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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 | bool Trace::is_draggable() const | |
84 | { | |
85 | const View *const view = owner_->view(); | |
86 | assert(view); | |
87 | ||
88 | QPoint cursor_pos = view->mapFromGlobal(QCursor::pos()); | |
89 | ||
90 | // The signal is draggable only in the header area | |
91 | return (cursor_pos.x() <= view->header_size().width()); | |
92 | } | |
93 | ||
94 | void Trace::paint_label(QPainter &p, const QRect &rect, bool hover) | |
95 | { | |
96 | const int y = get_visual_y(); | |
97 | ||
98 | p.setBrush(colour_); | |
99 | ||
100 | if (!enabled()) | |
101 | return; | |
102 | ||
103 | const QRectF r = label_rect(rect); | |
104 | ||
105 | // Paint the label | |
106 | const float label_arrow_length = r.height() / 2; | |
107 | const QPointF points[] = { | |
108 | r.topLeft(), | |
109 | QPointF(r.right() - label_arrow_length, r.top()), | |
110 | QPointF(r.right(), y), | |
111 | QPointF(r.right() - label_arrow_length, r.bottom()), | |
112 | r.bottomLeft() | |
113 | }; | |
114 | const QPointF highlight_points[] = { | |
115 | QPointF(r.left() + 1, r.top() + 1), | |
116 | QPointF(r.right() - label_arrow_length, r.top() + 1), | |
117 | QPointF(r.right() - 1, y), | |
118 | QPointF(r.right() - label_arrow_length, r.bottom() - 1), | |
119 | QPointF(r.left() + 1, r.bottom() - 1) | |
120 | }; | |
121 | ||
122 | if (selected()) { | |
123 | p.setPen(highlight_pen()); | |
124 | p.setBrush(Qt::transparent); | |
125 | p.drawPolygon(points, countof(points)); | |
126 | } | |
127 | ||
128 | p.setPen(Qt::transparent); | |
129 | p.setBrush(hover ? colour_.lighter() : colour_); | |
130 | p.drawPolygon(points, countof(points)); | |
131 | ||
132 | p.setPen(colour_.lighter()); | |
133 | p.setBrush(Qt::transparent); | |
134 | p.drawPolygon(highlight_points, countof(highlight_points)); | |
135 | ||
136 | p.setPen(colour_.darker()); | |
137 | p.setBrush(Qt::transparent); | |
138 | p.drawPolygon(points, countof(points)); | |
139 | ||
140 | // Paint the text | |
141 | p.setPen(select_text_colour(colour_)); | |
142 | p.setFont(QApplication::font()); | |
143 | p.drawText(QRectF(r.x(), r.y(), | |
144 | r.width() - label_arrow_length, r.height()), | |
145 | Qt::AlignCenter | Qt::AlignVCenter, name_); | |
146 | } | |
147 | ||
148 | QMenu* Trace::create_context_menu(QWidget *parent) | |
149 | { | |
150 | QMenu *const menu = ViewItem::create_context_menu(parent); | |
151 | ||
152 | return menu; | |
153 | } | |
154 | ||
155 | pv::widgets::Popup* Trace::create_popup(QWidget *parent) | |
156 | { | |
157 | using pv::widgets::Popup; | |
158 | ||
159 | popup_ = new Popup(parent); | |
160 | popup_->set_position(parent->mapToGlobal( | |
161 | point(parent->rect())), Popup::Right); | |
162 | ||
163 | create_popup_form(); | |
164 | ||
165 | connect(popup_, SIGNAL(closed()), | |
166 | this, SLOT(on_popup_closed())); | |
167 | ||
168 | return popup_; | |
169 | } | |
170 | ||
171 | QRectF Trace::label_rect(const QRectF &rect) const | |
172 | { | |
173 | using pv::view::View; | |
174 | ||
175 | QFontMetrics m(QApplication::font()); | |
176 | const QSize text_size( | |
177 | m.boundingRect(QRect(), 0, name_).width(), m.height()); | |
178 | const QSizeF label_size( | |
179 | text_size.width() + LabelPadding.width() * 2, | |
180 | ceilf((text_size.height() + LabelPadding.height() * 2) / 2) * 2); | |
181 | const float half_height = label_size.height() / 2; | |
182 | return QRectF( | |
183 | rect.right() - half_height - label_size.width() - 0.5, | |
184 | get_visual_y() + 0.5f - half_height, | |
185 | label_size.width() + half_height, | |
186 | label_size.height()); | |
187 | } | |
188 | ||
189 | QRectF Trace::hit_box_rect(const ViewItemPaintParams &pp) const | |
190 | { | |
191 | const float h = QFontMetrics(QApplication::font()).height(); | |
192 | return QRectF(pp.left(), get_visual_y() - h / 2.0f, | |
193 | pp.width(), h); | |
194 | } | |
195 | ||
196 | void Trace::paint_back(QPainter &p, const ViewItemPaintParams &pp) | |
197 | { | |
198 | if (coloured_bg_) | |
199 | p.setBrush(bgcolour_); | |
200 | else | |
201 | p.setBrush(bgcolour_state_ ? BrightBGColour : DarkBGColour); | |
202 | ||
203 | p.setPen(QPen(Qt::NoPen)); | |
204 | ||
205 | const std::pair<int, int> extents = v_extents(); | |
206 | ||
207 | const int x = 0; | |
208 | const int y = get_visual_y() + extents.first; | |
209 | const int w = pp.right() - pp.left(); | |
210 | const int h = extents.second - extents.first; | |
211 | ||
212 | p.drawRect(x, y, w, h); | |
213 | } | |
214 | ||
215 | void Trace::paint_axis(QPainter &p, const ViewItemPaintParams &pp, int y) | |
216 | { | |
217 | p.setPen(AxisPen); | |
218 | p.drawLine(QPointF(pp.left(), y + 0.5f), QPointF(pp.right(), y + 0.5f)); | |
219 | } | |
220 | ||
221 | void Trace::add_colour_option(QWidget *parent, QFormLayout *form) | |
222 | { | |
223 | using pv::widgets::ColourButton; | |
224 | ||
225 | ColourButton *const colour_button = new ColourButton( | |
226 | TracePalette::Rows, TracePalette::Cols, parent); | |
227 | colour_button->set_palette(TracePalette::Colours); | |
228 | colour_button->set_colour(colour_); | |
229 | connect(colour_button, SIGNAL(selected(const QColor&)), | |
230 | this, SLOT(on_colour_changed(const QColor&))); | |
231 | ||
232 | form->addRow(tr("Colour"), colour_button); | |
233 | } | |
234 | ||
235 | void Trace::create_popup_form() | |
236 | { | |
237 | // Clear the layout | |
238 | ||
239 | // Transfer the layout and the child widgets to a temporary widget | |
240 | // which then goes out of scope destroying the layout and all the child | |
241 | // widgets. | |
242 | if (popup_form_) | |
243 | QWidget().setLayout(popup_form_); | |
244 | ||
245 | // Repopulate the popup | |
246 | popup_form_ = new QFormLayout(popup_); | |
247 | popup_->setLayout(popup_form_); | |
248 | populate_popup_form(popup_, popup_form_); | |
249 | } | |
250 | ||
251 | void Trace::populate_popup_form(QWidget *parent, QFormLayout *form) | |
252 | { | |
253 | QLineEdit *const name_edit = new QLineEdit(parent); | |
254 | name_edit->setText(name_); | |
255 | connect(name_edit, SIGNAL(textChanged(const QString&)), | |
256 | this, SLOT(on_text_changed(const QString&))); | |
257 | form->addRow(tr("Name"), name_edit); | |
258 | ||
259 | add_colour_option(parent, form); | |
260 | } | |
261 | ||
262 | void Trace::on_popup_closed() | |
263 | { | |
264 | popup_ = nullptr; | |
265 | popup_form_ = nullptr; | |
266 | } | |
267 | ||
268 | void Trace::on_text_changed(const QString &text) | |
269 | { | |
270 | set_name(text); | |
271 | ||
272 | if (owner_) | |
273 | owner_->extents_changed(true, false); | |
274 | } | |
275 | ||
276 | void Trace::on_colour_changed(const QColor &colour) | |
277 | { | |
278 | set_colour(colour); | |
279 | ||
280 | if (owner_) | |
281 | owner_->row_item_appearance_changed(true, true); | |
282 | } | |
283 | ||
284 | } // namespace view | |
285 | } // namespace pv |