/usr/share/pyshared/advancedcaching/gtkmap.py is in agtl 0.8.0.3-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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# -*- coding: utf-8 -*-
# Copyright (C) 2010 Daniel Fett
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
#
# Author: Daniel Fett agtl@danielfett.de
# Jabber: fett.daniel@jaber.ccc.de
# Bugtracker and GIT Repository: http://github.com/webhamster/advancedcaching
#
import logging
import math
from abstractmap import AbstractGeocacheLayer
from abstractmap import AbstractMap
from abstractmap import AbstractMapLayer
from abstractmap import AbstractMarksLayer
import cairo
import geo
import geocaching
import gobject
import gtk
import openstreetmap
import pango
import threadpool
logger = logging.getLogger('gtkmap')
class Map(gtk.DrawingArea, AbstractMap):
MIN_DRAG_REDRAW_DISTANCE = 5
DRAG_RECHECK_SPEED = 20
LAZY_SET_CENTER_DIFFERENCE = 0.1 # * screen (width|height)
def __init__(self, center, zoom, tile_loader=None, draggable=True):
gtk.DrawingArea.__init__(self)
AbstractMap.__init__(self, center, zoom, tile_loader)
self.connect("expose_event", self.__expose_event)
self.connect("configure_event", self.__configure_event)
self.connect("button_press_event", self.__drag_start)
self.connect("scroll_event", self.__scroll)
self.connect("button_release_event", self.__drag_end)
if draggable:
self.connect("motion_notify_event", self.__drag)
self.set_events(gtk.gdk.EXPOSURE_MASK | gtk.gdk.BUTTON_PRESS_MASK | gtk.gdk.BUTTON_RELEASE_MASK | gtk.gdk.POINTER_MOTION_MASK | gtk.gdk.SCROLL)
try:
gobject.signal_new('tile-loader-changed', Map, gobject.SIGNAL_RUN_FIRST, gobject.TYPE_NONE, (gobject.TYPE_PYOBJECT, ))
gobject.signal_new('map-dragged', Map, gobject.SIGNAL_RUN_FIRST, gobject.TYPE_NONE, ())
gobject.signal_new('draw-marks', Map, gobject.SIGNAL_RUN_FIRST, gobject.TYPE_NONE, (gobject.TYPE_PYOBJECT,))
except RuntimeError:
pass
self.surface_buffer = {}
self.delay_expose = False
self.tile_loader_threadpool = threadpool.ThreadPool(openstreetmap.CONCURRENT_THREADS * 2)
#self.ts = openstreetmap.TileServer(self.tile_loader)
self.drawing_area_configured = self.drawing_area_arrow_configured = False
self.modify_bg(gtk.STATE_NORMAL, gtk.gdk.color_parse("white"))
##############################################
#
# Map actions
#
##############################################
def redraw_layers(self):
if self.dragging:
return
self.__draw_layers()
self.refresh()
def refresh(self):
if self.dragging:
return
self.queue_draw()
##############################################
#
# Expose & Configure
#
##############################################
def __expose_event(self, widget, event):
if self.dragging or self.delay_expose:
return True
x, y, width, height = event.area
cr = self.cr_drawing_area
#cr.clip()
#import time
#start = time.time()
#for i in xrange(50):
cr = self.window.cairo_create()
cr.rectangle(x, y, width, height)
cr.save()
cr.clip()
cr.set_source_surface(self.cr_drawing_area_map)
cr.paint()
for l in self.layers:
if l.result == None:
continue
cr.set_source_surface(l.result)
cr.paint()
cr.restore()
#end = time.time()
#print end - start
#import sys
#sys.exit(0)
#widget.window.draw_drawable(self.xgc, self.pixmap, x, y, x, y, width, height)
return False
def __configure_event(self, widget, event):
x, y, width, height = widget.get_allocation()
self.map_width = int(width + 2 * width * self.MAP_FACTOR)
self.map_height = int(height + 2 * height * self.MAP_FACTOR)
self.pixmap = gtk.gdk.Pixmap(widget.window, self.map_width, self.map_height)
self.cr_marks = cairo.ImageSurface(cairo.FORMAT_ARGB32, self.map_width, self.map_height)
self.cr_osd = cairo.ImageSurface(cairo.FORMAT_ARGB32, self.map_width, self.map_height)
self.cr_drawing_area_map = cairo.ImageSurface(cairo.FORMAT_ARGB32, self.map_width, self.map_height)
self.cr_drawing_area = self.pixmap.cairo_create()#widget.window.cairo_create()
self.cr_window = self.window.cairo_create()
self.xgc = widget.window.new_gc()
self.drawing_area_configured = True
self.draw_at_x = 0
self.draw_at_y = 0
self.draw_root_x = int(-width * self.MAP_FACTOR)
self.draw_root_y = int(-height * self.MAP_FACTOR)
for l in self.layers:
l.resize()
gobject.idle_add(self._draw_map)
##############################################
#
# User Input
#
##############################################
def __scroll(self, widget, event):
if event.direction == gtk.gdk.SCROLL_DOWN:
self.relative_zoom(-1)
else:
self.relative_zoom(+ 1)
def __drag_start(self, widget, event):
try:
while True:
x = self.active_tile_loaders.pop()
x.halt()
except IndexError:
pass
cr = self.cr_drawing_area
cr.set_source_surface(self.cr_drawing_area_map)
cr.paint()
cr.set_source_surface(self.cr_marks)
cr.paint()
self.window.draw_drawable(self.xgc, self.pixmap, 0, 0, 0, 0, -1, -1)
self.drag_start_x = int(event.x)
self.drag_start_y = int(event.y)
self.drag_offset_x = 0
self.drag_offset_y = 0
self.last_drag_offset_x = 0
self.last_drag_offset_y = 0
self.dragging = True
gobject.timeout_add(self.DRAG_RECHECK_SPEED, self.__drag_draw)
def __drag(self, widget, event):
if not self.dragging:
return True
self.drag_offset_x = self.drag_start_x - int(event.x)
self.drag_offset_y = self.drag_start_y - int(event.y)
return True
def __drag_draw(self):
if not self.dragging:
return False
delta = math.sqrt((self.last_drag_offset_x - self.drag_offset_x) ** 2 + (self.last_drag_offset_y - self.drag_offset_y) ** 2)
if delta < self.MIN_DRAG_REDRAW_DISTANCE:
return True
self.last_drag_offset_x = self.drag_offset_x
self.last_drag_offset_y = self.drag_offset_y
x, y, width, height = self.get_allocation()
self.window.clear()
self.window.draw_drawable(gc=self.xgc,
src=self.pixmap,
xsrc=0,
ysrc=0,
xdest=self.draw_at_x - self.drag_offset_x,
ydest=self.draw_at_y - self.drag_offset_y,
width=width,
height=height)
return True
def __drag_end(self, widget, event):
if not self.dragging:
return
self.dragging = False
offset_x = self.drag_offset_x #(self.drag_start_x - event.x)
offset_y = self.drag_offset_y #(self.drag_start_y - event.y)
self._move_map_relative(offset_x, offset_y)
if self._check_click(offset_x, offset_y, event.x, event.y):
self.draw_at_x -= offset_x
self.draw_at_y -= offset_y
else:
self.emit('map-dragged')
self.draw_at_x = self.draw_at_y = 0
if offset_x != 0 or offset_y != 0:
self._draw_map()
##############################################
#
# Map Drawing
#
##############################################
def _draw_map(self):
if not self.drawing_area_configured:
return False
if self.map_width == 0 or self.map_height == 0:
return
try:
while True:
x = self.active_tile_loaders.pop()
x.halt()
except IndexError:
pass
zoom = self.zoom
size = self.tile_loader.TILE_SIZE
xi = int(self.map_center_x)
yi = int(self.map_center_y)
span_x = int(math.ceil(float(self.map_width) / (size * 2.0)))
span_y = int(math.ceil(float(self.map_height) / (size * 2.0)))
offset_x = int(self.map_width / 2 - (self.map_center_x - int(self.map_center_x)) * size)
offset_y = int(self.map_height / 2 -(self.map_center_y - int(self.map_center_y)) * size)
undersample = self.double_size
requests = []
new_surface_buffer = {}
old_surface_buffer = self.surface_buffer
tiles = []
for i in xrange(-span_x, span_x + 1, 1):
for j in xrange(-span_y, span_y + 1, 1):
tile = (xi + i, yi + j)
dx = i * size + offset_x
dy = j * size + offset_y
id_string = self.__get_id_string(tile, zoom, undersample)
tile = self.check_bounds(*tile)
if tile in tiles:
continue
if id_string in old_surface_buffer and old_surface_buffer[id_string][0] != self.tile_loader.noimage_cantload and old_surface_buffer[id_string][0] != self.tile_loader.noimage_loading:
new_surface_buffer[id_string] = old_surface_buffer[id_string]
new_surface_buffer[id_string][1:3] = dx, dy
else:
requests.append(((id_string, tile, zoom, undersample, dx, dy, self._add_to_buffer), {}))
self.surface_buffer = new_surface_buffer
reqs = threadpool.makeRequests(self.__run_tile_loader, requests)
cr = gtk.gdk.CairoContext(cairo.Context(self.cr_drawing_area_map))
cr.set_source_rgba(0, 0, 0, 1)
self.delay_expose = True
cr.paint()
for r in reqs:
self.tile_loader_threadpool.putRequest(r)
self.__draw_layers()
self.__draw_tiles()
def __get_id_string(self, tile, display_zoom, undersample):
return (self.tile_loader.PREFIX, tile[0], tile[1], display_zoom, 1 if undersample else 0)
@staticmethod
def _load_tile(filename):
surface = cairo.ImageSurface.create_from_png(filename)
if surface.get_width() != surface.get_height():
raise Exception("Image too small, probably corrupted file")
return surface
def __run_tile_loader(self, id_string, tile, zoom, undersample, x, y, callback_draw):
d = self.tile_loader(id_string=id_string, tile=tile, zoom=zoom, undersample=undersample, x=x, y=y, callback_draw=callback_draw, callback_load=self._load_tile)
self.active_tile_loaders.append(d)
d.run()
def _add_to_buffer(self, id_string, surface, x, y, scale_source=None):
self.surface_buffer[id_string] = [surface, x, y, scale_source]
self.__draw_tiles(which=([surface, x, y, scale_source], ))
def __draw_tiles(self, which=None, off_x=0, off_y=0):
self.delay_expose = False
cr = gtk.gdk.CairoContext(cairo.Context(self.cr_drawing_area_map))
if which == None:
which = self.surface_buffer.values()
for surface, x, y, scale_source in which:
if surface == None:
print "pbuf was none!"
return
size = self.tile_loader.TILE_SIZE
if scale_source == None:
cr.set_source_surface(surface, x + off_x, y + off_y)
else:
xs, ys = scale_source
imgpat = cairo.SurfacePattern(surface)
imgpat.set_filter(cairo.FILTER_BEST)
scale = cairo.Matrix()
scale.translate(xs, ys)
scale.scale(0.5, 0.5)
scale.translate(-x + off_x, -y + off_y)
imgpat.set_matrix(scale)
cr.set_source(imgpat)
cr.rectangle(max(0, x + off_x), max(0, y + off_y), min(size + x, size, self.map_width - x + size), min(size + y, size, self.map_height - y + size))
cr.fill()
self.queue_draw_area(max(0, x + off_x), max(0, y + off_y), min(size + x, size, self.map_width - x + size), min(size + y, size, self.map_height - y + size))
return False
##############################################
#
# Drawing marks & osd
#
##############################################
def __draw_layers(self):
if not self.drawing_area_configured:
return False
for l in self.layers:
l.draw()
class SingleMarkLayer(AbstractMapLayer):
COLOR_TARGET = gtk.gdk.color_parse('darkblue')
COLOR_TARGET_SHADOW = gtk.gdk.color_parse('white')
def __init__(self, coordinate):
AbstractMapLayer.__init__(self)
self.coord = coordinate
def draw(self):
surface = cairo.ImageSurface(cairo.FORMAT_ARGB32, self.map.map_width, self.map.map_height)
cr = gtk.gdk.CairoContext(cairo.Context(surface))
self.result = surface
t = self.map.coord2point(self.coord)
if not self.map.point_in_screen(t):
return
radius_o = 15
radius_i = 3
radius_c = 10
cr.move_to(t[0] - radius_o, t[1])
cr.line_to(t[0] - radius_i, t[1])
cr.move_to(t[0] + radius_o, t[1])
cr.line_to(t[0] + radius_i, t[1])
cr.move_to(t[0], t[1] + radius_o)
cr.line_to(t[0], t[1] + radius_i)
cr.move_to(t[0], t[1] - radius_o)
cr.line_to(t[0], t[1] - radius_i)
cr.new_sub_path()
cr.arc(t[0], t[1], radius_c, 0, math.pi * 2)
cr.set_source_color(self.COLOR_TARGET_SHADOW)
cr.set_line_width(3)
cr.stroke_preserve()
cr.set_source_color(self.COLOR_TARGET)
cr.set_line_width(2)
cr.stroke()
class OsdLayer(AbstractMapLayer):
MESSAGE_DRAW_FONT = pango.FontDescription("Sans 5")
MESSAGE_DRAW_COLOR = gtk.gdk.color_parse('black')
COLOR_OSD_SECONDARY = gtk.gdk.color_parse("white")
COLOR_OSD_MAIN = gtk.gdk.color_parse("black")
@staticmethod
def set_layout(message_draw_font, message_draw_color):
OsdLayer.MESSAGE_DRAW_FONT = message_draw_font
OsdLayer.MESSAGE_DRAW_COLOR = message_draw_color
def draw(self):
surface = cairo.ImageSurface(cairo.FORMAT_ARGB32, self.map.map_width, self.map.map_height)
cr = gtk.gdk.CairoContext(cairo.Context(surface))
# message
if self.map.osd_message != None:
cr.set_source_color(self.MESSAGE_DRAW_COLOR)
layout = self.map.create_pango_layout(self.map.osd_message)
layout.set_font_description(self.MESSAGE_DRAW_FONT)
cr.move_to(20, 20)
cr.show_layout(layout)
# scale bar
position = (20, self.map.map_height - 28)
center = self.map.get_center()
mpp = self.map.get_meters_per_pixel(center.lat)
avglength = self.map.map_width / 5
first_length_meters = mpp * avglength
final_length_meters = round(first_length_meters, int(-math.floor(math.log(first_length_meters, 10) + 0.00001)))
final_length_pixels = final_length_meters / mpp
cr.move_to(position[0], position[1] + 10)
cr.line_to(position[0] + final_length_pixels, position[1] + 10)
cr.set_line_width(5)
cr.set_source_color(self.COLOR_OSD_SECONDARY)
cr.stroke_preserve()
cr.set_line_width(3)
cr.set_source_color(self.COLOR_OSD_MAIN)
cr.stroke_preserve()
cr.set_source_color(self.MESSAGE_DRAW_COLOR)
if final_length_meters < 10000:
msg = "%d m" % final_length_meters
else:
msg = "%d km" % (final_length_meters / 1000)
layout = self.map.create_pango_layout(msg)
layout.set_font_description(self.MESSAGE_DRAW_FONT)
cr.move_to(position[0], position[1] - 15)
cr.show_layout(layout)
self.result = surface
logger = logging.getLogger('geocachelayer')
class GeocacheLayer(AbstractGeocacheLayer):
CACHE_DRAW_FONT = pango.FontDescription("Sans 10")
CACHE_DRAW_FONT_COLOR = gtk.gdk.color_parse('black')
# map markers colors
COLOR_MARKED = gtk.gdk.color_parse('yellow')
COLOR_DEFAULT = gtk.gdk.color_parse('blue')
COLOR_FOUND = gtk.gdk.color_parse('grey')
COLOR_REGULAR = gtk.gdk.color_parse('green')
COLOR_MULTI = gtk.gdk.color_parse('orange')
COLOR_CACHE_CENTER = gtk.gdk.color_parse('black')
COLOR_CURRENT_CACHE = gtk.gdk.color_parse('red')
COLOR_WAYPOINTS = gtk.gdk.color_parse('deeppink')
def draw(self):
surface = cairo.ImageSurface(cairo.FORMAT_ARGB32, self.map.map_width, self.map.map_height)
cr = gtk.gdk.CairoContext(cairo.Context(surface))
coords = self.get_geocaches_callback(self.map.get_visible_area(), self.MAX_NUM_RESULTS_SHOW)
if self.map.get_zoom() < self.CACHES_ZOOM_LOWER_BOUND:
self.map.set_osd_message('Zoom in to see geocaches.')
self.visualized_geocaches = []
self.result = surface
return
elif len(coords) >= self.MAX_NUM_RESULTS_SHOW:
self.map.set_osd_message('Too many geocaches to display.')
self.visualized_geocaches = []
self.result = surface
return
self.map.set_osd_message(None)
self.visualized_geocaches = coords
draw_short = (len(coords) > self.TOO_MANY_POINTS)
default_radius = self.CACHE_DRAW_SIZE
found, regular, multi, default = self.COLOR_FOUND, self.COLOR_REGULAR, self.COLOR_MULTI, self.COLOR_DEFAULT
for c in coords: # for each geocache
radius = default_radius
if c.found:
color = found
elif c.type == geocaching.GeocacheCoordinate.TYPE_REGULAR:
color = regular
elif c.type == geocaching.GeocacheCoordinate.TYPE_MULTI:
color = multi
else:
color = default
cr.set_source_color(color)
p = self.map.coord2point(c)
if c.alter_lat != None and (c.alter_lat != 0 and c.alter_lon != 0):
x = self.map.coord2point(geo.Coordinate(c.alter_lat, c.alter_lon))
if x != p:
cr.move_to(p[0], p[1])
cr.line_to(x[0], x[1])
cr.set_line_width(2)
cr.stroke()
if draw_short:
radius = radius / 2.0
if c.marked:
cr.set_source_rgba(1, 1, 0, 0.5)
cr.rectangle(p[0] - radius, p[1] - radius, radius * 2, radius * 2)
cr.fill()
cr.set_source_color(color)
cr.set_line_width(4)
cr.rectangle(p[0] - radius, p[1] - radius, radius * 2, radius * 2)
cr.stroke()
if draw_short:
continue
# if we have a description for this cache...
if c.was_downloaded():
# draw something like:
# ----
# ----
# ----
# besides the icon
width = 6
dist = 3
count = 3
pos_x = p[0] + radius + 3 + 1
pos_y = p[1] + radius - (dist * count) + dist
cr.set_line_width(1)
for i in xrange(count):
cr.move_to(pos_x, pos_y + dist * i)
cr.line_to(pos_x + width, pos_y + dist * i)
cr.set_line_width(2)
cr.stroke()
# if this cache is the active cache
if self.current_cache != None and c.name == self.current_cache.name:
cr.set_line_width(1)
cr.set_source_color(self.COLOR_CURRENT_CACHE)
#radius = 7
radius_outline = radius + 3
cr.rectangle(p[0] - radius_outline, p[1] - radius_outline, radius_outline * 2, radius_outline * 2)
cr.stroke()
# if this cache is disabled
if c.status == geocaching.GeocacheCoordinate.STATUS_DISABLED:
cr.set_line_width(3)
cr.set_source_color(self.COLOR_CURRENT_CACHE)
radius_disabled = 7
cr.move_to(p[0]-radius_disabled, p[1]-radius_disabled)
cr.line_to(p[0] + radius_disabled, p[1] + radius_disabled)
cr.stroke()
# print the name?
if self.show_name:
layout = self.map.create_pango_layout(AbstractGeocacheLayer.shorten_name(c.title, 20))
layout.set_font_description(self.CACHE_DRAW_FONT)
width, height = layout.get_pixel_size()
cr.move_to(p[0] + 4 + radius, p[1] - height + 2)
#cr.set_line_width(1)
cr.set_source_color(self.CACHE_DRAW_FONT_COLOR)
cr.show_layout(layout)
cr.set_source_color(self.COLOR_CACHE_CENTER)
cr.set_line_width(1)
cr.move_to(p[0], p[1] - 3)
cr.line_to(p[0], p[1] + 3) # |
cr.move_to(p[0] - 3, p[1],)
cr.line_to(p[0] + 3, p[1]) # ---
cr.stroke()
# draw additional waypoints
# --> print description!
if self.current_cache != None and self.current_cache.get_waypoints() != None:
cr.set_source_color(self.COLOR_WAYPOINTS)
cr.set_line_width(1)
radius = 5
num = 0
for w in self.current_cache.get_waypoints():
if w['lat'] != -1 and w['lon'] != -1:
num = num + 1
p = self.map.coord2point(geo.Coordinate(w['lat'], w['lon']))
if not self.map.point_in_screen(p):
continue
cr.move_to(p[0], p[1] - radius)
cr.line_to(p[0], p[1] + radius) # |
#cr.stroke()
cr.move_to(p[0] - radius, p[1])
cr.line_to(p[0] + radius, p[1]) # ---
#cr.stroke()
cr.arc(p[0], p[1], radius, 0, math.pi * 2)
layout = self.map.create_pango_layout('')
layout.set_markup('<i>%s</i>' % (w['id']))
layout.set_font_description(self.CACHE_DRAW_FONT)
cr.move_to(p[0] + 3 + radius, p[1] - 3 - radius)
#cr.set_line_width(1)
cr.set_source_color(self.COLOR_WAYPOINTS)
cr.show_layout(layout)
cr.stroke()
self.result = surface
logger = logging.getLogger('markslayer')
class MarksLayer(AbstractMarksLayer):
SIZE_CURRENT_POSITION = 3
COLOR_CURRENT_POSITION = gtk.gdk.color_parse('green')
COLOR_CURRENT_POSITION_NO_FIX = gtk.gdk.color_parse('red')
COLOR_TARGET = gtk.gdk.color_parse('darkblue')
COLOR_TARGET_SHADOW = gtk.gdk.color_parse('white')
COLOR_CROSSHAIR = gtk.gdk.color_parse("black")
COLOR_LINE_INVERT = gtk.gdk.color_parse("blue")
COLOR_ACCURACY = gtk.gdk.color_parse("orange")
COLOR_DIRECTION_ARROW = gtk.gdk.color_parse("black")
COLOR_DIRECTION_ARROW_SHADOW = gtk.gdk.color_parse("white")
DISTANCE_DRAW_FONT = pango.FontDescription("Sans 20")
DISTANCE_DRAW_FONT_COLOR = gtk.gdk.color_parse("black")
OSD_BORDER_TOPBOTTOM = 25
OSD_BORDER_LEFTRIGHT = 35
def __init__(self):
AbstractMarksLayer.__init__(self)
def draw(self):
surface = cairo.ImageSurface(cairo.FORMAT_ARGB32, self.map.map_width, self.map.map_height)
cr = gtk.gdk.CairoContext(cairo.Context(surface))
# if we have a target, draw it
if self.current_target != None:
t = self.map.coord2point(self.current_target)
if t != False and self.map.point_in_screen(t):
radius_o = 15
radius_i = 3
radius_c = 10
cr.move_to(t[0] - radius_o, t[1])
cr.line_to(t[0] - radius_i, t[1])
cr.move_to(t[0] + radius_o, t[1])
cr.line_to(t[0] + radius_i, t[1])
cr.move_to(t[0], t[1] + radius_o)
cr.line_to(t[0], t[1] + radius_i)
cr.move_to(t[0], t[1] - radius_o)
cr.line_to(t[0], t[1] - radius_i)
cr.new_sub_path()
cr.arc(t[0], t[1], radius_c, 0, math.pi * 2)
cr.set_source_color(self.COLOR_TARGET_SHADOW)
cr.set_line_width(3)
cr.stroke_preserve()
cr.set_source_color(self.COLOR_TARGET)
cr.set_line_width(2)
cr.stroke()
else:
t = False
if self.gps_last_good_fix != None and self.gps_last_good_fix.position != None:
p = self.map.coord2point(self.gps_last_good_fix.position)
else:
p = None
# a line between target and position if we have both
if p != None and t != False:
cr.set_line_width(5)
cr.set_source_rgba(1, 1, 0, 0.5)
if self.map.point_in_screen(t) and self.map.point_in_screen(p):
cr.move_to(p[0], p[1])
cr.line_to(t[0], t[1])
cr.stroke()
elif self.map.point_in_screen(p):
direction = math.radians(self.gps_target_bearing - 180)
# correct max length: sqrt(width**2 + height**2)
length = self.map.map_width
cr.move_to(p[0], p[1])
cr.line_to(int(p[0] - math.sin(direction) * length), int(p[1] + math.cos(direction) * length))
cr.stroke()
elif self.map.point_in_screen(t):
direction = math.radians(self.gps_target_bearing)
length = self.map.map_width + self.map.map_height
cr.move_to(t[0], t[1])
cr.line_to(int(t[0] - math.sin(direction) * length), int(t[1] + math.cos(direction) * length))
cr.stroke()
if p != None and self.map.point_in_screen(p):
cr.set_line_width(2)
if self.gps_has_fix:
radius = self.gps_data.error
radius_pixels = radius / self.map.get_meters_per_pixel(self.gps_last_good_fix.position.lat)
else:
radius_pixels = 10
radius_o = int((radius_pixels + 8) / math.sqrt(2))
radius_i = int((radius_pixels - 8) / math.sqrt(2))
if radius_i < 2:
radius_i = 2
if self.gps_has_fix:
cr.set_source_color(self.COLOR_CURRENT_POSITION)
else:
cr.set_source_color(self.COLOR_CURRENT_POSITION_NO_FIX)
# \ /
#
# / \
cr.arc(p[0], p[1], self.SIZE_CURRENT_POSITION, 0, math.pi * 2)
cr.fill()
if self.gps_has_fix:
cr.set_line_width(1)
cr.set_source_color(self.COLOR_ACCURACY)
cr.set_dash((5, 3))
cr.new_sub_path()
cr.arc(p[0], p[1], radius_pixels, 0, math.pi * 2)
cr.stroke()
cr.set_dash(())
# draw moving direction, if we're moving
if self.gps_data.speed > 2.5: # km/h
position = p#(self.map.map_width - self.OSD_BORDER_LEFTRIGHT, self.map.map_height - self.OSD_BORDER_TOPBOTTOM)
arrow = self._get_arrow_transformed(position[0] - 15, position[1] - 15, 30, 30, self.gps_data.bearing)
cr.move_to(* arrow[0])
for x, y in arrow:
cr.line_to(x, y)
cr.line_to(* arrow[0])
else:
cr.arc(p[0], p[1], self.SIZE_CURRENT_POSITION + 5, 0, math.pi * 2)
cr.set_source_color(self.COLOR_DIRECTION_ARROW_SHADOW)
cr.set_line_width(2)
cr.stroke_preserve()
cr.set_source_color(self.COLOR_DIRECTION_ARROW)
cr.set_line_width(1)
cr.stroke()
if self.gps_data != None and self.gps_has_fix:
position = (self.map.map_width - self.OSD_BORDER_LEFTRIGHT, self.OSD_BORDER_TOPBOTTOM)
layout = self.map.create_pango_layout(geo.Coordinate.format_distance(self.gps_target_distance))
layout.set_font_description(self.DISTANCE_DRAW_FONT)
width, height = layout.get_pixel_size()
cr.set_source_color(self.DISTANCE_DRAW_FONT_COLOR)
cr.move_to(position[0] - width, position[1])
cr.show_layout(layout)
self.result = surface
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