How to check if image on DrawPage and TextPortion is same?

[_savage]

I’ve got a document with five (bitmap) images.

When I iterate over document.DrawPage.createEnumeration() then I get five references to these images, e.g.

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pyuno object (com.sun.star.drawing.XShape)0x7fe063487c28{implementationName=SwXTextGraphicObject, supportedServices={…}, supportedInterfaces={…}}

When I iterate over the paragraphs (document.Text.createEnumeration()) then I get five text portions whose type is Frame, and upon iterating over the content of these frames I get TextContent like so:

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pyuno object (com.sun.star.text.XTextContent)0x7fe063484dc8{implementationName=SwXTextGraphicObject, supportedServices={…}, supportedInterfaces={…}}

Notice how both have the same implementationName “SwXTextGraphicObject”, because these are essentially the same images. But how can I test that at runtime? They seem to be different objects of different types, so how do I check that an image/shape on a DrawPage is the same as one inside of a Frame?

Interestingly, given the same object on a DrawPage, obj.Graphics returns a different value every time it’s accessed. Given that, I suspect that comparing images is not realistic?

[hubert lambert]

Hello,

What about comparing the GraphicURL property?

[_savage]

What about comparing the GraphicURL property?

The GraphicURL is a property of the TextGraphicService and would’t work for objects with Shape service support.

[_savage]

I ended up md5-hashing the bitmap data of images, and comparing the hashes. Shapes are converted to png first (see this thread).

Not pretty, resource-hungry, but it works.

[hubert lambert]

The GraphicURL is a property of the TextGraphicService and would’t work for objects with Shape service support.

No. XShape objects of type SwXTextGraphicObject support the TextGraphicObject service. Thus you can easily check if the source image (return by the GraphicURL property) is the same.

[_savage]

No. XShape objects of type SwXTextGraphicObject support the TextGraphicObject service. Thus you can easily check if the source image (return by the GraphicURL property) is the same.

I guess you’re correct. However, I just had a document where the following code:

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drawobjenum = document.DrawPage.createEnumeration()                                                       
while drawobjenum.hasMoreElements():
    drawobj = drawobjenum.nextElement()

Results in a XShape:

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pyuno object (com.sun.star.drawing.XShape)0x7feee6c24c98{implementationName=SwXShape, supportedServices={…}, supportedInterfaces={…}}

Undortunately…

[hubert lambert]

Check whether the object supports the right service and you should be done.

[_savage]

Check whether the object supports the right service and you should be done.

I did It doesn’t

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pyuno object (com.sun.star.drawing.XShape)0x7feee6c24c98{implementationName=SwXShape, supportedServices={com.sun.star.drawing.CustomShape,com.sun.star.drawing.Shape,com.sun.star.drawing.CustomShapeProperties,com.sun.star.drawing.FillProperties,com.sun.star.drawing.LineProperties,com.sun.star.drawing.Text,com.sun.star.drawing.TextProperties,com.sun.star.style.ParagraphProperties,com.sun.star.style.ParagraphPropertiesComplex,com.sun.star.style.ParagraphPropertiesAsian,com.sun.star.style.CharacterProperties,com.sun.star.style.CharacterPropertiesComplex,com.sun.star.style.CharacterPropertiesAsian,com.sun.star.drawing.ShadowProperties,com.sun.star.drawing.RotationDescriptor,com.sun.star.drawing.Shape}, supportedInterfaces={com.sun.star.beans.XPropertySet,com.sun.star.beans.XPropertyState,com.sun.star.text.XTextContent,com.sun.star.lang.XServiceInfo,com.sun.star.lang.XUnoTunnel,com.sun.star.drawing.XShape,com.sun.star.lang.XTypeProvider,com.sun.star.uno.XWeak,com.sun.star.uno.XAggregation,com.sun.star.drawing.XShape,com.sun.star.lang.XComponent,com.sun.star.beans.XPropertySet,com.sun.star.beans.XMultiPropertySet,com.sun.star.beans.XPropertyState,com.sun.star.beans.XMultiPropertyStates,com.sun.star.drawing.XGluePointsSupplier,com.sun.star.container.XChild,com.sun.star.lang.XServiceInfo,com.sun.star.lang.XTypeProvider,com.sun.star.lang.XUnoTunnel,com.sun.star.container.XNamed,com.sun.star.text.XText,com.sun.star.container.XEnumerationAccess,com.sun.star.text.XTextRangeMover,com.sun.star.drawing.XEnhancedCustomShapeDefaulter}}

[hubert lambert]

I mean: if it does not, pass... .
Or do you want also to compare shapes that are not images?

And after checking, you can simply rely on the equal operator. I.e., if the "XShape" object and the "XTextContent" object represent the same image, then

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objXShape == objXTextContent

will return True.