Chrom portrait vs landscape11/6/2023 Here, function PrintToPDF takes parameter Landscape whose datatype is bool meaning either true or false. Page_ Lines 302-316 void PageHandler::PrintToPDF(Maybe landscape, With Reference to source code files page_Īnd headless_print_ listed in the Commited link, We can go through following lines of code. So, Is it possible to print in Landscape mode ? The final commit also lists the files modified for the proposed changes. Also, Link Commited shows the final commit of proposed changes to print-settings in codebase, After which On the same page, you can see each and every patch set (Total 19) of what has been changed in the codebase. but not explicitly states about Orientation Settings. Ist point here, states about printing settings like paper size, margin size, etc. To solve the problem, add page_count asģ) Added unit test and browser test for print to pdf. HeadlessPrintManager issues PrintMsg_PrintPages IPC message, which leaves These areġ) Add parameters to printToPDF command, which let the user to specify printing settings like paper size, margin size, etc.Ģ) PrintWebViewHelper::PrintPageInternal and PrintWebViewHelper::RenderPage feed print_preview_context_.total_page_count() to PrintHeaderAndFooter. Now Issue 2829973002 entitled add customized printing setting for headless (Closed) decsribes 3 things to be added to printing settings for headless in the code. That's very true as Chrome DevTools method Page.printToPDF describes all the parameters that can be used and the first parameter that it states is Landscape (Orientation) that is by-default false. We don't intend to provide all the flexibility that DevTools provide through command-line options Now You can see Ist line clearly states that It is likely that this will lead to deprecation (and eventual removal) of -headless mode command line flags such as -print-to-pdf or -screenshot. I think we could provide an example/reference library and application (say, for nodejs) as part of headless chromium. Such a library can implement a default, but more customizable, page load/life cycle that includes common functions such as rendering a pdf/screenshot. I think that we should be aiming for a more library-based approach for headless user environments (e.g. Adding more options won't solve this general misfit. Please consider the more general problem - We don't intend to provide all the flexibility that DevTools provides through command line options: There are various technical reasons why command line options cannot provide the same flexibility (e.g. Just below that following Comment #51 by Project Contributer eseckler, clearly states that print-options=landscape,displayHeaderFooter,printBackground,scale,paperWidth,paperHeight, marginTop,marginBottom,marginLeft,marginRight,pageRanges It's really not just "small wrapper script (in any language with a WebSockets library)" because you have to handle a lot of events during process instead of just invoking a command and wait for it's exit status. Would it really be such trouble to add switch like: In the Issue 603559 entitled Headless Chrome: save page to pdf on ,a user expressed his suggestion to add print-options parameter in comment #50 So, It may not be an exact answer and somehow more can be added to it. Well, Certainly the Question needs more Research and I am writing down what I've found regarding it.
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