TraceGroup: Implemented stacking

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

diff --git a/pv/view/rowitem.cpp b/pv/view/rowitem.cpp
index c78f9eef2cba0af4f22b4d9dca555801c98f7fc4..7bf52124dac7159fed013600579d07d8d62dc284 100644 (file)
--- a/pv/view/rowitem.cpp
+++ b/pv/view/rowitem.cpp
@@ -29,18 +29,59 @@ namespace view {
 
 RowItem::RowItem() :
        _owner(NULL),
-       _v_offset(0)
+       _layout_v_offset(0),
+       _visual_v_offset(0),
+       _v_offset_animation(this, "visual_v_offset")
 {
 }
 
-int RowItem::v_offset() const
+int RowItem::layout_v_offset() const
 {
-       return _v_offset;
+       return _layout_v_offset;
 }
 
-void RowItem::set_v_offset(int v_offset)
+void RowItem::set_layout_v_offset(int v_offset)
 {
-       _v_offset = v_offset;
+       if (_layout_v_offset == v_offset)
+               return;
+
+       _layout_v_offset = v_offset;
+
+       if (_owner)
+               _owner->extents_changed(false, true);
+}
+
+int RowItem::visual_v_offset() const
+{
+       return _visual_v_offset;
+}
+
+void RowItem::set_visual_v_offset(int v_offset)
+{
+       _visual_v_offset = v_offset;
+
+       if (_owner)
+               _owner->appearance_changed(true, true);
+}
+
+void RowItem::force_to_v_offset(int v_offset)
+{
+       _v_offset_animation.stop();
+       _layout_v_offset = _visual_v_offset = v_offset;
+}
+
+void RowItem::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();
 }
 
 RowItemOwner* RowItem::owner() const
@@ -50,14 +91,33 @@ RowItemOwner* RowItem::owner() const
 
 void RowItem::set_owner(RowItemOwner *owner)
 {
-       assert((_owner && !owner) || (!_owner && 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 RowItem::get_y() const
+int RowItem::get_visual_y() const
 {
        assert(_owner);
-       return _v_offset + _owner->owner_v_offset();
+       return _visual_v_offset + _owner->owner_visual_v_offset();
+}
+
+QPoint RowItem::point() const
+{
+       return QPoint(0, visual_v_offset());
 }
 
 void RowItem::paint_back(QPainter &p, int left, int right)