/// <summary>
/// 根据原始点调整矩形label，使其成一行
/// </summary>
private void AlignRectangle(ref Rectangle r, tkLabelAlignment alignment)
{
switch (alignment)
{
case tkLabelAlignment.laTopLeft:
r.X -= r.Width;
r.Y -= r.Height;
break;
case tkLabelAlignment.laTopCenter:
r.X -= r.Width / 2;
r.Y -= r.Height;
break;
case tkLabelAlignment.laTopRight:
r.X += 0;
r.Y -= r.Height;
break;
case tkLabelAlignment.laCenterLeft:
r.X -= r.Width;
r.Y -= r.Height / 2;
break;
case tkLabelAlignment.laCenter:
r.X -= r.Width / 2;
r.Y -= r.Height / 2;
break;
case tkLabelAlignment.laCenterRight:
r.X += 0;
r.Y -= r.Height / 2;
break;
case tkLabelAlignment.laBottomLeft:
r.X -= r.Width;
r.Y += 0;
break;
case tkLabelAlignment.laBottomCenter:
r.X -= r.Width / 2;
r.Y += 0;
break;
case tkLabelAlignment.laBottomRight:
// rect.MoveToXY(0, 0);
break;
}
return;
}
internal tkLabelAlignment m_alignment; // = tkLabelAlignment.laCenter;
/// <summary>
/// Creates a new instance of the AddLabelsForm
/// </summary>
public AddLabelsForm(MapWinGIS.Shapefile sf, tkLabelAlignment alignment)
{
InitializeComponent();
if (sf == null)
{
throw new Exception("AddLabelsForm: Unexpected null parameter");
}
m_alignment = alignment;
m_shapefile = sf;
cboLineOrientation.Enabled = false;
panel1.Visible = false;
ShpfileType type = Globals.ShapefileType2D(m_shapefile.ShapefileType);
if (type == ShpfileType.SHP_POLYGON)
{
optPosition1.Text = "Center";
optPosition2.Text = "Centroid";
optPosition3.Text = "Interior point";
optPosition4.Visible = false;
optPosition1.Tag = tkLabelPositioning.lpCenter;
optPosition2.Tag = tkLabelPositioning.lpCentroid;
optPosition3.Tag = tkLabelPositioning.lpInteriorPoint;
groupBox5.Height -= 30;
groupBox4.Top -= 30;
this.Height -= 30;
optPosition2.Checked = true; // TODO: choose according Labels.Positioning
}
else if (type == ShpfileType.SHP_POLYLINE)
{
optPosition1.Text = "First segment";
optPosition2.Text = "Last segment";
optPosition3.Text = "Middle segment";
optPosition4.Text = "The longest segment";
optPosition1.Tag = tkLabelPositioning.lpFirstSegment;
optPosition2.Tag = tkLabelPositioning.lpLastSegment;
optPosition3.Tag = tkLabelPositioning.lpMiddleSegment;
optPosition4.Tag = tkLabelPositioning.lpLongestSegement;
optPosition4.Checked = true; // TODO: choose according Labels.Positioning
cboLineOrientation.Enabled = true;
}
else
{
panel1.Visible = true;
optPosition1.Visible = false;
optPosition2.Visible = false;
optPosition3.Visible = false;
optPosition4.Visible = false;
this.Height -= 100;
groupBox4.Visible = false;
optAlignBottomCenter.Checked = (m_alignment == tkLabelAlignment.laBottomCenter);
optAlignBottomLeft.Checked = (m_alignment == tkLabelAlignment.laBottomLeft);
optAlignBottomRight.Checked = (m_alignment == tkLabelAlignment.laBottomRight);
optAlignCenterLeft.Checked = (m_alignment == tkLabelAlignment.laCenterLeft);
optAlignCenterRight.Checked = (m_alignment == tkLabelAlignment.laCenterRight || m_alignment == tkLabelAlignment.laCenter);
optAlignTopCenter.Checked = (m_alignment == tkLabelAlignment.laTopCenter);
optAlignTopLeft.Checked = (m_alignment == tkLabelAlignment.laTopLeft);
optAlignTopRight.Checked = (m_alignment == tkLabelAlignment.laTopRight);
// Applicable for polyline and polygon shapefiles
//throw new Exception("AddLabelsForm: invalid shapefile type");
}
// line orientation
cboLineOrientation.Items.Clear();
cboLineOrientation.Items.Add("Horizontal");
cboLineOrientation.Items.Add("Parallel");
cboLineOrientation.Items.Add("Perpendicular");
cboLineOrientation.SelectedIndex = 1;
}
/// <summary>
/// Generates labels with specified positions
/// </summary>
private void btnOk_Click(object sender, EventArgs e)
{
// callback and wait cursor
ICallback cBackOld = m_shapefile.GlobalCallback;
Callback cback = new Callback();
m_shapefile.GlobalCallback = cback;
this.Enabled = false;
this.Cursor = Cursors.WaitCursor;
MapWinGIS.Labels lb = m_shapefile.Labels;
tkLabelPositioning positioning = get_LabelPositioning();
lb.LineOrientation = (tkLineLabelOrientation)cboLineOrientation.SelectedIndex;
try
{
// generation
m_shapefile.GenerateLabels(-1, positioning, !chkLabelEveryPart.Checked);
m_shapefile.Labels.SavingMode = tkSavingMode.modeXMLOverwrite; // .lbl file should be updated
ShpfileType type = Globals.ShapefileType2D(m_shapefile.ShapefileType);
if (type == ShpfileType.SHP_POINT || type == ShpfileType.SHP_MULTIPOINT)
{
if (optAlignBottomCenter.Checked)
{
m_alignment = tkLabelAlignment.laBottomCenter;
}
if (optAlignBottomLeft.Checked)
{
m_alignment = tkLabelAlignment.laBottomLeft;
}
if (optAlignBottomRight.Checked)
{
m_alignment = tkLabelAlignment.laBottomRight;
}
if (optAlignCenter.Checked)
{
m_alignment = tkLabelAlignment.laCenter;
}
if (optAlignCenterLeft.Checked)
{
m_alignment = tkLabelAlignment.laCenterLeft;
}
if (optAlignCenterRight.Checked)
{
m_alignment = tkLabelAlignment.laCenterRight;
}
if (optAlignTopCenter.Checked)
{
m_alignment = tkLabelAlignment.laTopCenter;
}
if (optAlignTopLeft.Checked)
{
m_alignment = tkLabelAlignment.laTopLeft;
}
if (optAlignTopRight.Checked)
{
m_alignment = tkLabelAlignment.laTopRight;
}
}
// updating references to categories
if (lb.NumCategories > 0)
{
for (int i = 0; i < lb.Count; i++)
{
MapWinGIS.Label label = lb.get_Label(i, 0);
label.Category = m_shapefile.get_ShapeCategory(i);
}
}
}
finally
{
this.Enabled = true;
this.Cursor = Cursors.Default;
cback.Clear();
m_shapefile.GlobalCallback = cBackOld;
}
}
