cairo

问题 How do I render a string with pango using custom antialiasing and hinting settings? I tried PangoCairo.set_antialias(cairo.ANTIALIAS_NONE) (in pygtk), but it had no effect. I'd like to be able to change freetype's rendering parameters, like I can do via fontconfig/ fonts.conf , but at runtime. (This is on Linux.) Any ideas? 回答1: Well, I'm not sure if understood you right, but I usually use cairo_set_antialias () in my C-code, though I don't know an equivalent in PyGTK. As far as I understand

问题 I'm trying to distribute cairo (1.10.2) with my application. I can create the necessarily dylibs using Homebrew but they are dependent on versions of other dynamic libraries that aren't present in OS X 10.5 (libfontconfig, libfreetype, and others located primarily in /usr/X11/lib ). I assume to solve this I want it to be using the dylibs in /Developer/SDKs/MacOSX10.5.sdk/usr/X11/lib rather than the libraries in /usr/X11/lib . I've tried anything I could find for targeting cairo against the 10

问题 There are many advantages to using Cairo to save R graphics (see here, for example). When saving PDFs, for instance, the cairo_pdf device correctly embeds custom fonts. Using the cairo_pdf graphics device is easy with ggplot-based graphics with ggsave() : library(ggplot2) ugly_plot <- ggplot(mtcars, aes(x = wt, y = mpg)) + geom_point() + labs(title = "Some data about cars") + theme_gray(base_family = "Papyrus") ugly_plot ggsave(ugly_plot, filename = "ugly_plot.pdf", width = 4, height = 2.5,

问题 Pango syntax supports some text only markup. As far as i can see this does not extend to embedding images as well. Looking around I cannot find much in the way of an existing implementation, but i havent done pango+cairo work before so i might be missing the obvious community for it. As far as i can tell a reasonable approach would be to just analyse a string, pull out any tags, create cairo images, and then modify the pango layout around them accordingly. It also seems like something someone

问题 Pango syntax supports some text only markup. As far as i can see this does not extend to embedding images as well. Looking around I cannot find much in the way of an existing implementation, but i havent done pango+cairo work before so i might be missing the obvious community for it. As far as i can tell a reasonable approach would be to just analyse a string, pull out any tags, create cairo images, and then modify the pango layout around them accordingly. It also seems like something someone

问题 I installed R on an OSX 10.7.5 server using brew: brew install R Everything seems so OK far, however Cairo is not working: > svg(tempfile()) Warning messages: 1: In svg(tempfile()) : unable to load shared object '/usr/local/Cellar/r/2.15.2/R.framework/Resources/library/grDevices/libs//cairo.so': dlopen(/usr/local/Cellar/r/2.15.2/R.framework/Resources/library/grDevices/libs//cairo.so, 6): image not found 2: In svg(tempfile()) : failed to load cairo DLL The shared object file seems to be

问题 I am trying to install Cairo for Python 2.7 in windows. I have installed igraph. There are binaries for this system on Christoph's site. I have downloaded the appropriate binary. How do I use pip to install the Cairo binary. 回答1: I worked on it and figured it out. Here are detailed instructions. They will work (with appropriate modifications for any binary Python package: Installing Cairo in Python for Windows. Go to site http://www.lfd.uci.edu, Chrisoph Gohlke’s site Download the appropriate

问题 When a python module is installed successfully but fails to import in python (via PyCharm IDE), what could be the issue? What checklist should I follow to diagnose the problem in this case and in the future when a module installs but later fails to import? For this specific case, I installed a vector graphics module for Python called cairo . http://cairographics.org/releases/pycairo-1.8.8.tar.gz See the successful install below: sudo python setup.py install cairo >= 1.8.8 detected creating

问题 The command line version of cairosvg allows scaling. Here is the output of the help function: cairosvg -h usage: cairosvg [-h] [-v] [-f {pdf,png,ps,svg}] [-d DPI] [-W WIDTH] [-H HEIGHT] [-s SCALE] [-u] [-o OUTPUT] input CairoSVG - A simple SVG converter based on Cairo. positional arguments: input input filename or URL optional arguments: -h, --help show this help message and exit -v, --version show program\'s version number and exit -f {pdf,png,ps,svg}, --format {pdf,png,ps,svg} output format

问题 Why is it so effin' hard? Seems to be an ever-present issue..solved unclearly. Searched on multiple github pages, advised to use import cairocffi as cairo instead, not working for me. Some more on Stackoverflow, to add sys.path.insert(0, "//anaconda/pkgs/cairo-1.14.10-0") or something. But in fact, sys.path returns the directory anyway. Quite sure installation done correctly as I can see under conda list . Bad feeling this is gonna take a whole lot longer due to my little understanding of the