/// <summary>
/// Validates the given cell state.
/// </summary>
public void UpdateEdgeState(mxCellState state, mxGeometry geo, mxCellState source, mxCellState target)
{
// This will remove edges with no terminals and no terminal points
// as such edges are invalid and produce NPEs in the edge styles.
// Also removes connected edges that have no visible terminals.
if ((graph.Model.GetTerminal(state.Cell, true) != null && source == null) ||
(source == null && geo.GetTerminalPoint(true) == null) ||
(graph.Model.GetTerminal(state.Cell, false) != null && target == null) ||
(target == null && geo.GetTerminalPoint(false) == null))
{
RemoveState(state.Cell, true);
}
else
{
UpdateFixedTerminalPoints(state, source, target);
UpdatePoints(state, geo.Points, source, target);
UpdateFloatingTerminalPoints(state, source, target);
if (state.AbsolutePointCount() < 2 || state.AbsolutePoints[0] == null || state
.AbsolutePoints[state.AbsolutePointCount() - 1] == null)
{
// This will remove edges with invalid points from the list of states in the view.
// Happens if the one of the terminals and the corresponding terminal point is null.
RemoveState(state.Cell, true);
}
else
{
UpdateEdgeBounds(state);
state.AbsoluteOffset = GetPoint(state, geo);
}
}
}
/// <summary>
/// Sets the initial absolute terminal points in the given state before the edge
/// style is computed.
/// </summary>
/// <param name="edge">Cell state whose initial terminal points should be updated.</param>
/// <param name="source">Cell state which represents the source terminal.</param>
/// <param name="target">Cell state which represents the target terminal.</param>
public void UpdateFixedTerminalPoints(mxCellState edge, mxCellState source, mxCellState target)
{
UpdateFixedTerminalPoint(edge, source, true,
graph.GetConnectionConstraint(edge, source, true));
UpdateFixedTerminalPoint(edge, target, false,
graph.GetConnectionConstraint(edge, target, false));
}
/// <summary>
/// Returns the perimeter function for the given state.
/// </summary>
public mxPerimeterFunction GetPerimeterFunction(mxCellState state)
{
object perimeter = null;
state.Style.TryGetValue(mxConstants.STYLE_PERIMETER, out perimeter);
// Converts string values to objects
if (perimeter is String)
{
string str = perimeter.ToString();
Object tmp = mxStyleRegistry.GetValue(str);
if (tmp == null)
{
tmp = mxUtils.Eval(str);
}
perimeter = tmp;
}
if (perimeter is mxPerimeterFunction)
{
return((mxPerimeterFunction)perimeter);
}
return(null);
}
/// <summary>
/// Updates the absolute points in the given state using the specified array
/// of points as the relative points.
/// </summary>
/// <param name="edge">Cell state whose absolute points should be updated.</param>
/// <param name="points">Array of points that constitute the relative points.</param>
/// <param name="source">Cell that represents the source terminal.</param>
/// <param name="target">Cell that represents the target terminal.</param>
public void UpdatePoints(mxCellState edge, List <mxPoint> points, mxCellState source, mxCellState target)
{
if (edge != null)
{
List <mxPoint> pts = new List <mxPoint>();
pts.Add(edge.AbsolutePoints[0]);
mxEdgeStyleFunction edgeStyle = GetEdgeStyle(edge, points, source, target);
if (edgeStyle != null)
{
mxCellState src = GetTerminalPort(edge, source, true);
mxCellState trg = GetTerminalPort(edge, target, false);
((mxEdgeStyleFunction)edgeStyle)(edge, src, trg, points, pts);
}
else if (points != null)
{
for (int i = 0; i < points.Count; i++)
{
if (points[i] is mxPoint)
{
mxPoint pt = points[i].Clone();
pts.Add(TransformControlPoint(edge, pt));
}
}
}
List <mxPoint> tmp = edge.AbsolutePoints;
pts.Add(tmp[tmp.Count - 1]);
edge.AbsolutePoints = pts;
}
}
/// <summary>
/// Sets the fixed source or target terminal point on the given edge.
/// </summary>
/// <param name="edge">State whose terminal point should be updated.</param>
/// <param name="terminal">State which represents the actual terminal.</param>
/// <param name="source">Boolean that specifies if the terminal is the source.</param>
/// <param name="constraint">Constraint that specifies the connection.</param>
public void UpdateFixedTerminalPoint(mxCellState edge, mxCellState terminal,
bool source, mxConnectionConstraint constraint)
{
mxPoint pt = null;
if (constraint != null)
{
pt = graph.GetConnectionPoint(terminal, constraint);
}
if (pt == null && terminal == null)
{
mxPoint orig = edge.Origin;
mxGeometry geo = graph.GetCellGeometry(edge.Cell);
pt = geo.GetTerminalPoint(source);
if (pt != null)
{
pt = new mxPoint(scale * (translate.X + pt.X + orig.X),
scale * (translate.Y + pt.Y + orig.Y));
}
}
edge.SetAbsoluteTerminalPoint(pt, source);
}
/// <summary>
/// Transforms the given control point to an absolute point.
/// </summary>
public mxPoint TransformControlPoint(mxCellState state, mxPoint pt)
{
mxPoint orig = state.Origin;
return(new mxPoint(scale * (pt.X + translate.X + orig.X),
scale * (pt.Y + translate.Y + orig.Y)));
}
/// <summary>
/// Returns a point that defines the location of the intersection point between
/// the perimeter and the line between the center of the shape and the given point.
/// </summary>
/// <param name="terminal">State for the source or target terminal.</param>
/// <param name="next">Point that lies outside of the given terminal.</param>
/// <param name="orthogonal">Specifies if the orthogonal projection onto
/// the perimeter should be returned. If this is false then the intersection
/// of the perimeter and the line between the next and the center point is
/// returned.</param>
/// <param name="border">Optional border between the perimeter and the shape.</param>
public mxPoint GetPerimeterPoint(mxCellState terminal, mxPoint next, bool orthogonal, double border)
{
mxPoint point = null;
if (terminal != null)
{
mxPerimeterFunction perimeter = GetPerimeterFunction(terminal);
if (perimeter != null && next != null)
{
mxRectangle bounds = GetPerimeterBounds(terminal, border);
if (bounds.Width > 0 || bounds.Height > 0)
{
point = perimeter(bounds, terminal, next, orthogonal);
}
}
if (point == null)
{
point = GetPoint(terminal);
}
}
return(point);
}
/// <summary>
/// Returns the y-coordinate of the center point for automatic routing.
/// </summary>
/// <returns>Returns the y-coordinate of the routing center point.</returns>
public double GetRoutingCenterY(mxCellState state)
{
float f = (state.Style != null) ? mxUtils.GetFloat(state.
Style, mxConstants.STYLE_ROUTING_CENTER_Y) : 0;
return(state.GetCenterY() + f * state.Height);
}
/// <summary>
/// Recursively creates the cell state for the given cell if visible is true and
/// the given cell is visible. If the cell is not visible but the state exists
/// then it is removed using removeState.
/// </summary>
/// <param name="cell">Cell whose cell state should be created.</param>
/// <param name="visible">Boolean indicating if the cell should be visible.</param>
public Object ValidateCell(Object cell, Boolean visible)
{
if (cell != null)
{
visible = visible && graph.IsCellVisible(cell);
mxCellState state = GetState(cell, visible);
if (state != null && !visible)
{
RemoveState(cell);
}
else
{
mxIGraphModel model = graph.Model;
int childCount = model.GetChildCount(cell);
for (int i = 0; i < childCount; i++)
{
ValidateCell(
model.GetChildAt(cell, i),
visible && !graph.IsCellCollapsed(cell));
}
}
}
return(cell);
}
/// <summary>
/// Updates the absoluteOffset of the given vertex cell state. This takes
/// into account the label position styles.
/// </summary>
/// <param name="state">Cell state whose absolute offset should be updated.</param>
public void UpdateVertexLabelOffset(mxCellState state)
{
string horizontal = mxUtils.GetString(state.Style,
mxConstants.STYLE_LABEL_POSITION,
mxConstants.ALIGN_CENTER);
if (horizontal.Equals(mxConstants.ALIGN_LEFT))
{
state.AbsoluteOffset.X -= state.Width;
}
else if (horizontal.Equals(mxConstants.ALIGN_RIGHT))
{
state.AbsoluteOffset.X += state.Width;
}
string vertical = mxUtils.GetString(state.Style,
mxConstants.STYLE_VERTICAL_LABEL_POSITION,
mxConstants.ALIGN_MIDDLE);
if (vertical.Equals(mxConstants.ALIGN_TOP))
{
state.AbsoluteOffset.Y -= state.Height;
}
else if (vertical.Equals(mxConstants.ALIGN_BOTTOM))
{
state.AbsoluteOffset.Y += state.Height;
}
}
/// <summary>
/// Returns the perimeter bounds for the given terminal, edge pair.
/// </summary>
public mxRectangle GetPerimeterBounds(mxCellState terminal, double border)
{
if (terminal != null)
{
border += mxUtils.GetDouble(terminal.Style, mxConstants.STYLE_PERIMETER_SPACING);
}
return(terminal.GetPerimeterBounds(border * scale));
}
/// <summary>
/// Shortcut to removeState with recurse set to false.
/// </summary>
public mxCellState RemoveState(Object cell)
{
mxCellState state = null;
if (states.ContainsKey(cell))
{
state = states[cell];
states.Remove(cell);
}
return(state);
}
/// <summary>
/// Updates the absolute terminal point in the given state for the given
/// start and end state, where start is the source if source is true.
/// </summary>
/// <param name="edge">State whose terminal point should be updated.</param>
/// <param name="start">for the terminal on "this" side of the edge.</param>
/// <param name="end">for the terminal on the other side of the edge.</param>
/// <param name="source">Boolean indicating if start is the source terminal state.</param>
public void UpdateFloatingTerminalPoint(mxCellState edge, mxCellState start,
mxCellState end, bool source)
{
start = GetTerminalPort(edge, start, source);
mxPoint next = GetNextPoint(edge, end, source);
double border = mxUtils.GetDouble(edge.Style, mxConstants.STYLE_PERIMETER_SPACING);
border += mxUtils.GetDouble(edge.Style, (source) ?
mxConstants.STYLE_SOURCE_PERIMETER_SPACING :
mxConstants.STYLE_TARGET_PERIMETER_SPACING);
mxPoint pt = GetPerimeterPoint(start, next, graph.IsOrthogonal(edge), border);
edge.SetAbsoluteTerminalPoint(pt, source);
}
/// <summary>
/// Updates the terminal points in the given state after the edge style was
/// computed for the edge.
/// </summary>
/// <param name="state">State whose terminal points should be updated.</param>
/// <param name="source">State that represents the source terminal.</param>
/// <param name="target">State that represents the target terminal.</param>
public void UpdateFloatingTerminalPoints(mxCellState state, mxCellState source, mxCellState target)
{
mxPoint p0 = state.AbsolutePoints[0];
mxPoint pe = state.AbsolutePoints[state.AbsolutePointCount() - 1];
if (pe == null && target != null)
{
UpdateFloatingTerminalPoint(state, target, source, false);
}
if (p0 == null && source != null)
{
UpdateFloatingTerminalPoint(state, source, target, true);
}
}
/// <summary>
/// Returns the states for the given array of cells. The array contains
/// all states that are not null, that is, the returned array may have
/// less elements than the given array.
/// </summary>
public mxCellState[] GetCellStates(Object[] cells)
{
List <mxCellState> result = new List <mxCellState>(cells.Length);
for (int i = 0; i < cells.Length; i++)
{
mxCellState state = GetState(cells[i]);
if (state != null)
{
result.Add(state);
}
}
return(result.ToArray());
}
/// <summary>
/// Returns a clone of this state where all members are deeply cloned
/// except the view and cell references, which are copied with no
/// cloning to the new instance.
/// </summary>
/// <returns></returns>
new public mxCellState Clone()
{
mxCellState clone = new mxCellState(view, cell, style);
if (absolutePoints != null)
{
clone.absolutePoints = new List <mxPoint>();
foreach (mxPoint pt in absolutePoints)
{
clone.absolutePoints.Add(pt.Clone());
}
}
if (origin != null)
{
clone.origin = origin.Clone();
}
if (absoluteOffset != null)
{
clone.absoluteOffset = absoluteOffset.Clone();
}
if (labelBounds != null)
{
clone.labelBounds = labelBounds.Clone();
}
if (boundingBox != null)
{
clone.boundingBox = boundingBox.Clone();
}
clone.terminalDistance = terminalDistance;
clone.segments = segments;
clone.length = length;
clone.x = x;
clone.y = y;
clone.width = width;
clone.height = height;
return(clone);
}
/// <summary>
/// Validates the cell state for the given cell.
/// </summary>
/// <param name="cell">Cell whose cell state should be validated.</param>
/// <param name="recurse">Boolean indicating if the children of the cell should be
/// validated.</param>
/// <returns></returns>
public mxCellState ValidateCellState(Object cell, Boolean recurse)
{
mxCellState state = null;
if (cell != null)
{
state = GetState(cell);
if (state != null)
{
mxIGraphModel model = graph.Model;
if (state.Invalid)
{
state.Invalid = false;
ValidateCellState(model.GetParent(cell), false);
mxCellState source = ValidateCellState(GetVisibleTerminal(cell, true), false);
mxCellState target = ValidateCellState(GetVisibleTerminal(cell, false), false);
UpdateCellState(state, source, target);
if (model.IsEdge(cell) || model.IsVertex(cell))
{
UpdateLabelBounds(state);
UpdateBoundingBox(state);
}
}
if (recurse)
{
int childCount = model.GetChildCount(cell);
for (int i = 0; i < childCount; i++)
{
ValidateCellState(model.GetChildAt(cell, i));
}
}
}
}
return(state);
}
/// <summary>
/// Returns the given terminal or the port defined in the given edge state if a
/// cell state exists for that port.
/// </summary>
public mxCellState GetTerminalPort(mxCellState state, mxCellState terminal, bool source)
{
string key = (source) ? mxConstants.STYLE_SOURCE_PORT
: mxConstants.STYLE_TARGET_PORT;
string id = mxUtils.GetString(state.Style, key);
if (id != null && graph.Model is mxGraphModel)
{
mxCellState tmp = GetState(((mxGraphModel)graph.Model).GetCell(id));
// Only uses ports where a cell state exists
if (tmp != null)
{
terminal = tmp;
}
}
return(terminal);
}
/// <summary>
/// Returns the nearest point in the list of absolute points or the center
/// of the opposite terminal.
/// </summary>
/// <param name="edge">State that represents the edge.</param>
/// <param name="opposite">State that represents the opposite terminal.</param>
/// <param name="source">Boolean indicating if the next point for the source or target
/// should be returned.</param>
public mxPoint GetNextPoint(mxCellState edge, mxCellState opposite, bool source)
{
List <mxPoint> pts = edge.AbsolutePoints;
mxPoint point = null;
if (pts != null && pts.Count >= 2)
{
int count = pts.Count;
int index = (source) ? Math.Min(1, count - 1) : Math.Max(0, count - 2);
point = pts[index];
}
if (point == null && opposite != null)
{
point = new mxPoint(opposite.GetCenterX(), opposite.GetCenterY());
}
return(point);
}
/// <summary>
/// Returns the cell state for the given cell. If create is true, then
/// the state is created if it does not yet exist.
/// </summary>
/// <param name="cell">Cell for which a new state should be returned.</param>
/// <param name="create">Boolean indicating if a new state should be created if it
/// does not yet exist.</param>
/// <returns>Returns the state for the given cell.</returns>
public mxCellState GetState(Object cell, bool create)
{
mxCellState state = null;
if (cell != null)
{
if (states.ContainsKey(cell))
{
state = states[cell];
}
else if (create && graph.IsCellVisible(cell))
{
state = CreateState(cell);
states[cell] = state;
}
}
return(state);
}
/// <summary>
/// Updates the label bounds in the given state.
/// </summary>
/// <param name="state"></param>
public void UpdateLabelBounds(mxCellState state)
{
Object cell = state.Cell;
Dictionary <string, Object> style = state.Style;
if (mxUtils.GetString(style, mxConstants.STYLE_OVERFLOW, "").Equals("fill"))
{
state.LabelBounds = new mxRectangle(state);
}
else
{
string label = graph.GetLabel(cell);
mxRectangle vertexBounds = (!graph.Model.IsEdge(cell)) ?
state : null;
state.LabelBounds = mxUtils.GetLabelPaintBounds(label,
style, false, state.AbsoluteOffset, vertexBounds,
scale);
}
}
/// <summary>
/// Returns the edge style function to be used to render the given edge
/// state.
/// </summary>
public mxEdgeStyleFunction GetEdgeStyle(mxCellState edge, List <mxPoint> points,
Object source, Object target)
{
object edgeStyle = null;
if (source != null && source == target)
{
edge.Style.TryGetValue(mxConstants.STYLE_LOOP, out edgeStyle);
if (edgeStyle == null)
{
edgeStyle = graph.DefaultLoopStyle;
}
}
else if (!mxUtils.IsTrue(edge.Style,
mxConstants.STYLE_NOEDGESTYLE, false))
{
edge.Style.TryGetValue(mxConstants.STYLE_EDGE, out edgeStyle);
}
// Converts string values to objects
if (edgeStyle is String)
{
string str = edgeStyle.ToString();
Object tmp = mxStyleRegistry.GetValue(str);
if (tmp == null)
{
tmp = mxUtils.Eval(str);
}
edgeStyle = tmp;
}
if (edgeStyle is mxEdgeStyleFunction)
{
return((mxEdgeStyleFunction)edgeStyle);
}
return(null);
}
/// <summary>
/// Returns the bounding box of the shape and the label for the given
/// cell state and its children if recurse is true.
/// </summary>
/// <param name="state">Cell state whose bounding box should be returned.</param>
/// <param name="recurse">Boolean indicating if the children should be included.</param>
public mxRectangle GetBoundingBox(mxCellState state, Boolean recurse)
{
mxRectangle bbox = null;
if (state != null)
{
if (state.BoundingBox != null)
{
bbox = (mxRectangle)state.BoundingBox.Clone();
}
if (recurse)
{
mxIGraphModel model = graph.Model;
int childCount = model.GetChildCount(state.Cell);
for (int i = 0; i < childCount; i++)
{
mxRectangle bounds = GetBoundingBox(
GetState(model.GetChildAt(state.Cell, i)), true);
if (bounds != null)
{
if (bbox == null)
{
bbox = bounds;
}
else
{
bbox.Add(bounds);
}
}
}
}
}
return(bbox);
}
/// <summary>
/// Removes and returns the mxCellState for the given cell.
/// </summary>
/// <param name="cell">mxCell for which the mxCellState should be removed.</param>
/// <returns>Returns the mxCellState that has been removed.</returns>
public mxCellState RemoveState(Object cell, Boolean recurse)
{
if (recurse)
{
mxIGraphModel model = graph.Model;
int childCount = model.GetChildCount(cell);
for (int i = 0; i < childCount; i++)
{
RemoveState(model.GetChildAt(cell, i), true);
}
}
mxCellState state = null;
if (states.ContainsKey(cell))
{
state = states[cell];
states.Remove(cell);
}
return(state);
}
/// <summary>
/// Returns the bounding box for an array of cells or null, if no cells are
/// specified.
/// </summary>
public mxRectangle GetBounds(Object[] cells, bool boundingBox)
{
mxRectangle result = null;
if (cells != null && cells.Length > 0)
{
mxIGraphModel model = graph.Model;
for (int i = 0; i < cells.Length; i++)
{
if (model.IsVertex(cells[i]) || model.IsEdge(cells[i]))
{
mxCellState state = GetState(cells[i]);
if (state != null)
{
mxRectangle tmp = (boundingBox) ? state.BoundingBox : state;
if (tmp != null)
{
if (result == null)
{
result = new mxRectangle(tmp);
}
else
{
result.Add(tmp);
}
}
}
}
}
}
return(result);
}
/// <summary>
/// Validates the given cell state.
/// </summary>
public void UpdateVertexState(mxCellState state, mxGeometry geo)
{
// LATER: Add support for rotation
UpdateVertexLabelOffset(state);
}
/// <summary>
/// Returns a point that defines the location of the intersection point between
/// the perimeter and the line between the center of the shape and the given point.
/// </summary>
public mxPoint GetPerimeterPoint(mxCellState terminal, mxPoint next, bool orthogonal)
{
return(GetPerimeterPoint(terminal, next, orthogonal, 0));
}
/// <summary>
/// Shortcut to validateCell with visible set to true.
/// </summary>
public mxRectangle GetBoundingBox(mxCellState state)
{
return(GetBoundingBox(state, true));
}
/// <summary>
/// Updates the given cell state.
/// </summary>
/// <param name="state"></param>
public void UpdateCellState(mxCellState state, mxCellState source, mxCellState target)
{
state.AbsoluteOffset.X = 0;
state.AbsoluteOffset.Y = 0;
state.Origin.X = 0;
state.Origin.Y = 0;
state.Length = 0;
mxIGraphModel model = graph.Model;
mxCellState pState = GetState(model.GetParent(state.Cell));
if (pState != null)
{
state.Origin.X += pState.Origin.X;
state.Origin.Y += pState.Origin.Y;
}
mxPoint offset = graph.GetChildOffsetForCell(state.Cell);
if (offset != null)
{
state.Origin.X += offset.X;
state.Origin.Y += offset.Y;
}
mxGeometry geo = graph.GetCellGeometry(state.Cell);
if (geo != null)
{
if (!model.IsEdge(state.Cell))
{
mxPoint origin = state.Origin;
offset = geo.Offset;
if (offset == null)
{
offset = EMPTY_POINT;
}
if (geo.Relative && pState != null)
{
if (model.IsEdge(pState.Cell))
{
mxPoint orig = GetPoint(pState, geo);
if (orig != null)
{
origin.X += (orig.X / scale) - pState.Origin.X - translate.X;
origin.Y += (orig.Y / scale) - pState.Origin.Y - translate.Y;
}
}
else
{
origin.X += geo.X * pState.Width / scale + offset.X;
origin.Y += geo.Y * pState.Height / scale + offset.Y;
}
}
else
{
state.AbsoluteOffset = new mxPoint(scale * offset.X,
scale * offset.Y);
origin.X += geo.X;
origin.Y += geo.Y;
}
}
state.X = scale * (translate.X + state.Origin.X);
state.Y = scale * (translate.Y + state.Origin.Y);
state.Width = scale * geo.Width;
state.Height = scale * geo.Height;
if (model.IsVertex(state.Cell))
{
UpdateVertexState(state, geo);
}
if (model.IsEdge(state.Cell))
{
UpdateEdgeState(state, geo, source, target);
}
}
}
/// <summary>
/// Updates the bounding box in the given cell state.
/// </summary>
/// <param name="state">Cell state whose bounding box should be
/// updated.</param>
/// <returns></returns>
public mxRectangle UpdateBoundingBox(mxCellState state)
{
// Gets the cell bounds and adds shadows and markers
mxRectangle rect = new mxRectangle(state.GetRectangle());
Dictionary <string, Object> style = state.Style;
// Adds extra pixels for the marker and stroke assuming
// that the border stroke is centered around the bounds
// and the first pixel is drawn inside the bounds
double strokeWidth = Math.Max(1, Math.Round(mxUtils.GetInt(style,
mxConstants.STYLE_STROKEWIDTH, 1)
* scale));
strokeWidth -= Math.Max(1, strokeWidth / 2);
if (graph.Model.IsEdge(state.Cell))
{
int ms = 0;
if (style.ContainsKey(mxConstants.STYLE_ENDARROW) ||
style.ContainsKey(mxConstants.STYLE_STARTARROW))
{
ms = (int)Math.Round(mxConstants.DEFAULT_MARKERSIZE * scale);
}
// Adds the strokewidth
rect.Grow(ms + strokeWidth);
// Adds worst case border for an arrow shape
if (mxUtils.GetString(style, mxConstants.STYLE_SHAPE, "").Equals(
mxConstants.SHAPE_ARROW))
{
rect.Grow(mxConstants.ARROW_WIDTH / 2);
}
}
else
{
rect.Grow(strokeWidth);
}
// Adds extra pixels for the shadow
if (mxUtils.IsTrue(style, mxConstants.STYLE_SHADOW))
{
rect.Width += mxConstants.SHADOW_OFFSETX;
rect.Height += mxConstants.SHADOW_OFFSETY;
}
// Adds oversize images in labels
if (mxUtils.GetString(style, mxConstants.STYLE_SHAPE, "").Equals(
mxConstants.SHAPE_LABEL))
{
if (mxUtils.GetString(style, mxConstants.STYLE_IMAGE) != null)
{
double w = mxUtils.GetInt(style,
mxConstants.STYLE_IMAGE_WIDTH,
mxConstants.DEFAULT_IMAGESIZE) * scale;
double h = mxUtils.GetInt(style,
mxConstants.STYLE_IMAGE_HEIGHT,
mxConstants.DEFAULT_IMAGESIZE) * scale;
double x = state.X;
double y = 0;
string imgAlign = mxUtils
.GetString(style, mxConstants.STYLE_IMAGE_ALIGN,
mxConstants.ALIGN_LEFT);
string imgValign = mxUtils.GetString(style,
mxConstants.STYLE_IMAGE_VERTICAL_ALIGN,
mxConstants.ALIGN_MIDDLE);
if (imgAlign.Equals(mxConstants.ALIGN_RIGHT))
{
x += state.Width - w;
}
else if (imgAlign.Equals(mxConstants.ALIGN_CENTER))
{
x += (state.Width - w) / 2;
}
if (imgValign.Equals(mxConstants.ALIGN_TOP))
{
y = state.Y;
}
else if (imgValign.Equals(mxConstants.ALIGN_BOTTOM))
{
y = state.Y + state.Height - h;
}
else
{
y = state.Y + (state.Height - h) / 2;
}
rect.Add(new mxRectangle(x, y, w, h));
}
}
// Adds the rotated bounds to the bounding box if the
// shape is rotated
double rotation = mxUtils.GetDouble(style, mxConstants.STYLE_ROTATION);
mxRectangle bbox = mxUtils.GetBoundingBox(rect, rotation);
// Add the rotated bounding box to the non-rotated so
// that all handles are also covered
if (bbox != null)
{
rect.Add(bbox);
}
// Unifies the cell bounds and the label bounds
if (!mxUtils.GetString(style, mxConstants.STYLE_OVERFLOW, "").Equals("hidden"))
{
rect.Add(state.LabelBounds);
}
state.BoundingBox = rect;
return(rect);
}
