* Simplified the subpixel related methods for the AGG "pixel format" template
interface, the ones for the solid cover simply pass through the existing
methods, so only one subpixel blending function is left which does the actual
work (this removes a lot of the previously added code)
* Implemented a new rasterizer based on the original AGG rasterizer which
implements subpixel anti-aliasing for any generic AGG vector pipelines. It
is now optionally used in Painter and AGGTextRenderer (for vector fonts, ie
rotated, sheared or big enough fonts) depending on the global subpixel
setting.
* Put all subpixel variables into the new GlobalSubpixelSettings.h|cpp
* Simplified DesktopSettings related classes a bit and renamed previous
FontSubpixelAntialiasing to just SubpixelAntialiasing.
* The private libbe functions for subpixel related settings moved from Font.cpp
to InterfaceDefs.cpp where other such functions live. They are not related
to fonts only anymore.
* Removed the subpixel related settings again from the Fonts preflet and added
them to the Appearance preflet instead.
All of the above implements subpixel anti-aliasing on a global scale, which
to my knowledge no other OS is doing at the moment. Any vector rendering
can optionally use subpixel anti-aliasing in Haiku now. The bitmap cached fonts
are still affected by the Freetype complile time #define to enable the patented
subpixel rasterization (three times wide glyphs). Vector fonts and shapes are
not affected though at the moment.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@26755 a95241bf-73f2-0310-859d-f6bbb57e9c96
* Integrate the subpixel rendering with the existing drawing backend and
the font rendering.
* The font cache has got an additional rendering type for extracting and
caching glyph bitmaps that store subpixel coverage values.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@26361 a95241bf-73f2-0310-859d-f6bbb57e9c96
* fixed a bug in the font cache, the signature was generated in one way
(rendering type) while the initialization of the font engine could
use another way
* should fix non-antialiased straight text
* weird non-transformed text in FontDemo
* generally not using vector glyphs when it was supposed to use them (rotated
or sheared text, or non-antialiased text)
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@21866 a95241bf-73f2-0310-859d-f6bbb57e9c96
removed font_support folder
* ServerApp can use ServerFont::StringWidth() directly again
* more ServerFont functions implemented via GlyphLayoutEngine and
custom consumer
* extended GlyphCache data structure to hole the left/right insets
of the glyph shape between its advance width, took it from the earlier
ServerFont implementation, have not tested if that gives same result
as R5
* TODO: implement GetGylphShapes via GlyphCache, although it might not
look as clean as it does now
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@21805 a95241bf-73f2-0310-859d-f6bbb57e9c96
* the previous AGG implementation is superfluous
* the new implementation is based on that one, but in a way that allows
read/write locking to the list of cache entries (fonts) as well as
read/write locking to the cached glyphs per individual font cache entry
* new GlyphLayoutEngine.h, which is to be the central place for layouting
glyphs along the baseline.
It handles the locking for getting the font cache entries.
It works by giving it a template class GlyphConsumer which does the
actual work.
* changed AGGTextRenderer to use the new font cache
* changed ServerFont::StringWidth(), and the bounding box stuff to use it
* changed DrawingEngine, it doesn't need the global font lock anymore
* our BFont thought that GetBoundingBoxesAsGlyphs and GetBoundingBoxesAsString
is the same, which of course it isn't, hence the two separate functions...
AsGlyphs just gets the bounding box of each glyph in a string, not treating
the string as an actual word
AsString adds the offset of the glyph in the word to the bounding box
* changed ServerProtocol.h accordingly for the different bounding box meaning
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@21797 a95241bf-73f2-0310-859d-f6bbb57e9c96
