* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*/
-#include "ruler.h"
-#include "view.h"
-#include "viewport.h"
-
#include <extdef.h>
-#include <assert.h>
-#include <math.h>
-
+#include <QApplication>
+#include <QFontMetrics>
#include <QMouseEvent>
-#include <QPainter>
-#include <QTextStream>
+
+#include "ruler.hpp"
+#include "view.hpp"
+
+#include <pv/util.hpp>
+#include <pv/widgets/popup.hpp>
+
+using namespace Qt;
+
+using std::shared_ptr;
+using std::vector;
namespace pv {
namespace view {
+const int Ruler::RulerHeight = 30;
const int Ruler::MinorTickSubdivision = 4;
-const int Ruler::ScaleUnits[3] = {1, 2, 5};
-
-const QString Ruler::SIPrefixes[9] =
- {"f", "p", "n", QChar(0x03BC), "m", "", "k", "M", "G"};
-const int Ruler::FirstSIPrefixPower = -15;
const int Ruler::HoverArrowSize = 5;
+const int Ruler::Padding = 20;
+const int Ruler::BaselineOffset = 5;
+
Ruler::Ruler(View &parent) :
- QWidget(&parent),
- _view(parent)
+ MarginWidget(parent),
+ text_height_(calculate_text_height())
{
setMouseTracking(true);
- connect(&_view, SIGNAL(hover_point_changed()),
+ connect(&view_, SIGNAL(hover_point_changed()),
this, SLOT(hover_point_changed()));
}
-void Ruler::paintEvent(QPaintEvent *event)
+void Ruler::clear_selection()
{
- QPainter p(this);
- p.setRenderHint(QPainter::Antialiasing);
-
- const double MinSpacing = 80;
-
- const double min_period = _view.scale() * MinSpacing;
-
- const int order = (int)floorf(log10f(min_period));
- const double order_decimal = pow(10, order);
+ const vector< shared_ptr<TimeItem> > items(view_.time_items());
+ for (auto &i : items)
+ i->select(false);
+ update();
+}
- unsigned int unit = 0;
- double tick_period = 0.0f;
+QSize Ruler::sizeHint() const
+{
+ return QSize(0, RulerHeight);
+}
- do
- {
- tick_period = order_decimal * ScaleUnits[unit++];
- } while(tick_period < min_period && unit < countof(ScaleUnits));
+QSize Ruler::extended_size_hint() const
+{
+ return QSize(0, RulerHeight +
+ (text_height_ + Padding + BaselineOffset) / 2);
+}
- const unsigned int prefix = (order - FirstSIPrefixPower) / 3;
- assert(prefix >= 0);
- assert(prefix < countof(SIPrefixes));
+void Ruler::paintEvent(QPaintEvent*)
+{
+ const int ValueMargin = 3;
- const double multiplier = pow(10.0, - prefix * 3 - FirstSIPrefixPower);
+ QPainter p(this);
+ p.setRenderHint(QPainter::Antialiasing);
- const int text_height = p.boundingRect(0, 0, INT_MAX, INT_MAX,
- Qt::AlignLeft | Qt::AlignTop, "8").height();
+ const double tick_period = view_.tick_period();
+ const unsigned int prefix = view_.tick_prefix();
// 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 =
- floor(_view.offset() / tick_period);
+ floor(view_.offset() / tick_period);
const double first_minor_division =
- ceil(_view.offset() / minor_tick_period);
+ 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);
- 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 = RulerHeight;
+ const int minor_tick_y1 = (major_tick_y1 + tick_y2) / 2;
- if(x >= width())
- break;
+ double x;
+
+ do {
+ const double t = t0 + division * minor_tick_period;
+ x = (t - view_.offset()) / view_.scale();
- if(division % MinorTickSubdivision == 0)
+ 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(QPointF(x, text_height),
- QPointF(x, height()));
+ 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, tick_y2));
}
else
{
// Draw a minor tick
- p.drawLine(QPointF(x, (text_height + height()) / 2),
- QPointF(x, height()));
+ p.drawLine(QPointF(x, minor_tick_y1),
+ QPointF(x, tick_y2));
}
division++;
- }
+
+ } while (x < width());
// Draw the hover mark
draw_hover_mark(p);
- p.end();
+ // 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, -BaselineOffset);
+
+ // Draw the items
+ const vector< shared_ptr<TimeItem> > items(view_.time_items());
+ for (auto &i : items)
+ i->paint_label(p, r);
+}
+
+void Ruler::mouseMoveEvent(QMouseEvent *e)
+{
+ mouse_point_ = e->pos();
+
+ if (!(e->buttons() & Qt::LeftButton))
+ return;
+
+ if ((e->pos() - mouse_down_point_).manhattanLength() <
+ QApplication::startDragDistance())
+ return;
+
+ // Do the drag
+ dragging_ = true;
+
+ const int delta = e->pos().x() - mouse_down_point_.x();
+ const vector< shared_ptr<TimeItem> > items(view_.time_items());
+ for (auto &i : items)
+ if (i->dragging())
+ i->set_time(view_.offset() +
+ (i->drag_point().x() + delta - 0.5) *
+ view_.scale());
+}
+
+void Ruler::mousePressEvent(QMouseEvent *e)
+{
+ if (e->buttons() & Qt::LeftButton) {
+ mouse_down_point_ = e->pos();
+
+ mouse_down_item_.reset();
+
+ clear_selection();
+
+ const vector< shared_ptr<TimeItem> > items(view_.time_items());
+ for (auto i = items.rbegin(); i != items.rend(); i++)
+ if ((*i)->label_rect(rect()).contains(e->pos())) {
+ mouse_down_item_ = (*i);
+ break;
+ }
+
+ if (mouse_down_item_) {
+ mouse_down_item_->select();
+ mouse_down_item_->drag();
+ }
+
+ selection_changed();
+ }
+}
+
+void Ruler::mouseReleaseEvent(QMouseEvent *)
+{
+ using pv::widgets::Popup;
+
+ if (!dragging_ && mouse_down_item_) {
+ Popup *const p = mouse_down_item_->create_popup(&view_);
+ if (p) {
+ const QPoint arrpos(mouse_down_item_->get_x(),
+ height() - BaselineOffset);
+ p->set_position(mapToGlobal(arrpos), Popup::Bottom);
+ p->show();
+ }
+ }
+
+ dragging_ = false;
+ mouse_down_item_.reset();
+
+ const vector< shared_ptr<TimeItem> > items(view_.time_items());
+ for (auto &i : items)
+ i->drag_release();
+}
+
+void Ruler::leaveEvent(QEvent*)
+{
+ mouse_point_ = QPoint(-1, -1);
+ update();
+}
+
+void Ruler::mouseDoubleClickEvent(QMouseEvent *e)
+{
+ view_.add_flag(view_.offset() + ((double)e->x() + 0.5) * view_.scale());
+}
+
+void Ruler::keyPressEvent(QKeyEvent *e)
+{
+ assert(e);
+
+ if (e->key() == Qt::Key_Delete)
+ {
+ const vector< shared_ptr<TimeItem> > items(view_.time_items());
+ for (auto &i : items)
+ if (i->selected())
+ i->delete_pressed();
+ }
}
void Ruler::draw_hover_mark(QPainter &p)
{
- const int x = _view.hover_point().x();
- if(x == -1)
+ const int x = view_.hover_point().x();
+
+ if (x == -1)
return;
p.setPen(QPen(Qt::NoPen));
- p.setBrush(QBrush(QColor(Qt::black)));
+ p.setBrush(QBrush(palette().color(foregroundRole())));
- const int b = height() - 1;
+ const int b = RulerHeight;
const QPointF points[] = {
QPointF(x, b),
QPointF(x - HoverArrowSize, b - HoverArrowSize),
p.drawPolygon(points, countof(points));
}
+int Ruler::calculate_text_height()
+{
+ QFontMetrics fm(font());
+ return fm.boundingRect(0, 0, INT_MAX, INT_MAX,
+ Qt::AlignLeft | Qt::AlignTop, "8").height();
+}
+
void Ruler::hover_point_changed()
{
update();