]> sigrok.org Git - pulseview.git/blobdiff - pv/view/header.cpp
Header: Make get_mouse_over_item return shared_ptr<ViewItem>
[pulseview.git] / pv / view / header.cpp
index 976172137987e3780382a50a75e0eced462a2be7..a2a7c505cfd420c5b6b66e3e6224795c7ecdabe9 100644 (file)
  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301 USA
  */
 
-#include "header.h"
-#include "view.h"
+#include "header.hpp"
+#include "view.hpp"
 
-#include "signal.h"
-#include "../sigsession.h"
+#include "signal.hpp"
+#include "tracegroup.hpp"
 
-#include <assert.h>
+#include <cassert>
+#include <algorithm>
 
-#include <boost/foreach.hpp>
+#include <boost/iterator/filter_iterator.hpp>
 
 #include <QApplication>
-#include <QColorDialog>
-#include <QInputDialog>
 #include <QMenu>
 #include <QMouseEvent>
 #include <QPainter>
 #include <QRect>
 
-using namespace boost;
-using namespace std;
+#include <pv/session.hpp>
+#include <pv/widgets/popup.hpp>
+
+using boost::make_filter_iterator;
+using std::dynamic_pointer_cast;
+using std::max;
+using std::make_pair;
+using std::min;
+using std::pair;
+using std::shared_ptr;
+using std::stable_sort;
+using std::vector;
 
 namespace pv {
 namespace view {
 
-Header::Header(View &parent) :
-       QWidget(&parent),
-       _view(parent),
-       _action_set_name(new QAction(tr("Set &Name..."), this)),
-       _action_set_colour(new QAction(tr("Set &Colour..."), this))
-{
-       setMouseTracking(true);
+const int Header::Padding = 12;
+const int Header::BaselineOffset = 5;
 
-       connect(_action_set_name, SIGNAL(triggered()),
-               this, SLOT(on_action_set_name_triggered()));
-       connect(_action_set_colour, SIGNAL(triggered()),
-               this, SLOT(on_action_set_colour_triggered()));
+static bool item_selected(shared_ptr<RowItem> r)
+{
+       return r->selected();
 }
 
-boost::shared_ptr<pv::view::Signal> Header::get_mouse_over_signal(
-       const QPoint &pt)
+Header::Header(View &parent) :
+       MarginWidget(parent)
 {
-       const int w = width();
-       const vector< shared_ptr<Signal> > &sigs =
-               _view.session().get_signals();
+       connect(&view_, SIGNAL(signals_moved()),
+               this, SLOT(on_signals_moved()));
+}
 
-       const int v_offset = _view.v_offset();
-       BOOST_FOREACH(const shared_ptr<Signal> s, sigs)
-       {
-               assert(s);
+QSize Header::sizeHint() const
+{
+       QRectF max_rect(-Padding, 0, Padding, 0);
+       for (auto &i : view_)
+               if (i->enabled())
+                       max_rect = max_rect.united(i->label_rect(QRect()));
+       return QSize(max_rect.width() + Padding + BaselineOffset, 0);
+}
 
-               const QRect signal_heading_rect(
-                       0, s->get_v_offset() - v_offset,
-                       w, View::SignalHeight);
+QSize Header::extended_size_hint() const
+{
+       return sizeHint() + QSize(ViewItem::HighlightRadius, 0);
+}
 
-               if(s->pt_in_label_rect(signal_heading_rect, pt))
-                       return s;
-       }
+shared_ptr<ViewItem> Header::get_mouse_over_item(const QPoint &pt)
+{
+       const QRect r(0, 0, width() - BaselineOffset, height());
+       for (auto &i : view_)
+               if (i->enabled() && i->label_rect(r).contains(pt))
+                       return i;
+       return shared_ptr<RowItem>();
+}
 
-       return shared_ptr<Signal>();
+void Header::clear_selection()
+{
+       for (auto &i : view_)
+               i->select(false);
+       update();
 }
 
-void Header::paintEvent(QPaintEvent *event)
+void Header::paintEvent(QPaintEvent*)
 {
-       const int w = width();
-       const vector< shared_ptr<Signal> > &sigs =
-               _view.session().get_signals();
+       // The trace labels are not drawn with the arrows exactly on the
+       // left edge of the widget, because then the selection shadow
+       // would be clipped away.
+       const QRect rect(0, 0, width() - BaselineOffset, height());
+
+       vector< shared_ptr<RowItem> > row_items(
+               view_.begin(), view_.end());
+
+       stable_sort(row_items.begin(), row_items.end(),
+               [](const shared_ptr<RowItem> &a, const shared_ptr<RowItem> &b) {
+                       return a->visual_v_offset() < b->visual_v_offset(); });
 
        QPainter painter(this);
        painter.setRenderHint(QPainter::Antialiasing);
 
-       const int v_offset = _view.v_offset();
-       BOOST_FOREACH(const shared_ptr<Signal> s, sigs)
+       for (const shared_ptr<RowItem> r : row_items)
        {
-               assert(s);
-
-               const QRect signal_heading_rect(
-                       0, s->get_v_offset() - v_offset,
-                       w, View::SignalHeight);
+               assert(r);
 
-               s->paint_label(painter, signal_heading_rect,
-                       s->pt_in_label_rect(signal_heading_rect, _mouse_point));
+               const bool highlight = !dragging_ &&
+                       r->label_rect(rect).contains(mouse_point_);
+               r->paint_label(painter, rect, highlight);
        }
 
        painter.end();
 }
 
+void Header::mouseLeftPressEvent(QMouseEvent *event)
+{
+       (void)event;
+
+       const bool ctrl_pressed =
+               QApplication::keyboardModifiers() & Qt::ControlModifier;
+
+       // Clear selection if control is not pressed and this item is unselected
+       if ((!mouse_down_item_ || !mouse_down_item_->selected()) &&
+               !ctrl_pressed)
+               for (shared_ptr<RowItem> r : view_)
+                       r->select(false);
+
+       // Set the signal selection state if the item has been clicked
+       if (mouse_down_item_) {
+               if (ctrl_pressed)
+                       mouse_down_item_->select(!mouse_down_item_->selected());
+               else
+                       mouse_down_item_->select(true);
+       }
+
+       // Save the offsets of any signals which will be dragged
+       for (const shared_ptr<RowItem> r : view_)
+               if (r->selected())
+                       r->drag();
+
+       selection_changed();
+       update();
+}
+
 void Header::mousePressEvent(QMouseEvent *event)
 {
        assert(event);
 
-       const vector< shared_ptr<Signal> > &sigs =
-               _view.session().get_signals();
+       mouse_down_point_ = event->pos();
+       mouse_down_item_ = get_mouse_over_item(event->pos());
 
-       if(~QApplication::keyboardModifiers() & Qt::ControlModifier) {
-               // Unselect all other signals because the Ctrl is not
-               // pressed
-               BOOST_FOREACH(const shared_ptr<Signal> s, sigs)
-                       s->select(false);
-       }
+       if (event->button() & Qt::LeftButton)
+               mouseLeftPressEvent(event);
+}
+
+void Header::mouseLeftReleaseEvent(QMouseEvent *event)
+{
+       assert(event);
 
-       // Select the signal if it has been clicked
-       const shared_ptr<Signal> mouse_over_signal =
-               get_mouse_over_signal(event->pos());
-       if(mouse_over_signal)
-               mouse_over_signal->select(!mouse_over_signal->selected());
+       const bool ctrl_pressed =
+               QApplication::keyboardModifiers() & Qt::ControlModifier;
 
-       if(event->button() & Qt::LeftButton) {
-               _mouse_down_point = event->pos();
+       // Unselect everything if control is not pressed
+       const shared_ptr<ViewItem> mouse_over =
+               get_mouse_over_item(event->pos());
 
-               // Save the current signal offsets
-               BOOST_FOREACH(const shared_ptr<Signal> s, sigs)
-                       _mouse_down_signal_offsets[s.get()] =
-                               s->get_v_offset();
+       for (auto &r : view_)
+               r->drag_release();
+
+       if (dragging_)
+               view_.restack_all_row_items();
+       else
+       {
+               if (!ctrl_pressed) {
+                       for (shared_ptr<RowItem> r : view_)
+                               if (mouse_down_item_ != r)
+                                       r->select(false);
+
+                       if (mouse_down_item_)
+                               show_popup(mouse_down_item_);
+               }
        }
 
-       update();
+       dragging_ = false;
 }
 
 void Header::mouseReleaseEvent(QMouseEvent *event)
 {
        assert(event);
-       if(event->button() == Qt::LeftButton)
-               _mouse_down_signal_offsets.clear();
+       if (event->button() & Qt::LeftButton)
+               mouseLeftReleaseEvent(event);
+
+       mouse_down_item_ = nullptr;
 }
 
 void Header::mouseMoveEvent(QMouseEvent *event)
 {
        assert(event);
-       _mouse_point = event->pos();
-
-       // Move the signals if we are dragging
-       if(!_mouse_down_signal_offsets.empty()) {
-               const vector< shared_ptr<Signal> > &sigs =
-                       _view.session().get_signals();
-               const int delta = event->pos().y() - _mouse_down_point.y();
-
-               BOOST_FOREACH(const shared_ptr<Signal> s, sigs)
-                       if(s->selected()) {
-                               const int y =
-                                       _mouse_down_signal_offsets[s.get()] +
-                                       delta;
-                               const int y_snap =
-                                       ((y + View::SignalSnapGridSize / 2) /
-                                               View::SignalSnapGridSize) *
-                                               View::SignalSnapGridSize;
-                               s->set_v_offset(y_snap  );
-                       }
+       mouse_point_ = event->pos();
 
-               signals_moved();
-       }
+       if (!(event->buttons() & Qt::LeftButton))
+               return;
 
-       update();
-}
+       if ((event->pos() - mouse_down_point_).manhattanLength() <
+               QApplication::startDragDistance())
+               return;
+
+       // Check all the drag items share a common owner
+       RowItemOwner *item_owner = nullptr;
+       for (shared_ptr<RowItem> r : view_)
+               if (r->dragging()) {
+                       if (!item_owner)
+                               item_owner = r->owner();
+                       else if(item_owner != r->owner())
+                               return;
+               }
+
+       if (!item_owner)
+               return;
+
+       // Do the drag
+       dragging_ = true;
+
+       const QPoint delta = event->pos() - mouse_down_point_;
+
+       for (std::shared_ptr<RowItem> r : view_)
+               if (r->dragging()) {
+                       r->drag_by(delta);
+
+                       // Ensure the trace is selected
+                       r->select();
+               }
+
+       item_owner->restack_items();
+       for (const auto &r : *item_owner)
+               r->animate_to_layout_v_offset();
+       signals_moved();
 
-void Header::leaveEvent(QEvent *event)
-{
-       _mouse_point = QPoint(-1, -1);
        update();
 }
 
 void Header::contextMenuEvent(QContextMenuEvent *event)
 {
-       const shared_ptr<Signal> s = get_mouse_over_signal(_mouse_point);
-
-       if(!s)
+       const shared_ptr<ViewItem> r = get_mouse_over_item(mouse_point_);
+       if (!r)
                return;
 
-       QMenu menu(this);
-       menu.addAction(_action_set_name);
-       menu.addAction(_action_set_colour);
+       QMenu *menu = r->create_context_menu(this);
+       if (!menu)
+               menu = new QMenu(this);
+
+       if (std::count_if(view_.begin(), view_.end(), item_selected) > 1)
+       {
+               menu->addSeparator();
+
+               QAction *const group = new QAction(tr("Group"), this);
+               QList<QKeySequence> shortcuts;
+               shortcuts.append(QKeySequence(Qt::ControlModifier | Qt::Key_G));
+               group->setShortcuts(shortcuts);
+               connect(group, SIGNAL(triggered()), this, SLOT(on_group()));
+               menu->addAction(group);
+       }
 
-       _context_signal = s;
-       menu.exec(event->globalPos());
-       _context_signal.reset();
+       menu->exec(event->globalPos());
 }
 
-void Header::on_action_set_name_triggered()
+void Header::keyPressEvent(QKeyEvent *e)
 {
-       shared_ptr<view::Signal> context_signal = _context_signal;
-       if(!context_signal)
-               return;
-
-       const QString new_label = QInputDialog::getText(this, tr("Set Name"),
-               tr("Name"), QLineEdit::Normal, context_signal->get_name());
+       assert(e);
 
-       if(!new_label.isEmpty())
-               context_signal->set_name(new_label);
+       if (e->key() == Qt::Key_Delete)
+       {
+               for (const shared_ptr<RowItem> r : view_)
+                       if (r->selected())
+                               r->delete_pressed();
+       }
+       else if (e->key() == Qt::Key_G && e->modifiers() == Qt::ControlModifier)
+               on_group();
+       else if (e->key() == Qt::Key_U && e->modifiers() == Qt::ControlModifier)
+               on_ungroup();
 }
 
-void Header::on_action_set_colour_triggered()
+void Header::on_signals_moved()
 {
-       shared_ptr<view::Signal> context_signal = _context_signal;
-       if(!context_signal)
-               return;
+       update();
+}
 
-       const QColor new_colour = QColorDialog::getColor(
-               context_signal->get_colour(), this, tr("Set Colour"));
+void Header::on_group()
+{
+       vector< shared_ptr<RowItem> > selected_items(
+               make_filter_iterator(item_selected, view_.begin(), view_.end()),
+               make_filter_iterator(item_selected, view_.end(), view_.end()));
+       stable_sort(selected_items.begin(), selected_items.end(),
+               [](const shared_ptr<RowItem> &a, const shared_ptr<RowItem> &b) {
+                       return a->visual_v_offset() < b->visual_v_offset(); });
+
+       shared_ptr<TraceGroup> group(new TraceGroup());
+       shared_ptr<RowItem> mouse_down_item(
+               std::dynamic_pointer_cast<RowItem>(mouse_down_item_));
+       shared_ptr<RowItem> focus_item(
+               mouse_down_item ? mouse_down_item : selected_items.front());
+
+       assert(focus_item);
+       assert(focus_item->owner());
+       focus_item->owner()->add_child_item(group);
+
+       // Set the group v_offset here before reparenting
+       group->force_to_v_offset(focus_item->layout_v_offset() +
+               focus_item->v_extents().first);
+
+       for (size_t i = 0; i < selected_items.size(); i++) {
+               const shared_ptr<RowItem> &r = selected_items[i];
+               assert(r->owner());
+               r->owner()->remove_child_item(r);
+               group->add_child_item(r);
+
+               // Put the items at 1-pixel offsets, so that restack will
+               // stack them in the right order
+               r->set_layout_v_offset(i);
+       }
+}
 
-       if(new_colour.isValid())
-               context_signal->set_colour(new_colour);
+void Header::on_ungroup()
+{
+       bool restart;
+       do {
+               restart = false;
+               for (const shared_ptr<RowItem> r : view_) {
+                       const shared_ptr<TraceGroup> tg =
+                               dynamic_pointer_cast<TraceGroup>(r);
+                       if (tg && tg->selected()) {
+                               tg->ungroup();
+                               restart = true;
+                               break;
+                       }
+               }
+       } while(restart);
 }
 
 } // namespace view