pv/view/tracetreeitem.cpp

   1 /*
   2  * This file is part of the PulseView project.
   3  *
   4  * Copyright (C) 2013 Joel Holdsworth <joel@airwebreathe.org.uk>
   5  *
   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.
  10  *
  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.
  15  *
  16  * You should have received a copy of the GNU General Public License
  17  * along with this program; if not, write to the Free Software
  18  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301 USA
  19  */
  20
  21 #include <assert.h>
  22
  23 #include "view.hpp"
  24
  25 #include "tracetreeitem.hpp"
  26
  27 namespace pv {
  28 namespace views {
  29 namespace TraceView {
  30
  31 TraceTreeItem::TraceTreeItem() :
  32         owner_(nullptr),
  33         layout_v_offset_(0),
  34         visual_v_offset_(0),
  35         v_offset_animation_(this, "visual_v_offset")
  36 {
  37 }
  38
  39 void TraceTreeItem::select(bool select)
  40 {
  41         ViewItem::select(select);
  42         owner_->row_item_appearance_changed(true, true);
  43 }
  44
  45 int TraceTreeItem::layout_v_offset() const
  46 {
  47         return layout_v_offset_;
  48 }
  49
  50 void TraceTreeItem::set_layout_v_offset(int v_offset)
  51 {
  52         if (layout_v_offset_ == v_offset)
  53                 return;
  54
  55         layout_v_offset_ = v_offset;
  56
  57         if (owner_)
  58                 owner_->extents_changed(false, true);
  59 }
  60
  61 int TraceTreeItem::visual_v_offset() const
  62 {
  63         return visual_v_offset_;
  64 }
  65
  66 void TraceTreeItem::set_visual_v_offset(int v_offset)
  67 {
  68         visual_v_offset_ = v_offset;
  69
  70         if (owner_)
  71                 owner_->row_item_appearance_changed(true, true);
  72 }
  73
  74 void TraceTreeItem::force_to_v_offset(int v_offset)
  75 {
  76         v_offset_animation_.stop();
  77         layout_v_offset_ = visual_v_offset_ = v_offset;
  78
  79         if (owner_) {
  80                 owner_->row_item_appearance_changed(true, true);
  81                 owner_->extents_changed(false, true);
  82         }
  83 }
  84
  85 void TraceTreeItem::animate_to_layout_v_offset()
  86 {
  87         if (visual_v_offset_ == layout_v_offset_ ||
  88                 (v_offset_animation_.endValue() == layout_v_offset_ &&
  89                 v_offset_animation_.state() == QAbstractAnimation::Running))
  90                 return;
  91
  92         v_offset_animation_.setDuration(100);
  93         v_offset_animation_.setStartValue(visual_v_offset_);
  94         v_offset_animation_.setEndValue(layout_v_offset_);
  95         v_offset_animation_.setEasingCurve(QEasingCurve::OutQuad);
  96         v_offset_animation_.start();
  97 }
  98
  99 TraceTreeItemOwner* TraceTreeItem::owner() const
 100 {
 101         return owner_;
 102 }
 103
 104 void TraceTreeItem::set_owner(TraceTreeItemOwner *owner)
 105 {
 106         assert(owner_ || owner);
 107         v_offset_animation_.stop();
 108
 109         if (owner_) {
 110                 const int owner_offset = owner_->owner_visual_v_offset();
 111                 layout_v_offset_ += owner_offset;
 112                 visual_v_offset_ += owner_offset;
 113         }
 114
 115         owner_ = owner;
 116
 117         if (owner_) {
 118                 const int owner_offset = owner_->owner_visual_v_offset();
 119                 layout_v_offset_ -= owner_offset;
 120                 visual_v_offset_ -= owner_offset;
 121         }
 122 }
 123
 124 int TraceTreeItem::get_visual_y() const
 125 {
 126         assert(owner_);
 127         return visual_v_offset_ + owner_->owner_visual_v_offset();
 128 }
 129
 130 void TraceTreeItem::drag_by(const QPoint &delta)
 131 {
 132         assert(owner_);
 133         force_to_v_offset(drag_point_.y() + delta.y() -
 134                 owner_->owner_visual_v_offset());
 135 }
 136
 137 QPoint TraceTreeItem::point(const QRect &rect) const
 138 {
 139         return QPoint(rect.right(), get_visual_y());
 140 }
 141
 142 void TraceTreeItem::set_bgcolour_state(bool state)
 143 {
 144        bgcolour_state_ = state;
 145 }
 146
 147 } // namespace TraceView
 148 } // namespace views
 149 } // namespace pv