private GeoImage GetCacheImage(PageGeoCanvas pageGeoCanvas, GeographyUnit geographyUnit, RectangleShape adjustedWorldExtent, Collection <SimpleCandidate> labelsInAllLayers, double width, double height)
{
RectangleShape currentBoundingBox = GetBoundingBox();
if (mapImageCache == null && Layers.Count > 0)
{
Bitmap bitmap = null;
MemoryStream memoryStream = null;
try
{
bitmap = new Bitmap((int)width, (int)height);
PlatformGeoCanvas tmpCanvas = new PlatformGeoCanvas();
tmpCanvas.DrawingQuality = DrawingQuality.HighSpeed;
tmpCanvas.BeginDrawing(bitmap, currentBoundingBox, geographyUnit);
pageGeoCanvas.BeginDrawing(tmpCanvas, adjustedWorldExtent, MapUnit);
lock (Layers)
{
foreach (Layer layer in Layers)
{
if (!layer.IsOpen)
{
layer.Open();
}
pageGeoCanvas.Flush();
layer.Draw(pageGeoCanvas, labelsInAllLayers);
}
}
pageGeoCanvas.EndDrawing();
tmpCanvas.EndDrawing();
IsDrawing = false;
memoryStream = new MemoryStream();
bitmap.Save(memoryStream, System.Drawing.Imaging.ImageFormat.Png);
mapImageCache = new GeoImage(memoryStream);
}
catch (Exception ex)
{
GisEditor.LoggerManager.Log(LoggerLevel.Debug, ex.Message, new ExceptionInfo(ex));
}
finally
{
bitmap?.Dispose();
}
}
return(mapImageCache);
}
private void DrawInternal(GeoCanvas canvas, Collection <SimpleCandidate> labelsInAllLayers)
{
RectangleShape currentBoundingBox = GetBoundingBox();
AreaStyle brushStyle = BackgroundMask.CloneDeep() as AreaStyle;
brushStyle.OutlinePen.Width = 0;
brushStyle.Draw(new BaseShape[] { currentBoundingBox }, canvas, new Collection <SimpleCandidate>(), labelsInAllLayers);
// Clear Cache images
if (LastmapExtent != null)
{
if (LastmapExtent.UpperLeftPoint.X != MapExtent.UpperLeftPoint.X ||
LastmapExtent.UpperLeftPoint.Y != MapExtent.UpperLeftPoint.Y ||
LastmapExtent.LowerRightPoint.X != MapExtent.LowerRightPoint.X ||
LastmapExtent.LowerRightPoint.Y != MapExtent.LowerRightPoint.Y ||
IsDrawing)
{
mapImageCache = null;
}
}
//For adjusting the world extent of the map to the ratio of the drawing area.
RectangleShape adjustedWorldExtent = ExtentHelper.GetDrawingExtent(MapExtent, (float)currentBoundingBox.Width, (float)currentBoundingBox.Height);
RectangleShape boundingBox = GetBoundingBox();
PointShape ajustedWorldCenter = adjustedWorldExtent.GetCenterPoint();
PageGeoCanvas pageGeoCanvas = new PageGeoCanvas(new RectangleShape(0, boundingBox.Height, boundingBox.Width, 0), currentBoundingBox);
//if (EnableClipping)
//{
// pageGeoCanvas.EnableCliping = true;
// pageGeoCanvas.ClipingArea = adjustedWorldExtent;
//}
//if (canvas is GdiPlusGeoCanvas && DrawingMode != Core.DrawingMode.Vector)
// only display on map.
if (DrawingMode != MapPrinterDrawingMode.Vector && !(canvas is PrinterGeoCanvas))
{
double width = boundingBox.Width / canvas.CurrentWorldExtent.Width * canvas.Width;
double height = boundingBox.Height / canvas.CurrentWorldExtent.Height * canvas.Height;
GeoImage image = GetCacheImage(pageGeoCanvas, canvas.MapUnit, adjustedWorldExtent, labelsInAllLayers, width, height);
pageGeoCanvas.BeginDrawing(canvas, adjustedWorldExtent, MapUnit);
if (image != null)
{
pageGeoCanvas.DrawWorldImage(image, ajustedWorldCenter.X, ajustedWorldCenter.Y, (float)boundingBox.Width - 0.5f, (float)boundingBox.Height - 0.5f, DrawingLevel.LabelLevel);
}
if (DrawDescription)
{
DrawDescriptionText(pageGeoCanvas);
}
//pageGeoCanvas.EnableCliping = false;
pageGeoCanvas.EndDrawing();
}
// display on map or printer.
else
{
pageGeoCanvas.BeginDrawing(canvas, adjustedWorldExtent, MapUnit);
double increase = 0;
if (BackgroundMask.OutlinePen != null)
{
float haflPenWidth = BackgroundMask.OutlinePen.Width / 2;
increase = haflPenWidth * canvas.CurrentWorldExtent.Width / canvas.Width;
}
canvas.ClippingArea = new RectangleShape(
currentBoundingBox.UpperLeftPoint.X - increase,
currentBoundingBox.UpperLeftPoint.Y + increase,
currentBoundingBox.LowerRightPoint.X + increase,
currentBoundingBox.LowerRightPoint.Y - increase);
if (canvas is PrinterGeoCanvas)
{
foreach (Layer layer in Layers)
{
pageGeoCanvas.Flush();
float savedDrawingMarginPercentage = 0;
FeatureLayer featureLayer = layer as FeatureLayer;
if (featureLayer != null)
{
savedDrawingMarginPercentage = featureLayer.DrawingMarginInPixel;
featureLayer.DrawingMarginInPixel = 0;
}
layer.SafeProcess(() =>
{
layer.Draw(pageGeoCanvas, labelsInAllLayers);
});
if (featureLayer != null && savedDrawingMarginPercentage != 0)
{
featureLayer.DrawingMarginInPixel = savedDrawingMarginPercentage;
}
}
}
else
{
using (MemoryStream ms = GetImageStream(canvas, labelsInAllLayers, adjustedWorldExtent, boundingBox))
{
pageGeoCanvas.DrawWorldImage(new GeoImage(ms), ajustedWorldCenter.X, ajustedWorldCenter.Y, (float)boundingBox.Width - 0.5f, (float)boundingBox.Height - 0.5f, DrawingLevel.LabelLevel);
}
//foreach (Layer layer in Layers)
//{
// pageGeoCanvas.Flush();
// layer.SafeProcess(() =>
// {
// layer.Draw(pageGeoCanvas, labelsInAllLayers);
// });
//}
}
if (DrawDescription)
{
DrawDescriptionText(pageGeoCanvas);
}
//pageGeoCanvas.EnableCliping = false;
var areaStyle = new AreaStyle(BackgroundMask.OutlinePen)
{
DrawingLevel = DrawingLevel.LabelLevel
};
areaStyle.Draw(new BaseShape[1] {
currentBoundingBox
}, canvas, new Collection <SimpleCandidate>(), labelsInAllLayers);
canvas.ClippingArea = null;
}
AreaStyle lineStyle = new AreaStyle(BackgroundMask.OutlinePen.CloneDeep());
lineStyle.DrawingLevel = DrawingLevel.LabelLevel;
lineStyle.Draw(new BaseShape[] { currentBoundingBox }, canvas, new Collection <SimpleCandidate>(), labelsInAllLayers);
LastmapExtent = new RectangleShape(MapExtent.UpperLeftPoint.X, MapExtent.UpperLeftPoint.Y, MapExtent.LowerRightPoint.X, MapExtent.LowerRightPoint.Y);
}