void RepaintSnappoint(ISnapPoint snappoint)
{
if (snappoint == null)
{
return;
}
snappoint.Draw(mScreenDisplay);
}
/// <summary>
/// 在画布按照snappoint重画
/// </summary>
/// <param name="snappoint"></param>
void RepaintSnappoint(ISnapPoint snappoint)
{
if (snappoint == null)
{
return;
}
CanvasWrapper dc = new CanvasWrapper(this, Graphics.FromHwnd(Handle), ClientRectangle);
snappoint.Draw(dc);
dc.Graphics.Dispose();
dc.Dispose();
} /// <summary>
protected override void OnPaint(PaintEventArgs e)
{
e.Graphics.SmoothingMode = m_smoothingMode;
mScreenDisplay.BackGroundColor = BackColor;
if (mScreenDisplay.IsCacheDirty)
{
mScreenDisplay.StartRecording();
mScreenDisplay.StartDrawing(e.Graphics, 0);
mMap.Draw(mScreenDisplay);
object newObj = mScreenDisplay.NewObject;
if (newObj != null)
{
IScreenDisplayDraw drawNew = mScreenDisplay as IScreenDisplayDraw;
if (newObj is LineString)
{
Pen mpen = new Pen(Color.Blue);
drawNew.DrawLineString(newObj as LineString, mpen);
}
else if (newObj is MultiLineString)
{
Pen mpen = new Pen(Color.Blue);
drawNew.DrawMultiLineString(newObj as MultiLineString, mpen);
}
else if (newObj is Polygon)
{
Brush brush = new SolidBrush(Color.Blue);
drawNew.DrawPolygon(newObj as Polygon, brush, Pens.AliceBlue, false);
}
}
//绘制捕捉点
if (m_snappoint != null)
{
m_snappoint.Draw(mScreenDisplay);
}
mScreenDisplay.FinishDrawing();
mScreenDisplay.StopRecording();
}
}
void RepaintSnappoint(ISnapPoint snappoint)
{
if (snappoint == null)
return;
CanvasWrapper dc = new CanvasWrapper(this, Graphics.FromHwnd(Handle), ClientRectangle);
snappoint.Draw(dc);
dc.Graphics.Dispose();
dc.Dispose();
}
/// <summary>
/// 响应消息
/// </summary>
/// <param name="e"></param>
protected override void OnPaint(PaintEventArgs e)
{
CommonTools.Tracing.StartTrack(Program.TracePaint); //TracePaint=1
ClearPens(); //清空画笔
e.Graphics.SmoothingMode = m_smoothingMode;
CanvasWrapper dc = new CanvasWrapper(this, e.Graphics, ClientRectangle);
Rectangle cliprectangle = e.ClipRectangle;
if (m_staticImage == null)
{
cliprectangle = ClientRectangle;
m_staticImage = new Bitmap(ClientRectangle.Width, ClientRectangle.Height);
m_staticDirty = true;
}
RectangleF r = ScreenUtils.ToUnitNormalized(dc, cliprectangle);
if (float.IsNaN(r.Width) || float.IsInfinity(r.Width))
{
r = ScreenUtils.ToUnitNormalized(dc, cliprectangle);
}
if (m_staticDirty)
{
m_staticDirty = false;
CanvasWrapper dcStatic = new CanvasWrapper(this, Graphics.FromImage(m_staticImage), ClientRectangle);
dcStatic.Graphics.SmoothingMode = m_smoothingMode;
m_model.BackgroundLayer.Draw(dcStatic, r);
if (m_model.GridLayer.Enabled)
{
m_model.GridLayer.Draw(dcStatic, r);
}
PointF nullPoint = ToScreen(new UnitPoint(0, 0));
dcStatic.Graphics.DrawLine(Pens.Blue, nullPoint.X - 10, nullPoint.Y, nullPoint.X + 10, nullPoint.Y);
dcStatic.Graphics.DrawLine(Pens.Blue, nullPoint.X, nullPoint.Y - 10, nullPoint.X, nullPoint.Y + 10);
ICanvasLayer[] layers = m_model.Layers; //线条粗细颜色
for (int layerindex = layers.Length - 1; layerindex >= 0; layerindex--)
{
if (layers[layerindex] != m_model.ActiveLayer && layers[layerindex].Visible)
{
layers[layerindex].Draw(dcStatic, r);
}
}
if (m_model.ActiveLayer != null)
{
m_model.ActiveLayer.Draw(dcStatic, r);
}
dcStatic.Dispose();
}
e.Graphics.DrawImage(m_staticImage, cliprectangle, cliprectangle, GraphicsUnit.Pixel);
foreach (IDrawObject drawobject in m_model.SelectedObjects)
{
drawobject.Draw(dc, r);
}
if (m_newObject != null)
{
m_newObject.Draw(dc, r);
}
if (m_snappoint != null)
{
m_snappoint.Draw(dc);
}
if (m_selection != null)
{
m_selection.Reset();
m_selection.SetMousePoint(e.Graphics, this.PointToClient(Control.MousePosition));
}
if (m_moveHelper.IsEmpty == false)
{
m_moveHelper.DrawObjects(dc, r);
}
if (m_nodeMoveHelper.IsEmpty == false)
{
m_nodeMoveHelper.DrawObjects(dc, r);
}
dc.Dispose();
ClearPens();
CommonTools.Tracing.EndTrack(Program.TracePaint, "OnPaint complete");
}
