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PySolFC/pysollib/ui/tktile/tkcanvas.py
Alexandre Detiste dd16750d5f
import tkinter directly (#383) 
* import tkinter directly

* linter

* linter
2024-09-21 17:10:10 -04:00

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Python
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#!/usr/bin/env python
# -*- mode: python; coding: utf-8; -*-
# ---------------------------------------------------------------------------
#
# Copyright (C) 1998-2003 Markus Franz Xaver Johannes Oberhumer
# Copyright (C) 2003 Mt. Hood Playing Card Co.
# Copyright (C) 2005-2009 Skomoroh
#
# 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/>.
#
# ---------------------------------------------------------------------------
import tkinter
from pysollib.mfxutil import Image, ImageTk
from pysollib.ui.tktile.Canvas2 import CanvasText, Group, Line, Rectangle
from pysollib.ui.tktile.Canvas2 import ImageItem as ImageItem2
from pysollib.ui.tktile.tkutil import loadImage, unbind_destroy
# ************************************************************************
# * canvas items
# ************************************************************************
class MfxCanvasGroup(Group):
def __init__(self, canvas, tag=None):
Group.__init__(self, canvas=canvas, tag=tag)
# register ourself so that we can unbind from the canvas
assert self.id not in self.canvas.items
self.canvas.items[self.id] = self
def addtag(self, tag, option="withtag"):
self.canvas.addtag(tag, option, self.id)
def delete(self):
del self.canvas.items[self.id]
Group.delete(self)
def gettags(self):
return self.canvas.tk.splitlist(self._do("gettags"))
class MfxCanvasImage(ImageItem2):
def __init__(self, canvas, x, y, **kwargs):
self.init_coord = x, y
group = None
if 'group' in kwargs:
group = kwargs['group']
del kwargs['group']
if 'image' in kwargs:
self._image = kwargs['image']
ImageItem2.__init__(self, canvas, x, y, **kwargs)
if group:
self.addtag(group)
def moveTo(self, x, y):
c = self.coords()
self.move(x - int(c[0]), y - int(c[1]))
def show(self):
self.config(state='normal')
def hide(self):
self.config(state='hidden')
MfxCanvasLine = Line
class MfxCanvasRectangle(Rectangle):
def __init__(self, canvas, *args, **kwargs):
group = None
if 'group' in kwargs:
group = kwargs['group']
del kwargs['group']
Rectangle.__init__(self, canvas, *args, **kwargs)
if group:
self.addtag(group)
class MfxCanvasText(CanvasText):
def __init__(self, canvas, x, y, preview=-1, **kwargs):
self.init_coord = x, y
self.x, self.y = x, y
if preview < 0:
preview = canvas.preview
if preview > 1:
return
if "fill" not in kwargs:
kwargs["fill"] = canvas._text_color
group = None
if 'group' in kwargs:
group = kwargs['group']
del kwargs['group']
CanvasText.__init__(self, canvas, x, y, **kwargs)
self.text_format = None
canvas._text_items.append(self)
if group:
self.addtag(group)
def moveTo(self, x, y):
dx, dy = x - self.x, y - self.y
self.x, self.y = x, y
self.move(dx, dy)
# ************************************************************************
# * canvas
# ************************************************************************
class MfxCanvas(tkinter.Canvas):
def __init__(self, *args, **kw):
tkinter.Canvas.__init__(self, *args, **kw)
self.preview = 0
self.busy = False
# this is also used by lib-tk/Canvas.py
self.items = {}
# private
self.__tileimage = None
self.__tiles = [] # id of canvas items
self.__topimage = None
self.__tops = [] # id of canvas items
# friend MfxCanvasText
self._text_color = "#000000"
self._stretch_bg_image = 0
self._save_aspect_bg_image = 0
self._text_items = []
#
self.xmargin, self.ymargin = 10, 10
# resize bg image
self.bind('<Configure>', self.setBackgroundImage)
def setBackgroundImage(self, event=None):
# print 'setBackgroundImage', self._bg_img
if not hasattr(self, '_bg_img'):
return
if not self._bg_img: # solid color
return
stretch = self._stretch_bg_image
save_aspect = self._save_aspect_bg_image
if Image:
if stretch:
w, h = self._geometry()
if save_aspect:
w0, h0 = self._bg_img.size
a = min(float(w0)/w, float(h0)/h)
w0, h0 = int(w0/a), int(h0/a)
im = self._bg_img.resize((w0, h0))
# Center the background image.
cpw = (w0 - w) / 2
cph = (h0 - h) / 2
im = im.crop([max(0, cpw), max(0, cph), w0, h0])
else:
im = self._bg_img.resize((w, h))
image = ImageTk.PhotoImage(im)
else:
image = ImageTk.PhotoImage(self._bg_img)
else: # not Image
stretch = 0
image = self._bg_img
for id in self.__tiles:
self.delete(id)
self.__tiles = []
# must keep a reference to the image, otherwise Python will
# garbage collect it...
self.__tileimage = image
if stretch:
#
if self.preview:
dx, dy = 0, 0
else:
dx, dy = -self.xmargin, -self.ymargin
id = self._x_create("image", dx, dy, image=image, anchor="nw")
self.tag_lower(id) # also see tag_lower above
self.__tiles.append(id)
else:
iw, ih = image.width(), image.height()
sw, sh = self._geometry()
for x in range(-self.xmargin, sw, iw):
for y in range(-self.ymargin, sh, ih):
id = self._x_create(
"image", x, y, image=image, anchor="nw")
self.tag_lower(id) # also see tag_lower above
self.__tiles.append(id)
return 1
def _geometry(self):
w = self.winfo_width()
if w == 1:
w = int(self.cget('width'))
h = self.winfo_height()
if h == 1:
h = int(self.cget('height'))
scrollregion = self.cget('scrollregion')
if not scrollregion:
return w, h
x, y, sw, sh = [int(i) for i in scrollregion.split()]
sw -= x
sh -= y
w = max(w, sw)
h = max(h, sh)
return w, h
#
# top-image support
#
def _x_create(self, itemType, *args, **kw):
return tkinter.Canvas._create(self, itemType, args, kw)
def _create(self, itemType, args, kw):
# print "_create:", itemType, args, kw
id = tkinter.Canvas._create(self, itemType, args, kw)
if self.__tops:
self.tk.call(self._w, "lower", id, self.__tops[0])
return id
def tag_raise(self, id, aboveThis=None):
# print "tag_raise:", id, aboveThis
if aboveThis is None and self.__tops:
self.tk.call(self._w, "lower", id, self.__tops[0])
else:
self.tk.call(self._w, "raise", id, aboveThis)
def tag_lower(self, id, belowThis=None):
# print "tag_lower:", id, belowThis
if belowThis is None and self.__tiles:
self.tk.call(self._w, "raise", id, self.__tiles[-1])
else:
self.tk.call(self._w, "lower", id, belowThis)
def setInitialSize(self, width, height, margins=True, scrollregion=True):
# print 'Canvas.setInitialSize:', width, height, scrollregion
if self.preview:
self.config(width=width, height=height,
scrollregion=(0, 0, width, height))
else:
# add margins
dx, dy = self.xmargin, self.ymargin
if margins:
w, h = dx+width+dx, dy+height+dy
else:
w, h = width, height
self.config(width=w, height=h)
if scrollregion:
self.config(scrollregion=(-dx, -dy, width+dx, height+dy))
else:
# no scrolls
self.config(scrollregion=(-dx, -dy, dx, dy))
# delete all CanvasItems, but keep the background and top tiles
def deleteAllItems(self):
self._text_items = []
for id in list(self.items.keys()):
assert id not in self.__tiles # because the tile is created by id
unbind_destroy(self.items[id])
self.items[id].delete()
assert self.items == {}
def findCard(self, stack, event):
if isinstance(stack.cards[0].item, Group):
current = self.gettags("current") # get tags
for i in range(len(stack.cards)):
if stack.cards[i].item.tag in current:
return i
else:
# current = self.find("withtag", "current") # get item ids
# for i in range(len(stack.cards)):
# if stack.cards[i].item.id in current:
# return i
if self.preview:
dx, dy = 0, 0
else:
dx, dy = -self.xmargin, -self.ymargin
x = event.x+dx+self.xview()[0]*int(self.cget('width'))
y = event.y+dy+self.yview()[0]*int(self.cget('height'))
# x, y = event.x, event.y
items = list(self.find_overlapping(x, y, x, y))
items.reverse()
for item in items:
for i in range(len(stack.cards)):
if stack.cards[i].item.id == item:
return i
return -1
def setTextColor(self, color):
if color is None:
c = self.cget("bg")
if not isinstance(c, str) or c[0] != "#" or len(c) != 7:
return
v = []
for i in (1, 3, 5):
v.append(int(c[i:i+2], 16))
luminance = (0.212671 * v[0] + 0.715160 * v[1] + 0.072169 * v[2]) \
/ 255
# print c, ":", v, "luminance", luminance
color = ("#000000", "#ffffff")[luminance < 0.3]
if self._text_color != color:
self._text_color = color
for item in self._text_items:
item.config(fill=self._text_color)
def setTile(self, image, stretch=0, save_aspect=0):
# print 'setTile:', image, stretch
if image:
if Image:
try:
self._bg_img = Image.open(image)
except Exception:
return 0
else:
try:
self._bg_img = loadImage(file=image, dither=1)
except Exception:
return 0
self._stretch_bg_image = stretch
self._save_aspect_bg_image = save_aspect
self.setBackgroundImage()
else:
for id in self.__tiles:
self.delete(id)
self.__tiles = []
self._bg_img = None
return 1
def setTopImage(self, image, cw=0, ch=0):
try:
if image and isinstance(image, str):
image = loadImage(file=image)
except tkinter.TclError:
return 0
if len(self.__tops) == 1 and image is self.__tops[0]:
return 1
for id in self.__tops:
self.delete(id)
self.__tops = []
# must keep a reference to the image, otherwise Python will
# garbage collect it...
self.__topimage = image
if image is None:
return 1
iw, ih = image.width(), image.height()
if cw <= 0:
# cw = max(int(self.cget("width")), self.winfo_width())
cw = self.winfo_width()
if ch <= 0:
# ch = max(int(self.cget("height")), self.winfo_height())
ch = self.winfo_height()
# print iw, ih, cw, ch
x = (cw-iw)//2-self.xmargin+self.xview()[0]*int(self.cget('width'))
y = (ch-ih)//2-self.ymargin+self.yview()[0]*int(self.cget('height'))
id = self._x_create("image", x, y, image=image, anchor="nw")
self.tk.call(self._w, "raise", id)
self.__tops.append(id)
return 1
#
# Pause support
#
def hideAllItems(self):
for item in list(self.items.values()):
item.config(state='hidden')
def showAllItems(self):
for item in list(self.items.values()):
item.config(state='normal')
#
# restricted but fast _bind and _substitute
#
def _bind(self, what, sequence, func, add, needcleanup=1):
funcid = self._register(func, self._substitute, needcleanup)
cmd = ('%sif {"[%s %s]" == "break"} break\n' %
(add and '+' or '', funcid, "%x %y"))
self.tk.call(what + (sequence, cmd))
return funcid
def _substitute(self, *args):
e = tkinter.Event()
try:
# Tk changed behavior in 8.4.2, returning "??" rather more often.
e.x = int(args[0])
except ValueError:
e.x = args[0]
try:
e.y = int(args[1])
except ValueError:
e.y = args[1]
return (e,)
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