Web   ·   Wiki   ·   Activities   ·   Blog   ·   Lists   ·   Chat   ·   Meeting   ·   Bugs   ·   Git   ·   Translate   ·   Archive   ·   People   ·   Donate
summaryrefslogtreecommitdiffstats
path: root/tacanvas.py
blob: 473a1362d0bf06d8790de4ea82f95dfce3eaeeca (plain)
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
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
#Copyright (c) 2007-8, Playful Invention Company.
#Copyright (c) 2008-10, Walter Bender

#Permission is hereby granted, free of charge, to any person obtaining a copy
#of this software and associated documentation files (the "Software"), to deal
#in the Software without restriction, including without limitation the rights
#to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
#copies of the Software, and to permit persons to whom the Software is
#furnished to do so, subject to the following conditions:

#The above copyright notice and this permission notice shall be included in
#all copies or substantial portions of the Software.

#THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
#IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
#FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
#AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
#LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
#OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
#THE SOFTWARE.

import gtk
from math import sin, cos, pi
from sprites import Sprite
from tasprite_factory import SVG
from tautils import image_to_base64, data_to_string, round_int
import pango
from taconstants import CANVAS_LAYER, DEFAULT_TURTLE
import logging
_logger = logging.getLogger('turtleart-activity')

def wrap100(n):
    n = int(n)
    n %= 200
    if n > 99:
        n = 199-n
    return n

def calc_shade(c, s):
    if s < 0:
        return int(c*(1+s*.8))
    return int(c+(65536-c)*s*.9)

colors = {}
DEGTOR = 2*pi/360

color_table = (
    0xFF0000,0xFF0D00,0xFF1A00,0xFF2600,0xFF3300,
    0xFF4000,0xFF4D00,0xFF5900,0xFF6600,0xFF7300,
    0xFF8000,0xFF8C00,0xFF9900,0xFFA600,0xFFB300,
    0xFFBF00,0xFFCC00,0xFFD900,0xFFE600,0xFFF200,
    0xFFFF00,0xE6FF00,0xCCFF00,0xB3FF00,0x99FF00,
    0x80FF00,0x66FF00,0x4DFF00,0x33FF00,0x1AFF00,
    0x00FF00,0x00FF0D,0x00FF1A,0x00FF26,0x00FF33,
    0x00FF40,0x00FF4D,0x00FF59,0x00FF66,0x00FF73,
    0x00FF80,0x00FF8C,0x00FF99,0x00FFA6,0x00FFB3,
    0x00FFBF,0x00FFCC,0x00FFD9,0x00FFE6,0x00FFF2,
    0x00FFFF,0x00F2FF,0x00E6FF,0x00D9FF,0x00CCFF,
    0x00BFFF,0x00B3FF,0x00A6FF,0x0099FF,0x008CFF,
    0x0080FF,0x0073FF,0x0066FF,0x0059FF,0x004DFF,
    0x0040FF,0x0033FF,0x0026FF,0x001AFF,0x000DFF,
    0x0000FF,0x0D00FF,0x1A00FF,0x2600FF,0x3300FF,
    0x4000FF,0x4D00FF,0x5900FF,0x6600FF,0x7300FF,
    0x8000FF,0x8C00FF,0x9900FF,0xA600FF,0xB300FF,
    0xBF00FF,0xCC00FF,0xD900FF,0xE600FF,0xF200FF,
    0xFF00FF,0xFF00E6,0xFF00CC,0xFF00B3,0xFF0099,
    0xFF0080,0xFF0066,0xFF004D,0xFF0033,0xFF001A)

#
# A class for the Turtle graphics canvas
#
class TurtleGraphics:
    def __init__(self, tw, width, height):
        self.tw = tw
        self.width = width
        self.height = height
        self.canvas = Sprite(tw.sprite_list, 0, 0, 
            gtk.gdk.Pixmap(self.tw.area, self.width, self.height, -1))
        (self.cx, self.cy) = self.canvas.get_xy()
        self.canvas.type = 'canvas'
        self.canvas.set_layer(CANVAS_LAYER)
        self.gc = self.canvas.images[0].new_gc()
        self.cm = self.gc.get_colormap()
        self.fgrgb = [255, 0, 0]
        self.fgcolor = self.cm.alloc_color('red')
        self.bgrgb = [255, 248, 222]
        self.bgcolor = self.cm.alloc_color('#fff8de')
        self.textsize = 48
        self.textcolor = self.cm.alloc_color('blue')
        self.tw.active_turtle.show()
        self.shade = 0
        self.pendown = True
        self.xcor = 0
        self.ycor = 0
        self.heading = 0
        self.pensize = 5
        self.tcolor = 0
        self.color = 0
        self.svg = SVG()
        self.svg.set_fill_color('none')
        self.tw.svg_string = ''
        self.clearscreen(False)

    def clearscreen(self, share=True):
        rect = gtk.gdk.Rectangle(0, 0, self.width, self.height)
        self.gc.set_foreground(self.bgcolor)
        self.canvas.images[0].draw_rectangle(self.gc, True, *rect)
        self.invalt(0, 0, self.width, self.height)
        self.setpensize(5, share)
        self.setcolor(0, share)
        self.settextcolor(70)
        self.settextsize(48)
        self.setshade(50, share)
        self.setpen(True, share)
        for turtle_key in iter(self.tw.turtles.dict):
            self.set_turtle(turtle_key)
            self.tw.active_turtle.set_color(0)
            self.tw.active_turtle.set_shade(50)
            self.tw.active_turtle.set_pen_size(5)
            self.tw.active_turtle.set_pen_state(True)
            self.seth(0, share)
            self.setxy(0, 0, share)
        self.set_turtle(DEFAULT_TURTLE)
        self.tw.svg_string = ''
        self.svg.reset_min_max()

    def forward(self, n, share=True):
        nn = n*self.tw.coord_scale
        self.gc.set_foreground(self.fgcolor)
        oldx, oldy = self.xcor, self.ycor
        try:
            self.xcor += nn*sin(self.heading*DEGTOR)
            self.ycor += nn*cos(self.heading*DEGTOR)
        except:
            pass
        if self.pendown:
            self.draw_line(oldx, oldy, self.xcor, self.ycor)
        self.move_turtle()
        if self.tw.saving_svg and self.pendown:
            self.tw.svg_string += self.svg.new_path(oldx, self.height/2-oldy)
            self.tw.svg_string += self.svg.line_to(self.xcor,
                                                   self.height/2-self.ycor)
            self.tw.svg_string += "\"\n"
            self.tw.svg_string += self.svg.style()
        if self.tw.sharing() and share:
            self.tw.activity.send_event("f|%s" % \
                (data_to_string([self.tw.nick, int(n)])))

    def seth(self, n, share=True):
        try:
            self.heading = n
        except:
            pass
        self.heading %= 360
        self.turn_turtle()
        if self.tw.sharing() and share:
            self.tw.activity.send_event("r|%s" % \
                (data_to_string([self.tw.nick, round_int(self.heading)])))

    def right(self, n, share=True):
        try:
            self.heading += n
        except:
            pass
        self.heading %= 360
        self.turn_turtle()
        if self.tw.sharing() and share:
            self.tw.activity.send_event("r|%s" % \
                (data_to_string([self.tw.nick, round_int(self.heading)])))

    def arc(self, a, r, share=True):
        self.gc.set_foreground(self.fgcolor)
        rr = r*self.tw.coord_scale
        try:
            if a < 0:
                self.larc(-a, rr)
            else:
                self.rarc(a, rr)
        except:
            pass
        # _logger.debug("moving to %f %f" % (self.xcor, self.ycor))
        self.move_turtle()
        if self.tw.sharing() and share:
            self.tw.activity.send_event("a|%s" % \
                (data_to_string([self.tw.nick, [round_int(a), round_int(r)]])))

    def rarc(self, a, r):
        if r < 0:
            r = -r
            a = -a
            s = 0
        else:
            s = 1
        oldx, oldy = self.xcor, self.ycor
        cx = self.xcor + r*cos(self.heading*DEGTOR)
        cy = self.ycor - r*sin(self.heading*DEGTOR)
        x = self.width/2 + int(cx-r)
        y = self.height/2 - int(cy+r)
        w = int(2*r)
        h = w
        if self.pendown:
            self.canvas.images[0].draw_arc(self.gc, False, x, y, w, h,
                                int(180 - self.heading - a)*64, int(a)*64)
            self.invalt(x - self.pensize*self.tw.coord_scale/2 - 3,
                        y - self.pensize*self.tw.coord_scale/2 - 3,
                        w + self.pensize*self.tw.coord_scale + 6,
                        h + self.pensize*self.tw.coord_scale + 6)
        self.right(a, False)
        self.xcor = cx - r*cos(self.heading*DEGTOR)
        self.ycor = cy + r*sin(self.heading*DEGTOR)
        if self.tw.saving_svg and self.pendown:
            self.tw.svg_string += self.svg.new_path(oldx, self.height/2-oldy)
            self.tw.svg_string += self.svg.arc_to(self.xcor,
                                                  self.height/2-self.ycor, r, a,
                                                  0, s)
            self.tw.svg_string += "\"\n"
            self.tw.svg_string += self.svg.style()

    def larc(self, a, r):
        if r < 0:
            r = -r
            a = -a
            s = 1
        else:
            s = 0
        oldx, oldy = self.xcor, self.ycor
        cx = self.xcor - r*cos(self.heading*DEGTOR)
        cy = self.ycor + r*sin(self.heading*DEGTOR)
        x = self.width/2 + int(cx-r)
        y = self.height/2 - int(cy+r)
        w = int(2*r)
        h = w
        if self.pendown:
            self.canvas.images[0].draw_arc(self.gc, False, x, y, w, h,
                                       int(360-self.heading)*64, int(a)*64)
            self.invalt(x - self.pensize*self.tw.coord_scale/2 - 3,
                        y - self.pensize*self.tw.coord_scale/2 - 3,
                        w + self.pensize*self.tw.coord_scale + 6,
                        h + self.pensize*self.tw.coord_scale + 6)
        self.right(-a, False)
        self.xcor = cx + r*cos(self.heading*DEGTOR)
        self.ycor = cy - r*sin(self.heading*DEGTOR)
        if self.tw.saving_svg and self.pendown:
            self.tw.svg_string += self.svg.new_path(oldx, self.height/2-oldy)
            self.tw.svg_string += self.svg.arc_to(self.xcor,
                                                  self.height/2-self.ycor, r, a,
                                                  0, s)
            self.tw.svg_string += "\"\n"
            self.tw.svg_string += self.svg.style()

    def setxy(self, x, y, share=True):
        x *= self.tw.coord_scale
        y *= self.tw.coord_scale
        try:
            self.xcor, self.ycor = x, y
        except:
            pass
        self.move_turtle()
        if self.tw.sharing() and share:
            self.tw.activity.send_event("x|%s" % \
                (data_to_string([self.tw.nick, [round_int(x), round_int(y)]])))

    def setpensize(self, ps, share=True):
        try:
            if ps < 0:
                ps = 0
            self.pensize = ps
        except:
            pass
        self.tw.active_turtle.set_pen_size(ps)
        self.gc.set_line_attributes(int(self.pensize*self.tw.coord_scale),
                     gtk.gdk.LINE_SOLID, gtk.gdk.CAP_ROUND, gtk.gdk.JOIN_MITER)
        self.svg.set_stroke_width(self.pensize)
        if self.tw.sharing() and share:
            self.tw.activity.send_event("w|%s" % \
                (data_to_string([self.tw.nick, round_int(ps)])))

    def setcolor(self, c, share=True):
        try:
            self.color = c
            self.tcolor = c
        except:
            pass
        self.tw.active_turtle.set_color(c)
        self.set_fgcolor()
        self.set_textcolor()
        if self.tw.sharing() and share:
            self.tw.activity.send_event("c|%s" % \
                (data_to_string([self.tw.nick, round_int(c)])))

    def settextcolor(self, c):
        try:
            self.tcolor = c
        except:
            pass
        self.set_textcolor()

    def settextsize(self, c):
        try:
            self.tw.textsize = c
        except:
            pass

    def setshade(self, s, share=True):
        try:
            self.shade = s
        except:
            pass
        self.tw.active_turtle.set_shade(s)
        self.set_fgcolor()
        self.set_textcolor()
        if self.tw.sharing() and share:
            self.tw.activity.send_event("s|%s" % \
                (data_to_string([self.tw.nick, round_int(s)])))

    def fillscreen(self, c, s):
        oldc, olds = self.color, self.shade
        self.setcolor(c, False)
        self.setshade(s, False)
        rect = gtk.gdk.Rectangle(0, 0, self.width, self.height)
        self.gc.set_foreground(self.fgcolor)
        self.bgrgb = self.fgrgb[:]
        self.canvas.images[0].draw_rectangle(self.gc, True, *rect)
        self.invalt(0, 0, self.width, self.height)
        self.setcolor(oldc, False)
        self.setshade(olds, False)
        self.tw.svg_string = ''
        self.svg.reset_min_max()

    def set_fgcolor(self):
        sh = (wrap100(self.shade) - 50)/50.0
        rgb = color_table[wrap100(self.color)]
        r, g, b = (rgb>>8)&0xff00, rgb&0xff00, (rgb<<8)&0xff00
        r, g, b = calc_shade(r, sh), calc_shade(g, sh), calc_shade(b, sh)
        self.fgrgb = [r>>8, g>>8, b>>8]
        self.fgcolor = self.cm.alloc_color(r, g, b)
        self.svg.set_stroke_color("#%02x%02x%02x" % (self.fgrgb[0],
                                                     self.fgrgb[1],
                                                     self.fgrgb[2]))

    def set_textcolor(self):
        sh = (wrap100(self.shade) - 50)/50.0
        rgb = color_table[wrap100(self.tcolor)]
        r, g, b = (rgb>>8)&0xff00, rgb&0xff00, (rgb<<8)&0xff00
        r, g, b = calc_shade(r, sh), calc_shade(g, sh), calc_shade(b, sh)
        self.tw.textcolor = self.cm.alloc_color(r, g, b)

    def setpen(self, bool, share=True):
        self.pendown = bool
        if self.tw.sharing() and share:
            self.tw.activity.send_event("p|%s" % \
                (data_to_string([self.tw.nick, bool])))

    def draw_pixbuf(self, pixbuf, a, b, x, y, w, h, path):
        w *= self.tw.coord_scale
        h *= self.tw.coord_scale
        self.canvas.images[0].draw_pixbuf(self.gc, pixbuf, a, b, x, y)
        self.invalt(x, y, w, h)
        if self.tw.saving_svg:
            if self.tw.running_sugar:
                # In Sugar, we need to embed the images inside the SVG
                self.tw.svg_string += self.svg.image(x-self.width/2, y, w, h,
                    path, image_to_base64(pixbuf, self.tw.activity))
            else:
                self.tw.svg_string += self.svg.image(x-self.width/2, y, w, h,
                                                     path)

    def draw_text(self, label, x, y, size, w):
        w *= self.tw.coord_scale
        self.gc.set_foreground(self.tw.textcolor)
        fd = pango.FontDescription('Sans')
        try:
            fd.set_size(int(size*self.tw.coord_scale)*pango.SCALE)
        except:
            pass
        if type(label) == str or type(label) == unicode:
            pl = self.tw.window.create_pango_layout(label.replace("\0"," "))
        elif type(label) == float or type(label) == int:
            pl = self.tw.window.create_pango_layout(str(label))
        else:
            pl = self.tw.window.create_pango_layout(str(label))
        pl.set_font_description(fd)
        pl.set_width(int(w) * pango.SCALE)
        self.canvas.images[0].draw_layout(self.gc, int(x), int(y), pl)
        w, h = pl.get_pixel_size()
        self.invalt(x, y, w, h)
        if self.tw.saving_svg and self.pendown:
            self.tw.svg_string += self.svg.text(x - self.width/2,
                                                y + size,
                                                size, w, label)

    def draw_line(self, x1, y1, x2, y2):
        x1, y1 = self.width/2 + int(x1), self.height/2 - int(y1)
        x2, y2 = self.width/2 + int(x2), self.height/2 - int(y2)
        if x1 < x2:
            minx, maxx = x1, x2
        else:
            minx, maxx = x2, x1
        if y1 < y2:
            miny, maxy = y1, y2
        else:
            miny, maxy = y2, y1
        w, h = maxx-minx, maxy-miny
        self.canvas.images[0].draw_line(self.gc, x1, y1, x2, y2)
        self.invalt(minx - self.pensize*self.tw.coord_scale/2 - 3,
                    miny - self.pensize*self.tw.coord_scale/2 - 3,
                    w + self.pensize*self.tw.coord_scale + 6,
                    h + self.pensize*self.tw.coord_scale + 6)

    def turn_turtle(self):
        self.tw.active_turtle.set_heading(self.heading)

    def move_turtle(self):
        x, y = self.width/2 + int(self.xcor), self.height/2 - int(self.ycor)
        self.tw.active_turtle.move((self.cx + x - 28, self.cy + y - 30))

    def invalt(self, x, y, w, h):
        rect = gtk.gdk.Rectangle(int(x+self.cx), int(y+self.cy), int(w),
                                 int(h))
        self.tw.area.invalidate_rect(rect, False)

    def set_turtle(self, k, colors=None):
        if not self.tw.turtles.dict.has_key(k):
            # if it is a new turtle, start it in the center of the screen
            self.tw.active_turtle = self.tw.turtles.get_turtle(k, True, colors)
            self.seth(0, False)
            self.setxy(0, 0, False)
            self.tw.active_turtle.set_pen_state(True)
        self.tw.active_turtle = self.tw.turtles.get_turtle(k, False)
        tx, ty = self.tw.active_turtle.get_xy()
        self.xcor = -self.width/2 + tx + 28
        self.ycor = self.height/2 - ty - 30
        self.heading = self.tw.active_turtle.get_heading()
        self.setcolor(self.tw.active_turtle.get_color(), False)
        self.setshade(self.tw.active_turtle.get_shade(), False)
        self.setpensize(self.tw.active_turtle.get_pen_size(), False)
        self.setpen(self.tw.active_turtle.get_pen_state(), False)

    def svg_close(self):
        if self.tw.svg_string == '':
            return
        self.svg.calc_w_h(False)
        self.tw.svg_string = "%s%s%s%s" % (self.svg.header(True),
                              self.svg.background("#%02x%02x%02x" %\
                              (self.bgrgb[0], self.bgrgb[1], self.bgrgb[2])),
                              self.tw.svg_string, self.svg.footer())