def _calc_right_skew_trafo(self, event):
is_centering = event.is_shift()
is_constraining = event.is_ctrl()
start_point = self.canvas.win_to_doc(self.start)
end_point = self.canvas.win_to_doc(self.end)
bbox = self.presenter.selection.bbox
h = libgeom.bbox_size(bbox)[1]
m11, m21, m12, m22, dx, dy = sk2const.NORMAL_TRAFO
change_y = end_point[1] - start_point[1]
cx = bbox[0]
if is_centering:
center_offset = self.presenter.selection.center_offset
cx = libgeom.add_points(libgeom.bbox_center(bbox),
center_offset)[0]
if is_constraining:
step = math.radians(config.skew_fixed_angle)
angle = (math.atan2(change_y, h) + step / 2.0) // step * step
m21 = math.tan(angle)
else:
m21 = change_y / h if h else 1.0
dy = -cx * m21
return [m11 or EPSILON, m21, m12, m22 or EPSILON, dx, dy]
def render(self, sel_flag=False):
doc = self.app.current_doc
if sel_flag:
if not doc.selection.objs:
return None
w, h = libgeom.bbox_size(doc.selection.bbox)
x, y = libgeom.bbox_center(doc.selection.bbox)
trafo = (1.0, 0, 0, -1.0, w / 2.0 - x, h / 2.0 + y)
else:
page = doc.active_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 = crenderer.CairoRenderer(doc.cms)
if sel_flag:
objs = doc.selection.objs
for obj in objs:
layer = doc.methods.get_parent_layer(obj)
rend.antialias_flag = layer.properties[3] == 1
rend.render(ctx, [obj])
else:
layers = doc.methods.get_visible_layers(page)
for item in layers:
rend.antialias_flag = item.properties[3] == 1
rend.render(ctx, item.childs)
image_stream = StringIO()
surface.write_to_png(image_stream)
return image_stream
def _draw_center(self, *args): if self.end: start = self.canvas.win_to_doc(self.start) end = self.canvas.win_to_doc(self.end) dx = end[0] - start[0] dy = end[1] - start[1] x, y = self.offset_start cp = libgeom.bbox_center(self.selection.bbox) f, win_p, doc_p = self.snap.snap_point([cp[0] + x + dx, cp[1] + y + dy], False) self.selection.center_offset = [doc_p[0] - cp[0], doc_p[1] - cp[1]] self.canvas.renderer.paint_selection() return True
def _draw_center(self, *args):
if self.end:
start = self.canvas.win_to_doc(self.start)
end = self.canvas.win_to_doc(self.end)
dx = end[0] - start[0]
dy = end[1] - start[1]
x, y = self.offset_start
cp = libgeom.bbox_center(self.selection.bbox)
doc_p = \
self.snap.snap_point([cp[0] + x + dx, cp[1] + y + dy], False)[2]
self.selection.center_offset = [doc_p[0] - cp[0], doc_p[1] - cp[1]]
self.canvas.selection_redraw()
# self.canvas.renderer.paint_selection()
return True
def render(objs, cms):
bbox = reduce(lambda a, b: libgeom.sum_bbox(a, b.cache_bbox), objs, [])
w, h = libgeom.bbox_size(bbox)
x, y = libgeom.bbox_center(bbox)
trafo = (1.0, 0, 0, -1.0, w / 2.0 - x, h / 2.0 + y)
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 = crenderer.CairoRenderer(cms)
rend.antialias_flag = True
rend.render(ctx, objs)
image_stream = StringIO()
surface.write_to_png(image_stream)
return image_stream
def render(self, sel_flag=False):
doc = self.app.current_doc
if not doc:
return
if sel_flag:
if not doc.selection.objs:
return None
w, h = libgeom.bbox_size(doc.selection.bbox)
x, y = libgeom.bbox_center(doc.selection.bbox)
trafo = (1.0, 0, 0, -1.0, w / 2.0 - x, h / 2.0 + y)
else:
page = doc.active_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 = crenderer.CairoRenderer(doc.cms)
if sel_flag:
objs = doc.selection.objs
for obj in objs:
layer = doc.methods.get_parent_layer(obj)
rend.antialias_flag = layer.properties[3] == 1
rend.render(ctx, [
obj,
])
else:
page = doc.active_page
layers = doc.methods.get_visible_layers(page)
for item in layers:
rend.antialias_flag = item.properties[3] == 1
rend.render(ctx, item.childs)
image_stream = StringIO()
surface.write_to_png(image_stream)
return image_stream
def _calc_bottom_left_rotate_trafo(self, event):
is_centering = not event.is_shift()
is_constraining = event.is_ctrl()
start_point = self.canvas.win_to_doc(self.start)
end_point = self.canvas.win_to_doc(self.end)
bbox = self.presenter.selection.bbox
if is_centering:
bbox_center = libgeom.bbox_center(bbox)
center_offset = self.selection.center_offset
center = libgeom.add_points(bbox_center, center_offset)
else:
center = libgeom.bbox_points(bbox)[3]
a1 = libgeom.get_point_angle(start_point, center)
a2 = libgeom.get_point_angle(end_point, center)
angle = a2 - a1
if is_constraining:
step = math.radians(config.rotation_step)
angle = (angle + step / 2.0) // step * step
return libgeom.trafo_rotate(angle, center[0], center[1])
def mouse_move(self, event):
is_constraining = event.is_ctrl()
is_snapping = not event.is_shift()
if not self.start:
point = self.canvas.win_to_doc(event.get_point())
ret = self.selection.is_point_over_marker(point)
if not ret:
self.canvas.restore_mode()
elif not ret[0] == self.canvas.resize_marker:
self.canvas.resize_marker = ret[0]
self.set_cursor()
else:
self.end = event.get_point()
if not self.canvas.resize_marker == MARK_ROTATE:
self.trafo = self._calc_trafo(event)
self.moved = True
else:
start = self.canvas.win_to_doc(self.start)
end = self.canvas.win_to_doc(self.end)
center = libgeom.bbox_center(self.selection.bbox)
offset = libgeom.add_points(center, self.offset_start)
dp = libgeom.sub_points(end, start)
cursor = libgeom.add_points(offset, dp)
if is_constraining:
step = config.rotation_step
cursor = libgeom.round_angle_point(center, cursor, step)
if is_snapping:
cursor = self.snap.snap_point(cursor, False)[2]
center_offset = libgeom.sub_points(cursor, center)
self.selection.center_offset = center_offset
self.canvas.selection_redraw()