有没有办法让图形文字ArcMap中的规模?
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23-08-2019 - |
题
我使用此代码创建在ArcMap文本。但我似乎无法得到它,当你放大鳞片状注释文本。
有谁知道如何做到这一点?
//'First setup a color. We'll use RGB red
IRgbColor pRGBcolor = new RgbColor();
pRGBcolor.Blue = 0;
pRGBcolor.Red = 255;
pRGBcolor.Green = 0;
//'Next, cocreate a new TextElement
ITextElement pTextElement = new TextElementClass();
//'Query Interface (QI) to an IElement pointer and set
//'the geometry that was passed in
IElement pElement = pTextElement as IElement;
pElement.Geometry = Point;
//'Next, setup a font
stdole.IFontDisp pFontDisp = new stdole.StdFont() as stdole.IFontDisp;
pFontDisp.Name = "Arial";
pFontDisp.Bold = true;
//'Next, setup a TextSymbol that the TextElement will draw with
ITextSymbol pTextSymbol = new ESRI.ArcGIS.Display.TextSymbolClass();
pTextSymbol.Font = pFontDisp;
pTextSymbol.Color = pRGBcolor;
pTextSymbol.Size = Size;
pTextSymbol.HorizontalAlignment = esriTextHorizontalAlignment.esriTHACenter;
pTextSymbol.VerticalAlignment = esriTextVerticalAlignment.esriTVACenter;
pTextSymbol.Angle = Angle;
pTextSymbol.Text = Text;
//'set the size of the text symbol here, rather than on the font
//'Next, Give the TextSymbol and text string to the TextElement
pTextElement.Symbol = pTextSymbol;
pTextElement.Text = pTextSymbol.Text;
pTextElement.ScaleText = true;
ESRI.ArcGIS.Carto.IElementProperties3 aoElementPro = pTextElement as ESRI.ArcGIS.Carto.IElementProperties3;
aoElementPro.ReferenceScale = cGISHelpers.MapDomain.Map.MapScale;
解决方案
我们可以很好地添加文本根据规模而改变它的尺寸。对于这一点,我们需要使用IElementProperties3.ReferenceScale属性。
我没有C#代码,但是会附加一些示例VBA代码,你可以修改。
'--------------------------------
Sub ChangeTextElemRefScale()
Dim pDoc As IMxDocument
Dim pContainer As IGraphicsContainer
Dim pElement As IElement
Dim pTextElement As ITextElement
Dim pActiveView As IActiveView
Set pDoc = ThisDocument
Set pActiveView = pDoc.ActiveView
Set pContainer = pActiveView
'Loop through the graphics container
pContainer.Reset
Set pElement = pContainer.Next
While not pElement Is Nothing
'Get the specific text element
If TypeOf pElement Is ITextElement Then
Set pTextElement = pElement
If pTextElement.Text = "oregon" Then 'change this to your text element's text
Dim pElemProp As IElementProperties3
Set pElemProp = pTextElement
pElemProp.ReferenceScale = 15000000
End If
End If
Set pElement = pContainer.Next
Wend
pDoc.ActiveView.PartialRefresh esriViewGraphics, Nothing, Nothing
End Sub
'--------------------------------
其他提示
据我所知,你不能让一个TextSymbol与地图比例尺一起。这是因为TextElement的不可改变基于地图的程度,但,相反,使用的字体大小来确定它会如何大,以出现在屏幕上。
,我能想到的做到这一点,同时仍然使用TextSymbol是改变点尺寸(和,如果程度足够大,隐藏/显示元件),其程度的变化的最佳方式。我不知道这是什么,你确实需要一个“即注重程度文本控制”的。
或者,不能你只需要使用一个注释层或标签,你想要的文字大小来改变层?
在ITextElement
得到了一个属性ITextElement.ScaleText
。将此设置为true
和文本大小会自动适应。
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