-/*
- * 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, write to the Free Software
- * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
- */
-
-#include "header.h"
-#include "view.h"
-
-#include "signal.h"
-#include "../sigsession.h"
-
-#include <assert.h>
-
-#include <QApplication>
-#include <QMenu>
-#include <QMouseEvent>
-#include <QPainter>
-#include <QRect>
-
-#include <pv/widgets/popup.h>
-
-using std::max;
-using std::make_pair;
-using std::pair;
-using std::shared_ptr;
-using std::vector;
-
-namespace pv {
-namespace view {
-
-const int Header::Padding = 12;
-const int Header::BaselineOffset = 5;
-
-Header::Header(View &parent) :
- MarginWidget(parent),
- _dragging(false)
-{
- setFocusPolicy(Qt::ClickFocus);
- setMouseTracking(true);
-
- connect(&_view.session(), SIGNAL(signals_changed()),
- this, SLOT(on_signals_changed()));
-
- connect(&_view, SIGNAL(signals_moved()),
- this, SLOT(on_signals_moved()));
-
- // Trigger the initial event manually. The default device has signals
- // which were created before this object came into being
- on_signals_changed();
-}
-
-QSize Header::sizeHint() const
-{
- int max_width = 0;
-
- const vector< shared_ptr<RowItem> > row_items(_view.child_items());
- for (shared_ptr<RowItem> r : row_items) {
- assert(r);
-
- if (r->enabled()) {
- max_width = max(max_width, (int)r->label_rect(0).width());
- }
- }
-
- return QSize(max_width + Padding + BaselineOffset, 0);
-}
-
-shared_ptr<RowItem> Header::get_mouse_over_row_item(const QPoint &pt)
-{
- const int w = width() - BaselineOffset;
- const vector< shared_ptr<RowItem> > row_items(_view.child_items());
-
- for (const shared_ptr<RowItem> r : row_items)
- {
- assert(r);
- if (r->enabled() && r->label_rect(w).contains(pt))
- return r;
- }
-
- return shared_ptr<RowItem>();
-}
-
-void Header::clear_selection()
-{
- const vector< shared_ptr<RowItem> > row_items(_view.child_items());
- for (const shared_ptr<RowItem> r : row_items) {
- assert(r);
- r->select(false);
- }
-
- update();
-}
-
-void Header::paintEvent(QPaintEvent*)
-{
- // 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 int w = width() - BaselineOffset;
- const vector< shared_ptr<RowItem> > row_items(_view.child_items());
-
- QPainter painter(this);
- painter.setRenderHint(QPainter::Antialiasing);
-
- const bool dragging = !_drag_row_items.empty();
- for (const shared_ptr<RowItem> r : row_items)
- {
- assert(r);
-
- const bool highlight = !dragging &&
- r->label_rect(w).contains(_mouse_point);
- r->paint_label(painter, w, highlight);
- }
-
- painter.end();
-}
-
-void Header::mousePressEvent(QMouseEvent *event)
-{
- assert(event);
-
- const vector< shared_ptr<RowItem> > row_items(_view.child_items());
-
- if (event->button() & Qt::LeftButton) {
- _mouse_down_point = event->pos();
-
- // Save the offsets of any signals which will be dragged
- for (const shared_ptr<RowItem> r : row_items)
- if (r->selected())
- _drag_row_items.push_back(
- make_pair(r, r->v_offset()));
- }
-
- // Select the signal if it has been clicked
- const shared_ptr<RowItem> mouse_over_row_item =
- get_mouse_over_row_item(event->pos());
- if (mouse_over_row_item) {
- if (mouse_over_row_item->selected())
- mouse_over_row_item->select(false);
- else {
- mouse_over_row_item->select(true);
-
- if (~QApplication::keyboardModifiers() &
- Qt::ControlModifier)
- _drag_row_items.clear();
-
- // Add the signal to the drag list
- if (event->button() & Qt::LeftButton)
- _drag_row_items.push_back(
- make_pair(mouse_over_row_item,
- mouse_over_row_item->v_offset()));
- }
- }
-
- if (~QApplication::keyboardModifiers() & Qt::ControlModifier) {
- // Unselect all other signals because the Ctrl is not
- // pressed
- for (const shared_ptr<RowItem> r : row_items)
- if (r != mouse_over_row_item)
- r->select(false);
- }
-
- selection_changed();
- update();
-}
-
-void Header::mouseReleaseEvent(QMouseEvent *event)
-{
- using pv::widgets::Popup;
-
- assert(event);
- if (event->button() == Qt::LeftButton) {
- if (_dragging)
- _view.normalize_layout();
- else
- {
- const shared_ptr<RowItem> mouse_over_row_item =
- get_mouse_over_row_item(event->pos());
- if (mouse_over_row_item) {
- const int w = width() - BaselineOffset;
- Popup *const p =
- mouse_over_row_item->create_popup(&_view);
- p->set_position(mapToGlobal(QPoint(w,
- mouse_over_row_item->get_y())),
- Popup::Right);
- p->show();
- }
- }
-
- _dragging = false;
- _drag_row_items.clear();
- }
-}
-
-void Header::mouseMoveEvent(QMouseEvent *event)
-{
- assert(event);
- _mouse_point = event->pos();
-
- if (!(event->buttons() & Qt::LeftButton))
- return;
-
- if ((event->pos() - _mouse_down_point).manhattanLength() <
- QApplication::startDragDistance())
- return;
-
- // Move the signals if we are dragging
- if (!_drag_row_items.empty())
- {
- _dragging = true;
-
- const int delta = event->pos().y() - _mouse_down_point.y();
-
- for (auto i = _drag_row_items.begin();
- i != _drag_row_items.end(); i++) {
- const std::shared_ptr<RowItem> row_item((*i).first);
- if (row_item) {
- const int y = (*i).second + delta;
- const int y_snap =
- ((y + View::SignalSnapGridSize / 2) /
- View::SignalSnapGridSize) *
- View::SignalSnapGridSize;
- row_item->set_v_offset(y_snap);
-
- // Ensure the trace is selected
- row_item->select();
- }
-
- }
-
- signals_moved();
- }
-
- update();
-}
-
-void Header::leaveEvent(QEvent*)
-{
- _mouse_point = QPoint(-1, -1);
- update();
-}
-
-void Header::contextMenuEvent(QContextMenuEvent *event)
-{
- const shared_ptr<RowItem> r = get_mouse_over_row_item(_mouse_point);
-
- if (r)
- r->create_context_menu(this)->exec(event->globalPos());
-}
-
-void Header::keyPressEvent(QKeyEvent *e)
-{
- assert(e);
-
- switch (e->key())
- {
- case Qt::Key_Delete:
- {
- const vector< shared_ptr<RowItem> > row_items(_view.child_items());
- for (const shared_ptr<RowItem> r : row_items)
- if (r->selected())
- r->delete_pressed();
- break;
- }
- }
-}
-
-void Header::on_signals_changed()
-{
- const vector< shared_ptr<RowItem> > row_items(_view.child_items());
- for (shared_ptr<RowItem> r : row_items) {
- assert(r);
- connect(r.get(), SIGNAL(visibility_changed()),
- this, SLOT(on_trace_changed()));
- connect(r.get(), SIGNAL(text_changed()),
- this, SLOT(on_trace_changed()));
- connect(r.get(), SIGNAL(colour_changed()),
- this, SLOT(update()));
- }
-}
-
-void Header::on_signals_moved()
-{
- update();
-}
-
-void Header::on_trace_changed()
-{
- update();
- geometry_updated();
-}
-
-} // namespace view
-} // namespace pv