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# This file is part of pybootchartgui.
# pybootchartgui 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 3 of the License, or
# (at your option) any later version.
# pybootchartgui 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 pybootchartgui. If not, see <http://www.gnu.org/licenses/>.
import cairo
from . import draw
from .draw import RenderOptions
def render(writer, trace, app_options, filename):
handlers = {
"png": (lambda w, h: cairo.ImageSurface(cairo.FORMAT_ARGB32, w, h), \
lambda sfc: sfc.write_to_png(filename)),
"pdf": (lambda w, h: cairo.PDFSurface(filename, w, h), lambda sfc: 0),
"svg": (lambda w, h: cairo.SVGSurface(filename, w, h), lambda sfc: 0)
}
if app_options.format is None:
fmt = filename.rsplit('.', 1)[1]
else:
fmt = app_options.format
if not (fmt in handlers):
writer.error ("Unknown format '%s'." % fmt)
return 10
make_surface, write_surface = handlers[fmt]
options = RenderOptions (app_options)
(w, h) = draw.extents (options, 1.0, trace)
w = max (w, draw.MIN_IMG_W)
surface = make_surface (w, h)
ctx = cairo.Context (surface)
draw.render (ctx, options, 1.0, trace)
write_surface (surface)
writer.status ("bootchart written to '%s'" % filename)
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