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#!/usr/bin/env python
# Copyright (C) 2007, Eduardo Silva (edsiper@gmail.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.
#
# 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., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
#############################################
# Drawing area tools
#############################################
import gtk
import gtk.gdk
class Drawing_Area_Tools:
height = 0
width = 0
margin = 5 # Left and bottom margin
range_x = []
range_y = []
def __init__(self, drwarea):
drwarea_size = drwarea.get_size_request()
self.width = drwarea_size[0]
self.height = drwarea_size[1]
# print "width %i" % self.width
# print "height %i" % self.height
self.range_x = {'from': self.margin+2, 'to': self.width - (self.margin+2)}
self.range_y = {'from': self.margin+2, 'to': self.height - (self.margin+2)}
def draw_line(self, context, from_x, from_y, to_x, to_y):
context.move_to(from_x, from_y)
context.line_to(to_x, to_y)
def draw_border_lines(self, context):
context.set_source_rgb(1, 1, 1)
self.draw_line(context, self.margin, self.margin, self.margin, self.height - self.margin)
self.draw_line(context, self.margin, self.height - self.margin - 1, self.width - self.margin, self.height - self.margin - 1)
context.stroke()
# Draw a grid
def draw_grid(self, context, init_x, init_y, end_x, end_y):
x_range = (end_x - init_x) + 5
y_range = (end_y - init_y) + 1
current_y = init_y
context.set_line_width(0.3)
for y in range(y_range):
if (y%20) == 0:
context.move_to(init_x, y)
context.line_to(end_x, y)
for x in range(x_range):
if (x%20) == 0:
context.move_to(x, init_y)
context.line_to(x, end_y)
context.stroke()
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