def _draw_object(self, obj, trafo):
if obj.childs:
for child in obj.childs:
self._draw_object(child, trafo)
else:
fill_anyway = False
path = obj.cache_cpath
if obj.is_text():
path = libcairo.convert_bbox_to_cpath(obj.cache_bbox)
fill_anyway = True
if obj.is_curve() and len(obj.paths) > 100:
path = libcairo.convert_bbox_to_cpath(obj.cache_bbox)
fill_anyway = True
if obj.is_pixmap():
fill_anyway = True
self.ctx.set_matrix(libcairo.get_matrix_from_trafo(trafo))
self.ctx.new_path()
self.ctx.append_path(path)
stroke_width = config.stroke_sensitive_size
if not self.canvas.stroke_view and obj.style[0]:
self.ctx.fill_preserve()
if fill_anyway:
self.ctx.fill_preserve()
if obj.style[1]:
stroke = obj.style[1]
width = stroke[1] * trafo[0]
stroke_width /= trafo[0]
if width < stroke_width:
width = stroke_width
self.ctx.set_line_width(width)
self.ctx.stroke()
def _draw_object(self, obj, trafo, fill_anyway=False):
if obj.childs:
for child in obj.childs:
self._draw_object(child, trafo)
else:
path = obj.cache_cpath
if obj.is_text():
path = libcairo.convert_bbox_to_cpath(obj.cache_bbox)
fill_anyway = True
if obj.is_curve() and len(obj.paths) > 100:
path = libcairo.convert_bbox_to_cpath(obj.cache_bbox)
fill_anyway = True
if obj.is_pixmap():
fill_anyway = True
self.ctx.set_matrix(libcairo.get_matrix_from_trafo(trafo))
self.ctx.new_path()
self.ctx.append_path(path)
stroke_width = config.stroke_sensitive_size
if not self.canvas.stroke_view and obj.style[0]:
self.ctx.fill_preserve()
if fill_anyway:
self.ctx.fill_preserve()
if obj.style[1]:
stroke = obj.style[1]
width = stroke[1] * trafo[0]
stroke_width /= trafo[0]
if width < stroke_width: width = stroke_width
self.ctx.set_line_width(width)
self.ctx.stroke()
def is_point_on_path(self, win_point, path):
self.clear()
trafo = self.get_context_trafo(win_point)
self.ctx.set_matrix(libcairo.get_matrix_from_trafo(trafo))
stroke_width = config.stroke_sensitive_size
stroke_width /= trafo[0]
cpath = libgeom.create_cpath([path, ])
self.ctx.new_path()
self.ctx.append_path(cpath)
self.ctx.set_line_width(stroke_width)
self.ctx.stroke()
return not libcairo.check_surface_whiteness(self.surface)
def is_point_on_path(self, win_point, path):
self.clear()
trafo = self.get_context_trafo(win_point)
self.ctx.set_matrix(libcairo.get_matrix_from_trafo(trafo))
stroke_width = config.stroke_sensitive_size
stroke_width /= trafo[0]
cpath = libgeom.create_cpath([path])
self.ctx.new_path()
self.ctx.append_path(cpath)
self.ctx.set_line_width(stroke_width)
self.ctx.stroke()
return not libcairo.check_surface_whiteness(self.surface)
def is_point_on_segment(self, win_point, start_point, end_point):
self.clear()
trafo = self.get_context_trafo(win_point)
self.ctx.set_matrix(libcairo.get_matrix_from_trafo(trafo))
stroke_width = config.stroke_sensitive_size
stroke_width /= trafo[0]
if len(start_point) > 2: start_point = start_point[2]
self.ctx.move_to(*start_point)
if len(end_point) == 2:
self.ctx.line_to(*end_point)
else:
p1, p2, p3 = end_point[:-1]
self.ctx.curve_to(*(p1 + p2 + p3))
self.ctx.set_line_width(stroke_width)
self.ctx.stroke()
return not libcairo.check_surface_whiteness(self.surface)
def is_point_on_segment(self, win_point, start_point, end_point):
self.clear()
trafo = self.get_context_trafo(win_point)
self.ctx.set_matrix(libcairo.get_matrix_from_trafo(trafo))
stroke_width = config.stroke_sensitive_size
stroke_width /= trafo[0]
if len(start_point) > 2:
start_point = start_point[2]
self.ctx.move_to(*start_point)
if len(end_point) == 2:
self.ctx.line_to(*end_point)
else:
p1, p2, p3 = end_point[:-1]
self.ctx.curve_to(*(p1 + p2 + p3))
self.ctx.set_line_width(stroke_width)
self.ctx.stroke()
return not libcairo.check_surface_whiteness(self.surface)
def set_trafo(self, point): trafo = [ZOOM, 0.0, 0.0, ZOOM, -point[0] * ZOOM, -point[1] * ZOOM] self.ctx.set_matrix(libcairo.get_matrix_from_trafo(trafo))
def set_trafo(self, point):
trafo = [ZOOM, 0.0, 0.0, ZOOM, -point[0] * ZOOM, -point[1] * ZOOM]
self.ctx.set_matrix(libcairo.get_matrix_from_trafo(trafo))
