2 * This file is part of the PulseView project.
4 * Copyright (C) 2014 Joel Holdsworth <joel@airwebreathe.org.uk>
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation; either version 2 of the License, or
9 * (at your option) any later version.
11 * This program is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
16 * You should have received a copy of the GNU General Public License
17 * along with this program; if not, write to the Free Software
18 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
21 #include <QApplication>
22 #include <QMouseEvent>
23 #include <QTouchEvent>
25 #include "tracetreeitem.hpp"
27 #include "viewwidget.hpp"
30 using std::shared_ptr;
36 ViewWidget::ViewWidget(View &parent) :
41 setFocusPolicy(Qt::ClickFocus);
42 setAttribute(Qt::WA_AcceptTouchEvents, true);
43 setMouseTracking(true);
46 void ViewWidget::clear_selection()
48 const auto items = this->items();
53 void ViewWidget::item_hover(const shared_ptr<ViewItem> &item)
58 void ViewWidget::item_clicked(const shared_ptr<ViewItem> &item)
63 bool ViewWidget::accept_drag() const
65 const vector< shared_ptr<TimeItem> > items(view_.time_items());
66 const vector< shared_ptr<TraceTreeItem> > trace_tree_items(
67 view_.list_by_type<TraceTreeItem>());
69 const bool any_row_items_selected = any_of(
70 trace_tree_items.begin(), trace_tree_items.end(),
71 [](const shared_ptr<TraceTreeItem> &r) { return r->selected(); });
73 const bool any_time_items_selected = any_of(items.begin(), items.end(),
74 [](const shared_ptr<TimeItem> &i) { return i->selected(); });
76 if (any_row_items_selected && !any_time_items_selected)
78 // Check all the drag items share a common owner
79 TraceTreeItemOwner *item_owner = nullptr;
80 for (shared_ptr<TraceTreeItem> r : trace_tree_items)
83 item_owner = r->owner();
84 else if (item_owner != r->owner())
90 else if (any_time_items_selected && !any_row_items_selected)
95 // A background drag is beginning
99 bool ViewWidget::mouse_down() const
101 return mouse_down_point_.x() != INT_MIN &&
102 mouse_down_point_.y() != INT_MIN;
105 void ViewWidget::drag_items(const QPoint &delta)
107 bool item_dragged = false;
109 // Drag the row items
110 const vector< shared_ptr<RowItem> > row_items(
111 view_.list_by_type<RowItem>());
112 for (shared_ptr<RowItem> r : row_items)
116 // Ensure the trace is selected
122 // If an item is being dragged, update the stacking
123 TraceTreeItemOwner *item_owner = nullptr;
124 const vector< shared_ptr<TraceTreeItem> > trace_tree_items(
125 view_.list_by_type<TraceTreeItem>());
126 for (shared_ptr<TraceTreeItem> i : trace_tree_items)
128 item_owner = i->owner();
131 item_owner->restack_items();
132 for (shared_ptr<TraceTreeItem> i : trace_tree_items)
133 i->animate_to_layout_v_offset();
136 // Drag the time items
137 const vector< shared_ptr<TimeItem> > items(view_.time_items());
138 for (auto &i : items)
144 // Do the background drag
149 void ViewWidget::drag()
153 void ViewWidget::drag_by(const QPoint &delta)
158 void ViewWidget::drag_release()
162 void ViewWidget::mouse_left_press_event(QMouseEvent *event)
166 const bool ctrl_pressed =
167 QApplication::keyboardModifiers() & Qt::ControlModifier;
169 // Clear selection if control is not pressed and this item is unselected
170 if ((!mouse_down_item_ || !mouse_down_item_->selected()) &&
174 // Set the signal selection state if the item has been clicked
175 if (mouse_down_item_) {
177 mouse_down_item_->select(!mouse_down_item_->selected());
179 mouse_down_item_->select(true);
182 // Save the offsets of any signals which will be dragged
183 bool item_dragged = false;
184 const auto items = this->items();
185 for (auto &i : items)
191 // Do the background drag
198 void ViewWidget::mouse_left_release_event(QMouseEvent *event)
202 auto items = this->items();
203 const bool ctrl_pressed =
204 QApplication::keyboardModifiers() & Qt::ControlModifier;
206 // Unselect everything if control is not pressed
207 const shared_ptr<ViewItem> mouse_over =
208 get_mouse_over_item(event->pos());
210 for (auto &i : items)
214 view_.restack_all_trace_tree_items();
218 for (shared_ptr<ViewItem> i : items)
219 if (mouse_down_item_ != i)
222 if (mouse_down_item_)
223 item_clicked(mouse_down_item_);
227 item_dragging_ = false;
230 bool ViewWidget::touch_event(QTouchEvent *e)
236 bool ViewWidget::event(QEvent *event)
238 switch (event->type()) {
239 case QEvent::TouchBegin:
240 case QEvent::TouchUpdate:
241 case QEvent::TouchEnd:
242 if (touch_event(static_cast<QTouchEvent *>(event)))
250 return QWidget::event(event);
253 void ViewWidget::mousePressEvent(QMouseEvent *event)
257 mouse_down_point_ = event->pos();
258 mouse_down_item_ = get_mouse_over_item(event->pos());
260 if (event->button() & Qt::LeftButton)
261 mouse_left_press_event(event);
264 void ViewWidget::mouseReleaseEvent(QMouseEvent *event)
267 if (event->button() & Qt::LeftButton)
268 mouse_left_release_event(event);
270 mouse_down_point_ = QPoint(INT_MIN, INT_MIN);
271 mouse_down_item_ = nullptr;
274 void ViewWidget::mouseMoveEvent(QMouseEvent *e)
277 mouse_point_ = e->pos();
280 item_hover(get_mouse_over_item(e->pos()));
281 else if (e->buttons() & Qt::LeftButton)
285 if ((e->pos() - mouse_down_point_).manhattanLength() <
286 QApplication::startDragDistance())
292 item_dragging_ = true;
296 drag_items(e->pos() - mouse_down_point_);
300 void ViewWidget::leaveEvent(QEvent*)
302 mouse_point_ = QPoint(-1, -1);