/// <summary>
/// Handles the touch move event.
/// </summary>
/// <param name="e">Touch event arguments.</param>
/// <returns>Touch event arguments.</returns>
//protected override void OnTouchMove(TouchEventArgs e)
//{
// /*
// var x = e.Touches[0].X;
// var y = e.Touches[0].Y;
// // The pressed state only triggers when touches occur within this UI element's boundaries.
// // This check guarantees whether we need to process move events or not.
// if (!_pressed)
// return;
// if (!_moving)
// {
// if (_ignoredTouchMoves < _maxIgnoredTouchMoves)
// _ignoredTouchMoves++;
// else
// _moving = true;
// }
// else
// {
// int dragDistance = y - _lastPressY;
// _listY = _lastListY - dragDistance;
// _listY = GlideUtils.Math.MinMax(_listY, 0, _listMaxY);
// //Graphics.DrawImage(X, Y, _bitmap.GetBitmap(), 0, _listY, Width, Height);
// //Glide.Flush(this);
// }
// */
// //e.StopPropagation();
// //return e;
// var evt = new RoutedEvent("TouchMoveEvent", RoutingStrategy.Bubble, typeof(RoutedEventHandler));
// var args = new RoutedEventArgs(evt, this);
// //this.Click?.Invoke(this, args);
// e.Handled = args.Handled;
// //this.isPressed = false;
// if (this.Parent != null)
// this.Invalidate();
//}
/// <summary>
/// Disposes all disposable objects in this object.
/// </summary>
public void Dispose()
{
if (_bitmap != null)
{
_bitmap.Dispose();
_bitmap = null;
}
}
/// <summary>
/// Disposes all disposable objects in this object.
/// </summary>
public void Dispose()
{
if (_headers != null)
{
_headers.Dispose();
}
if (_items != null)
{
_items.Dispose();
}
_DataGridIcon_Asc.Dispose();
_DataGridIcon_Desc.Dispose();
}
/// <summary>
/// Renders the DataGrid onto it's parent container's graphics.
/// </summary>
public override void OnRender(DrawingContext dc)
{
if (ShowHeaders && _renderHeaders)
{
_renderHeaders = false;
RenderHeaders();
}
if (_renderItems)
{
_renderItems = false;
// Only recreate the items Bitmap if necessary
if (_items == null || _items.GetBitmap().Height != _rows.Count * RowHeight)
{
if (_items != null)
{
_items.Dispose();
}
if (_rows.Count < _rowCount)
{
_items = new GlideGraphics(Width, _rowCount * RowHeight);
RenderEmpty();
}
else
{
_items = new GlideGraphics(Width, _rows.Count * RowHeight);
}
}
else
{
_items.DrawRectangle(Glide.Ext.Colors.Black, 1, 0, 0, Width, _items.GetBitmap().Height, 0, 0, Glide.Ext.Colors.Transparent, 0, 0, Glide.Ext.Colors.Transparent, 0, 0, 255);
}
if (_rows.Count > 0)
{
for (int i = 0; i < _rows.Count; i++)
{
UpdateItem(i, false);
}
}
}
int x = /*this.Parent._finalX +*/ X;
int y = /*this.Parent._finalY +*/ Y;
if (_showHeaders)
{
//BitmapImage.FromGraphics(System.Drawing.Graphics.FromImage(x))
dc.DrawImage(BitmapImage.FromGraphics(System.Drawing.Graphics.FromImage(_headers.GetBitmap())), x, y, 0, 0, Width, RowHeight);
y += RowHeight;
}
dc.DrawImage(BitmapImage.FromGraphics(System.Drawing.Graphics.FromImage(_items.GetBitmap())), x, y, 0, _listY, Width, _rowCount * RowHeight);
if (ShowScrollbar)
{
_scrollbarHeight = RowHeight;
int travel = Height - _scrollbarHeight;
if (_rows.Count > 0)
{
_scrollbarTick = (int)System.Math.Round((double)(travel / _rows.Count));
}
else
{
_scrollbarTick = 0;
}
_scrollbarHeight = Height - ((_rows.Count - _rowCount) * _scrollbarTick);
x += Width - ScrollbarWidth;
y = /*parent y*/ 0 + Y;
//dc.DrawRectangle(Glide.Ext.Colors.Black, 0, x, y, ScrollbarWidth, Height, 0, 0, ScrollbarBackColor, 0, 0, Glide.Ext.Colors.Black, 0, 0, 255);
var pen = new Media.Pen(Media.Colors.Black, 0);
dc.DrawRectangle(new SolidColorBrush(Media.Colors.Black), pen, x, y, ScrollbarWidth, Height);
// Only show the scrollbar scrubber if it's smaller than the Height
if (_scrollbarHeight < Height)
{
//dc.DrawRectangle(Glide.Ext.Colors.Black, 0, x, y + (_scrollIndex * _scrollbarTick), ScrollbarWidth, _scrollbarHeight, 0, 0, ScrollbarScrubberColor, 0, 0, Glide.Ext.Colors.Black, 0, 0, 255);
pen = new Media.Pen(Media.Colors.Black, 0);
dc.DrawRectangle(new SolidColorBrush(Media.Colors.Black), pen, x, y + (_scrollIndex * _scrollbarTick), ScrollbarWidth, _scrollbarHeight);
}
}
}