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_.offset(),
view_.scale(),
width(),
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) {
p.drawText(tick.first, ValueMargin, 0, text_height,
AlignCenter | AlignTop | TextDontClip, tick.second);
p.drawLine(QPointF(tick.first, 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::paintEvent(QPaintEvent*)
{
const int ValueMargin = 3;
QPainter p(this);
p.setRenderHint(QPainter::Antialiasing);
const double tick_period = view_.tick_period();
const unsigned int prefix = view_.tick_prefix();
// Draw the tick marks
p.setPen(palette().color(foregroundRole()));
const double minor_tick_period = tick_period / MinorTickSubdivision;
const double first_major_division =
floor(view_.offset() / tick_period);
const double first_minor_division =
ceil(view_.offset() / minor_tick_period);
const double t0 = first_major_division * tick_period;
int division = (int)round(first_minor_division -
first_major_division * MinorTickSubdivision) - 1;
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;
double x;
do {
const double t = t0 + division * minor_tick_period;
x = (t - view_.offset()) / view_.scale();
if (division % MinorTickSubdivision == 0)
{
// Draw a major tick
p.drawText(x, ValueMargin, 0, text_height,
AlignCenter | AlignTop | TextDontClip,
pv::util::format_time(t, prefix));
p.drawLine(QPointF(x, major_tick_y1),
QPointF(x, ruler_height));
}
else
{
// Draw a minor tick
p.drawLine(QPointF(x, minor_tick_y1),
QPointF(x, ruler_height));
}
division++;
} while (x < width());
// Draw the hover mark
draw_hover_mark(p, text_height);
// 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);
}
}
