*/
#include "ruler.h"
+
+#include "cursor.h"
#include "view.h"
+#include "viewport.h"
#include <extdef.h>
#include <assert.h>
#include <math.h>
+#include <limits.h>
+#include <QApplication>
+#include <QMouseEvent>
#include <QPainter>
#include <QTextStream>
+#include <pv/widgets/popup.h>
+
+using namespace boost;
+using namespace std;
+
namespace pv {
namespace view {
{"f", "p", "n", QChar(0x03BC), "m", "", "k", "M", "G"};
const int Ruler::FirstSIPrefixPower = -15;
+const int Ruler::HoverArrowSize = 5;
+
Ruler::Ruler(View &parent) :
- QWidget(&parent),
- _view(parent)
+ MarginWidget(parent),
+ _dragging(false)
{
+ setMouseTracking(true);
+
+ connect(&_view, SIGNAL(hover_point_changed()),
+ this, SLOT(hover_point_changed()));
}
-void Ruler::paintEvent(QPaintEvent *event)
+void Ruler::clear_selection()
{
- QPainter p(this);
+ CursorPair &cursors = _view.cursors();
+ cursors.first()->select(false);
+ cursors.second()->select(false);
+ update();
+}
- const double MinSpacing = 80;
+QString Ruler::format_time(double t, unsigned int prefix,
+ unsigned int precision)
+{
+ const double multiplier = pow(10.0,
+ - prefix * 3 - FirstSIPrefixPower);
- const double min_period = _view.scale() * MinSpacing;
+ QString s;
+ QTextStream ts(&s);
+ ts.setRealNumberPrecision(precision);
+ ts << fixed << forcesign << (t * multiplier) <<
+ SIPrefixes[prefix] << "s";
+ return s;
+}
+
+void Ruler::paintEvent(QPaintEvent*)
+{
+ using namespace Qt;
- const int order = (int)floorf(log10f(min_period));
- const double order_decimal = pow(10, order);
+ const double SpacingIncrement = 32.0f;
+ const double MinValueSpacing = 32.0f;
+ const int ValueMargin = 3;
- int unit = 0;
- double tick_period = 0.0f;
+ QPainter p(this);
+ p.setRenderHint(QPainter::Antialiasing);
+ double min_width = SpacingIncrement, typical_width;
+ double tick_period;
+ unsigned int prefix;
+
+ // Find tick spacing, and number formatting that does not cause
+ // value to collide.
do
{
- tick_period = order_decimal * ScaleUnits[unit++];
- } while(tick_period < min_period && unit < countof(ScaleUnits));
+ const double min_period = _view.scale() * min_width;
+
+ const int order = (int)floorf(log10f(min_period));
+ const double order_decimal = pow(10, order);
+
+ unsigned int unit = 0;
- const int prefix = (order - FirstSIPrefixPower) / 3;
- assert(prefix >= 0);
- assert(prefix < countof(SIPrefixes));
+ do
+ {
+ tick_period = order_decimal * ScaleUnits[unit++];
+ } while (tick_period < min_period && unit < countof(ScaleUnits));
+
+ prefix = (order - FirstSIPrefixPower) / 3;
+ assert(prefix < countof(SIPrefixes));
+
+
+ typical_width = p.boundingRect(0, 0, INT_MAX, INT_MAX,
+ AlignLeft | AlignTop, format_time(_view.offset(),
+ prefix)).width() + MinValueSpacing;
- const double multiplier = pow(0.1, prefix * 3 + FirstSIPrefixPower);
+ min_width += SpacingIncrement;
+
+ } while(typical_width > tick_period / _view.scale());
const int text_height = p.boundingRect(0, 0, INT_MAX, INT_MAX,
- Qt::AlignLeft | Qt::AlignTop, "8").height();
+ AlignLeft | AlignTop, "8").height();
// Draw the tick marks
- p.setPen(Qt::black);
+ p.setPen(palette().color(foregroundRole()));
const double minor_tick_period = tick_period / MinorTickSubdivision;
const double first_major_division =
const double t0 = first_major_division * tick_period;
int division = (int)round(first_minor_division -
- first_major_division * MinorTickSubdivision);
- while(1)
- {
- const double t = t0 + division * minor_tick_period;
- const double x = (t - _view.offset()) / _view.scale();
+ first_major_division * MinorTickSubdivision) - 1;
+
+ const int major_tick_y1 = text_height + ValueMargin * 2;
+ const int tick_y2 = height();
+ const int minor_tick_y1 = (major_tick_y1 + tick_y2) / 2;
- if(x >= width())
- break;
+ double x;
- if(division % MinorTickSubdivision == 0)
+ do {
+ const double t = t0 + division * minor_tick_period;
+ x = (t - _view.offset()) / _view.scale();
+
+ if (division % MinorTickSubdivision == 0)
{
// Draw a major tick
- QString s;
- QTextStream ts(&s);
- ts << (t * multiplier) << SIPrefixes[prefix] << "s";
- p.drawText(x, 0, 0, text_height, Qt::AlignCenter |
- Qt::AlignTop | Qt::TextDontClip, s);
- p.drawLine(x, text_height, x, height());
+ p.drawText(x, ValueMargin, 0, text_height,
+ AlignCenter | AlignTop | TextDontClip,
+ format_time(t, prefix));
+ p.drawLine(QPointF(x, major_tick_y1),
+ QPointF(x, tick_y2));
}
else
{
// Draw a minor tick
- p.drawLine(x, (text_height + height()) / 2,
- x, height());
+ p.drawLine(QPointF(x, minor_tick_y1),
+ QPointF(x, tick_y2));
}
division++;
- }
+
+ } while (x < width());
+
+ // Draw the cursors
+ if (_view.cursors_shown())
+ _view.cursors().draw_markers(p, rect(), prefix);
+
+ // Draw the hover mark
+ draw_hover_mark(p);
p.end();
}
+void Ruler::mouseMoveEvent(QMouseEvent *e)
+{
+ if (!(e->buttons() & Qt::LeftButton))
+ return;
+
+ if ((e->pos() - _mouse_down_point).manhattanLength() <
+ QApplication::startDragDistance())
+ return;
+
+ _dragging = true;
+
+ if (shared_ptr<TimeMarker> m = _grabbed_marker.lock())
+ m->set_time(_view.offset() +
+ ((double)e->x() + 0.5) * _view.scale());
+}
+
+void Ruler::mousePressEvent(QMouseEvent *e)
+{
+ if (e->buttons() & Qt::LeftButton)
+ {
+ _mouse_down_point = e->pos();
+
+ _grabbed_marker.reset();
+
+ clear_selection();
+
+ if (_view.cursors_shown()) {
+ CursorPair &cursors = _view.cursors();
+ if (cursors.first()->get_label_rect(
+ rect()).contains(e->pos()))
+ _grabbed_marker = cursors.first();
+ else if (cursors.second()->get_label_rect(
+ rect()).contains(e->pos()))
+ _grabbed_marker = cursors.second();
+ }
+
+ if (shared_ptr<TimeMarker> m = _grabbed_marker.lock())
+ m->select();
+
+ selection_changed();
+ }
+}
+
+void Ruler::mouseReleaseEvent(QMouseEvent *)
+{
+ using pv::widgets::Popup;
+
+ if (!_dragging)
+ if (shared_ptr<TimeMarker> m = _grabbed_marker.lock()) {
+ Popup *const p = m->create_popup(&_view);
+ p->set_position(mapToGlobal(QPoint(m->get_x(),
+ height())), Popup::Bottom);
+ p->show();
+ }
+
+ _dragging = false;
+ _grabbed_marker.reset();
+}
+
+void Ruler::draw_hover_mark(QPainter &p)
+{
+ const int x = _view.hover_point().x();
+
+ if (x == -1 || _dragging)
+ return;
+
+ p.setPen(QPen(Qt::NoPen));
+ p.setBrush(QBrush(palette().color(foregroundRole())));
+
+ const int b = height() - 1;
+ const QPointF points[] = {
+ QPointF(x, b),
+ QPointF(x - HoverArrowSize, b - HoverArrowSize),
+ QPointF(x + HoverArrowSize, b - HoverArrowSize)
+ };
+ p.drawPolygon(points, countof(points));
+}
+
+void Ruler::hover_point_changed()
+{
+ update();
+}
+
} // namespace view
} // namespace pv
projects / pulseview.git / blobdiff