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) {
77 // Check all the drag items share a common owner
78 TraceTreeItemOwner *item_owner = nullptr;
79 for (shared_ptr<TraceTreeItem> r : trace_tree_items)
82 item_owner = r->owner();
83 else if (item_owner != r->owner())
88 } else if (any_time_items_selected && !any_row_items_selected) {
92 // A background drag is beginning
96 bool ViewWidget::mouse_down() const
98 return mouse_down_point_.x() != INT_MIN &&
99 mouse_down_point_.y() != INT_MIN;
102 void ViewWidget::drag_items(const QPoint &delta)
104 bool item_dragged = false;
106 // Drag the row items
107 const vector< shared_ptr<RowItem> > row_items(
108 view_.list_by_type<RowItem>());
109 for (shared_ptr<RowItem> r : row_items)
113 // Ensure the trace is selected
119 // If an item is being dragged, update the stacking
120 TraceTreeItemOwner *item_owner = nullptr;
121 const vector< shared_ptr<TraceTreeItem> > trace_tree_items(
122 view_.list_by_type<TraceTreeItem>());
123 for (shared_ptr<TraceTreeItem> i : trace_tree_items)
125 item_owner = i->owner();
128 item_owner->restack_items();
129 for (shared_ptr<TraceTreeItem> i : trace_tree_items)
130 i->animate_to_layout_v_offset();
133 // Drag the time items
134 const vector< shared_ptr<TimeItem> > items(view_.time_items());
135 for (auto &i : items)
141 // Do the background drag
146 void ViewWidget::drag()
150 void ViewWidget::drag_by(const QPoint &delta)
155 void ViewWidget::drag_release()
159 void ViewWidget::mouse_left_press_event(QMouseEvent *event)
163 const bool ctrl_pressed =
164 QApplication::keyboardModifiers() & Qt::ControlModifier;
166 // Clear selection if control is not pressed and this item is unselected
167 if ((!mouse_down_item_ || !mouse_down_item_->selected()) &&
171 // Set the signal selection state if the item has been clicked
172 if (mouse_down_item_) {
174 mouse_down_item_->select(!mouse_down_item_->selected());
176 mouse_down_item_->select(true);
179 // Save the offsets of any signals which will be dragged
180 bool item_dragged = false;
181 const auto items = this->items();
182 for (auto &i : items)
188 // Do the background drag
195 void ViewWidget::mouse_left_release_event(QMouseEvent *event)
199 auto items = this->items();
200 const bool ctrl_pressed =
201 QApplication::keyboardModifiers() & Qt::ControlModifier;
203 // Unselect everything if control is not pressed
204 const shared_ptr<ViewItem> mouse_over =
205 get_mouse_over_item(event->pos());
207 for (auto &i : items)
211 view_.restack_all_trace_tree_items();
214 for (shared_ptr<ViewItem> i : items)
215 if (mouse_down_item_ != i)
218 if (mouse_down_item_)
219 item_clicked(mouse_down_item_);
223 item_dragging_ = false;
226 bool ViewWidget::touch_event(QTouchEvent *event)
233 bool ViewWidget::event(QEvent *event)
235 switch (event->type()) {
236 case QEvent::TouchBegin:
237 case QEvent::TouchUpdate:
238 case QEvent::TouchEnd:
239 if (touch_event(static_cast<QTouchEvent *>(event)))
247 return QWidget::event(event);
250 void ViewWidget::mousePressEvent(QMouseEvent *event)
254 mouse_down_point_ = event->pos();
255 mouse_down_item_ = get_mouse_over_item(event->pos());
257 if (event->button() & Qt::LeftButton)
258 mouse_left_press_event(event);
261 void ViewWidget::mouseReleaseEvent(QMouseEvent *event)
264 if (event->button() & Qt::LeftButton)
265 mouse_left_release_event(event);
267 mouse_down_point_ = QPoint(INT_MIN, INT_MIN);
268 mouse_down_item_ = nullptr;
271 void ViewWidget::mouseMoveEvent(QMouseEvent *event)
274 mouse_point_ = event->pos();
276 if (!event->buttons())
277 item_hover(get_mouse_over_item(event->pos()));
278 else if (event->buttons() & Qt::LeftButton) {
279 if (!item_dragging_) {
280 if ((event->pos() - mouse_down_point_).manhattanLength() <
281 QApplication::startDragDistance())
287 item_dragging_ = true;
291 drag_items(event->pos() - mouse_down_point_);
295 void ViewWidget::leaveEvent(QEvent*)
297 mouse_point_ = QPoint(-1, -1);