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1 | /* | |
2 | * This file is part of the PulseView project. | |
3 | * | |
4 | * Copyright (C) 2012 Joel Holdsworth <joel@airwebreathe.org.uk> | |
5 | * | |
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. | |
10 | * | |
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. | |
15 | * | |
16 | * You should have received a copy of the GNU General Public License | |
17 | * along with this program; if not, see <http://www.gnu.org/licenses/>. | |
18 | */ | |
19 | ||
20 | #include "header.hpp" | |
21 | #include "view.hpp" | |
22 | ||
23 | #include "signal.hpp" | |
24 | #include "tracegroup.hpp" | |
25 | ||
26 | #include <algorithm> | |
27 | #include <cassert> | |
28 | ||
29 | #include <boost/iterator/filter_iterator.hpp> | |
30 | ||
31 | #include <QApplication> | |
32 | #include <QMenu> | |
33 | #include <QMouseEvent> | |
34 | #include <QPainter> | |
35 | #include <QRect> | |
36 | ||
37 | #include <pv/session.hpp> | |
38 | #include <pv/widgets/popup.hpp> | |
39 | ||
40 | using boost::make_filter_iterator; | |
41 | ||
42 | using std::count_if; | |
43 | using std::dynamic_pointer_cast; | |
44 | using std::shared_ptr; | |
45 | using std::stable_sort; | |
46 | using std::vector; | |
47 | ||
48 | namespace pv { | |
49 | namespace views { | |
50 | namespace TraceView { | |
51 | ||
52 | const int Header::Padding = 12; | |
53 | const int Header::BaselineOffset = 5; | |
54 | ||
55 | static bool item_selected(shared_ptr<TraceTreeItem> r) | |
56 | { | |
57 | return r->selected(); | |
58 | } | |
59 | ||
60 | Header::Header(View &parent) : | |
61 | MarginWidget(parent) | |
62 | { | |
63 | } | |
64 | ||
65 | QSize Header::sizeHint() const | |
66 | { | |
67 | QRectF max_rect(-Padding, 0, Padding, 0); | |
68 | const vector<shared_ptr<TraceTreeItem>> items( | |
69 | view_.list_by_type<TraceTreeItem>()); | |
70 | for (auto &i : items) | |
71 | if (i->enabled()) | |
72 | max_rect = max_rect.united(i->label_rect(QRect())); | |
73 | return QSize(max_rect.width() + Padding + BaselineOffset, 0); | |
74 | } | |
75 | ||
76 | QSize Header::extended_size_hint() const | |
77 | { | |
78 | return sizeHint() + QSize(ViewItem::HighlightRadius, 0); | |
79 | } | |
80 | ||
81 | vector< shared_ptr<ViewItem> > Header::items() | |
82 | { | |
83 | const vector<shared_ptr<TraceTreeItem>> items( | |
84 | view_.list_by_type<TraceTreeItem>()); | |
85 | return vector< shared_ptr<ViewItem> >(items.begin(), items.end()); | |
86 | } | |
87 | ||
88 | shared_ptr<ViewItem> Header::get_mouse_over_item(const QPoint &pt) | |
89 | { | |
90 | const QRect r(0, 0, width() - BaselineOffset, height()); | |
91 | const vector<shared_ptr<TraceTreeItem>> items( | |
92 | view_.list_by_type<TraceTreeItem>()); | |
93 | for (auto i = items.rbegin(); i != items.rend(); i++) | |
94 | if ((*i)->enabled() && (*i)->label_rect(r).contains(pt)) | |
95 | return *i; | |
96 | return shared_ptr<TraceTreeItem>(); | |
97 | } | |
98 | ||
99 | void Header::paintEvent(QPaintEvent*) | |
100 | { | |
101 | // The trace labels are not drawn with the arrows exactly on the | |
102 | // left edge of the widget, because then the selection shadow | |
103 | // would be clipped away. | |
104 | const QRect rect(0, 0, width() - BaselineOffset, height()); | |
105 | ||
106 | vector< shared_ptr<RowItem> > items(view_.list_by_type<RowItem>()); | |
107 | ||
108 | stable_sort(items.begin(), items.end(), | |
109 | [](const shared_ptr<RowItem> &a, const shared_ptr<RowItem> &b) { | |
110 | return a->point(QRect()).y() < b->point(QRect()).y(); }); | |
111 | ||
112 | QPainter painter(this); | |
113 | painter.setRenderHint(QPainter::Antialiasing); | |
114 | ||
115 | for (const shared_ptr<RowItem> r : items) { | |
116 | assert(r); | |
117 | ||
118 | const bool highlight = !item_dragging_ && | |
119 | r->label_rect(rect).contains(mouse_point_); | |
120 | r->paint_label(painter, rect, highlight); | |
121 | } | |
122 | ||
123 | painter.end(); | |
124 | } | |
125 | ||
126 | void Header::contextMenuEvent(QContextMenuEvent *event) | |
127 | { | |
128 | const shared_ptr<ViewItem> r = get_mouse_over_item(mouse_point_); | |
129 | if (!r) | |
130 | return; | |
131 | ||
132 | QMenu *menu = r->create_context_menu(this); | |
133 | if (!menu) | |
134 | menu = new QMenu(this); | |
135 | ||
136 | const vector< shared_ptr<TraceTreeItem> > items( | |
137 | view_.list_by_type<TraceTreeItem>()); | |
138 | if (count_if(items.begin(), items.end(), item_selected) > 1) { | |
139 | menu->addSeparator(); | |
140 | ||
141 | QAction *const group = new QAction(tr("Group"), this); | |
142 | QList<QKeySequence> shortcuts; | |
143 | shortcuts.append(QKeySequence(Qt::ControlModifier | Qt::Key_G)); | |
144 | group->setShortcuts(shortcuts); | |
145 | connect(group, SIGNAL(triggered()), this, SLOT(on_group())); | |
146 | menu->addAction(group); | |
147 | } | |
148 | ||
149 | menu->exec(event->globalPos()); | |
150 | } | |
151 | ||
152 | void Header::keyPressEvent(QKeyEvent *event) | |
153 | { | |
154 | assert(event); | |
155 | ||
156 | MarginWidget::keyPressEvent(event); | |
157 | ||
158 | if (event->key() == Qt::Key_G && event->modifiers() == Qt::ControlModifier) | |
159 | on_group(); | |
160 | else if (event->key() == Qt::Key_U && event->modifiers() == Qt::ControlModifier) | |
161 | on_ungroup(); | |
162 | } | |
163 | ||
164 | void Header::on_group() | |
165 | { | |
166 | const vector< shared_ptr<TraceTreeItem> > items( | |
167 | view_.list_by_type<TraceTreeItem>()); | |
168 | vector< shared_ptr<TraceTreeItem> > selected_items( | |
169 | make_filter_iterator(item_selected, items.begin(), items.end()), | |
170 | make_filter_iterator(item_selected, items.end(), items.end())); | |
171 | stable_sort(selected_items.begin(), selected_items.end(), | |
172 | [](const shared_ptr<TraceTreeItem> &a, const shared_ptr<TraceTreeItem> &b) { | |
173 | return a->visual_v_offset() < b->visual_v_offset(); }); | |
174 | ||
175 | shared_ptr<TraceGroup> group(new TraceGroup()); | |
176 | shared_ptr<TraceTreeItem> mouse_down_item( | |
177 | dynamic_pointer_cast<TraceTreeItem>(mouse_down_item_)); | |
178 | shared_ptr<TraceTreeItem> focus_item( | |
179 | mouse_down_item ? mouse_down_item : selected_items.front()); | |
180 | ||
181 | assert(focus_item); | |
182 | assert(focus_item->owner()); | |
183 | focus_item->owner()->add_child_item(group); | |
184 | ||
185 | // Set the group v_offset here before reparenting | |
186 | group->force_to_v_offset(focus_item->layout_v_offset() + | |
187 | focus_item->v_extents().first); | |
188 | ||
189 | for (size_t i = 0; i < selected_items.size(); i++) { | |
190 | const shared_ptr<TraceTreeItem> &r = selected_items[i]; | |
191 | assert(r->owner()); | |
192 | r->owner()->remove_child_item(r); | |
193 | group->add_child_item(r); | |
194 | ||
195 | // Put the items at 1-pixel offsets, so that restack will | |
196 | // stack them in the right order | |
197 | r->set_layout_v_offset(i); | |
198 | } | |
199 | } | |
200 | ||
201 | void Header::on_ungroup() | |
202 | { | |
203 | bool restart; | |
204 | do { | |
205 | restart = false; | |
206 | const vector< shared_ptr<TraceGroup> > groups( | |
207 | view_.list_by_type<TraceGroup>()); | |
208 | for (const shared_ptr<TraceGroup> tg : groups) | |
209 | if (tg->selected()) { | |
210 | tg->ungroup(); | |
211 | restart = true; | |
212 | break; | |
213 | } | |
214 | } while (restart); | |
215 | } | |
216 | ||
217 | } // namespace TraceView | |
218 | } // namespace views | |
219 | } // namespace pv |