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canvas_position_marker.py
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224 lines (193 loc) · 11.6 KB
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import tkinter
import sys
from typing import TYPE_CHECKING, Callable
if TYPE_CHECKING:
from .map_widget import TkinterMapView
from .utility_functions import decimal_to_osm, osm_to_decimal
class CanvasPositionMarker:
def __init__(self,
map_widget: "TkinterMapView",
position: tuple,
text: str = None,
text_color: str = "#652A22",
font=None,
marker_color_circle: str = "#9B261E",
marker_color_outside: str = "#C5542D",
command: Callable = None,
image: tkinter.PhotoImage = None,
icon: tkinter.PhotoImage = None,
icon_anchor: str = "center",
image_zoom_visibility: tuple = (0, float("inf")),
data: any = None):
self.map_widget = map_widget
self.position = position
self.text_color = text_color
self.marker_color_circle = marker_color_circle
self.marker_color_outside = marker_color_outside
self.text = text
self.text_y_offset = 0 # vertical offset pf text from marker position in px
self.image = image
self.icon = icon
self.icon_anchor = icon_anchor # can be center, n, nw, w, sw, s, ew, e, ne
self.image_hidden = False
self.image_zoom_visibility = image_zoom_visibility
self.deleted = False
self.command = command
self.data = data
self.polygon = None
self.big_circle = None
self.canvas_text = None
self.canvas_image = None
self.canvas_icon = None
if font is None:
if sys.platform == "darwin":
self.font = "Tahoma 13 bold"
else:
self.font = "Tahoma 11 bold"
else:
self.font = font
self.calculate_text_y_offset()
def calculate_text_y_offset(self):
if self.icon is not None:
if self.icon_anchor in ("center", "e", "w"):
self.text_y_offset = -round(self.icon.height() / 2) - 5
elif self.icon_anchor in ("nw", "n", "ne"):
self.text_y_offset = -5
elif self.icon_anchor in ("sw", "s", "se"):
self.text_y_offset = -self.icon.height() - 5
else:
raise ValueError(f"CanvasPositionMarker: wring anchor value: {self.icon_anchor}")
else:
self.text_y_offset = -56
def delete(self):
if self in self.map_widget.canvas_marker_list:
self.map_widget.canvas_marker_list.remove(self)
self.map_widget.canvas.delete(self.polygon)
self.map_widget.canvas.delete(self.big_circle)
self.map_widget.canvas.delete(self.canvas_text)
self.map_widget.canvas.delete(self.canvas_icon)
self.map_widget.canvas.delete(self.canvas_image)
self.polygon, self.big_circle, self.canvas_text, self.canvas_image, self.canvas_icon = None, None, None, None, None
self.deleted = True
self.map_widget.canvas.update()
def set_position(self, deg_x, deg_y):
self.position = (deg_x, deg_y)
self.draw()
def set_text(self, text):
self.text = text
self.draw()
def change_icon(self, new_icon: tkinter.PhotoImage):
if self.icon is None:
raise AttributeError("CanvasPositionMarker: marker needs icon image in constructor to change icon image later")
else:
self.icon = new_icon
self.calculate_text_y_offset()
self.map_widget.canvas.itemconfigure(self.canvas_icon, image=self.icon)
def hide_image(self, image_hidden: bool):
self.image_hidden = image_hidden
self.draw()
def mouse_enter(self, event=None):
if sys.platform == "darwin":
self.map_widget.canvas.config(cursor="pointinghand")
elif sys.platform.startswith("win"):
self.map_widget.canvas.config(cursor="hand2")
else:
self.map_widget.canvas.config(cursor="hand2") # not tested what it looks like on Linux!
def mouse_leave(self, event=None):
self.map_widget.canvas.config(cursor="arrow")
def click(self, event=None):
if self.command is not None:
self.command(self)
def get_canvas_pos(self, position):
tile_position = decimal_to_osm(*position, round(self.map_widget.zoom))
widget_tile_width = self.map_widget.lower_right_tile_pos[0] - self.map_widget.upper_left_tile_pos[0]
widget_tile_height = self.map_widget.lower_right_tile_pos[1] - self.map_widget.upper_left_tile_pos[1]
canvas_pos_x = ((tile_position[0] - self.map_widget.upper_left_tile_pos[0]) / widget_tile_width) * self.map_widget.width
canvas_pos_y = ((tile_position[1] - self.map_widget.upper_left_tile_pos[1]) / widget_tile_height) * self.map_widget.height
return canvas_pos_x, canvas_pos_y
def draw(self, event=None):
canvas_pos_x, canvas_pos_y = self.get_canvas_pos(self.position)
if not self.deleted:
if 0 - 50 < canvas_pos_x < self.map_widget.width + 50 and 0 < canvas_pos_y < self.map_widget.height + 70:
# draw icon image for marker
if self.icon is not None:
if self.canvas_icon is None:
self.canvas_icon = self.map_widget.canvas.create_image(canvas_pos_x, canvas_pos_y,
anchor=self.icon_anchor,
image=self.icon,
tag="marker")
if self.command is not None:
self.map_widget.canvas.tag_bind(self.canvas_icon, "<Enter>", self.mouse_enter)
self.map_widget.canvas.tag_bind(self.canvas_icon, "<Leave>", self.mouse_leave)
self.map_widget.canvas.tag_bind(self.canvas_icon, "<Button-1>", self.click)
else:
self.map_widget.canvas.coords(self.canvas_icon, canvas_pos_x, canvas_pos_y)
# draw standard icon shape
else:
if self.polygon is None:
self.polygon = self.map_widget.canvas.create_polygon(canvas_pos_x - 14, canvas_pos_y - 23,
canvas_pos_x, canvas_pos_y,
canvas_pos_x + 14, canvas_pos_y - 23,
fill=self.marker_color_outside, width=2,
outline=self.marker_color_outside, tag="marker")
if self.command is not None:
self.map_widget.canvas.tag_bind(self.polygon, "<Enter>", self.mouse_enter)
self.map_widget.canvas.tag_bind(self.polygon, "<Leave>", self.mouse_leave)
self.map_widget.canvas.tag_bind(self.polygon, "<Button-1>", self.click)
else:
self.map_widget.canvas.coords(self.polygon,
canvas_pos_x - 14, canvas_pos_y - 23,
canvas_pos_x, canvas_pos_y,
canvas_pos_x + 14, canvas_pos_y - 23)
if self.big_circle is None:
self.big_circle = self.map_widget.canvas.create_oval(canvas_pos_x - 14, canvas_pos_y - 45,
canvas_pos_x + 14, canvas_pos_y - 17,
fill=self.marker_color_circle, width=6,
outline=self.marker_color_outside, tag="marker")
if self.command is not None:
self.map_widget.canvas.tag_bind(self.big_circle, "<Enter>", self.mouse_enter)
self.map_widget.canvas.tag_bind(self.big_circle, "<Leave>", self.mouse_leave)
self.map_widget.canvas.tag_bind(self.big_circle, "<Button-1>", self.click)
else:
self.map_widget.canvas.coords(self.big_circle,
canvas_pos_x - 14, canvas_pos_y - 45,
canvas_pos_x + 14, canvas_pos_y - 17)
if self.text is not None:
if self.canvas_text is None:
self.canvas_text = self.map_widget.canvas.create_text(canvas_pos_x, canvas_pos_y + self.text_y_offset,
anchor=tkinter.S,
text=self.text,
fill=self.text_color,
font=self.font,
tag=("marker", "marker_text"))
if self.command is not None:
self.map_widget.canvas.tag_bind(self.canvas_text, "<Enter>", self.mouse_enter)
self.map_widget.canvas.tag_bind(self.canvas_text, "<Leave>", self.mouse_leave)
self.map_widget.canvas.tag_bind(self.canvas_text, "<Button-1>", self.click)
else:
self.map_widget.canvas.coords(self.canvas_text, canvas_pos_x, canvas_pos_y + self.text_y_offset)
self.map_widget.canvas.itemconfig(self.canvas_text, text=self.text)
else:
if self.canvas_text is not None:
self.map_widget.canvas.delete(self.canvas_text)
if self.image is not None and self.image_zoom_visibility[0] <= self.map_widget.zoom <= self.image_zoom_visibility[1]\
and not self.image_hidden:
if self.canvas_image is None:
self.canvas_image = self.map_widget.canvas.create_image(canvas_pos_x, canvas_pos_y + (self.text_y_offset - 30),
anchor=tkinter.S,
image=self.image,
tag=("marker", "marker_image"))
else:
self.map_widget.canvas.coords(self.canvas_image, canvas_pos_x, canvas_pos_y + (self.text_y_offset - 30))
else:
if self.canvas_image is not None:
self.map_widget.canvas.delete(self.canvas_image)
self.canvas_image = None
else:
self.map_widget.canvas.delete(self.canvas_icon)
self.map_widget.canvas.delete(self.canvas_text)
self.map_widget.canvas.delete(self.polygon)
self.map_widget.canvas.delete(self.big_circle)
self.map_widget.canvas.delete(self.canvas_image)
self.canvas_text, self.polygon, self.big_circle, self.canvas_image, self.canvas_icon = None, None, None, None, None
self.map_widget.manage_z_order()