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
21 #ifndef PULSEVIEW_PV_VIEW_RULER_H
22 #define PULSEVIEW_PV_VIEW_RULER_H
26 #include "marginwidget.hpp"
33 class Ruler : public MarginWidget
38 static const int RulerHeight;
39 static const int MinorTickSubdivision;
41 static const int HoverArrowSize;
43 static const int Padding;
46 * The vertical offset, relative to the bottom line of the widget,
47 * where the arrows of the cursor labels end.
49 static const int BaselineOffset;
55 void clear_selection();
58 QSize sizeHint() const;
61 * The extended area that the header widget would like to be sized to.
62 * @remarks This area is the area specified by sizeHint, extended by
63 * the area to overlap the viewport.
65 QSize extended_size_hint() const;
68 void paintEvent(QPaintEvent *event);
70 void mouseMoveEvent(QMouseEvent *e);
71 void mousePressEvent(QMouseEvent *e);
72 void mouseReleaseEvent(QMouseEvent *);
73 void leaveEvent(QEvent*);
75 void mouseDoubleClickEvent(QMouseEvent *e);
77 void keyPressEvent(QKeyEvent *e);
81 * Draw a hover arrow under the cursor position.
83 void draw_hover_mark(QPainter &p);
85 int calculate_text_height() const;
88 std::shared_ptr<TimeItem> mouse_down_item_;
91 void hover_point_changed();
97 #endif // PULSEVIEW_PV_VIEW_RULER_H