drawingTests.py

#!/usr/bin/env python

import math
import cairo

WIDTH, HEIGHT = 256, 256

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)
ctx.arc (0.2, 0.1, 0.1, -math.pi/2, 0) # Arc(cx, cy, radius, start_angle, stop_angle)
ctx.line_to (0.5, 0.1) # Line to (x,y)
ctx.curve_to (0.5, 0.2, 0.5, 0.4, 0.2, 0.8) # Curve(x1, y1, x2, y2, x3, y3)
ctx.close_path ()

ctx.set_source_rgb (0.3, 0.2, 0.5) # Solid color
ctx.set_line_width (0.02)
ctx.stroke ()





c = ctx
c.move_to(0.3,0.3)
c.line_to(0.35,0.30)
c.line_to(0.35,0.35)
c.line_to(0.30,0.35)
c.curve_to(0.3, 0.3, 0.5, 0.5, 0.6, 0.4)
c.close_path()




c.set_source_rgb(0,1,0)
c.set_line_width(0.01)
#c.stroke()

c.set_source_rgb(1,0,0)
c.fill()


surface.write_to_png ("example.png") # Output to PNG