/// <summary>
/// Creates an image for the given arguments.
/// </summary>
public static Image CreateImage(mxGraph graph, Object[] cells, double scale, Color?background,
bool antiAlias, mxRectangle clip, mxGdiCanvas graphicsCanvas)
{
mxImageCanvas canvas = (mxImageCanvas)DrawCells(graph, cells, scale, clip,
new ImageCanvasFactory(graphicsCanvas, background, antiAlias));
return(canvas.Destroy());
}
/// <summary>
/// Returns true if the given object equals this rectangle.
/// </summary>
/// <returns>Returns true if obj is equal.</returns>
new public Boolean Equals(Object obj)
{
if (obj is mxRectangle)
{
mxRectangle rect = (mxRectangle)obj;
return(rect.X == X &&
rect.Y == Y &&
rect.Width == Width &&
rect.Height == height);
}
return(false);
}
/// <summary>
/// Adds the given rectangle to this rectangle.
/// </summary>
public void Add(mxRectangle rect)
{
if (rect != null)
{
double minX = Math.Min(x, rect.x);
double minY = Math.Min(y, rect.y);
double maxX = Math.Max(x + width, rect.x + rect.width);
double maxY = Math.Max(y + height, rect.y + rect.height);
x = minX;
y = minY;
width = maxX - minX;
height = maxY - minY;
}
}
/// <summary>
/// Draws the given cells using a Graphics2D canvas and returns the buffered image
/// that represents the cells.
/// </summary>
public static mxICanvas DrawCells(mxGraph graph, Object[] cells, double scale,
mxRectangle clip, CanvasFactory factory)
{
mxICanvas canvas = null;
if (cells == null)
{
cells = new Object[] { graph.Model.Root };
}
if (cells != null)
{
// Gets the current state of the view
mxGraphView view = graph.View;
Dictionary <Object, mxCellState> states = view.States;
double oldScale = view.Scale;
// Keeps the existing translation as the cells might
// be aligned to the grid in a different way in a graph
// that has a translation other than zero
bool eventsEnabled = view.IsEventsEnabled;
// Disables firing of scale events so that there is no
// repaint or update of the original graph
view.IsEventsEnabled = false;
try
{
// TODO: Factor-out into mxTemporaryCellStates class
view.States = new Dictionary <Object, mxCellState>();
view.Scale = scale;
// Validates the vertices and edges without adding them to
// the model so that the original cells are not modified
for (int i = 0; i < cells.Length; i++)
{
view.ValidateCellState(view.ValidateCell(cells[i]));
}
if (clip == null)
{
clip = graph.GetPaintBounds(cells);
}
if (clip != null && clip.Width > 0 && clip.Height > 0)
{
Rectangle rect = clip.GetRectangle();
canvas = factory.CreateCanvas(rect.Width + 1,
rect.Height + 1);
if (canvas != null)
{
double previousScale = canvas.Scale;
Point previousTranslate = canvas.Translate;
try
{
canvas.Translate = new Point(-rect.X, -rect.Y);
canvas.Scale = view.Scale;
for (int i = 0; i < cells.Length; i++)
{
graph.DrawCell(canvas, cells[i]);
}
}
finally
{
canvas.Scale = previousScale;
canvas.Translate = previousTranslate;
}
}
}
}
finally
{
view.Scale = oldScale;
view.States = states;
view.IsEventsEnabled = eventsEnabled;
}
}
return(canvas);
}
/// <summary>
/// Creates an image for the given arguments.
/// </summary>
public static Image CreateImage(mxGraph graph, Object[] cells, double scale, Color?background,
bool antiAlias, mxRectangle clip)
{
return(CreateImage(graph, cells, scale, background, antiAlias, clip, new mxGdiCanvas()));
}
/// <summary>
/// Constructs a copy of the given rectangle.
/// </summary>
/// <param name="rect">Rectangle to construct a copy of.</param>
public mxRectangle(mxRectangle rect)
: this(rect.X, rect.Y, rect.Width, rect.Height)
{
}