基于地图开发控件GMap.Net 使用 (五) 原创 用户自定义标签图片
最近看到 fangping朋友的提问问是否可以自定义标签,相信大家对此问题都挺关注。回头看看Gmap动态库还真没提供此功能。自己添加一个!打开开源源码创建一个类名为GMapMarkerImage的类。此类功能:用户可添加自定义图片标签。
添加源码如下:
![](https://images.cnblogs.com/OutliningIndicators/ContractedBlock.gif)
public class GMapMarkerImage : GMapMarker
{
public float? Bearing;
private Image userImage=null;
public GMapMarkerImage(PointLatLng p)
: base(p)
{
Size = new System.Drawing.Size(Resources.bigMarkerGreen.Width, Resources.bigMarkerGreen.Height);
Offset = new Point(-10, -34);
}
public GMapMarkerImage(PointLatLng p ,string imageFile)
: base(p)
{
Size = new System.Drawing.Size(Resources.bigMarkerGreen.Width, Resources.bigMarkerGreen.Height);
Offset = new Point(-10, -34);
try
{
userImage = Bitmap.FromFile(imageFile);
userImage = new Bitmap(0, 0);
}
catch
{
}
}
public GMapMarkerImage(PointLatLng p, Image imageFile)
: base(p)
{
Size = new System.Drawing.Size(Resources.bigMarkerGreen.Width, Resources.bigMarkerGreen.Height);
Offset = new Point(-10, -34);
userImage = imageFile;
}
static readonly Point[] Arrow = new Point[] { new Point(-7, 7), new Point(0, -22), new Point(7, 7), new Point(0, 2) };
public override void OnRender(Graphics g)
{
#if !PocketPC
g.TranslateTransform(ToolTipPosition.X, ToolTipPosition.Y);
g.ResetTransform();
if (!Bearing.HasValue)
{
g.DrawImageUnscaled(userImage, LocalPosition.X, LocalPosition.Y);
}
#else
DrawImageUnscaled(g, Resources.shadow50, LocalPosition.X, LocalPosition.Y);
DrawImageUnscaled(g, Resources.marker, LocalPosition.X, LocalPosition.Y);
#endif
base.OnRender(g);
}
喜洋洋同学就到地图上面了