#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) def calc_gray(c, g): if g == 100: return c return int(((c*g)+(32768*(100-g)))/100) 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.gray = 100 self.fill = False self.poly_points = [] self.svg = SVG() self.svg.set_fill_color('none') self.tw.svg_string = '' self.clearscreen(False) def start_fill(self): self.fill = True self.poly_points = [] def stop_fill(self): self.fill = False if len(self.poly_points) == 0: return minx = self.poly_points[0][0] miny = self.poly_points[0][1] maxx = minx maxy = miny for p in self.poly_points: if p[0] < minx: minx = p[0] elif p[0] > maxx: maxx = p[0] if p[1] < miny: miny = p[1] elif p[1] > maxy: maxy = p[1] w = maxx-minx h = maxy-miny self.canvas.images[0].draw_polygon(self.gc, True, self.poly_points) 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) self.poly_points = [] 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.setgray(100, 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() self.fill = False self.poly_points = [] 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 setgray(self, g, share=True): try: self.gray = g except: pass if self.gray < 0: self.gray = 0 if self.gray > 100: self.gray = 100 self.set_fgcolor() self.set_textcolor() self.tw.active_turtle.set_gray(self.gray) if self.tw.sharing() and share: self.tw.activity.send_event("g|%s" % \ (data_to_string([self.tw.nick, round_int(self.gray)]))) 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() self.fill = False self.poly_points = [] 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_gray(r, self.gray), calc_gray(g, self.gray),\ calc_gray(b, self.gray) 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) if self.fill and self.poly_points == []: self.poly_points.append((x1, y1)) if self.fill: self.poly_points.append((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.setgray(self.tw.active_turtle.get_gray(), 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())