python - Putting .SVG images into tkinter Frame

Question

I have been trying to put the image from https://betacssjs.chesscomfiles.com/bundles/web/favicons/safari-pinned-tab.f387b3f2.svg into a Tkinter frame. I found from the post here that it is possible with the help from rsvg and cairo.

I was using python 3.6 on Windows 10. I got rsvg from here and cairo from here and then extracted the folders to the 'C:Users...site_packages' folder. They import fine but I cannot figure out how to use them. I tried using the code:

import tkinter as tk
main=tk.Tk()
frame=tk.Frame(main)
def svgPhotoImage(self,file_path_name):
        from PIL import Image,ImageTk
        import rsvg,cairo 
        svg = rsvg.Handle(file=file_path_name)
        width, height = svg.get_dimension_data()[:2]
            surface = cairo.ImageSurface(cairo.FORMAT_ARGB32, int(width), int(height))
            context = cairo.Context(surface)
            #context.set_antialias(cairo.ANTIALIAS_SUBPIXEL)
            svg.render_cairo(context)
            tk_image=ImageTk.PhotoImage('RGBA')
            image=Image.frombuffer('RGBA',(width,height),surface.get_data(),'raw','BGRA',0,1)
            tk_image.paste(image)
            return(tk_image)
    tk_image=self.svgPhotoImage(filename)
    frame.configure(image=tk_image)

and

#rsvg.py
import os
try:
    import rsvg
    WINDOWS=False
except ImportError:
    print"Warning, could not import 'rsvg'"
    if os.name == 'nt':
        print "Detected windows, creating rsvg."
        #some workarounds for windows

        from ctypes import *

        l=CDLL('librsvg-2-2.dll')
        g=CDLL('libgobject-2.0-0.dll')
        g.g_type_init()

        class rsvgHandle():
            class RsvgDimensionData(Structure):
                _fields_ = [("width", c_int),
                            ("height", c_int),
                            ("em",c_double),
                            ("ex",c_double)]

            class PycairoContext(Structure):
                _fields_ = [("PyObject_HEAD", c_byte * object.__basicsize__),
                            ("ctx", c_void_p),
                            ("base", c_void_p)]

            def __init__(self, path):
                self.path = path
                error = ''
                self.handle = l.rsvg_handle_new_from_file(self.path,error)


            def get_dimension_data(self):
                svgDim = self.RsvgDimensionData()
                l.rsvg_handle_get_dimensions(self.handle,byref(svgDim))
                return (svgDim.width,svgDim.height)

            def render_cairo(self, ctx):
                ctx.save()
                z = self.PycairoContext.from_address(id(ctx))
                l.rsvg_handle_render_cairo(self.handle, z.ctx)
                ctx.restore()



        class rsvgClass():
            def Handle(self,file):
                return rsvgHandle(file)

        rsvg = rsvgClass()).
h = rsvg.Handle("box.svg")
s = cairo.ImageSurface(cairo.FORMAT_ARGB32, 100, 100)
ctx = cairo.Context(s)
h.render_cairo(ctx)

After trying those scripts, I kept getting the error message:

AttributeError: module 'rsvg' has no attribute 'Handle'

I am sure I did something wrong in the process but after hours of searching still could not figure out how to get it to work. I also tried installing pycairo (via pip) but got the error message

ERROR: Command "'c:...python36-32python.exe' -u -c 'import setuptools, tokenize;__file__='"'"'C:\...\pip-install-peqhj3x1\pycairo\setup.py'"'"';f=getattr(tokenize, '"'"'open'"'"', open)(__file__);code=f.read().replace('"'"'
'"'"', '"'"'
'"'"');f.close();exec(compile(code, __file__, '"'"'exec'"'"'))' install --record 'C:...Temppip-record-jfozfbucinstall-record.txt' --single-version-externally-managed --compile" failed with error code 1 in C:...pip-install-peqhj3x1pycairo

I have no clue as to what to do now

EDIT: I was finally able to obtain pycairo from https://www.lfd.uci.edu/~gohlke/pythonlibs/ and now have it working. I finally got rsvg to not give me the error message above by referring here and got the nessary DLL files from here. Cairo is working fine but RSVG is creating a blank screen. I tried another 7-liner here and get the output of a blank file instead of a converted one. Evidently RSVG is not working and I think it is an installation issue (eg. incorrect .dll's). Help?

If am trying to use cairo and rsvg because they take up little space and are really fast; wand or some other library is not an option. I just want to be able to put an SVG file into a tkinter frame. If anyone knows how install rsvg properly, I'd appreciate knowing.

Any help would be hugely appreciated. Thank you for any suggestions.

Answer 1

I've managed to do it using svglib:

from svglib.svglib import svg2rlg
from reportlab.graphics import renderPDF, renderPM

drawing = svg2rlg("safari-pinned-tab.f387b3f2.svg")
renderPM.drawToFile(drawing, "temp.png", fmt="PNG")


from tkinter import *

tk = Tk()


from PIL import Image, ImageTk

img = Image.open('temp.png')
pimg = ImageTk.PhotoImage(img)
size = img.size


frame = Canvas(tk, width=size[0], height=size[1])
frame.pack()
frame.create_image(0,0,anchor='nw',image=pimg)

tk.mainloop()