/// <summary>
/// Gets the index at which the positionBase is situated in the parent. This can be used to determine the index the item that gets moved should be inserted.
/// </summary>
/// <param name="parent">The legend item the moving item should be added to.</param>
/// <param name="positionBase">The item that is used to determine the new position of the moving item.</param>
/// <returns>The new position of the moving item.</returns>
public static int InsertIndex(this ILegendItem parent, ILegendItem positionBase)
{
if (parent == null || positionBase == null)
{
return(-1);
}
ILegendItem item = positionBase;
if (item == parent)
{
return(item.LegendItems.Count());
}
while (item != null)
{
var p = item.GetParentItem();
if (p == parent)
{
var items = p.LegendItems.ToList();
return(items.IndexOf(item));
}
item = p;
}
return(-1);
}
/// <summary>
/// Creates a new instance of DrawLegendItemArgs
/// </summary>
/// <param name="g">A Graphics surface to draw on</param>
/// <param name="item">The legend item to draw</param>
/// <param name="clipRectangle">The bounds that drawing should occur within</param>
/// <param name="topLeft">The position of the top left corner where drawing should start.</param>
public DrawLegendItemArgs(Graphics g, ILegendItem item, Rectangle clipRectangle, PointF topLeft)
{
TopLeft = topLeft;
Graphics = g;
Item = item;
ClipRectangle = clipRectangle;
}
private Size SizeItem(int offset, ILegendItem item, Graphics g)
{
if (item == null)
{
return(new Size(0, 0));
}
int width = offset + 30 + (int)g.MeasureString(item.LegendText, Font).Width;
int height = ItemHeight;
if (item.LegendSymbolMode == SymbolMode.Symbol)
{
Size s = item.GetLegendSymbolSize();
if (s.Height > ItemHeight)
{
height = s.Height;
}
}
if (item.IsExpanded)
{
if (item.LegendItems != null)
{
foreach (ILegendItem child in item.LegendItems)
{
Size cs = SizeItem(offset + _indentation, child, g);
height += cs.Height;
if (cs.Width > width)
{
width = cs.Width;
}
}
}
}
return(new Size(width, height));
}
public void SetSymbol(ILegendItem item, ISymbol symbol)
{
if (item == symbol || item == null)
{
return;
}
if (item == _defaultSymbol)
{
if (_defaultSymbol != null)
{
_defaultSymbol.Release();
}
_defaultSymbol = symbol;
}
else
{
foreach (QuantityClass qClass in _quantityClasses)
{
if (qClass != null && qClass.Symbol == item)
{
qClass.Symbol = symbol;
return;
}
}
}
}
/// <summary>
/// Creates a new instance of DrawLegendItemArgs
/// </summary>
/// <param name="g">A Graphics surface to draw on</param>
/// <param name="item">The legend item to draw</param>
/// <param name="clipRectangle">The bounds that drawing should occur within</param>
/// <param name="topLeft">The position of the top left corner where drawing should start.</param>
public DrawLegendItemArgs(Graphics g, ILegendItem item, Rectangle clipRectangle, PointF topLeft)
{
_topLeft = topLeft;
_graphics = g;
_item = item;
_clipRectangle = clipRectangle;
}
/// <summary>
/// Given the starting position, which might not be able to contain the drop item,
/// determine the index in the valid container where this item should end up.
/// </summary>
/// <param name="startItem">The legend item that may not be a sibling or be able to contain the drop item</param>
/// <param name="dropItem">The item being added to the legend</param>
/// <returns>The integer index of the valid container where insertion should occur when dropping onto this item.</returns>
public static int InsertIndex(this ILegendItem startItem, ILegendItem dropItem)
{
ILegendItem container = GetValidContainerFor(startItem, dropItem);
if (container == null)
{
return(-1);
}
ILegendItem insertTarget = GetInsertTarget(startItem, dropItem);
if (insertTarget == null)
{
return(container.LegendItems.Count());
}
if (insertTarget == container)
{
return(container.LegendItems.Count());
}
List <ILegendItem> items = container.LegendItems.ToList();
if (items.Contains(insertTarget))
{
return(items.IndexOf(insertTarget));
}
return(container.LegendItems.Count());
}
/// <summary>
/// This method starts with this legend item and tests to see if it can contain
/// the specified target. As it moves up the
/// </summary>
/// <param name="startItem">This legend item</param>
/// <param name="dropItem">The target legend item to test</param>
/// <returns>An ILegendItem that is one of the parent items of this item, but that can receive the target.</returns>
public static ILegendItem GetValidContainerFor(this ILegendItem startItem, ILegendItem dropItem)
{
if (startItem == null)
{
return(null);
}
if (dropItem == null)
{
return(null);
}
if (startItem.CanReceiveItem(dropItem))
{
return(startItem);
}
ILegendItem item = startItem;
while ((item = item.GetParentItem()) != null)
{
if (item.CanReceiveItem(dropItem))
{
return(item);
}
}
return(null);
}
public void SetSymbol(ILegendItem item, ISymbol symbol)
{
if (item == _symbol && symbol is ITextSymbol)
{
_symbol = symbol as ITextSymbol;
}
}
private static ILegendItem GetInsertTarget(ILegendItem startItem, ILegendItem dropItem)
{
if (startItem == null)
{
return(null);
}
if (dropItem == null)
{
return(null);
}
if (startItem.CanReceiveItem(dropItem))
{
return(startItem);
}
ILegendItem item = startItem;
while (item.GetParentItem() != null)
{
if (item.GetParentItem().CanReceiveItem(dropItem))
{
return(item);
}
item = item.GetParentItem();
}
return(null);
}
/// <summary>
/// Initializes a new instance of the <see cref="DrawLegendItemArgs"/> class.
/// </summary>
/// <param name="g">A Graphics surface to draw on.</param>
/// <param name="item">The legend item to draw.</param>
/// <param name="clipRectangle">The bounds that drawing should occur within.</param>
/// <param name="topLeft">The position of the top left corner where drawing should start.</param>
public DrawLegendItemArgs(Graphics g, ILegendItem item, Rectangle clipRectangle, PointF topLeft)
{
TopLeft = topLeft;
Graphics = g;
Item = item;
ClipRectangle = clipRectangle;
}
private UIElement MakeItem(ILegendItem legendItem, Legend legend, IMapperOwner owner)
{
switch (legendItem.LegendItemKind)
{
case LegendItemKind.Point:
return(MakePointItem(legendItem, legend, owner));
case LegendItemKind.Line:
return(MakeLineItem(legendItem, legend, owner));
case LegendItemKind.KML:
case LegendItemKind.None:
return(null);
case LegendItemKind.ColorSwatch:
return(MakeColorSwatchItem(legendItem, legend, owner));
case LegendItemKind.Text:
return(MakeTextItem(legendItem, legend, owner));
default:
System.Diagnostics.Debug.Assert(false, "unknown legend item type");
return(null);
}
}
public void SetSymbol(ILegendItem item, ISymbol symbol)
{
if (_renderer is ILegendGroup)
{
((ILegendGroup)_renderer).SetSymbol(item, symbol);
}
}
public ILegendItem Create(ILegendSettings legend, object item)
{
if (item == null)
{
throw new ArgumentNullException("item");
}
if (!(item is LabelLayer))
{
throw new ArgumentException("Item is not a label layer", "item");
}
var vl = (LabelLayer)item;
ILegendItem res = null;
if (vl.Theme != null)
{
res = Factory[vl.Theme].Create(legend, vl.Theme) ?? new LegendItem();
res.Label = vl.LayerName + res.Label ?? string.Empty;
}
else
{
res = Factory[vl.Style].Create(legend, vl.Style) ?? new LegendItem();
res.Label = vl.LayerName;
}
res.LabelFont = legend.ItemFont;
res.LabelBrush = legend.ForeColor;
res.Padding = legend.Padding;
res.Exclude = !vl.Enabled;
res.Expanded = res.SubItems.Count > 0;
res.Item = item;
return(res);
}
// Draw the plus or minus visible for controlling expansion
private void DrawPlusMinus(Graphics g, ref PointF topLeft, LegendBox itemBox)
{
ILegendItem item = itemBox.Item;
if (item == null)
{
return;
}
if (item.LegendSymbolMode == SymbolMode.Symbol)
{
return; // don't allow symbols to expand
}
Point tl = new Point((int)topLeft.X, (int)topLeft.Y);
tl.Y += (ItemHeight - 8) / 2;
tl.X += 3;
Rectangle box = new Rectangle(tl.X, tl.Y, 8, 8);
itemBox.ExpandBox = box;
Point center = new Point(tl.X + 4, (int)topLeft.Y + ItemHeight / 2);
g.FillRectangle(Brushes.White, box);
g.DrawRectangle(Pens.Gray, box);
if (item.IsExpanded)
{
g.DrawRectangle(Pens.Gray, box);
}
else if (item.LegendItems != null && item.LegendItems.Any())
{
g.DrawLine(Pens.Black, center.X, center.Y - 2, center.X, center.Y + 2);
}
g.DrawLine(Pens.Black, center.X - 2, center.Y, center.X + 2, center.Y);
topLeft.X += 13;
}
private void DoItemMouseDown(ItemMouseEventArgs e)
{
Point loc = new Point(e.X + ControlRectangle.X, e.Location.Y + ControlRectangle.Top);
// Toggle expansion
if (e.ItemBox.ExpandBox.Contains(loc))
{
e.ItemBox.Item.IsExpanded = !e.ItemBox.Item.IsExpanded;
if (ExpandBoxMouseDown != null)
{
ExpandBoxMouseDown(this, e);
}
ResetLegend();
return;
}
if (e.ItemBox.Item.IsSelected)
{
// if we are already selected, prepare to edit in textbox
_previousMouseDown = e.ItemBox;
// Start dragging
if (e.Button == MouseButtons.Left)
{
_isDragging = true;
ILegendItem li = e.ItemBox.Item;
while (li != null && li as ILayer == null)
{
li = li.GetParentItem();
}
ILayer lyr = li as ILayer;
if (lyr != null)
{
_dragItem = BoxFromItem(lyr);
}
else
{
_isDragging = false;
}
}
}
else
{
// Check for textbox clicking
if (e.ItemBox.Textbox.Contains(loc))
{
if (ModifierKeys != Keys.Shift)
{
ClearSelection();
}
e.ItemBox.Item.IsSelected = true;
//_selection.Add(e.ItemBox);
//IsInitialized = false;
//Invalidate();
//return;
}
}
}
// Draw the checkbox for an item
private void DrawCheckBoxes(Graphics g, ref PointF topLeft, LegendBox itemBox)
{
ILegendItem item = itemBox.Item;
if (item == null)
{
return;
}
if (item.LegendSymbolMode != SymbolMode.Checkbox)
{
return;
}
if (item.Checked)
{
int top = (int)topLeft.Y + (ItemHeight - _icoChecked.Height) / 2;
int left = (int)topLeft.X + 6;
g.DrawIcon(_icoChecked, left, top);
Rectangle box = new Rectangle(left, top, _icoChecked.Width, _icoChecked.Height);
itemBox.CheckBox = box;
}
else
{
int top = (int)topLeft.Y + (ItemHeight - _icoUnchecked.Height) / 2;
int left = (int)topLeft.X + 6;
g.DrawIcon(_icoUnchecked, left, top);
Rectangle box = new Rectangle(left, top, _icoChecked.Width, _icoChecked.Height);
itemBox.CheckBox = box;
}
topLeft.X += 22;
}
/// <summary>
/// Creates a new instance of DrawLegendItemArgs
/// </summary>
/// <param name="g">A Graphics surface to draw on</param>
/// <param name="item">The legend item to draw</param>
/// <param name="clipRectangle">The bounds that drawing should occur within</param>
/// <param name="topLeft">The position of the top left corner where drawing should start.</param>
public DrawLegendItemArgs(Graphics g, ILegendItem item, Rectangle clipRectangle, PointF topLeft)
{
_topLeft = topLeft;
_graphics = g;
_item = item;
_clipRectangle = clipRectangle;
}
private UIElement MakeColorSwatchItem(ILegendItem mapperItem, Legend mapLegend, IMapperOwner owner)
{
System.Diagnostics.Debug.Assert(mapperItem.LegendItemKind == LegendItemKind.ColorSwatch);
double padding;
var tb = MakeItemText(mapperItem, mapLegend, owner, out padding);
padding = 0; // todo: allow override
// graphics:
Path p = new Path();
var stroke = GetStrokeColor(mapLegend, mapperItem);
p.Stroke = Util.BrushFromGdiColor(stroke);
var fill = mapperItem.LegendItemFillColor;
p.Fill = Util.BrushFromGdiColor(fill);
double size = tb.FontSize; // / 3; // a "heuristic" ...
Geometry eg = Util.MarkerShapeToGeometry(MarkerShape.Square, size);
p.Data = eg;
p.VerticalAlignment = System.Windows.VerticalAlignment.Center;
p.HorizontalAlignment = System.Windows.HorizontalAlignment.Center;
p.Margin = new Thickness(size + padding, size + padding, padding, padding);
// combine:
StackPanel sp = new StackPanel();
sp.Orientation = Orientation.Horizontal;
sp.Children.Add(p);
sp.Children.Add(tb);
return(sp);
}
public void SetSymbol(ILegendItem item, ISymbol symbol)
{
if (item == symbol)
{
return;
}
//if (item == _defaultSymbol)
//{
// _defaultSymbol.Release();
// _defaultSymbol = symbol;
//}
//else
{
foreach (string key in _symbolTable.Keys)
{
if (!(_symbolTable[key] is ILegendItem))
{
continue;
}
if (_symbolTable[key] == item)
{
if (symbol is ILegendItem)
{
((ILegendItem)symbol).LegendLabel = item.LegendLabel;
}
_symbolTable[key] = symbol;
return;
}
}
}
}
public void SetSymbol(ILegendItem item, ISymbol symbol)
{
if (item == symbol)
{
return;
}
foreach (string key in _symbolTable.Keys)
{
if (!(_symbolTable[key] is ILegendItem))
{
continue;
}
if (_symbolTable[key] == item)
{
if (symbol is ILegendItem)
{
((ILegendItem)symbol).LegendLabel = item.LegendLabel;
}
_symbolTable[key] = symbol;
return;
}
}
}
private void listLegendLayers_SelectedIndexChanged(object sender, EventArgs e)
{
this.bool_0 = false;
this.ilegendItem_0 =
(this.listLegendLayers.Items[this.listLegendLayers.SelectedIndex] as LegendItemWrap).LegendItem;
if (this.ilegendItem_0 != null)
{
ILegendClassFormat legendClassFormat = this.ilegendItem_0.LegendClassFormat;
if (legendClassFormat.AreaPatch == null)
{
ILegendFormat format = this.ilegend_0.Format;
legendClassFormat.AreaPatch = format.DefaultAreaPatch;
legendClassFormat.LinePatch = format.DefaultLinePatch;
legendClassFormat.PatchWidth = format.DefaultPatchWidth;
legendClassFormat.PatchHeight = format.DefaultPatchHeight;
}
if (this.定制 == null)
{
this.定制 = new ServerStyleGalleryItemClass();
this.定制.Name = "定制";
this.定制.Item = legendClassFormat.LinePatch;
}
if (this.定制_1 == null)
{
this.定制_1 = new ServerStyleGalleryItemClass();
this.定制_1.Name = "定制";
this.定制_1.Item = legendClassFormat.AreaPatch;
}
this.cboLinePatches.SelectStyleGalleryItem(this.定制);
this.cboAreaPatches.SelectStyleGalleryItem(this.定制_1);
this.txtWidth.Text = legendClassFormat.PatchWidth.ToString("#.##");
this.txtHeight.Text = legendClassFormat.PatchHeight.ToString("#.##");
this.bool_0 = true;
}
}
public override void Run()
{
ILegendItem selectedItem = (GIS.FrameWork.Application.App.Legend as GIS.Common.Dialogs.Legend).SelectedLegendMenuItem;
if (selectedItem != null)
{
if (selectedItem != null)
{
if (selectedItem is FeatureLayer)
{
FeatureLayerActions fla = new FeatureLayerActions();
if (fla != null && selectedItem != null)
{
fla.ShowProperties(selectedItem as IFeatureLayer);
}
}
else if (selectedItem is RasterLayer)
{
RasterLayerActions rla = new RasterLayerActions();
if (rla != null && selectedItem != null)
{
rla.ShowProperties(selectedItem as IRasterLayer);
}
}
else if (selectedItem is ImageLayer)
{
ImageLayerActions ila = new ImageLayerActions();
if (ila != null && selectedItem != null)
{
ila.ShowProperties(selectedItem as IImageLayer);
}
}
}
}
}
/// <summary>
/// Tests the specified legend item. If the item is another layer or a group or a map-frame, then this
/// will return false. Furthermore, if the parent of the item is not also this object, then it will
/// also return false. The idea is that layers can have sub-nodes move around, but not transport from
/// place to place.
/// </summary>
/// <param name="item">the legend item to test</param>
/// <returns>Boolean that if true means that it is ok to insert the specified item into this layer.</returns>
public override bool CanReceiveItem(ILegendItem item)
{
if (item.GetParentItem() != this)
{
return(false);
}
ILayer lyr = item as ILayer;
if (lyr != null)
{
return(false);
}
IFrame mf = item as IFrame;
if (mf != null)
{
return(false);
}
IGroup gr = item as IGroup;
if (gr != null)
{
return(false);
}
return(true);
}
private void RendererBox_DrawItem(object sender, DrawItemEventArgs e)
{
if (e.Index >= RendererBox.Items.Count || e.Index < 0)
{
return;
}
object item = RendererBox.Items[e.Index];
if (item is RendererItem)
{
SolidBrush b, f;
if ((e.State & DrawItemState.Selected) != 0)
{
b = (SolidBrush)Brushes.DarkBlue;
f = (SolidBrush)Brushes.White;
}
else
{
b = (SolidBrush)Brushes.White;
f = (SolidBrush)Brushes.Black;
}
using (System.Drawing.Font font = new Font("Arial", 10))
{
e.Graphics.FillRectangle(b, e.Bounds);
Rectangle rect = new Rectangle(e.Bounds.X + 20, e.Bounds.Y, e.Bounds.Width, e.Bounds.Height);
e.Graphics.DrawString(item.ToString(), font, f, rect);
rect = new Rectangle(5, e.Bounds.Y + 2, 11, 11);
e.Graphics.DrawImage(
(((RendererItem)item).ShowLegend ?
global::gView.Win.Carto.Rendering.UI.Properties.Resources.CollapseIcon :
global::gView.Win.Carto.Rendering.UI.Properties.Resources.ExpandIcon),
rect);
}
}
else if (item is LegendItem)
{
Rectangle rect = new Rectangle(20, e.Bounds.Top, 30, 20);
ILegendItem legendItem = ((LegendItem)item).Item;
if (legendItem != null)
{
if (legendItem is ISymbol)
{
e.Graphics.DrawSymbol((ISymbol)legendItem, rect);
}
if (legendItem.LegendLabel != String.Empty)
{
using (Font font = new Font("Arial", 9))
{
e.Graphics.DrawString(legendItem.LegendLabel, font, Brushes.Black, 52, e.Bounds.Top + e.Bounds.Height / 2 - font.Height / 2);
SizeF stringSize = e.Graphics.MeasureString(legendItem.LegendLabel, font);
RendererBox.HorizontalExtent = (int)Math.Max(RendererBox.HorizontalExtent, 52 + stringSize.Width);
}
}
}
}
}
/// <summary>
/// Gets the index of the specified item in this collection if it is a layer.
/// </summary>
/// <param name="item">Item whose index should be returned.</param>
/// <returns>-1 if the item is no ILayer or not found, otherwise the index.</returns>
public int IndexOf(ILegendItem item)
{
if (item is not ILayer layer)
{
return(-1);
}
return(base.IndexOf(layer));
}
public void SetObjects(object @object)
{
m_pOldLegendItem = @object as ILegendItem;
if (m_pOldLegendItem != null)
{
m_pLegendItem = (m_pOldLegendItem as IClone).Clone() as ILegendItem;
}
}
/// <summary>
/// Inserts the specified item into this collection if it is a layer.
/// </summary>
/// <param name="index">Index where the item should be added.</param>
/// <param name="item">Item that should be added.</param>
public void Insert(int index, ILegendItem item)
{
if (item is not ILayer layer)
{
return;
}
base.Insert(index, layer);
}
/// <summary>
/// Handles the special case of not copying the parent during an on copy properties operation.
/// </summary>
/// <param name="source">The source to copy the properties from.</param>
protected override void OnCopyProperties(object source)
{
base.OnCopyProperties(source);
ILegendItem parent = GetParentItem();
IFeatureLayer p = parent as IFeatureLayer;
p?.ApplyScheme(this);
}
/// <summary>
/// Searches through the LegendItems recursively, looking for the 0 index
/// member of the deepest part of the tree.
/// </summary>
/// <param name="self"></param>
/// <returns></returns>
public static ILegendItem BottomMember(this ILegendItem self)
{
if (self.LegendItems != null && self.LegendItems.Count() > 0)
{
return(BottomMember(self.LegendItems.First()));
}
return(self);
}
public FrmLegendStyle(ILegendItem legenditem, ILegend legend, int index)
{
InitializeComponent();
this.EnableGlass = false;
pLegendItem = legenditem;
pLegend = legend;
lineindex = index;
}
private void TabColorDialogChangesApplied(object sender, EventArgs e)
{
_editCategory.LowColor = _tabColorDialog.StartColor;
_editCategory.HighColor = _tabColorDialog.EndColor;
ILegendItem test = _editCategory.GetParentItem();
IRasterLayer rl = test as IRasterLayer;
rl?.WriteBitmap();
}
private void WriteUniversalGeometryRenderer(UniversalGeometryRenderer renderer)
{
for (int i = 0; i < renderer.LegendItemCount; i++)
{
ILegendItem lItem = renderer.LegendItem(i);
WriteSymbol(lItem as ISymbol);
}
}
/// <summary>
/// This method starts with this legend item and tests to see if it can contain
/// the specified target. As it moves up the
/// </summary>
/// <param name="startItem">This legend item</param>
/// <param name="dropItem">The target legend item to test</param>
/// <returns>An ILegendItem that is one of the parent items of this item, but that can receive the target.</returns>
public static ILegendItem GetValidContainerFor(this ILegendItem startItem, ILegendItem dropItem)
{
if (startItem == null) return null;
if (dropItem == null) return null;
if (startItem.CanReceiveItem(dropItem)) return startItem;
ILegendItem item = startItem;
while ((item = item.GetParentItem()) != null)
{
if (item.CanReceiveItem(dropItem))
{
return item;
}
}
return null;
}
private static ILegendItem GetInsertTarget(ILegendItem startItem, ILegendItem dropItem)
{
if (startItem == null) return null;
if (dropItem == null) return null;
if (startItem.CanReceiveItem(dropItem)) return startItem;
ILegendItem item = startItem;
while (item.GetParentItem() != null)
{
if (item.GetParentItem().CanReceiveItem(dropItem))
{
return item;
}
item = item.GetParentItem();
}
return null;
}
/// <summary>
/// Given the starting position, which might not be able to contain the drop item,
/// determine the index in the valid container where this item should end up.
/// </summary>
/// <param name="startItem">The legend item that may not be a sibling or be able to contain the drop item</param>
/// <param name="dropItem">The item being added to the legend</param>
/// <returns>The integer index of the valid container where insertion should occur when dropping onto this item.</returns>
public static int InsertIndex(this ILegendItem startItem, ILegendItem dropItem)
{
ILegendItem container = GetValidContainerFor(startItem, dropItem);
if (container == null) return -1;
ILegendItem insertTarget = GetInsertTarget(startItem, dropItem);
if (insertTarget == null) return container.LegendItems.Count();
if (insertTarget == container)
{
return container.LegendItems.Count();
}
List<ILegendItem> items = container.LegendItems.ToList();
if (items.Contains(insertTarget))
{
return items.IndexOf(insertTarget);
}
return container.LegendItems.Count();
}
/// <summary>
/// This can be used by derivative classes to create a new, empty instance of a ColorRampBuilder
/// where Minimum and Maximum are overridden.
/// </summary>
protected ColorRampBuilder(ILegendItem parent)
{
_parent = parent;
_colorBreaks = new ColorBreakList(parent);
Configure();
}
/// <summary>
/// Sorts out what the parent item is and removes this legend item from that parents collection.
/// </summary>
/// <param name="item"></param>
/// <param name="parent"></param>
private void RemoveItem(ILegendItem item, ILegendItem parent)
{
IGroup grp = parent as IGroup;
if(grp != null)
{
ILayer lyr = item as ILayer;
if(lyr != null) grp.Remove(lyr);
}
}
// Given a legend item, it searches the list of LegendBoxes until it finds it.
private LegendBox BoxFromItem(ILegendItem item)
{
foreach (LegendBox box in _legendBoxes)
{
if (box.Item == item) return box;
}
return null;
}
private Size SizeItem(int offset, ILegendItem item, Graphics g)
{
if (item == null) return new Size(0, 0);
int width = offset + 30 + (int)g.MeasureString(item.LegendText, Font).Width;
int height = ItemHeight;
if(item.LegendSymbolMode == SymbolModes.Symbol)
{
Size s = item.GetLegendSymbolSize();
if (s.Height > ItemHeight) height = s.Height;
}
if (item.IsExpanded)
{
if (item.LegendItems != null)
{
foreach (ILegendItem child in item.LegendItems)
{
Size cs = SizeItem(offset + _indentation, child, g);
height += cs.Height;
if (cs.Width > width) width = cs.Width;
}
}
}
return new Size(width, height);
}
/// <summary>
/// Allows for the set behavior for the parent item to be overridden in child classes
/// </summary>
/// <param name="value"></param>
protected virtual void OnSetParentItem(ILegendItem value)
{
_parentLegendItem = value;
}
/// <summary>
/// As a group, MapFrames can either receive layers or groups, but not
/// sub-members like symbolizers or icons.
/// </summary>
/// <param name="item">The ILegendItem to receive</param>
/// <returns>Boolean that is true if the item can be received</returns>
public override bool CanReceiveItem(ILegendItem item)
{
ILayer lyr = item as ILayer;
if (lyr != null)
{
if(lyr != this) return true; // don't allow groups to add to themselves
}
return false;
}
/// <summary>
/// Occurs when setting the parent item and updates the parent item pointers
/// </summary>
/// <param name="value"></param>
protected override void OnSetParentItem(ILegendItem value)
{
base.OnSetParentItem(value);
_categories.UpdateItemParentPointers();
}
/// <summary>
/// Returns a boolean indicating whether or not this item can have other items dropped on it.
/// By default this is false. This can be overridden for more customized behaviors.
/// </summary>
/// <param name="item">The item to test for dropping.</param>
/// <returns></returns>
public virtual bool CanReceiveItem(ILegendItem item)
{
if (LegendType == LegendType.Scheme)
{
if (item.LegendType == LegendType.Symbol) return true;
return false;
}
if (LegendType == LegendType.Group)
{
if (item.LegendType == LegendType.Symbol) return false;
if (item.LegendType == LegendType.Scheme) return false;
return true;
}
if (LegendType == LegendType.Layer)
{
if (item.LegendType == LegendType.Symbol) return true;
if (item.LegendType == LegendType.Scheme) return true;
return false;
}
if (LegendType == LegendType.Symbol)
{
return false;
}
return false;
}
private void DrawLegendItem(Graphics g, ILegendItem item, SizeF itemSize, ref int col, ref int row, ref int maxCol, ref int maxRow)
{
if (row >= maxRow)
{
row = 0;
col++;
if (col > maxCol)
return;
}
g.TranslateTransform(LocationF.X + (col * itemSize.Width), LocationF.Y + (row * itemSize.Height));
item.PrintLegendItem(g, _font, _color, itemSize);
g.TranslateTransform(-(LocationF.X + (col * itemSize.Width)), -(LocationF.Y + (row * itemSize.Height)));
row++;
}
// Given a legend item, it searches the list of LegendBoxes until it finds it.
private LegendBox BoxFromItem(ILegendItem item)
{
return _legendBoxes.FirstOrDefault(box => box.Item == item);
}
/// <summary>
/// Creates a new instance of ColorRampBuilder
/// </summary>
/// <param name="minimum">The minimum value</param>
/// <param name="maximum">The maximum value</param>
/// <param name="parent">The legend item to use as a parent</param>
public ColorRampBuilder(double minimum, double maximum, ILegendItem parent)
{
_parent = parent;
_colorBreaks = new ColorBreakList(parent);
_minimum = minimum;
_maximum = maximum;
Configure();
}
protected virtual bool CheckExpanded(ILegendItem item)
{
return item.SubItems.Count > 0;
}
/// <summary>
/// Sets teh parent legend item for this item
/// </summary>
/// <param name="value"></param>
public void SetParentItem(ILegendItem value)
{
_parentItem = value;
}
private void UpdateActions(ILegendItem mapLayer)
{
var manager = SharedEventHandlers;
var layer = mapLayer as Layer;
if (layer != null)
{
layer.LayerActions = manager == null ? null : manager.LayerActions;
}
var cc = mapLayer as ColorCategory;
if (cc != null)
{
cc.ColorCategoryActions = manager == null ? null : manager.ColorCategoryActions;
}
var fl = mapLayer as FeatureLayer;
if (fl != null)
{
fl.FeatureLayerActions = manager == null? null : manager.FeatureLayerActions;
}
var il = mapLayer as ImageLayer;
if (il != null)
{
il.ImageLayerActions = manager == null ? null : manager.ImageLayerActions;
}
var rl = mapLayer as RasterLayer;
if (rl != null)
{
rl.RasterLayerActions = manager == null ? null : manager.RasterLayerActions;
}
}
void _Legend_OnLabelHilighted(ILegendItem graph)
{
_HighlightedGraph = null;
if (graph != null)
foreach (DisplayedGraph gr in _Graphs)
if (gr.Hint == graph.Hint)
_HighlightedGraph = gr;
Invalidate();
}
/// <summary>
/// Specifies tht
/// </summary>
/// <param name="item"></param>
/// <returns></returns>
public override bool CanReceiveItem(ILegendItem item)
{
base.CanReceiveItem(item);
return false;
}
void _Legend_OnLabelGrayed(ILegendItem graph, bool grayed)
{
foreach(DisplayedGraph gr in _Graphs)
if (gr.Hint == graph.Hint)
gr.Hidden = grayed;
}
/// <summary>
/// Tests the specified legend item. If the item is another layer or a group or a map-frame, then this
/// will return false. Furthermore, if the parent of the item is not also this object, then it will
/// also return false. The idea is that layers can have sub-nodes move around, but not transport from
/// place to place.
/// </summary>
/// <param name="item">the legend item to test</param>
/// <returns>Boolean that if true means that it is ok to insert the specified item into this layer.</returns>
public override bool CanReceiveItem(ILegendItem item)
{
if (item.GetParentItem() != this) return false;
var lyr = item as ILayer;
if (lyr != null) return false;
return true;
}
/// <summary>
/// Ensures that the parentage gets set properly in the event that
/// this scheme is not appearing in the legend.
/// </summary>
/// <param name="value"></param>
protected override void OnSetParentItem(ILegendItem value)
{
base.OnSetParentItem(value);
if (_appearsInLegend) return;
IEnumerable<IFeatureCategory> categories = GetCategories();
foreach (IFeatureCategory category in categories)
{
category.SetParentItem(value);
}
}
/// <summary>
/// Sets the parent legend item for this category.
/// </summary>
/// <param name="value"></param>
public void SetParentItem(ILegendItem value)
{
OnSetParentItem(value);
}
/// <summary>
/// Instantiates new LegendItem object and binds it to the original chart items.
/// </summary>
/// <param name="originalItem"></param>
public LegendItem(ILegendItem originalItem)
{
OriginalItem = originalItem;
SetBindings();
}
/// <summary>
/// Tests the specified legend item. If the item is another layer or a group or a map-frame, then this
/// will return false. Furthermore, if the parent of the item is not also this object, then it will
/// also return false. The idea is that layers can have sub-nodes move around, but not transport from
/// place to place.
/// </summary>
/// <param name="item">the legend item to test</param>
/// <returns>Boolean that if true means that it is ok to insert the specified item into this layer.</returns>
public override bool CanReceiveItem(ILegendItem item)
{
if (item.GetParentItem() != this) return false;
ILayer lyr = item as ILayer;
if (lyr != null) return false;
IFrame mf = item as IFrame;
if (mf != null) return false;
IGroup gr = item as IGroup;
if (gr != null) return false;
return true;
}
/// <summary>
/// Tests the specified legend item to determine whether or not
/// it can be dropped into the current item.
/// </summary>
/// <param name="item">Any object that implements ILegendItem</param>
/// <returns>Boolean that is true if a drag-drop of the specified item will be allowed.</returns>
public bool CanReceiveItem(ILegendItem item)
{
return false;
}
