// <summary>
// Adds randomly positioned labels to the image layer.
// </summary>
public void ImageLabels(AxMap axMap1)
{
axMap1.Projection = tkMapProjection.PROJECTION_NONE;
axMap1.GrabProjectionFromData = true;
Image img = new Image();
OpenFileDialog dlg = new OpenFileDialog {
Filter = img.CdlgFilter
};
if (dlg.ShowDialog() == DialogResult.OK)
{
img.Open(dlg.FileName, ImageType.USE_FILE_EXTENSION, false, null);
axMap1.AddLayer(img, true);
Labels lbl = img.Labels;
lbl.FontSize = 12;
lbl.FontBold = true;
lbl.FontOutlineVisible = true;
lbl.FontOutlineColor = (255 << 16) + (255 << 8) + 255; //white
lbl.FontOutlineWidth = 4;
LabelCategory cat = lbl.AddCategory("Red");
cat.FontColor = 255;
cat = lbl.AddCategory("Blue");
cat.FontColor = 255 << 16;
cat = lbl.AddCategory("Yellow");
cat.FontColor = 255 + 255 << 8;
Extents ext = img.Extents;
double xRange = ext.xMax - ext.xMin;
double yRange = ext.yMax - ext.yMin;
Random rnd = new Random();
for (int i = 0; i < 100; i++)
{
double x = xRange * rnd.NextDouble();
double y = yRange * rnd.NextDouble();
int categoryIndex = i % 3;
lbl.AddLabel("label" + Convert.ToString(i),
ext.xMin + x, ext.yMin + y, i * 3.6, categoryIndex);
}
axMap1.Redraw();
}
}
private void axMap1_MouseMoveEvent(object sender, _DMapEvents_MouseMoveEvent e)
{
#region 原版添加标签
if (sfMouseMove != null)
{
foreach (Shapefile sf in sfMouseMove.Values)
{
labels = sf.Labels;
labels.FontSize = 15;
labels.FontBold = true;
labels.FrameVisible = true;
labels.FrameType = tkLabelFrameType.lfRectangle;
labels.AutoOffset = false;
labels.OffsetX = 40;
LabelCategory cat = labels.AddCategory("Red");
cat.FontColor = 255;
double projX = 0.0;
double projY = 0.0;
Map.PixelToProj(e.x, e.y, ref projX, ref projY);
object result = null;
var ext = new Extents();
ext.SetBounds(projX, projY, 0.0, projX, projY, 0.0);
if (sf.SelectShapes(ext, 0.00007, SelectMode.INTERSECTION, ref result))
{
if (labelFlag_MouseMove == 0)
{
mouseMoveOperate(result, sf, labels, projX, projY);
Map.Redraw();
movemoveenter++;
string tStr = "aaa:" + movemoveenter;
int str = labels.Count;
Debug.Print("labels：" + str);
labelFlag_MouseMove = 1;
}
}
else
{
if (labelFlag_MouseMove == 1)
{
sf.Labels.Clear();
labelFlag_MouseMove = 0;
Map.Redraw();
movemoveenter++;
string tStr = "bbb:" + movemoveenter;
int str = labels.Count;
Debug.Print("labels：" + str);
}
}
}
}
#endregion
}
void MapMouseMoveEvent(object sender, _DMapEvents_MouseMoveEvent e)
{
#region 单重显示
Shapefile sf = App.Map.get_Shapefile(1);
if (sf != null)
{
Labels labels = sf.Labels;
labels.FontSize = 15;
labels.FontBold = true;
labels.FrameVisible = true;
labels.FrameType = tkLabelFrameType.lfRectangle;
labels.AutoOffset = false;
labels.OffsetX = 40;
LabelCategory cat = labels.AddCategory("Red");
cat.FontColor = 255;
double projX = 0.0;
double projY = 0.0;
App.Map.PixelToProj(e.x, e.y, ref projX, ref projY);
object result = null;
var ext = new Extents();
ext.SetBounds(projX, projY, 0.0, projX, projY, 0.0);
if (sf.SelectShapes(ext, 0.00005, SelectMode.INTERSECTION, ref result) && (p == 0))
{
//string temp = GisPoint.readOneData(projX, projY);
//string tempx = temp + "℃";
//if(Convert.ToDouble(temp)>=50)
//{
// labels.AddLabel(tempx, projX, projY, 0.0, 0);
//}
//else
//{
// labels.AddLabel(tempx, projX, projY, 0.0, -1);
//}
//p = 1;
}
else
{
sf.Labels.Clear();
p = 0;
}
App.Map.Redraw();
}
#endregion
}
private void axMap1_MouseDownEvent(object sender, _DMapEvents_MouseDownEvent e)
{
if (sfMouseDown != null)
{
foreach (Shapefile sf in sfMouseDown.Values)
{
if (sf != null)
{
Labels labels = sf.Labels;
labels.FontSize = 15;
labels.FontBold = true;
labels.FrameVisible = true;
labels.FrameType = tkLabelFrameType.lfRectangle;
labels.AutoOffset = false;
labels.OffsetX = 40;
LabelCategory cat = labels.AddCategory("Red");
cat.FontColor = 255;
double projX = 0.0;
double projY = 0.0;
Map.PixelToProj(e.x, e.y, ref projX, ref projY);
object result = null;
var ext = new Extents();
ext.SetBounds(projX - 0.0004, projY - 0.0004, 0.0, projX + 0.0004, projY + 0.0004, 0.0);
if (sf.SelectShapes(ext, 0.0001, SelectMode.INTERSECTION, ref result))
{
if (labelFlag_MouseDown == 0)
{
mouseDownOperate(result, sf, labels, projX, projY);
Map.Redraw();
labelFlag_MouseDown = 1;
}
}
else
{
if (labelFlag_MouseDown == 1)
{
sf.Labels.Clear();
Map.Redraw();
labelFlag_MouseDown = 0;
}
}
}
}
}
}
/// <summary>
/// Generate label categories for the given set of shapefile categories
/// </summary>
/// <param name="mapWin">The reference to MapWindow</param>
/// <param name="layerHandle">The handle of the layer</param>
internal static void GenerateCategories(LegendControl.Legend legend, int layerHandle)
{
Layer lyr = legend.GetLayer(layerHandle);
Shapefile sf = lyr.GetObject() as MapWinGIS.Shapefile;
Labels lb = sf.Labels;
sf.Labels.ClearCategories();
for (int i = 0; i < sf.Categories.Count; i++)
{
ShapefileCategory cat = sf.Categories.get_Item(i);
LabelCategory labelCat = lb.AddCategory(cat.Name);
labelCat.Expression = cat.Expression;
}
SymbologySettings settings = Globals.get_LayerSettings(layerHandle);
ColorBlend blend = (ColorBlend)settings.LabelsScheme;
if (blend != null)
{
ColorScheme scheme = ColorSchemes.ColorBlend2ColorScheme(blend);
if (settings.LabelsRandomColors)
{
lb.ApplyColorScheme(tkColorSchemeType.ctSchemeRandom, scheme);
}
else
{
lb.ApplyColorScheme(tkColorSchemeType.ctSchemeGraduated, scheme);
}
}
if (settings.LabelsVariableSize)
{
for (int i = 0; i < lb.NumCategories; i++)
{
lb.get_Category(i).FontSize = (int)((double)sf.Labels.FontSize +
(double)settings.LabelsSizeRange / ((double)lb.NumCategories - 1) * (double)i);
}
}
// Expressions aren't supported by labels yet, therefore we need to copy indices from the symbology
for (int i = 0; i < lb.Count; i++)
{
MapWinGIS.Label label = lb.get_Label(i, 0);
label.Category = sf.get_ShapeCategory(i);
}
}
public void AddText(double x, double y)
{
Labels labels = sf.Labels;
labels.FontSize = 15;
labels.FontBold = true;
labels.FrameVisible = false;
labels.FrameType = tkLabelFrameType.lfRectangle;
labels.AutoOffset = false;
labels.OffsetX = 40;
LabelCategory cat = labels.AddCategory("wenzi");
cat.FontColor = 255;
string aisLabel = "文字部分";
labels.AddLabel(aisLabel, x, y, 0.0, -1);
}
public void Add(ILabelStyle item)
{
_labels.AddCategory("");
_labels.Category[_labels.NumCategories - 1] = item.GetInternal(); // TODO: implement directly in MapWinGIS
}