After running 2to3

cairo_test.py

@@ -0,0 +1,74 @@
+import math
+import cairo
+from PIL import Image
+import subprocess as sp
+import os
+import numpy as np
+import sys
+
+WIDTH, HEIGHT = 1024, 1024
+
+
+def argb32_to_rgba(array):
+    h, w = array.shape
+    result = np.ndarray(shape=(h, w, 4), dtype=np.uint8)
+    for i in range(0, 4):
+        result[:, :, (i + 1) % 4] = (array // (256**i)) % 256
+    # result[:, :, 3] = array % 256
+    return result
+
+
+data = np.ndarray(shape=(HEIGHT, WIDTH, 4), dtype=np.uint8)
+
+surface = cairo.ImageSurface.create_for_data(
+    data, cairo.FORMAT_ARGB32, WIDTH, HEIGHT
+)
+
+# surface = cairo.ImageSurface(cairo.FORMAT_ARGB32, WIDTH, HEIGHT)
+
+# surface = cairo.ImageSurface(cairo.FORMAT_ARGB32, WIDTH, HEIGHT)
+ctx = cairo.Context(surface)
+
+ctx.scale(WIDTH, HEIGHT)  # Normalizing the canvas
+
+pat = cairo.LinearGradient(0.0, 0.0, 0.0, 1.0)
+pat.add_color_stop_rgba(1, 0.7, 0, 0, 0.5)  # First stop, 50% opacity
+pat.add_color_stop_rgba(0, 0.9, 0.7, 0.2, 1)  # Last stop, 100% opacity
+
+ctx.rectangle(0, 0, 1, 1)  # Rectangle(x0, y0, x1, y1)
+ctx.set_source(pat)
+ctx.fill()
+
+ctx.translate(0.1, 0.1)  # Changing the current transformation matrix
+
+ctx.move_to(0, 0)
+# Arc(cx, cy, radius, start_angle, stop_angle)
+ctx.arc(0.2, 0.1, 0.1, -math.pi / 2, 0)
+ctx.line_to(0.5, 0.1)  # Line to (x,y)
+# Curve(x1, y1, x2, y2, x3, y3)
+ctx.curve_to(0.5, 0.2, 0.5, 0.4, 0.2, 0.8)
+ctx.close_path()
+
+ctx.set_source_rgb(0.8, 0.2, 0.5)  # Solid color
+ctx.set_line_width(0.01)
+ctx.stroke()
+
+# ctx.set_source(pat)
+# ctx.fill()
+
+new_data = np.array(data)
+new_data[:,:,:3] = data[:,:,2::-1]
+
+im = Image.fromarray(new_data, mode="RGBa")
+im2 = im.convert("RGBA")
+im2.show()
+print(new_data[-1, -1])
+
+
+surface.write_to_png("example.png")  # Output to PNG
+
+FNULL = open(os.devnull, 'w')
+sp.call(["open", "example.png"], stdout=FNULL, stderr=sp.STDOUT)
+FNULL.close()
+
+print(np.array(Image.open("example.png"))[-1, -1])