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Diffstat (limited to 'tacanvas.py')
| -rw-r--r-- | tacanvas.py | 446 |
1 files changed, 446 insertions, 0 deletions
diff --git a/tacanvas.py b/tacanvas.py new file mode 100644 index 0000000..473a136 --- /dev/null +++ b/tacanvas.py @@ -0,0 +1,446 @@ +#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()) |