##############################################################################
# ThanCad 0.0.9 "DoesSomething": 2dimensional CAD with raster support for engineers.
#
# Copyright (c) 2001-2009 Thanasis Stamos, August 23, 2009
# URL: http://thancad.sourceforge.net
# e-mail: cyberthanasis@excite.com
#
# 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 2 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 (www.gnu.org/licenses/gpl.html).
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
##############################################################################
"""\
ThanCad 0.0.9 "DoesSomething": 2dimensional CAD with raster support for engineers.
This module defines rectangle states, i.e. as the user moves the mouse, a rectangle
is drawn from a given point to mouse cursor, continuously.
"""
from math import fabs
import Tkinter
from thantkconst import *
from thanvar import thanLogTk
from thantkguigeneric import ThanStateGeneric
class ThanStateRectangle(ThanStateGeneric):
"An object which interprets mouse movements to a rectangle."
def __init__(self, proj, x1, y1, t1):
"Initialize object."
self.thanProj = proj
self.__x1 = x1
self.__y1 = y1
self.__t1 = t1 # __t1 is the command
print "rectangle: command: t1=", t1
dc = self.thanProj[2].thanCanvas
# dc.thanOrtho.enable(x1, y1) # Ortho is crazy here!
self.__dragged = dc.create_line(10000, 10000, 10001, 10001) # Dummy element to avoid complexity in onMotion()
dc.thanTempItems.add(self.__dragged)
def thanOnMotion(self, event, x, y):
"Well, here is what should be drawn each time mouse moves."
out = "blue"; fil = "darkblue"
if self.__t1 == "c": out = "cyan"; fil = "darkcyan"
elif self.__t1 == "cw" and x < self.__x1: out = "cyan"; fil = "darkcyan"
elif self.__t1 == None: out = "blue"; fil = None
dc = self.thanProj[2].thanCanvas
# x, y = dc.thanOrtho.orthoxy(x, y) # ortho is crazy here
i1 = self.__dragged
self.__dragged = dc.create_rectangle(self.__x1, self.__y1, x, y, outline=out, fill=fil, stipple="gray25")
# if self.__t1 != None: dc.lower(self.__dragged)
dc.delete(i1)
dc.thanTempItems.remove(i1)
dc.thanTempItems.add(self.__dragged)
def thanOnClick(self, event, x, y, cc):
"Well, here is what should be done when mouse clicks."
dc = self.thanProj[2].thanCanvas
dc.delete(self.__dragged)
dc.thanTempItems.remove(self.__dragged)
dc.thanLastResult = cc, None
dc.thanState = THAN_STATE_NONE
dc.thanOState = ThanStateGeneric(self.thanProj)
def thanZoomXyr(self, x, y, fact):
"Change internal coordinates according to zoom; this fuction should be in the state objects."
self.__x1 = x + (self.__x1-x)*fact
self.__y1 = y + (self.__y1-y)*fact
class ThanStateRectratio(ThanStateGeneric):
"An object which interprets mouse movements to a rectangle with fixed signed __t1=height/width."
def __init__(self, proj, x1, y1, t1, cc1):
"Initialize object."
self.thanProj = proj
self.__x1 = x1
self.__y1 = y1
self.__t1 = t1 # __t1 is the signed ratio: height/width
self.__cc1 = cc1
dc = self.thanProj[2].thanCanvas
self.__dragged = dc.create_line(10000, 10000, 10001, 10001) # Dummy element to avoid complexity in onMotion()
dc.thanTempItems.add(self.__dragged)
def thanOnMotion(self, event, x, y):
"Well, here is what should be drawn each time mouse moves."
stip = "blue"
dx = abs(x - self.__x1)
dy = abs(y - self.__y1)
if dx > dy: dy = dx*self.__t1
else: dx = dy/self.__t1
x2 = self.__x1+dx
y2 = self.__y1-dy
dc = self.thanProj[2].thanCanvas
i1 = self.__dragged
self.__dragged = dc.create_rectangle(self.__x1, self.__y1, x2, y2, outline=stip)
dc.delete(i1)
dc.thanTempItems.remove(i1)
dc.thanTempItems.add(self.__dragged)
def thanOnClick(self, event, x, y, cc):
"Well, here is what should be done when mouse clicks."
# dx = abs(x - self.__x1); dy = abs(y - self.__y1)
# if dx > dy: dy = dx*self.__t1
# else: dx = dy/self.__t1
# self.__resultCoor(self.__x1+dx, self.__y1-dy)
dx = fabs(cc[0] - self.__cc1[0])
dy = fabs(cc[1] - self.__cc1[1])
if dx > dy: dy = dx*self.__t1
else: dx = dy/self.__t1
cc[0] = self.__cc1[0] + dx
cc[1] = self.__cc1[1] + dy
dc = self.thanProj[2].thanCanvas
dc.delete(self.__dragged)
dc.thanTempItems.remove(self.__dragged)
dc.thanLastResult = cc, None
dc.thanState = THAN_STATE_NONE
dc.thanOState = ThanStateGeneric(self.thanProj)
def thanZoomXyr(self, x, y, fact):
"Change internal coordinates according to zoom; this fuction should be in the state objects."
self.__x1 = x + (self.__x1-x)*fact
self.__y1 = y + (self.__y1-y)*fact
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