public void ResetViewport()
{
Document.HasLoadedHtml = false;
Document.HasRendered = false;
Size = default(LiteHtmlSize);
ScrollOffset = default(LiteHtmlPoint);
_desiredSize = default(LiteHtmlSize);
_desiredScrollOffset = default(LiteHtmlPoint);
_hasCustomViewport = false;
}
// custom viewport is used for offsetting/scrolling the canvas on this view
public bool SetViewport(LiteHtmlPoint scrollOffset, LiteHtmlSize size)
{
_hasCustomViewport = true;
_desiredScrollOffset = scrollOffset;
_desiredSize = size;
if (!Document.HasLoadedHtml)
{
return(false);
}
return(CheckViewportChange());
}
// If true then a redraw is needed
public bool CheckViewportChange(bool forceRender = false)
{
if (forceRender ||
(int)Size.Width != (int)_desiredSize.Width ||
(int)Size.Height != (int)_desiredSize.Height)
{
Size = _desiredSize;
ScrollOffset = _desiredScrollOffset;
Document.OnMediaChanged();
Render();
return(true);
}
if ((int)ScrollOffset.Y != (int)_desiredScrollOffset.Y || (int)ScrollOffset.X != (int)_desiredScrollOffset.X)
{
ScrollOffset = _desiredScrollOffset;
return(true);
}
return(false);
}