[pulseview.git] / pv / views / trace / ruler.cpp

/*
 * This file is part of the PulseView project.
 *
 * Copyright (C) 2012 Joel Holdsworth <joel@airwebreathe.org.uk>
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, see <http://www.gnu.org/licenses/>.
 */

#include <extdef.h>

#include <QApplication>
#include <QFontMetrics>
#include <QMenu>
#include <QMouseEvent>

#include <pv/globalsettings.hpp>

#include "ruler.hpp"
#include "view.hpp"

using namespace Qt;

using std::function;
using std::max;
using std::min;
using std::shared_ptr;
using std::vector;

namespace pv {
namespace views {
namespace trace {

const float Ruler::RulerHeight = 2.5f; // x Text Height

const float Ruler::HoverArrowSize = 0.5f; // x Text Height

Ruler::Ruler(View &parent) :
	MarginWidget(parent)
{
	setMouseTracking(true);

	connect(&view_, SIGNAL(hover_point_changed(const QWidget*, QPoint)),
		this, SLOT(on_hover_point_changed(const QWidget*, QPoint)));
	connect(&view_, SIGNAL(offset_changed()),
		this, SLOT(invalidate_tick_position_cache()));
	connect(&view_, SIGNAL(scale_changed()),
		this, SLOT(invalidate_tick_position_cache()));
	connect(&view_, SIGNAL(tick_prefix_changed()),
		this, SLOT(invalidate_tick_position_cache()));
	connect(&view_, SIGNAL(tick_precision_changed()),
		this, SLOT(invalidate_tick_position_cache()));
	connect(&view_, SIGNAL(tick_period_changed()),
		this, SLOT(invalidate_tick_position_cache()));
	connect(&view_, SIGNAL(time_unit_changed()),
		this, SLOT(invalidate_tick_position_cache()));
}

QSize Ruler::sizeHint() const
{
	const int text_height = calculate_text_height();
	return QSize(0, RulerHeight * text_height);
}

QSize Ruler::extended_size_hint() const
{
	QRectF max_rect;
	vector< shared_ptr<TimeItem> > items(view_.time_items());
	for (auto &i : items)
		max_rect = max_rect.united(i->label_rect(QRect()));
	return QSize(0, sizeHint().height() - max_rect.top() / 2 +
		ViewItem::HighlightRadius);
}

QString Ruler::format_time_with_distance(
	const pv::util::Timestamp& distance,
	const pv::util::Timestamp& t,
	pv::util::SIPrefix prefix,
	pv::util::TimeUnit unit,
	unsigned precision,
	bool sign)
{
	const unsigned limit = 60;

	if (t.is_zero())
		return "0";

	// If we have to use samples then we have no alternative formats
	if (unit == pv::util::TimeUnit::Samples)
		return pv::util::format_time_si_adjusted(t, prefix, precision, "sa", sign);

	QString unit_string;
	if (unit == pv::util::TimeUnit::Time)
		unit_string = "s";
	// Note: In case of pv::util::TimeUnit::None, unit_string remains empty

	// View zoomed way out -> low precision (0), big distance (>=60s)
	// -> DD:HH:MM
	if ((precision == 0) && (distance >= limit))
		return pv::util::format_time_minutes(t, 0, sign);

	// View in "normal" range -> medium precision, medium step size
	// -> HH:MM:SS.mmm... or xxxx (si unit) if less than limit seconds
	// View zoomed way in -> high precision (>3), low step size (<1s)
	// -> HH:MM:SS.mmm... or xxxx (si unit) if less than limit seconds
	if (abs(t) < limit)
		return pv::util::format_time_si_adjusted(t, prefix, precision, unit_string, sign);
	else
		return pv::util::format_time_minutes(t, precision, sign);
}

pv::util::Timestamp Ruler::get_absolute_time_from_x_pos(uint32_t x) const
{
	return view_.offset() + ((double)x + 0.5) * view_.scale();
}

pv::util::Timestamp Ruler::get_ruler_time_from_x_pos(uint32_t x) const
{
	return view_.ruler_offset() + ((double)x + 0.5) * view_.scale();
}

void Ruler::contextMenuEvent(QContextMenuEvent *event)
{
	MarginWidget::contextMenuEvent(event);

	// Don't show a context menu if the MarginWidget found a widget that shows one
	if (event->isAccepted())
		return;

	context_menu_x_pos_ = event->pos().x();

	QMenu *const menu = new QMenu(this);

	QAction *const create_marker = new QAction(tr("Create marker here"), this);
	connect(create_marker, SIGNAL(triggered()), this, SLOT(on_createMarker()));
	menu->addAction(create_marker);

	QAction *const set_zero_position = new QAction(tr("Set as zero point"), this);
	connect(set_zero_position, SIGNAL(triggered()), this, SLOT(on_setZeroPosition()));
	menu->addAction(set_zero_position);

	QAction *const toggle_hover_marker = new QAction(this);
	connect(toggle_hover_marker, SIGNAL(triggered()), this, SLOT(on_toggleHoverMarker()));
	menu->addAction(toggle_hover_marker);

	GlobalSettings settings;
	const bool hover_marker_shown =
		settings.value(GlobalSettings::Key_View_ShowHoverMarker).toBool();
	toggle_hover_marker->setText(hover_marker_shown ?
		tr("Disable mouse hover marker") : tr("Enable mouse hover marker"));

	event->setAccepted(true);
	menu->popup(event->globalPos());
}

void Ruler::resizeEvent(QResizeEvent*)
{
	// the tick calculation depends on the width of this widget
	invalidate_tick_position_cache();
}

vector< shared_ptr<ViewItem> > Ruler::items()
{
	const vector< shared_ptr<TimeItem> > time_items(view_.time_items());
	return vector< shared_ptr<ViewItem> >(
		time_items.begin(), time_items.end());
}

shared_ptr<ViewItem> Ruler::get_mouse_over_item(const QPoint &pt)
{
	const vector< shared_ptr<TimeItem> > items(view_.time_items());
	for (auto i = items.rbegin(); i != items.rend(); i++)
		if ((*i)->enabled() && (*i)->label_rect(rect()).contains(pt))
			return *i;
	return nullptr;
}

void Ruler::mouseDoubleClickEvent(QMouseEvent *event)
{
	view_.add_flag(get_ruler_time_from_x_pos(event->x()));
}

void Ruler::paintEvent(QPaintEvent*)
{
	if (!tick_position_cache_) {
		auto ffunc = [this](const pv::util::Timestamp& t) {
			return format_time_with_distance(
				this->view_.tick_period(),
				t,
				this->view_.tick_prefix(),
				this->view_.time_unit(),
				this->view_.tick_precision());
		};

		tick_position_cache_ = calculate_tick_positions(
			view_.tick_period(),
			view_.ruler_offset(),
			view_.scale(),
			width(),
			view_.minor_tick_count(),
			ffunc);
	}

	const int ValueMargin = 3;

	const int text_height = calculate_text_height();
	const int ruler_height = RulerHeight * text_height;
	const int major_tick_y1 = text_height + ValueMargin * 2;
	const int minor_tick_y1 = (major_tick_y1 + ruler_height) / 2;

	QPainter p(this);

	// Draw the tick marks
	p.setPen(palette().color(foregroundRole()));

	for (const auto& tick: tick_position_cache_->major) {
		const int leftedge = 0;
		const int rightedge = width();
		const int x_tick = tick.first;
		if ((x_tick > leftedge) && (x_tick < rightedge)) {
			const int x_left_bound = QFontMetrics(font()).width(tick.second) / 2;
			const int x_right_bound = rightedge - x_left_bound;
			const int x_legend = min(max(x_tick, x_left_bound), x_right_bound);
			p.drawText(x_legend, ValueMargin, 0, text_height,
				AlignCenter | AlignTop | TextDontClip, tick.second);
			p.drawLine(QPointF(x_tick, major_tick_y1),
			QPointF(tick.first, ruler_height));
		}
	}

	for (const auto& tick: tick_position_cache_->minor) {
		p.drawLine(QPointF(tick, minor_tick_y1),
				QPointF(tick, ruler_height));
	}

	// Draw the hover mark
	draw_hover_mark(p, text_height);

	p.setRenderHint(QPainter::Antialiasing);

	// The cursor labels are not drawn with the arrows exactly on the
	// bottom line of the widget, because then the selection shadow
	// would be clipped away.
	const QRect r = rect().adjusted(0, 0, 0, -ViewItem::HighlightRadius);

	// Draw the items
	const vector< shared_ptr<TimeItem> > items(view_.time_items());
	for (auto &i : items) {
		const bool highlight = !item_dragging_ &&
			i->label_rect(r).contains(mouse_point_);
		i->paint_label(p, r, highlight);
	}
}

void Ruler::draw_hover_mark(QPainter &p, int text_height)
{
	const int x = view_.hover_point().x();

	if (x == -1)
		return;

	p.setPen(QPen(Qt::NoPen));
	p.setBrush(QBrush(palette().color(foregroundRole())));

	const int b = RulerHeight * text_height;
	const float hover_arrow_size = HoverArrowSize * text_height;
	const QPointF points[] = {
		QPointF(x, b),
		QPointF(x - hover_arrow_size, b - hover_arrow_size),
		QPointF(x + hover_arrow_size, b - hover_arrow_size)
	};
	p.drawPolygon(points, countof(points));
}

int Ruler::calculate_text_height() const
{
	return QFontMetrics(font()).ascent();
}

TickPositions Ruler::calculate_tick_positions(
	const pv::util::Timestamp& major_period,
	const pv::util::Timestamp& offset,
	const double scale,
	const int width,
	const unsigned int minor_tick_count,
	function<QString(const pv::util::Timestamp&)> format_function)
{
	TickPositions tp;

	const pv::util::Timestamp minor_period = major_period / minor_tick_count;
	const pv::util::Timestamp first_major_division = floor(offset / major_period);
	const pv::util::Timestamp first_minor_division = ceil(offset / minor_period);
	const pv::util::Timestamp t0 = first_major_division * major_period;

	int division = (round(first_minor_division -
		first_major_division * minor_tick_count)).convert_to<int>() - 1;

	double x;

	do {
		pv::util::Timestamp t = t0 + division * minor_period;
		x = ((t - offset) / scale).convert_to<double>();

		if (division % minor_tick_count == 0) {
			// Recalculate 't' without using 'minor_period' which is a fraction
			t = t0 + division / minor_tick_count * major_period;
			tp.major.emplace_back(x, format_function(t));
		} else {
			tp.minor.emplace_back(x);
		}

		division++;
	} while (x < width);

	return tp;
}

void Ruler::on_hover_point_changed(const QWidget* widget, const QPoint &hp)
{
	(void)widget;
	(void)hp;

	update();
}

void Ruler::invalidate_tick_position_cache()
{
	tick_position_cache_ = boost::none;
}

void Ruler::on_createMarker()
{
	view_.add_flag(get_absolute_time_from_x_pos(mouse_down_point_.x()));
}

void Ruler::on_setZeroPosition()
{
	view_.set_zero_position(get_absolute_time_from_x_pos(mouse_down_point_.x()));
}

void Ruler::on_toggleHoverMarker()
{
	GlobalSettings settings;
	const bool state = settings.value(GlobalSettings::Key_View_ShowHoverMarker).toBool();
	settings.setValue(GlobalSettings::Key_View_ShowHoverMarker, !state);
}

} // namespace trace
} // namespace views
} // namespace pv
Commit	Line	Data
	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 <extdef.h>
	21
	22	#include <QApplication>
	23	#include <QFontMetrics>
	24	#include <QMenu>
	25	#include <QMouseEvent>
	26
	27	#include <pv/globalsettings.hpp>
	28
	29	#include "ruler.hpp"
	30	#include "view.hpp"
	31
	32	using namespace Qt;
	33
	34	using std::function;
	35	using std::max;
	36	using std::min;
	37	using std::shared_ptr;
	38	using std::vector;
	39
	40	namespace pv {
	41	namespace views {
	42	namespace trace {
	43
	44	const float Ruler::RulerHeight = 2.5f; // x Text Height
	45
	46	const float Ruler::HoverArrowSize = 0.5f; // x Text Height
	47
	48	Ruler::Ruler(View &parent) :
	49	MarginWidget(parent)
	50	{
	51	setMouseTracking(true);
	52
	53	connect(&view_, SIGNAL(hover_point_changed(const QWidget*, QPoint)),
	54	this, SLOT(on_hover_point_changed(const QWidget*, QPoint)));
	55	connect(&view_, SIGNAL(offset_changed()),
	56	this, SLOT(invalidate_tick_position_cache()));
	57	connect(&view_, SIGNAL(scale_changed()),
	58	this, SLOT(invalidate_tick_position_cache()));
	59	connect(&view_, SIGNAL(tick_prefix_changed()),
	60	this, SLOT(invalidate_tick_position_cache()));
	61	connect(&view_, SIGNAL(tick_precision_changed()),
	62	this, SLOT(invalidate_tick_position_cache()));
	63	connect(&view_, SIGNAL(tick_period_changed()),
	64	this, SLOT(invalidate_tick_position_cache()));
	65	connect(&view_, SIGNAL(time_unit_changed()),
	66	this, SLOT(invalidate_tick_position_cache()));
	67	}
	68
	69	QSize Ruler::sizeHint() const
	70	{
	71	const int text_height = calculate_text_height();
	72	return QSize(0, RulerHeight * text_height);
	73	}
	74
	75	QSize Ruler::extended_size_hint() const
	76	{
	77	QRectF max_rect;
	78	vector< shared_ptr<TimeItem> > items(view_.time_items());
	79	for (auto &i : items)
	80	max_rect = max_rect.united(i->label_rect(QRect()));
	81	return QSize(0, sizeHint().height() - max_rect.top() / 2 +
	82	ViewItem::HighlightRadius);
	83	}
	84
	85	QString Ruler::format_time_with_distance(
	86	const pv::util::Timestamp& distance,
	87	const pv::util::Timestamp& t,
	88	pv::util::SIPrefix prefix,
	89	pv::util::TimeUnit unit,
	90	unsigned precision,
	91	bool sign)
	92	{
	93	const unsigned limit = 60;
	94
	95	if (t.is_zero())
	96	return "0";
	97
	98	// If we have to use samples then we have no alternative formats
	99	if (unit == pv::util::TimeUnit::Samples)
	100	return pv::util::format_time_si_adjusted(t, prefix, precision, "sa", sign);
	101
	102	QString unit_string;
	103	if (unit == pv::util::TimeUnit::Time)
	104	unit_string = "s";
	105	// Note: In case of pv::util::TimeUnit::None, unit_string remains empty
	106
	107	// View zoomed way out -> low precision (0), big distance (>=60s)
	108	// -> DD:HH:MM
	109	if ((precision == 0) && (distance >= limit))
	110	return pv::util::format_time_minutes(t, 0, sign);
	111
	112	// View in "normal" range -> medium precision, medium step size
	113	// -> HH:MM:SS.mmm... or xxxx (si unit) if less than limit seconds
	114	// View zoomed way in -> high precision (>3), low step size (<1s)
	115	// -> HH:MM:SS.mmm... or xxxx (si unit) if less than limit seconds
	116	if (abs(t) < limit)
	117	return pv::util::format_time_si_adjusted(t, prefix, precision, unit_string, sign);
	118	else
	119	return pv::util::format_time_minutes(t, precision, sign);
	120	}
	121
	122	pv::util::Timestamp Ruler::get_absolute_time_from_x_pos(uint32_t x) const
	123	{
	124	return view_.offset() + ((double)x + 0.5) * view_.scale();
	125	}
	126
	127	pv::util::Timestamp Ruler::get_ruler_time_from_x_pos(uint32_t x) const
	128	{
	129	return view_.ruler_offset() + ((double)x + 0.5) * view_.scale();
	130	}
	131
	132	void Ruler::contextMenuEvent(QContextMenuEvent *event)
	133	{
	134	MarginWidget::contextMenuEvent(event);
	135
	136	// Don't show a context menu if the MarginWidget found a widget that shows one
	137	if (event->isAccepted())
	138	return;
	139
	140	context_menu_x_pos_ = event->pos().x();
	141
	142	QMenu *const menu = new QMenu(this);
	143
	144	QAction *const create_marker = new QAction(tr("Create marker here"), this);
	145	connect(create_marker, SIGNAL(triggered()), this, SLOT(on_createMarker()));
	146	menu->addAction(create_marker);
	147
	148	QAction *const set_zero_position = new QAction(tr("Set as zero point"), this);
	149	connect(set_zero_position, SIGNAL(triggered()), this, SLOT(on_setZeroPosition()));
	150	menu->addAction(set_zero_position);
	151
	152	QAction *const toggle_hover_marker = new QAction(this);
	153	connect(toggle_hover_marker, SIGNAL(triggered()), this, SLOT(on_toggleHoverMarker()));
	154	menu->addAction(toggle_hover_marker);
	155
	156	GlobalSettings settings;
	157	const bool hover_marker_shown =
	158	settings.value(GlobalSettings::Key_View_ShowHoverMarker).toBool();
	159	toggle_hover_marker->setText(hover_marker_shown ?
	160	tr("Disable mouse hover marker") : tr("Enable mouse hover marker"));
	161
	162	event->setAccepted(true);
	163	menu->popup(event->globalPos());
	164	}
	165
	166	void Ruler::resizeEvent(QResizeEvent*)
	167	{
	168	// the tick calculation depends on the width of this widget
	169	invalidate_tick_position_cache();
	170	}
	171
	172	vector< shared_ptr<ViewItem> > Ruler::items()
	173	{
	174	const vector< shared_ptr<TimeItem> > time_items(view_.time_items());
	175	return vector< shared_ptr<ViewItem> >(
	176	time_items.begin(), time_items.end());
	177	}
	178
	179	shared_ptr<ViewItem> Ruler::get_mouse_over_item(const QPoint &pt)
	180	{
	181	const vector< shared_ptr<TimeItem> > items(view_.time_items());
	182	for (auto i = items.rbegin(); i != items.rend(); i++)
	183	if ((i)->enabled() && (i)->label_rect(rect()).contains(pt))
	184	return *i;
	185	return nullptr;
	186	}
	187
	188	void Ruler::mouseDoubleClickEvent(QMouseEvent *event)
	189	{
	190	view_.add_flag(get_ruler_time_from_x_pos(event->x()));
	191	}
	192
	193	void Ruler::paintEvent(QPaintEvent*)
	194	{
	195	if (!tick_position_cache_) {
	196	auto ffunc = [this](const pv::util::Timestamp& t) {
	197	return format_time_with_distance(
	198	this->view_.tick_period(),
	199	t,
	200	this->view_.tick_prefix(),
	201	this->view_.time_unit(),
	202	this->view_.tick_precision());
	203	};
	204
	205	tick_position_cache_ = calculate_tick_positions(
	206	view_.tick_period(),
	207	view_.ruler_offset(),
	208	view_.scale(),
	209	width(),
	210	view_.minor_tick_count(),
	211	ffunc);
	212	}
	213
	214	const int ValueMargin = 3;
	215
	216	const int text_height = calculate_text_height();
	217	const int ruler_height = RulerHeight * text_height;
	218	const int major_tick_y1 = text_height + ValueMargin * 2;
	219	const int minor_tick_y1 = (major_tick_y1 + ruler_height) / 2;
	220
	221	QPainter p(this);
	222
	223	// Draw the tick marks
	224	p.setPen(palette().color(foregroundRole()));
	225
	226	for (const auto& tick: tick_position_cache_->major) {
	227	const int leftedge = 0;
	228	const int rightedge = width();
	229	const int x_tick = tick.first;
	230	if ((x_tick > leftedge) && (x_tick < rightedge)) {
	231	const int x_left_bound = QFontMetrics(font()).width(tick.second) / 2;
	232	const int x_right_bound = rightedge - x_left_bound;
	233	const int x_legend = min(max(x_tick, x_left_bound), x_right_bound);
	234	p.drawText(x_legend, ValueMargin, 0, text_height,
	235	AlignCenter \| AlignTop \| TextDontClip, tick.second);
	236	p.drawLine(QPointF(x_tick, major_tick_y1),
	237	QPointF(tick.first, ruler_height));
	238	}
	239	}
	240
	241	for (const auto& tick: tick_position_cache_->minor) {
	242	p.drawLine(QPointF(tick, minor_tick_y1),
	243	QPointF(tick, ruler_height));
	244	}
	245
	246	// Draw the hover mark
	247	draw_hover_mark(p, text_height);
	248
	249	p.setRenderHint(QPainter::Antialiasing);
	250
	251	// The cursor labels are not drawn with the arrows exactly on the
	252	// bottom line of the widget, because then the selection shadow
	253	// would be clipped away.
	254	const QRect r = rect().adjusted(0, 0, 0, -ViewItem::HighlightRadius);
	255
	256	// Draw the items
	257	const vector< shared_ptr<TimeItem> > items(view_.time_items());
	258	for (auto &i : items) {
	259	const bool highlight = !item_dragging_ &&
	260	i->label_rect(r).contains(mouse_point_);
	261	i->paint_label(p, r, highlight);
	262	}
	263	}
	264
	265	void Ruler::draw_hover_mark(QPainter &p, int text_height)
	266	{
	267	const int x = view_.hover_point().x();
	268
	269	if (x == -1)
	270	return;
	271
	272	p.setPen(QPen(Qt::NoPen));
	273	p.setBrush(QBrush(palette().color(foregroundRole())));
	274
	275	const int b = RulerHeight * text_height;
	276	const float hover_arrow_size = HoverArrowSize * text_height;
	277	const QPointF points[] = {
	278	QPointF(x, b),
	279	QPointF(x - hover_arrow_size, b - hover_arrow_size),
	280	QPointF(x + hover_arrow_size, b - hover_arrow_size)
	281	};
	282	p.drawPolygon(points, countof(points));
	283	}
	284
	285	int Ruler::calculate_text_height() const
	286	{
	287	return QFontMetrics(font()).ascent();
	288	}
	289
	290	TickPositions Ruler::calculate_tick_positions(
	291	const pv::util::Timestamp& major_period,
	292	const pv::util::Timestamp& offset,
	293	const double scale,
	294	const int width,
	295	const unsigned int minor_tick_count,
	296	function<QString(const pv::util::Timestamp&)> format_function)
	297	{
	298	TickPositions tp;
	299
	300	const pv::util::Timestamp minor_period = major_period / minor_tick_count;
	301	const pv::util::Timestamp first_major_division = floor(offset / major_period);
	302	const pv::util::Timestamp first_minor_division = ceil(offset / minor_period);
	303	const pv::util::Timestamp t0 = first_major_division * major_period;
	304
	305	int division = (round(first_minor_division -
	306	first_major_division * minor_tick_count)).convert_to<int>() - 1;
	307
	308	double x;
	309
	310	do {
	311	pv::util::Timestamp t = t0 + division * minor_period;
	312	x = ((t - offset) / scale).convert_to<double>();
	313
	314	if (division % minor_tick_count == 0) {
	315	// Recalculate 't' without using 'minor_period' which is a fraction
	316	t = t0 + division / minor_tick_count * major_period;
	317	tp.major.emplace_back(x, format_function(t));
	318	} else {
	319	tp.minor.emplace_back(x);
	320	}
	321
	322	division++;
	323	} while (x < width);
	324
	325	return tp;
	326	}
	327
	328	void Ruler::on_hover_point_changed(const QWidget* widget, const QPoint &hp)
	329	{
	330	(void)widget;
	331	(void)hp;
	332
	333	update();
	334	}
	335
	336	void Ruler::invalidate_tick_position_cache()
	337	{
	338	tick_position_cache_ = boost::none;
	339	}
	340
	341	void Ruler::on_createMarker()
	342	{
	343	view_.add_flag(get_absolute_time_from_x_pos(mouse_down_point_.x()));
	344	}
	345
	346	void Ruler::on_setZeroPosition()
	347	{
	348	view_.set_zero_position(get_absolute_time_from_x_pos(mouse_down_point_.x()));
	349	}
	350
	351	void Ruler::on_toggleHoverMarker()
	352	{
	353	GlobalSettings settings;
	354	const bool state = settings.value(GlobalSettings::Key_View_ShowHoverMarker).toBool();
	355	settings.setValue(GlobalSettings::Key_View_ShowHoverMarker, !state);
	356	}
	357
	358	} // namespace trace
	359	} // namespace views
	360	} // namespace pv