Re: how Get Bitmap file from SVG module?
Hi jianlizhao, jianlizhao jianlizh...@hotmail.com wrote: Hi Armin: I send an Email to Texmaths's author , asked he some questions, communicate with each other as follows: My question: LaTeX will equations can be inserted as images (SVG or PNG formats) and the LaTeX, code is saved into the image attribute for further editing. His reply: Image attributes are not stored directly in the png file but in LibreOffice data that are attached to the image. attached the image attribute in openOffice data below:( basic code) ,,, Sub SetAttributes( oShape as Variant, iEqSize as Integer, sEqType as String, sCode as String) 'Add the Latex attribute to the image. Dim oAttributes as Variant, oLatexAttribute as Variant oAttributes = oShape.UserDefinedAttributes oLatexAttribute = createUnoStruct( ;com.sun.star.xml.AttributeDataquot; ) oLatexAttribute.Type = oLatexAttribute.Value = oAttributes.insertByName( ) oShape.UserDefinedAttributes = oAttributes End Sub ,,, My question is: When the image attribute very long, example 10M bytes, if it will wrong. I cannot tell you, I never used this. You will have to just try it out. I would guess that it will work, I see no reason someone should have added a size limitation to it. The image attribute can as a zip file saved in the odf? I do not know about internals, but saving image attributes with the image is done internally at save/export time from the AOO code. I see no way to do it yourself whithout changing this (e.g. implement callbacks which may be used in an external module if needed). I think it is also not necessary. Just try out if it works when you add that data and if it will be there again after reading it. Look forward to your reply. Best Regards! HTH! Sincerely, Armin -- ALG
Re: how Get Bitmap file from SVG module?
2012/6/3 jianlizhao jianlizh...@hotmail.com: Hi Armin: I send an Email to Texmaths's author , asked he some questions, communicate with each other as follows: My question: LaTeX will equations can be inserted as images (SVG or PNG formats) and the LaTeX, code is saved into the image attribute for further editing. His reply: Image attributes are not stored directly in the png file but in LibreOffice data that are attached to the image. But he did not tell me how to attached the image in openOffice data,could you tell me? KLatexFormula(1) works pretty well on AOO 3.4. You can also install an extension that makes easy to later edit the equation. It also offer an openoffice compatible image format that gives good results when exporting to PDF. This program is a completely different beast than the extension you mention: it can be used as stand alone program to generate images, provide a library of formulas... etc. (1) http://klatexformula.sourceforge.net/ Regards Ricardo
Re: how Get Bitmap file from SVG module?
Hi jianlizhao, On 01.06.2012 06:22, jianlizhao wrote: Hi Armin: You say this I understanding. I would insert original image aoo's write and display, I do not how to do it with zip file？ I am not sure I understand what you need to know. The method described is just a possibility to check the file content of ODF files. If you insert the reduced Bitmap as GraphicObject in a ODF document and save it, it will be contained. I understood from your last comments that including the raw data directly to ODF is not needed. Instead it is set as kind of comment to the inserted GraphicObject and thus evtl. indirectly saved and included in the ODF. How this may happen I have no idea, sorry. HTH! Look forward to your reply. Best Regards! -邮件原件- 发件人: Armin Le Grand [mailto:armin.le.gr...@me.com] 发送时间: 2012年5月31日 22:28 收件人: ooo-dev@incubator.apache.org 主题: Re: how Get Bitmap file from SVG module? Hi jianlizhao, much more simple, only a trick to look at the contents of a ODF file. Example: Save the file (e.g. foo.odf), extend filename (e.g. in explorer on windows) by *.ziz (- foo.odf.zip). You can the open the odf file as zip archive and inspect/check it's contents. HTH! [..] Sincerely, Armin -- ALG
Re: how Get Bitmap file from SVG module?
Hi jianlizhao, much more simple, only a trick to look at the contents of a ODF file. Example: Save the file (e.g. foo.odf), extend filename (e.g. in explorer on windows) by *.ziz (- foo.odf.zip). You can the open the odf file as zip archive and inspect/check it's contents. HTH! On 31.05.2012 13:54, jianlizhao wrote: Hi Armin: You reply said Another way is to add a '.zip' to the AOO file name and to open it as archive. how to do it? Can you give a simple and complete example, Programming languages using C++ ,runtime environment for Microsoft Windows. Look forward to your reply. Best Regards! -邮件原件- 发件人: Armin Le Grand [mailto:armin.le.gr...@me.com] 发送时间: 2012年5月30日 23:46 收件人: ooo-dev@incubator.apache.org 主题: Re: how Get Bitmap file from SVG module? Hi jianlizhao, [..] Sincerely, Armin -- ALG
Re: how Get Bitmap file from SVG module?
Hi jianlizhao, On 30.05.2012 16:29, jianlizhao wrote: Hi Armin: I find TexMaths extension is very like my needs. Described as follows: TexMaths is an extension designed to provide LaTeX support into LibreOffice. LaTeX equations can be inserted as images (SVG or PNG formats) and the LaTeX code is saved into the image attribute for further editing. My question as follows: The new type picture can be inserted as images (PNG formats) and the Original picture is saved into the image attribute for further used. the image attribute can be saved with a file? I have no idea, I never used something like this. If the example extension does it currently and it is allowed to save any binary data at the PNG then you can do the same (probably). To find out if it is saved with the file I would check if it is saved currently with the TexMaths extension. Another way is to add a '.zip' to the AOO file name and to open it as archive. There you can check for the contained single files and data, your binary data should be there somewhere. The difference between them is LaTeX equations is small and short, The new type picture is large. can This method rigth? If it serves your needs and works it is right. You need to check if the files you create are loadable by a standard office (the AOO3.4 release version for example). It should load and show the PNG. I cannot say if it will strip your binary data when saving changed, you have to find out yourself. The only possible drawback is when you or other people using your extension would spread files generated this way and these files are very big. This may cause high eMail loads and similar effects. People may ask 'why is this file so big, there is only one picture in it'. I would suggest to not spread such files with extra data in them too much, maybe you only need to use them inhouse or privately anyways. It is a very specialized usage of ODF files. The benefits of the treatment is: do not have to program a import filter, without considering the compatibility of the file , Only insert a picture into openoffice's write. Yes, looks reasonable. Look forward to your reply. Best Regards! Thanks, same to You. And good luck with it! Hi Armin: Receipt of your reply, I modified my needs. [..] Sincerely, Armin -- ALG
Re: how Get Bitmap file from SVG module?
Hi jianlizhao, I still have to guess what you want to do, but it sounds like: - Insert raw data file to draw/Impress - A special extension uses that data to proccess something and outputs a text file - That extension creates a Bitmap/BitmapEx AOO can display If this is correct I see no real reason to implement/embed this internally in AOO. If you only need the raw data in your extension, why use AOO for it and create a file format which is potentially very big? Why not load the raw data from an app which needs it and processes it (the extension itself)? It seems so specialized that I would think about a specialized solution. When you already put a *.txt file with results next to the ODF, why not also let the raw data be aside the ODF file? Why do you need Draw/Impress at all? Maybe I'm wrong, still guessing your needs and plan. On 25.05.2012 03:27, jianlizhao wrote: Hi Armin: Receipt of your reply, I modified my needs. The original picture I do not need to display and modify,only to provide data to the extension,used for data analysis and processing. This process does not need to show only need end result, the end result is saved to a TXT file. All requirements are summarized as follows: 1)On screen Display bmp or png file, the bmp or png converted from the original pictures. Yes. Who converts this? Which instance? 2) In the save file include two files, one is the original file. In order to achieve compatibility. Only useful when the extension is installed, no extra use for the standard user, but much bigger files? 3)on screen when the user delete the BMP file,in the save file, the file related to this BMP files do not save,that is also deleted. 4)In the extension, the original file for data analysis and processing, and processing the results are saved to txt file. It should be based on the screen select the BMP file,access to the corresponding original file. Do you have any good suggestions. See above! Thanks... Best Regards! [..] Sincerely, Armin -- ALG
Re: how Get Bitmap file from SVG module?
Hi Eric, On 24.05.2012 03:43, Yong Lin Ma wrote: Let me try to translate the message below. Thanks, that helped. Ansering below... Hi Armin, I see two interfaces XSVGPrinter and XSVGWriter in svg mdoule Could they be used for graphic in Bitmap format? No. For function extractFromGraphic in svgimagenode void extractFromGraphic ( const Graphic rGraphic drawinglayer :: primitive2d :: Primitive2DSequence rEmbedded, basegfx :: B2DRange rViewBox, BitmapEx rBitmapEx) What is parameter rBitmapEx work for? This is a helper method in module svxio. It is not exported from the svgio module to make that clear. It should not be called directly and may change in the future. Instead, use the classes Graphic and GraphicObject and work with the SvgData class used there if you want to do something in the environment of the office core code. From outside you may use the service XSvgParser to convert from io::XInputStream to uno::Sequence uno::Reference ::graphic::XPrimitive2D (the imported primitive representation of the SVG). Then use the service XPrimitive2DRenderer to convert such a primitive to a rendering::XBitmap. Grep the code to find usage examples. HTH! On Wed, May 23, 2012 at 5:06 PM, jianlizhaojianlizh...@hotmail.com wrote: Hi Armin: I ask you some question as below: In module svg, have two Interfaces, one is XSVGPrinter, the other is XSVGWriter. 1) Can I use these interfaces, output Bitmap file? 2) under the module svg, in the file of svgimagenode.cxx, void extractFromGraphic ( const Graphic rGraphic drawinglayer :: primitive2d :: Primitive2DSequence rEmbedded, basegfx :: B2DRange rViewBox, BitmapEx rBitmapEx) is the parameters rBitmapEx get Bitmap file? Thanks... Best Regards!
Re: how Get Bitmap file from SVG module?
Hi jianlizhao, On 24.05.2012 10:57, jianlizhao wrote: Hi Armin: Read your letter, I know my idea is stupid. I would like to achieve an ADDON expansion in openoffice's write, The extension function is plug a new type of picture into openoffice's write, need following requirements 1) There were also ODF-compatible File Format adaptions needed.That is to say, That is not installed the extended on the openoffice's write can open the saved file. 2) If the extension is installed, can use the extended functionality to deal with the inserted picture. This function is very similar to your SVGIO, so I need to look deeper SVGIO. Sorry, it is not similar and I would not suggest svgio as an example to extend for picture formats. The way to extend picture formats is to look at how e.g. png, jpeg and others are handled in the office and to extend these by a filter. Be warned, this is a complex (and fragile) system which will need a lot of care. Your raw format is pixel data, so this will fit much better than svgio. Svgio needed an exception to be hold at Graphic/GraphicObject at all, this will not be needed for another pixel-based format and thus is a very bad example for your case. All this would need to be done in the core, there are deep vcl- and tools-based mechanisms behind this, including the GraphicManager who will automatically buffer the picture data and import/export it on demand to rduce mem footprint. I think it cannot be done as an extension. What you could do in an extension is to implement the loader (raw data to Bitmap/BitmapEx) and insert that pixel data using API to the writer somehow. It will then not be embedded as the original raw bitmap data, but it will be in the system in a compatible way. HTH! Then modeled this idea, realization my needs. I have installed openoffice's SDK.Debugging through a simple C++ example of the addon. Do you have any good suggestions. Thanks... Best Regards! -邮件原件- 发件人: Armin Le Grand [mailto:armin.le.gr...@me.com] 发送时间: 2012年5月23日 20:51 收件人: ooo-dev@incubator.apache.org 主题: Re: how Get Bitmap file from SVG module? Hi jianlizhao, On 23.05.2012 11:06, jianlizhao wrote: Hi Armin: I ask you some question as below: In module svg, have two Interfaces, one is XSVGPrinter, the other is XSVGWriter. Both are interfaces, XSVGPrinter is not used at all and XSVGWriter is the current SVG export which has nothing to do with the new import. There also is no module svg, the module I added for the new SVG import is svgio. 1) Can I use these interfaces, output Bitmap file? No. 2) under the module svg, in the file of svgimagenode.cxx, void extractFromGraphic ( const Graphic rGraphic drawinglayer :: primitive2d :: Primitive2DSequence rEmbedded, basegfx :: B2DRange rViewBox, BitmapEx rBitmapEx) is the parameters rBitmapEx get Bitmap file? I am not sure what you want to do. To work with imported SVGs you need a Graphic (see vcl and GraphicObject, too) where it is loaded. From Graphic you may try const SvgDataPtr getSvgData() const; If getSvgData().is() there is a SVG graphic. At the contained SvgData you can use const BitmapEx getReplacement() const; to get the BitmapEx of the SVG. There is no need to work with stuff from svgio directly. All usages work with it are using the service XSvgParser and do the work for you, where XSvgParser is implemented in svgio. I still do not understand what you want to do, please explain this, else I cannot really help you. Thanks... Best Regards! Sincerely, Armin -- ALG
Re: how Get Bitmap file from SVG module?
Hi jianlizhao, On 24.05.2012 16:07, jianlizhao wrote: Hi Armin: I am very glad to receipt your letter, I see the following content in your blog: There were also ODF-compatible File Format adaptions needed, more concrete the in ODF already contained and described multi-image support. In ODF, the original SVG is now embedded to the 'Pictures' folder inside the ODF file as one would expect from such a feature and can be easily extracted (unzip the ODF file and there you are). There is also a Png file written as replacement image. The draw:frame is now multi-image capable (as the spec allows). In the case of a SVG it writes a good quality Png and the original SVG as draw:image elements. Since older (and other) office versions are only capable of loading a single (and thus the first) image, the Png is written first. This allows file exchange with other and older offices without breaking backward compatibility and/or ODF file exchange. I have two questions : 1) I would also like to use this method to insert the picture, so that in document will retain the original file, the original file is there are other useful. To achieve this you have to add the needed code to the core (similar as jpeg and png are added). This includes import code to get the data into a Bitmap/BitmapEx. This is uniquely held (using a unique ID calculated based on the bitmap data, there is one calculation defined for each format) at the GraphicManager and can be accessed using Graphic/GraphicObject. AFAIK it is also possible to hold the original raw data at the entry in the GraphicManager (to be able to write the original again in unchanged form without needing to export it to it's format). The feature you mentioned above is needed for file formats which differ in content, in Your case this is not needed since a e.g. reduced data BitmapEx can be recreated without data loss from your raw data. It makes no sense to write both, so no need for this feature. 2) How do I access the original file. The Graphic holding it (and the contact with the GraphicManager) may have it as raw data, but also has a link to a temporary storage (using the temp on your system) where it is swapped out. To Access, use Graphic/GraphicObject. I repeat here: It is no easy task to add a graphic format to the core. I'm also not the specialist for that, maybe someone else knows in more details about exactly what steps have to be done to implement it. HTH! Thanks... Best Regards! -邮件原件- 发件人: Armin Le Grand [mailto:armin.le.gr...@me.com] 发送时间: 2012年5月24日 18:10 收件人: ooo-dev@incubator.apache.org 主题: Re: how Get Bitmap file from SVG module? Hi jianlizhao, [..] Sincerely, Armin -- ALG
Re: how Get Bitmap file from SVG module?
Hi jianlizhao, it is still not clear to me, what you want to do: Do you want to write macros or extensions and need help to use the API? or Do you want to work on the core itself. If it is this, what do you want to do? What feature do you want to implement or what bug do you want to fix? jianlizhao schrieb: Hi Armin: I ask you some question as below: In module svg, have two Interfaces, one is XSVGPrinter, the other is XSVGWriter. 1) Can I use these interfaces, output Bitmap file? If you will use the API the interface XGraphicRasterizer seems to be the correct one. 2) under the module svg, in the file of svgimagenode.cxx, void extractFromGraphic ( const Graphic rGraphic drawinglayer :: primitive2d :: Primitive2DSequence rEmbedded, basegfx :: B2DRange rViewBox, BitmapEx rBitmapEx) is the parameters rBitmapEx get Bitmap file? As far as I understand it, you have to use methode getDecomposition from XSvgParser and then method rasterize from XPrimitve2DRenderer. But Armin can surely tell it, he had implemented it ;) Kind regards Regina
Re: how Get Bitmap file from SVG module?
Hi jianlizhao, On 23.05.2012 11:06, jianlizhao wrote: Hi Armin: I ask you some question as below: In module svg, have two Interfaces, one is XSVGPrinter, the other is XSVGWriter. Both are interfaces, XSVGPrinter is not used at all and XSVGWriter is the current SVG export which has nothing to do with the new import. There also is no module svg, the module I added for the new SVG import is svgio. 1) Can I use these interfaces, output Bitmap file? No. 2) under the module svg, in the file of svgimagenode.cxx, void extractFromGraphic ( const Graphic rGraphic drawinglayer :: primitive2d :: Primitive2DSequence rEmbedded, basegfx :: B2DRange rViewBox, BitmapEx rBitmapEx) is the parameters rBitmapEx get Bitmap file? I am not sure what you want to do. To work with imported SVGs you need a Graphic (see vcl and GraphicObject, too) where it is loaded. From Graphic you may try const SvgDataPtr getSvgData() const; If getSvgData().is() there is a SVG graphic. At the contained SvgData you can use const BitmapEx getReplacement() const; to get the BitmapEx of the SVG. There is no need to work with stuff from svgio directly. All usages work with it are using the service XSvgParser and do the work for you, where XSvgParser is implemented in svgio. I still do not understand what you want to do, please explain this, else I cannot really help you. Thanks... Best Regards! Sincerely, Armin -- ALG
Re: how Get Bitmap file from SVG module?
Let me try to translate the message below. Hi Armin, I see two interfaces XSVGPrinter and XSVGWriter in svg mdoule Could they be used for graphic in Bitmap format? For function extractFromGraphic in svgimagenode void extractFromGraphic ( const Graphic rGraphic drawinglayer :: primitive2d :: Primitive2DSequence rEmbedded, basegfx :: B2DRange rViewBox, BitmapEx rBitmapEx) What is parameter rBitmapEx work for? On Wed, May 23, 2012 at 5:06 PM, jianlizhao jianlizh...@hotmail.com wrote: Hi Armin: I ask you some question as below: In module svg, have two Interfaces, one is XSVGPrinter, the other is XSVGWriter. 1) Can I use these interfaces, output Bitmap file? 2) under the module svg, in the file of svgimagenode.cxx, void extractFromGraphic ( const Graphic rGraphic drawinglayer :: primitive2d :: Primitive2DSequence rEmbedded, basegfx :: B2DRange rViewBox, BitmapEx rBitmapEx) is the parameters rBitmapEx get Bitmap file? Thanks... Best Regards!
