Re: [JAVA2D] GlyphVectors
For text display issues where you are using using the Graphic2D class and TextLayout and GlyphVector this is the right place. But there is a Java Internationalization forum http://forum.java.sun.com/forum.jspa?forumID=16 which may be a more appropriate forum for other text processing questions -phil. Peter B. West wrote: Is this the right place to ask questions concerning GlyphVectors and other text-processing components which may overlap with I18N? Peter === To unsubscribe, send email to [EMAIL PROTECTED] and include in the body of the message "signoff JAVA2D-INTEREST". For general help, send email to [EMAIL PROTECTED] and include in the body of the message "help". === To unsubscribe, send email to [EMAIL PROTECTED] and include in the body of the message "signoff JAVA2D-INTEREST". For general help, send email to [EMAIL PROTECTED] and include in the body of the message "help".
[JAVA2D] GlyphVectors
Is this the right place to ask questions concerning GlyphVectors and other text-processing components which may overlap with I18N? Peter === To unsubscribe, send email to [EMAIL PROTECTED] and include in the body of the message "signoff JAVA2D-INTEREST". For general help, send email to [EMAIL PROTECTED] and include in the body of the message "help".
Re: [JAVA2D] GlyphVectors and rendering text in multiple fonts fast
En réponse à Sampsa Mikael Sojakka <[EMAIL PROTECTED]>: I am also working on a program which need complex custom layout of text. (Desktop Publishing). I currently use a class which cache a glyphvector (per glyph!) and its basic fontmetrics. The creation of the glyphvector is pretty slow but the rendering is fast enough to type while displaying 2000 glyphs. (faster than drawstring() anyway). Emmanuel. And drawing this Glyphvector > using the Graphics2D method drawGlyphVector() is very slow. > Hi, > > I am currently in the process of writing a light HTML renderer. In > order > to accomplish this I obviously need to support custom layout of text > rendered in multiple Fonts and varying sizes. > > My original idea was to use the Flyweight design pattern of caching > glyphs and using references to these glyphs during the layout and > positioning of the characters in the text. Unfortunately the Java API > does not allow me to access individual Glyph objects. Instead, I can > use > createGlyphVector() in java.awt.Font to get a GlyphVector that > encompasses the glyphs. The problem is that drawing this Glyphvector > using the Graphics2D method drawGlyphVector() is very slow. In fact it > is so slow that it is hard to imagine any practical use for this > method > at all. This is bewildering since the Java API documentation claims > that > a GlyphVector "is the fastest method to present the visual > representation of characters to a user". > > I have also experimented with the standard drawString() method which > achieves acceptable performance iff no bound calculations are > performed. > Unfortunately I need these bound calculations in order to handle the > custom layout management of text in various fonts... > > So the question is: > Does anyone know of a fast way of rendering styled text in Java? How > do > the classes in javax.swing.text and javax.swing.text.html handle this? > Should I cache bound calculations for individual rendered characters > or > is there a better way I'm not seeing? > > > Cheers, > > Sampsa Sojakka === To unsubscribe, send email to [EMAIL PROTECTED] and include in the body of the message "signoff JAVA2D-INTEREST". For general help, send email to [EMAIL PROTECTED] and include in the body of the message "help".
[JAVA2D] GlyphVectors and rendering text in multiple fonts fast
Hi, I am currently in the process of writing a light HTML renderer. In order to accomplish this I obviously need to support custom layout of text rendered in multiple Fonts and varying sizes. My original idea was to use the Flyweight design pattern of caching glyphs and using references to these glyphs during the layout and positioning of the characters in the text. Unfortunately the Java API does not allow me to access individual Glyph objects. Instead, I can use createGlyphVector() in java.awt.Font to get a GlyphVector that encompasses the glyphs. The problem is that drawing this Glyphvector using the Graphics2D method drawGlyphVector() is very slow. In fact it is so slow that it is hard to imagine any practical use for this method at all. This is bewildering since the Java API documentation claims that a GlyphVector "is the fastest method to present the visual representation of characters to a user". I have also experimented with the standard drawString() method which achieves acceptable performance iff no bound calculations are performed. Unfortunately I need these bound calculations in order to handle the custom layout management of text in various fonts... So the question is: Does anyone know of a fast way of rendering styled text in Java? How do the classes in javax.swing.text and javax.swing.text.html handle this? Should I cache bound calculations for individual rendered characters or is there a better way I'm not seeing? Cheers, Sampsa Sojakka 2nd year Computer Science University of Sussex === To unsubscribe, send email to [EMAIL PROTECTED] and include in the body of the message "signoff JAVA2D-INTEREST". For general help, send email to [EMAIL PROTECTED] and include in the body of the message "help".
