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DynaPDF.Parser.DeleteText
Deletes text in the area.
| Component | Version | macOS | Windows | Linux | Server | iOS SDK |
| DynaPDF | 14.0 | ✅ Yes | ✅ Yes | ✅ Yes | ✅ Yes | ✅ Yes |
Parameters
| Parameter | Description | Example |
|---|---|---|
| The PDF reference. | ||
| Left | The left coordinate of the rectangle. | 0 |
| Bottom | The bottom coordinate of the page. | 0 |
| Right | The right coordinate of the page. | 595 |
| Top | The top coordinate of the page. | 842 |
Result
Returns 1, 0 or error.
Description
Deletes text in the area.The function deletes every glyph or character that touches or lies inside the rectangle Area.
Area must be defined as if the page would be viewed in a PDF viewer. That means in bottom up coordinates and the orientation must be considered (see DynaPDF.GetOrientation). The width and height of a page must be calculated from the crop box if set, or from the media box otherwise (see DynaPDF.GetPageBBox). Note also that the width and height must be exchanged if the orientation is 90, -90, 270, or -270 degrees.
Note that this function deletes text only. Text can also occur in form of images or vector graphics. There are no functions yet to identify and delete text in such objects.
If the function succeeds the return value is true. If the function fails the return value is false.
Examples
Delete a rectangle in text:
# initialize parser
Set Variable [ $OptimizeFlags ; Value: 0 ]
Set Variable [ $r ; Value: MBS( "DynaPDF.Parser.Create"; $pdf; $OptimizeFlags ) ]
#
# Now parse a page
Set Variable [ $r ; Value: MBS("DynaPDF.Parser.ParsePage"; $pdf; 1; "EnableTextSelection") ]
If [ MBS("IsError") ]
Show Custom Dialog [ "Failed to parse page" ; $r ]
Else
# Define the rectangle
Set Variable [ $areaLeft ; Value: 200 ]
Set Variable [ $areaWidth ; Value: 200 ]
Set Variable [ $areaTop ; Value: 200 ]
Set Variable [ $areaHeight ; Value: 200 ]
#
# we need right and bottom. And since coordinates are bottom-up, we bottom is the smaller y value
Set Variable [ $areaRight ; Value: $areaLeft + $areaWidth ]
Set Variable [ $areaBottom ; Value: $areaTop ]
Set Variable [ $areaTop ; Value: $areaTop + $areaHeight ]
#
# now delete text in that area
Set Variable [ $r ; Value: MBS( "DynaPDF.Parser.DeleteText"; $pdf; $areaTop; $areaBottom; $areaLeft; $areaRight) ]
If [ MBS("IsError") ]
Show Custom Dialog [ "Failed to parse page" ; $r ]
Else
# Save changes back
Set Variable [ $r ; Value: MBS( "DynaPDF.Parser.WriteToPage"; $pdf; $OptimizeFlags) ]
End If
End If
See also
- DynaPDF.GetOrientation
- DynaPDF.GetPageBBox
- DynaPDF.Parser.Create
- DynaPDF.Parser.ExtractText
- DynaPDF.Parser.FindText
- DynaPDF.Parser.ParsePage
- DynaPDF.Parser.ReplaceSelText
- DynaPDF.Parser.SelectionText
- DynaPDF.Parser.WriteToPage
- IsError
Release notes
- Version 14.0
- Added DynaPDF parser functions: DynaPDF.Parser.ChangeAltFont, DynaPDF.Parser.Create, DynaPDF.Parser.DeleteText, DynaPDF.Parser.ExtractText, DynaPDF.Parser.FindText, DynaPDF.Parser.Line, DynaPDF.Parser.ParsePage, DynaPDF.Parser.ReplaceSelText, DynaPDF.Parser.SetAltFont, DynaPDF.Parser.TextMatrix, DynaPDF.Parser.WriteToPage.
Example Databases
Blog Entries
This function checks for a license.
Created 23th November 2023, last changed 23th November 2023
