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#!/usr/bin/env python
# coding=utf-8
#
# Copyright (C) 2012 Alvin Penner, penner@vaxxine.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 Street, Fifth Floor, Boston, MA 02110-1301, USA.
#
"""
This extension will generate vector graphics printout, specifically for Windows GDI32.
This is a modified version of the file dxf_outlines.py by Aaron Spike, aaron@ekips.org
It will write only to the default printer.
The printing preferences dialog will be called.
In order to ensure a pure vector output, use a linewidth < 1 printer pixel
- see http://www.lessanvaezi.com/changing-printer-settings-using-the-windows-api/
- get GdiPrintSample.zip at http://archive.msdn.microsoft.com/WindowsPrintSample
"""
import sys
import ctypes
import inkex
from inkex import PathElement, Rectangle, Group, Use, Transform
from inkex.paths import Path
if sys.platform.startswith("win"):
myspool = ctypes.WinDLL("winspool.drv")
mygdi = ctypes.WinDLL("gdi32.dll")
else:
myspool = None
mygdi = None
LOGBRUSH = ctypes.c_long * 3
DM_IN_PROMPT = 4 # call printer property sheet
DM_OUT_BUFFER = 2 # write to DEVMODE structure
class PrintWin32Vector(inkex.EffectExtension):
def __init__(self):
super(PrintWin32Vector, self).__init__()
self.visibleLayers = True # print only visible layers
def process_shape(self, node, mat):
"""Process shape"""
rgb = (0, 0, 0) # stroke color
fillcolor = None # fill color
stroke = 1 # pen width in printer pixels
# Very NB : If the pen width is greater than 1 then the output will Not be a vector output !
style = node.style
if style:
if "stroke" in style:
if (
style["stroke"]
and style["stroke"] != "none"
and style["stroke"][0:3] != "url"
):
rgb = inkex.Color(style["stroke"]).to_rgb()
if "stroke-width" in style:
stroke = self.svg.unittouu(style["stroke-width"]) / self.svg.unittouu(
"1px"
)
stroke = int(stroke * self.scale)
if "fill" in style:
if (
style["fill"]
and style["fill"] != "none"
and style["fill"][0:3] != "url"
):
fill = inkex.Color(style["fill"]).to_rgb()
fillcolor = fill[0] + 256 * fill[1] + 256 * 256 * fill[2]
color = rgb[0] + 256 * rgb[1] + 256 * 256 * rgb[2]
if isinstance(node, PathElement):
p = node.path.to_superpath()
if not p:
return
elif isinstance(node, Rectangle):
x = float(node.get("x"))
y = float(node.get("y"))
width = float(node.get("width"))
height = float(node.get("height"))
p = [[[x, y], [x, y], [x, y]]]
p.append([[x + width, y], [x + width, y], [x + width, y]])
p.append(
[
[x + width, y + height],
[x + width, y + height],
[x + width, y + height],
]
)
p.append([[x, y + height], [x, y + height], [x, y + height]])
p.append([[x, y], [x, y], [x, y]])
p = [p]
else:
return
mat += node.transform
p = Path(p).transform(Transform(mat)).to_arrays()
hPen = mygdi.CreatePen(0, stroke, color)
mygdi.SelectObject(self.hDC, hPen)
self.emit_path(p)
if fillcolor is not None:
brush = LOGBRUSH(0, fillcolor, 0)
hBrush = mygdi.CreateBrushIndirect(ctypes.addressof(brush))
mygdi.SelectObject(self.hDC, hBrush)
mygdi.BeginPath(self.hDC)
self.emit_path(p)
mygdi.EndPath(self.hDC)
mygdi.FillPath(self.hDC)
return
def emit_path(self, p):
for sub in p:
mygdi.MoveToEx(self.hDC, int(sub[0][1][0]), int(sub[0][1][1]), None)
POINTS = ctypes.c_long * (6 * (len(sub) - 1))
points = POINTS()
for i in range(len(sub) - 1):
points[6 * i] = int(sub[i][2][0])
points[6 * i + 1] = int(sub[i][2][1])
points[6 * i + 2] = int(sub[i + 1][0][0])
points[6 * i + 3] = int(sub[i + 1][0][1])
points[6 * i + 4] = int(sub[i + 1][1][0])
points[6 * i + 5] = int(sub[i + 1][1][1])
mygdi.PolyBezierTo(self.hDC, ctypes.addressof(points), 3 * (len(sub) - 1))
return
def process_clone(self, node):
trans = node.get("transform")
x = node.get("x")
y = node.get("y")
mat = Transform([[1.0, 0.0, 0.0], [0.0, 1.0, 0.0]])
if trans:
mat *= Transform(trans)
if x:
mat *= Transform([[1.0, 0.0, float(x)], [0.0, 1.0, 0.0]])
if y:
mat *= Transform([[1.0, 0.0, 0.0], [0.0, 1.0, float(y)]])
# push transform
if trans or x or y:
self.groupmat.append(Transform(self.groupmat[-1]) * mat)
# get referenced node
refnode = node.href
if refnode is not None:
if isinstance(refnode, inkex.Group):
self.process_group(refnode)
elif refnode.tag == "svg:use":
self.process_clone(refnode)
else:
self.process_shape(refnode, self.groupmat[-1])
# pop transform
if trans or x or y:
self.groupmat.pop()
def process_group(self, group):
if isinstance(group, inkex.Layer):
style = group.style
if "display" in style:
if style["display"] == "none" and self.visibleLayers:
return
trans = group.get("transform")
if trans:
self.groupmat.append(Transform(self.groupmat[-1]) * Transform(trans))
for node in group:
if isinstance(node, Group):
self.process_group(node)
elif isinstance(node, Use):
self.process_clone(node)
else:
self.process_shape(node, self.groupmat[-1])
if trans:
self.groupmat.pop()
def doc_name(self):
docname = self.svg.xpath("@sodipodi:docname")
if not docname:
docname = ["New document 1"]
return ctypes.create_string_buffer(
("Inkscape " + docname[0].split("\\")[-1]).encode("ascii", "replace")
)
def effect(self):
pcchBuffer = ctypes.c_long()
myspool.GetDefaultPrinterA(
None, ctypes.byref(pcchBuffer)
) # get length of printer name
pname = ctypes.create_string_buffer(pcchBuffer.value)
myspool.GetDefaultPrinterA(pname, ctypes.byref(pcchBuffer)) # get printer name
hPrinter = ctypes.c_long()
if myspool.OpenPrinterA(pname.value, ctypes.byref(hPrinter), None) == 0:
return inkex.errormsg(_("Failed to open default printer"))
# get printer properties dialog
pcchBuffer = myspool.DocumentPropertiesA(0, hPrinter, pname, None, None, 0)
pDevMode = ctypes.create_string_buffer(
pcchBuffer + 100
) # allocate extra just in case
pcchBuffer = myspool.DocumentPropertiesA(
0,
hPrinter,
pname,
ctypes.byref(pDevMode),
None,
DM_IN_PROMPT + DM_OUT_BUFFER,
)
myspool.ClosePrinter(hPrinter)
if pcchBuffer != 1: # user clicked Cancel
exit()
# initiallize print document
lpszDocName = self.doc_name()
DOCINFO = ctypes.c_long * 5
docInfo = DOCINFO(20, ctypes.addressof(lpszDocName), 0, 0, 0)
self.hDC = mygdi.CreateDCA(None, pname, None, ctypes.byref(pDevMode))
if mygdi.StartDocA(self.hDC, ctypes.byref(docInfo)) < 0:
exit() # user clicked Cancel
self.scale = (
ord(pDevMode[58]) + 256.0 * ord(pDevMode[59])
) / 96 # use PrintQuality from DEVMODE
self.scale /= self.svg.unittouu("1px")
h = self.svg.unittouu(self.svg.xpath("@height")[0])
doc = self.document.getroot()
# process viewBox height attribute to correct page scaling
viewBox = doc.get("viewBox")
if viewBox:
viewBox2 = viewBox.split(",")
if len(viewBox2) < 4:
viewBox2 = viewBox.split(" ")
self.scale *= h / self.svg.unittouu(self.addDocumentUnit(viewBox2[3]))
self.groupmat = [[[self.scale, 0.0, 0.0], [0.0, self.scale, 0.0]]]
self.process_group(doc)
mygdi.EndDoc(self.hDC)
if __name__ == "__main__":
PrintWin32Vector().run()
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