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1 | /* | |
2 | * This file is part of the PulseView project. | |
3 | * | |
4 | * Copyright (C) 2013 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 <extdef.h> | |
21 | ||
22 | #include <cassert> | |
23 | #include <cmath> | |
24 | ||
25 | #include <QApplication> | |
26 | #include <QFormLayout> | |
27 | #include <QKeyEvent> | |
28 | #include <QLineEdit> | |
29 | ||
30 | #include "trace.hpp" | |
31 | #include "tracepalette.hpp" | |
32 | #include "view.hpp" | |
33 | ||
34 | #include "pv/globalsettings.hpp" | |
35 | #include "pv/widgets/colourbutton.hpp" | |
36 | #include "pv/widgets/popup.hpp" | |
37 | ||
38 | using std::pair; | |
39 | using std::shared_ptr; | |
40 | ||
41 | namespace pv { | |
42 | namespace views { | |
43 | namespace TraceView { | |
44 | ||
45 | const QPen Trace::AxisPen(QColor(0, 0, 0, 30 * 256 / 100)); | |
46 | const int Trace::LabelHitPadding = 2; | |
47 | ||
48 | const QColor Trace::BrightGrayBGColour = QColor(0, 0, 0, 10 * 255 / 100); | |
49 | const QColor Trace::DarkGrayBGColour = QColor(0, 0, 0, 15 * 255 / 100); | |
50 | ||
51 | Trace::Trace(shared_ptr<data::SignalBase> channel) : | |
52 | base_(channel), | |
53 | popup_(nullptr), | |
54 | popup_form_(nullptr) | |
55 | { | |
56 | connect(channel.get(), SIGNAL(name_changed(const QString&)), | |
57 | this, SLOT(on_name_changed(const QString&))); | |
58 | connect(channel.get(), SIGNAL(colour_changed(const QColor&)), | |
59 | this, SLOT(on_colour_changed(const QColor&))); | |
60 | } | |
61 | ||
62 | void Trace::paint_label(QPainter &p, const QRect &rect, bool hover) | |
63 | { | |
64 | const int y = get_visual_y(); | |
65 | ||
66 | p.setBrush(base_->colour()); | |
67 | ||
68 | if (!enabled()) | |
69 | return; | |
70 | ||
71 | const QRectF r = label_rect(rect); | |
72 | ||
73 | // Paint the label | |
74 | const float label_arrow_length = r.height() / 2; | |
75 | const QPointF points[] = { | |
76 | r.topLeft(), | |
77 | QPointF(r.right() - label_arrow_length, r.top()), | |
78 | QPointF(r.right(), y), | |
79 | QPointF(r.right() - label_arrow_length, r.bottom()), | |
80 | r.bottomLeft() | |
81 | }; | |
82 | const QPointF highlight_points[] = { | |
83 | QPointF(r.left() + 1, r.top() + 1), | |
84 | QPointF(r.right() - label_arrow_length, r.top() + 1), | |
85 | QPointF(r.right() - 1, y), | |
86 | QPointF(r.right() - label_arrow_length, r.bottom() - 1), | |
87 | QPointF(r.left() + 1, r.bottom() - 1) | |
88 | }; | |
89 | ||
90 | if (selected()) { | |
91 | p.setPen(highlight_pen()); | |
92 | p.setBrush(Qt::transparent); | |
93 | p.drawPolygon(points, countof(points)); | |
94 | } | |
95 | ||
96 | p.setPen(Qt::transparent); | |
97 | p.setBrush(hover ? base_->colour().lighter() : base_->colour()); | |
98 | p.drawPolygon(points, countof(points)); | |
99 | ||
100 | p.setPen(base_->colour().lighter()); | |
101 | p.setBrush(Qt::transparent); | |
102 | p.drawPolygon(highlight_points, countof(highlight_points)); | |
103 | ||
104 | p.setPen(base_->colour().darker()); | |
105 | p.setBrush(Qt::transparent); | |
106 | p.drawPolygon(points, countof(points)); | |
107 | ||
108 | // Paint the text | |
109 | p.setPen(select_text_colour(base_->colour())); | |
110 | p.setFont(QApplication::font()); | |
111 | p.drawText(QRectF(r.x(), r.y(), | |
112 | r.width() - label_arrow_length, r.height()), | |
113 | Qt::AlignCenter | Qt::AlignVCenter, base_->name()); | |
114 | } | |
115 | ||
116 | QMenu* Trace::create_context_menu(QWidget *parent) | |
117 | { | |
118 | QMenu *const menu = ViewItem::create_context_menu(parent); | |
119 | ||
120 | return menu; | |
121 | } | |
122 | ||
123 | pv::widgets::Popup* Trace::create_popup(QWidget *parent) | |
124 | { | |
125 | using pv::widgets::Popup; | |
126 | ||
127 | popup_ = new Popup(parent); | |
128 | popup_->set_position(parent->mapToGlobal( | |
129 | point(parent->rect())), Popup::Right); | |
130 | ||
131 | create_popup_form(); | |
132 | ||
133 | connect(popup_, SIGNAL(closed()), this, SLOT(on_popup_closed())); | |
134 | ||
135 | return popup_; | |
136 | } | |
137 | ||
138 | QRectF Trace::label_rect(const QRectF &rect) const | |
139 | { | |
140 | QFontMetrics m(QApplication::font()); | |
141 | const QSize text_size( | |
142 | m.boundingRect(QRect(), 0, base_->name()).width(), m.height()); | |
143 | const QSizeF label_size( | |
144 | text_size.width() + LabelPadding.width() * 2, | |
145 | ceilf((text_size.height() + LabelPadding.height() * 2) / 2) * 2); | |
146 | const float half_height = label_size.height() / 2; | |
147 | return QRectF( | |
148 | rect.right() - half_height - label_size.width() - 0.5, | |
149 | get_visual_y() + 0.5f - half_height, | |
150 | label_size.width() + half_height, | |
151 | label_size.height()); | |
152 | } | |
153 | ||
154 | void Trace::paint_back(QPainter &p, ViewItemPaintParams &pp) | |
155 | { | |
156 | const View *view = owner_->view(); | |
157 | assert(view); | |
158 | ||
159 | if (view->coloured_bg()) | |
160 | p.setBrush(base_->bgcolour()); | |
161 | else | |
162 | p.setBrush(pp.next_bg_colour_state() ? BrightGrayBGColour : DarkGrayBGColour); | |
163 | ||
164 | p.setPen(QPen(Qt::NoPen)); | |
165 | ||
166 | const pair<int, int> extents = v_extents(); | |
167 | p.drawRect(pp.left(), get_visual_y() + extents.first, | |
168 | pp.width(), extents.second - extents.first); | |
169 | } | |
170 | ||
171 | void Trace::paint_axis(QPainter &p, ViewItemPaintParams &pp, int y) | |
172 | { | |
173 | p.setRenderHint(QPainter::Antialiasing, false); | |
174 | ||
175 | p.setPen(AxisPen); | |
176 | p.drawLine(QPointF(pp.left(), y), QPointF(pp.right(), y)); | |
177 | ||
178 | p.setRenderHint(QPainter::Antialiasing, true); | |
179 | } | |
180 | ||
181 | void Trace::add_colour_option(QWidget *parent, QFormLayout *form) | |
182 | { | |
183 | using pv::widgets::ColourButton; | |
184 | ||
185 | ColourButton *const colour_button = new ColourButton( | |
186 | TracePalette::Rows, TracePalette::Cols, parent); | |
187 | colour_button->set_palette(TracePalette::Colours); | |
188 | colour_button->set_colour(base_->colour()); | |
189 | connect(colour_button, SIGNAL(selected(const QColor&)), | |
190 | this, SLOT(on_colouredit_changed(const QColor&))); | |
191 | ||
192 | form->addRow(tr("Colour"), colour_button); | |
193 | } | |
194 | ||
195 | void Trace::create_popup_form() | |
196 | { | |
197 | // Clear the layout | |
198 | ||
199 | // Transfer the layout and the child widgets to a temporary widget | |
200 | // which we delete after the event was handled. This way, the layout | |
201 | // and all widgets contained therein are deleted after the event was | |
202 | // handled, leaving the parent popup_ time to handle the change. | |
203 | if (popup_form_) { | |
204 | QWidget *suicidal = new QWidget(); | |
205 | suicidal->setLayout(popup_form_); | |
206 | suicidal->deleteLater(); | |
207 | } | |
208 | ||
209 | // Repopulate the popup | |
210 | popup_form_ = new QFormLayout(popup_); | |
211 | popup_->setLayout(popup_form_); | |
212 | populate_popup_form(popup_, popup_form_); | |
213 | } | |
214 | ||
215 | void Trace::populate_popup_form(QWidget *parent, QFormLayout *form) | |
216 | { | |
217 | QLineEdit *const name_edit = new QLineEdit(parent); | |
218 | name_edit->setText(base_->name()); | |
219 | connect(name_edit, SIGNAL(textChanged(const QString&)), | |
220 | this, SLOT(on_nameedit_changed(const QString&))); | |
221 | form->addRow(tr("Name"), name_edit); | |
222 | ||
223 | add_colour_option(parent, form); | |
224 | } | |
225 | ||
226 | void Trace::set_name(QString name) | |
227 | { | |
228 | base_->set_name(name); | |
229 | } | |
230 | ||
231 | void Trace::set_colour(QColor colour) | |
232 | { | |
233 | base_->set_colour(colour); | |
234 | } | |
235 | ||
236 | void Trace::on_name_changed(const QString &text) | |
237 | { | |
238 | /* This event handler is called by SignalBase when the name was changed there */ | |
239 | (void)text; | |
240 | ||
241 | if (owner_) { | |
242 | owner_->extents_changed(true, false); | |
243 | owner_->row_item_appearance_changed(true, false); | |
244 | } | |
245 | } | |
246 | ||
247 | void Trace::on_colour_changed(const QColor &colour) | |
248 | { | |
249 | /* This event handler is called by SignalBase when the colour was changed there */ | |
250 | (void)colour; | |
251 | ||
252 | if (owner_) | |
253 | owner_->row_item_appearance_changed(true, true); | |
254 | } | |
255 | ||
256 | void Trace::on_popup_closed() | |
257 | { | |
258 | popup_ = nullptr; | |
259 | popup_form_ = nullptr; | |
260 | } | |
261 | ||
262 | void Trace::on_nameedit_changed(const QString &name) | |
263 | { | |
264 | /* This event handler notifies SignalBase that the name changed */ | |
265 | set_name(name); | |
266 | } | |
267 | ||
268 | void Trace::on_colouredit_changed(const QColor &colour) | |
269 | { | |
270 | /* This event handler notifies SignalBase that the colour changed */ | |
271 | set_colour(colour); | |
272 | } | |
273 | ||
274 | } // namespace TraceView | |
275 | } // namespace views | |
276 | } // namespace pv |