def render(self):
# Using temporary png file because GdkPixbuf.Pixbuf.new_from_data() appears to be broken
h, self.imgtmp = tempfile.mkstemp(suffix = ".png")
print_to_console("\nTemporary .png file: \"%s\"" % self.imgtmp)
imgtmp = open(self.imgtmp, "wb")
imgtmp.write(ghostscript.load_image(
self.pdftmp, # PDF Filename
[0, 0, 0, 0], # Don't supply a bounding box
72 * self.quality, # X Resolution * quality factor
72 * self.quality, # Y Resolution * quality factor
0, # 0 = Render entire page
0, # 0 = Render entire page
"pnggray").tostring())
imgtmp.close()
os.close(h)
return Image.open(self.imgtmp)
bbox[2] += (right_margin/25.4*72.0)
bbox[3] += (bottom_margin/25.4*72.0)
xres = 2540 # dpi, i.e 10um per pixel
yres = 600
bbox_width = bbox[2] - bbox[0]
bbox_height = bbox[3] - bbox[1]
width_px = 11000 # Render 110 mm strip
height_px = int(math.ceil((yres*bbox_height)/72))
bytes_per_line = int(math.ceil(width_px / 8))
print "Loading image (%dx%d pixels):" % (width_px, height_px)
img = ghostscript.load_image(args.fname, bbox, xres, yres, width_px, height_px)
print "Setting up device"
pcb = PCBWriter()
pcb.set_n_scans(n_scans)
pcb.set_autostep(True)
print "%d bytes/line" % bytes_per_line
print "Transferring image: "
for line in range(0, height_px):
print "Transferring line %d/%d" % (line, height_px)
# line_data = array.array("B", [255]*2000)
bbox[2] += (right_margin / 25.4 * 72.0)
bbox[3] += (bottom_margin / 25.4 * 72.0)
xres = 2540 # dpi, i.e 10um per pixel
yres = 600
bbox_width = bbox[2] - bbox[0]
bbox_height = bbox[3] - bbox[1]
width_px = 11000 # Render 110 mm strip
height_px = int(math.ceil((yres * bbox_height) / 72))
bytes_per_line = int(math.ceil(width_px / 8))
print "Loading image (%dx%d pixels):" % (width_px, height_px)
img = ghostscript.load_image(args.fname, bbox, xres, yres, width_px, height_px)
print "Setting up device"
pcb = PCBWriter()
pcb.set_n_scans(n_scans)
pcb.set_autostep(True)
print "%d bytes/line" % bytes_per_line
print "Transferring image: "
for line in range(0, height_px):
print "Transferring line %d/%d" % (line, height_px)
# line_data = array.array("B", [255]*2000)