Stream IWebMapRenderer.Render(WebMapView mapView, out string mimeType)
{
MemoryStream ms = new MemoryStream();
StreamWriter sw = new StreamWriter(ms);
sw.Write(Render(mapView, out mimeType));
sw.Flush();
ms.Position = 0;
return(ms);
}
protected virtual Stream RenderStreamInternal(WebMapView map, out string mimeType)
{
Image im = Render(map, out mimeType);
if (im == null)
{
return(null);
}
MemoryStream ms = new MemoryStream();
im.Save(ms, ImageCodec, EncoderParams);
im.Dispose();
ms.Seek(0, SeekOrigin.Begin);
mimeType = ImageCodec.MimeType;
return(ms);
}
public Image Render(WebMapView mapView, out string mimeType)
{
using (Surface s = CreateImageSurface())
{
Context c = new Context(s);
c.FillRule = FillRule.EvenOdd;
c.Antialias = Antialias.Subpixel;
if (!MapView.Presenter.IsRenderingSelection)
{
SetColour(c, MapView.BackgroundColor);
}
else
{
SetColour(c, new StyleColor(0, 0, 0, 0));
}
c.FillExtents();
while (_renderQueue.Count > 0)
{
RenderObject(_renderQueue.Dequeue(), c);
}
Bitmap bmp = new Bitmap(Width, Height, PixelFormat.Format32bppArgb);
using (Graphics graphics = Graphics.FromImage(bmp))
using (Win32Surface winSurface = new Win32Surface(graphics.GetHdc()))
using (Context context = new Context(winSurface))
{
context.SetSourceRGBA(0, 0, 0, 0);
context.FillExtents();
context.SetSource(s);
context.Paint();
}
mimeType = "image/bmp";
return(bmp);
}
}
public Image Render(WebMapView mapView, out string mimeType)
{
Bitmap bmp = new Bitmap(Width, Height, PixelFormat);
Graphics g = Graphics.FromImage(bmp);
g.SmoothingMode = SmoothingMode.AntiAlias;
//g.Transform = GetGdiViewTransform();
if (!MapView.Presenter.IsRenderingSelection)
{
g.Clear(ViewConverter.Convert(MapView.BackgroundColor));
}
while (_renderQ.Count > 0)
{
RenderObject(_renderQ.Dequeue(), g);
}
g.Dispose();
mimeType = "image/bmp";
return(bmp);
}
public string Render(WebMapView mapView, out string mimeType)
{
mimeType = "application/json";
StringBuilder sb = new StringBuilder();
sb.Append("{");
sb.Append(JsonUtility.FormatJsonAttribute("type", "FeatureCollection"));
sb.Append(",");
sb.Append("\"features\":");
sb.Append("[");
while (_renderQueue.Count > 0)
{
sb.Append(_renderQueue.Dequeue().Json);
if (_renderQueue.Count > 0)
{
sb.Append(",");
}
}
sb.Append("]");
sb.Append("}");
return(sb.ToString());
}
Stream IWebMapRenderer.Render(WebMapView mapView, out string mimeType)
{
return(RenderStreamInternal(mapView, out mimeType));
}
protected override Stream RenderStreamInternal(WebMapView map, out string mimeType)
{
Stream stream = base.RenderStreamInternal(map, out mimeType);
if (MapView.BackgroundColor == StyleColor.Transparent &&
TransparentColorIndex.HasValue &&
ImageCodec.Clsid == FindCodec("image/gif").Clsid)
{
Color trans = ViewConverter.Convert(MapView.BackgroundColor);
using (Bitmap bmpSrc = new Bitmap(stream))
{
using (Bitmap bmpTrgt = new Bitmap(bmpSrc.Width, bmpSrc.Height, PixelFormat.Format8bppIndexed))
{
ColorPalette cp = bmpSrc.Palette;
ColorPalette ncp = bmpTrgt.Palette;
int n = 0;
foreach (Color c in cp.Entries)
{
ncp.Entries[n++] = Color.FromArgb(255, c);
}
ncp.Entries[TransparentColorIndex.Value] = Color.FromArgb(0, ncp.Entries[TransparentColorIndex.Value]);
bmpTrgt.Palette = ncp;
BitmapData src =
bmpSrc.LockBits(new Rectangle(0, 0, bmpSrc.Width, bmpSrc.Height),
ImageLockMode.ReadOnly, bmpSrc.PixelFormat);
BitmapData dst =
bmpTrgt.LockBits(new Rectangle(0, 0, bmpTrgt.Width, bmpTrgt.Height), ImageLockMode.WriteOnly,
bmpTrgt.PixelFormat);
unsafe
{
for (int y = 0; y < bmpSrc.Height; y++)
{
for (int x = 0; x < bmpSrc.Width; x++)
{
((byte *)dst.Scan0.ToPointer())[(dst.Stride * y) + x] =
((byte *)src.Scan0.ToPointer())[(src.Stride * y) + x];
}
}
}
bmpSrc.UnlockBits(src);
bmpTrgt.UnlockBits(dst);
MemoryStream ms = new MemoryStream();
bmpTrgt.Save(ms, ImageFormat.Gif);
return(ms);
}
}
}
return(stream);
}
public void ConfigureMapView()
{
MapView = new WebMapView(this);
MapRequestConfig.ConfigureMapView(MapView);
}
