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|
# -*- coding: utf-8 -*-
"""
@namespace Desenho
Pixmap manipulation
Copyright 2007, NATE-LSI-EPUSP
Oficina is developed in Brazil at Escola Politécnica of
Universidade de São Paulo. NATE is part of LSI (Integrable
Systems Laboratory) and stands for Learning, Work and Entertainment
Research Group. Visit our web page:
www.lsi.usp.br/nate
Suggestions, bugs and doubts, please email oficina@lsi.usp.br
Oficina 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 version 2 of
the License.
Oficina 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 Oficina; if not, write to the
Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
Boston, MA 02110-1301 USA.
The copy of the GNU General Public License is found in the
COPYING file included in the source distribution.
Authors:
Joyce Alessandra Saul (joycealess@gmail.com)
Andre Mossinato (andremossinato@gmail.com)
Nathalia Sautchuk Patrício (nathalia.sautchuk@gmail.com)
Pedro Kayatt (pekayatt@gmail.com)
Rafael Barbolo Lopes (barbolo@gmail.com)
Alexandre A. Gonçalves Martinazzo (alexandremartinazzo@gmail.com)
Colaborators:
Bruno Gola (brunogola@gmail.com)
Group Manager:
Irene Karaguilla Ficheman (irene@lsi.usp.br)
Cientific Coordinator:
Roseli de Deus Lopes (roseli@lsi.usp.br)
UI Design (OLPC):
Eben Eliason (eben@laptop.org)
Project Coordinator (OLPC):
Manusheel Gupta (manu@laptop.org)
Project Advisor (OLPC):
Walter Bender (walter@laptop.org)
"""
import pygtk
pygtk.require('2.0')
import gtk
import logging
import math
import gc
##Pixmap manipulation
class Desenho:
def __init__(self, widget):
"""Initialize Desenho object.
@param self -- Desenho.Desenho instance
@param widget -- Area object (GtkDrawingArea)
"""
#self.d = widget
def line(self, widget, coords):
"""Draw line.
@param self -- Desenho.Desenho instance
@param widget -- Area object (GtkDrawingArea)
@param coords -- Two value tuple
"""
width, height = widget.window.get_size()
widget.pixmap_temp.draw_drawable(widget.gc, widget.pixmap, 0, 0, 0, 0,
width, height)
widget.pixmap_temp.draw_line(widget.gc_line, widget.oldx, widget.oldy,
coords[0], coords[1])
#widget.newx = coords[0]
#widget.newy = coords[1]
widget.queue_draw()
def eraser(self, widget, coords, last, size=30, shape='circle'):
"""Erase part of the drawing.
@param self -- Desenho.Desenho instance
@param last -- last of oldx
@param widget -- Area object (GtkDrawingArea)
@param coords -- Two value tuple
@param size -- integer (default 30)
@param shape -- string (default 'circle')
"""
widget.desenha = False
self._trace(widget, widget.gc_eraser, coords, last, size, shape)
#widget.queue_draw()
def brush(self, widget, coords, last, size=5, shape='circle'):
"""Paint with brush.
@param self -- Desenho.Desenho instance
@param last -- last of oldx
@param widget -- Area object (GtkDrawingArea)
@param coords -- Two value tuple
@param size -- integer (default 30)
@param shape -- string (default 'circle')
"""
widget.desenha = False
self._trace(widget, widget.gc_brush, coords, last, size, shape)
def stamp(self, widget, coords, last, stamp_size=20):
"""Paint with stamp.
@param self -- Desenho.Desenho instance
@param last -- last of oldx
@param widget -- Area object (GtkDrawingArea)
@param coords -- Two value tuple
@param stamp_size -- integer (default 20)
"""
widget.desenha = False
gc = widget.gc_brush
width = widget.resized_stamp.get_width()
height = widget.resized_stamp.get_height()
dx = coords[0] - width / 2
dy = coords[1] - height / 2
widget.pixmap.draw_pixbuf(gc, widget.resized_stamp,
0, 0, dx, dy, width, height)
widget.queue_draw()
def rainbow(self, widget, coords, last, color, size=5, shape='circle'):
"""Paint with rainbow.
@param self -- Desenho.Desenho instance
@param last -- last of oldx
@param widget -- Area object (GtkDrawingArea)
@param color -- select the color adress
@param coords -- Two value tuple
@param size -- integer (default 30)
@param shape -- string (default 'circle')
"""
colormap = widget.get_colormap()
rainbow_colors = [
colormap.alloc_color('#ff0000', True, True), # vermelho
colormap.alloc_color('#ff8000', True, True), # laranja
colormap.alloc_color('#ffff00', True, True), # amarelo
colormap.alloc_color('#80ff00', True, True), # verde lima
colormap.alloc_color('#00ff00', True, True), # verde
colormap.alloc_color('#00ff80', True, True), # verde agua
colormap.alloc_color('#00ffff', True, True), # azul claro
colormap.alloc_color('#007fff', True, True), # quase azul
colormap.alloc_color('#0000ff', True, True), # azul
colormap.alloc_color('#8000ff', True, True), # anil
colormap.alloc_color('#ff00ff', True, True), # rosa violeta
colormap.alloc_color('#ff0080', True, True), # violeta
]
widget.gc_rainbow.set_foreground(rainbow_colors[color])
widget.desenha = False
self._trace(widget, widget.gc_rainbow, coords, last, size, shape)
def _trace(self, widget, gc, coords, last, size, shape):
if shape == 'circle':
widget.pixmap.draw_arc(gc, True,
coords[0] - size / 2, coords[1] - size / 2,
size, size, 0, 360 * 64)
if last:
gc.set_line_attributes(size, gtk.gdk.LINE_SOLID,
gtk.gdk.CAP_ROUND, gtk.gdk.JOIN_ROUND)
widget.pixmap.draw_line(gc,
last[0], last[1], coords[0], coords[1])
gc.set_line_attributes(0, gtk.gdk.LINE_SOLID,
gtk.gdk.CAP_ROUND, gtk.gdk.JOIN_ROUND)
elif shape == 'square':
widget.pixmap.draw_rectangle(gc, True,
coords[0] - size / 2, coords[1] - size / 2, size, size)
if last:
points = [(last[0] - size / 2, last[1] - size / 2),
(coords[0] - size / 2, coords[1] - size / 2),
(coords[0] + size / 2, coords[1] + size / 2),
(last[0] + size / 2, last[1] + size / 2)]
widget.pixmap.draw_polygon(gc, True, points)
points = [(last[0] + size / 2, last[1] - size / 2),
(coords[0] + size / 2, coords[1] - size / 2),
(coords[0] - size / 2, coords[1] + size / 2),
(last[0] - size / 2, last[1] + size / 2)]
widget.pixmap.draw_polygon(gc, True, points)
if last:
x = min(coords[0], last[0])
width = max(coords[0], last[0]) - x
y = min(coords[1], last[1])
height = max(coords[1], last[1]) - y
# We add size to avoid drawing dotted lines
widget.queue_draw_area(x - size, y - size,
width + size * 2, height + size * 2)
else:
widget.queue_draw()
def square(self, widget, event, coords, temp, fill):
"""Draw a square.
@param self -- Desenho.Desenho instance
@param widget -- Area object (GtkDrawingArea)
@param coords -- Two value tuple
@param temp -- switch between pixmap and pixmap_temp
@param fill -- Fill object
"""
if temp == True:
pixmap = widget.pixmap_temp
else:
pixmap = widget.pixmap
width, height = widget.window.get_size()
x, y, dx, dy, = self.adjust(widget, coords)
pixmap.draw_drawable(widget.gc, widget.pixmap, 0, 0, 0, 0,
width, height)
if fill == True:
pixmap.draw_rectangle(widget.gc, True, x, y, dx, dy)
pixmap.draw_rectangle(widget.gc_line, False, x, y, dx, dy)
widget.queue_draw()
def triangle(self, widget, coords, temp, fill):
"""Draw a triangle.
@param self -- Desenho.Desenho instance
@param widget -- Area object (GtkDrawingArea)
@param coords -- Two value tuple
@param temp -- switch between pixmap and pixmap_temp
@param fill -- Fill object
"""
if temp == True:
pixmap = widget.pixmap_temp
else:
pixmap = widget.pixmap
width, height = widget.window.get_size()
points = [(widget.oldx, widget.oldy),
(widget.oldx + int((coords[0] - widget.oldx) / 2), coords[1]),
(coords[0], widget.oldy)]
pixmap.draw_drawable(widget.gc, widget.pixmap, 0, 0, 0, 0,
width, height)
if fill == True:
pixmap.draw_polygon(widget.gc, True, points)
pixmap.draw_polygon(widget.gc_line, False, points)
widget.queue_draw()
def trapezoid(self, widget, coords, temp, fill):
"""Draw a trapezoid.
@param self -- Desenho.Desenho instance
@param widget -- Area object (GtkDrawingArea)
@param coords -- Two value tuple
@param temp -- switch between pixmap and pixmap_temp
@param fill -- Fill object
"""
if temp == True:
pixmap = widget.pixmap_temp
else:
pixmap = widget.pixmap
width, height = widget.window.get_size()
dif = int((coords[0] - widget.oldx) / 4)
points = [(widget.oldx, widget.oldy), (widget.oldx + dif, coords[1]),
(coords[0] - dif, coords[1]), (coords[0], widget.oldy)]
pixmap.draw_drawable(widget.gc, widget.pixmap, 0, 0, 0, 0,
width, height)
if fill == True:
pixmap.draw_polygon(widget.gc, True, points)
pixmap.draw_polygon(widget.gc_line, False, points)
widget.queue_draw()
def arrow(self, widget, coords, temp, fill):
"""Draw a arrow.
@param self -- Desenho.Desenho instance
@param widget -- Area object (GtkDrawingArea)
@param coords -- Two value tuple
@param temp -- switch between pixmap and pixmap_temp
@param fill -- Fill object
"""
if temp == True:
pixmap = widget.pixmap_temp
else:
pixmap = widget.pixmap
width, height = widget.window.get_size()
x = coords[0] - widget.oldx
y = coords[1] - widget.oldy
A = math.atan2(y, x)
dA = 2 * math.pi / 2
r = math.hypot(y, x)
m = math.sin(A)
p = [(widget.oldx, widget.oldy)]
p.append((widget.oldx + int(r * math.cos(A)),\
widget.oldy + int(r * math.sin(A))))
p.append((widget.oldx + int(0.74 * r * math.cos(A + dA / 6)),\
widget.oldy + int(0.74 * r * math.sin(A + dA / 6))))
p.append((widget.oldx + int(2 * r * math.cos(A + dA / 6 + dA / 20)),\
widget.oldy + int(2 * r * math.sin(A + dA / 6 + dA / 20))))
p.append((widget.oldx +\
int(2 * r * math.cos(A + dA / 6 - dA / 20 + dA / 6)),\
widget.oldy +\
int(2 * r * math.sin(A + dA / 6 - dA / 20 + dA / 6))))
p.append((widget.oldx + int(0.74 * r * math.cos(A + dA / 6 + dA / 6)),\
widget.oldy + int(0.74 * r * math.sin(A + dA / 6 + dA / 6))))
p.append((widget.oldx + int(r * math.cos(A + dA / 2)),\
widget.oldy + int(r * math.sin(A + dA / 2))))
pixmap.draw_drawable(widget.gc, widget.pixmap, 0, 0, 0, 0,
width, height)
tp = tuple(p)
if fill == True:
pixmap.draw_polygon(widget.gc, True, tp)
pixmap.draw_polygon(widget.gc_line, False, tp)
widget.queue_draw()
def parallelogram(self, widget, coords, temp, fill):
"""Draw a parallelogram.
@param self -- Desenho.Desenho instance
@param widget -- Area object (GtkDrawingArea)
@param coords -- Two value tuple
@param temp -- switch between pixmap and pixmap_temp
@param fill -- Fill object
"""
if temp == True:
pixmap = widget.pixmap_temp
else:
pixmap = widget.pixmap
width, height = widget.window.get_size()
x = int((coords[0] - widget.oldx) / 4)
points = [(widget.oldx, widget.oldy), (coords[0] - x, widget.oldy),
(coords[0], coords[1]), (widget.oldx + x, coords[1])]
pixmap.draw_drawable(widget.gc, widget.pixmap, 0, 0, 0, 0,
width, height)
if fill == True:
pixmap.draw_polygon(widget.gc, True, points)
pixmap.draw_polygon(widget.gc_line, False, points)
widget.queue_draw()
def star(self, widget, coords, n, temp, fill):
"""Draw polygon with n sides.
@param self -- Desenho.Desenho instance
@param widget -- Area object (GtkDrawingArea)
@param coords -- Two value tuple
@param n -- number of sides
@param temp -- switch between pixmap and pixmap_temp
@param fill -- Fill object
"""
if temp == True:
pixmap = widget.pixmap_temp
else:
pixmap = widget.pixmap
width, height = widget.window.get_size()
x = coords[0] - widget.oldx
y = coords[1] - widget.oldy
A = math.atan2(y, x)
dA = 2 * math.pi / n
r = math.hypot(y, x)
p = [(widget.oldx + int(r * math.cos(A)), \
widget.oldy + int(r * math.sin(A))), \
(widget.oldx + int(0.4 * r * math.cos(A + dA / 2)),
widget.oldy + int(0.4 * r * math.sin(A + dA / 2)))]
for i in range(int(n) - 1):
A = A + dA
p.append((widget.oldx + int(r * math.cos(A)), \
widget.oldy + int(r * math.sin(A))))
p.append((widget.oldx + int(0.4 * r * math.cos(A + dA / 2)), \
widget.oldy + int(0.4 * r * math.sin(A + dA / 2))))
tp = tuple(p)
pixmap.draw_drawable(widget.gc, widget.pixmap, 0, 0, 0, 0,
width, height)
if fill == True:
pixmap.draw_polygon(widget.gc, True, tp)
pixmap.draw_polygon(widget.gc_line, False, tp)
widget.queue_draw()
def polygon_regular(self, widget, coords, n, temp, fill):
"""Draw polygon with n sides.
@param self -- Desenho.Desenho instance
@param widget -- Area object (GtkDrawingArea)
@param coords -- Two value tuple
@param n -- number of sides
@param temp -- switch between pixmap and pixmap_temp
@param fill -- Fill object
"""
if temp == True:
pixmap = widget.pixmap_temp
else:
pixmap = widget.pixmap
width, height = widget.window.get_size()
x = coords[0] - widget.oldx
y = coords[1] - widget.oldy
A = math.atan2(y, x)
dA = 2 * math.pi / n
r = math.hypot(y, x)
p = [(widget.oldx + int(r * math.cos(A)), \
widget.oldy + int(r * math.sin(A)))]
for i in range(int(n) - 1):
A = A + dA
p.append((widget.oldx + int(r * math.cos(A)), \
widget.oldy + int(r * math.sin(A))))
tp = tuple(p)
pixmap.draw_drawable(widget.gc, widget.pixmap, 0, 0, 0, 0,
width, height)
if fill == True:
pixmap.draw_polygon(widget.gc, True, tp)
pixmap.draw_polygon(widget.gc_line, False, tp)
widget.queue_draw()
def heart(self, widget, coords, temp, fill):
"""Draw polygon with n sides.
@param self -- Desenho.Desenho instance
@param widget -- Area object (GtkDrawingArea)
@param coords -- Two value tuple
@param temp -- switch between pixmap and pixmap_temp
@param fill -- Fill object
"""
if temp == True:
pixmap = widget.pixmap_temp
else:
pixmap = widget.pixmap
width, height = widget.window.get_size()
if coords[0] < widget.oldx:
x = coords[0]
else:
x = widget.oldx
if coords[1] < widget.oldy:
y = coords[1]
else:
y = widget.oldy
dx = math.fabs(coords[0] - widget.oldx)
dy = math.fabs(coords[1] - widget.oldy)
w = int(4 * dx)
e = int(4 * dx / math.sqrt(3))
pixmap.draw_drawable(widget.gc, widget.pixmap, 0, 0, 0, 0,
width, height)
if fill == True:
pixmap.draw_arc(widget.gc, True,
int(widget.oldx - dx),
int(widget.oldy - e / 2), w, e, 180 * 64, 60 * 64)
pixmap.draw_arc(widget.gc, True,
int(widget.oldx - 3 * dx),
int(widget.oldy - e / 2), w, e, 300 * 64, 60 * 64)
pixmap.draw_arc(widget.gc, True,
int(widget.oldx - dx * 0.2),
int(widget.oldy - 0.6 * dx + 2),
int(1.2 * dx), int(1.2 * dx), 0, 180 * 64)
pixmap.draw_arc(widget.gc, True,
int(widget.oldx - dx),
int(widget.oldy - 0.6 * dx + 2),
int(1.2 * dx), int(1.2 * dx), 0, 180 * 64)
pixmap.draw_arc(widget.gc_line, False,
int(widget.oldx - dx),
int(widget.oldy - e / 2), w, e, 180 * 64, 60 * 64)
pixmap.draw_arc(widget.gc_line, False,
int(widget.oldx - dx - w / 2),
int(widget.oldy - e / 2), w, e, 300 * 64, 60 * 64)
pixmap.draw_arc(widget.gc_line, False,
int(widget.oldx - dx * 0.2),
int(widget.oldy - 0.6 * dx + 2),
int(1.2 * dx), int(1.2 * dx), 0, 132 * 64)
pixmap.draw_arc(widget.gc_line, False,
int(widget.oldx - dx),
int(widget.oldy - 0.6 * dx + 2),
int(1.2 * dx), int(1.2 * dx), 48 * 64, 132 * 64)
widget.queue_draw()
def circle(self, widget, coords, temp, fill):
"""Draw a circle.
@param self -- Desenho.Desenho instance
@param widget -- Area object (GtkDrawingArea)
@param coords -- Two value tuple
@param temp -- switch between pixmap and pixmap_temp
@param fill -- Fill object
"""
if temp == True:
pixmap = widget.pixmap_temp
else:
pixmap = widget.pixmap
width, height = widget.window.get_size()
x, y, dx, dy = self.adjust(widget, coords)
pixmap.draw_drawable(widget.gc, widget.pixmap, 0, 0, 0, 0,
width, height)
if fill == True:
pixmap.draw_arc(widget.gc, True, x, y, dx, dy, 0, 360 * 64)
pixmap.draw_arc(widget.gc_line, False, x, y, dx, dy, 0, 360 * 64)
widget.queue_draw()
def clear(self, widget):
"""Clear the drawing.
@param self -- Desenho.Desenho instance
@param widget -- Area object (GtkDrawingArea)
"""
logging.debug('Desenho.clear')
widget.desenho = []
widget.textos = []
# try to clear a selected area first
if widget.is_selected():
try:
width, height = widget.pixmap_sel.get_size()
# Clear the selected area
widget.pixmap_sel.draw_rectangle(widget.get_style().white_gc,
True, 0, 0, width, height)
# Draw the selected area in the displayed pixmap
widget.pixmap_temp.draw_drawable(widget.gc, widget.pixmap_sel,
0, 0, widget.orig_x, widget.orig_y, width, height)
# Draw the selection rectangle
widget.pixmap_temp.draw_rectangle(widget.gc_selection, False,
widget.orig_x, widget.orig_y, width, height)
widget.pixmap_temp.draw_rectangle(widget.gc_selection1, False,
widget.orig_x - 1, widget.orig_y - 1,
width + 2, height + 2)
except NameError, message:
logging.debug(message)
except Exception, message:
logging.debug('Unexpected error: %s', message)
else:
width, height = widget.window.get_size()
widget.pixmap.draw_rectangle(widget.get_style().white_gc, True,
0, 0, width, height)
widget.pixmap_temp.draw_rectangle(widget.get_style().white_gc,
True, 0, 0, width, height)
widget.queue_draw()
def text(self, widget, event):
"""Display and draw text in the drawing area.
@param self -- Desenho.Desenho instance
@param widget -- Area object (GtkDrawingArea)
@param event -- GdkEvent
"""
if not widget.text_in_progress:
widget.text_in_progress = True
widget.janela.fixed.move(widget.janela.textview,
int(event.x), int(event.y))
widget.janela.textview.show()
widget.janela.textview.grab_focus()
else:
widget.text_in_progress = False
try:
# This works for a gtk.Entry
text = widget.janela.textview.get_text()
except AttributeError:
# This works for a gtk.TextView
buf = widget.janela.textview.get_buffer()
start, end = buf.get_bounds()
text = buf.get_text(start, end)
layout = widget.janela.textview.create_pango_layout(text)
widget.pixmap.draw_layout(widget.gc_brush,
widget.oldx, widget.oldy, layout)
widget.pixmap_temp.draw_layout(widget.gc,
widget.oldx, widget.oldy, layout)
widget.janela.textview.hide()
try:
widget.janela.textview.set_text('')
except AttributeError:
buf.set_text('')
widget.enableUndo(widget)
widget.queue_draw()
def selection(self, widget, coords, temp=True):
"""Make a selection.
@param self -- Desenho.Desenho instance
@param widget -- Area object (GtkDrawingArea)
@param coords -- Two value tuple
@param temp -- switch between pixmap and pixmap_temp
@param fill -- Fill object
@return (x0,y0,x1,y1) -- coords of corners
"""
width, height = widget.window.get_size()
x, y, dx, dy = self.adjust(widget, coords, True)
widget.pixmap_temp.draw_drawable(widget.gc, widget.pixmap,
0, 0, 0, 0, width, height)
if temp:
widget.pixmap_temp.draw_rectangle(widget.gc_selection, False,
x, y, dx, dy)
widget.pixmap_temp.draw_rectangle(widget.gc_selection1, False,
x - 1, y - 1, dx + 2, dy + 2)
else:
try:
del (widget.pixmap_sel)
except:
pass
widget.pixmap_sel = gtk.gdk.Pixmap(widget.window, dx, dy, -1)
widget.pixmap_sel.draw_drawable(widget.gc, widget.pixmap,
x, y, 0, 0, dx, dy)
widget.pixmap.draw_rectangle(widget.get_style().white_gc, True,
x, y, dx, dy)
widget.orig_x = x
widget.orig_y = y
widget.pixmap_temp.draw_rectangle(widget.gc_selection, False,
x, y, dx, dy)
widget.pixmap_temp.draw_rectangle(widget.gc_selection1, False,
x - 1, y - 1, dx + 2, dy + 2)
widget.queue_draw()
def moveSelection(self, widget, coords):
"""Move the selection.
@param self -- Desenho.Desenho instance
@param widget -- Area object (GtkDrawingArea)
@param coords -- Two value tuple
@param mvcopy -- Copy or Move
@param pixbuf_copy -- For import image
"""
width, height = widget.window.get_size()
widget.pixmap_temp.draw_drawable(widget.gc, widget.pixmap,
0, 0, 0, 0, width, height)
dx = int(coords[0] - widget.oldx)
dy = int(coords[1] - widget.oldy)
size = widget.pixmap_sel.get_size()
widget.pixmap_temp.draw_drawable(widget.gc, widget.pixmap_sel,
0, 0, widget.orig_x + dx, widget.orig_y + dy, size[0], size[1])
widget.pixmap_temp.draw_rectangle(widget.gc_selection, False,
widget.orig_x + dx, widget.orig_y + dy, size[0], size[1])
widget.pixmap_temp.draw_rectangle(widget.gc_selection1, False,
widget.orig_x + dx - 1, widget.orig_y + dy - 1,
size[0] + 2, size[1] + 2)
widget.queue_draw()
def resizeSelection(self, widget, width_percent, height_percent):
"""Resize the selection.
@param self -- Desenho.Desenho instance
@param width_percent -- Percent of x scale
@param height_percent -- Percent of y scale
"""
width, height = widget.window.get_size()
widget.desenha = True
widget.selmove = True
gc.collect()
#Create the pixbuf for future resizes
try:
self.pixbuf_resize
except:
size = widget.pixmap_sel.get_size()
self.pixbuf_resize = gtk.gdk.Pixbuf(gtk.gdk.COLORSPACE_RGB, False,
8, size[0], size[1])
self.pixbuf_resize.get_from_drawable(widget.pixmap_sel,
gtk.gdk.colormap_get_system(), 0, 0, 0, 0, size[0], size[1])
w = self.pixbuf_resize.get_width()
h = self.pixbuf_resize.get_height()
wr = int(w * width_percent)
hr = int(h * height_percent)
resized = self.pixbuf_resize.scale_simple(wr, hr, gtk.gdk.INTERP_HYPER)
#Copy the resized picture to pixmap_sel
try:
del (widget.pixmap_sel)
except:
pass
widget.pixmap_sel = gtk.gdk.Pixmap(widget.window, wr, hr, -1)
widget.pixmap_sel.draw_pixbuf(widget.get_style().white_gc, resized,
0, 0, 0, 0, wr, hr)
#Draw the new pixmap_sel
widget.pixmap_temp.draw_drawable(widget.gc, widget.pixmap,
0, 0, 0, 0, width, height)
widget.pixmap_temp.draw_drawable(widget.gc, widget.pixmap_sel,
0, 0, widget.orig_x, widget.orig_y, wr, hr)
widget.pixmap_temp.draw_rectangle(widget.gc_selection, False,
widget.orig_x, widget.orig_y, wr, hr)
widget.pixmap_temp.draw_rectangle(widget.gc_selection1, False,
widget.orig_x - 1, widget.orig_y - 1, wr + 2, hr + 2)
widget.queue_draw()
gc.collect()
def polygon(self, widget, coords, temp, fill, param=None):
"""Draw polygon.
@param self -- Desenho.Desenho instance
@param widget -- Area object (GtkDrawingArea)
@param coords -- Two value tuple
@param temp -- switch between pixmap and pixmap_temp
@param fill -- Fill object
"""
if temp == True:
pixmap = widget.pixmap_temp
else:
pixmap = widget.pixmap
width, height = widget.window.get_size()
pixmap.draw_drawable(widget.gc, widget.pixmap, 0, 0, 0, 0,
width, height)
if param == "moving":
# mouse not pressed moving
if not widget.polygon_start:
pixmap.draw_line(widget.gc_line,
widget.last[0], widget.last[1], coords[0], coords[1])
elif widget.polygon_start == True: # Starting a new polygon ?
if param == "motion":
# first press
try:
pixmap.draw_line(widget.gc_line,
widget.last[0], widget.last[1], coords[0], coords[1])
widget.pixmap.draw_line(widget.gc_line,
widget.last[0], widget.last[1], coords[0], coords[1])
widget.points.append(coords)
except:
pixmap.draw_line(widget.gc_line, widget.oldx, widget.oldy,
coords[0], coords[1])
widget.pixmap.draw_line(widget.gc_line,
widget.oldx, widget.oldy, coords[0], coords[1])
widget.first = widget.oldx, widget.oldy
widget.points = [widget.first, coords]
widget.enableUndo(widget)
widget.last = coords
else: # param == "release"
# first release
try:
widget.first
widget.points.append(coords)
widget.pixmap.draw_line(widget.gc_line,
widget.last[0], widget.last[1], coords[0], coords[1])
except:
widget.first = widget.oldx, widget.oldy
widget.points = [widget.first, coords]
widget.pixmap.draw_line(widget.gc_line,
widget.oldx, widget.oldy, coords[0], coords[1])
widget.enableUndo(widget)
widget.last = coords
widget.polygon_start = False
else:
if param == "motion":
# print "press"
pixmap.draw_line(widget.gc_line,
widget.last[0], widget.last[1], coords[0], coords[1])
widget.pixmap.draw_line(widget.gc_line,
widget.last[0], widget.last[1], coords[0], coords[1])
widget.enableUndo(widget)
widget.last = coords
widget.points.append(coords)
elif param == "release":
# print "release"
x = coords[0] - widget.first[0]
y = coords[1] - widget.first[1]
d = math.hypot(x, y)
if d > 20: # close the polygon ?
pixmap.draw_line(widget.gc_line,
widget.last[0], widget.last[1], coords[0], coords[1])
widget.last = coords
widget.points.append(coords)
else:
tp = tuple(widget.points)
if fill == True:
pixmap.draw_polygon(widget.gc, True, tp)
pixmap.draw_polygon(widget.gc_line, False, tp)
widget.last = []
widget.polygon_start = True
#destroy the undo screen of polygon start
widget.undo_times -= 1
widget.enableUndo(widget)
elif param == "bug":
tp = tuple(widget.points)
if fill == True:
pixmap.draw_polygon(widget.gc, True, tp)
pixmap.draw_polygon(widget.gc_line, False, tp)
widget.last = []
widget.polygon_start = True
#destroy the undo screen of polygon start
widget.undo_times -= 1
widget.enableUndo(widget)
widget.queue_draw()
def adjust(self, widget, coords, locked=False):
width, height = widget.window.get_size()
if widget.oldx > int(coords[0]):
xi = int(coords[0])
xf = widget.oldx
else:
xi = widget.oldx
xf = int(coords[0])
if widget.oldy > int(coords[1]):
yi = int(coords[1])
yf = widget.oldy
else:
yi = widget.oldy
yf = int(coords[1])
if locked == True:
if xi < 0:
xi = 0
if yi < 0:
yi = 0
if xf > width:
xf = width
if yf > height:
yf = height
dx = xf - xi
dy = yf - yi
return xi, yi, dx, dy
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