--- /dev/null
+/*
+ * This file is part of the PulseView project.
+ *
+ * Copyright (C) 2013 Joel Holdsworth <joel@airwebreathe.org.uk>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include <extdef.h>
+
+#include <cassert>
+#include <cmath>
+
+#include <QApplication>
+#include <QFormLayout>
+#include <QKeyEvent>
+#include <QLineEdit>
+
+#include "trace.hpp"
+#include "tracepalette.hpp"
+#include "view.hpp"
+
+#include "pv/globalsettings.hpp"
+#include "pv/widgets/colourbutton.hpp"
+#include "pv/widgets/popup.hpp"
+
+using std::pair;
+using std::shared_ptr;
+
+namespace pv {
+namespace views {
+namespace trace {
+
+const QPen Trace::AxisPen(QColor(0, 0, 0, 30 * 256 / 100));
+const int Trace::LabelHitPadding = 2;
+
+const QColor Trace::BrightGrayBGColour = QColor(0, 0, 0, 10 * 255 / 100);
+const QColor Trace::DarkGrayBGColour = QColor(0, 0, 0, 15 * 255 / 100);
+
+Trace::Trace(shared_ptr<data::SignalBase> channel) :
+ base_(channel),
+ popup_(nullptr),
+ popup_form_(nullptr)
+{
+ connect(channel.get(), SIGNAL(name_changed(const QString&)),
+ this, SLOT(on_name_changed(const QString&)));
+ connect(channel.get(), SIGNAL(colour_changed(const QColor&)),
+ this, SLOT(on_colour_changed(const QColor&)));
+}
+
+shared_ptr<data::SignalBase> Trace::base() const
+{
+ return base_;
+}
+
+void Trace::paint_label(QPainter &p, const QRect &rect, bool hover)
+{
+ const int y = get_visual_y();
+
+ p.setBrush(base_->colour());
+
+ if (!enabled())
+ return;
+
+ const QRectF r = label_rect(rect);
+
+ // When selected, move the arrow to the left so that the border can show
+ const QPointF offs = (selected()) ? QPointF(-2, 0) : QPointF(0, 0);
+
+ // Paint the label
+ const float label_arrow_length = r.height() / 2;
+ QPointF points[] = {
+ offs + r.topLeft(),
+ offs + QPointF(r.right() - label_arrow_length, r.top()),
+ offs + QPointF(r.right(), y),
+ offs + QPointF(r.right() - label_arrow_length, r.bottom()),
+ offs + r.bottomLeft()
+ };
+ QPointF highlight_points[] = {
+ offs + QPointF(r.left() + 1, r.top() + 1),
+ offs + QPointF(r.right() - label_arrow_length, r.top() + 1),
+ offs + QPointF(r.right() - 1, y),
+ offs + QPointF(r.right() - label_arrow_length, r.bottom() - 1),
+ offs + QPointF(r.left() + 1, r.bottom() - 1)
+ };
+
+ if (selected()) {
+ p.setPen(highlight_pen());
+ p.setBrush(Qt::transparent);
+ p.drawPolygon(points, countof(points));
+ }
+
+ p.setPen(Qt::transparent);
+ p.setBrush(hover ? base_->colour().lighter() : base_->colour());
+ p.drawPolygon(points, countof(points));
+
+ p.setPen(base_->colour().lighter());
+ p.setBrush(Qt::transparent);
+ p.drawPolygon(highlight_points, countof(highlight_points));
+
+ p.setPen(base_->colour().darker());
+ p.setBrush(Qt::transparent);
+ p.drawPolygon(points, countof(points));
+
+ // Paint the text
+ p.setPen(select_text_colour(base_->colour()));
+ p.setFont(QApplication::font());
+ p.drawText(QRectF(r.x(), r.y(),
+ r.width() - label_arrow_length, r.height()),
+ Qt::AlignCenter | Qt::AlignVCenter, base_->name());
+}
+
+QMenu* Trace::create_context_menu(QWidget *parent)
+{
+ QMenu *const menu = ViewItem::create_context_menu(parent);
+
+ return menu;
+}
+
+pv::widgets::Popup* Trace::create_popup(QWidget *parent)
+{
+ using pv::widgets::Popup;
+
+ popup_ = new Popup(parent);
+ popup_->set_position(parent->mapToGlobal(
+ point(parent->rect())), Popup::Right);
+
+ create_popup_form();
+
+ connect(popup_, SIGNAL(closed()), this, SLOT(on_popup_closed()));
+
+ return popup_;
+}
+
+QRectF Trace::label_rect(const QRectF &rect) const
+{
+ QFontMetrics m(QApplication::font());
+ const QSize text_size(
+ m.boundingRect(QRect(), 0, base_->name()).width(), m.height());
+ const QSizeF label_size(
+ text_size.width() + LabelPadding.width() * 2,
+ ceilf((text_size.height() + LabelPadding.height() * 2) / 2) * 2);
+ const float half_height = label_size.height() / 2;
+ return QRectF(
+ rect.right() - half_height - label_size.width() - 0.5,
+ get_visual_y() + 0.5f - half_height,
+ label_size.width() + half_height,
+ label_size.height());
+}
+
+void Trace::paint_back(QPainter &p, ViewItemPaintParams &pp)
+{
+ const View *view = owner_->view();
+ assert(view);
+
+ if (view->coloured_bg())
+ p.setBrush(base_->bgcolour());
+ else
+ p.setBrush(pp.next_bg_colour_state() ? BrightGrayBGColour : DarkGrayBGColour);
+
+ p.setPen(QPen(Qt::NoPen));
+
+ const pair<int, int> extents = v_extents();
+ p.drawRect(pp.left(), get_visual_y() + extents.first,
+ pp.width(), extents.second - extents.first);
+}
+
+void Trace::paint_axis(QPainter &p, ViewItemPaintParams &pp, int y)
+{
+ p.setRenderHint(QPainter::Antialiasing, false);
+
+ p.setPen(AxisPen);
+ p.drawLine(QPointF(pp.left(), y), QPointF(pp.right(), y));
+
+ p.setRenderHint(QPainter::Antialiasing, true);
+}
+
+void Trace::add_colour_option(QWidget *parent, QFormLayout *form)
+{
+ using pv::widgets::ColourButton;
+
+ ColourButton *const colour_button = new ColourButton(
+ TracePalette::Rows, TracePalette::Cols, parent);
+ colour_button->set_palette(TracePalette::Colours);
+ colour_button->set_colour(base_->colour());
+ connect(colour_button, SIGNAL(selected(const QColor&)),
+ this, SLOT(on_colouredit_changed(const QColor&)));
+
+ form->addRow(tr("Colour"), colour_button);
+}
+
+void Trace::create_popup_form()
+{
+ // Clear the layout
+
+ // Transfer the layout and the child widgets to a temporary widget
+ // which we delete after the event was handled. This way, the layout
+ // and all widgets contained therein are deleted after the event was
+ // handled, leaving the parent popup_ time to handle the change.
+ if (popup_form_) {
+ QWidget *suicidal = new QWidget();
+ suicidal->setLayout(popup_form_);
+ suicidal->deleteLater();
+ }
+
+ // Repopulate the popup
+ popup_form_ = new QFormLayout(popup_);
+ popup_->setLayout(popup_form_);
+ populate_popup_form(popup_, popup_form_);
+}
+
+void Trace::populate_popup_form(QWidget *parent, QFormLayout *form)
+{
+ QLineEdit *const name_edit = new QLineEdit(parent);
+ name_edit->setText(base_->name());
+ connect(name_edit, SIGNAL(textChanged(const QString&)),
+ this, SLOT(on_nameedit_changed(const QString&)));
+ form->addRow(tr("Name"), name_edit);
+
+ add_colour_option(parent, form);
+}
+
+void Trace::set_name(QString name)
+{
+ base_->set_name(name);
+}
+
+void Trace::set_colour(QColor colour)
+{
+ base_->set_colour(colour);
+}
+
+void Trace::on_name_changed(const QString &text)
+{
+ /* This event handler is called by SignalBase when the name was changed there */
+ (void)text;
+
+ if (owner_) {
+ owner_->extents_changed(true, false);
+ owner_->row_item_appearance_changed(true, false);
+ }
+}
+
+void Trace::on_colour_changed(const QColor &colour)
+{
+ /* This event handler is called by SignalBase when the colour was changed there */
+ (void)colour;
+
+ if (owner_)
+ owner_->row_item_appearance_changed(true, true);
+}
+
+void Trace::on_popup_closed()
+{
+ popup_ = nullptr;
+ popup_form_ = nullptr;
+}
+
+void Trace::on_nameedit_changed(const QString &name)
+{
+ /* This event handler notifies SignalBase that the name changed */
+ set_name(name);
+}
+
+void Trace::on_colouredit_changed(const QColor &colour)
+{
+ /* This event handler notifies SignalBase that the colour changed */
+ set_colour(colour);
+}
+
+} // namespace trace
+} // namespace views
+} // namespace pv
projects / pulseview.git / blobdiff