/// <summary>
/// 应用所选的颜色方案
/// </summary>
private void ApplyColorScheme2Categories()
{
if (_shapefile.Categories.Count > 0)
{
MapWinGIS.ColorScheme scheme = null;
if (icbCategories.SelectedIndex >= 0)
{
ColorBlend blend = (ColorBlend)icbCategories.ColorSchemes.List[icbCategories.SelectedIndex];
scheme = ColorSchemes.ColorBlend2ColorScheme(blend);
// saving the settings
//MWLite.Symbology.Layer layer = Globals.Legend.Layers.ItemByHandle(_layerHandle);
//_settings.CategoriesColorScheme = blend;
}
else
{
return;
}
if (chkRandomColors.Checked)
{
_shapefile.Categories.ApplyColorScheme(MapWinGIS.tkColorSchemeType.ctSchemeRandom, scheme);
}
else
{
_shapefile.Categories.ApplyColorScheme(MapWinGIS.tkColorSchemeType.ctSchemeGraduated, scheme);
}
MapWinGIS.ShapefileCategories categories = _shapefile.Categories;
//绘制catagorise选项
if (chkSetGradient.Checked)
{
for (int i = 0; i < categories.Count; i++)
{
ShapeDrawingOptions options = categories.get_Item(i).DrawingOptions;
options.SetGradientFill(options.FillColor, 75);
options.FillType = tkFillType.ftGradient;
}
}
else
{
for (int i = 0; i < categories.Count; i++)
{
ShapeDrawingOptions options = categories.get_Item(i).DrawingOptions;
options.FillColor2 = options.FillColor;
options.FillType = tkFillType.ftStandard;
}
}
}
}
/// <summary>
/// 为点类别设置具有可变大小的符号
/// </summary>
private void ApplyVariablePointSize()
{
if (chkUseVariableSize.Checked && (udMinSize.Value != udMaxSize.Value))
{
MapWinGIS.ShapefileCategories categories = _shapefile.Categories;
if (_shapefile.ShapefileType == ShpfileType.SHP_POINT || _shapefile.ShapefileType == ShpfileType.SHP_MULTIPOINT)
{
double step = (double)(udMaxSize.Value - udMinSize.Value) / ((double)categories.Count - 1);
for (int i = 0; i < categories.Count; i++)
{
categories.get_Item(i).DrawingOptions.PointSize = (int)udMinSize.Value + Convert.ToInt32(i * step);
}
}
else if (_shapefile.ShapefileType == ShpfileType.SHP_POLYLINE)
{
double step = (double)(udMaxSize.Value + udMinSize.Value) / (double)categories.Count;
for (int i = 0; i < categories.Count; i++)
{
categories.get_Item(i).DrawingOptions.LineWidth = (int)udMinSize.Value + Convert.ToInt32(i * step);
}
}
}
}
/// <summary>
/// Generates shapefile categories according to specified options
/// </summary>
private void btnOk_Click(object sender, EventArgs e)
{
if (cboField.SelectedIndex < 0)
{
Globals.MessageBoxInformation("No field for generation was selected.");
this.DialogResult = DialogResult.None;
return;
}
int count;
if (!Int32.TryParse(cboCategoriesCount.Text, out count))
{
Globals.MessageBoxError("Number of categories isn't a valid interger.");
return;
}
MapWinGIS.ShapefileCategories categories = _shapefile.Categories;
int index = ((ComboItem)cboField.SelectedItem).RealIndex;
categories.Generate(index, (MapWinGIS.tkClassificationType)cboClassificationType.SelectedIndex, count);
categories.Caption = "Categories: " + _shapefile.get_Field(index).Name;
if (chkUseVariableSize.Checked)
{
if (_shapefile.ShapefileType == ShpfileType.SHP_POINT || _shapefile.ShapefileType == ShpfileType.SHP_MULTIPOINT)
{
double step = (double)(udMaxSize.Value - udMinSize.Value) / ((double)categories.Count - 1);
for (int i = 0; i < categories.Count; i++)
{
categories.get_Item(i).DrawingOptions.PointSize = (int)udMinSize.Value + Convert.ToInt32(i * step);
}
}
else if (_shapefile.ShapefileType == ShpfileType.SHP_POLYLINE)
{
double step = (double)(udMaxSize.Value + udMinSize.Value) / (double)categories.Count;
for (int i = 0; i < categories.Count; i++)
{
categories.get_Item(i).DrawingOptions.LineWidth = (int)udMinSize.Value + Convert.ToInt32(i * step);
}
}
}
MapWinGIS.ColorScheme scheme = null;
if (icbColorScheme.SelectedIndex >= 0)
{
ColorBlend blend = (ColorBlend)icbColorScheme.ColorSchemes.List[icbColorScheme.SelectedIndex];
scheme = ColorSchemes.ColorBlend2ColorScheme(blend);
}
tkColorSchemeType type = chkRandomColors.Checked ? tkColorSchemeType.ctSchemeRandom : tkColorSchemeType.ctSchemeGraduated;
_shapefile.Categories.ApplyColorScheme(type, scheme);
if (chkSetGradient.Checked)
{
for (int i = 0; i < categories.Count; i++)
{
ShapeDrawingOptions options = categories.get_Item(i).DrawingOptions;
options.SetGradientFill(options.FillColor, 75);
options.FillType = tkFillType.ftGradient;
}
}
_shapefile.Categories.ApplyExpressions();
SaveSettings();
}
private void btnCategoryGenerate_Click(object sender, EventArgs e)
{
int count = Convert.ToInt32(udNumCategories.Value);
MapWinGIS.ShapefileCategories categories = _shapefile.Categories;
if (lstFields1.SelectedItem == null)
{
return;
}
string name = lstFields1.SelectedItem.ToString().ToLower().Trim();
int index = -1;
for (int i = 0; i < _shapefile.NumFields; i++)
{
if (_shapefile.get_Field(i).Name.ToLower() == name)
{
index = i;
break;
}
}
if (index == -1)
{
return;
}
MapWinGIS.tkClassificationType classification = chkUniqueValues.Checked ? tkClassificationType.ctUniqueValues : tkClassificationType.ctNaturalBreaks;
bool showWaiting = false;
if (classification == tkClassificationType.ctUniqueValues)
{
HashSet <object> set = new HashSet <object>();
for (int i = 0; i < _shapefile.NumShapes; i++)
{
object val = _shapefile.get_CellValue(index, i);
set.Add(val);
}
if (set.Count > 300)
{
showWaiting = true;
string s = string.Format("字段 = {1}.\n唯一值数量 = {0}.\n" +
"需要加载较长时间.\n是否继续?", set.Count, "[" + name.ToUpper() + "]");
if (MessageBox.Show(s, "MapWinGisDemo", MessageBoxButtons.YesNo, MessageBoxIcon.Question) == DialogResult.No)
{
return;
}
}
set.Clear();
}
if (showWaiting)
{
this.Enabled = false;
this.Cursor = Cursors.WaitCursor;
}
else
{
btnCategoryGenerate.Enabled = false;
}
// 生成目录
categories.Generate(index, classification, count);
categories.Caption = "Categories: " + _shapefile.get_Field(index).Name;
ApplyColorScheme2Categories();
if (chkUseVariableSize.Checked)
{
ApplyVariablePointSize();
}
_shapefile.Categories.ApplyExpressions();
RefreshCategoriesList();
RedrawMap();
// 保存设置
_settings.CategoriesClassification = classification;
_settings.CategoriesFieldName = name;
_settings.CategoriesSizeRange = (int)(udMaxSize.Value - udMinSize.Value);
_settings.CategoriesCount = (int)udNumCategories.Value;
_settings.CategoriesRandomColors = chkRandomColors.Checked;
_settings.CategoriesUseGradient = chkSetGradient.Checked;
_settings.CategoriesVariableSize = chkUseVariableSize.Checked;
if (showWaiting)
{
this.Enabled = true;
this.Cursor = Cursors.Default;
}
else
{
btnCategoryGenerate.Enabled = true;
}
RefreshControlsState(null, null);
MarkStateChanged();
}
protected internal int CalcHeight(bool UseExpandedHeight)
{
// to affect drawing of the expansion box externally
if (m_Expanded && ExpansionBoxCustomHeightFunction != null)
{
int ht = Constants.ITEM_HEIGHT;
bool Handled = false;
ExpansionBoxCustomHeightFunction(m_Handle, m_Legend.Width, ref ht, ref Handled);
if (Handled)
{
return(ht + Constants.ITEM_HEIGHT + Constants.EXPAND_BOX_TOP_PAD * 2);
}
else
{
return(Constants.ITEM_HEIGHT);
}
}
int ret = 0;
if (this.Type == eLayerType.Grid || this.Type == eLayerType.Image)
{
if (UseExpandedHeight == false && (m_Expanded == false || ColorLegend.Count == 0)) //|| (this.Type == eLayerType.Image))
{
ret = Constants.ITEM_HEIGHT;
}
else
{
ret = Constants.ITEM_HEIGHT + (ColorLegend.Count * Constants.CS_ITEM_HEIGHT) + 2;
}
if (UseExpandedHeight || m_Expanded)
{
ret += (ColorSchemeFieldCaption.Trim() != "" ? Constants.CS_ITEM_HEIGHT : 0) + (StippleSchemeFieldCaption.Trim() != "" ? Constants.CS_ITEM_HEIGHT : 0);
}
}
else
{
var sf = m_Legend.m_Map.get_Shapefile(this.Handle);
if ((UseExpandedHeight || m_Expanded) && sf != null)
{
ret = Constants.ITEM_HEIGHT + 2; // 图层名
int val1, val2;
val1 = (GetCategoryHeight(sf.DefaultDrawingOptions) + 2); // 默认图例
if (sf.Labels.Count == 0 || sf.Labels.Visible == false || true)
{
ret += val1;
}
else
{
LabelStyle style = new LabelStyle(sf.Labels.Options);
System.Drawing.Bitmap img = new System.Drawing.Bitmap(500, 200);
Graphics g = Graphics.FromImage(img);
Size size = style.MeasureString(g, "String", 30);
val2 = size.Height + 2;
ret += val1 > val2 ? val1 : val2;
}
if (sf.Categories.Count > 0)
{
ret += Constants.CS_ITEM_HEIGHT + 2; // 标题
MapWinGIS.ShapefileCategories categories = sf.Categories;
if (this.Type == eLayerType.LineShapefile || this.Type == eLayerType.PolygonShapefile)
{
ret += sf.Categories.Count * (Constants.CS_ITEM_HEIGHT + 2);
}
else
{
for (int i = 0; i < sf.Categories.Count; i++)
{
ret += GetCategoryHeight(categories.get_Item(i).DrawingOptions);
}
}
ret += 2;
}
if (sf.Charts.Count > 0 && sf.Charts.NumFields > 0 && sf.Charts.Visible)
{
ret += (Constants.CS_ITEM_HEIGHT + 2); // 标题
ret += sf.Charts.IconHeight;
ret += 2;
ret += (sf.Charts.NumFields * (Constants.CS_ITEM_HEIGHT + 2));
}
}
else
{
ret = Constants.ITEM_HEIGHT;
}
// TODO: 标题宽度
//if (UseExpandedHeight || m_Expanded)
// ret += (ColorSchemeFieldCaption.Trim() != "" ? Constants.CS_ITEM_HEIGHT : 0) + (StippleSchemeFieldCaption.Trim() != "" ? Constants.CS_ITEM_HEIGHT : 0);
}
m_height = ret;
return(ret);
}