And if you ever need a fancier font rendering system you can take a look at FontRenderer.cpp (and the associated classes in the font/ directory) here: https://github.com/android/platform_frameworks_base/blob/master/libs/hwui/FontRenderer.cpp
It's the font renderer used by the UI toolkit when running on top of OpenGL. It's all dynamic and doesn't need to generate a separate texture per string. On Mon, May 20, 2013 at 9:10 AM, Latimerius <[email protected]> wrote: > Thanks for using your sixth sense to find out what exactly I was > struggling with. ;-) Now everything works what I need for the initial > batch of tests! > > Come to think about it, one of the collateral benefits of using TextView > for the job seems to be the consistency with the rest of the platform. I > mean, if TextView can render it well, so can our app. If TextView fails to > render it correctly in some way, our app fails in the same way so the > result should at least follow the principle of least surprise. > > Again, thanks a *lot* for your help Romain! > > > On Mon, May 20, 2013 at 2:13 AM, Romain Guy <[email protected]> wrote: > >> It's pretty easy. If you want the text to break, use the MeasureSpec >> AT_MOST X px for the width (where X is the maximum width in pixels you want >> your texture to be) and UNSPECIFIED 0 px for the height. >> >> >> On Sun, May 19, 2013 at 3:39 PM, Latimerius <[email protected]> wrote: >> >>> Thanks a lot Romain. I hoped there would be a way to >>> leverage somehow the standard View machinery. I couldn't find it as >>> admittedly, I'm not very experienced with the standard UI toolkit. >>> >>> >>> On Sun, May 19, 2013 at 9:27 PM, Romain Guy <[email protected]>wrote: >>> >>>> One way to do this is to create a TextView, call measure() then >>>> layout() on it and then call its draw() method to draw into a Bitmap. This >>>> will take care of all the breaking, BiDi, etc. Note that TextView uses the >>>> Paint APIs under the hood to measure text. >>>> >>>> >>>> On Sun, May 19, 2013 at 10:55 AM, Latimerius <[email protected]>wrote: >>>> >>>>> Hello, >>>>> >>>>> I'm looking into localising an OpenGL app into several languages. I'm >>>>> not too worried about short strings like button labels, however the >>>>> welcome >>>>> screen contains a paragraph or two of text and the tutorial has a couple >>>>> of >>>>> 2-3 lines text strings. Currently, they are pre-rendered and distributed >>>>> as PNGs but ideally, they should be rendered on-the-fly to save texture >>>>> space and avoid scaled text. >>>>> >>>>> To achieve that, it seems necessary to handle line breaking properly. >>>>> However, I couldn't find an API in Android to help with that. I'm aware >>>>> of Paint.breakText() but it seems too primitive for the task - it actually >>>>> doesn't seem to handle proper line breaking at all. For Western >>>>> languages, >>>>> it should be mostly fine just to back off to the first space from what >>>>> breakText() returns and break the line there. The problem is how to deal >>>>> with Asian languages (Chinese, Japanese and Korean - also Thai would be >>>>> nice), and later on with RTL languages, too. >>>>> >>>>> Some googling gave me the impression that in general, people like me >>>>> shouldn't try to tackle the problem themselves - it's too complex and >>>>> belongs into an operating system/application framework anyway. >>>>> >>>>> Is there something in Android platform to help turn a paragraph of >>>>> text into a decent PNG of specified dimensions? >>>>> >>>>> Thanks in advance! >>>>> >>>>> -- >>>>> -- >>>>> You received this message because you are subscribed to the Google >>>>> Groups "Android Developers" group. >>>>> To post to this group, send email to >>>>> [email protected] >>>>> To unsubscribe from this group, send email to >>>>> [email protected] >>>>> For more options, visit this group at >>>>> http://groups.google.com/group/android-developers?hl=en >>>>> --- >>>>> You received this message because you are subscribed to the Google >>>>> Groups "Android Developers" group. >>>>> To unsubscribe from this group and stop receiving emails from it, send >>>>> an email to [email protected]. >>>>> For more options, visit https://groups.google.com/groups/opt_out. >>>>> >>>>> >>>>> >>>> >>>> >>>> >>>> -- >>>> Romain Guy >>>> Android framework engineer >>>> [email protected] >>>> >>>> -- >>>> -- >>>> You received this message because you are subscribed to the Google >>>> Groups "Android Developers" group. >>>> To post to this group, send email to >>>> [email protected] >>>> To unsubscribe from this group, send email to >>>> [email protected] >>>> For more options, visit this group at >>>> http://groups.google.com/group/android-developers?hl=en >>>> --- >>>> You received this message because you are subscribed to the Google >>>> Groups "Android Developers" group. >>>> To unsubscribe from this group and stop receiving emails from it, send >>>> an email to [email protected]. >>>> For more options, visit https://groups.google.com/groups/opt_out. >>>> >>>> >>>> >>> >>> -- >>> -- >>> You received this message because you are subscribed to the Google >>> Groups "Android Developers" group. >>> To post to this group, send email to [email protected] >>> To unsubscribe from this group, send email to >>> [email protected] >>> For more options, visit this group at >>> http://groups.google.com/group/android-developers?hl=en >>> --- >>> You received this message because you are subscribed to the Google >>> Groups "Android Developers" group. >>> To unsubscribe from this group and stop receiving emails from it, send >>> an email to [email protected]. >>> For more options, visit https://groups.google.com/groups/opt_out. >>> >>> >>> >> >> >> >> -- >> Romain Guy >> Android framework engineer >> [email protected] >> >> -- >> -- >> You received this message because you are subscribed to the Google >> Groups "Android Developers" group. >> To post to this group, send email to [email protected] >> To unsubscribe from this group, send email to >> [email protected] >> For more options, visit this group at >> http://groups.google.com/group/android-developers?hl=en >> --- >> You received this message because you are subscribed to the Google Groups >> "Android Developers" group. >> To unsubscribe from this group and stop receiving emails from it, send an >> email to [email protected]. >> For more options, visit https://groups.google.com/groups/opt_out. >> >> >> > > -- > -- > You received this message because you are subscribed to the Google > Groups "Android Developers" group. > To post to this group, send email to [email protected] > To unsubscribe from this group, send email to > [email protected] > For more options, visit this group at > http://groups.google.com/group/android-developers?hl=en > --- > You received this message because you are subscribed to the Google Groups > "Android Developers" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to [email protected]. > For more options, visit https://groups.google.com/groups/opt_out. > > > -- Romain Guy Android framework engineer [email protected] -- -- You received this message because you are subscribed to the Google Groups "Android Developers" group. To post to this group, send email to [email protected] To unsubscribe from this group, send email to [email protected] For more options, visit this group at http://groups.google.com/group/android-developers?hl=en --- You received this message because you are subscribed to the Google Groups "Android Developers" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. For more options, visit https://groups.google.com/groups/opt_out.
