diff options
Diffstat (limited to 'TurtleArt/tacanvas.py')
| -rw-r--r-- | TurtleArt/tacanvas.py | 227 |
1 files changed, 144 insertions, 83 deletions
diff --git a/TurtleArt/tacanvas.py b/TurtleArt/tacanvas.py index d4395a2..79bdd04 100644 --- a/TurtleArt/tacanvas.py +++ b/TurtleArt/tacanvas.py @@ -1,5 +1,5 @@ #Copyright (c) 2007-8, Playful Invention Company. -#Copyright (c) 2008-10, Walter Bender +#Copyright (c) 2008-11, Walter Bender #Copyright (c) 2011 Collabora Ltd. <http://www.collabora.co.uk/> #Permission is hereby granted, free of charge, to any person obtaining a copy @@ -24,10 +24,11 @@ import gtk from math import sin, cos, pi import pango import cairo +import base64 from sprites import Sprite from tasprite_factory import SVG -from tautils import image_to_base64, data_to_string, round_int +from tautils import image_to_base64, get_path, data_to_string, round_int from taconstants import CANVAS_LAYER, BLACK, WHITE import logging @@ -43,6 +44,23 @@ def wrap100(n): return n +def calc_poly_bounds(poly_points): + """ Calculate the minx, miny, width, height of polygon """ + minx = poly_points[0][0] + miny = poly_points[0][1] + maxx, maxy = minx, miny + for p in 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] + return(minx, miny, maxx - minx, maxy - miny) + + def calc_shade(c, s, invert=False): """ Convert a color to the current shade (lightness/darkness). """ # Assumes 16 bit input values @@ -148,27 +166,24 @@ class TurtleGraphics: 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.fill_polygon(self.poly_points) + if self.tw.sharing(): + shared_poly_points = [] + for p in self.poly_points: + shared_poly_points.append((self.screen_to_turtle_coordinates( + p[0], p[1]))) + event = "F|%s" % (data_to_string([self._get_my_nick(), + shared_poly_points])) + self.tw.send_event(event) + self.poly_points = [] + + def fill_polygon(self, poly_points): + minx, miny, w, h = calc_poly_bounds(poly_points) + self.canvas.images[0].draw_polygon(self.gc, True, 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): """Clear the canvas and reset most graphics attributes to defaults.""" @@ -215,13 +230,14 @@ class TurtleGraphics: 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.invert_y_coordinate(oldy)) self.tw.svg_string += self.svg.line_to(self.xcor, - self.height / 2 - self.ycor) + self.invert_y_coordinate(self.ycor)) self.tw.svg_string += "\"\n" self.tw.svg_string += self.svg.style() - event = "f|%s" % (data_to_string([self._get_my_nick(), int(n)])) - self._send_event(event, share) + if self.tw.sharing() and share: + event = "f|%s" % (data_to_string([self._get_my_nick(), int(n)])) + self.tw.send_event(event) def seth(self, n, share=True): """ Set the turtle heading. """ @@ -232,8 +248,10 @@ class TurtleGraphics: return self.heading %= 360 self.turn_turtle() - event = "r|%s" % (data_to_string([self._get_my_nick(), round_int(self.heading)])) - self._send_event(event, share) + if self.tw.sharing() and share: + event = "r|%s" % (data_to_string([self._get_my_nick(), + round_int(self.heading)])) + self.tw.send_event(event) def right(self, n, share=True): """ Rotate turtle clockwise """ @@ -244,8 +262,10 @@ class TurtleGraphics: return self.heading %= 360 self.turn_turtle() - event = "r|%s" % (data_to_string([self._get_my_nick(), round_int(self.heading)])) - self._send_event(event, share) + if self.tw.sharing() and share: + event = "r|%s" % (data_to_string([self._get_my_nick(), + round_int(self.heading)])) + self.tw.send_event(event) def arc(self, a, r, share=True): """ Draw an arc """ @@ -260,8 +280,10 @@ class TurtleGraphics: _logger.debug("bad value sent to %s" % (__name__)) return self.move_turtle() - event = "a|%s" % (data_to_string([self._get_my_nick(), [round_int(a), round_int(r)]])) - self._send_event(event, share) + if self.tw.sharing() and share: + event = "a|%s" % (data_to_string([self._get_my_nick(), + [round_int(a), round_int(r)]])) + self.tw.send_event(event) def rarc(self, a, r): """ draw a clockwise arc """ @@ -274,8 +296,7 @@ class TurtleGraphics: 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) + x, y = self.turtle_to_screen_coordinates(int(cx - r), int(cy + r)) w = int(2 * r) h = w if self.pendown: @@ -290,9 +311,10 @@ class TurtleGraphics: 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.invert_y_coordinate(oldx)) self.tw.svg_string += self.svg.arc_to(self.xcor, - self.height / 2 - self.ycor, r, a, 0, s) + self.invert_y_coordinate(self.ycor), + r, a, 0, s) self.tw.svg_string += "\"\n" self.tw.svg_string += self.svg.style() @@ -307,8 +329,7 @@ class TurtleGraphics: 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) + x, y = self.turtle_to_screen_coordinates(int(cx - r), int(cy + r)) w = int(2 * r) h = w if self.pendown: @@ -324,9 +345,9 @@ class TurtleGraphics: 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.invert_y_coordinate(oldy)) self.tw.svg_string += self.svg.arc_to(self.xcor, - self.height / 2 - self.ycor, + self.invert_y_coordinate(self.ycor), r, a, 0, s) self.tw.svg_string += "\"\n" self.tw.svg_string += self.svg.style() @@ -347,8 +368,10 @@ class TurtleGraphics: self.draw_line(oldx, oldy, self.xcor, self.ycor) self.move_turtle() - event = "x|%s" % (data_to_string([self._get_my_nick(), [round_int(x), round_int(y)]])) - self._send_event(event, share) + if self.tw.sharing() and share: + event = "x|%s" % (data_to_string([self._get_my_nick(), + [round_int(x), round_int(y)]])) + self.tw.send_event(event) def setpensize(self, ps, share=True): """ Set the pen size """ @@ -361,10 +384,12 @@ class TurtleGraphics: return 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) + gtk.gdk.LINE_SOLID, gtk.gdk.CAP_ROUND, gtk.gdk.JOIN_MITER) self.svg.set_stroke_width(self.pensize) - event = "w|%s" % (data_to_string([self._get_my_nick(), round_int(ps)])) - self._send_event(event, share) + if self.tw.sharing() and share: + event = "w|%s" % (data_to_string([self._get_my_nick(), + round_int(ps)])) + self.tw.send_event(event) def setcolor(self, c, share=True): """ Set the pen color """ @@ -377,8 +402,10 @@ class TurtleGraphics: self.tw.active_turtle.set_color(c) self.set_fgcolor() self.set_textcolor() - event = "c|%s" % (data_to_string([self._get_my_nick(), round_int(c)])) - self._send_event(event, share) + if self.tw.sharing() and share: + event = "c|%s" % (data_to_string([self._get_my_nick(), + round_int(c)])) + self.tw.send_event(event) def setgray(self, g, share=True): """ Set the gray level """ @@ -394,10 +421,12 @@ class TurtleGraphics: self.set_fgcolor() self.set_textcolor() self.tw.active_turtle.set_gray(self.gray) - event = "g|%s" % (data_to_string([self._get_my_nick(), round_int(self.gray)])) - self._send_event(event, share) + if self.tw.sharing() and share: + event = "g|%s" % (data_to_string([self._get_my_nick(), + round_int(self.gray)])) + self.tw.send_event(event) - def settextcolor(self, c): + def settextcolor(self, c): # depreciated """ Set the text color """ try: self.tcolor = c @@ -423,8 +452,10 @@ class TurtleGraphics: self.tw.active_turtle.set_shade(s) self.set_fgcolor() self.set_textcolor() - event = "s|%s" % (data_to_string([self._get_my_nick(), round_int(s)])) - self._send_event(event, share) + if self.tw.sharing() and share: + event = "s|%s" % (data_to_string([self._get_my_nick(), + round_int(s)])) + self.tw.send_event(event) def fillscreen(self, c, s): """ Fill screen with color/shade and reset to defaults """ @@ -479,10 +510,11 @@ class TurtleGraphics: """ Lower or raise the pen """ self.pendown = bool self.tw.active_turtle.set_pen_state(bool) - event = "p|%s" % (data_to_string([self._get_my_nick(), bool])) - self._send_event(event, share) + if self.tw.sharing() and share: + event = "p|%s" % (data_to_string([self._get_my_nick(), bool])) + self.tw.send_event(event) - def draw_pixbuf(self, pixbuf, a, b, x, y, w, h, path): + def draw_pixbuf(self, pixbuf, a, b, x, y, w, h, path, share=True): """ Draw a pixbuf """ w *= self.tw.coord_scale h *= self.tw.coord_scale @@ -492,12 +524,31 @@ class TurtleGraphics: 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)) + y, w, h, path, image_to_base64(pixbuf, + get_path(self.tw.activity, 'instance'))) else: + # Outside of Sugar, we save a path self.tw.svg_string += self.svg.image(x - self.width / 2, y, w, h, path) - - def draw_text(self, label, x, y, size, w): + if self.tw.sharing() and share: + if self.tw.running_sugar: + tmp_path = get_path(self.tw.activity, 'instance') + else: + tmp_path = '/tmp' + data = image_to_base64(pixbuf, tmp_path) + height = pixbuf.get_height() + width = pixbuf.get_width() + x, y = self.screen_to_turtle_coordinates(x, y) + event = "P|%s" % (data_to_string([self._get_my_nick(), + [round_int(a), round_int(b), + round_int(x), round_int(y), + round_int(w), round_int(h), + round_int(width), + round_int(height), + data]])) + self.tw.send_event(event) + + def draw_text(self, label, x, y, size, w, share=True): """ Draw text """ w *= self.tw.coord_scale self.gc.set_foreground(self.tw.textcolor) @@ -532,27 +583,47 @@ class TurtleGraphics: if self.tw.saving_svg and self.pendown: self.tw.svg_string += self.svg.text(x - self.width / 2, y + size, size, w, label) + if self.tw.sharing() and share: + event = "W|%s" % (data_to_string([self._get_my_nick(), + [label, round_int(x), + round_int(y), round_int(size), + round_int(w)]])) + self.tw.send_event(event) + + def turtle_to_screen_coordinates(self, x, y): + """ The origin of turtle coordinates is the center of the screen """ + return self.width / 2 + x, self.invert_y_coordinate(y) + + def screen_to_turtle_coordinates(self, x, y): + """ The origin of the screen coordinates is the upper left corner """ + return x - self.width / 2, self.invert_y_coordinate(y) + + def invert_y_coordinate(self, y): + """ Positive y goes up in turtle coordinates, down in sceeen + coordinates """ + return self.height / 2 - y def draw_line(self, x1, y1, x2, y2): """ Draw a line """ - x1, y1 = self.width / 2 + int(x1), self.height / 2 - int(y1) - x2, y2 = self.width / 2 + int(x2), self.height / 2 - int(y2) + x1, y1 = self.turtle_to_screen_coordinates(x1, y1) + x2, y2 = self.turtle_to_screen_coordinates(x2, y2) if x1 < x2: - minx, maxx = x1, x2 + minx, maxx = int(x1), int(x2) else: - minx, maxx = x2, x1 + minx, maxx = int(x2), int(x1) if y1 < y2: - miny, maxy = y1, y2 + miny, maxy = int(y1), int(y2) else: - miny, maxy = y2, y1 + miny, maxy = int(y2), int(y1) w, h = maxx - minx, maxy - miny - self.canvas.images[0].draw_line(self.gc, x1, y1, x2, y2) + self.canvas.images[0].draw_line(self.gc, int(x1), int(y1), int(x2), + int(y2)) if self.fill and self.poly_points == []: - self.poly_points.append((x1, y1)) + self.poly_points.append((int(x1), int(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, + self.poly_points.append((int(x2), int(y2))) + self.invalt(minx - int(self.pensize * self.tw.coord_scale / 2) - 3, + miny - int(self.pensize * self.tw.coord_scale / 2) - 3, w + self.pensize * self.tw.coord_scale + 6, h + self.pensize * self.tw.coord_scale + 6) @@ -562,8 +633,7 @@ class TurtleGraphics: def move_turtle(self): """ Move the turtle """ - x, y = self.width / 2 + int(self.xcor), \ - self.height / 2 - int(self.ycor) + x, y = self.turtle_to_screen_coordinates(self.xcor, self.ycor) self.tw.active_turtle.move( (int(self.cx + x - self.tw.active_turtle.spr.rect.width / 2), int(self.cy + y - self.tw.active_turtle.spr.rect.height / 2))) @@ -611,9 +681,9 @@ class TurtleGraphics: def get_pixel(self): """ Read the pixel at x, y """ if self.tw.interactive_mode: - return self.canvas.get_pixel( - (self.width / 2 + int(self.xcor), - self.height / 2 - int(self.ycor)), 0, self.tw.color_mode) + x, y = self.turtle_to_screen_coordinates(self.xcor, self.ycor) + return self.canvas.get_pixel((int(x), int(y)), 0, + self.tw.color_mode) else: return(-1, -1, -1, -1) @@ -628,10 +698,9 @@ class TurtleGraphics: self.tw.active_turtle = self.tw.turtles.get_turtle(k, False) self.tw.active_turtle.show() tx, ty = self.tw.active_turtle.get_xy() - self.xcor = -self.width / 2 + tx + \ - self.tw.active_turtle.spr.rect.width / 2 - self.ycor = self.height / 2 - ty - \ - self.tw.active_turtle.spr.rect.height / 2 + self.xcor, self.ycor = self.screen_to_turtle_coordinates(tx, ty) + self.xcor += self.tw.active_turtle.spr.rect.width / 2 + self.ycor -= self.tw.active_turtle.spr.rect.height / 2 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) @@ -651,11 +720,3 @@ class TurtleGraphics: def _get_my_nick(self): return self.tw.nick - - def _send_event(self, entry, share): - if not share: - return - - if self.tw.sharing(): - print "Sending: %s" % entry - self.tw.send_event(entry) |