public override int GetListItemIndexByScreenPosition(UIList control, Vector2 position)
{
var renderer = control.ParentContainer.Viewport.CanvasRenderer;
if (renderer != null)
{
var rect = control.GetScreenRectangle();
var rect2 = rect;
rect2.Expand(-control.GetScreenOffsetByValue(new UIMeasureValueVector2(UIMeasure.Units, 2, 2)));
var font = control.Font.Value;
if (font == null)
{
font = renderer.DefaultFont;
}
var fontSize = control.GetFontSizeScreen();
var itemSize = GetListItemSizeScreen(control, renderer);
var totalItemsHeight = itemSize * control.Items.Count;
var scrollBar = control.GetScrollBar();
//items
if (control.Items.Count != 0 && rect2.Contains(position))
{
var positionY = rect2.Top;
if (scrollBar != null && scrollBar.VisibleInHierarchy && scrollBar.EnabledInHierarchy)
{
positionY -= scrollBar.Value;
}
for (int n = 0; n < control.Items.Count; n++)
{
var item = control.Items[n];
var itemRectangle = new Rectangle(rect2.Left, positionY, rect2.Right, positionY + itemSize);
if (scrollBar != null && scrollBar.EnabledInHierarchy && scrollBar.VisibleInHierarchy)
{
itemRectangle.Right -= scrollBar.GetScreenSize().X;
}
if (itemRectangle.Intersects(rect2) && itemRectangle.Contains(position))
{
return(n);
}
positionY += itemSize;
}
}
}
return(-1);
}
private void List_SelectedIndexChanged(UIList sender)
{
if (disableListSelectedIndexChangedEvent)
{
return;
}
SelectedIndex = sender.SelectedIndex;
if (remainingTimeToClose == 0)
{
remainingTimeToClose = 0.2;
}
//sender.Visible = false;
}
/////////////////////////////////////////
//!!!!тут? так?
double GetListItemSizeScreen(UIList control, CanvasRenderer renderer)
{
//var font = control.Font.Value;
//if( font == null )
// font = renderer.DefaultFont;
//var fontSize = control.GetFontSizeScreen();
var itemSize = control.ConvertOffsetY(control.ItemSize.Value, UIMeasure.Screen);
//snap by pixel size
if (renderer.IsScreen)
{
itemSize *= (double)renderer.ViewportForScreenCanvasRenderer.SizeInPixels.Y;
itemSize = Math.Ceiling(itemSize);
itemSize /= (double)renderer.ViewportForScreenCanvasRenderer.SizeInPixels.Y;
}
return(itemSize);
}
public override void ListEnsureVisible(UIList control, int index)
{
listEnsureVisible = index;
}
protected virtual void OnRenderList(UIList control, CanvasRenderer renderer)
{
var rect = control.GetScreenRectangle();
renderer.AddQuad(rect, new ColorValue(0, 0, 0));
//renderer.AddQuad( rect, new ColorValue( 0.2, 0.2, 0.2 ) );
var rect2 = rect;
rect2.Expand(-control.GetScreenOffsetByValue(new UIMeasureValueVector2(UIMeasure.Units, 2, 2)));
//border
var color = new ColorValue(0.75, 0.75, 0.75);
renderer.AddQuad(new Rectangle(rect.Left, rect.Top, rect2.Left, rect.Bottom), color);
renderer.AddQuad(new Rectangle(rect2.Left, rect.Top, rect2.Right, rect2.Top), color);
renderer.AddQuad(new Rectangle(rect2.Right, rect.Top, rect.Right, rect.Bottom), color);
renderer.AddQuad(new Rectangle(rect.Left, rect2.Bottom, rect2.Right, rect.Bottom), color);
var font = control.Font.Value;
if (font == null)
{
font = renderer.DefaultFont;
}
var fontSize = control.GetFontSizeScreen();
var itemSize = GetListItemSizeScreen(control, renderer);
var totalItemsHeight = itemSize * control.Items.Count;
var scrollBar = control.GetScrollBar();
//!!!!тут?
//update scroll bar properties
if (scrollBar != null)
{
double screenSizeY = rect2.Size.Y;
double scrollScreenSizeY = totalItemsHeight - screenSizeY;
scrollBar.Visible = control.AlwaysShowScrollBar || totalItemsHeight > screenSizeY;
if (scrollBar.Visible)
{
scrollBar.ValueRange = new Range(0, scrollScreenSizeY);
}
//ensure visible
if (listEnsureVisible != -1)
{
if ((float)listEnsureVisible * itemSize > screenSizeY / 2)
{
var factor = (float)listEnsureVisible / (float)(control.Items.Count - 1);
var v = scrollScreenSizeY * factor;
scrollBar.Value = MathEx.Clamp(v, 0, scrollBar.ValueRange.Value.Maximum);
}
else
{
scrollBar.Value = 0;
}
listEnsureVisible = -1;
}
//if( scrollBar.Visible )
//{
// if( scrollScreenSizeY > 0 )
// {
// double currentScrollScreenPosY = scrollBar.Value * scrollScreenSizeY;
// double itemScrollScreenPosY = itemSize * (double)control.SelectedIndex;
// Range itemScrollScreenRangeY = new Range( itemScrollScreenPosY, itemScrollScreenPosY + itemSize );
// if( itemScrollScreenRangeY.Minimum < currentScrollScreenPosY )
// {
// currentScrollScreenPosY = itemScrollScreenRangeY.Minimum;
// }
// else
// {
// if( itemScrollScreenRangeY.Maximum > currentScrollScreenPosY + screenSizeY )
// currentScrollScreenPosY = itemScrollScreenRangeY.Maximum + itemSize - screenSizeY;
// }
// scrollBar.Value = currentScrollScreenPosY / scrollScreenSizeY;
// }
// else
// scrollBar.Value = 0;
//}
//else
// scrollBar.Value = 0;
}
//items
if (control.Items.Count != 0)
{
renderer.PushClipRectangle(rect2);
var positionY = rect2.Top;
if (scrollBar != null && scrollBar.VisibleInHierarchy && scrollBar.EnabledInHierarchy)
{
positionY -= scrollBar.Value;
}
for (int n = 0; n < control.Items.Count; n++)
{
var item = control.Items[n];
var itemRectangle = new Rectangle(rect2.Left, positionY, rect2.Right, positionY + itemSize);
if (scrollBar != null && scrollBar.EnabledInHierarchy && scrollBar.VisibleInHierarchy)
{
itemRectangle.Right -= scrollBar.GetScreenSize().X;
}
if (itemRectangle.Intersects(rect2))
{
renderer.PushClipRectangle(itemRectangle);
if (n == control.SelectedIndex)
{
var color2 = control.ReadOnlyInHierarchy ? new ColorValue(0.5, 0.5, 0.5) : new ColorValue(0, 0, 0.8);
renderer.AddQuad(itemRectangle, color2);
}
var positionX = rect2.Left + control.GetScreenOffsetByValue(new UIMeasureValueVector2(UIMeasure.Units, 2, 0)).X;
renderer.AddText(font, fontSize, item, new Vector2(positionX, itemRectangle.GetCenter().Y), EHorizontalAlignment.Left, EVerticalAlignment.Center, new ColorValue(1, 1, 1));
renderer.PopClipRectangle();
}
positionY += itemSize;
}
renderer.PopClipRectangle();
}
}
public virtual void ListEnsureVisible(UIList control, int index)
{
}
////////////////
public virtual int GetListItemIndexByScreenPosition(UIList control, Vector2 position)
{
return(-1);
}