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))
def buildNodeImage(self,node): self.buildCounterNode+=1 node['name'] = node['name'].encode("utf-8") print "{0:.2f}".format(self.buildCounterNode / (self.buildCounterNodeTotal) * 100)," percent complete of this batch \r", scale = self.scaleFactor #if node['size'] > 10: #cale = 4.75 #if node['size'] < 900: # scale = 4 circleHeight = int(float(node['size'])*scale) circleWidth = int(float(node['size'])*scale) canvasHeight = int(circleHeight *2) canvasWidth = int(circleWidth* 2) im = Image(Geometry(10,10), 'transparent') fontsize = self.returnFontSize(canvasHeight) im.fontPointsize(fontsize) tm = TypeMetric() im.fontTypeMetrics(node['name'], tm) if tm.textWidth() > canvasWidth: canvasWidth = int(tm.textWidth()) + 5 im = Image(Geometry(canvasWidth,canvasHeight), 'transparent') im.density("72x72") im.magick('RGB') im.resolutionUnits(ResolutionType.PixelsPerInchResolution) im.strokeAntiAlias(True) color = (node['rgb'][0],node['rgb'][1],node['rgb'][2]) color = self.rgb_to_hex( color ) im.fillColor(color); im.strokeWidth(2); if circleWidth <= 20: im.strokeColor("transparent"); else: im.strokeColor("black"); if circleWidth <= 50: im.strokeWidth(1); circle = DrawableCircle( canvasWidth/2 , canvasHeight/2, (canvasWidth/2) + (circleWidth/2), (canvasHeight/2) + (circleHeight/2)) im.draw(circle) im.fillColor("white"); im.strokeColor("black"); im.strokeWidth(1); fontsize = self.returnFontSize(canvasHeight) im.fontPointsize(fontsize) tm = TypeMetric() im.fontTypeMetrics(node['name'], tm) textWidth = tm.textWidth() textHeight = tm.textHeight() if fontsize <= 30: im.strokeColor("transparent") text = DrawableText((canvasWidth / 2) - (textWidth/2), canvasHeight/2 + 6 , node['name']) im.draw(text) im.write(self.dataCircles + str(node['id']) + '.png')
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))