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40aca27e JH |
1 | /* |
2 | * This file is part of the PulseView project. | |
3 | * | |
4 | * Copyright (C) 2014 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, write to the Free Software | |
18 | * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA | |
19 | */ | |
20 | ||
e9e4e5e7 JH |
21 | #include <QApplication> |
22 | #include <QMouseEvent> | |
c9743553 | 23 | #include <QTouchEvent> |
b434cbaf JH |
24 | |
25 | #include "rowitem.hpp" | |
40aca27e JH |
26 | #include "view.hpp" |
27 | #include "viewwidget.hpp" | |
28 | ||
b434cbaf JH |
29 | using std::any_of; |
30 | using std::shared_ptr; | |
31 | using std::vector; | |
32 | ||
40aca27e JH |
33 | namespace pv { |
34 | namespace view { | |
35 | ||
36 | ViewWidget::ViewWidget(View &parent) : | |
37 | QWidget(&parent), | |
e9e4e5e7 | 38 | view_(parent), |
803cdac4 | 39 | item_dragging_(false) |
40aca27e | 40 | { |
e9e4e5e7 | 41 | setFocusPolicy(Qt::ClickFocus); |
c9743553 | 42 | setAttribute(Qt::WA_AcceptTouchEvents, true); |
e9e4e5e7 JH |
43 | setMouseTracking(true); |
44 | } | |
45 | ||
46 | void ViewWidget::clear_selection() | |
47 | { | |
48 | const auto items = this->items(); | |
49 | for (auto &i : items) | |
50 | i->select(false); | |
51 | update(); | |
52 | } | |
53 | ||
54 | void ViewWidget::item_clicked(const shared_ptr<ViewItem> &item) | |
55 | { | |
56 | (void)item; | |
40aca27e JH |
57 | } |
58 | ||
b434cbaf JH |
59 | bool ViewWidget::accept_drag() const |
60 | { | |
61 | const vector< shared_ptr<TimeItem> > items(view_.time_items()); | |
62 | ||
63 | const bool any_row_items_selected = any_of(view_.begin(), view_.end(), | |
64 | [](const shared_ptr<RowItem> &r) { return r->selected(); }); | |
65 | ||
66 | const bool any_time_items_selected = any_of(items.begin(), items.end(), | |
67 | [](const shared_ptr<TimeItem> &i) { return i->selected(); }); | |
68 | ||
69 | if (any_row_items_selected && !any_time_items_selected) | |
70 | { | |
71 | // Check all the drag items share a common owner | |
72 | RowItemOwner *item_owner = nullptr; | |
73 | for (shared_ptr<RowItem> r : view_) | |
74 | if (r->dragging()) { | |
75 | if (!item_owner) | |
76 | item_owner = r->owner(); | |
77 | else if(item_owner != r->owner()) | |
78 | return false; | |
79 | } | |
80 | ||
81 | return true; | |
82 | } | |
83 | else if (any_time_items_selected && !any_row_items_selected) | |
84 | { | |
85 | return true; | |
86 | } | |
87 | ||
88 | return false; | |
89 | } | |
90 | ||
1f1edc09 JH |
91 | bool ViewWidget::mouse_down() const |
92 | { | |
93 | return mouse_down_point_.x() != INT_MIN && | |
94 | mouse_down_point_.y() != INT_MIN; | |
95 | } | |
96 | ||
1dffa582 JH |
97 | void ViewWidget::drag_items(const QPoint &delta) |
98 | { | |
99 | // Drag the row items | |
100 | RowItemOwner *item_owner = nullptr; | |
101 | for (std::shared_ptr<RowItem> r : view_) | |
102 | if (r->dragging()) { | |
103 | item_owner = r->owner(); | |
104 | r->drag_by(delta); | |
105 | ||
106 | // Ensure the trace is selected | |
107 | r->select(); | |
108 | } | |
109 | ||
110 | if (item_owner) { | |
111 | item_owner->restack_items(); | |
112 | for (const auto &r : *item_owner) | |
113 | r->animate_to_layout_v_offset(); | |
114 | } | |
115 | ||
116 | // Drag the time items | |
117 | const vector< shared_ptr<TimeItem> > items(view_.time_items()); | |
118 | for (auto &i : items) | |
119 | if (i->dragging()) | |
120 | i->drag_by(delta); | |
121 | } | |
122 | ||
e9e4e5e7 JH |
123 | void ViewWidget::mouse_left_press_event(QMouseEvent *event) |
124 | { | |
125 | (void)event; | |
126 | ||
127 | const bool ctrl_pressed = | |
128 | QApplication::keyboardModifiers() & Qt::ControlModifier; | |
129 | ||
130 | // Clear selection if control is not pressed and this item is unselected | |
131 | if ((!mouse_down_item_ || !mouse_down_item_->selected()) && | |
132 | !ctrl_pressed) | |
133 | clear_selection(); | |
134 | ||
135 | // Set the signal selection state if the item has been clicked | |
136 | if (mouse_down_item_) { | |
137 | if (ctrl_pressed) | |
138 | mouse_down_item_->select(!mouse_down_item_->selected()); | |
139 | else | |
140 | mouse_down_item_->select(true); | |
141 | } | |
142 | ||
143 | // Save the offsets of any signals which will be dragged | |
144 | const auto items = this->items(); | |
145 | for (auto &i : items) | |
146 | if (i->selected()) | |
147 | i->drag(); | |
148 | ||
149 | selection_changed(); | |
150 | update(); | |
151 | } | |
152 | ||
153 | void ViewWidget::mouse_left_release_event(QMouseEvent *event) | |
154 | { | |
155 | assert(event); | |
156 | ||
157 | auto items = this->items(); | |
158 | const bool ctrl_pressed = | |
159 | QApplication::keyboardModifiers() & Qt::ControlModifier; | |
160 | ||
161 | // Unselect everything if control is not pressed | |
162 | const shared_ptr<ViewItem> mouse_over = | |
163 | get_mouse_over_item(event->pos()); | |
164 | ||
165 | for (auto &i : items) | |
166 | i->drag_release(); | |
167 | ||
803cdac4 | 168 | if (item_dragging_) |
e9e4e5e7 JH |
169 | view_.restack_all_row_items(); |
170 | else | |
171 | { | |
172 | if (!ctrl_pressed) { | |
173 | for (shared_ptr<ViewItem> i : items) | |
174 | if (mouse_down_item_ != i) | |
175 | i->select(false); | |
176 | ||
177 | if (mouse_down_item_) | |
178 | item_clicked(mouse_down_item_); | |
179 | } | |
180 | } | |
181 | ||
803cdac4 | 182 | item_dragging_ = false; |
e9e4e5e7 JH |
183 | } |
184 | ||
c9743553 JH |
185 | bool ViewWidget::touch_event(QTouchEvent *e) |
186 | { | |
187 | (void)e; | |
188 | return false; | |
189 | } | |
190 | ||
191 | bool ViewWidget::event(QEvent *event) | |
192 | { | |
193 | switch (event->type()) { | |
194 | case QEvent::TouchBegin: | |
195 | case QEvent::TouchUpdate: | |
196 | case QEvent::TouchEnd: | |
197 | if (touch_event(static_cast<QTouchEvent *>(event))) | |
198 | return true; | |
199 | break; | |
200 | ||
201 | default: | |
202 | break; | |
203 | } | |
204 | ||
205 | return QWidget::event(event); | |
206 | } | |
207 | ||
e9e4e5e7 JH |
208 | void ViewWidget::mousePressEvent(QMouseEvent *event) |
209 | { | |
210 | assert(event); | |
211 | ||
212 | mouse_down_point_ = event->pos(); | |
213 | mouse_down_item_ = get_mouse_over_item(event->pos()); | |
214 | ||
215 | if (event->button() & Qt::LeftButton) | |
216 | mouse_left_press_event(event); | |
217 | } | |
218 | ||
219 | void ViewWidget::mouseReleaseEvent(QMouseEvent *event) | |
220 | { | |
221 | assert(event); | |
222 | if (event->button() & Qt::LeftButton) | |
223 | mouse_left_release_event(event); | |
224 | ||
1f1edc09 | 225 | mouse_down_point_ = QPoint(INT_MIN, INT_MIN); |
e9e4e5e7 JH |
226 | mouse_down_item_ = nullptr; |
227 | } | |
228 | ||
229 | void ViewWidget::mouseMoveEvent(QMouseEvent *event) | |
230 | { | |
231 | assert(event); | |
232 | mouse_point_ = event->pos(); | |
233 | ||
234 | if (!(event->buttons() & Qt::LeftButton)) | |
235 | return; | |
236 | ||
237 | if ((event->pos() - mouse_down_point_).manhattanLength() < | |
238 | QApplication::startDragDistance()) | |
239 | return; | |
240 | ||
241 | if (!accept_drag()) | |
242 | return; | |
243 | ||
244 | // Do the drag | |
803cdac4 | 245 | item_dragging_ = true; |
e9e4e5e7 JH |
246 | drag_items(event->pos() - mouse_down_point_); |
247 | ||
248 | update(); | |
249 | } | |
250 | ||
251 | void ViewWidget::leaveEvent(QEvent*) | |
252 | { | |
253 | mouse_point_ = QPoint(-1, -1); | |
254 | update(); | |
255 | } | |
256 | ||
40aca27e JH |
257 | } // namespace view |
258 | } // namespace pv |