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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 view { | |
40 | ||
41 | const QPen Trace::AxisPen(QColor(128, 128, 128, 64)); | |
42 | const int Trace::LabelHitPadding = 2; | |
43 | ||
44 | const QColor Trace::DarkBGColour(235, 235, 235); // Quite light grey | |
45 | const QColor Trace::BrightBGColour(245, 245, 245); // Very light grey | |
46 | ||
47 | Trace::Trace(QString name) : | |
48 | name_(name), | |
49 | coloured_bg_(true), // Default setting is set in MainWindow::setup_ui() | |
50 | popup_(nullptr), | |
51 | popup_form_(nullptr) | |
52 | { | |
53 | } | |
54 | ||
55 | QString Trace::name() const | |
56 | { | |
57 | return name_; | |
58 | } | |
59 | ||
60 | void Trace::set_name(QString name) | |
61 | { | |
62 | name_ = name; | |
63 | } | |
64 | ||
65 | QColor Trace::colour() const | |
66 | { | |
67 | return colour_; | |
68 | } | |
69 | ||
70 | void Trace::set_colour(QColor colour) | |
71 | { | |
72 | colour_ = colour; | |
73 | ||
74 | bgcolour_ = colour; | |
75 | bgcolour_.setAlpha(20); | |
76 | } | |
77 | ||
78 | void Trace::set_coloured_bg(bool state) | |
79 | { | |
80 | coloured_bg_ = state; | |
81 | } | |
82 | ||
83 | void Trace::paint_label(QPainter &p, const QRect &rect, bool hover) | |
84 | { | |
85 | const int y = get_visual_y(); | |
86 | ||
87 | p.setBrush(colour_); | |
88 | ||
89 | if (!enabled()) | |
90 | return; | |
91 | ||
92 | const QRectF r = label_rect(rect); | |
93 | ||
94 | // Paint the label | |
95 | const float label_arrow_length = r.height() / 2; | |
96 | const QPointF points[] = { | |
97 | r.topLeft(), | |
98 | QPointF(r.right() - label_arrow_length, r.top()), | |
99 | QPointF(r.right(), y), | |
100 | QPointF(r.right() - label_arrow_length, r.bottom()), | |
101 | r.bottomLeft() | |
102 | }; | |
103 | const QPointF highlight_points[] = { | |
104 | QPointF(r.left() + 1, r.top() + 1), | |
105 | QPointF(r.right() - label_arrow_length, r.top() + 1), | |
106 | QPointF(r.right() - 1, y), | |
107 | QPointF(r.right() - label_arrow_length, r.bottom() - 1), | |
108 | QPointF(r.left() + 1, r.bottom() - 1) | |
109 | }; | |
110 | ||
111 | if (selected()) { | |
112 | p.setPen(highlight_pen()); | |
113 | p.setBrush(Qt::transparent); | |
114 | p.drawPolygon(points, countof(points)); | |
115 | } | |
116 | ||
117 | p.setPen(Qt::transparent); | |
118 | p.setBrush(hover ? colour_.lighter() : colour_); | |
119 | p.drawPolygon(points, countof(points)); | |
120 | ||
121 | p.setPen(colour_.lighter()); | |
122 | p.setBrush(Qt::transparent); | |
123 | p.drawPolygon(highlight_points, countof(highlight_points)); | |
124 | ||
125 | p.setPen(colour_.darker()); | |
126 | p.setBrush(Qt::transparent); | |
127 | p.drawPolygon(points, countof(points)); | |
128 | ||
129 | // Paint the text | |
130 | p.setPen(select_text_colour(colour_)); | |
131 | p.setFont(QApplication::font()); | |
132 | p.drawText(QRectF(r.x(), r.y(), | |
133 | r.width() - label_arrow_length, r.height()), | |
134 | Qt::AlignCenter | Qt::AlignVCenter, name_); | |
135 | } | |
136 | ||
137 | QMenu* Trace::create_context_menu(QWidget *parent) | |
138 | { | |
139 | QMenu *const menu = ViewItem::create_context_menu(parent); | |
140 | ||
141 | return menu; | |
142 | } | |
143 | ||
144 | pv::widgets::Popup* Trace::create_popup(QWidget *parent) | |
145 | { | |
146 | using pv::widgets::Popup; | |
147 | ||
148 | popup_ = new Popup(parent); | |
149 | popup_->set_position(parent->mapToGlobal( | |
150 | point(parent->rect())), Popup::Right); | |
151 | ||
152 | create_popup_form(); | |
153 | ||
154 | connect(popup_, SIGNAL(closed()), | |
155 | this, SLOT(on_popup_closed())); | |
156 | ||
157 | return popup_; | |
158 | } | |
159 | ||
160 | QRectF Trace::label_rect(const QRectF &rect) const | |
161 | { | |
162 | using pv::view::View; | |
163 | ||
164 | QFontMetrics m(QApplication::font()); | |
165 | const QSize text_size( | |
166 | m.boundingRect(QRect(), 0, name_).width(), m.height()); | |
167 | const QSizeF label_size( | |
168 | text_size.width() + LabelPadding.width() * 2, | |
169 | ceilf((text_size.height() + LabelPadding.height() * 2) / 2) * 2); | |
170 | const float half_height = label_size.height() / 2; | |
171 | return QRectF( | |
172 | rect.right() - half_height - label_size.width() - 0.5, | |
173 | get_visual_y() + 0.5f - half_height, | |
174 | label_size.width() + half_height, | |
175 | label_size.height()); | |
176 | } | |
177 | ||
178 | void Trace::paint_back(QPainter &p, const ViewItemPaintParams &pp) | |
179 | { | |
180 | if (coloured_bg_) | |
181 | p.setBrush(bgcolour_); | |
182 | else | |
183 | p.setBrush(bgcolour_state_ ? BrightBGColour : DarkBGColour); | |
184 | ||
185 | p.setPen(QPen(Qt::NoPen)); | |
186 | ||
187 | const std::pair<int, int> extents = v_extents(); | |
188 | ||
189 | const int x = 0; | |
190 | const int y = get_visual_y() + extents.first; | |
191 | const int w = pp.right() - pp.left(); | |
192 | const int h = extents.second - extents.first; | |
193 | ||
194 | p.drawRect(x, y, w, h); | |
195 | } | |
196 | ||
197 | void Trace::paint_axis(QPainter &p, const ViewItemPaintParams &pp, int y) | |
198 | { | |
199 | p.setPen(AxisPen); | |
200 | p.drawLine(QPointF(pp.left(), y + 0.5f), QPointF(pp.right(), y + 0.5f)); | |
201 | } | |
202 | ||
203 | void Trace::add_colour_option(QWidget *parent, QFormLayout *form) | |
204 | { | |
205 | using pv::widgets::ColourButton; | |
206 | ||
207 | ColourButton *const colour_button = new ColourButton( | |
208 | TracePalette::Rows, TracePalette::Cols, parent); | |
209 | colour_button->set_palette(TracePalette::Colours); | |
210 | colour_button->set_colour(colour_); | |
211 | connect(colour_button, SIGNAL(selected(const QColor&)), | |
212 | this, SLOT(on_colour_changed(const QColor&))); | |
213 | ||
214 | form->addRow(tr("Colour"), colour_button); | |
215 | } | |
216 | ||
217 | void Trace::create_popup_form() | |
218 | { | |
219 | // Clear the layout | |
220 | ||
221 | // Transfer the layout and the child widgets to a temporary widget | |
222 | // which then goes out of scope destroying the layout and all the child | |
223 | // widgets. | |
224 | if (popup_form_) | |
225 | QWidget().setLayout(popup_form_); | |
226 | ||
227 | // Repopulate the popup | |
228 | popup_form_ = new QFormLayout(popup_); | |
229 | popup_->setLayout(popup_form_); | |
230 | populate_popup_form(popup_, popup_form_); | |
231 | } | |
232 | ||
233 | void Trace::populate_popup_form(QWidget *parent, QFormLayout *form) | |
234 | { | |
235 | QLineEdit *const name_edit = new QLineEdit(parent); | |
236 | name_edit->setText(name_); | |
237 | connect(name_edit, SIGNAL(textChanged(const QString&)), | |
238 | this, SLOT(on_text_changed(const QString&))); | |
239 | form->addRow(tr("Name"), name_edit); | |
240 | ||
241 | add_colour_option(parent, form); | |
242 | } | |
243 | ||
244 | void Trace::on_popup_closed() | |
245 | { | |
246 | popup_ = nullptr; | |
247 | popup_form_ = nullptr; | |
248 | } | |
249 | ||
250 | void Trace::on_text_changed(const QString &text) | |
251 | { | |
252 | set_name(text); | |
253 | ||
254 | if (owner_) | |
255 | owner_->extents_changed(true, false); | |
256 | } | |
257 | ||
258 | void Trace::on_colour_changed(const QColor &colour) | |
259 | { | |
260 | set_colour(colour); | |
261 | ||
262 | if (owner_) | |
263 | owner_->row_item_appearance_changed(true, true); | |
264 | } | |
265 | ||
266 | } // namespace view | |
267 | } // namespace pv |