2 * This file is part of the PulseView project.
4 * Copyright (C) 2013 Joel Holdsworth <joel@airwebreathe.org.uk>
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.
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.
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/>.
25 #include <QApplication>
26 #include <QFormLayout>
31 #include "tracepalette.hpp"
34 #include "pv/globalsettings.hpp"
35 #include "pv/widgets/colorbutton.hpp"
36 #include "pv/widgets/popup.hpp"
39 using std::shared_ptr;
45 const QPen Trace::AxisPen(QColor(0, 0, 0, 30 * 256 / 100));
46 const int Trace::LabelHitPadding = 2;
48 const QColor Trace::BrightGrayBGColor = QColor(0, 0, 0, 10 * 255 / 100);
49 const QColor Trace::DarkGrayBGColor = QColor(0, 0, 0, 15 * 255 / 100);
51 Trace::Trace(shared_ptr<data::SignalBase> channel) :
54 segment_display_mode_(ShowLastSegmentOnly), // Will be overwritten by View
59 connect(channel.get(), SIGNAL(name_changed(const QString&)),
60 this, SLOT(on_name_changed(const QString&)));
61 connect(channel.get(), SIGNAL(color_changed(const QColor&)),
62 this, SLOT(on_color_changed(const QColor&)));
64 GlobalSettings::add_change_handler(this);
66 GlobalSettings settings;
68 settings.value(GlobalSettings::Key_View_ShowHoverMarker).toBool();
73 GlobalSettings::remove_change_handler(this);
76 shared_ptr<data::SignalBase> Trace::base() const
81 bool Trace::is_selectable(QPoint pos) const
83 // True if the header was clicked, false if the trace area was clicked
84 const View *view = owner_->view();
87 return (pos.x() <= view->header_width());
90 bool Trace::is_draggable(QPoint pos) const
92 // While the header label that belongs to this trace is draggable,
93 // the trace itself shall not be. Hence we return true if the header
94 // was clicked and false if the trace area was clicked
95 const View *view = owner_->view();
98 return (pos.x() <= view->header_width());
101 void Trace::set_segment_display_mode(SegmentDisplayMode mode)
103 segment_display_mode_ = mode;
106 owner_->row_item_appearance_changed(true, true);
109 void Trace::on_setting_changed(const QString &key, const QVariant &value)
111 if (key == GlobalSettings::Key_View_ShowHoverMarker)
112 show_hover_marker_ = value.toBool();
114 // Force a repaint since many options alter the way traces look
116 owner_->row_item_appearance_changed(false, true);
119 void Trace::paint_label(QPainter &p, const QRect &rect, bool hover)
121 const int y = get_visual_y();
123 p.setBrush(base_->color());
128 const QRectF r = label_rect(rect);
130 // When selected, move the arrow to the left so that the border can show
131 const QPointF offs = (selected()) ? QPointF(-2, 0) : QPointF(0, 0);
134 const float label_arrow_length = r.height() / 2;
137 offs + QPointF(r.right() - label_arrow_length, r.top()),
138 offs + QPointF(r.right(), y),
139 offs + QPointF(r.right() - label_arrow_length, r.bottom()),
140 offs + r.bottomLeft()
142 QPointF highlight_points[] = {
143 offs + QPointF(r.left() + 1, r.top() + 1),
144 offs + QPointF(r.right() - label_arrow_length, r.top() + 1),
145 offs + QPointF(r.right() - 1, y),
146 offs + QPointF(r.right() - label_arrow_length, r.bottom() - 1),
147 offs + QPointF(r.left() + 1, r.bottom() - 1)
151 p.setPen(highlight_pen());
152 p.setBrush(Qt::transparent);
153 p.drawPolygon(points, countof(points));
156 p.setPen(Qt::transparent);
157 p.setBrush(hover ? base_->color().lighter() : base_->color());
158 p.drawPolygon(points, countof(points));
160 p.setPen(base_->color().lighter());
161 p.setBrush(Qt::transparent);
162 p.drawPolygon(highlight_points, countof(highlight_points));
164 p.setPen(base_->color().darker());
165 p.setBrush(Qt::transparent);
166 p.drawPolygon(points, countof(points));
169 p.setPen(select_text_color(base_->color()));
170 p.setFont(QApplication::font());
171 p.drawText(QRectF(r.x(), r.y(),
172 r.width() - label_arrow_length, r.height()),
173 Qt::AlignCenter | Qt::AlignVCenter, base_->name());
176 QMenu* Trace::create_header_context_menu(QWidget *parent)
178 QMenu *const menu = ViewItem::create_header_context_menu(parent);
183 pv::widgets::Popup* Trace::create_popup(QWidget *parent)
185 using pv::widgets::Popup;
187 popup_ = new Popup(parent);
188 popup_->set_position(parent->mapToGlobal(
189 drag_point(parent->rect())), Popup::Right);
193 connect(popup_, SIGNAL(closed()), this, SLOT(on_popup_closed()));
198 QRectF Trace::label_rect(const QRectF &rect) const
200 QFontMetrics m(QApplication::font());
201 const QSize text_size(
202 m.boundingRect(QRect(), 0, base_->name()).width(), m.height());
203 const QSizeF label_size(
204 text_size.width() + LabelPadding.width() * 2,
205 ceilf((text_size.height() + LabelPadding.height() * 2) / 2) * 2);
206 const float half_height = label_size.height() / 2;
208 rect.right() - half_height - label_size.width() - 0.5,
209 get_visual_y() + 0.5f - half_height,
210 label_size.width() + half_height,
211 label_size.height());
214 QRectF Trace::hit_box_rect(const ViewItemPaintParams &pp) const
216 // This one is only for the trace itself, excluding the header area
217 const View *view = owner_->view();
220 pair<int, int> extents = v_extents();
221 const int top = pp.top() + get_visual_y() + extents.first;
222 const int height = extents.second - extents.first;
224 return QRectF(pp.left() + view->header_width(), top,
225 pp.width() - view->header_width(), height);
228 void Trace::set_current_segment(const int segment)
230 current_segment_ = segment;
233 int Trace::get_current_segment() const
235 return current_segment_;
238 void Trace::hover_point_changed(const QPoint &hp)
243 owner_->row_item_appearance_changed(false, true);
246 void Trace::paint_back(QPainter &p, ViewItemPaintParams &pp)
248 const View *view = owner_->view();
251 if (view->colored_bg())
252 p.setBrush(base_->bgcolor());
254 p.setBrush(pp.next_bg_color_state() ? BrightGrayBGColor : DarkGrayBGColor);
256 p.setPen(QPen(Qt::NoPen));
258 const pair<int, int> extents = v_extents();
259 p.drawRect(pp.left(), get_visual_y() + extents.first,
260 pp.width(), extents.second - extents.first);
263 void Trace::paint_axis(QPainter &p, ViewItemPaintParams &pp, int y)
265 p.setRenderHint(QPainter::Antialiasing, false);
268 p.drawLine(QPointF(pp.left(), y), QPointF(pp.right(), y));
270 p.setRenderHint(QPainter::Antialiasing, true);
273 void Trace::add_color_option(QWidget *parent, QFormLayout *form)
275 using pv::widgets::ColorButton;
277 ColorButton *const color_button = new ColorButton(
278 TracePalette::Rows, TracePalette::Cols, parent);
279 color_button->set_palette(TracePalette::Colors);
280 color_button->set_color(base_->color());
281 connect(color_button, SIGNAL(selected(const QColor&)),
282 this, SLOT(on_coloredit_changed(const QColor&)));
284 form->addRow(tr("Color"), color_button);
287 void Trace::paint_hover_marker(QPainter &p)
289 const View *view = owner_->view();
292 const int x = view->hover_point().x();
297 p.setPen(QPen(QColor(Qt::lightGray)));
299 const pair<int, int> extents = v_extents();
301 p.setRenderHint(QPainter::Antialiasing, false);
302 p.drawLine(x, get_visual_y() + extents.first,
303 x, get_visual_y() + extents.second);
304 p.setRenderHint(QPainter::Antialiasing, true);
307 void Trace::create_popup_form()
311 // Transfer the layout and the child widgets to a temporary widget
312 // which we delete after the event was handled. This way, the layout
313 // and all widgets contained therein are deleted after the event was
314 // handled, leaving the parent popup_ time to handle the change.
316 QWidget *suicidal = new QWidget();
317 suicidal->setLayout(popup_form_);
318 suicidal->deleteLater();
321 // Repopulate the popup
322 popup_form_ = new QFormLayout(popup_);
323 popup_->setLayout(popup_form_);
324 populate_popup_form(popup_, popup_form_);
327 void Trace::populate_popup_form(QWidget *parent, QFormLayout *form)
329 QLineEdit *const name_edit = new QLineEdit(parent);
330 name_edit->setText(base_->name());
331 connect(name_edit, SIGNAL(textChanged(const QString&)),
332 this, SLOT(on_nameedit_changed(const QString&)));
333 form->addRow(tr("Name"), name_edit);
335 add_color_option(parent, form);
338 void Trace::on_name_changed(const QString &text)
340 /* This event handler is called by SignalBase when the name was changed there */
344 owner_->extents_changed(true, false);
345 owner_->row_item_appearance_changed(true, false);
349 void Trace::on_color_changed(const QColor &color)
351 /* This event handler is called by SignalBase when the color was changed there */
355 owner_->row_item_appearance_changed(true, true);
358 void Trace::on_popup_closed()
361 popup_form_ = nullptr;
364 void Trace::on_nameedit_changed(const QString &name)
366 /* This event handler notifies SignalBase that the name changed */
367 base_->set_name(name);
370 void Trace::on_coloredit_changed(const QColor &color)
372 /* This event handler notifies SignalBase that the color changed */
373 base_->set_color(color);