private void SetupFlyinAnim()
{
flyinAnim = new Animator()
{
OnCompleted = () =>
{
currentIndex = newIndex;
drawPrev = imgs.Count > 0 && currentIndex > 0;
drawNext = currentIndex < imgs.Count - 1;
opacityBrush.Color = Color.FromArgb(0, Color.Black);
RecalcImageRect();
}
};
flyinAnim.Add(new Step
{
Interval = 20, // ms
TotalStep = step,
AnimAction = (stepI) =>
{
// current
currentImgRect = currentImgRect.AdjustXF(direction * vCurrentHor);
opacityBrush.Color = Color.FromArgb(255 - stepI * opacityStep, Color.Black);
// next
newImgRect = newImgRect.AdjustSizeFromCenter(vNewHor, vNewVer);
Invalidate();
}
});
}
private void FlyIn()
{
if (currentIndex > -1)
{
currentImgRect = ImageDisplayModeHelper.GetImageRect(
this.ClientRectangle,
new Rectangle(Point.Empty, imgs[currentIndex].Size),
DisplayMode.ScaleLossLessCenter);
direction = -1;
s = (int)(0.5 * (this.Width + currentImgRect.Width));
vCurrentHor = s / step + ((s % step == 0) ? 0 : 1);
}
//
newImgRect = ImageDisplayModeHelper.GetImageRect(
this.ClientRectangle,
new Rectangle(Point.Empty, imgs[newIndex].Size),
DisplayMode.ScaleLossLessCenter);
int offsetSizeHor = 40;
int offsetSizeVer = (int)(offsetSizeHor * 1f * newImgRect.Height / newImgRect.Width);
vNewHor = 1f * offsetSizeHor / step;
vNewVer = 1f * offsetSizeVer / step;
newImgRect = newImgRect.AdjustSizeFromCenter(-offsetSizeHor, -offsetSizeVer);
flyinAnim.Start();
}