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();
54 void ViewWidget::item_hover(const shared_ptr<ViewItem> &item)
59 void ViewWidget::item_clicked(const shared_ptr<ViewItem> &item)
64 bool ViewWidget::accept_drag() const
66 const vector< shared_ptr<TimeItem> > items(view_.time_items());
67 const vector< shared_ptr<TraceTreeItem> > trace_tree_items(
68 view_.list_by_type<TraceTreeItem>());
70 const bool any_row_items_selected = any_of(
71 trace_tree_items.begin(), trace_tree_items.end(),
72 [](const shared_ptr<TraceTreeItem> &r) { return r->selected(); });
74 const bool any_time_items_selected = any_of(items.begin(), items.end(),
75 [](const shared_ptr<TimeItem> &i) { return i->selected(); });
77 if (any_row_items_selected && !any_time_items_selected)
79 // Check all the drag items share a common owner
80 TraceTreeItemOwner *item_owner = nullptr;
81 for (shared_ptr<TraceTreeItem> r : trace_tree_items)
84 item_owner = r->owner();
85 else if (item_owner != r->owner())
91 else if (any_time_items_selected && !any_row_items_selected)
96 // A background drag is beginning
100 bool ViewWidget::mouse_down() const
102 return mouse_down_point_.x() != INT_MIN &&
103 mouse_down_point_.y() != INT_MIN;
106 void ViewWidget::drag_items(const QPoint &delta)
108 bool item_dragged = false;
110 // Drag the row items
111 TraceTreeItemOwner *item_owner = nullptr;
112 const vector< shared_ptr<TraceTreeItem> > trace_tree_items(
113 view_.list_by_type<TraceTreeItem>());
114 for (shared_ptr<TraceTreeItem> r : trace_tree_items)
116 item_owner = r->owner();
119 // Ensure the trace is selected
125 item_owner->restack_items();
126 for (shared_ptr<TraceTreeItem> r : trace_tree_items)
127 r->animate_to_layout_v_offset();
130 // Drag the time items
131 const vector< shared_ptr<TimeItem> > items(view_.time_items());
132 for (auto &i : items)
138 // Do the background drag
143 void ViewWidget::drag()
147 void ViewWidget::drag_by(const QPoint &delta)
152 void ViewWidget::drag_release()
156 void ViewWidget::mouse_left_press_event(QMouseEvent *event)
160 const bool ctrl_pressed =
161 QApplication::keyboardModifiers() & Qt::ControlModifier;
163 // Clear selection if control is not pressed and this item is unselected
164 if ((!mouse_down_item_ || !mouse_down_item_->selected()) &&
168 // Set the signal selection state if the item has been clicked
169 if (mouse_down_item_) {
171 mouse_down_item_->select(!mouse_down_item_->selected());
173 mouse_down_item_->select(true);
176 // Save the offsets of any signals which will be dragged
177 bool item_dragged = false;
178 const auto items = this->items();
179 for (auto &i : items)
185 // Do the background drag
193 void ViewWidget::mouse_left_release_event(QMouseEvent *event)
197 auto items = this->items();
198 const bool ctrl_pressed =
199 QApplication::keyboardModifiers() & Qt::ControlModifier;
201 // Unselect everything if control is not pressed
202 const shared_ptr<ViewItem> mouse_over =
203 get_mouse_over_item(event->pos());
205 for (auto &i : items)
209 view_.restack_all_trace_tree_items();
213 for (shared_ptr<ViewItem> i : items)
214 if (mouse_down_item_ != i)
217 if (mouse_down_item_)
218 item_clicked(mouse_down_item_);
222 item_dragging_ = false;
225 bool ViewWidget::touch_event(QTouchEvent *e)
231 bool ViewWidget::event(QEvent *event)
233 switch (event->type()) {
234 case QEvent::TouchBegin:
235 case QEvent::TouchUpdate:
236 case QEvent::TouchEnd:
237 if (touch_event(static_cast<QTouchEvent *>(event)))
245 return QWidget::event(event);
248 void ViewWidget::mousePressEvent(QMouseEvent *event)
252 mouse_down_point_ = event->pos();
253 mouse_down_item_ = get_mouse_over_item(event->pos());
255 if (event->button() & Qt::LeftButton)
256 mouse_left_press_event(event);
259 void ViewWidget::mouseReleaseEvent(QMouseEvent *event)
262 if (event->button() & Qt::LeftButton)
263 mouse_left_release_event(event);
265 mouse_down_point_ = QPoint(INT_MIN, INT_MIN);
266 mouse_down_item_ = nullptr;
269 void ViewWidget::mouseMoveEvent(QMouseEvent *e)
272 mouse_point_ = e->pos();
275 item_hover(get_mouse_over_item(e->pos()));
276 else if (e->buttons() & Qt::LeftButton)
280 if ((e->pos() - mouse_down_point_).manhattanLength() <
281 QApplication::startDragDistance())
287 item_dragging_ = true;
291 drag_items(e->pos() - mouse_down_point_);
297 void ViewWidget::leaveEvent(QEvent*)
299 mouse_point_ = QPoint(-1, -1);