| Re: [platform-swt-dev] TextLayout and GC advanced graphics on Windows (GDI+) buggy? |
I dead here long time:) 致敬 向雅 2012/7/17 Stephan Aßmus <superstippi@xxxxxx>: > Hi, > > > On 16.07.2012 21:20, 向雅 wrote: >> >> The eclipse list not other kind of list:) the guys will tell you in >> wrong topos, the right room is newsgroup.(Wawu I not read news so >> long) > > > The last couple of times people asked questions here, they most often got > some help... Maybe you "Face Big"(Chinan saying: seems no direct translation for English, almost: do a favor, do a honor) > >> Maybe it's answer: >> 1)recompute the bounding according to zoom parameter and >> resize of canvas, meanwhile >> 2)reevaluate the font size in favor of zoom parameter, then modify >> style attribute objects, at last, >> 3)repaint OK. > > > My current work around / new strategy is to copy and "scale" the > SpacedTextLayouts immediately before they are used for painting. That limits > the overhead to just what's visible on the screen. Seems you do right:) Comparison with the ScaledGraphics zoomTextout maybe a worth. I attached it for hand. The zoom TextLayout in last part of code. > >> BTW: >> 1)Draw2D scaledgraphics.(zoom) method maybe help. > > > Draw2D (org.eclipse.draw2d ?) did come up several times in my searches for > the problem, but it seems to be implemented on top of an SWT GC, so it Do > wouldn't help I guess. What's more, the method to draw a TextLayout was > unimplemented, at least in the version of the code I saw on the web. I not know your result, maybe different version? The ScaledGraphics just a reference. There is a new Git repos. Indeed, Draw2D have another text render, seems stop long, but really different method. >> 2)You familiar with AGG, so maybe JNI AGG render and just blit result >> image to backend buffer, maybe a idea(not so bad:). > > > Believe me, writing my own AGG based text rendering engine (respectively > modifying/using the ones I wrote before) and using it via JNI has crossed my > mind more than once. The SWT text rendering capabilities are really pretty > limited for advanced stuff. I posted about some limitations here before... > > Up until now, I was able to avoid it. But it is planned already for various > reasons. > Really good news! Seems java really need a browser mode. I guess you saw the new JavaFX, dummy thing. I wanna continue the talk but seems to far away, maybe on other list:) > > Best regards, > -Stephan > _______________________________________________ > platform-swt-dev mailing list > platform-swt-dev@xxxxxxxxxxx > https://dev.eclipse.org/mailman/listinfo/platform-swt-dev
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