private void onContentShouldBeScrolled(object sender, ContentShouldBeScrolledEventArgs args)
{
if (args.MostLeftVisibleX.HasValue)
{
if (this.deltaX <= args.MostLeftVisibleX.Value &&
this.deltaX + getEffectiveWidth() > args.MostLeftVisibleX.Value)
{
// This X coord is already visible - do nothing
}
else
{
this.deltaX = Math.Min(args.MostLeftVisibleX.Value,
Content.RenderSize.Width - getEffectiveWidth());
}
}
else if (args.MostRightVisibleX.HasValue)
{
if (this.deltaX <= args.MostRightVisibleX.Value &&
this.deltaX + getEffectiveWidth() > args.MostRightVisibleX.Value)
{
// This X coord is already visible - do nothing
}
else
{
this.deltaX = Math.Max(args.MostRightVisibleX.Value - getEffectiveWidth() + 1,
0);
}
}
if (args.MostTopVisibleY.HasValue)
{
if (this.deltaY <= args.MostTopVisibleY.Value &&
this.deltaY + getEffectiveHeight() > args.MostTopVisibleY.Value)
{
// This Y coord is already visible - do nothing
}
else
{
this.deltaY = Math.Min(args.MostTopVisibleY.Value,
Content.RenderSize.Height - getEffectiveHeight());
}
}
else if (args.MostBottomVisibleY.HasValue)
{
if (this.deltaY <= args.MostBottomVisibleY.Value &&
this.deltaY + getEffectiveHeight() > args.MostBottomVisibleY.Value)
{
// This Y coord is already visible - do nothing
}
else
{
this.deltaY = Math.Max(args.MostBottomVisibleY.Value - getEffectiveHeight() + 1,
0);
}
}
this.Invalidate( );
}
private void onContentShouldBeScrolled( object sender, ContentShouldBeScrolledEventArgs args ) {
if ( args.MostLeftVisibleX.HasValue ) {
if ( this.deltaX <= args.MostLeftVisibleX.Value &&
this.deltaX + getEffectiveWidth() > args.MostLeftVisibleX.Value ) {
// This X coord is already visible - do nothing
} else {
this.deltaX = Math.Min( args.MostLeftVisibleX.Value,
Content.RenderSize.Width - getEffectiveWidth());
}
} else if ( args.MostRightVisibleX.HasValue ) {
if (this.deltaX <= args.MostRightVisibleX.Value &&
this.deltaX + getEffectiveWidth() > args.MostRightVisibleX.Value ) {
// This X coord is already visible - do nothing
} else {
this.deltaX = Math.Max(args.MostRightVisibleX.Value - getEffectiveWidth() + 1,
0 );
}
}
if ( args.MostTopVisibleY.HasValue ) {
if (this.deltaY <= args.MostTopVisibleY.Value &&
this.deltaY + getEffectiveHeight() > args.MostTopVisibleY.Value ) {
// This Y coord is already visible - do nothing
} else {
this.deltaY = Math.Min(args.MostTopVisibleY.Value,
Content.RenderSize.Height - getEffectiveHeight());
}
} else if ( args.MostBottomVisibleY.HasValue ) {
if (this.deltaY <= args.MostBottomVisibleY.Value &&
this.deltaY + getEffectiveHeight() > args.MostBottomVisibleY.Value ) {
// This Y coord is already visible - do nothing
} else {
this.deltaY = Math.Max(args.MostBottomVisibleY.Value - getEffectiveHeight() + 1,
0 );
}
}
this.Invalidate( );
}
