Synthèse
The TextElement object provides access to properties and methods for managing text elements on a layout or in a map graphics layer.
Discussion
The TextElement object represents inserted text on a layout or in a map graphics layer. This includes items such as text, callouts, rectangle text, titles, and so on. It does not include text strings that are part of a legend, table frame, or other map surround elements. The listElements method on the Layout object returns a Python list of page layout element objects. You then must iterate through each item in the list or specify an index number to reference a specific page element object. To return a list of TextElement objects only, use the TEXT_ELEMENT constant for the elementType parameter. A wildcard value can also be used to further refine the search based on the element's name value. Give each text element a unique name so it can be easily referenced.
There are two methods to create text elements. The first is the createTextElement method on the ArcGISProject object, which allows you to create a text element in a layout or graphics layer using Point, Polygon, or Polyline geometry. The second method is to clone existing text elements using the clone method on the TextElement object. This is useful because, in some cases, it is easier to start with an existing element. When cloning an element, provide a suffix value so that cloned elements can be identified later using the listElements method using a wildcard and the same suffix value. The returned list of elements can be further modified or deleted using the delete method.
The elementPositionX and elementPositionY values are based on the element's anchor position, which is set on the Format tab in ArcGIS Pro. Anchor positions can be modified using the setAnchor method. It is important to understand the difference between the elementRotation and textAngle properties. The best example is with inserted rectangle text. The elementRotation property controls the rotation of the rectangle, and the textAngle property controls the angle of the text in the rectangle. For point text, both values are synchronized regardless of which property is set.
Text elements have getDefinition and setDefinition methods that allow you to modify additional properties that are not exposed to the TextElement class. See the Python CIM access help topic for more information.
Propriétés
| Propriété | Explication | Type de données |
| anchor (Lecture seule) | Returns one of the following string values that represent the current anchor position. To change the value, use the setAnchor method.
| String |
| elementHeight (Lecture et écriture) | The height of the element in page units. | Double |
| elementPositionX (Lecture et écriture) | The x-location of the element's anchor position. The units assigned or reported are in page units. | Double |
| elementPositionY (Lecture et écriture) | The y-location of the element's anchor position. The units assigned or reported are in page units. | Double |
| elementRotation (Lecture et écriture) | The element's rotation angle in degrees. Positive values rotate clockwise and negative values rotate counterclockwise. | Double |
| elementWidth (Lecture et écriture) | The width of the element in page units. | Double |
| fontFamilyName (Lecture et écriture) | The text symbol font associated with the element. Remarque :The value that appears in the Font name drop-down list on the ribbon does not always match the font_style_name property. Variable fonts contain named instances of font styles and also allow customization. Before setting a value, you can set it on the ribbon and verify the property value returned. | String |
| fontStyleName (Lecture et écriture) | Depending on the font, the styles may include regular, bold, italic, any combination of these, or an extended list. Remarque :The value that appears in the Font style drop-down list on the ribbon does not always match the font_style_name property. Variable fonts contain named instances of font styles and also allow customization. Before setting a value, you can set it on the ribbon and verify the property value returned. | String |
| isOverflowing (Lecture seule) | Returns True if the text does not fit within the boundaries of the geometry provided. This is typically displayed with red ellipsis on a layout. This allows you to change the font size or increase the geometry the text is being fit to. | Boolean |
| locked (Lecture et écriture) | When set to True, the element cannot be graphically selected in the layout view. | Boolean |
| longName (Lecture seule) | An element's full name including group information if it exists. For example, an element named 'Text' in a group element named 'Group Element' will return a longName value of 'Group Element\\Text'. If the element is not in a group, the longName will be the same as the name value. | String |
| name (Lecture et écriture) | The name of the element. It is important that all elements have a unique name so they can be easily referenced. | String |
| parentGroupElement (Lecture seule) | If the element is in a group, the value returned will be a GroupElement, otherwise a NoneType will be returned. | GroupElement |
| text (Lecture et écriture) | The text string associated with the element. | String |
| textAngle (Lecture et écriture) | The angle in degrees the text string is rotated. Positive values rotate clockwise and negative values rotate counterclockwise. | Double |
| textSize (Lecture et écriture) | The element text size in points. | Double |
| type (Lecture seule) | Returns a value of TEXT_ELEMENT. | String |
| visible (Lecture et écriture) | Specifies whether the element is visible in the layout or graphics layer. | Boolean |
Vue d’ensemble des méthodes
| Méthode | Explication |
| applyStyleItem (style_item) | Applies a StyleItem to a TextElement. |
| clone ({suffix}) | Provides a mechanism to clone an existing text element on a page layout. |
| delete () | Provides a mechanism to delete an existing text element on a page layout. |
| getDefinition (cim_version) | Returns a text element's CIM definition. |
| setAnchor (anchor) | The setAnchor method controls the anchor position. |
| setDefinition (definition_object) | Sets a text element's CIM definition. |
Méthodes
applyStyleItem (style_item)
When referencing a StyleItem using the listStyleItems method on the ArcGISProject class, the style_class parameter must be TEXT. For more information and code samples, refer the to StyleItem help topic.
Remarque :
Styles must be added to a project prior to using the applyStyleItem method. They can be added using the updateStyles method on the ArcGISProject class.
clone ({suffix})| Paramètre | Explication | Type de données |
suffix | An optional string that is used to tag each newly created text element. The new element gets the same element name as the parent text element, plus the suffix value, plus a numeric sequencer. For example, if the parent element name is FieldLabel and the suffix value is _copy, the newly cloned elements are named FieldLabel_copy, FieldLabel_copy_1, FieldLabel_copy_2, and so on. If a suffix is not provided, the results resemble FieldLabel_1, FieldLabel_2, FieldLabel_3, and so on. | String |
Grouped text elements can't be cloned. All grouped elements are graphic element types. Verify if a graphic element is grouped by using the isGroup property on the GraphicElement object.
delete ()
It may be necessary to delete existing or cloned text elements. Cloned elements, when created, can be given a custom suffix so they can be easy to find when using the wildcard parameter for the listElements method on the Layout object.
getDefinition (cim_version)
| Paramètre | Explication | Type de données |
cim_version | A string that represents the major version of the CIM that will be used.
| String |
| Type de données | Explication |
| Object | Returns the CIM definition for a TextElement. |
For more information about working with the CIM and samples, see Python CIM access.
setAnchor (anchor)
| Paramètre | Explication | Type de données |
anchor | A string that specifies an anchor position.
| String |
Setting the anchor position allows you to control how the element might expand with additional text. For example, setting the anchor position to CENTER_POINT with point text is useful for dynamic strings you want to keep centered such as a title at the top of a layout.
setDefinition (definition_object)
| Paramètre | Explication | Type de données |
definition_object | A modified CIM definition object originally retrieved using getDefinition. | Object |
For more information about working with the CIM and samples, see Python CIM access.
Exemple de code
The following script replaces 2022 with 2023 in all layout text element strings that contain the year in all layouts in a project.
import arcpy
search_text = '2022'
replace_text = '2023'
p = arcpy.mp.ArcGISProject(r'C:\Projects\YosemiteNP\Yosemite.aprx')
for lyt in p.listLayouts():
for txt in lyt.listElements('TEXT_ELEMENT'):
if search_text in txt.text:
print(f'For element: "{txt.name}" in layout: "{lyt.name}"')
print(f' Replacing: "{txt.text}"')
txt.text = txt.text.replace(search_text, replace_text)
print(f' With: "{txt.text}"')
print('')
p.save()The following script creates a layout and creates a text element using a system style item. Next, it changes the anchor position so when text is resized, it will stay centered on the layout. Finally, it resizes the text to fit the width of the layout, with a 10% buffer from the edges.
p = arcpy.mp.ArcGISProject('current')
#Create a layout
lyt = p.createLayout(8.5, 11, 'INCH', 'New Layout with Point Text')
lyt.openView()
#Create point text element using a system style item
txtStyleItem = p.listStyleItems('ArcGIS 2D', 'TEXT', 'Title (Serif)')[0]
ptTxt = p.createTextElement(lyt, arcpy.Point(4.25, 10), 'POINT',
'Fit My Title To Layout Width, Less 10%',
10, style_item=txtStyleItem)
#Change the anchor position and reposition the text to center
ptTxt.setAnchor('Center_Point')
ptTxt.elementPositionX = 4.25
ptTxt.elementPositionY = 10
#Adjust text size to fit the width of the layout
while ptTxt.elementWidth < (lyt.pageWidth - (lyt.pageWidth * 0.1)):
ptTxt.textSize = ptTxt.textSize + 0.1The following script creates a map, adds a layer file, and creates a graphics layer. It then iterates through each feature in the layer and generates a map graphic text element based on the feature's name value.
p = arcpy.mp.ArcGISProject('current')
#Create a map, add a layer file and create a graphics layer
m = p.createMap('New Map with Text Graphics', 'Map')
lyrFile = arcpy.mp.LayerFile(r'C:\Projects\GreatLakes\GreatLakes_CenterPts.lyrx')
m.addLayer(lyrFile)
lyr = m.listLayers('GreatLakes_CenterPoint')[0]
gl = m.createGraphicsLayer('New Graphics Layer')
#Create a map graphic at each point location using each feature's name value
txtStyleItem = p.listStyleItems('ArcGIS 2D', 'TEXT', 'Water (Large)')[0]
for row in arcpy.da.SearchCursor(lyr, ['SHAPE@XY', 'NAME']):
x, y = row[0]
txt = p.createTextElement(gl, arcpy.Point(x,y), 'POINT', row[1])
m.openView()The following script uses a JSON template to create a curve (arc) and a Bézier geometry. The geometries are used to create two graphic elements and two text elements in a new layout. Optionally, Python CIM access is used to modify the Bézier curve properties. For more information about creating geometry objects using JSON, see the Geometry objects developer help topic.
p = arcpy.mp.ArcGISProject('current')
lyt = p.createLayout(6, 3, 'INCH', 'New Layout with 2 curves')
#Construct a curve/arc graphic element using a default symbol
arcPath = {"curvePaths" : [[[3.5,1.25],{"c" : [[5,1.25],[4.25, 1.75]]}]]}
arc = arcpy.AsShape(arcPath, esri_json=True)
arcGra = p.createGraphicElement(lyt, arc, name='ArcPy_Arc')
arcTxt = p.createTextElement(lyt, arc, 'LINE', 'Arc-e-Text', 24, 'Comic Sans MS', name='ArcPy_ArcText')
#Construct a bezier curve graphic element using a system style item
curveStyle = p.listStyleItems('ArcGIS 2D', 'Line', 'Dashed 1 Long 1 Short')[0]
curvePath = {"curvePaths" : [[[1.25,1.25],
{"b" : [[3,1.5],[1.6875,2.75],[2.125,0]]}]]}
curve = arcpy.AsShape(curvePath, esri_json=True)
curveGra = p.createGraphicElement(lyt, curve, curveStyle, 'ArcPy_Curve')
curveTxt = p.createTextElement(lyt, curve, 'LINE', 'Curved text', 24, 'Comic Sans MS', name='ArcPy_CurveText')
#Optional CIM modification
curveTxt_cim = curveTxt.getDefinition('V3')
curveTxt_cim.symbol.symbol.verticalAlignment = 'Center'
curveTxt.setDefinition(curveTxt_cim)
lyt.openView()The following script creates a rectangle graphic and text element in a new layout. The text string is intentionally long so it can demonstrate how to resize the text to fit the rectangle. A function is used to create the rectangle, and the isOverflowing property is used to determine whether the text fits in the geometry.
def MakeRec_UL(ulx, uly, w, h):
xyRecList = [[ulx, uly], [ulx+w, uly], [ulx+w,uly-h], [ulx,uly-h], [ulx,uly]]
array = arcpy.Array([arcpy.Point(*coords) for coords in xyRecList])
rect = arcpy.Polygon(array)
return rect
p = arcpy.mp.ArcGISProject('current')
#Create a layout
lyt = p.createLayout(8.5, 11, 'INCH', 'New Layout with Rectangle Text')
lyt.openView()
#Rectangle Text
text = '''THIS TEXT WILL BE REDUCED UNTIL ALL THE TEXT FITS IN THE RECTANGLE AREA.
AGAIN - THIS TEXT WILL BE REDUCED UNTIL ALL THE TEXT FITS IN THE RECTANGLE AREA.
AND AGAIN - THIS TEXT WILL BE REDUCED UNTIL ALL THE TEXT FITS IN THE RECTANGLE AREA.'''
recTxt = p.createTextElement(lyt, MakeRec_UL(0.5, 10.5, 7.5, 1), 'POLYGON',
text, 25, 'Arial', 'Regular', name='ArcPy_RecText')
#Reduce text to fix rectangle
while recTxt.isOverflowing:
recTxt.textSize = recTxt.textSize - 1The following script creates a custom polygon graphic and text element in a new layout. The text string is intentionally long so it can demonstrate how it wraps to the geometry as well as how it resizes so the text fits the shape using the isOverflowing property. The script also demonstrates how to use Python CIM access to set the text element's background and border symbology.
p = arcpy.mp.ArcGISProject('current')
#Create a layout
lyt = p.createLayout(8.5, 11, 'INCH', 'New Layout with Polygon Text')
lyt.openView()
#Polygon Text
polyCoords = [[0.5, 10], [4.25, 10], [4.25, 9.5], [8, 9.5], [8, 8.5], [0.5, 8.5], [0.5, 10]]
polyShp = arcpy.Polygon(arcpy.Array([arcpy.Point(*coords) for coords in polyCoords]))
text = 'Some Text String that is really long and is <BOL>forced to wrap to other \
lines</BOL> so that we can see how it fits the polygon shape provided to the function.'
polyTxt = p.createTextElement(lyt, polyShp, 'POLYGON', text, 25,
'Arial', 'Regular', name='ArcPy_PolygonText')
#Reduce text to fit shape
while polyTxt.isOverflowing:
polyTxt.textSize = polyTxt.textSize - 1
#OPTIONAL CIM modifications
polyTxt_cim = polyTxt.getDefinition('V3')
#CIM Change text color
polyTxt_cim.symbol.symbol.symbol.symbolLayers[0].color.values = [0,0,255,100]
#CIM Create a graphic frame background symbol
bgRGBColor = arcpy.cim.CreateCIMObjectFromClassName('CIMRGBColor', 'V3')
bgRGBColor.values = [225, 225, 225, 100]
bgSolidFillLyr = arcpy.cim.CreateCIMObjectFromClassName('CIMSolidFill', 'V3')
bgSolidFillLyr.color = bgRGBColor
bgPolySym = arcpy.cim.CreateCIMObjectFromClassName('CIMPolygonSymbol', 'V3')
bgPolySym.symbolLayers = [bgSolidFillLyr]
bgSymRef = arcpy.cim.CreateCIMObjectFromClassName('CIMSymbolReference', 'V3')
bgSymRef.symbol = bgPolySym
GraphicFrame = arcpy.cim.CreateCIMObjectFromClassName('CIMGraphicFrame', 'V3')
GraphicFrame.backgroundSymbol = bgSymRef
#CIM Create a graphic frame border symbol
brdRGBColor = arcpy.cim.CreateCIMObjectFromClassName('CIMRGBColor', 'V3')
brdRGBColor.values = [255, 0, 0, 100]
brdSolidStrokeLyr = arcpy.cim.CreateCIMObjectFromClassName('CIMSolidStroke', 'V3')
brdSolidStrokeLyr.color = brdRGBColor
brdSolidStrokeLyr.miterLimit = 10
brdSolidStrokeLyr.width = 5
brdLineSym = arcpy.cim.CreateCIMObjectFromClassName('CIMLineSymbol', 'V3')
brdLineSym.symbolLayers = [brdSolidStrokeLyr]
brdSymRef = arcpy.cim.CreateCIMObjectFromClassName('CIMSymbolReference', 'V3')
brdSymRef.symbol = brdLineSym
GraphicFrame.borderSymbol = brdSymRef
polyTxt_cim.frame = GraphicFrame
polyTxt.setDefinition(polyTxt_cim)The following script constructs a graphic table based on data values from a table in a map. The layout was authored with a vertical line named vertLine, a horizontal line named horzLine, and a text element named cellText. Each element was authored with the appropriate symbology and text properties. The element's anchors were set to the upper left position, and the text element's vertical and horizontal justification were set to upper left.
def MakeRec_LL(llx, lly, w, h):
xyRecList = [[llx, lly], [llx, lly+h], [llx+w,lly+h], [llx+w,lly], [llx,lly]]
xyRecList = [[1,1],[1, 2], [2.75, 2], [2.75, 1], [1, 1]]
array = arcpy.Array([arcpy.Point(*coords) for coords in xyRecList])
rec = arcpy.Polygon(array)
return rec
p = arcpy.mp.ArcGISProject('CURRENT')
#Create a layout
lyt = p.createLayout(6, 3, 'INCH', 'New Layout with Rectangles')
#Construct a pre-defined rectangle graphic element using a system style item
# and a rectangle function that takes x/y min/max and a width/height
# using the lower left corner as a start location
polyStyle = p.listStyleItems('ArcGIS 2D', 'Polygon', 'Orchard')[0]
p.createPredefinedGraphicElement(lyt, MakeRec_LL(1, 1, 1.75, 1), 'RECTANGLE',
polyStyle, 'ArcPy_Rectangle_Env',
lock_aspect_ratio=False)
#Construct the same element above using a point location
rec = p.createPredefinedGraphicElement(lyt, arcpy.Point(3, 1), 'RECTANGLE',
polyStyle, 'ArcPy_Rectangle_Pt',
lock_aspect_ratio=False)
rec.elementWidth = 1.75
rec.elementHeight = 1
lyt.openView()Vous avez un commentaire à formuler concernant cette rubrique ?