private KTreeNodeMeasurements(KTreeNodeMeasurements orig, int x, int y)
{
this._node = orig._node;
this._options = orig._options;
this._paddingOveral = orig._paddingOveral;
this._sizes = (Size[])orig._sizes.Clone();
// The node rectangle is the sum of the widths, and the maximum height (plus padding).
// TODO: special handling for control part, make that fit with e.g. a Dock option?
_nodeRect = new Rectangle(orig._nodeRect.X + x, y + orig._nodeRect.Y,
_sizes.Select((i) => i.Width).Sum() + _paddingOveral.Horizontal,
_sizes.Select((i) => i.Height).Max() + _paddingOveral.Vertical);
for (int i = 0; i < (int)Part.None; ++i)
{
_paddingInternal[i] = new Padding();
// Align any parts whose height does not match the total height
if (_sizes[i].Height != InnerRect.Height)
{
_paddingInternal[i].Bottom = (InnerRect.Height - _sizes[i].Height) / 2;
_paddingInternal[i].Top = (InnerRect.Height - _sizes[i].Height) - _paddingInternal[i].Bottom;
// Quick hack to make sure checkboxes are properly aligned, make the rect square again
// TODO: use padding/dock modes for this
if (i == (int)Part.CheckBox && !_sizes[i].IsEmpty && _sizes[i].IsSquare())
{
_paddingInternal[i].Left = _paddingInternal[i].Bottom;
_paddingInternal[i].Right = _paddingInternal[i].Top;
}
}
}
}
protected KTreeNodeMeasurements GetNodeSize(Graphics graphics, KTreeNode node)
{
KTreeNodeMeasurements dimension = new KTreeNodeMeasurements(node, _tree);
// Expander
dimension[KTreeNodeMeasurements.Part.Expander] = GetExpanderSize(graphics, node);
// Checkbox
if (node.Owner.CheckManager != null && node.HasCheckBox)
{
dimension[KTreeNodeMeasurements.Part.CheckBox] = CheckBoxRenderer.GetGlyphSize(graphics, CheckBoxState.CheckedNormal);
}
// Image
if (_tree.Images != null)
{
// Image size specified by imagelist
// Scale depending on resolution
dimension[KTreeNodeMeasurements.Part.Image] = _tree.Images.ImageSize.ScaleDpi(graphics);
}
// Text size
dimension[KTreeNodeMeasurements.Part.Text] = TextRenderer.MeasureText(graphics, node.Text, _tree.Font, Size.Empty, TEXT_FLAGS);
// Control
if (node.Control != null)
{
dimension[KTreeNodeMeasurements.Part.Control] = node.Control.PreferredSize;
}
return(dimension);
}
/// <summary>
///
/// </summary>
/// <param name="graphics">The graphics to render into</param>
/// <param name="node">The node</param>
/// <param name="scrollOffset">The current scrollbar offset</param>
/// <param name="highlight">If not null, the part of the node that is highlighted. May be Part.None to indicate the row is
/// highlighted, but not a specific part</param>
public void RenderNode(Graphics graphics, KTreeNode node, Point scrollOffset, KTreeNodeMeasurements.Part?highlight)
{
// Make sure the node has been measured
if (node.EffectiveDimension == null)
{
MeasureNode(graphics, node);
}
KTreeNodeMeasurements dims = node.EffectiveDimension.Offset(-scrollOffset.X, -scrollOffset.Y);
Rectangle containerRect = dims.NodeRect;
containerRect.X = _clientRect.X;
containerRect.Width = Math.Max(_totalRect.Width, _clientRect.Width);
// Overlap the rectangle with the control border, to prevent duplicate lines
containerRect = containerRect.Expand(new Padding(_tree.BorderThickness));
// Selection background
RenderNodeOutline(graphics, node, _tree.FullRowSelect ? containerRect : dims.NodeRect, highlight);
// Expander
if (node.ChildLoader.NeedsExpander)
{
RenderNodeExpander(graphics, node, dims.GetPartRect(KTreeNodeMeasurements.Part.Expander, true), highlight);
}
// Checkbox
if (_tree.CheckManager != null && node.HasCheckBox)
{
RenderCheckBox(graphics, node, dims.GetPartRect(KTreeNodeMeasurements.Part.CheckBox, true), highlight);
}
// Images
if (_tree.Images != null && node.ImageIndex.HasValue && node.ImageIndex >= 0 && node.ImageIndex < _tree.Images.Images.Count)
{
Rectangle imageRect = dims.GetPartRect(KTreeNodeMeasurements.Part.Image, true);
// TODO: if the rectangle is larger than the image, this probably leads to upscaling.
// if the imagelist stores high-res icons as 16x16, that throws away resolution.
// make a custom image list to handle this? That could also handle scaling automatically
Image image = _tree.Images.Images[node.ImageIndex.Value];
graphics.DrawImage(image, imageRect.X, imageRect.Y, imageRect.Width, imageRect.Height);
}
// Text
RenderNodeText(graphics, node, dims.GetPartRect(KTreeNodeMeasurements.Part.Text, true), highlight);
// Control
if (node.Control != null)
{
node.Control.Bounds = dims.GetPartRect(KTreeNodeMeasurements.Part.Control, true);
}
}
internal KTreeNodeMeasurements MeasureNode(Graphics graphics, KTreeNode node)
{
// Determine the row rectangle
KTreeNodeMeasurements dims = GetNodeSize(graphics, node).Offset(_totalRect.X, _totalRect.Height);
node.EffectiveDimension = dims;
// Set up for the next node
_totalRect.Height += dims.NodeRect.Height;
_totalRect.Width = Math.Max(_totalRect.Right, dims.NodeRect.Right) - _totalRect.X;
return(dims);
}