Accessing OGR STYLEITEMAUTO Labels from mapscript

[aboudreault]

We should be able to retrieve label styles from mapscript (getShape()/getValue) when using OGR STYLEITEMAUTO. This work can be done in mapogr.cpp. For this requirement, the following processing key will be added: "GETSHAPE_STYLE_ITEMS". If the user needs to retrieve the ogr label styles, he can simply add this line in it mapfile in the desired layer section:

• PROCESSING "GETSHAPE_STYLE_ITEMS=all"
  

Processing key values

• all : Return all the styles supported by mapogr.cpp.
  

Label Styles supported

• OGR:LabelText : the label text string.
• OGR:LabelAngle : the label angle.
• OGR:LabelSize : the label size.
• OGR:LabelColor : the label foreground color.

[dmorissette]

Patch committed in r7835.

Moving to doc component to add mention of new PROCESSING "GETSHAPE_STYLE_ITEMS=all" directive in OGR HOWTO.

[aboudreault]

Update: Label Styles supported

• OGR:LabelFont
• OGR:LabelSize
• OGR:LabelText : label text string
• OGR:LabelAngle
• OGR:LabelFColor : Foreground Color
• OGR:LabelBColor : Background Color
• OGR:LabelPlacement
• OGR:LabelAnchor
• OGR:LabelDx
• OGR:LabelDy
• OGR:LabelPerp : Perpendicular Offset
• OGR:LabelBold
• OGR:LabelItalic
• OGR:LabelUnderline
• OGR:LabelPriority
• OGR:LabelStrikeout
• OGR:LabelStretch
• OGR:LabelAdjHor
• OGR:LabelAdjVert
• OGR:LabelHColor : Shadow Color (gdal > 1.4.0)
• OGR:LabelOColor : Outline Color (gdal > 1.6.0)

(See ​http://www.gdal.org/ogr/ogr_feature_style.html for more details)

[jmckenna]

• added section in OGR document
• updated the mapfile reference's LAYER PROCESSSING section