private void DoRender(RenderArgs args)
{
_isUseDummyMap = _canvas.DummyRenderModeSupport.IsDummyModel;
if (_buffer == null || _preSize.Width != _canvas.Container.Width || _preSize.Height != _canvas.Container.Height)
{
if (_buffer != null)
{
_buffer.Dispose();
}
_buffer = new Bitmap(_canvas.Container.Width, _canvas.Container.Height, PixelFormat.Format32bppArgb);
_preSize = _canvas.Container.Size;
_isUseDummyMap = false;
}
if (_isUseDummyMap)
{
RenderUseDummyMap(args, _buffer, _preEnvelope);
}
else
{
using (Graphics g = Graphics.FromImage(_buffer))
{
g.Clear(Color.Transparent);
Graphics og = args.Graphics;
args.BeginRender(g);
DirectRender(args);
_preEnvelope = _canvas.CurrentEnvelope.Clone();
og.DrawImage(_buffer, 0, 0);
}
}
}
private void Render(PaintEventArgs e)
{
if (_vectorMapRuntime == null || _vectorMapRuntime.Map == null)
{
e.Graphics.Clear(BackColor);
return;
}
try
{
_renderArg.BeginRender(e.Graphics);
e.Graphics.Clear(_vectorMapRuntime.Map.MapArguments.BackColor);
_vectorMapRuntime.Render(_renderArg);
//
if (_currentMapTool != null)
{
_currentMapTool.Render(_renderArg);
}
}
finally
{
_renderArg.EndRender();
//触发渲染完毕的事件通知(异步方式通知)
if (_renderFinishedNotify != null)
{
this.DoBeginInvoke(_renderFinishedNotify);
_renderFinishedNotify = null;
}
}
}
public void Render(object sender, IDrawArgs drawArgs)
{
if (_mapRuntime == null)
{
return;
}
if (_canvas == null)
{
_canvas = sender as ICanvas;
Init();
}
else
{
if (_coordinateTranform == null)
{
_coordinateTranform = _canvas.CoordTransform;
}
}
_renderArgs.BeginRender(drawArgs.Graphics as Graphics);
try
{
if (_isEnableDummyRender)
{
DoRender(_renderArgs);
}
else
{
DirectRender(_renderArgs);
}
}
finally
{
_renderArgs.EndRender();
}
}
