TraceTreeItem: Separated from RowItem

[pulseview.git] / pv / view / tracetreeitem.cpp

diff --git a/pv/view/tracetreeitem.cpp b/pv/view/tracetreeitem.cpp
new file mode 100644 (file)
index 0000000..1e09908
--- /dev/null
+++ b/pv/view/tracetreeitem.cpp
@@ -0,0 +1,139 @@
+/*
+ * 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, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301 USA
+ */
+
+#include <assert.h>
+
+#include "view.hpp"
+
+#include "tracetreeitem.hpp"
+
+namespace pv {
+namespace view {
+
+TraceTreeItem::TraceTreeItem() :
+       owner_(nullptr),
+       layout_v_offset_(0),
+       visual_v_offset_(0),
+       v_offset_animation_(this, "visual_v_offset")
+{
+}
+
+int TraceTreeItem::layout_v_offset() const
+{
+       return layout_v_offset_;
+}
+
+void TraceTreeItem::set_layout_v_offset(int v_offset)
+{
+       if (layout_v_offset_ == v_offset)
+               return;
+
+       layout_v_offset_ = v_offset;
+
+       if (owner_)
+               owner_->extents_changed(false, true);
+}
+
+int TraceTreeItem::visual_v_offset() const
+{
+       return visual_v_offset_;
+}
+
+void TraceTreeItem::set_visual_v_offset(int v_offset)
+{
+       visual_v_offset_ = v_offset;
+
+       if (owner_)
+               owner_->row_item_appearance_changed(true, true);
+}
+
+void TraceTreeItem::force_to_v_offset(int v_offset)
+{
+       v_offset_animation_.stop();
+       layout_v_offset_ = visual_v_offset_ = v_offset;
+
+       if (owner_) {
+               owner_->row_item_appearance_changed(true, true);
+               owner_->extents_changed(false, true);
+       }
+}
+
+void TraceTreeItem::animate_to_layout_v_offset()
+{
+       if (visual_v_offset_ == layout_v_offset_ ||
+               (v_offset_animation_.endValue() == layout_v_offset_ &&
+               v_offset_animation_.state() == QAbstractAnimation::Running))
+               return;
+
+       v_offset_animation_.setDuration(100);
+       v_offset_animation_.setStartValue(visual_v_offset_);
+       v_offset_animation_.setEndValue(layout_v_offset_);
+       v_offset_animation_.setEasingCurve(QEasingCurve::OutQuad);
+       v_offset_animation_.start();
+}
+
+TraceTreeItemOwner* TraceTreeItem::owner() const
+{
+       return owner_;
+}
+
+void TraceTreeItem::set_owner(TraceTreeItemOwner *owner)
+{
+       assert(owner_ || owner);
+       v_offset_animation_.stop();
+
+       if (owner_) {
+               const int owner_offset = owner_->owner_visual_v_offset();
+               layout_v_offset_ += owner_offset;
+               visual_v_offset_ += owner_offset;
+       }
+
+       owner_ = owner;
+
+       if (owner_) {
+               const int owner_offset = owner_->owner_visual_v_offset();
+               layout_v_offset_ -= owner_offset;
+               visual_v_offset_ -= owner_offset;
+       }
+}
+
+int TraceTreeItem::get_visual_y() const
+{
+       assert(owner_);
+       return visual_v_offset_ + owner_->owner_visual_v_offset();
+}
+
+void TraceTreeItem::drag_by(const QPoint &delta)
+{
+       force_to_v_offset(drag_point_.y() + delta.y() -
+               owner_->owner_visual_v_offset());
+}
+
+QPoint TraceTreeItem::point(const QRect &rect) const
+{
+       return QPoint(rect.right(), get_visual_y());
+}
+
+void TraceTreeItem::hover_point_changed()
+{
+}
+
+} // namespace view
+} // namespace pv