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
39 /// Height of the ruler in multipes of the text height
40 static const float RulerHeight;
42 static const int MinorTickSubdivision;
44 static const int HoverArrowSize;
46 static const int Padding;
49 * The vertical offset, relative to the bottom line of the widget,
50 * where the arrows of the cursor labels end.
52 static const int BaselineOffset;
58 void clear_selection();
61 QSize sizeHint() const;
64 * The extended area that the header widget would like to be sized to.
65 * @remarks This area is the area specified by sizeHint, extended by
66 * the area to overlap the viewport.
68 QSize extended_size_hint() const;
71 void paintEvent(QPaintEvent *event);
73 void mouseMoveEvent(QMouseEvent *e);
74 void mousePressEvent(QMouseEvent *e);
75 void mouseReleaseEvent(QMouseEvent *);
76 void leaveEvent(QEvent*);
78 void mouseDoubleClickEvent(QMouseEvent *e);
80 void keyPressEvent(QKeyEvent *e);
84 * Draw a hover arrow under the cursor position.
85 * @param p The painter to draw into.
86 * @param text_height The height of a single text ascent.
88 void draw_hover_mark(QPainter &p, int text_height);
90 int calculate_text_height() const;
93 std::shared_ptr<TimeItem> mouse_down_item_;
96 void hover_point_changed();
102 #endif // PULSEVIEW_PV_VIEW_RULER_H