1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
|
import cairo
import pango
from math import *
from fringutil import *
import os
class Hotspot:
def __init__(self, is_dir, path, sumlist, value):
self.is_dir = is_dir
self.path = path
self.sumlist = sumlist
self.value = value
self.percentage = value*100
class SideLink(Hotspot):
def __init__(self, is_dir, path, sumlist, value, minpos, maxpos):
Hotspot.__init__(self, is_dir, path, sumlist, value)
self.minx,self.miny = minpos
self.maxx,self.maxy = maxpos
class Segment(Hotspot):
def __init__(self, is_dir, path, sumlist, start, end):
Hotspot.__init__(self, is_dir, path, sumlist, end-start)
self.start, self.end = start, end
class FringRenderer:
def __init__(self):
self.side_links = []
self.lookup_data = []
self.reset()
def reset(self):
# set ring layout
self.MAX_LEVEL = 1
self.WIDTH, self.HEIGHT = 1024, 768
self.INNER_RADIUS = 100
self.RING_RADIUS = 60
self.RING_SPACE = 0
self.RINGS_MAX = 4
self.LINE_WIDTH = .5
self.LABEL_UNTIL_RING = 0
self.RING_OUTLINE_COLOR = (.2,.2,.2)
self.LEG_LINE_WIDTH = 1
self.LEG_LINE_COLOR = (.1,.1,.1)
self.LINK_LABEL_COLOR = (0,0,1)
self.FILE_LABEL_COLOR = (.5,.5,.5)
def prepare_layouts(self,ctx):
self.linklayout = ctx.create_layout()
self.linklayout.set_font_description(pango.FontDescription("sans 8"))
def draw_segment(self,ctx, ring, start_angle, end_angle, start_hue, end_hue, data, previouspath=""):
if data is None: return
if ring == 0:
self.lookup_data = []
self.side_links = []
while len(self.lookup_data) <= ring:
self.lookup_data.append([])
CENTERX, CENTERY = self.WIDTH/2, self.HEIGHT/2
ctx.move_to(CENTERX, CENTERY)
n = len(data.children)
i = 0
accumulated = 0
last = start_angle
for entry in data.children:
hasContents = entry.children != None
start = last
accumulated += entry.size
if data.size == 0: continue
end = start_angle+(end_angle - start_angle)*1.0*accumulated/data.size
if end-start >= .005:
p = previouspath+os.sep+entry.name
self.lookup_data[ring].append( Segment(hasContents , p, entry, start, end) )
color = self._choose_color(start_hue + (end_hue-start_hue)*1.0*i/n, ring)
r = self.INNER_RADIUS + ring * (self.RING_RADIUS + self.RING_SPACE)
ctx.move_to(CENTERX+r*cos(start*2*pi), CENTERY+r*sin(start*2*pi))
ctx.arc(CENTERX, CENTERY, r+self.RING_RADIUS, start*2*pi, end*2*pi)
ctx.arc_negative(CENTERX, CENTERY, r, end*2*pi, start*2*pi)
ctx.close_path()
ctx.set_line_width(self.LINE_WIDTH)
ctx.set_source_rgb(*color)
ctx.fill_preserve()
ctx.set_source_rgb(*self.RING_OUTLINE_COLOR)
ctx.stroke()
if hasContents and ring+1 < self.RINGS_MAX:
self.draw_segment(ctx, ring+1, start, end,
start_hue + (end_hue-start_hue)*1.0*i/n,
start_hue + (end_hue-start_hue)*1.0*(i+1)/n, entry,
previouspath+os.sep+entry.name)
r += self.RING_RADIUS/2
middle = CENTERX+r*cos((start+end)*pi), CENTERY+r*sin((start+end)*pi)
if ring <= 0:
# compute the points of the link line
e = self.INNER_RADIUS + self.RING_RADIUS - self.RING_RADIUS/4
leg_radius = self.INNER_RADIUS + (self.RINGS_MAX+1) * (self.RING_RADIUS + self.RING_SPACE)
leg_radius -= (self.RING_RADIUS + self.RING_SPACE) / 2
if cos((start+end)*pi) >= 0:
x = self.WIDTH
align_x = 0
else:
x = 0
align_x = 1
y = CENTERY+leg_radius*sin((start+end)*pi)
xmod = 2*(align_x*2-1)
point_a = CENTERX+e*cos((start+end)*pi), CENTERY+e*sin((start+end)*pi)
point_b = CENTERX+leg_radius*cos((start+end)*pi), CENTERY+leg_radius*sin((start+end)*pi)
point_c = x,y
# draw the side link label -------------------------------------------
ctx.move_to(x+xmod,y)
if hasContents: ctx.set_source_rgb(*self.LINK_LABEL_COLOR)
else: ctx.set_source_rgb(*self.FILE_LABEL_COLOR)
# find out how large the label will be
label = unicode(entry.name)
self.linklayout.set_text( unicode(entry.name) )
width, height = self.linklayout.get_pixel_size()
# if label too long, truncate by one until it fits
m = self.WIDTH/2 - (self.RINGS_MAX*self.RING_RADIUS) - self.INNER_RADIUS
while width > m and m > 0:
label = label[:-1]
self.linklayout.set_text( label+"..." )
width, height = self.linklayout.get_pixel_size()
if len(label) < 3: width = 0 # emergency escape
# print the labet
ctx.rel_move_to(-width*(1-align_x), -height*.5)
ctx.show_layout(self.linklayout)
if align_x == 0: width *= -1 #TODO change this...
self.__register_side_link(
hasContents,
p,
entry,
end-start,
x,y+(height/2),x+(width),y-(height/2))
# draw line
ctx.move_to(*point_a)
ctx.line_to(*point_b)
offset = 5
if align_x: ctx.line_to(point_c[0]+width+offset,point_c[1]) #TODO ...and this!
else: ctx.line_to(point_c[0]+xmod+width-offset,point_c[1])
ctx.set_source_rgb(*self.LEG_LINE_COLOR)
ctx.set_line_width(self.LEG_LINE_WIDTH)
ctx.stroke()
# write disk usage on segments -------------------------------------------
if ring == 0: # only draw percents on the first ring
if self.RING_RADIUS >= ctx.text_extents("55%")[3]:
ctx.move_to(*middle)
ctx.set_source_rgb(0, 0, 0)
percent = (end-start)*100
if percent >= 8:
#self._draw_centered_text2(ctx, "%.0f%%" % ((end-start)*100), pretty_size(entry.size))
self._draw_centered_text(ctx, "%.0f%%" %percent)
last = end
i += 1
if ring == 0:
ctx.set_source_rgb(.3,.3,.3)
i = format_disk_space(data.size)
ctx.move_to(CENTERX, CENTERY)
width,height = self._draw_centered_text(ctx, i[0], .5, 1 )
ctx.move_to(CENTERX, CENTERY+height)
self._draw_centered_text(ctx, i[1], .5, 1 )
def get_hotspot_at(self,x,y):
for h in self.side_links:
if x >= h.minx and x <= h.maxx and \
y >= h.miny and y <= h.maxy:
return h
def sqr(x):
return x*x
CENTERX, CENTERY = self.WIDTH/2, self.HEIGHT/2
radius = sqrt(sqr(x - CENTERX) + sqr(y - CENTERY))
angle = atan2(y - CENTERY, x - CENTERX)
v = angle/(2*pi)
if v < 0:
v+=1
if radius <= self.INNER_RADIUS:
return None
# A simple bisection algorithm
try:
ring = int((radius - self.INNER_RADIUS)/(self.RING_RADIUS + self.RING_SPACE))
data = self.lookup_data[ring]
except IndexError: return None
except ZeroDivisionError: return None
except OverflowError: return None
minidx, maxidx = 0, len(data)-1
p = int(maxidx*v) # Initial estimation
while True:
try: d = data[p]
except IndexError: return None
if v <= d.start:
maxidx = p-1
elif v <= d.end:
return d
else:
minidx = p+1
if minidx > maxidx:
return None
np = int((minidx+maxidx))/2
if np == p:
return None
p = np # Funny!
def __register_side_link(self,is_dir,path,sumlist,value,x0,y0,x1,y1):
if x1 < x0: x0,x1 = x1,x0 # swap
if y1 < y0: y0,y1 = y1,y0
self.side_links.append(SideLink(is_dir, path, sumlist, value, (x0,y0), (x1,y1)))
def hsv2rgb(self,h,s,v):
if s<=0:
return 255*v,255*v,255*v
h=6.0*(h%1.0)
f=h-int(h)
p=int(255*v*(1.0-s))
q=int(255*v*(1.0-(s*f)))
t=int(255*v*(1.0-(s*(1.0-f))))
v=int(255*v)
return ((v,t,p),
(q,v,p),
(p,v,t),
(p,q,v),
(t,p,v),
(v,p,q))[int(h)]
def _choose_color(self,v, ring):
color = self.hsv2rgb(v, .61, 1-ring*0.1)
return color[0]/256.0, color[1]/256.0, color[2]/256.0,
def _draw_centered_text(self,ctx, text, align_x = .5, align_y = .5):
try: text = unicode(text)
except: return
self.linklayout.set_text(text)
width,height = self.linklayout.get_pixel_size()
ctx.rel_move_to(-width*(1-align_x), -height*align_y)
ctx.show_layout(self.linklayout)
return width,height
def _draw_centered_text2(self,ctx, text1, text2):
try:
text1 = unicode(text1)
text2 = unicode(text2)
except: return
extents1 = ctx.text_extents(text1)
extents2 = ctx.text_extents(text2)
h = max((extents1[3], extents2[3]))
p = ctx.get_current_point()
ctx.rel_move_to(-extents1[2]/2, -1)
ctx.show_text(text1)
ctx.move_to(*p)
ctx.rel_move_to(-extents2[2]/2, h+1)
ctx.show_text(text2)
|