public void DrawMarkers(IEnumerable<Land> landPieces)
{
if (landPieces == null) return;
ClearGraphics();
if (Current.Instance.MapControl.Viewport.Resolution > 50)
{
return;
}
foreach (var land in landPieces.Where(x => x.DemandAuthorities))
{
var sphericalMid = SphericalMercator.FromLonLat(land.Longitude, land.Latitude);
var feature = new Feature
{
Geometry = new Mapsui.Geometries.Point(sphericalMid.x, sphericalMid.y),
};
var offset = new Offset();
offset.X = 100;
double scale = 19.109256744384766 / Current.Instance.MapControl.Viewport.Resolution;
//var symbolStyle = new SymbolStyle { Symbol = GetSymbol("demandar.png"), SymbolType = SymbolType.Rectangle, SymbolOffset = offset, SymbolScale = scale };
var symbolStyle = new SymbolStyle { Symbol = GetSymbol("demandar.png"), SymbolScale = 1 };
feature.Styles.Add(symbolStyle);
source.Features.Add(feature);
}
Current.Instance.MapControl.OnViewChanged(true);
}
/// <summary>
/// Renders a label to the map.
/// </summary>
/// <param name="graphics">Graphics reference</param>
/// <param name="labelPoint">Label placement</param>
/// <param name="offset">Offset of label in screen coordinates</param>
/// <param name="font">Font used for rendering</param>
/// <param name="forecolor">Font forecolor</param>
/// <param name="backcolor">Background color</param>
/// <param name="halo">Color of halo</param>
/// <param name="rotation">Text rotation in degrees</param>
/// <param name="text">Text to render</param>
/// <param name="viewport"></param>
public static void DrawLabel(Graphics graphics, Point labelPoint, Offset offset, Styles.Font font, Styles.Color forecolor, Styles.Brush backcolor, Styles.Pen halo, double rotation, string text, IViewport viewport, StyleContext context)
{
SizeF fontSize = graphics.MeasureString(text, font.ToGdi(context)); //Calculate the size of the text
labelPoint.X += offset.X; labelPoint.Y += offset.Y; //add label offset
if (Math.Abs(rotation) > Constants.Epsilon && !double.IsNaN(rotation))
{
graphics.TranslateTransform((float)labelPoint.X, (float)labelPoint.Y);
graphics.RotateTransform((float)rotation);
graphics.TranslateTransform(-fontSize.Width / 2, -fontSize.Height / 2);
if (backcolor != null && backcolor.ToGdi(context) != Brushes.Transparent)
graphics.FillRectangle(backcolor.ToGdi(context), 0, 0, fontSize.Width * 0.74f + 1f, fontSize.Height * 0.74f);
var path = new GraphicsPath();
path.AddString(text, new FontFamily(font.FontFamily), (int)font.ToGdi(context).Style, font.ToGdi(context).Size, new System.Drawing.Point(0, 0), null);
if (halo != null)
graphics.DrawPath(halo.ToGdi(context), path);
graphics.FillPath(new SolidBrush(forecolor.ToGdi()), path);
//g.DrawString(text, font, new System.Drawing.SolidBrush(forecolor), 0, 0);
}
else
{
if (backcolor != null && backcolor.ToGdi(context) != Brushes.Transparent)
graphics.FillRectangle(backcolor.ToGdi(context), (float)labelPoint.X, (float)labelPoint.Y, fontSize.Width * 0.74f + 1, fontSize.Height * 0.74f);
var path = new GraphicsPath();
//Arial hack
path.AddString(text, new FontFamily("Arial"), (int)font.ToGdi(context).Style, (float)font.Size, new System.Drawing.Point((int)labelPoint.X, (int)labelPoint.Y), null);
if (halo != null)
graphics.DrawPath(halo.ToGdi(context), path);
graphics.FillPath(new SolidBrush(forecolor.ToGdi()), path);
//g.DrawString(text, font, new System.Drawing.SolidBrush(forecolor), LabelPoint.X, LabelPoint.Y);
}
}
public SymbolStyle()
{
SymbolOffset = new Offset();
SymbolScale = 1f;
Opacity = 1f;
BitmapId = -1;
}
public SymbolStyle()
{
SymbolOffset = new Offset();
SymbolScale = 1f;
Opacity = 1f;
BitmapId = -1;
Width = DefaultWidth;
Height = DefaultHeight;
}
public LabelStyle()
{
Font = new Font { FontFamily = "Verdana", Size = 12 };
Offset = new Offset { X = 0, Y = 0 };
CollisionDetection = false;
ForeColor = Color.Black;
BackColor = new Brush { Color = Color.White };
HorizontalAlignment = HorizontalAlignmentEnum.Center;
VerticalAlignment = VerticalAlignmentEnum.Center;
}
public LabelStyle(LabelStyle labelStyle)
{
Font = new Font(labelStyle.Font);
Offset = new Offset(labelStyle.Offset);
CollisionDetection = false;
CollisionBuffer = new Size(labelStyle.CollisionBuffer);
ForeColor = new Color(labelStyle.ForeColor);
BackColor = new Brush(labelStyle.BackColor);
HorizontalAlignment = HorizontalAlignmentEnum.Center;
VerticalAlignment = VerticalAlignmentEnum.Center;
}
public LabelStyle(LabelStyle labelStyle)
{
Font = new Font(labelStyle.Font);
Offset = new Offset(labelStyle.Offset);
CollisionDetection = false;
ForeColor = new Color(labelStyle.ForeColor);
BackColor = new Brush(labelStyle.BackColor);
HorizontalAlignment = HorizontalAlignmentEnum.Center;
VerticalAlignment = VerticalAlignmentEnum.Center;
Text = labelStyle.Text;
LabelColumn = labelStyle.LabelColumn;
LabelMethod = labelStyle.LabelMethod;
}
public static Canvas RenderStackedLabelLayer(IViewport viewport, LabelLayer layer)
{
var canvas = new Canvas();
canvas.Opacity = layer.Opacity;
//todo: take into account the priority
var features = layer.GetFeaturesInView(viewport.Extent, viewport.Resolution);
var margin = viewport.Resolution * 50;
foreach (var layerStyle in layer.Styles)
{
var style = layerStyle;
var clusters = new List<Cluster>();
//todo: repeat until there are no more merges
ClusterFeatures(clusters, features, margin, layerStyle, viewport.Resolution);
foreach (var cluster in clusters)
{
Offset stackOffset = null;
foreach (var feature in cluster.Features.OrderBy(f => f.Geometry.GetBoundingBox().GetCentroid().Y))
{
if (layerStyle is IThemeStyle) style = (layerStyle as IThemeStyle).GetStyle(feature);
if ((style == null) || (style.Enabled == false) || (style.MinVisible > viewport.Resolution) || (style.MaxVisible < viewport.Resolution)) continue;
if (stackOffset == null) //first time
{
stackOffset = new Offset();
if (cluster.Features.Count > 1)
canvas.Children.Add(RenderBox(cluster.Box, viewport));
}
else stackOffset.Y += 18; //todo: get size from text, (or just pass stack nr)
if (!(style is LabelStyle)) throw new Exception("Style of label is not a LabelStyle");
var labelStyle = style as LabelStyle;
string labelText = layer.GetLabel(feature);
var position = new Mapsui.Geometries.Point(cluster.Box.GetCentroid().X, cluster.Box.Bottom);
canvas.Children.Add(RenderLabel(position, stackOffset, labelStyle, viewport, labelText));
}
}
}
return canvas;
}
public static Canvas RenderLabelLayer(IViewport viewport, LabelLayer layer)
{
var canvas = new Canvas();
canvas.Opacity = layer.Opacity;
//todo: take into account the priority
var features = layer.GetFeaturesInView(viewport.Extent, viewport.Resolution).ToList();
var stackOffset = new Offset();
foreach (var layerStyle in layer.Styles)
{
var style = layerStyle;
foreach (var feature in features)
{
if (layerStyle is IThemeStyle) style = (layerStyle as IThemeStyle).GetStyle(feature);
if ((style == null) || (style.Enabled == false) || (style.MinVisible > viewport.Resolution) || (style.MaxVisible < viewport.Resolution)) continue;
if (!(style is LabelStyle)) throw new Exception("Style of label is not a LabelStyle");
var labelStyle = style as LabelStyle;
string labelText = layer.GetLabel(feature);
canvas.Children.Add(RenderLabel(feature.Geometry.GetBoundingBox().GetCentroid(),
stackOffset, labelStyle, viewport, labelText));
}
}
return canvas;
}
public static UIElement RenderLabel(Mapsui.Geometries.Point point, Offset stackOffset, LabelStyle style, IViewport viewport, string text)
{
Mapsui.Geometries.Point p = viewport.WorldToScreen(point);
var windowsPoint = new WinPoint(p.X, p.Y);
var border = new Border();
var textblock = new TextBlock();
//Text
textblock.Text = text;
//Colors
textblock.Foreground = new SolidColorBrush(style.ForeColor.ToXaml());
border.Background = new SolidColorBrush(style.BackColor.Color.ToXaml());
//Font
textblock.FontFamily = new FontFamily(style.Font.FontFamily);
textblock.FontSize = style.Font.Size;
//set some defaults which should be configurable someday
const double witdhMargin = 3.0;
const double heightMargin = 0.0;
textblock.Margin = new Thickness(witdhMargin, heightMargin, witdhMargin, heightMargin);
border.CornerRadius = new CornerRadius(4);
border.Child = textblock;
//Offset
var textWidth = textblock.ActualWidth;
var textHeight = textblock.ActualHeight;
#if !SILVERLIGHT && !NETFX_CORE
// in WPF the width and height is not calculated at this point. So we use FormattedText
getTextWidthAndHeight(ref textWidth, ref textHeight, style, text);
#endif
border.SetValue(Canvas.LeftProperty, windowsPoint.X + style.Offset.X + stackOffset.X - (textWidth + 2 * witdhMargin) * (short)style.HorizontalAlignment * 0.5f);
border.SetValue(Canvas.TopProperty, windowsPoint.Y + style.Offset.Y + stackOffset.Y - (textHeight + 2 * heightMargin) * (short)style.VerticalAlignment * 0.5f);
return border;
}
public static UIElement RenderLabel(Mapsui.Geometries.Point point, Offset stackOffset, LabelStyle style, IViewport viewport)
{
return RenderLabel(point, stackOffset, style, viewport, style.Text);
}
public static CALayer RenderLabelLayer(IViewport viewport, LabelLayer layer, List<IFeature> features)
{
var canvas = new CALayer();
canvas.Opacity = (float)layer.Opacity;
//todo: take into account the priority
var stackOffset = new Offset();
if (layer.Style != null)
{
var style = layer.Style;
foreach (var feature in features)
{
if (style is IThemeStyle) style = (style as IThemeStyle).GetStyle(feature);
if ((style == null) || (style.Enabled == false) || (style.MinVisible > viewport.Resolution) || (style.MaxVisible < viewport.Resolution)) continue;
if (!(style is LabelStyle)) throw new Exception("Style of label is not a LabelStyle");
//var labelStyle = style as LabelStyle;
string labelText = layer.GetLabelText(feature);
var label = RenderLabel (feature.Geometry as Mapsui.Geometries.Point,
style as LabelStyle, feature, viewport, labelText);
canvas.AddSublayer(label);
}
}
return canvas;
}
public bool Equals(Offset offset)
{
if (X != offset.X) return false;
if (Y != offset.Y) return false;
return true;
}
public Offset(Offset offset)
{
X = offset.X;
Y = offset.Y;
}
