When I install via pip, I get the wheels published on PyPi. Example:

skia_python-87.1-cp39-cp39-macosx_10_14_x86_64.whl

However, they don't work :-( Erroring out on import with:

ImportError: dlopen(/Library/Frameworks/Python.framework/Versions/3.9/lib/python3.9/site-packages/skia.cpython-39-darwin.so, 2): Symbol not found: _XML_ErrorString
  Referenced from: /Library/Frameworks/Python.framework/Versions/3.9/lib/python3.9/site-packages/skia.cpython-39-darwin.so
  Expected in: flat namespace
 in /Library/Frameworks/Python.framework/Versions/3.9/lib/python3.9/site-packages/skia.cpython-39-darwin.so

Tested under the Python.org 3.9 installer, and conda-forge 3.8 and 3.9 -- same results on all three.

It seems that it's looking for the _XML_ErrorString symbol from expat, which is bundled with Python:

$ python -c "import xml.parsers.expat; print xml.parsers.expat.__version__"
$Revision: 17640 $

I'm totally guessing but I think it might be the "flat namespace" issue. The symbol is there in the extension:

$ grep "_XML_ErrorString" /Library/Frameworks/Python.framework/Versions/3.9/lib/python3.9/lib-dynload/pyexpat.cpython-39-darwin.so 
Binary file /Library/Frameworks/Python.framework/Versions/3.9/lib/python3.9/lib-dynload/pyexpat.cpython-39-darwin.so matches

Sorry -- I've reached the end of what I know about these issues.

Describe the bug Example in docs raises exception

To Reproduce Steps to reproduce the behavior:

1. pip install skia-python==86.0 glfw==1.12.0
2. run example from tutorial: https://kyamagu.github.io/skia-python/tutorial/canvas.html#gpu
3. Get error:

AttributeError: type object 'skia.GrContext' has no attribute 'MakeGL'

Expected behavior Working example in documentation

Desktop (please complete the following information):

• OS: Linux
• Python: 3.8
• skia-python version: 86.0

Describe the bug As described in the title, when building docker image on Apple M1, I get the error above. I'm using python:3.10.2 image, but got the same error with ubuntu:18.04 image

To Reproduce Steps to reproduce the behavior:

1. Run docker build and try installing skia-python

Expected behavior Build success

Desktop (please complete the following information):

• OS: macOS 12.2
• Python: 3.10.2
• skia-python version: v87.4

Additional context I tried: apt-get install libfontconfig1 libgl1-mesa-glx libgl1-mesa-dri but it did not help.

Thank you! :)

I am trying to use this brilliant package to make some functions/classes easier to use this package. I have one major issue and after reading the docs I can't seem to find the right solution. I'm looking to make a function that generates a scene to write to.. Something like this:

import skia
from IPython.display import display, Image

def init_scene(x,y):
    surface = skia.Surface(x, y)
    with surface as canvas:
        canvas.clear(skia.ColorWHITE)

def draw_cube_to_scene():
    rect = skia.Rect.MakeXYWH(-90.5, -90.5, 181.0, 181.0)
    paint = skia.Paint()
    paint.setColor(skia.ColorBLUE)
    canvas.drawRect(rect, paint)
    canvas.restore()
    image = surface.makeImageSnapshot()
    display(Image(data=image.encodeToData()))

init_scene(500,200)
draw_cube_to_scene()

results in: ERROR name 'canvas' is not defined

For the example to work the surface and canvas cannot be locally in a function/class. So this works:

import skia
from IPython.display import display, Image

surface = skia.Surface(500, 200)
with surface as canvas:
    canvas.clear(skia.ColorWHITE)

def draw_cube_to_scene():
    rect = skia.Rect.MakeXYWH(-90.5, -90.5, 181.0, 181.0)
    paint = skia.Paint()
    paint.setColor(skia.ColorBLUE)
    canvas.drawRect(rect, paint)
    canvas.restore()
    image = surface.makeImageSnapshot()
    display(Image(data=image.encodeToData()))

draw_cube_to_scene()

Results in a nice cube

But now the user cannot create a new scene with custom size of graphics. Do you know it is possible to do the first example? I would love your help.

Describe the bug NumPy array conversion to, e.g., Image silently accepts array with types other than uint8.

To Reproduce

import skia
import numpy as np

array = np.zeros((100, 100), dtype=np.float32)
image = skia.Image(array)

Expected behavior Should throw an error.

Desktop (please complete the following information):

• OS: macOS 10.15.4
• Architecture x86_64
• Python 3.7
• skia-python version v0.0.4

Additional context n/a

Is it possible to draw an image on a "canvas.drawRect" object?

I know you can do

paint = skia.Paint(
    AntiAlias=True,
    Color=color,
    Style=skia.Paint.kFill_Style,
    )
canvas.drawRect(skia.Rect.MakeXYWH(x,y, width, height), paint)

Is there a commad in paint that allwos to load an image and display it on a rectangle?

Describe the bug Windows CI build fails

To Reproduce Launch build in Github Actions windows runner

Expected behavior Build should succeed.

Desktop (please complete the following information):

• OS: macOS 10.15.6
• Python: n/a
• skia-python version: v85.0

Additional context See https://skia.googlesource.com/skia/+/0d6f81593b1fa222e8e4afb56cc961ce8c9be375

https://docs.microsoft.com/en-us/visualstudio/releases/2019/release-notes#16.7.0 https://github.com/microsoft/STL/wiki/Changelog#vs-2019-167

I have been trying to output the skia drawing on glfw window. This is the code I have (not working):

import skia
import glfw
import contextlib
import time

width, height = 200, 200

if not glfw.init():
    raise RuntimeError('glfw.init() failed')

#glfw.window_hint(glfw.VISIBLE, glfw.FALSE)
glfw.window_hint(glfw.STENCIL_BITS, 8)
window = glfw.create_window(640, 480, 'Processing', None, None)
glfw.make_context_current(window)

context = skia.GrContext.MakeGL()
info = skia.ImageInfo.MakeN32Premul(width, height)
surface = skia.Surface.MakeRenderTarget(context, skia.Budgeted.kNo, info)
canvas = surface.getCanvas()
canvas.drawCircle(100, 100, 40, skia.Paint(Color=skia.ColorGREEN))

# Loop until the user closes the window
while not glfw.window_should_close(window):
    # Render here, e.g. using pyOpenGL

    # Swap front and back buffers
    glfw.swap_buffers(window)

    # Poll for and process events
    glfw.poll_events()

glfw.terminate()

Is there anything that can be done to make this work?

Is your feature request related to a problem? Please describe. I'm a beginner at Python and have been looking as Skia recently and wanted to use some of it's unique features. This is the first(only?) python library that seems to be complete that i found. Could you please add some examples of interaction or exchange of information with Pillow and Wand. And also saving or reading from files. ie eliminate use of ipython calls.

Describe the solution you'd like Examples

• Read from file.
• Add skia content.
• Do Pillow / Wand content to 'canvas'
• Add skia content.
• Save to a file(skia)

Describe alternatives you've considered Could not get the Ipython package working on my system so was a bit lost of how to use skia-python. it does appear to work but can't show or display or save to file.

Describe the bug skia-python can't be installed using python 3.10 and pip

To Reproduce Steps to reproduce the behavior:

1. Install Python 3.10
2. python -m pip install skia-python

Expected behavior skia-python is installed

Actual behavior ERROR: Could not find a version that satisfies the requirement skia-python (from versions: none)

Desktop (please complete the following information):

• OS: Windows 11 21H2
• Python: 3.10.0
• skia-python version: n/a

Additional context In the same environment (hardware and OS) installation with pip on python 3.9 works fine. I believe the issue is that 3.10 is not in the list of supported versions (although I couldn't find the list itself).

Im trying to make a triangle. Seems like the best way to do this is with drawVertices. However, I can't get this to work and there are not any examples. I would love your input on this.

import skia
from IPython.display import display
surface = skia.Surface(256, 256)

with surface as canvas:
    color = skia.ColorSetRGB(0, 0, 0)

    paint = skia.Paint(Color=skia.Color(0, 0, 255))

    p1 = skia.Point(0, 0)
    p2 = skia.Point(100, 0.0)
    p3 = skia.Point(50, 100)

    test = skia.Vertices([p1,p2,p3])
    Canvas.drawVertices(test,paint)

image = surface.makeImageSnapshot()
display(image)

I get the error

TypeError: __init__(): incompatible constructor arguments. The following argument types are supported:
    1. skia.Vertices(mode: skia.Vertices.VertexMode, positions: List[skia.Point], texs: object = None, colors: object = None, indices: object = None)

Invoked with: [Point(0, 0), Point(100, 0), Point(50, 100)]

Describe the bug I installed glfw, pyopengl, and the mesa glx and mesa dri packages etc. But no example from the documentation runs. I always get:

AttributeError: type object 'skia.GrContext' has no attribute 'MakeGL'

Desktop (please complete the following information):

• OS: Ubuntu 22.10
• Python: 3.10.7
• skia-python version: 87.5

The bindings weren't touched for some time. I've updated these to the latest version. Two major things changed in the API:

• SamplingOptions
• YUV-API

I'm compiling these bindings by myself. I mean, this merge request does not contain "clean code" (please don't just merge it). but could be the basis for the next version. Using it here already: https://github.com/0lru/p3ui with d3d12 (d3d12 is also the reason for the update)

I'm working on my project to create patterns from svg code, but I have problem. It turns out that documentation doesn't provide explanation why SVGDOM is returning none. Anyway, I provide simple code that I'm working, just a note if I use simple svg code of shape or something, then it's working but when I use code from inkscape or something else, this happens.

I got this error...

width, height = svg.containerSize()
AttributeError: 'NoneType' object has no attribute 'containerSize'

And this is code....

import io
import skia
from PIL import Image


def image_from_svg(svg, element_size):
    stream = skia.MemoryStream()
    stream.setMemory(bytes(svg, 'UTF-8'))
    svg = skia.SVGDOM.MakeFromStream(stream)
    width, height = svg.containerSize()
    surface = skia.Surface(element_size, element_size)
    with surface as canvas:
        canvas.scale(element_size / width, element_size / height)
        svg.render(canvas)
    return surface.makeImageSnapshot()


def pattern_image_with_title(image_element, width, height, rotation):
    surface = skia.Surface(width, height)
    with surface as canvas:
        pattern(canvas, image_element, rotation)
    return surface.makeImageSnapshot()


def pattern(canvas, image_element, rotation):
    matrix = skia.Matrix()
    matrix.preRotate(rotation)
    canvas.drawPaint({
        'Shader': image_element.makeShader(
            skia.TileMode.kRepeat,
            skia.TileMode.kRepeat,
            matrix,
        )
    })


def write_png(file_name, skia_image):
    with io.BytesIO(skia_image.encodeToData()) as f:
        pil_image = Image.open(f)
        pil_image.save(file_name, 'PNG')


def write_jpeg(file_name, skia_image, background):
    with io.BytesIO(skia_image.encodeToData()) as f:
        pil_image = Image.open(f)
        new_image = Image.new("RGBA", pil_image.size, background)
        new_image.paste(pil_image, (0, 0), pil_image)
        new_image = new_image.convert('RGB')
        new_image.save(file_name, 'JPEG')

svg_code = """<svg
   width="210mm"
   height="297mm"
   viewBox="0 0 210 297"
   version="1.1"
   id="svg5"
   inkscape:version="1.2.1 (9c6d41e410, 2022-07-14)"
   sodipodi:docname="signiture.svg"
   xmlns:inkscape="http://www.inkscape.org/namespaces/inkscape"
   xmlns:sodipodi="http://sodipodi.sourceforge.net/DTD/sodipodi-0.dtd"
   xmlns="http://www.w3.org/2000/svg"
   xmlns:svg="http://www.w3.org/2000/svg">
  <sodipodi:namedview
     id="namedview7"
     pagecolor="#ffffff"
     bordercolor="#000000"
     borderopacity="0.25"
     inkscape:showpageshadow="2"
     inkscape:pageopacity="0.0"
     inkscape:pagecheckerboard="0"
     inkscape:deskcolor="#d1d1d1"
     inkscape:document-units="mm"
     showgrid="false"
     inkscape:zoom="0.67150344"
     inkscape:cx="276.24579"
     inkscape:cy="612.80401"
     inkscape:window-width="1366"
     inkscape:window-height="714"
     inkscape:window-x="0"
     inkscape:window-y="26"
     inkscape:window-maximized="1"
     inkscape:current-layer="layer1" />
  <defs
     id="defs2" />
  <g
     inkscape:label="Layer 1"
     inkscape:groupmode="layer"
     id="layer1">
    <path
       style="fill:#1a1a1a;stroke-width:0.264583"
       id="path1639"
       d="m 31.809965,176.45394 c 4.616897,-6.47799 10.696953,-11.76612 16.434704,-17.21024 2.32147,-2.17247 4.657291,-4.3297 6.96441,-6.5174 4.422794,-4.19388 9.225095,-8.84396 13.510578,-13.18857 5.541907,-5.61837 10.894594,-11.41832 16.244284,-17.21827 5.878605,-6.39375 11.41064,-13.09435 17.286379,-19.49 7.9e-4,-8e-4 1.49749,-1.6475 1.86882,-1.88108 0.0452,-0.0285 0.13405,0.15652 0.0847,0.1361 -1.54823,-0.64018 -2.94082,-1.843086 -4.608189,-2.006537 -0.583813,-0.05723 -0.647374,0.978647 -0.985205,1.458217 -0.540179,0.7668 -1.099005,1.5203 -1.648507,2.28045 -6.860855,9.48903 -13.083077,19.42316 -19.157191,29.42778 -4.661252,7.98334 -9.410597,15.97956 -13.030848,24.5082 -0.47711,1.12399 -0.882362,2.27714 -1.323541,3.41571 -0.326395,1.3637 -1.130361,3.70695 -0.67786,5.23824 0.789054,2.6702 6.304534,4.14811 7.398258,4.40635 1.557801,0.3678 5.871385,-1.50104 6.999713,-1.91874 3.908473,-1.81884 7.529986,-4.15701 10.852828,-6.89715 2.576761,-2.1249 4.881462,-4.51696 7.14924,-6.95836 0.492014,-0.59089 0.99728,-1.17099 1.476039,-1.77268 1.957279,-2.45984 1.802767,-2.79309 -3.657399,-3.99345 -0.491668,-0.10809 -0.754298,0.66792 -1.108821,1.02531 -0.506468,0.51057 -0.98165,1.05124 -1.472473,1.57687 -1.689245,1.94205 -3.298714,3.97143 -4.563602,6.22201 -0.64757,1.15221 -1.326615,2.56097 -1.586227,3.88258 -0.104384,0.53138 -0.06634,1.08104 -0.09951,1.62156 0.548235,1.29974 0.384257,1.54132 1.814084,2.19424 1.961539,0.89572 3.898805,1.936 6.001126,2.4158 0.889793,0.20307 1.813189,-0.23135 2.704187,-0.42907 2.382729,-0.52873 4.278013,-1.24651 6.592228,-2.03255 1.09511,-0.40816 2.19022,-0.81632 3.28533,-1.22447 0.99805,-0.38293 1.9933,-0.77323 2.99414,-1.14877 2.07703,-0.77936 4.18823,-1.65791 6.45593,-1.5819 0.46601,0.0156 0.92175,0.14151 1.38263,0.21227 1.63634,0.46682 2.99244,1.56309 4.6815,1.88325 1.37931,0.26145 1.96422,0.14023 3.37105,0.063 2.13245,-0.19548 4.14523,-1.12557 6.30942,-1.02887 1.12305,0.0502 1.5525,0.23982 2.63057,0.54422 3.3094,1.25515 6.80164,1.84817 10.253,2.56228 2.71003,0.60416 5.3216,1.55825 7.9868,2.32444 2.16133,0.67927 4.39795,0.9199 6.65303,0.88665 1.76813,-0.15363 0.87576,-0.0592 2.67684,-0.28551 0,0 -3.80996,-2.70129 -3.80996,-2.70129 v 0 c -1.80154,0.19255 -0.90788,0.12187 -2.68074,0.21497 -2.22552,-0.0398 -4.42898,-0.31524 -6.56157,-0.98257 -2.63537,-0.76453 -5.22722,-1.69699 -7.92491,-2.22909 -3.4823,-0.6829 -6.96276,-1.38037 -10.29774,-2.62792 -1.16194,-0.27413 -1.52184,-0.43413 -2.71669,-0.42457 -2.13083,0.0171 -4.11058,0.96255 -6.23338,1.06674 -1.47927,0.0168 -1.90572,0.11961 -3.33568,-0.2385 -1.65765,-0.41514 -3.04523,-1.53183 -4.74725,-1.81127 -0.45928,-0.0296 -0.91814,-0.11095 -1.37783,-0.0887 -2.19763,0.10649 -4.22928,1.07672 -6.22944,1.88527 -4.068117,1.64451 -1.86991,0.78791 -6.186038,2.40769 -2.49709,0.7999 -4.125296,1.42675 -6.707468,1.85107 -0.919181,0.15106 -2.448687,-0.62758 -2.784081,0.24145 -0.329668,0.8542 1.550676,1.11554 1.940653,1.94395 0.381013,0.80936 -2.922603,-1.68871 -2.029542,-1.75585 -0.0083,-0.51809 -0.09355,-1.04067 -0.02498,-1.55427 0.488067,-3.65554 3.58516,-7.32509 5.984394,-9.93393 0.528973,-0.48145 1.028395,-0.99753 1.586923,-1.44436 0.37021,-0.29617 1.458388,-0.38648 1.19077,-0.77783 -0.843732,-1.23382 -2.31286,-1.90595 -3.574335,-2.70775 -0.13208,-0.0839 0.101528,0.31957 0.04887,0.46695 -0.367525,1.02861 -1.421326,2.26467 -2.001814,3.04851 -1.659633,1.9314 -2.229075,2.66959 -4.10882,4.51711 -3.94644,3.87879 -8.421206,7.14318 -13.538671,9.31269 -1.279475,0.40711 -2.524546,0.94471 -3.838424,1.22131 -1.089954,0.22945 -2.553869,-0.51216 -3.329128,0.2876 -0.510267,0.5264 1.243153,0.96033 1.433026,1.66844 0.169264,0.63127 -1.110737,-0.80628 -1.363464,-1.40901 -0.611394,-1.45811 0.07952,-3.90706 0.314783,-5.24029 0.388604,-1.15825 0.735369,-2.3314 1.165817,-3.47476 3.263683,-8.66907 7.877075,-16.76057 12.487878,-24.76152 1.173184,-1.94168 2.318864,-3.90025 3.519549,-5.82505 4.999762,-8.01507 10.379022,-15.82185 16.445362,-23.07102 0.62365,-0.7175 1.2438,-1.43807 1.87095,-2.15251 0.39448,-0.4494 1.47676,-0.8121 1.19391,-1.33895 -3.16462,-5.894501 -2.94703,-4.069508 -4.208818,-2.344166 -0.33791,0.46205 -0.690301,0.913336 -1.03545,1.370006 -5.370422,6.74587 -10.767057,13.47393 -16.35117,20.04476 -3.964133,4.57174 -5.66126,6.58851 -9.846474,11.15404 -8.358685,9.11826 -17.166833,17.82402 -26.472573,25.9772 -2.250892,1.94354 -4.476355,3.91691 -6.752674,5.8306 -1.838995,1.54603 -3.763653,2.98876 -5.591937,4.54745 -2.106631,1.79598 -3.99505,3.81215 -5.923442,5.78981 0,0 4.259194,2.54563 4.259194,2.54563 z" />
  </g>
</svg>"""

if __name__ == "__main__":
    img = image_from_svg(svg_code, 50)
    img = pattern_image_with_title(img, 300, 300, 45)
    write_png('result.png', img)
    write_jpeg('result.jpg', img, 'WHITE')

Any idea how to make this work is more then welcome. Thanks in advance!

Describe the bug Sir, I need to export a Pillow image with a background (255, 255, 255, 0), I use this code to initialize the Skia to try to set the background as (255, 255, 255, 0)

with self.surface as canvas:
      color = skia.Color(255, 255, 255, 0)
      canvas.clear(color)

After I draw a line on the surface and use this code to export a Pillow image

skia_image = self.surface.makeImageSnapshot()
alphaType=skia.AlphaType.kUnpremul_AlphaType)
res = skia_image.convert(colorType=skia.ColorType.kRGBA_8888_ColorType,
       alphaType=skia.AlphaType.kUnpremul_AlphaType)
return Image.fromarray(
        res
)

But the background is (0, 0, 0, 0) when get the pillow Image

Please help! it will be greatly appreciated. Thanks.

It seems the SVG canvas does not apply any patheffects for canvas.drawRect(...)

from IPython.core.display import SVG
import io

stream = skia.DynamicMemoryWStream()
canvas = skia.SVGCanvas.Make((100, 100), stream)

rect = skia.Rect(10, 10, 50, 50)
paint = skia.Paint(
            AntiAlias=True,
            PathEffect=skia.DashPathEffect.Make([10.0, 5.0], 0.0),
            Style=skia.Paint.kStroke_Style,
            StrokeWidth=1,
)
canvas.drawRect(rect, paint)

del canvas
stream.flush()

SVG(stream.detachAsData())

The patheffects e.g. dashedpatheffect is being applied for PNG images without issues.

surface = skia.Surface(100, 100)
canvas = surface.getCanvas()
rect = skia.Rect(10, 10, 50, 50)
paint = skia.Paint(
        AntiAlias=True,
        PathEffect=skia.DashPathEffect.Make([10.0, 5.0], 0.0),
        Style=skia.Paint.kStroke_Style,
        StrokeWidth=1,
)
canvas.drawRect(rect, paint)
image = surface.makeImageSnapshot()

display(image)

I know we can use path.addRect(...), but the output xml is very large.

Does anyone know if it possible to add a stroke-dasharray attribute directly to a rect in the output .svg instead?

Cheers,

Describe the bug Is not a skia-delphi package issue but a miss on requirements when used in windows OSs.

import skia return error: ImportError: DLL load failed while importing skia: The specified module could not be found.

To Reproduce Steps to reproduce the behavior:

1. A clean Windows 10 installation.
2. Install Python 3.9.12 and pip install skia-python.

Expected behavior That skia package is found and loaded.

Desktop (please complete the following information):

• OS: W10 (new clean installation)
• Python: 3.9.12
• skia-python version: 87.4

Additional context Checking skia pyd, with "Dependency Walker", MSVCP140.DLL is not found by PYD. After downloading and installing "Microsoft Visual C++ 2015 Redistributable Update 3 RC" package the command "import skia" WORKED fine so it is a MUST to work with Python Skia on Windows environments.

Link to download: https://www.microsoft.com/en-US/download/details.aspx?id=52685