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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, write to the Free Software | |
18 | * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA | |
19 | */ | |
20 | ||
21 | #include <extdef.h> | |
22 | ||
23 | #include <assert.h> | |
24 | #include <cmath> | |
25 | ||
26 | #include <QApplication> | |
27 | #include <QFormLayout> | |
28 | #include <QKeyEvent> | |
29 | #include <QLineEdit> | |
30 | ||
31 | #include "trace.hpp" | |
32 | #include "tracepalette.hpp" | |
33 | #include "view.hpp" | |
34 | ||
35 | #include <pv/widgets/colourbutton.hpp> | |
36 | #include <pv/widgets/popup.hpp> | |
37 | ||
38 | namespace pv { | |
39 | namespace views { | |
40 | namespace TraceView { | |
41 | ||
42 | const QPen Trace::AxisPen(QColor(0, 0, 0, 30*256/100)); | |
43 | const int Trace::LabelHitPadding = 2; | |
44 | ||
45 | const QColor Trace::BrightGrayBGColour = QColor(0, 0, 0, 10*255/100); | |
46 | const QColor Trace::DarkGrayBGColour = QColor(0, 0, 0, 15*255/100); | |
47 | ||
48 | Trace::Trace(std::shared_ptr<data::SignalBase> channel) : | |
49 | base_(channel), | |
50 | coloured_bg_(true), // Default setting is set in MainWindow::setup_ui() | |
51 | popup_(nullptr), | |
52 | popup_form_(nullptr) | |
53 | { | |
54 | connect(channel.get(), SIGNAL(name_changed(const QString&)), | |
55 | this, SLOT(on_name_changed(const QString&))); | |
56 | connect(channel.get(), SIGNAL(colour_changed(const QColor&)), | |
57 | this, SLOT(on_colour_changed(const QColor&))); | |
58 | } | |
59 | ||
60 | void Trace::set_coloured_bg(bool state) | |
61 | { | |
62 | coloured_bg_ = state; | |
63 | } | |
64 | ||
65 | void Trace::paint_label(QPainter &p, const QRect &rect, bool hover) | |
66 | { | |
67 | const int y = get_visual_y(); | |
68 | ||
69 | p.setBrush(base_->colour()); | |
70 | ||
71 | if (!enabled()) | |
72 | return; | |
73 | ||
74 | const QRectF r = label_rect(rect); | |
75 | ||
76 | // Paint the label | |
77 | const float label_arrow_length = r.height() / 2; | |
78 | const QPointF points[] = { | |
79 | r.topLeft(), | |
80 | QPointF(r.right() - label_arrow_length, r.top()), | |
81 | QPointF(r.right(), y), | |
82 | QPointF(r.right() - label_arrow_length, r.bottom()), | |
83 | r.bottomLeft() | |
84 | }; | |
85 | const QPointF highlight_points[] = { | |
86 | QPointF(r.left() + 1, r.top() + 1), | |
87 | QPointF(r.right() - label_arrow_length, r.top() + 1), | |
88 | QPointF(r.right() - 1, y), | |
89 | QPointF(r.right() - label_arrow_length, r.bottom() - 1), | |
90 | QPointF(r.left() + 1, r.bottom() - 1) | |
91 | }; | |
92 | ||
93 | if (selected()) { | |
94 | p.setPen(highlight_pen()); | |
95 | p.setBrush(Qt::transparent); | |
96 | p.drawPolygon(points, countof(points)); | |
97 | } | |
98 | ||
99 | p.setPen(Qt::transparent); | |
100 | p.setBrush(hover ? base_->colour().lighter() : base_->colour()); | |
101 | p.drawPolygon(points, countof(points)); | |
102 | ||
103 | p.setPen(base_->colour().lighter()); | |
104 | p.setBrush(Qt::transparent); | |
105 | p.drawPolygon(highlight_points, countof(highlight_points)); | |
106 | ||
107 | p.setPen(base_->colour().darker()); | |
108 | p.setBrush(Qt::transparent); | |
109 | p.drawPolygon(points, countof(points)); | |
110 | ||
111 | // Paint the text | |
112 | p.setPen(select_text_colour(base_->colour())); | |
113 | p.setFont(QApplication::font()); | |
114 | p.drawText(QRectF(r.x(), r.y(), | |
115 | r.width() - label_arrow_length, r.height()), | |
116 | Qt::AlignCenter | Qt::AlignVCenter, base_->name()); | |
117 | } | |
118 | ||
119 | QMenu* Trace::create_context_menu(QWidget *parent) | |
120 | { | |
121 | QMenu *const menu = ViewItem::create_context_menu(parent); | |
122 | ||
123 | return menu; | |
124 | } | |
125 | ||
126 | pv::widgets::Popup* Trace::create_popup(QWidget *parent) | |
127 | { | |
128 | using pv::widgets::Popup; | |
129 | ||
130 | popup_ = new Popup(parent); | |
131 | popup_->set_position(parent->mapToGlobal( | |
132 | point(parent->rect())), Popup::Right); | |
133 | ||
134 | create_popup_form(); | |
135 | ||
136 | connect(popup_, SIGNAL(closed()), | |
137 | this, SLOT(on_popup_closed())); | |
138 | ||
139 | return popup_; | |
140 | } | |
141 | ||
142 | QRectF Trace::label_rect(const QRectF &rect) const | |
143 | { | |
144 | QFontMetrics m(QApplication::font()); | |
145 | const QSize text_size( | |
146 | m.boundingRect(QRect(), 0, base_->name()).width(), m.height()); | |
147 | const QSizeF label_size( | |
148 | text_size.width() + LabelPadding.width() * 2, | |
149 | ceilf((text_size.height() + LabelPadding.height() * 2) / 2) * 2); | |
150 | const float half_height = label_size.height() / 2; | |
151 | return QRectF( | |
152 | rect.right() - half_height - label_size.width() - 0.5, | |
153 | get_visual_y() + 0.5f - half_height, | |
154 | label_size.width() + half_height, | |
155 | label_size.height()); | |
156 | } | |
157 | ||
158 | void Trace::paint_back(QPainter &p, const ViewItemPaintParams &pp) | |
159 | { | |
160 | if (coloured_bg_) | |
161 | p.setBrush(base_->bgcolour()); | |
162 | else | |
163 | p.setBrush(bgcolour_state_ ? BrightGrayBGColour : DarkGrayBGColour); | |
164 | ||
165 | p.setPen(QPen(Qt::NoPen)); | |
166 | ||
167 | const std::pair<int, int> extents = v_extents(); | |
168 | ||
169 | const int x = 0; | |
170 | const int y = get_visual_y() + extents.first; | |
171 | const int w = pp.right() - pp.left(); | |
172 | const int h = extents.second - extents.first; | |
173 | ||
174 | p.drawRect(x, y, w, h); | |
175 | } | |
176 | ||
177 | void Trace::paint_axis(QPainter &p, const ViewItemPaintParams &pp, int y) | |
178 | { | |
179 | p.setRenderHint(QPainter::Antialiasing, false); | |
180 | ||
181 | p.setPen(AxisPen); | |
182 | p.drawLine(QPointF(pp.left(), y), QPointF(pp.right(), y)); | |
183 | ||
184 | p.setRenderHint(QPainter::Antialiasing, true); | |
185 | } | |
186 | ||
187 | void Trace::add_colour_option(QWidget *parent, QFormLayout *form) | |
188 | { | |
189 | using pv::widgets::ColourButton; | |
190 | ||
191 | ColourButton *const colour_button = new ColourButton( | |
192 | TracePalette::Rows, TracePalette::Cols, parent); | |
193 | colour_button->set_palette(TracePalette::Colours); | |
194 | colour_button->set_colour(base_->colour()); | |
195 | connect(colour_button, SIGNAL(selected(const QColor&)), | |
196 | this, SLOT(on_colouredit_changed(const QColor&))); | |
197 | ||
198 | form->addRow(tr("Colour"), colour_button); | |
199 | } | |
200 | ||
201 | void Trace::create_popup_form() | |
202 | { | |
203 | // Clear the layout | |
204 | ||
205 | // Transfer the layout and the child widgets to a temporary widget | |
206 | // which we delete after the event was handled. This way, the layout | |
207 | // and all widgets contained therein are deleted after the event was | |
208 | // handled, leaving the parent popup_ time to handle the change. | |
209 | if (popup_form_) { | |
210 | QWidget *suicidal = new QWidget(); | |
211 | suicidal->setLayout(popup_form_); | |
212 | suicidal->deleteLater(); | |
213 | } | |
214 | ||
215 | // Repopulate the popup | |
216 | popup_form_ = new QFormLayout(popup_); | |
217 | popup_->setLayout(popup_form_); | |
218 | populate_popup_form(popup_, popup_form_); | |
219 | } | |
220 | ||
221 | void Trace::populate_popup_form(QWidget *parent, QFormLayout *form) | |
222 | { | |
223 | QLineEdit *const name_edit = new QLineEdit(parent); | |
224 | name_edit->setText(base_->name()); | |
225 | connect(name_edit, SIGNAL(textChanged(const QString&)), | |
226 | this, SLOT(on_nameedit_changed(const QString&))); | |
227 | form->addRow(tr("Name"), name_edit); | |
228 | ||
229 | add_colour_option(parent, form); | |
230 | } | |
231 | ||
232 | void Trace::set_name(QString name) | |
233 | { | |
234 | base_->set_name(name); | |
235 | } | |
236 | ||
237 | void Trace::set_colour(QColor colour) | |
238 | { | |
239 | base_->set_colour(colour); | |
240 | } | |
241 | ||
242 | void Trace::on_name_changed(const QString &text) | |
243 | { | |
244 | /* This event handler is called by SignalBase when the name was changed there */ | |
245 | (void)text; | |
246 | ||
247 | if (owner_) { | |
248 | owner_->extents_changed(true, false); | |
249 | owner_->row_item_appearance_changed(true, false); | |
250 | } | |
251 | } | |
252 | ||
253 | void Trace::on_colour_changed(const QColor &colour) | |
254 | { | |
255 | /* This event handler is called by SignalBase when the colour was changed there */ | |
256 | (void)colour; | |
257 | ||
258 | if (owner_) | |
259 | owner_->row_item_appearance_changed(true, true); | |
260 | } | |
261 | ||
262 | void Trace::on_popup_closed() | |
263 | { | |
264 | popup_ = nullptr; | |
265 | popup_form_ = nullptr; | |
266 | } | |
267 | ||
268 | void Trace::on_nameedit_changed(const QString &name) | |
269 | { | |
270 | /* This event handler notifies SignalBase that the name changed */ | |
271 | set_name(name); | |
272 | } | |
273 | ||
274 | void Trace::on_colouredit_changed(const QColor &colour) | |
275 | { | |
276 | /* This event handler notifies SignalBase that the colour changed */ | |
277 | set_colour(colour); | |
278 | } | |
279 | ||
280 | } // namespace TraceView | |
281 | } // namespace views | |
282 | } // namespace pv |