def generate_preview(self):
wp, hp = self.config.preview_size
surface = cairo.ImageSurface(cairo.FORMAT_ARGB32, int(wp), int(hp))
ctx = cairo.Context(surface)
if not self.config.preview_transparent:
ctx.set_source_rgb(1.0, 1.0, 1.0)
ctx.paint()
# ---rendering
mthds = self.presenter.methods
layers = mthds.get_visible_layers(mthds.get_page())
bbox = mthds.count_bbox(layers)
if bbox:
x, y, x1, y1 = bbox
w = abs(x1 - x)
h = abs(y1 - y)
coef = min(wp / w, hp / h) * 0.99
trafo0 = [1.0, 0.0, 0.0, 1.0, -x - w / 2.0, -y - h / 2.0]
trafo1 = [coef, 0.0, 0.0, -coef, 0.0, 0.0]
trafo2 = [1.0, 0.0, 0.0, 1.0, wp / 2.0, hp / 2.0]
trafo = libgeom.multiply_trafo(trafo0, trafo1)
trafo = libgeom.multiply_trafo(trafo, trafo2)
ctx.set_matrix(cairo.Matrix(*trafo))
rend = CairoRenderer(self.presenter.cms)
rend.antialias_flag = True
for item in layers:
rend.render(ctx, item.childs)
# ---rendering
image_stream = StringIO()
surface.write_to_png(image_stream)
return b64encode(image_stream.getvalue())
def png_saver(sk2_doc,
filename=None,
fileptr=None,
translate=True,
cnf=None,
**kw):
cnf = merge_cnf(cnf, kw)
if filename and not fileptr:
fileptr = get_fileptr(filename, True)
page = sk2_doc.methods.get_page()
scale = abs(float(cnf.get('scale', 1.0))) or 1.0
w, h = [scale * item for item in page.page_format[1]]
trafo = (scale, 0, 0, -scale, w / 2.0, h / 2.0)
canvas_matrix = cairo.Matrix(*trafo)
surface = cairo.ImageSurface(cairo.FORMAT_ARGB32, int(w), int(h))
ctx = cairo.Context(surface)
ctx.set_matrix(canvas_matrix)
antialias_flag = not cnf.get('antialiasing') in (False, 0)
layers = sk2_doc.methods.get_visible_layers(page)
rend = CairoRenderer(sk2_doc.cms)
for item in layers:
rend.antialias_flag = not any(
[not item.properties[3], not antialias_flag])
rend.render(ctx, item.childs)
surface.write_to_png(fileptr)
fileptr.close()
def generate_preview(self): wp, hp = self.config.preview_size surface = cairo.ImageSurface(cairo.FORMAT_ARGB32, int(wp), int(hp)) ctx = cairo.Context(surface) if not self.config.preview_transparent: ctx.set_source_rgb(1.0, 1.0, 1.0) ctx.paint() #---rendering mthds = self.presenter.methods layers = mthds.get_visible_layers(mthds.get_page()) bbox = mthds.count_bbox(layers) if bbox: x, y, x1, y1 = bbox w = abs(x1 - x) h = abs(y1 - y) coef = min(wp / w, hp / h) * 0.99 trafo0 = [1.0, 0.0, 0.0, 1.0, -x - w / 2.0, -y - h / 2.0] trafo1 = [coef, 0.0, 0.0, -coef, 0.0, 0.0] trafo2 = [1.0, 0.0, 0.0, 1.0, wp / 2.0, hp / 2.0] trafo = libgeom.multiply_trafo(trafo0, trafo1) trafo = libgeom.multiply_trafo(trafo, trafo2) ctx.set_matrix(cairo.Matrix(*trafo)) rend = CairoRenderer(self.presenter.cms) rend.antialias_flag = True for item in layers: rend.render(ctx, item.childs) #---rendering image_stream = StringIO() surface.write_to_png(image_stream) return b64encode(image_stream.getvalue())
def png_saver(sk2_doc,
filename=None,
fileptr=None,
translate=True,
cnf=None,
**kw):
cnf = merge_cnf(cnf, kw)
if filename and not fileptr:
fileptr = get_fileptr(filename, True)
page = sk2_doc.methods.get_page()
w, h = page.page_format[1]
trafo = (1.0, 0, 0, -1.0, w / 2.0, h / 2.0)
canvas_matrix = cairo.Matrix(*trafo)
surface = cairo.ImageSurface(cairo.FORMAT_ARGB32, int(w), int(h))
ctx = cairo.Context(surface)
ctx.set_matrix(canvas_matrix)
rend = CairoRenderer(sk2_doc.cms)
antialias_flag = True
if 'antialiasing' in cnf.keys():
if not cnf['antialiasing'] in ('True', '1'):
antialias_flag = False
rend.antialias_flag = antialias_flag
layers = sk2_doc.methods.get_visible_layers(page)
for item in layers:
if not item.properties[3] and antialias_flag:
rend.antialias_flag = False
rend.render(ctx, item.childs)
if not item.properties[3] and antialias_flag:
rend.antialias_flag = True
surface.write_to_png(fileptr)
fileptr.close()
def png_saver(sk2_doc, filename=None, fileptr=None, translate=True, cnf={}, **kw):
if filename and not fileptr:
fileptr = get_fileptr(filename, True)
page = sk2_doc.methods.get_page()
w, h = page.page_format[1]
trafo = (1.0, 0, 0, -1.0, w / 2.0, h / 2.0)
canvas_matrix = cairo.Matrix(*trafo)
surface = cairo.ImageSurface(cairo.FORMAT_ARGB32, int(w), int(h))
ctx = cairo.Context(surface)
ctx.set_matrix(canvas_matrix)
rend = CairoRenderer(sk2_doc.cms)
antialias_flag = True
if 'antialiasing' in kw.keys():
if not kw['antialiasing'] in ('True', '1'):
antialias_flag = False
rend.antialias_flag = antialias_flag
layers = sk2_doc.methods.get_visible_layers(page)
for item in layers:
if not item.properties[3] and antialias_flag:
rend.antialias_flag = False
rend.render(ctx, item.childs)
if not item.properties[3] and antialias_flag:
rend.antialias_flag = True
surface.write_to_png(fileptr)
fileptr.close()
def __init__(self, canvas, cms=None):
CairoRenderer.__init__(self, cms)
self.canvas = canvas
self.direct_matrix = cairo.Matrix(1.0, 0.0, 0.0, 1.0, 0.0, 0.0)
def __init__(self, cms):
CairoRenderer.__init__(self, cms)
def __init__(self, cms): CairoRenderer.__init__(self, cms)
