Move trace view files

[pulseview.git] / pv / views / trace / viewport.hpp

diff --git a/pv/views/trace/viewport.hpp b/pv/views/trace/viewport.hpp
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+++ b/pv/views/trace/viewport.hpp
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+/*
+ * This file is part of the PulseView project.
+ *
+ * Copyright (C) 2012 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/>.
+ */
+
+#ifndef PULSEVIEW_PV_VIEWS_TRACEVIEW_VIEWPORT_HPP
+#define PULSEVIEW_PV_VIEWS_TRACEVIEW_VIEWPORT_HPP
+
+#include <boost/optional.hpp>
+
+#include <QTimer>
+#include <QTouchEvent>
+
+#include "pv/util.hpp"
+#include "viewwidget.hpp"
+
+using std::shared_ptr;
+using std::vector;
+
+class QPainter;
+class QPaintEvent;
+class Session;
+
+namespace pv {
+namespace views {
+namespace trace {
+
+class View;
+
+class Viewport : public ViewWidget
+{
+       Q_OBJECT
+
+public:
+       explicit Viewport(View &parent);
+
+private:
+       /**
+        * Indicates when a view item is being hovered over.
+        * @param item The item that is being hovered over, or @c nullptr
+        * if no view item is being hovered over.
+        */
+       void item_hover(const shared_ptr<ViewItem> &item);
+
+       /**
+        * Gets the first view item which has a hit-box that contains @c pt .
+        * @param pt the point to search with.
+        * @return the view item that has been found, or and empty
+        *   @c shared_ptr if no item was found.
+        */
+       shared_ptr<ViewItem> get_mouse_over_item(const QPoint &pt);
+
+       /**
+        * Sets this item into the dragged state.
+        */
+       void drag();
+
+       /**
+        * Drag the background by the delta offset.
+        * @param delta the drag offset in pixels.
+        */
+       void drag_by(const QPoint &delta);
+
+       /**
+        * Sets this item into the un-dragged state.
+        */
+       void drag_release();
+
+       /**
+        * Gets the items in the view widget.
+        */
+       vector< shared_ptr<ViewItem> > items();
+
+       /**
+        * Handles touch begin update and end events.
+        * @param e the event that triggered this handler.
+        */
+       bool touch_event(QTouchEvent *event);
+
+private:
+       void paintEvent(QPaintEvent *event);
+
+       void mouseDoubleClickEvent(QMouseEvent *event);
+       void wheelEvent(QWheelEvent *event);
+
+private:
+       boost::optional<pv::util::Timestamp> drag_offset_;
+       int drag_v_offset_;
+
+       double pinch_offset0_;
+       double pinch_offset1_;
+       bool pinch_zoom_active_;
+};
+
+} // namespace trace
+} // namespace views
+} // namespace pv
+
+#endif // PULSEVIEW_PV_VIEWS_TRACEVIEW_VIEWPORT_HPP