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Diffstat (limited to 'tacanvas.py')
-rw-r--r-- | tacanvas.py | 596 |
1 files changed, 0 insertions, 596 deletions
diff --git a/tacanvas.py b/tacanvas.py deleted file mode 100644 index 03f69fc..0000000 --- a/tacanvas.py +++ /dev/null @@ -1,596 +0,0 @@ -#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 -import pango -import cairo - -from sprites import Sprite -from tasprite_factory import SVG -from tautils import image_to_base64, data_to_string, round_int -from taconstants import CANVAS_LAYER, DEFAULT_TURTLE, BLACK, WHITE - -import logging -_logger = logging.getLogger('turtleart-activity') - - -def wrap100(n): - """ A variant on mod... 101 -> 99; 199 -> 1 """ - n = int(n) - n %= 200 - if n > 99: - n = 199 - n - return n - - -def calc_shade(c, s): - """ Convert a color to the current shade (lightness/darkness). """ - if s < 0: - return int(c * (1 + s * 0.8)) - return int(c + (65536 - c) * s * 0.9) - - -def calc_gray(c, g): - """ Gray is a psuedo saturation calculation. """ - 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) - - -class TurtleGraphics: - """ A class for the Turtle graphics canvas """ - - def __init__(self, tw, width, height): - """ Create a sprite to hold the canvas. """ - self.tw = tw - self.width = width - self.height = height - if self.tw.interactive_mode: - self.canvas = Sprite(tw.sprite_list, 0, 0, - gtk.gdk.Pixmap(self.tw.area, self.width, self.height, -1)) - else: - self.canvas = Sprite(None, 0, 0, self.tw.window) - self.canvas.set_layer(CANVAS_LAYER) - (self.cx, self.cy) = self.canvas.get_xy() - self.canvas.type = 'canvas' - 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): - """ Start accumulating points of a polygon to fill. """ - self.fill = True - self.poly_points = [] - - def stop_fill(self): - """ Fill the polygon. """ - 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): - """Clear the canvas and reset most graphics attributes to defaults.""" - 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): - """ Move the turtle forward.""" - 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 TypeError, ValueError: - _logger.debug("bad value sent to %s" % (__name__)) - return - 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): - """ Set the turtle heading. """ - try: - self.heading = n - except TypeError, ValueError: - _logger.debug("bad value sent to %s" % (__name__)) - return - 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): - """ Rotate turtle clockwise """ - try: - self.heading += n - except TypeError, ValueError: - _logger.debug("bad value sent to %s" % (__name__)) - return - 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): - """ Draw an arc """ - 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 TypeError, ValueError: - _logger.debug("bad value sent to %s" % (__name__)) - return - 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): - """ draw a clockwise arc """ - 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): - """ draw a counter-clockwise arc """ - 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): - """ Move turtle to position x,y """ - x *= self.tw.coord_scale - y *= self.tw.coord_scale - try: - self.xcor, self.ycor = x, y - except TypeError, ValueError: - _logger.debug("bad value sent to %s" % (__name__)) - return - 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): - """ Set the pen size """ - try: - if ps < 0: - ps = 0 - self.pensize = ps - except TypeError, ValueError: - _logger.debug("bad value sent to %s" % (__name__)) - 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) - 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): - """ Set the pen color """ - try: - self.color = c - self.tcolor = c - except TypeError, ValueError: - _logger.debug("bad value sent to %s" % (__name__)) - return - 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): - """ Set the gray level """ - try: - self.gray = g - except TypeError, ValueError: - _logger.debug("bad value sent to %s" % (__name__)) - return - 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): - """ Set the text color """ - try: - self.tcolor = c - except TypeError, ValueError: - _logger.debug("bad value sent to %s" % (__name__)) - return - self.set_textcolor() - - def settextsize(self, c): - """ Set the text size """ - try: - self.tw.textsize = c - except TypeError, ValueError: - _logger.debug("bad value sent to %s" % (__name__)) - - def setshade(self, s, share=True): - """ Set the color shade """ - try: - self.shade = s - except TypeError, ValueError: - _logger.debug("bad value sent to %s" % (__name__)) - return - 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): - """ Fill screen with color/shade and reset to defaults """ - 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): - """ Set the foreground color """ - if self.color == WHITE or self.shade == WHITE: - r = 0xFF00 - g = 0xFF00 - b = 0xFF00 - elif self.color == BLACK or self.shade == BLACK: - r = 0x0000 - g = 0x0000 - b = 0x0000 - else: - sh = (wrap100(self.shade) - 50) / 50.0 - rgb = color_table[wrap100(self.color)] - r = (rgb >> 8) & 0xff00 - r = calc_gray(r, self.gray) - r = calc_shade(r, sh) - g = rgb & 0xff00 - g = calc_gray(g, self.gray) - g = calc_shade(g, sh) - b = (rgb << 8) & 0xff00 - b = calc_gray(b, self.gray) - b = 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): - """ Set the text color """ - 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): - """ Lower or raise the pen """ - 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): - """ Draw a pixbuf """ - 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): - """ Draw text """ - 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 TypeError, ValueError: - _logger.debug("bad value sent to %s" % (__name__)) - return - if self.tw.interactive_mode: - 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) - else: # pixmap doesn't support pango - message = str(label).replace("\0"," ") - context = self.canvas.images[0].cairo_create() - context.set_font_size(size) - q, k, w, h = context.text_extents(message)[:4] - context.set_source_rgb(0, 0, 0) - context.move_to(x, y + h) - context.show_text(message) - - 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): - """ 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) - 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): - """ Change the orientation of the turtle """ - self.tw.active_turtle.set_heading(self.heading) - - def move_turtle(self): - """ Move the turtle """ - 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): - """ Mark a region for refresh """ - if self.tw.interactive_mode: - self.tw.area.invalidate_rect(gtk.gdk.Rectangle(int(x + self.cx), - int(y + self.cy), - int(w), int(h)), - False) - - def set_turtle(self, k, colors=None): - """ Select the current turtle and associated pen status """ - 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): - """ Close current SVG graphic """ - 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()) |