public override bool Render(ICanvas canvas, IDisplayObject genericDisplayObject)
{
base.Render(canvas, genericDisplayObject);
Label displayObject = genericDisplayObject as Label;
// We render text using parameters.
Style xstyle = displayObject.Style;
// We get state styles.
Label.LabelStyle style, otherStyle;
float alpha = displayObject.Style.GetStyleState <Label.LabelStyle>(
displayObject.StyleAnimation, out style, out otherStyle);
// We first merge data.
float fontSize, lineSpacing;
TextOptions textOptions; Pen pen; IFill fill;
Font font = FontStyle.Merge(style != null ? style.TextFont : null,
otherStyle != null ? otherStyle.TextFont : null, alpha,
out fontSize, out lineSpacing, out textOptions, out pen, out fill);
IFill selFill;
Pen selPen;
PartialFontStyle.Merge(style != null ? style.SelectedTextFont : null,
otherStyle != null ? otherStyle.SelectedTextFont : null, alpha, out selFill, out selPen);
// We calculate bounding box.
Vector2f leftBottom, rightTop;
displayObject.GetBoundingBox(out leftBottom, out rightTop);
// Render only if we can.
if (font != null)
{
// We prepare.
TextRenderInfo info = font.Prepare(canvas, displayObject.Text,
fontSize, textOptions, lineSpacing, leftBottom, rightTop - leftBottom);
// We set new text information.
displayObject.SetTextInfo(info);
Vector2i selection = displayObject.TextSelectedRange;
// We first draw background.
if (selection.Y >= selection.X)
{
Vector2f minSel, maxSel;
info.GetBoundingRect(selection, out minSel, out maxSel);
// We enlarge for better look.
float enlarge = (maxSel.Y - minSel.Y) * (lineSpacing - 1.0f);
minSel.Y -= enlarge / 1.5f;
maxSel.Y += enlarge / 1.5f;
ITransform btransform;
IMapper bmapper;
IFill bfill = BackgroundStyle.Merge(style != null ? style.SelectionBackground : null,
otherStyle != null ? otherStyle.SelectionBackground : null, alpha,
out btransform, out bmapper);
if (bfill != null)
{
if (btransform != null)
{
canvas.TextureTransform = btransform;
}
canvas.FillShape(bfill, new Rectf(minSel, maxSel), bmapper);
if (btransform != null)
{
canvas.TextureTransform = null;
}
}
}
// We draw other text.
if (fill != null)
{
info.Render(fill, new Vector2i(0, selection.X - 1));
info.Render(fill, new Vector2i(selection.Y + 1, (int)info.GlyphCount - 1));
}
else if (pen != null)
{
info.Render(pen, new Vector2i(0, selection.X - 1));
info.Render(pen, new Vector2i(selection.Y + 1, (int)info.GlyphCount - 1));
}
// We draw selected text.
if (selFill != null)
{
info.Render(selFill, selection);
}
else if (selPen != null)
{
info.Render(selPen, selection);
}
displayObject.SetTextInfo(info);
}
return(true);
}