本文整理汇总了Python中cairocffi.FONT_SLANT_NORMAL属性的典型用法代码示例。如果您正苦于以下问题：Python cairocffi.FONT_SLANT_NORMAL属性的具体用法？Python cairocffi.FONT_SLANT_NORMAL怎么用？Python cairocffi.FONT_SLANT_NORMAL使用的例子？那么恭喜您, 这里精选的属性代码示例或许可以为您提供帮助。您也可以进一步了解该属性所在类cairocffi的用法示例。
在下文中一共展示了cairocffi.FONT_SLANT_NORMAL属性的3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: set_font_style
# 需要导入模块: import cairocffi [as 别名]
# 或者: from cairocffi import FONT_SLANT_NORMAL [as 别名]
def set_font_style(self, italic=None, bold=None):
"""
Sets the font style (i.e. bold or italic) used.
:param italic:
Boolean flag, indicating whether text should be italic. None indicates we preserve the existing setting.
:param bold:
Boolean flag, indicating whether text should be bold. None indicates we preserve the existing setting.
:return:
None
"""
if italic is not None:
self.font_italic = italic
if bold is not None:
self.font_bold = bold
self.context.select_font_face(family="FreeSerif",
slant=cairo.FONT_SLANT_ITALIC if self.font_italic else cairo.FONT_SLANT_NORMAL,
weight=cairo.FONT_WEIGHT_BOLD if self.font_bold else cairo.FONT_SLANT_NORMAL
) 示例2: paint_text
# 需要导入模块: import cairocffi [as 别名]
# 或者: from cairocffi import FONT_SLANT_NORMAL [as 别名]
def paint_text(text, w, h, rotate=False, ud=False, multi_fonts=False):
surface = cairo.ImageSurface(cairo.FORMAT_RGB24, w, h)
with cairo.Context(surface) as context:
context.set_source_rgb(1, 1, 1) # White
context.paint()
# this font list works in CentOS 7
if multi_fonts:
fonts = ['Century Schoolbook', 'Courier', 'STIX', 'URW Chancery L', 'FreeMono']
context.select_font_face(np.random.choice(fonts), cairo.FONT_SLANT_NORMAL,
np.random.choice([cairo.FONT_WEIGHT_BOLD, cairo.FONT_WEIGHT_NORMAL]))
else:
context.select_font_face('Courier', cairo.FONT_SLANT_NORMAL, cairo.FONT_WEIGHT_BOLD)
context.set_font_size(25)
box = context.text_extents(text)
border_w_h = (4, 4)
if box[2] > (w - 2 * border_w_h[1]) or box[3] > (h - 2 * border_w_h[0]):
raise IOError('Could not fit string into image. Max char count is too large for given image width.')
# teach the RNN translational invariance by
# fitting text box randomly on canvas, with some room to rotate
max_shift_x = w - box[2] - border_w_h[0]
max_shift_y = h - box[3] - border_w_h[1]
top_left_x = np.random.randint(0, int(max_shift_x))
if ud:
top_left_y = np.random.randint(0, int(max_shift_y))
else:
top_left_y = h // 2
context.move_to(top_left_x - int(box[0]), top_left_y - int(box[1]))
context.set_source_rgb(0, 0, 0)
context.show_text(text)
buf = surface.get_data()
a = np.frombuffer(buf, np.uint8)
a.shape = (h, w, 4)
a = a[:, :, 0] # grab single channel
a = a.astype(np.float32) / 255
a = np.expand_dims(a, 0)
if rotate:
a = image.random_rotation(a, 3 * (w - top_left_x) / w + 1)
a = speckle(a)
return a 示例3: paint_text
# 需要导入模块: import cairocffi [as 别名]
# 或者: from cairocffi import FONT_SLANT_NORMAL [as 别名]
def paint_text(text, w, h, rotate=False, ud=False, multi_fonts=False):
surface = cairo.ImageSurface(cairo.FORMAT_RGB24, w, h)
with cairo.Context(surface) as context:
context.set_source_rgb(1, 1, 1) # White
context.paint()
# this font list works in Centos 7
if multi_fonts:
fonts = ['Century Schoolbook', 'Courier', 'STIX', 'URW Chancery L', 'FreeMono']
context.select_font_face(np.random.choice(fonts), cairo.FONT_SLANT_NORMAL,
np.random.choice([cairo.FONT_WEIGHT_BOLD, cairo.FONT_WEIGHT_NORMAL]))
else:
context.select_font_face('Courier', cairo.FONT_SLANT_NORMAL, cairo.FONT_WEIGHT_BOLD)
context.set_font_size(25)
box = context.text_extents(text)
border_w_h = (4, 4)
if box[2] > (w - 2 * border_w_h[1]) or box[3] > (h - 2 * border_w_h[0]):
raise IOError('Could not fit string into image. Max char count is too large for given image width.')
# teach the RNN translational invariance by
# fitting text box randomly on canvas, with some room to rotate
max_shift_x = w - box[2] - border_w_h[0]
max_shift_y = h - box[3] - border_w_h[1]
top_left_x = np.random.randint(0, int(max_shift_x))
if ud:
top_left_y = np.random.randint(0, int(max_shift_y))
else:
top_left_y = h // 2
context.move_to(top_left_x - int(box[0]), top_left_y - int(box[1]))
context.set_source_rgb(0, 0, 0)
context.show_text(text)
buf = surface.get_data()
a = np.frombuffer(buf, np.uint8)
a.shape = (h, w, 4)
a = a[:, :, 0] # grab single channel
a = a.astype(np.float32) / 255
a = np.expand_dims(a, 0)
if rotate:
a = image.random_rotation(a, 3 * (w - top_left_x) / w + 1)
a = speckle(a)
return a