdivision = 4;
44 const int Ruler::HoverArrowSize = 5;
46 const int Ruler::Padding = 20;
47 const int Ruler::BaselineOffset = 5;
49 Ruler::Ruler(View &parent) :
51 text_height_(calculate_text_height())
53 setMouseTracking(true);
55 connect(&view_, SIGNAL(hover_point_changed()),
56 this, SLOT(hover_point_changed()));
59 void Ruler::clear_selection()
61 const vector< shared_ptr<TimeItem> > items(view_.time_items());
67 QSize Ruler::sizeHint() const
69 return QSize(0, RulerHeight);
72 QSize Ruler::extended_size_hint() const
74 return QSize(0, RulerHeight +
75 (text_height_ + Padding + BaselineOffset) / 2);
78 void Ruler::paintEvent(QPaintEvent*)
80 const int ValueMargin = 3;
83 p.setRenderHint(QPainter::Antialiasing);
85 const double tick_period = view_.tick_period();
86 const unsigned int prefix = view_.tick_prefix();
88 // Draw the tick marks
89 p.setPen(palette().color(foregroundRole()));
91 const double minor_tick_period = tick_period / MinorTickSubdivision;
92 const double first_major_division =
93 floor(view_.offset() / tick_period);
94 const double first_minor_division =
95 ceil(view_.offset() / minor_tick_period);
96 const double t0 = first_major_division * tick_period;
98 int division = (int)round(first_minor_division -
99 first_major_division * MinorTickSubdivision) - 1;
101 const int major_tick_y1 = text_height_ + ValueMargin * 2;
102 const int tick_y2 = RulerHeight;
103 const int minor_tick_y1 = (major_tick_y1 + tick_y2) / 2;
108 const double t = t0 + division * minor_tick_period;
109 x = (t - view_.offset()) / view_.scale();
111 if (division % MinorTickSubdivision == 0)
114 p.drawText(x, ValueMargin, 0, text_height_,
115 AlignCenter | AlignTop | TextDontClip,
116 pv::util::format_time(t, prefix));
117 p.drawLine(QPointF(x, major_tick_y1),
118 QPointF(x, tick_y2));
123 p.drawLine(QPointF(x, minor_tick_y1),
124 QPointF(x, tick_y2));
129 } while (x < width());
131 // Draw the hover mark
134 // The cursor labels are not drawn with the arrows exactly on the
135 // bottom line of the widget, because then the selection shadow
136 // would be clipped away.
137 const QRect r = rect().adjusted(0, 0, 0, -BaselineOffset);
140 const vector< shared_ptr<TimeItem> > items(view_.time_items());
141 for (auto &i : items)
142 i->paint_label(p, r);
145 void Ruler::mouseMoveEvent(QMouseEvent *e)
147 mouse_point_ = e->pos();
149 if (!(e->buttons() & Qt::LeftButton))
152 if ((e->pos() - mouse_down_point_).manhattanLength() <
153 QApplication::startDragDistance())
159 const int delta = e->pos().x() - mouse_down_point_.x();
160 const vector< shared_ptr<TimeItem> > items(view_.time_items());
161 for (auto &i : items)
163 i->set_time(view_.offset() +
164 (i->drag_point().x() + delta - 0.5) *
168 void Ruler::mousePressEvent(QMouseEvent *e)
170 if (e->buttons() & Qt::LeftButton) {
171 mouse_down_point_ = e->pos();
173 mouse_down_item_.reset();
177 const vector< shared_ptr<TimeItem> > items(view_.time_items());
178 for (auto i = items.rbegin(); i != items.rend(); i++)
179 if ((*i)->label_rect(rect()).contains(e->pos())) {
180 mouse_down_item_ = (*i);
184 if (mouse_down_item_) {
185 mouse_down_item_->select();
186 mouse_down_item_->drag();
193 void Ruler::mouseReleaseEvent(QMouseEvent *)
195 using pv::widgets::Popup;
197 if (!dragging_ && mouse_down_item_) {
198 Popup *const p = mouse_down_item_->create_popup(&view_);
200 const QPoint arrpos(mouse_down_item_->get_x(),
201 height() - BaselineOffset);
202 p->set_position(mapToGlobal(arrpos), Popup::Bottom);
208 mouse_down_item_.reset();
210 const vector< shared_ptr<TimeItem> > items(view_.time_items());
211 for (auto &i : items)
215 void Ruler::leaveEvent(QEvent*)
217 mouse_point_ = QPoint(-1, -1);
221 void Ruler::mouseDoubleClickEvent(QMouseEvent *e)
223 view_.add_flag(view_.offset() + ((double)e->x() + 0.5) * view_.scale());
226 void Ruler::keyPressEvent(QKeyEvent *e)
230 if (e->key() == Qt::Key_Delete)
232 const vector< shared_ptr<TimeItem> > items(view_.time_items());
233 for (auto &i : items)
239 void Ruler::draw_hover_mark(QPainter &p)
241 const int x = view_.hover_point().x();
246 p.setPen(QPen(Qt::NoPen));
247 p.setBrush(QBrush(palette().color(foregroundRole())));
249 const int b = RulerHeight;
250 const QPointF points[] = {
252 QPointF(x - HoverArrowSize, b - HoverArrowSize),
253 QPointF(x + HoverArrowSize, b - HoverArrowSize)
255 p.drawPolygon(points, countof(points));
258 int Ruler::calculate_text_height()
260 QFontMetrics fm(font());
261 return fm.boundingRect(0, 0, INT_MAX, INT_MAX,
262 Qt::AlignLeft | Qt::AlignTop, "8").height();
265 void Ruler::hover_point_changed()