def emotion_to_avatar(emotion, font_path, color=Color("black")):
"""使用颜文字(文本)来生成一张方形图片
:type emotion: string
:param emotion: 需要绘制在图像上的文本
:type font_path: string
:param font_path: 字体文件路径
:type color: Color
:param color: 绘制的文本颜色
返回结果是一个 Image 对象，并叫将会被规整到 AVATAR_SIZE 设定的大小
"""
font_size = 128
max_size = len(emotion.decode('utf-8')) * font_size
img = Image(Geometry(max_size, max_size), Color("white"))
img.font(font_path)
img.fontPointsize(font_size)
img.annotate(emotion, GravityType.CenterGravity)
img.trim()
img.write('tmp.png')
height = img.rows()
width = img.columns()
origin_pimg = PImage.open('tmp.png')
new_pimg = PImage.new("RGB", (max(height, width), max(height, width)), "white")
if height > width:
new_pimg.paste(origin_pimg, ((height - width) / 2, 0))
else:
new_pimg.paste(origin_pimg, (0, (width - height) / 2))
return new_pimg.resize(AVATAR_SIZE, PImage.ANTIALIAS)
from pgmagick import Image, Geometry, Color, \
DrawableCircle, DrawableText
im = Image(Geometry(300, 300), Color("yellow"))
circle = DrawableCircle(100.0, 100.0, 20.0, 20.0)
im.draw(circle)
im.fontPointsize(65)
im.font("/var/lib/defoma/x-ttcidfont-conf.d/dirs/TrueType/UnBatang.ttf")
text = DrawableText(30, 250, "hello gm")
im.draw(text)
im.write('circle-text.png')
def render(self, path, scale=5, width=10000, min_size=10, max_size=200,
min_fsize=14, max_fsize=200, bg_color='#003059'):
"""
Render a PNG from the node coordinates.
Args:
path (str): The image path.
scale (float): Pixels per coordinate unit.
width (int): The height/width, in pixels.
min_size (int): The min node size.
max_size (int): The max node size.
min_fsize (int): The min font size.
max_fsize (int): The max font size.
"""
# Initialize the canvas, set font.
image = Image(Geometry(width, width), Color(bg_color))
# Set the label font.
image.font(config['network']['font'])
for cn, n in bar(self.graph.nodes_iter(data=True),
expected_size=len(self.graph)):
# Get (x,y) / radius.
x, y = self.get_xy(cn, scale, width)
r = (n['viz']['size']*scale) / 2
# Index the coordinates.
self.graph.node[cn]['x'] = x
self.graph.node[cn]['y'] = y
self.graph.node[cn]['r'] = r
# Get the node label.
label = ', '.join([
n.get('title', ''),
n.get('author', '')
])
# Get the node color.
color = '#%02x%02x%02x' % (
n['viz']['color']['r'],
n['viz']['color']['g'],
n['viz']['color']['b']
)
# Draw the node.
dl = DrawableList()
dl.append(DrawableFillColor(color))
dl.append(DrawableStrokeColor('black'))
dl.append(DrawableStrokeWidth(n['r']/15))
dl.append(DrawableFillOpacity(0.9))
dl.append(DrawableCircle(x, y, x+r, y+r))
image.draw(dl)
# Compute the font size.
ratio = (n['viz']['size']-min_size) / (max_size-min_size)
fsize = min_fsize + (ratio*(max_fsize-min_fsize))
image.fontPointsize(fsize)
# Measure the width of the label.
tm = TypeMetric()
image.fontTypeMetrics(label, tm)
tw = tm.textWidth()
# Draw the label.
dl = DrawableList()
dl.append(DrawablePointSize(fsize))
dl.append(DrawableFillColor('white'))
dl.append(DrawableText(x-(tw/2), y, label))
image.draw(dl)
image.write(os.path.abspath(path))
from pgmagick import Image, Geometry, Color, TypeMetric, \
DrawableText, DrawableList, DrawableGravity, GravityType
im = Image(Geometry(600, 600), Color("transparent"))
im.fontPointsize(30)
im.fillColor(Color("#f010f0"))
im.strokeColor(Color("transparent"))
im.font("Vera.ttf")
dl = DrawableList()
dl.append(DrawableGravity(GravityType.CenterGravity))
dl.append(DrawableText(0, 0, "center"))
tm = TypeMetric()
im.fontTypeMetrics("northn", tm)
font_height = tm.textHeight()
dl.append(DrawableGravity(GravityType.NorthGravity))
dl.append(DrawableText(0, font_height / 2., "north"))
dl.append(DrawableGravity(GravityType.WestGravity))
dl.append(DrawableText(0, 0, "west"))
dl.append(DrawableGravity(GravityType.EastGravity))
dl.append(DrawableText(0, 0, "east"))
dl.append(DrawableText(0, 20, "east-long"))
dl.append(DrawableGravity(GravityType.SouthGravity))
dl.append(DrawableText(0, 0, "south"))
dl.append(DrawableGravity(GravityType.NorthWestGravity))
