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Reflow library on bounds changed

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This commit is contained in:
John Lewin 2017-08-22 18:17:34 -07:00
parent 9aebf8be03
commit 1e8d451dc4
1 changed files with 53 additions and 16 deletions
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69
Library/Widgets/ListView/IconListView.cs
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@ -28,6 +28,8 @@ either expressed or implied, of the FreeBSD Project.
*/
using System;
using System.Collections.Generic;
using System.Linq;
using MatterHackers.Agg;
using MatterHackers.Agg.UI;
using MatterHackers.MatterControl.Library;
@ -44,7 +46,9 @@ namespace MatterHackers.MatterControl.CustomWidgets
private int cellIndex = 0;
private int columnCount = 1;
private int itemRightMargin;
private int leftRightMargin;
private List<IconViewItem> allIconViews = new List<IconViewItem>();
public IconListView()
: base(FlowDirection.TopToBottom)
@ -56,42 +60,75 @@ namespace MatterHackers.MatterControl.CustomWidgets
int padding = 4;
int itemWidth = ThumbWidth + (padding * 2);
columnCount = (int)Math.Floor(this.LocalBounds.Width / itemWidth);
int newColumnCount = (int)Math.Floor(this.LocalBounds.Width / itemWidth);
int remainingSpace = (int)this.LocalBounds.Width - columnCount * itemWidth;
int remainingSpace = (int) this.LocalBounds.Width - columnCount * itemWidth;
leftRightMargin = (columnCount <= 0) ? 0 : remainingSpace / (columnCount * 2);
itemRightMargin = (columnCount <= 0) ? 0 : remainingSpace / (columnCount + 1);
if (newColumnCount != columnCount)
{
columnCount = newColumnCount;
this.HeavyReflowChildren();
}
else
{
foreach (var iconView in allIconViews)
{
iconView.Margin = new BorderDouble(leftRightMargin, 0);
}
}
this.Padding = new BorderDouble(0, itemRightMargin);
this.Padding = new BorderDouble(0);
base.OnBoundsChanged(e);
}
private void HeavyReflowChildren()
{
foreach(var iconView in allIconViews)
{
iconView.Parent.RemoveChild(iconView);
iconView.Margin = new BorderDouble(leftRightMargin, 0);
}
this.CloseAllChildren();
foreach(var iconView in allIconViews)
{
iconView.ClearRemovedFlag();
AddColumnAndChild(iconView);
}
}
public void AddItem(ListViewItem item)
{
var iconView = new IconViewItem(item, this.ThumbWidth, this.ThumbHeight);
iconView.Margin = new BorderDouble(0, 0, itemRightMargin, 0);
iconView.Margin = new BorderDouble(leftRightMargin, 0);
item.ViewWidget = iconView;
allIconViews.Add(iconView);
AddColumnAndChild(iconView);
}
private void AddColumnAndChild(IconViewItem iconView)
{
if (rowButtonContainer == null)
{
rowButtonContainer = new FlowLayoutWidget(FlowDirection.LeftToRight)
{
HAnchor = HAnchor.Stretch,
Padding = new BorderDouble(itemRightMargin, 0, 0, 0)
Padding = 0
};
rowButtonContainer.AddChild(iconView);
this.AddChild(rowButtonContainer);
cellIndex = 1;
}
else
{
rowButtonContainer.AddChild(iconView);
if (cellIndex++ >= columnCount - 1)
{
rowButtonContainer = null;
}
rowButtonContainer.AddChild(iconView);
if (cellIndex++ >= columnCount - 1)
{
rowButtonContainer = null;
cellIndex = 0;
}
}