本文整理汇总了Python中cairo.Context.get_target方法的典型用法代码示例。如果您正苦于以下问题：Python Context.get_target方法的具体用法？Python Context.get_target怎么用？Python Context.get_target使用的例子？那么恭喜您, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类cairo.Context的用法示例。
在下文中一共展示了Context.get_target方法的2个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的Python代码示例。
示例1: glyphs
# 需要导入模块: from cairo import Context [as 别名]
# 或者: from cairo.Context import get_target [as 别名]
def glyphs(*args, **kwargs):
options = Options(infname='data/vorttest.txt', saveas='output/part1/',
outfname='vorttest.png', scale=100., seed_num=20, stepsize=.01,
steps=5, directions=1, norm=False, line_width=.5)
options.update(kwargs)
print >> log, options.infname
if not path.exists(options.saveas): os.makedirs(options.saveas)
(xmin, ymin), (xmax, ymax), uv = read2vecs(options.infname)
width, height = xmax - xmin, ymax - ymin
def index2world(points, xmin=xmin, ymin=ymin, scale=options.scale,
debug=False):
if debug:
print "index2world:",
print xscale, yscale, points.dtype
if debug: print points,
points[:,0] -= xmin
if debug: print points,
points[:,1] -= ymin
if debug: print points,
points *= scale
if debug: print points
if 'seed' in options:
seed = options.seed
else:
seed = product(np.linspace(xmin, xmax, num=options.seed_num),
np.linspace(ymin, ymax, num=options.seed_num))
ctx = Context(ImageSurface(cairo.FORMAT_ARGB32, int(options.scale * width),
int(options.scale * height)))
ctx.set_source_rgba(0,0,0)
ctx.set_line_width(options.line_width)
for s in seed:
points = sline(uv, (xmin, ymin), (xmax, ymax), np.array(s),
options.stepsize, options.steps, options.norm, options.directions)
print >> log, points
index2world(points)
print >> log, points
draw_arrow(ctx, points, arrowhead_size=2)
with open(path.join(options.saveas, options.outfname), 'w') as outf:
ctx.get_target().write_to_png(outf)示例2: do_draw
# 需要导入模块: from cairo import Context [as 别名]
# 或者: from cairo.Context import get_target [as 别名]
def do_draw(self, context: cairo.Context) -> bool:
if not self.adjustment or self.adjustment.get_upper() <= 0:
return False
height = self.get_allocated_height()
width = self.get_allocated_width()
if width <= 0 or height <= 0:
return False
base_bg, base_outline, handle_overdraw, handle_outline = (
self.get_map_base_colors())
x0 = self.overdraw_padding + 0.5
x1 = width - 2 * x0
height_scale = height * self.get_height_scale()
if self._cached_map is None:
surface = cairo.Surface.create_similar(
context.get_target(), cairo.CONTENT_COLOR_ALPHA, width, height)
cache_ctx = cairo.Context(surface)
cache_ctx.set_line_width(1)
cache_ctx.rectangle(x0, -0.5, x1, height_scale + 0.5)
cache_ctx.set_source_rgba(*base_bg)
cache_ctx.fill()
# We get drawing coordinates by tag to minimise our source
# colour setting, and make this loop slightly cleaner.
tagged_diffs = self.chunk_coords_by_tag()
for tag, diffs in tagged_diffs.items():
cache_ctx.set_source_rgba(*self.fill_colors[tag])
for y0, y1 in diffs:
y0 = round(y0 * height_scale) + 0.5
y1 = round(y1 * height_scale) - 0.5
cache_ctx.rectangle(x0, y0, x1, y1 - y0)
cache_ctx.fill_preserve()
cache_ctx.set_source_rgba(*self.line_colors[tag])
cache_ctx.stroke()
cache_ctx.rectangle(x0, -0.5, x1, height_scale + 0.5)
cache_ctx.set_source_rgba(*base_outline)
cache_ctx.stroke()
self._cached_map = surface
context.set_source_surface(self._cached_map, 0, 0)
context.paint()
# Draw our scroll position indicator
context.set_line_width(1)
context.set_source_rgba(*handle_overdraw)
adj_y = self.adjustment.get_value() / self.adjustment.get_upper()
adj_h = self.adjustment.get_page_size() / self.adjustment.get_upper()
context.rectangle(
x0 - self.overdraw_padding, round(height_scale * adj_y) + 0.5,
x1 + 2 * self.overdraw_padding, round(height_scale * adj_h) - 1,
)
context.fill_preserve()
context.set_source_rgba(*handle_outline)
context.stroke()
return True