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 float Ruler::RulerHeight = 2.5f; // x Text Height
42 const int Ruler::MinorTickSubdivision = 4;
44 const float Ruler::HoverArrowSize = 0.5f; // x Text Height
46 Ruler::Ruler(View &parent) :
49 setMouseTracking(true);
51 connect(&view_, SIGNAL(hover_point_changed()),
52 this, SLOT(hover_point_changed()));
55 void Ruler::clear_selection()
57 const vector< shared_ptr<TimeItem> > items(view_.time_items());
63 QSize Ruler::sizeHint() const
65 const int text_height = calculate_text_height();
66 return QSize(0, RulerHeight * text_height);
69 QSize Ruler::extended_size_hint() const
72 std::vector< std::shared_ptr<TimeItem> > items(view_.time_items());
74 max_rect = max_rect.united(i->label_rect(QRect()));
75 return QSize(0, sizeHint().height() - max_rect.top() / 2 +
76 ViewItem::HighlightRadius);
79 shared_ptr<TimeItem> Ruler::get_mouse_over_item(const QPoint &pt)
81 const vector< shared_ptr<TimeItem> > items(view_.time_items());
82 for (auto i = items.rbegin(); i != items.rend(); i++)
83 if ((*i)->enabled() && (*i)->label_rect(rect()).contains(pt))
88 void Ruler::paintEvent(QPaintEvent*)
90 const int ValueMargin = 3;
93 p.setRenderHint(QPainter::Antialiasing);
95 const double tick_period = view_.tick_period();
96 const unsigned int prefix = view_.tick_prefix();
98 // Draw the tick marks
99 p.setPen(palette().color(foregroundRole()));
101 const double minor_tick_period = tick_period / MinorTickSubdivision;
102 const double first_major_division =
103 floor(view_.offset() / tick_period);
104 const double first_minor_division =
105 ceil(view_.offset() / minor_tick_period);
106 const double t0 = first_major_division * tick_period;
108 int division = (int)round(first_minor_division -
109 first_major_division * MinorTickSubdivision) - 1;
111 const int text_height = calculate_text_height();
112 const int ruler_height = RulerHeight * text_height;
113 const int major_tick_y1 = text_height + ValueMargin * 2;
114 const int minor_tick_y1 = (major_tick_y1 + ruler_height) / 2;
119 const double t = t0 + division * minor_tick_period;
120 x = (t - view_.offset()) / view_.scale();
122 if (division % MinorTickSubdivision == 0)
125 p.drawText(x, ValueMargin, 0, text_height,
126 AlignCenter | AlignTop | TextDontClip,
127 pv::util::format_time(t, prefix));
128 p.drawLine(QPointF(x, major_tick_y1),
129 QPointF(x, ruler_height));
134 p.drawLine(QPointF(x, minor_tick_y1),
135 QPointF(x, ruler_height));
140 } while (x < width());
142 // Draw the hover mark
143 draw_hover_mark(p, text_height);
145 // The cursor labels are not drawn with the arrows exactly on the
146 // bottom line of the widget, because then the selection shadow
147 // would be clipped away.
148 const QRect r = rect().adjusted(0, 0, 0, -ViewItem::HighlightRadius);
151 const vector< shared_ptr<TimeItem> > items(view_.time_items());
152 for (auto &i : items) {
153 const bool highlight = !dragging_ &&
154 i->label_rect(r).contains(mouse_point_);
155 i->paint_label(p, r, highlight);
159 void Ruler::mouseMoveEvent(QMouseEvent *e)
161 mouse_point_ = e->pos();
163 if (!(e->buttons() & Qt::LeftButton))
166 if ((e->pos() - mouse_down_point_).manhattanLength() <
167 QApplication::startDragDistance())
173 const int delta = e->pos().x() - mouse_down_point_.x();
174 const vector< shared_ptr<TimeItem> > items(view_.time_items());
175 for (auto &i : items)
177 i->set_time(view_.offset() +
178 (i->drag_point().x() + delta - 0.5) *
182 void Ruler::mousePressEvent(QMouseEvent *e)
184 if (e->buttons() & Qt::LeftButton) {
185 mouse_down_point_ = e->pos();
186 mouse_down_item_ = get_mouse_over_item(e->pos());
190 if (mouse_down_item_) {
191 mouse_down_item_->select();
192 mouse_down_item_->drag();
199 void Ruler::mouseReleaseEvent(QMouseEvent *)
201 using pv::widgets::Popup;
203 if (!dragging_ && mouse_down_item_) {
204 Popup *const p = mouse_down_item_->create_popup(&view_);
206 const QPoint arrpos(mouse_down_item_->get_x(),
207 height() - ViewItem::HighlightRadius);
208 p->set_position(mapToGlobal(arrpos), Popup::Bottom);
214 mouse_down_item_.reset();
216 const vector< shared_ptr<TimeItem> > items(view_.time_items());
217 for (auto &i : items)
221 void Ruler::leaveEvent(QEvent*)
223 mouse_point_ = QPoint(-1, -1);
227 void Ruler::mouseDoubleClickEvent(QMouseEvent *e)
229 view_.add_flag(view_.offset() + ((double)e->x() + 0.5) * view_.scale());
232 void Ruler::keyPressEvent(QKeyEvent *e)
236 if (e->key() == Qt::Key_Delete)
238 const vector< shared_ptr<TimeItem> > items(view_.time_items());
239 for (auto &i : items)
245 void Ruler::draw_hover_mark(QPainter &p, int text_height)
247 const int x = view_.hover_point().x();
252 p.setPen(QPen(Qt::NoPen));
253 p.setBrush(QBrush(palette().color(foregroundRole())));
255 const int b = RulerHeight * text_height;
256 const float hover_arrow_size = HoverArrowSize * text_height;
257 const QPointF points[] = {
259 QPointF(x - hover_arrow_size, b - hover_arrow_size),
260 QPointF(x + hover_arrow_size, b - hover_arrow_size)
262 p.drawPolygon(points, countof(points));
265 int Ruler::calculate_text_height() const
267 return QFontMetrics(font()).ascent();
270 void Ruler::hover_point_changed()