public void SetImage(Image image)
{
_image = MyPicture.create(image, Bounds);
_nextImage = null;
_transitionTimer.Enabled = _image.StartAnimate();
Invalidate();
}
public void TransitionImage(Image image, float transitionTime)
{
_nextImage = MyPicture.create(image, Bounds);
_stopwatch = Stopwatch.StartNew();
_transitionTimer.Enabled = true;
this._transitionTime = transitionTime;
Invalidate();
}
protected override void OnPaint(PaintEventArgs pe)
{
Graphics graphic = pe.Graphics;
if (_nextImage != null)
{
var elapsedMilliseconds = _stopwatch.ElapsedMilliseconds;
if (elapsedMilliseconds > _transitionTime)
{
_image = _nextImage;
_nextImage = null;
_transitionTimer.Enabled = _image.StartAnimate();
graphic.DrawImageUnscaled(_image.GetRenderedImage(), 0, 0);
}
else
{
graphic.DrawImageUnscaled(_image.GetRenderedImage(), 0, 0);
var imageAttributes = new ImageAttributes();
imageAttributes.SetColorMatrix(new ColorMatrix {
Matrix33 = elapsedMilliseconds / _transitionTime
});
var renderedImage = _nextImage.GetRenderedImage();
var bounds = new Rectangle(0, 0, renderedImage.Width, renderedImage.Height);
graphic.DrawImage(renderedImage, bounds, 0, 0, bounds.Width, bounds.Height, GraphicsUnit.Pixel,
imageAttributes);
}
}
else
{
graphic.DrawImageUnscaled(_image.GetRenderedImage(), 0, 0);
}
graphic.TextRenderingHint = TextRenderingHint.ClearTypeGridFit;
if (LowerLeftText != null)
{
DrawText(graphic, LowerLeftText, StringFormat.GenericDefault,
rect => new PointF(rect.X, Bounds.Height - rect.Height));
}
if (LowerMiddleText != null)
{
var stringFormat = new StringFormat(StringFormat.GenericDefault);
stringFormat.LineAlignment = StringAlignment.Center;
DrawText(graphic, LowerMiddleText, stringFormat,
rect => new PointF((Bounds.Width - rect.Width) / 2, Bounds.Height - rect.Height));
}
if (LowerRightText != null)
{
var stringFormat = new StringFormat(StringFormat.GenericDefault);
stringFormat.LineAlignment = StringAlignment.Far;
DrawText(graphic, LowerRightText, stringFormat,
rect => new PointF((Bounds.Width - rect.Width), Bounds.Height - rect.Height));
}
}
