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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 | Trace::Trace(QString name) : | |
45 | name_(name), | |
46 | coloured_bg_(true), // Default setting is set in MainWindow::setup_ui() | |
47 | popup_(nullptr), | |
48 | popup_form_(nullptr) | |
49 | { | |
50 | } | |
51 | ||
52 | QString Trace::name() const | |
53 | { | |
54 | return name_; | |
55 | } | |
56 | ||
57 | void Trace::set_name(QString name) | |
58 | { | |
59 | name_ = name; | |
60 | } | |
61 | ||
62 | QColor Trace::colour() const | |
63 | { | |
64 | return colour_; | |
65 | } | |
66 | ||
67 | void Trace::set_colour(QColor colour) | |
68 | { | |
69 | colour_ = colour; | |
70 | ||
71 | bgcolour_ = colour; | |
72 | bgcolour_.setAlpha(20); | |
73 | } | |
74 | ||
75 | void Trace::set_coloured_bg(bool state) | |
76 | { | |
77 | coloured_bg_ = state; | |
78 | } | |
79 | ||
80 | void Trace::paint_label(QPainter &p, const QRect &rect, bool hover) | |
81 | { | |
82 | const int y = get_visual_y(); | |
83 | ||
84 | p.setBrush(colour_); | |
85 | ||
86 | if (!enabled()) | |
87 | return; | |
88 | ||
89 | const QRectF r = label_rect(rect); | |
90 | ||
91 | // Paint the label | |
92 | const float label_arrow_length = r.height() / 2; | |
93 | const QPointF points[] = { | |
94 | r.topLeft(), | |
95 | QPointF(r.right() - label_arrow_length, r.top()), | |
96 | QPointF(r.right(), y), | |
97 | QPointF(r.right() - label_arrow_length, r.bottom()), | |
98 | r.bottomLeft() | |
99 | }; | |
100 | const QPointF highlight_points[] = { | |
101 | QPointF(r.left() + 1, r.top() + 1), | |
102 | QPointF(r.right() - label_arrow_length, r.top() + 1), | |
103 | QPointF(r.right() - 1, y), | |
104 | QPointF(r.right() - label_arrow_length, r.bottom() - 1), | |
105 | QPointF(r.left() + 1, r.bottom() - 1) | |
106 | }; | |
107 | ||
108 | if (selected()) { | |
109 | p.setPen(highlight_pen()); | |
110 | p.setBrush(Qt::transparent); | |
111 | p.drawPolygon(points, countof(points)); | |
112 | } | |
113 | ||
114 | p.setPen(Qt::transparent); | |
115 | p.setBrush(hover ? colour_.lighter() : colour_); | |
116 | p.drawPolygon(points, countof(points)); | |
117 | ||
118 | p.setPen(colour_.lighter()); | |
119 | p.setBrush(Qt::transparent); | |
120 | p.drawPolygon(highlight_points, countof(highlight_points)); | |
121 | ||
122 | p.setPen(colour_.darker()); | |
123 | p.setBrush(Qt::transparent); | |
124 | p.drawPolygon(points, countof(points)); | |
125 | ||
126 | // Paint the text | |
127 | p.setPen(select_text_colour(colour_)); | |
128 | p.setFont(QApplication::font()); | |
129 | p.drawText(QRectF(r.x(), r.y(), | |
130 | r.width() - label_arrow_length, r.height()), | |
131 | Qt::AlignCenter | Qt::AlignVCenter, name_); | |
132 | } | |
133 | ||
134 | QMenu* Trace::create_context_menu(QWidget *parent) | |
135 | { | |
136 | QMenu *const menu = ViewItem::create_context_menu(parent); | |
137 | ||
138 | return menu; | |
139 | } | |
140 | ||
141 | pv::widgets::Popup* Trace::create_popup(QWidget *parent) | |
142 | { | |
143 | using pv::widgets::Popup; | |
144 | ||
145 | popup_ = new Popup(parent); | |
146 | popup_->set_position(parent->mapToGlobal( | |
147 | point(parent->rect())), Popup::Right); | |
148 | ||
149 | create_popup_form(); | |
150 | ||
151 | connect(popup_, SIGNAL(closed()), | |
152 | this, SLOT(on_popup_closed())); | |
153 | ||
154 | return popup_; | |
155 | } | |
156 | ||
157 | QRectF Trace::label_rect(const QRectF &rect) const | |
158 | { | |
159 | using pv::view::View; | |
160 | ||
161 | QFontMetrics m(QApplication::font()); | |
162 | const QSize text_size( | |
163 | m.boundingRect(QRect(), 0, name_).width(), m.height()); | |
164 | const QSizeF label_size( | |
165 | text_size.width() + LabelPadding.width() * 2, | |
166 | ceilf((text_size.height() + LabelPadding.height() * 2) / 2) * 2); | |
167 | const float half_height = label_size.height() / 2; | |
168 | return QRectF( | |
169 | rect.right() - half_height - label_size.width() - 0.5, | |
170 | get_visual_y() + 0.5f - half_height, | |
171 | label_size.width() + half_height, | |
172 | label_size.height()); | |
173 | } | |
174 | ||
175 | QRectF Trace::hit_box_rect(const ViewItemPaintParams &pp) const | |
176 | { | |
177 | const float h = QFontMetrics(QApplication::font()).height(); | |
178 | return QRectF(pp.left(), get_visual_y() - h / 2.0f, | |
179 | pp.width(), h); | |
180 | } | |
181 | ||
182 | void Trace::paint_back(QPainter &p, const ViewItemPaintParams &pp) | |
183 | { | |
184 | if (coloured_bg_) { | |
185 | p.setPen(QPen(Qt::NoPen)); | |
186 | p.setBrush(bgcolour_); | |
187 | ||
188 | const std::pair<int, int> extents = v_extents(); | |
189 | ||
190 | const int x = 0; | |
191 | const int y = get_visual_y() + extents.first; | |
192 | const int w = pp.right() - pp.left(); | |
193 | const int h = extents.second - extents.first; | |
194 | ||
195 | p.drawRect(x, y, w, h); | |
196 | } | |
197 | } | |
198 | ||
199 | void Trace::paint_axis(QPainter &p, const ViewItemPaintParams &pp, int y) | |
200 | { | |
201 | p.setPen(AxisPen); | |
202 | p.drawLine(QPointF(pp.left(), y + 0.5f), QPointF(pp.right(), y + 0.5f)); | |
203 | } | |
204 | ||
205 | void Trace::add_colour_option(QWidget *parent, QFormLayout *form) | |
206 | { | |
207 | using pv::widgets::ColourButton; | |
208 | ||
209 | ColourButton *const colour_button = new ColourButton( | |
210 | TracePalette::Rows, TracePalette::Cols, parent); | |
211 | colour_button->set_palette(TracePalette::Colours); | |
212 | colour_button->set_colour(colour_); | |
213 | connect(colour_button, SIGNAL(selected(const QColor&)), | |
214 | this, SLOT(on_colour_changed(const QColor&))); | |
215 | ||
216 | form->addRow(tr("Colour"), colour_button); | |
217 | } | |
218 | ||
219 | void Trace::create_popup_form() | |
220 | { | |
221 | // Clear the layout | |
222 | ||
223 | // Transfer the layout and the child widgets to a temporary widget | |
224 | // which then goes out of scope destroying the layout and all the child | |
225 | // widgets. | |
226 | if (popup_form_) | |
227 | QWidget().setLayout(popup_form_); | |
228 | ||
229 | // Repopulate the popup | |
230 | popup_form_ = new QFormLayout(popup_); | |
231 | popup_->setLayout(popup_form_); | |
232 | populate_popup_form(popup_, popup_form_); | |
233 | } | |
234 | ||
235 | void Trace::populate_popup_form(QWidget *parent, QFormLayout *form) | |
236 | { | |
237 | QLineEdit *const name_edit = new QLineEdit(parent); | |
238 | name_edit->setText(name_); | |
239 | connect(name_edit, SIGNAL(textChanged(const QString&)), | |
240 | this, SLOT(on_text_changed(const QString&))); | |
241 | form->addRow(tr("Name"), name_edit); | |
242 | ||
243 | add_colour_option(parent, form); | |
244 | } | |
245 | ||
246 | void Trace::on_popup_closed() | |
247 | { | |
248 | popup_ = nullptr; | |
249 | popup_form_ = nullptr; | |
250 | } | |
251 | ||
252 | void Trace::on_text_changed(const QString &text) | |
253 | { | |
254 | set_name(text); | |
255 | ||
256 | if (owner_) | |
257 | owner_->extents_changed(true, false); | |
258 | } | |
259 | ||
260 | void Trace::on_colour_changed(const QColor &colour) | |
261 | { | |
262 | set_colour(colour); | |
263 | ||
264 | if (owner_) | |
265 | owner_->row_item_appearance_changed(true, true); | |
266 | } | |
267 | ||
268 | } // namespace view | |
269 | } // namespace pv |