/// <summary>
/// 鼠标按下事件
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
protected void OnMouseDown(object sender, MouseEventArgs e)
{
if (_SelectionRow != null || _SelectionItem != null || _DragItem != null)
{
_SelectionRow = null;
_SelectionItem = null;
_DragItem = null;
Invalidate();
}
_IsMouseDown = e.Button == MouseButtons.Left && true;
if (_IsMouseDown)
{
_SelectionRange = Rectangle.Empty;
_SelectionTimeRange = null;
_DragStartLocation = e.Location;
if (IsHoverDateSplitLine(e.Location) && !IsHoverItem(e.Location))
{
_IsAjustSize = true;
}
else if (IsHoverItem(e.Location))
{
_IsDragItem = true;
_DragItem = GetItem(e.Location);
}
}
}
/// <summary>
/// 画项
/// </summary>
/// <param name="graphics"></param>
/// <param name="titleFormat"></param>
/// <param name="item"></param>
/// <param name="range"></param>
protected virtual void DrawItem(Graphics graphics, StringFormat titleFormat, GanttChartViewItem item, RectangleF range)
{
var clip = new RectangleF(range.X, (range.Y < ColumnHeight ? ColumnHeight : range.Y) + 1, range.Width, (range.Y < ColumnHeight ? (range.Height - (ColumnHeight - range.Y)) : range.Height) - 2);
graphics.SetClip(clip);
if (item.Ranges != null && item.Ranges.Any())
{
graphics.FillRectangle(this.Brushes.ItemBackBrush, item.Left - _HScrollBar.Value, item.Top - _VScrollBar.Value, Math.Max(item.Width - 2, 2), ItemHeight);
graphics.DrawRectangle(this.Brushes.ItemBackPen, item.Left - _HScrollBar.Value, item.Top - _VScrollBar.Value, Math.Max(item.Width - 2, 2), ItemHeight);
var subs = item.Ranges.OrderBy(r => r.StartTime);
foreach (var sub in subs)
{
DrawItemTimeRange(graphics, item, sub);
}
}
else
{
graphics.FillRectangle(this.Brushes.ItemSubRangeBackBrush, item.Left - _HScrollBar.Value, item.Top - _VScrollBar.Value, Math.Max(item.Width - 2, 2), ItemHeight);
graphics.DrawRectangle(this.Brushes.ItemSubRangeBackPen, item.Left - _HScrollBar.Value, item.Top - _VScrollBar.Value, Math.Max(item.Width - 2, 2), ItemHeight);
}
if (item == _SelectionItem)
{
var textBrush = item.IsWarnning ? this.Brushes.ItemWarnningTextBrush : this.Brushes.ItemSelectionTextBrush;
graphics.DrawLine(this.Brushes.ItemStartFlagPen, item.Left - _HScrollBar.Value + 1, item.Top - _VScrollBar.Value + ItemHeight / 2, item.Left - _HScrollBar.Value + 1, item.Top - _VScrollBar.Value + ItemHeight);
graphics.DrawRectangle(this.Brushes.ItemSelectionBorderPen, item.Left - _HScrollBar.Value, item.Top - _VScrollBar.Value, Math.Max(item.Width - 2, 2), ItemHeight);
graphics.DrawString(item.Title, ItemTextFont, textBrush, new RectangleF(item.Left - _HScrollBar.Value + 2, item.Top - _VScrollBar.Value + 1, 0, ItemHeight - 2), titleFormat);
}
else if (_SelectionItem != null && SelectionItemSameComparator != null && SelectionItemSameComparator(item, _SelectionItem))
{
var textBrush = item.IsWarnning ? this.Brushes.ItemWarnningTextBrush : this.Brushes.ItemSelectionTextBrush;
graphics.DrawLine(this.Brushes.ItemStartFlagPen, item.Left - _HScrollBar.Value + 1, item.Top - _VScrollBar.Value + ItemHeight / 2, item.Left - _HScrollBar.Value + 1, item.Top - _VScrollBar.Value + ItemHeight);
if (IsShowItemBorder)
{
graphics.DrawRectangle(this.Brushes.ItemBorderPen, item.Left - _HScrollBar.Value, item.Top - _VScrollBar.Value, Math.Max(item.Width - 2, 2), ItemHeight);
}
graphics.DrawString(item.Title, ItemTextFont, textBrush, new RectangleF(item.Left - _HScrollBar.Value + 2, item.Top - _VScrollBar.Value + 1, 0, ItemHeight - 2), titleFormat);
}
else
{
var textBrush = item.IsWarnning ? this.Brushes.ItemWarnningTextBrush : this.Brushes.ItemTextBrush;
graphics.DrawLine(this.Brushes.ItemStartFlagPen, item.Left - _HScrollBar.Value + 1, item.Top - _VScrollBar.Value + ItemHeight / 2, item.Left - _HScrollBar.Value + 1, item.Top - _VScrollBar.Value + ItemHeight);
if (IsShowItemBorder)
{
graphics.DrawRectangle(this.Brushes.ItemBorderPen, item.Left - _HScrollBar.Value, item.Top - _VScrollBar.Value, Math.Max(item.Width - 2, 2), ItemHeight);
}
graphics.DrawString(item.Title, ItemTextFont, textBrush, new RectangleF(item.Left - _HScrollBar.Value + 2, item.Top - _VScrollBar.Value + 1, 0, ItemHeight - 2), titleFormat);
}
graphics.ResetClip();
}
/// <summary>
/// 鼠标双击事件
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
protected void OnMouseDoubleClick(object sender, MouseEventArgs e)
{
if (IsHoverItem(e.Location))
{
_SelectionItem = GetItem(e.Location);
Invalidate();
if (ItemDoubleClick != null)
{
if (_IsShowTooltip)
{
_IsShowTooltip = false;
_ShowTooltipItem = null;
_ShowTooltipPoint = Point.Empty;
}
ItemDoubleClick(this, new GanttChartItemDoubleClickEventArgs(_SelectionItem));
}
}
}
/// <summary>
/// 画项的时间范围
/// </summary>
/// <param name="graphics"></param>
/// <param name="item"></param>
/// <param name="sub"></param>
protected virtual void DrawItemTimeRange(Graphics graphics, GanttChartViewItem item, TimeRange sub)
{
var width = sub.Width;
var right = sub.Left + sub.Width;
if (right == item.Left + item.Width)
{
width = width - 2;
if (width < 1)
{
return;
}
}
if (item == _SelectionItem)
{
graphics.FillRectangle(this.Brushes.ItemSelectionSubRangeBackBrush, sub.Left - _HScrollBar.Value, item.Top - _VScrollBar.Value, width, ItemHeight);
graphics.DrawRectangle(this.Brushes.ItemSelectionSubRangeBackPen, sub.Left - _HScrollBar.Value, item.Top - _VScrollBar.Value, width, ItemHeight);
}
else
{
graphics.FillRectangle(this.Brushes.ItemSubRangeBackBrush, sub.Left - _HScrollBar.Value, item.Top - _VScrollBar.Value, width, ItemHeight);
graphics.DrawRectangle(this.Brushes.ItemSubRangeBackPen, sub.Left - _HScrollBar.Value, item.Top - _VScrollBar.Value, width, ItemHeight);
}
}
/// <summary>
/// 鼠标滚动事件
/// </summary>
/// <param name="e"></param>
protected override void OnMouseWheel(MouseEventArgs e)
{
if (_IsShowTooltip)
{
_IsShowTooltip = false;
_ShowTooltipItem = null;
_ShowTooltipPoint = Point.Empty;
}
//int i = e.Delta > 0 ? -1 : 1;
var scrollbar = _IsShiftPress ? _HScrollBar : (ScrollBar)_VScrollBar;
var h = scrollbar.Value - (int)(e.Delta * MouseWheelSensitivity);
if (h > scrollbar.Maximum)
{
h = scrollbar.Maximum;
}
if (h < scrollbar.Minimum)
{
h = scrollbar.Minimum;
}
scrollbar.Value = h;
Invalidate();
base.OnMouseWheel(e);
}
/// <summary>
/// 初始化
/// </summary>
/// <param name="item"></param>
public GanttChartItemDoubleClickEventArgs(GanttChartViewItem item)
{
Item = item;
}
/// <summary>
/// 鼠标移动事件
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
protected void OnMouseMove(object sender, MouseEventArgs e)
{
if (_IsMouseDown)
{
if (_IsShowTooltip)
{
_IsShowTooltip = false;
_ShowTooltipItem = null;
_ShowTooltipPoint = Point.Empty;
Invalidate();
}
if (_IsDragItem)
{
}
else if (_DragStartLocation.X > RowHeaderWidth && _DragStartLocation.Y > ColumnHeight)
{
//TODO: 画选择框
_DragEndLocation = e.Location;
Invalidate();
}
return;
}
else if (IsHoverDateSplitLine(e.Location) && !IsHoverItem(e.Location))
{
Cursor = Cursors.VSplit;
}
//else if (IsHoverRowHeader(e))
//{
// Cursor = DefaultCursor;
//}
else if (IsHoverItem(e.Location))
{
Cursor = Cursors.Hand;
//TODO:显示Tooltip
if (!_IsShowTooltip || GetItem(e.Location) != _ShowTooltipItem)
{
_IsShowTooltip = true;
_ShowTooltipItem = GetItem(e.Location);
_ShowTooltipPoint = ComputeTooltipLocation(e.Location);
Invalidate();
return;
}
else
{
return;
}
}
else
{
Cursor = DefaultCursor;
}
if (_IsShowTooltip)
{
_IsShowTooltip = false;
_ShowTooltipItem = null;
_ShowTooltipPoint = Point.Empty;
Invalidate();
}
}
