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public AddRect ( |
||
| transform | ||
| rect | ||
| return | void | |
static CTFrame CreateFrame (LayoutInfo li)
{
if (string.IsNullOrEmpty (li.Text))
return null;
using (CTFramesetter framesetter = new CTFramesetter (CreateAttributedString (li))) {
CGPath path = new CGPath ();
bool ellipsize = li.Width.HasValue && li.TextTrimming == TextTrimming.WordElipsis;
path.AddRect (new RectangleF (0, 0, li.Width.HasValue && !ellipsize ? li.Width.Value : float.MaxValue, li.Height ?? float.MaxValue));
return framesetter.GetFrame (new NSRange (0, li.Text.Length), path, null);
}
}
/// <summary>
/// Draws a rectangle.
/// </summary>
/// <param name="rect">The rectangle.</param>
/// <param name="fill">The fill color.</param>
/// <param name="stroke">The stroke color.</param>
/// <param name="thickness">The stroke thickness.</param>
public override void DrawRectangle(OxyRect rect, OxyColor fill, OxyColor stroke, double thickness)
{
this.SetAlias (true);
var convertedRect = rect.ConvertAliased ();
if (fill.IsVisible ()) {
this.SetFill (fill);
using (var path = new CGPath ()) {
path.AddRect (convertedRect);
this.gctx.AddPath (path);
}
this.gctx.DrawPath (CGPathDrawingMode.Fill);
}
if (stroke.IsVisible () && thickness > 0) {
this.SetStroke (stroke, thickness);
using (var path = new CGPath ()) {
path.AddRect (convertedRect);
this.gctx.AddPath (path);
}
this.gctx.DrawPath (CGPathDrawingMode.Stroke);
}
}
internal static void Draw(CGContext ctx, object layout, double x, double y)
{
LayoutInfo li = (LayoutInfo)layout;
if (li.Framesetter == null)
return;
CGPath path = new CGPath ();
path.AddRect (new RectangleF (0, 0, li.Width ?? float.MaxValue, li.Height ?? float.MaxValue));
CTFrame frame = li.Framesetter.GetFrame (new NSRange (0, li.Text.Length), path, null);
CTLine ellipsis = null;
bool ellipsize = li.Width.HasValue && li.TextTrimming == TextTrimming.WordElipsis;
if (ellipsize)
ellipsis = new CTLine (CreateAttributedString (li, "..."));
float lineHeight = layoutManager.DefaultLineHeightForFont (li.Font);
ctx.SaveState ();
ctx.TextMatrix = CGAffineTransform.MakeScale (1f, -1f);
ctx.TranslateCTM ((float)x, (float)y + li.Font.Ascender);
foreach (var line in frame.GetLines ()) {
ctx.TextPosition = PointF.Empty;
if (ellipsize) // we need to create a new CTLine here because the framesetter already truncated the text for the line
new CTLine (CreateAttributedString (li, li.Text.Substring (line.StringRange.Location)))
.GetTruncatedLine (li.Width.Value, CTLineTruncation.End, ellipsis).Draw (ctx);
else
line.Draw (ctx);
ctx.TranslateCTM (0, lineHeight);
}
ctx.RestoreState ();
}
static CTFrame CreateFrame(LayoutInfo li)
{
if (string.IsNullOrEmpty (li.Text))
return null;
using (CTFramesetter framesetter = new CTFramesetter (CreateAttributedString (li))) {
CGPath path = new CGPath ();
path.AddRect (new RectangleF (0, 0, li.Width ?? float.MaxValue, li.Height ?? float.MaxValue));
return framesetter.GetFrame (new NSRange (0, li.Text.Length), path, null);
}
}
