BorlandTalk.com Borland discussion newsgroups   Archives   FAQ   Search   Memberlist   Usergroups   Register   Profile   Log in to check your private messages   Log in  WYSIWYG          BorlandTalk.com Forum Index -> C++ Builder (Graphics) View previous topic :: View next topic   Author Message Ron Sawyer Guest Posted: Wed Oct 06, 2004 1:27 pm    Post subject: WYSIWYG What is the best mapping mode for a WYSIWYG drawing package? Can anyone point me to a tutorial on WYSIWYG drawing? Thanks Back to top Hans Galema Guest Posted: Wed Oct 06, 2004 3:48 pm    Post subject: Re: WYSIWYG Ron Sawyer wrote: Quote: What is the best mapping mode for a WYSIWYG drawing package? Can anyone point me to a tutorial on WYSIWYG drawing? WYDIWYS What you draw is what you see. Now after having drawn something and after having looked at it, maybe then you want to print the result. And then you wonder what you get ? Where is the problem ? Please explain also what you would map and what a drawing package is. Hans. Back to top Ron Sawyer Guest Posted: Wed Oct 06, 2004 8:12 pm    Post subject: Re: WYSIWYG The physical coordinate system for the screen and for printers are vastly different. In order to provide a method of mapping a logical device coordinate system (device independent) to a physical device coordinate systems, MS has provided a set of API calls. SetMapMode allows for the following modes: MM_ANISOTROPIC MM_HIENGLISH MM_HIMETRIC MM_ISOTROPIC MM_LOENGLISH MM_LOMETRIC MM_TEXT MM_TWIPS I will leave it to you to look up their meanings. It is common to use SetWindowExt (and the SetWindowExtEx) and SetViewportExt coupled with SetMapMode in drawing tools to set up a logical coordinate system to allow for easy device independent drawing, and also allow other features like zooming. I originally used ANISOTROPIC and created a coordinate system that mirrored an 8.5X11 page. This worked well, but is of course limited to printing on an 8.5X11 piece of Paper. I am thinking that I may want to use ANISOTROPIC, but mimic TWIPS, since TWIPS are 1/20 of a printer point. That may be how I proceed if no one more knowledgeable than myself shows up to point me to nice tutorial. "Hans Galema" <dontusethis (AT) dontusethis (DOT) nl> wrote Quote: Ron Sawyer wrote: What is the best mapping mode for a WYSIWYG drawing package? Can anyone point me to a tutorial on WYSIWYG drawing? WYDIWYS What you draw is what you see. Now after having drawn something and after having looked at it, maybe then you want to print the result. And then you wonder what you get ? Where is the problem ? Please explain also what you would map and what a drawing package is. Hans. Back to top Hans Galema Guest Posted: Thu Oct 07, 2004 1:20 pm    Post subject: Re: WYSIWYG Ron Sawyer wrote: Quote: The physical coordinate system for the screen and for printers are vastly different. If that is the case, then when does it matter ? If you use TCanvas and TPrinter::Canvas you can draw in the same way. Resolution and available fonts can/will differ. You can also draw to one canvas and finally copy it to another and also resize it. Quote: In order to provide a method of mapping a logical device coordinate system (device independent) to a physical device coordinate systems, MS has provided a set of API calls. SetMapMode allows for the following modes: MM_ANISOTROPIC MM_HIENGLISH MM_HIMETRIC MM_ISOTROPIC MM_LOENGLISH MM_LOMETRIC MM_TEXT MM_TWIPS I will leave it to you to look up their meanings. That was not a good idea. I did not do that. Quote: It is common to use SetWindowExt (and the SetWindowExtEx) and SetViewportExt coupled with SetMapMode in drawing tools to set up a logical coordinate system to allow for easy device independent drawing, and also allow other features like zooming. You know more of that then I do. But have a look at drawing at TCanvas, as it makes coding easy. I think that what you want depends also of the way you bring your drawings to a printer. Quote: I originally used ANISOTROPIC and created a coordinate system that mirrored an 8.5X11 page. This worked well, but is of course limited to printing on an 8.5X11 piece of Paper. But if these dimensions are fixed then I would start to make them adjustable. Quote: I am thinking that I may want to use ANISOTROPIC, but mimic TWIPS, since TWIPS are 1/20 of a printer point. That may be how I proceed if no one more knowledgeable than myself shows up to point me to nice tutorial. I wonder where you need a tutorial for. It seems to me that you are a pro. Isn't the help enough ? Would it make your code different if you changed from MM_ANISOTROPIC to MM_TWIPS ? If not then you can easily test all the available mappingmodes. Hans. 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